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发自左冠状窦的右冠状动脉起源变异:亚型及临床重要性分析

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国际医学放射学杂志 2012年第2期 166-166页

作者： H.j.Lee Y.j.Hong H.Y.Kim j.Lee j.hur B.W.Choi 颜荣华 Department of Radiology Research Institute of Radiological ScienceSeverance HospitalYonsei University Health System250 SeongsannoSeodaemun-guSeoul 120-752Korea

目的根据起源于左冠状窦的右冠状动脉(AORL)走行分为两种亚型,分析每种亚型的临床重要性。材料与方法本研究为回顾性研究,已通过机构伦理审查委员会审查,

关键词：右冠状动脉心绞痛冠心病亚型冠状窦

联合使用自动管电压及管电流调制和迭代重建技术的冠状动脉CTA

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国际医学放射学杂志 2014年第1期 74-74页

作者： Y.j.Suh Y.j.Kim S.R.Hong Y.j.Hong H.j.Lee j.hur 刘玉博 Department of Radiology Research Institute of Radiological Science Severance Hospital Yonsei University College of Medicine 50 Yonsei-ro Seodaemun-gu Seoul 120-752 Korea

目的探讨自动管电压选择与管电流调制(APSCM)以及迭代重建,与仅采用PASM及体质量指数(BMI)的检查程序比较,对CTA影像质量、诊断准确度及辐射剂量的

关键词： CTA 迭代重建影像质量电流调制冠状动脉

脑卒中病人的左房耳血栓:对照心脏双期CT血管成像与经食管超声心动检查对血栓的检出

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国际医学放射学杂志 2009年第4期32卷 389-389页

作者： j.hur Y.j.Kim H.j.Lee j. W.Ha j.H.Heo E.Y.Choi 何珍（译）万业达（校） Department of Radiology Research Institute of Radiologi- cal Science Yonsei University College of Medicine 250 SeongsannoSeodaemun-gu Seoul 120-752 South Korea. 不详

目的评价脑卒中病人64层心脏双期CT血管成像对检出左房耳血栓的诊断准确性，并评价血栓与循环淤滞之间的差别，以经食管超声心动检查（TEE）作为参照标准。方法本研究经伦理委员会批准同意，且所有病人均签署知情同意书。55例连续近期... 详细信息

目的评价脑卒中病人64层心脏双期CT血管成像对检出左房耳血栓的诊断准确性，并评价血栓与循环淤滞之间的差别，以经食管超声心动检查（TEE）作为参照标准。方法本研究经伦理委员会批准同意，且所有病人均签署知情同意书。55例连续近期发生脑卒中的病人（男性36例，女性19例，平均年龄61岁）存在血栓形成的高危因素，进行了64层心脏双期CT血管成像和TEE，2种检查间隔在5天内。采用κ检验评价CT与TEE在检出血栓方面的一致性。为了定量分析，

关键词： CT血管成像经食管超声心动血栓形成卒中病人心脏左房超声心动检查知情同意书

Formation of CoAl layered double hydroxide on the boehmite surface and its role in tungstate sorption

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journal of Environmental Sciences 2018年第3期30卷 103-115页

作者： Hyuck hur Richard j.Reeder Department of Chemistry Stony Brook University Stony Brook NY 11794 USA Department of Geosciences Stony Brook University Stony Brook NY 11794 USA

Sorption of tungstate on boehmite（γ-Al OOH）is increased by co-sorption with Co^（2＋）over the near-neutral p H *** uptake experiments show up to a 3-fold increase in tungstate uptake over the range WO4^（2-）=50–1000μmol/L compared to boehmite not treated with Co^（2＋）.Desorption experiments reveal a corresponding decrease in sorption reversibility for tungstate co-sorbed with Co^（2＋）.Reaction of boehmite with Co^（2＋）results in the formation of Co Al layered double hydroxide（LDH）,as confirmed by X-ray diffraction and X-ray absorption *** L3-edge X-ray absorption near edge structure（XANES）reveals that W（VI）is octahedrally coordinated in all sorption samples,with polymeric tungstate species forming at higher tungstate concentrations.X-ray diffraction and X-ray absorption spectroscopy indicate that the mechanism for enhancement of tungstate uptake is the formation of surface complexes on boehmite at low tungstate concentrations,while exchange into the Co Al LDH becomes important at higher tungstate *** results provide a basis for developing strategies to enhance tungstate sorption and to limit its environmental mobility at near-neutral pH conditions.

