检索结果-南通市图书馆

INFLUENCE OF INITIAL LIQUID DISTRIBUTION ON MASS TRANSFER IN PACKED BEDS

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Engineering 1994年第2期2卷 39-53页

作者： reinhard Billet Department of Process and Environmental Engineering Ruhr University Bochum 44780 Bochum Germany

1 INTRODUCTIONA major problem in the design of packed columns is dimensioning the liquid *** of outlets is an important factor,because it governs the quality of the liquiddistribution at the inlet cross-section and thus the extent to which the packing is *** the degree of wetting and thus the greater the area of phase contact,the more efficientthe mass and heat transfer within the bed of packing.

关键词： liquid distribution packed bed

从MT2和HeLa细胞及人和黑猩猩PBMC的DNA扩增出与GBV-C 高同源性的核苷酸(英文)

在线全文

学校读者我要写书评

暂无评论

Acta Pharmacologica Sinica 2001年第4期22卷 34-40页

作者：严杰,reinhard H DENNIN 浙江大学医学院病原生物学研究所 Institute of Medical Microbiology and Hygiene Medical University of Lbeck Lbeck 23538 Germany 杭州中国 310006

目的:检测人源性细胞株DNA及人和黑猩猩外周血单核细胞(PBMC)DNA中是否存在与GBV-C基因组同源的核苷酸序列。方法:用PCR模板制备试剂盒提取MT2和HeLa细胞DNA及6例人和1例黑猩猩PBMC DNA,DNA经DNase的RNase消化后再用苯酚-氯仿提取。直... 详细信息

目的:检测人源性细胞株DNA及人和黑猩猩外周血单核细胞(PBMC)DNA中是否存在与GBV-C基因组同源的核苷酸序列。方法:用PCR模板制备试剂盒提取MT2和HeLa细胞DNA及6例人和1例黑猩猩PBMC DNA,DNA经DNase的RNase消化后再用苯酚-氯仿提取。直接以上述DNA为模板,用GBV-C5’-NCR和NS3区引物进行套式PCR(dPCR)扩增。dPCR产物进行核苷酸序列分析,并用引物介导原位扩增(PRINS)DNA序列特异荧光标记技术确定扩增片段在染色体上的位置。结果:从MT2和HeLa细胞DNA及4例人PBMC DNA标本中获得GBV-C5’- NCR引物扩增片段。从MT2和HeLa细胞DNA及5例人和1例黑猩猩PBMC DNA标本中获得NS3区引物扩增片段。这些扩增产物的核苷酸序列与GBV-C基因组同源性为73.80％-79.15％.PRINS检测结果显示dPCR阳性的PBMC及其染色体上有荧光着色。结论:MT2和HeLa细胞DNA及人和黑猩猩PBMC DNA中存在与GBV-C5’-PCR和/或NS3区同源性较高的核苷酸序列,这些序列位于dPCR阳性的PBMC染色体上。

关键词： GB肝炎剂猴疾病核酸序列同源性荧光显微镜检查 DNA 人类单核细胞聚合酶链反应

INFLUENCE OF PHASE RATIO ON PACKING EFFICIENCY IN COLUMNS FOR MASS TRANSFER PROCESSES

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Engineering 1997年第2期5卷 25-34页

作者： reinhard Billet Michael Schultes Institute of Thermo-and Fluid-dynamics Ruhr-University BochumInstitute of Thermo-and Fluid-dynamicsRuhr-University Bochum D-44780 BochumGermanyD-44780 BochumGermany

The phase ratio has been found to affect the packing efficiency in packed *** ac-count for the effect,a model is set up to correlate the height of a mass transfer unit with the phaseratio with reasonable *** also is a correlation that allows to predict the efficiency inquestion at any given liquid-gas ratio using the knowledge of other efficiency values at other liquid-gas ratios.

关键词： phase ratio height of a transfer unit packings

An Innovative Passive Tip-Leakage Control Method for Axial Turbines:Basic Concept and Performance Potential

在线全文

学校读者我要写书评

暂无评论

Journal of Thermal Science 2007年第3期16卷 215-222页

作者： Markus Hamik reinhard Willinger Institute for Thermodynamics and Energy Conversion Vienna University of TechnologyGetreidemarkt 9/302A-1060 ViennaAustria

现在的纸为被动汽轮机尖端漏控制介绍一个新概念。方法的基本想法由一条内部隧道是片前缘和片尖端的连接。由于在前缘的停滞压力和在片尖端的低压力之间的差别，工作液体的小数量从片经过被提取。在片尖端，一口喷气被注射对片压力差别... 详细信息

