Operating Method based on Performance Prediction of Hybrid Geothermal Heat Pump System

Jihyun Shin(신지현),Younghum Cho(조영흠) 한국태양에너지학회 2021 한국태양에너지학회 학술대회논문집 Vol.2021 No.5

A study of risk factors for the possible cases of acute occupational pesticide poisoning of orchard farmers in some parts of south Chungcheong province

Jihyun Shin,Sangchul Roh 대한직업환경의학회 2019 대한직업환경의학회지 Vol.31 No.-

Background: The objective of the present study is to identify differences in the prevalence of acute occupational pesticide poisoning across Korean orchard farmers" farming characteristics and the risk factors that have an effect on acute occupational pesticide poisoning. Methods: For 3 years (2014, 2015, and 2017), a questionnaire survey was conducted on 394 orchard farmers in some parts of south Chungcheong Province in relation to pesticide poisoning. 323 orchard farmers who responded to acute occupational pesticide poisoning were included for final analysis. With acute occupational pesticide poisoning as the dependent variable, a χ2 test and a multiple logistic regression analysis were conducted. Results: The results of the prevalence of acute occupational pesticide poisoning across farming characteristics showed that the group wearing 4 or more pesticide personal protective equipment (PPE) had a lower prevalence of acute occupational pesticide poisoning than the group wearing 3 or less pesticide PPE (p < 0.05). Furthermore, an analysis by area of fruit farming revealed that the group with more than 12,000m² in the area of fruit farming had a higher prevalence of acute occupational pesticide poisoning (p < 0.05). Orchard farmers mainly use a speed sprayer to spray pesticides, and the speed sprayer can be categorized by presence of cabin. The analysis of the prevalence of acute occupational pesticide poisoning by speed sprayer"s cabin existence found that existence of speed sprayer"s cabin did not show a statistically significant difference in the prevalence of acute occupational pesticide poisoning. Conclusions: The present study analyzed the prevalence of acute occupational pesticide poisoning depending on the speed sprayer"s cabin existence and found no significant difference. The fact that famers using the cabinless style speed sprayer shows a higher percentage in wearing PPE than those using the cabin style speed sprayer is suggested to elucidate the result. As the first study in Korea which examined the prevalence of acute occupational pesticide poisoning by speed sprayer"s cabin existence, the present study proposes the expected effect that increase of wearing pesticide PPE along with employ of speed sprayer"s cabin can reduce the prevalence of acute occupational pesticide poisoning among orchard farmers.

A Study on the Efficiency Improvement of Geothermal Heat Pump System by Water Flow Rate Control of the Geothermal Water Circulation Pump

Jihyun Shin(신지현),Younghum Cho(조영흠) 한국태양에너지학회 2017 한국태양에너지학회 학술대회논문집 Vol.2017 No.4

Gamma-tocopherol supplementation ameliorated hyper-inflammatory response during the early cutaneous wound healing in alloxan-induced diabetic mice

Shin, Jihyun,Yang, Soo Jin,Lim, Yunsook SAGE Publications 2017 Experimental biology and medicine Vol.242 No.5

<P>Delayed wound healing is one of the major diabetic complications. During wound healing process, the early inflammatory stage is important for better prognosis. One of antioxidant nutrient, gamma-tocopherol (GT) is considered to regulate inflammatory conditions. This study investigated the effect of GT supplementation on mechanism associated with inflammation, oxidative stress, and apoptosis during early cutaneous wound healing in diabetic mice. Diabetes was induced by alloxan injection in ICR mice. All mice were divided into three groups: non-diabetic control mice (CON), diabetic control mice (DMC), and diabetic mice supplemented with GT (GT). After two weeks of GT supplementation, excisional wounds were made by biopsy punches (4 mm). Diabetic mice showed increases in fasting blood glucose (FBG) level, hyper-inflammatory response, oxidative stress, and delayed wound closure rate compared to non-diabetic mice. However, GT supplementation reduced FBG level and accelerated wound closure rate by regulation of inflammatory response-related proteins such as nuclear factor kappa B, interleukin-1 beta, tumor necrosis factor-alpha, and c-reactive protein, and oxidative stress-related markers including nuclear factor (erythroid derived 2)-like 2, NAD(P) H dehydrogenase quinone1, heme oxygenase-1, manganese superoxide dismutase, catalase and glutathione peroxidase and apoptosis-related markers such as sirtuin-1, peroxisome proliferator- activated receptor gamma coactivator 1-alpha, and p53 in diabetic mice. Taken together, GT would be a potential therapeutic to prevent diabetes-induced delayed wound healing by regulation of inflammatory response, apoptosis, and oxidative stress.</P>

