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Simple and sensitive determination of sparfloxacin in pharmaceuticals and biological samples by immunoassay

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Journal of Pharmaceutical Analysis 2012年第3期2卷 214-219页

作者： Hua-Jin Zenga,Ran Yangb,Bing liub,li-Fang Leib,Jian-Jun lib,ling-Bo Qub,c,n aschool of Pharmaceutical Sciences,Zhengzhou university,Zhengzhou 450001,china bDepartment of chemistry,Zhengzhou university,Zhengzhou 450001,china cschool of chemistry & chemical engineering,Henan university of Technology,Zhengzhou 450001,china school of Pharmaceutical Sciences Zhengzhou University Zhengzhou 450001 China. Department of chemistry Zhengzhou University Zhengzhou 450001 China. school of chemistry & chemical engineering Henan University of Technology Zhengzhou 450001 China.

Plasma quinolone concentrations are not routinely measured in clinical ***,in order to optimize quinolone treatment,monitoring of plasma concentrations could sometimes be useful particularly in critically ill *** this study,anti-sparfloxacin antibody was obtained by immunizing rabbits with sparfloxacin conjugated with bovine serum albumin using isobutyl chloroformate *** the assay procedure was optimized,the standard curve of sparfloxacin was *** practical measuring range of the competitive EliSA extended from 5 ng/mL to 2 mg/*** recovery rates and coefficients of variation for rat plasma,urine and tissues were 87.7-106.2% and 4.8-15.3%,*** demonstrate the potential of the EliSA,a preliminary pharmacokinetics and tissue distribution study of sparfloxacin in rats and quantitative analysis of sparfloxacin in several pharmaceuticals were performed and compared with high-performance liquid chromatography(HPLC).The experimental data indicated that the proposed method would be a valuable tool in therapeutic drug monitoring(TDM) for sparfloxacin.

关键词： Sparfloxacin Enzyme-linked immunosorbent assay(EliSA) Biological samples Pharmacokinetics Tissue distribution

chemical Extraction Preparation of Delithiated Cathode Materials of li-ion Battery

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Journal of Wuhan university of Technology(Materials Science) 2009年第6期24卷 863-866页

作者：闫时建 school of Materials Science and engineering Taiyuan University of Science and Technology

A method of conventional chemical reaction to prepare delithiated cathode materials of li-ion battery was introduced. The cathode material of li-ion battery was mixed with oxidizing agent Na2S2O8 in water solution, and the solution was stirred continuously to make the chemical reaction proceed sufficiently, then the reaction product was filtered and finally the insoluble delithiated cathode material was obtained. A series of tests were conducted to verify the composition, crystal structure and electrochemical property of the delithiated cathode materials were all desirable. This method overcomes the shortcomings of battery charging preparation and chemical extraction preparation employing other oxidizing agents.

关键词： chemical extraction delithiated cathode material li-ion battery

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Δ态氧分子振动光谱的量子力学计算

西南师范大学学报（自然科学版） 2003年第4期28卷 567-571页

作者：黄整钟任斌胡小莉西南交通大学应用物理系四川成都610031 西南师范大学化学化工学院重庆400715

利用分子势能函数的PG函数形式,采用时域有限差分法对激发态氧分子O2(a1Δg)的振动能级作量子力学计算.计算结果反映了O2(a1Δg)振动的非谐性性质,得到了O2(a1Δg)的谐性和非谐性光谱常数并与文献中的实验结果进行了比较,结果令人满意.

关键词： △态氧分子振动光谱分子光谱量子力学计算分子势能函数时域有限差分法振动能级

Orientation controlled photogenerated carriers on selfsupporting CdS/Ni_(3)S_(2) paper toward photocatalytic hydrogen evolution and biomass upgrading

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Rare Metals 2024年第5期43卷 2015-2025页

作者： Xiao-Yan liu Qing Cao Gui-Xiang li Hui liu li-li Zeng li-li Zhao Bin Chang Xi-Wen Wang Hong liu Wei-Jia Zhou Institute for Advanced Interdisciplinary Research School of Chemistry and Chemical EngineeringUniversity of JinanJinan 250022China Institute of chemical Sciences and engineering Ecole Polytechnique Federale de Lausanne1015LausanneSwitzerland KAUST Catalysis Center King Abdullah University of Science and TechnologyThuwal 23955-6900Kingdom of Saudi Arabia school of Environment and Energy South China University of TechnologyGuangzhou Higher Education Mega CenterGuangzhou 510006China State Key Laboratory of Crystal Materials Shandong UniversityJinan250100China school of Mechanical engineering Xi'an Jiaotong UniversityXi'an 710054China

