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Studies on Insoluble Species of Gd(Ⅲ)in Human Blood Plasma by Computer Simulation

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Chemical Research in Chinese Universities 2001年第4期17卷 352-355页

作者： WANG Yue LU Xing ZHANG Hai-yuan YANG Kui-yueNIU Chun-ji NI Jia-zuan Key Laboratory of Rare Earth chemistry and Physics Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022

The insoluble species of Gd ( Ⅲ ) in human blood plasma were investigated by computer simulation. The distribution of the Gd(Ⅲ ) species was obtained. It was found that most of the Gd( Ⅲ ) ions were bound to phosphate to form precipitate GdPO4 at the concentration of 1. 000 10-7 mol/L and when the concentration of the Gd (Ⅲ ) increased to 3. 750 X 10-4 mol/L, in excess of the concentration of phosphate, the Gd ( Ⅲ ) ions were bound to carbonate to form another kind of precipitate, Gd2(CO3)3.

关键词： Speciation Gadolinium ( Ⅲ ) Computer simulation

Advanced surface engineering of titanium materials for biomedical applications:From static modification to dynamic responsive regulation

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Bioactive Materials 2023年第9期27卷 15-57页

作者： Pinliang Jiang Yanmei Zhang Ren Hu Bin Shi Lihai Zhang Qiaoling Huang Yun Yang Peifu Tang Changjian Lin South China Advanced institute for Soft Matter Science and Technology School of Emergent Soft MatterGuangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and DevicesSouth China University of TechnologyGuangzhou510640China State Key Lab of Physical chemistry of Solid Surfaces Department of ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen361005China Department of Orthopaedics General Hospital of Chinese PLABeijing100853China Research institute for Biomimetics and Soft Matter Fujian Provincial Key Laboratory for Soft Functional Materials ResearchCollege of Physical Science and TechnologyXiamen UniversityXiamen361005China

Titanium(Ti)and its alloys have been widely used as orthopedic implants,because of their favorable mechanical properties,corrosion resistance and *** their significant success in various clinical applications,the probability of failure,degradation and revision is undesirably high,especially for the patients with low bone density,insufficient quantity of bone or osteoporosis,which renders the studies on surface modification of Ti still active to further improve clinical *** is discerned that surface physicochemical properties directly influence and even control the dynamic interaction that subsequently determines the success or rejection of orthopedic ***,it is crucial to endow bulk materials with specific surface properties of high bioactivity that can be performed by surface modification to realize the *** article first reviews surface characteristics of Ti materials and various conventional surface modification techniques involving mechanical,physical and chemical treatments based on the formation mechanism of the modified *** conventional methods are able to improve bioactivity of Ti implants,but the surfaces with static state cannot respond to the dynamic biological cascades from the living cells and ***,beyond traditional static design,dynamic responsive avenues are then *** dynamic stimuli sources for surface functionalization can originate from environmental triggers or physiological *** short,this review surveys recent developments in the surface engineering of Ti materials,with a specific emphasis on advances in static to dynamic functionality,which provides perspectives for improving bioactivity and biocompatibility of Ti implants.

关键词： Titanium materials Orthopedic implants Bioactivity Static modification Dynamic responsive regulation

Determination of Trace Elements in High Purity Gold by High Resolution Inductively Coupled Plasma Mass Spectrometry

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Journal of Wuhan University of Technology(Materials Science) 2009年第4期24卷 608-612页

作者：谢华林 School of chemistry and Chemical Engineering Central South University Department of chemistry Hunan Institute of Technology

Trace elements were determined in high purity gold by high resolution inductively coupled plasma mass spectrometry （HR-ICP-MS）. Sample were decomposed by aqua regia. To overcome some potentially problematic spectra/ interference, measurements were acquired in both medium and high resolution modes. The matrix effects due to the presence of excessive HCl and Au were evaluated. The optimum conditions for the determination was tested and discussed. The standard addition method was employed for quantitative analysis. The detection limits range from 0.01ug/g to 0.28ug/g depending on the elements. The method is accurate, quick and convenient. It has been applied to the determination of trace elements in high purity gold with satisfactory results.

