非行靑少年의 家出에 關한 社會精神醫學的 硏究

奇栢錫,閔秉根 大韓神經精神醫學會 1981 신경정신의학 Vol.20 No.2

The present study was intended to examine the delinquent adolescents' runaway and to clarify the relationship between the runaway and delinquency. Data were collected through questionnaire survey. Subjects served for the study consisted of 757 delinquent adolescents in 4 juvenile corrective institutions sampled from 11 of those in Korea, using random sampling method. Their age range lay between 12 and 21. Results of the study were presented below. 1. Among the sampled delinquent adolescents of 570 (male 520, female 50), respondents 369 adolescents (male 329, female 40) have had runaway experiences. They showed some variation in the frequency of runaway. The adolescents experiencing runaway for only once were 129 (male 114, female 15), two to three times 132 (male 117, female 15), and four and more times, 118 (male 98, female 10). 2. Runaway drive was experienced by 58.3% of the respondents (“occasionally” 41.2%,“frequently”17.1%). Runaway behavior was experienced by 64.7% of the respondents (once 22.6%, two to three times 23.2%, foure and more times 18.9%). 3. The runaway drive was experienced by 56.9% of the males and 72.5% of the females. The runaway behavior was experienced by 63.3% of the males and 80.0% of the females. The females showed 1.3 times higher proportion in both runaway drive and runaway behavior compared with the males. The 18-21 age group showed the highest incidence of runaways. 4. Their self self-reported reasons for runaway were “family problems”(21.5%), “bad influences of peer group”(18.7%), “going to Seoul without definite object” (15.2%), “occupational problems”(12.0%) and “failure in school performance”(11.6%). The reason for runaway of the males were “bad influences of peer group”(19.8%), “family problem”(19.5%) and “going to Seoul without definite object”(15.5%), and those of the females were “family problems”(37.5%) “heterosexual relationship” (12.5%), “going to Seoul without definite object” (12.5%) and “bad influences of peer groups”(10.0%). These implied that family problems and friend relationship were most importantly associated with delinquent adolescents runaway. 5. Family problems perceived by delinquent adolescents influenced the runaway behavior. This implied that the problems of family climate due to“parental disease”, “parent disharmony”and “alienation and distrust from parent”was related to the runaway behavior of delinquent adolescents.

토끼의 만성 뇌혈관연축 모델에서 혈관확장제에 의한 비가역적 혈관수축의 발현시기와 혈관벽의 전자현미경소견상 이상소견이 발현되는 시기와의 시간관계

정천기,조병규,김하영,지제근,김종재,한대희 대한신경외과학회 1995 Journal of Korean neurosurgical society Vol.24 No.11

One of the characteristics of the cerebral vasospasm is its irreversibility with the vasodilators.Under the hypothesis that the irreversibility with vasodilators might be caused by the structural change in the arterial wall, authors examined the chronological relationships between the irreversibility and the electron microscopic findings of the arterial wall in the rabbit chronic vasospasm model. The development of the vasospasm and the irreversibility of the vasospasm with the intra-arterial papaverine were defined angiographically. After the second angiography done in one to 30 days after subarachnoid hemorrhage(SAH), eighteen rabbits were sacrificed, and the basilar artery was examined with electron microscope. Arterial narrowing was the severest one day after SAH(54.1% of the pre-SAH diameter), and was maintained up to 30 days afer SAH. The irreversibility of the arterial constriction with the papaverine developed 5 days after SAH, which had a tendency to recover 6 to 9 days after SAH. However the irreversibility was noted again 16 days after SAH. Electron microscopy revealed the endothelial wrinkling, disorganization of muscle fiber, myonecrosis, thickening of smooth muscle fibers, and increase of connective tissue in the tunica media. These structural changes were severest one day after SAH, and gradually diminished up to 30 days after SAH. These data show that there are no chronological relationships between the irreversibility and the structural change per se. However the fact that the irreversibility developed during the reparative phase of the arterial wall injury by SAH suggests that the chronic vasospasm is not a primary event but a secondary phenomenon following an injury to the cerebral arterial wall.

