232 results on '"Silva LO"'
Search Results
2. Laser-driven, ion-scale magnetospheres in laboratory plasmas. I. Experimental platform and first results
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Schaeffer, DB, Cruz, FD, Dorst, RS, Cruz, F, Heuer, PV, Constantin, CG, Pribyl, P, Niemann, C, Silva, LO, and Bhattacharjee, A
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Nuclear and Plasma Physics ,Space Sciences ,Physical Sciences ,Astronomical and Space Sciences ,Atomic ,Molecular ,Nuclear ,Particle and Plasma Physics ,Classical Physics ,Fluids & Plasmas ,Nuclear and plasma physics ,Space sciences - Abstract
Magnetospheres are a ubiquitous feature of magnetized bodies embedded in a plasma flow. While large planetary magnetospheres have been studied for decades by spacecraft, ion-scale “mini” magnetospheres can provide a unique environment to study kinetic-scale, collisionless plasma physics in the laboratory to help validate models of larger systems. In this work, we present preliminary experiments of ion-scale magnetospheres performed on a unique high-repetition-rate platform developed for the Large Plasma Device at the University of California, Los Angeles. The experiments utilize a high-repetition-rate laser to drive a fast plasma flow into a pulsed dipole magnetic field embedded in a uniform magnetized background plasma. 2D maps of the magnetic field with high spatial and temporal resolution are measured with magnetic flux probes to examine the evolution of magnetosphere and current density structures for a range of dipole and upstream parameters. The results are further compared to 2D particle-in-cell simulations to identify key observational signatures of the kinetic-scale structures and dynamics of the laser-driven plasma. We find that distinct 2D kinetic-scale magnetopause and diamagnetic current structures are formed at higher dipole moments, and their locations are consistent with predictions based on pressure balances and energy conservation.
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- 2022
3. Proton-driven plasma wakefield acceleration in AWAKE.
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Gschwendtner, E, Turner, M, Adli, E, Ahuja, A, Apsimon, O, Apsimon, R, Bachmann, A-M, Batsch, F, Bracco, C, Braunmüller, F, Burger, S, Burt, G, Buttenschön, B, Caldwell, A, Chappell, J, Chevallay, E, Chung, M, Cooke, D, Damerau, H, Deubner, LH, Dexter, A, Doebert, S, Farmer, J, Fedosseev, VN, Fiorito, R, Fonseca, RA, Friebel, F, Garolfi, L, Gessner, S, Goddard, B, Gorgisyan, I, Gorn, AA, Granados, E, Grulke, O, Hartin, A, Helm, A, Henderson, JR, Hüther, M, Ibison, M, Jolly, S, Keeble, F, Kelisani, MD, Kim, S-Y, Kraus, F, Krupa, M, Lefevre, T, Li, Y, Liu, S, Lopes, N, Lotov, KV, Martyanov, M, Mazzoni, S, Minakov, VA, Molendijk, JC, Moody, JT, Moreira, M, Muggli, P, Panuganti, H, Pardons, A, Peña Asmus, F, Perera, A, Petrenko, A, Pukhov, A, Rey, S, Sherwood, P, Silva, LO, Sosedkin, AP, Tuev, PV, Velotti, F, Verra, L, Verzilov, VA, Vieira, J, Welsch, CP, Wendt, M, Williamson, B, Wing, M, Woolley, B, and Xia, G
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Nuclear and Plasma Physics ,Synchrotrons and Accelerators ,Physical Sciences ,AWAKE ,plasma wakefield acceleration ,seeded self modulation ,AWAKE Collaboration ,physics.acc-ph ,General Science & Technology - Abstract
In this article, we briefly summarize the experiments performed during the first run of the Advanced Wakefield Experiment, AWAKE, at CERN (European Organization for Nuclear Research). The final goal of AWAKE Run 1 (2013-2018) was to demonstrate that 10-20 MeV electrons can be accelerated to GeV energies in a plasma wakefield driven by a highly relativistic self-modulated proton bunch. We describe the experiment, outline the measurement concept and present first results. Last, we outline our plans for the future. This article is part of the Theo Murphy meeting issue 'Directions in particle beam-driven plasma wakefield acceleration'.
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- 2019
4. Acceleration of electrons in the plasma wakefield of a proton bunch
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Adli, E, Ahuja, A, Apsimon, O, Apsimon, R, Bachmann, A-M, Barrientos, D, Batsch, F, Bauche, J, Berglyd Olsen, VK, Bernardini, M, Bohl, T, Bracco, C, Braunmüller, F, Burt, G, Buttenschön, B, Caldwell, A, Cascella, M, Chappell, J, Chevallay, E, Chung, M, Cooke, D, Damerau, H, Deacon, L, Deubner, LH, Dexter, A, Doebert, S, Farmer, J, Fedosseev, VN, Fiorito, R, Fonseca, RA, Friebel, F, Garolfi, L, Gessner, S, Gorgisyan, I, Gorn, AA, Granados, E, Grulke, O, Gschwendtner, E, Hansen, J, Helm, A, Henderson, JR, Hüther, M, Ibison, M, Jensen, L, Jolly, S, Keeble, F, Kim, S-Y, Kraus, F, Li, Y, Liu, S, Lopes, N, Lotov, KV, Maricalva Brun, L, Martyanov, M, Mazzoni, S, Medina Godoy, D, Minakov, VA, Mitchell, J, Molendijk, JC, Moody, JT, Moreira, M, Muggli, P, Öz, E, Pasquino, C, Pardons, A, Peña Asmus, F, Pepitone, K, Perera, A, Petrenko, A, Pitman, S, Pukhov, A, Rey, S, Rieger, K, Ruhl, H, Schmidt, JS, Shalimova, IA, Sherwood, P, Silva, LO, Soby, L, Sosedkin, AP, Speroni, R, Spitsyn, RI, Tuev, PV, Turner, M, Velotti, F, Verra, L, Verzilov, VA, Vieira, J, Welsch, CP, Williamson, B, Wing, M, Woolley, B, and Xia, G
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Nuclear and Plasma Physics ,Physical Sciences ,Affordable and Clean Energy ,General Science & Technology - Abstract
High-energy particle accelerators have been crucial in providing a deeper understanding of fundamental particles and the forces that govern their interactions. To increase the energy of the particles or to reduce the size of the accelerator, new acceleration schemes need to be developed. Plasma wakefield acceleration1-5, in which the electrons in a plasma are excited, leading to strong electric fields (so called 'wakefields'), is one such promising acceleration technique. Experiments have shown that an intense laser pulse6-9 or electron bunch10,11 traversing a plasma can drive electric fields of tens of gigavolts per metre and above-well beyond those achieved in conventional radio-frequency accelerators (about 0.1 gigavolt per metre). However, the low stored energy of laser pulses and electron bunches means that multiple acceleration stages are needed to reach very high particle energies5,12. The use of proton bunches is compelling because they have the potential to drive wakefields and to accelerate electrons to high energy in a single acceleration stage13. Long, thin proton bunches can be used because they undergo a process called self-modulation14-16, a particle-plasma interaction that splits the bunch longitudinally into a series of high-density microbunches, which then act resonantly to create large wakefields. The Advanced Wakefield (AWAKE) experiment at CERN17-19 uses high-intensity proton bunches-in which each proton has an energy of 400 gigaelectronvolts, resulting in a total bunch energy of 19 kilojoules-to drive a wakefield in a ten-metre-long plasma. Electron bunches are then injected into this wakefield. Here we present measurements of electrons accelerated up to two gigaelectronvolts at the AWAKE experiment, in a demonstration of proton-driven plasma wakefield acceleration. Measurements were conducted under various plasma conditions and the acceleration was found to be consistent and reliable. The potential for this scheme to produce very high-energy electron bunches in a single accelerating stage20 means that our results are an important step towards the development of future high-energy particle accelerators21,22.
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- 2018
5. Challenges of inclusive education in regular education from 6th to 9th grade in a municipal school of the city of Porto Grande, state of Amapá
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Silva, Lo Ruama De Sousa, primary and Lima, Tiago Caminha de, additional
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- 2024
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6. Snowmass 2013 Computing Frontier: Accelerator Science
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Spentzouris, P, Cormier-Michel, E, Joshi, C, Amundson, J, An, W, Bruhwiler, DL, Cary, JR, Cowan, B, Decyk, VK, Esarey, E, Fonseca, RA, Friedman, A, Geddes, CGR, Grote, DP, Kourbanis, I, Leemans, WP, Lu, W, Mori, WB, Ng, C, Qiang, Ji, Roberts, T, Ryne, RD, Schroeder, CB, Silva, LO, Tsung, FS, Vay, J-L, and Vieira, J
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physics.acc-ph - Abstract
This is the working summary of the Accelerator Science working group of theComputing Frontier of the Snowmass meeting 2013. It summarizes the computingrequirements to support accelerator technology in both Energy and IntensityFrontiers.
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- 2013
7. A Bright Spatially-Coherent Compact X-ray Synchrotron Source
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Kneip, S, McGuffey, C, Martins, JL, Martins, SF, Bellei, C, Chvykov, V, Dollar, F, Fonseca, R, Huntington, C, Kalintchenko, G, Maksimchuk, A, Mangles, SPD, Matsuoka, T, Nagel, SR, Palmer, C, Schreiber, J, Phuoc, K Ta, Thomas, AGR, Yanovsky, V, Silva, LO, Krushelnick, K, and Najmudin, Z
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physics.plasm-ph ,physics.acc-ph - Abstract
Each successive generation of x-ray machines has opened up new frontiers inscience, such as the first radiographs and the determination of the structureof DNA. State-of-the-art x-ray sources can now produce coherent high brightnesskeV x-rays and promise a new revolution in imaging complex systems on nanometreand femtosecond scales. Despite the demand, only a few dedicated synchrotronfacilities exist worldwide, partially due the size and cost of conventional(accelerator) technology. Here we demonstrate the use of a recently developedcompact laser-plasma accelerator to produce a well-collimated,spatially-coherent, intrinsically ultrafast source of hard x-rays. This methodreduces the size of the synchrotron source from the tens of metres tocentimetre scale, accelerating and wiggling a high electron chargesimultaneously. This leads to a narrow-energy spread electron beam and x-raysource that is >1000 times brighter than previously reported plasma wiggler andthus has the potential to facilitate a myriad of uses across the whole spectrumof light-source applications.