关键词： high purity gold trace elements high resolution inductively coupled plasma mass spectrometry spectral interferences

Synthesis and crystal structure of（C5Me4SiMe3）[（^iPrN）2CCH2SiMe3]2Y

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Journal of Rare Earths 2009年第1期27卷 18-21页

作者：陈珏王秀莲罗云杰姚英明 Organometallic chemistry Laboratory Ningbo Institute of TechnologyZhejiang University Department of chemistry and Chemical Engi-neering Suzhou University

Reaction of（C5Me4SiMe3）Y（CH2SiMe）2（THF） with two equivalents of iPrN=C=NiPr in hexane at room temperature afforded a mixed-ligand yttrium complex（C5Me4SiMe3）（iPrN）2CCH2SiMe32Y.X-ray diffraction revealed that the center metal was nine-coordinated by one cyclopentadienyl ring and two amidinate ligands, and adopted a four-legged piano stool geometry.

关键词： organo yttrium complex insertion reaction crystal structure rare earths

Direct knitting privileged molecular catalysts into recyclable single-site catalysts with enhanced activity

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Science China chemistry 2020年第4期63卷 419-420页

作者： Yong Tang State Key Laboratory of Organometallic chemistry Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai 200032China

An ideal strategy for catalyst immobilization is taking advantage of the widely well studied homogeneous molecular catalysts and transforming them directly into highly efficient and recyclable heterogeneous ***,the obtained heterogeneous catalysts often have inferior activity due to altered chemical environment around active centers and decreased mass/heat transfer[1,2].

关键词： catalysts molecular centers

Dielectric Permittivity of Rigid Rapeseed Oil Polyol Polyurethane Biofoams and Petrochemical Foams at Low Frequencies

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Journal of Renewable Materials 2020年第9期8卷 1151-1170页

作者： Ilze Beverte Vairis Shtrauss Aldis Kalpinsh Uldis Lomanovskis Ugis Cabulis Irina Sevastyanova Sergejs Gaidukovs institute for Mechanics of Materials University of LatviaRigaLV-1006Latvia Latvian State institute of Wood chemistry RigaLV-1006Latvia Faculty of Materials Science and Applied chemistry Institute of Polymer MaterialsInstitute of Applied ChemistryRiga Technical UniversityRigaLV-048Latvia

Early investigations of dielectric permittivity of rigid polyurethane foams at low frequencies were made on petrochemical-origin foams,mainly by means of parallel plate *** the present investigation biopolyol was synthesized from Latvia-grown rapeseeds’oil by the transesterification method with triethanolamine,in an environmentally friendly process,without emission of harmful substances,at temperatures 175℃±5℃.Rigid,closed-cell rapeseed oil polyol polyurethane biofoams and petrochemical foams were made ensuring content of the renewable rapeseed oil polyol in ready foams 27 wt.%–29 wt.%.Dielectric permittivity of the polyurethane foams and the underlying monolithic petrochemical-origin polyurethane and biopolyurethane was measured with a non-destructive dielectric spectrometer equipped with a capacitive sensor of one-side access type at 16 discrete frequencies distributed geometrically over the band 10 Hz,…,330 *** value of the gaseous phase in the closed-cells was estimated to beεg≈1.001 that corresponds to the values,characteristic for the most of *** permittivity of petrochemical polyurethane foams and the mentioned biofoams was compared with permittivity of polyurethane foams from industrial producers Sika JSC and General Plastics Manufacturing *** foams of the developed formulation exhibit competitive,low dielectric permittivity,not exceeding that of the foams from industrial producers:petrochemical foams up to 550 kg/m^(3) and the mentioned biofoams,comprising the renewable rapeseed oil polyol,up to densities 230–250 kg/m^(3).Considering petrochemical-origin polyurethane foams as a heterogeneous media“Polymer—gaseous phase”,the applicability of the rule of mixture and Maxwell–Garnett equation to model mathematically the dependence of effective dielectric permittivity on the volume fraction of phases was showed.

关键词： Polyurethane foams rapeseed oil polyol biofoams dielectric permittivity capacitive sensor one-side access low frequencies

Synthesis and Luminescence Properties of SBA-15 Functionalized with Covalently Bonded Terbium-Benzoic Acid Complex

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Journal of Rare Earths 2004年第Z1期22卷 147-148页

作者： Peng Chunyun Zhang Hongjie Liu Fengwei Meng Qinguo Fu Lianshe Sun Lining Guo Junfang Yu Jiangbo Key Lab of Rare Earth chemistry and Physics Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China Key Lab of Rare Earth Chemistry and Physics Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China Key Lab of Rare Earth Chemistry and Physics Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China Key Lab of Rare Earth Chemistry and Physics Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China Key Lab of Rare Earth Chemistry and Physics Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China Key Lab of Rare Earth Chemistry and Physics Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China Key Lab of Rare Earth Chemistry and Physics Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China Key Lab of Rare Earth Chemistry and Physics Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China

