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Journal of Environmental Sciences 2007年第6期19卷 714-718页

作者： HUANG Ze-chun AN Zhi-zhuang CHEN Tong-bin LEI Mei XIAO Xi-yuan LIAO Xiao-yong Centre for Environmental Remediation Institute of Geographical Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China

In order to understand the similarity or difference of inorganic As species uptake and transport related to phosphorus in Ashyperaccumulator, uptake and transport of arsenate （As（V）） and arsenite （As（Ⅲ）） were studied using Pteris vittata L. under sand culture. Higher concentrations of phosphate were found to inhibit accumulation of arsenate and arsenite in the fronds of P. vittata. The reduction in As accumulation was greater in old fronds than in young fronds, and relatively weak in root and rhizome. Moderate increases, from 0.05 to 0.3 mmol/L, in phosphate reduced uptake of As（Ⅲ） more than As（Ⅴ）, while the reverse was observed at high concentrations of phosphate （≥1.0 mmol/L）. Phosphate apparently reduced As transport and the proportion of As accumulated in fronds of P. vittata when As was supplied as As（Ⅴ）. It may in part be due to competition between phosphorus and As（Ⅴ） during transport. In contrast, phosphate had a much smaller effect on As transport when the As was supplied as As（Ⅲ）. Therefore, the results from present experiments indicates that a higher concentration of phosphate suppressed As accumulation and transport in P. vittata, especially in the fronds, when exposed to As（Ⅴ）, but the suppression of phosphate to As transport may be insignificant when P. vittata exposed to As（Ⅲ） under sand culture conditions. The finding will help to understand the interaction of P and As during their uptake process in P. vittata.

关键词： arsenate arsenite As species Pteris vittata L. phosphate transport uptake

Isolated diatomic Zn-Co metal–nitrogen/oxygen sites with synergistic effect on fast catalytic kinetics of sulfur species in Li-S battery

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Journal of Energy Chemistry 2023年第4期79卷 505-514页

作者： chun-Lei Song Qiao-Tong He Zhongyi Zeng Jing-Yan Chen Tian Wen Yu-Xiao Huang Liu-chun zhuang Wei Yi Yue-Peng Cai Xu-Jia Hong School of Chemistry South China Normal UniversityGuangzhou 510006GuangdongChina Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target&Clinical Pharmacology the NMPA and State Key Laboratory of Respiratory DiseaseSchool of Pharmaceutical Sciences&the Fifth Affiliated Hospital Guangzhou Medical UniversityGuangzhou 511436GuangdongChina

Lithium-sulfur batteries are severely restricted by low electronic conductivity of sulfur and Li_(2)S,shuttle effect,and slow conversion reaction of lithium polysulfides(LiPSs).Herein,we report a facile and highyield strategy for synthesizing dual-core single-atom catalyst(ZnCoN_(4)O_(2)/CN)with atomically dispersed nitrogen/oxygen-coordinated Zn-Co sites on carbon *** on density functional theory(DFT)calculations and LiPSs conversion catalytic ability,ZnCoN_(4)O_(2)/CN provides dual-atom sites of Zn and Co,which could facilitate Li^(+)transport and Li_(2)S diffusion,and catalyze LiPSs conversion more effectively than homonuclear bimetallic single-atom catalysts or their simple mixture and previously reported singleatom ***-S cell with ZnCoN_(4)O_(2)/CN modified separator showed excellent rate performance(789.4 mA h g^(-1)at 5 C)and stable long cycle performance(0.05%capacity decay rate at 6C with 1000cycles,outperforming currently reported single atomic catalysts for LiPSs *** work highlights the important role of metal active centers and provides a strategy for producing multifunctional dual-core single atom catalysts for high-performance Li-S cells.

关键词： Dual-core single-atom catalysts Lithium polysulfides Fast catalytic kinetics Li_(2)S diffusion Li-S battery

The structure and elasticity of phase B silicates under high pressure by first principles simulation

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Chinese Physics B 2018年第4期27卷 445-450页

作者： Lei Liu Li Yi Hong Liu Ying Li chun-Qiang zhuang Long-Xing Yang Gui-Ping Liu Key Laboratory of Earthquake Prediction Institute of Earthquake Science China Earthquake Administration Beijing 100036 China National Key Laboratory of Shock Wave and Detonation Physics Mianyang 621000 China Institute of Microstructure and Properties of Advanced Materials Beijing University of Technology Beijing 100124 China

