2,428 results on '"Maenhout, A"'
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2. Wood-based biochars produced at low pyrolysis temperatures are good carriers for a Trichoderma-based biopesticide
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Debode, Jane, Viaene, Jarinda, Maenhout, Kristof, Joos, Lisa, França, Soraya C., Cuypers, Ann, and Vandecasteele, Bart
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- 2024
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3. Genome-wide association study for in vitro digestibility and related traits in triticale forage
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De Zutter, Anneleen, Piro, Maria Chiara, Maenhout, Steven, Maurer, Hans Peter, De Boever, Johan, Muylle, Hilde, Roldán-Ruiz, Isabel, and Haesaert, Geert
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- 2024
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4. A mobile healthy lifestyle intervention to promote mental health in adolescence: a mixed-methods evaluation
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Peuters, Carmen, Maenhout, Laura, Cardon, Greet, De Paepe, Annick, DeSmet, Ann, Lauwerier, Emelien, Leta, Kenji, and Crombez, Geert
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- 2024
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5. Wood-based biochars produced at low pyrolysis temperatures are good carriers for a Trichoderma-based biopesticide
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Jane Debode, Jarinda Viaene, Kristof Maenhout, Lisa Joos, Soraya C. França, Ann Cuypers, and Bart Vandecasteele
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Biocontrol formulations ,Carbon ,Feedstock ,Trichoderma asperellum T34 ,Environmental sciences ,GE1-350 ,Agriculture - Abstract
Abstract The goal was to investigate biochars’ potential as carrier for commercial Trichoderma-based biopesticides, facilitating their application in soil or growing media. Thirty-five biochars produced from various feedstocks and pyrolysis temperatures were chemically characterized. Incubation and cold storage tests using a commercial Trichoderma-based biopesticide were done. Properties leading to good Trichoderma carrier capacity (TCC) are wood-based feedstocks and low pyrolysis temperatures (p
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- 2024
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6. A machine learning approach to rank pricing problems in branch-and-price.
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Pavlína Koutecká, Premysl Sucha, Jan Hula, and Broos Maenhout
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- 2025
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7. Estimated Cerebral Perfusion Pressure and Intracranial Pressure in Septic Patients
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Crippa, Ilaria Alice, Vincent, Jean-Louis, Zama Cavicchi, Federica, Pozzebon, Selene, Gaspard, Nicolas, Maenhout, Christelle, Creteur, Jacques, and Taccone, Fabio Silvio
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- 2024
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8. Linnemannia elongata: A Key Species in Chitin-Based Plant Growth Promotion
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Caroline De Tender, Michiel Vandecasteele, Sarah Ommeslag, Noémie De Zutter, Ellen Vandenbussche, Annelies Haegeman, Kris Audenaert, Leilei Li, Bart Vandecasteele, Floris Voorthuijzen, Kristof Maenhout, Stien Beirinckx, Rosita Barneveldt, Sofie Goormachtig, and Jane Debode
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chitin ,growth promotion ,Linnemannia ,metabarcoding ,whole genome sequencing ,Plant culture ,SB1-1110 ,Microbial ecology ,QR100-130 ,Plant ecology ,QK900-989 - Abstract
Chitin has proven to be a valuable alternative to mineral fertilizers in growing media. We recently hypothesized that chitin might work as a biostimulant, attracting plant growth-promoting microbes to the rhizosphere. In particular, Mortierellales species increase in abundance massively with chitin application and might have a profound role in chitin-mediated plant growth promotion. We isolated four strains of this order classified as Linnemannia elongata from chitin-enriched growing medium and the lettuce rhizosphere. The isolates induced a consistent increase in shoot and root fresh weight and increased chlorophyll content of Arabidopsis thaliana in vitro, as measured by multispectral imaging. By studying the isolate's genomes, we postulated that this growth promotion was induced through auxin production, translocation of calcium to the plant, or both. The synergy between chitin and L. elongata was demonstrated by (i) the chitinase activity and chitin degradation potential of all isolates and (ii) the positive effect of chitin and L. elongata seed coating on germination of A. thaliana seeds compared with L. elongata seed coating without chitin. We conclude that chitin-related growth promotion is dependent on activation of the microbial community, with L. elongata as a key species. [Graphic: see text] Copyright © 2024 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license.
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- 2024
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9. Near-real-time global gridded daily CO$_2$ emissions 2021
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Dou, Xinyu, Hong, Jinpyo, Ciais, Philippe, Chevallier, Frédéric, Yan, Feifan, Yu, Ying, Hu, Yifan, Huo, Da, Sun, Yun, Wang, Yilong, Davis, Steven J., Crippa, Monica, Janssens-Maenhout, Greet, Guizzardi, Diego, Solazzo, Efisio, Lin, Xiaojuan, Song, Xuanren, Zhu, Biqing, Cui, Duo, Ke, Piyu, Wang, Hengqi, Zhou, Wenwen, Huang, Xia, Deng, Zhu, and Liu, Zhu
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Physics - Atmospheric and Oceanic Physics - Abstract
We present a near-real-time global gridded daily CO$_2$ emissions dataset (GRACED) throughout 2021. GRACED provides gridded CO$_2$ emissions at a 0.1degree*0.1degree spatial resolution and 1-day temporal resolution from cement production and fossil fuel combustion over seven sectors, including industry, power, residential consumption, ground transportation, international aviation, domestic aviation, and international shipping. GRACED is prepared from a near-real-time daily national CO$_2$ emissions estimates (Carbon Monitor), multi-source spatial activity data emissions and satellite NO$_2$ data for time variations of those spatial activity data. GRACED provides the most timely overview of emissions distribution changes, which enables more accurate and timely identification of when and where fossil CO$_2$ emissions have rebounded and decreased. Uncertainty analysis of GRACED gives a grid-level two-sigma uncertainty of value of 19.9% in 2021, indicating the reliability of GRACED was not sacrificed for the sake of higher spatiotemporal resolution that GRACED provides. Continuing to update GRACED in a timely manner could help policymakers monitor energy and climate policies' effectiveness and make adjustments quickly.
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- 2022
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10. Dynamic personnel rescheduling: insights and recovery strategies
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Maenhout, Broos and Vanhoucke, Mario
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- 2024
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11. Near-real-time global gridded daily CO2 emissions 2021
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Dou, Xinyu, Hong, Jinpyo, Ciais, Philippe, Chevallier, Frédéric, Yan, Feifan, Yu, Ying, Hu, Yifan, Huo, Da, Sun, Yun, Wang, Yilong, Davis, Steven J, Crippa, Monica, Janssens-Maenhout, Greet, Guizzardi, Diego, Solazzo, Efisio, Lin, Xiaojuan, Song, Xuanren, Zhu, Biqing, Cui, Duo, Ke, Piyu, Wang, Hengqi, Zhou, Wenwen, Huang, Xia, Deng, Zhu, and Liu, Zhu
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Earth Sciences ,Engineering ,Geoinformatics ,Climate Action - Abstract
We present a near-real-time global gridded daily CO2 emissions dataset (GRACED) throughout 2021. GRACED provides gridded CO2 emissions at a 0.1° × 0.1° spatial resolution and 1-day temporal resolution from cement production and fossil fuel combustion over seven sectors, including industry, power, residential consumption, ground transportation, international aviation, domestic aviation, and international shipping. GRACED is prepared from the near-real-time daily national CO2 emissions estimates (Carbon Monitor), multi-source spatial activity data emissions and satellite NO2 data for time variations of those spatial activity data. GRACED provides the most timely overview of emissions distribution changes, which enables more accurate and timely identification of when and where fossil CO2 emissions have rebounded and decreased. Uncertainty analysis of GRACED gives a grid-level two-sigma uncertainty of value of ±19.9% in 2021, indicating the reliability of GRACED was not sacrificed for the sake of higher spatiotemporal resolution that GRACED provides. Continuing to update GRACED in a timely manner could help policymakers monitor energy and climate policies' effectiveness and make adjustments quickly.