Severe chemical burns related to dermal exposure to herbicide containing glyphosate and glufosinate with surfactant in Korea

Jihyun Shin,Namkyu Lim,Sangchul Roh 대한직업환경의학회 2020 대한직업환경의학회지 Vol.32 No.-

Background: Glyphosate and glufosinate use widely used as herbicide ingredients. There have been several reported cases of chemical burns caused by dermal exposure to glyphosate-containing herbicide, and patients in these cases were discharged without fatal complications. There were no cases of severe symptoms due to non-oral exposure of glufosinate-containing herbicides. Here, we report a case of fatality accompanied with severe chemical burns in an 81-year-old man who did not wash his skin for more than 48 hours after dermal exposure to herbicide containing glyphosate and glufosinate with surfactant (HGlyGluS). Case presentation: An 81-year-old male with no underlying disease was admitted to the emergency department (ED). He had sprayed HGlyGluS with a manual knapsack sprayer 3 days ago and had not wash away the herbicide. On arrival, he was drowsy and had multiple severe corrosive skin lesions. Skin necrosis (10 × 15 cm) on the right shoulder and skin lesions with subcutaneous fat exposure (15 × 20 cm) on the right thigh were observed. Although he was treated including continuous renal replacement therapy, antibiotic apply, debridement operations, and so on, he was unable to recover and expired. Conclusions: We suggest that prolonged dermal exposure to HGlyGluS induces fatality. Further studies including prolonged dermal exposure and ingredients of surfactants should be carried out. Also, it is necessary to educate farmers that it is very important to wash immediately after dermal exposure to pesticide.

Characterization of a Whole-Cell Biotransformation Using a Constitutive Lysine Decarboxylase from Escherichia coli for the High-Level Production of Cadaverine from Industrial Grade l-Lysine

Shin, Jihyun,Joo, Jeong Chan,Lee, Eunji,Hyun, Sung Min,Kim, Hyun Joong,Park, Si Jae,Yang, Yung-Hun,Park, Kyungmoon Springer-Verlag 2018 Applied biochemistry and biotechnology Vol.185 No.4

