نتایج جستجو برای: zr

تعداد نتایج: 9678  

Journal: :Journal of the American Chemical Society 2010
Dmitrii E Babushkin Hans H Brintzinger

Addition of 1-hexene to methylalumoxane-activated catalyst systems based on rac-Me(2)Si(ind)(2)ZrMe(2) causes, concurrent with polyhexene formation and diminution of the otherwise prevalent cation [rac-Me(2)Si(ind)(2)Zr(mu-Me)(2)AlMe(2)](+), formation of a hitherto unobserved species [rac-Me(2)Si(ind)(2)Zr(mu-R)(mu-Me)AlMe(2)](+), where R is a Zr-bound polyhexyl chain. As hexene is increasingly...

Journal: :Microscopy and microanalysis : the official journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada 2007
Keith E Knipling David C Dunand David N Seidman

Atom probe tomography was utilized to measure directly the chemical compositions of Al(3)(Zr(1)-(x)Ti(x)) precipitates with a metastable L1(2) structure formed in Al-0.1Zr-0.1Ti (at.%) alloys upon aging at 375 degrees C or 425 degrees C. The alloys exhibit an inhomogeneous distribution of Al(3)(Zr(1)-(x)Ti(x)) precipitates, as a result of a nonuniform dendritic distribution of solute atoms afte...

2014
Nerissa Therese Viola-Villegas Kuntal K. Sevak Sean D. Carlin Michael G. Doran Henry W. Evans Derek W. Bartlett Anna M. Wu Jason S. Lewis

Engineered antibody fragments offer faster delivery with retained tumor specificity and rapid clearance from nontumor tissues. Here, we demonstrate that positron emission tomography (PET) based detection of prostate specific membrane antigen (PSMA) in prostatic tumor models using engineered bivalent antibodies built on single chain fragments (scFv) derived from the intact antibody, huJ591, offe...

2017
Wai-Yee Chan Yong-Gang Yao

The year 2016 was a wonderful and important one for Zoological Research (ZR). In recognition of its impressive progress and great potential to develop into a leading journal in the field, ZR is now supported by the “Project for Enhancing International Impact of China STM Journals” (PIIJ) (Class B) (2016–2018). Having wide coverage, PIIJ is the most influential project in China for supporting an...

Journal: :The journal of contemporary dental practice 2015
Syed Rashid Habib Ibraheem F Al Shiddi

OBJECTIVE This study assessed how changing the Zirconia (Zr) substructure affected the color samples after they have been overlaid by the same shade of veneering ceramic. MATERIALS AND METHODS Three commercial Zr materials were tested in this study: Prettau(®) Zirconia (ZirKonZahn, Italy), Cercon (Dentsply, Germany) and InCoris ZI (Sirona, Germany). For each system, 15 disk-shaped specimens (...

Journal: :Journal of nuclear medicine : official publication, Society of Nuclear Medicine 2011
Thijs H Oude Munnink Marlous E A Arjaans Hetty Timmer-Bosscha Carolina P Schröder Jan W Hesselink Silke R Vedelaar Annemiek M E Walenkamp Michael Reiss Richard C Gregory Marjolijn N Lub-de Hooge Elisabeth G E de Vries

UNLABELLED Transforming growth factor-β (TGF-β) promotes cancer invasion and metastasis and is therefore a potential drug target for cancer treatment. Fresolimumab, which neutralizes all mammalian active isoforms of TGF-β, was radiolabeled with (89)Zr for PET to analyze TGF-β expression, antibody tumor uptake, and organ distribution. METHODS (89)Zr was conjugated to fresolimumab using the che...

2012
Hongmei Zhu Gang Sha Jiangwen Liu Hongwei Liu Cuilan Wu Chengping Luo Zongwen Liu Rongkun Zheng Simon P Ringer

Zirconium (Zr) is an important alloying element to Mg-Zn-based alloy system. In this paper, we report the formation of the β-type precipitates on the nanoscale Zr-rich particles in a Mg-6Zn-0.5Cu-0.6Zr alloy during ageing at 180°C. Scanning transmission electron microscopy examinations revealed that the nanoscale Zr-rich [0001]α rods/laths are dominant in the Zr-rich core regions of the as-quen...

2013
Yu-chen Karen Chen-Wiegart Takeshi Wada Nikita Butakov Xianghui Xiao Hidemi Kato Jun Wang David C. Dunand Eric Maire

The 3D morphological evolution of titanium foams as they undergo a two-step fabrication process is quantitatively characterized through x-ray microand nano-tomography. In the first process step, a Cu–Ti–Cr–Zr prealloy is immersed in liquid Mg, where Cu is alloyed with Mg while a skeleton of crystalline Ti–Cr–Zr is created. In the second step, the Mg–Cu phase is etched in acid, leaving a Ti–Cr–Z...

2009
Juan Chen

The monomeric title zirconium(IV) compound, [Zr(C(12)H(21)N(2)Si)(2)Cl(2)], was prepared by the metathetical reaction of [LiN(SiMe(2)NMe(2))(2,6-Me(2)C(6)H(3))](2) with zirconium tetra-chloride. The Zr(IV) atom is N,N'-chelated by the N-silylated anilido ligand. Along with two Cl atoms, the six-coordinated Zr(IV) atom demonstrates a highly distorted octa-hedral geometry. The two ligands around ...

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