치과 기공사들에게서 나타나는 호흡기 증상과 이의 관련 요인

김웅철,오세윤,김지환,김진완,이준석,이가영,이세훈,유진호,김태석 高麗大學校 倂設 保健大學 保健科學硏究所 2001 保健科學論集 Vol.27 No.1

This study was carried out to investigate subjective respiratory symptoms and their attributable factors in Korean dental laboratory technicians. A questionnaire was mailed to randomly selected 1,900 dental laboratory technicians. Among them, 1,344 dental technicians completed the questionnaires and returmned them. Validity and reliability tests on the questionnaires were carried out before the main survey. To investigate risk factors on respiratory subjective symptoms, we performed analysis on distribution of characteristics, and then investigated univariate analysis and multiple logistic regression analysis. The prevalence rate of wheezing, cough and phlegm, and dyspnea was 4.8%, 33.9%, 54.9%, respectively. Statistically significant factors inducing subjective respiratory symptoms by multiple logistic regression analysis were sex, smoking, exercise, health examination, work hours a day, investment gas, investment dust, metal fume, resin vapor, and asbestos dust. Considering the results above, it seems that most subjective respiratory symptoms are related with health habits and occupational environmental-related factors. The result, consideration in mind, suggest that health promotion programs for smoking cessation, regular health examination, and physical exercise in health habit, and improvement on casting and resin work in dental technological environment be necessary.

韓國人의 各 臟器組織中 靑酸鹽의 微量分布에 關한 硏究(Ⅱ)

張成吉,金恩浩,金英雲,李鎭勳,柳在薰,權五星,金明德,吳世珍,金由那 內務部 國立科學搜査硏究所 2001 國立 科學 搜査 硏究所 年報 Vol.33 No.-

요와 농 검체에서의 Vancomycin 내성 장구균 분리 2예

김성규,김문정,권오헌,김준명,정석훈,정윤섭,이경원,전세일 대한감염학회 1996 감염 Vol.28 No.4

65세 여자 환자의 요 검체에서 vancomycin 내성 E. faecalis를, 욕창의 농에서 vancomycin 내성 E. faecium을 분리하였는데, 환자의 병력으로 미루어 미국에서 정착된 세균에 의하여 감염되었을 것으로 생각되었다. 분리 균주에 대한 vancomycin의 MIC는 각각 258과 32㎍/mL, teicopoanin은 0.25, 0.5㎍/mL이어서 VanB 표현형으로 추측되었다. 우리 나라에서의 VRE 확산을 예방하기 위한 조치의 일환으로서 의사를 포함한 병원 직원에게 VRE 감염증의 심각성을 홍보하여야 하며, 미생물검사실에서는 임상검체에서 분리된 장구균의 vancomycin 내성을 시험하고 장내 VRE 보균자의 주기적 검색이 필요하다고 사료되었다. Vancomycin-resistant Enterococcus faecalis and E. faecium were isolated from urine and decubitus ulcer discharge, respectively, from a 65-year-old woman. Proir to the transfer to this hospital in December, 1995, she had been admitted to the Chicago Rehabilitation Center in the U.S. for the treatment of olivopontocerebellar atrophy, quadriplegia, and neurogenic bladder. She was also treated with multiple antimicrobials including vancomycin for pneumonia at intensive care unit, which suggested that she acquired the organisms in the U.S. The minimal inhibitory concentrations of vancomycin and teicoplanin against the isolates were: E. faecalis 256 ㎍/mLand 0.5㎍/mL; E. faecium 32 ㎍/mL and 0.5 ㎍/mL, respectively. The susceptibility patterns suggest the isolates are vanB type. Although other species of vancomycin-resistant Enterococcus spp. were reported previously in Korea, these isolates may be the first vancomycin-resistant E. faecalis and E. faecium from clinical specimens.