现在的纸为被动汽轮机尖端漏控制介绍一个新概念。方法的基本想法由一条内部隧道是片前缘和片尖端的连接。由于在前缘的停滞压力和在片尖端的低压力之间的差别，工作液体的小数量从片经过被提取。在片尖端，一口喷气被注射对片压力差别驾驶的尖端差距流动粗略地垂直。喷气堵住尖端差距流动的至少部分，这被建议。自从尖端漏损失，与尖端差距团流动率成正比，在联系损失的减小的尖端注射结果。在这个概念的介绍以后，一个分析模型被介绍它由于尖端注射描述尖端差距分泌物系数的减小。而且，分析模型被初步的 CFD 分析的结果支持。最后，由被动的片尖端注射方法的效率改进的潜力被报导。

关键词：轴流式透平渗漏式流叶梢喷射效率

Establishment of a sediment transport capacity equation on loessal slope via experimental investigation

在线全文

学校读者我要写书评

暂无评论

International Journal of Sediment Research 2023年第2期38卷 166-174页

作者： Tian Wang Jingsi Li Jingming Hou Peng Li Shengdong Cheng Feng Wang Wen Wang Zhanbin Li reinhard Hinkelmann State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China Xi'an University of Technology Chair of Water Resources Management and Modeling of Hydrosystems Department of Civil Engineering Technische Universit at Berlin Shaanxi Province Institute of Water Resources and Electric Power Investigation and Design Key Laboratory of National Forestry Administration on Ecological Hydrology and Disaster Prevention in Arid Regions Xi'an University of Technology

Areliable sediment transport capacity function provides response against challenges of soil erosion prediction on the Loess Plateau of China. The popular sediment transport capacity functions are questionable on loess slopes because the experimental conditions from which they were derived, like bed materials, gentle slopes,and surface roughness, are different from soil erosion processes on the loess slopes. Due to the foregoing uncertainty, a suitable sediment transport capacity function was developed based on a flume experiment investigation. The erodible bed experiment was implemented for five unit width discharges(1.3 × 10-4-3.3 × 10-4m2/s) and ten slopes(5.2%-57.7%). The selected sediment transport capacity equations were tested in an applicability evaluation. The results of this evaluation found that the Govers(1990) function had the best performance(P.O.0.5-2.0= 76%, R2= 0.93, RMSE = 0.03 kg/(m·s)), followed by the Yalin(1963) function(P.O.0.5-2.0= 80%, R2= 0.81, RMSE = 0.05 kg/(m·s)), and finally by the Low(1989) function(P.O.0.5-2.0= 72%,R2= 0.79, RMSE = 0.04 kg/(m·s)), where P.O.0.5-2.0is the percentage of estimated values with logarithmic discrepancies with the measured value between 0.5 and 2.0; R2is the coefficient of determination and RMSE is the roof mean squares error. The cohesive sediment incipient motion velocity is introduced into the Govers(1990) function, and the sediment particle parameter is determined from measured experimental data. The developed sediment transport capacity equation has good performance with predicted values corresponding to measured values(P.O.0.5-2.0= 98%, R2= 0.98, RMSE = 0.006 kg/(m·s)). The research results provide an improved sediment transport capacity function on the basis of experiments for steep loessal slopes.

关键词： Experimental investigation Hydraulic conditions Loessal slope Sediment transport capacity

Successful management of vaccine-induced immune thrombotic thrombocytopenia-related cerebral sinus venous thrombosis after ChAdOx1 nCov-19 vaccination

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Stroke & Vascular Neurology 2022年第1期7卷 86-88页

作者： Thomas Gattringer Paul Gressenberger Thomas Gary Albert Wöfler Markus Kneihsl reinhard Bernd Raggam Neurology Medical University of GrazGrazAustria Divison of Angiology Department of Internal MedicineMedical University of GrazGrazAustria Divison of Haematology Department of Internal MedicineMedical University of GrazGrazAustria

Very recently,unusual thrombotic events in combination with severe thrombocytopenia have been reported 1–2 weeks following SARS-CoV-2 vaccination with ChAdOx1 nCov-19(AstraZeneca).This condition,termed VITT(vaccine-induced immune thrombotic thrombocytopenia),has been related to high risk of fatal outcome with both ischaemic and haemorrhagic complications.12 Optimal treatment strategies still need to be elucidated—especially in case of cerebral sinus venous thrombosis(CSVT)with associated brain haemorrhage as the underlying thrombotic *** here report our clinical experience with two young women diagnosed with VITT-associated CSVT,treated with high-dose intravenous immunoglobulins(IVIGs),corticosteroids and argatroban in the hyperacute phase,followed by dabigatran resulting in excellent outcome.

