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이경룡,구홍두,박인철,김승환,장석준,심호식 대한응급의학회 1995 대한응급의학회지 Vol.6 No.2
To reduce the degree of overcrowding in level Ⅲ emergency care centers, authors have conducted a prospective study of patient who were transferred to level Ⅰ or Ⅲemergency center based on the non-emergent patient guideline currently used at the severance Hospital, level Ⅲ emergency center, during the period of 65 days from Jan. 1st 1995 to Mar. 6th 1995. Followings are guideline for non-emergent patient described by the Korean government low: 1) systolic blood pressure greater than 80/100 of normal. 2) respiration rate between 10 to 24 per minute. 3) pulse rate between 60 to 100 per minute. 4) body temperature between 36 to 37.5℃ by rectal. 5) relatively alert mental status. 6) patient not requiring emergency operation at the time of examination. The results were as follows: 1. Among the total 5,301 patients, 464 patients ranged from age of 1 to 82 years old were transferred to level Ⅰor Ⅱ emergency center after simple treatment. 2. Among the 464 patients, 276 patients were treated in expected hospital with medical problems in 101 (36.6%) patients, and 175 (63.4%) patients had surgical problems. 3. Among the 276 patients, 122 (44.2%) patients were admitted, 145 (52.9%) patients were discharged from the emergency room after adequate treatment. 4. Among the transferred patients, simple laceration (33.0%) were most common, acute gastroenteritis (12.0%), and simple contusion (10.5%) were followed. These results suggest that about 10% of patients visiting level Ⅲ emergency care center, can be safely transferred to nearest level Ⅰor Ⅱ emergency centers on the bases of non-emergent patient guideline described by Emergency Medical Service law. These guideline, if put into proper use, can reduce the degree of overcrowding problems in level Ⅲ emergency care center through out the country.
조경식 金烏工科大學校 1999 論文集 Vol.20 No.-
This study was the fabrication of the structural silicon nitride ceramics with different microstructures from surface to inner layer by nitrate infiltration technique. The silicon nitride which have the fine homogeneous microstructures for the surface layer and interlocking microstructure for the inner layer could have high strength and toughness. From this study, the improving the strength and fracture toughness of silicon nitride up to 900 MPa and 7 MPa·m½ was obtained with layered microstructure by salt infiltration technique.
韓京植,蘇雄永 又石大學校 1988 論文集 Vol.10 No.-
The changes in the vascular cambium and wood elements of Alnus hirsuta (Sprecht) Ruprecht have been investigated in relation to the girth of the tree axis. The fusiform initials gain a gradual size increase to start and later remain more or less constant in their length and width. The ray initials gradually increase in height and later remain more or less constant, while the width of the ray initials keep constant. Wood elements undergo considerable changes in their dimension with the growing girth of the the tree axis and their changing trends are equal to the vascular cambium.
Metallo-β-lactamase 생성 Pseudomonas aeruginosa 및 포도당 비발효그람음성간균의 검출방법에 관한 연구
신경섭,김원식,손재철,홍승복,최재운,형성민 충북대학교 의과대학 충북대학교 의학연구소 2003 忠北醫大學術誌 Vol.13 No.2
연구목적: Metallo-β-lactamse (MBL)는 carbepenem를 포함하는 대부분의 β-lactam 항균제를 가수분해할 수 있으므로 MBL 생성균의 확산은 이들 균에 의한 감염의 치료에 큰 문제를 야기할 수 있다. 따라서 MBL 생성균에 의한 감염의 확산을 막기 위해 이들 균의 조기 검출이 필요하다. 저자들은 MBL 생성균을 검출할 수 있는 세 가지 방법을 PCR 방법과 비교하여 보았다. 재료 및 방법: Imipenem의 MIC가 8 μg/mL 이상인 50개의 포도당 비발효 그람음성 간균을 대상으로 EDTA-double disk synergy test (EDTA-DDS), Etest MBL, Hodge 변법을 시행하였으며 대조 검사로 IMP-1, VIM-1, VIM-2에 대한 PCR을 시행하였다. 결과: 총 50 균주 중 MBL 생성균은 Pseudomonas aeruginosa 1 균주, Alcaligenens xylosxidans 7 균주 등 8 균주(16%)가 검출되었다. 이들 균주는 모두 VIM-2 형이었으며, EDTA-DDS, Etest MBL은 PCR 방법과 100% 일치하였다. Hodge 변법은 8 MBL 생성균주 중 2 균주를 검출하지 못했다. 결론: 50 균주 중 8 균주가 MBL 생성균이었고 모두 VIM-2 형이었다. Etest MBL은 가격이 비싸 검사실에서는 EDTA-DDS가 적당할 것으로 사료된다. Purpose: Because metallo-β-lactamase (MBL) has activity to hydrolysls against most β-lactam drugs, dissemination of MBL producing bacteria may cause problems of treatment of infection by their microorganisms. Early detection or screening for MBLs will contribute to prevent further spread of resistance. Authors compared three MBL detection methods with PCR for MBLs. Materials and Methods: For 50 isolates of g1ucose nonfermentative gram negative bacilli with reduced susceptability against imipenem (MIC≥8 μg/mL), EDTA-double disk synergy (EDTA-DDS), Etest MBL and modified Hodge test were compared with PCR detection method for MBLs. Results: Among 50 isolates of glucose nonfermentative microorganisms, eight MBL producers including a Pseudomonas aeruginosa and 7 Alcaligenes xylosoxidans were detected. Those isolates were VIM-2 producer. The results of EDTA-DDS and Etest MBL completely agreed with PCR for MBL detection. Two isolates among eight MBL Producers were not detected in modified Hodge test. Conclusion: All of MBL producing bacteria were VIM-2 genotype. In conclusion, EDTA-DDS may be useful method for MBL detection in clinical laboratory due to high cost of Etest MBL strip.
