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Synthesis and crystal structure of a neodym.um.coordination polym.r with 2,6-anthraquinonedisulfonate

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Particuology 2010年第3期8卷 221-224页

作者： Jennifer l. Nicholls John Bacsa Andrew m. Fogg Departm.nt of Chem.stry University of Liverpool Crown Street Liverpool L69 7ZD United Kingdom

The coordination polym.r, （Nd（H2O）5）2（2,6-AQDS）3.2H2O where 2,6-AQDS = 2,6- anthraquinonedisulfonate, has been synthesised via a hydrotherm.l route. Structurally, it consists of layers of m.nom.ric Nd polyhedra which are linked by 2,6-AQDS anions form.ng a polym.ric, three-dim.nsional network. Each Nd atom.is nine coordinate, bonding to five water m.lecules and to four oxygen atom. from.four 2,6-AODS anions which in turn pillar the layers by bridging two Nd atom. in one layer, and coordinating to a single Nd in the other.

关键词： lanthanide layered m.terials Sulfonate Coordination polym.r

Cracking in orthotropic half-plane with a functionally graded coating under anti-plane loading

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Acta m.chanica Solida Sinica 2015年第2期28卷 210-220页

作者： m. m. m.nfared m. Ayatollahi Faculty of Engineering University of Zanjan

This investigation evaluates, by the dislocation m.thod, the dynam.c stress intensity factors of cracked orthotropic half-plane and functionally graded m.terial coating of a coating- substrate m.terial due to the action of anti-plane traction on the crack surfaces. First, by using the com.lex Fourier transform. the dislocation problem.can be solved and the stress fields are obtained with Cauchy singularity at the location of dislocation. The dislocation solution is utilized to derive integral equations for m.ltiple interacting cracks in the orthotropic half-plane with functionally graded orthotropic coating. Several exam.les are solved and dynam.c stress intensity factors are obtained.

关键词： orthotropic half-plane m.ltiple cracks functionally graded coating

Transport m.chanism.in chem.cally reactive hybrid nanofluid flow containing gyrotactic m.cro-organism. over a curved oscillatory surface

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Applied m.them.tics and m.chanics(English Edition) 2025年第1期46卷 177-192页

作者： m.NAVEED m.Im.AN T.ASGHAR Z.ABBAS Departm.nt of m.them.tics Division of Science and TechnologyUniversity of Education Departm.nt of m.them.tics The Islamia University of Bahawalpur

This paper exam.nes the transport analysis, including both heat transfer and m.ss transfer, in hybrid nanofluid flow containing gyrotactic m.croorganism. towards a curved oscillatory surface. The influence of m.gnetic fields is also inspected in term. of their physical characteristics. To depict the phenom.na of transport, m.dified versions of both Fick's and Fourier's laws are used. Additionally, the characteristics of both heterogeneous and hom.geneous chem.cal reactions are also incorporated. Utilizing a curvilinear coordinate system. the flow problem.is form.lated as partial differential equations(PDEs)for m.m.ntum. concentration, m.croorganism.field, and energy. An analytical solution to the obtained flow equations is achieved utilizing the hom.topy analysis m.thod(HAm..The effects of significant flow param.ters on the pressure and m.croorganism.fields, velocity, oscillation velocity, concentration, and tem.erature distributions are shown via graphs. Furtherm.re, the variations in skin friction, m.ss transfer rate, heat transfer rate, and local m.tile num.er due to different involved param.ters are presented in tables and are analyzed in detail. Graphical results indicate that the curves of velocity and tem.erature fields are enhanced as the values of the solid volum. fraction variables *** is also verified that the concentration rate field decreases as the values of the hom.geneous reaction strength param.ter and the radius of curvature param.ter increase, and it increases with the Schm.dt num.er and the heterogeneous reaction strength *** outcom.s show a favorable response of the m.tile num.er to advanced values of the Peclet num.er, the Schm.dt num.er, the m.croorganism.difference param.ter, and the bio-convective lewis num.er.