The appropriate regulation of band structure is an effective strategy in constructing efficient photocatalytic *** photocatalytic system mainly employs powder photocatalysts,which makes their recovery reliant on expensive separation processes and severely limits their industrial ***,we constructed a novel CdS/Ni_(3)S_(2)heterostructure using free-standing and flexible nickel fiber paper as the *** regulated energy band structure achieves effective electron–hole *** as-synthesized flexible photocatalyst exhibits considerable photocatalytic activity toward the H_(2)evolution reaction under visible-light irradiation,with an H_(2)production rate of5.63μmol·cm^(-2)·h^(-1)(14.1 mmol·g^(-1)cat·h^(-1)according to the catalyst loading content).Additionally,the otherwisewasted excited holes simultaneously drive organic transformations to yield value-added organic products,thus markedly improving the photocatalytic H_(2)evolution *** a photocatalytic system is scaled up further,where a self-supported 20 cm×25 cm sample achieves a champion H_(2)production rate of 60-80μmol·h^(-1)under practical sun *** newly developed self-supported photocatalyst produces opportunities for practical solar H2production with biomass upgrading.

关键词： Self-supporting photocatalyst CdS/Ni_(3)S_(2) heterojunction Hydrogen evolution Biomass upgrading Large-scaleapplication

Preparation of nano-sized cerium and titanium pyrophosphates via solid-state reaction at room temperature

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Rare Metals 2009年第1期28卷 33-38页

作者： WU Wenwei FAN Yanjin WU Xuehang liAO Sen HUANG Xiufu li Xuanhai school of chemistry and chemical engineering Guangxi University Nanning 530004 China

Nano-sized cerium-titanium pyrophosphates Ce1-xTixP2O7 （with x = 0, 0.2, 0.5, 0.7, 0.9, and 1.0） were obtained by grinding a mixture of Ce（SO4）2·4H2O, Ti（SO4）2, and Na4P2O7·10H2O in the presence of surfactant PEG-400 at room temperature, washing the mixture with water to remove soluble inorganic salts, and drying at 100℃. The products and their calcined samples were characterized using ultraviolet-visible spectroscopy （UV-vis）, thermogravimetry and differential thermal analyses （TG/DTA）, X-ray powder diffraction （XRD）, and transmission electron microscopy （TEM）. The results show that nano-sized Ce1-xTixP2O7 behave as an excellent UV-shielding material. Thereinto, the CeP2O7 has the most excellent UV-shielding effect, and the amorphous state of Ce0.8Ti0.2P2O7 can keep at a higher temperature than CeP2O7. Therefore, the stabilization of the amorphous state of the cerium pyrophosphates was carded out by doping titanium. This stabilization is a significant improvement, which enables to apply these amorphous pyrophosphates not only to cosmetics and paints, but also plastics and films.

关键词： cerium pyrophosphate titanium pyrophosphate solid-state reaction at room temperature UV absorbency stabilization

Self-assembly of perovskite nanocrystals:From driving forces to applications

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Journal of Energy chemistry 2024年第1期88卷 561-578,I0013页

作者： Yi li Fei Zhang school of chemical engineering and Technology Tianjin UniversityTianjin 300072China Collaborative Innovation Center of chemical Science and engineering(Tianjin) Tianjin 300072China

Self-assembly of metal halide perovskite nanocrystals(NCs)into superlattices can exhibit unique collective properties,which have significant application values in the display,detector,and solar cell *** review discusses the driving forces behind the self-assembly process of perovskite NCs,and the commonly used self-assembly methods and different self-assembly structures are ***,we summarize the collective optoelectronic properties and application areas of perovskite superlattice ***,we conclude with an outlook on the potential issues and future challenges in developing perovskite NCs.