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- 2009
8. EFEITO CITOTÓXICO DOS COMPOSTOS DE COORDENAÇÃO SOBRE CÉLULAS DE LINHAGEM DE LINFOMA DE BURKITT
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Silva, LO, primary, Vernaschi, MM, additional, Walter, LO, additional, Steimbach, JV, additional, Silva, MEC, additional, Horn, CF, additional, and Santos-Silva, MC, additional
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- 2023
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9. Transition between Instability and Seeded Self-Modulation of a Relativistic Particle Bunch in Plasma
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Batsch, F, Muggli, P, Agnello, R, Ahdida, CC, Amoedo Goncalves, MC, Andrebe, Y, Apsimon, O, Apsimon, R, Bachmann, A-M, Baistrukov, MA, Blanchard, P, Braunmüller, F, Burrows, PN, Buttenschön, B, Caldwell, A, Chappell, J, Chevallay, E, Chung, M, Cooke, DA, Damerau, H, Davut, C, Demeter, G, Deubner, HL, Doebert, S, Farmer, J, Fasoli, A, Fedosseev, VN, Fiorito, R, Fonseca, RA, Friebel, F, Furno, I, Garolfi, L, Gessner, S, Gorgisyan, I, Gorn, AA, Granados, E, Granetzny, M, Graubner, T, Grulke, O, Gschwendtner, E, Hafych, V, Helm, A, Henderson, JR, Hüther, M, Kargapolov, I Yu, Kim, S-Y, Kraus, F, Krupa, M, Lefevre, T, Liang, L, Liu, S, Lopes, N, Lotov, KV, Martyanov, M, Mazzoni, S, Medina Godoy, D, Minakov, VA, Moody, JT, Moon, K, Morales Guzmán, PI, Moreira, M, Nechaeva, T, Nowak, E, Pakuza, C, Panuganti, H, Pardons, A, Perera, A, Pucek, J, Pukhov, A, Ramjiawan, RL, Rey, S, Rieger, K, Schmitz, O, Senes, E, Silva, LO, Speroni, R, Spitsyn, RI, Stollberg, C, Sublet, A, Topaloudis, A, Torrado, N, Tuev, PV, Turner, M, Velotti, F, Verra, L, Verzilov, VA, Vieira, J, Vincke, H, Welsch, CP, Wendt, M, Wing, M, Wiwattananon, P, Wolfenden, J, Woolley, B, Xia, G, Zepp, M, Zevi Della Porta, G, AWAKE Collaboration, and Collaboration, AWAKE
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Accelerator Physics (physics.acc-ph) ,Proton ,Other Fields of Physics ,Phase (waves) ,FOS: Physical sciences ,General Physics and Astronomy ,Ciências Naturais::Ciências Físicas [Domínio/Área Científica] ,01 natural sciences ,Instability ,Relativistic particle ,physics.plasm-ph ,0103 physical sciences ,010306 general physics ,physics.acc-ph ,Physics ,acceleration ,Plasma ,electron-beam ,Accelerators and Storage Rings ,Physics - Plasma Physics ,ddc ,Plasma Physics (physics.plasm-ph) ,Transverse plane ,Amplitude ,Physics::Accelerator Physics ,Physics - Accelerator Physics ,Atomic physics ,Event (particle physics) - Abstract
We use a relativistic ionization front to provide various initial transverse wakefield amplitudes for the self-modulation of a long proton bunch in plasma. We show experimentally that, with sufficient initial amplitude ($\ge(4.1\pm0.4)$ MV/m), the phase of the modulation along the bunch is reproducible from event to event, with 3 to 7% (of 2$\pi$) rms variations all along the bunch. The phase is not reproducible for lower initial amplitudes. We observe the transition between these two regimes. Phase reproducibility is essential for deterministic external injection of particles to be accelerated., Comment: Letter and Supplemental Material, 6 figures, 8 pages
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- 2021
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10. Erratum to: EuPRAXIA Conceptual Design Report
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Assmann, RW, Weikum, MK, Akhter, T, Alesini, D, Alexandrova, AS, Anania, MP, Andreev, NE, Andriyash, I, Artioli, M, Aschikhin, A, Audet, T, Bacci, A, Barna, IF, Bartocci, S, Bayramian, A, Beaton, A, Beck, A, Bellaveglia, M, Beluze, A, Bernhard, A, Biagioni, A, Bielawski, S, Bisesto, FG, Bonatto, A, Boulton, L, Brandi, F, Brinkmann, R, Briquez, F, Brottier, F, Bruendermann, E, Buescher, M, Buonomo, B, Bussmann, MH, Bussolino, G, Campana, P, Cantarella, S, Cassou, K, Chance, A, Chen, M, Chiadroni, E, Cianchi, A, Cioeta, F, Clarke, JA, Cole, JM, Costa, G, Couprie, M-E, Cowley, J, Croia, M, Cros, B, Crump, PA, D'Arcy, R, Dattoli, G, Del Dotto, A, Delerue, N, Del Franco, M, Delinikolas, P, De Nicola, S, Dias, JM, Di Giovenale, D, Diomede, M, Di Pasquale, E, Di Pirro, G, Di Raddo, G, Dorda, U, Erlandson, AC, Ertel, K, Esposito, A, Falcoz, F, Falone, A, Fedele, R, Ferran Pousa, A, Ferrario, M, Filippi, F, Fils, J, Fiore, G, Fiorito, R, Fonseca, RA, Franzini, G, Galimberti, M, Gallo, A, Galvin, TC, Ghaith, A, Ghigo, A, Giove, D, Giribono, A, Gizzi, LA, Gruener, FJ, Habib, AF, Haefner, C, Heinemann, T, Helm, A, Hidding, B, Holzer, BJ, Hooker, SM, Hosokai, T, Huebner, M, Ibison, M, Incremona, S, Irman, A, Iungo, F, Jafarinia, FJ, Jakobsson, O, Jaroszynski, DA, Jaster-Merz, S, Joshi, C, Kaluza, M, Kando, M, Karger, OS, Karsch, S, Khazanov, E, Khikhlukha, D, Kirchen, M, Kirwan, G, Kitegi, C, Knetsch, A, Kocon, D, Koester, P, Kononenko, OS, Korn, G, Kostyukov, I, Kruchinin, KO, Labate, L, Le Blanc, C, Lechner, C, Lee, P, Leemans, W, Lehrach, A, Li, X, Li, Y, Libov, V, Lifschitz, A, Lindstrom, CA, Litvinenko, V, Lu, W, Lundh, O, Maier, AR, Malka, V, Manahan, GG, Mangles, SPD, Marcelli, A, Marchetti, B, Marcouille, O, Marocchino, A, Marteau, F, Martinez de la Ossa, A, Martins, JL, Mason, PD, Massimo, F, Mathieu, F, Maynard, G, Mazzotta, Z, Mironov, S, Molodozhentsev, AY, Morante, S, Mosnier, A, Mostacci, A, Mueller, A-S, Murphy, CD, Najmudin, Z, Nghiem, PAP, Nguyen, F, Niknejadi, P, Nutter, A, Osterhoff, J, Oumbarek Espinos, D, Paillard, J-L, Papadopoulos, DN, Patrizi, B, Pattathil, R, Pellegrino, L, Petralia, A, Petrillo, V, Piersanti, L, Pocsai, MA, Poder, K, Pompili, R, Pribyl, L, Pugacheva, D, Reagan, BA, Resta-Lopez, J, Ricci, R, Romeo, S, Rossetti Conti, M, Rossi, AR, Rossmanith, R, Rotundo, U, Roussel, E, Sabbatini, L, Santangelo, P, Sarri, G, Schaper, L, Scherkl, P, Schramm, U, Schroeder, CB, Scifo, J, Serafini, L, Sharma, G, Sheng, ZM, Shpakov, V, Siders, CW, Silva, LO, Silva, T, Simon, C, Simon-Boisson, C, Sinha, U, Sistrunk, E, Specka, A, Spinka, TM, Stecchi, A, Stella, A, Stellato, F, Streeter, MJV, Sutherland, A, Svystun, EN, Symes, D, Szwaj, C, Tauscher, GE, Terzani, D, Toci, G, Tomassini, P, Torres, R, Ullmann, D, Vaccarezza, C, Valleau, M, Vannini, M, Vannozzi, A, Vescovi, S, Vieira, JM, Villa, F, Wahlstrom, C-G, Walczak, R, Walker, PA, Wang, K, Welsch, A, Welsch, CP, Weng, SM, Wiggins, SM, Wolfenden, J, Xia, G, Yabashi, M, Zhang, H, Zhao, Y, Zhu, J, Zigler, A, Engineering & Physical Science Research Council (EPSRC), Commission of the European Communities, and Science and Technology Facilities Council (STFC)
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Science & Technology ,02 Physical Sciences ,Physics ,Fluids & Plasmas ,Physical Sciences ,Physics, Multidisciplinary ,ddc:530 ,01 Mathematical Sciences ,Applied Physics - Abstract
Figure 20.1 was not correct in the published article. The original article has been corrected. The published apologizes for the inconvenience.
