FC 1-4 : A survey of attitudes, knowledge, and behavior regarding sun exposure and sunscreen use

( Sih Yeok Jang ),( Hyeong Ho Ryu ),( Eun Jung Hwang ),( Hyun Sun Park ),( So Yun Cho ),( Hyun Sun Yoon ) 대한피부과학회 2013 대한피부과학회 학술발표대회집 Vol.65 No.2

Background: Although sunscreen is used as a primary strategy to prevent sunburn, photoaging and skin cancer, only a few people regularly use sunscreen. Objectives: To investigate the awareness of effects of sunlight, the extent of sun exposure, and the behaviors about sunscreen uses in Korean. Methods: A questionnaire was administered 255 adult patients visited Dermatology Department at Seoul National University Boramae Hospital. It included questions about the awareness of benefit or harm of sunlight, perceived and actual extent of sun exposure, the use of sun-protective methods including sunscreen. Results: Sun exposure was chosen as the major cause of dyschromia (61.2%), skin cancer (62.8%) and wrinkle (28.6%). Respondents were likely to underestimate the extent of sun exposure. On average, quite a few respondents stated that they were exposed to sunlight more than one hour per day (23.1% on weekdays, 53.4% on weekends). But, only 8.7% thought that their sun exposures were problematic and 62.2% of respondents considered moderate sunlight exposure good for health. People`s sun protective behaviors were inadequate: only 30.8% used sunscreen regularly; 18.4% have never used sunscreen. SPF was the most important factor choosing sunscreen and 86.0% used sunscreen labeled SPF over 30. In contrast, only 40.3% used PA+++ sunscreen. Conclusion: Despite a fairly good knowledge about harmful effects of sunlight, people underestimated the risks of their sun exposure and behaviors were suboptimal.

태양돛 기술 동향

조형순(Hyeong-Sun Cho),김학인(Hak-In Kim),이수용(Soo-Yong Lee),노진호(Jin-Ho Roh) 한국항공우주학회 2014 韓國航空宇宙學會誌 Vol.42 No.6

태양돛은 태양 광자들의 운동량 변화를 이용하여 추력을 얻는 우주선이다. 매우 작지만 연속적인 가속도를 얻을 수 있어 태양돛은 다양한 임무를 수행할 수 있다. 효과적인 임무 개발을 위해서는 태양돛의 형상, 돛의 재료 그리고 전개 장치에 따른 구조/재료적 특성뿐만 아니라 위성의 임무 궤적에 따른 자세제어 방법들을 고려해야 한다. 본 논문에서는 태양돛의 기술발전, 태양돛 제작에 필요한 소요기술 그리고 태양돛을 이용한 향후 개발 가능한 위성 임무에 대하여 살펴보고자 한다. Solar sail spacecrafts can gain propulsion using the momentum change through reflecting the photon packets of energy from the Sun. The sail slowly but continuously accelerates to accomplish a wide-range of potential missions. To develop the potential mission of the solar sail, the configuration, the film characteristics and the deployment devices should be carefully considered. In this paper, recent development and activities of the solar sail are introduced and design technology of the sail subsystem is investigated.

고지방식을 섭취한 랫드에서 김치유산균의 콜레스테롤 저하효과

조미선, 노정미, 임형준, 한선경, 신명수, 이완규 충북대학교 동물의학연구소 2006 Journal of Biomedical and Translational Research Vol.7 No.2

본문참고

젊은 성인 남자의 흡연과 혈청 지질과의 관련성

조선,류소연,박종,강명근,김은숙,김형철,박광희,윤혜은,노희송 朝鮮大學校 附設 醫學硏究所 2007 The Medical Journal of Chosun University Vol.32 No.2

Objectives: This study was performed to find the association of cigarette smoking and blood lipid profiles in healthy young adults. Methods: The data was collected by a self-administered questionnaire and health examination in 489 professional soldiers from 6 to 12 May, 2004. The status of cigarette smoking was classified by non-smoking, ex-smoked, ≤4.9, 5-9.9, and ≥10 pack-years. The statistical analysis were used by chi-square test, analysis of variance and analysis of covariates. Results: In status of subjects cigarette smoking, current smoking, ex-smoked, and non-smoking were 71.8%, 11.2%, and 17.0%, respectively, In distribution by amount of smoking, non-smoking, ex-smoked, ≤4.9 pack-years, 5-9.9 pack-years, and ≥10 pack-years were 17.0%, 11.2%, 37.4%, 21.3%, and 13.1%, respectively. At other confounding variables were controlled, total cholesterol and LDL-cholesterol were increased significantly when amount of smoking was increased. However, triglyceride and HDL-cholesterol did not showed statistically significant differences, Conclusion: Smoking has relevant to total cholesterol and LDL-cholesterol and it is need to perform the further study for finding how blood lipid profiles are affected its level by cigarette smoking and to find an influence of cigarette smoking on cardiovascular disease.

