626 results on '"M. A. Wolff"'
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2. Energy-level quantization and single-photon control of phase slips in YBa2Cu3O7–x nanowires
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M. Lyatti, M. A. Wolff, I. Gundareva, M. Kruth, S. Ferrari, R. E. Dunin-Borkowski, and C. Schuck
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Science - Abstract
Superconducting nanowires with quantum phase slips are promising candidates for future quantum technologies. Here, Lyatti et al. report evidence for energy-level quantization and single photon control of phase slips in ultra-thin YBa2Cu3O7-x nanowires, promising for quantum sensing and computing.
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- 2020
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3. Amorphous superconducting nanowire single-photon detectors integrated with nanophotonic waveguides
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M. Häußler, M. Yu. Mikhailov, M. A. Wolff, and C. Schuck
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Applied optics. Photonics ,TA1501-1820 - Abstract
Future applications in integrated quantum photonics will require large numbers of efficient, fast, and low-noise single-photon counters. Superconducting nanowire single-photon detectors made from amorphous material systems are best suited to meet these demands, but the integration with nanophotonic circuits has remained a challenge. Here, we show how amorphous molybdenum silicide (MoSi) nanowires are integrated with nanophotonic silicon nitride waveguides in traveling wave geometry. We found a saturated on-chip detection efficiency of (73 ± 10) % for telecom wavelength photons and the sub-10 Hz dark count rate at a temperature of 2.1 K, which allows for operation in robust, compact, and economic cryogenic systems. Applications requiring fast counting will benefit from the sub-5 ns recovery times of our devices that we combine with 135 ps timing accuracy. Achieving this performance with waveguide-integrated amorphous superconductors is an important step toward enabling high yield fabrication of competitive single-photon detectors on a large variety of nanophotonic material systems.
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- 2020
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4. Derivation of a new continuous adjustment function for correcting wind-induced loss of solid precipitation: results of a Norwegian field study
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M. A. Wolff, K. Isaksen, A. Petersen-Øverleir, K. Ødemark, T. Reitan, and R. Brækkan
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Technology ,Environmental technology. Sanitary engineering ,TD1-1066 ,Geography. Anthropology. Recreation ,Environmental sciences ,GE1-350 - Abstract
Precipitation measurements exhibit large cold-season biases due to under-catch in windy conditions. These uncertainties affect water balance calculations, snowpack monitoring and calibration of remote sensing algorithms and land surface models. More accurate data would improve the ability to predict future changes in water resources and mountain hazards in snow-dominated regions. In 2010, a comprehensive test site for precipitation measurements was established on a mountain plateau in southern Norway. Automatic precipitation gauge data are compared with data from a precipitation gauge in a Double Fence Intercomparison Reference (DFIR) wind shield construction which serves as the reference. A large number of other sensors are provided supporting data for relevant meteorological parameters. In this paper, data from three winters are used to study and determine the wind-induced under-catch of solid precipitation. Qualitative analyses and Bayesian statistics are used to evaluate and objectively choose the model that best describes the data. A continuous adjustment function and its uncertainty are derived for measurements of all types of winter precipitation (from rain to dry snow). A regression analysis does not reveal any significant misspecifications for the adjustment function, but shows that the chosen model does not describe the regression noise optimally. The adjustment function is operationally usable because it is based only on data available at standard automatic weather stations. The results show a non-linear relationship between under-catch and wind speed during winter precipitation events and there is a clear temperature dependency, mainly reflecting the precipitation type. The results allow, for the first time, derivation of an adjustment function based on measurements above 7 m s−1. This extended validity of the adjustment function shows a stabilization of the wind-induced precipitation loss for higher wind speeds.
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- 2015
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5. Validation of NO2 and NO from the Atmospheric Chemistry Experiment (ACE)
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M. Schneider, A. Richter, M. Ridolfi, P. Raspollini, C. Randall, J.-P. Pommereau, C. Piccolo, C. Nowlan, J. Notholt, F. Nichitiu, D. Murtagh, S. Mikuteit, S. Melo, C. A. McLinden, C. T. McElroy, G. Manney, M. López-Puertas, E. J. Llewellyn, I. Kramer, J. Kar, N. Jones, N. Huret, M. Höpfner, F. Hendrick, C. S. Haley, F. Goutail, D. W. T. Griffith, B. Funke, D. Fussen, D. G. Dufour, J. R. Drummond, J. Dodion, V. Catoire, J. P. Burrows, S. Brohede, C. Brogniez, C. D. Boone, K. Bramstedt, T. Blumenstock, G. Berthet, P. F. Bernath, R. L. Batchelor, L. K. Amekudzi, K. A. Walker, E. Dupuy, K. Strong, M. A. Wolff, T. Kerzenmacher, O. Schrems, M. Silicani, G. P. Stiller, J. Taylor, C. Tétard, M. Toohey, F. Vanhellemont, T. Warneke, J. M. Zawodny, and J. Zou
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Physics ,QC1-999 ,Chemistry ,QD1-999 - Abstract
Vertical profiles of NO2 and NO have been obtained from solar occultation measurements by the Atmospheric Chemistry Experiment (ACE), using an infrared Fourier Transform Spectrometer (ACE-FTS) and (for NO2) an ultraviolet-visible-near-infrared spectrometer, MAESTRO (Measurement of Aerosol Extinction in the Stratosphere and Troposphere Retrieved by Occultation). In this paper, the quality of the ACE-FTS version 2.2 NO2 and NO and the MAESTRO version 1.2 NO2 data are assessed using other solar occultation measurements (HALOE, SAGE II, SAGE III, POAM III, SCIAMACHY), stellar occultation measurements (GOMOS), limb measurements (MIPAS, OSIRIS), nadir measurements (SCIAMACHY), balloon-borne measurements (SPIRALE, SAOZ) and ground-based measurements (UV-VIS, FTIR). Time differences between the comparison measurements were reduced using either a tight coincidence criterion, or where possible, chemical box models. ACE-FTS NO2 and NO and the MAESTRO NO2 are generally consistent with the correlative data. The ACE-FTS and MAESTRO NO2 volume mixing ratio (VMR) profiles agree with the profiles from other satellite data sets to within about 20% between 25 and 40 km, with the exception of MIPAS ESA (for ACE-FTS) and SAGE II (for ACE-FTS (sunrise) and MAESTRO) and suggest a negative bias between 23 and 40 km of about 10%. MAESTRO reports larger VMR values than the ACE-FTS. In comparisons with HALOE, ACE-FTS NO VMRs typically (on average) agree to ±8% from 22 to 64 km and to +10% from 93 to 105 km, with maxima of 21% and 36%, respectively. Partial column comparisons for NO2 show that there is quite good agreement between the ACE instruments and the FTIRs, with a mean difference of +7.3% for ACE-FTS and +12.8% for MAESTRO.
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- 2008
6. Validation of ACE-FTS N2O measurements
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G. P. Stiller, C. Senten, O. Schrems, K. Semeniuk, M. Schneider, C. Robert, M. Ridolfi, P. Raspollini, C. Piccolo, J. Notholt, D. P. Murtagh, S. Mikuteit, J. Mellqvist, J. C. McConnell, E. Mahieu, A. Lambert, H. Kuellmann, J. Kuttippurath, K. Jucks, N. Jones, J. J. Jin, D. W. T. Griffith, N. Glatthor, M. Höpfner, J. Hannigan, E. Dupuy, P. Duchatelet, M. De Mazière, P. Demoulin, M. Coffey, V. Catoire, C. Boone, T. Blumenstock, P. F. Bernath, K. A. Walker, T. E. Kerzenmacher, M. A. Wolff, K. Strong, A. Strandberg, J. Taylor, C. Tétard, M. Toohey, J. Urban, T. Warneke, and S. Wood
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Physics ,QC1-999 ,Chemistry ,QD1-999 - Abstract
The Atmospheric Chemistry Experiment (ACE), also known as SCISAT, was launched on 12 August 2003, carrying two instruments that measure vertical profiles of atmospheric constituents using the solar occultation technique. One of these instruments, the ACE Fourier Transform Spectrometer (ACE-FTS), is measuring volume mixing ratio (VMR) profiles of nitrous oxide (N2O) from the upper troposphere to the lower mesosphere at a vertical resolution of about 3–4 km. In this study, the quality of the ACE-FTS version 2.2 N2O data is assessed through comparisons with coincident measurements made by other satellite, balloon-borne, aircraft, and ground-based instruments. These consist of vertical profile comparisons with the SMR, MLS, and MIPAS satellite instruments, multiple aircraft flights of ASUR, and single balloon flights of SPIRALE and FIRS-2, and partial column comparisons with a network of ground-based Fourier Transform InfraRed spectrometers (FTIRs). Between 6 and 30 km, the mean absolute differences for the satellite comparisons lie between −42 ppbv and +17 ppbv, with most within ±20 ppbv. This corresponds to relative deviations from the mean that are within ±15%, except for comparisons with MIPAS near 30 km, for which they are as large as 22.5%. Between 18 and 30 km, the mean absolute differences for the satellite comparisons are generally within ±10 ppbv. From 30 to 60 km, the mean absolute differences are within ±4 ppbv, and are mostly between −2 and +1 ppbv. Given the small N2O VMR in this region, the relative deviations from the mean are therefore large at these altitudes, with most suggesting a negative bias in the ACE-FTS data between 30 and 50 km. In the comparisons with the FTIRs, the mean relative differences between the ACE-FTS and FTIR partial columns (which cover a mean altitude range of 14 to 27 km) are within ±5.6% for eleven of the twelve contributing stations. This mean relative difference is negative at ten stations, suggesting a small negative bias in the ACE-FTS partial columns over the altitude regions compared. Excellent correlation (R=0.964) is observed between the ACE-FTS and FTIR partial columns, with a slope of 1.01 and an intercept of −0.20 on the line fitted to the data.
