폐흡충에 의한 무균성 노흉에 대한 돼지꼬리형 도관(pig-tail catheter)을 이용한 치료의 효과

한경택,권세훈,김형호,하재화,선길홍,권용은,윤성호,이승일 朝鮮大學校 附設 醫學硏究所 2006 The Medical Journal of Chosun University Vol.31 No.3

Background: Pulmonary paragonimiasis is caused by consumption of raw or improperlycooked crustacea infected with the laval stage (metacercaria) of Paragonimus westermani. The most characteristic symptoms were rust-colored sputum and cough. Paragonimiasis causes pleural thickening or effusion in 48% of the patients. Pleuro-pulmonary paragonimiasis can be easily overlooked by physicians who do not suspect this disease in the differential diagnosis. Method: We compared the outcomes of 11 patients with paragonimus empyema managed either through thoracotomy or pig-tail catheter drain. These patients were confirmed by food history, clinical and radiological findings, and laboratory data. Results: The male and female ratio was 1.75 : 1, and mean age was 40.0 ± 13.5 years. AII patients had pulmonary symptoms such as cough or chest pain. Serum-ELISA for paragonimiasis were all positive (mean titer was 0.57). AII patients had pleural effusion in radiological findings( 2 patients had bilateral pleural effusion). All patients received praziquantel (75 ㎎/㎏/day for 3days). Two patients were treated with thoracotomy and nine patients were treated with pig-tail drain. Hospital stay were 14.5 days in thoracotomy group and 5.6 days in pig-tail group respectively, Conclusion: Compared to the conventional thoracotomy grouP, the patients with paragonimus empyema who received pig-tail catheters had a significantly-decreased period of drain in situ, were clinically improved earlier, and were discharged earlier.

자가치아이식술에 관한 임상적 및 방사선학적 연구

한근아,홍국선,이상화 조선대학교 구강생물학연구소 2003 口腔生物學硏究 Vol.27 No.1

Autogenous tooth transplantation, or autotransplantation, is the surgical movement of a tooth from one location in the mouth to another in the same individual. Tooth transplantation offers one of the fastest and most economically feasible means of replacing a missing tooth. Despite the increasing use of osseointegrated implants in patients with missing teeth, their use is contraindicated in growing patients. Transplantation of available teeth remains a suitable choice for replacing missing units in young patients. Once thought to be experimental, autotransplantation has achieved high success rates and is an excellent option for tooth replacement. Successful transplantation depends on specific requirements of the Patients. the donor tooth. the recipient site, assessment of patients, and surgical procedure. The aim of this paper is to underline the evidence based principles for successful autotranbplantation and report clinical and radiographic results related with various conditions in three cases.

