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Limitation standard of toxic aconitines in Aconitum proprietary Chinese medicines using on-line extraction electrospray ionization mass spectrometry

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Acta Pharmaceutica Sinica B 2020年第8期10卷 1511-1520页

作者： Zi-Dong Qiu Xu-Ya wei Rui-Qi sun Jin-Long Chen Ting Tan Jia-Quan Xu Guang-Hong Cui Tong Chen Juan Guo Chang-Jiang-Sheng {2. Lu-Qi Huang State Key Laboratory Breeding Base of Dao-di Herbs National Resource Center for Chinese Materia MedicaChina Academy of Chinese Medical SciencesBeijing 100700China The National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine Jiangxi University of Traditional Chinese MedicineNanchang 330006China State Key Laboratory of Natural Medicines China Pharmaceutical UniversityNanjing 210009China Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation College of ChemistryBiology and Material SciencesEast China Institute of TechnologyNanchang 330013China

Development of rapid analytical methods and establishment of toxic component limitation standards are of great importance in quality control of traditional Chinese medicine. Herein, an online extraction electrospray ionization mass spectrometry(oEESI-MS) coupled with a novel whole process integral quantification strategy was developed and applied to direct determination of nine key aconitine-type alkaloids in 2. Aconitum proprietary Chinese medicines(APCMs). Multi-type dosage forms(e.g., tablets, capsules, pills, granules, and liquid preparation) of APCM could be determined directly with excellent versatility. The strategy has the characteristics of high throughput, good tolerance of matrix interference, small amount of sample(~0.5 mg) and reagent(~2.0 μL) consumption, and short analysis time for single sample(15 min). The results were proved to be credible by high performance liquid chromatographyàmass spectrometry(LC-MS) and electrospray ionization mass spectrometry, respectively. Moreover, the limitation standard for the toxic aconitines in 2. APCMs was established based on the holistic weight toxicity(HWT) evaluation and the Chinese Pharmacopoeia severally, and turned out that HWT-based toxicity evaluation results were closer to the real clinical applications. Hence,a more accurate and reliable APCM toxicity limitation was established and expected to play an important guiding role in clinics. The current study extended the power of ambient MS as a method for the direct quantification of molecules in complex samples, which is commonly required in pharmaceutical analysis,food safety control, public security, and many other disciplines.

关键词： Aconitum dosage tablets

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Effect of oxygen enrichment on sintering behavior of high proportion vanadium-titanium magnesite concentrates

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Journal of Iron and Steel Research International 2023年第11期30卷 2122-2132页

作者： Shi-hong Peng Hao Liu Ze-zheng sun Chang-wei Li Yue-lin Qin wei-qiang Liu Guang Wang School of Metallurgy and materials Engineering Chongqing University of Science and TechnologyChongqing401331China Value-Added Process and Clean Extraction of Complex Metal Mineral Resources Chongqing Municipal Key Laboratory of Institutions of Higher EducationChongqing401331China Chongqing Chuanyi Automation Co. Ltd.Chongqing401120China Process and Systems Engineering Åbo Akademi UniversityÅbo20500Finland department of materials {2. and Engineering McMaster UniversityOntarioL8S 4L7Canada

To achieve high-efficiency utilization of complex and unmanageable iron-containing minerals,the effects of oxygen enrichment on productivity,yield,flame front speed,exhaust gas peak temperature,and desulphurization reaction of the vanadium-titanium magnetite sintering process as well as sinter tumble index and mineralogy were clarified,with oxygen enrichment concentrations ranging from 2. to 2. vol.%.Results indicated that with increasing the oxygen enrichment concentration from 2. to 2. vol.%,the flame front speed increased from 30.3 to 40.0 mm min^(-1),the yield enhanced from 72.to 77%,and the productivity augmented from 1.83 to 2.67t m^(-2.h^(-1);in the meantime,the tumble index was improved from 73.7%to 77.9%,and the exhaust gas peak temperature rose from 376.4 to 484.8℃.The main reason for the improvement in sintering properties was the increased combustibility of fuels and the generation of proper liquid phase that improved the permeability of the packed *** improved sinter strength is mainly due to the increase in the phase fraction of silico-ferrites of calcium and *** addition,oxygen enrichment sintering could significantly increase the desulphurization level of vanadium-titanium magnetite sinter and the rate of desulphurization reaction during sintering process.