The structures and elasticities of phase B silicates with different water and iron（Fe） content are obtained by firstprinciples simulation to understand the effects of water and Fe on their properties under high *** lattice constants a and b decrease with increasing water *** the contrary,c increases with increasing water *** the other hand,the b and c decrease with increasing Fe content while a increases with increasing Fe *** decrease of M（metal）–O octahedral volume is greater than the decrease of SiO polyhedral volume over the same pressure *** density,bulk modulus and shear modulus of phase B increase with increasing Fe content and decrease with increasing water *** compressional wave velocity（Vp） and shear wave velocity（Vs） of phase B decrease with increasing water and Fe *** comparisons of density and wave velocity between phase B silicate and the Earth typical structure provide the evidence for understanding the formation of the X-discontinuity zone of the mantle.

关键词： structural and elastic properties phase B silicates high pressure first principles simulation

An equivalent-tool theory for acoustic logging and applications

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Applied Geophysics 2011年第1期8卷 69-78,96页

作者： Su Yuan-Da Tang Xiao-Ming Hei Chuang zhuang chun-Xi China University of Petroleum （East China） Qingdao 266555 China.

The influence of an acoustic logging tool on borehole guided wave propagation should be considered in the processing and inversion of the guided waves for formation acoustic property estimation. This study introduces an equivalent-tool theory that models the tool response using an elastic rod with an effective modulus and applies the theory to multipole acoustic logging for both wireline and logging while drilling （LWD） conditions. The theory can be derived by matching the tool’s acoustic impedance/conductance to that of the multipole acoustic wavefield around the tool, assuming that tool radius is small compared to wavelength. We have validated the effectiveness and accuracy of the theory using numerical modeling and its practicality using field data. In field data applications, one can calibrate the tool parameters by fitting the theoretical dispersion curve to field data without having to consider the actual tool’s structure and composition. We use a dispersion correction example to demonstrate an application of the simple theory to field data processing and the validity of the processing result.

关键词： Equivalent theory acoustic tool modeling impedance match guided wave

Home-based nursing for improvement of quality of life and depression in patients with postpartum depression

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World Journal of Clinical Cases 2020年第20期8卷 4785-4792页

作者： chun-Yu zhuang Sheng-Ying Lin Chen-Jia Cheng Xiao-Jing Chen Hui-Ling Shi Hong Sun Hong-Yu Zhang Mian-Ai Fu Department of Nursing Haikou Maternal and Child Health HospitalHaikou 570203Hainan ProvinceChina Department of Hepatobiliary Surgery Hainan Provincial People's HospitalHaikou 570311Hainan ProvinceChina Department of Medicine Haikou Maternal and Child Health HospitalHaikou 570203Hainan ProvinceChina Department of Care Medicine Haikou Maternal and Child Health HospitalHaikou 570203Hainan ProvinceChina Department of Midwifery School of International NursingHainan Medical CollegeHaikou 570203Hainan ProvinceChina Department of Reproductive Medicine Haikou Maternal and Child Health HospitalHaikou 570203Hainan ProvinceChina

BACKGROUND Postpartum depression is a common mental illness in puerpera,with an incidence of approximately 3.5%-33.0%abroad,and the incidence of postpartum depression in China is higher than the international level,reaching 10.0%-38.0%.Providing effective nursing care in clinical nursing activities is one of the key points of obstetrical ***,little research has been designed to investigate the positive role of home-based nursing in the prevention of postpartum *** To study the effect of home-based nursing for postpartum depression patients on their quality of life and *** The clinical data of 92 patients with postpartum depression treated at our hospital were retrospectively *** patients were grouped according to the nursing methods used;40 patients receiving basic nursing were included in a basic nursing group,and 52 receiving home-based nursing were included in a home-based nursing *** and anxiety were evaluated and compared between the two *** estradiol(E2),serotonin(5-hydroxytryptamine,5-HT),and progesterone(PRGE)levels were *** The SAS and SDS scores of the home-based nursing group were significantly lower than those of the basic nursing group(P<0.05).The E2 and 5-HT levels of the home-based nursing group were significantly higher than those of the basic nursing group,but the PRGE level was significantly lower than that of the basic nursing *** GQOLI-74 scores(material,social,somatic,and psychological)and nursing satisfaction were significantly higher in the home-based nursing group(P<0.05).CONCLUSION Postpartum depression through home-based nursing can effectively alleviate depression and improve the quality of life of patients,help modulate their serum E2,5-HT,and PRGE levels,and improve their satisfaction with nursing care.

