두가지 혈류 유발방법에 의한 새로운 심폐소생술(이중 혈류 유발 심폐소생술)장치의 개발

황성오,김현,조준휘,오범진,임종천,최경훈,윤정한,이승환,김영식,이강현,이윤선 大韓應急醫學會 1999 대한응급의학회지 Vol.10 No.2

Background: There have been many efforts to augment blood flow during cardiopulmonary resuscitation. These efforts have focused on maximizing the effect of cardiac pump or thoracic pump alone. However, considering that the heart is the biggest blood reservoir and increase of intrathoracic pressure can generate blood flow, simultaneous exploitation of both mechanisms may have synergistic effect. We hypothesized that simultaneous chest constriction in addition to sternal compression by standard CPR may have additive hemodynamic effects by preventing deformation of the chest and increase of intrathoracic pressure. Methods and results: we built a new mechanical device to perform compression and thoracic constriction simultaneously. The device consists of two main elements. Piston in the center is to depress the sternum. Strap is to constrict the thorax circumferentially. Strap is attached to both sides of the piston. When the piston is pushed down, it depresses the sternum and pulls on the thoracic strap. To determine strap width to produce optimal hemodynamic effect, we measured hemodynamic parameters with variable widths of strap in two dogs after induction of ventricular fibrillation. Result of the experiment showed that 10cm wide strap was determined to be most effective. We also determined optimal depth of compression to produce maximal hemodynamic effect with animal experiments using two dogs. Animal experiments showed that the highest aortic pressure could be generated when the stemum was depressed to 5 cm. Cardiopulmonary resusciation using a new device could generate higher systolic aortic pressure, coronary perfusion pressure and end-tidal carbon dioxide tension in comparison with standard cardiopulmonary resuscitation in a pilot animal study using two dogs. Conclusion: New cardiopulmonary resuscitation method using a mechanical device designed by us could perform sternal compression and simultaneous thoracic constriction, and generate better hemodynamic effects than standard cardiopulmonary resuscitation in pilot animal experiments.

A Study of Efficient Connection using Mobility Property in Mobile Ad-hoc Network

Youngj-jun Oh1,Kang-whan Lee 보안공학연구지원센터 2014 International Journal of Multimedia and Ubiquitous Vol.9 No.12

In this paper, we proposed the context-awareness routing algorithm DDV (Dynamic Direction Vector)-hop algorithm at Mobile Ad-hoc Networks. Existing algorithm in MANET, it has a vulnerability that the dynamic network topology and the absence of network expandability of mobility of nodes. This proposed algorithm forms cluster formation using a range of direction and threshold of velocity by base-station, and we calculate exchange cluster head node probability using direction and velocity for maintaining cluster formation. DDV algorithm forms a cluster based on the cluster head node. As a result of simulation, our scheme could maintain the proper number of cluster and cluster members regardless of topology changes. In response to maintain cluster formation, we prove a continuous connection between nodes.

혼수상태의 외상환자에서 초음파를 이용한 흉부 및 복부손상의 진단

임경수,이강현,이진웅,이부수,황성오,유수영,강성준 대한응급의학회 1995 대한응급의학회지 Vol.6 No.1

The need for rapid diagnosis and treatment of life-threatening thoracic and intra-abdominal injury result in controversy over the appropriate triage of unconscious blunt trauma patients. To aid in early decisions for these patients, a prospective analysis of 98 patients with glasgow coma scale(GCS) scores≤8 was undertaken. Although intra-thoracic and intra-abdominal injuries were frequently identified based on systolic blood ressure, the use of clinical signs alone resulted in more missed injuries than did using the emergency ultrasonography. In normotensive patients(n=34), intra-thoracic injuries was identified in one patient(2.9%), and intra-abdominal injuries were in 7 patients(20.6%). In shock(systolic blood pressure<90mmHg) Pa-tients(n=64), thoracic injuries and intra-abdominal injuries were diagnosed in 8(12.5%) and 27 patients(42.3%), thoracic and abdominal combined injuries were identified in 11 patients(17.2%). The sensitivity, specificity, and accuracy of emergency ultrasonography were 96.3%, 91.7%, 94.9%. This study suggests that all unconscious trauma patients undergo immediate emergency ultrasonography to prevent missing life-threatening injuries.

Erratum to: Intracellular Substrates of a Heme-Containing Ascorbate Oxidase in Pleurotus ostreatus

Seung-Rock Lee,Woo-Jeong Joo,Yong-Un Baek,Youn-Kyong Lee,Seong-Woon Yu,Yeon-Ran Kim,Kee-Oh Chay,Seung-Hyun Cho,Sa-Ouk Kang 한국미생물학회 2009 The journal of microbiology Vol.47 No.6

In the online version of the article the name of the second corresponding author is misspelled. The correct spelling is Sa-Ouk Kang. The online version of the original article can be found under doi: 10.1007/s12275-008-0307-8

Purge & Trap-GC를 이용한 의약품 필름코팅 정제 중 잔류용제에 관한 연구

장준식,이명자,소유섭,문춘선,이주헌,박희라,김진숙,강경모,이선옥,방성연,유미자,유문균,금오성,이병욱 식품의약품안전청 2000 식품의약품안전청 연보 Vol.4 No.-

