멜트블로운 폴리프로필렌/실리카 에어로겔 부직포의 제조와 단열 특성 분석

신정우,정영규,Shin, Jung Woo,Jeong, Young Gyu 한국섬유공학회 2018 한국섬유공학회지 Vol.55 No.6

To develop heat insulation fabrics with lightweight, low volume and excellent thermal insulation properties, in this study, a binder-free polypropylene/silica aerogel nonwoven fabric with an area density of ${\sim}79.7g/m^2$ was fabricated via a facile melt-blowing process, and its structure, thermal conductivity and thermal insulation properties were investigated. For comparison, a polyester hollow fiber nonwoven having a similar area density of ${\sim}84.6g/m^2$ was prepared by needle-punching. Additionally, a series of composite nonwoven fabrics was prepared by layering the melt-blown polypropylene/silica aerogel nonwoven and the polyester hollow fiber nonwoven in various combinations, and their thermal insulation properties and thermal conductivity were analyzed. Scanning electron microscopic analyses revealed that 5 wt% silica aerogel added during the melt-blown process was adhered well to polypropylene fiber surfaces of the nonwoven fabric. As a result, the melt-blown polypropylene/silica aerogel nonwoven fabric exhibited a low thermal conductivity of $43mW/m{\cdot}K$ and relatively high level of thermal insulation performance, although its thickness (~1.5 mm) was lower than that (~2.2 mm) of needle-punched polyester hollow fiber nonwoven with a similar area density. The thermal conductivity was lowered and thermal insulation performance was improved, as the melt-blown polypropylene/silica aerogel nonwoven fabric was layered. It was also found that increasing the number of melt-blown polypropylene/silica aerogel nonwoven fabric layers in the composite nonwoven fabrics layered in various combinations decreased the thermal conductivity and improved the thermal insulating properties.

웨어러블 디바이스를 위한 차량용 통신 네트워크

신정우(Jung Woo Shin),권오성(Oh Seong Gwon),이건하(Gun Ha Lee),고재진(Jae-Jin Ko),이상엽(Sang-Yub Lee),이승은(Seung Eun Lee) 대한전자공학회 2015 대한전자공학회 학술대회 Vol.2015 No.6

친환경소비 장애 요인 분석

신정우(Shin Jung Woo),홍아름(Hong Ah Reum) 글로벌경영학회 2017 글로벌경영학회지 Vol.14 No.3

기후변화로 인한 사회적 피해가 증가됨으로 인해 개별 소비자들은 환경문제에 대한 관심이 과거에 비해 더욱 높아지고 있는 실정이다. 하지만, 소비자들의 높아진 환경에 대한 관심은 행동으로 이어지지 않는 태도-행동 불일치성이 발생한다. 친환경소비에 대한 태도-행동 불일치성으로 인해 친환경소비가 활성화 되지 않는 문제를 야기하게 된다. 따라서 본 연구에서는 친환경소비 활성화 정책수립을 위해 친환경소비 저해요인을 분석하였고, 분석 대상으로 일상생활에서 반복구매가 가능한 친환경세제 제품을 고려하였다. 분석에 앞서 기존 이론들을 바탕으로 소비자들의 의사결정 단계를 인식(인지-지식), 정서(호감-선호)-행동(확신-구매) 단계로 세분화하여 분석 모형을 구축하였고, 제품, 매체, 소비자 관점의 결정요인들을 고려하였다. 본 연구는 제품, 매체, 소비자 관점에서의 소비자들의 의사결정 구조에 미치는 영향을 세부적으로 살펴봄으로써 향후 친환경세제의 소비활성화 정책 마련의 기초자료를 제공한다. Due to the increasing social damage caused by climate change, individual consumers are becoming more concerned about environmental issues than in the past. However, interest in consumers elevated environments creates behavioral inconsistency. Attitudes toward green consumption behavioral inconsistency creates problems that prevent eco-friendly consumption. Therefore, this study analyzed the factors in green consumption for developing eco-friendly consumption policies. We considered the eco-friendly laundry detergents that allow us to purchase repetitive purchases in our daily lives. Prior to the analysis, the existing theories of decision making were subdivided into cognitive, affective, and conative stages of consumers decision, that was taken to determine the determinants of products, media, and consumer perspectives. This study provides the basic data for preparing environmental consumption activation policies for future eco-friendly detergent by detailing the impact of consumers ’ decisions on the decision structure of products, media and consumer perspectives.

