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金永植 서울대학교 경제연구소 2006 經濟論集 Vol.45 No.2
본 小考는 김영식·박우영(2003)의 다부문 소규모 개방경제 실물경기변동모형에 국제이자율 수준에서의 海外借入(foreign borrowing)을 명시적으로 도입한 뒤, 산업부문별 총요소생산성 충격, 교역조건 충격 및 수출수요 충격이 산업연관성의 波及過程(propagation mechanism)을 통해 우리나라 제조업부문의 變動性(volatility)과 산업부문간 同調性(comovement)을 얼마나 설명할 수 있는가를 평가한다. 우선 모형에서 도출된 제조업 전체의 산출량과 고용의 변동성은 대체적으로 우리나라 제조업의 변동성과 일치하고, 투자의 경우는 실제보다 크게 나타났다. 한편 제조업 전체의 고용과 투자는 총 산출량과 양의 상관계수를 나타내며 산업부문 간 동조성은 그 크기가 실제 보다 다소 작게 나타나지만 대체적으로 양의 상관관계를 나타내었다. 이러한 동조성은 개별산업 간 중간재 및 투자재의 투입산출관계에 기초한 産業聯關性(intersectoral linkages)에 기인한 것으로 볼 수 있다.
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김영식,배차헌,김영식 대한용접접합학회 1991 대한용접·접합학회지 Vol.9 No.3
The purpose of this paper was to investigate the effect of deposition configuration on the mechanical properties of the flame sprayed titania ceramic coating. The sprayed deposition configuration was made in different five types with titania ceramic and Ni-base alloy on the mild steel substrate. The composite coating exhibited superior mechanical properties such as hardness, adhesive strength, thermal shock resistance and corrosion resistance, whereas the mixed coating proved to be more resistant to erosion. Especially graded coating, which consist of Ni-base alloy undercost, intermediate grade coat and titania ceramic overcost, showed excellent mechanical properties.
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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.
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티타니아 세라믹 熔射皮膜의 機械的 特性에 미치는 熔射條件의 影響에 관한 硏究
김영식,김영식,Kim, Yeong-Sik,Kim, Yeong-Sik 한국마린엔지니어링학회 1991 한국마린엔지니어링학회지 Vol.15 No.3
The purpose of this investigation is to examine the effects of spraying conditions on the mechanical properties of flame-sprayed titania ceramic coating layer. Titania ceramic was sprayed onto the mild steel substrate under the various spraying conditions. Spraying distances were 100, 150, 200, 250mm respectively and pinch air pressures were 0.2 0.3, 0.4 MPa at each spraying distance. The mechanical properties such as microhardness, adhesive strength and erosion wear resistance were tested for the specimens sprayed under the various spraying conditions above mentioned. The optimum operational conditions obtained through the experimental results were 150mm of spraying distance and 0.3 MPa of pinch air pressure.
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김영식,권희정,이혜경 대한진단검사의학회 2009 Annals of Laboratory Medicine Vol.29 No.2
Background : The objective of this study was to evaluate the role of proteases on the degradation of parathyroid hormone (PTH) in blood samples. Methods : Protease inhibitors with specificity against serine proteases (aprotinin), cysteine proteases (E-64), serine and cysteine proteases (leupeptin), metalloproteases (EDTA), or a protease inhibitor cocktail with a broad spectrum of inhibitory activity were added to blood samples. After storage at room temperature (0-48 hr), PTH levels were measured. Results : PTH levels in samples with the protease inhibitor cocktail did not change significantly after 48 hr of storage at room temperature, but the average PTH levels decreased by 40.7% and 20.1%, in samples stored at room temperature and stored at 4°C without protease inhibitors, respectively. PTH levels in samples with leupeptin were stable for up to 24 hr. After 48 hr, the mean PTH levels decreased by 17.1%, 16.0%, 26.2%, and 32.1%, with 500 KIU/mL aprotinin, 100 μmol/L leupeptin, 10 μmol/L E-64, and 10 μmol/L EDTA, respectively, in the samples stored at room temperature. Conclusions : The decrease in PTH levels in blood samples seemed to be due to the degradation of PTH by proteases. Various proteases, including especially serine proteases, would act together to degrade PTH in blood specimen. The PTH degradation may be inhibited in blood specimen with protease inhibitor cocktail. Background : The objective of this study was to evaluate the role of proteases on the degradation of parathyroid hormone (PTH) in blood samples. Methods : Protease inhibitors with specificity against serine proteases (aprotinin), cysteine proteases (E-64), serine and cysteine proteases (leupeptin), metalloproteases (EDTA), or a protease inhibitor cocktail with a broad spectrum of inhibitory activity were added to blood samples. After storage at room temperature (0-48 hr), PTH levels were measured. Results : PTH levels in samples with the protease inhibitor cocktail did not change significantly after 48 hr of storage at room temperature, but the average PTH levels decreased by 40.7% and 20.1%, in samples stored at room temperature and stored at 4°C without protease inhibitors, respectively. PTH levels in samples with leupeptin were stable for up to 24 hr. After 48 hr, the mean PTH levels decreased by 17.1%, 16.0%, 26.2%, and 32.1%, with 500 KIU/mL aprotinin, 100 μmol/L leupeptin, 10 μmol/L E-64, and 10 μmol/L EDTA, respectively, in the samples stored at room temperature. Conclusions : The decrease in PTH levels in blood samples seemed to be due to the degradation of PTH by proteases. Various proteases, including especially serine proteases, would act together to degrade PTH in blood specimen. The PTH degradation may be inhibited in blood specimen with protease inhibitor cocktail.
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수경재배시 $\textrm{NO}_3$-N과 $\textrm{NH}_4$-N의 비율이 잎들깨의 생육에 미치는 영향
김영식 한국생물환경조절학회 1993 생물환경조절학회지 Vol.2 No.2
The effect of NO$_3$-N and NH$_4$-N ratio on the growth of Perilla frutescens in deep flow culture was studied in winter season. NO$_3$-N and NH$_4$-N were treated in the ratios of 12 : 0, 9 : 3, 6 : 6(me/ $\ell$ ). The pH of the nutrient solution was increased an NO$_3$-N:NH$_4$-N=12 : 0 treatment, and decreased in the treatments containing NH$_4$-N, greatly in NO$_3$-N : NH$_4$-N = 6 : 6 treatment. The EC was increased regardless of treatments, but more increased in the treatments containing NH$_4$-N. The stem-base circumference, plant height, root weight, shoot weight, and yields of leaves were by far the highest in NO$_3$-N:NH$_4$-N=6 : 6 treatment and the lowest in NO$_3$-N:NH$_4$-N= 12 : 0 treatment. Among the mineral contents of leaves, N, K, Fe and P were higher in the treatments containing NH$_4$-N. Ca, Mg and Mn were higher in NO$_3$-N :NH$_4$-N= 12 : 0 treatment.
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