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Water dispersible hydroxyapatite nanoparticles functionalized by a family of aminoalkyl phosphates

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Chinese Chemical Letters 2015年第9期26卷 1121-1128页

作者： Yi-Rou Jiang Fu-Hua Sun Xiao-Yong Zhou Wei-Bo Kong xing-Yi Xie Department of Polymeric Biomaterials and Artificial Organs College of Polymer Science and EngineeringSichuan University

A series of aminoalkyi phosphates（AAP-n,with carbon number n ranging from 2 to 6） are used as surface modifiers to prepare hydroxyapatite *** resulting nanoparticles（Cn-HA） possess a coreshell structure where an ionized layer of calcium-（AAP-n） complex[^＋H3N-（CH2）n-OPO3Ca]encapsulates each hydroxyapatite ***-term colloidal stability is achieved due to the electrostatic repulsion among the suspending *** incorporation of AAP-n results in a preferential crystal growth along c-axis,showing an increasing aspect ratio of particles from C2-HA to *** cell culture using osteoblast-like MG63 cells shows no cytotoxicity associated with the as-prepared Cn-HA *** functional amino groups around the nanoparticles could be used to graft various organic chains to prepare homogeneous HA/polymer composites as bone grafting materials.

关键词： Hydroxyapatite Hydrocolloid Aminoalkyl phosphate Cytotoxicity

Dynamic Mechanical Behavior and Prediction for PP/POE Blends

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Chemical Research in Chinese Universities 2009年第4期25卷 573-578页

作者： YING Ji-ru XIE Xiao-lin ZHOU xing-ping ZHOU Hua-min LI De-qun State Key Laboratory of Plastic Forming Simulation and Die ＆ Mould Technology Wuhan 430074 P. R. China Hubei Key Laboratory of Materials Chemistry and Service Failure Department of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan 430074 P. R. China School of Chemical and Environmental Engineering Hubei University of Technology Wuhan 430068 P. R. China

Polypropylene（PP）/ethylene-octene copolymer（POE） blends were prepared with a twin-screw *** dynamic mechanical behavior were systematically *** results show that PP/POE blends are heterogeneities with a partial compatible two-phase structure,the glass transition temperature of PP phases in the blends tends to shift towards high temperature with increasing the POE content,and the glass transition temperature of POE phases shifts towards the low temperature with increasing the PP *** Kerner＇s dispersed phase model and co-continuous phase model can reasonably predict the visco-elasticity of PP/POE blends with different ***,the morphological structure of the blends can be estimated via comparing the predicted DMA behavior with the experimental data.

关键词： PP/POE blend Dynamic mechanical behavior Dispersed phase model Co-continuous phase model

Experimental and computational analysis of the structure-activity relationship of ionic gel electrolytes based on bistrifluoromethanesulfonimide salts for supercapacitors

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Journal of Materiomics 2024年第6期10卷 1222-1233页

作者： Wei Chen Ying Wei Xiuling Dong Zhong-Xia Wang Zheng xing Qingguo Zhang Xiang Liu College of Chemistry and Materials Engineering Bohai UniversityJinzhou121013LiaoningChina College of Chemistry and Chemical Engineering Gannan Normal UniversityGanzhou341000JiangxiChina Institute of Medicine&Chemical Engineering Zhenjiang CollegeZhenjiang212028JiangsuChina

Ionic gel(IG)electrolytes are emerging as promising components for the development of next-generation supercapacitors(SCs),offering benefits in terms of safety,cost-effectiveness,and *** ionic conductivity,stability,and mechanical properties of the gel electrolyte are relevant factors to be considered and the key to improving the performance of the ***,the structure–activity relationship between the internal structure of IGs and their SC properties is not fully *** the current study,the intuitive and regular structure–activity relationship between the structure and properties of IGs was revealed via combining computational simulation and *** terms of conductivity,the ionic liquid(IL)([EMIM][TFSI])in the IG has a high self-diffusion coefficient calculated by molecular dynamics simulation(MDS),which is conductive to transfer and then improves the *** radial distribution function of the MDS shows that the larger the g(r)between the particles in the polymer network,the stronger the *** stability,IGs based on[EMIM][TFSI]and[EOMIM][TFSI]ILs have higher density functional theory calculated binding energy,which is reflected in the excellent thermal stability and excellent capacitor cycle *** on the internal pore size distribution and stress-strain characterization of the gel network([ME3MePy][TFSI]and[BMIM][TFSI]as additives),the highly crosslinked aggregate network significantly reduces the internal mesoporous distribution and plays a leading role in improving the mechanical properties of the *** using this strategy,it will be possible to design the ideal structure of the IG and achieve excellent performance.