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- 2023
12. Dynamic personnel rescheduling: insights and recovery strategies.
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Broos Maenhout and Mario Vanhoucke
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- 2024
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13. A two-layer heuristic for patient sequencing in the operating room theatre considering multiple resource phases
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Akbarzadeh, Babak and Maenhout, Broos
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- 2024
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14. A machine learning approach to rank pricing problems in branch-and-price
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Koutecká, Pavlína, Šůcha, Přemysl, Hůla, Jan, and Maenhout, Broos
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- 2025
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15. Robustness and dynamic sentiment
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Maenhout, Pascal J., Vedolin, Andrea, and Xing, Hao
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- 2025
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16. Genome-wide association study for in vitro digestibility and related traits in triticale forage
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Anneleen De Zutter, Maria Chiara Piro, Steven Maenhout, Hans Peter Maurer, Johan De Boever, Hilde Muylle, Isabel Roldán-Ruiz, and Geert Haesaert
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Triticale ,Forage ,in vitro digestibility ,GWAS ,QTL ,SNP ,Botany ,QK1-989 - Abstract
Abstract Background Triticale is making its way on dairy farms as an alternative forage crop. This requires the availability of high-yielding triticale varieties with good digestibility. Triticale forage breeding mainly focussed on biomass yield, but efforts to improve digestibility are increasing. We previously investigated the interrelationships among different quality traits in soft dough triticale: starch, acid detergent fibre and in vitro digestibility of organic matter (IVOMD) and of neutral detergent fibre (IVNDFD) of the total plant, IVNDFD and Klason lignin of the stems, and ear proportion and stem length. Here we determine the genetic control of these traits, using a genome-wide association (GWAS) approach. A total of 33,231 DArTseq SNP markers assessed in a collection of 118 winter triticale genotypes, including 101 varieties and 17 breeding lines, were used. Results The GWAS identified a total of 53 significant marker-trait associations (MTAs). The highest number of significantly associated SNP markers (n = 10) was identified for total plant IVNDFD. A SNP marker on chromosome 1A (4211801_19_C/T; 474,437,796 bp) was found to be significantly associated with ear proportion, and plant and stem IVNDFD, with the largest phenotypic variation for ear proportion (R²p = 0.23). Based on MTAs, candidate genes were identified which were of particular relevance for variation in in vitro digestibility (IVD) because they are putatively involved in plasma membrane transport, cytoskeleton organisation, carbohydrate metabolic processes, protein phosphorylation, and sterol and cell wall biogenesis. Interestingly, a xyloglucan-related candidate gene on chromosome 2R, SECCE2Rv1G0126340, was located in close proximity of a SNP significantly associated with stem IVNDFD. Furthermore, quantitative trait loci previously reported in wheat co-localized with significantly associated SNP markers in triticale. Conclusions A collection of 118 winter triticale genotypes combined with DArTseq SNP markers served as a source for identifying 53 MTAs and several candidate genes for forage IVD and related traits through a GWAS approach. Taken together, the results of this study demonstrate that the genetic diversity available in this collection can be further exploited for research and breeding purposes to improve the IVD of triticale forage.
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- 2024
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17. A mobile healthy lifestyle intervention to promote mental health in adolescence: a mixed-methods evaluation
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Carmen Peuters, Laura Maenhout, Greet Cardon, Annick De Paepe, Ann DeSmet, Emelien Lauwerier, Kenji Leta, and Geert Crombez
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Mobile health applications ,Adolescents ,Mental health promotion ,Healthy lifestyles ,Digital behavior change interventions ,Participatory development ,Public aspects of medicine ,RA1-1270 - Abstract
Abstract Background A healthy lifestyle may improve mental health. It is yet not known whether and how a mobile intervention can be of help in achieving this in adolescents. This study investigated the effectiveness and perceived underlying mechanisms of the mobile health (mHealth) intervention #LIFEGOALS to promote healthy lifestyles and mental health. #LIFEGOALS is an evidence-based app with activity tracker, including self-regulation techniques, gamification elements, a support chatbot, and health narrative videos. Methods A quasi-randomized controlled trial (N = 279) with 12-week intervention period and process evaluation interviews (n = 13) took place during the COVID-19 pandemic. Adolescents (12-15y) from the general population were allocated at school-level to the intervention (n = 184) or to a no-intervention group (n = 95). Health-related quality of life (HRQoL), psychological well-being, mood, self-perception, peer support, resilience, depressed feelings, sleep quality and breakfast frequency were assessed via a web-based survey; physical activity, sedentary time, and sleep routine via Axivity accelerometers. Multilevel generalized linear models were fitted to investigate intervention effects and moderation by pandemic-related measures. Interviews were coded using thematic analysis. Results Non-usage attrition was high: 18% of the participants in the intervention group never used the app. An additional 30% stopped usage by the second week. Beneficial intervention effects were found for physical activity (χ 2 1 = 4.36, P = .04), sedentary behavior (χ 2 1 = 6.44, P = .01), sleep quality (χ 2 1 = 6.11, P = .01), and mood (χ 2 1 = 2.30, P = .02). However, effects on activity-related behavior were only present for adolescents having normal sports access, and effects on mood only for adolescents with full in-school education. HRQoL (χ 2 2 = 14.72, P
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- 2024
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18. CoCO2-MOSAIC 1.0: a global mosaic of regional, gridded, fossil, and biofuel CO2 emission inventories
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R. Urraca, G. Janssens-Maenhout, N. Álamos, L. Berna-Peña, M. Crippa, S. Darras, S. Dellaert, H. Denier van der Gon, M. Dowell, N. Gobron, C. Granier, G. Grassi, M. Guevara, D. Guizzardi, K. Gurney, N. Huneeus, S. Keita, J. Kuenen, A. Lopez-Noreña, E. Puliafito, G. Roest, S. Rossi, A. Soulie, and A. Visschedijk
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Environmental sciences ,GE1-350 ,Geology ,QE1-996.5 - Abstract
Gridded bottom-up inventories of CO2 emissions are needed in global CO2 inversion schemes as priors to initialize transport models and as a complement to top-down estimates to identify the anthropogenic sources. Global inversions require gridded datasets almost in near-real time that are spatially and methodologically consistent at a global scale. This may result in a loss of more detailed information that can be assessed by using regional inventories because they are built with a greater level of detail including country-specific information and finer resolution data. With this aim, a global mosaic of regional, gridded CO2 emission inventories, hereafter referred to as CoCO2-MOSAIC 1.0, has been built in the framework of the CoCO2 project. CoCO2-MOSAIC 1.0 provides gridded (0.1∘ × 0.1∘) monthly emissions fluxes of CO2 fossil fuel (CO2ff, long cycle) and CO2 biofuel (CO2bf, short cycle) for the years 2015–2018 disaggregated in seven sectors. The regional inventories integrated are CAMS-REG-GHG 5.1 (Europe), DACCIWA 2.0 (Africa), GEAA-AEI 3.0 (Argentina), INEMA 1.0 (Chile), REAS 3.2.1 (East, Southeast, and South Asia), and VULCAN 3.0 (USA). EDGAR 6.0, CAMS-GLOB-SHIP 3.1 and CAMS-GLOB-TEMPO 3.1 are used for gap-filling. CoCO2-MOSAIC 1.0 can be recommended as a global baseline emission inventory for 2015 which is regionally accepted as a reference, and as such we use the mosaic to inter-compare the most widely used global emission inventories: CAMS-GLOB-ANT 5.3, EDGAR 6.0, ODIAC v2020b, and CEDS v2020_04_24. CoCO2-MOSAIC 1.0 has the highest CO2ff (36.7 Gt) and CO2bf (5.9 Gt) emissions globally, particularly in the USA and Africa. Regional emissions generally have a higher seasonality representing better the local monthly profiles and are generally distributed over a higher number of pixels, due to the more detailed information available. All super-emitting pixels from regional inventories contain a power station (CoCO2 database), whereas several super-emitters from global inventories are likely incorrectly geolocated, which is likely because regional inventories provide large energy emitters as point sources including regional information on power plant locations. CoCO2-MOSAIC 1.0 is freely available at zenodo (https://doi.org/10.5281/zenodo.7092358; Urraca et al., 2023) and at the JRC Data Catalogue (https://data.jrc.ec.europa.eu/dataset/6c8f9148-ce09-4dca-a4d5-422fb3682389, last access: 15 May 2023; Urraca Valle et al., 2023).
