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The Development of Metabolic Derangement in Male Offspring after Perinatal Exposure to Di-(2-Ethylhexyl) Phthalate

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Biomedical and Environmental Sciences 2018年第7期31卷 531-534页

作者： Yun-jung Yang moon-seo park Eui-Jin Lee Yeon-pyo Hong Department of Preventive Medicine College of Medicine Chung-Ang University Institute of Biomedical Science Catholic Kwandong University International St. Mary’s Hospital Institute for Catholic Integrative Medicine Incheon St. Mary’s Hospital College of Medicine The Catholic University of Korea

The prevalence of obesity and type 2 diabetes mellitus（T2DM）has been increasing throughout the world over the past 20 *** chemicals known to regulate the endocrine system have been considered as a risk factor for th... 详细信息

关键词： PND Phthalate The Development of Metabolic Derangement in Male Offspring after Perinatal Exposure to Di Ethylhexyl

Stress-Strain Partitioning Analysis in Dual Phase Steels

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Journal of Iron and Steel Research International 2011年第S1期18卷 310-311页

作者： Eun-Joon Chun Nam-Hyun Kang Yong-Ho park Man-Been moon Department of Materials Science and Engineering Pusan National UniversityBusan 609-735South Korea Hyundai HYSCO R&D center 313Donggok-riSongsan-myeonDangjin-gunChungnam 343-831South Korea

Dual-Phase (DP) steels are made of ductile ferrite phase and hard martensite *** it became crucial in progress of automotive industry to save fuel consumption and reduce total weight of vehicles,we need more accurate estimation of distribution to mechanical properties in total amounts of *** steels have considerable difference of mechanical levels in each phase including ferrite and *** is why this study focuses on deconvolution of experimental tensile curve into ferrite and martensite using EBSD for calculation of phase volume fractions and Swift *** for certain parameter of each phase was conducted to produce the deconvolution curves.

关键词： dual phase steel Swift equation EBSD stress-strain partitioning

An Efficient Organic Additive to Control the Crystallization Rate of Aliphatic Polyketone: A Non-isothermal Crystallization Kinetics Study

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Chinese Journal of Polymer Science 2017年第4期35卷 547-557页

作者： He-xin Zhang Min-Jeong park Young-Kwon moon Eun-Bin Ko Xue-quan Zhang Keun-Byoung Yoon Department of Polymer Science and Engineering Kyungpook National University Key Laboratory of Synthetic Rubber Changchun Institute of Applied ChemistryChinese Academy of Sciences

Three types of organic compounds--two carboxylic acids and an anhydride, were used as additives for polyketone （PK）. The effect of the additive structure and their feed ratios on the melting temperature, crystallization temperature, and crystallization rate of PK were studied. We found that the crystallization temperature could be reduced significantly by introducing a small quantity of organic additive, in particular, an anhydride. On addition of 1 phr of anhydride, the crystallization temperature was reduced by 10.7 ℃. Therefore, the non-isothermal crystallization kinetics of aliphatic PKJanhydride blends with various feed ratios was investigated using DSC. The results were analyzed by various theoretical models, such as Avrami, Ozawa and combined Avrami-Ozawa models.

关键词： Polyketone Anhydride Non-isothermal Crystallization kinetics

Synthesis and microstructure of zirconia nanopowders by glycothermal processing

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中国有色金属学会会刊：英文版 2009年第B9期19卷 88-91页

作者： Jun-Seop KIM Dong-Hae LEE Sung KANG Dong-Sik BAE Hoy-Yul park moon-Kyeung NA School of Nano & Advanced Material Engineering College of EngineeringChangwon National University Advanced Materials and Application Research Laboratory Korea Electro Technology Research Institute

ZrO2 nanoparticles were prepared under high temperature and high pressure conditions by precipitation from metal nitrates with aqueous potassium hydroxide. The effects of synthesis parameters, such as the concentration of starting solution, pH of starting solution, reaction temperature and time, were discussed. The results show that the ZrO2 nanoparticles are obtained at 230-270 ℃. The average size and size distribution of the synthesized particles are below 10 nm and narrow, respectively. The XRD pattern shows that the synthesized particles are composed of crystalline. The synthesis of ZrO2 nanosized crystalline particles is possible under glycothermal conditions in ethylene glycol solution.