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- 2008
7. Validation of HNO3, ClONO2, and N2O5 from the Atmospheric Chemistry Experiment Fourier Transform Spectrometer (ACE-FTS)
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P. Raspollini, C. Piccolo, D. Murtagh, S. Mikuteit, C. McLinden, Y. Mébarki, C. T. McElroy, G. Manney, E. Mahieu, J. Kuttippurath, H. Küllmann, I. Kramer, Y. Kasai, A. Kagawa, K. Jucks, N. Jones, N. Huret, M. Höpfner, F. Hase, J. Hannigan, D. W. T. Griffith, N. Glatthor, P. Duchatelet, W. H. Daffer, M. De Mazière, M. Coffey, T. von Clarmann, V. Catoire, S. Brohede, C. D. Boone, P. F. Bernath, E. Dupuy, M. Toohey, K. Strong, K. A. Walker, T. Kerzenmacher, M. A. Wolff, M. Ridolfi, R. Ruhnke, M. Santee, C. Senten, D. Smale, C. Tétard, J. Urban, and S. Wood
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Physics ,QC1-999 ,Chemistry ,QD1-999 - Abstract
The Atmospheric Chemistry Experiment (ACE) satellite was launched on 12 August 2003. Its two instruments measure vertical profiles of over 30 atmospheric trace gases by analyzing solar occultation spectra in the ultraviolet/visible and infrared wavelength regions. The reservoir gases HNO3, ClONO2, and N2O5 are three of the key species provided by the primary instrument, the ACE Fourier Transform Spectrometer (ACE-FTS). This paper describes the ACE-FTS version 2.2 data products, including the N2O5 update, for the three species and presents validation comparisons with available observations. We have compared volume mixing ratio (VMR) profiles of HNO3, ClONO2, and N2O5 with measurements by other satellite instruments (SMR, MLS, MIPAS), aircraft measurements (ASUR), and single balloon-flights (SPIRALE, FIRS-2). Partial columns of HNO3 and ClONO2 were also compared with measurements by ground-based Fourier Transform Infrared (FTIR) spectrometers. Overall the quality of the ACE-FTS v2.2 HNO3 VMR profiles is good from 18 to 35 km. For the statistical satellite comparisons, the mean absolute differences are generally within ±1 ppbv ±20%) from 18 to 35 km. For MIPAS and MLS comparisons only, mean relative differences lie within±10% between 10 and 36 km. ACE-FTS HNO3 partial columns (~15–30 km) show a slight negative bias of −1.3% relative to the ground-based FTIRs at latitudes ranging from 77.8° S–76.5° N. Good agreement between ACE-FTS ClONO2 and MIPAS, using the Institut für Meteorologie und Klimaforschung and Instituto de Astrofísica de Andalucía (IMK-IAA) data processor is seen. Mean absolute differences are typically within ±0.01 ppbv between 16 and 27 km and less than +0.09 ppbv between 27 and 34 km. The ClONO2 partial column comparisons show varying degrees of agreement, depending on the location and the quality of the FTIR measurements. Good agreement was found for the comparisons with the midlatitude Jungfraujoch partial columns for which the mean relative difference is 4.7%. ACE-FTS N2O5 has a low bias relative to MIPAS IMK-IAA, reaching −0.25 ppbv at the altitude of the N2O5 maximum (around 30 km). Mean absolute differences at lower altitudes (16–27 km) are typically −0.05 ppbv for MIPAS nighttime and ±0.02 ppbv for MIPAS daytime measurements.
- Published
- 2008
8. Childhood growth of singletons conceived following intracytoplasmic sperm injection – irrelevance of gonadotropin stimulation
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M. A. Minger, G. Sommer, V. R. Mitter, L. A. Purtschert, M. von Wolff, and A. S. Kohl Schwartz
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intracytoplasmic sperm injection ,natural cycle ,gonadotropin stimulation ,assisted reproductive technology ,birth weight ,growth ,Reproduction ,QH471-489 ,Medicine (General) ,R5-920 - Abstract
BackgroundIn conventional, gonadotropin stimulated, in vitro fertilization or intracytoplasmic sperm injection (c-IVF/ICSI) growth and development of multiple follicles is induced by gonadotropins, combined with gonadotropin-releasing hormone agonist or antagonist. In recent studies, singletons conceived after c-IVF/ICSI cycles had lower birth weight not only than spontaneously conceived children but also children born after unstimulated natural IVF/ICSI cycles (NC-IVF/ICSI). Lower birth weight is associated with a catch-up growth within the first years of life. Following the Barker hypothesis accelerated growth has been associated with a higher risk of cardiovascular diseases later in life. The aim of the study is to assess, if children conceived with NC-IVF/ICSI have a higher birthweight and therefore do not show a catch-up growth within the first two years. Therefore, we assume that children born after NC-IVF/ICSI have a better long-term cardiometabolic risk profile. Whether the weight- and height gain is comparable to spontaneously conceived children is unknown, since to our knowledge we are the first study to investigate the longitudinal growth of children born after unstimulated natural cycle ICSI (NC-ICSI).Material and methodsWe conducted a single-center, prospective cohort study (2010-2017) including children (n = 139) born after NC-ICSI or c-ICSI treatment. Growth parameters up to 24 months were collected. Standard deviation scores based on growth references were calculated.ResultsThe study included 98 children in the NC-ICSI and 41 children in the c-ICSI group. The median birth weight in NC-ICSI children was 3.4 kg [0.1 standard deviation score (SDS)] compared to 3.3 kg (−0.3 SDS) in c-ICSI children (p = 0.61). Median length at birth was 50 cm in both groups (NC-ICSI (−0.5 SDS), c-ICSI children (−0.8 SDS), p = 0.48). At age 24 months, median weight in NC-ICSI children was 12.2 kg (0.3 SDS) versus 12.2 kg (0.2 SDS) in c-ICSI children (p = 0.82) and median length 87.5 cm (0.1 SDS) versus 88.0 cm (0.4 SDS) (p = 0.43).ConclusionWe found no difference in growth between children conceived after stimulated and unstimulated ICSI. Growth parameters of both treatment groups did not differ from Swiss national growth references (N = 8500). One of the main limitations of our study was the small sample size (N = 139) of complete data sets over time and the high drop-out rate of 49% (68/139). Nevertheless, with the increasing number of children born after IVF/ICSI every year it is of immense importance to search for possibilities to reduce their long-term cardiometabolic risk and we want our data to contribute to this discussion.
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- 2024
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9. Experiences of and recommendations for LGBTQ+-affirming substance use services: an exploratory qualitative descriptive study with LGBTQ+ people who use opioids and other drugs
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Margaret M. Paschen-Wolff, Avery DeSousa, Emily Allen Paine, Tonda L. Hughes, and Aimee N.C. Campbell
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Bisexual ,Cultural sensitivity ,Gay ,Lesbian ,Sexual minorities ,Substance use disorders ,Public aspects of medicine ,RA1-1270 ,Social pathology. Social and public welfare. Criminology ,HV1-9960 - Abstract
Abstract Background Lesbian, gay, bisexual, transgender, queer, and other LGBTQ populations (LGBTQ+; e.g., asexual individuals) have higher rates of substance use (SU) and disorders (SUD) compared to heterosexual and cisgender populations. Such disparities can be attributed to minority stress, including stigma and discrimination in healthcare settings. LGBTQ+-affirming SU treatment and related services remain limited. The purpose of this exploratory qualitative descriptive study was to characterize LGBTQ+ people’s experiences in SU services and recommendations for LGBTQ+- affirming care. Methods We conducted demographic surveys (characterized using descriptive statistics) and individual qualitative interviews with N = 23 LGBTQ+ people. We employed flexible coding and a thematic analysis approach to describe participants’ experiences with stigma, discrimination, and support within SU services at the patient-, staff-, and organizational-level; and participant recommendations for how to make such services LGBTQ+-affirming. We highlighted components of minority stress and mitigators of adverse stress responses throughout our thematic analysis. Results Patient-level experiences included bullying, name-calling, sexual harassment, and physical distancing from peers; and support via community-building with LGBTQ+ peers. Staff-level experiences included name-calling, denial of services, misgendering, lack of intervention in peer bullying, and assumptions about participants’ sexuality; and support via staff advocacy for LGBTQ+ patients, holistic treatment models, and openly LGBTQ+ staff. Organizational-level experiences included stigma in binary gendered program structures; and support from programs with gender-affirming groups and housing, and in visual cues (e.g., rainbow flags) of affirming care. Stigma and discrimination led to minority stress processes like identity concealment and stress coping responses like SU relapse; support facilitated SU treatment engagement and retention. Recommendations for LGBTQ+-affirming care included non-discrimination policies, LGBTQ+-specific programming, hiring LGBTQ+ staff, routine staff sensitivity training, and gender-inclusive program structures. Conclusions LGBTQ+ people experience stigma and discrimination within SU services; supportive and affirming care is vital to reducing treatment barriers and promoting positive health outcomes. The current study offers concrete recommendations for how to deliver LGBTQ+-affirming care, which could reduce SU disparities and drug overdose mortality overall.
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- 2024
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10. Sub‐Hourly Observations of Dust Storm Growth, Lee Waves, and Lyot Crater, by the EMM Camera EXI
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C. Gebhardt, B. K. Guha, R. M. B. Young, M. J. Wolff, and C. S. Edwards
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Emirates Mars Mission ,high‐cadence images ,dust storm ,lee wave ,planetary boundary layer ,dynamics ,Geophysics. Cosmic physics ,QC801-809 - Abstract
Abstract We explore a sequence of 13 unique high‐cadence images of a dust storm, from the Emirates Mars Mission (EMM). The Emirates eXploration Imager camera took these images in less than 8 hr on 18 December 2022 (Martian Year 36, solar longitude 356°). Most of these images are separated by a time difference of half an hour. The region of interest extends from Lyot crater to the east. During the morning, the EMM images show lee waves (atmospheric gravity waves). In the late morning, the lee waves rapidly change into clearly distinct dust storm texture/convective features. We track the evolution of both lee waves and a local dust storm between sunrise and mid‐afternoon. Also, we relate our observations to atmospheric dynamics. Our analysis is supported by the Mars Climate Database and radio occultation measurement data.
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- 2023
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11. A 350 MHz Green Bank Telescope Survey of Unassociated Fermi LAT Sources: Discovery and Timing of 10 Millisecond Pulsars
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P. Bangale, B. Bhattacharyya, F. Camilo, C. J. Clark, I. Cognard, M. E. DeCesar, E. C. Ferrara, P. Gentile, L. Guillemot, J. W. T. Hessels, T. J. Johnson, M. Kerr, M. A. McLaughlin, L. Nieder, S. M. Ransom, P. S. Ray, M. S. E. Roberts, J. Roy, S. Sanpa-arsa, G. Theureau, and M. T. Wolff
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Millisecond pulsars ,Pulsars ,Binary pulsars ,Radio pulsars ,Gamma-rays ,Astrophysics ,QB460-466 - Abstract
We have searched for radio pulsations toward 49 Fermi Large Area Telescope (LAT) 1FGL Catalog γ -ray sources using the Green Bank Telescope at 350 MHz. We detected 18 millisecond pulsars (MSPs) in blind searches of the data; 10 of these were discoveries unique to our survey. 16 are binaries, with eight having short orbital periods P _B < 1 day. No radio pulsations from young pulsars were detected, although three targets are coincident with apparently radio-quiet γ -ray pulsars discovered in LAT data. Here, we give an overview of the survey and present radio and γ -ray timing results for the 10 MSPs discovered. These include the only isolated MSP discovered in our survey and six short- P _B binary MSPs. Of these, three have very-low-mass companions ( M _c ≪ 0.1 M _⊙ ) and hence belong to the class of black widow pulsars. Two have more massive, nondegenerate companions with extensive radio eclipses and orbitally modulated X-ray emission consistent with the redback class. Significant γ -ray pulsations have been detected from nine of the discoveries. This survey and similar efforts suggest that the majority of Galactic γ -ray sources at high Galactic latitudes are either MSPs or relatively nearby nonrecycled pulsars, with the latter having on average a much smaller radio/ γ -ray beaming ratio as compared to MSPs. It also confirms that past surveys suffered from an observational bias against finding short- P _B MSP systems.