关键词： Ionic gel electrolytes Density functional theory Molecular dynamics simulation Self-diffusion coefficient Mean square displacement

Tensor Susceptibilities of QCD Vacuum and Parameterized Quark Propagator

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Communications in Theoretical Physics 2008年第3期49卷 717-722页

作者： ZHOU Li-Juan MENG Cheng-Ju PAN Ji-Huan LIU Bao-Rong MA Wei-xing Collaboration Group of Hadron Physics and Non-perturbative QCD Study Guangxi University of Technology Liuzhou 545006 China Department of Physics Hechi College Yizhou 546300 China Department of Physics Guangxi University Nanning 530004 China Institute of High Energy Physics the Chinese Academy of Sciences Beijing 100049 China

Based on the parameterized fully dressed quark propagator proposed by us, the tensor susceptibilities of QCD vacuum and quark vacuum condensates are investigated. Our predicted values of the tensor susceptibilities are in agreement with those predicted by many other theoretical models with QCD feature. The results also show that the tensor susceptibility of QCD vacuum strongly depends on flavor of quark but not sensitive to variation of quark vacuum condensates. However, the quark vacuum condensate is very sensitive to the change of cut-off-parameter μ^2 of the integration, that is, it depends on the separation point of perturbative and non-perturbative QCD region. The successful predictions clearly indicate the extensive validity of our parameterized fully dressed quark propagator used here.

关键词： QCD vacuum tensor susceptibilities quark propagator

Prognostic analysis of recurrence in children and adolescents with differentiated thyroid cancer

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Chinese Medical Journal 2020年第19期133卷 2281-2286页

作者： xing Wang Xiao-Lei Wang Department of Head and Neck surgery Cancer Hospital of the University of Chinese Academy of Sciences(Zhejiang Cancer Hospital)HangzhouZhejiang 310022China Institute of Cancer and Basic Medical(ICBM) Chinese Academy of SciencesHangzhouZhejiang 310022China Department of Head-Neck Surgery National Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021China.

Background:The standard treatment for pediatric differentiated thyroid carcinoma(DTC)still requires consideration because of a lack of clinical *** purpose of this study was to summarize the clinical experiences and explore the risk factors for postoperative recurrence through a retrospective analysis to develop better clinical strategies for pediatric ***:This study retrospectively analyzed children and adolescents with DTC who were treated between January 1999 and December 2014 at the Cancer Hospital,Chinese Academy of Medical *** results and outcomes were collected.A log-rank test of Kaplan-Meier curves and the Cox regression model were used to determine the factors associated with ***:Data of 150 patients were collected in this *** the follow-up,there was only one disease-related *** recurrence rates at 3,5,and 10 years were 13.6%,18.7%,and 28.6%,*** was a significant difference in the rate of recurrence according to age(P<0.001),extrathyroidal extension(P<0.001),lymph node metastasis(P=0.023),and invasion of the trachea and esophageal wall(P=0.004).Cox regression analysis demonstrated that age(P=0.006)and extrathyroidal extension(P=0.013)were significant dependent factors of post-operative ***:The prognosis of DTC in children and adolescents is favorable.A close follow-up is recommended because of the high recurrence rate.A comparatively higher recurrence rate was observed in the younger age group,and new age-based divisions may be needed to conveniently evaluate the possibility of recurrence.

关键词： Children and adolescents Differentiated thyroid cancer Recurrence

Inhibiting manganese(Ⅱ)from catalyzing electrolyte decomposition in lithium-ion batteries

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Journal of Energy Chemistry 2022年第2期31卷 1-8页

作者： Xuehuan Luo Lidan xing Jenel Vatamanu Jiawei Chen Jiakun Chen Mingzhu Liu Cun Wang Kang Xu Weishan Li Engineering Research Center of MTEES(Ministry of Education) Research Center of BMET(Guangdong Province)Engineering Lab.of OFMHEB(Guangdong Province)Key Lab.of ETESPG(GHEI)and Innovative Platform for ITBMD(Guangzhou Municipality)School of Chemistry and EnvironmentSouth China Normal UniversityGuangzhou 510006GuangdongChina Battery Science Branch Sensor and Electron Devices DirectorateU.S.Army Research LaboratoryAdelphiMD 20783United States

A once overlooked source of electrolyte degradation incurred by dissolved manganese(Ⅱ)species in lithium-ion batteries has been identified *** order to deactivate the catalytic activity of such manganese(II)ion,1-aza-12-crown-4-ether(A12C4)with cavity size well matched manganese(Ⅱ)ion is used in this work as electrolyte *** and experimental results show that stable complex forms between A12C4 and manganese(II)ions in the electrolyte,which does not affect the solvation of Li *** strong binding effect of A12C4 additive reduces the charge density of manganese(II)ion and inhibits its destruction of the PF_(6)^(-)structure in the electrolyte,leading to greatly improved thermal stability of manganese(II)ions-containing *** addition to bulk electrolyte,A12C4 additive also shows capability in preventing Mn^(2+) from degrading SEI on graphite *** bulk and interphasial stability introduced by A12C4 leads to significantly improved cycling performance of LIBs.