关键词： Postpartum depression Home-based care Depression Quality of life Estradiol Progesterone

Design,synthesis and structure-activity relationship of 4,5-dihydropyrrolo[3,4-c]pyrazol-6(1H)-ones as potent p53-MDM2 inhibitors

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Chinese Chemical Letters 2017年第2期28卷 422-425页

作者： Wei-Huang Zhou Xi-Guo Xu Jin Li Xiao Min Jian-Zhong Yao Guo-Qiang Dong chun-Lin zhuang Zhen-Yuan Miao Wan-Nian Zhang School of Pharmacy Ningxia Medical University School of Pharmacy Second Military Medical University

In the past decade,the p53-MDM2 protein-protein interaction by small molecules has been confirmed as a successful strategy for cancer *** our previous work,pyrrolo[3,4-c]pyrazol-6（1H）-ones were found to be potent p53-MDM2 *** optimization and structure-activity relationship studies were described in the present *** result revealed that benzyl group on position N1 of imidazole and bromine on C4-phenyl of pyrrolidone showed higher inhibitory *** vitro antiproliferative assay demonstrated the potent p53-MDM2 inhibitor 5c with 4-fold selectivity for U2 OS and Saos-2 *** data indicated that 4,5-dihydropyrrolo[3,4-c]pyrazol-6（1H）-one moiety is a valuable scaffold for further development of p53-MDM2 inhibitors.

关键词： p53-MDM2 Protein-protein interaction Inhibitors Drug design Structure-activity relationships Antiproliferative

Layered oxide cathodes for sodium-ion batteries:microstructure design,local chemistry and structural unit

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Science China Chemistry 2024年第1期67卷 191-213页

作者： Ling-Yi Kong Han-Xiao Liu Yan-Fang Zhu Jia-Yang Li Yu Su Hong-Wei Li Hai-Yan Hu Yi-Feng Liu Ming-Jing Yang zhuang-chun Jian Xin-Bei Jia Shu-Lei Chou Yao Xiao Institute for Carbon Neutralization College of Chemistry and Materials EngineeringWenzhou UniversityWenzhou 325035China

Because of the low price and abundant reserves of sodium compared with lithium,the research of sodium-ion batteries(SIBs)in the field of large-scale energy storage has returned to the research *** oxides distinguish themselves from the mains cathode materials of SIBs owing to their advantages such as high specific capacity,simple synthesis route,and environmental ***,the commercial development of the layered oxides is limited by sluggish kinetics,complex phase transition and poor air *** on the research ideas from macro-to micro-scale,this review systematically summarizes the current optimization strategies of sodium-ion layered oxide cathodes(SLOC)from different dimensions:microstructure design,local chemistry regulation and structural unit *** the dimension of microstructure design,the various structures such as the microspheres,nanoplates,nanowires and exposed active facets are prepared to improve the slow kinetics and electrochemical ***,from the view of local chemistry regulation by chemical element substitution,the intrinsic electron/ion properties of SLOC have been enhanced to strengthen the structural ***,the optimization idea of endeavors to regulate the physical and chemical properties of cathode materials essentially is put forward from the dimension of structural unit *** opinions and strategies proposed in this review will provide some inspirations for the design of new SLOC in the future.

关键词： sodium-ion batteries layered oxide cathodes microstructure design local chemistry structural unit

Investigation on Thermal and Dimensional Stability of Epoxy Resin In-Situ Modified by Cyanate Ester Resin and Polydimethylsiloxane

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上海航天（中英文） 2022年第1期39卷 150-161页

作者： ZHANG Zhiyun HE Yannan HOU Jinsen zhuang chun TANG Jinmei YU Zhiqiang Department of Materials Science Fudan UniversityShanghai 200433China Shanghai Composites Science&Technology Co. Ltd.Shanghai 201112China

The thermal and dimensional stability of epoxy resin(EP)in-situ modified by cyanate ester(CE)and polydimethylsiloxane(PDMS)are investigated by means of experiments and numerical *** gravimetric analysis(TGA)and differential scanning calorimeter(DSC)are used to analyze the heat resistance of the modified *** dimensional stability is characterized by the volume shrinkage of the series PDMS/CE/EP obtained by the density *** chemical structure of the PDMS/CE/EP is analyzed by Fourier transform infrared spectroscopy(FTIR).The results of TGA and DSC indicate that the thermal stability of PDMS/CE/EP decreases firstly and then increases with the increase in the amount of *** addition of PDMS shows a slight effect on the thermal *** 40%CE makes the blending system exhibit the lowest initial decomposition temperature,which reduces by 15.5%and 40.8%compared with pure EP and CE,*** FTIR results suggested that the influence of CE on the thermal stability of the modified EP is mainly ascribed to the generation of oxazolidinone ring with low thermal stability and the increase in the triazine ring with high thermal *** volume shrinkage measurement results show that the introduction of CE and PDMS are both beneficial to the improvement of the dimensional stability of the blending *** in-situ addition of 80%CE shows the lowest volume shrinkage of6.11%.The thermal stress distribution of PDMS/CE/EP generated during the solidification process is simulated by the finite element *** results suggested that the introduction of 80%CE into EP results in the lowest thermal stress in the blending system,which indicates that the system has the lowest volume shrinkage,which agrees well with the experimental results.