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- 2020
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11. EFEITO CITOTÓXICO DO DERIVADO DA IMIDAZOPIRIDINA (DSH65) E SEUS PRINCIPAIS MECANISMOS DE MORTE CELULAR EM CÉLULAS DE LINFOMA DE BURKITT
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Silva, LO, Salles, HD, Schneider, PH, Walter, LO, Steimbach, JV, Affeldt, RF, and Santos-Silva, MC
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- 2022
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12. Status of the Horizon 2020 EuPRAXIA conceptual design study
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Weikum, MK, Akhter, T, Alesini, D, Alexandrova, AS, Anania, MP, Andreev, NE, Andriyash, IA, Aschikhin, A, Assmann, RW, Audet, T, Bacci, A, Barna, IF, Beaton, A, Beck, A, Beluze, A, Bernhard, A, Bielawski, S, Bisesto, FG, Brandi, F, Brinkmann, R, Bruendermann, E, Buescher, M, Bussmann, MH, Bussolino, G, Chance, A, Chen, M, Chiadroni, E, Cianchi, A, Clarke, JA, Cole, J, Couprie, ME, Croia, M, Cros, B, Crump, PA, Dattoli, G, Del Dotto, A, Delerue, N, De Nicola, S, Dias, JM, Dorda, U, Fedele, R, Pousa, A Ferran, Ferrario, M, Filippi, F, Fiore, G, Fonseca, RA, Galimberti, M, Gallo, A, Ghaith, A, Giove, D, Giribono, A, Gizzi, LA, Gruener, FJ, Habib, AF, Haefner, C, Heinemann, T, Hidding, B, Holzer, BJ, Hooker, SM, Hosokai, T, Huebner, M, Irman, A, Jafarinia, FJ, Jaroszynski, DA, Joshi, C, Kaluza, M, Kando, M, Karger, OS, Karsch, S, Khazanov, E, Khikhlukha, D, Knetsch, A, Kocon, D, Koester, P, Kononenko, OS, Korn, G, Kostyukov, I, Kruchinin, KO, Labate, L, Le Blanc, C, Lechner, C, Leemans, W, Lehrach, A, Li, X, Libov, V, Lifschitz, A, Litvinenko, V, Lu, W, Lundh, O, Maier, AR, Malka, V, Manahan, GG, Mangles, SPD, Marchetti, B, de la Ossa, A Martinez, Martins, JL, Mason, PD, Massimo, F, Mathieu, F, Maynard, G, Mazzotta, Z, Molodozhentsev, AY, Mostacci, A, Mueller, A-S, Murphy, CD, Najmudin, Z, Nghiem, PAP, Nguyen, F, Niknejadi, P, Osterhoff, J, Espinos, D Oumbarek, Papadopoulos, DN, Patrizi, B, Petrillo, V, Pocsai, MA, Poder, K, Pompili, R, Pribyl, L, Pugacheva, D, Rajeev, PP, Romeo, S, Conti, M Rossetti, Rossi, AR, Rossmanith, R, Roussel, E, Sahai, AA, Sarri, G, Schaper, L, Scherkl, P, Schramm, U, Schroeder, CB, Scifo, J, Serafini, L, Sheng, ZM, Siders, C, Silva, LO, Silva, T, Simon, C, Sinha, U, Specka, A, Streeter, MJV, Svystun, EN, Symes, D, Szwaj, C, Tauscher, GE, Terzani, D, Thompson, N, Toci, G, Tomassini, P, Torres, R, Ullmann, D, Vaccarezza, C, Vannini, M, Vieira, JM, Villa, F, Wahlstrom, C-G, Walczak, R, Walker, PA, Wang, K, Welsch, CP, Wiggins, SM, Wolfenden, J, Xia, G, Yabashi, M, Zhu, J, Zigler, A, IOP, Synchrotron SOLEIL (SSOLEIL), Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique des gaz et des plasmas (LPGP), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire pour l'utilisation des lasers intenses (LULI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 (PhLAM), Université de Lille-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'optique appliquée (LOA), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-École Nationale Supérieure de Techniques Avancées (ENSTA Paris), École polytechnique (X), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Weikum, M. K., Akhter, T., Alesini, D., Alexandrova, A. S., Anania, M. P., Andreev, N. E., Andriyash, I. A., Aschikhin, A., Assmann, R. W., Audet, T., Bacci, A., Barna, I. F., Beaton, A., Beck, A., Beluze, A., Bernhard, A., Bielawski, S., Bisesto, F. G., Brandi, F., Brinkmann, R., Bruendermann, E., Buscher, M., Bussmann, M. H., Bussolino, G., Chance, A., Chen, M., Chiadroni, E., Cianchi, A., Clarke, J. A., Cole, J., Couprie, M. E., Croia, M., Cros, B., Crump, P. A., Dattoli, G., Del Dotto, A., Delerue, N., De Nicola, S., Dias, J. M., Dorda, U., Fedele, R., Ferran Pousa, A., Ferrario, M., Filippi, F., Fiore, G., Fonseca, R. A., Galimberti, M., Gallo, A., Ghaith, A., Giove, D., Giribono, A., Gizzi, L. A., Gruner, F. J., Habib, A. F., Haefner, C., Heinemann, T., Hidding, B., Holzer, B. J., Hooker, S. M., Hosokai, T., Huebner, M., Irman, A., Jafarinia, F. J., Jaroszynski, D. A., Joshi, C., Kaluza, M., Kando, M., Karger, O. S., Karsch, S., Khazanov, E., Khikhlukha, D., Knetsch, A., Kocon, D., Koester, P., Kononenko, O. S., Korn, G., Kostyukov, I., Kruchinin, K. O., Labate, L., Blanc, C. L., Lechner, C., Leemans, W., Lehrach, A., Li, X., Libov, V., Lifschitz, A., Litvinenko, V., Lu, W., Lundh, O., Maier, A. R., Malka, V., Manahan, G. G., Mangles, S. P. D., Marchetti, B., Martinez De La Ossa, A., Martins, J. L., Mason, P. D., Massimo, F., Mathieu, F., Maynard, G., Mazzotta, Z., Molodozhentsev, A. Y., Mostacci, A., Mueller, A. -S., Murphy, C. D., Najmudin, Z., Nghiem, P. A. P., Nguyen, F., Niknejadi, P., Osterhoff, J., Oumbarek Espinos, D., Papadopoulos, D. N., Patrizi, B., Petrillo, V., Pocsai, M. A., Poder, K., Pompili, R., Pribyl, L., Pugacheva, D., Rajeev, P. P., Romeo, S., Rossetti Conti, M., Rossi, A. R., Rossmanith, R., Roussel, E., Sahai, A. A., Sarri, G., Schaper, L., Scherkl, P., Schramm, U., Schroeder, C. B., Scifo, J., Serafini, L., Sheng, Z. M., Siders, C., Silva, L. O., Silva, T., Simon, C., Sinha, U., Specka, A., Streeter, M. J. V., Svystun, E. N., Symes, D., Szwaj, C., Tauscher, G. E., Terzani, D., Thompson, N., Toci, G., Tomassini, P., Torres, R., Ullmann, D., Vaccarezza, C., Vannini, M., Vieira, J. M., Villa, F., Wahlstrom, C. -G., Walczak, R., Walker, P. A., Wang, K., Welsch, C. P., Wiggins, S. M., Wolfenden, J., Xia, G., Yabashi, M., Zhu, J., Zigler, A., Weikum, M K, Akhter, T, Alesini, D, Alexandrova, A S, Anania, M P, Andreev, N E, Andriyash, I A, Aschikhin, A, Assmann, R W, Audet, T, Bacci, A, Barna, I F, Beaton, A, Beck, A, Beluze, A, Bernhard, A, Bielawski, S, Bisesto, F G, Brandi, F, Brinkmann, R, Bruendermann, E, Büscher, M, Bussmann, M H, Bussolino, G, Chance, A, Chen, M, Chiadroni, E, Cianchi, A, Clarke, J A, Cole, J, Couprie, M E, Croia, M, Cros, B, Crump, P A, Dattoli, G, Del Dotto, A, Delerue, N, De Nicola, S, Dias, J M, Dorda, U, Fedele, R, Ferran Pousa, A, Ferrario, M, Filippi, F, Fiore, G, Fonseca, R A, Galimberti, M, Gallo, A, Ghaith, A, Giove, D, Giribono, A, Gizzi, L A, Grüner, F J, Habib, A F, Haefner, C, Heinemann, T, Hidding, B, Holzer, B J, Hooker, S M, Hosokai, T, Huebner, M, Irman, A, Jafarinia, F J, Jaroszynski, D A, Joshi, C, Kaluza, M, Kando, M, Karger, O S, Karsch, S, Khazanov, E, Khikhlukha, D, Knetsch, A, Kocon, D, Koester, P, Kononenko, O S, Korn, G, Kostyukov, I, Kruchinin, K O, Labate, L, Blanc, C Le, Lechner, C, Leemans, W, Lehrach, A, Li, X, Libov, V, Lifschitz, A, Litvinenko, V, Lu, W, Lundh, O, Maier, A R, Malka, V, Manahan, G G, Mangles, S P D, Marchetti, B, Martinez de la Ossa, A, Martins, J L, Mason, P D, Massimo, F, Mathieu, F, Maynard, G, Mazzotta, Z, Molodozhentsev, A Y, Mostacci, A, Mueller, A - S, Murphy, C D, Najmudin, Z, Nghiem, P A P, Nguyen, F, Niknejadi, P, Osterhoff, J, Oumbarek Espinos, D, Papadopoulos, D N, Patrizi, B, Petrillo, V, Pocsai, M A, Poder, K, Pompili, R, Pribyl, L, Pugacheva, D, Rajeev, P P, Romeo, S, Rossetti Conti, M, Rossi, A R, Rossmanith, R, Roussel, E, Sahai, A A, Sarri, G, Schaper, L, Scherkl, P, Schramm, U, Schroeder, C B, Scifo, J, Serafini, L, Sheng, Z M, Siders, C, Silva, L O, Silva, T, Simon, C, Sinha, U, Specka, A, Streeter, M J V, Svystun, E N, Symes, D, Szwaj, C, Tauscher, G E, Terzani, Davide, Thompson, N, Toci, G, Tomassini, P, Torres, R, Ullmann, D, Vaccarezza, C, Vannini, M, Vieira, J M, Villa, F, Wahlstrom, C - G, Walczak, R, Walker, P A, Wang, K, Welsch, C P, Wiggins, S M, Wolfenden, J, Xia, G, Yabashi, M, Zhu, J, and Zigler, A
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electron ,History ,[PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph] ,Physics and Astronomy(all) ,01 natural sciences ,7. Clean energy ,Plasmas, accelerators ,010305 fluids & plasmas ,Education ,Accelerator Physics ,Acceleration ,accelerators ,Conceptual design ,0103 physical sciences ,site ,ddc:530 ,010306 general physics ,plasma ,QC ,Open innovation ,Focus (computing) ,Detector ,acceleration ,Plasma acceleration ,Accelerators and Storage Rings ,Computer Science Applications ,laser ,MC3: Novel Particle Sources and Acceleration Techniques ,Plasmas ,Systems engineering ,Physics::Accelerator Physics ,Plasmas (physics) | Lasers | Laser wakefield - Abstract
The Horizon 2020 Project EuPRAXIA (European Plasma Research Accelerator with eXcellence In Applications) is producing a conceptual design report for a highly compact and cost-effective European facility with multi-GeV electron beams accelerated using plasmas. EuPRAXIA will be set up as a distributed Open Innovation platform with two construction sites, one with a focus on beam-driven plasma acceleration (PWFA) and another site with a focus on laser-driven plasma acceleration (LWFA). User areas at both sites will provide access to FEL pilot experiments, positron generation and acceleration, compact radiation sources, and test beams for HEP detector development. Support centres in four different countries will complement the pan-European implementation of this infrastructure., Proceedings of the 10th Int. Particle Accelerator Conf., IPAC2019, Melbourne, Australia
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- 2019
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13. Experimental Observation of Proton Bunch Modulation in a Plasma at Varying Plasma Densities
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Adli, E, Ahuja, A, Apsimon, O, Apsimon, R, Bachmann, A-M, Barrientos, D, Barros, MM, Batkiewicz, J, Batsch, F, Bauche, J, Olsen, VK Berglyd, Bernardini, M, Biskup, B, Boccardi, A, Bogey, T, Bohl, T, Bracco, C, Braunmueller, F, Burger, S, Burt, G, Bustamante, S, Buttenschoen, B, Caldwell, A, Cascella, M, Chappell, J, Chevallay, E, Chung, M, Cooke, D, Damerau, H, Deacon, L, Deubner, LH, Dexter, A, Doebert, S, Farmer, J, Fedosseev, VN, Fior, G, Fiorito, R, Fonseca, RA, Friebel, F, Garolfi, L, Gessner, S, Gorgisyan, I, Gorn, AA, Granados, E, Grulke, O, Gschwendtner, E, Guerrero, A, Hansen, J, Helm, A, Henderson, JR, Hessler, C, Hofle, W, Huether, M, Ibison, M, Jensen, L, Jolly, S, Keeble, F, Kim, S-Y, Kraus, F, Lefevre, T, LeGodec, G, Li, Y, Liu, S, Lopes, N, Lotov, KV, Brun, L Maricalva, Martyanov, M, Mazzoni, S, Godoy, D Medina, Minakov, VA, Mitchell, J, Molendijk, JC, Mompo, R, Moody, JT, Moreira, M, Muggli, P, Mutin, C, Oez, E, Ozturk, E, Pasquino, C, Pardons, A, Asmus, F Pena, Pepitone, K, Perera, A, Petrenko, A, Pitman, S, Plyushchev, G, Pukhov, A, Rey, S, Rieger, K, Ruhl, H, Schmidt, JS, Shalimova, IA, Shaposhnikova, E, Sherwood, P, Silva, LO, Soby, L, Sosedkin, AP, Speroni, R, Spitsyn, RI, Tuev, PV, Turner, M, Velotti, F, Verra, L, Verzilov, VA, Vieira, J, Vincke, H, Welsch, CP, Williamson, B, Wing, M, Woolley, B, Xia, G, and Collaboration, AWAKE
