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非静水压作用下石膏电学性质的理论研究

原子与分子物理学报 2025年第6期42卷 129-135页

作者：周梅吴雷罗小松何宗润贵州民族大学物理与机电工程学院贵阳550025 重庆大学能源与动力工程学院重庆400044

地球内部广泛存在着差应力,这些外在因素的存在影响着矿物的性质,而矿物的电学性质与结构相变息息相关.为了更加了解地球内部结构与动力学过程,采用第一性原理方法,在等效平衡压0~10 GPa范围内计算地球内部浅层矿物石膏在静水压和非静... 详细信息

地球内部广泛存在着差应力,这些外在因素的存在影响着矿物的性质,而矿物的电学性质与结构相变息息相关.为了更加了解地球内部结构与动力学过程,采用第一性原理方法,在等效平衡压0~10 GPa范围内计算地球内部浅层矿物石膏在静水压和非静水压条件下的电学性质.计算结果表明:静水压和非静水压条件下无水石膏的密度和带隙变化基本一致,但二水石膏的密度和带隙在非静水压为6 GPa附近发生突变,这可能是由于非静水压环境使晶体结构更容易发生畸变,更有利于水分子氢键网络的重新排列和CaSO_(4)层间结构的塌缩,因此非静水压下可能更加有利于二水石膏在高温高压下的脱水反应.这对理解地幔中矿物的脱水和储水产生重大的影响,为理解地幔中矿物的脱氢和储水提供理论依据.

关键词：差应力石膏电学性质第一性原理

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Vanishing viscosity limits for the free boundary problem of compressible viscoelastic fluids with surface tension

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Science China Mathematics 2023年第6期66卷 1263-1300页

作者： Xumin gu Yu mei School of Mathematics Shanghai University of Finance and EconomicsShanghai 200433China School of Mathematics and Statistics Northwestern Polytechnical UniversityXi'an 710129China

We consider the free boundary problem of compressible isentropic neo-Hookean viscoelastic fluid equations with surface *** the physical kinetic and dynamic conditions proposed on the free boundary,we investigate the regularity of classical solutions to viscoelastic fluid equations in Sobolev spaces which are uniform in viscosity and justify the corresponding vanishing viscosity *** key ingredient of our proof is that the deformation gradient tensor in Lagrangian coordinates can be represented as a parameter in terms of the flow map so that the inherent structure of the elastic term improves the uniform regularity of normal derivatives in the limit of vanishing *** result indicates that the boundary layer does not appear in the free boundary problem of compressible viscoelastic fluids,which is different from the case studied by mei et al.(2018)for the free boundary compressible Navier-Stokes system.

关键词： free boundary viscoelastic fuid vanishing viscosity compressible fuid elastodynamics

Analysis of the anti-T2DM components in dichloromethane fraction of Schisandra sphenanthera and its mechanism

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Traditional Medicine Research 2025年第1期10卷 27-43页

作者： Shi-Bo Feng Hai-Hui Jiang Hui-Li Kang Yi Jiang Hua-Wei Zhang xiao-mei Song Yu-Ze Li Wen-Li Huang Dong-Dong Zhang Chong Deng School of Pharmacy Shaanxi University of Chinese MedicineXianyang 712046China School of Pharmacy and Shaanxi Qinling Application Development and Engineering Center of Chinese Herbal Medicine Shaanxi University of Chinese MedicineXianyang 712046China Key Laboratory for Research and Development of“Qin Medicine”of Shaanxi Administration of Traditional Chinese Medicine Xianyang 712046China Shaanxi Key Laboratory of Research and Application of“Taibai Qi Yao” Xianyang 712046China

Background:The type 2 diabetes mellitus(T2DM)pharmacodynamic study of various parts of Schisandra sphenanthera was conducted in the previous stage,and it was found that dichloromethane extracted part(SDP)had a significant hypoglycemic ***,the components of SDP were analyzed,and the specific mechanism of its anti-T2DM was ***:We used a high-fat,high-sugar diet in combination with streptozotocin to induce a T2DM rat model,and the model rats were divided into two groups according to body weight and blood ***,oral glucose tolerance test,fasting blood glucose,low density lipoprotein cholesterol,superoxide dismutase,insulin,glycated hemoglobin,total cholesterol,nonesterified free fatty acids,alanine aminotransferase,high-density lipoprotein cholesterol,aspartate aminotransferase,malondialdehyde,and glutathione peroxidase were measured,organ indices were calculated,and pathological sections of pancreas and liver were *** 16S rRNA V3–V4 region of intestinal flora was sequenced to explore the effect of SDP on biochemical indicators and intestinal *** on the above indicators,the anti-T2DM mechanism of SDP in Schisandra sphenanthera was ***:After six weeks of administration,the biochemical indices of diabetic rats were diminished compared to the control *** SDP could significantly increase the gut microbialα-diversity index,resulting in significant changes in the flora of T2DM rats,with increased richness and diversity,reduced harmful flora,and significantly back-regulated the levels of acetic acid,propionic acid,and butyric ***:SDP can improve the symptoms associated with elevated blood glucose,dyslipidemia,elevated fasting insulin levels,and damaged glucose tolerance in *** against T2DM may be through the control of intestinal flora to normalize and exert anti-diabetic effect;its main active components may be lignans and terpenoids.

