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6篇 您的检索式:作者名="H.Phillips"
    题名 作者 年代 出处 被引量
1The multidisciplinary team meeting improves staging accuracy and treatment selection for gastro‐esophageal cancer显示文摘A. R.Davies D. A. C.Deans I.Penman J. N.Plevris J.Fletcher L.Wall H.Phillips H.Gilmour D.Patel A.De Beaux S.Paterson‐Brown 2006Diseases of the Esophagus2006,,6:1
2Metabolic activation of diesel exhaust carcinogens in primary and immortalized human TP53 knock‐in (Hupki) mouse embryo fibroblasts显示文摘Jill E.Kucab David H.Phillips Volker M.Arlt 2012Environ Mol Mutagen2012,,3:1
3Uranium sequestration in sediment at an iron-rich contaminated site at Oak Ridge, Tennessee via.bioreduction followed by reoxidation显示文摘This study evaluated uranium sequestration performance in iron-rich (30 g/kg) sediment via bioreduction followed by reoxidation.Field tests (1383 days) at Oak Ridge,Tennessee demonstrated that uranium contents in sediments increased after bioreduced sediments were re-exposed to nitrate and oxygen in contaminated groundwater.Bioreduction of contaminated sediments (1200 mg/kg U) with ethanol in microcosm reduced aqueous U from 0.37 to 0.023 mg/L.Aliquots of the bioreduced sediment were reoxidized with O2,H2O2,and NaNO3,respectively,over 285 days,resulting in aqueous U of 0.024,1.58 and 14.4 mg/L at pH 6.30,6.63 and 7.62,respectively.The source-and the three reoxidized sediments showed different desorption and adsorption behaviors of U,but all fit a Freundlich model.The adsorption capacities increased sharply at pH 4.5 to 5.5,plateaued at pH 5.5 to 7.0,then decreased sharply as pH increased from 7.0 to 8.0.The O2-reoxidized sediment retained a lower desorption efficiency at pH over 6.0.The NO3--reoxidized sediment exhibited higher adsorption capacity at pH 5.5 to 6.0.The pH-dependent adsorption onto Fe(Ⅲ) oxides and formation of U coated particles and precipitates resulted in U sequestration,and bioreduction followed by reoxidation can enhance the U sequestration in sediment.Peng-Song Li Wei-Min Wu Debra H.Phillips David B.Watson Shelly Kelly Bing Li Tonia Mehlhorn Kenneth Lowe Jennifer Earles Hu-Chun Tao Tong Zhang Craig S.Criddle 2019Journal of Environmental Sciences2019,31,11:1
4Photo-Induced Spin Dynamics in Nanoelectronic Devices显示文摘The present research is devoted to the investigation of electron spin transmission through a nanoelectronic device.This device is modeled as nonmagnetic semiconductor quantum dot coupled to two diluted magnetic semiconductor leads.The spin transport characteristics through such a device are investigated under the effect of an ac-field of a wide range of frequencies.The present result shows a periodic oscillation of the conductance for both the cases of parallel and antiparallel spin alignment.These oscillations are due to Fano-resonance.Results for spin polarization and giant magneto-resistance show the coherency property.The present research might be useful for developing single spin-based quantum bits(qubits)required for quantum information processing and quantum spin-telecommunication.Mina D.Asham Walid A.Zein Adel H.Phillips 2012Chinese Physics Letters2012,29,10:0
5远东的水质污染(上)DavidJ .H.Phillips Shinsuke Tanade 鲍建国 1991交通环保1991,13,5:0
6Fano Factor in Strained Graphene Nanoribbon Nanodevices显示文摘We investigate the Fano factor in a strained armchair and zigzag graphene nanoribbon nanodevice under the effect of ac fheld in a wide range of frequencies at different temperatures(10 K-70 K). This nanodevice is modeled as follows: a graphene nanoribbon is connected to two metallic leads. These two metallic leads operate as a source and a drain. The conducting substance is the gate electrode in this three-terminal nanodevice. Another metallic gate is used to govern the electrostatics and the switching of the graphene nanoribbon channel. The substances at the graphene nanoribbon/metal contact are controlled by the back gate. The photon-assisted tunneling probability is deduced by solving the Dirac eigenvalue differential equation in which the Fano factor is expressed in terms of this tunneling probability. The results show that for the investigated nanodevice, the Fano factor decreases as the frequency of the induced ac fheld increases, while it increases as the temperature increases.In general, the Fano factors for both strained armchair and zigzag graphene nanoribbons are different. This is due to the effect of the uniaxial strain. It is shown that the band structure parameters of graphene nanoribbons at the energy gap, the C-C bond length, the hopping integral, the Fermi energy and the width are modulated by uniaxial strain. This research gives us a promise of the present nanodevice being used for digital nanoelectronics and sensors.Walid Soliman Mina D.Asham Adel H.Phillips 2017Chinese Physics Letters2017,34,11:0
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