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Accelerator Physics (physics.acc-ph) ,Proton ,Other Fields of Physics ,General Physics and Astronomy ,FOS: Physical sciences ,Plasma oscillation ,Ciências Naturais::Ciências Físicas [Domínio/Área Científica] ,01 natural sciences ,law.invention ,law ,Physics::Plasma Physics ,Ionization ,physics.plasm-ph ,0103 physical sciences ,010306 general physics ,physics.acc-ph ,Physics ,Plasma ,Laser ,Accelerators and Storage Rings ,Physics - Plasma Physics ,Pulse (physics) ,ddc ,Plasma Physics (physics.plasm-ph) ,Modulation ,Physics::Space Physics ,Physics::Accelerator Physics ,Physics - Accelerator Physics ,Atomic physics ,Frequency modulation - Abstract
We give direct experimental evidence for the observation of the full transverse self-modulation of a relativistic proton bunch propagating through a dense plasma. The bunch exits the plasma with a density modulation resulting from radial wakefield effects with a period reciprocal to the plasma frequency. We show that the modulation is seeded by using an intense laser pulse co-propagating with the proton bunch which creates a relativistic ionization front within the bunch. We show by varying the plasma density over one order of magnitude that the modulation period scales with the expected dependence on the plasma density., Comment: 4 figures, AWAKE collaboration paper, Submitted to PRL
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- 2018
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14. Snowmass 2013 Computing Frontier: Accelerator Science
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Spentzouris, P, Cormier-Michel, E, Joshi, C, Amundson, J, An, W, Bruhwiler, DL, Cary, JR, Cowan, B, Decyk, VK, Esarey, E, Fonseca, RA, Friedman, A, Geddes, CGR, Grote, DP, Kourbanis, I, Leemans, WP, Lu, W, Mori, WB, Ng, C, Qiang, J, Roberts, T, Ryne, RD, Schroeder, CB, Silva, LO, Tsung, FS, Vay, J-L, Vieira, J, Spentzouris, P, Cormier-Michel, E, Joshi, C, Amundson, J, An, W, Bruhwiler, DL, Cary, JR, Cowan, B, Decyk, VK, Esarey, E, Fonseca, RA, Friedman, A, Geddes, CGR, Grote, DP, Kourbanis, I, Leemans, WP, Lu, W, Mori, WB, Ng, C, Qiang, J, Roberts, T, Ryne, RD, Schroeder, CB, Silva, LO, Tsung, FS, Vay, J-L, and Vieira, J
- Abstract
This is the working summary of the Accelerator Science working group of the Computing Frontier of the Snowmass meeting 2013. It summarizes the computing requirements to support accelerator technology in both Energy and Intensity Frontiers.
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- 2017
15. Application of Machine Learning in Modeling the Relationship between Catchment Attributes and Instream Water Quality in Data-Scarce Regions
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Miljan Kovačević, Bahman Jabbarian Amiri, Silva Lozančić, Marijana Hadzima-Nyarko, Dorin Radu, and Emmanuel Karlo Nyarko
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machine learning ,water quality ,land use ,land cover ,hydrologic soil groups ,geological permeability ,Chemical technology ,TP1-1185 - Abstract
This research delves into the efficacy of machine learning models in predicting water quality parameters within a catchment area, focusing on unraveling the significance of individual input variables. In order to manage water quality, it is necessary to determine the relationship between the physical attributes of the catchment, such as geological permeability and hydrologic soil groups, and in-stream water quality parameters. Water quality data were acquired from the Iran Water Resource Management Company (WRMC) through monthly sampling. For statistical analysis, the study utilized 5-year means (1998–2002) of water quality data. A total of 88 final stations were included in the analysis. Using machine learning methods, the paper gives relations for 11 in-stream water quality parameters: Sodium Adsorption Ratio (SAR), Na+, Mg2+, Ca2+, SO42−, Cl−, HCO3−, K+, pH, conductivity (EC), and Total Dissolved Solids (TDS). To comprehensively evaluate model performance, the study employs diverse metrics, including Pearson’s Linear Correlation Coefficient (R) and the mean absolute percentage error (MAPE). Notably, the Random Forest (RF) model emerges as the standout model across various water parameters. Integrating research outcomes enables targeted strategies for fostering environmental sustainability, contributing to the broader goal of cultivating resilient water ecosystems. As a practical pathway toward achieving a delicate balance between human activities and environmental preservation, this research actively contributes to sustainable water ecosystems.
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- 2023
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16. Application of Artificial Intelligence Methods for Predicting the Compressive Strength of Green Concretes with Rice Husk Ash
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Miljan Kovačević, Marijana Hadzima-Nyarko, Ivanka Netinger Grubeša, Dorin Radu, and Silva Lozančić
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machine learning ,compressive strength ,concrete ,rice husk ash ,Mathematics ,QA1-939 - Abstract
To promote sustainable growth and minimize the greenhouse effect, rice husk fly ash can be used instead of a certain amount of cement. The research models the effects of using rice fly ash as a substitute for regular Portland cement on the compressive strength of concrete. In this study, different machine-learning techniques are investigated and a procedure to determine the optimal model is provided. A database of 909 analyzed samples forms the basis for creating forecast models. The derived models are assessed using the accuracy criteria RMSE, MAE, MAPE, and R. The research shows that artificial intelligence techniques can be used to model the compressive strength of concrete with acceptable accuracy. It is also possible to evaluate the importance of specific input variables and their influence on the strength of such concrete.
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- 2023
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17. Ipsilesional volume loss of basal ganglia and thalamus is associated with poor hand function after ischemic perinatal stroke
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Nigul Ilves, Silva Lõo, Norman Ilves, Rael Laugesaar, Dagmar Loorits, Pille Kool, Tiina Talvik, and Pilvi Ilves
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Perinatal stroke ,Basal ganglia ,Thalamus ,MRI ,Volumetrics ,Motor outcome ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Abstract Background Perinatal stroke (PS) is the leading cause of hemiparetic cerebral palsy (CP). Involvement of the corticospinal tract on neonatal magnetic resonance imaging (MRI) is predictive of motor outcome in patients with hemiparetic CP. However, early MRI is not available in patients with delayed presentation of PS and prediction of hemiparesis severity remains a challenge. Aims To evaluate the volumes of the basal ganglia, amygdala, thalamus, and hippocampus following perinatal ischemic stroke in relation to hand motor function in children with a history of PS and to compare the volumes of subcortical structures in children with PS and in healthy controls. Methods Term born PS children with arterial ischemic stroke (AIS) (n = 16) and with periventricular venous infarction (PVI) (n = 18) were recruited from the Estonian Pediatric Stroke Database. MRI was accuired during childhood (4-18 years) and the volumes of the basal ganglia, thalamus, amygdala and hippocampus were calculated. The results of stroke patients were compared to the results of 42 age- and sex-matched healthy controls. Affected hand function was evaluated by Assisting Hand Assessment (AHA) and classified by the Manual Ability Classification System (MACS). Results Compared to the control group, children with AIS had smaller volumes of the ipsi- and contralesional thalami, ipsilesional globus pallidus, nucleus accumbens and hippocampus (p 0.5; p 0.55; p
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- 2022
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18. Self-consistent PIC modeling of pair production with intense lasers pulses
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Grismayer T, Ricardo Fonseca, Marklund, M., and Silva, Lo
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- 2013
19. Predictive Factors for Target Organ Injuries in Hypertensive Individuals
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Paz Landim M, Cosenso-Martin LN, Polegati Santos A, Roma Uyemura JR, Barufi Fernandes L, Silva Lopes VD, Yugar-Toledo JC, and Vilela-Martin JF
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arterial hypertension ,ambulatory blood pressure monitoring ,left ventricular hypertrophy ,albuminuria ,stroke ,coronary artery disease ,Internal medicine ,RC31-1245 - Abstract
