检索结果-南通市图书馆

Chinese Journal of Chemistry 2019年第11期37卷 1158-1166页

作者： Wentao Yu Wanqing Wu Huanfeng Jiang Key Lab of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhouGuangdong 510640China

Background and Originality Content As an inexpensive,fundamental and important feedstock for the petrochemical industry,methylarenes have long been regarded as one of the most widely used raw materials for a great variety of organic transformations.Therefore,the selective benzylic C(sp3)—H functionalization is particularly important,which provides a strategic means to utilize this resource.

关键词： utilize Copper Oxidation

Production of dissolved organic carbon in the South China Sea:A modeling study

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China Earth Sciences 2022年第2期65卷 351-364页

作者： wentao MA Peng XIU Yi yu Yiling ZHENG Fei CHAI State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519080China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China State Key Laboratory of Tropical Oceanography South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China School of Marine Sciences University of MaineOrono 04469MaineUSA

The South China Sea(SCS)is the largest semi-enclosed marginal sea in the western Pacific.The alternation of East Asian monsoon causes a significant seasonal pattern of chlorophyll,primary productivity,and export flux of sinking particles.However,the source and sink of dissolved organic carbon(DOC)pools with different bioavailability are less studied.Here we evaluated the seasonal production of DOC in labile,semi-labile and refractory forms using a coupled physical-biogeochemical model.This study aims to understand the dynamics and budgets of organic matters in the SCS.Model results show that the production of labile,semi-labile and refractory DOC is highly correlated with the net primary productivity(NPP)which is higher in winter and lower in summer,reflecting a dependence of DOC on the NPP.The seasonal variation in Pearl River discharge dominates the DOC production in the northern coastal region.In the northeast,the Kuroshio intrusion associated frontal system is attributed to cause high winter production.The DOC production in the southwest is controlled by both winter mixing and summer upwelling.The production of refractory DOC with the least bioavailability favors carbon sequestration.Its annual mean production is 1.8±0.5 mg C m^(−2) d^(−1),equivalent to 26%of the export flux of particulate organic carbon at 1000 m.

关键词： Dissolved organic carbon Microbial carbon pump South China Sea Biogeochemical model ROMS CoSiNE

构建银纳米颗粒修饰的四氧化三钴电极用于高性能复合锌电池(英文)

在线全文

学校读者我要写书评

暂无评论

中国科学技术大学学报 2021年

作者： Wenxu Shang Wentao Yu Yanyi Ma Peng Tan Department of Thermal Science and Energy Engineering， University of Science and Technology of China (USTC)

复合锌电池将过渡金属氧化物和氧气的氧化还原反应整合到一个电池中，可以同时实现高能量效率和高能量密度，是一种极具发展前景的电化学系统。然而，正极通常面临活性物质容量利用率低以及氧还原和析出反应活性差的问题。通过构建一种... 详细信息

复合锌电池将过渡金属氧化物和氧气的氧化还原反应整合到一个电池中，可以同时实现高能量效率和高能量密度，是一种极具发展前景的电化学系统。然而，正极通常面临活性物质容量利用率低以及氧还原和析出反应活性差的问题。通过构建一种新型具有银纳米粒子修饰的四氧化三钴电极，得益于银纳米颗粒与四氧化三钴纳米线之间的协同作用，导电性得到了改善，形貌得到了有效的优化。使用该电极，复合锌电池可实现在1.85至1.75、1.6、1.55和1.3 V的电压范围内五级平稳放电，在1 mA cm时具有18％的高活性材料利用率和0.69 V的低电压差；而且，可以稳定运行500个充放电循环，在10 mA cm;时电压差仅增加0.03 V。这为超高性能复合锌电池提供了一种兼具高活性材料利用率和高氧电催化活性的新型电极。

关键词：复合锌电池氧化钴银纳米颗粒活性物质利用率电压差

Metabolomics: A useful tool for ischemic stroke research

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Pharmaceutical Analysis 2023年第9期13卷 968-983页

作者： wentao Li Chongyu Shao Chang Li Huifen Zhou Li yu Jiehong Yang Haitong Wan yu He School of Pharmaceutical Sciences Zhejiang Chinese Medical UniversityHangzhou310053China School of Basic Medicine Sciences Zhejiang Chinese Medical UniversityHangzhou310053China

Ischemic stroke(IS)is a multifactorial and heterogeneous disease.Despite years of studies,effective strategies for the diagnosis,management and treatment of stroke are still lacking in clinical practice.Metabolomics is a growing field in systems biology.It is starting to show promise in the identification of biomarkers and in the use of pharmacometabolomics to help patients with certain disorders choose their course of treatment.The development of metabolomics has enabled further and more biological applications.Particularly,metabolomics is increasingly being used to diagnose diseases,discover new drug targets,elucidate mechanisms,and monitor therapeutic outcomes and its potential effect on precision medicine.In this review,we reviewed some recent advances in the study of metabolomics as well as how metabolomics might be used to identify novel biomarkers and understand the mechanisms of IS.Then,the use of metabolomics approaches to investigate the molecular processes and active ingredients of Chinese herbal formulations with anti-IS capabilities is summarized.We finally summarized recent developments in single cell metabolomics for exploring the metabolic profiles of single cells.Although the field is relatively young,the development of single cell metabolomics promises to provide a powerful tool for unraveling the pathogenesis of IS.