关键词： Manganese(Ⅱ)ions Electrolyte decomposition 1-Aza-12-crown-4-ether Thermal stability

Distribution of rare earth elements in PM10 emitted from burning coals and soil-mixed coal briquettes

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Journal of Environmental Sciences 2020年第11期32卷 96-101页

作者： Longyi Shao Lingli Chang Robert B.Finkelman Wenhua Wang Junxia Liu Jie Li Jiaoping xing Cong Hou 无 State Key Laboratory of Coal Resources and Safe Mining College of Geoscience and Surveying EngineeringChina University of Mining and Technology(Beijing)Beijing 100083China University of Texas Dallas RichardsonTX75080USA China Association of Circular Economy Beijing 100037China 2011 Collaborative Innovation Center of Jiangxi Typical Trees Cultivation and Utilization School of ForestryJiangxi Agricultural UniversityNanchang 330045China Hebei University of Economics and Business Shijiazhuang 050061China

Emission from burning coals is one of the major sources of the airborne particles in *** carried out a study on the rare earth elements(REEs)in the inhalable particulate matter(PM10)emitted from burning coals and soil-coal honeycomb briquettes with different volatile contents and ash yields in a combustion-dilution *** analysis indicates that the equivalent mass concentration of the PM10 emitted from burning the coals is higher than that emitted from burning the *** ICP-MS analysis indicates that the contents of total REEs in the coal-burning PM10 are lower than those in the briquetteburning *** addition,the contents of the light rare earth elements(LREEs)are higher than those of the heavy rare earth elements(HREEs)in the PM10 emitted from burning the coals and briquettes,demonstrating that the REEs in both the coal-burning and briquetteburning PM10 are dominated by *** higher contents of total REEs and LREEs in the coal-burning PM10 are associated with the higher ash yields and lower volatile contents in the raw coals.A comparative analysis indicates that the La/Sm ratios in the PM10 emitted from burning the coals and briquettes,being lower than 2,are lower than those in the particles from gasoline-powered vehicle emission.

关键词： Coal-burning emission PM10 Rare earth elements(REEs) Soil-mixed coal briquette Source apportionment La/Sm ratio

Revealing the dynamics of the alloying and segregation of Pt-Co nanoparticles via in-situ environmental transmission electron microscopy

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Nano Research 2023年第2期16卷 3055-3062页

作者： xing Li Shaobo Cheng Yanghua He Lixiang Qian Dmitri Zakharov Gang Wu Chongxin Shan Liang Zhang Dong Su Henan Key Laboratory of Diamond Optoelectronic Materials and Devices Key Laboratory of Material PhysicsSchool of Physics and MicroelectronicsZhengzhou UniversityZhengzhou 450052China Center for Functional Nanomaterials Brookhaven National LaboratoryUptonNY 11973USA Department of Chemical and Biological Engineering University at BuffaloThe State University of New YorkBuffaloNY 14260USA Center for Combustion Energy School of Vehicle and MobilityTsinghua UniversityBeijing 100084China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China

Thermal treatment is a general and efficient way to synthesize intermetallic catalysts and may involve complicated physical *** far,the mechanisms leading to the size and composition heterogeneity,as well as the phase segregation behavior in Pt-Co nanoparticles(NPs)are still not well *** in-situ environmental transmission electron microscopy,the formation dynamics and segregation behaviors of Pt-Co alloyed NPs during the thermal treatment were *** is found that Pt-Co NPs on zeolitic imidazolate frameworks-67-derived nanocarbon(NC)are formed consecutively through both particle migration coalescence and the Ostwald ripening *** existence of Pt NPs is found to affect the movement of Co NPs during their *** the help of theoretical calculations,the correlations between the composition and migration of the Pt and Co during the ripening process were *** complex alloying processes are revealed as key factors leading to the heterogeneity of the synthesized Pt-Co alloyed *** oxidation environment,the Pt-Co NPs become surface faceted gradually,which can be attributed to the oxygen facilitated relatively higher segregation rate of Co from the(111)*** work advances the fundamental understanding of design,synthesis,and durability of the Pt-based nanocatalysts.

关键词： intermetallic catalyst alloying ripening segregation dynamics environmental transmission electron microscopy(ETEM)

HYDRODYNAMIC ANALYSIS AND SIMULATION OF A SWIMMING BIONIC ROBOT TUNA

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Journal of Hydrodynamics 2007年第4期19卷 412-420页

作者： CHEN Hong ZHU Chang-an YIN Xie-zhen xing Xiao-zheng CHENG Gang College of Mechatronics and Control Engineering Shenzhen University Shenzhen 518060 China School of Engineering Science University of Science and Technology of China Hefei 230027 China

A dynamic model for undulatory locomotion was proposed to study the swimming mechanism of a developed bionic robot tuna. On the basis of inviscid hydrodynamics and rigid-body dynamics, the momentum and propulsive force required for propelling the swimming robot tuna＇s flexible body was calculated. By solving the established dynamic equations and efficiency formula, the swimming velocity and propulsive efficiency of the bionic robot tuna were obtained. The relationship between the kinematic parameters of the robot tuna＇s body curve and the hydrodynamic performances was established and discussed after hydrodynamic simulations. The results presented in this article can be used to increase the swimming speed, propulsive thrust, and the efficiency of underwater vehicles effectively.

关键词： undulatory locomotion swimming propulsive force efficiency body curve hydrodynamic simulations