Manoel Paz Landim, Luciana Neves Cosenso-Martin, Aleandra Polegati Santos, Jessica Rodrigues Roma Uyemura, Leticia Barufi Fernandes, Valquiria da Silva Lopes, Juan Carlos Yugar-Toledo, Jose Fernando Vilela-Martin Internal Medicine Department, State Medical School at Sao Jose do Rio Preto (FAMERP), Sao Jose do Rio Preto, Sao Paulo, BrazilCorrespondence: Jose Fernando Vilela-MartinInternal Medicine Department, State Medical School at Sao Jose do Rio Preto (FAMERP), Ave Brig Faria Lima 5416, Vila Sao Pedro, Sao Jose do Rio Preto, 15090-000, Sao Paulo, BrazilEmail vilelamartin@uol.com.brBackground: The causal relationship between systemic arterial hypertension and target organ damage (TOD) is well known, as well as the association with cardiovascular risk factors (CV). Ambulatory blood pressure monitoring (ABPM) is important in monitoring hypertension and assessing the risk of TOD.Objective: To evaluate the relationship between blood pressure (BP) and clinical and biochemical parameters in the development of TOD in hypertensive patients.Methods: This was a retrospective cohort study with 162 hypertensive patients followed for an average period of 13 years. The TOD investigated were left ventricular hypertrophy (LVH), microalbuminuria, coronary artery disease (CAD) and stroke. Blood pressure was assessed by ABPM and LVH using echocardiogram and electrocardiogram, respectively. Biochemical-metabolic tests and 24-hour microalbuminuria were performed at baseline and follow-up. The P-value < 0.05 was considered significant.Results: The average age was 69± 11.8 years, with a predominance of women (64.8%), white ethnicity (79.6%) and diabetics (78.4%). ABPM showed a significant reduction in BP values during follow-up, although without association with TOD (microalbuminuria, stroke, and CAD), except for LVH that showed a correlation with sleep BP ≥ 120/70 mmHg (P=0.044). The most frequent TODs were LVH (29.6%), microalbuminuria (26.5%), CAD (19.8%) and stroke (17.3%). In the follow-up, there was an association between LVH and diabetes; microalbuminuria was associated with diabetes and triglycerides; stroke was associated with HDL-cholesterol (HDL-c), microalbuminuria and carotid disease. CAD showed a relationship with age and HDL-c.Conclusion: Predictive factors for TOD are age, microalbuminuria, diabetes, HDL-c, triglycerides and carotid disease. Nocturnal BP is correlated with LVH. The absence of a relationship between ABPM and other TODs can be explained by the use of effective drugs, improvement of metabolic and blood pressure parameters.Keywords: arterial hypertension, ambulatory blood pressure monitoring, left ventricular hypertrophy, albuminuria, stroke, coronary artery disease
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- 2021
20. Procedimiento para el reconocimiento de las partidas medioambientales en la información financiera de la UEB Fábrica de Piensos Cienfuegos, Cuba
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Silva López, Celia Alicia and Castillo Padrón, Yoania
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incidencias medioambientales ,información financiera ,gestión medioambiental. ,Special aspects of education ,LC8-6691 ,Social sciences (General) ,H1-99 - Abstract
La empresa cubana, involucrada en un proceso de perfeccionamiento de su gestión, urgida de una inserción exitosa en los mercados foráneos, muestra hoy en día un creciente interés por mejorar su desempeño ambiental, dar a conocer sus logros y obtener a corto plazo un reconocimiento de su positivo accionar con relación al entorno que la rodea. Es por ello que el Ministerio de la Agricultura en cumplimiento de lo establecido en la Estrategia Ambiental en Cuba, se vincula con los profesionales universitarios, quienes lo proveen de herramientas que le permitan adoptar acciones a favor de mitigar el cambio climático. La investigación que se presenta tiene como objetivo general proponer un procedimiento para el reconocimiento de las partidas medioambientales en la información financiera de la U.E.B Fábrica de Piensos Cienfuegos, en correspondencia con la legislación vigente. Para su desarrollo se utilizaron diferentes métodos y técnicas, tales como: histórico-lógico, descriptivo, de análisis, síntesis y otros propios de la ciencia, lo cual permitió relacionar, comparar y arribar a resultados y conclusiones relacionados con elementos ambientales en las Notas a los Estados Financieros, como indica la Norma Especifica de Contabilidad No.11“Contabilidad Medioambiental”. Los resultados de la validación por el método de especialista, demuestran la validez, viabilidad y aplicabilidad del procedimiento, al constituir un referente facilitador, que permite identificar los recursos financieros y materiales de los que se dispone para la adopción de acciones medioambientales
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- 2021
21. Chapter10
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Tarrés, María Luisa, Montes de Oca Barrera, Laura Beatriz, and Silva Londoño, Diana Alejandra
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- 2014
22. BackOther01
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Tarrés, María Luisa, Montes de Oca Barrera, Laura Beatriz, and Silva Londoño, Diana Alejandra
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- 2014
23. Part04
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Tarrés, María Luisa, Montes de Oca Barrera, Laura Beatriz, and Silva Londoño, Diana Alejandra
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- 2014
24. Introduction
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Tarrés, María Luisa, Montes de Oca Barrera, Laura Beatriz, and Silva Londoño, Diana Alejandra
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- 2014
25. FrontOther3
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Tarrés, María Luisa, Montes de Oca Barrera, Laura Beatriz, and Silva Londoño, Diana Alejandra
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- 2014
26. TitlePage
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Tarrés, María Luisa, Montes de Oca Barrera, Laura Beatriz, and Silva Londoño, Diana Alejandra
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- 2014
27. HalfTitle
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Tarrés, María Luisa, Montes de Oca Barrera, Laura Beatriz, and Silva Londoño, Diana Alejandra
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- 2014
28. Green Apple Heart Failure
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Da Silva, LO, primary, Fabre, J, additional, Monfort, A, additional, Villeret, J, additional, Citony, I, additional, Philippe, CT, additional, Mehdi, L, additional, Didier, M, additional, Molinié, V, additional, and Inamo, J, additional
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- 2014
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29. Genome-wide survey of SNP variation uncovers the genetic structure of cattle breeds.
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Bovine Hap Map, Consortium, Gibbs, Ra, Taylor, Jf, Van Tassel, Cp, Barendse, W, Eversole, Ka, Gill, Ca, Green, Rd, Hamernik, Dl, Kappes, Sm, Lien, S, Matukumalli, Lk, Mcevan, Jc, Mazareth, Lv, Schnabel, Rd, Weinstock, Gm, Wheeler, Da, Ajmone Marsan, Paolo, Boettcher, Pj, Caetano, Ar, Garcia, Jf, Hanotte, O, Mariani, P, Skow, Lc, Sonstegard, T, Williams, Jl, Diallo, B, Hailemariam, L, Martinez, Ml, Morris, Ca, Silva, Lo, Spelman, Rj, Malatu, W, Zhao, K, Abbey, Ca, Agaba, M, Araujo, Fr, Bunch, Rj, Burton, J, Gorni, C, Olivier, H, Harrison, Be, Luff, B, Machado, Ma, Mwakaya, J, Plastow, G, Sim, W, Smith, T, Thomas, Mb, Valentini, A, Williams, P, Womack, J, Wolliams, Ja, Liu, Y, Qin, X, Worley, Kc, Gao, C, Jiang, H, Moore, S, Ren, Y, Song, Xz, Bustamante, Cd, Hernandez, Rd, Muzny, Dm, Patil, S, San Lucas, A, Fu, Q, Kent, Mp, Vega, R, Matukumalli, A, Mcwilliam, S, Sclep, G, Bryc, K, Choi, J, Gao, H, Grefenstette, Jj, Murdoch, B, Stella, A, Villa Angulo, R, Wright, M, Aerts, J, Jann, O, Negrini, Riccardo, Goddard, Me, Hayes, Bj, Bradley, Dg, Lau, Lp, Liu, Ge, Lynn, Dj, Panzitta, F, Dodds, Kg, Ajmone Marsan, Paolo (ORCID:0000-0003-3165-4579), Negrini, Riccardo (ORCID:0000-0002-8735-0286), Bovine Hap Map, Consortium, Gibbs, Ra, Taylor, Jf, Van Tassel, Cp, Barendse, W, Eversole, Ka, Gill, Ca, Green, Rd, Hamernik, Dl, Kappes, Sm, Lien, S, Matukumalli, Lk, Mcevan, Jc, Mazareth, Lv, Schnabel, Rd, Weinstock, Gm, Wheeler, Da, Ajmone Marsan, Paolo, Boettcher, Pj, Caetano, Ar, Garcia, Jf, Hanotte, O, Mariani, P, Skow, Lc, Sonstegard, T, Williams, Jl, Diallo, B, Hailemariam, L, Martinez, Ml, Morris, Ca, Silva, Lo, Spelman, Rj, Malatu, W, Zhao, K, Abbey, Ca, Agaba, M, Araujo, Fr, Bunch, Rj, Burton, J, Gorni, C, Olivier, H, Harrison, Be, Luff, B, Machado, Ma, Mwakaya, J, Plastow, G, Sim, W, Smith, T, Thomas, Mb, Valentini, A, Williams, P, Womack, J, Wolliams, Ja, Liu, Y, Qin, X, Worley, Kc, Gao, C, Jiang, H, Moore, S, Ren, Y, Song, Xz, Bustamante, Cd, Hernandez, Rd, Muzny, Dm, Patil, S, San Lucas, A, Fu, Q, Kent, Mp, Vega, R, Matukumalli, A, Mcwilliam, S, Sclep, G, Bryc, K, Choi, J, Gao, H, Grefenstette, Jj, Murdoch, B, Stella, A, Villa Angulo, R, Wright, M, Aerts, J, Jann, O, Negrini, Riccardo, Goddard, Me, Hayes, Bj, Bradley, Dg, Lau, Lp, Liu, Ge, Lynn, Dj, Panzitta, F, Dodds, Kg, Ajmone Marsan, Paolo (ORCID:0000-0003-3165-4579), and Negrini, Riccardo (ORCID:0000-0002-8735-0286)
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- 2009
30. The genus Dasineura Rondani, 1840 (Diptera, Cecidomyiidae) in Brazil
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Maia, VC, primary and Silva, LO, additional
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- 2013
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31. Covariant formulation of photon acceleration
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Mendonca, JT Hizanidis, K Frantzeskakis, DJ Silva, LO and Vomvoridis, JL
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Physics::Plasma Physics ,Astrophysics::High Energy Astrophysical Phenomena ,Physics::Space Physics ,Physics::Accelerator Physics - Abstract
We present, a covariant theory of photon acceleration in time-varying plasmas. This is a ray-tracing model for frequency upshift of waves interacting with relativistic plasma perturbations, such as ionization fronts and plasma wakefields. This theory explores the formal analog; between a photon in a plasma and a relativistic particle with a finite rest mass. The covariant ray-tracing theory is applied to the case of photon acceleration by a modulated wakefield. Threshold criteria for transition to chaos are derived.
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- 1997
32. Robustness of raman plasma amplifiers and their potential for attosecond pulse generation
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Sadler, JD, Sliwa, M, Miller, T, Kasim, MF, Ratan, N, Ceurvorst, L, Savin, A, Aboushelbaya, R, Norreys, P, Haberberger, D, Davies, AS, Bucht, S, Froula, DH, Vieira, J, Fonseca, RA, Silva, LO, Bingham, R, Glize, K, and Trines, R
- Abstract
Raman back-scatter from an under-dense plasma can be used to compress laser pulses, as shown by several previous experiments in the optical regime. A short seed pulse counter-propagates with a longer pump pulse and energy is transferred to the shorter pulse via stimulated Raman scattering. The robustness of the scheme to non-ideal plasma density conditions is demonstrated through particle-in-cell simulations. The scale invariance of the scheme ensures that compression of XUV pulses from a free electron laser is also possible, as demonstrated by further simulations. The output is as short as 300 as, with energy typical of fourth generation sources.
