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김세주,김영신,최낙경,서동향,이병철,이만홍 大韓神經精神醫學會 2001 신경정신의학 Vol.40 No.2
연구목적: 일반적으로 자살과 자살 사고의 가장 주된 위험 인자는 우울증, 불안장애와 같은 정신과적 질환의 동반 유무이다. 그러나 정신과적 질환 외에 신체적 질환의 동반 유무 또한 자살 및 자살 사고에 영향을 미치는 것으로 알려져 있다. 일반적인 신체 질환과 마찬가지로 뇌졸증 환자들에 있어 자살율이 증가한다는 몇몇의 보고들이 있다. 그러나 우리나라에서는 뇌졸중 환자의 자살 사고에 대한 연구가 보고된 바가 없다. 따라서 본 연구에서는 급성기 뇌졸중 환자들을 대상으로, 자살 사고의 발현율을 조사하고, 자살 사고 유무에 따른 사회문화적 변인 및 신경과적, 정신과적 임상 양상에 있어서의 차이에 대해 알아보고자 하였다. 방법: 1999년 7월부터 2000년 6월까지 한림대학교 성심병원 뇌졸중 센터에 입원한 77명의 급성기 뇌졸중 환자를 대상으로 하였다. Beck Suicidal Ideation Scale(BSIS)을 이용하여 자살 사고를 평가하였고, 우울 증상과 불안 증상은 각각 Beck Depression Inventory(BDI)와 Beck Anxiety Inventory(BAI)를 사용하였다. 사회적 지지체계의 정도는 사회적 지지체계 척도(Social Support Scale)를 사용하였으며, 뇌졸중 후 신경학적 장애의 정도는 National Institutes of Health Stroke Scale(NIHSS)와 Barthel's Index를 사용하였다. 결과: 약 35%의 뇌졸중 환자들이 심한 자살 사고를 보고하였다. 심한 자살 사고군에서 심하지 않은 자살 사고군에 비해 BDI, BAI 그리고 사회적 지지체계 척도 점수가 높은 반면, Barthel's index와 NIHSS는 두 군간에 유의한 차이를 보이지 않았다. 심한 자살 사고를 지닌 뇌졸중 환자의 대부분은 우울 증상이나 불안 증상을 가지고 있었으나, 일부의 환자들은 우울 증상이나 불안 증상 없이 자살 사고를 보고하였다. 결론: 급성기 뇌졸중 환자들의 많은 수가 정신과적 평가와 개입이 필요한 자살 사고를 가지고 있었다. 따라서 모든 급성기 뇌졸중 환자들을 대상으로 정기적으로 불안 및 우울 증상에 대한 평가와 더불어 직접 또는 간접적인 방법을 통한 자살 사고의 평가가 반드시 필요할 것으로 생각된다. Objective: The presence of psychiatric disorders including depression and anxiety disorders is considered to be the most important risk factor of suicide. Also, suicidal risk is known to be increased in patients who have serious medical illnesses. Like in patients with other medicalillness, some authors reported that suicidal risk is increased in patients with stroke. But there have been no reports with korean patients. The aim of this study is to investigate the frequency of suicidal ideation of patients in the acute stage of stroke, and to examine the demographic characteristics, and psychiatric and neurological symptoms between the patients with and without suicidal ideation. Method: Seventy seven hospitalized stroke patients at the Hallym Stroke Center from July of 1999 to June of 2000 were included in this study. Beck Suicidal Ideation Scale(BSIS) was used to evaluate suicidal ideation. Beck Depression Inventory(BDI) and Beck Anxiety Inventory(BAI) for depression and aniety, and Social Support Scale(SSS) for social support system of the stroke patients were used. Neurologic disabilities were rated with National Institutes of Health Stroke Scale(NIHSS) and Barthel's Index. Results: Thirty five percent(N=27) of the stroke patients reported severe suicidal ideation. Scores of BDI, BAI and SSS were higher in the patients with severe suicidal ideation than their counterpart. There were no differences in Barthel's index score and NIHSS between two groups. Most patients with severe suicidal ideation had depressive or anxiety symptoms. But patients without depressive or anxiety symptoms also reported severe suicidal ideation. Conclusions: Thirty five percent of stroke patients in acute stage of their illness have severe suicidal ideation that requires careful psychiatric evaluation and intervention. Inclusion of routine assessment of suicidal ideation in these patients is recommended.
주요우울증이 근로자의 생산성에 미치는 영향 : WHO-HPQ(Health and Work Performance Questionnaire)를 이용한 예비연구
김원,황태연,함병주,이준석,최병휘,김세주,서용진,강은호,우종민 大韓神經精神醫學會 2007 신경정신의학 Vol.46 No.6
Objectives : Major depressive disorder (MDD) causes patients' distress and makes socioeconomic burden, both directly and indirectly. We used the concept of lost productive time (LPT) to estimate the indirect costs and calculated both absenteeism and presenteeism among workers with MDD. Mcthods : Depression group was recruited from workers visiting psychiatric outpatient clinic who had MDD without major physical or mental disorders (N= 106). Age and sex matched healthy control group was also recruited through advertisement (M=100). All participants completed a interview using WHO Health and Work Performance Questionnaire (HPQ), Job Stress Measurement Scale for Korean Employees, and Hamilton Rating Scale for Depression. Statistical analysis was performed with independent t-test or χ² test as characteristics of values (p=0.05). Results : The number of absence (0.94-day/month vs. 0.10-day/month, P=0.015) andthe numberofearly leaving (2.56-day/month vs. 0.24-day/month, P<0.001) were significantly higher in the depression group. Depression group evaluated their Perfor-mance level much lower than controls with significant value (5.16 vs. 7.62, P<0.001). In addition, depression group estimated their performance level during the last 4 weeks lower compared to the level of past 1-year (5.16 vs 6.63, P<0.001). The estimated costs of absenteeism in depression group were higher than controls by 2,520,000 Korean Won per year, and those of presenteeism were also higher by 4,880,000 Korean Won per year. The total costs of LPT in depression group were higher than controls by 7,400,000 Korean Won, which corresponds to 26% ofmean annual salary. In addition, the level of occupational stress, such as high demand and interpersonal conflict, was higher in the depression group. Conclusion : Major depressive disorder costs substantial productivity loss to workers and their company. Presenteeism imposes more time cost than absenteeism. Effectiveness trials are needed to devise cost-effective programs for the early detection and treatment of depression at the workplace.
