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Search Results: 1 - 10 of 61855 matches for " Jian-Hua Tang "
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Nuclear dependences of azimuthal asymmetries in the Drell-Yan process
Long Chen,Jian-hua Gao,Zuo-tang Liang
Physics , 2013, DOI: 10.1103/PhysRevC.89.035204
Abstract: We study nuclear dependences of azimuthal asymmetries in the Drell-Yan lepton pair production in nucleon-nucleus collisions with polarized nucleons.We use the "maximal two-gluon correlation approximation", so that we can relate the transverse momentum dependent quark distribution in a nucleus to that in a nucleon by a convolution with a Gaussian broadening.We use the Gaussian ansatz for the transverse momentum dependence of such quark distribution functions,and obtain the numerical results for the nuclear dependences.These results show that the averaged azimuthal asymmetries are suppressed.
Bis[μ-N′-(2-oxidobenzylidene)thiophene-2-carbohydrazidato]bis[dimethanolnickel(II)]
Jian-Hua Ma,Wen-Shi Wu,Xiao-Qing Zhang,Sheng-Jiao Tang
Acta Crystallographica Section E , 2011, DOI: 10.1107/s160053681102143x
Abstract: In the crystal structure of the centrosymmetric binuclear title complex, [Ni2(C12H8N2O2S)2(CH3OH)4], there are intermolecular O—H...O, O—H...N and O—H...S hydrogen bonds. These help to stabilize the structure and link the molecules, forming a three-dimensional network structure. The Ni2+ cation exists in a slightly distorted octahedral NiNO5 coordination environment. The thiophene rings are disordered over two equivalent conformations with occupancies of 0.881 (3) and 0.119 (3).
Protective effects of the calcium-channel blocker flunarizine on crush injury of sciatic nerves in a rat model
Su Jian-Hua,Chen Yu-Fang,Tang Jin-Rong,Wu Le
Neurology India , 2010,
Abstract: Background : Neural damage can be mitigated by calcium-channel blockers (CCBs). However, the mechanism of action of CCBs is not yet fully understood. Objective : To investigate the mechanism of action and efficacy of CCB, flunarizine in restoring neural function after crush injury to the nerves Materials and Methods : The sciatic nerves of rats were crushed using pincers to establish the model for crush injury. Two hundred and eighty-eight Sprague-Dawley (SD) rats were randomly divided into sham-operated, saline, and low-dose flunarizine and high-dose flunarizine (FI and FII) groups. The expression of the protein c-fos in the dorsal root ganglia (DRG) after crush injury to the sciatic nerves was investigated by using reverse transcription-polymerase chain reaction (RT-PCR) and Western blot. The effect of flunarizine on c-fos expression and its efficacy in restoring neural function was evaluated. Results : The c-fos messenger ribonucleic acid (mRNA) and protein expression in FI and FII groups was significantly lower than in the saline group and was the least in the FII group. Nerve-conduction velocity was increased in the order of: saline < FI< FII< sham-operated. There was no significant difference in the nerve-conduction velocity in the sham-operated and FII groups (P>.05). Conclusions : When administered after crush injury to peripheral nerves, flunarizine may protect neurons with lesions from further damage and improve neural function by downregulating c-fos expression.
Twist-4 contributions to the azimuthal asymmetry in SIDIS
Yu-kun Song,Jian-hua Gao,Zuo-tang Liang,Xin-Nian Wang
Physics , 2010, DOI: 10.1103/PhysRevD.83.054010
Abstract: We calculate the differential cross section for the unpolarized semi-inclusive deeply inelastic scattering (SIDIS) process $e^-+N \to e^-+q+X$ in leading order (LO) of perturbative QCD and up to twist-4 in power corrections and study in particular the azimuthal asymmetry $$. The final results are expressed in terms of transverse momentum dependent (TMD) parton matrix elements of the target nucleon up to twist-4. %Under the maximal two-gluon correlation approximation, these TMD parton matrix elements in a nucleus %can be expressed terms of a Gaussian convolution of that in a nucleon with the width given by the jet transport %parameter inside cold nuclei. We also apply it to $e^-+A \to e^-+q+X$ and illustrate numerically the nuclear dependence of the azimuthal asymmetry $$ by using a Gaussian ansatz for the TMD parton matrix elements.
Azimuthal asymmetries in semi-inclusive DIS with polarized beam and/or target and their nuclear dependences
Yu-kun Song,Jian-hua Gao,Zuo-tang Liang,Xin-Nian Wang
Physics , 2013, DOI: 10.1103/PhysRevD.89.014005
Abstract: Using the formalism obtained from collinear expansion, we calculate the differential cross section and azimuthal asymmetries in semi-inclusive deeply inelastic lepton-nucleon (nucleus) scattering process $e^-+N (A) \to e^-+q+X$ with both polarized beam and polarized target up to twist-3. We derive the azimuthal asymmetries in terms of twist-3 parton correlation functions. We simplify the results by using the QCD equation of motion that leads to a set of relationships between different twist-3 functions. We further study the nuclear dependence of azimuthal asymmetries and show that they have similar suppression factors as those in the unpolarized reactions.
Tetrakis[1-phenyl-3-(1H-1,2,4-triazol-1-yl)propan-1-one-κN4]bis(thiocyanato-κN)nickel(II)
Jian-Hua Guo
Acta Crystallographica Section E , 2010, DOI: 10.1107/s1600536810049081
Abstract: In the centrosymmetric mononuclear title complex, [Ni(NCS)2(C11H11N3O)4], the NiII atom, located on an inversion centre, is hexacoordinated in a distorted octahedral geometry comprising four N atoms of four monodentate 1-phenyl-3-(1H-1,2,4-triazol-1-yl)propan-1-one ligands and two N atoms from thiocyanate anions.