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- 2024
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19. A study on policy decisions to embed flexibility for reactive recovery in the planning and scheduling process in operating rooms
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Akbarzadeh, Babak and Maenhout, Broos
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- 2024
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20. Intercropping indices evaluation on grain legume-small grain cereals mixture: a critical meta-analysis review
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Zustovi, Riccardo, Landschoot, Sofie, Dewitte, Kevin, Verlinden, Greet, Dubey, Reena, Maenhout, Steven, and Haesaert, Geert
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- 2024
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21. Antibiofilm activity of Prevotella species from the cystic fibrosis lung microbiota against Pseudomonas aeruginosa
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Lucia Grassi, Kyle L. Asfahl, Sara Van den Bossche, Ine Maenhout, Andrea Sass, Yannick Vande Weygaerde, Eva Van Braeckel, Bruno Verhasselt, Jerina Boelens, Michael M. Tunney, Ajai A. Dandekar, Tom Coenye, and Aurélie Crabbé
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Pseudomonas aeruginosa ,Lung microbiota ,Cystic fibrosis ,Biofilm ,Interspecies interactions ,Biotechnology ,TP248.13-248.65 ,Microbiology ,QR1-502 - Abstract
It is increasingly recognized that interspecies interactions may modulate the pathogenicity of Pseudomonas aeruginosa during chronic lung infections. Nevertheless, while the interaction between P. aeruginosa and pathogenic microorganisms co-infecting the lungs has been widely investigated, little is known about the influence of other members of the lung microbiota on the infection process. In this study, we focused on investigating the impact of Prevotella species isolated from the sputum of people with cystic fibrosis (pwCF) on biofilm formation and virulence factor production by P. aeruginosa. Screening of a representative collection of Prevotella species recovered from clinical samples showed that several members of this genus (8 out 10 isolates) were able to significantly reduce biofilm formation of P. aeruginosa PAO1, without impact on growth. Among the tested isolates, the strongest biofilm-inhibitory activity was observed for Prevotella intermedia and Prevotella nigrescens, which caused a reduction of up to 90% in the total biofilm biomass of several P. aeruginosa isolates from pwCF. In addition, a strain-specific effect of P. nigrescens on the ability of P. aeruginosa to produce proteases and pyocyanin was observed, with significant alterations in the levels of these virulence factors detected in LasR mutant strains. Overall, these results suggest that non-pathogenic bacteria from the lung microbiota may regulate pathogenicity traits of P. aeruginosa, and possibly affect the outcome of chronic lung infections.
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- 2024
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22. Harnessing monocrop breeding strategies for intercrops
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Reena Dubey, Riccardo Zustovi, Sofie Landschoot, Kevin Dewitte, Greet Verlinden, Geert Haesaert, and Steven Maenhout
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plant breeding ,intercrop ,monocrop ,compatibility traits ,heritability ,genetic gain ,Plant culture ,SB1-1110 - Abstract
Intercropping is considered advantageous for many reasons, including increased yield stability, nutritional value and the provision of various regulating ecosystem services. However, intercropping also introduces diverse competition effects between the mixing partners, which can negatively impact their agronomic performance. Therefore, selecting complementary intercropping partners is the key to realizing a well-mixed crop production. Several specialized intercrop breeding concepts have been proposed to support the development of complementary varieties, but their practical implementation still needs to be improved. To lower this adoption threshold, we explore the potential of introducing minor adaptations to commonly used monocrop breeding strategies as an initial stepping stone towards implementing dedicated intercrop breeding schemes. While we acknowledge that recurrent selection for reciprocal mixing abilities is likely a more effective breeding paradigm to obtain genetic progress for intercrops, a well-considered adaptation of monoculture breeding strategies is far less intrusive concerning the design of the breeding programme and allows for balancing genetic gain for both monocrop and intercrop performance. The main idea is to develop compatible variety combinations by improving the monocrop performance in the two breeding pools in parallel and testing for intercrop performance in the later stages of selection. We show that the optimal stage for switching from monocrop to intercrop testing should be adapted to the specificity of the crop and the heritability of the traits involved. However, the genetic correlation between the monocrop and intercrop trait performance is the primary driver of the intercrop breeding scheme optimization process.
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- 2024
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23. Global Gridded Daily CO$_2$ Emissions
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Dou, Xinyu, Wang, Yilong, Ciais, Philippe, Chevallier, Frédéric, Davis, Steven J., Crippa, Monica, Janssens-Maenhout, Greet, Guizzardi, Diego, Solazzo, Efisio, Yan, Feifan, Huo, Da, Bo, Zheng, Deng, Zhu, Zhu, Biqing, Wang, Hengqi, Zhang, Qiang, Gentine, Pierre, and Liu, Zhu
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Physics - Atmospheric and Oceanic Physics ,Economics - General Economics - Abstract
Precise and high-resolution carbon dioxide (CO$_2$) emission data is of great importance of achieving the carbon neutrality around the world. Here we present for the first time the near-real-time Global Gridded Daily CO$_2$ Emission Datasets (called GRACED) from fossil fuel and cement production with a global spatial-resolution of 0.1$^\circ$ by 0.1$^\circ$ and a temporal-resolution of 1-day. Gridded fossil emissions are computed for different sectors based on the daily national CO$_2$ emissions from near real time dataset (Carbon Monitor), the spatial patterns of point source emission dataset Global Carbon Grid (GID), Emission Database for Global Atmospheric Research (EDGAR) and spatiotemporal patters of satellite nitrogen dioxide (NO$_2$) retrievals. Our study on the global CO$_2$ emissions responds to the growing and urgent need for high-quality, fine-grained near-real-time CO2 emissions estimates to support global emissions monitoring across various spatial scales. We show the spatial patterns of emission changes for power, industry, residential consumption, ground transportation, domestic and international aviation, and international shipping sectors between 2019 and 2020. This help us to give insights on the relative contributions of various sectors and provides a fast and fine-grained overview of where and when fossil CO$_2$ emissions have decreased and rebounded in response to emergencies (e.g. COVID-19) and other disturbances of human activities than any previously published dataset. As the world recovers from the pandemic and decarbonizes its energy systems, regular updates of this dataset will allow policymakers to more closely monitor the effectiveness of climate and energy policies and quickly adapt.
