http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
류봉조,임경빈,이규섭,송영봉,공용식,오부진 한밭대학교 생산기반기술연구소 2002 생산기반기술연구소 논문집 Vol.2 No.1
The paper deals with stress and deflection analyses for newly developed PP-pipe structures of LG-Caltex company. In order to calculate the values of stress and deflection, the elements of pipes and its hanger supports are discretized. Through the numerical simulations using commercial FEM code, stresses and deflections of pipes with two or more hanger supports are obtained, and the stability of pipes are checked. Finally, optimal numbers of hanger supports satisfying allowable bending stress is proposed.
Algorithms for Optimal Designs for Highly Correlated Computer Experiments
Lim, Yong Bin 梨花女子大學校 韓國生活科學硏究院 1991 韓國生活科學硏究院 論叢 Vol.47 No.-
이 논문에서는 컴퓨터 모형을 Gaussian 확률과정으로 가정하여 컴퓨터 실험에 대한 최적 실험 계획을 위한 알고리즘이 개발되었고, 몇 가지 경우의 최적 실험 계획을 위하여 알고리즘이 수행되어 졌다. In a computer experiment, observations are made on a response function by running a (typically complex) computer model at various choices of input factors, χ. The computer models we address here are deterministic; replicate observations from running the computer code with the same inputs will be identical. We assume the stochastic process model with the gaussian covariance structure, Cov(Y(ω), Y(χ))=σ^2ㆍexp(-θ∥ω-χ∥^2). The design problem is to choose a number of inputs at which to run the computer model and observe the output. We consider the problems of predicting the output over a region of interest. The design is chosen to minimize ^JIMSE, the mean square error (MSE) ^Jχ of the Best Linear Unbiased Predictor (BLUP) of Y(χ), integrated over the region of interest. The primary problem we address here is that of expressing ^JIMSE as θ^mh(χ_1, …, χ_n)+O(θ^(m+1)), and then finding design points to minimize the coefficient of θ^m in ^JIMSE. The resulting design is called an asymptotic optimal design. The main purpose of this paper is to develope an algorithm for asymptotic optimal design.
Antiviral effect of Chios mastic gum through inhibiting host cell entry of influenza A virus
Yong-Bin Cho,In-Gu Lee,Yong-Hyun Joo,Hoyeon Jeon,Young Hyun Lim,Dong-In Kim,Young-Jin Seo 한국실험동물학회 2021 한국실험동물학회 학술발표대회 논문집 Vol.2021 No.7
Chios mastic gum (CMG) is a natural resin made from the sap of the mastic tree (Pistacia lentiscus), a Mediterranean crop. Although CMG has been used to treat gastrointestinal malfunctions and bacterial infections for more than 2500 years, little is known about its antiviral activity. CMG is known to influence multiple cellular processes such as cell proliferation, differentiation, and apoptosis. Since virus replication is completely dependent on the host cellular metabolism, CMG possibly regulates virus infectivity. Influenza, commonly known as ‘flu’, is an infectious respiratory disease in humans caused by influenza virus infections. In this study, we evaluated CMG’s potential as an antiviral drug to treat influenza A virus (IAV) infection. CMG dramatically reduced the cytopathogenic effect and increased the cell viability upon IAV infection. Also, CMG suppressed the expression of viral RNAs and proteins. Interestingly, CMG interfered with the early stage of the virus life cycle after viral attachment. Importantly, the intranasal administration of CMG greatly reduced viral replication in the lungs of IAV-infected mice. Moreover, CMG treatment ameliorated morbidity and mortality of the IAV-infected mice. Collectively, these results suggest that CMG displays a potent anti-IAV activity by blocking the early stage of viral replication. Thus, mastic gum could be used as a novel therapeutic agent to treat IAV infection. Furthermore, we believe that this study could expand the application of CMG to other viruses.
Photochemical organonitrate formation in wet aerosols
Lim, Yong Bin,Kim, Hwajin,Kim, Jin Young,Turpin, Barbara J. Copernicus GmbH 2016 Atmospheric Chemistry and Physics Vol.16 No.19
<P>Abstract. Water is the most abundant component of atmospheric fine aerosol. However, despite rapid progress, multiphase chemistry involving wet aerosols is still poorly understood. In this work, we report results from smog chamber photooxidation of glyoxal- and OH-containing ammonium sulfate or sulfuric acid particles in the presence of NOx and O3 at high and low relative humidity. Particles were analyzed using ultra-performance liquid chromatography coupled to quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF-MS). During the 3 h irradiation, OH oxidation products of glyoxal that are also produced in dilute aqueous solutions (e.g., oxalic acids and tartaric acids) were formed in both ammonium sulfate (AS) aerosols and sulfuric acid (SA) aerosols. However, the major products were organonitrogens (CHNO), organosulfates (CHOS), and organonitrogen sulfates (CHNOS). These were also the dominant products formed in the dark chamber, indicating non-radical formation. In the humid chamber (> 70 % relative humidity, RH), two main products for both AS and SA aerosols were organonitrates, which appeared at m ∕ z− 147 and 226. They were formed in the aqueous phase via non-radical reactions of glyoxal and nitric acid, and their formation was enhanced by photochemistry because of the photochemical formation of nitric acid via reactions of peroxy radicals, NOx and OH during the irradiation. </P>