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).

지표발파시 주파수 특성에 관한 연구

강추원,고진석,이형주 조선대학교 에너지.자원신기술연구소 1998 에너지·자원신기술연구소 논문지 Vol.20 No.1

One of the most troublesome and controversial issues facing the construction is that of ground vibrations, fly rock and air blasts produced from blasting Particularly, ground vibrations bring on directly or indirectly many damages On this study, data of vibration was collected in rock blasting then analyzied data and frequency characterizations of blasting vibration was studied The results can be summarized as follow 1 the formular of square and cube root scaled distance which have a confidence level at the point of 95% are as follows V = 6159.564(D/W^(1/2))^(-1 824) V = 11368.677(D/W^(1/3))^(-1 846), respectively 2 It was found that is proper to get principal frequency by Fast Fourier Transform among two methods 3. This study suggests that new allowable values of vibration according to frequency Namely, If principal frequency is more than 20㎐, then allowable values of vibration should be 0 5㎝/sec and less than 20㎐, then allowable values of vibration should be 0 3㎝/sec.

혈액투석 환자의 가족지지, 무력감과 자가간호와의 관계 연구

이강오,이미숙,백영주 朝鮮大學校 附設 醫學硏究所 1996 The Medical Journal of Chosun University Vol.21 No.1

This study was designed to investigate the correlations between family support, Powerlessness. and self-care of hemodialysis patients. One hundred thirty seven hemodialysis patients with chronic renal failure from 2 university hospitals, 2 general hospitals, and 2 medical cilinics in Kwang-ju. were accidental sampled. The data were collected from September 16 to 30, 1995. by the questionnaire method. The instrment used for measuring family support was Kang's Family Support Scale, powerlessness was developed by the researcher from the literature review, and self-care was developed by Kim and Youm and was modified by the resecher. The data were analyzed by t-test, ANOVA, and Peatson's correlation coefficient. The results of the study were as follows: 1. Average family support score of subjects was 33.71. 2. Average powerlessness score of subjects was 70.03. 3. Average seof-care score of subjects was 63.28. 4. Relatinoships between general characteristics and variables were as follows 1) There was sighificant difference between family income and family support(F=6.90.p=.000). 2) Three were significant difference betweem present family income and family support(F=6.90, p=.000), 3) There was significant difference between medical insurance and self-care (t= 2.52, p=.013). 5. Correltions betweem family support, powerlessness, and self-care were as follows 1) The first hypothesis, "the higher the level of family support in patients on hemodialysis, the lower the level of powerlessness will be," was supported(r=-.233. p=.022). 2) the second hypothesis, "the higher the level of family support in patients on hemodialysis, the higher the level of self-cate will be." was supported(r=.235, p=.019). 3) The third hypothesis, "the lower the level of powerlessness in patients on hemodialysis, the higher the level of self-cate will be," was not supported(r=-.033. p=.740).

계측위치와 자유면 방향에 따른 지반진동 특성 연구

강추원,양해승,이수연 조선대학교 에너지.자원신기술연구소 1999 에너지·자원신기술연구소 논문지 Vol.21 No.2

The free face is an important part in the blasting design and plan. Most of study on the free face is referred to concern with fragmentation volume and determination of charge per delay. But the characteristic of vibration for the direction of the free face short of studies. This study shows the difference and characteristics of the vibration velocity for the measuring point and the direction of the free face. At the velocity of vibration, the back of the free face is over the front (Probably 1.20~1.29 times). A nomogram was made in relation to the maximum charge weight per delay on the basis of the 95% vibration blast equation and the velocity of vibration allowance set 5㎜/sec. Scaled distance was 29.71㎏/m^(1/2), 39.63㎏/m^(1/3) on the front of the free face and 34.03㎏/m^(1/2), 45.20m/㎏^(1/3) on the back of the free face.