关键词： Sinter Oxygen enrichment Vanadium-titanium magnetite Sintering behavior

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Variant selection induced by electropulsing:Optimization in the microstructure of selective laser melted Ti-6Al-4 V alloy

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Journal of materials science & {2. 2023年第28期159卷 219-224页

作者： Xudong Yan Xiaofeng Xu Yang Zhao Yachong Zhou Zhicheng Wu lai wei Yongqiang Yu Chao Wu Key Laboratory of Automobile materials Ministry of Educationand Department of Materials Science and EngineeringJilin UniversityChangchun 130025China weihai Bionics Research Institute-Jilin university Weihai 264402China Key Laboratory of Bionic Engineering Ministry of Education Jilin UniversityChangchun 130025China

Selective laser melting(SLM)is one of the most popular addi-tive manufacturing(AM)*** a near-net shape man-ufacturing method,it offers many advantages from the manufac-turing perspective and has attracted more and more current re-search interests in fabricating the workhorse titanium alloy Ti-6Al-4 V[1].Since the high cooling rate of the molten pool and complicated thermal cycle will result in a fine and metastableαmicrostructure,generally,post-process is required to optimize the microstructure for the widespread application *** iso-static pressing(HIP)and traditional heat treatment are the main post-treatments for the SLM-built Ti-6Al-4 V component[2..How-ever,HIP is a high-cost process and most heat treatments could not achieve a microstructure with high strength-ductility synergy and thermostability,e.g.,sub-transus water quenched microstruc-ture showed superior mechanical properties,but the martensite is far from thermodynamic equilibrium;the sup-transus air cooled microstructure has high thermostability but exhibits low elonga-tion[3,4].

关键词： microstructure alloy martensite

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Synergistic CO_(2.reduction and tetracycline degradation by CuInZnS-Ti_(3)C_(2.T_(x)in one photoredox cycle

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Nano Research 2022年第9期15卷 8010-8018页

作者： Lijing Wang Zhan Zhang Renquan Guan Dandan Wu weilong Shi Limin Yu Pan Li wei wei Zhao Zhao Zaicheng sun Henan Engineering Center of New Energy Battery materials Henan D&A Engineering Center of Advanced Battery MaterialsCollege of Chemistry and Chemical EngineeringInstitute of Architectural EngineeringShangqiu Normal UniversityShangqiu 476000China Faculty of Physics Faculty of ChemistryNortheast Normal UniversityChangchun 130024China Center of excellence for environmental safety and biological effects Beijing Key Lab for Green Catalysis and SeparationDepartment of Chemistry and Chemical EngineeringCollege of Environmental and Energy EngineeringBeijing University of TechnologyBeijing 100124China School of Material science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China

Optimizing photocatalytic CO_(2.reduction with simultaneous pollutant degradation is highly ***,the photocatalytic efficiency is restricted by the unmatched redox ability,high carriers’recombination rate,and lack of reactive sites of the present ***,the CuInZnS-Ti_(3)C_(2.T_(x)hybrid with matched redox ability and suitable CO_(2.adsorption property was rationally *** nucleation and growth process of CuInZnS was interfered by the addition of Ti_(3)C_(2.T_(x)with a negative charge,resulting in thinner nanosheets and richer reactive ***,the Schottky heterojunction built in the hybrid simultaneously improved the photoexcited charge transfer property,sunlight absorption range,and CO_(2.adsorption ***,upon exposure to sunlight,CuInZnS-Ti_(3)C_(2.T_(x)exhibited an efficient photocatalytic CO_(2.reduction performance(10.2.mol·h^(−1)·g^(−1))with synergetic tetracycline degradation,obviously higher than that of pure *** on the combination of theoretical calculation and experimental characterization,the photocatalytic mechanism was investigated *** work offers a reference for the remission of worldwide energy shortage and environmental pollution problems.

