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1816篇 您的检索式:作者名="Schenk"
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1Recent status of fluidized bed technologies for producing iron input materials for steelmaking显示文摘Today steel is produced by two steelmaking processes, the basic oxygen furnace and the electric arc furnace. Three types of iron input materials for both processes are liquid hot metal or in solidified form as pig iron, direct reduced iron (DRI) and hot briquetted iron (HBI) as well as steel scrap. Hot metal, pig iron, DRI and HBI are virgin iron materials, which have to be produced from iron ore by the so-called ironmaking technologies. New ironmaking processes based on fluidized bed technology have been developed in the last two decades. The main advantage of these technologies is that fine ore can be directly used in the processes and prior treatment such as sintering or pelletizing can be avoided which is required for the established processes. Theoretical aspects for reduction of fine iron oxides in a fluidized bed reactor system will be explained. The fluidized bed reducing technologies utilized in the most advanced new ironmaking processes for direct use of fine ore, FINMET  , Circored  , FINEX  and HIsmelt  will be compared.Johannes Leopold Schenk 2011Particuology2011,9,1:16
2伦敦2012奥运会主体育场显示文摘2011年,中国将再一次承办世界级的体育赛事,在夏季世界大学生运动会举办的几个星期的时间里,位于中国大陆的珠江三角洲、香港之北的新兴城市--深圳,将成为世界瞩目的焦点.坐落在深圳宝安区的宝安体育馆,可容纳40 000名观众.虽然被设计为一个田径体育馆,但在2011年它将担负重任,作为大学生运动会足球比赛的赛场.David Schenke 李竞一 2011建筑技艺2011,0,2:5
3深圳宝安体育场设计显示文摘深圳宝体育场是一座能容纳4万人的田径体育场,在2011年世界大学生运动会中作为足球赛场投入使用。场馆的设计灵感来源于具有华南地区风情的竹林场景,在重现地域特色的同时,"竹林"还构成了看台以及大跨度屋面的结构支撑系统。建筑的外表皮将建筑立面、斯特凡·胥茨(德StephanSchütz) 沈大伟(德David Schenke) 2011建筑学报2011,,9:3
4Bifunctional chimeric SuperCD suicide gene -YCD: YUPRT fusion is highly effective in a rat hepatoma model显示文摘AIM: To investigate the effects of catalytically superior gene-directed enzyme prodrug therapy systems on a rat hepatoma model.METHODS: To increase hepatoma cell chemosensitivity for the prodrug 5-fluorocytosine (5-FC), we generated a chimeric bifunctional SuperCD suicide gene, a fusion of the yeast cytosine deaminase (YCD) and the yeast uracil phosphoribosyltransferase (YUPRT) gene.RESULTS: In vitro stably transduced Morris rat hepatoma cells (MH) expressing the bifunctional SuperCD suicide gene (MH SuperCD) showed a clearly marked enhancement in cell killing when incubated with 5-FC as compared with MH ceils stably expressing YCD solely (MH YCD) or the cytosine deaminase gene of bacterial origin(MH BCD), respectively. In vivo, MH SuperCD tumors implanted both subcutaneously as well as orthotopically into the livers of syngeneic ACI rats demonstrated significant tumor regressions (P<0.01) under both high dose as well as low dose systemic 5-FC application,whereas MH tumors without transgene expression (MH naive) showed rapid progression. For the first time, an order of in vivo suicide gene effectiveness (SuperCD>>YCD > > BCD > > > negative control) was defi ned as a result of a directin vivo comparison of all three suicide genes.CONCLUSION: Bifunctional SuperCD suicide gene expression is highly effective in a rat hepatoma model,thereby significantly improving both the therapeutic index and the efficacy of hepatocellular carcinoma killing by fluorocytosine.Florian Graepler Marie-Luise Lemken Wolfgang A Wybranietz Ulrike Schmidt Irina Smirnow Christine D GroB Martin Spiegel Andrea Schenk Schenk Hansj(o|¨)rg Graf Ulrike A Lauer Reinhard Vonthein Michael Gregor Sorin Armeanu Michael Bitzer Ulrich M.Lauer 2005World Journal of Gastroenterology2005,11,44:2
5The use of 4D-CTA in the diagnostic work-up of brain arteriovenous malformations显示文摘Peter W. A. Willems Patamintita Taeshineetanakul Barry Schenk Patrick A. Brouwer Karel G. Terbrugge Timo Krings 2012Neuroradiology2012,,2:2
6The conversion of oil into gas in petroleum reservoirs. Part 1: Comparative kinetic investigation of gas generation from crude oils of lacustrine, marine and fluviodeltaic origin by programmed-temperature closed-system pyrolysis显示文摘H.J. Schenk R. Di Primio B. Horsfield 1997Organic Geochemistry1997,,:2
7Postharvest quality of integrated and organically produced apple fruit显示文摘E. Róth A. Berna K. Beullens S. Yarramraju J. Lammertyn A. Schenk B. Nicola? 2007Postharvest Biology and Technology2007,,1:2