完全高密度化된 液相燒結試片의 液相吸入現象에 미치는 固相粒子크기의 영향

權五鍾,李周翰,姜大甲 慶北大學校 1984 論文集 Vol.38 No.-

The effect of Co grain size on the liquid absorption of completely densified Co-Cu compacts by liquid phase sintering is investigated. The compacts of which composition is 80 wt. % Co-20 wt. % Cu, were prepared by ordinary powder metallurgy techniques. To eliminate pores completely and to vary the average size of solid Co grains, the compacts were sintered at 1250℃ for from 1.5-up to 32 hours. A small pellet of 11 wt. % Co-89 wt. % Cu was put into a small hole drilled at the specimen surface. Then the assembly was annealed at the same temperature for from one up to 17 hours. The pellet melted immediately and formed a liquid pool. The presintered body absorbed liquid from the pool. The smaller the solid grain size, the more liquid was absorbed. The amount of the absorbed liquid also increased with the increase of annealing time. The driving force of liquid absorption is expected to be the tendency of anhedral solid grains to restore spherical shape, of which interfacial free energy is lower.

Biochemical Rather than Virologic Response to Interferon Therapy may be More Closely Associated with Decrease of Hepatocellular Carcinoma Incidence in Patients with Chronic Hepatitis B

( Dan Bi Lee ),( Young Hwa Chung ),( Sae Hwan Lee ),( Yoon Seon Lee ),( Don Lee ),( Jeong Eun Hwang ),( Kang Mo Kim ),( Young Suk Lim ),( Han Chu Lee ),( Eun Sil Yu ),( Young Sang Lee ),( Dong Jin Suh 대한소화기학회 2007 Gut and Liver Vol.1 No.1

Background/Aims: The authors examined whether the response to interferon (IFN) therapy can affect the development of hepatocellular carcinoma (HCC) in chronic hepatitis B (CHB) patients. Methods: Out of 353 biopsy-proven CHB patients, 229 (65%) were treated with IFN-α for 6 to 12 months. They were followed for a median period of 75 months (range, 6-120). In patients treated with IFN, biochemical and virologic responses were evaluated at the end of treatment (EOT). The cumulative incidence rates of HCC were calculated and analyzed in relation to baseline characteristics as well as biochemical and virologic responses to IFN therapy. Results: The overall cumulative incidence of HCC was 0%, 0.8%, 3.7% and 5.5% at 3, 5, 7 and 8 years, respectively. Age, serum AFP levels and the stage of fibrosis were significantly associated with the occurrence of HCC. As a whole, IFN therapy did not affect the occurrence of HCC. Among the patients treated with IFN, biochemical responders had low HCC incidence rates compared with non-responders (p=0.018). However, the HCC incidence rates of virologic responders were not different from non-responders (p=0.203). Conclusions: Biochemical rather than virologic response to IFN therapy may be more closely associated with decrease of HCC incidence in CHB patients. (Gut and Liver 2007;1:49-55)

Comparison between CFD Analysis and Experiments According to Various PEMFC Flow-field Designs

Lee, Kang-In,Lee, Se-Won,Park, Min-Soo,Cho, Yong-Hun,Cho, Yoon-Hwan,Chu, Chong-Nam,Sung, Yung-Eun The Korean Electrochemical Society 2009 한국전기화학회지 Vol.12 No.1

Flow-field design has much influence over the performance of proton exchange membrane fuel cell (PEMFC) because it affects the pressure magnitude and distribution of the reactant gases. To obtain the pressure magnitude and distribution of reactant gases in five kinds of flow-field designs, computational fluid dynamics (CFD) analysis was performed. After the CFD analysis, a single cell test was carried out to obtain the performance values. As expected, the pressure differences due to different flow-field configurations were related to the PEMFC performance because the actual performance results showed the same tendency as the results of the CFD analysis. A large pressure drop resulted in high PEMFC performance. The single serpentine configuration gave the highest performance because of the high pressure difference magnitudes of the inlet/outlet. On the other hand, the parallel flow-field configuration gave the lowest performance because the pressure difference between inlet and outlet was the lowest.

