태권도복 소재별 인체생리반응과 주관적 감각에 관한 연구

김명주,최정화 한국의류학회 2004 한국의류학회지 Vol.28 No.5

The purpose of this study was to evaluate thermal properties of Taekwondo wears with three different materials. As a begging step, the questionnaire survey about the actual condition of Taekwondo wears was conducted. With the results of the questionnaire, cotton/nylon(70/30) blended fabric(CN) that was newly woven with sweat absorbent finishing and cotton/spandex(95/5) blended fabric with flexibility property were developed. The same designed 3 Taekwondo wears with 3 different materials which were two different materials(CN and CS) and a current material(cotton/PET, CP) were made. Four young males volunteered for this study, they kicked and punched as Taekwondo action for 20 minutes. Mean skin temperature was the highest in CS(33.1±O.8℃) and the lowest in CP(32.7±0.6℃). Increasing degree of rectal temperature didn't show any significant difference. Clothing microclimate temperature on the thigh was higher in CS(32.8±17.4℃) than in CN(29.4±1.1℃) and CP(29.4±1.0℃). Clothing microclimate temperature on the back and humidity on the thigh didn't show any significant differences. Clothing microclimate humidity on the back was higher in CP(65±20%RH) than in CS(61±17%RH). Heart rate, total body weight loss, and local sweating were not significantly different by materials. Most subject responded more hot in CN than in others, but there were no significant differences at the subjective sensation of thermal humidity. They answered more comfortable in CN than in others. Tectile sensations were the best in CN and the worst in CS. From those results, first of all, it is necessary to be weighted on Taekwondo wears made of CN in the aspects of the dignity of military arts uniform. Secondly, CS was required to be lighted and enhanced for the subjective sensation. Third, CP weaved honey comb was asked more various design to eliminate sweat high competition power within the scope of the dignity of military arts uniform.

Clinoptilolite 계열의 국내산 천연제올라이트의 상규명 및 NH₄^+ : 이온교환능에 관한 연구

김화중,이기정,이명철 건국대학교 1995 學術誌 Vol.39 No.2

Domestic natural zeolite, Clinoptilolite series was investigated to identify the phase and to study the capability of NH4+-ion removal from the solution system. The domestic natural zeolite mined from Young-II man area was proven to be a thermally unstable zeolite, heulandite by XRD and FT-IR analyses. In addition, the heulandite exchanged by K+ ion showed the highest thermal stability upon the heat-treatments. However, the best capability of removing NH4+-ion from the solution system was the Na+-exchanged zeolite.

서열 환경에서 농작업 모자 착용에 따른 체온 조절 및 주관적 반응

김명주,최정화 한국의류학회 2004 한국의류학회지 Vol.28 No.5

This study examined the effects of two kinds of functional sun hats through a head-manikin test a climatic chamber trial for farm workers in summer. Experiment was composed of four conditions. The first condition without any hat(Control). The second was the condition with a sun hat on the market (Hat A). The third was the condition with a functional sun hat made of reflective fabric (Hat B). The last was the condition with a functional sun hat having a ventilating structure as well as reflective fabric (Hat C). For the subjects in the climatic chamber trials, 12 healthy males volunteered. Air temperature, relative humidity and globe temperature in the chamber was maintained at 33±0.5℃, 65±5%RH and 39±1℃ (WBGT 33℃). Subjects did a simulated red pepper-work (50-min work and 10-min rest, twice repetition) for 120 min. As the result of head-manikin test, the surface temperature on middle of back-neck was the lowest in Hat B of four conditions and the surface temperature on top of head was the lowest in Hat C. As the result of climatic chamber trials, there were apparent differences between with (Hat A, Hat B, Hat C) and without a sun hat (Control). In rectal temperature (T_(re)), mean skin temperature (T_(sk)), heart rate (HR), total sweat rate (TSR), The physiological heat strain was less in the condition with hats than is the condition without a sun hat. As the increasing rate in Tre, Hat B is the most effective hat for alleviation heat strain. As the subjective responses, Hat B was the most effective hat for thermal comfort even though the difference was not significant. Hat C was less effective than Hat B and the reason might be the increase of weight due to inserting the ventilating structure.

