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Chinese Physics b 2017年第8期26卷 114-122页

作者： Tsogbayar Tsednee Danny l Yeager Department of Chemistry Texas A & M University College Station

The self-consistent Hartree-Fock equation for the He atom is solved using the pseudospectral method. The Feshbach- type autoionization resonance parameters for doubly excited 2s2, 3s2, and 4s2 IS states of He have been determined by adding a complex absorbing potential to the Hamiltonian. The Riss-Meyer iterative and Pad6 extrapolation methods are applied to obtain reliable values for the autoionization resonance parameters, which are compared to previous results in the literature.

关键词： self-consistent field Hartree-Fock equation helium autoionization pseudospectral method

Assembly and electrochemical testing of renewable carbon-based anodes in SIbs:A practical guide

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Journal of Energy Chemistry 2022年第12期75卷 457-477,I0012页

作者： Darío Alvira Daniel Antorán Joan JManyà Aragón Institute of Engineering Research(I3A) Thermochemical Processes GroupUniversity of ZaragozaEscuela Politécnica Superior22071 HuescaSpain

Sodium-ion batteries(SIbs)are considered as a promising candidate to replace lithium-ion batteries(lIbs)in large-scale energy storage *** sodium resources and similar working principles make this technology attractive to be implemented in the near ***,the development of high-performance carbon anodes is a focal point to the upcoming success of SIbs in terms of power density,cycling stability,and *** knowledge in electrochemical and physicochemical techniques is required to properly evaluate the anode performance and move it in the right *** review aims at providing a comprehensive guideline to help researchers from different backgrounds(e.g.,nanomaterials and thermochemistry)to delve into this *** main components,lab configurations,procedures,and working principles of SIbs are ***,a detailed description of the most used electrochemical and physicochemical techniques to characterize electrochemically active materials is provided.

关键词： Sodium-ion battery Anode Hard carbon Electrochemical techniques Carbon characterization

1,2,3-Triazole tethered acetophenones: Synthesis, bioevaluation and molecular docking study

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Chinese Chemical letters 2016年第7期27卷 1058-1063页

作者： Mubarak H.Shaikh Dnyaneshwar D.Subhedar Vijay M.Khedkar Prakash C.Jha Firoz A.Kalam Khan Jaiprakash n.Sangshetti bapurao b.Shingate UGC-SAP and DST-FIST Sponsored Department of Chemistry Dr. Babasaheb Ambedkar Marathwada University School of Health Sciences University of Kwa Zulu Natal Westville Campus School of Chemical Sciences Central University of Gujarat Department of Pharmaceutical Chemistry Y. B. Chavan College of Pharmacy Dr. Rafiq Zakaria Campus

A small focused library of eighteen new 1,2,3-triazole tethered acetophenones has been efficiently prepared via click chemistry approach and evaluated for their antifungal and antioxidant *** antifungal activity was evaluated against five human pathogenic fungal strains：Candida albicans,Fusarium oxysporum,Aspergillus flavus,Aspergillus niger,and Cryptococcus *** the synthesized compounds,9c,9i,and 9p found to be more potent antifungal agents that the reference *** 1,2,3-triazole based derivatives were also evaluated for antioxidant activity,and compound 9h was found to be the most potent antioxidant as compared to the standard ***,molecular docking study of the newly synthesized compounds was performed and results showed good binding mode in the active site of fungal *** enzyme P450 cytochrome ***,the synthesized compounds were also analyzed for ADME properties and showed potential as good oral drug candidates.

关键词： 1,2,3-Triazole Antifungal Antioxidant Molecular docking ADME prediction

Five-dimensional teleparallel theory equivalent to general relativity,the axially symmetric solution,energy and spatial momentum

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Chinese Physics b 2011年第11期20卷 102-109页

作者： Gamal G.l.nashed Mathematics Department Faculty of ScienceAin Shams University

A theory of （4＋1）-dimensional gravity is developed on the basis of the teleparallel theory equivalent to general relativity. The fundamental gravitational field variables are the five-dimensional vector fields （pentad）, defined globally on a manifold M, and gravity is attributed to the torsion. The lagrangian density is quadratic in the torsion tensor. We then give the exact five-dimensional solution. The solution is a generalization of the familiar Schwarzschild and Kerr solutions of the four-dimensional teleparallel equivalent of general relativity. We also use the definition of the gravitational energy to calculate the energy and the spatial momentum.