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- 2021
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24. The consolidated European synthesis of CO2 emissions and removals for the European Union and United Kingdom: 1990–2020
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M. J. McGrath, A. M. R. Petrescu, P. Peylin, R. M. Andrew, B. Matthews, F. Dentener, J. Balkovič, V. Bastrikov, M. Becker, G. Broquet, P. Ciais, A. Fortems-Cheiney, R. Ganzenmüller, G. Grassi, I. Harris, M. Jones, J. Knauer, M. Kuhnert, G. Monteil, S. Munassar, P. I. Palmer, G. P. Peters, C. Qiu, M.-J. Schelhaas, O. Tarasova, M. Vizzarri, K. Winkler, G. Balsamo, A. Berchet, P. Briggs, P. Brockmann, F. Chevallier, G. Conchedda, M. Crippa, S. N. C. Dellaert, H. A. C. Denier van der Gon, S. Filipek, P. Friedlingstein, R. Fuchs, M. Gauss, C. Gerbig, D. Guizzardi, D. Günther, R. A. Houghton, G. Janssens-Maenhout, R. Lauerwald, B. Lerink, I. T. Luijkx, G. Moulas, M. Muntean, G.-J. Nabuurs, A. Paquirissamy, L. Perugini, W. Peters, R. Pilli, J. Pongratz, P. Regnier, M. Scholze, Y. Serengil, P. Smith, E. Solazzo, R. L. Thompson, F. N. Tubiello, T. Vesala, and S. Walther
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Environmental sciences ,GE1-350 ,Geology ,QE1-996.5 - Abstract
Quantification of land surface–atmosphere fluxes of carbon dioxide (CO2) and their trends and uncertainties is essential for monitoring progress of the EU27+UK bloc as it strives to meet ambitious targets determined by both international agreements and internal regulation. This study provides a consolidated synthesis of fossil sources (CO2 fossil) and natural (including formally managed ecosystems) sources and sinks over land (CO2 land) using bottom-up (BU) and top-down (TD) approaches for the European Union and United Kingdom (EU27+UK), updating earlier syntheses (Petrescu et al., 2020, 2021). Given the wide scope of the work and the variety of approaches involved, this study aims to answer essential questions identified in the previous syntheses and understand the differences between datasets, particularly for poorly characterized fluxes from managed and unmanaged ecosystems. The work integrates updated emission inventory data, process-based model results, data-driven categorical model results, and inverse modeling estimates, extending the previous period 1990–2018 to the year 2020 to the extent possible. BU and TD products are compared with the European national greenhouse gas inventory (NGHGI) reported by parties including the year 2019 under the United Nations Framework Convention on Climate Change (UNFCCC). The uncertainties of the EU27+UK NGHGI were evaluated using the standard deviation reported by the EU member states following the guidelines of the Intergovernmental Panel on Climate Change (IPCC) and harmonized by gap-filling procedures. Variation in estimates produced with other methods, such as atmospheric inversion models (TD) or spatially disaggregated inventory datasets (BU), originate from within-model uncertainty related to parameterization as well as structural differences between models. By comparing the NGHGI with other approaches, key sources of differences between estimates arise primarily in activities. System boundaries and emission categories create differences in CO2 fossil datasets, while different land use definitions for reporting emissions from land use, land use change, and forestry (LULUCF) activities result in differences for CO2 land. The latter has important consequences for atmospheric inversions, leading to inversions reporting stronger sinks in vegetation and soils than are reported by the NGHGI. For CO2 fossil emissions, after harmonizing estimates based on common activities and selecting the most recent year available for all datasets, the UNFCCC NGHGI for the EU27+UK accounts for 926 ± 13 Tg C yr−1, while eight other BU sources report a mean value of 948 [937,961] Tg C yr−1 (25th, 75th percentiles). The sole top-down inversion of fossil emissions currently available accounts for 875 Tg C in this same year, a value outside the uncertainty of both the NGHGI and bottom-up ensemble estimates and for which uncertainty estimates are not currently available. For the net CO2 land fluxes, during the most recent 5-year period including the NGHGI estimates, the NGHGI accounted for −91 ± 32 Tg C yr−1, while six other BU approaches reported a mean sink of −62 [-117,-49] Tg C yr−1, and a 15-member ensemble of dynamic global vegetation models (DGVMs) reported −69 [-152,-5] Tg C yr−1. The 5-year mean of three TD regional ensembles combined with one non-ensemble inversion of −73 Tg C yr−1 has a slightly smaller spread (0th–100th percentiles of [-135,+45] Tg C yr−1), and it was calculated after removing net land–atmosphere CO2 fluxes caused by lateral transport of carbon (crop trade, wood trade, river transport, and net uptake from inland water bodies), resulting in increased agreement with the NGHGI and bottom-up approaches. Results at the category level (Forest Land, Cropland, Grassland) generally show good agreement between the NGHGI and category-specific models, but results for DGVMs are mixed. Overall, for both CO2 fossil and net CO2 land fluxes, we find that current independent approaches are consistent with the NGHGI at the scale of the EU27+UK. We conclude that CO2 emissions from fossil sources have decreased over the past 30 years in the EU27+UK, while land fluxes are relatively stable: positive or negative trends larger (smaller) than 0.07 (−0.61) Tg C yr−2 can be ruled out for the NGHGI. In addition, a gap on the order of 1000 Tg C yr−1 between CO2 fossil emissions and net CO2 uptake by the land exists regardless of the type of approach (NGHGI, TD, BU), falling well outside all available estimates of uncertainties. However, uncertainties in top-down approaches to estimate CO2 fossil emissions remain uncharacterized and are likely substantial, in addition to known uncertainties in top-down estimates of the land fluxes. The data used to plot the figures are available at https://doi.org/10.5281/zenodo.8148461 (McGrath et al., 2023).
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- 2023
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25. Antibiofilm activity of Prevotella species from the cystic fibrosis lung microbiota against Pseudomonas aeruginosa
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Grassi, Lucia, Asfahl, Kyle L., Van den Bossche, Sara, Maenhout, Ine, Sass, Andrea, Vande Weygaerde, Yannick, Van Braeckel, Eva, Verhasselt, Bruno, Boelens, Jerina, Tunney, Michael M., Dandekar, Ajai A., Coenye, Tom, and Crabbé, Aurélie
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- 2024
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26. Near-real-time global gridded daily CO2 emissions
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Dou, Xinyu, Wang, Yilong, Ciais, Philippe, Chevallier, Frédéric, Davis, Steven J, Crippa, Monica, Janssens-Maenhout, Greet, Guizzardi, Diego, Solazzo, Efisio, Yan, Feifan, Huo, Da, Zheng, Bo, Zhu, Biqing, Cui, Duo, Ke, Piyu, Sun, Taochun, Wang, Hengqi, Zhang, Qiang, Gentine, Pierre, Deng, Zhu, and Liu, Zhu
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Affordable and Clean Energy ,Climate Action ,2020 ,daily ,global change ,gridded CO2 emission ,near real time - Abstract
Precise and high-resolution carbon dioxide (CO2) emission data is of great importance in achieving carbon neutrality around the world. Here we present for the first time the near-real-time Global Gridded Daily CO2 Emissions Dataset (GRACED) from fossil fuel and cement production with a global spatial resolution of 0.1° by 0.1° and a temporal resolution of 1 day. Gridded fossil emissions are computed for different sectors based on the daily national CO2 emissions from near-real-time dataset (Carbon Monitor), the spatial patterns of point source emission dataset Global Energy Infrastructure Emissions Database (GID), Emission Database for Global Atmospheric Research (EDGAR), and spatiotemporal patters of satellite nitrogen dioxide (NO2) retrievals. Our study on the global CO2 emissions responds to the growing and urgent need for high-quality, fine-grained, near-real-time CO2 emissions estimates to support global emissions monitoring across various spatial scales. We show the spatial patterns of emission changes for power, industry, residential consumption, ground transportation, domestic and international aviation, and international shipping sectors from January 1, 2019, to December 31, 2020. This gives thorough insights into the relative contributions from each sector. Furthermore, it provides the most up-to-date and fine-grained overview of where and when fossil CO2 emissions have decreased and rebounded in response to emergencies (e.g., coronavirus disease 2019 [COVID-19]) and other disturbances of human activities of any previously published dataset. As the world recovers from the pandemic and decarbonizes its energy systems, regular updates of this dataset will enable policymakers to more closely monitor the effectiveness of climate and energy policies and quickly adapt.
