http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
이인석,김지혜 한국안전학회 2012 한국안전학회지 Vol.26 No.6
A survey was carried out to understand and analyze the characteristics of the symptoms of musculoskeletal disorders among farmers of pears, grapes, cucumbers, eggplants and various vegetables. One hundred and forty farmers participated in the study. It was found that task characteristics differ according to crops and the gender of the farmers. The fruits farmers mainly assume arm-elevated postures while vegetables farmers mostly take bent-back or squatting postures. The symptoms of musculoskeletal disorders are mostly reported in the low back, shoulder, and knee. Though the rates of symptoms of musculoskeletal disorders were not much different among the crops, the fruits farmers showed relatively higher rate of symptoms in the shoulder and neck than those of other crops. The rate of symptoms of female farmers was higher than that of male farmers, which is the similar results of other studies. The relatively low correlationship between the task characteristics and the rate of symptomes might be caused by the fact that most farmers are involved in various agricultural tasks that are not much different among different crops
Network approaches to the genetic dissection of phenotypes in animals and humans
이인석 한국통합생물학회 2013 Animal cells and systems Vol.17 No.2
Various genome-wide approaches to identifying the genetic components that underlie phenotypes in animals and humans have been developed during the last several decades. The relationship between gene and phenotype, however,cannot be represented by a simple one-to-one correspondence. Rather, many genes are typically related to a single phenotype and many phenotypes can be associated with a single gene, a major theme within the study of complex phenotypes. Therefore, to dissect the genetics of complex phenotypes, one must not only identify the genetic components involved but also the relationships between genes. To fulfill this new goal in modern genetics, the field of network science has recently tackled the complexity of phenotypes. There are various types of gene networks, which are defined by their differential representation of network edges (i.e., relationships). Different networks map physical,genetic, functional, and regulatory interactions between genes. Gene networks can be constructed using a wide variety of experimental and computational methods, which provide complimentary information about the genetic organization of phenotypes. The predictive power of a gene network is further augmented via integration with functional genomics or genetics data, including expression, loss-of-function, or chromosomal interval or nucleotide position data associated with a phenotype. Although the field of network-based genetics has made phenomenal progress during the last decade, many limitations, such as the completeness and dynamicity of gene networks, must still be overcome.
Effect of KNO3 Priming on Various Properties of Kenaf Seed under Non-Saline and Saline Conditions
이인석,강찬호,이기권 한국작물학회 2017 Korean journal of crop science Vol.62 No.4
The main objective of this study was to increase the germination percentage of kenaf seeds with less number of times under non-saline and saline conditions. Therefore, the first goal was to assess the response of kenaf seeds to NaCl. The second goal was to evaluate the effects of KNO3 on kenaf seed germination. The germination percentage exhibited a decreasing tendency in germination rate. Plant dry weight was approximately 0.2 g in all treatments at 5 days after germination. As time passed, the electrical conductivity (EC) value of hydro-priming (HP) consistently increased by 8.7 mS/cm at 24 hours of immersion. However, seeds primed with KNO3 showed no difference in EC values even as times passed. Regarding the priming effect, priming in 100 mM KNO3 concentration for 12 hours increased germination up to 85% in H20 solution and in 0 mM KNO3 concentration upto 73.8% under 0.3% NaCl solution, compared to that of Control. Germination synchronization, shoot length, and leaf unfolding of primed seeds were greater than those of the Control. In addition, main root and hair roots appeared more rapidly in the treated seeds and were more abundant compared to that of the Control. The T50 (times to reach 50% of the final germination percentage) of the Control in both H20 and 0.3% NaCl solutions was 18 and 22 hours, respectively. However, when treated KNO3 priming (0 to 100 mM) in H20 and 0.3% NaCl solution, 9 hours was sufficient to reach T50. Primed (hydro-priming and KNO3) seeds had a lower MDG (mean days untill germination; 0.6-0.62) compared to that of the Control (1.13-1.31) in H20 and 0.3% NaCl solutions. Regarding dry weight of plants after priming, an increasing tendency after the priming treatment in the H20 solution was observed. Furthermore, no significant difference in plant dry weight under 0.3% NaCl stress was observed between the Control and primed seeds. Taken together, the results suggest that 50-100 mM KNO3 priming for 24 hours optimize seed germination rate in less number of times of exposure with great vigor. Therefore, it is recommended for kenaf seed invigoration before planting.