关键词： five-dimensional teleparallel equivalent of general relativity five-dimensional solution energy and spatial momentum

bilirubin adsorption property of mesoporous silica and amine-grafted mesoporous silica

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nano-Micro letters 2009年第1期1卷 14-18页

作者： l.X.Zhang M.Zhu l.M.Guo l.li J.l.Shi State Key laboratory of High Performance and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Science

nephritic, hepatic and immune failures would lead to the overload of endogenous toxic molecules(e.g. bilirubin, cholic acid, uric acid, creatinine etc.) in human bodies. It is fatal in most cases and extracorporeal blood purification(ECbP) is powerful first-aid therapy. Adsorbents are key parts of ECbP apparatus. Mesoporous silicas should be promising candidates for these medical adsorbents, but there is no report about this. Herein, pure and amine-grafted mesoporous silicas have been applied to adsorb bilirubin, cholic acid, uric acid, creatinine and phenobarbital for the first time. These mesoporous materials show high adsorption capacities for bilirubin and uric acid in phosphate buffer solution(PbS). Effects of pore sizes, amine-modification, temperature and ionic strength on their bilirubin adsorption capacities have been studied in detail.

关键词： Mesoporous silica bilirubin adsorption Amine-grafted

The role of melt cooling rate on the interface between 18R and Mg matrix in Mg_(97)Zn_(1)Y_(2) alloys

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Journal of Magnesium and Alloys 2023年第8期11卷 2883-2890页

作者： Q.Q.Jin X.H.Shao J.M.li Z.Z.Peng M.lv b.Zhang Y.M.li X.l.Ma Materials Science and Engineering Research Center Guangxi University of Science and TechnologyLiuzhou 545006China Shenyang national laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering Hebei University of Science and TechnologyShijiazhuangHebei 050018China

The role of melt cooling rate on the interface morphology and dislocation configuration between 18R long-period stacking ordered(lPSO)structure and Mg matrix in Mg_(97)Zn_(1)Y_(2)(at.%)alloys was investigated by atomic-scale HAADF-STEM *** 18R/Mg interface is step-like both in the near-equilibrium alloy and non-equilibrium *** cooling rate makes the step size more regular and *** 54R structure can be observed at the interface in the near-equilibrium alloy,and the dislocations are highly ordered.54R and 54R′structure sandwiched by b1 and b2+b3 dislocation arrays,and new dislocation configuration can be detected at the interface in the non-equilibrium alloy,but the dislocations are less ordered.18R/Mg interface containing 54R or 54R′in equilibrium width,parallel to the(010)plane,should be most stable based on elastic *** segregation of solute atoms and its strong interaction with dislocations dominate the lPSO/Mg interface via diffusion-displacive transformation.

关键词： Magnesium alloys long-period stacking ordered phases Dislocations Interface structure

Dominant effect of residual secondary phase of powders on Jc and microstructure of bi-2212 superconducting wires

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Superconductivity 2023年第4期8卷 1-8页

作者： l.H.Jin G.Q.liu J.Q.Feng X.Y.Xu G.F.Jiao S.n.Zhang Q.b.Hao P.X.Zhang C.S.li Superconducting Materials Research Center Northwest Institute for Nonferrous Metal ResearchShaanxiXi’an 710016China

bi_(2)Sr_(2)CaCu_(2)O_(8+δ)(bi‐2212)superconducting round wires exhibited great potential for use in high‐field *** purity of the precursor powders is critical for the transport current of the ***,the role of the residual secondary phase in the precursor powders is not fully ***,the origin of the secondary phase was investigated in precursor powders that were prepared using ultrasonic spray pyrolysis(USP)and calcination *** microstructure and phase evolution of the precursor powders during the crystallization process were ***,the effects that the residual secondary phase has on melting behavior,morphology properties,and the supercurrent flow of bi‐2212 multi‐filamentary wires are systematically *** residual secondary phase in the filament caused further crystallization,and this led to the formation of more and larger bi‐2201 grains at the onset of the melting *** poor microstructure and low critical current of the final bi‐2212 wires can be attributed to the presence of the residual copper‐rich ***‐2212 wires that were prepared with fully crystallized powders had a high critical current density(J_(c))of 6773 A/mm^(2) at 4.2 K,self‐*** was revealed that control of the secondary phases in precursor powders is greatly significant for achieving superior values of J_(c).