각종 치과레이저의 Streptococcus mutans에 대한 증식 기능억제 효과

한강석,국중기,유소영,김화숙,박종휘,박현동,이상훈 大韓小兒齒科學會 2003 大韓小兒齒科學會誌 Vol.30 No.3

레이저의 구강내 산 생성 세균인 S. mutans에 대한 증식 및 기능 억제효과를 평가하기 위하여 S. mutans KCTC 3065가 포함된 세균 pellet에 Er:YAG 레이저와 Nd:YAG 레이저를 비접촉식 방법으로, 조사세기 50mJ, 조사시간 5초, 그리고 pulse repetition rate를 각각 10Hz와 30Hz로 하여 조사하고 세균 군락수, 산 생성능, 불용성 세포외다당류의 합성량을 측정하여 다음과 같은 결과를 얻었다. 1. Chinese ink로 photosensitization을 시행한 후 Nd:YAG 레이저를 조사한 경우가 S. mutans의 증식을 가장 많이 억제하였으며 Er:YAG 레이저 조사도 증식을 억제하였다. Chinese ink를 사용하지 않고 ND:YAG 레이저를 단독으로 조사한 경우는 S. mutans의 증식을 억제하지 못하였다. 2. Chinese ink로 photosensitization을 시행한 후 Nd:YAG 레이저를 조사한 경우가 일정기간 동안 S. mutans의 산생성능을 가장 많이 억제하였으며 Er:YAG 레이저 조사도 산 생성능을 억제하였다. Chinese ink를 사용하지 않고 Nd:YAG 레이저를 단독으로 조사한 경우는 S. mutans의 산 생성능을 억제하지 못하였다. Er:YAG 레이저와 Chinese ink로 photosensitization을 시행한 후 Nd:YAG 레이저를 조사한 경우는 pulse repetition rate가 클수록 전반적으로 세균의 산생성능을 더 많이 억제하였다. 3. 레이저 조사는 S. mutans의 불용성 세포외다당류의 합성에 영향을 미치지 못하였다. 이상의 결과로 보아 Er:YAG 레이저와 Chinese ink로 photosensitization을 시행한 후의 Nd:YAG 레이저 조사는 일정시간 동안 S. mutans의 증식과 산 생성능을 억제시키므로써 치아우식증 예방효과를 얻을 수 있다고 사료되나 억제효과가 오래가지 않아 임상적으로 효과를 얻기 위해서는 자주 조사를 해주어야 한다는 문제점을 안고 있어 임상적으로 치아우식증 예방이란 단독 목적으로 사용하기에는 실용성이 크지 않다고 사료된다. This was performed to evaluate the inhibitory effect of laser on the growth of S. mutans. The bacterial pallets containing S. mutans KCTC 3065 were irradiated with Er:YAG laser and Nd:YAG laser by non-contact method at an intensity of 50mJ for 5 sec with the pulse repetition rates of 10Hz and 30Hz, respectively. The following results were obtained on colony count, acid producing ability, and the amount of insoluble extracellular polysaccharide synthesis. 1. The irradiation of Nd:YAG laser after photosensitization with Chinese ink inhibited the proliferation of S. mutans the most, and the irradiation of Er:YAG also inhibited the proliferation. However, the irradiation of Nd:YAG laser alone could not inhibited the proliferation of S. mutans. The pulse repetition rate did not affect significantly on the proliferation of bacteria in overall. 2. The irradiation of Nd:YAG laser after the photosensitization with Chinese ink inhibited the acid production of S. mutans the most for a certain period of time. Er:YAG laser also inhibited acid production. When Nd:YAG laser was used alone, the acid production of S. mutans was not been inhibited. The irradiation of Nd:YAG laser after photosensitization with Chinese ink inhibited the acid production ability of bacteria the most as the pulse repetition rate increased. 3. Laser irradiation did not inhibited the synthesis of insoluble extracellular polysaccharide of S. mutans. From these results, we conclude that the irradiatioin of Er:YAG laser and Nd:YAG laser after photosensitization with Chinese ink would inhibit the proliferation and acid production by S. mutans, which may prenent dental caries. However, this effect does not last long time so that the laser irradiation should be repeated frequently in order to obtain clinical effect; thus, this laser irradiation would not have a clinical usefulness in preventing dental caries when used solely.

일측 태아사망을 동반한 쌍태임신 1례

이태화,김성한 고신대학교 의과대학 2009 고신대학교 의과대학 학술지 Vol.24 No.2

The antepartum death of one fetus in twin pregnancy is a rare obstetric complication. One fetal demise of twin pregnancy in the second or third trimester is an unusual and difficult problem in the management of pregnancy. It can be associated with an increased risk for mortality and morbidity in the remaining fetus and with maternal DIC(Disseminated intravascular coagulation). If one fetus in twin pregnancy died in uterus remote from term and another fetus did not, the dead fetus will be compressed between the uterine wall and the membrane of living fetus, becomes a fetus compress or fetus papyraceous. Concern for the surviving fetus after death of its co-twin is balanced between the risk of preterm birth and those involving exposure to events in uterus that may threaten its well-being. Recently we experienced a case of twin pregnancy complicated by the death of one fetus. We represent a case in diamnionic monochorionic twin pregnancy with a brief review of literatures.

