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Chinese Journal of Polymer Science 2013年第2期31卷 242-250页

作者： h.h. Abdel-Razik b.h. Asghar E. Kenawy Chemistry Department Faculty of Science Mansoura University Chemistry Department Faculty of Science Taif University Chemistry Department Faculty of Applied Sciences Umm Al-Qura University Chemistry Department Polymer Research Group Faculty of Science Tanta University

Chloranil through condensation reaction with vicinal diamine such as diaminomaleonitrile produced heterocyclic monomer, p-benzoquinonebis[2,3-b; 2＇,3＇-b＇]pyrazine-5,6-dinitrile. The tetranitrile monomer was cyclo-tetramerised using lithium/pentanol and acetic acid affording the corresponding tetrap-benzoquinone bis[2,3-b; 2＇,3＇-b＇]pyrazinoporphyrazine）]- based network polymer （2h-Pz）. The tetranitril monomer was cyclo-tetramerised using metal salt and quinoline affording the corresponding porphyrazinato-metal II-based network polymers （M-Pz）, M = Co, Ni or Cu. Elemental analytical results, IR and NMR spectral data of the prepared molecules are consistent with their assigned formulations. Molecular masses and metal contents of the synthesized polymers proved to be of high molecular masses which confirm the efficiency of tetramerization polymerization and complexation reactions. The prepared pyrazinoporphyrazines were used as efficient catalysts for the oxidation of thiophenol and benzylthiol to their disulfides in the presence of air atmosphere. The results of oxidation of thiophenol and benzylthiol show that after 15 min the maximum yield of the corresponding disulfides reached 95%, 91%, respectively.

关键词： Pyrazinoporphyrazine Polymer-supported metal (II)-based catalysts Chloranil.

hydroclimatological data and analyses from a headwaters region of Mongolia as boundary objects in interdisciplinary climate change research

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Frontiers of Earth Science 2017年第3期11卷 457-468页

作者： N.b.h. VENAbLE ESS-Watershed Science Colorado State University Fort Collins CO 80523-1476 USA

Collaborative work on increasingly complex hydroclimatic investigations often crosses disciplinary boundaries. Elements of scientific inquiry, such as data or the results of analyses can become objectified, or capable of being adopted and/or adapted by users from multiple disciplinary realms. These objects often provide a bridge for collaborative endeavors, or are used as tools by individuals pursuing multi-disciplinary work. boundary object terminology was first formalized and applied by social scientists. however, few examples of the application of this useful framework are found in the hydrologic literature. The construct is applied here to identify and discuss how common researcb products and processes are used both internally and externally through providing examples from a project examining the historical and paleo proxy-based hydroclimatology of a headwaters region of Mongolia. The boundary object concept is valuable to consider when conducting and critiquing basic research, collaborating across multiple disciplinary teams as when studying climate change issues, as an individual researcher working in a cross boundary sense using methods from differing disciplines to answer questions, and/or when one group adapts the work of another to their own research problems or interpretive needs, as occurred with selected products of this project.

关键词： Mongolia boundary objects climate change,hydroclimate

bound state solutions of the Dirac equation with the Deng–Fan potential including a Coulomb tensor interaction

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Chinese Physics b 2014年第3期23卷 123-130页

作者： S.Ortakaya h.hassanabadi b.h.Yazarloo Institute of Natural and Applied Sciences Erciyes University Department of basic Sciences Shahrood Branch Islamic Azad University

Approximate analytical solutions of the Dirac equation in the case of pseudospin and spin symmetry limits are inves- tigated under the Deng-Fan potential by applying the asymptotic iteration method for the arbitrary quantum numbers n and ~~. Some of the numerical results are also represented in both pseudospin symmetry and spin symmetry limits.

关键词： Dirac equation Deng-Fan potential pseudospin and spin symmetries tensor interaction

Exploring bouncing cosmologies with cosmological surveys

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Science China(Physics,Mechanics & Astronomy) 2014年第8期57卷 1414-1430页

作者： cai Yi-Fu Department of Physics McGill UniversityMontréal QC H3A 2T8 Canada

From recent observational data two significant directions have been made in the field of theoretical cosmology recently. First, we are now able to make use of present observations, such as the Planck and bICEP2 data, to examine theoretical predictions from the standard inflationary ACDM which were made decades of years ago. Second, we can search for new cosmological signatures as a way to explore physics beyond the standard cosmic paradigm. In particular, a subset of early universe models admit a nonsingular bouncing solution that attempts to address the issue of the big bang singularity. These models have achieved a series of considerable developments in recent years, in particular in their perturbative frameworks, which made brand-new predictions of cosmological signatures that could be visible in current and forthcoming observations. herein we present two representative paradigms of early universe physics. The first is the reputed new matter （or matter-ekpyrotic） bounce scenario in which the universe starts with a matter-dominated contraction phase and transitions into an ekpyrotic phase. In the setting of this paradigm, we have proposed some possible mechanisms of generating a red tilt for primordial curvature perturbations and confront the general predictions with recent cosmological observations. The second is the matter-bounce inflation scenario which can be viewed as an extension of inflationary cosmology with a matter contraction before inflation. We present a class of possible model constructions and review the implications on the current CMb experiments. Lastly a review of significant achievements of these paradigms beyond the inflationary ACDM model is made, which is expected to shed new light on the future direction of observational cosmology.