关键词： Superconductor bi‐2212 wire Residual secondary phase Powder

A new non-Pterodactyloid Pterosaur from Qinglong County,Hebei Province of China

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Acta Geologica Sinica(English Edition) 2009年第2期83卷 189-199页

作者： lǔ Junchang Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China

A new basal non-pterodactyloid pterosaur, Changchengopterus pani gen. et sp. nov., is erected, on the basis of a nearly complete postcranial skeleton. The new taxon is distinguished by relatively short extensions of the prezygapophyses, postzygapophyses and haemal arches of the caudal vertebrae; a humerus that has a subtriangular deltopectoral crest; limb elements that decrease in length in the following order： ulna〉 wing-phalange 2 〉 wing-phalange 3 = wing-phalange l〉humerus 〉tibia〉femur〉wing-metacarpal. Phylogenetic analysis suggests that Changchengopterus is a basal member of rhamphorhynchoids, and more closely related to Dorygnathus than to other rhamphorhychoids. The geological age of the Changchengopterus -bearing sediments is no latter than the end of the late Jurassic and it is possible Middle Jurassic.

关键词： Pterosauria Changchengopterus Middle Jurassic Tiaojishan Formation

纳米SiO_(2)/MUG复合改性剂的制备及其改性材性能研究

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西北林学院学报 2024年第1期39卷 208-214页

作者：孔静吕文华胡极航徐诗雨中国林业科学研究院木材工业研究所北京100091

为进一步提升三聚氰胺-尿素-葡萄糖(MUG)生物质树脂改性木材尺寸稳定性,采用单一或复合硅源[纳米SiO_(2)、KH550(K5)、KH560(K6)单一或复配后]与MUG生物质树脂复合,制得K5/MUG、K6/MUG、Si/MUG、Si/K5/MUG、Si/K6/MUG 5种有机-无机复合... 详细信息

为进一步提升三聚氰胺-尿素-葡萄糖(MUG)生物质树脂改性木材尺寸稳定性,采用单一或复合硅源[纳米SiO_(2)、KH550(K5)、KH560(K6)单一或复配后]与MUG生物质树脂复合,制得K5/MUG、K6/MUG、Si/MUG、Si/K5/MUG、Si/K6/MUG 5种有机-无机复合改性剂,分别浸渍处理人工林杨木,考察不同改性剂对杨木密度、吸水性、尺寸稳定性和力学强度等性能的影响,优选出性能最佳的复合改性剂,利用SEM和FTIR分析改性剂的分布及与木材组分的反应情况,探明复合硅协同效应及复合体系之间的相互作用机制。结果表明,5种复合改性剂均具有良好渗透性,改性材的吸药量均>200%、增重率均>44%,吸水性均比素材显著降低;其中,以5%质量分数的KH550、1%质量分数的纳米SiO_(2)和30%质量分数的MUG复合改性杨木的径向、弦向和体积湿胀率最低,分别为1.14%、2.13%和3.20%;增容率最小(8.1%);抗胀缩率最高(77.5%);顺纹抗压强度最高(130.9 MPa),较素材提高了92.03%。纳米SiO_(2)经KH550接枝改性后,能更均匀分散于MUG树脂中,并被树脂包覆固化于木材内,有机-无机协同效应使复合体系的交联程度提高,无机Si元素的刚性增加了木材机械支撑强度。因此,硅烷偶联剂改性纳米SiO_(2)能进一步提升MUG改性材的尺寸稳定性和力学强度等性能。

关键词：杨木 MUG生物质树脂纳米SiO_(2) 硅烷偶联剂改性材性能

Gravitational radiation fields in teleparallel equivalent of general relativity and their energies

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Chinese Physics b 2010年第11期19卷 132-139页

作者： Gamal G.l.nashed Mathematics Department Faculty of ScienceAin Shams UniversityCairoEgypt Centre for Theoretical Physics The British University in EgyptEl-Sherouk CityMisr-Ismalia Desert RoadPostal No.11837Egypt

We derive two new retarded solutions in the teleparallel theory equivalent to general relativity （TEGR）. One of these solutions gives a divergent energy. Therefore, we use the regularized expression of the gravitational energymomentum tensor, which is a coordinate dependent. A detailed analysis of the loss of the mass of bondi space-time is carried out using the flux of the gravitational energy-momentum.

关键词： teleparallel equivalent of general relativity energy-momentum tensor bondi mass gravitational radiation