关键词： Metabolomics Ischemic stroke Biomarker Precision medicine Single cell metabolomics

Influence of Autonomous Sailboat Dual-Wing Sail Interaction on Lift Coefficients

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Ocean University of China 2022年第3期21卷 656-668页

作者： SUN Zhaoyang HU Feng yu Jiancheng ZHAO wentao ZHANG Aiqun State Key Laboratory of Robotics Shenyang Institute of AutomationChinese Academy of SciencesShenyang110016China Institutes for Robotics and Intelligent Manufacturing Chinese Academy of SciencesShenyang110169China University of Chinese Academy of Sciences Beijing100049China Shenyang Institute of Automation(Guangzhou) Chinese Academy of SciencesGuangzhou511458China

To analyze the influence of the chord length ratio and angle of attack on lift coefficients and explore the interaction mechanism between the two,we established a calculation model of the pressure distribution coefficient on the airfoil surface and lift coefficient of a dual-wing sail on the basis of the vortex panel method.Computational fluid dynamics was used in auxiliary calculation and analysis.Results revealed a reciprocal interference between the front-wing and rear-wing sails.The total lift coefficient of the dual-sail increased with an increase in the front sail chord length.The lift coefficient of the rear sail decreased with an increase in the front sail chord length or angle of attack.The front sail wake affected the pressure distribution on the upper and lower surfaces of the rear sail leading edge.

关键词： autonomous sailboat dual-sail rigid wing sail lift coefficients vortex panel method

The Neural Mechanism of Knowledge Assembly in the Human Brain Inspires Artificial Intelligence Algorithm

在线全文

学校读者我要写书评

暂无评论

Neuroscience Bulletin 2024年第2期40卷 280-282页

作者： Xiang Ji wentao Jiang Xiaoru Zhang Ming Song Shan yu Tianzi Jiang University of the Chinese Academy of Sciences Beijing 100049China Brainnetome Center Institute of AutomationThe Chinese Academy of SciencesBeijing 100190China Laboratory of Brain Atlas and Brain-inspired Intelligence Institute of AutomationThe Chinese Academy of SciencesBeijing 100190China CAS Center for Excellence in Brain Science and Intelligence Technology The Chinese Academy of SciencesBeijing 100190China Research Center for Augmented Intelligence Zhejiang LabHangzhou 311100China

When new information enters the brain,a human's prior knowledge of the world can change rapidly through a process referred to as"knowledge assembly".Recently,Nelli et al.investigated the neural correlates of knowledge assembly in the human brain using functional MRI.Further,inspired by the neural mechanism,the authors developed an artificial neural network algorithm to permit rapid knowledge assembly,improving the flexibility of the system[1].Once again,this research demonstrates that studying how the brain works can lead to better computational algorithms.

关键词： neural knowledge artificial

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

海外创作与学术史料整理的对话

世界文学评论（高教版） 2019年第2期 112-118页

作者：吕红于文涛美国华文文艺界协会北美传媒协会洛杉矶美国书画艺术研究院艺术评论委员会

近年来,海外华文文学写作不但数量激增,而且已经形成自己的风格。站在全球华人的角度,站在文学的角度,站在审美的角度,海外华人作家的厚重之作令人刮目相看。当代世界文学的传世之作很可能出现在海外华文作家之中。海外华文文学社团、... 详细信息

近年来,海外华文文学写作不但数量激增,而且已经形成自己的风格。站在全球华人的角度,站在文学的角度,站在审美的角度,海外华人作家的厚重之作令人刮目相看。当代世界文学的传世之作很可能出现在海外华文作家之中。海外华文文学社团、期刊网络史是华文文学史书写的重要史料基础,也是海外华文文学发展的重要资料。需有规模地系统而科学地把华文作家、社团及其期刊的档案建构起来,建立数据库等智库,从本学科层面必须着手的基础性建设工作,也是海外华文文学研究的硬性标志以及物质性基础,具有重要的史料传世价值。

关键词：海外华文文学当代世界文学华文作家期刊华文文学史书写

Insights into grain boundary segregation and solubility limit of Cr in(TiZrNbTaCr)C

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2023年第8期139卷 1-9页

作者： wentao Su Lei Chen Wen Zhang Sijia Huo yujin Wang yu Zhou Institute for Advanced Ceramics School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin 150001China Key Laboratory of Advanced Structure-Function Integrated Materials and Green Manufacturing Technology Harbin Institute of TechnologyHarbin 150001China