关键词：纳米氧化锆合成粉体加工微观结构结晶颗粒溶液pH值高压条件氢氧化钾

Enhanced third-harmonic generation by manipulating the twist angle of bilayer graphene

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Light(Science & Applications) 2021年第2期10卷 176-185页

作者： Seongju Ha Nam Hun park Hyeonkyeong Kim Jiseon Shin Jungseok Choi Sungmin park Ji-Yun moon Kwanbyung Chae Jeil Jung Jae-Hyun Lee Youngdong Yoo Ji-Yong park Kwang Jun Ahn Dong-Il Yeom Department of Energy Systems Research Ajou University206 Worldcup-roYeongtong-guSuwon 16499Republic of Korea Korea Research Institute of Standards and Science Daejeon 34113Republic of Korea Department of Physics University of Seoul163 SiripdaeroDongdaemun-guSeoul 02504Republic of Korea Department of Smart Cities University of Seoul163 SiripdaeroDongdaemun-guSeoul 02504Republic of Korea Department of Materials Science and Engineering Ajou University206 Worldcup-roYeongtong-guSuwon 16499Republic of Korea Department of Chemistry Ajou University206 Worldcup-roYeongtong-guSuwon 16499Republic of Korea Department of Physics Ajou University206 Worldcup-roYeongtong-guSuwon 16499Republic of Korea

Twisted bilayer graphene(tBLG)has received substantial attention in various research fields due to its unconventional physical properties originating from Moire *** electronic band structure in tBLG modified by interlayer interactions enables the emergence of low-energy van Hove singularities in the density of states,allowing the observation of intriguing features such as increased optical conductivity and photocurrent at visible or near-infrared ***,we show that the third-order optical nonlinearity can be considerably modified depending on the stacking angle in *** third-harmonic generation(THG)efficiency is found to significantly increase when the energy gap at the van Hove singularity matches the three-photon resonance of incident *** study on electrically tuneable optical nonlinearity reveals that the gate-controlled THG enhancement varies with the twist angle in tBLG,resulting in a THG enhanced up to 60 times compared to neutral monolayer *** results prove that the twist angle opens up a new way to control and increase the optical *** tBLG,,suggesting rotation-induced tuneable nonlinear optics in stacked two-dimensional material systems.

关键词： twist angle harmonic

Changes in spatial variations of sap flow in Korean pine trees due to environmental factors and their effects on estimates of stand transpiration

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Journal of Mountain Science 2016年第6期13卷 1024-1034页

作者： Minkyu moon Taek-yu KIM Juhan park Sungsik CHO Daun RYU Sanguk SUH Hyun Seok KIM National Center for Agro Meteorology 1 Gwanak-roGwanak-guSeou1151-744Republic of Korea National Institute of Environmental Research 42 Hwangyong-roSeo-guIncheon 404-780Republic of Korea Department of Forest Sciences Seoul National UniversityI Gwanak-roGwanak-guSeou1151-921Republic of Korea National Academy of Agricultural Science 166 Nongsaengmyeong-roWanju-gun 565-851Republic of Korea Research Institute for Agriculture and Life Sciences 1 Gwanak-roGwanak-guSeou1151-921Republic of Korea

It is difficult to scale up measurements of the sap flux density(J_S) for the characterization of tree or stand transpiration(E) due to spatial variations in J_S and their temporal *** assess spatial variations in the sap flux density of Korean pine(Pinus koraiensis) and their effects on E estimates,we measured the J_S using Granier-type *** trees,the J_S decreased exponentially with the radial depth,and the J_S of the east aspects were higher than those of the west *** trees,there was a positive relationship between J_S and the tree diameter at breast height,and this positive relationship became stronger as the transpiration demand *** spatial variations that caused large errors in E estimates(i.e.,up to 110.8 % when radial variation was ignored) had varied systematically with environmental factors systematic characteristics in relation to environmental ***,changes in these variations did not generate substantial errors in the E *** our study periods,the differences in the daily E(E_D) calculated by ignoring radial,azimuthal and tree-to-tree variations and the measured E_D were fairly constant,especially when the daily vapor pressure deficit(D_D)was higher than 0.6 k *** results imply that the effect of spatial variations changes on sap flow can be a minor source of error compared with spatial variations(radial,azimuthal and tree-to-tree variations) when considering E estimates.