만성 간질환 치료의 최신 지견 ; 만성 B형 간염 치료

신정우 ( Jung Woo Shin ),박능화 ( Neung Hwa Park ) 대한내과학회 2009 대한내과학회지 Vol.77 No.3

Despite the introduction of hepatitis B virus (HBV) vaccine for over 20 years now, HBV infection remains an important health problem. Antiviral treatment of chronic hepatitis B has dramatically changed over the last decade. A variety of therapeutic options are now available for the treatment of chronic hepatitis B infection, including four nucleos (t) ide analogues (i.e lamivudine, adefovir, entecavir and clevudine), along with standard and pegylated interferon. Newer oral nucleos (t) ide analogues that include tenofovir, emtricitabine and telbivudine are soon likely to be approved in Korea. Given the wide array of choices and the complex nature of chronic hepatitis B (CHB) infection, selection of the appropriate therapeutic agent can be challenging for clinicians. To help guide clinicians in treating patients with CHB, the Korean Association for the Study of the Liver published a guideline in 2004, which was subsequently revised in 2007 on the basis of new developments in the field. This review includes the range of treatment options and criteria for determining when and how to most effectively intervene with antiviral therapy for chronically infected patients with HBV. (Korean J Med 77:265-274, 2009)

비침습적 간섬유화 검사의 종류와 의의

신정우 ( Jung Woo Shin ),박능화 ( Neung Hwa Park ) 대한소화기학회 2016 대한소화기학회지 Vol.68 No.1

The diagnostic assessment of liver fibrosis is an important step in the management of patients with chronic liver diseases. Liver biopsy is considered the gold standard to assess necroinflammation and fibrosis. However, recent technical advances have introduced numerous serum biomarkers and imaging tools using elastography as noninvasive alternatives to biopsy. Serum markers can be direct or indirect markers of the fibrosis process. The elastography-based studies include transient elastography, acoustic radiation force imaging, supersonic shear wave imaging and magnetic resonance elastography. As accumulation of clinical data shows that noninvasive tests provide prognostic information of clinical relevance, non-invasive diagnostic tools have been incorporated into clinical guidelines and practice. Here, the authors review noninvasive tests for the diagnosis of liver fibrosis. (Korean J Gastroenterol 2016;68:4-9)

타목시펜이 간세포암 세포주의 성장 및 Transforming Growth Factor-β1 발현에 미치는 영향

신정우 ( Jung Woo Shin ),정영화 ( Young Hwa Chung ),박무인 ( Moo In Park ),김정아 ( Jeong A Kim ),최민희 ( Min Hee Choi ),이윤정 ( Yun Jung Lee ),송병철 ( Byung Cheol Song ),류수형 ( Soo Hyung Ryu ),서동대 ( Dong Dae Suh ),표승일 대한소화기학회 2002 대한소화기학회 춘계학술대회 Vol.2002 No.-

<목적> 타목시펜의 경구 투여에 의해 진행성 간세포암 환자들의 생존기간이 연장되었다는 보고들이 있었으나 그 치료효과에 대해서는 아직까지 이견이 있는 실정이다. 간세포암에 대한 타목시펜의 작용기전 역시 아직까지 명확하지 않으나, 최근 타목시펜이 간세포암에 미치는 영향이 에스트로겐 수용체와 무관함이 밝혀졌고, 간세포암의 성장과 진행에 관여하여 transforming growth factor β1 (TGF-β1)의 발현과 관계가 있다는 보고가 있었다. 따라서