关键词： Schisandra sphenanthera T2DM intestinal flora HPLC

Zinc extraction from zinc oxidized ore using(NH4)2SO4 roasting−leaching process

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International Journal of Minerals,Metallurgy and Materials 2020年第11期27卷 1471-1481页

作者： xiao-yi Shen Hong-mei Shao Ji-wen Ding Yan Liu Hui-min gu Yu-chun Zhai Key Laboratory for Ecological Utilization of Multimetallic Mineral of Ministry of Education School of MetallurgyNortheastern UniversityShenyang 110819China School of Environmental and Chemical Engineering Shenyang Ligong UniversityShenyang 110159China School of Computer Science and Engineering Northeastern UniversityShenyang 110819China

An improved method of(NH4)2SO4 roasting followed by water leaching to utilize zinc oxidized ores was *** operating parameters were obtained by investigating the effects of the molar ratio of(NH4)2SO4 to zinc,roasting temperature,and holding time on zinc *** roasting process followed the chemical reaction control mechanism with the apparent activation energy value of 41.74 kJ·mol^−*** transformation of mineral phases in roasting was identified by X-ray diffraction analysis combined with thermogravimetry–differential thermal analysis *** water leaching conditions,including the leaching temperature,leaching time,stirring velocity,and liquid-to-solid ratio,were discussed,and the leaching kinetics was *** reaction rate was obtained under outer diffusion without product layer control;the values of the apparent activation energy for two stages were 4.12 and 8.19 kJ·mol^−*** maximum zinc extraction ratio reached 96%while the efficiency of iron extraction was approximately 32%under appropriate *** work offers an effective method for the comprehensive use of zinc oxidized ores.

关键词： zinc oxidized ore ammonium sulfate roasting,water leaching kinetics mechanism extraction ratio

Trisubstituted alkenes featuring aryl groups:stereoselective synthetic strategies and applications

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Science China Chemistry 2023年第5期66卷 1261-1287页

作者： Meng-Yao Li Shuyang Zhai xiao-mei Nong Ao gu Jiatong Li guo-Qiang Lin Yingbin Liu Shanghai Cancer Institute Renji Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai 200127China Shanghai Institute of Organic Chemistry Chinese Academy of SciencesShanghai 200032China School of Basic Medicine and Clinical Pharmacy China Pharmaceutical UniversityNanjing 211198China

In recent years,the synthesis and application of alkenes have attracted increased ***(TriPEs)have lower molecular torsion than tetraphenylethenes(TPEs),which helps to balance the degree of conjugation and the aggregation-induced emission(AIE)*** geometry of double bonds has a significant impact on ***,it is essential to provide a comprehensive summary of the stereoselective synthetic strategies for trisubstituted *** this review,common strategies for the stereoselective synthesis of alkenes are described,with an emphasis on the origin of stereoselectivity and the types of *** addition,the AIE properties of TriPE and its applications in optoelectronic devices,stimuli-responsive materials,sensors,and therapies were discussed.

关键词： trisubstituted alkenes stereoselective synthesis aggregation-induced emission transition metal catalysis

Effect of intensive multifactorial treatment on the intima-media thickness of large arteries in patients with new-onset type 2 diabetes mellitus

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2012年第5期13卷 378-385页

作者： xiao-hong ZHAO Zhe-rong XU Qin ZHANG Hai-feng gu Yun-mei YANG Department of Geriatrics the First Affiliated HospitalSchool of MedicineZhejiang UniversityHangzhou 310003China