Electroacupuncture for migraine protocol for a systematic review of controlled trials

Chu, Hongmin,Seo, Jihye,Kim, Cheolhyun,Moon, Yeonju,Kang, Dae Gill,Lee, Ho Sub,Sung, Kang-Keyng,Lee, Sangkwan Williams & Wilkins Co 2018 Medicine Vol.97 No.17

<P><B>Abstract</B></P><P><B>Background and Objective:</B></P><P>A migraine is one of the primary headache disorders. Acupuncture has been widely used to treat migraine. Furthermore, electroacupuncture (EA) treatment has been also used to treat migraine. However, there has been no systematic review by assessing efficacy and safety of EA on migraine. This protocol is developed to conduct a systematic review and meta-analysis to evaluate the evidences related to the effectiveness and safety of EA on migraine.</P><P><B>Methods and analysis:</B></P><P>This protocol follows the guideline according to the Preferred Reporting Items for Systematic reviews and Meta-Analysis Protocol and registered on the International Prospective Register of Systematic Reviews (PROSPERO). The following seven databases will be searched from their inception to September 2016: Medline, the Cochrane Central Register of Controlled Trials (CENTRAL), EMBASE, OASIS, the Korean Traditional Knowledge Portal, the Korean Medical Database and the China National Knowledge Infrastructure (CNKI). This Systemic review will include only the randomized controlled clinical trials (RCTs) of acupuncture therapy on migraine. We will perform data extraction, study selection, assessment with risk of bias and data analysis. The primary outcomes of this study are headache pain intensity and the total treatment effective rate. And this protocol study for systematic reviews, the approval of IRB was not required.</P><P><B>Ethics and dissemination:</B></P><P>This systematic review will not need ethical approval, because it doesn’t involve human beings. We will publish this systematic review electronically in a peer-reviewed journal. This systematic review will give healthcare practitioners good practical guide and information for treating migraine.</P><P><B>Systematic review registration:</B></P><P>PROSPEROCRD42018085099</P>

Efficient White Phosphorescent Organic Light-emitting Diodes for Solid-State Lighting Applications Using an Exciton-confining Emissive-Layer Structure

Lee, Jong-Hee,Lee, Jeong-Ik,Lee, Joo-Won,Lee, Jun-Yeob,Kang, Dong-Min,Yuanc, Wei,Kwon, Soon-Ki,Chu, Hye-Yong The Korean Infomation Display Society 2009 Journal of information display Vol.10 No.2

Highly efficient blue and white phosphorescent organic light-emitting diodes (PHOLEDs) with an exciton-confining structure were investigated in this study. Effective charge confinement was achieved by stacking two emitting layers with different charge-transporting properties, and blue PHOLEDs with a maximum luminance efficiency of 47.9 lm/W were developed by using iridium(III) bis(4,6-(difluorophenyl) pyridinato-N,C2')picolinate (FIrpic) as an electrophosphorescent dopant. Moreover, when the optimized green and red emitting layers were sandwiched between the two stacked blue emitting layers, white PHOLEDs (WOLEDs) with peak external and luminance efficiencies of 19.0% coupling technique.and 54.0 lm/W, respectively, were obtained without the use of any out-coupling technique.

신장 이식 후 발생한 골수 이형성 증후군 1예

이철우,이현아,박민선,김진국,김원배,이희발,황승덕,이유경,강문수,추원석 대한신장학회 1999 Kidney Research and Clinical Practice Vol.18 No.1

A 44-year-old man treated with azathioprine, cyclosporine and prednisolone for 7.5 years after allogeneic renal transplantation was admitted because of exertional dyspnea, fatigue and pancytopenia which were found 3 months ago. He had been on hemodialysis for renal failure of unknown cause for 8 months before the renal transplantation. Bone marrow examination showed hypercellularity, erythroid hyperplasia and 7% of myeloblast, consistent with the diagnosis of myelodysplastic syndrome. Cytogenetic study showed chromosomal abnormalities:deletion of chromosome 5, monosomy 7, trisomy 8, monosomy 14 and deletion of chromosome 17. Immunosuppressive agents were discontinued and he was treated with transfusion, G-CSF, and combination chemotherapy including topotecan and Ara-C. Graft kidney function was normal before and after the treatment, but the clinical course was fatal because of leukemic transformation and eventually sepsis. Although therapy induced myelodysplastic syndrome was rare in renal allograft recipients, thorough evaluations including bone marrow biopsy and cytogenetic study are recommended in patients with anemia of unknown etiology.