Novel hybrid materials containing covalently bonded Terbium-benzoic acid complex in mesoporous silicaSBA-15 (denoted as Tb-SBA-15 ) were prepared via co-condensation of tetrethoxysilane (TEOS) and N-(4-benzoicacid-yl), N'-(propyltriethoxysilyl) urea (denoted as PABI).XRD, FTIR and luminescence spectroscopy were employed to characterize *** monitored by the ligand absorption wavelength (270 nm), Tb-SBA-15 displays the emission of Tb3+ (5D4→7Fj (j = 6, 5, 4, 3 ) transition) due to the energy transfer from the ligands to Tb3+.

关键词： SBA-15 covalently bonded terbium complex rare earths

Treatment of Alzheimer's disease with small-molecule photosensitizers

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Chinese Chemical Letters 2023年第5期34卷 132-142页

作者： Yefei Jiang Zhiyong Zeng Jianhua Yao Ying Guan Peipei Jia Xiaoli Zhao Lin Xu Shanghai Key Laboratory of Green chemistry and Chemical Processes School of Chemistry and Molecular EngineeringEast China Normal UniversityShanghai 200062China Joint institute of Tobacco and Health Yunnan Academy of Tobacco ScienceKunming 650024China Wuhu Hospital Affiliated to East China Normal University(The Second People's Hospital of Wuhu) Wuhu 241001China

Alzheimer's disease is a neurodegenerative disease that signals for excessβ-amyloid(Aβ)*** people have made great attempts to control the aggregation of Aβ,no effective medications have been produced *** to its excellent temporal and spatial selectivity,photodynamic treatment has been gradually employed and interfered in the aggregation process of Aβ,with some *** enhance the research and application of photodynamic therapy in Alzheimer's disease,this paper reviews the progress of small-molecule photosensitizers in the treatment of Alzheimer's disease in recent years and outlines existing tactics and potential obstacles.

关键词： Alzheimer’s disease Photosensitizer Aβaggregation PDT

Overall Evaluation of the Effect of Residual Stress Induced by Shot Peening in the Improvement of Fatigue Fracture Resistance for Metallic Materials

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Chinese Journal of Mechanical Engineering 2015年第2期28卷 416-421页

作者： WANG Renzhi RU Jilai Metal Physics Laboratory Beijing Institute of Aeronautical Materials Metal & chemistry institute China Academy of Railway Science

Before 1980s,the circular suspension spring in automobile subjected to torsion fatigue load,under the cyclic normal tensile stresses,the majority of fatigue fracture occurred was in normal tensile fracture mode（NTFM）and the fracture surface was under 45°*** there exists the interaction between the residual stresses induced by shot peening and the applied cyclic normal tensile stresses in NTFM,which represents as＂stress strengthening mechanism＂,shot peening technology could be used for improving the fatigue fracture resistance（FFR）of ***,since 1990s up to date,in addition to regular NTFM,the fatigue fractures occurred of peened springs from time to time are in longitudinal shear fracture mode（LSFM）or transverse shear fracture mode（TSFM）with the increase of applied cyclic shear stresses,which leads to a remarkable decrease of ***,LSFM/TSFM can be avoided effectively by means of shot peening treatment again on the peened *** phenomena have been rarely happened *** present there are few literatures concerning this *** upon the results of force analysis of a spring,there is no interaction between the residual stresses by shot peening and the applied cyclic shear stresses in shear ***;means that the effect of＂stress strengthening mechanism＂for improving the FFR of LSFM/TSFM is disappeared *** shot peening,however,both of residual stress and cyclic plastic deformed microstructure are induced synchronously like＂twins＂in the surface layer of a *** has been found for the first time by means of force analysis and experimental results that the modified microstructure in the＂twins＂as a＂structure strengthening mechanism＂can improve the FFR of LSFM/*** the same time,it is;also shown that the optimum technology of shot peening strengthening must have both＂stress strengthening mechanism＂and＂structure strengthening mechanism＂simultaneously so that the FFR of both NTFM and LSFM/TSFM can be improv

关键词： shot peening strengthening principle fatigue fracture resistance strengthening mechanisms of fatigue fracture classification on fatigue fracture mode