ORCID Profile
0000-0002-6639-1273
Current Organisations
Aarhus University
,
Qatar University College of Health Sciences
,
Jordan University of Science and Technology
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Publisher: Springer Science and Business Media LLC
Date: 22-08-2022
DOI: 10.1038/S41467-022-32464-0
Abstract: Diversified cropping systems, especially those including legumes, have been proposed to enhance food production with reduced inputs and environmental impacts. However, the impact of legume pre-crops on main crop yield and its drivers has never been systematically investigated in a global context. Here, we synthesize 11,768 yield observations from 462 field experiments comparing legume-based and non-legume cropping systems and show that legumes enhanced main crop yield by 20%. These yield advantages decline with increasing N fertilizer rates and crop ersity of the main cropping system. The yield benefits are consistent among main crops (e.g., rice, wheat, maize) and evident across pedo-climatic regions. Moreover, greater yield advantages (32% vs. 7%) are observed in low- vs. high-yielding environments, suggesting legumes increase crop production with low inputs (e.g., in Africa or organic agriculture). In conclusion, our study suggests that legume-based rotations offer a critical pathway for enhancing global crop production, especially when integrated into low-input and low- ersity agricultural systems.
Publisher: Elsevier BV
Date: 10-2015
Publisher: Elsevier BV
Date: 2016
Publisher: Springer Science and Business Media LLC
Date: 19-07-2023
Publisher: SAGE Publications
Date: 30-06-2020
Abstract: To evaluate the efficacy of a newly developed evidence-based low back pain (LBP) management smartphone application. A double-blinded randomized controlled trial where participants randomly assigned to either an experimental group (EG) or a control group (CG). Governmental and private institutions. About 40 office workers, aged 30 to 55 years, had pain due to non-specific LBP 3 on Visual Analogue Scale, and with pain chronicity 3 months. The EG received full version of the application ‘Relieve my back’ included evidence-based instructions and therapeutic exercises for LBP management, whereas the CG received placebo version included instructions about nutrition. Primary outcome measures included pain measured by Visual Analogue Scale (VAS), disability measured by Oswestry Disability Index (ODI), and quality of life measured by Short-Form Health Survey (SF-12). Following six weeks of using the application, compared to CG, the EG group demonstrated significant decrease in pain intensity (−3.45 (2.21) vs −0.11 (1.66), P 0.001), in ODI score (−11.05 (10.40) vs −0.58 (9.0), P = 0.002), and significant increase in physical component of SF-12 (12.85 (17.20) vs −4.63 (12.04), P = 0.001). ‘Relieve my back’ application might be efficacious in reducing pain and disability and improving the quality of life of office workers with non-specific LBP.
Publisher: BMJ
Date: 11-2019
DOI: 10.1136/BMJOPEN-2019-031725
Abstract: To explore the level of cardiopulmonary resuscitation (CPR) knowledge among allied health professions (AHPs) students and its associated factors. This is a cross-sectional study assessing CPR knowledge among AHP students. A multidisciplinary expert panel designed a survey, which then was piloted to 20 potential participants. The survey had two sections, including demographics and knowledge questions. Knowledge questions scores ranged from 0 to 10, where 10 indicates all questions were answered correctly. A total of 883 students completed the surveys and were included in the study. The mean age was 21 years (±1.6) and the majority were females (73.1%). A total of 693 (78.5%) students did not receive previous CPR training and the top barriers to receiving CPR training were unawareness of training opportunities and a lack of time. Participants had a mean CPR knowledge score of 3.9 (±1.7) out of 10 maximum potential points. Trained participants had a higher mean score compared with the untrained (4.6 (±1.6) vs 3.8 (±1.6), p .001). Previous training (adjusted β=0.6 95% CI 0.2 to 0.9 p .001) and being in the physical therapy programme (adjusted β=0.5 95% CI 0.1 to 0.8 p=0.01) were associated with higher knowledge. There is poor knowledge of CPR among AHP students including trained in iduals. Efforts to increase the awareness of CPR should target students and professionals who are highly likely to encounter patients requiring CPR. Compulsory training courses, shorter training periods as well as recurrent and regular refreshing courses and use of various media devices are recommended.
Publisher: Springer Science and Business Media LLC
Date: 22-12-2014
DOI: 10.1038/NCLIMATE2470
Publisher: Springer Science and Business Media LLC
Date: 09-07-2020
DOI: 10.1038/S41597-020-0534-3
Abstract: The FLUXNET2015 dataset provides ecosystem-scale data on CO 2 , water, and energy exchange between the biosphere and the atmosphere, and other meteorological and biological measurements, from 212 sites around the globe (over 1500 site-years, up to and including year 2014). These sites, independently managed and operated, voluntarily contributed their data to create global datasets. Data were quality controlled and processed using uniform methods, to improve consistency and intercomparability across sites. The dataset is already being used in a number of applications, including ecophysiology studies, remote sensing studies, and development of ecosystem and Earth system models. FLUXNET2015 includes derived-data products, such as gap-filled time series, ecosystem respiration and photosynthetic uptake estimates, estimation of uncertainties, and metadata about the measurements, presented for the first time in this paper. In addition, 206 of these sites are for the first time distributed under a Creative Commons (CC-BY 4.0) license. This paper details this enhanced dataset and the processing methods, now made available as open-source codes, making the dataset more accessible, transparent, and reproducible.