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- 2024
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12. Martian Ozone Observed by TGO/NOMAD‐UVIS Solar Occultation: An Inter‐Comparison of Three Retrieval Methods
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A. Piccialli, A. C. Vandaele, Y. Willame, A. Määttänen, L. Trompet, J. T. Erwin, F. Daerden, L. Neary, S. Aoki, S. Viscardy, I. R. Thomas, C. Depiesse, B. Ristic, J. P. Mason, M. R. Patel, M. J. Wolff, A. S. J. Khayat, G. Bellucci, and J.‐J. Lopez‐Moreno
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- 2023
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13. Hexagonal Prisms Form in Water‐Ice Clouds on Mars, Producing Halo Displays Seen by Perseverance Rover
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M. T. Lemmon, D. Toledo, V. Apestigue, I. Arruego, M. J. Wolff, P. Patel, S. Guzewich, A. Colaprete, Á. Vicente‐Retortillo, L. Tamppari, F. Montmessin, M. de laTorre Juarez, J. Maki, T. McConnochie, A. Brown, and J. F. Bell III
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Geophysics. Cosmic physics ,QC801-809 - Abstract
Abstract Observations by several cameras on the Perseverance rover showed a 22° scattering halo around the Sun over several hours during northern midsummer (solar longitude 142°). Such a halo has not previously been seen beyond Earth. The halo occurred during the aphelion cloud belt season and the cloudiest time yet observed from the Perseverance site. The halo required crystalline water‐ice cloud particles in the form of hexagonal columns large enough for refraction to be significant, at least 11 μm in diameter and length. From a possible 40–50 km altitude, and over the 3.3 hr duration of the halo, particles could have fallen 3–12 km, causing downward transport of water and dust. Halo‐forming clouds are likely rare due to the high supersaturation of water that is required but may be more common in northern subtropical regions during northern midsummer.
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- 2022
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14. The 2019 super-Eddington outburst of RX J0209.6−7427: detection of pulsations and constraints on the magnetic field strength
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G Vasilopoulos, P S Ray, K C Gendreau, P A Jenke, G K Jaisawal, C A Wilson-Hodge, T E Strohmayer, D Altamirano, W B Iwakiri, M T Wolff, S Guillot, C Malacaria, and A L Stevens
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- 2020
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15. Explaining NOMAD D/H Observations by Cloud‐Induced Fractionation of Water Vapor on Mars
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F. Daerden, L. Neary, G. Villanueva, G. Liuzzi, S. Aoki, R. T. Clancy, J. A. Whiteway, B. J. Sandor, M. D. Smith, M. J. Wolff, A. Pankine, A. Khayat, R. Novak, B. Cantor, M. Crismani, M. J. Mumma, S. Viscardy, J. Erwin, C. Depiesse, A. Mahieux, A. Piccialli, S. Robert, L. Trompet, Y. Willame, E. Neefs, I. R. Thomas, B. Ristic, and A. C. Vandaele
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- 2022
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16. ExoMars TGO/NOMAD‐UVIS Vertical Profiles of Ozone: 1. Seasonal Variation and Comparison to Water
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M. R. Patel, G. Sellers, J. P. Mason, J. A. Holmes, M. A. J. Brown, S. R. Lewis, K. Rajendran, P. M. Streeter, C. Marriner, B. G. Hathi, D. J. Slade, M. R. Leese, M. J. Wolff, A. S. J. Khayat, M. D. Smith, S. Aoki, A. Piccialli, A. C. Vandaele, S. Robert, F. Daerden, I. R. Thomas, B. Ristic, Y. Willame, C. Depiesse, G. Bellucci, and J.‐J. Lopez‐Moreno
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- 2021
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17. X-ray Emission from Magnetized Neutron Star Atmospheres at Low Mass Accretion Rates
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E Sokolova-Lapa, M Gornostaev, J Wilms, R Ballhausen, S Falkner, K Postnov, P Thalhammer, F Fürst, J A García, N Shakura, P A Becker, M T Wolff, K Pottschmidt, L Härer, and C Malacaria
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Astronomy - Abstract
Recent observations of X-ray pulsars at low luminosities allow, for the first time, to compare theoretical models for the emission from highly magnetized neutron star atmospheres at low mass accretion rates ( M ≲ 10(exp 15) g s(exp -1)) with the broadband X-ray data. The purpose of this paper is to investigate the spectral formation in the neutron star atmosphere at low M and to conduct a parameter study of physical properties of the emitting region. We obtain the structure of the static atmosphere, assuming that Coulomb collisions are the dominant deceleration process. The upper part of the atmosphere is strongly heated by the braking plasma, reaching temperatures of 30–40 keV, while its denser isothermal interior is much cooler (~2 keV). We numerically solve the polarized radiative transfer in the atmosphere with magnetic Compton scattering, free-free processes, and non-thermal cyclotron emission due to possible collisional excitations of electrons. The strongly polarized emitted spectrum has a double-hump shape that is observed in low-luminosity X-ray pulsars. A low-energy “thermal” component is dominated by extraordinary photons that can leave the atmosphere from deeper layers due to their long mean free path at soft energies. We find that a high-energy component is formed due to resonant Comptonization in the heated non-isothermal part of the atmosphere even in the absence of collisional excitations. The latter, however, affect the ratio of the two components. A strong cyclotron line originates from the optically thin, uppermost zone. A fit of the model to NuSTAR and Swift/XRT observations of GX3041 provides an accurate description of the data with reasonable parameters. The model can thus reproduce the characteristic double-hump spectrum observed in low-luminosity X-ray pulsars and provides insights into spectral formation.
- Published
- 2021
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18. The Mars 2020 Perseverance Rover Mast Camera Zoom (Mastcam-Z) Multispectral, Stereoscopic Imaging Investigation
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J. F. Bell, J. N. Maki, G. L. Mehall, M. A. Ravine, M. A. Caplinger, Z. J. Bailey, S. Brylow, J. A. Schaffner, K. M. Kinch, M. B. Madsen, A. Winhold, A. G. Hayes, P. Corlies, C. Tate, M. Barrington, E. Cisneros, E. Jensen, K. Paris, K. Crawford, C. Rojas, L. Mehall, J. Joseph, J. B. Proton, N. Cluff, R. G. Deen, B. Betts, E. Cloutis, A. J. Coates, A. Colaprete, K. S. Edgett, B. L. Ehlmann, S. Fagents, J. P. Grotzinger, C. Hardgrove, K. E. Herkenhoff, B. Horgan, R. Jaumann, J. R. Johnson, M. Lemmon, G. Paar, M. Caballo-Perucha, S. Gupta, C. Traxler, F. Preusker, M. S. Rice, M. S. Robinson, N. Schmitz, R. Sullivan, and M. J. Wolff
- Published
- 2021
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19. Measuring Mars Atmospheric Winds from Orbit
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Scott D Guzewich, J B Abshire, M M Baker, J M Battalio, T Bertrand, A J Brown, A Colaprete, A M Cook, D R Cremons, M M Crismani, A I Dave, M Day, M -C Desjean, M Elrod, L K Fenton, J Fisher, L L Gordley, P O Hayne, N G Heavens, J L Hollingsworth, D Jha, V Jha, M A Kahre, A SJ Khayat, A M Kling, S R Lewis, B T Marshall, G Martinez, L Montabone, M A Mischna, C E Newman, A Pankine, H Riris, J Shirley, M D Smith, A Spiga, X Sun, L K Tamppari, R M B Young, D Viudez-moreiras, G L Villanueva, M J Wolff, and R J Wilson
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Lunar And Planetary Science And Exploration - Published
- 2020
20. Determinants of transplantation success with cryopreserved ovarian tissue: data from 196 women of the FertiPROTEKT network
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L, Lotz, J, Bender-Liebenthron, R, Dittrich, L, Häberle, M W, Beckmann, A, Germeyer, M, Korell, N, Sänger, J S, Kruessel, M, von Wolff, and Monika, Wölfler
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Adult ,Cryopreservation ,Pregnancy Rate ,Ovary ,Rehabilitation ,Fertility Preservation ,Obstetrics and Gynecology ,Fertilization in Vitro ,Reproductive Medicine ,Pregnancy ,Humans ,Female ,Birth Rate ,Live Birth ,Retrospective Studies - Abstract
STUDY QUESTION What are the pregnancy and live birth rates for ovarian tissue transplantation and which factors are associated with the success rate? SUMMARY ANSWER Pregnancy and live birth rates per transplanted woman are 32.7% and 26.5% and success rate is associated with female age and first versus repeated transplantation. WHAT IS KNOWN ALREADY Live birth rates after ovarian tissue transplantations have been reported to be between around 24% and 41% per patient. Success rates seem to be negatively associated with increasing female age at the time of tissue cryopreservation and with pelvic radiation. Success rates are apparently not reduced after overnight transportation of ovarian tissue before freezing. STUDY DESIGN, SIZE, DURATION Registry analysis of 244 transplantations in 196 women, performed by 26 FertiPROTEKT network centres from 2007 to 2019 with follow-up till December 2020. PARTICIPANTS/MATERIALS, SETTING, METHODS Orthotopic ovarian tissue transplantations were performed in 196 women, 191 with previous malignant and 5 with previous non-malignant diseases. Size of transplanting centres varied between 1 and 100 transplantations per centre (median: 2). Factors possibly associated with success rate such as female age, first and repeated transplantation, experience of the transplanting centre and overnight transportation of the ovarian tissue before freezing were analysed. MAIN RESULTS AND THE ROLE OF CHANCE Average age of all 196 transplanted women was 31.3 years (SD 5.2; range 17–44) at the time of cryopreservation of tissue and 35.9 years (SD 4.8; range 23–47) at the time of transplantation. Pregnancy rate was 30.6% (95% CI, 24.2–37.6%) per first transplantation and 32.7% (95% CI, 26.1–39.7%) per patient. Pregnancy rate was higher after first transplantation (30.6% (95% CI, 24.2–37.6%)) compared to second and subsequent transplantations (11.8% (95% CI, 3.3–27.5%)). Live birth rate per first transplantation was 25.0% (95% CI, 19.1–31.7%) and per patient 26.5% (95% CI, 20.5–33.3%). Success rate decreased with increasing age at the time of ovarian tissue freezing. Live birth rate was 28.2% (95% CI, 20.9–36.3%) in women 35 years. Pregnancy rates after first transplantation were higher in centres who had performed ≥10 transplantations (35.1%) compared to centres with LIMITATIONS, REASONS FOR CAUTION The data were drawn from a registry analysis. Data such as ovarian reserve and premature ovarian insufficiency were not available for all women. Data might be influenced by different follow-up policies of the centres. WIDER IMPLICATIONS OF THE FINDINGS The study reveals the high potential of ovarian tissue freezing and transplantation, but only if freezing is performed in younger women. The study suggests focus should be placed on the first and not on repeated transplantations. It also opens the discussion of whether transplantation should rather be performed by experienced centres. STUDY FUNDING/COMPETING INTEREST(S) No funding. No competing interests. TRIAL REGISTRATION NUMBER N/A.