뇌졸중 및 뇌손상 환자의 경관 유동식이에섬유소 첨가시 설사에 대한 효과

전세일,김동아,온석훈,조성래,서정훈,윤태준,유성,전중선,김정남,윤지영 大韓再活醫學會 2000 Annals of Rehabilitation Medicine Vol.24 No.5

연제련 근로자들의 만성적 연폭로에 관한 연구

이세훈,조영선,김정만,이은영 가톨릭대학산업의학센타 산업의학연구소 1985 韓國의 産業醫學 Vol.24 No.1

For the purpose of obtaining of effective biological monitoring data, studies to evaluate the health consequences of lead absorption were conducted smelter workers who have been exposed to lead occupationally. The 103 smelter lead workers and the 102 smelter non-lead workers were observed and the questionnaire covered age, work history, symptoms possibly associated with lead poisoning. The biological parameters chosen for this study were as follows; blood lead(PbB), urine lead(PbU), δ-aminolevulinic acid in urine(ALAU), coproporphyrin in urine(CPU), zinc protoporphyrin in whole blood(ZPP), hemoglobin(Hb), δ-aminolevulinic acid dehydratase(ALAD) activity & ALAD activity ratio(A/R; absorbance at substrate pH 6.6/absorbance at substrate pH 5.8). The results obtained were as follows; 1. The average age were 39.1±7.4 years and 39.2±7.7 years in smelter lead workers and smelter non-lead workers, respectively. In smelter lead workers and smelter non-lead workers, the average work duration were 131.7±63.3 months and 138.1±63.1 months, respectively. 2. The mean value of blood lead were 45.0+8.8㎍/100ml and 36.4±6.8㎍/100ml in smelter lead workers and non-lead workers, respectively. In smelter lead workers and non-lead workers, the mean value of zinc protoporphyrin were 89.6+45.1㎍/100ml and 46.5+21.5㎍/100ml, respectively. The mean value of other biological parameters except ALAD & A/R of smelter lead workers were in normal range. 3. Among various pairing of the biological parameters of lead exposure in smelter lead workers and smelter non-lead workers, the correlation between PbB & ZPP showed highest coefficient value. 4. A simple regression analysis was done between PbB and ZPP, and between PbB and CPU, taking PbB as a dependent variable. In smelter lead workers and smelter non-lead workers, coefficients of determination between PbB and ZPP were 67.1% and 59.2%, respectively. Also, the coefficients between PbB and CPU were 45.1% and 26.7%, respectively Consequently, ZPP is better indicator than CPU in estimation PbB levels in screening test of lead absorption. 5. Gastrointestinal compliants were the most frequent self-reporting symptoms. As more frequent are the compliants, the mean concentration levels of PbB and ZPP increased.

백서에서 자가 피부이식후 항T임파구 단일클론항체 분포에 관한 면역조직화학적 연구

朴晩圭,金慶助,任昌俊,高世勳 단국대학교 치의학연구소 1991 논문집 Vol.3 No.-

This article is intended to study histopathological and immunohistochemical response after autogenous full-thickness skin graft in rat. 12 male Sprague-Dawley rats were used as the experimental animals. A 1 cm×1 cm skin (0.7mm diameter) was taken on the right inguinal area of the rat. Another full-thickness skin graft (1cm × 1cm) was taken from the left inguinal area of the rat. And it was transplanted to the right inguinal area of the rat. The left side wound was closed directly. Light microscopic observation was made at the postoperative 1, 3, 8, 16 day, after the hematoxylin-Eosin staining of the 4u-thick paraffin embedded specimens and the immunohistochemical staining of the 10u-thick frozen specimens with mouse anti-rat monoclone antibodies and ABC staining kit. The results were as follows. 1. Electromicroscopic studies revealed interstitial tissue bleeding of transplanted autogenous skin. The response was severe in the 1 day group after operation, moderate in 3 day group, mild in 8 day group, and almost resolved in the 16 days group. 2. Electromicroscopic studies also revealed a mild monocyte response in the 3 day and 8 day groups. A histiocytic infiltrate was observed. There was a mild response in the 3 day group and moderate response in the 8 day group. 3. Immunohistochemically studies revealed a few pan T cells in the 1 day group, mild appearance of pan T cells and cyototoxic T cells in the 3 day group, a moderate infiltrate of pan T cells and helper T cells in the 8 day group, and total resolution of pan T cells in the 16 day group. 4. According to these finding, a strong inflammatory response was observed around transplanted autogenous skin in the 3 & 8 day groups. In the 16 day group this response had resolved histopathologically and immunohistologically.

