농촌지역 주민의 농기계에 의한 손상에 관한 연구

양한설,이태용,이동배,조영채,심운택 충남대학교 의과대학 지역사회의학연구소 1991 충남의대잡지 Vol.18 No.2

To find out the incidence rate of farm machinery injuries for rural residents and to analyse characterisitics of injuries, we surveyed 10,075 rural residents from six Myons in Chungnam province from January 1, 1990 to Deccember 31, 1990 The results were as follows: 1. 94.4%(101 persons) of the injured were male; 5.6%(6 persons) female. 2. The annual incidence rate per 1,000 rural residents was 10.6 persons, and the annual incidence rate per 100 farm machines was 11.2 persons. 3. The number of the injured were more in mountainous district than in plain distict 4. Injuries were occured throughout the year but predominantly in April and October. Farm machines which caused accidents were power tillers, combine, and a farm tractor in that order of frequency. 5. The injured part of body were fingers and arms, foot and legs, the chest, and the waist in that order of frequency. 6. Most of the injured had been to medical institution for treatment. 7. The major cause of injuries was personal factor.

심실 중격 결손에 의한 감염성 심내막염 환자의 치과치료

양정현,현홍근,김영재,김정욱,장기택,이상훈,한세현,김종철 대한소아치과학회 2007 大韓小兒齒科學會誌 Vol.34 No.3

좁쌀약주 釀造를 위한 균주의 선발

梁榮澤,高正三,康順善 濟州大學校亞熱帶農業硏究所 1991 亞熱帶農業硏究 Vol.8 No.-

As the manufacturing techniques of foxtail millet wine, a traditional wine in Cheju island, has been transfered by person to person, basic studies on this are not carried out yet. There are many difficulties to industrialize it successfully without improvement of wine quality. The purposes of this study were to screen saccharifying mold strain and brewing yeast for foxtail millet wine-making. Optimum reaction conditions of crude enzyme of Aspergillus oryzae on saccharifying soluble starch were 55℃, pH 5.6, Saccharifying activity of crude enzyme was maintained 31.0~35.4% at 20~25℃, fermentation temperature, compared to optimum enzyme reaction conditions. Saccharomyces cerevisiae IAM 4274 was selected as brewing yeast strain for foxtail millet wine-making.