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33. Resting-State Functional Connectivity and Cognitive Impairment in Children with Perinatal Stroke
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Nigul Ilves, Pilvi Ilves, Rael Laugesaar, Julius Juurmaa, Mairi Männamaa, Silva Lõo, Dagmar Loorits, Tiiu Tomberg, Anneli Kolk, Inga Talvik, and Tiina Talvik
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Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 - Abstract
Perinatal stroke is a leading cause of congenital hemiparesis and neurocognitive deficits in children. Dysfunctions in the large-scale resting-state functional networks may underlie cognitive and behavioral disability in these children. We studied resting-state functional connectivity in patients with perinatal stroke collected from the Estonian Pediatric Stroke Database. Neurodevelopment of children was assessed by the Pediatric Stroke Outcome Measurement and the Kaufman Assessment Battery. The study included 36 children (age range 7.6–17.9 years): 10 with periventricular venous infarction (PVI), 7 with arterial ischemic stroke (AIS), and 19 controls. There were no differences in severity of hemiparesis between the PVI and AIS groups. A significant increase in default mode network connectivity (FDR 0.1) and lower cognitive functions (p
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- 2016
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34. Enteropatógenos associados com diarréia infantil (< 5 anos de idade) em amostra da população da área metropolitana de Criciúma, Santa Catarina, Brasil
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Schnack Felice Jaqueline, Fontana Lidiani de Medeiros, Barbosa Paulo Roberto, Silva Loraine Storch Meyer da, Baillargeon Clair Maria Martinello, Barichello Tatiana, Póvoa Marinete Marins, Cavasini Carlos Eugênio, and Machado Ricardo Luiz Dantas
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Diarréia ,Parasitos ,Enteropatias ,Saúde Infantil ,Medicine ,Public aspects of medicine ,RA1-1270 - Abstract
Foi investigada a presença de enteropatógenos em 94 casos de diarréia e 45 casos-controle em crianças de 0 a 5 anos de idade, atendidas no Centro de Saúde Municipal de Criciúma, Santa Catarina. Entre os parasitos isolados, o Cryptosporidium (85,1%) foi o mais freqüente, seguido pela Entamoeba histolytica (56,4%) e a Giardia lamblia (4,3%). Quatro amostras apresentaram Escherichia coli enteropatogênica (4,3%). A Samonella e a Shiguella não foram detectadas em nenhuma amostra. Somente um caso foi positivo para o rotavírus (1,1%).
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- 2003
35. Prevalência e determinantes de anemia em crianças de Porto Alegre, RS, Brasil
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Silva Loraine Storch Meyer da, Giuglian Elsa Regina Justo, and Aerts Denise Rangel Ganzo de Castro
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Anemia/epidemiologia ,Anemia ferropriva/epidemiologia ,Fatores de risco ,Creches ,Anemias nutricionais ,Estudos transversais ,Fatores etários ,Fatores socioeconômicos ,Aleitamento materno ,Nutrição infantil ,Peso ao nascer ,Peso-idade ,Peso-estatura ,Public aspects of medicine ,RA1-1270 - Abstract
OBJETIVO: O estudo foi realizado com o objetivo de verificar a prevalência de anemia e seus possíveis determinantes em crianças de 0 a 36 meses de idade que freqüentam escolas municipais infantis. MÉTODOS: Realizou-se um estudo transversal pelo qual foram estudadas 557 crianças de 0 a 36 meses de idade de todas as escolas municipais infantis de Porto Alegre, RS. Foi feita antropometria e dosagem de hemoglobina pelo fotômetro portátil HemoCue, considerando-se anemia níveis inferiores a 11 g/dl. As informações sobre as crianças foram obtidas por questionário aplicado às mães. A associação das variáveis estudadas com a anemia foi analisada pela técnica de regressão log-binomial aplicada ao modelo hierárquico. RESULTADOS: Encontrou-se uma prevalência de anemia de 47,8% entre toda a população estudada, cujos determinantes foram: famílias com renda per capita igual ou inferior a um salário-mínimo (razão de prevalência [RP] = 1,6), faixa etária de 12 a 23 meses (RP=1,4) e presença de dois ou mais irmãos com menos de cinco anos (RP=1,4). CONCLUSÕES: A prevalência de anemia na população estudada é bastante elevada, especialmente nas crianças de nível socioeconômico mais baixo, na faixa etária de 12 a 23 meses, e nas crianças com dois ou mais irmãos com menos de cinco anos, indicando a necessidade urgente de medidas efetivas visando o seu combate e a sua prevenção.
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- 2001
36. A Tecitura do Silêncio na Narrativa de Grace Paley
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Suely Maria Paula and Silva Lobo
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Language and Literature - Abstract
Este trabalho procura demonstrar a maneira como a escrita de Grace Paley, autora americana contemporânea, joga com o silêncio e o não-dito para denunciar e desconstruir falsos valores sobre os quais se estruturam determinados construtos sociais.
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- 1997
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37. Opinião de mulheres sobre a legalização do aborto em município de porte médio no Sul do Brasil
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César Juraci A., Gomes Gildo, Horta Bernardo L., Oliveira Aline K. de, Saraiva Alessandra K. de O., Pardo Dagmar O., Silva Loimar M., Rodghiero Cristina L., and Gross Márcia Regina
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Aborto ,Conhecimentos/atitudes e prática ,Saúde da mulher ,Public aspects of medicine ,RA1-1270 - Abstract
INTRODUÇÃO: O aborto provocado é o principal determinante da mortalidade materna no Brasil. Isto tem provocado diversas discussões quanto à possibilidade de legalizá-lo. MATERIAL E MÉTODO: Através de delineamento transversal e de amostragem sistemática por conglomerados foram aplicados questionários individualizados a todas as mulheres com idade entre 15 e 49 anos, residentes no Município de Rio Grande, RS. RESULTADOS: Dentre as 1.456 mulheres entrevistadas, 30% mostraram-se favoráveis à legalização do aborto em qualquer situação; o percentual de mulheres favoráveis esteve diretamente associado à idade, escolaridade, renda familiar e ocorrência prévia de aborto provocado (p
- Published
- 1997
38. Endosperm and whole grain rye breads are characterized by low post-prandial insulin response and a beneficial blood glucose profile
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Östman Elin M, Holm Cecilia, Andersson Ulrika K, Silva Lorena, Rosén Liza AH, and Björck Inger ME
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Nutrition. Foods and food supply ,TX341-641 ,Nutritional diseases. Deficiency diseases ,RC620-627 - Abstract
Abstract Background Rye products have previously been shown to induce comparatively low post-prandial insulin responses; irrespectively of their glycaemic indices (GI). However, the mechanism behind this lowered insulin demand remains unknown. An improved insulin economy might contribute to the benefits seen in epidemiological studies with whole grain diets on metabolic risk factors and weight regulation. The objective of this study was to explore the mechanism for a reduced post-prandial insulin demand with rye products. Methods 12 healthy subjects were given flour based rye products made from endosperm, whole grain or bran, produced with different methods (baking, simulated sour-dough baking and boiling) as breakfasts in random order in a cross-over design. White wheat bread (WWB) was used as a reference. Blood glucose, serum insulin, plasma ghrelin and subjective satiety were measured during 180 minutes. To evaluate the course of post-meal glycaemia, a measure of the glycaemic profile (GP) was introduced defined as the duration for the incremental post-prandial blood glucose response divided with the blood glucose incremental peak (min/mM). Results The study shows that whole grain rye breads and endosperm rye products induced significantly (p < 0.05) lower insulinaemic indices (II's) than WWB. Rye bran bread (RBB) produced significantly higher II compared with all the other rye products. Furthermore, the acute insulin response showed better correlations with the GP than with the GI of the products. The endosperm rye bread and the whole grain rye bread with lactic acid induced a significantly higher GP than RBB, WWB, white wheat- and whole grain rye porridge, respectively. A low insulin incremental peak was associated with less severe late post-prandial hypoglycaemia (r = 0.38, p < 0.001), and hypoglycaemia was negatively correlated to subjective satiety at 180 min (r = -0.28, p < 0.05). A low insulin incremental peak was also associated with a milder recovery of plasma ghrelin in the late post-prandial phase (180 min, r = 0.34, p < 0.01). Conclusion Our study shows that endosperm and wholegrain rye products induce low acute insulinaemic responses and improved glycaemic profiles. The results also suggest that the rye products possess beneficial appetite regulating properties. Further studies are needed to identify the unknown property or bioactive component(s) responsible for these beneficial metabolic features of rye.
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- 2009
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39. Bandwidth effects in stimulated Brillouin scattering driven by partially incoherent light
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Robert Bingham, B. Brandão, J. E. Santos, Luis O. Silva, R. M. G. M. Trines, Trines, RMGM [0000-0003-2553-0289], Bingham, R [0000-0002-9843-7635], Silva, LO [0000-0003-2906-924X], and Apollo - University of Cambridge Repository
- Subjects
stimulated Brillouin scattering ,laser-plasma interactions ,FOS: Physical sciences ,Physics::Optics ,Radiation ,01 natural sciences ,Instability ,parametric instabilities ,010305 fluids & plasmas ,photon kinetics ,Brillouin scattering ,Dispersion relation ,0103 physical sciences ,Bandwidth (computing) ,Statistical theory ,010306 general physics ,Physics ,Condensed Matter Physics ,Physics - Plasma Physics ,Computational physics ,Intensity (physics) ,Plasma Physics (physics.plasm-ph) ,Nuclear Energy and Engineering ,Monochromatic color ,Optics (physics.optics) ,Physics - Optics - Abstract
A generalized Wigner-Moyal statistical theory of radiation is used to obtain a general dispersion relation for Stimulated Brillouin Scattering (SBS) driven by a broadband radiation field with arbitrary statistics. The monochromatic limit is recovered from our general result, reproducing the classic monochromatic dispersion relation. The behavior of the growth rate of the instability as a simultaneous function of the bandwidth of the pump wave, the intensity of the incident field and the wave number of the scattered wave is further explored by numerically solving the dispersion relation. Our results show that the growth rate of SBS can be reduced by 1/3 for a bandwidth of 0.3 nm, for typical experimental parameters., 23 pages, 4 figures
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- 2021
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40. Weibel-Instability-Mediated Collisionless Shocks in the Laboratory with Ultraintense Lasers
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Silva, LO
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- 2012
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41. Photobiomodulation (100 mW) caution applied to tattooed skin: a cross-sectional study.
