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可溶性聚酰亚胺的热分解

中国科学（B辑） 1999年第4期29卷 319-326页

作者：黄俐研史 金熹高 z.q.wu F.M.Li S.z.D.Cheng 中国科学院化学研究所北京100080 MauriceMortonInstituteandDepartmentofPolymerScience

用高分辨裂解气相色谱质谱 (HRPyGC MS)研究了两种可溶性聚酰亚胺的热分解行为 ,考察了相应裂解产物的组成、分布及其与高分子结构的关系 ,并用热重法 (TG)测定了它们的热分解反应动力学参数。

关键词：聚酰亚胺热分解气相色谱质谱热重法可溶性

Stark-broadened profiles of the spectral lines in He Ⅱ ions

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Stark-broadened profiles of the spectral lines in He Ⅱ ions

Chuan qiong qin(Ligustiazine)from Ligusticum wallichii Frangchat inhibits platelet aggregation induced by adrenaline

第六届全国计算原子与分子物理学术会议

作者： B.Duan M.A.Bari z.q.wu J.Yan J.G.Wang Institute of Applied Physics and Computational Mathematics Pakistan Atomic Energy Commission

This paper introduces a theoretical approach for the calculations of spectral line broadening in plasmas. As an example, the line profiles of Stark broadening the Lyman pectral lines（ Lyα and Lyβ） and Paschen line（Pα） are calculated and investigated with this approach under some interesting plasma conditions. In our calculations, Dirac R-matrix methods [1]are used to calculate electron-impact broadening operators[2-6], which are assumed to be diagonal matrix to simplify. The Standard（Hooper） theory is chosen to calculate the electric microfield distribution function. Furthermore the population density（bm） of ionization state m is obtained by the Boltzmann-Saha equations. The dipole matrix and the required atomic structure data are calculated by the atomic structure GRASP package. Thus Stark-broadened line profiles of the Lyman spectral lines and P α in He II ion are computed in a systematic manner[7,8]. These spectral line-broadening parameters are considerably important for plasma spectroscopy and plasma diagnosis as well as a key stone in plasma modeling.

关键词： Stark broadening line shapes atomic data

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Chuan Qiong Qin(Ligustiazine)from Ligusticum wallichii Frang...

A Structural Model for C60 on Metal Surfaces

2000上海科技论坛BIO-X研讨会暨中德医学生物物理和上海流变学研讨会

作者： FK Yang z.q.wu J.F.zhou G.M.Artmann Y.D.Shi Department of Biophysics Shanghai Medical UniversityShanghai200032China Department of Cell Biophysics Fachhochschule Aachen-JuelichGensterweg 152428Germany

quan qiong qin (Cqq) is a plant which grows in China and whose Latin name is Ligusticum wallichiiFrangchat. Chinese traditional medicine recognizes it to be one of “activating the blood and relieving thestasis drugs”.Modern medicine confirms the it promotes microcirculation. Cqq is a pure chemical whichwas extracted from the plant roots and in China the pure chemibal can be synthesized in laboratory. Thechemical can cure coronary heart diseases and cerebral vascular diseases. This paper studies the effects ofthe chemical on platelet aggregation induced by adrenaline. The following results were obtained: (1) In 15cases of hypertension,under the action of 800 ug/ml of the chemical. platelet aggregation induced with 20

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电子显微学报 1997年第4期 129-130页

作者： D.Liu 1,2 \ \ J.L.Yang 1\ \ z.q.wu 1\ \ J.G.Hou 1 (1 Structure Research Laboratory and Fundamental Physics Center University of Science and Technology of China,Hefei,Anhui 230026,P.R.China) (2 College of Science and Engineering,Hainan University,Ha

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ＡＳｔｒｕｃｔｕｒａｌＭｏｄｅｌｆｏｒＣ６０ｏｎＭｅｔａｌＳｕｒｆａｃｅｓＤ．Ｌｉｕ１，２Ｊ．Ｌ．Ｙａｎｇ１Ｚ．Ｑ．Ｗｕ１Ｊ．Ｇ．Ｈｏｕ１（１ＳｔｒｕｃｔｕｒｅＲｅｓｅａｒｃｈＬａｂｏｒａｔｏｒｙａｎｄＦｕｎｄａｍｅｎｔａｌＰｈｙｓｉｃｓＣｅｎｔｅｒ...

关键词： Surfaces Model Structural Metal

A Structural Model for C60 on Metal Surfaces

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A Structural Model for C60 on Metal Surfaces

Probing the Bardeen-Kiselev black hole with the cosmological constant caused by Einstein equations coupled with nonlinear electrodynamics using quasinormal modes and greybody bounds

1996年中国青年学者物理学讨论会

作者： D.Liu~(1,2) J.L.Yang~1 z.q.wu~1 J.G.Hou~1 1 Structure Research Laboratory and Fundamental Physics Center University of Science and Technology of China,Hefei,Anhui 230026,P.R.China 2 College of Science and Engineering,Hainan University,Haikou,Hainan 570228,P.R.China

The C/metal interracial system is simplified by using CH to replace C molecule and 10 metal atoms to represent substrates with a proper adsorption *** electron properties,such as the adsorption height,adsorption energy and charge transfer between the adsorbate and substrate,could be calcuated and studied by using this structural model.

