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REcENT PROGRESS IN INcOMPRESSIBLE REyNOLDSAVERAGED NAVIER-STOKES SOLVERS

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Journal of Hydrodynamics 1996年第1期8卷 13-30页

作者： c. H. Sung T. T. Huang(David Taylor Model Basin,cD/NSwc Bethesda, MD 20084- 5000,USA) David Taylor Model Basin Bethesda United States

A new numerical approach based on a multiblock, multigrid, local refinement method has been developed. The multiblock structure makes grid generation for complex geometries easier,multigrid techniques significantly accelerate the rate of convergence and the local refinement method provides high spatial resolution of boundary lay6r and separated vortical flows with much reduced computer memory and cPU time. Sample three-dimensional flow computations for complex geometries are presented to illustrate the advantages in term of memory savings and reductions of cPU time in obtaining high spatial resolution solutions. High spatial resolution in the inner viscous layer is achieved by using the values of y+ for the first grid centers rom the wall in the order of 1 to 7. The required solution resolution in the dominantly viscous flow region (boundary layer, vortex core, or three-dimensional separated zone) dictates the acceptable spacing of grid cells in that region. It is very desirable to be able to reduce grid spacing locally in the critical region without changing the overall grid. The local refinement technique doubles grid numbers in all three directions for every level of refinement. Multiple levels of local grid refinement with moderate grid stretching can be used to provide fine grid spacing in rapidly changing flow regions such as near the wall, vortex core and separated shear layer. Thus, the method provides the required fine spatial resolution in the dominantly viscous region which is relatively small compared to the entire computational domain. This also avoids the used of excessively large aspect ratios of the grid cells near the rapidly changing now regions thus reduces truncation error and improves robustness. Furthermore, the results of numerical experimentation indicate that the present multigrid local refinement technique provides very effective numerical communications across the fine and coarse grid interfaces because the finer mesh is embedde

关键词： ultiblock multigrid local refinement

Efficacy of Oral Antigen Specific Immunotherapy on Desensitization of Some Autoimmune Diseases Associated with Milk Allergy

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Food and Nutrition Sciences 2013年第8期4卷 799-806页

作者： Azza A. Atef Mohamed y. Attia Osama E. Abdel Aal Allergy & Immunology Unit Ain Shams University Hospitals Cairo Egypt. Biochemistry Department Faculty of Science Ain Shams University Cairo Egypt

There are several reports on the prevalence and importance of milk allergens in the induction of allergic diseases, whereas its role in the induction of autoimmune disease was rarely studied. So, the present work aimed to study the diagnosis and the efficacy of oral antigen specific immunotherapy (OAIT) on two groups of autoimmune disease patients namely, rheumatic arthritis (RA), group II, and systemic lupus erythematosus (SLE), group III, who has allergens for milk as an effective treatment option. From the assessment of the data obtained and the clinical outcome of RA and SLE patients after food elimination strategy and milk immunotherapy, it was evident that there were significant reductions (P cific IgE, Rheumatic factor (R.F), c-reactive protein (c.R.P), Anti-nuclear antibodies (ANA) and anti-double stranded DNA antibodies (Anti-ds DNA) compared to pretreated levels. Moreover, the immunotherapy induced “blocking antibodies” by remarkable highly significant increasing in IgG, phagocytic inhibition test (PIT %), complement component 3(c3), and complement component 4 (c4) levels. More improvement was noticed in the SLE as a result of the immunotherapy. conclusion: milk desensitization is a gained interest and a safe valuable effective treatment of autoimmune conditions in Egypt.

关键词： Immunotherapy Milk Allergy Autoimmune Diseases

Hepatocellular carcinoma in Micronesians, a Growing Pacific Islander Population in the U.S.

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Open Journal of Gastroenterology 2018年第6期8卷 223-233页

作者： Eric M. wu Brenda y. Hernandez Linda L. wong Department of Surgery University of Hawaii John A. Burns School of Medicine Honolulu USA cancer center University of Hawaii Honolulu USA

Background: Micronesians are a rapidly growing population in Hawaii and the continental U.S. Hepatitis B is prevalent in Micronesia, but the consequences in those migrating to the U.S. are unclear. This study characterizes hepatocellular carcinoma in Micronesians with comparisons to other Pacific Islanders. Methods: A retrospective evaluation was undertaken of 40 Micronesian and 142 Non-Micronesian Pacific hepatocellular carcinoma patients diagnosed in a large clinical practice in Hawaii from 1993-2017. Results: All Micronesians were born outside of the U.S. Micronesians were younger at diagnosis (52.0 vs. 60.2 years), had higher rates of hepatitis B (80% vs. 31.2%), a family history of hepatocellular carcinoma (17.5% vs. 4.4%) and more tumors cm (64.1% vs. 45.2%). Non Micronesian Pacific Islanders had higher rates of Hepatitis c (48.6% vs. 22.5%) and hypertension (61.7% vs. 32.4%). There was no difference in the proportions of screen-detected tumors, those meeting Milan criteria, tumor stage, or liver function. Micronesians had better 5-year survival rates (48% vs. 16.7%). conclusion: Hepatocellular carcinoma in Micronesians is primarily Hepatitis B-related. Micronesians were equally likely to have hepatocellular carcinoma found with screening, undergo transplant and had better survival. Our study emphasizes the need for hepatitis B screening and hepatocellular carcinoma surveillance in Micronesians.

