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Suction Performance and Internal Flow of a 2-Bladed Helical Inducer with Inlet Asymmetric Plate

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journal of Thermal Science 2013年第5期22卷 395-403页

作者： S.Watanabe Y.Uchinono K.Ishizaka A.Furukawa j.-H.kim Department of Mechanical Engineering Kyushu University744 Motooka Nishi-ku Fukuoka 819-0395 Japan Graduate School of Engineering Kyushu University744 Motooka Nishi-ku Fukuoka 819-0395 Japan Oita National College of Technology Hyosung Goodsprings Co. Ltd.Korea

It has been found in our past studies that the installation of asymmetric plate at the inlet of inducer is effective for the suppression of cavitation surge *** the present study,the suction performance of 2-bladed helical inducer with an inlet asymmetric plate is experimentally *** is observed that the suction performance in large flow rate conditions is not significantly influenced by the asymmetric plate,whereas the head of inducer with the asymmetric plate increases just before the head breakdown in partial flow *** understand the mechanism of this additional head,the flow measurements and the numerical simulations are carried *** is found that the circumferential component of absolute velocity at the exit of inducer slightly increases with the development of cavitation in both cases with and without the inlet asymmetric plate,indicating the increase of the theoretical *** theoretical head increase with the inlet asymmetric plate is also confirmed by the unsteady numerical simulations,suggesting that the additional head is achieved through the increase of the theoretical head with the change of the exiting flow from the inducer associated with some amount of cavitation.

关键词： Inducer Cavitation Suction performance Internal flow Inlet asymmetric plate

Thermodynamic description of the ternary compounds in the Cu-In-Se system

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Rare Metals 2006年第5期25卷 481-487页

作者： SHEN jianyun W.K. kim SHANG Shunli CHU Maoyou CAO Song T.j. Anderson Department of Chemical Engineering University of Florida Gainesville FL 32611 USA General Research Institute for Non-ferrous Metals of Beijing 100088 Beijing China

A set of thermodynamic descriptions of the temary compounds （mainly α-CulnSe2, δ-CulnSe2, Culn3Se5 and CulnsSe8） in the Cu-In-Se system was established by adopting sub-lattice model. The model parameters are carefully evaluated by integrating the experimental data of thermodynamic properties, phase equilibrium and theoretical calculation of formation energies of different point defects. The evaluated Gibbs energies of the compounds reasonably agree with that estimated from EMF experiment and ab initio calculation. The calculated phase relationships in the Cu-In-Se system are in accord with the experimental phase diagrams. The obtained standard enthalpy of formation of CulnSe2 is close to that reported in the literatures.

关键词： Cu-In-Se system thermodynamics Gibbs energy defect compound

Nanotube-Based Chemical and Biomolecular Sensors

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journal of Materials Science & Technology 2008年第4期24卷 578-588页

作者： j.Koh B.kim S.Hong H.Lim H.C.Choi Department of Physics and Astronomy Seoul National University Shillim-Dong Kwanak-Gu Seoul 151-747 Korea Department of Chemistry Pohang University of Science and Technology San 31 Hyoja-Dong Nam-Gu Pohang 790-784 Korea

We present a brief review about recent results regarding carbon nanotube （CNT）-based chemical and biomolecular sensors. For the fabrication of CNT-based sensors, devices containing CNT channels between two metal electrodes are first fabricated usually via chemical vapor deposition （CVD） process or ＂surface programmed assembly＂ method. Then, the CNT surfaces are often functionalized to enhance the selectivity of the sensors. Using this process, highly-sensitive CNT-based sensors can be fabricated for the selective detection of various chemical and biological molecules such as hydrogen, ammonia, carbon monoxide, chlorine gas, DNA, glucose, alcohol, and proteins.

关键词： Chemical vapour deposition Carbon nanotubes Sensors Biological molecules Surface programmed assembly

Carbonaceous aerosol in ambient air: Parallel measurements between water cyclone and carbon analyzer

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Particuology 2019年第3期17卷 153-158页

作者： Min-Suk Bae james j. Schwab Da-jeong Park Zang-Ho Shon Ki-Hyun kim Department of Environmental Engineering Mokpo National University Muan South Korea Atmospheric Sciences Research Center University at Albany State University of New York 251 Fuller Road Albany NY 12203 USA Environmental Analysis Center Gwangju Institute of Science and Technology Gwangju South Korea Department of Environmental Engineering Dong-Eui University Busan South Korea Department of Civil and Environmental Engineering Hanyang University Seoul South Korea

A water cyclone,developed to collect and preserve biological aerosols in a small liquid flow,was interfaced with a total organic carbon analyzer to measure the aerosol organic and inorganic carbon *** total carbon was compared against parallel measurements of elemental carbon (EC) and organic carbon (OC) using a Sunset Real Time ECOC Analyzer between 12-29 january 2009.A National Institute for Occupational Safety and Health (NIOSH) like protocol for the measurements included four temperature steps ending at 840 ℃ for OC under a helium atmosphere followed by two temperature steps ramped to 850 ℃ for EC in a helium-oxygen atmosphere,Carbon data comparison between the water cyclone-TOC and the TOC measured by the analyzer indicated good agreement (r2 =0.82,linear regression slope =0.98,p < 0.001).Analyses of the relationship between total water organic carbon and OC,investigated using data sets from case studies spanning two different events,suggested it was possible to distinguish between the primary and secondary sources.