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Silva LO, da Silva AJ, de Bona Sartor AT, Pedro GM, Kuriki HU, das Neves LMS, Barbosa RI, and Marcolino AM
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- Humans, Cross-Sectional Studies, Adult, Female, Male, Young Adult, Middle Aged, Low-Level Light Therapy methods, Tattooing, Skin radiation effects, Skin innervation
- Abstract
Photobiomodulation is a technique that can modulate cellular processes and promote therapeutic effects, with the vast majority of applications being painless and nonperceptible. This study aims to determine whether tattooed skin influences cutaneous sensory perception during photobiomodulation application. A cross-sectional study. Participants: 30 participants with tattooed skin on some body regions, mainly on the upper limbs. Data collection was performed in a controlled laboratory environment by a previously trained evaluator. Four modes of irradiation were applied to the skin of the participants, and their sensory perceptions were analyzed with the average time and energy for participants to manifest during irradiations of the PBM. The interventions showed statistically significant differences when comparing the different application mode groups in terms of intervention time with the placebo model. There was an average time and energy during the irradiations: cluster 12s (1.2 J), 660 nm 21s (2.1 J) and 808 nm 14s (1.4 J) until the participants manifested. As a limitation of the study, we can describe the non-observation of skin types I and VI according to the Fitzpatrick scale. This study was evident that tattoos may affect cutaneous sensory perception during photobiomodulation irradiation in all application modes, and the first manifestations reported were: warmth, tingling, and heating., Competing Interests: Declarations. Competing interests: The LASER CLUSTER, PBM will be performed using the E-light IRL equipment from DMC® (São Carlos, São Paulo, Brazil). It was loaned for use by LARAL - Locomotor Apparatus Assessment and Intervention Laboratory at the Federal University of Santa Catarina., (© 2025. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
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- 2025
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42. NMR spectroscopy reveals insights into mechanisms of GPCR signaling.
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Silva LO, Wijesekara AV, and Eddy MT
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Competing Interests: Declaration of interests No interests are declared.
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- 2025
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43. Reproductive outcomes of prepubertal Bos indicus beef heifers raised in a pasture-based feeding system submitted to ovulation induction strategies prior to a timed-artificial insemination protocol.
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Alves RLOR, E Silva LO, Consentini CEC, Cavalcanti PR, Balistrieri M, Barros GV, Nagle E, and Sartori R
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- Animals, Cattle physiology, Female, Pregnancy, Estradiol pharmacology, Estradiol blood, Estradiol administration & dosage, Sexual Maturation drug effects, Animal Feed analysis, Insemination, Artificial veterinary, Insemination, Artificial methods, Progesterone blood, Progesterone pharmacology, Progesterone administration & dosage, Ovulation Induction veterinary, Ovulation Induction methods
- Abstract
Reproductive outcomes were evaluated in Nelore (Bos indicus) heifers submitted to one, two or no ovulation induction protocols based on progesterone (P4) and estradiol (E2) prior to a timed-artificial insemination (TAI) protocol. A total of 1,437 heifers (13.0 ± 0.8 mo old; 3.1 ± 0.1 of body condition score [BCS] and 279.9 ± 25.8 kg of body weight [BW]) were randomly assigned to 1 of 3 treatments: 0IND (n = 486): no ovulation induction protocol; 1IND (n = 481): one ovulation induction protocol; or 2IND (n = 470): two ovulation induction protocols. On Day -47, heifers from 2IND received a disinfected intravaginal P4 device (2 g, previously used for 21 d), kept until Day -40, when 0.5 mg of E2 cypionate (EC) was given. On Day -19, heifers from 2IND and 1IND underwent the same protocol. On Day 0, all heifers were submitted to the same TAI protocol, starting with a P4 device (0.5 g), 0.5 mg of cloprostenol sodium (PGF), and 1.5 mg of E2 benzoate. On Day 7, P4 device was removed, 0.5 mg of PGF, 0.5 mg of EC, and 200 IU of equine chorionic gonadotropin (eCG) were administered. The TAI was performed 2 d later (Day 9). Blood samples were collected on Days -47 and 0, to determine the presence of CL (circulating P4 concentrations ≥ 1.0 ng/mL). Ultrasound was performed on Days 40, 75 and between Day 150 and parturition to assess pregnancy per AI (P/AI) and pregnancy loss (PL). Statistical analyses were performed using SAS 9.4 (
a-c P ≤ 0.05;A,B 0.05 < P ≤ 0.10). The proportion of heifers with CL on Day -47 was similar among groups (3.4%). A greater proportion of heifers from 1IND had CL on Day 0, followed by 2IND, then 0IND (87.9a ; 80.4b ; 28.8c %). There was an effect of treatment on expression of estrus (2IND: 66.6a ; 1IND: 67.2a ; 0IND: 57.4b %), P/AI on Day 40 (2IND: 53.4a ; 1IND: 43.9b ; 0IND: 46.5b %), P/AI on Day 75 (2IND: 49.8a ; 1IND: 40.5b ; 0IND: 44.4ab %) and final P/AI (2IND: 45.5a ; 1IND: 35.8b ; 0IND: 40.5ab %). No differences were observed in PL (40-75 = 6.3%; 75-final = 9.6%; Total = 15.3%). Particularly within lighter heifers, there was an effect of treatment on P/AI on Day 40 (0IND: 39.2b ; 1IND: 43.3ab ; 2IND: 53.9a %) and on Day 75 (0IND: 36.6B ; 1IND: 39.0AB ; 2IND: 48.5A %). At the first pregnancy diagnosis, more nonpregnant heifers from 2IND had CL on Day 40 than 0IND, but 1IND did not differ from the other groups (85.4a ; 74.8b ; 80.8ab %). In conclusion, ovulation induction protocols performed prior to the TAI protocol increased the proportion of heifers with CL on Day 0. The use of two induction protocols resulted in greater fertility, particularly in lighter heifers, and increased cyclicity among nonpregnant heifers. These results indicate that this strategy may be an optimized method for inducing cyclicity and enhancing fertility of prepubertal Nelore heifers raised in pasture-based feeding systems., (Copyright © 2024 Elsevier Inc. All rights reserved.)- Published
- 2024
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44. Association Between Inappropriate Prescribing According to the 2023 Beers Criteria and Different Health Outcomes: A 1-Year Longitudinal Study in Community-Dwelling Older Adults.
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da Silva RM, Lucchetti ALG, Ferreira MEC, Silva LO, da Silva Ezequiel O, Martins ELM, and Lucchetti G
- Abstract
Introduction: This study aimed to investigate the association between the 2023 Beers criteria for inappropriate prescribing and different health outcomes among community-dwelling older individuals after a 1-year follow-up period and to assess the use and factors associated with inappropriate prescribing., Methods: This longitudinal population study spanning from 2017 to 2018 included 490 community-dwelling older adults (≥60 years old) receiving care from family medicine teams in the city of São João del-Rei, Brazil. The 2023 Beers criteria was used to identify potentially inappropriate medications (PIMs). Community health workers carried out interviews assessing different health outcomes, such as cognition, sleep, mental health, quality of life, successful aging, and life satisfaction. Generalized estimating equations were used to evaluate whether the presence of PIMs was longitudinally associated with diverse outcomes following the 1-year follow-up period., Results: A total of 255 (52%) of the participants used at least one PIM. The most common PIMs were benzodiazepines (36.5-38.3%), followed by proton pump inhibitors (16.2-18.4%) and sulfonylureas (9.8-10.6%). Some sociodemographic factors (e.g., marital status and race) and clinical factors (e.g., difficulties in activities of daily living and the number of diseases) were associated with the presence and/or number of PIMs at baseline. In the longitudinal analysis, the presence of PIMs exhibited associations with a spectrum of outcomes observed after a 1-year follow-up period. These outcomes included diminished physical quality of life (B = -0.21; p = 0.030), disrupted sleep patterns (B = 1.14; p < 0.001), compromised mental health-depression (B = 1.04; p = 0.041), stress (B = 2.00; p = 0.001), and anxiety (B = 1.26; p = 0.004), successful aging (B = -1.92; p = 0.033), and satisfaction with life (B = -0.77; p = 0.013)., Conclusion: The use of at least one PIM, according to the 2023 Beers criteria, was high and associated with worse health outcomes. This underscores the imperative for healthcare professionals to exercise caution when prescribing medications to older patients., Competing Interests: Declarations. Funding: This study received no funding. Conflict of Interest Statement: Giancarlo Lucchetti is an Editorial Board member of Drugs – Real World Outcomes. Giancarlo Lucchetti was not involved in the selection of peer reviewers for the manuscript nor any of the subsequent editorial decisions. The other authors declare no competing interests. Ethical Approval: Approval for the study was obtained from the Research Ethics Committee (REC) of the Federal University of Juiz de Fora (UFJF) (No. 1.431.964) and the study was performed in accordance with the standards of ethics outlined in the Declaration of Helsinki. Consent to Participate: All participants voluntarily signed an informed consent form. Availability of Data and Material: The datasets generated during and/or analyzed in the present study are available from the corresponding author upon reasonable request. Code Availability: Not applicable Author Contributions: ALGL, ELMM, GL contributed to study concept and design, RMS, ALGL, MECF, LOS, ELMM, GL contributed to the acquisition of data and/or subjects, GL, ALGL conducted the analysis, and all authors contributed to the interpretation of data and writing the manuscript., (© 2024. The Author(s).)
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- 2025
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45. Snail vectors of Schistosoma mansoni in Alagoas, Northeast Brazil: spatial distribution in the hydrographic grid of the state.
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Lima MWDS, da Silva GIL, Silva LO, Machado JPV, Lima PD, Ramos RES, Bezerra LP, and Santos IGA
- Abstract
Schistosomiasis mansoni is a parasitic infectious disease of significant epidemiological importance caused by Schistosoma mansoni. The intermediate hosts are snails of the genus Biomphalaria spp. As gastropods are crucial for the spread of the disease, this study aimed to assess the influence of water bodies on the distribution of snails responsible for transmitting S. mansoni in the state of Alagoas. It is an ecological study with a spatial approach, carried out from 1997 to 2017. We considered all Biomphalaria snails captured and positive for S. mansoni in the state. Representative maps were created for better data visualization, having as unit of analysis the municipalities of Alagoas. We also calculated the natural infection rate of the snails (number of positives/number of captured). During the study period, 34 619 Biomphalaria snails were captured, consisting of Biomphalaria glabrata (30 132), Biomphalaria straminea (4445) and Biomphalaria tenagophila (42). The seventh Health Region (HR) of the state had the highest number of specimens collected (B. glabrata=15 676), while the sixth HR had the highest positivity rate (9.2%). Regarding hydrography, these snails were primarily found along the Jacuípe, Mundaú, Paraíba, São Miguel, Coruripe, Piauí, Perucaba and Boacica rivers. Our data reinforce the occurrence of the three medically significant snail species responsible for schistosomiasis transmission in Alagoas. Additionally, our findings can be used as a basis for malacological activities because we report the presence of these animals in the main rivers of the state., (© The Author(s) 2024. Published by Oxford University Press on behalf of Royal Society of Tropical Medicine and Hygiene.)
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- 2024
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46. Soybean oil, linoleic acid source, in lamb diets: carcass traits and meat quality.