8Fluidization behavior and reducibility of iron ore fines during hydrogen-induced fluidized bed reduction显示文摘A laboratory fluidized bed reactor was used to investigate the fluidization behavior and reducibility of various iron ore fines.Hydrogen was chosen as a reducing agent across a temperature range of 873-1073 K.The magnetite ore used exhibited strong sticking behavior after the initiation of metallic iron formation.All other tested ores fluidized sufficiently well when subjected to the same high reduction temperatures.Parallel kinetic analysis was conducted using a previously developed model to include three rate-limiting step types.The trend of apparent activation energy was correlated with the degree of reduction.Additionally,the influence of varying the specific gas rate was investigated.The results show the variation in reducibility as a result of different interactions,which influence the rate-limiting mechanisms of nucleation and the undertaken chemical reactions,which vary as a function of temperature and degree of conversion.The apparent activation energies,determined from the reduction of wtistite to metallic iron,were in the range of 15-60 kJ/mol,depending on the iron ore used and the degree of conversion.The change in apparent activation energy deriving from the increased specific gas rate can be explained by an increasing nucleation effect,especially at lower reduction temperatures.Daniel Spreitzer Johannes Schenk 2020Particuology2020,18,5:2
9Concept and proof for an all-silicon MEMS micro speaker utilizing air chambers显示文摘MEMS-based micro speakers are attractive candidates as sound transducers for smart devices,particularly wearables and hearables.For such devices,high sound pressure levels,low harmonic distortion and low power consumption are required for industrial,consumer and medical applications.The ability to integrate with microelectronic circuitry,as well as scalable batch production to enable low unit costs,are the key factors benchmarking a technology.The Nanoscopic Electrostatic Drive based,novel micro speaker concept presented in this work essentially comprises inplane,electrostatic bending actuators,and uses the chip volume rather than the its surface for sound generation.We describe the principle,design,fabrication,and first characterization results.Various design options and governing equations are given and discussed.In a standard acoustical test setup(ear simulator),a MEMS micro speaker generated a sound pressure level of 69 dB at 500 Hz with a total harmonic distortion of 4.4%,thus proving the concept.Further potential on sound pressure as well as linearity improvement is outlined.We expect that the described methods can be used to enhance and design other MEMS devices and foster modeling and simulation approaches.Bert Kaiser Sergiu Langa Lutz Ehrig Michael Stolz Hermann Schenk Holger Conrad Harald Schenk Klaus Schimmanz David Schuffenhauer 2019Microsystems & Nanoengineering2019,5,1:2
10Association between polymorphism in the chemokine receptor CX3CR1 and coronary vascular endothelial dysfunction and atherosclerosis显示文摘Mc Dermott DH Halcox JP Schenke WH 2001Cir Res2001,89,5:1
11The secreted form of the Alzheimer's precursor protein with the Kunitz domain is protease nexin-Ⅱ显示文摘Oltersdorf T Fritz LC Schenk DB 1989Nature1989,341,6238:1
12Amyloid_beta immunotherapy for Alzheimers disease:The end of the beginning显示文摘Schenk D 2002Nat Rev Neurosci2002,3,10:1
13Alzheimer's disease: molecular understanding predictsamyloid-based therapeutics 显示文摘Selkoe DJ Schenk D 2003Annu Rev Pharmacol Toxicol2003,43,:1
14Varations of the extensor tendons of the fingers:surgical significance显示文摘Schenk R 1964J Bone Joint Surg Am1964,46,:1
15Root characteristics of corn genotypes is related to uptake显示文摘SCHENK M K BARBER S A 1979Agronomy Journal1979,,71:1
16Comparison of exercise testing with studies of coronary flow reserve in patients with microvascular angina显示文摘Cannon RO 3rd Schenke WH Quyyumi A 1991Circulation1991,83,5:1
17查看详情显示文摘Eggli P S Muller W Schenk R K 0,,:1
18Risk factors for degener- ative spondylolisthesis : a systematic review 显示文摘Devine JG Schenk - Kisser JM Skelly AC 2012Evid Based Spine Care J2012,2,:1
19Becoming a parent and relation- ship satisfaction: A longitudinal dyadic perspective 显示文摘Keizer R Schenk N 2012Jour - hal of Marriage and Family2012,74,4:1
20Potassium and phosphorus uptake by corn genotypes grown in the field as influences by root charactertics显示文摘Schenk MK Barber SA 1980Plant and Soil1980,54,:1
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