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铀矿地质 1998年第2期14卷 122-126页

作者： Visiting group to usa,written by Huang Xianfang

Static Theory for Planar Ferromagnets and Antiferromagnets

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Acta Mathematica Sinica,English Series 2001年第4期17卷 541-580页

作者： Feng Bo HANG Fang Hua LIN Courant Institute, 251 Mercer Street. New York. NY 10012, usa Dept. of Math, Princeton University, Fine Hall. Washington Road, Princeton, NJ 08544 usa. Courant Institute New York USA

Here we generalize the "BBH"-asymptotic analysis to a simplified mathematical model for tho planar ferromaguets and antiferromagnets. To develop such a static theory is a necessary step for a rigorous mathematical jus... 详细信息

关键词： Ginzburg-Landau-type equations Vortices Minimizing harmonic maps Gradient cstimate Radial solutions Stability Quantization

Aggregation and assembly of crescent foldamers

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Science China Chemistry 2010年第1期53卷 45-51页

作者： GONG Bing Department of Chemistry,University at Buffalo,The State University of New York,Buffalo,New York 14260,usa 1. Department of Chemistry University at Buffalo The State University of New York Buffalo New York 14260 USA

Recent studies have started to provide initial insights into the aggregation and assembly of two classes of back-rigidified foldamers with flat,curved backbones consisting of aromatic *** their persistent shape that presents large,well-defined aromatic surface areas,these crescent foldamers were found to undergo size-dependent aggregation in solution and pack into 1D assemblies in the solid *** aromatic oligoamides undergo stacking interactions not only in polar solvents but also in nonpolar ones,a unique property that is not associated with many other molecules that associate via π-π stacking *** stacking of oligo(m-phenylene ethynylenes) is similar to aromatic hydrocarbons,being promoted in polar solvents such as methanol while being discouraged in nonpolar solvents such as *** ready synthetic availability of crescent foldamers makes it possible to directly control the intermolecular interaction by tuning surface ***,the columnar assembly of these cavity-containing molecules provides a new strategy for constructing supramolecular nanotubular structures.

关键词： foldamer folding hydrogen bond π-π stacking aggregation assembly

OPTIMAL HIERARCHY STRUCTURES FOR MULTI-ATTRIBUTE-CRITERIA DECISIONS

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Journal of Systems Science & Complexity 2009年第2期22卷 228-242页

作者： Stan LIPOVETSKY GfK Custom Research North America

A problem of a hierarchy structure optimization is *** structures arewidely used in the Analytic Hierarchy Process,conjoint analysis,and various other methods of multiplecriteria decision *** problem consists in finding a structure that needs a minimum number ofpair comparisons for a given total number of the *** an optimal hierarchy,the minimumefforts are needed for eliciting data and synthesizing the local preferences across the hierarchy to getthe global priorities or *** estimation techniques are developed and numerical *** and numerical results suggest optimal ways of priority evaluations for practicalmanagerial decisions in a complex environment.

关键词： Analytic Hierarchy Process conjoint analysis hierarchy optimization pair comparisons.

SHIP HYDRODYNAMICS BASIC RESEARCH IN THE UNITED STATES

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Journal of Hydrodynamics 1995年第4期7卷 22-34页

作者： Edwin P. Rood(Mechanics and Engergy Conversion (333), Office of Naval Research Arlington VA 22217 usa) Office of Naval Research Arlington Arlington United States

An overview of basic research on ship hydrodynamics in the United States ispresented. The focus is on leading edge research of high scientific interest bUt with ship hydrodynamics applicability. The research topic areas are briefly discussed, representative highlights from recent research are presented, and scientific hurdles to improved ship hydrodynamics technology are delineated. The purpose of the paper is to stimulate international cooperation in solving the basic research problems of common interest to all hydrodynamicists.

关键词： ship performance ship hydrodynamics computational fluid dynamics

Characteristics of lateral heterogeneities with thermal and chemical origins in the pyrolitic lower mantle

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Progress in Natural Science:Materials International 2009年第11期19卷 1603-1611页

作者： Baosheng Li~* Mineral Physics Institute,Stony Brook University,Stony Brook,NY 11794,usa [a]Mineral Physics Institute Stony Brook University Stony Brook NY 11794 USA

The relative changes between shear and compressional velocities(RSP=(?)ln VS/(?) ln VP),bulk sound and shear velocities (RCS=(?) ln VC/(?) ln VS),and density versus shear wave velocity(RρS=(?) lnρ/(?) ln VS) in response to thermal and chemical variations were investigated for the pyrolitic lower *** heterogeneities with thermal origins,RSPincreases from 1.7 to 2.0 together with RρSdecreasing from 0.4 to 0.2 and RCS=～0.27 from the top to the bottom of the lower *** comparison,chemical variations (bulk iron or silica contents) are characterized by RSP0.5 at lower mantle *** values of RρSand RCSare indicative of chemical anomalies in the lower mantle,but a combination of thermal and chemical heterogeneities may be required to produce velocity and density anomalies at the magnitudes observed in seismic *** refinement of these characteristics requires data on the higher order pressure and temperature derivatives of the elastic moduli of the constituent phases.