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Lima VGO, da Silva LO, de Freitas Júnior JE, Alba HDR, Brant LMS, Dos Santos Pina D, de Carvalho Mesquita BMA, Azevêdo JAG, de Lima Júnior DM, de Araújo MLGML, and de Carvalho GGP
- Subjects
- Animals, Male, Linoleic Acid analysis, Linoleic Acid administration & dosage, Animal Nutritional Physiological Phenomena, Random Allocation, Red Meat analysis, Meat analysis, Soybean Oil administration & dosage, Soybean Oil analysis, Animal Feed analysis, Diet veterinary, Sheep, Domestic physiology
- Abstract
We developed a study to determine the ideal level of inclusion of soybean oil (SBOil) in the diet without affecting the quantitative and qualitative parameters of the carcass and meat of lambs in a feedlot system; therefore, determining the ideal level of inclusion. Forty male lambs (Santa Inês breed) were used. The initial body weight and age averaged 34.88 ± 3.19 kg and 5 months, respectively. Experimental units (lambs) were randomly distributed in 5 different diets: inclusion levels of SBOil: 0, 30, 60, 90, and 120 g/kg of dry matter (DM). The SOil inclusion reduced the DM intake (P < 0.001), Total digestible nutrients (P = 0.004), and crude protein (P < 0.001). Total weight gain (P < 0.001) decreased with the SBOil inclusion and subcutaneous fat thickness (P = 0.017) showed the same behaviour. The final body weight decreased by 42.9 g/kgDM until the inclusion level of 30 g/kgDM; from this level it was reduced by 145 g/kgDM. The hot and cold carcass weights (P = 0.013) decreased by 36.6 g/kgDM after including 30 g/kgDM of SBOil. Meat physicochemical composition was not altered (P > 0.05). Lower meat tenderness values were obtained at the levels of 60 and 90 g/kgDM. The inclusion above 30 g/kgDM decreased meat tenderness. It is concluded that soybean oil should be included up to 30 g/kgDM in diets. It is important to note that with diets with 60% concentrate, SBOil levels greater than 30 g/kgDM promote yield losses., (© 2024. The Author(s), under exclusive licence to Springer Nature B.V.)
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- 2024
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47. Paracoccidioides lutzii Infects Galleria mellonella Employing Formamidase as a Virulence Factor.
- Author
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Pereira ED, Moreira TR, Cruz-Leite VRM, Tomazett MV, Souza Silva LO, Graziani D, Martins JA, Amaral AC, Weber SS, Parente-Rocha JA, Soares CMA, and Borges CL
- Subjects
- Animals, Virulence, Paracoccidioidomycosis microbiology, Fungal Proteins genetics, Fungal Proteins metabolism, Disease Models, Animal, Gene Silencing, Virulence Factors genetics, Virulence Factors metabolism, Larva microbiology, Moths microbiology, Paracoccidioides pathogenicity, Paracoccidioides enzymology, Paracoccidioides genetics
- Abstract
The formamidase (FMD) enzyme plays an important role in fungal thriving by releasing a secondary nitrogen source as a product of its activity. In Paracoccidioides species, previous studies have demonstrated the upregulation of this enzyme in a wide range of starvation and infective-like conditions. However, Paracoccidioides lutzii formamidase has not yet been defined as a virulence factor. Here, by employing in vivo infections using an fmd-silenced strain in Galleria mellonella larvae model, we demonstrate the influence of formamidase in P. lutzii's immune stimulation and pathogenicity. The formamidase silencing resulted in improper arrangement of the nodules, poor melanogenesis and decreased fungal burden. Thus, we suggest that formamidase may be a piece composing the process of molecular recognition by Galleria immune cells. Furthermore, formamidase silencing doubled the observed survival rate of the larvae, demonstrating its importance in fungal virulence in vivo. Therefore, our findings indicate that formamidase contributes to Galleria's immune incitement and establishes the role of this enzyme as a P. lutzii virulence factor., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2024 Pereira et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
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- 2024
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48. Pilot deployment of a cloud-based universal medical image repository in a large public health system: A protocol study.
- Author
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Pacheco VMG, Paiva JPQ, Furriel BCRS, Santos PV, Ferreira Junior JR, Reis MRC, Tornieri D, Ribeiro GAS, Silva LO, Nogueira SA, Loureiro RM, and Calixto WP
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- Humans, Diagnostic Imaging methods, Public Health, Pilot Projects, Databases, Factual, Computer Security, Data Management methods, Cloud Computing, Artificial Intelligence
- Abstract
This paper outlines the protocol for the deployment of a cloud-based universal medical image repository system. The proposal aims not only at the deployment but also at the automatic expansion of the platform, incorporating Artificial Intelligence (AI) for the analysis of medical image examinations. The methodology encompasses efficient data management through a universal database, along with the deployment of various AI models designed to assist in diagnostic decision-making. By presenting this protocol, the goal is to overcome technical challenges and issues that impact all phases of the workflow, from data management to the deployment of AI models in the healthcare sector. These challenges include ethical considerations, compliance with legal regulations, establishing user trust, and ensuring data security. The system has been deployed, with a tested and validated proof of concept, possessing the capability to receive thousands of images daily and to sustain the ongoing deployment of new AI models to expedite the analysis process in medical image exams., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2024 Pacheco et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
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- 2024
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49. Soybean Oil, Linoleic Acid Source, in Lamb Diets: Intake, Digestibility, Performance, Ingestive Behaviour, and Blood Metabolites.
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Lima VGO, da Silva LO, de Freitas Júnior JE, Alba HDR, Silva WP, Pina DDS, Leite LC, Rodrigues CS, Santos SA, Becker CA, and de Carvalho GGP
- Abstract
The objective of the current study was to evaluate the effects of soybean oil inclusion in diets on feeding behaviour, digestibility, performance, and blood metabolites of feedlot lambs. Forty non-castrated Santa Inês lambs with a mean age of 5 months and initial body weight of 34.88 ± 3.19 kg were used in a 40-day feeding trial. The lambs were distributed in five experimental diets with the inclusion of increasing soybean oil (SO) levels: 0, 30, 60, 90, and 120 g/kg DM. The SO inclusion promoted a linear reduction in DM intake ( p < 0.001), crude protein (CP, p < 0.001), non-fibrous carbohydrates (NFC, p < 0.001), and total digestible nutrients (TDN, p = 0.004). There was an increasing quadratic effect on the intake of ether extract (EE; p = 0.002) and decreasing for neutral detergent fiber ( p = 0.005). The soybean oil inclusion promoted the greater apparent digestibility of CP ( p = 0.016), EE ( p = 0.005), NDFom ( p < 0.001), and TDN ( p < 0.001); on the other hand, the apparent digestibility of NFC ( p = 0.005) was decreased. The average daily gain decreased ( p < 0.001) with SO inclusion. The SO inclusion increased feeding time ( p = 0.004), reduced the efficiency of DM rumination ( p = 0.001), and reduced the concentration of blood N-ureic ( p < 0.001). Considering the productive parameters, SO can be included in diets and it is recommended that we include SO of up to 41 g/kg DM in diets for fattening lambs as the ideal maximum level. The strategy implemented to adapt lambs to increasing levels of high-fat diet mitigated the detrimental effects of lipids on the rumen, with high-density energy intake being the constraining factor on performance.
- Published
- 2024
- Full Text
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50. Comparison of gonadotropin-releasing hormone and estradiol benzoate plus gonadotropin-releasing hormone to initiate a progesterone-based timed artificial insemination resynchronization protocol in lactating dairy cows.
- Author
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Consentini CEC, Melo LF, Abadia T, Gonzales B, Motta JCL, Alves RLOR, E Silva LO, Wiltbank MC, and Sartori R
- Subjects
- Animals, Cattle, Female, Pregnancy, Insemination, Artificial veterinary, Progesterone administration & dosage, Progesterone pharmacology, Lactation, Estradiol analogs & derivatives, Estradiol administration & dosage, Estradiol pharmacology, Gonadotropin-Releasing Hormone pharmacology, Estrus Synchronization methods
- Abstract
The present study compared 2 strategies to initiate a progesterone (P4)-based timed artificial insemination (TAI) protocol for lactating dairy cows: only GnRH or estradiol benzoate (EB) plus GnRH (EB+GnRH). Lactating Holstein cows (n = 487; 184 primiparous and 303 multiparous) from 2 commercial dairy herds were used for their second or greater services postpartum. Each week, cows that were nonpregnant at the pregnancy diagnosis 32 d after a previous AI were randomly assigned to 1 of 2 experimental groups that differed only in the strategy to initiate (d 0) the TAI protocol. On d 0, every cow received a 2.0-g P4 implant; in the EB+GnRH group, cows were treated with 2.0 mg i.m. of EB and 16.8 µg i.m. of the GnRH analog buserelin acetate, whereas in the GnRH group, cows received only 16.8 µg i.m. of GnRH. On d 7 after the initial treatment, 0.530 mg i.m. of cloprostenol sodium (PGF) was administered in all cows, followed by a second dose on d 8, concomitant with 1.0 mg i.m. of estradiol cypionate and P4 implant withdrawal. The TAI was performed on d 10 (48 h after P4 device withdrawal) in both experimental groups. Only conventional Holstein semen was used throughout the study. The percentage of cows with corpus luteum (CL) on d 0 (73%) and overall ovulation rate after d 0 (54%) did not differ between groups. The CL regression between d 0 and the first PGF treatment was greater in the EB+GnRH group than the GnRH group (42% vs. 31%). Consequently, the proportion of cows with CL at PGF was greater when only GnRH was used on d 0 compared with EB+GnRH (86% vs. 82%), and the mean number of CL at PGF was greater (1.23 vs. 1.11). The expression of estrus near TAI was greater in GnRH group (84% vs. 77%), and cows showing estrus had greater (44% vs. 10%) pregnancy per AI (P/AI) on d 32 for both treatments. We found no effect of the presence of CL on d 0 or at PGF, nor of ovulation after d 0 or CL regression between d 0 and d 7 on fertility. However, fertility was critically impaired when cows did not have CL at both times, d 0 and at PGF treatment. We did not observe any interaction between treatment and other variables, and the P/AI was similar in cows receiving EB+GnRH or only GnRH on d 0 (37.8% vs. 36.6%). In summary, although there was no detectable difference in P/AI between treatments, this study demonstrated potential negative physiological outcomes caused by EB treatment on d 0 (greater incidence of luteolysis after d 0 and fewer cows with CL at PGF treatment). Overall, we found no benefit of adding EB at the initiation of a P4-based TAI protocol on fertility compared with using GnRH alone, despite differences in ovarian dynamics and expression of estrus., (The Authors. Published by Elsevier Inc. on behalf of the American Dairy Science Association®. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).)
- Published
- 2024
- Full Text
- View/download PDF
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