용담호 진안천 유역의 비점오염유출특성1

최용호 ( Yong-ho Choi ),정용훈 ( Yong-hoon Jeong ),곽동희 ( Dong-heui Kwak ) 한국물환경학회 2021 한국물환경학회·대한상하수도학회 공동 춘계학술발표회 Vol.2021 No.-

용담호 진안천 유역의 비점오염유출특성

최용호 ( Yong-ho Choi ),정용훈 ( Yong-hoon Jeong ),곽동희 ( Dong-heui Kwak ) 한국물환경학회 2021 한국물환경학회·대한상하수도학회 공동 춘계학술발표회 Vol.2021 No.-

정준상관 행렬도와 군집분석을 응용한 KLPGA 선수의 기술과 경기성적요인에 대한 연관성 분석

최태훈,최용석,Choi, Tae-Hoon,Choi, Yong-Seok 한국통계학회 2008 응용통계연구 Vol.21 No.3

정준상관 행렬도(canonical correlation biplot)는 정준상관분석에서 두 변수 집단에 의해서 측정된 다변량 자료에서 변수 집단 간의 관계와 개체들의 관계를 탐색하기 위한 2차원 그림이다. 이는 일반적으로 최용석 (2006, 1장)의 한 변수 집단에 의한 행렬자료에 대한 일반적인 행렬도를 두 변수 집단에 의한 행렬자료로 확장한 것으로 볼 수 있다. 최근에 Choi와 Kim (2008)은 개체들이 많은 대용량 자료에서 행렬도의 해석상 힘든 문제점을 지적하고 이를 극복하는 데 군집분석을 활용하는 방법을 제시하고 있다. 일반적인 행렬도에서 발생하는 대용량 자료에 대한문제는 정준상관 행렬도에서도 동일하게 발생하곤 한다. 본 연구에서는 2006년도 KLPGA 선수 중 상금 순위 상위 50명을 대상으로 정준상관 행렬도를 통해 기술요인변수군(평균 퍼팅수. 그린 적중율, 파 세이브율, 파 브레이크율)과 경기성적요인변수군(상금, 평균 타수)간의 관련성을 살펴보고 군집분석을 활용하여 각 선수들의 군집을 시도하려한다. Canonical correlation biplot is 2-dimensional plot for investigating the relationship between two sets of variables and the relationship between observations and variables in canonical correlation analysis graphically. In general, biplot is useful for giving a graphical description of the data. However, this general biplot and also canonical correlation biplot do not give some concise interpretations between variables and observations when the number of observations are large. Recently, for overcoming this problem, Choi and Kim (2008) suggested a method to interpret the biplot analysis by applying the K-means clustering analysis. Therefore, in this study, we will apply their method for investigating the relationship between skill and competition score factors of KLPGA players using canonical correlation biplot and cluster analysis.

T 세포활성항원 CTLA-4의 기능에 관한 연구 : T 세포에서 표적세포 살해능과 CTLA-4 발현과의 연관성 Target Cytotoxicity of T Cell Correlates with CTLA-4 Production

