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471篇 您的检索式:作者名="Fritz P"
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1时间分辨红外光谱对丝蛋白膜构象转变动力学的研究──再生蚕丝蛋白膜在高浓度醇溶液中的构象转变显示文摘运用时间分辨红外光谱研究再生蚕丝蛋白膜在高浓度醇溶液中 (醇含量≥ 90 % )的构象转变过程 .研究结果表明 ,丝蛋白膜在纯甲醇中可以发生构象转变 ,但是在纯乙醇和纯异丙醇中却几乎不能发生构象转变 .进一步研究发现 ,当乙醇和异丙醇溶液中的水含量达到 7%~ 8%时 ,丝蛋白开始发生构象转变 .在研究的醇溶液浓度范围中 ,丝蛋白发生构象转变的速率随醇溶液中水含量的增加而增大 .根据实验结果 ,认为丝蛋白膜在溶液体系中 (无论是有机溶剂溶液还是离子溶液 )发生构象转变 ,膜的溶胀是一个前提因素 ,其原因在于溶胀可使分子链获得运动的空间 ,从而通过氢键重组而发生构象转变 .陈新 周丽 邵正中 周平 KNIGHT David P VOLLRATH Fritz 2003化学学报2003,61,4:22
2Cetuximab plus FOLFOX6 or FOLFIRI in metastatic colorectal cancer: CECOG trial显示文摘AIM: To investigate efficacy and safety of cetuximab combined with two chemotherapy regimens in patients with unresectable metastatic colorectal cancer (mCRC). METHODS: Randomized patients received cetuximab with 5-fluorouracil (5-FU), folinic acid (FA) and oxaliplatin (FOLFOX) 6 (arm A, n = 74) or 5-FU, FA and irinotecan (FOLFIRI) (arm B, n = 77). KRAS mutation status was determined retrospectively in a subset of tumors (n = 117). RESULTS: No significant difference was found between treatment arms A and B in the progression-free survival (PFS) rate at 9 mo, 45% vs 34%; median PFS, 8.6 mo vs 8.3 mo [hazard ratio (HR) = 1.06]; overall response rate (ORR) 43% vs 45% [odds ratio (OR) = 0.93] and median overall survival (OS), 17.4 mo vs 18.9 mo (HR = 0.98). Patients with KRAS wild-type tumors demonstrated improved PFS (HR = 0.55, P = 0.0051), OS, (HR = 0.62, P = 0.0296) and ORR (53% vs 36%) and in arm A, improved PFS (HR = 0.49, P = 0.0196), OS (HR = 0.48, P = 0.0201) and ORR (56%vs 30%), compared with patients with KRAS mutated tumors. In arm B no significant differences were found in efficacy by KRAS mutation status. Treatment in arms A and B was generally well tolerated. CONCLUSION: This study confirms that combinations of cetuximab with FOLFOX6 or FOLFIRI are effective and significantly improve clinical outcome in KRAS wild-type compared with KRAS mutated mCRC.Janja Ocvirk Thomas Brodowicz Fritz Wrba Tudor E Ciuleanu Galina Kurteva Semir Beslija Ivan Koza Zsuzsanna Pápai Diethelm Messinger Ugur Yilmaz Zsolt Faluhelyi Suayib Yalcin Demetris Papamichael Miklós Wenczl Zrinka Mrsic-Krmpotic Einat Shacham-Shmueli Damir Vrbanec Regina Esser Werner Scheithauer Christoph C Zie-linski 2010World Journal of Gastroenterology2010,16,25:17
32001年1月26日高纬磁层顶通量管事件的观测研究显示文摘20 0 1年 1月 2 6日 11:10~ 11:4 0UT ,ClusterⅡ卫星簇位于午后高纬磁鞘边界层和磁鞘区 ,此时行星际磁场Bz 为南向 .本文对在此期间观测到的多次磁通量管事件作了详细的研究 ,获得一系列的新发现 :(1)高纬磁鞘边界层磁通量管的出现具有准周期性 ,周期约为 78s,比目前已知的磁层顶向阳面FTE的平均周期 (8~ 11min)小得多 .(2 )这些通量管都具有强的核心磁场 ;其主轴多数在磁场最小变化方向 ,少数在中间变化方向 ,有些无法用PAA判定其方向 (需要用电流管PAA确定 ) ,这与卫星穿越通量管的相对路径有关 .(3)每个事件都存在很好的HT参考系 ,在HT参考系中这些通量管是准定常态结构 ;所有通量管都沿磁层顶表面运动 ,速度方向大体相同 ,都来自晨侧下方 .通量管的径向尺度为 1~ 2RE,与通常的FTE通量管相当 .(4 )起源于磁层的强能离子大体上沿着管轴方向由磁层向磁鞘运动 ;起源于太阳风的热等离子体沿管轴向磁层传输 .通量管为太阳风等离子体向磁层输运和磁层粒子向行星际空间逃逸提供了通道 .(5 )每个通量管事件都伴随有晨昏电场的反转 ,该电场为对流电场 .黄宗英 濮祖荫 肖池阶 宗秋刚 傅绥燕 谢伦 史全岐 曹晋滨 刘振兴 沈超 史建魁 路立 王迺权 陈涛 T Fritz K-H Glassmeier P Daly H Rème 2004地球物理学报2004,47,2:7