关键词： Sap flow Environmental factors Pinuskoraiensis Scale-up Stand transpiration

Rapid manufacturing of SiC molds with micro-sized holes using abrasive water jet

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中国有色金属学会会刊：英文版 2009年第B9期19卷 178-182页

作者： Bo-Sung SHIN Kang-Su park Yeon-Kyoung BAHK Sun-Ki park Jung-Han LEE Jeung-Sang GO Myung-Chang KANG Chae-moon LEE ERC/NSDM Pusan National University School of Mechanical Engineering Pusan National University Microhole Company NCRC Pusan National University Samsung Electro-Mechanics

Silicon carbide (SiC) is highly wear resistant with good mechanical properties, including high temperature strength, excellent chemical resistance, and high thermal conductivity and thermal shock resistance. SiC molds, which can be produced with diverse microstructural features, are now widely used in glass molding owing to their excellent characteristics, and also have potential applicability in IT industries. SiC molds are traditionally fabricated by silicon micromachining or dicing. The fabrication cost of silicon micromachining is very high, however, because several expensive masks are needed. Furthermore, the fabrication time is very long. Meanwhile, it is difficult to make micro-patterned molds with arbitrary shapes using dicing saws. Abrasive water jet (AWJ) is widely applied to cut and drill very brittle, soft and fibrous materials. It offers high energy density, the absence of a heat affected zone(HAZ), high performance, and an environment friendly process. In spite of these advantages, micro-hole drilling via conventional AWJ processing suffers from notable shortcomings. We proposed a new abrasive supplying method of AWJ. The proposed method reduces frosting phenomena, and provides micro-machining of AWJ. The characteristics of a hole machined was investigated by the proposed AWJ process according to the ratio of water and abrasives. With the optimal experimental conditions, 3×3 array SiC molds with the diameter of 700 μm and depth of 900 μm were successfully manufactured.

关键词：快速模具制造磨料水射流碳化硅微型硅微加工型孔最佳实验条件机械性能

Shear Behavior in Indented Concrete Layers with Different Strengths

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Engineering（科研） 2016年第7期8卷 423-431页

作者： Jae-Yoon Kang jong-Sup park Woo-Tai Jung moon-Seoung Keum Structural Engineering Research Institute Korea Institute of Civil Engineering and Building Technology Goyang Republic of Korea

This paper investigates the design formula for the shear strength at the concrete-to-concrete interface proposed in Eurocode with regard to concrete layers with different strengths. Based upon the results of the study on the applicability of the design formula, push-off test is conducted on specimens with various indented interfaces to evaluate the actual behavior with respect to the surface roughness. The experimental results reveal that the interfacial shear strength increases with higher compressive strength of the concrete layers presenting different strengths and that the shear strength at the indented interface differs by 20% to 50% compared to the value predicted by the design formula. Especially, the shear strength developed between the concrete layers with different strengths appears to be different from the prediction of the design formula as much as the layers present larger difference in their compressive strengths.

关键词： Shear Strength Interface of Concrete Layers Surface Roughness Indented Surface Push-Off Test

Distant skeletal muscle metastasis from intrahepatic cholangiocarcinoma presenting as Budd-Chiari syndrome

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World Journal of Gastroenterology 2007年第22期13卷 3141-3143页

作者： Oh Sung Kwon Dae Won Jun Sang Heum Kim Mee Yeon Chung Nam In Kim moon Hee Song Han Hyo Lee Seung Hwan Kim Yoon Ju Jo Young Sook park jong Eun Joo Department of Internal Medicine Eulji University Hospital Seoul Korea Department of Radiology Eulji University Hospital Seoul Korea Department of Pathology Eulji University Hospital Seoul Korea

Intrahepatic cholangiocarcinoma is a malignant neoplasm arising from the biliary epithelium, which frequently invades adjacent organs or metastasizes to other visceral organs such as the lungs, bones, adrenals, and brain. However, distant skeletal muscle metastasis of cholangiocarcinoma has never been described before to the best of our knowledge and, furthermore, Budd-Chiari syndrome secondary to intrahepatic cholangiocarcinoma is also extremely rare. Here we present the first case overall of distant muscle metastasis from intrahepatic cholangiocarcinoma presenting as Budd-Chiari syndrome. A 44-year-old man admitted to the hospital with complaints of abdominal distension, edema of both legs, back pain and anorexia of 30 d' duration. Computed tomography and ultrasonography-guided percutaneous muscle biopsy established intrahepatic cholangiocarcinoma with disseminated thrombosis from inferior vena cava to bilateral iliac and femoral veins, and multiple skeletal muscle metastases in bilateral buttock and erector spinal muscle.

关键词： Intrahepatic Cholangiocarcinoma Metastasis Skeletal muscle Budd-Chiari syndrome