신체활동이 지체장애인의 자아정체감에 미치는 영향

유건성(Geon Sung Yoo),변재훈(Jae Hoon Byeon) 한국체육교육학회 2009 한국체육교육학회지 Vol.14 No.1

The purpose of this study was self-identity of individuals with physical disabilities participating in physical activity. Subjects included 198(male: 143 female: 58) with individuals with physical disabilities. The questionnaire that was developed by Park Ah-Chung(1996) was used self-identity scale of Korean. It was revised by Lee Sung-Guk(1999) which consisted of 6 factors, 48 items. Construct validity of the instrument was checked by Factor analysis. Reliability of questions was confirmed by Cronbach`s α value(.783). The data analysis were Independent t-test, one-way ANOVA, and multiple regression analysis. The results were as follows; First, job and incomes had significant effects on self-identity of individuals with physical disabilities. Second, physical instructors, mass media, and friends had significant effects on self-identity of individuals with physical disabilities. Third, physical activity period, group exercise, and athletes with disabilities had significant effects on self-identity of individuals with physical disabilities. Fourth, high understanding of disability traits significant difference than low understanding of disabilities traits on self-identity of individuals with physical disabilities. These results implied that individuals with physical disabilities participation in physical activity had significant effects on their self-identity according to socio-demographic variables, significant other, type of physical activity, participation type of physical activity, and understanding of disability traits.

소음 노출 남성 근로자에서의 청력저하와 혈청 마그네슘의 관련성

박완섭,이종영,정상재,유재영,최태성,홍성철,노성찬 大韓産業醫學會 2000 대한직업환경의학회지 Vol.12 No.1

목적 : 본 연구는 소음에 노출된 남자 근로자를 대상으로 장기간 소음 폭로가 혈청 마그네슘의 농도와 관련이 있는지를 검정하고 이러한 혈청 마그네슘의 농도가 또한 청력저하와 관련이 있는지를 파악하기 위하여 수행되었다. 방법 : 소음에 노출되는 178명의 연구대상자를 청력저하의 정도에 따라 세 그룹으로 분류하고, 구조화된 설문, 신체계측, 혈액검사 등으로 청력저하에 대한 감수성 요인과 혈청 마그네슘 등을 수집하고 측정하였으며, 대상자들의 청력 역치를 측정하기 위하여 청력검사를 실시하였다. 결과 : 본 연구의 결과를 요약하면 다음과 같다. 첫재, 청력저하에 관련된 개인의 감수성 인자라고 알려진 변수인 흡연유무, 나이, 혈압, 헤마토크리트, 콜레스테롤, 혈당 중에서 나이, 이완기 혈압이 단순분석에서 세 그룹간에 차이가 있었고(p〈0.05), 혈청 마그네슘의 농도 또한 세 그룹간에 통계적으로 유의한 차이가 있었으며(p〈0.05) 청력저하가 심할수록 혈청 마그네슘 농도는 낮아지는 경향을 보였다. 둘째, 그룹간의 소음 노출력은 차이가 있었지만 (p〈0.05) 청력보호구 착용상태에는 유의한 차이가 없었다. 셋째, 혈청 마그네슘 농도에 영향을 줄 수 있는 변수인 소음 노출 기간, 마그네슘 함량이 많은 음식의 섭취정도, 스트레스 수준 중에서 소음 노출기간이 혈청 마그네슘 농도와 유의한 상관관계를 보였고(p〈0.05) 노출기간이 길수록 마그네슘의 혈청농도는 낮아지는 경향을 나타내었다. 넷째, 주파수별로 청력저하와 관련된 감수성 요인들에 대한 다중회귀분석 결과 주파수 1,000 Hz에서는 연령이 좌,우측 귀 모두에서 유의한 변수로 채택되었으며 (p〈0.05), 연령이 증가할수록 청력저하가 심해지는 경향을 보였고, 주파수 4,000 Hz에서는 확장기 혈압, 소음 노출 기간, 혈청 마그네슘 등이 청력저하에 대한 감수성 요인으로 채택되었으며(p(0.05), 이완기 혈압이 높을수록, 소음노출 기간이 길수록, 혈청 마그네슘의 농도가 낮을수록 청력저하가 심해지는 것으로 나타났다. Objectivea : This study was conducted to investigate that the chronic noise exposure is associated with decreased serum magnesium concentrations and evaluate whether decreased serum magnesium is associated with noise induced hearing loss. Methods : One hundred seventy-eight male workers exposed to noise were selected and classified three groups by the degree of hearing loss. Hearing threshold levels were less than 30 dB at 1,000 Hz or less than 40 dB at 4,000 Hz In group I, more than 30 dB at 1,000 Hz or more than 40 dB at 4,000 Hz and 15 dB and less of pure tone average[PTA : (500 Hz+l,000 Hz+2,000 Hz)/3] in group II, more than 30 dB at 1,000 Hz or more than 40 dB at 4,000 Hz and over 15 dB of PTA in group III. Results : Serum magnesium concentrations were 2.42±0.26 mg/dl in group 1, 2.35±0.23 mg/dl in group n , 2.26±0.24 mg/dl in group II, respectively and significantly differ-ent between group I and group III (p〈0.01). It was negatively correlated with duration of the noise exposure as correlation coefficient (r) of -0.194 (p(0.05) . Analysis of the multipleregression on hearing threshold levels showed that serum magnesium, diastolic blood pres-sure, duration of the noise exposure were statistically significant at 4,000 Hz (p(0.05) . While only age was statistically significant at 7,000 Hz (p(0.05) . Conclusions : These results suggest that chronic noise exposure may induces decreasein serum magnesium concentrations and that its decreased concentration is related with noise induced hearing loss.