关键词： Tungsten Tungstate Cobalt Boehmite (AIOOH) Layered double hydroxide Adsorption

Mg Alloy Foam Fabrication via Melt Foaming Method

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journal of Materials Science & Technology 2008年第3期24卷 302-304页

作者： Changhwan SEO Bo-Young hur i-Cube Center ERISchool of Nano & Advanced Materials EngineeringGyeongsang National University

For the first time AZ91 （MgAl9Zn1） and AM60 （MgAl6） Mg alloy foams with homogeneous pore structures were prepared successfully via melt foaming method using CaCO3 as blowing agent. It is revealed that the blowing gas to foam the melt is not CO2 but CO, which comes from liquid-solid reaction between Mg melt. The reaction temperature is more than 100℃ lower than CaCO3 decomposition, which makes Mg alloy melts foam into cellular structure much more easily in the temperature range from 690℃ to 750℃.

关键词： Mg alloy foam CaCO3 Blowing gas

Importance of nutrient availability for soluble microbial products formation during a famine period of activated sludge:Evidence from multiple analyses

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journal of Environmental Sciences 2019年第10期31卷 112-121页

作者： Tahir Maqbool jinwoo Cho jin hur Department of Environment and Energy Sejong University

Much remains unknown about compositional variations in soluble microbial products(SMP)with the shift of the substrate condition from a feast to a famine phase in biological treatment *** study demonstrated that the formation of SMP could be suppressed by up to 75%during the famine phase with the addition of essential *** contrast,presence of electron acceptor did not play any significant role during the stress condition,showing the similar amounts of SMP(r=0.98,p0.95).The fluorescence excitation-emission matrix coupled with parallel factor analysis(EEM-PARAFAC)revealed the presence of four different fluorescent components,including two protein-like(C1 and C4),fulvic-like(C2),and humic-like(C3)components,in the SMP and bEPS formed at different *** C1 and C4 showed increasing trends(R^2>0.95)with the length of starvation in the bioreactors without essential *** availability was found to be a key factor to quench the production of large-sized *** study provides a wealth of information on operation conditions of activated sludge treatment systems to minimize large sized SMP molecules(particularly proteins),which typically exert many environmental concerns to effluent organic matter quality.

关键词： Soluble microbial products Nutrient availability EEM-PARAFAC SEC-OCD-OND Famine phase

Enhancing the total organic carbon measurement efficiency for water samples containing suspended solids using alkaline and ultrasonic pretreatment methods

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journal of Environmental Sciences 2020年第4期32卷 20-28页

作者： Han-Saem Lee jin hur Hyun-Sang Shin Department of Environment Energy Engineering Seoul National University of Science&TechnologySeoul01811South Korea Department of Environment&Energy Sejong UniversitySeoul05006South Korea

