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Instructor stress, depression and anxiety at the beginning of the educational calendar year through the COVID-19 widespread.
ns.With regard to an inland nuclear power plant bordered by a reservoir, a major concern was that fresh water might be polluted and the human body might be radiation exposed due to the discharge of liquid radioactive effluents. In contrast to other radionuclides in the effluents, tritium has specific dispersion behavior in the aquatic environment such as emission into the air along with water evaporation. Further, the evaporated tritium in the air could go toward the territorial system where the wind blows. As a result, the person staying in the vicinity of the plant discharge point would be exposed with an additional radiation dose. In light of this characteristic, this study first introduced this new exposure pathway and investigated the additional radiation dose on the basis of a hypothetical reservoir. The results indicated that annual tritium evaporation fraction is approximately 2.5%, which is a comparable level with the radioactive decay factor. This would produce an additional radiation dose of 0.63 μSv/a to a person staying 50 m away from the plant discharge point for the case of 1 g/a tritium discharge. Tritium evaporation effects could be decreased through controlling the discharge depth. Thus, a preliminary suggestion to adopt a deep discharge instead of surface discharge was proposed from the ALARA (as low as reasonably achievable) criterion of radiation protection.
To evaluate sleep duration in a representative sample of preschoolers and examine the relationships between screen time and use of different electronic media devices with sleep duration and social jetlag.

2903 preschoolers were included. Parent-completed questionnaire provided information on socioeconomic status, electronic media use of the children and sleep patterns of both parents and children. Preschoolers were divided according to whether they met the international screen time recommendations for their age. Comparisons between the two groups in various sleep measures and effects of different devices on sleep were evaluated.

40% of preschoolers in our cohort did not achieve the recommended sleep duration. Subjects who adhered to the screen time recommendations were from families of higher socioeconomic status, had longer sleep duration and better sleep habits. Each hour increase on portable electronic device use was associated with 11 (95%CI-15 to-6) and 6 (95%CI-10 to-2) minutes less of average daily sleep duration in boys and girls, respectively. Every additional hour of non-portable electronic devices use was associated with 3min shift in social jetlag in boys. Presence of electronic devices in bedroom and their use at bedtime increased risk of social jetlag in boys with an OR of 1.40 (95%CI 1.01 to 1.92) and 1.39 (95%CI 1.00 to 1.95) respectively.

A significant proportion of preschoolers does not obtain the recommended amount of sleep. Screen time in preschoolers affects not only sleep duration but also leads to circadian discrepancy.
A significant proportion of preschoolers does not obtain the recommended amount of sleep. Screen time in preschoolers affects not only sleep duration but also leads to circadian discrepancy.
Obstructive sleep apnea (OSA) is a modifiable risk factor for stroke, but there are limited data on which stroke subtypes are associated with OSA. The aim of this study was to assess the risk for wake-up stroke (WUS) associated with OSA according to each etiologic subtype to elucidate the pathophysiologic mechanism of OSA-associated stroke.

We investigated 557 consecutive patients who were admitted with acute ischemic stroke in two regional comprehensive stroke centers using a standardized protocol including the Berlin questionnaire to identify symptoms of OSA prior to stroke. The collected stroke data included the time of onset, risk factors, and etiologic subtype. Stratified analysis according to sex was conducted because sex has been reported to be an effect modifier of OSA on cardiovascular outcomes. The association between preexisting OSA symptoms and WUS depending on etiologic subtypes was assessed using multivariate logistic regression analysis.

Preexisting OSA symptoms were associated with the risk of overall WUS in men. learn more Snoring was associated with WUS in large artery atherosclerosis [adjusted odds ratio, 2.67 (1.15-6.23)], and apnea was associated with WUS in small vessel occlusion [adjusted odds ratio, 8.21 (1.15-58.53)], whereas OSA symptoms were not significantly associated with WUS in cardioembolism. Associations between OSA and WUS were not found in women.

This study demonstrated the differential influences of OSA on WUS depending on etiologic subtypes, suggesting more vulnerability in large artery atherosclerosis and small vessel occlusion. Sex is a significant effect modifier of the association between OSA and WUS.
This study demonstrated the differential influences of OSA on WUS depending on etiologic subtypes, suggesting more vulnerability in large artery atherosclerosis and small vessel occlusion. Sex is a significant effect modifier of the association between OSA and WUS.Tannins are compounds able to form complexes with proteins limiting their ruminal degradation and thus the synthesis of some odour-active compounds may be inhibited. Tannins are broadly divided in condensed tannins (CT) and hydrolysable tannins (HT). The study aimed to assess the influence of dietary inclusion of three commercial tannin extracts, namely mimosa (Acacia mearnsii; CT), chestnut (Castanea sativa; HT) or tara (Caesalpinia spinosa; HT) on volatile profile and flavour of meat and kidney fat from lambs. Comisana male lambs were divided into four groups (n = 9 each) and fed for 75 days with a concentrate-based diet (CON) or CON supplemented with 4% of one of the tannin extracts. Tannins reduced "pastoral" odour in perirenal fat of lambs the meat of which was characterized by a very low perception of this attribute. It may be assumed that p-cresol and 8-methylnonanoic acid mostly contributed to "pastoral" odour expression in the diet without condensed or hydrolysable tannins.This study defined the pH threshold for dark cutting beef of Asian consumers using a web-based survey and examined their preferences for beef appearance. Ninety individual images of beef steaks with different pH values were randomly selected to be scored by 4322 respondents. Gender, age and beef eating habits of respondents were found to impact on color preferences. With respondent's visual score of 4 set as the acceptance threshold, linear regression analysis between visual scores and beef instrumental colorimetrics, showed that the acceptance thresholds of instrumental color values were L* ≥ 31.4, a* ≥ 16.4, b* ≥ 6.5, chroma ≥17.4 and hue ≥22.5. These corresponded to pH threshold values of 6.11, 6.20, 6.28, 6.25 and 6.29, respectively. This pH benchmark (6.11 to 6.29) for dark cutters is higher than pH thresholds applied in most countries, indicating that Asian consumers prefer darker meat than expected, however, the likely tenderness of beef with pH's at this level merits consideration.
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