检索结果-南通市图书馆

Graphdiyne(C_(n)H_(2n-2))as an"electron transfer bridge"boosting photocatalytic hydrogen evolution over Zn_(0.5)Co_(0.5)S/MoS_(2)S-scheme heterojunction

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2024年第5期43卷 1999-2014页

作者： mei Li jing-Zhi Wang Zhi-Liang Jin School of Chemistry and Chemical Engineering North Minzu UniversityYinchuan 750021China School of Chemistry and Chemical Engineering Ningxia Key Laboratory of Solar Chemical Conversion TechnologyKey Laboratory for Chemical Engineering and TechnologyState Ethnic Affairs CommissionNorth Minzu UniversityYinchuan 750021China

In the process of photocatalytic water cracking,the migration rate and utilization rate of photogenerated charges determine the hydrogen evolution performance of the *** this paper,a carbon isotope superconducting material graphdiyne(GDY)is prepared by mechanical ball milling and introduced into the S-scheme heterojunction Zn_(0.5)Co_(0.5)S/MoS_(2)inorganic *** terms of hydrogen evolution kinetics,GDY acts as an electron bridge,not only accelerating the migration of photogenerated carriers but also improving the utilization of photogenerated ***,the large twodimensional layer provides more loading and anchoring points for Zn_(0.5)Co_(0.5)S/MoS_(2),which increases the number of active *** ternary composite catalyst 20%GDY/Zn_(0.5)Co_(0.5)S/MoS_(2)(20-GCSM)generates 69.94μmol of hydrogen(5 h)in triethanolamine *** is 2.97 and1.80 times higher than Zn_(0.5)Co_(0.5)S and Zn_(0.5)Co_(0.5)S/MoS_(2),*** the cyclic experiment,it still has stable hydrogen evolution performance after standing for24 h(under dark conditions).In addition,the potential mechanism of photocatalytic hydrogen evolution is demonstrated through in-situ X-ray photoelectron *** work provides a reference for further research in the field of introducing carbon materials into photocatalytic systems and improving the utilization of photogenerated charges.

关键词： Graphdiyne S-scheme heterojunction Electron transfer bridge Hydrogen production

Lifestyle intervention for gestational diabetes mellitus prevention: A cluster-randomized controlled study

在线全文

学校读者我要写书评

暂无评论

Chronic Diseases and Translational Medicine 2015年第3期1卷 -页

作者： Shuang Wang jing-mei ma Hui-Xia Yang Department of Obstetrics and Gynaecology Peking University First Hospital Beijing 100034 China

Objective: The study was to examine whether gestational diabetes mellitus (GDM) can be prevented by early trimester lifestyle counseling in a high-risk ***: From September 2012 to January 2013, 1664 pregnancies in the Department of Obstetrics and Gynecology of First Hospital of Peking University were enrolled in the study during their first prenatal care visit before the 8 gestational weeks visit and asked to fill out a questionnaire on GDM risk *** to the questionnaire and medical records, those with at least one risk factor of GDM were included in the intervention study and randomly allocated to two groups, intervention group and control *** prenatal care was offered, while standardized two-step lifestyle intervention was provided to the intervention group during 6-8 gestational weeks, and at 12-13 gestational weeks, enforcement intervention based on maternal anthropometrics were *** groups were followed until 75 g oral glucose tolerance test (OGTT) testing at 24-28 gestational *** weight gain after intervention and the prevalence of GDM were used to evaluate the ***: (1) According to the International Association of Diabetes and Pregnancy Study Groups (IADPSG) criteria, the positive rate of GDM for the intervention group was 17.16％ (23/134), lower than the control group which was 23.91％ (33/138), P =0.168.(2) The weight gain during the first and second trimester for the intervention group was (1.38 ± 2.34) kg and (5.51 ± 2.18) kg, lower than in the control group which was (1.41 ± 2.58) kg and (5.66 ± 2.25) kg, (P =0.905, P =0.567).(3) Positive rate of GDM for those fasting plasma glucose (FPG) ≥5.1 mmol/L during early pregnancy was 11/36 (30.55％) for the intervention group that was lower than 17/37 (45.95％) for the control group, but the statistical difference was not significant (P =0.076).Conclusion: The positive rate of GDM could be reduced by a certain amount lifestyle intervention from the b

关键词： Gestational diabetes mellitus Risk factor Lifestyle intervention

Insights into the dwarfing mechanism of pear(Pyrus betulaefolia) based on anatomical and structural analysis using X-ray scanning

在线全文

学校读者我要写书评

暂无评论

Horticultural Plant Journal 2024年第2期10卷 355-366页

作者： Lili Dong Chuxuan Yang jing Wang jingjing Li mei Zhao Dingli Li Zhiyun Qiu Chunhui ma Zhenhua Cui College of Horticulture Qingdao Agricultural UniversityQingdaoShandong 266109China College of Landscape and Forestry Qingdao Agricultural UniversityQingdaoShandong 266109China