의약품은 약물을 생체에 적풋하기 위하여 유효성분의 효과가 언제나 일정하게 확보되고 사응에 편리하도록 만들어지는 것이므로 유효썽분 이외에 약효에 영향을 주지 않는 성분이 첨가되는 경운가 많다. 이 때 사용되는 용매들은 제피의 광택 및 건쪼시간의 단축 등을 위하여 휘발점이 낮을 용매들이 주로 사용되어진다. 본 연구는 의약품 필름코팅정제 중 잔류용매 4종(chlorofonr benzen, trichloro ethylen, 1,4-dioxane)에 대한 변형된 pirge & trap-GC 장치를 이용한 동시분석방법을 개발하였으며, 각 표준품의 RSD 값은 chloroform 3.03%, benzen 3.17%, trichloroethylen 3.69% and 1,4-dioxane 3.41%였다. 또한 시중 유통중인 의약품 50종에 대하여 잔류웅매 양을 측정하였으며, 검출되는 잔류용매는 한 건도 없었다. This study nras carried out to develope the analytical method for the mixture of chlorefonn, benzen, trichloroethylen and 1,4-dioxane simultaneously and determine the remainingorgauic solvents in coating tablets by Purge & Trap-GC. The results were as follouFs ; 1. Chloroform, benzen, trio:tloroethylen and 1,4-dioxane separated by tenax #5 trap by HP-624GC column by terrlperature programming. The peaks were separated completely at retentiontime of 6.88min for chloroform, 8.21min for benzen, 10.38miu for trichloroethylen and 11.95minfor 1,4-dioxane. 2. Standard RSD were individually chloroform 3.03%, benzen 3.17%, trichloroethylen 3.69%and 1,4-diorane 3.41%. 3. 60 samples were not detrcted chloroform, benzen, trichloroethylen and 1,4-dioxane.

수부 주상골 요부의 전위골절에 대한 수술적 치료

조용만,이영기,강흥식,리건영,이천동,오상수 대한골절학회 1997 대한골절학회지 Vol.10 No.1

The authors surveyed the clinical study of 17cases of scaphoid fractures from March 1989 to September 1994 with minimal I year follow up at Department of Orthopedic Surgery, Lee-Rha general Hospital. The following conclusions were obtained through clinical survey. l. Of all l 7 cases, they were l3 males and 4 females; Among the 13 males, 10 cases were aged between 20 and 39 years. forming 56.8% of all. 2. All 17 cases were treated by open reduction. Unions were obtained at average l l.5 weeks in 7 cases treated with Herbert screw fixation and l 2 weeks in l 0 cases treated with K-wire fixation. 3. Two of ten K-wire treated cases resulted in delayed union, one of seven Herbert screw treated cases resulted in delayed union. 4. Unions were obtained at average 20 weeks in 3 cases of delayed union. We concluded that open reduction and K-wire fixation were recomanded for the compatible treatment method of displaced waist fracture of scaphoid.

Hepatic Cirrhosis Occurring in a Young Woodchuck(Marmota monax) Due to Vertical Transmission of Woodchuck Hepatitis Virus(WHV)

Kyu-shik Jeong,정원일,Jae-yong Chung,Mi-young An,Chae-yong Jung,Gyoung-jae Lee,Jong-soo Kang,Byeong-cheol Kang,Young-heun Jee,Bruce H Williams,Young-oh Kwon,Da-hee Jeong 대한수의학회 2003 Journal of Veterinary Science Vol.4 No.2

Cirrhosis Occurring in a Young Woodchuck (Marmota monax) Due to Vertical Transmission of Woodchuck Hepatitis Virus (WHV)Da-hee Jeong, Won-il Jeong, Jae-yong Chung, Mi-young An, Chae-yong Jung, Gyoung-jae Lee1, Jong-soo Kang1, Byeong-cheol Kang2, Young-heun Jee3, Bruce H Williams4, Young-oh Kwon5 and Kyu-shik Jeong*College of Veterinary Medicine, Kyungpook National University, Daegu 702-701, Korea1Shinwon Scientific Co., LTD, Research Institute, Suwon, Korea2Clinical Research Institute, Seoul National University, Seoul 110-744, Korea3College of Veterinary Medicine, Jeju National University, Jeju 690-756, Korea