김경식,오경섭 慶北專門大學(영주경상전문대학) 2002 慶北專門大學 論文集 Vol.21 No.-
The proposed converter connected by two capacitors in parallel with switching devices. The converter reduce the switching loss and switching noise and voltage stress at switching instants. this paper describes the operating principle of the proposed LC Load Parallel Resonant DC-DC Converter Using Soft-switching capacitors. the analysis of the proposed circuit are described of using the normalized parameters to be required in all the design steps. also, the principle of basic operating and the characteristics of driving were estimated switching frequency and the parameter. and, the data for designing got by the characteristic values example of the design's method was proposed. and, this paper conform a rightfulness of theoretical analysis by comparing a theoretical values obtained from simulation results and experimental values obtained from experiment using Power-MOSFET
소아의 급성 특발성 혈소판 감소성 자반증에서 ABO 혈액형에 따른 정주용 면역 글로불린의 치료 효과
박경배,민용식,박준수 순천향의학연구소 1998 Journal of Soonchunhyang Medical Science Vol.4 No.2
Purpose: Idiopathic or immune thrombocytopenic purpura(ITP) is a common childhood illness characterized by thrombocytopenia secondary to shortened platelet survival. Medical therapy includes corticosteroids, intravenous immune globulin (IVIG), and IV Rho(D) immunoglobulin (anti-D). Individuals with Rh-negative blood generally do not respond to treatment with anti-D, but little information is currently available regarding the potential relationship between blood type and response to IVIG. This study was designed to characterize the relationship between ABO and Rh blood type and the response to IVIG in children and adolescents with newly diagnosed ITP. Patients and Method: A retrospective chart review was performed for 31 patients with newly diagnosed ITP initially treated with IVIG by the Department of Pediatrics at Soonchunhyang University Hospital in Seoul and Chunan, Korea. Results: There were no significant differences in response rate or clinical outcome by ABO blood group in children with ITP who received IVIG monotherapy as their initial treatment. However we could not evaluate the effect of Rh type on the reponse to IVIG because our all patients were Rh positive. Conclusion: ABO blood group does not appear to be prognostic factors when IVIG monotherapy is the initial treatment for childhood ITP.
