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Biodegradation of alkylates under less agitated aquifer conditions

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journal of Environmental Sciences 2013年第8期25卷 1529-1538页

作者： jay j. cho Makram T. Suidan Albert D. Venosa URS Corporation 7720N 16th St. Ste 100 Phoenix AZ 85020 USA Faculty of Engineering and Architecture American University of Beirut Dean's officeP.O.Box 11-0236 Riad El Solh 1107 2020 Beirut Lebanon US Environmental Protection Agency National Risk Management Research LaboratoryCincinnati OH 45268 USA

The biodegradability of three alkylates （2,3-dimethylpentane, 2,4-dimethylpentane and 2,2,4-trimethylpentane） under less agitated aquifer conditions was investigated in this study. All three alkylates biodegraded completely under these conditions regardless of the presence or absence of ethanol or benzene, toluene, ethylbenzene, and xylenes （BTEX） in the feed. In the presence of ethanol, alkylates degradation was not inhibited by ethanol. However, alkylates degraded more slowly in the presence of BTEX suggesting competitive inhibition to microbial utilization of alkylates. In the sterile controls, alkylates concentrations remained unchanged throughout the experiments.

关键词： biodegradation alkylates inhibition BTEX ethanol

EFFECTS OF Pb COMPOUND ADDITIVES ON THE PROPERTIES OF YBa_2Cu_3O_(7-δ)

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Acta Metallurgica Sinica(English Letters) 2005年第2期18卷 145-148页

作者： F.H.Li Z.G.Fan j.Wang C.S.Liu D.W.Soh Y.j.cho SchoolofMaterialandMetallurgy NortheasternUniversityShenyang110004China MyongjiUniversity Yongjin449-728SouthKorea

The melting temperature and critical transition temperature Tc of YBa2Cu3O7-δ with deferent content additives of PbO and BaPbO3 were studied. When PbO was doped in YBa2Cu3O7-δ, the melting temperature of YBa2Cu3O7-δ was reduced, however its superconductivity was weakened. From the XRD pattern of the sintered mixture of YBa2Cu3O7-δ and PbO, it was known that there was a reaction between YBa2Cu3O7-δ and PbO, and the product was BaPbO3. Hence different contents of BaPbO3 (10mass%, 20mass% and 30mass%) were added in YBa2Cu3O7-δ. It was proved that there were no reactions between YBa2Cu3O7-δ and BaPbO3. And the superconductivity of the mixtures was much better than that of the samples with PbO additive.

关键词： YBa2Cu3O7-δ PbO additive melting temperature superconductivity

Coincidence Points and Common Fixed Points for Compatible Maps of Type（A） on Saks Spaces

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journal of Mathematical Research with Applications 1995年第3期 353-361页

作者： P.P. Murthy, B.K. Shartria, Y.j. cho

ＣｏｉｎｃｉｄｅｎｃｅＰｏｉｎｔｓａｎｄＣｏｍｍｏｎＦｉｘｅｄＰｏｉｎｔｓｆｏｒＣｏｍｐａｔｉｂｌｅＭａｐｓｏｆＴｙｐｅ（Ａ）ｏｎＳａｋｓＳｐａｃｅｓＰ．Ｐ．Ｍｕｒｔｈｙ，Ｂ．Ｋ．Ｓｈａｒｔｒｉａ，Ｙ．Ｊ．ＣｈｏＣｏ... 详细信息

ＣｏｉｎｃｉｄｅｎｃｅＰｏｉｎｔｓａｎｄＣｏｍｍｏｎＦｉｘｅｄＰｏｉｎｔｓｆｏｒＣｏｍｐａｔｉｂｌｅＭａｐｓｏｆＴｙｐｅ（Ａ）ｏｎＳａｋｓＳｐａｃｅｓＰ．Ｐ．Ｍｕｒｔｈｙ，Ｂ．Ｋ．Ｓｈａｒｔｒｉａ，Ｙ．Ｊ．ＣｈｏＣｏｉｎｃｉｄｅｎｃｅＰｏｉｎｔｓａｎ...

关键词： compatible and compatible of type (A) conicidence and common fixedpoints.