외상후스트레스장애(PTSD)의 미술치료적 접근

신지현(Jihyun Shin),이현심(Hyusim Lee) 지속가능과학회 2014 지속가능연구 Vol.5 No.3

외상후스트레스장애는 생명을 위협하는 신체적 · 정신적 충격인 외상을 경험한 후 나타나는 정신적인 질환이다. 그러나, 모든 사람이 외상을 경험했다 하더라도 외상후스트레스장애를 유발하는 것은 아니다. 어떤 사람은 외상사건을 경험한 후 긍정적인 변화를 경험하기도 한다. 즉 극적인 생의 위기가 어떤 개인에게는 긍정적으로 변화하기도 한다. 그렇기에 외상을 겪은 사람들이 외상후스트레스를 극복하여 외상후성장으로 나아갈 수 있도록 돕는 중재가 필요하다. 그러나, 큰 충격 이후 대부분의 사람들은 아무 말도 하지 않으려고 하거나 자기표현과 자기조절에 어려움을 겪으며 상담조차 받으려고 하지 않으려 한다. 따라서, 이들을 돕는 적절한 치료적 대안으로 미술치료를 제시하고자 하며 이를 통해 외상후스트레스장애를 겪고 있는 대상을 위한 임상자료의 기초를 제공하고자 한다. The purpose of this case study was to carry out mother and child group art therapy program for disabled children in special classes in order to figure out its effect on child and mother. For this purpose, this study performed mother and child group art therapy program for 28 sessions for 8 months targeted to 4 children in special classes and 4 mothers. As a result, it was able to explore various arts media, develop and promote sensory function in link with the work process. With those activities, it could promote sensory integration as adaptation reaction. The exposure of children in natural art play environments stimulates sensory functions which became an important basic learning task for disabled children. Experience training of various sensory stimulations through sensory organs could be a foundation of developing overall capacity of disabled children. And, by participating mothers it could help to play a role as parents for children and to design a proper treatment and educational measures for children. Therefore, it helped to improve mother and child relation.

복합외상경험자의 접촉 경계에 대한 분석적 자문화 기술지

신지현 ( Jihyun Shin ) 한국게슈탈트상담심리학회 2023 한국게슈탈트상담연구 Vol.13 No.1

본 연구는 복합외상 경험자의 경계없음을 게슈탈트 이론의 접촉 경계 혼란으로 보고, 상담과정을 통해 경계가 세워지는 과정에 대한 이해를 돕고자 하였다. 이를 위해 복합외상 경험자인 연구자의 상담 기록을 분석적 자문화 기술지를 적용하여 분석하였다. 분석 결과는 다음과 같다. 첫째, 복합외상 경험은 죽은 것 같은 경험으로 ‘내’가 사라진 상태와 같기 때문에 접촉경계 혼란 문제를 가지게 한다. 둘째, 경계 회복을 위해 신체의 알아차림을 증진시킬 수 있는 안정화 기법이 필요하다. 셋째, 복합외상 경험자들과의 상담에서 상담자의 경계 유지를 통해 내담자가 경계를 배울 수 있다. 넷째, 게슈탈트 영성 치료는 복합외상 경험자의 접촉 경계에 의미 있는 회복 경험이 될 수 있다. 마지막으로 연구의 의의와 한계, 후속 연구에 대해 제언하였다. 본 연구는 복합외상 경험자의 경계를 접촉 경계 혼란으로 이해하고 경계 회복을 위해 상담에서 적용할 수 있는 전략을 제시하였다는데 의의가 있다. This study viewed the lack of boundaries of a person who have experienced complex trauma as contact boundary confusion of the Gestalt theory and attempted to help understand how boundaries are established through the counseling process. To this end, the counseling records of the researcher who had experienced complex trauma were analyzed by applying analytical auto-ethnography. The analysis results were as follows. First, the complex trauma experience is like a state in which “I” has disappeared due to a death-like experience. This led to the problem of contact boundary confusion. Second, a stabilization technique that can improve the body’s perception is needed to restore boundaries. Third, when it comes to counseling with complex trauma experienced people, clients can learn boundaries through the counselor's maintenance of boundaries. Fourth, Gestalt spirituality treatment can be a meaningful recovery experience for the boundary contact of those who have experienced complex trauma. Finally, the significance and limitations of this study and subsequent studies were suggested. This study is meaningful in that it understood the boundaries of those who experienced complex trauma as contact boundary confusion and suggested strategies that can be applied in counseling to restore boundaries.

이차 사용자의 스펙트럼 공유를 위한 다중 접속 일차 채널의 파워 할당

신지현(Jihyun Shin),김동우(Dongwoo Kim) 한국통신학회 2015 한국통신학회 학술대회논문집 Vol.2015 No.06

중계노드를 활용한 차량-노변통신 커버리지확장

신지현(Jihyun Shin),김동우(Dongwoo Kim) 한국통신학회 2012 한국통신학회 학술대회논문집 Vol.2012 No.6