http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Kari A. Peter (검색결과 4 건)
- 무료
- 기관 내 무료
- 유료
-
Kari.A.Peter 한국농약과학회 2022 한국농약과학회 학술발표대회 논문집 Vol.2022 No.11
Bitter rot of apple is a disease of apple fruits caused by fungi in the genus Colletotrichum. Apple growers in the Mid-Atlantic USA have reported increased losses to bitter rot in recent years, necessitating optimized management recommendations. Over 500 apples with bitter rot were obtained from 38 orchards across Pennsylvania, Virginia, Maryland, Delaware, and Ohio. The causal species listed in decreasing order of abundance were identified as C. fioriniae, C. chrysophilum, C. noveboracense, C. siamense, C. fructicola, C. henanense, and C. gloeosporioides sensu stricto, the latter two being first reports. We screened 220 isolates through an initial fungicide sensitivity screen, from which a smaller subsample of isolates was selected and tested to obtain EC50 and EC25 values for a total of 22 fungicide active ingredients from FRAC groups 1, 3, 7, 9, 11, 12, and 29. A few isolates were resistant to FRAC groups 1 and 11 with confirmed β-tubulin E198A and cytochrome-b G143A mutations. With little resistance found, fungicide resistance is unlikely to cause increasing bitter rot incidence. These fungicides varied widely in efficacy within and between FRAC groups, with our Colletotrichum isolates insensitive to many active ingredients. Comparisons of our in vitro results with our field trials and other field trials conducted across the Eastern USA suggested that EC<SUB>25</SUB> values (concentrations that reduce growth by 25%) are better predictors of fungicide efficacy in typical field conditions than EC<SUB>50</SUB> values. With few effective fungicides, application timing is critical for bitter rot management. Spore trapping and quantification of C. fioriniae showed that spores are dispersed in orchards from bud break to leaf drop, indicating spores are present season-long. Experiments of the relative susceptibility of apples to bitter rot throughout the season inadvertently confirmed the importance of temperature and moisture in creating high disease pressure. The most effective fungicides should be applied for optimized bitter rot management before high disease-pressure conditions.
-
Self-Reported Recovery from 2-Week 12-Hour Shift Work Schedules: A 14-Day Follow-Up
Suzanne L. Merkus,Kari Anne Holte,Maaike A. Huysmans,Peter M. van de Ven,Willem van Mechelen,Allard J. van der Beek 한국산업안전공단 산업안전보건연구원 2015 Safety and health at work Vol.6 No.3
Background: Recovery from fatigue is important in maintaining night workers’ health. This study compared the course of self-reported recovery after 2-week 12-hour schedules consisting of either night shifts or swing shifts (i.e., 7 night shifts followed by 7 day shifts) to such schedules consisting of only day work. Methods: Sixty-one male offshore employeesd20 night workers, 16 swing shift workers, and 25 day workersdrated six questions on fatigue (sleep quality, feeling rested, physical and mental fatigue, and energy levels; scale 1e11) for 14 days after an offshore tour. After the two night-work schedules, differences on the 1st day (main effects) and differences during the follow-up (interaction effects) were compared to day work with generalized estimating equations analysis. Results: After adjustment for confounders, significant main effects were found for sleep quality for night workers (1.41, 95% confidence interval 1.05e1.89) and swing shift workers (1.42, 95% confidence interval 1.03e1.94) when compared to day workers; their interaction terms were not statistically significant. For the remaining fatigue outcomes, no statistically significant main or interaction effects were found. Conclusion: After 2-week 12-hour night and swing shifts, only the course for sleep quality differed from that of day work. Sleep quality was poorer for night and swing shift workers on the 1st day off and remained poorer for the 14-day follow-up. This showed that while working at night had no effect on feeling rested, tiredness, and energy levels, it had a relatively long-lasting effect on sleep quality.
-
Self-Reported Recovery from 2-Week 12-Hour Shift Work Schedules: A 14-Day Follow-Up
Merkus, Suzanne L.,Holte, Kari Anne,Huysmans, Maaike A.,van de Ven, Peter M.,van Mechelen, Willem,van der Beek, Allard J. Occupational Safety and Health Research Institute 2015 Safety and health at work Vol.6 No.3
Background: Recovery from fatigue is important in maintaining night workers' health. This study compared the course of self-reported recovery after 2-week 12-hour schedules consisting of either night shifts or swing shifts (i.e., 7 night shifts followed by 7 day shifts) to such schedules consisting of only day work. Methods: Sixty-one male offshore employees-20 night workers, 16 swing shift workers, and 25 day workers-rated six questions on fatigue (sleep quality, feeling rested, physical and mental fatigue, and energy levels; scale 1-11) for 14 days after an offshore tour. After the two night-work schedules, differences on the $1^{st}$ day (main effects) and differences during the follow-up (interaction effects) were compared to day work with generalized estimating equations analysis. Results: After adjustment for confounders, significant main effects were found for sleep quality for night workers (1.41, 95% confidence interval 1.05-1.89) and swing shift workers (1.42, 95% confidence interval 1.03-1.94) when compared to day workers; their interaction terms were not statistically significant. For the remaining fatigue outcomes, no statistically significant main or interaction effects were found. Conclusion: After 2-week 12-hour night and swing shifts, only the course for sleep quality differed from that of day work. Sleep quality was poorer for night and swing shift workers on the $1^{st}$ day off and remained poorer for the 14-day follow-up. This showed that while working at night had no effect on feeling rested, tiredness, and energy levels, it had a relatively long-lasting effect on sleep quality.
-
The Rapid Apple Decline Phenomenon: Current Status and Expected Associated Factors in Korea
Seung-Yeol Lee,Kari A. Peter,Kallol Das,Avalos-Ruiz Diane,정희영 한국식물병리학회 2023 Plant Pathology Journal Vol.39 No.6
Rapid apple decline (RAD) is a complex phenomenon affecting cultivated apple trees and particularly dwarf rootstocks on grafted young apple trees. Since its first appearance in the United States, RAD has been reported worldwide, for example in Canada, South America, Africa, and Asia. The phenomenon has also been observed in apple orchards in Korea, and it presented similar symptoms regardless of apple cultivar and cultivation period. Most previous reports have suggested that RAD may be associated with multiple factors, including plant pathogenic infections, abiotic stresses, environmental conditions, and the susceptibility of trees to cold injury during winter. However, RAD was observed to be more severe and affect more frequently apple trees on the Malling series dwarf rootstock. In this study, we reviewed the current status of RAD worldwide and surveyed biotic and abiotic factors that are potentially closely related to it in Korea.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