프로 야구 투수들의 견관절 회전근력

김철준,김상규,김명화 대한스포츠의학회 1994 대한스포츠의학회지 Vol.12 No.2

This study was to investigate the biomechanics and characteristics of shoulder rotator muscles of korean professional baseball pitchers and to suggest the direction of training for them. The shoulder internal rotator and external rotator muscles of twenty-one korean professional baseball pitchers were evaluated with Cybex 6000^R isokinetic dynamometer. The test angular velocity was 120℃/sec as a low speed and 240℃/sec as high speed and the test was done in standing neutral position. The peak torque, peak torque % body weight and external/internal rotator peak torque ratio were analysed and compared with those of american professional baseball pitchers and concluded as followings; 1) The peak torque and peak torque % body weight were much smaller than those of american major league pitchers especially in shoulder internal rotator muscle. 2. The external/internal rotator peak torque ratio was higher than that of american major league pitchers especially in high speed test, 240℃/sec, in which the ratio of american pitchers was lower than that of 120℃/sec. 3. The more aggressive and continuous strength training of internal rotator muscle, combined with rotator cuff strengthening, is needed. 4. Additional studies of isokinetic dynamometer are requested in the field of shoulder rehabilitation and biomechanical reserch of pitching especially in much higher speed, both eccentric and concentric methods and various testing positions.

흰쥐 망막에서 콜린성 신경원의 분포양상과 연접회로

김인범,오수자,나화균,이문용,천명훈 대한해부학회 1998 Anatomy & Cell Biology Vol.31 No.1

單調增加荷重을 받는 平面 트러스의 複合 非線型 擧動에 關한 硏究

權寧煥,金和中,金明璇,魯德煥 경북대학교 산업기술연구소 1990 産業技術硏究誌 Vol.18 No.-

The object of this study is that develop computer program as being derive simple formula considering complex (material and geometric) nonlinear, and select the most useful truss in efficiency with the analysis Howe truss, Fink truss, Pratt truss and Warren truss. The complex nonlinear behavior is considered in this paper, so is acquired following results. 1. We developed program that could analyze complex nonlinear of plane truss. 2. In view of the results analyzied the numerical analysis example of plane truss, When Howe truss, Fink truss, Pratt truss, and Warren truss are equal to weight and span, and the same load is loaded. Among the trusses of same weight, Warren truss is the most useful in efficiency. And When height of warren truss is changed, the lower height of truss, the more useful in efficiency

6개원소로 이루어진 짝이중결합화합물과 AsCl_3와의 반응

주완철,육명화,김용주 成均館大學校 科學技術硏究所 1983 論文集 Vol.34 No.2

6개의 원소로 이루어진 오르토히드록시짝이중결합화합물, 즉 시남알데히드-오르토-히드록시아닐(cinnam-aldehyde-ortho-hydroxyanil), 벤질모노히드록시아닐(benzil-mono-hydroxyanil), 오르토-히드록시벤잘아세톤페논(ortho-hydroxy benzalacetophenone)과 알진트리클로라이드(AsCI_3)와의 반응으로부터 고체반응생성물을 분리해 냈다. 이들 반응생성물의 적외선 및 자외선분광학으로부터, 이들 모든 반응생성물은 비소의 전하이동착물임을 획인했다. 이 반응으로부터 3원자가 비소화합물의 화학적거동이 인의 3원자가 화합물과 유사하지 않다는 것을 알 수 있었다. Solid products were isolated by the reaction of orthohydroxy-6-membered conjugated system such as cinnamaldehyde-ortho-hydroxyanil, benzil-mono-orthohydroxyanil and ortho-hydroxybenzalacetophenon with AsCl_3. All of these products were confirmed to be Charge-transfer complexes of As from the examination of IR and UV spectra. It could be found that the chemical behavior of trivalent As is not analogous with that of triv alent P.

미립자 응집반응을 이용한 C-reactive Protein의 면역측정법에 관한 연구

최용경,정태화,최명자,김재화,최인성,김용호,송은영,이희구 THE KOREAN SOCIETY FOR BIOMEDICAL LABORATORY SCIEN 1996 Journal of biomedical laboratory sciences Vol.2 No.1