In this study,we investigated the effect of sample pretreatments(ultrasonication and alkaline extraction)on total organic carbon(TOC)measurements for water samples containing suspended solids(SS)of four different origins(algae,soil,sewage sludge,and leaf litter)to more clearly assess the impact of particulate organic carbon(POC)in *** effects each of ultrasonication(power,pulse,etc.)and alkaline extraction condition(concentration,time,etc.)on the TOC recovery and precision were investigated,and the results were compared with those of a new sample pre treatment method combining both *** treatment(0.01 mol/L NaOH)showed higher precision than ultrasonication(100/5 on/off pulse),and notably,the differences among the measured TOC values in samples of different origins were also further reduced in the alkaline *** suggests that the ultrasonic pretreatment results can be mainly attributed to the increase in POC recovery through particle size reduction,whereas the alkaline treatment results are achieved through the enhancement of POC *** is also particularly noteworthy that a higher TOC recovery of 87.6%±7.4%with a higher precision of 8.4%could be obtained using the combined method,compared to each treatment(ultrasonic:TOC recovery 34.7%,relative standard deviation 63.1%;alkaline:49.6%and 23.0%,respectively).Thus,simultaneous pretreatment with ultrasonication and alkaline extraction is expected to increase the oxidation rate of organic matter and the homogeneity of the samples,minimizing the loss of POC measurement values,and thereby improving the reliability of the TOC measurements of water samples containing SS.

关键词： Total organic carbon Suspended solids Pretreatment Ultrasonication Alkaline extraction

Assessing microbial and chemical exposure risks of Giardia in indoor swimming pool water disinfected by chlorine

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journal of Environmental Sciences 2022年第7期34卷 276-284页

作者： Chenyue Yin Bingjun Liu Kyu hur Shengkun Dong Guangdong Engineering Technology Research Center of Water Security Regulation and Control for Southern China Guangzhou 510275China Southern Laboratory of Ocean Science and Engineering School of Civil EngineeringSun Yat-Sen UniversityZhuhai 519000China 3-10 Shinohara Nishicho Kohoku WardYokohamaKanagawa 222-0025Japan

Swimming pools adopt chlorination to ensure microbial safety. Giardia has attracted attention in swimming pool water because of its occurrence, pathogenicity, and chlorine resistance. To control Giardia concentrations in pool water and reduce the microbial risk, higher chlorine doses are required during disinfection. Unfortunately, this process produces carcinogenic disinfection byproducts that increase the risk of chemical exposure. Therefore, quantitatively evaluating the comparative microbial vs. chemical exposure risks that stem from chlorination inactivation of Giardia in swimming pool water is an issue that demands attention. We simulated an indoor swimming pool disinfection scenario that followed common real-world disinfection practices. A quantitative microbial risk assessment coupled with a chemical exposure risk assessment was employed to compare the Giardia microbial exposure risk(MER) and the trihalomethane chemical exposure risk(CER) to humans. The results demonstrated a 22% decrease in MER-and CER-induced health exposure risk, from 8.45E-5 at 8:00 to 6.60E-5 at 19:00. Both the MER and CER decreased gradually, dropping to 3.26E-5 and 3.35E-5 at 19:00, respectively. However, the CER exceeded the MER after 18:30 and became the dominant factor affecting the total exposure risk. Past the 18 hr mark, the contribution of trihalomethane CER far exceeded the risk aversion from microbial inactivation, leading to a net increase in total exposure risk despite the declining MER. Swimmers may consider swimming after 19:00, when the total exposure risk is the lowest. Lowering water temperature and/or p H were identified as the most sensitive factors to minimize the overall health exposure risk.

关键词： Microbial risk Chemical risk Giardia Swimming pool Disinfection

A Fuzzy Shape Control Method for Stainless Steel Strip on Sendzimir Rolling Mill

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journal of Iron and Steel Research International 2011年第3期18卷 17-23页

作者： hur Yone-gi CHOI Young-kiu Technical Research Laboratories POSCO School of Electrical Engineering Pusan National University

The strip shape in the stainless steel process has made an issue of the strip *** objective of the shape control is to minimize the shape deviation and to maintain symmetrical shape patterns in the lateral *** method of the shape recognition employs the least square *** shape deviation is controlled by the fuzzy shape controller（FSC）.The experiments have been performed online for various stainless materials,thicknesses,and strip *** test results show very efficient performances in respect of stable target tracking and symmetrical and minimal fluctuation of the strip shape.

关键词： shape control fuzzy control stainless steel Sendzimir mill