노만택,조양자,김용식,최용,조보현,최장원,정용훈 大韓免疫學會 1996 大韓免疫學會誌 Vol.18 No.4

CTLA-4, a T cell activation antigen and a homologue of CD28, was originally identified as a gene by a series of reverse genetic approaches. While CD28 molecule has been characterized well as a stimulator of T-cell function via enhanced lymphokines production and stablilization of those mRNA, most of the functions of CTLA-4 remain unknown. It has been widely accepted that CTLA-4 functions as an immune suppressor which is down-regualting the function of CD28. We previously showed that 34 KD form of this antigen mainly expressed CD8+ subset, a cytotoxic or suppressor, of activated peripheral blood lymphocyte. Based on our previous finding this study was conducted to further characterize immunological function of CTLA-4 especially in terms of involvement of this molecule in T-cell effector function mediating target cell cytotoxicity. 4 human T cell clones with different target cytotoxicities were employed in this study. NBL46 (CD4+) and NBL77 (CD8+) were cytotoxic and NBL32 (CD4+) and NBL58 (CD 8+) were non-cytotoxic to target LBF cell in target cell chromium release assay. And in Western blot assay 34 kD antigen was detected in NBL46 (CD4+) and NBL77 (CD8+) clones but not in NBL32 (CD4+) and NBL58 (CD8+) clones. It was summarized that expression of the CTLA-4 antigen was associated with cytotoxicity but not with subset phenotypes of T cells. In conclusion CD8+ T subset of PHA-stimulated PBL was major and only CTLA-4 producer and this molecule was induced during mid to late stage of T cell activation. The cytotoxicity of T cell clones to its target cell was directly correlated with its CTLA-4 production and vice versa. And it was highly suggested that primary function of CTLA-4 may involved in T cell effector function which mediates target cell killing.

암처리 엽수와 기간이 들깨의 생육 및 개화에 미치는 영향

최영훈,최영환,이영근,김용균,손병구,강점순,김근기 밀양대학교 농업기술개발연구소 2000 農業技術開發硏究所報 Vol.4 No.1

The lower leaves shading in upper leaves is unknown to be reduced significantly due to the early differentiation of flower-bud by dark treatment of leaves when growing perilla for harvesting the leaves in the greenhouse during the winter. This study analyzed the effect of dark treatment of leaves on the growth and regulation of flowering, which are closely related with differentiation of flower and amount of leaves. One leaf and 3 leaves per plant were dark treated for 0, 5, 10 days. Plant hight was reduced in 3 leaves treatment, but there was no difference in 1 leaf treatment. Stem diameter was reduced in both 1 leaf and 3 leaves treatments, which was more significant in 3 leaves treatment. Leaf area was reduced when 1 leaf was treated for 10 days, but there was no difference when 1 leaf was treated for 5 days. When 3 leaves were treated, leaf area was no difference between treatments. However, leaf area which 3 leaves were treated was reduced more significantly than that 1 leaf was treated. Seed weight was remarkably decreased when 1 leaf was treated for 10 days, and it was decreased when 3 leaves were treated for more than 5 days.

The Zoo Story에 드러난 인간관계의 양상

崔容勛 한국현대영미어문학회 2001 The Journal of KACELLS Vol.6 No.1

In the tradition of American drama, Edward Albee has taken a specific place as one of the most competent and intelligent playwrights. Throughout his long career, he has attracted much attention from the audience and critics alike. But his success as a major dramatist was never attained by accident but a natural product of his early interest in writing novels and poems. Albee's early plays are closely related to his individual life. His departure from literary convention and his temperament as a bum have much to do with a tragic situation in which he was placed as a deserted child. Though adopted by a rich family, he couldn't escape from his spiritual wandering and agony. In particular, he was the very picture of criticism against the corrupted bourgeois society. As shown in his careers, his life, in essence, is the continuation of wandering. Roaming along the streets of New York, he saw a lot of people from almost all walks of life. Their lives and expreriences are deeply embedded in his early plays. Particularly noteworthy is the fact that six of his nine early plays are about 'a deserted child' and 'a permanent transient.' In The Zoo Story, Albee touchingly describes a social outcast isolated from other people and the world. The two characters, Jerry and Peter, are the ordinary people we come across on the streets. But they are also the allegory of fundamental human loneliness and alienation regardless of time and place. In Jerry and Peter, we can find the image of ourselves in a modern society. This paper aims to analyze the aspects of human relations as suggested in The Zoo Story. For this, it deals with the four main categories of human relations; the absence of communication, sexual obssession, animalistic nature, and physical contacts and violence. All these concepts have constituted the philosophical background of Albee's plays. His main concern was to suggest a more univeral human situation and a dilemma facing a contemporary society. In The Zoo Story, Albee shows how human relations are distorted and how eager we have been to get out of human isolation and alienation. But he is never a pessimist. By giving religious implications to Jerry's death, Albee suggests the possibility of change in distorted human relations. While caputring the dark side of human relations and the contemporary society, the playwright also talks about new hope and optimism.

