인터넷 중독이 중학생의 건강수준에 미치는 영향

김형태,양점홍 釜山大學校 附設 體育科學硏究所 2005 體育科學硏究所 論文集 Vol.21 No.1

A total of 812 middle school students, including 273 first-year students(male:156, female:117), 260 second-year students(male:138, female:122), and 279 third-year students(male:139, female:140) from U Middle School in Busan Metropolitan City, were placed into an Internet addiction group and a non-Internet addiction group based on the Young's Internet Addiction Questionnaire. A random sample of 30 students was taken in each group from each grade level and gender. In total, 360 students are the objects of this study.......

임신 종결 후 발생한 자궁 동정맥 누공에서 자궁동맥색전술로 치료한 1예

김종민,이해혁,김태희,남계현,심일구,이권해,김형문,이임순,장종호 순천향의학연구소 2004 Journal of Soonchunhyang Medical Science Vol.10 No.2

Arteriovenous fistula of uterus is rarely reported disease. This vascular malformation is very dangerous condition because Dilatation & curettage can cause massive uterine bleeding without accurate diagnosis. The diagnosis is made by angiography, gray scale ultrasonography, color and duplex doppler ultrasonography, computed tomography, and magnetic resonance imaging is helpful. Especially color and duplex doppler ultrasonography is allows convincing detection and diagnosis of arteriovenous fistula. Recently transcatheter uterine artery embolization is treatment of choice. We have experienced a case of arteriovenous fistula of uterus. Which is presented with a brief review of literature.

정신분열병 환자의 말초 임파구에서 D5도파민 수용체 mRNA의 변화

김형섭,곽용태 용인정신의학연구소 1998 용인정신의학보 Vol.5 No.2

사질토지반의 테이퍼-펄스말뚝 적용에 관한 실험적 연구

김종인,신영기,김태형,오재학 대구대학교 산업기술연구소 2009 産業技術硏究 Vol.20 No.1

In this paper, a typical drilled shaft to cylindrical and step-tapered pile, pulse pile are produced by the experiment and then captured the ground, forming Jumunjin standard sand model tests loading at sat joy bearing capacity analysis, tapered plus pulse pile was suggestions. Soft ground and the ground around the sandy soil casting of pile to skin friction research tapered pile adjusting the angle and shape for a wide range of variation of pulse pile further study is underway, and the most graft-type model is not presented. Therefore, in this study, the test bearing capacity of existing drilled shaft current analysis by the comparative analysis, as well as skin friction through mutual tapered plus pulse pile bering capacity and allow the unit to analyze and compare the suggestions model would be effective.

Dickinson의 Death Poems

金亨泰 韓社大學 1980 대학논문집 Vol.10 No.-

Emily Dickinson contemplates or 'observes' death and immortality in so many ways. But in general her death-immortality poems can be grouped into two. One is the type that the observer herself plays the role of a dying person, the other is the one that she watches process of other people's death. Dickinson is so faithful to her own soul that she even tries to examine death as if she herself were dying. It seems to her that Death approaches like a lover with some evil contrivance or like an emperor with a majestic air, or stings like a bee, visits like a friend, kills mercilessly like an assassin, makes a surprise attack like a snake, or so forth. The effects death has on a human body are stony coldness, dead silence, and fearful numbness. Death in Dickinson's poems, however, means soul's entrance to a timeless dimension which she leaves in mystery. The port's agony lingers between Death's two contrastive effects-the body's sufferings and decay, and the soul's rest and immortality. And one of the strongest point of Dickinson as a poet is that she most fruitfully uses very simple and familiar images in our everyday life even when she deals with the very heavy subject death.

폐쇄형 원심펌프의 임펠러유동해석

김태한,권형정 동의공업대학 2001 論文集 Vol.27 No.1

Compute simulations for closed type centrifugal pump is carried out using the commercial code CFX Tascflow. Computed results, which are pressure, velocity between impeller and other impeller, required power and performance etc, was compared with actual experimental data. We found that there are hard loads due to velocity and pressure at in/outlet impeller, and pump head is within 10% error limit when volute head loss is considered to 20% loss of total head. Accordingly it is possible to get optimal impeller shape through the iteration improvement works. But, as this study was done for only impeller in order to confirm the validity of Tascflow program, computation including the volute is required for actual comparison. For this, volute data treatment process for grid generation remains with future projects.