P2P 기반 Mobile System 구현

황인선,이호현,전병균,김형균 광주보건대학 2004 論文集 Vol.29 No.-

P2P network environments provide mobile users with direct data transmission and sharingfacilities and those environments can be classified into hybrid P2P network environments and pure P2P network environments according to the arbitration mechanism among the peers in the network. In pure P2P network environments, however, each peer directly connects to another peer and gets services without server intervention, and so, network isolation can occur when the mediating peer fails to work. In this paper, we propose a scheme for each peer to keep connection to other peers continuously by maintaining IP addresses of its neighbor peers and connecting to the peers when the mediating peer fails to work. Although the P2P application that uses our proposed framework should obtain one or more IP addresses of the neighbor peers manually, after instantiation, the application can do its job while maintaining connection to the network continuously and automatically. In order to improve these weaknesses, we introduce LBS(Location Based Service) and mobile P2P(Peer to Peer)service into the existing systems, then design and implement the enhanced system for mobile SFA using them. Through this improvement, our system makes it possible for customers or sales agents to quickly share various information and increases the efficiency of sales activity by facilitating the competition and cooperation among sales agents and reducing time-cost.

고압 분사노즐의 최적형상에 관한 연구

이종선,김형철 한국공작기계학회 2003 한국생산제조학회지 Vol.12 No.2

This study makes to flow analysis of computational fluid dynamics(CFD) according to the basic theory of turbulent flow regarding high-pressure injection nozzle. It also makes structural analysis to find out the structural validity of the optimum shape of high-pressure injection nozzle. It divides to two areas such as plunger area and high-pressure injection nozzle area including plunger.

日本의 수학교육 현대화 동향 : 초등 수학 교육을 중심으로

黃善衡 仁川敎育大學校 初等敎育硏究所 1971 교육논총 Vol.2 No.-

백서 대장암의 동종면역효과에 관한 연구 : Effect of Cancer Bearing Rat Serum

김형일,박애자,장선택 중앙대학교 의과대학 의과학연구소 1988 中央醫大誌 Vol.13 No.2

In recent years, there has been much interests in identification and characterization of numerous tumor relating substances including ectopic hormones, oncofetal antigens, or abnormal enzymes for the diagnosis and monitoring of malignant tumors. But, practically so called cancer antigen, such as AFP, CEA, or TPA, which has been never used toward manufacturing anti-cancer antibody, while only used to compete the cancer tissue type specificity. Nowadays, cancer antigen must be actually applied in the field of cancer treatment by means of the mediator or inducer for anti-cancer antibody formation. This study researched the alloimmunization effect of the serum components obtained from cancer developing animals, chemical carcinogen (NG: N-methyl-N'-nitroso-N-nitrosoguanidine) induced colon adenocarcinoma model, in 216 male rats, and gained following results: 1. In cancer producing rats, the CRP levels were maintained evenly high values althrough the experimental period, but serum TPA was gradually increased along sequential studies, while βCG and LDH were increased in early acute phase and sooner decreased in late phase. 2. The individuals, those were alloimmunized by the serum acquired from cancer bearing rats, represented significantly high cancer rejection rate, especially in the group which was infused the serum of conspicuously high TPA concentration. 3. In the long survivers and cancer resistance group, could observed neither high βCG level nor increased LDH value, however the early deaths revealed extremely higher βCG and LDH levels in contrast of relatively lower TPA concentration. 4. So, there was able to confirm the fact that not only cancer rejection antigenicity was presented in the serum of cancer developing individuals, but also could gained prominent allommunization effect utilizing such serum of high occurring TPA believing one of immunologic cancer rejectives by itself or mediation of antibody inducing effects.

CAD/CAM 시스템을 활용한 세라믹 공구 금형제작

이종선,김형철 한국공작기계학회 2002 한국공작기계학회 춘계학술대회논문집 Vol.2002 No.-

The object of this study is a manufacture of buff die using CAD/CAM systems. Systems are consist of AutoCAD, CAM software and CNC milling machine. CAM software is purpose of G-code generation for CNC programming. Then CAM software and CNC milling machine are connect to RS-232-C cable for networking.

응급실 심정지 환자의 심폐소생술시 순환 회복률에 관한연구

김선표,조남수,조수형 朝鮮大學校 附設 醫學硏究所 2004 The Medical Journal of Chosun University Vol.29 No.3

Background and Objectives: There has been an increase in the number of cardiac arrests due to increase in both cardiovascular diseases and the average age of the population. This study was designed to improve the result of CPR(cardiopulmonary resuscitation) by comparing and studying the outcomes of cardiac arrest. Materials and Method: We reviewed the charts of 283 patients whom CPR was performed of CPR performed in emergency department of Chosun University Hospital during the period from April 2001 to March 2004. Results: During the period, CPR were performed to 283 cardiac arrest patients. Initial ECG(Electrocardiogram) rhythm showed VF/VT(ventricular fibrillation/ventricular tachycardia) in 34 (12%) patients, PEA(pulseless electrical activity) in 99 (35%) patients and asystole in 150 (53%) patients. The precipitating causes of cardiac arrest were cardiogenic origin 20 (15.9%), non cardiogenic 164 (58%) and traumatic 55 (26.1%). 109 (38%) patients recovered the ROSC (restoration of spontaneous circulation) at least once and 7 (2.5%) patients discharged alive. Conclusion: The survival rate of patients with cardiac arrest has not changed much compared to the past. Positive predictive factor for ROSC is VF/VT as initial ECG rhythm. Negative predictive factor for ROSC is traumatic etiology.