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- 2022
27. Global Daily CO$_2$ emissions for the year 2020
- Author
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Liu, Zhu, Deng, Zhu, Ciais, Philippe, Tan, Jianguang, Zhu, Biqing, Davis, Steven J., Andrew, Robbie, Boucher, Olivier, Arous, Simon Ben, Canadel, Pep, Dou, Xinyu, Friedlingstein, Pierre, Gentine, Pierre, Guo, Rui, Hong, Chaopeng, Jackson, Robert B., Kammen, Daniel M., Ke, Piyu, Quere, Corinne Le, Monica, Crippa, Janssens-Maenhout, Greet, Peters, Glen, Tanaka, Katsumasa, Wang, Yilong, Zheng, Bo, Zhong, Haiwang, Sun, Taochun, and Schellnhuber, Hans Joachim
- Subjects
Physics - Atmospheric and Oceanic Physics ,Economics - General Economics - Abstract
The diurnal cycle CO$_2$ emissions from fossil fuel combustion and cement production reflect seasonality, weather conditions, working days, and more recently the impact of the COVID-19 pandemic. Here, for the first time we provide a daily CO$_2$ emission dataset for the whole year of 2020 calculated from inventory and near-real-time activity data (called Carbon Monitor project: https://carbonmonitor.org). It was previously suggested from preliminary estimates that did not cover the entire year of 2020 that the pandemics may have caused more than 8% annual decline of global CO$_2$ emissions. Here we show from detailed estimates of the full year data that the global reduction was only 5.4% (-1,901 MtCO$_2$, ). This decrease is 5 times larger than the annual emission drop at the peak of the 2008 Global Financial Crisis. However, global CO$_2$ emissions gradually recovered towards 2019 levels from late April with global partial re-opening. More importantly, global CO$_2$ emissions even increased slightly by +0.9% in December 2020 compared with 2019, indicating the trends of rebound of global emissions. Later waves of COVID-19 infections in late 2020 and corresponding lockdowns have caused further CO$_2$ emissions reductions particularly in western countries, but to a much smaller extent than the declines in the first wave. That even substantial world-wide lockdowns of activity led to a one-time decline in global CO$_2$ emissions of only 5.4% in one year highlights the significant challenges for climate change mitigation that we face in the post-COVID era. These declines are significant, but will be quickly overtaken with new emissions unless the COVID-19 crisis is utilized as a break-point with our fossil-fuel trajectory, notably through policies that make the COVID-19 recovery an opportunity to green national energy and development plans.
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- 2021
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28. A genetic algorithm for the personnel task rescheduling problem with time preemption
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Borgonjon, Tessa and Maenhout, Broos
- Published
- 2024
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29. A dedicated branch-price-and-cut algorithm for advance patient planning and surgeon scheduling
- Author
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Akbarzadeh, Babak and Maenhout, Broos
- Published
- 2024
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30. The impact of dynamic learning and training on the personnel staffing decision
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Borgonjon, Tessa and Maenhout, Broos
- Published
- 2024
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31. Pott’s puffy tumour: a rare complication of sinusitis
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Marine Maenhout, Maxime Gudelj, and Allison Gilbert
- Subjects
pott puffy tumour ,tumour ,subperiosteal abscess ,sinusitis ,Medicine - Abstract
Introduction: Pott’s puffy tumour is a rare entity defined by the presence of a subperiosteal abscess of the frontal bone associated with frontal osteomyelitis. Several predisposing conditions can lead to this entity, such as frontal sinusitis. Case description: We report the case of a 15-year-old patient who presented to the emergency department for headache, fever and forehead swelling. Computed tomography revealed severe pansinusitis complicated by a subperiosteal abscess associated with frontal osteomyelitis, leading to the diagnosis of Pott’s puffy tumour. The management combined intravenous antibiotics and surgical drainage of both the sinusitis and subperiosteal abscess. Discussion: Pott’s puffy tumour represents a rare but serious complication of frontal sinusitis. Clinicians should be aware of this potential complication as the diagnosis can be challenging at an early stage but may influence the subsequent prognosis.
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- 2024
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32. Cereal-legume intercropping: a smart review using topic modelling
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Sofie Landschoot, Riccardo Zustovi, Kevin Dewitte, Nicola P. Randall, Steven Maenhout, and Geert Haesaert
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cereal ,intercrop ,legume ,text mining ,topic model ,Plant culture ,SB1-1110 - Abstract
IntroductionOver the last decade, there has been a growing interest in cereal-legume intercropping for sustainable agriculture. As a result numerous papers, including reviews, focus on this topic. Screening this large amount of papers, to identify knowledge gaps and future research opportunities, manually, would be a complex and time consuming task.Materials and methodsBibliometric analysis combined with text mining and topic modelling, to automatically find topics and to derive a representation of intercropping papers as a potential solution to reduce the workload was tested. Both common (e.g. wheat and soybean) as well as underutilized crops (e.g. buckwheat, lupin, triticale) were the focus of this study. The corpus used for the analysis was retrieved from Web of Science and Scopus on 5th September 2022 and consisted of 4,732 papers.ResultsThe number of papers on cereal-legume intercropping increased in recent years, with most studies being located in China. Literature mainly dealt with the cereals maize and wheat and the legume soybean whereas buckwheat and lupin received little attention from academic researchers. These underutilized crops are certainly interesting to be used as intercropping partners, however, additional research on optimization of management and cultivar’s choice is important. Yield and nitrogen fixation are the most commonly studied traits in cereal-legume intercropping. Last decade, there is an increasing interest in climate resilience, sustainability and biodiversity. Also the term “ecosystem services” came into play, but still with a low frequency. The regulating services and provisioning services seem to be the most studied, in contrast terms related to potential cultural services were not encountered.DiscussionIn conclusion, based on this review several research opportunities were identified. Minor crops like lupin and buckwheat need to be evaluated for their role as intercropping partners. The interaction between species based on e.g. root exudates needs to be further unraveled. Also diseases, pests and weeds in relation to intercropping deserve more attention and finally more in-depth research on the additional benefits/ecosystem services associated with intercropping systems is necessary.
