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윤의정,Jin Woo Jung,Young Hwan Han,Min-Wan Kim,Byung Cheol Lee 한국물리학회 2010 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.56 No.1
We investigated in this study the effects of high-energy electron beam irradiation (HEEBI) on the optical transmittance of undoped ZnO films grown on transparent substrates, such as corning glass and polyethersulfone (PES) plastic substrates, with a radio frequency (rf) magnetron sputtering technique. The ZnO thin films were treated with HEEBI in air at RT with an electron beam energy of 1 MeV and doses of 4.7 × 1014 – 4.7 × 1016 electrons/cm2. The optical transmittance of the ZnO films was measured using an ultraviolet visible near-infrared spectrophotometer. The detailed estimation process for separating the transmittance of HEEBI-treated ZnO films from the total transmittance of ZnO films on transparent substrates treated with HEEBI is given in this paper. We concluded that HEEBI causes a slight suppression in the optical transmittance of ZnO thin films. We also concluded that HEEBI treatment with a high dose shifted the optical band gap (Eg)toward the lower energy region from 3.29 to 3.28 eV whereas that with a low dose unchanged Eg at 3.25 eV. This shift suggested that HEEBI at RT at a high dose acts like an annealing treatment at high temperature.
윤의정,정혜선,박계원,박기문 한국버섯학회 2017 한국버섯학회지 Vol.15 No.3
The objective of this study was to determine the anti-diabetic effect of the water extract of Neolentinus lepideus in a diabetic mouse model. Seven-week-old C57BL/KsJ-db/db mice were fed either a control diet (CD) or diet supplemented with 1% or 5% of N. lepideus water extract (NLWE1 or NLWE5) for 10 weeks. Oral administration of NLWE significantly decreased the body weight gain compared to that of CD-fed group. Mice in the NLWE group had significantly lower levels of fasting serum glucose, fatty acids, and low-density lipoprotein cholesterol compared to those in the control group. These effects were accompanied by reduced fatty liver and improved glucose tolerance in the NLWE group. Taken together, these results suggest that N. lepideus might have potential as a dietary supplement to control diabetes.
탐침의 형태에 따른 배추잎의 힘-거리 곡선의 변화와 조직감과의 상관관계
윤의정,이철호 한국유변학회 1990 Korea-Australia rheology journal Vol.2 No.1
배추의 조직감 특성을 기계적으로 측정하는 방법을 수립하기 위하여 여러 가지 형 태의 탐침에 의한 침투 및 절단시험에서 나타난는 힘-거리 곡선을 비교분석하였으며 그 결 과를 배추잎의 미세구조와 관능적특성과 연관하여 해석하였다. 배추잎의 침투심험에서 탐침 의 선단각, 선단면적 및 둘레에 따라 힘-거리 곡선의 형태는 크게 달라지며 선단면적과 둘 레가 커질수록 파열력이 크게 증대되었다. 절단시험에서는 표피와 내부유관속 조직을 절단 하는 세 개의 특징적인 피크를-나타내었다. 배추잎의 염장에 의하여 침투시험의 최대 변형 력은 크게 감소된 반면 파열력은 크게 증대되어 최대 변형력에 대한 파열력의 비(a/c) 는 증가되었으며 이것은 탐침의 선단면적과 둘레가 큰경우에 더욱 두드러지게 나타났다. 염장 에 의하여 탄성한계까지의 변형거리가 커졌으며 최초 변형에서의 탄성치(a/l)는 감소하는 경 향을 나타내었다. 절단시험에서는 염장에의하여 외피의 절단력이 상대적으로 증가하였다. 배 추 및 절인배추의 아삭아삭한 정도는 침투시험의 최대변형력과 a/l의 변화와 밀접한 관계가 있으며 질긴 정도는 침투시험의 파열력과 a/c 절단시험의 절단력과 관계가 있으며 아작아작 한 정도는 침투시험의 a/c와 관계가 있는 것으로 판단되었다.
노의정,정은희,이미희,이수진,윤유숙,이재호,우성일,한윤수,박준수,김한진 대한 소아알레르기 호흡기학회 2008 Allergy Asthma & Respiratory Disease Vol.18 No.1
Purpose:Anaphylaxis is a medical emergency requiring immediate recognition and treatment. Despite the serious nature of these reactions, there is no universal agreement on the definition and there have been few epidemiologic studies of anaphylaxis in children. The purpose of the study is to investigate the causative agents, presenting signs and symptoms and course of disease in children suitable for established diagnostic criteria for anaphylaxis in the middle area of South Korea. Methods:We identified potential episodes of anaphylaxis occuring between March 1994 and October 2007 from the university hospitals in the middle area of South Korea. We reviewed all patients' medical records diagnosed with anaphylaxis and other related diagnoses. From chart review, we retrospectively collected demographic and epidemiologic data. Results:We identified 40 patients with anaphylaxis. Patients' ages ranged from 2 months to 17 years, with a mean age of 6.6 years. A causative agent was recognized in 84.5%. The inciting agent included foods in 26 cases (65%), medication in 7 cases (17.5%) and bee sting in 1 case (2.5%). Mucocutaneous manifestations were the most common, respiratory symptoms were in 35 patients, cardiovascular symptoms were in 8 patients, and gastrointestinal symptoms were in 5 patients. Conclusion:We found some cases of anaphylaxis which had misdiagnosed as urticaria or angioedema using the established diagnostic criteria. Therefore, clinicians must accurately know the criteria of anaphylaxis and make an effort to identify cases of anaphylaxis with a high suspicion. Also, we found the epidemiology, causative agents, and symptoms and treatments of anaphylaxis in the middle area of South Korea. Our data will be the basis for anaphylactic studies in South Korea. Purpose:Anaphylaxis is a medical emergency requiring immediate recognition and treatment. Despite the serious nature of these reactions, there is no universal agreement on the definition and there have been few epidemiologic studies of anaphylaxis in children. The purpose of the study is to investigate the causative agents, presenting signs and symptoms and course of disease in children suitable for established diagnostic criteria for anaphylaxis in the middle area of South Korea. Methods:We identified potential episodes of anaphylaxis occuring between March 1994 and October 2007 from the university hospitals in the middle area of South Korea. We reviewed all patients' medical records diagnosed with anaphylaxis and other related diagnoses. From chart review, we retrospectively collected demographic and epidemiologic data. Results:We identified 40 patients with anaphylaxis. Patients' ages ranged from 2 months to 17 years, with a mean age of 6.6 years. A causative agent was recognized in 84.5%. The inciting agent included foods in 26 cases (65%), medication in 7 cases (17.5%) and bee sting in 1 case (2.5%). Mucocutaneous manifestations were the most common, respiratory symptoms were in 35 patients, cardiovascular symptoms were in 8 patients, and gastrointestinal symptoms were in 5 patients. Conclusion:We found some cases of anaphylaxis which had misdiagnosed as urticaria or angioedema using the established diagnostic criteria. Therefore, clinicians must accurately know the criteria of anaphylaxis and make an effort to identify cases of anaphylaxis with a high suspicion. Also, we found the epidemiology, causative agents, and symptoms and treatments of anaphylaxis in the middle area of South Korea. Our data will be the basis for anaphylactic studies in South Korea.