Objective: To quantify the changes in blood glucose, blood lipids, blood pressure, and the intima-media thickness (IMT) of large arteries in patients with new-onset type 2 diabetes mellitus who received either intensive multifactorial treatment or conventional treatment. Methods: Two-hundred and ten patients with new-onset type 2 diabetes mellitus were randomly assigned to two groups: an intensive treatment group (n=110) and a conventional treatment group (n=100). Fasting blood glucose (FBG), glycosylated hemoglobin A1c (HbA1c), blood pressure, blood lipids [total cholesterol (TC), triglyceride (TG), low-density lipoprotein C (LDL-C), and high-density lipoprotein C (HDL-C)], and IMTs of large arteries (carotid, iliac, and femoral arteries) were determined before and at one and two years after starting treatment. The patients in the conventional treatment group received routine diabetes management in our outpatient department. Targets were established for patients in the intensive treatment group. Their blood glucose, blood lipids, and blood pressure levels were regularly monitored and therapeutic regimens were adjusted for those whose measurements did not meet the target values until all the parameters met the established targets. Within-group and between-group differences were evaluated. Results: A significantly greater percentage of patients in the intensive treatment group had LDL-C levels that reached the target value one year after starting treatment than those in the conventional treatment group (52.04% vs. 33.33%, P<0.05). No significant differences were found be- tween groups for FBG, HbA1c, blood pressure, TG, TC, or HDL-C. The percentages of patients with TG (51.02% vs. 34.48%), TC (52.04% vs. 33.33%), and LDL-C (61.22% vs. 43.67%) who met the respective target values in the in- tensive treatment group were all significantly higher than the corresponding percentages in the conventional treatment group two years after starting treatment (P<0.05). There were

关键词： Type 2 diabetes mellitus Intensive treatment Intima-media thickness (IMT) Large arteries

Hydrolysis mechanism of Li-argyrodite Li_(6)PS_(5)Cl in air

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Rare Metals 2023年第1期42卷 47-55页

作者： Jin Zhang xiao gu School of Physical Science and Technology Ningbo UniversityNingbo315211China

All-solid-state lithium-ion batteries(ASSLBs) with solid state electrolytes(SSE),regarded as next-generation battery system,have attracted most of the research and industrial interest in the electrochemical storage field due to their higher energy density,wider voltage window,safety and other superior *** promising solid-sate electrolytes with high ionic conductivity and excellent electrochemical stability plays the key role in practicing ***-argyrodites show high ionic conductivity and stable electrochemical properties,which are advantageous to ASSLIBs.

关键词： battery electrochemical conductivity

The Products of Three Theta Functions and the General Cubic Theta Functions

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Acta Mathematica Sinica,English Series 2010年第6期26卷 1115-1124页

作者： xiao mei YANG Department of Mathematics East China Normal University Shanghai 200241 P. R. China

In this paper we establish two theta function identities with four parameters by the theory of theta functions. Using these identities we introduce common generalizations of Hirschhorn-Garvan-Borwein cubic theta functions, and also re-derive the quintuple product identity, one of Ramanujan＇s identities, Winquist＇s identity and many other interesting identities.

关键词： Jacobi theta function quintuple product identity Winquist's identity Ramanujan identity

FHA2 is a plant-specific ISWI subunit responsible for stamen development and plant fertility^FA

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Journal of Integrative Plant Biology 2020年第11期62卷 1703-1716页

作者： Bo-Wen gu Lian-mei Tan Cui-Jun Zhang xiao-mei Hou Xue-Wei Cai She Chen Xin-Jian He College of Life Sciences Beijing Normal UniversityBeijing 100875China National Institute of Biological Sciences Beijing 102206China Tsinghu a Institute of Multidisciplinary Biom edical Research Tsinghua UniversityBeijing 10084China

Imitation Switch(ISWI)chromatin remodelers are known to function in diverse multi-subunit complexes in yeast and ***,the constitution and function of ISWI complexes in Arabidopsis thaliana remain *** this study,we identified forkheadassociated domain 2(FHA2)as a plant-specific subunit of an ISWI chromatin-remodeling complex in *** in vivo and in vitro analyses,we demonstrated that FHA2 directly binds to RLT1 and RLT2,two redundant subunits of the ISWI complex in *** stamen filament is shorter in the fha2 and rlti/2 mutants than in the wild type,whereas their pistil lengths are *** shorter filament,which is due to reduced cell size,results in insufficient pollination and reduced *** rlt1/2 mutant shows an early-floweringphenotype,whereas the phenotype is not shared bythe fha2 *** with the functional specif-icity of FHA2,our RNA-seq analysis indicated that thefha2 mutant affects a subset of RLT1/2-regulated genesthat does not include genes involved in the regulation offlowering *** study demonstrates that FHA2functions as a previously uncharacterized subunit of theArabidopsis ISwI complex and is exclusively involved inregulating stamen development and plant fertility.

关键词： plant Arabidopsis shorter