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Frontiers of Chemical Science and Engineering 2024年第2期18卷 113-125页

作者： feng zhang Shuainan Xu Xiumei Geng Meixia Shan Yatao zhang School of Chemical Engineering Zhengzhou UniversityZhengzhou 450001China

Polymers of intrinsic microporosity shows great potential for dye adsorption and magnetic Fe_(3)O_(4) are easy to be *** this work,hydrolyzed polymers of intrinsic microporosity-1/Fe_(3)O_(4) composite adsorbents were prepared by phase inversion and hydrolysis process for cationic dye *** chemical structure and morphology of the composite adsorbents were systematically characterized by several characterization *** methylene blue as the target dye,the influences of solution pH,contact time,initial dye concentration,and system temperature on the methylene blue adsorption process were *** incorporation of Fe_(3)O_(4) particle into hydrolyzed polymers of intrinsic microporosity-1 endow the adsorbent with high magnetic saturation(20.7 emu·g^(–1))which allows the rapid separation of the ***,the adsorption process was simulated by adsorption kinetics,isotherms and thermodynamics to gain insight onto the intrinsic adsorption *** addition,the composite adsorbents are able to selectively adsorb cationic dyes from mixed dyes *** polymers of intrinsic microporosity/Fe_(3)O_(4) shows only a slight decrease for methylene blue adsorption after 10 adsorption/regeneration cycles,demonstrating the outstanding regeneration *** high adsorption capacity,outstanding regeneration ability,together with simple preparation method,endow the composite adsorbents great potential for selective removal of cationic dyes in wastewater system.

关键词： polymers of intrinsic microporosity magnetic adsorbent cationic dye adsorption

Control of Ultra Low Titanium in Ultra Low Carbon Al-Si Killed Steel

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Journal of Iron and Steel Research International 2013年第4期20卷 20-25页

作者： zhang feng LI Guang-qiang Silicon Steel Department Baoshan Iron and Steel Co.Ltd. Key Laboratory forFerrous Metallurgy and Resources Utilization of Ministry of Education Wuhan University of Science and Technology

Titanium is the impurity in some special steel *** existence of titanium decreases the grain size,depresses the yield strength,and results in the low quality of these steels in various ***,titanium should be removed to the *** on the industrial production of ultra low carbon Al-Si killed steel,the physical-chemical behavior of titanium was investigated in vacuum degassing refining（RH）process with and without *** influences of titanium content in hot metal,ladle slag composition,and ladle slag quantity,etc,on titanium content of refined liquid steel were *** results showed that the partition ratio of titanium between ladle slag and liquid steel is in inverse proportion to the 4/3square of aluminum *** maximum partition ratio of titanium between top slag and liquid steel can be obtained by adjusting an optimum slag composition including contents of FeOxand Al2O3and the slag basicity,and the suitable range of them should be controlled higher than 6%,less than 20%,and within 1.5to 3.0,***,desulfurization refining by RH decreases the partition ratio of titanium between ladle slag and liquid steel *** ensure the titanium content stably less than 15×10-6 in a 300tladle,the titanium content in hot metal must be less than 500×10-6 and the thickness of basic oxygen furnace（BOF）slag carrying over must be less than 50mm.

关键词： titanium desulfurization RH refining ultra low carbon steel Al-Si killed steel

Two-Flux Colliding Plane Waves in String Theory

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Communications in Theoretical Physics 2005年第3X期44卷 463-472页

作者： CHEN Bin zhang Jun-feng Department of Physics Peking University Beijing 100871 China Department of Mathematics Capital Normal University Beijing 100037 China

We construct the two-flux colliding plane wave solutions in higher-dimensional gravity theory with dilaton,and two complementary fluxes. Two kinds of solutions have been obtained: Bell-Szekeres (BS) type and homogeneous type. After imposing the junction condition, we find that only the BS type solution is physically well-defined. Furthermore, we show that the future curvature singularity is always developed for our solutions.

关键词： colliding plane wave string theory

Samarium( II )-electrocatalyzed chemoselective reductive alkoxylation of phthalimides

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Organic Chemistry Frontiers 2022年第5期9卷 1308-1314页

作者： Yu-feng zhang Mohamed Mellah Universite Paris-Saclay CNRSInstitut de Chimie Moleculaire et des Materiaux d’OrsayBatiment 42091405 OrsayFrance

The unprecedented samarium electrocatalyzed reductive alkoxylation of phthalimides in a single step is *** mild conditions,using electrogenerated Sm(II)with TMSCl(trimethyl chlorosilane),N-substituted 3-alkoxyl isoind... 详细信息

关键词： catalyzed reductive substituted

Induced Lie Algebras of a Six-Dimensional Matrix Lie Algebra

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Communications in Theoretical Physics 2008年第8期50卷 289-294页

作者： zhang Yu-feng LIU Jing Mathematical School Liaoning Normal University Dalian 116029 China

By using a six-dimensional matrix Lie algebra [*** and ***,***.A 360 (2006) 92], three induced Lie algebras are *** of them is obtained by extending Lie bracket,the others are higher- dimensional complex Lie algebras constructed by using linear *** equivalent Lie algebras of the later two with multi-component forms are obtained as *** their applications,we derive an integrable coupling and quasi-Hamiltonian structure of the modified TC hierarchy of soliton equations.

关键词： Lie algebra soliton equation Hamiltonian structure

The Solutions of the Coupled Einstein-Maxwell Equations and Dilaton Equations

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Acta Mathematicae Applicatae Sinica 2018年第3期34卷 485-492页

作者： Rui-feng zhang Ya GU Institute of Contemporary Mathematics Henan University Kaifeng 475004 China School of Mathematics and Statistics Henan University Kaifeng 475004 China

In this paper, we consider extremely charged static perfect fluid distributions with a dilaton field in the framework of general relativity. By using calculus of variations, we establish the existence theorem for the solutions of this important gravitational system. We show that there is a continuous family of smooth solutions realizing asymptotically flat space metrics.