关键词： vaccination thrombotic cerebral

二甲双胍在慢性高胰岛素处理的Hep G2细胞对胰岛素受体后信号转导的调节作用(英文)

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Pharmacologica Sinica 2003年第1期24卷 57-62页

作者：袁莉,reinhard ZIEGLER,Andreas HAMANN 德国海德堡大学医院内分泌代谢科德国海德堡大学医院内分泌代谢科德国海德堡大学医院内分泌代谢科海德堡 69115 德国 Department of Endocrindlogy in Union Hospital of tongji Medical Colege Huazhong University of Science and Technology Wuhan 430022 China 海德堡 69115 德国海德堡 69115 德国

目的:研究慢性高胰岛素对胰岛素受体后信号转导的影响及其与胰岛素抵抗的关系,并探讨二甲双胍治疗胰岛素抵抗是否通过胰岛素信号转导途径的介导。方法:人类肝癌细胞系(Hep G2)在无血清条件下首先与100nmol/L高浓度胰岛素预温育16h以产... 详细信息

目的:研究慢性高胰岛素对胰岛素受体后信号转导的影响及其与胰岛素抵抗的关系,并探讨二甲双胍治疗胰岛素抵抗是否通过胰岛素信号转导途径的介导。方法:人类肝癌细胞系(Hep G2)在无血清条件下首先与100nmol/L高浓度胰岛素预温育16h以产生胰岛素抵抗细胞模型,并观察不同浓度(0.01-10mmol/L)的二甲双胍对胰岛素受体后磷酯酰肌醇3激酶(PI3K)途径信号转导的影响。结果:高浓度胰岛素100nmol/L慢性处理引起了IRβ、IRS1和IRS2的酪氨酸磷酸化和蛋白表达水平的下调,p85与IRS的相互作用也有显著降低。生理治疗浓度的(0.01-0.1mmol/L)二甲双胍逆转了这种慢性高胰岛素引起的信号下调,细胞用0.1mmol/L二甲双胍预温育后,IRB、IRS1和IRS2的磷酸化反应水平分别增加了2.7倍(P<0.01),6.8倍(P<0.01)和2.3倍(P<0.01),p85与IRS1的相互作用从34％增加至86％(P<0.01),与IRS2的相互作用从30％增加至92％(P<0.01)。相反,药物浓度(1-10mmol/L)的二甲双胍进一步抑制了IRB、IRS的磷酸化及IRS与p85的相互作用。结论:高浓度胰岛素慢性处理可引起胰岛素受体后PI3K途径信号转导的下调,二甲双胍对胰岛素信号转导的作用可能是其治疗胰岛素抵抗的主要分子机制。

关键词：二甲双胍胰岛素受体信号传递

Uncertainty relations for general phase spaces

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Frontiers of physics 2016年第3期11卷 51-60页

作者： reinhard F. Werner Institut fiir Theoretische Physik Leibniz Universitiit Hannover Germany

We describe a setup for obtain!ing uncertainty relations for arbitrary pairs of observables related by a Fourier transform. The physical examples discussed here are the standard position and momentum, number and angle, finite qudit systems, and strings of qubits for quantum information applications. The uncertainty relations allow for an arbitrary choice of metric for the outcome distance, and the choice of an exponent distinguishing, e.g., absolute and root mean square deviations. The emphasis of this article is on developing a unified treatment, in which one observable takes on values in an arbitrary locally compact Abelian group and the other in the dual group. In all cases, the phase space symmetry implies the eciuality of measurement and preparation uncertainty bounds. There is also a straightforward method for determining the optimal bounds.

关键词： uncertainty relations phase space measurement uncertainty

Equivariant analytical mapping of first principles Hamiltonians to accurate and transferable materials models

在线全文

学校读者我要写书评

暂无评论

npj Computational Materials 2022年第1期8卷 1468-1481页

作者： Liwei Zhang Berk Onat Geneviève Dusson Adam McSloy G.Anand reinhard J.Maurer Christoph Ortner James R.Kermode Department of Mathematics University of British Columbia1984 Mathematics RoadVancouverBCV6T 1Z2Canada Warwick Centre for Predictive Modelling School of EngineeringUniversity of WarwickCoventryCV47ALUK Laboratoire de Mathématiques UMR CNRS 6623UniversitéBourgogne Franche-Comté16 route de Gray25030BesançonFrance Department of Metallurgy and Materials Engineering Indian Institute of Engineering Science and Technology-ShibpurHowrahWBIndia Department of Chemistry University of WarwickCoventryCV47ALUK

We propose a scheme to construct predictive models for Hamiltonian matrices in atomic orbital representation from ab initio data as a function of atomic and bond *** scheme goes beyond conventional tight binding descriptions as it represents the ab initio model to full order,rather than in two-centre or three-centre *** achieve this by introducing an extension to the atomic cluster expansion(ACE)descriptor that represents Hamiltonian matrix blocks that transform equivariantly with respect to the full rotation *** approach produces analytical linear models for the Hamiltonian and overlap *** an application to aluminium,we demonstrate that it is possible to train models from a handful of structures computed with density functional theory,and apply them to produce accurate predictions for the electronic *** model generalises well and is able to predict defects accurately from only bulk training data.

关键词： structure Hamiltonian analytical