关键词： CuInZnS-Ti_(3)C_(2.T_(x) photocatalysis CO_(2.reduction tetracycline degradation

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Hybridized Mechanical and Solar Energy-Driven Self-Powered Hydrogen Production

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Nano-Micro Letters 2020年第7期12卷 135-144页

作者： Xuelian wei Zhen Wen Yina Liu Ningning Zhai Aimin wei Kun Feng Guotao Yuan Jun Zhong Yinghuai Qiang Xuhui {2. Jiangsu Province Engineering Laboratory of High Efficient Energy Storage technology and Equipments School of Materials Science and EngineeringChina University of Mining and TechnologyXuzhou 221116People’s Republic of China Jiangsu Key Laboratory for Carbon-Based Functional materials and Devices Institute of Functional Nano and Soft Materials(FUNSOM)Soochow UniversitySuzhou 215123People’s Republic of China department of Mathematical sciences Xi’an Jiaotong-Liverpool UniversitySuzhou 215123People’s Republic of China

Photoelectrochemical hydrogen generation is a promising approach to address the environmental pollution and energy *** this work,we present a hybridized mechanical and solar energy-driven selfpowered hydrogen production system.A rotatory disc-shaped triboelectric nanogenerator was employed to harvest mechanical energy from water and functions as a su cient external power ***3/BiVO4 heterojunction photoanode was synthesized in a PEC water-splitting cell to produce *** transformation and rectification,the peak current reaches 0.1 m A at the rotation speed of 60 *** this case,the H2.evolution process only occurs with sunlight *** the rotation speed is over 130 rpm,the peak photocurrent and peak dark current have nearly equal *** electrolysis of water is almost simultaneous with photoelectrocatalysis of *** is worth noting that the hydrogen production rate increases to 5.45 and 7.2.μL min-1 without or with light illumination at 160 *** corresponding energy conversion e ciency is calculated to be 2.43%and 2.59%,*** the results demonstrate such a self-powered system can successfully achieve the PEC hydrogen generation,exhibiting promising possibility of energy conversion.

关键词： WO3/BiVO4 heterojunction Photoelectrochemical hydrogen generation Triboelectric nanogenerator Mechanical energy Solar energy

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Propagation of Shear Horizontal Waves in Laminated Composites Based on Differently Orientated Poled 0.72.b(Mg_(1/3)Nb_(2.3))O_(3)-0.2.PbTiO_(3)Single Crystals

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Chinese Physics Letters 2013年第9期30卷 120-123页

作者： WANG Yu-Ling ZHANG Rui sun En-wei SONG wei CAO Wen-Wu Condensed Matter science and technology Institute Harbin Institute of TechnologyHarbin 150080 department of Physics Daqing Normal UniversityDaqing 163712 materials Research Institute The Pennsylvania State UniversityUniversity ParkPennsylvania 16802USA

The propagation characteristics of shear horizontal waves in[001]𝑑,[011]𝑑and[111]𝑑direction polarized 0.72.b(Mg_(1/3)Nb_(2.3))O_(3)-0.2.PbTiO_(3)(PMN-0.2.PT)piezoelectric single crystals/polymer periodic laminated composites are studied by using the global matrix *** numerical results show that the piezoelectric effect has a significant influence on the bandgap width of the composite structure containing[011]𝑑and[111]𝑑poled PMN-0.2.PT,but little effect on the band structure of the system containing[001]𝑑poled single *** addition,the first bandgap(FBG)width of the composite structure depends strongly on the poling directions when the filling fraction of PMN-0.2.PT is larger than 0.5,and its FBG starting frequency displays no distinct difference among the three polarization directions at all filling *** reported results provide valuable guidelines for designing filters and transducers made of composite structures containing relaxor-based ferroelectric single crystals.