( Seo Byoung Joo ),( V. J. Rejish Kumar ),( Rather Irfan Ahmad ),( Byung Chun Kim ),( Wan Park ),( So Deuk Park ),( Se Eun Kim ),( Sang Dal Kim ),( Jeong Heui Lim ),( Yong Ha Park ) 한국미생물 · 생명공학회 2012 Journal of microbiology and biotechnology Vol.22 No.1
The biological control efficacy of a greenhouse soil bacterial mixture of Lactobacillus farraginis, Bacillus cereus, and Bacillus thuringiensis strains with antinematode activity was evaluated against the root-knot nematode Meloidogyne incognita. Two control groups planted in soil drenched with sterile distilled water or treated with the broadspectrum carbamate pesticide carbofuran were used for comparison. The results suggest that the bacterial mixture is effective as a biocontrol agent against the root-knot nematode.
( Byung Chul You ),( Young Seok Kim ),( Hun Il Kim ),( Se Hun Kim ),( Seung Sik Park ),( Yu Ri Seo ),( Sang Gyune Kim ),( Se Whan Lee ),( Hong Soo Kim ),( Soung Won Jeong ),( Jae Young Jang ),( Boo Su 대한간학회 2012 Clinical and Molecular Hepatology(대한간학회지) Vol.18 No.3
Background/Aims: When combined with pegylated interferon alpha-2b (Peg-IFN α-2b) for the treatment of genotype 1 chronic hepatitis C (CHC) in Korea, the current guideline for the initial ribavirin (RBV) dose is based on body weight. However, since the mean body weight is lower for Korean patients than for patients in Western countries, current guidelines might result in Korean patients being overdosed with RBV. Methods: We retrospectively reviewed the medical records of patients with genotype 1 CHC who were treated with Peg- IFN α-2b and RBV combination therapy. We divided the patients into groups A (≥15 mg/kg/day, n=23) and B (<15 mg/kg/ day, n=26), given that the standard dose is 15 mg/kg/day. The clinical course in terms of the virologic response, adverse events, and dose modification rate was compared between the two groups after therapy completion. Results: The early response rates (92.0% vs. 83.3%, P=0.634) and sustained virologic response rates (82.6% vs. 73.1%, P=0.506) did not differ significantly between the two groups. During the treatment period, the RBV dose reduction rate was significantly higher in group A than in group B (60.9% vs. 23.1%, P=0.01). Conclusions: RBV dose reduction is performed frequently when patients are treated according to the current Korean guidelines. Given that lowering the RBV dose did not appear to decrease the virologic response during therapy, reducing RBV doses below the current Korean guideline may be effective for treatment, especially in low-weight patients. (Clin Mol Hepatol 2012;18:272-278)
( Se Chul Hong ),( Mi Young Son ),( Hyo Jin Jeong ),( Byung Man Chae ),( Duek Hyeon Kim ),( Seok Hwan Lee ),( Eun Ju Seo ),( Dong Jun Kang ) 한국폐기물자원순환학회(구 한국폐기물학회) 2021 한국폐기물자원순환학회 춘계학술발표논문집 Vol.2021 No.-
The use of waste battery waste has become an issue due to the rapid increase in the use of trains and secondary batteries. It is urgent to develop the same lightweight metal material and develop anode material technology. The safety problem of the battery for the electric vehicle continues to continue, and recently, the toxic gas problem due to the explosion of the electric vehicle battery has also been raised. In this study, the battery was disassembled into a module from a battery for an electric vehicle, and separated from the module into a circuit board, a battery cell, and a frame. After the separation of the anode cathode material and the Al case from the battery cell through repair and dis assembly, the anode cathode material Was dried by discharging in distilled water, and separated into a separator, an anode, and a cathode. In order to recover the positive electrode active material, the positive electrode active material is concentrated in the positive electrode material through pulverization particle size separation on the positive electrode material, and Al, an impurity, is separated in this process. As a chemical treatment method, a leaching experiment was conducted using sulfuric acid and a reducing agent to prepare a precursor for a positive electrode active material of Samsung based on pulverized products obtained through particle size separation. Then, a positive electrode active material was prepared using a co-precipitation method as a target for the leaching solution from which impurities were removed. After the co-precipitation, the remaining lithium filtrate was precipitated with lithium carbonate solution, filtered, washed with water, and recovered with lithium carbonate. Cost reduction is expected by applying this technology to recover and materialize valuable metals.