동아의료원에서 실시한 양수천자 90례의 세포유전학적 분석

한진영,이경미,신상동,차문석,제구화 동아대학교의과대학 1997 동아의대학술지 Vol.9 No.2

향상된 메모리 기반 학습 알고리즘

한진철,김상귀,윤충화 명지대학교 산업기술연구소 2006 産業技術硏究所論文集 Vol.25 No.-

K-NN (k-Nearest Neighbors), which is a well-known memory-based learning algorithm, simply stores entire training patterns in memory, and uses a distance function to classify a test pattern. K-NN is proven to show satisfactory performance, but it is notorious for memory usage and lengthy computation. Various studies have been found in the literature in order to minimize memory usage and computation time, and NGE (Nested Generalized Exemplar) theory is one of them. In this paper, we propose RPA (Recursive Partition Averaging) and IRPA (Incremental RPA) which is an incremental version of RPA. RPA partitions the entire pattern space recursively, and generates representatives from each partition. Also, due to the fact that RPA is prone to produce excessive number of partitions as the number of features in a pattern increases, we present IRPA which reduces the number of representative patterns by processing the training set in an incremental manner. Our proposed methods have been successfully shown to exhibit comparable performance to k-NN with a lot less number of patterns and better result than EACH system which implements the NGE theory.