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- 2022
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21. The Radius of PSR J0740+6620 from NICER and XMM-Newton Data
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M. C. Miller, F. K. Lamb, A. J. Dittmann, S. Bogdanov, Z. Arzoumanian, K. C. Gendreau, S. Guillot, W. C. G. Ho, J. M. Lattimer, M. Loewenstein, S. M. Morsink, P. S. Ray, M. T. Wolff, C. L. Baker, T. Cazeau, S. Manthripragada, C. B. Markwardt, T. Okajima, S. Pollard, I. Cognard, H. T. Cromartie, E. Fonseca, L. Guillemot, M. Kerr, A. Parthasarathy, T. T. Pennucci, S. Ransom, and I. Stairs
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- 2021
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22. A NICER view of PSR J0030+0451: Implications for the Dense Matter Equation of State
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G Raaijmakers, T E Riley, A L Watts, S K Greif, S M Morsink, K Hebeler, A Schwenk, T Hinderer, S Nissanke, S Guillot, Z Arzoumanian, S Bogdanov, D Chakrabarty, K C Gendreau, W C G Ho, J M Lattimer, R M Ludlam, and M J Wolff
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Lunar And Planetary Science And Exploration - Abstract
Both the mass and radius of the millisecond pulsar PSRJ0030+0451 have been inferred via pulse-profile modeling of X-ray data obtained by NASA’s Neutron Star Interior Composition Explorer (NICER) mission. In this Letter we study the implications of the mass–radius inference reported for this source by Riley et al. for the dense matter equation of state (EoS), in the context of prior information from nuclear physics at low densities. Using a Bayesian framework we infer central densities and EoS properties for two choices of high-density extensions: a piecewise-polytropic model and a model based on assumptions of the speed of sound in dense matter. Around nuclear saturation density these extensions are matched to an EoS uncertainty band obtained from calculations based on chiral effective field theory interactions, which provide a realistic description of atomic nuclei as well as empirical nuclear matter properties within uncertainties. We further constrain EoS expectations with input from the current highest measured pulsar mass; together, these constraints offer a narrow Bayesian prior informed by theory as well as laboratory and astrophysical measurements. The NICER mass–radius likelihood function derived by Riley et al. using pulse-profile modeling is consistent with the highest-density region of this prior. The present relatively large uncertainties on mass and radius for PSR J0030+0451 offer, however, only a weak posterior information gain over the prior. We explore the sensitivity to the inferred geometry of the heated regions that give rise to the pulsed emission, and find a small increase in posterior gain for an alternative (but less preferred) model. Lastly, we investigate the hypothetical scenario of increasing the NICER exposure time for PSRJ0030+0451.
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- 2019
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23. MARCI-Observed Clouds in the Hellas Basin during Northern Hemisphere Summer on Mars: Interpretation with the NASA/Ames Legacy Mars Global Climate Model
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M. A. Kahre, R. M. Haberle, J. L. Hollingsworth, and M. J. Wolff
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Lunar And Planetary Science And Exploration - Abstract
We present a study that is motivated by a population of water ice clouds in the Hellas Basin that has been observed by the MARs Color Imager (MARCI) instrument on the Mars Reconnaissance Orbiter (MRO) to persist throughout the majority of Northern Hemisphere (NH) summer. Although water ice clouds are present in Hellas at very low opacities throughout NH spring, they noticeably thicken after L(sub s) 60° and continue to do so until their peak optical thickness is attained at L(sub s) ~120°. They dissipate rapidly from L(sub s) 120° to 150°, and by L(sub s) 150°, the only clouds in Hellas are on the southern side of the basin and are indistinguishable from the polar hood clouds. We use the NASA/Ames Legacy Mars Global Climate Model (GCM), which is supported by the Agency’s Mars Climate Modeling Center, to investigate the dynamical and microphysical mechanisms that control the formation and evolution of Hellas water ice clouds. We show that water is transported from the North Polar Residual Cap (NPRC) southward across the equator and into the Hellas region. Water vapor is confined down low by cloud formation in the aphelion cloud belt, thus limiting the effectiveness of transport by the zonal mean overturning circulation (i.e., the Hadley cell). Thus, contrary to the commonly held conceptual understanding that the Hadley cell controls cross-equatorial water transport during this season, we show that the southward transport of water is done primarily in the vapor phase by stationary eddies at nearly all latitudes, including across the equator. Clouds form near the surface in the basin as moist air mixes with cold polar air on the western side of Hellas and are subsequently transported clockwise around the north side of the basin by the low-level cyclonic circulation. The simulated Hellas clouds have small particle sizes (~3–5 μm), are very low, and exist as long as the NPRC is exposed.
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- 2019
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24. High-precision x-ray timing of three millisecond pulsars with NICER: Stability estimates and comparison with radio
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J S Deneva, P. S. Ray, A Lommen, S M Ransom, S Bogdanov, M. Kerr, K. S. Wood, Z Arzoumanian, K. Black, J. Doty, K C Gendreau, S. Guillot, A. Harding, N. Lewandowska, C Malacaria, C B Markwardt, S. Price, L Winternitz, M. T. Wolff, L. Guillemot, I. Cognard, P. T. Baker, H. Blumer, P R Brook, H T Cromartie, P B Demorest, M E DeCesar, T. Dolch, J. A. Ellis, R D Ferdman, E C Ferrara, E Fonseca, N Garver-Daniels, P A Gentile, M. L. Jones, M. T. Lam, D R Lorimer, R. S. Lynch, M. A. McLaughlin, C. Ng, D J Nice, T T Pennucci, R Spiewak, I H Stairs, K Stovall, J K Swiggum, S. J. Vigeland, and W. W. Zhu
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Astrophysics - Abstract
The Neutron Star Interior Composition Explorer (NICER) is an X-ray astrophysics payload on the International Space Station. It enables unprecedented high-precision timing of millisecond pulsars (MSPs) without the pulse broadening and delays due to dispersion and scattering within the interstellar medium that plague radio timing. We present initial timing results from a year of data on the MSPs PSR B1937+21 and PSR J0218+4232, and nine months of data on PSR B1821−24. NICER time-of-arrival uncertainties for the three pulsars are consistent with theoretical lower bounds and simulations based on their pulse shape templates and average source and background photon count rates. To estimate timing stability, we use the σz measure, which is based on the average of the cubic coefficients of polynomial fits to subsets of timing residuals. So far we are achieving timing stabilities σz≈3×10−14 for PSR B1937+21 and on the order of 10−12 for PSRs B1821−24 and J0218+4232. Within the span of our NICER data we do not yet see the characteristic break point in the slope of σz; detection of such a break would indicate that further improvement in the cumulative root-mean-square timing residual is limited by timing noise. We see this break point in our comparison radio data sets for PSR B1821−24 and PSR B1937+21 on timescales of >2 yr.
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- 2019
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25. The Association between Hazardous Drinking Indicators and Drinking Problem Concerns among Sexual Minority Women
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Margaret M. Paschen-Wolff, Jennifer M. Putney, Thomas Corbeil, Tse-Hwei Choo, and Tonda L. Hughes
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General Medicine - Abstract
Sexual minority women (SMW) report high rates of hazardous drinking (HD), treatment utilization that is not commensurate with need, and low perceived alcohol use severity. This study examined SMW's drinking problem concerns by sexual identity and other demographic characteristics, and the strength of associations between endorsement of unique HD indicators and drinking problem concerns. Data were from a supplemental sample of SMW added in Wave 3 of the longitudinal, community-based Chicago Health and Life Experiences of Women (CHLEW) study. HD was measured using a validated 13-item HD Index (HDI). Multivariable logistic regression models examined independent associations between past-five-year drinking problem concerns and each HD indicator. Twelve HD indicators were significantly associated with past-five-year drinking problem concerns, adjusting for age and sexual identity. Adjusted odds ratios varied from 2.44 for driving drunk to 15.52 for drinking first thing in the morning. After adjusting for number of HD indicators endorsed, associations were no longer significant, indicating that number of endorsed indicators was a more important predictor of drinking problem concerns than were individual HD indicators. Early intervention and harm reduction strategies could support SMW in addressing salient aspects of HD before progression to alcohol use disorder.
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- 2021
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26. The State of the Research on Opioid Outcomes Among Lesbian, Gay, Bisexual, Transgender, Queer, and Other Sexuality- and Gender-Diverse Populations: A Scoping Review
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Margaret M. Paschen-Wolff, Jeremy D. Kidd, and Emily Allen Paine
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Psychiatry and Mental health ,Urology ,Public Health, Environmental and Occupational Health ,Obstetrics and Gynecology ,Dermatology ,Review - Abstract
PURPOSE: Research on opioid misuse, opioid use disorder (OUD), and overdose (i.e., opioid outcomes) among lesbian, gay, bisexual, transgender, queer, and other populations within the LGBTQ umbrella (LGBTQ+) remains sparse. The purpose of this scoping review was to characterize the state of the research on opioid outcomes among LGBTQ+ populations, and identify gaps in the extant literature and areas for future research. METHODS: We conducted a scoping review of peer-reviewed, English language articles published between 2011 and 2020 that examined opioid outcomes among LGBTQ+ populations in the CINAHL, Embase, PubMed, and PsycINFO databases. We extracted data from articles that focused on opioid outcomes within their specific aims or purpose. We include a general summary for articles that secondarily described opioid outcomes among LGBTQ+ populations. RESULTS: Of 113 published studies that examined opioid outcomes among LGBTQ+ populations, 10% (n = 11) were specifically designed to focus on this topic. Across studies, bisexual populations, particularly women, were at highest risk for opioid misuse and OUD. Few studies examined opioid outcomes by more than one dimension of sexual orientation (n = 3, 27%), race and/or ethnicity (n = 3, 27%), or age (n = 5, 45%). Only two included transgender or gender diverse samples; only one explicitly measured gender identity. CONCLUSIONS: Future research is needed to understand the impact of the opioid epidemic on LGBTQ+ people, particularly transgender and other gender diverse individuals, and the intersectional role of race, ethnicity, and age in opioid disparities among LGBTQ+ individuals. Additional research could contribute to the development of much-needed affirming OUD treatment and other services for LGBTQ+ people.