사람 胎盤組織의 Alkaline Deoxyribonuclease

白汶基,黃炳斗 충남대학교 의과대학 지역사회의학연구소 1976 충남의대잡지 Vol.3 No.2

Serial estimation of acid and alkaline deoxyribonucleases of human placenta has been performed, and some properties of alkaline deoxyribonuclease having an optimal pH around 9 has been investigated. A gradual decrease in the acid deoxyribonuclease activity occurs with advancing gestation after 20 weeks, the activity at term being about one fourth of that of before 20 weeks. The alkaline deoxyribonuclease activity in maintained until approximately the 16th week of gestation at which the functioning villi has been established and thereafter decreases rapidly with no apparent activity about 28 weeks. The alkaline deoxyribonuclease is heat-stable with 30% activity even at 90℃ for minutes. The alkaline deoxyribonuclease is inhibited by Ca^2+, Mn^2+ and ethylenediaminetetraacetate and is activated by Co^2+, Mg^2+, ATP and cyanocobalamin, the optimal concentration of Co^2+ necessary for maximal activity being 3 mM. The alkaline deoxyribonuclease acts both on the native DNA and heat-denatured DNA with preference for the latter. Kinetic analysis shows that the maximal velocity is independent of Co^2+ while Km decrease from 4.16 × 10^-4 M DNA-P in the absence of Co^2+ to 9.4 × 10^-5 DNA-P in the presence of Co^2+. From the activity changes with gestational age, it is suggested that the alkaline deoxyribonuclease plays an important role in the differentiation of the function villi.

몇가지 소독약의 향균작용에 대한 실험적 검토

정병기,조윤희 中央醫學社 1971 中央醫學 Vol.20 No.3

Since the antimicrobial activities of disinfectants are known to be modified by the various factors, it was thought worthwhile to investigate the activities of some commercially available disinfectants under the varied conditions. Thus, the activities of disinfectants A,B,C,D, and E, all of which may be purchased at the drug-stores, to the stock and freschly isolated strains of Staph. aureus, Es. coli and Ps. aeruginosa were investigated at the environmental temperatures of 5°C, 20°C, and 30°C. The results of observation might be summarized as follows: 1) The antibacterial effects of disinfectants A were more powerful in lower temperature than in higher temperature tested. After 15 minutes of exposure at 5°C. to the 1 : 250 dilution, it appeared to have caused the loss of viability of all the strains. 2) The antibacterial effects of disinfectant B increased with the elevation of temperature. After 10 minutes of exposure at 30°C. to the 1 - 625 dilution, it appeared to have caused the loss of viability of all the strains. 3) Under the experimental conditions employed, disinfectant C did not show any antibacterial activity. 4) The antibacterial activity of disinfectant D was found stronger at 20°C, or 30°C, than at 5°C. After 10 minutes of exposure at 20°C. to the 1 : 120 dilution of the disinfectant, all the strains appeared to have lost the viability. 5) The antibacterial effects of disinfectant E (Phenol) increased with the elevation of

가시 광선과 아르곤 레이저에 의해 중합된 글라스 아이오노머와 레진 수복물 주변 법랑질의 항우식 효과에 관한 비교 연구

유병규,김종수,김용기 大韓小兒齒科學會 1998 大韓小兒齒科學會誌 Vol.25 No.1

The main purpose of this study was to compare the anticariogenecity of glass ionomer restorative material polymerized by argon laser versus visible light. The results from the present study can be summarized as follows; 1. Under the polafized light microscope, the specimens of laser-cured group showed the shallower lesion body than that of visible-light oured group, both in the stage of lesion initiation and progression. 2. Glass ionomer material cured by visible light showed shallower body of lesion than that of composite resin cured by argon laser at the stage of lesion progression(p<0.05). It was suggested fluoride released from the glass ionomer might have the additive anticariogenic effect. 3. Statistical difference between groups on depth of lesion body was evident after lesion progression (p<0.05). It was suggested that anticariogenic effect by argon laser was more effective at the stage of lesion progression than the lesion initiation. 4. The increment of lesion body during progression was highest in group Ⅳ (p<0.05). 5. Based upon the above-mentioned results of this study, it can be concluded that the advantage of anticariogenic effect and short curing time of argon laser in glass ionomer polymerization should be considered in children and adolescents whose caries activity is relatively higher.

노후공동주택의 주거환경 및 공간 분석에 관한 조사 연구

姜炳己 울산과학대학 1995 연구논문집 Vol.21 No.-

1960년대 초 주택부족을 해결하기 위한 정책의 일환으로 건립되기 시작한 공동주택은 `70년대 이후 대단위 아파트단지들이 건설되면서 도시의 보편적인 주거형태로 정착되고 있다. 그러나 1960-1970년대에 지어진 공동주택들은 `80년대에 들어오면서 노후되기 시작하여 관리 및 보수 등에 많은 문제를 일으키고 있다. 공동주택의 노후화는 건물의 내구성 안전성 기능성등의 성능 저하를 초래하여 거주자들의 주거생활 및 나아가 도시체계상에 부정적인 측면을 발생시키게 된다. 이러한 노후공동주택에 대한 해결방안으로 현재 재건축 사업이 활발하게 시행되고 있으나 주거환경개선과 토지이용률 제고라는 본래의 취지와는 달리 투기적 목적이 우선하여 부정적인 사회문제를 일으키고 있는 실정이다. 따라서 본 연구는 건립된지 18년이 지난 대구광역시 동구 효목동 소재의 효목 주공아파트에 대한 주거환경 및 공간분석을 실시하여 노후도를 객관적으로 판별하고 다각적인 측면에서 개선방안을 마련하는데 그 목적을 두고 있다. The main research tasks of the present study was to analyse the dwelling environment and space in deteriorating appartments. The main purposes of the present study through this analyses as follow : 1.to establish the methodlogy of discrimination of deterioratig appartments. 2.to provide the pratical evidences that is useful to slove the selective problems of utilizing deteriorating appartments.