关键词： nonlinear elliptic equations the variational method the asymptotic estimates.

Encoding and display technologies for combinatorial libraries in drug discovery:The coming of age from biology to therapy

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Acta Pharmaceutica Sinica B 2024年第8期14卷 3362-3384页

作者： Yu Fan Ruibing feng Xinya zhang Zhen-Liang Wang feng Xiong Shuihua zhang zhang-feng Zhong Hua Yu Qing-Wen zhang zhang zhang Yitao Wang Guodong Li Macao Centre for Research and Development in Chinese Medicine State Key Laboratory of Quality Research in Chinese MedicineInstitute of Chinese Medical SciencesUniversity of MacaoMacao SAR 999078China State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical SciencesUniversity of MacaoMacao SAR 999078China International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development Ministry of Education(MoE)of People’s Republic of ChinaCollege of PharmacyJinan UniversityGuangzhou 510632China Zhuhai UM Science and Technology Research Institute Zhuhai 519031China Department of Pharmacy Guangzhou Red Cross HospitalFaculty of Medical ScienceJinan UniversityGuangzhou 510632China Geriatric Medicine First People’s Hospital of XinXiang and the Fifth Affiliated Hospital of Xinxiang Medical CollegeXinxiang 453100China Shenzhen Innovation Center for Small Molecule Drug Discovery Co. Ltd.Shenzhen 518000China

Drug discovery is a sophisticated process that incorporates scientific innovations and cuttingedge *** to traditional bioactivity-based screening methods,encoding and display technologies for combinatorial libraries have recently advanced from proof-of-principle experiments to promising tools for pharmaceutical hit discovery due to their high screening efficiency,throughput,and resource *** review systematically summarizes the development history,typology,and prospective applications of encoding and displayed technologies,including phage display,ribosomal display,mRNA display,yeast cell display,one-bead one-compound,DNA-encoded,peptide nucleic acidencoded,and new peptide-encoded technologies,and examples of preclinical and clinical *** discuss the progress of novel targeted therapeutic agents,covering a spectrum from small-molecule inhibitors and nonpeptidic macrocycles to linear,monocyclic,and bicyclic peptides,in addition to *** also address the pending challenges and future prospects of drug discovery,including the size of screening libraries,advantages and disadvantages of the technology,clinical translational potential,and market *** review is intended to establish a comprehensive high-throughput drug discovery strategy for scientific researchers and clinical drug developers.

关键词： Drug screening Phage display DNA-encoded chemical libraries Peptide-encoded chemical libraries Clinical drugs

Infrared optical coatings in SITP

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光学精密工程 2005年第4期13卷 483-486页

作者： LIU Ding-quan zhang feng-shan Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai 200083 China

Infrared optical coatings in SITP (Shanghai Institute of Technical Physics) mainly cover the spectrum range from 0.7 μm to 15 μm, and visible and near-UV range are also been included. The coatings are mainly used for metal-reflectance mirrors, Anti-reflection(AR) lens and windows, filters, and dichroic beam splitters. Coatings passed some dependability tests. These optical coated devices usually consist in a remote observing instrument. Most coating materials are commercial products. And one kind of special material PbTe is made by ourselves. Some main results of our research department are reported.

关键词：上海物理研究所光学涂覆技术红外线光谱

Metal hydride work pair development and its application on automobile air conditioning systems

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2007年第2期8卷 197-204页

作者： QIN feng CHEN Jiang-ping zhang Wen-feng CHEN Zhi-jiu Institute of Refrigeration and Cryogenic Engineering Shanghai Jiao Tong University Shanghai 200030 China Research Center Zhejiang Yinlun Machinery Co. Ltd. Tiantai 317200 China

Aiming at developing exhaust gas driving automobile air conditioning systems, a hydride pair LaNi4.61Mn0.26A10.13/ La0.6Y0.4Ni4.8Mn0.2 was developed working at 393-473 K/293-323 K/263-273 K. Property tests showed that both alloys have flat plateau slopes and small hystereses; system theoretical coefficient of performance （COP） is 0.711. Based on this work pair, a function proving automobile metal hydride refrigeration system was constructed. The equivalent thermal conductivities of the activated reaction beds were merely 1.1-1.6 W/（m-K）, which had not met practical requirement. Intermittent refrigeration cycles were achieved and the average cooling power was 84.6 W at 423 K/303 K/273 K with COP being 0.26. By altering cycling parameters, experiment data showed that cooling power and system COP increase with the growth of heat source temperature as well as pre-heating and regeneration time while decrease with heat sink temperature increment. This study confirms the feasibility of automobile metal hydride refrigeration systems, while heat transfer properties of reaction beds still need to be improved for better performance.

关键词： Metal hydride Air conditioning Reaction bed Automobile Coefficient of performance (COP)

The Existence of Solutions for the Problem in the Optical Lattice with Nonlocal Nonlinearity

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Acta Mathematicae Applicatae Sinica 2012年第4期28卷 681-690页

作者： Rui-feng zhang Ren-tao LIU Institute of Contemporary Mathematics Henan University College of Mathematics and Information Science Henan University

We address the impact of nonlocality in the physical features exhibited by solitons supported by Kerr-type nonlinear media with an imprinted optical lattice. We discuss the solitons solution for a class of nonlinear SchrSdinger equations in the optical lattice with nonlocal nonlinearity. We also show via a uniform priori estimate that existence and uniqueness of the global solution for the initial problem.

关键词： SchrSdinger equation Cauchy problem contract mapping principle Calerkin method