The lack of a suitable rootstock to control scion growth has limited the development of high-density plantations in pear production, which is partly attributed to poor understanding of the dwarfing mechanism. In the present study, the rootstock of the dwarf-type pear (Pyrus betulaefolia)PY-9’ was identified and used as the material for anatomical ***-9’ grew to half the tree height of the normal cultivar Zhengdu’, along with fewer internodes and shorter length. Significant differences in growth rate betweenPY-9’ andZhengdu’ were detected at approximately 30 days after full bloom, which corresponded with the time of the greatest difference in water potential between the dwarf and normal ***-9’ showed a higher photosynthetic rate thanZhengdu’. Anatomical analysis showed thatPY-9’ had higher area ratios of both phloem and xylem and more developed vascular tissues thanZhengdu’. The three-dimensional reconstructed skeleton of the xylem from X-ray computed tomography scanning revealed greater intervessel connectivity inZhengdu’ than inPY-9’, which could contribute to the more vigorous growth ofZhengdu’. This study thus provides the first comparison of the microstructural properties of xylem elements between a dwarfing-type and vigorous-type pear rootstock, providing new insights into the dwarfing mechanism in pear and facilitating breeding of dwarf pear rootstocks to increase crop productivity.

关键词： Pyrus betulaefolia Anatomical analysis Dwarfing mechanism Intervessel connectivity Rootstock

KAT7/HMGN1 signaling epigenetically induces tyrosine phosphorylation-regulated kinase 1A expression to ameliorate insulin resistance in Alzheimer’s disease

在线全文

学校读者我要写书评

暂无评论

World Journal of Psychiatry 2024年第3期14卷 445-455页

作者： Qun-Shan Lu Lin ma Wen-jing Jiang Xing-Bang Wang mei Lu Department of Geriatric Medicine Qilu Hospital of Shandong UniversityJinan 250012Shandong ProvinceChina Key Laboratory of Cardiovascular Proteomics of Shandong Province Qilu Hospital of Shandong UniversityJinan 250012Shandong ProvinceChina

BACKGROUND Epidemiological studies have revealed a correlation between Alzheimer’s disease(AD)and type 2 diabetes mellitus(T2D).Insulin resistance in the brain is a common feature in patients with T2D and ***7 is a histone acetyltransferase that participates in the modulation of various *** To determine the effects of KAT7 on insulin patients with *** APPswe/PS1-dE9 double-transgenic and db/db mice were used to mimic AD and diabetes,*** in vitro model of AD was established by Aβ*** resistance was induced by chronic stimulation with high insulin *** expression of microtubule-associated protein 2(maP2)was assessed using *** protein levels of maP2,Aβ,dual-specificity tyrosine phosphorylation-regulated kinase-1A(DYRK1A),IRS-1,p-AKT,total AKT,p-GSK3β,total GSK3β,DYRK1A,and KAT7 were measured via western *** of reactive oxygen species(ROS),malondialdehyde(MDA),and SOD activity was measured to determine cellular oxidative *** cytometry and CCK-8 assay were performed to evaluate neuronal cell death and proliferation,*** RNA levels of KAT7 and DYRK1A were examined using quantitative PCR.A chromatin immunoprecipitation assay was conducted to detect H3K14ac in *** KAT7 expression was suppressed in the AD *** of KAT7 decreased Aβaccumulation and maP2 expression in AD ***7 overexpression decreased ROS and MDA levels,elevated SOD activity in brain tissues and neurons,and simultaneously suppressed neuronal ***7 upregulated levels of p-AKT and p-GSK3βto alleviate insulin resistance,along with elevated expression of ***7 depletion suppressed DYRK1A expression and impaired H3K14ac of ***1 overexpression recovered DYRK1A levels and reversed insulin resistance caused by KAT7 *** We determined that KAT7 overexpression recovered insulin sensitivity in AD by recruiting HMGN1 to enhance DYRK1A acetylati

关键词： Alzheimer's disease Diabetes Insulin resistance KAT7 Dual-specificity tyrosine phosphorylation-regulated kinase-1A HMGN1

The management of Placenta Accrete Spectrum-Burning Questions to Be Solved

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

maternal-Fetal Medicine 2019年第2期1卷 70-72页

作者： jing-mei ma Hui-Xia Yang Department of Obstetrics and Gynecology Peking University First HospitalBeijing 100034China

Placenta accreta spectrum disorders resulting in a series of maternal morbidity and mortality has raised attention worldwide including *** is an urgent need to confront with the dilemma of less evidenced-based recommendation on management,especially the key issues of controversial topics,including accurate prediction,conservative management with adjunct *** academic society along with international exports are on the way to pursue sensible solutions.

