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방글라데시, 캄보디아, 태국, 베트남 벼 포장에서 멸구류 3종의 발생 양상
박부용,이상구,박홍현,전성욱,정인홍,박세근,Md. M. Hossain,C. Sovandeth,W. Rattanakarn,P. T. Vuong,H. V. Chien 한국유기농업학회 2018 韓國有機農業學會誌 Vol.26 No.3
AFACI 회원국 4개국의 수도작 포장의 멸구류 발생 양상을 조사하기 위해서 황색 점착트랩을 이용하여 타락법으로 멸구류 발생 모니터링을 수행하였다. 전반적으로 모든 조사 지점에서 벼멸구의 발생량이 많았으며 상대적으로 흰등멸구의 발생량은 적은 편이었다. 애멸구의 발생은 없었다. 분얼기부터 호숙기까지 벼 멸구류의 발생량은 지속적으로 증가하였으며, 한국의 경우와 다르게 1~2회의 발생 최성기(Peak)가 나타나지 않았다 벼멸구의 경우 모든 조사 지점에서 발생하였으며 스리랑카의 Svay Reang에서 조사기간 동안 평균 1,673마리로 가장 많이 발생하였으며 방글라데시의 Dobila, Hamkuria, 남베트남의 Cho Gao가 각각 1,236마리, 818마리, 666마리 순이었다. 흰등멸구의 경우 조사지점 간 편차가 크게 나타났는데 방글라데시의 Dobila에서는 조사기간 동안 평균 1,163마리가 발생하였으나 남베트남에서는 거의 발생하지 않았다. Rural Development Administration (RDA) is promoting the AFACI IPM (Asian Food & Agricultural Cooperation Initiative program). AFACI consist of 12 countries including Bangladesh, Cambodia, Thailand, Vietnam and so on. The main goal of the AFACI IPM project is ‘Establishment of an international cooperative network for the best management of migratory rice planthoppers and setting database of pests occurrence information. As a result of the suvey, Planthoppers were increasing all the way from tillering stage to ripe stage and do not appear to be peak of one or two like korea case. In detail, 1,673 of BPH (Nilaparvata lugens) occurred in survey site of Svay Reang, Cambodia, followed by 1.237 at Dobila, Bangladesh. In the case of White backed planthopper (Sogatella furcifera), 1,163 of WBPH occurred in survey site of Dobila, Bangladesh and 849 WBPH were collected at Hamkuria, Bangladesh. It is expected to verify the occurrence and movement patterns of hoppers among member countries in the future.
C.T. Hsieh,M.W. Lin,C.L. Chang,Y.C. Ho,S.Y. Chen,J. Wang,M.C. Chou,J.Y. Lin,C.H. Pai,P.H. Lin,L.C. Tai,S.H. Chen,G.Y. Tsaur,C.C. Kuo,T.Y. Chien 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.53 No.6
A general method for fabricating transient plasma structures with high-intensity laser pulses is developed to gain fine control over laser-plasma interactions. These structures have been used as programmable photonic devices in the development of laser-wakefield accelerators, soft X-ray lasers and plasma nonlinear optics driven by multi-terawatt laser pulses. Plasma ramps are used to control electron injection in laser-wakefield accelerators, plasma waveguides are used to enhance the efficiency of soft X-ray lasers by orders of magnitude and periodic plasma structures are used to achieve quasi-phase matching in relativistic harmonic generation. By scanning the interaction length with the same plasma-fabrication method, tomographic measurements are carried out to resolve the injection/acceleration process in laser-wakefield accelerators and amplification processes in X-ray lasers and relativistic harmonic generation. A theoretical analysis and a computer simulation are also carried out to provide insightful pictures of these processes. These research works show that by controlling plasma structures with optical fabrication methods, laser-plasma interaction can be engineered to expand and enrich the frontier of high-field physics.
C. S. Yang,K. F. Chien,J. Y. Lai,C. W. Luo,W. C. Chou,Y. T. Shih,J. S. Wang,S. R. Jian 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.53 No.5
Self-assembled CdTe/ZnSe Stranski-Krastanow quantum-dot (QD) structures, which have a CdSe-like precursor-layer (PCL) between CdTe quantum dots and ZnSe matrix, were grown by molecular beam epitaxy. The carrier dynamics of the structures was studied by photoluminescence (PL) and time-resolved photoluminescence (TRPL) measurements. The temperature-dependent PL spectra revealed that there is a carrier transformation from small dots to larger dots via the precursor layer. Temperature-dependent PL measurements verify the existence of the QD excited excitonic state in 5.0 mono-layer (ML) coverage. In 0.6 ML coverage, the TRPL spectra exhibited a double-exponential decay process, as the detection energy at PCL emission energy. The faster decay time is corresponded to the carrier lifetime in PCL, the slower decay time exhibits the carrier in small QD. However, in 5.0 ML coverage, a faster and slower decay time represents the carrier lifetime in QD excited state for larger QD and the carrier lifetime in QD ground state for smaller QD.