한국 권역 호흡기전문질환센터 흡입기 사용 실태조사 -충북대 병원을 중심으로

신정우(Jung-Woo Shin) 대한심장호흡물리치료학회 2019 대한심장호흡물리치료학회지 Vol.7 No.1

Purpose : This study has been conducted to identify the use of inhalers in one of five regional special respiratory centers in korea. Methods : A survey was conducted through structured questionnaire for outpatients who were treated by department of respiratory and allegry. The survey items consisted of a total of 10 questions, included age of outpatients, duration of inhaler use, inhaler educated or not, the number of education on the use of inhalers, who has received inhaler training, inhaler modify or not, the number of modify on the use of inhalers, the number of modified inhaler education, inhaler effect or not, degree of inhaler effect. Results : The highest response in the age item was 40s and 70s. Duration of inhaler use was 95.5% over 1year. Inhaler education was 100%. The number of education on the use of inhalers was highest in more 10 times. educators were followed by doctors, nurses, and pharmacists. Inhaler modify was 59%. The number of modify were 1 to 4 times. when modify inhalers, 69.7% were only educated. In inhaler effect item, 22.6% of the respondents said that they did not effect and did not know well. the effectiveness of the inhaler was 22.7% with 0points. Conclusion : In order to improve the problems in the use of the inhaler, the subject is old and mabe incomprehensible, so a long time is required, and the attention and education of physical therapist who is missing frome the role of the inhaler education is required to increase the number of insufficient education.

코로나 바이러스로 인한 폐 섬유증에 대한 호흡물리치료 임상사례

신정우(Jung-Woo Shin) 대한심장호흡물리치료학회 2021 대한심장호흡물리치료학회지 Vol.9 No.2

Purpose : This case study aimed to investigate the effectiveness of respiratory physical therapy for pulmonary fibrosis caused by coronavirus disease 2019(COVID-19). Methods : A patient with pulmonary fibrosis caused by COVID-19 underwent respiratory physical therapy and education for diaphragmatic breathing patterns, ventilatory movement strategies, positioning for dyspnea relief, diaphragmatic controlled breathing, and airway clearance techniques for 3–4 months. Results : The patients with pulmonary fibrosis caused by COVID-19 who presented with dyspnea, fatigue, and general weakness showed improvement after 3–4 months of respiratory physical therapy. The oxygen supply was reduced from 3 L/min with a T-piece to 1 L/min using a nasal cannula, thereby stabilizing the patient’s breathing. In addition, functional mobility, such as bridging, rolling, sitting on a bed, and wheelchair transfer on a bed, became possible, and symptoms could be alleviated using a diaphragm breathing pattern for dyspnea. Conclusion : The results of the intervention indicate that respiratory physiotherapy is an essential interventional approach for pulmonary fibrosis caused by COVID-19.

혼합로짓모형을 이용한 샴푸 구매에 대한 소비자 선호 분석

신정우 ( Jung Woo Shin ),현지원 ( Ji Won Hyun ) 한국미용학회 2011 한국미용학회지 Vol.17 No.5

The purpose of this study is to analyze consumer preference for attributes of Shampoo and to calculate both consumer`s marginal willingness-to-pay and relative importance of each attribute. Conjoint survey method is used to collect state preference data for 500 consumers who live around Seoul, Gyeonggi and Incheon area. In addition, Mixed logit model is used and estimated by using Bayesian estimation method. Estimation results show that functionality of scalp care is the most prefer among functionality of shampoo and perfume extracted from plant is more prefer than perfume extracted from fruit. For consumer`s median marginal willingness-to-pay, functionality of scalp care and preventing hair loss is 72,600 won and 41,700 won, respectively. Thus, the results of this study provide useful information to related companies which are try to develop new products of shampoo.

산업부문 온실가스 감축 정책 기술 비용-편익 곡선

김우재(Woo jae Kim),신정우(Jung woo Shin) 한국환경정책학회 2019 한국환경정책학회 학술대회논문집 Vol.2019 No.10