- Published
- 2023
27. A Frontal Dust Storm in the Northern Hemisphere at Solar Longitude 97—An Unusual Observation by the Emirates Mars Mission
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C. Gebhardt, B. K. Guha, R. M. B. Young, and M. J. Wolff
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Geophysics ,General Earth and Planetary Sciences - Published
- 2022
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28. Neues und praktisch Relevantes aus der gynäkologischen Endokrinologie, Menopausen- und Reproduktionsmedizin
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Petra Stute and M. von Wolff
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Gynecology ,medicine.medical_specialty ,Reproductive Medicine ,business.industry ,Endocrinology, Diabetes and Metabolism ,Pediatrics, Perinatology and Child Health ,Reproductive medicine ,Obstetrics and Gynecology ,Medicine ,business - Published
- 2021
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29. Impact of progesterone on skin and hair in menopause – a comprehensive review
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Petra Stute, S Gasser, M. von Wolff, and K Heidemeyer
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medicine.medical_specialty ,Administration, Topical ,medicine.medical_treatment ,Administration, Oral ,030209 endocrinology & metabolism ,Signs and symptoms ,Skin Aging ,03 medical and health sciences ,0302 clinical medicine ,medicine ,Humans ,Beneficial effects ,Progesterone ,030219 obstetrics & reproductive medicine ,integumentary system ,Progestogen ,business.industry ,Estrogen Replacement Therapy ,Obstetrics and Gynecology ,General Medicine ,Middle Aged ,medicine.disease ,Dermatology ,Menopause ,medicine.anatomical_structure ,Tolerability ,Scalp ,Female ,Hormone therapy ,business ,Hair - Abstract
In clinical practice, micronized progesterone (MP) is frequently recommended to treat signs and symptoms of skin and hair aging in menopausal women. The aim of this comprehensive review was to evaluate whether topically or systemically applied MP may effectively prevent or slow down signs of skin and hair aging. Three out of six identified studies reported an impact of MP on skin aging markers in menopausal women. Of these, two studies reported a benefit: one for topically applied MP, another for systemically applied combined menopausal hormone therapy (MHT) comprising MP as progestogen for endometrial protection. Tolerability and safety of MP were good. However, there was no study investigating the impact of MP on menopausal scalp hair. In conclusion, delay of skin aging comprises lifestyle adjustment, antioxidants, and several esthetic procedures. In menopausal women, MHT displays beneficial effects on skin aging. There is poor quality but promising scientific evidence for MP displaying anti-aging skin effects in menopausal women. However, good quality studies are needed.
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- 2021
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30. P-391 Early pregnancy complications after frozen-thawed embryo transfer in different cycle regimes: Increased risks for miscarriages and bleedings in Hormone replacement cycles
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M Von Wolff, J Levy, and J Pape
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Reproductive Medicine ,Rehabilitation ,Obstetrics and Gynecology - Abstract
Study question What are the associations between cycle regime and early pregnancy complications after frozen-thawed embryo transfers and what are the respective life birth rates per pregnancy? Summary answer Hormone replacement cycles are associated with doubled odd ratios of bleedings and miscarriages What is known already So far, there are only few studies which analysed both, the associations between cycle regime and early pregnancy complications as well as life birth rates (LBR) per pregnancy after frozen-thawed embryo transfer (FET). In 2017, a Cochrane analysis did not find sufficient evidence to support the use of a specific cycle regimen in preference to another since there were only four direct comparisons. In 2021, a network meta-analysis including 26 RCTs and 113 cohort studies revealed lowest LBR in hormone replacement cycles compared with other endometrial preparation protocols but without stating the reasons for the lowest LBR. Study design, size, duration Retrospective cohort study analyzing a total of 7342 pregnancies after FET that were registered in the Swiss IVF Registry from 2014 to 2019. Participants/materials, setting, methods Women were divided into three groups according to the different cycle regimens: Natural Cycles (NC-FET, n = 998), low-dose Stimulation Cycles (SC-FET, n = 984) and Hormone Replacement Cycles (HRC-FET, n = 5360) leading to pregnancy. Outcomes included early pregnancy complications such as bleedings, miscarriages and ectopic pregnancies, deliveries (including intrauterine deaths) and LBR. Incidences were compared using Fisher exact and Chi-square tests. Multivariate mixed model analysis with pregnancy complications as outcome was performed. Main results and the role of chance The incidences of bleeding in first trimester (NC: 3.5%, SC: 4.3%, HRC: 8.4%; p Multivariate analysis revealed doubled odds ratio of bleedings in first trimester (aOR 1.92; 95% CI 1.30-2.81; p Limitations, reasons for caution The data were drawn from a registry analysis with limited information on patients’ characteristics. Data such as BMI were not available. As the study is based on a register analysis, some errors in data collection cannot be excluded. Wider implications of the findings This is the latest large European register study evaluating early pregnancy complications and LBR per pregnancy after FET by cycle regime. Miscarriage rate was highest in HRC-FET which can be translated into lower LBR. Thus, HRC-FET should be avoided if medically possible, to achieve better pregnancy outcomes. Trial registration number Non required
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- 2022
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31. P-776 Maternal and neonatal outcomes of singletons and twins after frozen-thawed embryo transfer in different cycle regimes: Increased risks of hypertensive disorders in Hormone replacement cycles
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J Pape, J Lévy, and M Von Wolff
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Reproductive Medicine ,Rehabilitation ,Obstetrics and Gynecology - Abstract
Study question What are the associations between cycle regime and maternal and neonatal outcomes after frozen-thawed embryo transfer leading to singleton or twin life birth? Summary answer Hormone replacement cycles are associated with higher and natural or low-dose stimulation with lower risks for bleeding, hypertension and preeclampsia in singleton and twin pregnancies. What is known already So far, there is no consensus on optimal cycle regimen for endometrial preparation: Frozen-thawed embryo transfers can be either performed in Natural Cycles (NC-FET), low-dose Stimulation Cycles (SC-FET) or Hormone Replacement Cycles (HRC-FET). In previous studies, HRC-FET was shown to be associated with an increase of serious maternal and neonatal complications, i.e. preeclampsia (doubled to tripled risk), postpartum hemorrhage (doubled risk), placenta accrete (sixfold risk), post-term birth (sixfold risk) and Caesarean section (doubled risk) compared to NC-FET or SC-FET. These results indicate that risks are increased in cycles in which the development of follicles and luteal bodies is medically inhibited. Study design, size, duration Retrospective cohort study analyzing a total of 4636 singletons and also 544 twins born after FET that were registered in the Swiss IVF Registry from 2014 to 2019. Participants/materials, setting, methods Women were divided into three groups according to the cycle regimes: NC-FET (n = 776), SC-FET (n = 758) and HRC-FET (n = 3646) leading to life birth. Maternal outcomes included pregnancy complications such as bleedings, isolated hypertension (>140/90 mmHg) and preeclampsia. Neonatal outcomes comprised gestational age and weight, mode of delivery and neonatal status. Incidences were compared using Fisher exact or Chi-square tests. Multivariate mixed model analysis was performed for singleton and twin pregnancies. Main results and the role of chance In singleton pregnancies, the incidences of bleeding in first trimester (NC: 2.8%, SC: 2.6%, HRC: 7.0%; p In twin pregnancies, the incidences of preeclampsia were significantly higher in HRC-FET (NC: 2.7%, SC: 1.0%, HRC: 7.2%, p = 0.026). There were no differences in delivery mode between cycle regime. Multivariate analysis revealed numerically higher odds ratio of preeclampsia in HRC-FET vs. NC-FET (aOR 2.57; 95% CI 0.55 - 12.07; p = 0.232) and in HRC-FET vs. SC-FET (aOR 4.07; 95% CI 0.47 - 34.91; p = 0.2) but without reaching significance. Limitations, reasons for caution The data were drawn from a registry analysis with limited information on patients’ characteristics. Data such as BMI were not available. As the study is based on a register analysis, some errors in data collection cannot be excluded. Wider implications of the findings This is the first large register study to demonstrate a clear association between the three different cycle regimes and pregnancy complications both in singleton and twin pregnancies. HRC-FET showed the highest maternal risks of hypertensive disorders, therefore, it should be avoided and replaced by SC-FET or NC-FET if medically possible. Trial registration number Not applicable.