ZnO 초미립분말 분산이 수용액으로부터 Ag이온을 수거하기 위한 광촉매 작용에 미치는 영향

유강,박혜정,정윤중,이재춘,박성 明知大學校 産業技術硏究所 2006 産業技術硏究所論文集 Vol.25 No.-

ZnO nanopowders were prepared by solution-combustion method (SCM). The SCM ZnO nanopowders were treated by five different dispersants. They were used as a photocatalyst to remove Ag ions from a used photographic developing solution. The Ag ion removal rates by the dispersed SCM ZnO nanopowders were then compared to those by otherphotocatalyst powders such as ZnO(Junsei, Japan), P25 TiO₂ (Degussa, Germany) and TiO₂ powder prepared by homogeneous precipitation process at low temperature (HPPLT). The dispersion of SCM ZnO nanopowderin the solution enhanced the Ag ion removal rate up to about 20folds compared to P25 TiO₂ nanopowder and 5 folds to SCM ZnO nanopowders without dispersion. Sodium hexametaphosphate was the most effective dispersant among them.

최근 5년간 급성 A형 간염으로 입원한 환자들에 대한 입원 내용 분석

장재영,유병욱,조용진,오정은,홍성호,조주연 순천향대학교 의학연구소 2009 Journal of Soonchunhyang Medical Science Vol.15 No.1

Abstract Background : Due to improvements in Korea's sanitary conditions, antibody rates to the hepatitis A virus is decreasing rapidly and admission due to the disease is increasing, Patients who were admitted for hepatitis A during the last 5 years were selected and yearly differences in admission, clinical picture, medical fees, and differences according to age and gender were analyzed. Methods : Patients who were admitted to the Seoul Soonchunhyang University Hospital during the 5 year period between May of 2003 and April of 2008 and tested positive for IgM anti-HAV were selected and their medical records retrospectively analyzed. Results : 156 subjects [91 male (58%), 65 female (42%) were selected. The average age was 29.2 years (range; 21.4-37), average admission period 12.6 days (range; 12.5-1 7.7) days, and average medical fees 2,295,151 (range; 932,097-3,658,205) KRW(Korean Won), Yearly incidence rates were as follows : 10 for May, 2003 to April, 2004, 14 for May, 2004 to April, 2005, 23 for May, 2005 to April, 2006, 69 for May, 2006 to April, 2007, and 41 for May, 2007 to April, 2008, The maximum value median of AST, ALT, and bilirubin during admission was 989 IU/L, 1999 IU/L, and 5.6 mg/dL each, Each factors were all positively correlated with the patient's age. Conclusions : Recent decrease in antibody positivity of the hepatitis A virus and subsequent surge of acute hepatitis A is a cause of rising socioeconomic costs. A large scale epidemiologic research on whether HAV vaccination should be made mandatory and health insurance applied seems to be needed. Key words : Hepatitis A, Age, Medical fees, Vaccination

십이지장 궤양 환자와 만성 위염 환자의 염증 분포의 차이 및 H. pylori 집락도와 염증도의 상관관계

유광하,진춘조,박형석,이재동,김예리,윤성욱,이수인,윤호상 건국대학교 의과학연구소 1998 건국의과학학술지 Vol.8 No.-

An inflammatory difference between the gastric antrum, body and fundus was studied in 39 H.pylroi positive duodenal ulcer and 29 H. pylori chronic gastritis patients. Also we studied correlation of H. pylori colony count and inflammatory severity. Patients with newly diagnosed duodenal ulcer and chronic gastritis were endoscoped and two biopsy secimens each taken from the antrum, body and fundus. Although intestinal metaplasia in antrum and inflammatory activity in fundus were more severe in chronic gastritis patients. another inflammatory difference was equally likely to be found between two groups. There was no definite histological inflammatory difference between duodenal ulcer and chronic gastritis patients. A positive correlation was found between the number of H. pylori and the severity of inflammation.