양극산화와 절연파괴로 형성한 인산칼슘 함유 티타늄 산화피막의 특성

최원호,이용승,김동환,권용훈,배태성 大韓齒科器材學會 2003 대한치과재료학회지 Vol.30 No.1

This study was performed to investigate the surface properties of electrochemically oxidized pure titanium by anodic spark deposition technique. Titanium plates of 10×10×1 ㎜ were polished sequentially from # 300 to # 1,000 emery paper. They were ultrasonically washed in ethyl alcohol and acetone for 5 min and dried in a desiccator. Titanium plates and titanium screw implants were anodized in an electrolytic solution that was dissolved calcium and phosphate in water. The electrolytic voltage was set in the range of 190-340 V and the current density was 30 ㎃/㎠. The surface oxide film was characterized by X-ray deffractometer(XRD), scanning electron microscope(SEM) and X-ray photoemission spectroscopy(XPS). The main crystal structure of the titanium oxide was anatase type as analyzed with thin-film X-ray diffractometery. The diameter of micropores increased with increasing the spark forming voltage. The porous coatings showed the growth of cell structure and more compact texture with increasing the spark forming voltage. Microcracks were examined in the coating formed at voltage of 340 V. Ca/P ratio in coatings was increased with increasing the voltage.

양측성 관상동정맥루 1예

최용원,오석규,이재훈,이상재,권경희,최은경,김남호,정진원 圓光大學校 醫科學硏究所 2002 圓光醫科學 Vol.17 No.1

저자들은 호흡곤란, 흉부불쾌감, 심계항진 등을 주소로 내원한 환자에서 경흉부 및 경식도 심초음파 검사상 주폐동맥에서 이완기에 전행하는 지속적인 혈류의 흐름을 관찰하고, 관상동맥 조영술을 통해 좌전하행지 중간부위와 우관상동맥 근위부에서 각각 기시하여 공통경로를 이루면서 주폐동맥으로 유입되는 양측성 관상동정맥루를 보이는 드문 1예를 경험하였기에 문헌 고찰과 함께 보고하는 바이다. A coronary arteriovenous fistula is infrequently encountered vascular communication between a coronary artery and a cardiac chamber, a great artery or the vena cava. It is the most common congenital anomaly that can affect coronary perfusion. Bilateral involvement of coronary fistula constitutes an uncommon subgroup of coronary arteriovenous fistulas. A 69 year-old female patient presented with chest discomfort, palpitation, and dyspnea. In the echocardiography, doppler color flow imaging visualized abnormal flow signals with mosaic appearance in the main pulmonary artery during diastolic phase. Coronary angiography revealed arteriovenous fistula arising from the left anterior descending artery and the right coronary artery. Both coronary arteriovenous fistulas drained into the main pulmonary artery. We report a case of bilateral coronary arteriovenous fistula that was confirmed by echocariography and coronary angiography.