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- 2024
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33. Synergizing the Behavior Change Wheel and a Cocreative Approach to Design a Physical Activity Intervention for Adolescents and Young Adults With Intellectual Disabilities: Development Study
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Laura Maenhout, Julie Latomme, Greet Cardon, Geert Crombez, Geert Van Hove, and Sofie Compernolle
- Subjects
Medicine - Abstract
BackgroundThere is a need for physical activity promotion interventions in adolescents and young adults with intellectual disabilities. Current interventions have shown limited effectiveness, which may be attributed to the absence of theory and a population-specific development. Combining a planning model (including theory) and cocreation with the target audience during intervention development could potentially address this gap. ObjectiveThis study aimed to report the systematic development of the Move it, Move ID! intervention by describing how the 8 different steps of the Behavior Change Wheel (BCW) were applied and present the results that emerged from those steps. In doing so, the (theoretical) content of the intervention is described in detail. MethodsA total of 23 adolescents and young adults (aged 14-22 years) with mild to moderate intellectual disabilities were designated as cocreators of the intervention. Across 2 groups, 6 similar cocreation sessions were organized in each. The content and sequence of the sessions were structured to align with the 8 steps of the BCW. All sessions were recorded and transcribed verbatim. Both a deductive (ie, steps of the BCW) and inductive (ie, resonating the voice of the participants) analysis approach were applied specifically focusing on identifying and describing the findings within each of the BCW steps. ResultsAfter behavioral analysis (steps 1-4), 10 intervention goals were chosen and linked to Capability, Opportunity, and Motivation–Behavior components (theory within the BCW) that needed to be addressed. Psychological capability, social opportunity, and reflective motivation were emphasized as the first targets to focus on. A key finding was the urge for real-life social connectedness and social integration, which makes the social component as part of physical activity a central theme to focus on within intervention development. Judgments on the most suitable intervention functions (step 5) and behavior change techniques (step 7) were explained. When discussing the mode of delivery of the intervention (step 8), it was underscored that solely relying on a mobile health app would not fulfill participants’ social needs. Hence, the chosen intervention adopts a dyadic approach in which young individuals with intellectual disabilities are matched with peers without intellectual disabilities to engage in physical activities together, with a mobile app playing a supportive role in this partnership. ConclusionsThe transparent description of the development process highlights why certain intervention components and behavior change techniques were chosen and how they are intertwined by means of the selected intervention design. This paper provides a detailed blueprint for practitioners wanting to integrate the BCW and its associated behavior change techniques, in combination with actively involving the target group, into their intervention development for people with intellectual disabilities.
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- 2024
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34. Effect of a Novel Training Program in Patients With Chronic Shoulder Pain Based on Implicit Motor Learning: Pilot and Feasibility Study.
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Annelies Maenhout, Wieger Heijenk, Peter Glashouwer, Lore Quatacker, Luna Praet, and Dorien Borms
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Sports medicine ,RC1200-1245 - Abstract
# Background Implicit motor learning has been shown to be effective for learning sports-related motor skills. It facilitates automaticity of movements and thereby improves performance in multitasking and high-pressure environments. Motor learning to develop motor skills and neuroplastic capacities is not sufficiently incorporated in musculoskeletal rehabilitation. Especially in patients with chronic pain conditions like shoulder pain this approach might benefit over traditional exercise programs. # Purpose/hypothesis The aim of this study was to investigate the feasibility and clinical outcome of a new implicit motor learning exercise program in a group of patients with chronic shoulder pain. # Study design Pilot and feasibility cohort study # Methods Twenty-six patients with chronic shoulder pain performed a 6-week home exercise program with weekly remote follow up by a physiotherapist. The program comprised five exercises designed to challenge overall body balance, simultaneously engaging the upper limbs in a range of reaching tasks. The tasks included reaching above the head, at and below waist level, in various directions. No instructions on correct performance were provided to foster external focus. Feasibility was assessed by (1) recruitment rate, (2) follow up rate, (3) subjective experience, (4) self-reported adverse events and (5) self-reported adherence of subjects. Clinical effects of the program were assessed with (1) the Shoulder Pain and Disability Index (SPADI), (2) the Auto-Constant score, (3) the numeric rating scale (NRS) at rest and at night, (4) the patient specific functional scale (PSFS), (5) the avoidance endurance questionnaire (AEQ), (6) patient acceptable symptom state (PASS) and (7) a global rating of change (GROC). # Results The study protocol was feasible in terms of follow up rate (16w for 28 patients), exercise adherence (77.1%± 29.41), and adverse events (no serious, 5 light adverse events). Statistically significant improvements were observed for SPADI (p\
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- 2024
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35. The association between the presence and burden of periodic discharges and outcome in septic patients: an observational prospective study
- Author
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Ferlini, Lorenzo, Maenhout, Christelle, Crippa, Ilaria Alice, Quispe-Cornejo, Armin Alvaro, Creteur, Jacques, Taccone, Fabio Silvio, and Gaspard, Nicolas
- Published
- 2023
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36. Co-creating an intervention to promote physical activity in adolescents with intellectual disabilities: lessons learned within the Move it, Move ID!-project
- Author
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Maenhout, Laura, Verloigne, Maïté, Cairns, Deborah, Cardon, Greet, Crombez, Geert, Melville, Craig, Van Hove, Geert, and Compernolle, Sofie
- Published
- 2023
- Full Text
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37. The association between the presence and burden of periodic discharges and outcome in septic patients: an observational prospective study
- Author
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Lorenzo Ferlini, Christelle Maenhout, Ilaria Alice Crippa, Armin Alvaro Quispe-Cornejo, Jacques Creteur, Fabio Silvio Taccone, and Nicolas Gaspard
- Subjects
Sepsis ,Brain dysfunction ,Periodic discharges ,Outcome and EEG ,Medical emergencies. Critical care. Intensive care. First aid ,RC86-88.9 - Abstract
Abstract Background Sepsis-associated encephalopathy (SAE) is frequent in septic patients. Electroencephalography (EEG) is very sensitive to detect early epileptic abnormalities, such as seizures and periodic discharges (PDs), and to quantify their duration (the so-called burden). However, the prevalence of these EEG abnormalities in septic patients, as well as their effect on morbidity and mortality, are still unclear. The aims of this study were to assess whether the presence of electrographic abnormalities (i.e. the absence of reactivity, the presence and burden of seizures and PDs) was associated with functional outcome and mortality in septic patients and whether these abnormalities were associated with sepsis-associated encephalopathy (SAE). Methods We prospectively included septic patients, without known chronic or acute intracranial disease or pre-existing acute encephalopathy, requiring ICU admission in a tertiary academic centre. Continuous EEG monitoring was started within 72 h after inclusion and performed for up to 7 days. A comprehensive assessment of consciousness and delirium was performed twice daily by a trained neuropsychologist. Primary endpoints were unfavourable functional outcome (UO, defined as a Glasgow Outcome Scale-Extended—GOSE—score
- Published
- 2023
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38. A nested Benders decomposition-based algorithm to solve the three-stage stochastic optimisation problem modeling population-based breast cancer screening
- Author
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Meersman, Tine, Maenhout, Broos, and Van Herck, Koen
- Published
- 2023
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39. A nested Benders decomposition-based algorithm to solve the three-stage stochastic optimisation problem modeling population-based breast cancer screening.