关键词： Hepatocellular carcinoma Micronesians Hepatitis B Screening

热膨胀性能对炭/炭复合材料在制动摩擦过程中热应力场的影响

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中国有色金属学报 2011年第5期21卷 1031-1037页

作者：郭瑞徐惠娟易茂中雷宝灵中南大学粉末冶金国家重点实验室长沙410083

测量以纯树脂炭、粗糙层热解炭和光滑层热解炭为基体的3种炭/炭复合材料的热膨胀系数,并采用有限元分析软件,模拟这3种炭/炭复合材料在飞机正常着陆能量条件下的热应力场,研究热膨胀系数对炭/炭复合材料热应力场及其摩擦性能的影响。结... 详细信息

测量以纯树脂炭、粗糙层热解炭和光滑层热解炭为基体的3种炭/炭复合材料的热膨胀系数,并采用有限元分析软件,模拟这3种炭/炭复合材料在飞机正常着陆能量条件下的热应力场,研究热膨胀系数对炭/炭复合材料热应力场及其摩擦性能的影响。结果表明:3种炭/炭复合材料在z方向上的热膨胀系数大于在x和y方向的,且热膨胀系数均随着温度的升高而逐渐增大,其中,基体为粗糙层热解炭的炭/炭复合材料的热膨胀系数最小,纯树脂炭试样的次之,光滑层热解炭试样的最大;在制动过程中,炭/炭复合材料摩擦表面产生的热应力与材料的热膨胀系数相关,材料的热膨胀系数越大,产生的热应力越大;过大的热应力使纯树脂炭试样具有相对稳定的摩擦曲线,在较大热应力的作用下,光滑层热解炭试样的摩擦曲线不稳定,影响其摩擦性能。

关键词：炭/炭复合材料热膨胀系数热应力场摩擦性能

在硅的无坩堝区域提純过程中关于利用湿氢除硼的几个問题

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天津大学学报 1964年第2期 71-76页

作者：郭维廉郑云光何世存邵景倫天津大学无线电材料与元件教研室天津大学 63年无綫电材料与元件专业毕业生

本文讨论了在湿氢条件下,进行硅的无坩堝区域提纯时,所遇到的几个问题。主要包括:氢气实际露点和氢气流量的关系;控制湿氢中水汽量的方法;最佳水汽量的选择和最佳湿氢提纯效率等问题。

关键词：水汽分压硼效率加水器注水器除硼

Textural and geochemical characteristics of late Pleistocene to Holocene fine-grained deep-sea sediment cores(GM6 and GM7),recovered from southwestern Gulf of Mexico

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Journal of Palaeogeography 2018年第3期7卷 253-271页

作者： Abigail Anaya-Gregorio John S.Armstrong-Altrin Marfa Luisa Machain-castillo Patricia c.Montiel-Garcia Mayla A.Ramos-Vazquez Licenciatura en Ingenieria en Geologia Ambiental Area Academica de Ciencias de la Tierra y MaterialesUniversidad Autonoma del Estado de HidalgoMineral de la ReformaHidalgoMexico. Instituto de ciencias del Mary Limnologia Universidad Nacional Autenoma de MexicoUnidad de Procesos Oceanicos y CosterosCiudad Universitaria04510 Ciudad de MexicoMexico. Area Academica de ciencias de la Tierra y Materiales Universidad Autonoma del Estado de HidalgoCiudad UniversitariaCarretera Pachuca-Tulancingo Km 4.5Col.CarbonerasC.P.42184 Mineral de la ReformaHidalgoMexico. Posgrado en ciencias del Mary Limnologia Universidad Nacional Autonoma de MexicoCiudad Universitaria3000CoyoacanC.P.04510 Ciudad de MexicoMexico.