직업적 연폭로에서 혈중 연량 수준에 따른 선별검사로서의 혈중 ZPP 검사의 타당도

한구석,안현철,김용배,리갑수,김화성,황규윤,장봉기,이성수,안규동,이병국 순천향대학교 산업의학연구소 1999 순천향산업의학 Vol.5 No.1

In order to evaluate the validity of current screening criteria of lead exposure and to provide effective information for the better health management of lead workers, author investigated the interrelationship between blood lead and blood zinc protoporphyrin(ZPP) and evaluate the validity of blood zinc protoporphyrin as the screening test and blood lead as gold standard of diagnostic test. The total of 2245 lead workers (male workers: 1982, female workers : 263) from 12 lead using industries were studied. Blood lead, ZPP, hemoglobin and hematocrit were selected as lead exposure variables. Personal information on sex, age and work duration were also checked. Blood lead was measured with flameless atomic absorption spectrometry (model: Hitachi 8100) using standard addition method. Blood ZPP was measured with portable hematoflurometer (model: Aviv 206). The results obtained were as follows: 1. The mean blood lead of all lead workers were 0.7±14.3㎍/㎗(Male: 31.0±14.4㎍/㎗, Female: 28.2±12.9㎍/㎗), whereas the mean blood ZPP of those were 68.1±47.5㎍/㎗(Male: 63.9±43.7㎍/㎗, Female: 100.1±61.0㎍/㎗). The mean value of hemoglobin and hematocrit of all lead workers were 14.5±1.5g/㎗(Male: 14.7±1.3g/㎗, Female: 12.3±1.2g/㎗) and 45.4±3.6(Male: 46.2±2.8, Female: 39.5±3.1) respectively. 2. Validity of test using blood zinc protoporphyrin as screening test for blood lead levels of 30㎍/㎗ as gold standard of diagnostic test revealed that the highest validity value for male and female lead workers were 50 and 90 ㎍/㎗ of ZPP respectively, showing 50 and 60 ㎍/㎗ of ZPP for all lead workers. While those test for blood lead levels of 40㎍/㎗ as gold standard of diagnostic test revealed that the highest validity value for male and female lead workers were 60 and 90 ㎍/㎗ of ZPP respectively, showing 60 ㎍/㎗ of ZPP for all lead workers, those test for blood lead levels of 50 and 60㎍/㎗ as gold standard of diagnostic test revealed that the highest validity value for male and female lead workers were 60 or 70 and 100 ㎍/㎗ ZPP respectively, showing 60and 70 or 80 ㎍/㎗ of ZPP for all lead workers. 3. Predictive value of test using blood zinc protoporphyrin as the screening test for different blood lead levels of 30, 40, 50 and 60㎍/㎗ as gold standard of diagnostic test revealed that positive predictive value of screening test were decreased by the increase of blood lead level regardless of csreening criteria value ZPP and negative predictive value of screening test were increased accordingly regardless of screening criteria value of ZPP. On the other hand, within same blood lead level as a gold standard positive predictive values were inceased by the increase of screening criteria value of ZPP, whereas the negative predictive value were decreased accordingly by the the increase of screening criteria value of ZPP. 4. The correlation analysis of all lead workers among study variables revealed that CPbB and natural log transformation ZPP(LZPP) were better correlated with other variables and found to be better estimate than PbB and ZPP themselves. The age was correlated with all other variables, but the work duration was not. The correlation analysis of male and female workers among study variables revealed the same results with all lead workers. 5. The slope of simple linear regression of CPbB (independent variable) with ZPP in female workers(3.223)was steeper than in male workers(2.144). That of lead workers with work duration of less than 1 year was steeper than that of lead workers whose work duration was more than 1 year. But there was no slope difference between two groups divided by their work duration of 2 years less and more. The slope of simple linear regression of CPbB lead (independent variable)with ZPP in lead workers whose blood lead were higher than 30㎍/㎗and 40㎍/㎗ were steeper than those whose blood lead were less than 30㎍/㎗ and 40㎍/㎗. 6. The slope of simple linear regression of CPbB (independent variable) with ZPP in lead industries with low mean blood lead were less steeper than those with high mean blood lead. 7. The slope of simple linear regression of CPbB (independent variable) with LZPP in female workers(0.0308was steeper than in male workers(0.0253). That of lead workers with work duration of less than 1 year was steeper than that of lead workers whose work duration was more than 1 year. But where was no slope difference between two groups divided by their work duration of 2 years less and more. While the slope of simple linear regression of CPbB lead (independent variable) with LZPP in lead workers whose blood lead were hogher than 30㎍/㎗ was not steeper than those whose blood lead were less than 30㎍/㎗, there was no slope difference between two groups whose blood lead were less than 40㎍/㎗ and more than 40㎍/㎗. 8. The slope of simple linear regression of CPbB (independent variable) with LZPP in lead industries with low mean blood lead were less steeper than those with high mean blood lead, but the difference was not significant then that of CPbB and ZPP. With above results, it is recommended that the screening criteria value of ZPP should be down to 60-70㎍/㎗ from 100㎍/㎗ for male lead workers and screening criteria of ZPP for female lead workers was all right with current value of 100㎍/㎗. So it is recommended to make different screening criteria of ZPP for male and female workers like the hemoglobin and hematocrit screening criteria. It is also preferable to use CPbB and LZPP rather than uncorrected PbB and ZPP in the evaluation of lead exposure for lead workers.

무용전공 대학생의 스트레스 요인 분석

한태준,우태화,오상훈 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.1

Stressors which dance specialty university student have been suffered from during activity in dance were analyzed through open-questionnaire, the participants in this survey were 228 dance specialty university student, sort questions according to the affinity and similarity of them in the aspects of conception, questionnaire was summed up in six factors and twenty questions. Arranged twenty questions were determined by the fifth levels of Likert's type scale to be good for responses. As the result of analysis of responded contents, they were sorted as main six factors like that university professor, training, school, finance, individual, rest. As Jim Taylor told, dancers are apt to have disease and injuries when dancers are under the stress, and those who have abnormal increase of decrease in one's own weights can have more stress. The way of conducted a good performance by dance specialty university student is that dancers should have responsibility as worker and have pride as artist, many study and analysis will be necessary if there are any other in actual circumstances or not in actual circumstances.