환자의 복수와 늑막액으로부터 p-diazonium phenylphosphorylcholine(DPPC) coupled Separose-4B affinity chromatography와 hydroxylapatite chromatography를 실시하여 C-reactive protein (CRP)를 분리, 정제하였다. 정제된 CRP를 토끼에게 면역화하여 항혈청을 얻고 affinity chromatography를 하여 면역항체(IgG)를 분리하였다. 분리된 면역항체를 미립자에 감작시킨 후 미립자 응집반응에 의하여 3분내에 CRP를 측정할 수 있는 간이 면역측정법을 개발하였다. 본 연구에서 개발된 CRP측정법의 검출범위는 0.5∼20㎎/㎗이며, 임상 시험 결과 0.7∼2.9㎎/㎗에서는 강한 응집반응을, 5.0∼13.2㎎/㎗에서는 약한 응집반응을 보였고 28㎎/㎗이상에서는 항원 과잉으로 인한(zone of Ag excess phenomenon) 위음성을 나타냈다. 74명의 환자 혈청을 대상으로 CRP의 농도를 조사한 결과 평균치는 3.8㎎/㎗이었으며 대부분의 환자에서는 10㎎/㎗ 이하의 농도로 존재하였다. 그러므로 1차판정시 음성을 나타낸 시료라도 혈청을 5∼10배정도 희석하여 재분석한다면 오차없이 CRP를 검출할 수 있었다. 환자 혈청을 검체로 하여 본 연구에서 개발한 면역측정법과 현재 수입 시판중인 프랑스의 B사 제품과 일본의 I사 제품을 비교한 결과 좋은 상관관계를 보였다. 이와 같은 평가 분석을 통하여 볼 때 본 연구에서 개발한 간이 면역측정법은 사용이 비교적 간편하며 신빙성이 있어 CRP를 스크리닝 하는데 효과적임을 알 수 있었다. The C-reactive protein(CRP) from ascitic and pleural fluid was purified using calcium dependent affinity chromatography of CNBr activated Sepharose-4B covalently coupled to p-diazonium phenylphosphorylcholine(DPPC) and hydroxylapitite chromatography. Polyclonal antibody was prepared from rabbit by immunizing the purified CRP. Specific immunoglobulin G was isolated using affinity chromatography and coupled to microparticles. A sensitive microparticle-based immunoassay was developed to measure CRP within 3 mins. The detection range was between 0.5㎎/㎗ and 20㎎/㎗ in serum, showing strong response in the range of 0.7∼2.9㎎/㎗, week response in 5.0∼13.2㎎/㎗ and zone phenomenon over 28㎎/㎗. The average value of CRP in 74 samples was 3.8㎎/㎗ and most of the values were lower than 10㎎/㎗. The CRP values of serum samples were determined by our microparticle-based immunoassay, and were compared with those obtained using the other commercial products(B Co., France and I Co., Japan). Good correlations were shown between the values obtained by our developed microparticle-based immunoassay system and those by other commercial products. All performance characteristics evaluated make our developed microparticles-based immunoassay suitable for a simple, rapid, and reliable screening of CRP in serum.

습식 합성법을 이용한 CaTiO₃의 합성

이경희,소대화,이병하,김명식 明知大學校 産業技術硏究所 1987 産業技術硏究所論文集 Vol.6 No.1

It is desirable to establish reliable synthetic methods for perovskite type ceramics. To prepare CaTiO₃ in this study oxalated method, Co-precitation method and direct-wet process method was used. In oxalated method the reaction of CaCl₂ and TiCl₄at oxalic acid ammonia solution produced calcium - Titanyl oxalate. For the power preparations, the addition of NH₄OH solution has a important meaning that the component elements can be precipitated completely. The 900℃ calcined CaTiO₃ powders was pressed under 300 ㎏/㎠ into disk 15mm in diameter and 2mm thickness and then pressed hydrostatically under 500㎏/㎠. These powder compacts were sintered from 1100℃ to 1300℃ for 2hrs. The apparent density and dielectric constant were measured. The apparent densities were in the range of 90 ∼ 95% and dielectric constant was 180. Zn Co-precipitation method of CaCl₂ and TiCi₄ at (NH₄)₂CO₃ and NH₄ OH solution product CaTiO₃ and Ti(OH)₄ gel. As final synthetic method, direct - wet process was applied to form CaTiO₃.

캡슐내시경과 단일풍선 소장내시경으로 진단된 공장의 간질종양 1예

송도경,심기남,태정현,김경진,송명은,송하응,윤혜원,정가영,정정화 이화여자대학교 의과학연구소 2012 EMJ (Ewha medical journal) Vol.35 No.2

Gastrointestinal stromal tumors (GISTs) are common mesenchymal tumors that arise in the wall of the gastrointestinal tract. We report a case of obscure gastrointestinal bleeding due to a GIST of the jejunum successfully documented by videocapsule endoscopy (VCE) and single-balloon enteroscopy (SBE). A 36-year-old man with hematochezia was referred for further evaluation of no evidence of bleeding focus on esophagogastroduodenoscopy and colonoscopy. A VCE showed a suspicious ulcerative hyperemic mass that located in about 1 hour apart from duodenal second portion. SBE revealed a nonbleeding 4×2 cm mass with an ulcer at the proximal jejunum. The patient underwent laparoscopic resection without complication. Histological examination revealed a well circumscribed, dumbbell-shaped firm mass comprised of spindle cells. Immunohistochemical staining for CD 117 was diffusely positive, whereas staining for S-100, CD 34 and MIB-1 was all negative. It was confirmed to be a low-grade GIST at the proximal jejunum.