판막 질환에서의 심근 섬유화 : 심근 조직을 이용한 형태학적 연구 및 혈청 생화학적 지표의 분석

강수진,박덕우,송재관,박경민,송종민,강덕현,한기훈,송현,이재원,주석중,송명근,김정선 대한순환기학회 2004 Korean Circulation Journal Vol.34 No.2

Barium-Ferrite에서의 첨가제의 영향

송종훈,오영우 경남대학교 신소재연구소 1992 論文集 Vol.2 No.-

고보자력(high coercivity)의 Ba-ferrite를 합성하기 위하여, 초기 원료의 혼합과정에서 첨가제인 P₂O_{5}, Na₂O등을 첨가하여 이들의 자기특성에 미치는 영향을 확인하였다. SEM분석 결과 첨가제는 Ba-ferrite의 입자성장을 억제시키고, 밀도를 증가시킨 잔류자속밀도 및 보자력의 값을 동시에 증가시키는 효과를 가져왔다. In order to obtain the high-coercive ferrite, P₂O_{5}, Na₂O and K₂O were added in Ba-ferrite. For the liquid coats each grain, the materials may often be sintered to a higher density a t a low temperature with less of a tendency for exaggerated grain growth and improve the magnetic properties. The effects of additives on Ba-ferrite prepared by dry method were investigated. The experimental results are as follow. 1) Additives impeded grain growth when sintering, and thickness(t) increased with a decrease the D/t value. 2) Coercive force and remanence of Ba-ferrite were improved by the addition of P₂O_{5}-K₂O and P₂O_{5}-Na₂O.

신냉매용 자동차 에어콘 시스템에서 팽창밸브의 특성 해석

송유호,박종일,홍희기,김경훈 경희대학교 산학협력기술연구원 1996 산학협력기술연구논문집 Vol.2 No.-

This study was performed to design the optimal Block Type Expansion Valve through analyzing the characteristics of the Block Type Expansion Valve in automotive air conditioning system using HFC-134a. To make easy flow control and pressure drop, the main function of Block Type Expansion Valve, a preliminary experiment on 3 kinds of orifice(Rectangular Type, Diffuser Type, Cone Type) was carried out and the flow characteristics in Expansion Valve was analyzed. Based upon the results of the experiment, 2 types of Block Type Expansion Valve were installed in automotive air conditioning system using HFC-134a and the characteristics of the 2 types of Block Type Expansion Valve were analyzed and compared under variation of compressor RPM.