- Author
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Tine Meersman, Broos Maenhout, and Koen Van Herck
- Published
- 2023
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40. Kinetic chain revisited: consensus expert opinion on terminology, clinical reasoning, examination, and treatment in people with shoulder pain
- Author
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Lluch-Girbés, Enrique, Requejo-Salinas, Néstor, Fernández-Matías, Rubén, Revert, Esther, Vila Mejías, Mar, Rezende Camargo, Paula, Jaggi, Anju, Sciascia, Aaron, Horsley, Ian, Pontillo, Marisa, Gibson, Jo, Richardson, Ellie, Johansson, Fredrik, Maenhout, Annelies, Oliver, Gretchen D., Turgut, Elif, Jayaraman, Chandrasekaran, Düzgün, Irem, Borms, Dorien, Ellenbecker, Todd, and Cools, Ann
- Published
- 2023
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41. A comprehensive quantification of global nitrous oxide sources and sinks.
- Author
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Tian, Hanqin, Xu, Rongting, Canadell, Josep G, Thompson, Rona L, Winiwarter, Wilfried, Suntharalingam, Parvadha, Davidson, Eric A, Ciais, Philippe, Jackson, Robert B, Janssens-Maenhout, Greet, Prather, Michael J, Regnier, Pierre, Pan, Naiqing, Pan, Shufen, Peters, Glen P, Shi, Hao, Tubiello, Francesco N, Zaehle, Sönke, Zhou, Feng, Arneth, Almut, Battaglia, Gianna, Berthet, Sarah, Bopp, Laurent, Bouwman, Alexander F, Buitenhuis, Erik T, Chang, Jinfeng, Chipperfield, Martyn P, Dangal, Shree RS, Dlugokencky, Edward, Elkins, James W, Eyre, Bradley D, Fu, Bojie, Hall, Bradley, Ito, Akihiko, Joos, Fortunat, Krummel, Paul B, Landolfi, Angela, Laruelle, Goulven G, Lauerwald, Ronny, Li, Wei, Lienert, Sebastian, Maavara, Taylor, MacLeod, Michael, Millet, Dylan B, Olin, Stefan, Patra, Prabir K, Prinn, Ronald G, Raymond, Peter A, Ruiz, Daniel J, van der Werf, Guido R, Vuichard, Nicolas, Wang, Junjie, Weiss, Ray F, Wells, Kelley C, Wilson, Chris, Yang, Jia, and Yao, Yuanzhi
- Subjects
Crops ,Agricultural ,Nitrogen ,Nitrous Oxide ,Atmosphere ,Internationality ,Human Activities ,Agriculture ,General Science & Technology - Abstract
Nitrous oxide (N2O), like carbon dioxide, is a long-lived greenhouse gas that accumulates in the atmosphere. Over the past 150 years, increasing atmospheric N2O concentrations have contributed to stratospheric ozone depletion1 and climate change2, with the current rate of increase estimated at 2 per cent per decade. Existing national inventories do not provide a full picture of N2O emissions, owing to their omission of natural sources and limitations in methodology for attributing anthropogenic sources. Here we present a global N2O inventory that incorporates both natural and anthropogenic sources and accounts for the interaction between nitrogen additions and the biochemical processes that control N2O emissions. We use bottom-up (inventory, statistical extrapolation of flux measurements, process-based land and ocean modelling) and top-down (atmospheric inversion) approaches to provide a comprehensive quantification of global N2O sources and sinks resulting from 21 natural and human sectors between 1980 and 2016. Global N2O emissions were 17.0 (minimum-maximum estimates: 12.2-23.5) teragrams of nitrogen per year (bottom-up) and 16.9 (15.9-17.7) teragrams of nitrogen per year (top-down) between 2007 and 2016. Global human-induced emissions, which are dominated by nitrogen additions to croplands, increased by 30% over the past four decades to 7.3 (4.2-11.4) teragrams of nitrogen per year. This increase was mainly responsible for the growth in the atmospheric burden. Our findings point to growing N2O emissions in emerging economies-particularly Brazil, China and India. Analysis of process-based model estimates reveals an emerging N2O-climate feedback resulting from interactions between nitrogen additions and climate change. The recent growth in N2O emissions exceeds some of the highest projected emission scenarios3,4, underscoring the urgency to mitigate N2O emissions.
- Published
- 2020
42. Co-creating an intervention to promote physical activity in adolescents with intellectual disabilities: lessons learned within the Move it, Move ID!-project
- Author
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Laura Maenhout, Maïté Verloigne, Deborah Cairns, Greet Cardon, Geert Crombez, Craig Melville, Geert Van Hove, and Sofie Compernolle
- Subjects
Co-creation ,Intervention ,Physical activity ,Adolescents ,Intellectual disabilities ,Patient and public involvement ,Medicine ,Medicine (General) ,R5-920 - Abstract
Plain English summary Studies show that people with intellectual disabilities are less physically active than the general population. This is a problem, since people with intellectual disabilities experience more health problems, and physical activity might be an important angle to reduce these health problems. However, current interventions to promote physical activity in this target group do not appear to work because they do not match their needs and preferences. Therefore, it is important to develop interventions together with them, in collaboration, what is called "co-creation”. This has not happened much in research with people with intellectual disabilities before (and especially not with adolescents having intellectual disabilities), because researchers often have the perception that they do not have the capabilities to understand and discuss research related topics. This study elaborates on the researchers’ experiences in conducting co-creative research with adolescents and young adults with mild to moderate intellectual disabilities, and formulates 'lessons learned' so that future researchers can start from these findings when they themselves want to engage in a co-creation process with this target group. The results showed that co-creation is feasible with this target group, if co-creation methods are selected that fit the target group (e.g. making use of visuals, asking concrete (non-abstract) questions and providing clear but short instructions). We suggest that (standardized) innovative and creative working methods are needed when conducting co-creation with this target group. Moreover, to be better armed against the enormous flexibility expected of a co-creative researcher, it might be helpful to make an assessment of the group dynamics before conducting co-creation. The presence and contribution of the physical education teacher in these co-creation sessions was seen as an added value for several reasons. By describing this entire process transparently and in detail, this could be a first step in making co-creation an evidence-based methodology, also for vulnerable populations.