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Communications in Theoretical Physics 2024年第6期76卷 102-119页

作者： S R wu B q Wang z W Long College of Physics Guizhou UniversityGuiyang 550025China College Pharmacy Guizhou University of Traditional Chinese MedicineGuiyang 550025China

In this work,we investigate a static and spherically symmetric Bardeen-Kiselev black hole(BH)with the cosmological constant,which is a solution of the Einstein-non-linear Maxwell field *** compute the quasinormal frequencies for the Bardeen-Kiselev BH with the cosmological constant due to electromagnetic and gravitational *** varying the BH parameters,we discuss the behavior of both real and imaginary parts of the BH quasinormal frequencies and compare these frequencies with the Reissner-Nordström-de Sitter BH surrounded by quintessence(RN-dSq).Interestingly,it is shown that the responses of the Bardeen-Kiselev BH with the cosmological constant and the RN-dSq under electromagnetic perturbations are different when the charge parameter q,the state parameter w and the normalization factor c are varied;however,for the gravitational perturbations,the responses of the Bardeen-Kiselev BH with the cosmological constant and the RN-dSq are different only when the charge parameter q is ***,compared with the gravitational perturbations,the electromagnetic perturbations can be used to understand nonlinear and linear electromagnetic fields in curved spacetime *** interesting observation is that,due to the presence of Kiselev quintessence,the electromagnetic perturbations around the Bardeen-Kiselev BH with the cosmological constant damps faster and oscillates slowly;for the gravitational perturbations,the quasinormal mode decays slowly and oscillates *** also study the reflection and transmission coefficients along with the absorption cross section in the Bardeen-Kiselev BH with the cosmological constant;it is shown that the transmission coefficients will increase due to the presence of Kiselev quintessence.

关键词： quasinormal modes greybody factors Bardeen-Kiselev black hole with cosmological constant

The Novel Mechanical Property of Tongue of a Woodpecker

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Journal of Bionic Engineering 2009年第3期6卷 214-218页

作者： P zhou X q Kong C W wu z Chen National Key Laboratory for Structural Analysis of Industrial Equipment Dalian University of Technology Department of Civil and Environmental Engineering University of Missouri

Biomaterials such as bone,teeth,nacre and silk are known to have superior mechanical properties due to their specific nanocomposite *** we report that the woodpecker's tongue exhibits a novel strength and flexibility due to its special composite micro/*** tongue consists of a flexible cartilage-and-bone skeleton covered with a thin layer tissue of high strength and *** the interface between the cartilage-and-bone skeleton and the tissue layer,there is a hierarchical fiber-typed *** is this special design of the tongue that makes the woodpeckers efficient in catching the insects inside *** special micro/nanostructures of the woodpecker's tongue show us a potential method to enhance the interfacial connection between soft and hard material layers for bio-inspired composite system designs.

关键词： woodpeckcr hyoid cartllage multilevel structure tensile strength

A new model for the expansion tube considering the stress coupling:Theory,experiments and simulations

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Defence Technology（防务技术） 2022年第7期18卷 1190-1204页

作者： M.z.wu X.W.zhang q.M.zhang State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyHaidian DistrictBeijing10081China

Based on the two-arc profile assumption,the expansion deformation and energy absorption of circular tubes compressed by conical-cylindrical dies were ***,the deformation of the two arcs was analyzed independently and an improved model denoted as Model-I was ***,by further involving the coupling between the bending moment and membrane forces,a more elaborate model,i.e.,Model-II was ***,experiments and simulations were conducted to verify the models,which show that,compared with previous theoretical models,Model-II could not only capture the prominent features of the deformation,but also improve the prediction accuracy of the steady driving force *** means of this model,it was found that the critical semi-conical angle,which makes the driving force minimum,increases with the increase of the friction coefficient,expansion ratio as well as the radius/thickness ratio of the ***,the energy dissipation due to stretching is always greater than that of bending,while the friction dissipation can account for the largest proportion at small semi-conical angle or large friction *** a certain friction and die conditions,the specific energy absorption of expanded tubes can be much higher than that under progressive collapse mode.

关键词： Expansion Circular tube Stress coupling Strain hardening Energy absorption

Designing metallic glasses with optimal combinations of glass-forming ability and mechanical properties

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Journal of Materials Science & Technology 2021年第8期67卷 254-264页

作者： S.J.wu z.q.Liu R.T.qu z.F.zhang Laboratory of Fatigue and Fracture for Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaHefei 230026China

It is a long-standing challenge to search for metallic glasses(MGs)with optimal combinations of glassforming ability(GFA),strength and toughness in the vast compositional *** taking into account both recently developed ellipse criterion and temperature-based GFA criterion,here we established quantitative correlations among compositions,elastic constants,GFA and mechanical properties of MGs,which enable to predict the GFA,fracture strength and fracture surface simultaneously in advance once the compositions of MGs are *** data confirm the validity of this approach in ***,a strategy for designing MGs with optimal combinations of strength,toughness and GFA is proposed,which allows for high-throughput discovering glass formers with excellent mechanical properties.

关键词： Metallic glass Composition Elastic constant Mechanical property Glass-forming ability