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초내열합금분말에 의한 PTA 오버레이부의 연삭 마모 특성 연구
김영식,최영국,임창훈,김종도,Kim, Young-Sik,Choi, Young-Gook,Lim, Chang-Hoon,Kim, Jong-Do 대한용접접합학회 2009 대한용접·접합학회지 Vol.27 No.3
The Plasma Transferred Arc (PTA) overlay welding method is lately introduced as one of the most useful surface overlay method of the engine component. In this paper, the overlay welding on the SNCrW heat resisting alloy was conducted by the PTA overlay welding process using the super alloy powder. The characteristics of the overlay layers were investigated through the metallurgical and abrasive test. Experimental results showed that the overlay on the SNCrW heat resisting alloy surface was successfully made without hot cracking. The friction wear characteristics of the Co-base Stellite 6 overlayer were most superior. However the abrasive wear characteristics were most inferior in the Co-base Stellite 6 overlayer.
가정의학과 외래 우울증환자에서 moclobemide의 안전성 및 유효성 평가를 위한 시판후조사
김영식,이근미,김병성,신호철,성은주,이상엽,문유선,송상욱,김철환,선우성,Kim, Young-Sik,Lee, Keun-Mi,Kim, Byung-Sung,Shin, Ho-Cheol,Sung, Eun-Ju,Lee, Sang-Yeoup,Moon, Yoo-Sun,Song, Sang-Wook,Kim, Cheol-Hwan,Sunwoo, Sung 대한임상약리학회 2002 臨床藥理學會誌 Vol.10 No.1
Background : Depression is quite a common disease in primary care however, studies for the safety and effectiveness of antidepressants in primary care setting are rare in Korea. Objectives : This multi-centered post-marketing study was performed to evaluate the safety and effectiveness of Moclobemide and to find out the factors related to the adherence among patients with depression in family practice. Methods : A total of 386 patients were enrolled from July 1999 to January 2000 by twenty family doctors from fifteen family practice centers. They were prescribed Moclobemide and were reevaluated at the 4th, 8th, and l2th week. Evaluation of compliance, safety and effectiveness were performed with pre-made, structured self-reported questionnaires. Evaluation of effectiveness was also performed utilizing self-rating depression scale (SDS). Results : Among 386 patients, safety was evaluated in 310 patients and effectiveness was evaluated in 239 patients. During the first 12 weeks, the number of subjects continuing with Mocclobemide was 136(37.1%). 141 subjects (38.4%) discontinued taking the drug and 90 subjects (24.5%) dropped out at the 12th week. Considering drop-out patients as ineffective cases, overall effectiveness was estimated to be 84.5%. Symptoms improved with time in patients whose follow-up were completed (P<0.01). The SDS score decreased by an average of ${6.8{\pm}9.1(12.2{\pm}19.1%)}$ after 12 weeks(p<0.01). During the study, 33(10.6%) subjects reported adverse events. The most commonly reported adverse events, in descending order, were dizziness(2.3%), headache(1.6%), insomnia(1.3%), facial edema(1.3%), constipation(1.0%), nausea(1.0%) and tremor(1.0%). The main reasons for discontinuing antidepressants were attributed to improvement of symptoms and manifestation of adverse events. Conclusion : The percentage of adherence at 12th week of Moclobemire among patients suffering from depression in the family practice outpatient clinic was shown to be 49%. The antidepressant effect and safety of Moclobemide was relatively superior.
레토르트 및 감마선 조사에 의한 화닭 덮밥 소스의 미생물 제어 효과 비교
김영식,김현주,윤요한,신명곤,김천제,신미혜,이주운,Kim, Young-Sik,Kim, Hyun-Joo,Yoon, Yo-Han,Shin, Myung-Gon,Kim, Cheon-Jei,Shin, Mee-Hye,Lee, Ju-Woon 한국축산식품학회 2010 한국축산식품학회지 Vol.30 No.1
This study evaluated the antimicrobial effects of retort process and gamma irradiation on reduction of total bacterial populations in spicy chicken sauce, which is served on top of the steamed rice. Commercial spicy chicken sauce was treated with retort and gamma ray at 0, 1, 3, 5, and 10 kGy. Total aerobic bacterial populations were then enumerated on plate count agar and isolated bacteria from the test samples were identified using PCR analysis. Moreover, gamma ray sensitivity of identified bacteria was evaluated by $D_{10}$ values, and genotoxicity of gamma-irradiated samples was examined. Gamma irradiation at 3 kGy reduced total aerobic bacterial cell counts in spicy chicken sauce below detection limit, but total aerobic bacterial cell counts in test samples treated with retort were 2.1 log CFU/g. Identified bacteria from the samples were Bacillus subtilis, B. amyloiquefaciense, and B. pumils, and the $D_{10}$ values for B. subtilis and B. cereus were 0.39 ($R^2\;=\;0.921$) and 0.28 log CFU/g ($R^2\;=\;0.904$), respectively. The SOS chromotest showed that the gamma-irradiated spicy chicken sauce did not cause mutagenicity. These results indicate that gamma irradiation of spicy chicken sauce could be useful in ensuring microbial safety.
김영식,Kim, Young-Sik 한국환경보건학회 2005 한국환경보건학회지 Vol.31 No.1
This study was carried out to provide radon concentration and exposure in building. The average radon concentrations of building was measured 1.37 pCi/L in basement, 0.95 pCi/L in 1st layer, 0.74 pCi/L in 2nd layer, 0.56 pCi/L in 3rd layer, and 0.4 pCi/L in 4th layer, respectively. The average radon concentration of basement was measured the higher than any other stairs. Daily average distribution of radon concentrations in building shown that radon concentrations measured in morning at 8hr was the highest value. Monthly average distribution of radon concentrations shown 0.28 ${\pm}$ 0.17 pCi/L in April and 0.82 pCi/L in December that was the highest value. The average concentrations of radon was measured 0.38pCi/L in spring. 0.44 pCi/L in summer, 0.53 pCi/L in autumn, and 0.67 pCi/L in winter, respectively. This result shown that the average concentrations of radon in winter was the higher than any other seasons. That reasons was supposed that effect of number of exchanges and using air conditions was the higher in summer than winter.
김영식 대구보건대학 1996 대구보건대학 論文集 Vol.16 No.-
앞으로 정보화사회는 기존의 매체에 다른 매체들과 통신이 어우러진 복합적인 양상을 보이고 있고 수용자도 수동적인 매체접촉형태에서 능동적이고 적극적인 접촉형태를 보여주고 있다. 특히 정보화시대에 주목받는 뉴미디어 중에서 케이블 텔레비전은 수용자의 폭넓은 채널선택과 지방자치시대에 지역성을 실현할 수 있는 매체로 손꼽고 있다. 따라서 정보화시대에 케이블 텔레비전의 역할과 정보화 사회로 인한 사회변화를 살펴보고자 한다.