This paper descibes a study that shows that glycogen-lowering exercise, performed the evening before an exercise bout in combination with glycogen restriction leads to a reduction of the oxidation rate of ingested glucose during moderate-intensity exercise
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This letter to the editor argues that the assumption of a single value for the acetate recovery factor in carbon-13 stable isotope research for different individuals, can lead to significant errors in the outcomes of substrate utilization measurements.
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CC-BYNatural ventilation has been used widely in buildings to deliver a healthy and comfortable indoor environment for occupants. It also reduces the consumption of energy in the built environment and dilutes the concentration of carbon dioxide. Various methods and techniques have been used to evaluate and predict indoor airspeed and patterns in buildings. However, few studies have been implemented to investigate the relevant methods and tools for the evaluation of ventilation performance in indoor and outdoor spaces. The current study aims to review available methods, identifying reliable ones to apply in future research. This study investigates scientific databases and compares the advantages and drawbacks of methods including analytical models, empirical models, zonal models, and CFD models. wind-driven ventilation; analytical models; experimental models; zonal models; computational fluid dynamics (CFD) models; numerical discretization methods https://www.mdpi.com/2071-1050/13/22/12721Sustainability 2021, 13(22), 12721
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For the future circular economy, renewable carbon feedstocks manifest considerable promise for synthesizing sustainable and biodegradable polyhydroxyalkanoate (PHA). In this study, 16 wt% and 30 wt% PHA (cell dry weight) are respectively produced by thermophilic Caldimonas thermodepolymerans from beechwood xylan and wheat arabinoxylan as the sole carbon source. Moreover, an in silico study of the potential xylan-degrading proteins was conducted using proteome sequencing and CAZyme specialized bioinformatic tools. This study demonstrates the feasibility of utilizing complex polysaccharide substrates for PHA biosynthesis, thereby potentially eliminate additional processing steps and reducing overall production costs for sustainable plastic.
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Objective: In myocardial perfusion single-photon emission computed tomography (SPECT), abdominal activity often interferes with the evaluation of perfusion in the inferior wall, especially after pharmacological stress. In this randomized study, we examined the effect of carbonated water intake versus still water intake on the quality of images obtained during myocardial perfusion images (MPI) studies. Methods: A total of 467 MIBI studies were randomized into a carbonated water group and a water group. The presence of intestinal activity adjacent to the inferior wall was evaluated by two observers. Furthermore, a semiquantitative analysis was performed in the adenosine subgroup,using a count ratio of the inferior myocardial wall and adjacent abdominal activity. Results: The need for repeated SPECT in the adenosine studies was 5.3 % in the carbonated water group versus 19.4 % in the still water group (p = 0.019). The inferior wall-to-abdomen count ratio was significantly higher in the carbonated water group compared to the still water group (2.11 ± 1.00 vs. 1.72 ± 0.73, p\0.001). The effect of carbonated water during rest and after exercise was not significant. Conclusions: This randomized study showed that carbonated water significantly reduced the interference of extra-cardiac activity in adenosine SPECT MPI. Keywords: Extra-cardiac radioactivity, Myocardial SPECT, Image quality enhancement, Carbonated water
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Factsheet Parlement en Wetenschap: Deze factsheet is tot stand gekomen in het kader van de samenwerking tussen de Tweede Kamer, de KNAW, NWO, VSNU en de jonge Akademie
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Studenten en bedrijfsleven roepen het hoger onderwijs op duurzaamheid prominent in het curriculum op te nemen. Dit artikel is een verkenning van de raakvlakken tussen economie en duurzaamheid met als doel thema’s te benoemen die in het curriculum van de opleidingen bedrijfseconomie en accountancy aan bod zouden kunnen komen. Er wordt eerst stilgestaan bij een beschrijving van de op ons afkomende problemen zoals klimaatverandering, grondstoffenschaarste en verlies aan biodiversiteit. Vervolgens wordt geschetst voor welke uitdagingen het bedrijfsleven staat en worden ontwikkelingen geschetst op macro-, meso- en microniveau. Afsluitend volgen suggesties voor op te nemen thema’s in het curriculum van de bedrijfseconomische en accountancy opleiding, zoals bijvoorbeeld een verdieping in de bestudering van verdelingsmechanismen (markt versus overheid), verbreding van het kostenbegrip, strategisch risicomanagement dat rekening houdt met duurzaamheid, duurzaamheidsverslaggeving en ketenmanagement. Het tot stand brengen van een duurzame economie vraagt daarnaast om buiten bestaande denkkaders te treden.
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De CO2-emissie door productie van elektriciteit daalt flink. Verdere verlaging is gewenst, maar dan moeten we wél aan de slag
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