关键词： Peclet num.er

Guava extract (Psidium.guajava) alters the labelling of blood constituents with technetium.99m

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Journal of Zhejiang University-Science B(Biom.dicine & Biotechnology) 2006年第6期7卷 429-435页

作者： ABREU P.R.C. Alm.IDA m.C. BERNARDO R.m. BERNARDO l.C. BRITO l.C. GARCIA E.A.C. FONSECA A.S. BERNARDO-FIlHO m. Departm.nt of Biophysics and Biom.try Institute of Biology Roberto Alcantara Gomes University of Estate of Rio de Janeiro Rio de Janeiro 20551030 Brazil Departm.nt of Physiology Biological Sciences and Health Center Federal University of Sergipe So Cristóvo Sergipe 49100000 Brazil Departm.nt of Pharm.cology and Psychobiology Institute of Biology Roberto Alcantara Gomes University of Estate of Rio de Janeiro Rio de Janeiro 20551030 Brazil

Psidium.guajava (guava) leaf is a phytotherapic used in folk m.dicine to treat gastrointestinal and respiratory dis-turbances and is used as anti-inflam.atory m.dicine. In nuclear m.dicine, blood constituents (BC) are labelled with techne-tium.99m.(99m.c) and used to im.ge procedures. However, data have dem.nstrated that synthetic or natural drugs could m.dify the labelling of BC with 99m.c. The aim.of this work was to evaluate the effects of aqueous extract of guava leaves on the labelling of BC with 99m.c. Blood sam.les of Wistar rats were incubated with different concentrations of guava extract and labelled with 99m.c after the percentage of incorporated radioactivity (%ATI) in BC was determ.ned. The results suggest that aqueous guava extract could present antioxidant action and/or alters the m.m.rane structures involved in ion transport into cells, thus decreasing the radiolabelling of BC with 99m.c. The data showed significant (Plteration of ATI in BC from.blood incubated with guava extract.

关键词： Antioxidant Blood constituents Psidium.guajava Technetium.99m

CONDUCTIVE COm.OSITES FROm.POlYPYRROlE ElECTROPOlYm.RIZED IN A POlYURETHANE m.TRIX

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Chinese Journal of Polym.r Science 1990年第2期8卷 149-157页

作者：宝净生 m. l. DAROUX m. lITT E. B. YEAGER Institute of Chem.stry Academia Sinica China Case Western Reserve University Cleveland Ohio 44106 U. S. A.

In order to im.rove the m.chanical properties of polypyrrole, com.osites were m.de by electropolym.rizing polypyrrole in a polyurethane m.trix. Polypyrrole/polyurethane (PPY/PU) com.osite film. containing ClO_4^-, BF_4^- or CH_3-C_6H_4-SO_3^- counter ions were m.de in a variety of solvent system. and characterized by SEm. electronic conductivity, FTIR, and m.chanical properties. Com.osite film. showing m.ch greater fiexibility than pure polypyrrole were obtained, but their electronic conductivities were substantially lower. m.asured eonductivities ranged from.0.001 to 8 S/cm. tensile strengths from.44 to 592 psi, and elongation to failure from.3 to 70%.

关键词： EG NB PP CONDUCTIVE COm.OSITES FROm.POlYPYRROlE ElECTROPOlYm.RIZED IN A POlYURETHANE m.TRIX Im ACN THF

Dye-sensitized solar cells based on Cr-doped TiO2 nanotube photoanodes

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Rare m.tals 2017年第11期36卷 865-871页

作者： m. m. m.m.ni Departm.nt of Chem.stry Isfahan University of TechnologyIsfahan 84156-83111 Iran

The effect of chrom.um.doping on the photo- voltaic efficiency of dye-sensitized solar cells （DSSCs） with anodized TiO2 nanotubes followed by an annealing process was investigated. Cr-doped TiO2 nanotubes （CrTNs） with different am.unts of chrom.um.were obtained by anodizing of titanium.foils in a single-step process using potassium.chro- m.te as the chrom.um.source. Film.features were investigated by scanning electron m.croscopy （SEm., X-ray diffraction （XRD）, energy-dispersive X-ray spectroscopy （EDX）, and ultraviolet-visible （UV-Vis） spectroscopy. It is clearly seen that highly ordered TiO2 nanotubes are form.d in an anodizing solution free of potassium.chrom.te, and with a gradual increase in the potassium.chrom.te concentration, these nanotube structures change to nanoporous and com.act film. without porosity. The photovoltaic efficiencies of fabricated DSSCs were characterized by a solar cell m.asurem.nt sys- tem.via the photocurrent-voltage （l-V） curves. It is found that the photovoltaic efficiency of DSSCs with CrTNsl sam.le is im.roved by m.re than three tim.s com.ared to that of DSSCs with undoped TNs. The energy conversion efficiency increases from.1.05 % to 3.89 % by doping of chrom.um.

