http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
김용구,이상열,김한나,노학재,봉춘근,김대성,Kim, Yonggu,Lee, Sangyul,Kim, Hannah,Noh, Hakjae,Bong, Choonkeun,Kim, Daesung 한국입자에어로졸학회 2015 Particle and Aerosol Research Vol.11 No.2
The purpose of this research is to find out the collection property of nanoparticle in diffusion filter to know particle size dispersion of nanomaterial using inertial force and principle of Brownian diffusion motion. We used inertial filters which are two different type and diffusion filters made by various kinds of Wiremesh and the different pieces of filter to compare with particle size distribution using NaCl particles. Finally, We made a conclusion as follows : (1) the bigger available charging volume is and the larger specific surface area of inertial filter is, the better collection efficiency is. (2) The higher wire-mesh number of filter is, the more collection efficiency of small particle is increasing because the wire of the higher Wiremesh number filter is thinner and denser. (3) The more pieces of wire-mesh filter, the more collection efficiency is increasing because it makes the residence time longer.
A Statistical Thermodynamic Study on the Conformational Transition of Oligopeptide Multimer
김용구,박형석,Kim, Yong Gu,Park, Hyeong Seok Korean Chemical Society 1996 Bulletin of the Korean Chemical Society Vol.17 No.2
The conformational transition of oligopeptide multimer,-(HPPHPPP)n-, is studied (H:hydrophobic amino acid, P:hydrophilic amino acid). The helix/coil transitions are detected in the multimer. The transition depends on the number of amino acid in the sequence, the concentration of the oligopeptide, and temperature which affects helix stability constant (${\xi}$) and hydrophobic interaction parameter (wj). In the thermodynamic equilibrium system jA${\rightarrow}$Aj (where A stands for oligopeptide monomer), Skolnick et al., explained helix/coil transition of dimer by the matrix method using Zimm-Bragg parameters ${\xi}$ and $\sigma$ (helix initiation constant). But the matrix method do not fully explain dangling H-bond effects which are important in oligopeptide systems. In this study we propose a general theory of conformational transitions of oligopeptides in which dimer, trimer, or higher multimer coexists. The partition of trimer is derived by using zipper model which account for dangling H-bond effects. The transitions of multimers which have cross-linked S-S bonds or long chains do not occur, because they keep always helical structures. The transitions due to the concentration of the oligopeptides are steeper than those due to the chain length or temperature.
정신분열증 환자에서 혈장 HVA 및 5-HIAA 농도와 정신병리와의 상관성
김용구,박성근,김인,이민수,Kim, Yong-Ku,Park, Sung-Geun,Kim, Leen,Lee, Min-Soo 대한생물정신의학회 1997 생물정신의학 Vol.4 No.1
The recent hypothesis about the pathophysiology of schizophrenia has been centered mainly on two theories, i.e. dopamine hypothesis and serotonin hypothesis. We investigate the correlations between plasma monoamine metabolite concentrations and clinical symptoms in schizophrenic patients. The first purpose of our study was to examine whether the plasma levels of HVA(homovanillic acid) and 5-HIAA(hydroxyindoleacetic acid) are significantly different in schizophrenics, compared to normal controls. And, with the intention of clarifying the interaction between dopaminergic system and serotoninergic system, the ratio of HVA/5-HIAA also was measured. The second purpose was whether the basal(pre-treatment) levels of these metabolites show the correlation with clinical symptoms. Finally, third purpose was whether basal HVA and 5-HIAA levels can be held as a predictor of treatment response. We used Scale for the Assessment of Positive Symptoms(SAPS) and Scale for the Assessment of Negative Symptoms(SANS) as the clinical symptom rating scales. Our results were as followed, 1) only the level of basal plasma HVA was significantly differ in schizophrenics. 5-HIAA and HVA/5-HIAA were not. 2) basal HVA showed significant correlation with SAPS score, especially delusion subscale. 3) the higher was the basal HVA level, the more improvement in clinical symptoms was observed. The basal 5-HIAA level and the HVA/5-HIAA ratio did not show any significant findings. These results support the dopamine hypothesis of schizophrenia, but fail to examine on the possible involvement of serotonin in schizophrenia.
김용구,강석복,서정인 한국데이터정보과학회 2011 한국데이터정보과학회지 Vol.22 No.5
The half logistic distribution has been used intensively in reliability and survival analysis especially when the data is censored. In this paper, we provide Bayesian estimation of the shape parameter and reliability function in the generalized half logistic distribution based on progressively Type-II censored data under various loss functions. We here consider conjugate prior and noninformative prior and corresponding posterior distributions are obtained. As an illustration, we examine the validity of our estimation using real data and simulated data.
Bayesian estimations on the exponentiated half triangle distribution under Type-I hybrid censoring
김용구,강석복,서정인 한국데이터정보과학회 2011 한국데이터정보과학회지 Vol.22 No.3
The exponenetiated distribution has been used in reliability and survival analysis especially when the data is censored. In this paper, we derive Bayesian estimation of shape parameter and reliability function in the exponenetiated half triangle distribution based on Type-I hybrid censored data. Here we consider conjugate prior and nonin-formative prior and obtained corresponding posterior distributions. As an illustration, the mean square errors of the estimates are computed. Comparisons are made between these estimators using Monte Carlo simulation study.
金容九 釜山工業大學校 1963 論文集 Vol.1 No.-
大都市의 下水道 旅設은 上水道 旅設과 같이 都市計劃의 一環으로서 其水質 管理는 市民保健衛生에 重大한 要件이다. 國際港으로서의 現在130萬 人口를 가지고 增加一路에 있는 釜山市의 下水道 旅設의 現況 및 管理에 對한 硏究資料를 蒐集分析하여 外國의 旅設 및 普及狀況을 比較檢討하고 第者의 硏究한 私案을 添加한다. The sewage facilities as Well as that of waterworks as a part of city plan in the main eities and the Control of the Quality are The Vital element for the Realth of Citizens The author Rereby, in This paper is going to Collect and analyze The Research data of The conditions and manage Mant of The sewage faclities in Pusan Consisted of 1.300.000 of population as an international port, Comparing and examining with the eguipments in foreign Countries.