연 폭로가 남성호르몬에 미치는 영향

김형수,장성훈,이원진,최재욱,박종태,백남원,김록호 大韓産業醫學會 2001 대한직업환경의학회지 Vol.13 No.1

목 적 : 본 연구는 직업성 연 폭로근로자에서 연폭로가 남성 생식기계 독성중 성호르몬에 미치는 영향과 그 정도를 평가하고자 시도되었다.방 법 1998년 하반기에 실시한 일반, 특수건강진단자중 경기도 지역 직업성 연 폭로 근로자 33명과 과거 직업력에서 연 폭로가 없었던 사무직 근로자 33명을 연구대상으로 선정하였다. 연의 생물학적지표로는 혈색소, ZPP, 혈중 연, 및 요중 연을 이용하였으며, 성호르몬으로는 LH, FSH, testos-terone, SHBG 및 FTI를 이용하였다. 연 폭로 지표와 성호르몬과의 상관관계를 조사하였다. 결 과 : 연의 생물학적 지표중 혈색소는 폭로군에서 대조군보다 유의하게 낮았으며, ZPP, 혈중 연및 요중 연등은 폭로군에서 대조군보다 유의하게 높았다. 성호르몬에서 FSH, testosterone, SHBG및 FTI는 모두 폭로군에서 대조군보다 낮았으나 통계적 유의성은 없었다. 폭로군의 성호르몬중에서 연령은 FSH 및 FTI, ZPP는 FSH, 혈중 연은testosterone과 유의한 상관관계가 있었다. 대조군에서 연령은 FSH, testosterone, SHBG 및 FTI와 흡연량은 FSH와 유의한 상관관계가 있었다. 연령군별 폭로군과 대조군의 성호르몬 비교에서 30-39세군의 FTI에서 폭로군이 대조군보다 유의하게 낮았으며 그 밖의 호르몬에서는 모두 유의한 차이가 없었다. 결 론 : 연 폭로군의 FSH, Testosterone, SHBG 및 FTI가 대조군에 비교하여 낮았으나 통계적 유의성은 없었다. 그러나 폭로군에서 연의 생물학적 지표와 일부 성호르몬간에 유의한 상관관계를보였으며 이는 본 연구 대상 근로자의 연 폭로 수준이 일부 성호르몬에 영향이 있음을 보여주는 것으로 판단된다. 향후 이에 대한 지속적인 연구가 진행되어 야 할 것이다. Objectives : This study was performed to evaluate the relationship between biological markers of lead exposure and level of sex. hormones in men occupationally exposed to lead. Methods : In this study, 33 male workers who employed at smelting and battery factories were compared with 33 male workers who were not exposed to lead. As biological markers of lead exposure, hemoglobin, ZPP, blood lead and urine lead were measured. As sex hormones, FSH, LH, testosterone, SHBG and FTI were determined. Results : Hemoglobin level was significantly lower in exposed than in nonexposed group. Level of ZPP, blood lead, and urine lead were significantly higher in exposed than in nonexposed group. There was a trend that level of FSH, testosterone, SHBG, and FTI was lower in exposed than in nonexposed group respectively, but there were no statistical significance. In exposed group, FSH level was correlated with age, ZPP, and blood lead; testosterone level was correlated with hemoglobin, blood lead, urine lead, and SHBG ; and FTI level was correlated with age. Conclusions : Level of some sex hormones were lower in exposed than in nonexposed group but there were no statistical significance between the exposed and the nonexposed group. But level of sex hormones were correlated with several biological markers of lead in exposed group. It suggests that occupational lead exposure might affect sex hormones.

PGA에 대한 면진받침의 손상도 해석 연구

김종인,김종윤,김태형 대구대학교 산업기술연구소 2009 産業技術硏究 Vol.20 No.1

Nowadays, The number of occurrence of earthquakes has increased and accordingly the damage caused by earthquake has also increased around the world. Because it is difficult for earthquakes to be predicted in advance and earthquakes often occur concurrently, the needs for the study on the effects of earthquake was increased. Probability theory accumulated during a long time enables engineers to deal with uncertainties of structure quantitatively and to judge stability of structure reasonably. Existing method calculates uncertainties by applying safety factors but the method cannot consider the safety of structures quantitatively. When various stages of structural damage are considered, if the number of uncertainties are many, then a method is needed for assessing vulnerability and damage state appropriately. This study aims not only to present the way for finding fragility curve of structures by using universal structural analysis program and general probability density function but also to compare seismic isolation performance.

PGA에 의한 교량의 손상도 곡선

김종인,이수철,김태형 대구대학교 산업기술연구소 2003 産業技術硏究 Vol.15 No.1

In performing a risk analysis of structure for earthquake, it is imperative to identify the vulnerability of structures associated with various stages of damage. And the earthquake resisting capability is needed for structures like bridge. So the damage analysis of bridges with or without isolator for earthquake effects is necessary. In this paper, the method for construction of fragility curve is presented. In doing that. general purpose structural analysis program and generally used probability density function are used. The results of structural analysis are represented by Bernoulli distribution which says damage or no damage. By the use of Maximum Likelihood Method. two parameters of lognormal distribution -median and standard deviation - are found. With them, the fragility curves are constructed. In this paper, the fragility curves of bridge are constructed with respect to PGA(Peak Ground Acceleration). The results of this study are as follows: (1) As the result according to research, we got the Fragility Curve to have median and standard deviation as 0.242 0.262 respectively. (2) For PGA, the fragility curve is distributed on relatively wide range of PGA. So it can be a good measure for evaluation of damage effect with respect to PGA.

生物學的 改良劑를 利用한 슬럿지의 脫水

김형석,신남철,이태호,박승조 동아대학교 환경문제연구소 1991 硏究報告 Vol.14 No.2

To conditioning sludge to occure in the course of food processing industry, after culturing Rhoodotorula glutinis, dosing a certain amount of culture solution into the sludge and measured the variation of total suspended solids and then, in the aerobic and anaerobic conditions after manage sludge, examining the result of measured specific resitance, the coefficient of cmopressibility to know the dewateability. Arrangements of this result are as follows : 1) As the result of total suspended solids concentration by change of aeration time and the amount of Rhodotorula glutinis dose, optimal dose was Rhodotorula glutinis 10㎖ by 20㎖ sludge. The very suitable aeration time was 4-5days. 2) After dosing biological conditioner(Rhodotorula glutinis) 60㎖ by 11 sludge in aerobic condition, aeration for five days. The results of specific resistance, the coefficient of compressibility were 22.71×10^(5)m/㎏ 1.6, respectively. 3) In the cases of using Rhodotoruls glutinis for biological conditioner, using polymer for chemical conditioner. This results are as follows : Biological conditioner ; the moisture content of sludge cake 77.7% Chemical conditioner ; the moisture content of sludge cake 70.3% But, I author propose that biological conditioner is more useful than chemicals in the total operating and maintenance cost.