Craves병 환자에서 백혈구와 갑상선 조직의 HLA-DR β 유전자 부위의 비교

양인명,우정택,팽정령,서광식,김성운,김영설,김광원,최영길 경희대학교 유전공학연구소 1989 遺傳工學論文集 Vol.1 No.-

정상 갑상선세포에서는 HLA-DR 항원이 발현되지 않았으나, 그레이브스병 환자의 갑상선세포 표면에는 HLA-DR 항원이 발현됨이 보고되어, 이러한 현상은 이 질환의 자가면역 기전에 중요한 역할을 하고 있을 것으로 생각되고 있다. 한편 최근 DR이나 DQ 유전자의 상부 159kb 이내에는 이들의 발현을 조절하는 유전자가 존재함이 알려져 있고, 이 부위의 구조적인 변화로 인하여 DR DQ 유전자의 발현을 유도하는 여러 가지 핵내 인자들과 interferon-r 와 같은 외부인 자들이 보고되고 있다. 그러나 그레이브스병에서 이들 유전자 부위의 구조적인 변화에 관해서는 아직 보고가 없다. 이에 본 연구자 등은 이러한 가능성 여부를 규명하고자 2명의 전형적인 그레이브스병 환자의 수술 우 얻어낸 갑상선 조직에서 RNA를 분리한 우 DR β유전자를 소식자로 northem blotting을 하여 mRNA의 발현을 관찰하였으며, 말초혈액 백혈구와 갑상선 조직으로부터 분리된 DNA를 EcoRI BamHI. HindⅢ PvuⅡ TaqI, PstI등의 6가지 제한효소로 소화한 후 DR β유전자를 소식자로 하여 RFLP 양상을 비교한 결과, 환자 모두에서 mRNA의 발현이 관찰되었으나, 환자 모두에서 6가지 제한효소에 의한 RFLP 양상이 동일하였다. 이러한 결과는 Graves병 환자의 DR 유전자의 발현에 있어서 이 유전자 부위의 구조적인 변화가 관여할 가능성이 적음을 시사하는 사실이라고 사료되나 향후 더 많은 예와 더 많은 제한효소를 이용한 주시가 필요할 것이다. The requirement for major histocompatibility antigen class Ⅱ molecules in the recognition of antigen by helper T cells suggests that the expression of class Ⅱ antigen may be important in the initiation and prolongation of immunopathology. HLA class Ⅱ antigenes are expressed on the surface of thyrocytes of the patients with graves disease. The increased expression of class Ⅱgene can be induced by trans acting factor such as interferon However the possibility of rearrangement of their regulatory genes has not been explored so far. We studied the mRNA expression in the thyrocytes of 2 patients with Graves' disease and compared the restriction fragment length polymorphism (RFLP) between thyroid and peripheral leukocyte DNA. The prominent expression of mRNA was observed in the thyroid tissues of all the two patients. But we did not find any difference in RFLP pattern in both patients. These results suggest the possibility that the rearrangement of the regulatory gene located in the upstream of DR- β gene can be a role in expression of DR antigen is less likely.

인장하중을 받는 의사등방성 복합재 적층판의 피로손상

양광영,임경택,이동하,김택현,김인권 朝鮮大學校 機械技術硏究所 1999 機械技術硏究 Vol.2 No.1

The purpose of this work is to investigate fatigue damage of quasi-isotropic laminates under tensile loading in different directions. Low cycle fatigue tests of [O/-60/+60]s laminates and [+30/-30/90]s laminates were carried out. Materials systems used are AS4/Epoxy and AS4/PEEK. The fatigue damage of [+30/-30/90]s is very different from that of [O/-60/+60]s. The position of delamination generated at AS4/Epoxy and AS4/PEEK laminates were differentiated by the matrix difference that is, we suppose, the value of both G (critical energy release rate of mode-I) and G (critical energy release rate of mode-Ⅲ) difference. The experimental results are compared with the result obtained from the method of determining strain energy release rate components proposed by the authors.

졸-겔법에 의한 Mullite 코팅막의 제조 및 특성에 관한 연구

이용택,최영우,양중식 慶熙大學校 材料科學技術硏究所 1997 材料科學技術硏究論集 Vol.10 No.-

출발원료로 알루미늄 세크 부톡사이드(ASB)와 테트라 에톡시실란(TEOS)을 사용하는 졸-겔법에 의해 뮬라이트 조성의 졸 용액을 제조하고, 지지체 표면위에 침지 시간의 변화에 따라 코팅을 실시하였다. 그 결과 뮬라이트 결정화를 위해서는 1,300℃이상의 열처리 조건으로 균열 없는 뮬라이트 코팅막을 제조하는 것이 가능하였으며 침지시간에 따라 코팅막의 두께가 선형적으로 증가하고 평균 기공의 크기는 20∼30Å까지 기공 제어가 가능하였다. Optimal Mullite sol was synthesized by sol-gel process using Aluminium sec-butoxide(ASB), Tetraethoxy-silane(TEOS) and then, Mullite films were dip-coated with various holding time in sol bath and heat-treated at 1300℃ above for crystallization. The thickness of coated film increased linearly with holding time in sol bath and average pore size was controllable within 20-30Å.

