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Considering Insecticide Resistance to Insecticides
Siwoo Lee,Sang-Guei Lee,Chang-Gyu Park,Kwang-Ho Kim,Hong-Hyun Park 한국응용곤충학회 2010 한국응용곤충학회 학술대회논문집 Vol.2010 No.05
Insecticide resistance development of insect pests is one of the main threatening factors against stable crop production and keeping human life safe from insect pest disease vector. To know properties of insecticides resistance is very important to develop a management program against insecticide resistance pests. Insecticide resistance development is an event of evolutionary process. We have to deal with insecticide resistance of insect pests by interaction between insecticide and insect pests in their chemical, physical and biological environment. We can glimpse at and infer the evolutionary process of insects from investigating and comparing the resistance level of insect pests to insecticides. Huge amount and many kinds of insecticides have been sprayed to control insect pests. Development of insecticide resistance of insect such as housefly and mosquito, known as most common medical insect, is a result of adaptation to environment covered with insecticides. We can easily assume that the amount and kind of insecticides sprayed the evolutionary force to the diversity of insecticide resistance. The resistance diversity will be very good character of good markers for determining geographical isolation.
실사고 데이터를 이용한 EES에 따른 인체상해도 경향성 분석
이승상(Seungsang Lee),송영준(Youngjun Song),윤영한(Younghan Youn),이재완(Jaewan Lee),김시우(Siwoo Kim),이강현(Kanghyun Lee),이희영(Heeyoung Lee) 한국자동차공학회 2014 한국자동차공학회 부문종합 학술대회 Vol.2014 No.5
Currently frontal crash safety evaluation is conducted by crashing a vehicle against a rigid barrier in Korea. It evaluate crash performance of a vehicle in a barrier test in terms of vehicle stiffness and strength. But this method is basic test. Probably, This test isn’t matched in Real World Crash Collision about occupant injury. So The availability of in-depth accident data is prerequisite for each efficient traffic safety management system. In this study, As using photo modeler program, It finds out relationship between occupant injury based on AIS and Estimated Energy Equivalent Speed in the real world in-depth accident data and compares crashing a vehicle test against a rigid barrier by using Madymo to Estimated Energy Equivalent Speed in the Real World in-depth accident data. Using Real World in-depth accident data is essential part of improving vehicle safety and reduction of traffic fatality in Korea.
Lee, Soojin,Yu, Jun-Sang,Lee, Siwoo KOREAN PHARMACOPUNCTURE INSTITUTE 2015 Journal of pharmacopuncture Vol.18 No.4
Objectives: The purpose of this study was to investigate the psychological characteristics of the Sasang constitutions by using Braverman nature assessment (BNA). Methods: One hundred seventy-four students participated in this study, and among them, the 142 individuals who had clearly identified Sasang constitutional types were used for the analysis. Sasang constitutions and the Braverman temperaments of the subjects were determined by using a questionnaire for the Sasang constitution classification (QSCC) II and BNA, respectively. Body mass index (BMI) was used to compare the inclinations of the Sasang constitutions and Braverman temperament types. Results: Significant differences in Braverman temperament type existed among the Sasang constitutions (P = 0.042), and the relations between Soyangin and the dopamine type and between Taeeumin and the gamma-aminobutyric acid (GABA) type were meaningful. Significant differences were also shown in the comparison with the Yin and the Yang constitutions (P = 0.017), and the post-hoc analysis showed a strong and significant relation between the Yang constitution and the dopamine type and between the Yin constitution and the GABA type. The one-way analysis of variance (ANOVA) and the independent t-test were conducted to examine the BMI and the degree of obesity among the Sasang constitutions and the Braverman temperament types. Concerning the BMI, Taeeumin showed a bigger BMI than the other constitutions (P < 0.001), but no significant differences in the BMI were observed between the Braverman temperament types. Conclusion: Soyangin has a close relationship to the dopamine type and Taeeumin has a close relationship to the GABA type. The correlation between two types were more clear when the Yin and the Yang types were compared to Braverman temperaments. These results may serve as a basis for identifying the psychological traits of Sasang constitutional types, especially in regard to the characteristics related to the four Braverman temperament types.
Physiological indices for the categorization of Mibyeong severity
Lee, Kyung Eun,Kim, Joong Jae,Jin, Hee-Jeong,Lee, Siwoo,Shim, Eun Bo Elsevier Science B.V., Amsterdam 2017 Integrative medicine research Vol. No.