甘草의 有效性分 含量에 關한 硏究

韓宗鉉,白承和,康成溶,宋昊埈 한국전통의학연구소 1997 한국전통의학지 Vol.7 No.2

시중에 유통되고 있는 4종류의 감초(특감초,원감초,일호감초,이호감초)에 대하여 유효약리성분 glycyrrhizin, 18α-glycyrrhetinic acid 및 glycyrrhizic ammonium salt의 함량을 대한약전의 규격기준에 준하여 검토한 결과는 다음과 같았다. 1. 감초의 수분함량은 7.00-10.16%범위 였다. 2. 감초의 회분 및 산불용성 회분 함량은 3.03-4.09%, 0.02-0.11 % 범위 였다. 3. 감초 품질의 지표성분인 glycyrrhizin,18α-glycyrrhetinic acid 및 glycyrrhizic ammonium sait 을 TLC로 각각 Rt값 0.399,0.932,0.394 위치에서 암자색의 반점을 확인할 수 있었는데 특 감초,원 감초,1호 감초,2호 감초 모두 같은 위치에서 뚜렷한 암자색 반점을 확인할 수 있었고,확인되지 않은 3종 화합 물의 Rt 값은 0.28,0.66,0.78 였다. 4. 감초품질의 지표성분인 glycyrrhizin,18 α-glycyrrhetinic acid 및 glycyrrhizic ammonium salt을 HPLC로 정량한 결과 glycyrrhizin은 4종류 감초에서 분석되어 2.93-4.48g% 범위였고, 18 α-glycyrrhetinic acid는 특감초 및 일호감초에서만 13.64,3.52 g% 함유되었다. 그러나 glycyrrhizic ammonium salt 분석되지 않았다. 5. 문헌상에 기록된 감초의 종류는 16종이었고 이들에서 분리된 화학물질은 약 170여 가지였다. This study was carried out to investigate the content of glycyrrhizin, 18 α-glycyrrhetinic acid, glycyrrhizic ammonium salt, moisture, ash, residue ash in four kinds(teuk-gamcho, won-gamcho, IIho-gamcho, Eho-gamcho) in Glycyrrhizae Radix(Glycyrrhiza sp.) used in Korea. The result were as follows ; The moisture content in four kinds of gamcho was ranged from 7.00-10.16%. The ash and ash of acid residue in all gamcho types ranged from 3.03-4.09% and from 0.02-0.11 %, respectivly. The glycyrrhizin, 18 α-glycyrrhetinic acid, glycyrrhizic ammonium salt in Teuk-gamcho, Won-gamcho, IIhogamcho, Eho-gamcho verified from line of dark purplue color by TLC and Rf value of glycyrrhizin, 18 α-glycyrrhetinic acid, glycyrrhizic ammonium salt were 0.399, 0.932, O. 394, respectivly, and the Rf value unknown compoud were 0.28, 0.66, 0.78. The glycyrrhizin, 18 α-glycyrrhetinic acid, glycyrrhizic ammonium salt content of all gamcho by HPLC were ranged from 2.93-4.48g%, 3.52-13.64g%, and trace, respectively. The 16 kinds of Glycyrrhiza (Licorice) were dassified, and that the identification about 170 chemicals were phamacology action substrate by reported references.

인삼 및 인삼밭 토양의 무기성분 정량에 관한 연구

趙漢玉,李重和,趙成桓 세종대학교 1978 세종대학 논문집 Vol.7 No.-

The author investigated the physical and chemical properties of the soil which ginsengs were cultivated and minerals in Korean ginseng were analyzed. The results were summarized as follows: 1. The soil which ginsengs were cultivated was that of Lithosel or reddish yellow Podzolic. 2. Ginseng tail showed the higher values in the contents of all the minerals than white ginseng. Other minerals except Na, Cu, and P seemed to be more abundant in the ground part than in ginseng root and in ginseng leaves, especially, such elements as Fe, Cu, Zn, and Mn were distributed in great quantities. 3. The content of Ca in ginseng root increased gradually according to growth stage and that of K, Na and Mg decreased on the contrary. 4. In the course of manufacturing of red ginseng, some minerals and proximate components were washed away. 5. Ginseng tails were extracted with ethyl alcohol and concentrated. The extraction yields of chemical components in ginseng extract were as follows: fat: 52.4% free sugar: 87.4% the other proximate component: 15-30% K: 68.1% Na: 54.6% P_2O_5:48.2% Mg: 41.2%