关键词： Self-assembly Metal halide perovskite Nanocrystals Driving forces

A further study on closo boron hydrides B_(16)H_(16)^(2-)(D_2) and B_(16)H_(16)(Td) using ab initio molecular orbital theory

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Chinese Journal of chemistry 1997年第2期15卷 102-106页

作者： JIANG,Xin-Tian HU,Xu-Guang CAT,Yu-Min li,Qian-ShuDepartment of chemistry,Shanxi Normal university,Xi’an,Shanxi 710061,china Institute of Theoretical chemistry,National Key Laboratory of Theoretical and Computational chemistry,Jilin university,Changchun,Jilin 1300S3,chinaDepartment of chemical engineering,Xi’an Petroleum Institute,Xi’an,Shanxi 710061,china school of chemical engineering and Materials Science,Beijing Institute of Technology,Beijing 100081,china

Ab initio molecular orbital calculations of doubly negative charged B16H162-(D2) and neutral B16H16(Td) have been done at the HF/6-31G *** are predicted to be chemically and kinetically stable by vibrational analyses on their respective energy hypersurface of the HF/6-31G *** geometrical structure of the species B16H1622-(D2) was discussed.

关键词： Closo boron hydrides ab initio molecular orbital theory

Engineered spidroin-derived high-performance fibers for diverse applications

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Nano Research 2024年第2期17卷 492-502页

作者： Dawen Qin Jingjing li Huanrong li Hongjie Zhang Kai liu National-Local Joint engineering Laboratory for Energy Conservation in chemical Process Integration and Resources Utilization Tianjin Key Laboratory of Chemical Process SafetySchool of Chemical Engineering and TechnologyHebei University of TechnologyTianjin 300130China State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China engineering Research Center of Advanced Rare Earth Materials Ministry of EducationDepartment of ChemistryTsinghua UniversityBeijing 100084China university of Science and Technology of china Hefei 230026China

Spider silks are well known for their exceptional mechanical properties that are tougher than Kevlar and ***,the restricted production amounts from their native sources limit applications of spider *** the decades,there have been significant interests in fabricating man-made silk fibers with comparable performance to natural silks,inspiring many efforts both for biosynthesizing recombinant spider silk proteins(spidroins)in amenable heterologous hosts and biomimetic spinning of artificial spider *** strategies provide promising routes to produce high-performance and functionally optimized fibers with diverse ***,we summarize the hosts that have been applied to produce recombinant *** addition,the fabrication and mechanical properties of recombinant spidroin fibers and their composite fibers are also ***,we demonstrate the applications of recombinant spidroin-based ***,facing the challenges in biosynthesis,scalable production,and hierarchical assembly of high-performance recombinant spidroins,we give a summary and perspective on future development.

关键词： spider silk recombinant spidroin heterologous expression fiber fabrication mechanical property

engineering oxygen vacancies on Tb-doped ceria supported Pt catalyst for hydrogen production through steam reforming of long-chain hydrocarbon fuels

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Chinese Journal of chemical engineering 2024年第4期68卷 181-192页

作者： Zhourong Xiao Changxuan Zhang Peng li Desong Wang Xiangwen Zhang li Wang Jijun Zou Guozhu li State Key Laboratory of Metastable Materials Science and Technology(MMST) Hebei Key Laboratory of Applied ChemistryCollege of Environmental and Chemical EngineeringYanshan UniversityQinhuangdao 066004China Key Laboratory for Green chemical Technology of Ministry of Education School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China

Steam reforming of long-chain hydrocarbon fuels for hydrogen production has received great attention for thermal management of the hypersonic vehicle and fuel-cell *** this work,Pt catalysts supported on CeO_(2)and Tb-doped CeO_(2)were prepared by a precipitation *** physical structure and chemical properties of the as-prepared catalysts were characterized by powder X-ray diffraction,scanning electron microscopy,transmission electron microscopy,Raman spectroscopy,H_(2)temperature programmed reduction,and X-ray photoelectron *** results show that Tb-doped CeO_(2)supported Pt possesses abundant surface oxygen vacancies,good inhibition of ceria sintering,and strong metal-support interaction compared with CeO_(2)supported *** catalytic performance of hydrogen production via steam reforming of long-chain hydrocarbon fuels(n-dodecane)was *** with 2Pt/CeO_(2),2Pt/Ce_(0.9)Tb_(0.1)O_(2),and 2Pt/Ce_(0.5)Tb_(0.5)O_(2),the 2Pt/Ce_(0.7)Tb_(0.3)O_(2)has higher activity and stability for hydrogen production,on which the conversion of n-dodecane was maintained at about 53.2%after 600 min reaction under 700℃at liquid space velocity of 9 ml·g^(-1)·h^(-1).2Pt/CeO_(2)rapidly deactivated,the conversion of n-dodecane was reduced to only 41.6%after 600 min.

关键词： Steam reforming n-Dodecane Hydrogen production Pt-based catalyst Oxygen vacancy CeO_(2)