Transient Hypertensive Response to CO<sub>2</sub>Aortography in a Patient with Pheochromocytoma

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Open journal of Radiology 2015年第1期5卷 1-7页

作者： Nimesh Patel Kyung j. cho University of Michigan Medical School Ann Arbor MI USA Department of Radiology Division of Vascular & Interventional Radiology University of Michigan Health System Ann Arbor MI USA

We report on a 15-year-old male with 4-year history of hypertension and retroperitoneal masses referred to Interventional Radiology to evaluate the nature of the persistent masses and renal artery stenosis. Angiographic evaluation began with CO2aortogram during which the patient had a hypertensive response with bradycardia and arrhythmia to the intra-aortic injection of CO2. His hypertension, bradycardia, and arrhythmia responded to an intravenous nitroglycerin drip without administration of alpha or beta blockers. Due to this response and neovascularity of the mass, selective venous sampling of catecholamines and renin was performed which confirmed functioning paragangliomas and hemodynamically significant stenosis of left accessory renal artery, respectively. This is the first known case of hypertensive response to CO2 aortography in a patient with unsuspected functioning paragangliomas. We propose that patients with known or suspected diagnosis of catecholamine-secreting tumors undergoing CO2 angiography should be considered for pre-procedural treatment with alpha and beta blockage or have the appropriate medication on hand with close monitoring in the event of hypertensive response.

关键词： CO2 Aortography Paraganglioma Caval Venous Sampling Renal Artery Stenosis

Splenic Arteriogastric Fistula Resulting from Adrenocortical Carcinoma: A Rare Cause of Massive Upper Gastrointestinal Hemorrhage

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Open journal of Radiology 2013年第4期3卷 165-168页

作者： Elias j. Dayoub Kyung j. cho Department of Radiology Division of Vascular & Interventional Radiology University of Michigan Health System Ann Arbor USA University of Michigan Medical School Ann Arbor USA john F. Kennedy School of Government Harvard University Cambridge USA

Splenic arteriogastric fistula is a rare cause of upper gastrointestinal (GI) hemorrhage, only reported a handful of times in the literature. Herein, we present a case of a 49-year-old woman with metastatic adrenocortical carcincoma who developed a fistula between the splenic artery and gastric lumen as a result of local invasion of her primary tumor. This fistula led to several episodes of massive upper GI bleeding. Selective splenic artery embolization was successful in ceasing the GI bleed;however, the intervention was not timely enough for the patient to survive the hemorrhage. We outline several clinical and imaging findings to assist physicians with earlier detection of splenic arteriogastric fistulas, and advocate prophylactic selective splenic artery embolization when this rare but highly fatal entity is discovered.

关键词： Splenic Artery Fistula Pseudoaneurysm Adrenocortical Carcinoma Embolization

CHARACTERISTICS OF AN EXCAVATION DAMAGED ZONE DEVELOPED AROUND KAERI UNDERGROUND RESEARCH TUNNEL Paper No.194

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CHARACTERISTICS OF AN EXCAVATION DAMAGED ZONE DEVELOPED AROU...

汽车盘制动器优化设计热和机械特性的研究(一)

ISRM-Sponsored International Symposium on Rock Mechanics:"Rock Characterisation,Modelling and Engineering Design Methods"(SINOROCK2009)

作者： S.Kwon j.S.Kim W.j.cho Korea Atomic Energy Research Institute

ISBN: (纸本)9789628014170

In Korea,a Korean reference disposal system(KRS) was developed for the permanent disposal of spent fuels in a deep geological *** order to validate the feasibility,safety,stability,and reliability of this system,an underground research tunnel, KAERI Underground Research Tunnel(KURT),was constructed as in *** is located in a mountain at the rear of the KAERI *** major rock type at the KURT site is granite,which is considered as one of the host rocks for a geological *** blasting was applied to reduce the outbreak and damaged *** diameters of the main blastholes and perimeter holes were 36mm and 17mm,*** advance rate was changed from 1.7 to 3.6m depending on the rock condition in the EDZ study *** characteristics of an EDZ around a tunnel were investigated with various laboratory as well as in situ *** this study,the influence of an EDZ on the mechanical,hydraulic,and thermal behaviors around the KURT and the conceptual repository design adapting the KRS was investigated based on three-dimensional computer simulations and the rock properties measured from the laboratory and in situ tests. (1) In situ test:A Goodman jack test showed that the deformation modules were influenced by a blasting to a depth of 0.6～2m. According to the RQDs of the rock cores from the EDZ study area,the average RQD in the 0～2m range,where the blasting impact is significant,was 67,while it was 81 at a deeper *** means the RQD was decreased by about 17%by the blasting. (2) Empirical equations:Empirical equations based on ground vibration predicted the EDZ as 0.3～2.3m. (3) Laboratory tests:From the laboratory tests,the EDZ size could be estimated to be around 0.9～*** elastic modules in the EDZ were decreased by about 56%.From a borehole radar reflection survey and a subtracting technique,it was possible to detect the new reflectors generated by a tunnel blasting. (4) Computer modeling:The influence of EDZ on mechanical