关键词： Placenta accreta spectrum Pregnancy complications Abnormally invasive placenta Hysterectomy balloon occlusion

Differential Evolution Hemivariational Inequalities with Anti-periodic Conditions

在线全文

学校读者我要写书评

暂无评论

Acta mathematica Sinica,English Series 2024年第4期40卷 1143-1160页

作者： jing ZHAO Chun mei GAN Zhen Hai LIU School of mathematics and Quantitative Economics Guangxi University of Finance and EconomicsNanning 530003P.R.China Guangxi Colleges and Universities Key Laboratory of Optimization Control and Engineering Calculation Guangxi Minzu UniversityNanning 530006P.R.China

The goal of this paper is to deal with a new dynamic system called a differential evolution hemivariational inequality(DEHVI)which couples an abstract parabolic evolution hemivariational inequality and a nonlinear differential equation in a Banach ***,by apply ing surjectivity result for pseudomonotone multivalued mappins and the properties of Clarke's subgradient,we show the nonempty of the solution set for the parabolic hemivariational ***,some topological properties of the solution set are established such as boundedness,closedness and ***,we explore the upper semicontinuity of the solution ***,we prove the solution set of the system(DEHVI)is nonempty and the set of all trajectories of(DEHVI)is weakly compact in C(I,X).

关键词： Differential parabolic hemivariational inequality Clarke subdifferential hyperbolicparabolic system parabolic-parabolic system existence result

The IDD Transcription Factors:Their Functions in Plant Development and Environmental Response

在线全文

学校读者我要写书评

暂无评论

Phyton-International Journal of Experimental Botany 2024年第1期93卷 63-79页

作者： jing Liu Defeng Shu Zilong Tan mei ma Huanhuan Yang Ning Guo Shipeng Li Dayong Cui School of Life Sciences Qilu Normal UniversityJinan250200China School of Life Sciences Shandong Normal UniversityJinan250014China

INDETERMINATE-DOmaIN proteins(IDDs)are a plant-specific transcription factor family characterized by a conserved ID domain with four zinc finger *** studies have demonstrated that IDDs coordinate a diversity of physiological processes and functions in plant growth and development,including floral transition,plant architecture,seed and root development,and hormone *** this review,we especially summarized the latest knowledge on the functions and working models of IDD members in Arabidopsis,rice,and maize,particularly focusing on their role in the regulatory network of biotic and abiotic environmental responses,such as gravity,temperature,water,and *** these mechanisms underlying the function of IDD proteins in these processes is important for improving crop yields by manipulating their ***,the review offers valuable insights into the functions and mechanisms of IDD proteins in plants,providing a foundation for further research and potential applications in agriculture.

关键词： INDETERMINATE DOmaIN flowering time root development shoot gravitropism plant immunity hormonal signaling environmental responses

A seven-crystal spectrometer for high-energy resolution X-ray spectroscopy at Shanghai Synchrotron Radiation Facility

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2024年第9期35卷 82-91页

作者： Bing-Bao mei Liang-Xin Wang Song-Qi Gu Xiao-Zhi Su Shuo Zhang Yao Wei jing-Yuan ma Zheng Jiang Fei Song Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201800China Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201204China National Synchrotron Radiation Laboratory University of Science and Technology of ChinaHefei 230026China

A Johann-type X-ray spectrometer was successfully developed at the hard X-ray branch(in-vacuum undulator with a 24-mm periodic length)of the energy material beamline(E-line)at the Shanghai Synchrotron Radiation Facility(SSRF).This spectrometer was utilized to implement X-ray emission spectroscopy(XES),high-energy resolution fluorescence-detected X-ray absorption spectroscopy(HERFD-XAS),and resonant inelastic X-ray *** spherically bent crystals were positioned on the respective vertical 500-mm-diameter Rowland circles,adopting an area detector to increase the solid angle to 1.75%of 4πsr,facilitating the study of low-concentrate systems under complex reaction *** under the atmosphere pressure,the spectrometer covers the energy region from 3.5 to 18 keV,with the Bragg angle ranging from 73°to 86°during vertical *** offers a promised energy resolution of sub-eV(XES)and super-eV(HERFD-XAS).Generally,these comprehensive core-level spectroscopy methods based on hard X-rays at the E-line with an extremely high photon flux can meet the crucial requirements of a green energy ***,they provide substantial support for scientific advances in fundamental research.

关键词： X-ray emission spectroscopy High-energy-resolution X-ray spectrometer Johann geometry Energy materials SSRF

Molecular Generation and Optimization of Molecular Properties Using a Transformer Model

在线全文

学校读者我要写书评

暂无评论

Big Data Mining and Analytics 2024年第1期7卷 142-155页

作者： Zhongyin Xu Xiujuan Lei mei ma Yi Pan School of Computer Science Shaanxi Normal UniversityXi'an 710119China Faculty of Computer Science and Control Engineering Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China

Generating novel molecules to satisfy specific properties is a challenging task in modern drug discovery,which requires the optimization of a specific objective based on satisfying chemical ***,we aim to optimize the properties of a specific molecule to satisfy the specific properties of the generated *** matched Molecular Pairs(MMPs),which contain the source and target molecules,are used herein,and logD and solubility are selected as the optimization *** main innovative work lies in the calculation related to a specific transformer from the perspective of a matrix *** intervals and state changes are then used to encode logD and solubility for subsequent *** the experiments,we screen the data based on the proportion of heavy atoms to all atoms in the groups and select 12365,1503,and 1570 MMPs as the training,validation,and test sets,*** models are compared with the baseline models with respect to their abilities to generate molecules with specific *** show that the transformer model can accurately optimize the source molecules to satisfy specific properties.

关键词： molecular optimization transformer matched Molecular Pairs(MMPs) logD solubility