生體血의 保存環境과 腐敗産物에 依한 血中알콜濃度變化에 關한 硏究

張成吉,金英雲,柳在薰,吳世珍,權五星,朴世延 內務部 國立科學搜査硏究所 2001 國立 科學 搜査 硏究所 年報 Vol.33 No.-

스프레드시트 방식의 OLAP 인터페이스를 위한 시트 분할 기법

신성현,이수안,최훈영,김진호,문양세 강원대학교 정보통신연구소 2007 정보통신논문지 Vol.11 No.-

OLAP(Online-Analytical Processing) is widely used to analyze multidimensional data extracted from a huge size of source operational databases and to provide a useful information for business decision making. OLAP tools provide a variety of ways to analyze and to browse data which are not familiar with end users. But spreadsheet tools like MS Excel are very popular in real-world to calculate some statistics from source data and to analyze them. In this research, we implemented a spreadsheet-like tool on the top of relational databases to support OLAP operations and to browse the results of analytical queries. For implementing the tool, we propose a sheet partition function for spreadsheets which partitions a relational table into multiple sheet based on the number of rows or (dimensional) attribute values. This function can enable users to view a physically stored table as a set of spreadsheets like Excel thus users can browse the stored table as if it is spreadsheets. With this spreadsheet-like interface, users will be able to handle multidimensional data stored in relational databases in more user-friendly way.

Mo 화학기상증착에 있어서 불순물 농도에 미치는 증착조건의 영향

배상석,서성교,홍은식,김승모,조미정,한혜정,이두성,김세훈,민석홍 국립7개대학공동논문집간행위원회 2001 공업기술연구 Vol.1 No.-

The thermal decomposition process of Mo(CO)_6 on chemical vapor deposition was investigated by analyzing the effects of deposition temperature, pressure, and reaction gas on the phase change of deposited films. Mo_2C was deposited at or below 350℃ due to the incompleteness of thermal decomposition of Mo(CO)_6, but Mo films was successfully deposited at 400℃ or higher temperatures. The variation of deposition pressure did not change the dependence of decomposition process on deposition temperature. The activation energy of surface reaction was 5.8 ㎉/mole.

Linear and nonlinear optical properties of single component $Sb_2O_3$ system

Kim, Sae-Hoon,Chung, Yong-Sun The Korea Association of Crystal Growth 1997 韓國結晶成長學會誌 Vol.7 No.3

진공급냉법을 이용하여 단성분계 $Sb_2O_3$ 유리를 제조하였다. 선형굴절율은 500-1000 nm 범위내에서 측정하였으며, 굴절율은 633 nm에서 2.0이었다. 에너지갭은 3.38 eV 이었으며, 3차 비선형 광학 감수율을 THG법을 이용하여 측정하였으며 단성분계 Silica 유리보다도 20배 큰 $5.68{\times}10^{-13}$ esu의 측정값을 얻었다. A single component of $Sb_2O_3$ glass has been obtained by a rapid quenching method in vacuum. The linear refractive indices were measured as a function of wavelength from 500 nm to 1060 nm. The refractive index at $n_{3{\omega}}$/(633 nm) was as high as 2.00. The optical band gap was estimated as 3.38 eV from the optical absorption spectrum. The third-order nonlinear optical intensity was determined by the third harmonic generation (THG) method. The $\chi^{(3)}$value was as high as $5.68{\times}10^{-13}$esu, about 20 times larger than that of $SiO_2$ glass.