关键词： composite composites piezoelectric

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Microstructure evolution and deformation mechanism ofα+βdual-phase Ti-xNb-yTa-2.r alloys with high performance

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Journal of materials science & {2. 2022年第36期131卷 68-81页

作者： Ting Zhang Daixiu wei Eryi Lu Wen Wang Kuaishe Wang Xiaoqing Li lai-Chang Zhang Hidemi Kato weijie Lu Liqiang Wang State Key Laboratory of Metal Matrix Composites School of Material Science and EngineeringShanghai Jiao Tong UniversityShanghai200240China School of Metallurgical Engineering Xi’an University of Architecture and TechnologyXi’an710055China Institute for materials Research Tohoku University2-1-1 KatahiraSendaiMiyagi980-8577Japan department of Stomatology Renji HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai200127China department of materials {2. and Engineering KTH-Royal Institute of Technology10044StockholmSweden School of Engineering Edith Cowan University270 Joondalup DriveJoondalupPerthWA 6027Australia

Biomedicalβ-phase Ti-Nb-Ta-Zr alloys usually exhibit low elastic modulus with inadequate *** the present work,a series of newly developed dual-phase Ti-xNb-yTa-2.r(wt.%)alloys with high performance were investigated in which the stability ofβ-phase was reduced under the guidelines of ab initio calculations and d-electronic *** effects of Nb and Ta contents on the microstructure,compressive and tensile properties were *** demonstrate that the designed Ti-xNb-yTa-2.r alloys exhibit typical characteristics ofα+βdual-phase *** microstructure of the alloys is more sensitive to Nb rather than *** as-cast alloys exhibit needle-likeα′martensite at a lower Nb content of 3 wt.%and lamellarα′martensite at an Nb content of 5 wt.%.Among the alloys,the Ti-3Nb-13Ta-2.r alloy shows the highest compressive strength(2.70±10 MPa)and compressive strain(74.3%±0.4%).This superior performance is due to the combination ofα+βdual-phase microstructure and stressinducedα"***,lattice distortion caused by Ta element also contributes to the compressive *** and Ta contents of the alloys strongly affect Young's modulus and tensile properties after *** as-rolled Ti-3Nb-13Ta-2.r alloy exhibits much lower modulus due to lower Nb content as well as moreα"martensite andβphase with a good combination of low modulus and high strength among all the designed *** probe tomography analysis reveals the element partitioning between theαandβphases in which Ta concentration is higher than Nb in theα***,the concentration of Ta is lower than that of Nb in theβphase,indicating that theβ-stability of Nb is higher than that of *** work proposes modernα+βdual-phase Ti-xNb-yTa-2.r alloys as a new concept to design novel biomedical Ti alloys with high performance.

关键词： Titanium alloy Phase stability Martensite Phase transformation Mechanical behavior

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Hydrothermal Synthesis, Crystal Structure and Luminescence Property of a New Binuclear Cage-like Samarium(Ⅲ) Complex Sm2.C7H4ClCOO)6(C(12.H8N2.2.H2.)2

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Chinese Journal of Structural Chemistry 2020年第2期39卷 350-355,188页

作者： LI wei PENG Gang lai Hua HUANG Geng LI Chang-Hong School of Chemistry and materials science Hengyang Normal UniversityHengyangHunan 421008China School of materials and Chemical Engineering Hunan Institute of TechnologyHengyangHunan 421002China Key Laboratory of Functional Metal-organic Compounds of Hunan Province Hengyang HengyangHunan 421008China