关键词： Water soluble organic carbon Total organic carbon Carbonaceous material

可生物复原性多聚体靶向MMP-9递送siRNA:抑制大鼠尿道模型内裸金属内支架置入后肉芽组织形成

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国际医学放射学杂志 2014年第3期 282-283页

作者： j.H.Park j.H.kim E.Y.kim j.kim H.Y.Song W.j.kim 唐光健 Department of Radiology and Research Institute of Radiology University of Ulsan College of MedicineAsan Medical CenterAsanbyeongwon-gil388-1 Pungnap-dongSongpa-guSeoul 138-736Korea

摘要目的评价靶向基质金属蛋白酶9(MMP-9)的小干扰RNA(siRNA)对大鼠尿道模型内置入裸金属内支架后肉芽组织形成的抑制作用。方法所有实验均由动物实验委

关键词：肉芽组织结缔组织 siRNA 大鼠 MMP-9 尿道泌尿生殖系统支架置入靶向金属金属材料

Enzymatic oxidation of aqueous pentachlorophenol

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journal of Environmental Sciences 2007年第9期19卷 1032-1036页

作者： E. Y. kim H. j. Chae K. H. Chu Department of Chemical Engineering The University of Seoul Seoul 130-743 Korea. Departments of Food and Biotechnology and Innovative Industrial Technology Hoseo University Asan 336-795 Korea Honeywell Process Solutions 17 Changi Business Park Central 1 Singapore 486073

The influence of the nonionic surfactant Tween 80 on pentachlorophenol （PCP） oxidation catalyzed by horseradish peroxidase was studied. The surfactant was tested at concentrations below and above its critical micelle concentration （CMC）. Enhancement of PCP removal was observed at sub-CMCs. The presence of Tween 80 in the reaction mixture reduced enzyme inactivation which occurred through a combination of free radical attack and sorption by precipitated products. A simple first-order model was able to simulate time profiles for enzyme inactivation in the presence or absence of Tween 80. At supra-CMCs, the surfactant caused noticeable reductions in PCP removal, presumably through micelle partitioning of PCP which precluded the hydrophobic PCP molecule from interacting with the enzyme.

关键词： biocatalysis horseradish peroxidase pentachlorophenol surfactant

肝移植术后原发性移植肝无功能的CT影像特点

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国际医学放射学杂志 2017年第1期 84-85页

作者： j.S.kim j.H.Kwon K.W.kim j.kim S.Y.kim W.K.jeong 黄黎香 Department of Radiology Division of Liver Transplantationand Hepatobiliary Surgery University of Ulsan College of Medicine

摘要目的明确肝移植术后出现原发性移植肝无功能(PNF)的CT的影像特点,并将其和早期原发移植肝功能衰竭或已确定病因的死亡病例的CT影像特点进行比较。材料

关键词：移植肝 PNF 肝移植术后影像特点无功能原发性 CT

Can an Invasive Prey Species Induce Morphological and Behavioral Changes in an Endemic Predator? Evidence from a South Korean Snake(Oocatochus rufodorsatus)

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Asian Herpetological Research 2014年第4期5卷 245-254页

作者： jun-Haeng HEO Heon-joo LEE Il-Hun kim jonathan j.FONG ja-Kyeong kim Sumin jEONG Daesik PARK Department of Biology Kangwon National University Division of Science Education Kangwon National University

Introduction of an invasive prey species into an ecosystem may affect an endemic predator＇s fitness by altering the prey-predator system. Successful adaptation may allow the endemic predator to eat and control the invasive species, while unsuccessful adaptation may result in extinction of the predator. We examine the possible effects of the invasive North American bullfrog （Rana [Lithobates] catesbeiana） on the endemic Red-backed rat snake （Oocatochus rufodorsatus） in South Korea. We do so by comparing the morphology and behavior of adult and hatchling snakes from bullfrog-exposed （Taean） and bullfrog-unexposed （Hongcheon） populations. Among the seven morphological characteristics investigated, relative tail length （tail length/snout-vent length） of both adults and hatchlings from Taean was significantly greater than that of adults and hatchlings from Hongcheon. Also, adult snakes from Taean had a signiifcantly shorter latency of ifrst tongue lfick in response to prey compared to adults from Hongcheon. This difference was not observed in hatchlings. In other snake species, a longer relative tail length and shorter latency of ifrst tongue lfick are known to improve foraging efifciency, and these characters may be adaptations ofO. rufodorsatus to prey on bullfrogs. This study provides preliminary evidence that the presence of an invasive prey species may cause morphological and behavioral changes in an endemic predator.

关键词： invasive prey bullfrog Rana catesbeiana Oocatochus rufodorsatus predator response

Study on the Missing Data Mechanisms and Imputation Methods

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