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- 2022
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32. O-033 Ovarian tissue transplantations in 196 women by FertiPROTEKT– live birth rate of 26.5% per woman is associated with female age and first versus repeated transplantation
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L Lotz, J Bender-Liebenthron, R Dittrich, L Häberle, M W Beckmann, A Germeyer, M Korell, N Sänger, and M Von Wolff
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Reproductive Medicine ,Rehabilitation ,Obstetrics and Gynecology - Abstract
Study question What is the live birth rate of ovarian tissue transplantation and which factors are associated with the success rate? Summary answer Live birth rate per transplanted woman is 26.5% and the success rate is associated with female age and first versus repeated transplantation. What is known already Live birth rates after tissue transplantations have been reported to be between around 24% and 41% per patient. Success rates seem to be negatively associated with increasing female age at the time of tissue cryopreservation and with pelvic radiation. Success rates are apparently not reduced after overnight transportation of tissue before freezing. Study design, size, duration Registry analysis of 244 transplantations in 196 women, performed by 26 centers of the FertiPROTEKT network from 2007 to 2019 with a follow up till 12/2020. Participants/materials, setting, methods Orthotopic transplantation was performed in 196 women, 191 with previous malignant and 5 with previous non-malignant diseases. Size of transplanting centers varied between 1 and 100 transplantations per center (average: 9.5 ± 19.6 transplantations). Factors possibly associated with success rate such as female age, first and repeated transplantation, experience of the transplanting center and overnight transportation of the tissue before freezing were analysed. Main results and the role of chance Average age of all transplanted 196 women was 31.3 years (SD, standard deviation, 5.2) at the time of cryopreservation (range 17-44y) and 35.9 years (SD 4.8, range 23-47) at the time of first transplantation. Overall pregnancy rate was 30.6% (95% CI, 24.2-37.6%) per first transplantation and 32.7% (95% CI, 26.1-39.7) per patient. Overall live birth rate per first transplantation was 25.0% (95% CI, 19.1-31.7%) and per patient 26.5% (95% CI, 20.5-33.3%). Pregnancy and live birth rates were calculated and graphically expressed as a continuous function of age to allow estimation of success rates per age group. Success rate decreased with increasing age at the time of tissue freezing. Pregnancy rate after first transplantation was 34.5% (95% CI, 26.7-42.9%) in women Pregnancy rate was higher after 1st transplantation (30.6% (95% CI, 24.2-37.6%)) compared to 2nd and more transplantations (11.8% (95% CI, 3.3-27.5%)). Pregnancy rates after 1st transplantation was higher in centers with ≥10 transplantations (35.1%) compared to centers with Success rates was not different in women with and without overnight transportation of tissue before cryopreservation. Limitations, reasons for caution The data were drawn from a registry analysis. Data such as ovarian reserve and premature ovarian insufficiency were not available for all women. Data might be influenced by different follow up policies of the centers. Wider implications of the findings The study reveals the high potential of ovarian tissue freezing and transplantation but only if freezing is performed in younger women. The study suggests to better focus on the first and not on repeated transplantations. It also opens the discussion if transplantation should rather be performed by experienced centres. Trial registration number Non
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- 2022
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33. P-593 Low dose clomiphene citrate does not reduce implantation rates - a cohort study based on modified Natural Cycle IVF
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F Grädel, V Mitter, A Kohl Schwartz, and M Von Wolff
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Reproductive Medicine ,Rehabilitation ,Obstetrics and Gynecology - Abstract
Study question Does low dose clomiphene citrate (CC) reduce implantation and eventually pregnancy and live birth rates? Summary answer Low dose CC does not reduce implantation rate and pregnancy and live birth rates – based on the model of modified Natural Cycle IVF (NC-IVF). What is known already CC is commonly used for ovulation induction in the treatment of anovulation or idiopathic infertility. It is also added to NC-IVF cycles to mildly stimulate follicular growth and to inhibit LH surge. CC reduces endometrial thickness and affects endometrial function. Therefore it is assumed that CC negatively affects implantation and thereby reduced pregnancy and live birth per embryo. However, previous studies have shown inconsistent results as previous studies mainly calculated pregnancy rates per cycle but not implantation rate per embryo. Study design, size, duration This cohort study included embryos transferred in NC–IVF and CC-NC-IVF cycles. Women with a maximum age of 42 years were treated at a university hospital between 2011 and 2016. Clinical pregnancy rate and live birth rate per embryo transferred and miscarriage rate per amniotic sac were calculated. Participants/materials, setting, methods A daily dose of 25mg of CC starting on day 5-7 of the cycle until the day of ovulation trigger was applied. A modified mixed effect Poisson regression model was used to account for the number of cycles in the same women and the number of embryos in the same cycle to achieve rate ratios (RR). Adjustment for maternal age, parity, type of infertility, duration of subfertility and indication for IVF were made. Main results and the role of chance 499 couples underwent a total of 1043 IVF cycles, 453 NC-IVF and 590 CC-NC-IVF cycles. Baseline characteristics of both groups were not different. The additional administration of CC did neither decrease clinical pregnancy rate (aRR 1.16; 95% CI: 0.90 – 1.50)[MV1] nor live birth rate per transferred embryo (aRR 1.20; 95% CI: 0.89 – 1.62). Miscarriage rate was also not different in CC-NC-IVF compared to NC-IVF (aRR 1.05; 95%: CI 0.63 – 1.76). Limitations, reasons for caution This study does not allow to draw any conclusions regarding the effect of higher CC dosages. As randomization was not performed, some bias regarding the choice of IVF treatment cannot be completely excluded. Wider implications of the findings As this study revealed for the first time that low dose CC does not affect implantation, low does CC can be used for many different treatments. However, further studies are required to evaluate if this also applies to higher CC dosages. Trial registration number not applicable
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- 2022
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34. Experiences with evacuation route planning algorithms.
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Shashi Shekhar, KwangSoo Yang, Venkata M. V. Gunturi, Lydia Manikonda, Dev Oliver, Xun Zhou, Betsy George, Sangho Kim 0001, Jeffrey M. R. Wolff, and Qingsong Lu
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- 2012
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35. Evacuation Planning: A Spatial Network Database Approach.
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Xun Zhou, Betsy George, Sangho Kim 0001, Jeffrey M. R. Wolff, Qingsong Lu, and Shashi Shekhar
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- 2010
36. Dimensions of Sexual Orientation as Predictors of STI-Related Outcomes Among Women: An Examination of 2011–2017 National Survey of Family Growth Data
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Lauren M. Porsch, Hongbin Zhang, Nicholas A. Grosskopf, Christian Grov, and Margaret M. Paschen-Wolff
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Adult ,Male ,Adolescent ,business.industry ,Sexual Behavior ,Sexually Transmitted Diseases ,Homosexuality, Female ,General Medicine ,Sexual and Gender Minorities ,Young Adult ,National Survey of Family Growth ,Sexual orientation ,Bisexuality ,Humans ,Medicine ,Female ,Papillomavirus Vaccines ,business ,Demography - Abstract
Background: To estimate sexual orientation associated disparities in sexually transmitted infection (STI)-related outcomes across multiple dimensions of sexual orientation. Methods: Using pooled 20...
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- 2020
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37. Sexual Minority Women’s Sexual and Reproductive Health Literacy: A Qualitative Descriptive Study
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Madelyne Z. Greene, Margaret M. Paschen-Wolff, and Tonda L. Hughes
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Adult ,medicine.medical_specialty ,media_common.quotation_subject ,Sexually Transmitted Diseases ,Health literacy ,Article ,Literacy ,Sexual and Gender Minorities ,Arts and Humanities (miscellaneous) ,Health care ,medicine ,Humans ,media_common ,Reproductive health ,business.industry ,Knowledge level ,Public health ,Information literacy ,Public Health, Environmental and Occupational Health ,Health Literacy ,Sexual minority ,Reproductive Health ,Family medicine ,Women's Health ,Female ,Sexual Health ,business ,Psychology - Abstract
Although sexual minority women (SMW) are at risk for cervical cancer and sexually transmitted infections (STIs), they may not seek preventative sexual and reproductive health care at the same rates as their heterosexual peers. We conducted a qualitative descriptive study of 22 adult SMW, a subsample of participants enrolled in the Chicago Health and Life Experiences of Women study. The aim was to describe the sexual and reproductive health literacy of this community sample based on qualitative themes, using an integrated model of health literacy. This model considers not only access to information but also understanding, appraisal, and application of information. We found that family of origin, health care providers, and school-based sexual education were the most important sources of sexual and reproductive health information. Participants described their understanding, appraisal, and application of sexual and reproductive health information as interdependent concepts. Pap test literacy and decision making were strongly independent, with SMW seeking various sources of information, or were driven by health care providers, with SMW following instructions and trusting provider advice. STI-related literacy hinged on whether the participant perceived SMW as at risk for STIs. Our findings reinforce that simply having access to information is insufficient to enact health behaviors that reflect full literacy. Findings have implications for health care providers, who should provide evidence-based recommendations for their SMW clients, and for public health practitioners and educators, who could make sexual health education more inclusive of and specific to the needs of SMW.
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- 2020
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38. Neues und praktisch Relevantes in der gynäkologischen Endokrinologie und Reproduktionsmedizin
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M. von Wolff and P. Stute
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Reproductive Medicine ,Endocrinology, Diabetes and Metabolism ,Pediatrics, Perinatology and Child Health ,Obstetrics and Gynecology - Published
- 2020
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39. Clomiphene citrate stimulated cycles - additional gonadotrophin stimulation increases endometrium thickness without increasing implantation rate
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I Magaton, A Helmer, M Roumet, P Stute, and M Von Wolff
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610 Medicine & health ,female genital diseases and pregnancy complications ,hormones, hormone substitutes, and hormone antagonists ,reproductive and urinary physiology - Abstract
It is known that Clomiphene citrate (CC) reduces endometrial thickness, but it is unknown if additional gonadotrophin stimulation increases endometrial thickness and if this has an effect on implantation rate in in vitro fertilization (IVF). The retrospective study included 263 minimal stimulation IVF-cycles stimulated with 25 mg CC per day (CC- IVF), and 161 IVF-cycles stimulated with CC plus 75IU hMG (human Menopausal Gonadotrophin) per day (CC/ hMG-IVF). Endometrial and oestradiol (E2) measurements were analysed between day -4 and 0 (0 = day of oocyte retrieval) and the association of endometrial thickness and treatment on implantation rates were studied after multiple adjustments. It was shown that on day 0, endometrium was significantly thicker in CC/hMG-IVF versus CC-IVF cycles (9.81 ±2.68 versus 9.06 ±2.54 mm, p = 0.005). However, increased endometrial thickness did not have an effect on implantation and live birth rates. In conclusion, gonadotrophins should not be added to low dose CC treated IVF cycles just to increase endometrial thickness as increased endometrial thickness does not increase implantation rate.
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- 2022
40. The impact of micronized progesterone on cardiovascular events - a systematic review
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L. M. Kaemmle, A. Stadler, H. Janka, M. von Wolff, and P. Stute
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Estrogen Replacement Therapy ,Obstetrics and Gynecology ,Humans ,Estrogens ,Female ,General Medicine ,Venous Thromboembolism ,Progesterone ,Ischemic Stroke - Abstract
Biologically identical menopausal hormone therapy (MHT) including micronized progesterone (MP) has gained much attention. We aimed to assess the impact of MP in combined MHT on venous and arterial thromboembolism (VTE/ATE) (e.g. deep venous thrombosis/pulmonary embolism, myocardial infarction [MI] and ischemic stroke). Articles were eligible if they provided endpoints regarding cardiovascular events and use of exogenous MP. Literature searches were designed and executed for the databases Medline, Embase, CINAHL, the Cochrane Library, ClinicalTrials.gov and interdisciplinary database Web of Science. Twelve studies consisting of randomized controlled trials (RCTs), case-control studies and prospective or retrospective cohort studies were included, and risk of bias was assessed. Only a minority assessed thromboembolic events as a primary endpoint, showing that in contrast to norpregnane derivatives, primary and recurrent VTE risk was not altered by combining estrogens with MP, which was also true for ischemic stroke risk. Similarly, in placebo-controlled RCTs assessing VTE/ATE as adverse events there were no significant intergroup differences. Studies on MI as a primary endpoint are missing. In conclusion, while available data suggest that MP as a component in combined MHT may have a neutral effect on the vascular system, more RCTs investigating the impact of MP alone or in combined MHT on vascular primary endpoints are needed.