포항 석병연안에서 삼중자망에 의해 채집된 어류의 종조성 및 양적변동
한경호,손종철,황동식,최수하 한국어류학회 2002 韓國魚類學會誌 Vol.14 No.2
경상북도 포항시 석병 연안에서 삼중자망 5폭을 사용, 1998년 1월부터 12월까지 총 12회에 걸쳐 어류를 포획하여, 어류의 종조성 및 양적변동을 조사하였다. 포획된 어류는 총 1網 7目 27科 58種, 607개체, 93,427g으로 쏨뱅이 目(Scorpaeniformes)과 쏨뱅이 目(Scorpaeniformes) 어류가 총 41種으로 전체 출현종 수의 70.7%를 차지하여 우점하는 분류군이었으며, 科별로는 양볼락 科(Scorpaenidae) 어류가 8種 출현하여, 가장 많은 種이 출현하였다. 개체수에서 우점종은 망상어, 노래미, 쥐노래미, 용치놀래기, 쥐치, 볼락, 개볼락, 멸치 및 임연수어로 이들 9種이 전개체수의 62.9%를 차지하였다. 생체량에서 우점종은 망상어, 쥐노래미, 임연수어, 노래미, 볼락 및 용치놀래기로 이들 6種이 전생체량의 58.4%를 차지하였다. 출현 개체수와 생체량은 수온이 상승하는 4월과, 고수온기인 7월 및 10월에 높게 나타났으며, 저수온기인 1월에는 낮게 나타나, 수온과 밀접한 관계가 있었다. 월별 출현종수는 수온이 낮은 1월에 10種이 출현하여 가장 적었고, 수온의 상승폭이 큰 5월에 24種으로 가장 많았다. 종 다양도지수는 1.640~2.594의 범위로 경월변화가 적고, 인근 해역에 비해서 높은 지수를 나타내고 있어, 다양한 어종과 안정된 군집구조를 형성하고 있는 것으로 나타났다. 본 조사해역에서 연 중 출현한 어종은 망상어, 노래미, 쥐노래미, 볼락 등이며, 체형이 크고 성장도가 양호할 뿐만 아니라 주거종으로서 경제성있는 어종으로 평가된다. Fishes were collected by trammel net to determine seasonal species composition and biomass in coastal waters of Seokbyeong, Pohang, Gyeongsangbuk-do from January to December, 1998. A total of 607 fishes(93,427g) was sampled and classified into 58 species belonging to 27 families and 7 orders. The most dominant orders were Scorpaeniformes and Perciformes, which together accounted for 70.7% of the total. The most dominant family Scorpaenidae was represented by eight species. The dominant species were Ditrema temmincki, Hexagrammos agrammus, H. otakii, Halichoeres poecilopterus, Stephanolepis cirrhifer, Sebastes inermis, Sebastes pachycephalus, Engraulis japonicus and Pleurogrammus azonus; they accounted for 62.9% of the total fishes collected. The dominant species in biomass were Ditrema temmincki, Hexagrammos agrammus, H. otakii, Halichoeres poecilopterus, Sebastes inermis and Pleurogrammus azonus. Those species accounted for 58.4% of the total biomass. The number of individuals and the biomass were much higher in summer and autumn than in winter and spring, and closely correlated with water temperature. Monthly number of species was highest in May, with 24 species and lowest in January, with 10 species. The highest diversity index was in June(H'=2.594), and lowest in January(H'=1.640). The diversity index was 1.640~2.594, with little monthly fluctuation. The diversity index in coastal waters of Seokbyeong was higher than that in other coastal waters. It suggest that the cluster structure may be stable.
조무식,김선주,원혜윤,고정관,이경석 순천향의학연구소 1997 Journal of Soonchunhyang Medical Science Vol.3 No.2
We report a series of 220 patients with low back pain who visited through neurosurgical out-patient department(OPD) from January 1994 to June 1994. We investigated how they were treated and what was the outcome on December 1995 by telephone interview. During the study period, 176 patients (80%) visited our OPD not more than twice. Frequency of OPD visit was single in 138 patients (62.7%), twice in 38 patients (17.3%), and over twice in 44 patients (20.0%). Twenty six patients (11.8%) were admitted, and 16 patients (7.3%) underwent an operation. Sixteen patients underwent surgery in this hospital, and the other 12 patients underwent surgery in any other hospitals. The rate of revisit was relatively high in patients who had a special study (58.1%), whose impression was herniated lumbar disc (41.2%) or degenerative spondylosis (55.6%), and who received prescriptions for drug (42.1%) or underwent an operation(87.5%). The rate of special study, prescriptions and/or operations of was relatively low in this hospital, which seems to lessen the rate of revisit. More active management seems to be necessary for the patient' satisfaction.
이태리 포플러 뿌리의 둘레증가에 따른 形成層 始原細胞와 그 誘導細胞의 發生學的 變化
韓京植 又石大學校 1993 論文集 Vol.15 No.-
The size variation of cambial initials and their derivatives in relation to the increase of girth in the root axis of Populus euramericana. In typical nonstoried cambium of P. euramericana, circumferential expansion of the cambium occurred by means of pseudotransverse division and subsequent elongation of daughter initials. The size of fusiform initials, vessel member, and sieve tube member were gradually increased until a maximum is reached and then remained constantly. This resultant size of cambial initials is governed by changes in the frequency of anticlinal division and the rate and amount of elongation of daughter initials. While the height of ray was gradually increased, however the width of ray and the number of ray per unit area was kept constant throughout the secondary growth.