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- 2023
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43. The consolidated European synthesis of CH4 and N2O emissions for the European Union and United Kingdom: 1990–2019
- Author
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A. M. R. Petrescu, C. Qiu, M. J. McGrath, P. Peylin, G. P. Peters, P. Ciais, R. L. Thompson, A. Tsuruta, D. Brunner, M. Kuhnert, B. Matthews, P. I. Palmer, O. Tarasova, P. Regnier, R. Lauerwald, D. Bastviken, L. Höglund-Isaksson, W. Winiwarter, G. Etiope, T. Aalto, G. Balsamo, V. Bastrikov, A. Berchet, P. Brockmann, G. Ciotoli, G. Conchedda, M. Crippa, F. Dentener, C. D. Groot Zwaaftink, D. Guizzardi, D. Günther, J.-M. Haussaire, S. Houweling, G. Janssens-Maenhout, M. Kouyate, A. Leip, A. Leppänen, E. Lugato, M. Maisonnier, A. J. Manning, T. Markkanen, J. McNorton, M. Muntean, G. D. Oreggioni, P. K. Patra, L. Perugini, I. Pison, M. T. Raivonen, M. Saunois, A. J. Segers, P. Smith, E. Solazzo, H. Tian, F. N. Tubiello, T. Vesala, G. R. van der Werf, C. Wilson, and S. Zaehle
- Subjects
Environmental sciences ,GE1-350 ,Geology ,QE1-996.5 - Abstract
Knowledge of the spatial distribution of the fluxes of greenhouse gases (GHGs) and their temporal variability as well as flux attribution to natural and anthropogenic processes is essential to monitoring the progress in mitigating anthropogenic emissions under the Paris Agreement and to inform its global stocktake. This study provides a consolidated synthesis of CH4 and N2O emissions using bottom-up (BU) and top-down (TD) approaches for the European Union and UK (EU27 + UK) and updates earlier syntheses (Petrescu et al., 2020, 2021). The work integrates updated emission inventory data, process-based model results, data-driven sector model results and inverse modeling estimates, and it extends the previous period of 1990–2017 to 2019. BU and TD products are compared with European national greenhouse gas inventories (NGHGIs) reported by parties under the United Nations Framework Convention on Climate Change (UNFCCC) in 2021. Uncertainties in NGHGIs, as reported to the UNFCCC by the EU and its member states, are also included in the synthesis. Variations in estimates produced with other methods, such as atmospheric inversion models (TD) or spatially disaggregated inventory datasets (BU), arise from diverse sources including within-model uncertainty related to parameterization as well as structural differences between models. By comparing NGHGIs with other approaches, the activities included are a key source of bias between estimates, e.g., anthropogenic and natural fluxes, which in atmospheric inversions are sensitive to the prior geospatial distribution of emissions. For CH4 emissions, over the updated 2015–2019 period, which covers a sufficiently robust number of overlapping estimates, and most importantly the NGHGIs, the anthropogenic BU approaches are directly comparable, accounting for mean emissions of 20.5 Tg CH4 yr−1 (EDGARv6.0, last year 2018) and 18.4 Tg CH4 yr−1 (GAINS, last year 2015), close to the NGHGI estimates of 17.5±2.1 Tg CH4 yr−1. TD inversion estimates give higher emission estimates, as they also detect natural emissions. Over the same period, high-resolution regional TD inversions report a mean emission of 34 Tg CH4 yr−1. Coarser-resolution global-scale TD inversions result in emission estimates of 23 and 24 Tg CH4 yr−1 inferred from GOSAT and surface (SURF) network atmospheric measurements, respectively. The magnitude of natural peatland and mineral soil emissions from the JSBACH–HIMMELI model, natural rivers, lake and reservoir emissions, geological sources, and biomass burning together could account for the gap between NGHGI and inversions and account for 8 Tg CH4 yr−1. For N2O emissions, over the 2015–2019 period, both BU products (EDGARv6.0 and GAINS) report a mean value of anthropogenic emissions of 0.9 Tg N2O yr−1, close to the NGHGI data (0.8±55 % Tg N2O yr−1). Over the same period, the mean of TD global and regional inversions was 1.4 Tg N2O yr−1 (excluding TOMCAT, which reported no data). The TD and BU comparison method defined in this study can be operationalized for future annual updates for the calculation of CH4 and N2O budgets at the national and EU27 + UK scales. Future comparability will be enhanced with further steps involving analysis at finer temporal resolutions and estimation of emissions over intra-annual timescales, which is of great importance for CH4 and N2O, and may help identify sector contributions to divergence between prior and posterior estimates at the annual and/or inter-annual scale. Even if currently comparison between CH4 and N2O inversion estimates and NGHGIs is highly uncertain because of the large spread in the inversion results, TD inversions inferred from atmospheric observations represent the most independent data against which inventory totals can be compared. With anticipated improvements in atmospheric modeling and observations, as well as modeling of natural fluxes, TD inversions may arguably emerge as the most powerful tool for verifying emission inventories for CH4, N2O and other GHGs. The referenced datasets related to figures are visualized at https://doi.org/10.5281/zenodo.7553800 (Petrescu et al., 2023).
- Published
- 2023
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44. Near-real-time global gridded daily CO2 emissions 2021
- Author
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Xinyu Dou, Jinpyo Hong, Philippe Ciais, Frédéric Chevallier, Feifan Yan, Ying Yu, Yifan Hu, Da Huo, Yun Sun, Yilong Wang, Steven J. Davis, Monica Crippa, Greet Janssens-Maenhout, Diego Guizzardi, Efisio Solazzo, Xiaojuan Lin, Xuanren Song, Biqing Zhu, Duo Cui, Piyu Ke, Hengqi Wang, Wenwen Zhou, Xia Huang, Zhu Deng, and Zhu Liu
- Subjects
Science - Abstract
Abstract We present a near-real-time global gridded daily CO2 emissions dataset (GRACED) throughout 2021. GRACED provides gridded CO2 emissions at a 0.1° × 0.1° spatial resolution and 1-day temporal resolution from cement production and fossil fuel combustion over seven sectors, including industry, power, residential consumption, ground transportation, international aviation, domestic aviation, and international shipping. GRACED is prepared from the near-real-time daily national CO2 emissions estimates (Carbon Monitor), multi-source spatial activity data emissions and satellite NO2 data for time variations of those spatial activity data. GRACED provides the most timely overview of emissions distribution changes, which enables more accurate and timely identification of when and where fossil CO2 emissions have rebounded and decreased. Uncertainty analysis of GRACED gives a grid-level two-sigma uncertainty of value of ±19.9% in 2021, indicating the reliability of GRACED was not sacrificed for the sake of higher spatiotemporal resolution that GRACED provides. Continuing to update GRACED in a timely manner could help policymakers monitor energy and climate policies’ effectiveness and make adjustments quickly.
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- 2023
- Full Text
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45. Comment on “Significant Improvement in Digoxin Immunoassays Over Four Decades: Newer Assays Are Less Affected by Interferences.” The Case of Apalutamide Interference
- Author
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Maenhout, Yorich, Oyaert, Matthijs, Duroi, Iris, Vandecasteele, Els, and Stove, Veronique
- Published
- 2023
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46. The impact of dynamic learning and training on the personnel staffing decision.
- Author
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Tessa Borgonjon and Broos Maenhout
- Published
- 2024
- Full Text
- View/download PDF
47. A genetic algorithm for the personnel task rescheduling problem with time preemption.
- Author
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Tessa Borgonjon and Broos Maenhout
- Published
- 2024
- Full Text
- View/download PDF
48. A two-layer heuristic for patient sequencing in the operating room theatre considering multiple resource phases.
- Author
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Babak Akbarzadeh and Broos Maenhout
- Published
- 2024
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49. Oracle selection provides insight into how far off practice is from Utopia in plant breeding
- Author
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David Vanavermaete, Steven Maenhout, Jan Fostier, and Bernard De Baets
- Subjects
genetic gain ,genetic selection ,genetic variation ,genetic value ,oracle ,scoping ,Plant culture ,SB1-1110 - Abstract
Since the introduction of genomic selection in plant breeding, high genetic gains have been realized in different plant breeding programs. Various methods based on genomic estimated breeding values (GEBVs) for selecting parental lines that maximize the genetic gain as well as methods for improving the predictive performance of genomic selection have been proposed. Unfortunately, it remains difficult to measure to what extent these methods really maximize long-term genetic values. In this study, we propose oracle selection, a hypothetical frame of mind that uses the ground truth to optimally select parents or optimize the training population in order to maximize the genetic gain in each breeding cycle. Clearly, oracle selection cannot be applied in a true breeding program, but allows for the assessment of existing parental selection and training population update methods and the evaluation of how far these methods are from the optimal utopian solution.
- Published
- 2023
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50. Constructing and evaluating a master surgery schedule using a service-level approach
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Deklerck, Loïc, Akbarzadeh, Babak, and Maenhout, Broos
- Published
- 2022
- Full Text
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