Publisher: Elsevier BV
Date: 08-2022
Publisher: Wiley
Date: 11-02-2022
DOI: 10.1111/GCB.16060
Abstract: Research in global change ecology relies heavily on global climatic grids derived from estimates of air temperature in open areas at around 2 m above the ground. These climatic grids do not reflect conditions below vegetation canopies and near the ground surface, where critical ecosystem functions occur and most terrestrial species reside. Here, we provide global maps of soil temperature and bioclimatic variables at a 1-km
Publisher: Informa UK Limited
Date: 03-2021
DOI: 10.2147/OAEM.S291904
Publisher: Springer Science and Business Media LLC
Date: 09-06-2013
DOI: 10.1038/NCLIMATE1916
Publisher: Informa UK Limited
Date: 23-03-2021
DOI: 10.1080/09593985.2021.1901324
Abstract: Low Back Pain Knowledge Questionnaire (LBP_KQ) was originally developed and validated for English speakers but not yet available for Arabic speakers. To translate, cross-culturally adapt, and test the psychometric properties of the Arabic version of the LBP_KQ. Translation and cross-cultural adaptation were performed according to recommended guidelines. Construct validity was assessed through principal component analysis, and contrasted groups including physical therapists, nurses, and patients with low back pain. Concurrent validity was assessed by the correlation of LBP_KQ with the fear avoidance-belief questionnaire and depression, anxiety, and stress scale. Reliability was assessed using internal consistency (Cronbach's α) and test-retest reliability using intra-class correlation coefficient (ICC) and Bland-Altman analyses. Sensitivity to change was measured by comparing an educational intervention group (IG) and a control group (CG). The questionnaire has four components. Physical therapists had significantly ( The Arabic version of LBP_KQ is valid, reliable, and sensitive to change.
Publisher: Wiley
Date: 22-11-2018
DOI: 10.1111/GCB.14481
Abstract: Wheat grain protein concentration is an important determinant of wheat quality for human nutrition that is often overlooked in efforts to improve crop production. We tested and applied a 32-multi-model ensemble to simulate global wheat yield and quality in a changing climate. Potential benefits of elevated atmospheric CO
Publisher: Springer Science and Business Media LLC
Date: 20-11-2020
Publisher: Springer Science and Business Media LLC
Date: 12-09-2016
DOI: 10.1038/NCLIMATE3115
Publisher: Oxford University Press (OUP)
Date: 21-06-2022
DOI: 10.1093/JXB/ERAC221
Abstract: Crop multi-model ensembles (MME) have proven to be effective in increasing the accuracy of simulations in modelling experiments. However, the ability of MME to capture crop responses to changes in sowing dates and densities has not yet been investigated. These management interventions are some of the main levers for adapting cropping systems to climate change. Here, we explore the performance of a MME of 29 wheat crop models to predict the effect of changing sowing dates and rates on yield and yield components, on two sites located in a high-yielding environment in New Zealand. The experiment was conducted for 6 years and provided 50 combinations of sowing date, sowing density and growing season. We show that the MME simulates seasonal growth of wheat well under standard sowing conditions, but fails under early sowing and high sowing rates. The comparison between observed and simulated in-season fraction of intercepted photosynthetically active radiation (FIPAR) for early sown wheat shows that the MME does not capture the decrease of crop above ground biomass during winter months due to senescence. Models need to better account for tiller competition for light, nutrients, and water during vegetative growth, and early tiller senescence and tiller mortality, which are exacerbated by early sowing, high sowing densities, and warmer winter temperatures.
Publisher: Wiley
Date: 06-10-2023
DOI: 10.1111/GCB.16962
Publisher: Elsevier BV
Date: 11-2021
Publisher: Springer Science and Business Media LLC
Date: 17-07-2017
Abstract: Increasing the accuracy of crop productivity estimates is a key element in planning adaptation strategies to ensure global food security under climate change. Process-based crop models are effective means to project climate impact on crop yield, but have large uncertainty in yield simulations. Here, we show that variations in the mathematical functions currently used to simulate temperature responses of physiological processes in 29 wheat models account for >50% of uncertainty in simulated grain yields for mean growing season temperatures from 14 °C to 33 °C. We derived a set of new temperature response functions that when substituted in four wheat models reduced the error in grain yield simulations across seven global sites with different temperature regimes by 19% to 50% (42% average). We anticipate the improved temperature responses to be a key step to improve modelling of crops under rising temperature and climate change, leading to higher skill of crop yield projections.