关键词： bouncing cosmology big bang singularity CMb observations

Functional sample path properties of subsequence's C-R increments for a Wiener process in hlder norm

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Applied Mathematics(A Journal of Chinese Universities) 2015年第2期30卷 217-226页

作者： WEI Qi-cai School of Mathematics & Computer Science Wuhan Polytechnic University

In this paper, with the aid of large deviation formulas established in strong topology of functional space generated by hSlder norm, we discuss the functional sample path properties of subsequence＇s C-R increments for a Wiener process in hSlder norm. The obtained results, generalize the corresponding results of Chen and the classic Strassen＇s law of iterated logarithm for a Wiener process.

关键词： Wiener process subsequence's C-R increments hSlder norm.

The berry-Esseen bound for identically distributed random variables by Stein method

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Applied Mathematics(A Journal of Chinese Universities) 2012年第4期27卷 455-461页

作者： cai Guang-hui Department of Mathematics Zhejiang Gongshang UniversityHangzhou 310018China

In this paper, we obtain the berry-Esseen bound for identically distributed random variables by Stein method. The results obtained generalize the results of Shao and Su （2006） and Stein （1986）.

关键词： berry-Esseen bound Stein method exchangeable pair.

Functional Limit Theorems for C-R Increments of lp-Valued Wiener Processes in the Norm

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Acta Mathematica Sinica,English Series 2005年第3期21卷 517-532页

作者： Qi cai WEI Department of Mathematics Huazhong University of Science & Technology Wuhan 430074 P. R. China Department of Mathematics & Physics Wuhan Polytechnic University Wuhan 430023 P. R. China

In this paper, based on accurately large deviation formulae established in strong topology generated by the holder norm for l^2-valued Wiener processes, we obtain the functional limit theorems for C-R increments of l^... 详细信息

关键词： Large deviations C-R increments l^p-valued Wiener processes holder norm

Relativistic bound and Scattering Amplitude of Spinless Particles in Modified Schioberg Plus Manning–Rosen Potentials

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Communications in Theoretical Physics 2017年第1期67卷 71-75页

作者： b.h.Yazarloo h.Mehraban Physics Department Semnan UniversityP.O.Box 35195-363SemnanIran

by using an approximation for the centrifugal term, we study relativistic bound and scattering states of spin-zero particles in the presence of equal scalar and vector modified Schioberg plus Manning–Rosen potentials for any quantum numbers n and l. Energy eigenvalues and the scattering amplitude are calculated. Some special cases of the problem are also investigated.

关键词： modified Schioberg plus Manning–Rosen potentials Klein–Gordon equation bound state scattering state scattering amplitude

Exact solutions of the Spinless-Salpeter equation under Kink-Like potential

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Chinese Physics C 2013年第12期37卷 13-16页

作者： h.hassanabadi b.h.Yazarloo Department of basic Sciences Shahrood Branch Islamic Azad University

The exact solution of Spinless-Salpeter equation(SSE)in the presence of Kink-Like potential is *** using the basic concepts of the supersymmetric quantum mechanics(SUSYQM)formalism and the functional analysis method,we have obtained the bound state solutions in the closed form and the eigenfunctions of the system are reported in the term of hypergeometric *** have also reported some numerical results.

关键词： Spinless-Salpeter equation SUSYQM Method functional analysis method Kink-Like potential

Composition and size dependent torsion fracture of metallic glasses

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Journal of Materials Science & Technology 2021年第23期82卷 153-160页

作者： J.Dong J.Shen Y.h.Sun h.b.Ke b.A.Sun W.h.Wang h.Y.bai Institute of Physics Chinese Academy of SciencesBeijing100190PR China College of Materials Science and Opto Electronic Technology University of Chinese Academy of SciencesBeijing100049PR China Songshan Lake Materials Laboratory DongguanGuangdong523808PR China

The fracture of metallic glasses(MGs)of different compositions and sizes down to micrometers under torsion loading were systematically *** to the flat shear fracture along the circumferential plane as commonly supposed under torsion,we find that the torsion fracture of metallic glasses can deviate from flat shear plane,and the fracture angle is closely dependent on the composition and the size of MG *** a conversion method,we show that the torsion fracture of both millimeterand micrometer-sized MGs can be described by the ellipse fracture criterion as originally proposed for the tension *** deviation from the circumferential shear plane under torsion is further shown to intrinsically relate to the fracture toughness of *** tougher MG tends to have a smaller fracture angle with respect to the maximum shear plane,and vice versa,indicating a correlation between the fracture toughness and pressure/normal stress sensitivity in *** results provide new insights on the fracture mechanism and are helpful to design and control the deformation and fracture behavior of MGs under torsion loading.

关键词： Metallic glasses Torsion fracture Pressure sensitivity Fracture toughness