Texture, mineralogy, geochemistry, and 14c ages of two deep-sea sediment cores （GM6 and GM7） recovered in the southwestern Gulf of Mexico were investigated to infer their provenance and depositional condition. The sediments are enriched in fine-grained silt and clay and poor in sand content. Mineralogically, the sediments consist of quartz, calcite, smectite, and kaolinite. Based on the ]4c data, the age of the GM6 and GM7 sediment cores were calculated as 23,615 cal yrs. BP and 19,007 cal yrs. BP, respectively. The weathering indices such as chemical index of alteration （cIA）, chemical index of weathering （cIw）, and plagioclase index of alteration （PIA） in GM6 （56-69, 60-74, and 6]-73, respectively） and GM7 （54-69, 57-76, and 55-74, respectively） cores revealed a moderate-to-high intensity of weathering. The rare earth element （REE） patterns suggested that the sediments were derived mostly by the weathering of intermediate rocks, exposed along the coastal regions of the Gulf of Mexico. The trace elemental ratios like V/cr （〈2）, Ni/co （〈2）, and cu/Zn （〈1）, authigenic uranium content （〈1）, and ce anomaly （ce/ce＊ ≤1） suggested that the sediments were deposited under an oxic condition, which was also revealed by the benthic foraminiferal assemblages throughout the GM6 and GM7 sediment cores.

关键词： Radiocarbon age Manganosite weathering Palaeoredox condition Provenance Holocene Gulf of Mexico

Fertility Status in Natural Succession and Reclamation Areas, ModADA-Papua, Eastern Indonesia

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Journal of Agricultural Science and Technology(A) 2011年第3X期1卷 452-460页

作者： S. Taberima B. Mulyanto R. Gilkes y. Husin Department of Soil Science State University of Papua Jl. Gunung Salju-Amban Manokwari 98314 Indonesia Department of Soil Science and Land Resources Faculty of Agricultural Bogor Jl. Meranti - Darmaga Bogor 16680 Indonesia Department of School Earth and Environment the University of Western Australia 35 Stirling Highway Crawley WA 6009Australia PT. ERM Jl. Gatot Subroto kay. 72 Jakarta 12780 Indonesia

Tailings are the residue of mined material after separation of metals such as copper, gold and silver elements. Separation of minerals involves crushing of the host material to fine particles and separation of the metals by flotation or other technique. The total amount of tailings produced by Freeport Indonesia from their Grasberg mine is about 230,000 tons/day. These tailings are deposited in a lowland area and are confined by two levees. There are two types of plant growth on inactive tailings according to land use （natural succession area or reclaimed agricultural area）. This study of soil fertility on the mine tailing was required to contribute to information on the management oftailings. Representative sampling locations were chosen based on particle size distribution with soil （0- 5 50 cm depth） being subjected to laboratory analysis. Total N soil is very low （〈 0.02%）, cEc （≤20 me/100 g） low to medium, and organic-c ranges from 0.1-2%. oH is 7-8 resulting in the low availability of some nutrients, but values of extractable cu may be high （≥ 300 mg/kg）. Nutrient elements are more abundant in soils on fine textured tailings.

关键词： Fertility succession reclamation tailing.

Genomic organization of human long non-coding AcAT1c7 gene and its promoter activity

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Genomic organization of human long non-coding ACAT1C7 gene a...

TEXONO低能中微子实验中的csI(T1)晶体探测器

中国生物化学与分子生物学会第十届会员代表大会暨全国学术会议

作者： Jiajia Xu Guangjing Hu Ming Lu Xiaonan Zhao Jia chen Lei Lei ying Xiong Xinying yang catherine c.y.chang Baoliang Song Tayuan chang Boliang Li State Key Laboratory of Molecular Biology Institute of Biochemistry and Cell BiologyShanghai Institutes for Biological SciencesChinese Academy of Sciences Department of Biochemistry Dartmouth Medical School

Acyl-coenzyme A:cholesterol acyltransferase(AcAT) is a key enzyme playing important roles in cholesterol *** catalyzes the formation of cholesteryl ester from cholesterol and long-chain fatty acyl-coenzyme A in various cell *** mammals,two AcAT genes encoding AcAT1 and AcAT2 have been *** sequence of human AcAT1 mRNA is produced from two different chromosomes 1 and 7 with individual promoters P1 and P7,named AcAT1 gene and AcAT1c7 gene respectively. Our previous studies have revealed the promoter activity

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高能物理与核物理 2002年第4期26卷 393-401页

作者：李金刘延赵棣新毛泽普邱进发夏小米赖元芬盛华义王佩良庄保安赵平平石峰岳骞王子敬赖文斌陈晋平李世昌邓炳昆 wANGS.c. wANGc.w. chanGc.c. chanGc.y. 李浩斌 cHAOJ.H. LIUH.M. 唐洪庆周祖英 SUR.F. 刘正山张志勇中国科学院高能物理研究所北京100039 中研院物理研究所台北11529 马里兰大学物理系台湾大学物理系清华大学核科学发展中心中国原子能研究院物理所北京102413 核电厂核工程部中国辐射防护研究院太原030006

TEXONO合作组首次采用csI(T1 )晶体测量反应堆中微子的能量、通量和反常磁矩 ,描述了实验的基本原理。

关键词：中微子反常磁矩 csI(T1)晶体晶体探测器 TEXONO 核反应堆低能中微子实验能量通量