<P><B>Background</B></P><P>Individuals with Mibyeong are difficult to identify. Although extensive research has attempted to introduce an easy and clear method for Mibyeong diagnosis, the indices used to categorize Mibyeong severity are unclear. We hypothesized that individuals with severe Mibyeong have reduced physiological function, thus activating homeostatic regulatory functions and inducing alterations in vascular resistance and capacitance.</P><P><B>Methods</B></P><P>Novel indices used to categorize Mibyeong severity based on the cardiovascular system model are described. We analyzed resistance and capacitance values using a simple cardiovascular system model optimally satisfying the measured systolic and diastolic pressures, heart rate, and age.</P><P><B>Results</B></P><P>Clinical data from 509 individuals were examined to test our hypothesis. A statistical analysis revealed that the vascular resistance was lower in individuals with severe Mibyeong symptoms and decreased with increasing Mibyeong severity, whereas the vascular capacitance showed an opposite trend.</P><P><B>Conclusion</B></P><P>We derived indices to categorize Mibyeong severity and tested 509 individuals. An epidemiological analysis revealed that the vascular resistance decreased while the capacitance increased with increasing Mibyeong severity, indicating the validity of the values as Mibyeong indices.</P>
Insecticide Resistance Differences by Carbofuran Application Methods
Siwoo Lee,Jin-Kyo Jung,Bo-Yoon Seo,Chang-Gyu Park 한국응용곤충학회 2018 한국응용곤충학회 학술대회논문집 Vol.2018 No.04
Toxicities of Carbofuran showed different patterns by three application methods, Drench(as systemic effect), Leaf dipping(as contact and systemic effects) and Topical(as contact effect) applications. LC50 dropping pattern was L-shape in Drench, low slope line in Topical and intermediate of them in Leaf dipping. Drench application was the most Carbofuran treatment method to Brown planthoppers. Dropping patterns of LC50 were almost same between resistant and susceptible strains. The checking time of Carbofuran toxicity was suggested to be 2nd day after application by SD analysis of mortality. Resistance ratios were peak on 3rd day after application in Drench, 4th day(Susceptible) and 5th day(Resistant) in Leaf dipping and showed steady increase line pattern in Topical application.
The Benefits of NavienTM Intracranial Support Catheter for Endovascular Treatment
Siwoo Lee,Tae-Sik Gong,Yong-Woo Lee,Hyo-Joon Kim,Chang-young Kweon 대한뇌혈관외과학회 2016 Journal of Cerebrovascular and Endovascular Neuros Vol.18 No.3
Objective : Endovascular treatment is one of the most important treatments along with open craniotomy for cerebrovascular surgery. The successful treatment of endovascular disease relies on appropriate instruments and the surgeon's skill. Endovascular treatment needs to provide safe and stable access to the catheter cavity. Additionally, it is important to maintain a round shape without changing to an oval shape. The catheter for endovascular treatment has to be flexible and accommodate at least 0.027 inches of inner diameter. The 6-Fr NavienTM Intracranial Support Catheter (formerly the ReFlex Intracranial Catheter; Covidien Vascular Therapies, Mansfield, MA, USA) provides 0.072 inches of inner diameter. Materials and Methods : We reviewed 61 cases for 56 cases of endovascular treatment with a Navien catheter. A triaxial system was used for all procedures with femoral arterial access. The Navien catheter was placed in the petrous segment of the internal carotid artery or third segment of the vertebral artery. The patients had various shapes of intracranial arteries, including tortuous vessels. Results : The Navien catheter was used for 61 cases of endovascular treatment. We had 59 cases of coil embolization at unruptured and ruptured aneurysms and two cases of stent insertion into the middle cerebral artery. All the cases were successful without any catheter-related complications. Conclusion : The Navien catheter is a recently developed catheter that has several strengths compared with previously developed catheters. It provides a more stable environment for endovascular treatment. It provides a cavity sufficient for endovascular treatment devices. Additionally, it is sufficiently flexible to approach tortuous vessels.
Lee, Hyeon-Sook,Lee, Siwoo,Park, Sohee,Baek, Younghwa,Youn, Ji-Hye,Cho, Dan Bee,Jin, Jung-Hyun,Shin, Aesun,Park, Sue K.,Kang, Keon Wook,Lim, Young-Khi,Kang, Chul Hwan,Yoo, Keun-Young,Ko, Kwang-Pil Kluwer 2018 QUALITY OF LIFE RESEARCH Vol.27 No.3
<P>Our study suggests that somatic and psychological discomfort symptoms are associated with HRQOL. The main factors related to HRQOL vary according to age and large prospective studies and clinical trials are needed to clarify the association between specific symptoms and HRQOL according to the age.</P>