보리 이삭의 소수 위치에 따른 망과 립의 특성

오양호,이강세 群山大學校基礎科學硏究所 1995 基礎科學硏究 Vol.10 No.-

쌀보리의 이삭에 관한 기초자료를 얻고자 우리나라에서 육성된 쌀보리의 품종을 공시하여 소수 위치에 따른 망의 길이와 무게, 입중등을 조사한 바 그 결과를 요약하면 다음과 같다. 1.이삭의 정단부로부터 3∼5번째 소수가 망장 및 망중의 평균치와 2∼4번째 소수가 입중의 평균치와 각각 일치하였다. 2.이삭의 기부로부터 3∼4번째 소수의 망이 가장 길고 무거웠으며 5∼6번째 소수의 입중이 가장 무거웠다. 3.측렬 소수는 중앙렬 소수에 비하여 망장은 13∼26%, 망중은 24∼41%, 입중은 18∼25% 적은 값을 보였다. Nami형 품종은 Uzu형 품종에 비하여 중앙렬과 측렬간 망장, 망중 차이가 적었다. 4.망중/망장 비로 볼때 Uzu형 품종은 Nami형 품종보다, 그리고 중앙렬은 측렬보다 망이 더 굵었다. 5.이삭을 3등분 하였을 때 망장, 망중은 하부와 중앙부간 차이가 없었으나 상부보다는 길고 무거웠다. 입중은 상부가 항상 가벼웠고 중앙부는 하부보다 무겁거나 같았다. 6.망중이 무거운 소수일수록 입중이 무거웠다. To obtain basic information for characteristics of naked barley cultivars, awn length and weight, kernel weight along spikelet positions of some cultivars bred in Korea were investigated. 1.Awn length and weight of third to fifth spikelet, and kernel weight of second of fourth spikelet from spike tip were not different from each mean value for tatal of spike. 2.From the spike base, awn of third to fourth spikelet was longest and heaviest, and kernel weight of fifth to sixth spikelet was heaviest. 3.Value for awn length, awn weight, and kernel weight of lateral row florets was lower 13 to 26%, 24 to 41%, and 18 to 25%, respectively than one for those of cental row floret. Difference for awn length and weight between central and lateral row in Nami type cultivars compared to Uzu type cultivars was small. 4.In the ratio of weight/length of awn, awn of Uzu type cultivars was thicker than that of Nami type cultivars, and awn of central row was thicker than those of lateral raws. 5.When one spike was divided into three parts, awn length and weight of low part were not different from those of central part, but were longer and heavier than those of upper part. The order of kernel weight was central≥low>upper part. 6.Kernel weight was linearly related to awn weight.

정신과 환자가족의 스트레스와 대처방법과의 상관관계 연구

이강오,김은하,백영주 朝鮮大學校 附設 醫學硏究所 1991 The Medical Journal of Chosun University Vol.16 No.2

This study was attempted to analyze the correlation between stress and coping method of the families of psychiatric patients. The subjects of this were 134 family members selected from psychiatric wards at 2 University Hospitals and 1 Psychiatric Clinic in Kwangju, and National Psychiatric Hospital in Naju Gun. Data was collected from July 18 to August 31, 1990, by the questionaire method. The instruments used the Stresds Rating Scale developed by the researcher and the Coping Scale by Jalowiec and Powers. The data were analyzed by t-test, ANOVA and Pearson's Correlation Coefficient. The results of the study were as follows; 1. Average total stress score of subject was 100.99. Stress factors were classified into seven, and their order of getting score was; information(3.28), family prob1ems(3.20), treatment and nursing care(3.15), financial problems (3.10), Patient's illness(2.97), interpersonal relationship and communication (2.97), and unfamiliarity surroundings(2.74). 2. Average total coping score of Subject was 98.84. Subject rated problem oriented coping methods (3.20), significantly higher in degree of use than affective oriented coping method(2.52). 3. The relationship between stress score and coping score was significantly positive correlation (r=. 3024, P=.000).

하부 늑골골절과 masked 복부손상과의 상관관계

이강현,임경수,홍은석,황성오 대한응급의학회 1996 대한응급의학회지 Vol.7 No.2

Some emergency physicians neglect abdominal injuries if a patient does not complaint of abdominal pain or abdominal tenderness was absent on physical examination. But intra-abdominal injuries are correlated closely with lower rib fractures and pelvic bone fractures. In cases of lower rib fractures, intra-abdominal organs are injured as a diaphragm is elevated as high as 5th intercostal space in expiration period. When intra-abdominal solid organ is ruptured, a patient complaints of abdominal pain, but there`s no abdominal pain if small hematoma occurs in solid organs. Although the most of solid organ hematoma are resolved spontaneously without complications, sometimes delayed rupture of hematoma occurs especialy in patients with the coagulopathy. So emergency physician must evaluate the abdomen closely when the possibility of intra-abdominal injury is high. To evaluate the intra-abdominal injuries, we investigated 57 patients with lower rib fractures by ultrasonography. The patients were divided in 2 groups according to presence of abdominal symptomes; patients with abdominal symptoms(n=10). Among 57 patients, intra-abdominal injuries were found in 35 patients. In group with lower rib fractures and presence of abdominal symptoms, intra-abdominal injuries were diagnosised in 32 patients(68.9%) with 48 cases(hepatic injury; 20, spleen injury; 19, renal injury 7, hemoperitoneum without solid organ injury; 2). In group with lower rib fractures and abscence of abdominal symptoms, intra-abdominal injuries were diagnosised in 3 patients(30.0%) with 3 cases(spleen injury; 1. hemoperitoneum without solid organ injury;2). In conclusion, emergency physician must do ultrasonography to evaluate intra-abdominal injuries in patients with lower rib fractures although a patient does not complaint of abdominal pain.