Aqua(benzene-1,2-dicarboxylato-κO)bis[2-(1H-pyrazol-3-yl-κN2)pyridine-κN]cadmium(II)
Jian-Hua Guo
Acta Crystallographica Section E , 2010, DOI: 10.1107/s1600536810034616
Abstract: In the mononuclear title complex, [Cd(C8H4O4)(C8H7N3)2(H2O)], the CdII atom is six-coordinated in a distorted octahedral geometry by four N atoms from two bidentate chelating 2-(1H-pyrazol-3-yl)pyridine ligands, one O atom from a benzene-1,2-dicarboxylate ligand and one water molecule. The molecular structure features intramolecular O—H...O and N—H...O hydrogen bonds. In the crystal structure, the complex molecules are assembled into a two-dimensional supramolecular layer parallel to (011) via O—H...O and N—H...O hydrogen bonds and π–π stacking interactions between the pyridyl and pyrazole rings [centroid–centroid distances = 3.544 (2) and 3.722 (3) ].
Rights Protection of Nameless Body: Seeking Relief in the Lost —in the Aspect of Judicial Approach
Jian-hua HE
Cross-Cultural Communication , 2007, DOI: 10.3968/678
Abstract: Do correlated units have influences to require compensates for bodies whose identities can’t be proved? Not only jurisprudence and reality society separately holds different views, but also inside themselves, there are no common ideas. Likewise, the lack of consummation in legislation always leads one same case to opposite judgments in each local people’s court. First of all, through the jurisprudence analyses about the meaning of the civil rights of bodied whose identities can’t be proved, protection rules of civil right of bodies whose identities can’t be proved should be set up. Secondly, through the intensive analyses of present jurisprudence prescript, including limitation, protection rules should be nailed down. Thirdly, based on the present jurisprudence rules, author offers advise in details on the course of judgment in the way of protection of bodies’ civil rights. Key words: nameless body, civil rights, Judicial Protection Résumé: Les départements compétents ont-ils le droit de réclamer l’indemnité pour un cadavre inconnu ? Le milieu juridique et le milieu d’application exposent leur propre opinion, même à l’intérieur de chaque milieu, le débat ne se cesse pas. A cause de l’imperfection de la législation, les tribunaux populaires locaux n’ont pas une connaissance unanime sur cela et prennent des actions judicaires contraires. D’abord, à travers l’analyse juridique du contenu des droits civils du cadavre inconnu, l’auteur pense qu’il faut établir le système de protection des droits civils du cadavre inconnu. Ensuite, après l’étude des règlements légaux et de ses inconvénients, il est d’avis qu’on doit préciser juridiquement ce système de protection. Finalement, sur la base du système légal en vigueur et d’après le principe du droit civil, l’esprit de la législation civile et la fonction de guidage judicaire, il donne, en ce qui concerne les moyens de protection, des propositions concrètes sur le processus judicaire. Mots-clés: cadavre inconnu, droits civils, protection judicaire 摘要:相關部門有無權力為無名屍索賠 法學界、實務界各抒己見,就是法學界和實務界內部也爭論不休。由於立法的不完善,導致各地人民法院對其在認識上以及司法上的絕然相反。首先,本文通過對無名屍民事權利的內涵的法理分析,認為應設立無名屍民事權利保護制度。其次,通過對我國現行法律規定及其缺陷的透析,認為應從法律上明確無名屍民事權利的保護制度。再次,筆者在現行法律制度的基礎上,從民法的原 則、民事立法精神以及司法的引導功能,就我國對無名屍民事權利的保護途徑,從審判程式上提出了具體的 意見。 關鍵詞:無名屍;民事權利;司法保護
catena-Poly[[bis[3-(1H-imidazol-1-yl)-1-phenylpropan-1-one-κN3]nickel(II)]-μ-oxalato-κ4O1,O2:O1′,O2′]
Jian-Hua Guo
Acta Crystallographica Section E , 2011, DOI: 10.1107/s1600536811049646
Abstract: In the title compound, [Ni(C2O4)(C12H12N2O)2]n, the NiII atom, lying on a twofold rotation axis, is coordinated by two N atoms from two monodentate 3-(1H-imidazol-1-yl)-1-phenylpropan-1-one (L) ligands and four O atoms from two oxalate anions in a distorted octahedral geometry. The oxalate anion has a twofold rotation axis through the mid-point of the C—C bond and acts as a bridging ligand, linking the NiII atoms into a polymeric chain along [010]. Weak intermolecular C—H...O hydrogen bonds connect the chains, resulting in a three-dimensional supramolecular structure. >
Di-μ-acetato-κ4O:O-bis{(acetato-κ2O,O′)bis[3-(1H-imidazol-1-yl-κN3)-1-phenylpropan-1-one]cadmium} tetrahydrate
Jian-Hua Guo
Acta Crystallographica Section E , 2011, DOI: 10.1107/s1600536811050021
Abstract: In the molecular structure of the title neutral binuclear complex, [Cd2(C2H3O2)4(C12H12N2O)4]·4H2O, each CdII atom is six-coordinated and exhibits a distorted octahedral geometry. Three O atoms from two acetate ions and one monodentate 3-(1H-imidazol-1-yl-κN3)-1-phenylpropan-1-one (L) ligand form the equatorial plane, while the bridging-O atom forming the longer Cd—O distance,and the N atom of the second L ligand, forming the longer Cd—N distance, occupy axial positions with an N—Cd—O angle of 170.77 (7)°. Intermolecular O—H...O hydrogen bonds exist between the lattice water molecules and the acetate ions of adjacent molecules, resulting in a two-dimensional supramolecular structure.
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