運動適性에 따른 體力年齡에 관한 硏究 (Ⅰ) : 家庭主婦들을 中心으로 In the case of housewives in Pusan city

兪昌在,朴相甲 新羅大學校 1985 論文集 Vol.19 No.-

The purpose of this study is to compare the state of physical fitness age with that of chronological age in the case of housewiues aged from 30 to 49 years who live Pusan city. In order to calculate their ages of physical fitness, they were tested in five items: 1) standing long jump, 2) sit-ups, 3) push-ups, 4)timed shuttle run, 5) 5 minutes distance run. The main resulte obtained are as follows. 1. The percent body is 38.7±6.80% in the age-group of 30∼34 years, 41.7±4.89% in the age-group of 40∼44 years, ±% in the age-group of ∼ 2. The body weight has significant negative relationship with the percent body fat in all age-groups 3. The grade of physical fitness is evaluated to be in the 5th grade in all age-groups, but the 44∼44 age-group is evaluated to be in the non-grade 4. The physical fitness age turned out to be ten years order than the chronological age in average. 5. There is significant negative relationship between the physical fitness age and five test items of physical fitness 6. There is significant negative relationship between the percent body fat and the five test items of physical fitness.

준설토의 침강특성에 관한 실험적 연구

유남재,이종호,전상현,이종용 강원대학교 산업기술연구소 2000 産業技術硏究 Vol.20 No.A

Column tests in the laboratory were preformed to investigate characteristics of settling process of dredged soil sampled from in-situ. Test results were analyzed by using the existing theories on discrete settling and hindered settling. From column tests of monitoring the interface with time, settling was found to be a linear process with time and the settling rate was increased with initial water content of slurry. The settling rate was also observed to decrease with increasing initial height of slurry. Most of settling process were composed of flocculation, hindered settling and self-weight consolidation. On the Other hands, flocculation of soil during settling was observed and it was found that the size and density of flocculated particles could be analyzed by using the method proposed by Richardson and Zaki.

소아의 연령감정에 대한 증례보고

유종만,이상호,김영재 大韓小兒齒科學會 1988 大韓小兒齒科學會誌 Vol.15 No.1

The Purpose of this case report is a determination of original age based on the growth, development and eruption of teeth. Three children were selected for the determination of original age and panoramic view of each subject was taken. Determination of age was performed by comparison stages of development of teeth by Schour & Massler and Nolla and stage of development on panormic view. The results were as follows: Case 1. : 5.5 years ±6months. Case 2. : 7.5 years ±6months. Case 3. : 6 years ±6months. In future, continuous study for stage of the development of teeth in relating to korean children is needed to reduce error for the determination of age.

준설매립지반의 압밀침하에 대한 쌍곡선 침하예측기법의 적용성 연구

유남재,전상현,전진용 江原大學校 産業技術硏究所 2008 産業技術硏究 Vol.28 No.A

Applicability of hyperbolic settlement prediction method to consolidation settlement in the dredged and reclaimed ground was assessed by analyzing results of centrifuge tests modelling self-weight consolidation of soft marine clay. From literature review about self-weight consolidation of soft marine clays located in southern coast in Korea, constitutive relationships of void ratio - effective stress - permeability and typical self-weight consolidation curves with time were obtained by analyzing centrifuge model experiments. For the condition of surcharge loading, exact solution of consolidation settlement curve obtained by using Terzaghi's consolidation theory was compared with results predicted by the hyperbolic method. It was found to have its own inherent error to predict final consolidation settlement. From results of analyzing the self-weight consolidation with time by using this method, it predicted relatively well in error range of 0.04~18% for the case of showing the linearity in the relationship between T vs T/S in the stage of consolidation degree of 60~90 %. However, it overestimated the final settlement with large errors if those relation curves were nonlinear.

고에너지 전자빔 투사를 이용한 표면합금화 재료의 미세조직 연구

유정훈,신기삼,윤재홍,이찬규,허성강,오준철,이성학,어광준 국립7개대학공동논문집간행위원회 2002 공업기술연구 Vol.2 No.-

For determination of the mechanism of microstructural modification by surface alloying technique using high energy electron beam (HEEB), surface alloys of carbon steel with TiC, TiB_2 and VC were fabricated and their microstructures were analyzed using optical microscope, XRD (X-ray diffractometer), and SEM (scanning electron microscope). The surface regions of TiC and VC surface alloy consists of 1) melted, 2) interface, and 3) heat affected regions. In the TiC surface alloy precipitates of large primary and fine eutectic TiC were observed. In TiB_2 surface alloy, neither fine precipitates were present nor the TiB_2 shape was changed from the original particles, which was attributed to the high melting temperature of TiB_2. Among the three surface alloys studied, the melted region hardness of VC surface alloy was the highest.