소음성 난청 선별검사용 문진표의 유용성

송재석,최병수,원종욱,노재훈 大韓産業醫學會 2000 대한직업환경의학회지 Vol.12 No.4

목적 : 소음 특수건강진단시 문진표의 유용성을 알기 위하여 실시되었다. 방법 : 자료로는 전국을 5대 권역으로 나눈 후 연구에 협조적인 산업보건기관을 대상으로 하여, 소음성 난청이 발생한 사업장과 그 부서에 대하여 정상인 근로자의 검진기록과 작업환경측정 기록 및 문진표를 수집하여 분석하였다. 결 과 : 각각의 문진 항목과 청력이상 여부에 대한 분석결과, 귀에서 소리가 난다고 하는 항목과 최근 작은 소리가 잘 안들린다고 하는 만성 특이적 항목만 청력이상 여부와 관계가 있었고, 급성 항목들은 청력 이상 여부와 통계적 연관성이 없었다. 또한 7개의 설문 항목과 연령 및 근무경력만을 이용하여 청력이상을 판정한다고 하였을 때, 실제 건강진단 결과와 비교하게 되면 민감도, 59 %, 특이도, 88 %로 계산 되었으며, 평균 23 %정도가 잘못 분류되었다. 결 론 : 만성적이고 특이적인 항목을 위주로 한 단순하고도 판별력있는 항목의 개발이 필요하며, 이러한 항목들을 전산화하였을 때, 효과적인 소음성 난청의 선별검사 체계를 구축할 수 있을 것이다. Objectives : This study was performed to investigate the effectiveness of the questionnaire. Methods : Workers'health examination records, work environment record, and questionnaires of selected industries as samples were analysed using logistic regression analysis and discrimination analysis Results'Cases of bearing impairment (Dl+C) as dependent variables, and age, work duration and level of environmental noise as independent variables were selected for multiple unconditional logistic regression analysis. Odds ratio was 4.04 in hearing difficulty, 2.78 in tlnnitus and 1.08 in age. In the second analysis Noise induced hearing loss is selected as dependent variable. The OR in hearing difficulty was 3.67(95 % C.1. : 1.61 8.61), and was 1.09(95 % C.1. : 1.05-1.14) in age. Conditionnal multlple logistic regression analysis was performed. In hearing impairment as dependent variable, the OR of age was 1.02(95 % C.1. : 1.00-1.04) and other variables were not significant. However, NIHL as dependent, the OR of hearing difficulty was 4.57(95 % C.1. : 1.43-14.67). According to multiple logistic regression adopting each items of questionnaire as dependent variable, the only item of hearing difficulty showed significant difference with hearing ability. The discrimination analysis was performed with the class variable of hearing impairment, and discrimination variables of age, work duration, and environment noise level. The sensitivity of 59 %, and specificity of 88 %, and average error count of 23 % were obtained. When the numbers of items answered in questionnaire were assumed as the parameter of judgement for noise induced hearing loss (NIHL), the highest sensitivity and specificity were 33.5% and 49.0% in cases of more than two items answered. Conclusions : The development of items that is simple and discriminative mainly consisted of chronic and specific diseases related items is needed. Computerization for newly developed items might be needed to establish effective surveillance system for NIHL in the future.

男左女右에 對한 臨床的 考察 : 男左女右 中風中心

송인선,김일수,최승훈,오민석 대전대학교 한방병원 2002 惠和醫學 Vol.11 No.1

In oriental medicine, man is yang(陽) and woman is eum(陰). Qi(氣) is yang and blood(陽) is eum. Right side is yang and Left side is eum. Man have more Qi than woman. Woman have more blood than man. Right side is man's dominant side and left side is woman's dominant side. Therefore left side is likely to man's affected side and right side is woman's affected side. We researched correlation between sex and affected side in CVA(cerebulovascula accident) and concluded that sex and affected side in CVA is not related.

대망에 발생한 방선균증 1례

송상훈,심찬섭,이문성,김진오,조주영,김영석,문종호,이진우 순천향의학연구소 1999 Journal of Soonchunhyang Medical Science Vol.5 No.1

Actinomycosis is an uncommon chronic suppurative disease characterized by multiple abscess, draining sinuses, abundant granulation, and dense fibrous tissue, caused by the actinomyces organisms. It occurs in three major sites: cervicofacial, abdominal, and thoracic. The abdomen is the second most common involved site in previous studies, and there are three ways this organism can affect the gastrointestinal tract: through a blood-borne infection, by swallowing, or by proliferation at a more distal intestinal area. Abdominal actinomycosis is an unusual disease but remains an important differential diagnosis in patients with abdominal mass. Obtaining the diagnosis is difficult and rarely made preoperatively, but provide the key to its management. Medical therapy is effetive in eradicating the disease; however, because of the large amount of reactive fibrosis formed by the infection, it requires long-term therapy. Surgical treatment may be essential in many cases, primarily when malignancy cannot be excluded or if extensive necrotic tissue exists. There are a few description for actinomycosis involving omentum. We report a case of patient with omental actinomycosis, suspected to have a malignancy requiring an exploratory laparotomy with resection.

외안각 절제술과 경결막 절개에 의한 안와 접근법

정종철,김성범,서지훈,송민석,전창훈,최세훈,김현민 대한악안면성형재건외과학회 2002 Maxillofacial Plastic Reconstructive Surgery Vol.24 No.4

Various surgical approaches to the orbits have been used. But the transconjunctival approach, also called the inferior fornix incision, provides adequate access to the orbital floor with esthetic results. Additionally, transconjunctival approach with lateral canthotomy allows more wide surgical field and good access to the orbital area. Generally, preseptal approach is more used rather than postseptal approach in the transconjunctival incision for the prevention of fat herniation during surgery. There are some complications in transconjunctival approaches but these complications can be prevented with careful surgical techniques. We report clinical results in 12 patients who were treated by preseptal transconjunctival incision with lateral canthotomoy for the treatment of orbital trauma. We were satisfied with this technique for reduction and reconstruction of the orbital trauma and we could also observe relatively good esthetic results.