A new binuclear cage-like samarium(Ⅲ) complex Sm2.C7H4ClCOO)6(C(12.H8N2.2.H2.)2.1) with samarium(Ⅲ) nitrate, m-chlorobenzoic acid and 1,10-phenanthroline(phen) was synthesized. It crystallizes in the triclinic space group P1, with a = 8.02.7(2., b = 12.9037(4), c = 15.3764(5) ?, α = 85.373(3)o, β = 84.396(3)o, γ = 80.443(3)o, V = 1558.64(8) ?~3, Dc = 1.636 g/cm^3, Z = 2. F(000) = 806, the final GOOF = 1.051, R = 0.0754 and wR = 0.1388. The whole molecule consists of two samarium ions bridged by four m-chlorobenzoic acid anions. The Sm(III) ion is coordinated by eight atoms to give a distorted square antiprism coordination geometry. The TG analysis and fluorescent properties of 1 were studied.

关键词： binuclear samarium(III)complex thermal stability fluorescent property

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Effect of Cesium Modification on CuO/CeO2.Catalysts for the Catalytic Decomposition of N2.

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Chemical Research in Chinese Universities 2019年第1期35卷 47-52页

作者： GUO Peiwen QIN Feng sun Chao HUANG Zhen SHEN wei XU Hualong Shanghai Key Laboratory of Molecular Catalysis and Innovative materials Laboratory of Advanced Materials Collaborative Innovation Center of Chemistry for Energy MaterialsDepartment of Chemistry Fudan UniversityShanghai 200433P.R.China

A series of Cs-modified CuO/CeO2.mixed oxide catalysts was prepared for enhancing the stable activity of N2. *** was found that Cs modification promoted the catalytic performance of CuO/CeO2.catalysts significantly,The l%Cs-CuO/CeO2.catalyst exhibited the best activity,and the conversion of N2. reached 100%at 380℃ in the presence of 2. *** catalytic behaviors were investigated by means of XRD,N2.adsorption isotherms,XPS,H2.TPR(TPR:temperature-prograrmmed reduction),CO-IR,O2.TPD(TPD:temperature-programmed desorption)and diffused reflectance infrared Fourier transform spectorscopy(DRiFTs).The results revealed that Cs modification promoted the activity and the oxygen resistance by enhancing the desorption of surface oxygen species and increasing the content of Ce^3+.CO-DRIFTs revealed that Ce^3+could efficiently facilitate the regeneration of active Cu^+sites by an oxygen migration *** possible reaction mechanism was also discussed.

关键词： Cs-Modified CuO/CeO2 N2. decomposition Reaction mechanism

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Cobalt(Ⅱ)coordination polymers as anodes for lithium-ion batteries with enhanced capacity and cycling stability

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Journal of materials science & {2. 2018年第8期34卷 1412-1418页

作者： Yumei Luo Lixian sun Fen Xu Siyue wei Qingyong Wang Hongliang Peng Chonglin Chen Guangxi Key Laboratory of Information materials Guangxi Collaborative Innovation Center of Structure and Property for New Energy and MaterialsSchool of Material Science and EngineeringGuilin University of Electronic TechnologyGuilin541004China department of Physics and Astronomy Texas University at San AntonioUSA

Coordination polymer Co-btca （H4btca = 1,2.4,5-benzenetetracarbo ylic acid） was synthesized using a simply hydrothermal method. In particular, the as-prepared Co-btca was applied as an anode material for lithium-ion battery for the first time. Single crystal X-ray diffraction results indicated that the as- prepared Co-btca displayed unique layer structure, which was beneficial to transport Li ions and electrons. Also, owing to the porous structure and appropriate specific surface area, Co-btca electrode delivered a reversible capacity of 801.3 mA h/g after 50 cycles at a current density of 2.0 mA/g. The reversible capacity of 773.9 mA h/g was maintained after 2.0 cycles at a current density of 500 mA/g, exhibiting enhanced cycle stability. It also showed improved rate performance, making it a promising anode material and a new choice for lithium-ion batteries.

关键词： Lithium-ion battery Anode Coordination polymer Carboxylate

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