마이크로컴퓨터를 利用한 設備配置

朴永宅,梁正會 成均館大學校 科學技術硏究所 1987 論文集 Vol.38 No.1

This study presents a microcomputer program for a facility layout that uses the relationship chart which represents interdepartmental relationships. The program presented here is written in BASIC language. The program uses the following three-stage algorithms: (1) Selection of placement order 1) Select a department having the largest total closeness rating. 2) Search for a department with a interdepartmental interation of the highest closeness rating with the last selected department. If the rating is higher than minimal acceptable closeness rating, return to 2). Otherwise, search for one of the unselected department having the largest total closeness rating, return to 2). (2) Placement pattern Department placement starts at the center of the screen and spirals outward until the layout is established. (3) Layout scoring The distance from each department centroid to the others is multiplied by the corresponding closeness rating and summed to give the total score. The presented algorithm was tailored after that of Gaston, but our algorithm improved the Gaston's as follows: 1) The first selection of a department was based on the total closeness rating instead of random selection. 2) The possible distance measures are rectilinear, euclidean and squared euclidean distances instead of the rectlinear distance alone. 3) Preassigned departments such as aisles, stairwells, etc. can he located in advance.

불악산(경기도)의 식물상에 관한 연구

안영희,안영철,최광율,박대식,정연택 중앙대학교 유전공학연구소 2001 遺傳工學硏究論集 Vol.13 No.1

Field surveys were carried out 3 times from 2000 5. 17 to 2000. 6. 4. Main results obtained from this study wet·e as follows : 1.The vascular Plants in Mt. Bull-ak were consisted of 221 taxa such as 71 families, 163 genera, 188 species, 30 varieties, 2 forma, 1 hybrid. 2.Family Compositae and Gramineae covers 8.6% and 7.2% of total number of naturalized plants, respectively. 3.Pteridophyte, Gymnosperm, Dicotyledon and Monocotyledon covers 2.5%, 2.7%, 75.9% and 18.1% of total number of naturalized plants, respectively. 4.The life cycle of the plants was annual 11.8%, biennial 11.3%, perennial 76.9%. As it compared with consistency ratio in the flora of Korea, the distribution of biennial appeared highly. 5.The highest peak of blooming month is May (49.3% among total number of naturalized plants). 6.In this area the Korean endemic plants are 5 taxa (2.3% among total number of naturalized plants). 7.Number of naturalized is 20 taxa (9.0% among total number of naturalized plant)

인슐린 주사제의 고충실 액체색층기 분석

우정택,팽정렬,김성운,양인명,김진우,김영설,김광원,최영길 최신의학사 1993 最新醫學 Vol.36 No.8

흰쥐 뇌에서 Tyrosine Hydroxylase분비세포의 출현시기 및 분포에 관한 면역조직화학적 연구

정윤영,선희매,김영택,김남훈,안계훈,장인엽,김종중,문정석,강양수 조선대학교 부설 의학연구소 1999 The Medical Journal of Chosun University Vol.24 No.1

The immunohistochemical (ABC method) studies on the ontogeny and localization of the catecholamine-synthesizing enzyme tyrosine hydroxylase (TH) were examined in rat brain from the 12th fetal day until the 9th postnatal day. The results obtained were as follows : 1. Tyrosine hydroxylase was first detected immunohistochemically at embryonic day 13(E13). At this stage, the TH-containing neurons were still migrating and cytologically immature. 2. The changes occuring from the early to the late prenatal stages of development appeared to be the result of an increase in the number and size of the TH-containing cells and in the length of nerve fibers. 3. The distribution of the TH-containing neurons at embryonic day 19(E19) more closely resembled catecholaminergic neurons in the adult rat brain : 1) a rhombencephalic group became the A1-7 ; 2) a ventral mesencephalic group became A8-10 ; 3) a ventral prosencephalic group and a few neurons ventral to the striatum became A11-14 ; and 4) the cells of the olfactory bulb corresponded to the A15. 4. The cytodifferentiation of the TH-immunoreactive neurons was accompanied by continued migration to form the collective catecholaminergic groups during ontogenesis. In addition, the morphology of the TH-immunoreactive neurons in the late prenatal stage resembled in the adult rat brain.