알레르기성 자반증 환자에서 캡슐내시경으로 공장궤양을 진단한 1예

이용강,오탁근,최아라,이지훈,김미나,홍성필 고신대학교의과대학 2012 고신대학교 의과대학 학술지 Vol.27 No.1

Henoch-Schönlein purpura (HSP) is the most common form of systemic vasculitis in children. Palpable purpura, arthralgia, arthritis, abdominal pain and renal involvement are the major clinical manifestations. Gastrointestinal involvement is related with abdominal pain and bleeding. We described a 71 year-old female experienced acute exacerbation of HSP presented with gastrointestinal bleeding. She was hospitalized for hematemesis and diagnosed duodenitis by esophagogastroduonenoscopy (EGD). Duodenitis was improved at EGD checked in 7 days. She still complained of melena and abdominal pain. There were no abnormal findings at sigmoidoscopy. Jejunal ulcer and purpura were diagnosed by capsule endoscopy. Symptoms were relieved after administration of systemic steroid. But she needed renal replacement therapy for 3 months. Small bowel ulcer diagnosed by capsule endoscopy in patients with HSP was rarely described in Korean literature. This case suggests that capsule endoscopy have a role in diagnosis of small bowel ulcer and its severity in HSP with gastrointestinal symptom.

반복 작업 근로자들에서의 경견완장애에 관한 연구

최재욱,염용태,송동빈,박종태,장성훈,최정애 大韓産業醫學會 1996 대한직업환경의학회지 Vol.8 No.2

본 연구는 근골격계 질환중에서 대표적인 질환인 경견완장애를 대상으로 일부 제조업 및 전화교환수 근로자에서의 경견완장애의 유병실태 파악, 경견완장애의 정확한 분류 및 향후 진단기준의 개발에 필요한 기초적인 자료 수집에 목적을 두었다. 조사대상은 반복동작에 폭로되는 생산직 근로자 98명, 모전화국의 전화교환수 115명을 대상으로 근골격계 증상호소, 이학적 검사 및 신경학적검사와 기타 혈중 효소등의 임상검사 및 악력의 차이 등을 조사하였다. 조사대상 사업장 중 B사업장은 전자부품을 생산하는 사업장으로, 제품 조립라인의 작업형태는 주야 2교대 근무이며, 앉아서 하는 작업과 서서하는 작업이 혼재 되어있다. A사업장은 전화교환작업, 즉 컴퓨터단말기를 취급하는 작업으로 전원 앉아서 하는 작업이며, 주야 2교대 작업이다. 조사대상 집단의 일반적 특성은 다음과 같다. A사업장 근로자의 평균 연령은 37.9세, 평균 근속년수는 17년이며, B사업장은 평균 연령 37.7세, 평균 근속년수 10.4년이었다. A 사업장은 대상 근로자 115명이 전원 여자였으며, B사업장은 대상근로자 98명 중 남자 68(69.4%)명, 여자 30(30.6%)명이었다. 조사 결과는 다음과 같다. 사업장별 자각 증상 호소율은 A 사업장의 경우 경부 85.2%, 견관절 81.7%, 주관절 34.8%, 완관절 73.0%의 순으로 특히 경부 및 견관절, 완관절의 증상 호소율이 높았으며, 반면 B 사업장은 경부 51.2%, 견관절 56.1% 주관절 23.5%, 완관절 31.3%의 순이었다. 근속년수별 자각증상 호소율은 경부와 견관절의 자각증상 호소율이 40%이상으로 주관절 및 완관절의 지각 증상 호소율에 비해서 상대적으로 높았으며, 경부와 완관절은 근속년수가 증가함에 따라 자각증상에 호소율이 통계적으로 유의하게 증가하였다. A 사업장, B 사업장 모두 최소 22.8% 이상의 근로자(증상 경험자중)가 병원이나 약국을 방문하여 치료를 받았다고 응답하였으며, 사업장 간의 차이는 보이지 않았다. 조사 대상자 전원에게 신경학적 검사와 근전도 검사를 포함한 정밀건강진단을 실시하였다. 정밀건강진단 결과 A 사업장은 질병자가 10명(8.6%), 요주의자가 31명(26.9%), 재검자가 2(1.7%)이었으며, B 사업장은 질병자가 16(16.3%), 요주의자가 12명(12.2%), 재검자 2명(2.0%)이었다. 이러한 이상자의 질병별 유형은 긴장성 경부증후군에 해당하는 사람이 46명으로 이 중 질병자는 13명, 요주의자 30명 재검자 3명이었으며, 수근관증후군은 16명으로 질병자 3명, 요주의자 8명, 재검자 5명이었다. 기타 드퀘르뱅씨병은 5명으로 질병자 4명, 요주의자 1명이었으며, 외측상과염 3명, 이두근개건염 3명, 회전근개건염 3명, 내측상과염 2명, 경추디스트증후군이 5명 등이었다. 사업장별로는 A 사업장의 경우 긴장성경부증후군이 11명, 수근관증후군이 8명, 드퀘르뱅씨병 3명, 경추디스크증후군이 1명이었으며, B 사업장은 긴장성경부증후군이 35명, 수근관증후군이 8명, 드퀘르뱅씨병 2명등의 순이었다. 이러한 결과는 A 사업장의 경우 작업 조건이 의자에 앉아서 실시하는 컴퓨터 작업인데 반하여 B 작업장은 대부분 기립작업, 반복 조립으로 이러한 작업조건에 차이에 기인하는 것으로 판단된다. 