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- 2022
41. ExoMars TGO/NOMAD‐UVIS vertical profiles of ozone: Part 1 – Seasonal variation and comparison to water
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M. D. Smith, Frank Daerden, James Holmes, Stephen R. Lewis, C. Marriner, Alain Khayat, Ann Carine Vandaele, Yannick Willame, Manish R. Patel, Mark Leese, Séverine Robert, J. J. Lopez-Moreno, M.A.J. Brown, M. J. Wolff, Shohei Aoki, Cédric Depiesse, B. Hathi, Arianna Piccialli, Ian Thomas, Bojan Ristic, Kylash Rajendran, Paul Streeter, Giancarlo Bellucci, Jon Mason, G. Sellers, D.J. Slade, UK Space Agency, Belgian Science Policy Office, European Space Agency, European Commission, Ministerio de Economía y Competitividad (España), Ministerio de Ciencia e Innovación (España), Agenzia Spaziale Italiana, and National Fund for Scientific Research (Belgium)
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Ozone ,010504 meteorology & atmospheric sciences ,Mars Exploration Program ,Seasonality ,medicine.disease ,Atmospheric sciences ,7. Clean energy ,01 natural sciences ,Occultation ,chemistry.chemical_compound ,Geophysics ,chemistry ,13. Climate action ,Space and Planetary Science ,Geochemistry and Petrology ,0103 physical sciences ,Earth and Planetary Sciences (miscellaneous) ,medicine ,Environmental science ,Spectroscopy ,010303 astronomy & astrophysics ,0105 earth and related environmental sciences - Abstract
This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited., We present ∼1.5 Mars Years (MY) of ozone vertical profiles, covering LS = 163° in MY34 to LS = 320° in MY35, a period which includes the 2018 global dust storm. Since April 2018, the Ultraviolet and Visible Spectrometer channel of the Nadir and Occultation for Mars Discovery (NOMAD) instrument aboard the ExoMars Trace Gas Orbiter has observed the vertical, latitudinal and seasonal distributions of ozone. Around perihelion, the relative abundance of both ozone and water (from coincident NOMAD measurements) increases with decreasing altitude below ∼40 km. Around aphelion, localized decreases in ozone abundance exist between 25 and 35 km coincident with the location of modeled peak water abundances. High-latitude (>±55°), high altitude (40–55 km) equinoctial ozone enhancements are observed in both hemispheres (LS ∼350°–40°) and discussed in the companion article to this work (Khayat et al., 2021). The descending branch of the main Hadley cell shapes the observed ozone distribution at LS = 40°–60°, with the possible signature of a northern hemisphere thermally indirect cell identifiable from LS = 40°–80°. Morning terminator observations show elevated ozone abundances with respect to evening observations, with average ozone abundances between 20 and 40 km an order of magnitude higher at sunrise compared to sunset, attributed to diurnal photochemical partitioning along the line of sight between ozone and O or fluctuations in water abundance. The ozone retrievals presented here provide the most complete global description of Mars ozone vertical distributions to date as a function of season and latitude. © 2021. The Authors., The NOMAD experiment is led by the Royal Belgian Institute for Space Aeronomy (IASB-BIRA), with Co-PI teams in the United Kingdom (Open University), Spain (IAA-CSIC) and Italy (INAF-IAPS). This work was enabled through UK Space Agency grants ST/V002295/1, ST/P001262/1, ST/V005332/1, ST/S00145X/1 and ST/R001405/1, and this project acknowledges funding by the Belgian Science Policy Office (BELSPO), with the financial and contractual coordination by the ESA Prodex Office (PEA 4000103401, 4000121493), by Spanish Ministry of Science and Innovation (MCIU) and by European funds under grants PGC2018-101836-B-I00 and ESP2017-87143-R (MINECO/FEDER), as well as by the Italian Space Agency through grant 2018-2-HH.0. Support is acknowledged from the STFC under Grant ST/N50421X/1 and The Open University for a PhD studentship. This work was supported by the Belgian Fonds de la Recherche Scientifique – FNRS under grant number 30442502 (ET_HOME). S. A. is “Chargé de Recherches” at the F.R.S.-FNRS. SR thanks BELSPO for the FED-tWIN funding (PRF-2019-077 - RT-MOLEXO). This project has received funding from the European Union's Horizon 2020 research and innovation program under grant agreement No 101004052 (RoadMap project). The IAA/CSIC team acknowledges financial support from the State Agency for Research of the Spanish MCIU through the “Center of Excellence Severo Ochoa" award for the Instituto de Astrofísica de Andalucía (SEV-2017-0709). US investigators were supported by the National Aeronautics and Space Administration.
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- 2021
42. The Emirates Exploration Imager (EXI) Instrument on the Emirates Mars Mission (EMM) Hope Mission
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S. Knappmiller, J. Knavel, C. Fisher, R. Shuping, D. Summers, M. Osterloo, P. Bay, K. Fortier, Andrew R. Jones, K. Looney, M. Alshamsi, B. Fenton, Virginia Ann Drake, C. Jeppesen, G. Otzinger, M. A. Khoory, S. Gerwig, G. Newcomb, A. Curtin, Marc L. Miller, M. Fisher, P. Lujan, Emily B. Pilinski, J. Espejo, M. J. Wolff, Heather Reed, E. DeVito, B. Heberlein, K. Bryant, H. Passe, Zach Castleman, S. Wade, D. Ebuen, L. Walton, J. L. Yaptengco, P. Sicken, N. Brennan, K. Koski, and J. Farren
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Martian ,Astronomy and Astrophysics ,Atmosphere of Mars ,Mars Exploration Program ,law.invention ,Orbiter ,Planetary science ,Space and Planetary Science ,Observatory ,law ,Planet ,Environmental science ,Timekeeping on Mars ,Remote sensing - Abstract
The Emirates Exploration Imager (EXI) on-board the Emirates Mars Mission (EMM) offers both regional and global imaging capabilities for studies of the Martian atmosphere. EXI is a framing camera with a field-of-view (FOV) that will easily capture the martian disk at the EMM science orbit periapsis. EXI provides 6 bandpasses nominally centered on 220, 260, 320, 437, 546, 635 nm using two telescopes (ultraviolet (UV) and visible(VIS)) with separate optics and detectors. Images of the full-disk are acquired with a resolution of 2–4 km per pixel, where the variation is driven by periapsis and apoapsis points of the orbit, respectively. By combining multiple observations within an orbit with planetary rotation, EXI is able to provide diurnal sampling over most of the planet on the scale of 10 days. As a result, the EXI dataset allows for the delineation of diurnal and seasonal timescales in the behavior of atmospheric constituents such as water ice clouds and ozone.This combination of temporal and spatial distinguishes EXI from somewhat similar imaging systems, including the Mars Color Imager (MARCI) onboard the Mars Reconnaissance Orbiter (MRO) (Malin et al. in Icarus 194(2):501–512, 2008) and the various cameras on-board the Hubble Space Telescope (HST; e.g., James et al. in J. Geophys. Res. 101(E8):18,883–18,890, 1996; Wolff et al. in J. Geophys. Res. 104(E4):9027–9042, 1999). The former, which has comparable spatial and spectral coverage, possesses a limited local time view (e.g., mid-afternoon). The latter, which provides full-disk imaging, has limited spatial resolution through most of the Martian year and is only able to provide (at most) a few observations per year given its role as a dedicated, queue-based astrophysical observatory. In addition to these unique attributes of the EXI observations, the similarities with other missions allows for the leveraging of both past and concurrent observations. For example, with MARCI, one can build on the ∼6 Mars years of daily global UV images as well as those taken concurrently with EXI.
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- 2021
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43. Southern African Lesbian and Bisexual Women Responses to Symptoms of Sexually Transmitted Infections
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Ian Southey-Swartz, Theo G. M. Sandfort, Vasu Reddy, Radhika M Wikramanayake, Margaret M. Paschen-Wolff, and Zethu Matebeni
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Adult ,Sexual partner ,medicine.medical_specialty ,Sexual Behavior ,Sexually Transmitted Diseases ,Black People ,Interpersonal communication ,Logistic regression ,Article ,South Africa ,Young Adult ,Arts and Humanities (miscellaneous) ,Surveys and Questionnaires ,Health care ,medicine ,Humans ,General Psychology ,business.industry ,Public health ,Homosexuality, Female ,Sexual orientation ,Bisexuality ,Female ,Lesbian ,business ,Psychology ,Demography ,Intrapersonal communication - Abstract
Sexually transmitted infections (STI) in lesbian and bisexual women is a relatively unexplored topic, particularly for women from low and middle-income countries. Despite perceptions that women who have sex with women (WSW) are at negligible risk for contracting STI, existing research demonstrates that WSW do become infected with STI. Given the opposition between assumptions of invulnerability and the observed risks, we explored how WSW would respond to symptoms of STI (i.e., wait until symptoms passed, see a medical doctor, and inform sexual partners). We used data collected as part of a collaboration between academic researchers and community-based LGBTQ organizations in Botswana, Namibia, South Africa, and Zimbabwe. Chi-square tests were used to test whether participants’ responses to hypothetical STI symptoms varied in relation to several intrapersonal, interpersonal, and structural factors. Multivariable logistic regression (backward) was used to assess whether these variables were independently associated with women’s responses. Most women would be proactive in response to potential STI symptoms and would see a medical doctor. However, most women would not inform their sexual partner of symptoms of STI. Findings demonstrate several intrapersonal, interpersonal, and structural factors that influence WSW’s health agency, and show a clustering of high-risk factors among women who would not be proactive about their health. Our findings suggest the need for improved health and health care of WSW in Southern Africa.
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- 2020
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44. 369. Lifestyle habits among pregnant women in denmark during the first covid-19 lockdown compared with a historical period – a hospital-based cross-sectional study
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H. Hegard, A. Rom, K. Christensen, L. Broberg, S. Høgh, C. Christiansen, N. Nathan, M. De Wolff, and P. Damm
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Reproductive Medicine ,Obstetrics and Gynecology - Published
- 2022
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45. Sexual Orientation Disparities in Pregnancy Risk Behaviors and Pregnancy Among Sexually Active Teenage Girls: Updates from the Youth Risk Behavior Survey
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Cindy B. Veldhuis, Gregory Phillips, Tonda L. Hughes, Bethany G. Everett, Blair Turner, and Margaret M. Paschen-Wolff
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Pregnancy risk ,Adolescent ,Alcohol Drinking ,Substance-Related Disorders ,Sexual Behavior ,Urology ,education ,Dermatology ,law.invention ,Condoms ,Sexually active ,Risk-Taking ,Condom ,Pregnancy ,Risk Factors ,law ,Surveys and Questionnaires ,medicine ,Humans ,Heterosexuality ,Contraception Behavior ,Sexual identity ,Uncertainty ,Public Health, Environmental and Occupational Health ,Obstetrics and Gynecology ,Original Articles ,Youth Risk Behavior Survey ,medicine.disease ,Self Concept ,Psychiatry and Mental health ,Contraception ,Logistic Models ,Sexual behavior ,Pregnancy in Adolescence ,Sexual orientation ,Bisexuality ,Female ,Psychology ,Clinical psychology - Abstract
Purpose: The purpose of this study was to determine the extent to which sexual identity and/or sexual behaviors were associated with pregnancy risk factors (condom use, alcohol or other drug use before sex, and World Health Organization [WHO] Tier 1 [i.e., intrauterine device, implant] or Tier 2 [i.e., injectable, pill, patch, or ring] contraception use) and teen pregnancy among female high school students who reported having a sexual relationship with a male partner. Methods: Data were from the Youth Risk Behavior Survey (YRBS; 2005–2015) (n = 63,313). Logistic regression was used to analyze sexual identity and behavior disparities in pregnancy risk behaviors and teen pregnancy. Interactions between sexual identity and behavior were also tested. All models adjusted for the YRBS complex sampling frame. Results: Girls who reported being unsure of their sexual identity were less likely to use condoms or a WHO Tier 1 or Tier 2 contraceptive method at last sex, and more likely to report alcohol or other drug use at last sex than heterosexual girls. Girls who identified as lesbian were also less likely to use a condom at last sex, and girls who reported both male and female sexual partners were more likely to report alcohol or other drug use and less likely to use condoms at last sex. Girls who identified as bisexual were more likely to report pregnancy during teenage years than girls who identified as heterosexual. Conclusion: Our results support the need to assess both sexual identity and sexual behavior in research on teen pregnancy and pregnancy risk. Furthermore, the finding that girls who were unsure of their sexual identity showed heightened risk highlights the need for additional research that includes this group.