关键词： epoxy resin and cyanate ester resin and polydimethylsiloxane(PDMS/CE/EP)blending system in-situ modification thermal stability volume shrinkage finite element analysis

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热膜测试技术在涡轮叶栅边界层测量中的应用

推进技术 2014年第9期35卷 1227-1233页

作者：庄纯青刘火星北京航空航天大学能源与动力工程学院航空发动机气动热力国防科技重点实验室北京100191

为了更加精确地测量附面层流动状态,并验证表面热膜测试技术的可靠性,利用表面热膜测量了低雷诺数定常来流条件下高负荷涡轮叶栅通道内叶片吸力面附面层的流动状态,并与表面静压实验测得结果进行对比。结果表明,利用表面热膜测得的准壁... 详细信息

为了更加精确地测量附面层流动状态,并验证表面热膜测试技术的可靠性,利用表面热膜测量了低雷诺数定常来流条件下高负荷涡轮叶栅通道内叶片吸力面附面层的流动状态,并与表面静压实验测得结果进行对比。结果表明,利用表面热膜测得的准壁面剪切力以及相关的统计参数能够准确捕捉到附面层分离泡和转捩的位置,对于高负荷低压涡轮叶型附面层流动测量是可靠有效的。

关键词：表面热膜高负荷低压涡轮分离转捩

Tissue array for Tp53,C-myc,CCND1 gene over-expression in different tumors

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World Journal of Gastroenterology 2008年第47期14卷 7199-7207页

作者： Guo-Yan Liu Qi Luo Bin Xiong Chao Pan Ping Yin Hong-Feng Liao Wei-chun zhuang Hong-Zhi Gao Zhongnan Hospital Wuhan UniversityWuhan 430071 China The General Surgery of the AffiliatedZhongshan Hospital of Xiamen University The Digest DiseaseResearch Institution of Xiamen University Xiamen 361004Fujian Province China Department of GeneralHong-Feng Liao Wei-ChunSurgery Affiliated ZhongshanHospital of Xiamen University Digest Disease ResearchInstitute of Xiamen University Xiamen 361004 FujianProvince. China Zhongnan Hospital Wuhan University Wuhan430071 Hubei Proyince China The Second Affiliated Hospital of FujianMedical University Fujian Province China

AIM:To rapidly detect molecular alterations in different malignancies and investigate the possible role of Tp53,C-myc,and CCND1 genes in development of tumors in human organs and their adjacent normal tissues,as well as the possible relation between well-and poorly-differentiated ***:A tissue array consisting of seven different tumors was *** tissue array included 120 points of esophagus,120 points of stomach,80 points of rectum,60 points of thyroid gland,100 points of mammary gland,80 points of liver,and 80 points of *** of Tp53,C-myc,and CCND1 were determined by RNA in situ hybridization.3' terminal digoxin-labeled anti-sense single stranded oligonucleotide and locked nucleic acid modifying probe were ***:The expression level of Tp53 gene was higher in six different carcinoma tissue samples than in paracancerous tissue samples with the exception in colon carcinoma tissue samples(P < 0.05).The expression level of CCND1 gene was significantly different in different carcinoma tissue samples with the exception in esophagus and colon carcinoma tissue *** expression level of C-myc gene was different in esophagus carcinoma tissue samples(c2 = 18.495,P = 0.000),stomach carcinoma tissue samples(c2 = 23.750,P = 0.000),and thyroid gland tissue samples(c2 = 10.999,P = 0.004).The intensity of signals was also different in different carcinoma tissue samples and paracancerous tissue ***:Over-expression of the Tp53,CCND1,and C-myc genes appears to play a role in development of human cancer by regulating the expression of ***53,CCND1 and C-myc genes are significantly correlated with the development of different carcinomas.

关键词： Tp53 C-myc CCND1 Tissue microarray RNA in situ hybridization