Clare C.W. Yu,Chun T. Au,Frank Y.F. Lee,Raymond C.H. So,John P.S. Wong,Gary Y.K. Mak,Eric P. Chien,Alison M. McManus 한국산업안전공단 산업안전보건연구원 2015 Safety and health at work Vol.6 No.3
Background: Overweight, obesity, and cardiovascular disease risk factors are prevalent among firefighters in some developed countries. It is unclear whether physical activity and cardiopulmonary fitness reduce cardiovascular disease risk and the cardiovascular workload at work in firefighters. The present study investigated the relationship between leisure-time physical activity, cardiopulmonary fitness, cardiovascular disease risk factors, and cardiovascular workload at work in firefighters in Hong Kong. Methods: Male firefighters (n ¼ 387) were randomly selected from serving firefighters in Hong Kong (n ¼ 5,370) for the assessment of cardiovascular disease risk factors (obesity, hypertension, diabetes mellitus, dyslipidemia, smoking, known cardiovascular diseases). One-third (Target Group) were randomly selected for the assessment of off-duty leisure-time physical activity using the short version of the International Physical Activity Questionnaire. Maximal oxygen uptake was assessed, as well as cardiovascular workload using heart rate monitoring for each firefighter for four “normal” 24-hour working shifts and during real-situation simulated scenarios. Results: Overall, 33.9% of the firefighters had at least two cardiovascular disease risk factors. In the Target Group, firefighters who had higher leisure-time physical activity had a lower resting heart rate and a lower average working heart rate, and spent a smaller proportion of time working at a moderateintensity cardiovascular workload. Firefighters who had moderate aerobic fitness and high leisuretime physical activity had a lower peak working heart rate during the mountain rescue scenario compared with firefighters who had low leisure-time physical activities. Conclusion: Leisure-time physical activity conferred significant benefits during job tasks of moderate cardiovascular workload in firefighters in Hong Kong.
AN EXPERIMENTAL STUDY ON THE PERFORMANCE OF RADIANT FLOOR COOLING MODULES
K. C. CHIEN,Y. K. CHUAH,W. T. CHANG 대한설비공학회 2013 International Journal Of Air-Conditioning and Refr Vol.21 No.2
This study investigates experimentally the performance of radiant °oor cooling modules. Di®erent radiant cooling modular units with embedded chilled water piping were tested for cooling performance. The e®ects of pipe pitch and also the e®ects of extended ¯ns were tested. The results of the experiments show that the modular design of radiant °oor used has low heat resistance between the chilled water and the radiant cooling surface. Mean radiant temperature was analyzed to measure the cooling comfort performance. An increase of radiant cooling surface area was found to be important for e®ective radiant heat exchange. Moreover, the larger the temperature di®erence between the radiant surface and the walls, higher rate of radiant cooling can be achieved. The cooling intensity in terms of per unit area was tested to be as high as 60W/m2. In conclusion the radiant °oor cooling modular units are e®ective to remove sensible heat and provide comfort cooling. In practice it can be supplemented with lower humidity outdoor air supply for the removal of latent heat.
Yu, Clare C.W.,Au, Chun T.,Lee, Frank Y.F.,So, Raymond C.H.,Wong, John P.S.,Mak, Gary Y.K.,Chien, Eric P.,McManus, Alison M. Occupational Safety and Health Research Institute 2015 Safety and health at work Vol.6 No.3
Background: Overweight, obesity, and cardiovascular disease risk factors are prevalent among firefighters in some developed countries. It is unclear whether physical activity and cardiopulmonary fitness reduce cardiovascular disease risk and the cardiovascular workload at work in firefighters. The present study investigated the relationship between leisure-time physical activity, cardiopulmonary fitness, cardiovascular disease risk factors, and cardiovascular workload at work in firefighters in Hong Kong. Methods: Male firefighters (n = 387) were randomly selected from serving firefighters in Hong Kong (n = 5,370) for the assessment of cardiovascular disease risk factors (obesity, hypertension, diabetes mellitus, dyslipidemia, smoking, known cardiovascular diseases). One-third (Target Group) were randomly selected for the assessment of off-duty leisure-time physical activity using the short version of the International Physical Activity Questionnaire. Maximal oxygen uptake was assessed, as well as cardiovascular workload using heart rate monitoring for each firefighter for four "normal" 24-hour working shifts and during real-situation simulated scenarios. Results: Overall, 33.9% of the firefighters had at least two cardiovascular disease risk factors. In the Target Group, firefighters who had higher leisure-time physical activity had a lower resting heart rate and a lower average working heart rate, and spent a smaller proportion of time working at a moderate-intensity cardiovascular workload. Firefighters who had moderate aerobic fitness and high leisure-time physical activity had a lower peak working heart rate during the mountain rescue scenario compared with firefighters who had low leisure-time physical activities. Conclusion: Leisure-time physical activity conferred significant benefits during job tasks of moderate cardiovascular workload in firefighters in Hong Kong.
Cho, Yoon Shin,Chen, Chien-Hsiun,Hu, Cheng,Long, Jirong,Hee Ong, Rick Twee,Sim, Xueling,Takeuchi, Fumihiko,Wu, Ying,Go, Min Jin,Yamauchi, Toshimasa,Chang, Yi-Cheng,Kwak, Soo Heon,Ma, Ronald C W,Yamamo Nature Publishing Group, a division of Macmillan P 2012 Nature genetics Vol.44 No.1
We conducted a three-stage genetic study to identify susceptibility loci for type 2 diabetes (T2D) in east Asian populations. We followed our stage 1 meta-analysis of eight T2D genome-wide association studies (6,952 cases with T2D and 11,865 controls) with a stage 2 in silico replication analysis (5,843 cases and 4,574 controls) and a stage 3 de novo replication analysis (12,284 cases and 13,172 controls). The combined analysis identified eight new T2D loci reaching genome-wide significance, which mapped in or near GLIS3, PEPD, FITM2-R3HDML-HNF4A, KCNK16, MAEA, GCC1-PAX4, PSMD6 and ZFAND3. GLIS3, which is involved in pancreatic beta cell development and insulin gene expression, is known for its association with fasting glucose levels. The evidence of an association with T2D for PEPD and HNF4A has been shown in previous studies. KCNK16 may regulate glucose-dependent insulin secretion in the pancreas. These findings, derived from an east Asian population, provide new perspectives on the etiology of T2D.