Y-Ba-Cu-O계 초전도 박막 제작 및 특성 연구

채기병,소대화,강기성 明知大學校 産業技術硏究所 1994 産業技術硏究所論文集 Vol.13 No.-

The superconducting thin films have ben deposited on the SiOx substrate by R.F magnetron sputtering using YBa₂Cu₃Ox single target. The thickness of films was 1000-2000Å with a rate of 20-25Å/min and superconducting properties were studied of thin films depend on the compositions. We have studied the superconducting thin films obtained under the various conditions in this sputtering method of fabrication and aiso analyzed SEM photograph and X-ray diffraction patterns of calcination powder to target and the thin films have an influence in addition. We could measure the annealing condition and the electric properties of superconducting thin films owing to substrate about 50K.

殘留應力을 考慮한 鎔接材의 疲勞龜裂 進展擧動에 關한 硏究

최병기,이을호,국중민,기준호,임선빈,정장만 朝鮮大學校 機械技術硏究所 2000 機械技術硏究 Vol.3 No.1

The effect of welding residual stress on the initiation and propagation of fatigue crack is investigated so as to study the fatigue behavior in welding residual stress field. Especially, the relation between welding residual stress and fatigue crack opening behavior is investigated and the redistribution of residual stress as a fatigue crack propagates is examined. Following results are obtained. 1) In case of the load range is constant, as the stress ratio is changing to 0.1, 0.33, 0.5 the propagation life is constant but the growth life decreases. And than, when maximum load or minimum load is constant, as the stress ratio increases the growth life and propagation life increase. 2) The fatigue crack propagations rate da/dN appears to accelerate when the stress intensity factor range ΔK is less than 15MPa-m^1/2. 3) The residual stress that is appeared by welding decreases after cutting. 4) Fatigue crack propagation ratio is affected by tensional and compressible residual stress at the initial time, but it's similar to the original in the more than 20mm of crack length.

在學生 實態調査

安秉基,申大鉉 충남대학교 학생생활연구소 1972 學生生活硏究 Vol.1 No.-

Hypophosphatasia 환아의 치료 증례

최병제,최형준,이제호,김기덕,박수정 大韓小兒齒科學會 1998 大韓小兒齒科學會誌 Vol.25 No.3

1. Hypophosphatasia 는 골조직 및 치아조직의 비정상적인 석회화를 나타내는 대사장애로, 특징적구강내 소견 인 우치의 조기탈락 양상으로 치과에서 조기진단이 가능하다. 2. 본 증례에서 상악궁 확장을 동반한 의치 제작으로 심미적, 기능적으로 양호한 결과를 얻었으며, 영구치열기 까지 장기적 관찰 및 치료가 필요할 것으로 사료된다. hypophosphatasia is a rare metabolic disorder which manifests characteristics such as abnormal mineralization of bone and dental tissues, diminished serum and tissue alkline phosphatase, and increased urinary secretion of PEA. It ingerited as an autosomal recessive or dominant trait and occurs in all races. In general, hypophosphatasia can be classified in 4 subtypes which are the perinatal, infantile, childhood, adult type depending upon the age at presentation and severity. In young children with Hypophosphatasia the long bones show irregular defects, and the skull showes poor calcification. In older children with premature closure of the skull sutures there may ve multiple lucent area called gyral or convolutional markings, described as resimbling beaten copper, presumably resulting from increased intracranial pressure,Examination of the jaws reveals a generalized lucency of the maxilla and mandible, the cortical bone and lamina dura are thin, and the alveolar bone may be deficient. Clinical features of Hypophosphatasia imclude premature loss of deciduous teeth, especially incisors, hypoplasia of aplasia of root cementum, enamel hypoplasia, irregular calcification of dentin, large pulp chamber, and resorption of marginal alveolar bone and roots. Our report involves a patient with a chief complaint of early loss of both Mx. and Mn. deciduous ncisors. after conducting a through clinical and radiographic examination this patient was referred to pediatrics under the suspicion of hypophosphatasia, the diagnosis proved to be correct and successful results were accomplished through a denture made to improve esthetics and function.