하치조신경 및 설신경 손상 평가를 위한 한국인 정상 성인의 하순-이부 및 혀의 감각 조사

이종호,이세영,송승일,이은진,안강민,김성민,명훈,황순정,서병무,최진영,정필훈,김명진 大韓顎顔面成形再建外科學會 2003 Maxillofacial Plastic Reconstructive Surgery Vol.25 No.2

In the head and neck area, there are so many sensory nerves, which are sometimes injuried iatrogenically or inadvertently so that involved patients complained of the loss of sensations. In such cases, it is important to judge the degree of injuries and regeneration of nerve for better diagnosis and treatment. Seddon and Sunderland's classification, which is commomly used, is focused on histological change and nerve conduction. As times goes by, it is difficult to access patient's sensory disturbance by this method. Until now, so many methods such as contract threshold, direction, two-point discrimination, pin prick, thermal discrimination and current perception threshold have been introduced for sensory evaluation. However, there hasn't been enough information regarding each methodology nor integrated standard methodology for the measurement. the purpose of this study is to get Korean adult normative sensory values of lower lip,chin and tongue using modified methods of contact thershold, ditection, two point discrimination, pin prick, thermal discrimination and assess degree of regeneration of sensory nerve damage.

高等學校 排球選手에 있어서 스포츠傷害의 心理的 要因硏究

민경훈,송채훈,박종남 서강정보대학 1993 論文集 Vol.12 No.-

This study examines the relationship between psychological factors and sport injuries in high school volleyball player and offeris data to improve concentration of team's power. The subjects have collected from 126 high school volleyball players(male:72,female:54) participating The Third Mooduying Cup High School Champianship Volleyball Contest. The factors of this study are A type behavior, locus of control,life event,history of injury, and social support. The results are as follows; 1. Most of all experience three sport injuries, are state of "moderate crisis, and male have more than female in history of injuries. 2. A type behavior, history of injury, and life event scale have an effect to take place sport injury in all players. But other factors are not related to sport injury.

RAW264.7 세포에서 interferon-r 및 LPS에 의해 유도되는 NO생성에 미치는 TALT-35의 영향

박종일,박경석,김종석,박지훈,윤은진,송경섭,서강식,김훈,윤완희,박승길,임규,황병두 충남대학교 생물공학연구소 2006 생물공학연구지 Vol.12 No.-

TALP-35 purified from human term placenta is known to increase microtubule polymerization and stabilize the polymerized microtubule. To examine the effect of TALP-35 on immune system this study was performed. MTT assay was performed to investigate the effect of TALP-35 on the proliferation of RAW264.7 cells. TALP-35 dose dependently suppress the proliferation of RAW264.7 cells at high concentration (above 1 μM) in unstimulated cells, in case of 10 μM TALP-35 treated cells the suppression was 25% but in stimulated cells it was only 15%. Cosedimentation assay was carried out to investigate whether TALP-35 can bind to tubulin of RAW264.7, monocyte/macrophage lineage of mouse, and polymerize it. TALP-35 polymerize the tubulin of RAW264.7 cells and sedimented in dose-dependent manner. To investigate the effect of TALP-35 on the expression of iNOS protein western blotting was performed. The expression level of iNOS was decreased dose dependently in high concentration of TALP-35 treatment. To examine the activity of iNOS, secreted NO was determined by method based on Griess reaction. Interferon-γ and LPS-stimulated production of NO from RAW264.7 cells was decreased dose dependently above 0.1 μM concentration of TALP-35 and 50% is decreased at 10μM of it. This study shows TALP-35 can control cytokine induced-iNOS expression therefore it might control inflammatory diseases.