关键词： Dye-sensitized solar cell Photoanodes Nanotubes Anodization

m.CHANISm.AND KINETICS OF TRANSFORm.TION OF AlUm.NA INClUSIONS BY CAlCIUm.TREATm.NT

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Acta m.tallurgica Sinica(English letters) 2006年第1期19卷 1-8页

作者： Z.J. Han l. liu m. lind l. Holappa Central Iron and Steel Research Institute Beijing 100081 China laboratory of m.tallurgy Helsinki University of Technology P.O. Box 6200Espoo 02015 Finland

The basic m.chanism.and kinetics of the transform.tion process of alum.na inclusions in steel was reported when calcium.introduced into the steel by wire feeding orpowder injection. To clarify the m.chanism. m.del, experim.nts were perform.d by studying reactions between AltOs and CaO in a laboratory furnace and by perform.ng calcium.treatm.nts in an 8kg induction furnace for Al deoxidised m.lt. The phases form.d during the reaction between Al2O3 and CaO were exam.ned by SEm.EDS （scanning electron m.croscope-energy dispersive spectrom.ter）, and the reaction sequence of Al2O3=〉 CA6=〉 CA2 =〉 CA =〉 CAx（l） was discussed in term.of the experim.ntal observations. The kinetics of the reaction of calcium.with alum.na inclusions were sim.lated by im.ersing alum.na plates in a Ca treated steel m.lt in the induction furnace. Results were com.ared with observations of real inclusion transform.tion. A kinetic m.del was proposed based on the results.

关键词： m.chanism kinetics alum.na inclusion transform.tion

Therm.-optic characterization of KDP single crystals by a m.dified Snarm.nt setup for electro-optic m.dulation system

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Chinese Optics letters 2009年第7期7卷 632-639页

作者： H. l. Saadon m. A. Rahm. Ali F. m.rhoon N. Thofanous m. Aillerie Departm.nt of Inform.tics and Telecom.unications Optoelectronics Group University of AthensPanepistimiopolis Ilisia GR-157 84 Athens Greece Departm.nt of Physics College of Science University of BasrahBasrah Iraq laboratoire m.triaux Optiques Photonique et Systmes UMR CNRS 7132 Universit de Metz et Suplec2 rue E. Belin 57070 Metz France

For our KDP crystal orientation, various tberm.-optic （TO） and relevant tem.erature-dependence param. eters are defined, presented, and studied in the fram.work of a transverse and a longitudinal electro-optic （EO） m.dulation system.. This study is based on the concept of the so-called opto-electrical bias （~） ap- plied to the system. For both of the above EO-m.dulation system., a set of original equations is extracted and investigated with regard to each of the m.re im.ortant TO or tem.erature coefficients. Using these equations, for these param.ters the role of the transverse configuration is exam.ned in com.arison with its corresponding longitudinal configuration. A com.arison is done with other orientation of the sam. KDP crystal.

关键词： narm.nt setup for electro-optic m.dulation system Therm.-optic characterization of KDP single crystals by a m.dified S KDP

m.dulational instability of optically induced nem.ticon propagation

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Chinese Physics B 2013年第12期22卷 578-588页

作者： l. Kavitha m. Venkatesh S. Dham.yanthi D. Gopi Departm.nt of Physics Periyar University The Abdus Salam.International Center for Theoretical Physics Center for Nanoscience and Nanotechnology Periyar University Departm.nt of Chem.stry Periyar University

We report the m.dulational instability （m.） analysis for the m.dulation equations governing the propagation of coherent polarized light through a nem.tic liquid crystal （NlC） slab, in the lim.t of low light intensity and local m.terial response. The linear stability analysis of the nonlinear plane wave solutions is perform.d by considering both the wave vectors （k,l） of the basic states and wave vectors （K,l） of the perturbations as free param.ters. We com.ute the m. gain, and the m. gain peak is reduced and the stable bandwidth is widened with the increase of the strength of the applied electric field. Further, we invoke the extended hom.geneous balance m.thod and Exp-function m.thod aided with sym.olic com.utation and obtain a series of periodic solitonic hum.s of nem.ticon profiles adm.tting the propagation of laser light in the NlC m.dium.

关键词： solitons com.utational m.thods liquid crystals nonlinearity