4Effect of rapamycin on hepatic osteodystrophy in rats with portasystemic shunting显示文摘瞄准:如果与推延的 portasystemic 有关的 T 房间激活通过 RANKL 依赖的小径引起调停骨破折的骨头损失,学习。如果用 rapamycin 的 T 房间抑制将在老鼠免于骨头损失,我们也调查了。方法:推延的 Portasystemic 在男 Sprague-Dawley 老鼠和 rapamycin 被执行 0.1 mg/kg 被管饲法为 15 wk 管理。老鼠收到了 powderized 食物并且补加喂在骨头作文上阻止营养不良的效果。重量获得和生长在推延的动物在外科以后被恢复。在结束,骨头周转和量的骨头组织学的生物化学的参数被估计。T 房间激活,煽动性的 cytokine 生产,和 RANKL 依赖的小径的标记被测量。另外, IGF-1 和性腺机能减退的角色被调查。结果:推延的 Portasystemic 引起了是 RANKL 独立人士的低周转骨质疏松症。包括 IL-1, IL-6 和 TNFalpha,骨头再吞 cytokine 层次没在浆液和 TNFalpha 被增加, RANKL 表示不起来在 PBMC 调整了。推延的 Portasystemic 增加了传播 CD8+T 房间人口。Rapamycin 减少了传播 CD8+T 房间人口,增加了 CD8+CD25+T 规章的房间人口并且改进了骨头周转的所有参数。结论:推延的 portasystemic 引起的骨质疏松症可以被 rapamycin 部分在肝的骨营养不良的老鼠模型改善。Schalk W van der Merwe Maria M Conradie Robert Bond Brenda J Olivier Elongo Fritz Martin Nieuwoudt Rhena Delport Tomas Slavik Gert Engelbrecht Del Kahn Enid G Shephard Maritha J Kotze Nico P de Villiers Stephen Hough 2006World Journal of Gastroenterology2006,12,28:2
5Acid catalysis by dealuminated zeolite-Y I Methanol dehydration and cumene dealkylation显示文摘DECANIO S J SOHN J R FRITZ P O 1986Journal of Catalysis1986,101,1:1
6Fractionation of sulfur and oxygen isotopes in sulfate by soil sorption 显示文摘van Stempvoort D R Reardon E J Fritz P 1990Geochim Cosmochim Acta1990,54,10:1
7Translating biomolecular recognition into nanomechanics显示文摘Fritz J Bailer M K Lang H P 2000Science2000,288,:1
8Phenetic Diversity of Alkaliphilic Bacillus Strains:Proposal for Nine New Species显示文摘Nielsen P Fritze D Priest F G 1995Microbiology1995,141,:1
9Monitoring the temporal and spatial activation pattern astrocyte in focal cerebral ischemla using in situ hybridization to GFAP mRNA: Comparison with SGP-2 and HSP70, mRNA and the effect of glutamine receptor antagonists 显示文摘Yamashita K Vogel P Fritze K 1996Brain Rcs1996,735,:1
10Wing rotation and the aerodynamic basis of insect flight显示文摘Michael H Dickinson Fritz Olaf Lehmann Sane Sanjay P 0,,5422:1
11Orthodontic Space Clo- sure in Combination with Membrane Sup! orted Healing of Extraction Sockets (MHE) 显示文摘Julia T Diedrich P Fritz U 2002J Orofacial orthopedics2002,63,5:1
12Phenetic diversity of alkaliphilic Bacillus strains: proposal for nine new species显示文摘NieLsen P Fritze D Priest FG 1995Microbiology1995,141,7:1
13The effect of sodium poisoning on dealuminated Y-type zeolites显示文摘FRITZ P O LUNSFORD J H 1989Journal of Catalysis1989,118,1:1
14Seasonal chemical and isotopic variations of soil CO2 at Trout Creek,Outario显示文摘REARDON E J ALLISON G B FRITZ P 1979Journal of Hydrology1979,43,1:1
15The isotopic composition of secondary dolomites显示文摘Fritz P smith D G W 1970Geochimica et Cosmochimica Acta1970,34,:1
16Expression of cytochrome P450 3A enzymes in human lung: a combined RT-PCR and immunohistochemical analy- sis of normal tissue and lung tumours显示文摘Kivisto KT Griese EU Fritz P 1996Naunyn Schmiedebergs Arch Pharmacol1996,353,2:1
17The carbon isotope geochemistry of a small groundwater system in northeastern Ontario显示文摘FRITZ P REARDON E J BARKER J 1987Water Resources Research1987,14,6:1
18The role of intestinal P glycoprotein in the interaction of digoxin and rifampin 显示文摘Greiner B Eichelbaum M Fritz P 1999J Clin Invest1999,104,:1
19Translating biomolecular recognition into nanomechanics显示文摘Fritz J Baller M K Lang H P 2000Science2000,288,14:1
20Clinical suitability of titanium microscrews for orthodontic anchorage-preliminary experiences 显示文摘Fritz U Ehmer A Diedrich P 2004J Orofac Orthop2004,65,5:1
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