关键词： Lower mantle Lateral heterogeneity Elasticity Pyrolite

Signal transduction mediated by Bid, a pro-death Bcl-2 family proteins, connects the death receptor and mitochondria apoptosis pathways

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Cell Research 2000年第3期10卷 161-167页

作者： YIN XIAO-MING (Department of Pathology, University of Pittsburgh School of Medicine, 3550 Terrace Street, Pittsburgh, PA 15261, usa) DepartmentofPathology UniversityofPittsburghSchoolofMedicinePA15261USA.xmyin@pitt.edu

Two major apoptosis pathways have been defined in mammalian cells, the Fas/TNF-R1 death receptor pathway and the mitochondria pathway. The Bcl-2 family proteins consist of both anti-apoptosis and pro- apoptosis members that regulate apoptosis, mainly by controlling the release of cytochrome c and other mitochondrial apoptotic events. However, death signals mediated by Fas/TNF-R1 receptors can usually activate caspases directly, bypassing the need for mitochondria and escaping the regulation by Bcl-2 family proteins. Bid is a novel pro-apoptosis Bcl-2 family protein that is activated by caspase 8 in response to Fas/TNF-R1 death receptor signals. Activated Bid is translocated to mitochondria and induces cytochrome c release, which in turn activates downstream caspases. Such a connection between the two apoptosis pathways could be important for induction of apoptosis in certain types of cells and responsible for the pathogenesis of a number of human diseases.

关键词： Apoptosis Bcl-2 family proteins Bid Fas TNF.

Quasisymmetric property for conjugacies between Anosov diffeomorphisms of the two-torus

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Science China Mathematics 2010年第3期53卷 663-670页

作者： HU HuYi 1 & JIANG YunPing 2, 1 Department of Mathematics, Michigan State University, East Lansing, MI 48824, usa 2 Department of Mathematics, the Graduate Center and Queens College of CUNY, Flushing, NY 11367, usa 1. Department of Mathematics Michigan State University East Lansing MI 48824 USA2. Department of Mathematics the Graduate Center and Queens College of CUNY Flushing NY 11367 USA

We prove that the restrictions of the conjugacy between two Anosov diffeomorphisms of the twotorus to the stable and unstable manifolds are quasisymmetric homeomorphisms.

关键词： quasisymmetry Anosov diffeomorphisms conjugacy Hlder condition Markov partition

Studies of mineral properties at mantle condition using Deformation multi-anvil apparatus

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Progress in Natural Science:Materials International 2009年第11期19卷 1467-1475页

作者： Li Li MPI,Department of Geosciences,Stony Brook University,Stony Brook,NY 11794,usa [a]MPI Department of Geosciences Stony Brook University Stony Brook NY 11794 USA

This paper reports recent studies of the rheological and viscoelastic properties of minerals at mantle pressure and temperature using Deformation multi-anvil apparatus(D-DIA).Stress-strain-time relations were measured using synchrotron X-ray radiation to determine these *** properties of San Carlos olivine were measured at pressure up to 10 GPa and indicated that the effect of pressure on the viscosity of olivine is much smaller than previous *** unique capability of synchrotron X-ray can resolve the stress heterogeneity within a polycrystalline material as well as within a multi-phase mixture and elucidate the stress-strain distribution in an *** measurements were carried out using olivine as the sample at mantle pressure and *** results showed that grain boundary activity rather than pressure dominate the relaxation *** aim of this paper is to illustrate the methods using new tools for high pressure research.

关键词： High pressure Synchrotron X-ray Multi-anvil Plasticity Anelasticity

The RAF family: an expanding network of post-translational controls and protein-protein interactions

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Cell Research 1998年第2期8卷 81-98页

作者： YURYEV ANTON LAWRENCE P WENNOGLE (Novartis Pharmaceuticals Corporation, Summit, NJ, usa ) Novartis Pharmaceuticals Corporation Summit NJ USA

Protein kinase RAF is strategically located in the "Ras - MAP-kinase signal transduction pathway". a principle system which transmits signals from growth factor receptors to the nucleus, resulting in cell *** factor responses are mediated in part by activation of Ras, which in turn activates RAF to phosphorylate MEK, its downstream substrate. MEK activates MAPkinase to influence nuclear events. It is clear, however,that a network of signals other than those carried by Ras plays a role in RAF regulation. These orthogonal influences are mediated by: serine/threonifle kinases, tyrosine kinases, and protein - protein interactions. As a further complication to the RAF network, three isoforms of RAF have been established which have divergent N-terminal regulatory domains. Whereas these divergent regulatory domains implicate isoform-specific functions, no clear evidence or hypothesis for distinct functions for individual isoforms has been presented. Recently, "isoform-specific protein interactions" have been identified among numerous proteins interacting with RAF. These studies may serve to delineate independent functions for RAF isoforms.

关键词： an expanding network of post-translational controls and protein-protein interactions The RAF family Cell