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- 2019
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46. Neues und praktisch Relevantes der gynäkologischen Endokrinologie, Reproduktionsmedizin und Pränatalmedizin – Teil 2
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Petra Stute and M. von Wolff
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Reproductive Medicine ,business.industry ,Endocrinology, Diabetes and Metabolism ,Pediatrics, Perinatology and Child Health ,Obstetrics and Gynecology ,Medicine ,business - Published
- 2019
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47. Neues und praktisch Relevantes der gynäkologischen Endokrinologie, Reproduktionsmedizin und Pränatalmedizin – Teil 1
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B. Mosimann, M. von Wolff, and Petra Stute
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Reproductive Medicine ,business.industry ,Endocrinology, Diabetes and Metabolism ,Pediatrics, Perinatology and Child Health ,Obstetrics and Gynecology ,Medicine ,business - Published
- 2019
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48. Simulating the experience of searching for LGBTQ-specific opioid use disorder treatment in the United States
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Margaret M, Paschen-Wolff, Rachel, Velasquez, Nicole, Aydinoglo, and Aimee N C, Campbell
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Sexual Behavior ,Gender Identity ,Medicine (miscellaneous) ,Opioid-Related Disorders ,United States ,Buprenorphine ,Analgesics, Opioid ,Opiate Overdose ,Sexual and Gender Minorities ,Psychiatry and Mental health ,Clinical Psychology ,Opiate Substitution Treatment ,Humans ,Female ,Pshychiatric Mental Health - Abstract
Lesbian, gay, bisexual, transgender, and queer (LGBTQ) populations experience opioid-related disparities compared to heterosexual and cisgender populations. LGBTQ-specific services are needed within opioid use disorder (OUD) treatment settings to minimize treatment barriers; research on the availability and accessibility of such services is limited. The purpose of the current study was to mimic the experience of an LGBTQ-identified individual searching for LGBTQ-specific OUD treatment services, using the SAMHSA National Directory of Drug and Alcohol Abuse Treatment Facilities - 2018 (Treatment Directory).We contacted treatment facilities listed in the Treatment Directory as providing both medications for OUD (MOUD) and "special programs/groups" for LGBTQ clients within states with the top 20 highest national opioid overdose rates. We used descriptive statistics to characterize the outcome of calls; and the overall number of facilities offering LGBTQ-specific services, MOUD, and both LGBTQ-specific services and MOUD in each state by 100,000 state population and in relation to opioid overdose mortality rates (programs-per-death rate).Of the N = 570 treatment facilities contacted, n = 446 (78.25 %) were reached and answered our questions. Of n = 446 reached (all of which advertised both MOUD and LGBTQ-specific services), n = 366 (82.06 %) reported offering MOUD, n = 125 (28.03 %) reported offering special programs or groups for LGBTQ clients, and n = 107 (23.99 %) reported offering both MOUD and LGBTQ-specific services. Apart from Washington, DC, New Mexico, South Carolina, and West Virginia, which did not have any facilities that reported offering both MOUD and LGBTQ-specific services, Illinois had the lowest, and Michigan had the highest programs-per-death rate. Most of the northeastern states on our list (all but New Hampshire) clustered in the top two quarters of programs-per-death rates, while most of southeastern states (all but North Carolina) clustered in the bottom two quarters of programs-per-death rates.The lack of LGBTQ-specific OUD treatment services may lead to missed opportunities for supporting LGBTQ people most in need of treatment; such treatment is especially crucial to prevent overdose mortality and improve the health of LGBTQ populations across the United States, particularly in the southeast.
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- 2022
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49. Durable Viral Suppression Among People with HIV and Problem Substance Use in the Era of Universal Antiretroviral Treatment
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Michael Castro, Tse Hwei Choo, Aimee N.C. Campbell, Rachael Lazar, Susan Tross, Christine Borges, Don C. Des Jarlais, Martina Pavlicova, Graham Harriman, Sarah L. Braunstein, Robert H. Remien, Margaret M. Paschen-Wolff, and Hayley Berg
- Subjects
medicine.medical_specialty ,Social Psychology ,Poverty ,business.industry ,Substance-Related Disorders ,Public health ,Public Health, Environmental and Occupational Health ,Context (language use) ,HIV Infections ,Viral Load ,medicine.disease ,Syndemic ,Article ,Health psychology ,Infectious Diseases ,Acquired immunodeficiency syndrome (AIDS) ,Anti-Retroviral Agents ,medicine ,Humans ,Supportive housing ,business ,Psychiatry ,Viral load ,Reproductive health ,Aged - Abstract
This study explored factors associated with durable viral suppression (DVS) among two groups of people living with HIV (PLWH) and problem substance use in the context of universal antiretroviral treatment initiation. Participants (N = 99) were recruited between 2014–2017 from public sexual health clinics [SHC] and a hospital detoxification unit [detox]). DVS (NYC HIV surveillance registry) was defined as two consecutive viral load tests ≤ 200 copies/mL, ≤ 90 days apart, with all other viral loads suppressed over 12 or 18 months. Detox participants were significantly older, with more unstable housing/employment, substance use severity, and longer-term HIV vs. SHC participants. Older age, opioid and stimulant use disorder were significantly associated with lower odds of DVS, while fulltime employment and stable housing were significantly associated with higher odds of DVS at 12-month follow-up. Patterns held at 18-month follow-up. Co-located substance use and HIV services, funding for supportive housing, and collaborative patient-provider relationships could improve DVS among populations with the syndemic of problem substance use, poverty, and long-term HIV.
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- 2021
50. P–610 Optimal timing of ovulation triggering to achieve highest success rates in natural cycles – an analysis based on follicle size and estradiol concentration in NC-IVF
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A Helmer, M Vo. Wolff, P Stute, D Surbek, O Stalder, and I M Magaton
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Andrology ,Follicle ,Reproductive Medicine ,media_common.quotation_subject ,Natural cycle ,Rehabilitation ,Obstetrics and Gynecology ,Biology ,Ovulation ,media_common - Abstract
Study question What is the best follicle size, estradiol (E2) serum concentration and endometrial thickness to trigger ovulation in natural cycles? Summary answer Optimal follicles size is 18–22mm but estrogen concentration also need to be considered to maximize oocyte maturity and to minimize premature LH surge. What is known already Timing of the ovulation triggering is essential in infertility treatments based on natural menstrual cycles such as optimized vaginal intercourse, intrauterine inseminations and thawing cycles without hormone replacement therapy. Common parameters to define the day of ovulation triggering are the follicle size and the estrogen concentration. However, data on follicle size and estrogen concentration are either derived from longitudinal evaluations of few ideal participants, are not very detailed or were studied in stimulated cycles. The model of Natural Cycle IVF (NC-IVF) which provides more detailed information has never been used to study this issue. Study design, size, duration Retrospective cross sectional analysis of monofollicular NC-IVF cycles. Follicle size, E2 and LH serum concentrations and endometrial thickness were evaluated on day –5 to 0 (day 0 = day of aspiration). Ovulation was triggered with 5.000IE HCG 36h before aspiration if follicle size was 14–22mm. Patients with irregular cycles, endometriosis >II°, cycles with azoospermia or cryptozoospermia and with inconsistent data were excluded. 606 cycles from 290 women were analysed from 2016 to 2019. Participants/materials, setting, methods Mean age of women undergoing NC-IVF was 35.8±4.0y, median 36y [IQ-range: 34;39]. Each woman performed mean 2.1±1.4, median: 2 [IQ-range: 1–3] NC-IVF cycles at an university based IVF center. All parameters were analysed inter and intraindividually and associations were adjusted for maturity of oocyte, zygote development rate, embryo score, implantation rate and live birth rate. Associations were adjusted for age, cause of infertility and number of previous transfers. Main results and the role of chance Follicle size, E2 concentration and endometrial thickness increased constantly over time. The increase was computed for each cycle without considering any correlation intra patient, revealing an increase of follicle size by 1.04±0.64mm, an increase of E2 concentration by 167.3±76.8pmol/L and endometrial thickness by 0.69±0.59mm per day. Based on a multivariate adjusted model with follicle size, E2 and their interaction, number of retrieved oocytes was associated with E2 concentration (aOR 1.80, 95% CI 1.05–3.11; p = 0.034). Maturity of oocytes was associated not only with E2 concentration (aOR 1.84, 95% CI 1.15–2.94; p = 0.010) but also with follicle size (aOR 1.24, 95% CI 1.01–1.53; p = 0.037) and so was also the interaction of both parameters (aOR 0.96, 95% CI 0.94–0.99; p = 0.017). LH surge was calculated to start in 25% of cases at an E2 level of 545 pmol/l, in 50% of cases at 907pmol/l and in 75% of cases at an E2 level of 1531pmol/l. Live birth rate in cycles with follicles size 14–17 mm was 2.2–3.5% per initiated cycle and in cycles with follicle size 18–22mm 8.5–12.5%. Limitations, reasons for caution Cross sectional studies provides less precise information than longitudinal studies. Follicle size and endometrial thickness were evaluated by several physicians possibly causing some imprecision. Wider implications of the findings: There is a trend towards natural treatment cycles. The study contribute to an optimisation of infertility treatments involving natural cycles. The study gives guidance about the number of days required after a follicle monitoring to reach the optimal time for triggering ovulation. Trial registration number Not applicable
- Published
- 2021
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