关键词： EDZ underground research tunnel MH coupling KURT blasting damage

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传动技术 2011年第2期25卷 31-37页

作者： H-j cho C-D cho Department of Mechanical Engineering Inha University

由于热量集中于制动盘的表面造成热弹不稳定性(TEI)而引起热变形。这样可能发生大家知道的低频强烈振动。因为在盘和衬块的接触面间的摩擦系数变化,在摩擦衬块发生尖叫声。通过对热聚集和尖叫现象的联合分析,对高热和机械特性可设计一... 详细信息

由于热量集中于制动盘的表面造成热弹不稳定性(TEI)而引起热变形。这样可能发生大家知道的低频强烈振动。因为在盘和衬块的接触面间的摩擦系数变化,在摩擦衬块发生尖叫声。通过对热聚集和尖叫现象的联合分析,对高热和机械特性可设计一最佳的盘和摩擦衬块。本文同时考虑了热和机械不稳定性按照盘的厚度,卡钳的加压方式,衬片弧长进行了数值和实验分析。采用有限元分析法(FEA)计算了热变形和压力分布。采用汽车底盘测功器和高速红外摄像仪进行实验评估TEI性能,结果用FEA修正。采用FEA估计机械不稳定性进行复杂固有值分析,按照转子和摩擦衬盘的形状对于一固有值问题应用修正仿真结果分析接合形式。在热聚集和尖叫问题期间,讨论因考虑盘制动器性能盘和摩擦衬块的设计。

关键词：热弹不稳定性热点强烈振动摩擦衬块发生尖叫声热不稳定性机械不稳定性复杂固有值分析

Design Development of Advanced Power Reactor 1400

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Design Development of Advanced Power Reactor 1400

第13届太平洋地区核能大会

作者： Y.S.choi S.j.cho D.W.jerng Center for Advanced Reactors Development Nuclear Environment Technology Institute Korea Hydro ＆ Nuclear Power Co. Ltd. 103-16 Munji-Dong Yuseong-Gu Daejon 305-380 Korea Center for Advanced Reactors Development Nuclear Environment Technology Institute Korea Hydro ＆ Nuclear Power Co. Ltd. 103-16 Munji-Dong Yuseong-Gu Daejon 305-380 Korea Center for Advanced Reactors Development Nuclear Environment Technology Institute Korea Hydro ＆ Nuclear Power Co. Ltd. 103-16 Munji-Dong Yuseong-Gu Daejon 305-380 Korea

＜正＞Advanced Power Reactor 1400 （APR1400） has been developed since 1992 asone of long-term national R＆D projects in Korea. APR1400 is an evolutionary typenuclear power plant of a 1400 MWe class, which upgrades the safety and economiccompetitiveness of nuclear power incorporating up-to-date advanced technologywhile stands on the proven basis of the experience from currently operating nuclearpower plants. Major advanced features were focused on the safety enhancement andthe incorporation of digital technology was made in the control room design. To verifysome of the new design features of APR1400, experimental programs were ***, the system and layout were optimized for cost reduction through the reflectionof the construction and operation experiences of currently operating plants in *** accordance with the design development, the licensing review of the standarddesign was performed and design certification was issued. The first of APR1400 is inthe construction plan to be commissioned in September 2010. The site is preparednext the Kori site, the east-south seashore of Korea, where the first nuclear powerplant in Korea was installed.

关键词： ALWR APR1400 KNGR URD

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连续铸钢结晶器与保护渣渣膜间的界面热阻

现代冶金（内蒙古） 2000年第2期 35-41,48页

作者： cho,j 兰岳光

结晶器弯月面附近凝固坯壳与结晶器间的传递在连铸产品表面裂纹的形成中起着重要作用，保护渣膜与铜结晶器壁间的界面热阻对热传递影响很大，因此，建立一个由坯壳、保护渣膜和铜壁组成的模型模拟连铸中结晶器弯月面附近的热传递。通过... 详细信息

结晶器弯月面附近凝固坯壳与结晶器间的传递在连铸产品表面裂纹的形成中起着重要作用，保护渣膜与铜结晶器壁间的界面热阻对热传递影响很大，因此，建立一个由坯壳、保护渣膜和铜壁组成的模型模拟连铸中结晶器弯月面附近的热传递。通过测量模拟器铜模内的梯度确定热阻，以前的研究认为，界面热阻与渣膜厚度无关，而经研究发现，界面热阻随潭膜厚度增加而增加，界面热阻点热传递总热阻的５０％，对于相同潭膜厚度的保护渣。

关键词：连铸保护渣膜结晶器界面热阻