경견완장애의 이상소견과 관련이 있는 성별, 연령, 빈도 위험도 점수 및 힘 위험도를 독립변수로 설정하여 다단계 로지스틱 회귀분석을 실시하였다. 경견완장애 이상소견에 통계적으로 유의한 영향을 미친 변수는 성별(p=0.0005), 연령(p=0.0093)이었으며, 힘위험도는 p값이 0.0567, 빈도위험도는 0.0983으로 유의하지 않았다. The purpose of this study is to investigate the current status of and to collect the basic informations of musculoskeletal diseases of upper extremities in manufacturing and telecommunication companies. The subjects were 213 workers, consisted of 98 manufacturing workers and 115 telephone operators. The musculoskeletal symptom survey, job safety analysis(JSA), and medical examinations including neurologic and nerve conduction velocity(NCV) test were conducted. All workers were women in company A, while the other composed of 68(69.4%) men and 30(30.6%) women. The results were as follows: 1. The rates of self-reporting symptoms in each company were 85.2% at the neck, 81.7% at the shoulder joint, 73.0% at the wrist joint and 34.8% at the elbow joint in company A, while 56.1% at the shoulder joint, 51.2% at the neck and 23.5% at the elbow joint in company B in order. 2. No relationship was observed between the work duration and symptom rate in company A, but the highest symptom rate was observed at the neck in 10-19 year work duration group, at the shoulder, elbow and wrist joint in 5-9 year work duration group in company B. 3. Over the 22.8% of total workers in this study having symptoms got medical treatment at the medical clinics or drug stores, but there was no statistical difference between both companies. 4. In company A, 16(13.9%) workers were classified as D category, 12(10.4%) workers as C category and 2(1.7%) workers as R category among 115 workers. And D category was 10(10.2%), C category 31(31.6%) and R category 4(4.0%) among 98 workers in company B. D category means disease category needed futher treatment, C category means disease category needed no treatment and R category means recheck category needed futher evaluation. 5. The types of musculoskeletal disorders including D, C, and R category were 46 cases(D 13, C 30, R 3)of tension neck syndrome (TNS), 16 cases(D 3, C 8, R 5) of carpal tunnel syndrome (CTS), 5 cases of De Quervain's disease, 3 cases of lateral epicondylitis, 3 cases of bicipital tendinitis, 3 cases of rotator cuff tendinitis, 2 cases of medical epicondylitis, and 5 cases of cervical disc syndrome. 6. In company A, the total cases of 11 TNS, 8 CTS, 3 De Quervain's disease, 3 lateral epicondylitis, 3 rotator cuff tendinitis and 1 cervical disc syndrome were diagnosed and so were total cases of 35 TNS, 8 CTS and 4 cervical disc syndrome in company B. 7. By stepwise multiple regression analysis with dichotomization of musculoskeletal disease, the following odds ratios were significantly high(p<0.05)-sex(2.707) and age (1.926).