Publisher: Springer Science and Business Media LLC
Date: 07-07-2022
Publisher: Elsevier BV
Date: 03-1298
Publisher: Springer Science and Business Media LLC
Date: 28-02-2021
DOI: 10.1007/S11325-021-02333-Z
Abstract: Sleep disorders are common among nurses and may have negative effects on their performance and well-being. This study aimed to investigate the level of sleep quality and its possible associated factors among hospital-based nurses in Jordan. A cross-sectional design targeting Jordanian hospital-based nurses. In addition to demographics and work habits, the outcome measures included Pittsburgh Sleep Quality Index (PSQI), Nordic Musculoskeletal Questionnaire (NMQ), and Depression Anxiety Stress Scale (DASS). Data were analyzed descriptively and by a multiple variable linear regression analysis to identify predictors of sleep quality. In total, 597 nurses with a mean age of 32.1 (± 5.7) years participated in this study and 47% were men. PSQI mean score was 7.8 (± 3.7) and 68% of the participants showed sleep quality deficits. Stress (β = 0.15 [95%CI 0.13 to 0.19, P < 0.001), depression (β = 0.05 [95%CI 0.009 to 0.08], P = 0.015), the number of joints with 12 months musculoskeletal pain (β = 0.25 [95%CI 0.15 to 0.36], P < 0.001) positively predicted decreased sleep quality. Manual handling training (β = - 0.48 [95%CI -0.96 to 0.003], P = 0.048) and years of experience (β = - 0.05 [95%CI -0.09 to 0.002], P = 0.039) negatively predicted decreased sleep quality. Nurses reported poor levels of sleep quality, high levels of mental health symptoms, and musculoskeletal pain complaints. Sleep quality among nurses and its predictors should be carefully considered by administrations of healthcare services.
Publisher: IOP Publishing
Date: 12-2022
Abstract: Wheat is the most widely grown food crop, with 761 Mt produced globally in 2020. To meet the expected grain demand by mid-century, wheat breeding strategies must continue to improve upon yield-advancing physiological traits, regardless of climate change impacts. Here, the best performing doubled haploid (DH) crosses with an increased canopy photosynthesis from wheat field experiments in the literature were extrapolated to the global scale with a multi-model ensemble of process-based wheat crop models to estimate global wheat production. The DH field experiments were also used to determine a quantitative relationship between wheat production and solar radiation to estimate genetic yield potential. The multi-model ensemble projected a global annual wheat production of 1050 ± 145 Mt due to the improved canopy photosynthesis, a 37% increase, without expanding cropping area. Achieving this genetic yield potential would meet the lower estimate of the projected grain demand in 2050, albeit with considerable challenges.
Publisher: Elsevier BV
Date: 10-2018
Publisher: Springer Science and Business Media LLC
Date: 12-10-2018
DOI: 10.1038/S41467-018-06525-2
Abstract: Understanding the drivers of yield levels under climate change is required to support adaptation planning and respond to changing production risks. This study uses an ensemble of crop models applied on a spatial grid to quantify the contributions of various climatic drivers to past yield variability in grain maize and winter wheat of European cropping systems (1984–2009) and drivers of climate change impacts to 2050. Results reveal that for the current genotypes and mix of irrigated and rainfed production, climate change would lead to yield losses for grain maize and gains for winter wheat. Across Europe, on average heat stress does not increase for either crop in rainfed systems, while drought stress intensifies for maize only. In low-yielding years, drought stress persists as the main driver of losses for both crops, with elevated CO 2 offering no yield benefit in these years.
Publisher: SAGE Publications
Date: 2020
DOI: 10.33151/AJP.17.860
Abstract: Early cardiopulmonary resuscitation (CPR) is associated with increased survival rates from out-of-hospital cardiac arrest. This aim of this study was to explore the attitudes to CPR among allied health students in Jordan and to compare the attitudes to performing chest compression-only (CC) CPR versus CPR with mouth-to-mouth ventilation (MMV). A cross-sectional study using a 17-item attitude questionnaire that assessed the attitude to CPR in general, and to performing MMV and CC on different patient groups (the other gender, strangers, relatives, children), and despite infection concerns. A total of 856 participants completed the questionnaire (mean age 20.8 years, 74.0% female) 79.2% of participants were willing to learn and practise CPR encouraged by their cultural values and religious beliefs and had a positive attitude towards the benefits of CPR. Compared to MMV, a greater proportion of students had a positive attitude towards performing CC on strangers (71.7% vs 29.6%, p .001), relatives (77.9% vs 40.4, p .001), patients of the other gender (62.3% vs 29.8%, p .001), and despite infection concerns (67.9% vs 24.1%, p .001). Compared to males, a higher proportion of females had a positive attitude about delivering CC to relatives (80.7% vs 70.0%, p=0.004) and despite the infection concerns (71.1% vs 58.7%, p=0.007). Females were more reluctant to perform MMV on males (26.1% vs 40.4%, p=0.02), strangers (25.3% vs 41.7%, p=0.01) and relatives (36.5% vs 51.6%, p=0.01). A large proportion of participants were willing to learn CPR and had positive attitudes towards its benefits. Females were more inclined to perform CC compared to males, whereas males were more likely than females to deliver MMV. More training is recommended, and clear legislation regarding the legal liabilities of rescuers is needed in Jordan.
Publisher: Informa UK Limited
Date: 18-05-2020
Location: United States of America
No related grants have been discovered for Jørgen E. Olesen.