Dense(TiZrNbTaCr)C with Cr segregation along grain boundaries(GBs)has been first proposed and fabri-cated by pressureless sintering at 1800-2000℃,utilizing the self-synthesized carbide powders obtained by carbothermal reduction.Cr segregation along GBs is successfully realized as expected via optimizing the initial Cr content.When Cr content is more than 11.12 at.%,Cr addition is excessive and results in Cr-rich second phase formation at triple junctions.To analyze the Cr solubility dependence on tempera-ture and initial Cr content,the Cr content in(TiZrNbTaCr)C grains is investigated by EDS.The solubility limit of Cr in(TiZrNbTaCr)C is about 3.8 at.%at 1900℃.Finally,Vickers hardness of all the samples is measured to assess the mechanical property of(TiZrNbTaCr)C ceramics.The basic understanding of the Cr solubility limit and GB segregation feature in(TiZrNbTaCr)C have been preliminarily clarified,which may pave a potential way to design and tailor microstructure and GB feature of(TiZrNbTaCr)C for the purpose of enhancing its properties in the future.

关键词： High-entropy carbide Grain boundary segregation Solubility limit Microstructure

Roughness correction method for salinity remote sensing using combined active/passive observations

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Oceanologica Sinica 2021年第11期40卷 189-195页

作者： wentao Ma Guihong Liu Yang yu Yanlei Du State Key Laboratory of Remote Sensing Science Aerospace Information Research InstituteChinese Academy of SciencesBeijing 100101China The Key Laboratory for Earth Observation of Hainan Province Sanya 572029China

Roughness-induced emission from ocean surfaces is one of the main issues that affects the retrieval accuracy of sea surface salinity remote sensing.In previous studies,the correction of roughness effect mainly depended on wind speeds retrieved from scatterometers or those provided by other means,which necessitates a high requirement for accuracy and synchronicity of wind-speed measurements.The aim of this study is to develop a novel roughness correction model of ocean emissivity for the salinity retrieval application.The combined active/passive observations of normalized radar cross-sections(NRCSs)and emissivities from ocean surfaces given by the L-band Aquarius/SAC-D mission,and the auxiliary wind directions collocated from the National Centers for Environmental Prediction(NCEP)dataset are used for model development.The model is validated against the observations and the Aquarius standard algorithms of roughness-induced emissivity correction.Comparisons between model computations and measurements indicate that the model has better accuracy in computing wind-induced brightness temperature in the upwind/downwind directions or for the surfaces with smaller NRCSs,which can be better than 0.3 K.However,for crosswind directions and larger NRCSs,the model accuracy is relatively low.A model using HH-polarized NRCSs yields better accuracy than that using VV-polarized ones.For a fair comparison to the Aquarius standard algorithms using wind speeds retrieved from multi-source data,the maximum likelihood estimation is employed to produce results combining our model calculations and those using other sources.Numerical simulations show that combined results basically have higher accuracy than the standard algorithms.

关键词： salinity remote sensing roughness correction Aquarius satellite active/passive

Qinghua decoction(清化饮)improves chronic nonbacterial prostatitis possibly via regulating the chromogranin A/nerve growth factor/tyrosine kinase A signaling pathway mediated by inflammatory factors

在线全文

学校读者我要写书评

暂无评论

中医杂志:英文版 2023年第4期43卷 695-703页

作者： HAN yunpeng yu wentao ZHANG Ying XU Huazhou DENG Guoxing FANG Chaoyi School of Basic Medical Sciences Hebei University of Chinese MedicineShijiazhuang 050200China Hebei Key Laboratory of Integrated Chinese and Western Medicine for Lung Disease Research Shijiazhuang 050091China

OBJECTIVE:To explore the mechanism by which Qinghua decoction(清化饮)regulates neuroendocrine inflammation in chronic nonbacterial prostatitis(CNP)model rats and provide an experimental basis for clinical treatment.METHODS:The rats were randomly divided into six groups:normal control,model,Qianlie Tongyu capsule,low-dose Qinghua decoction,medium-dose Qinghua decoction,and high-dose Qinghua decoction group with six rats in each group.Rats in each group were sacrificed on the 29th day of treatment,and blood and prostate tissues were collected.Serum levels of tumor necrosis factor-alpha and interleukins 1-beta,6,8,and 10(TNF-αand IL-1β,-6,-8,and-10,respectively)were measured using enzyme-linked immunosorbent assay.The pathological changes in the rat prostate tissue in each group were observed under a light microscope.The expression levels of chromogranin A(CgA),nerve growth factor(NGF),and tyrosine kinase A(TrkA)were detected using reverse transcription quantitative polymerase chain reaction.Western blotting was used to detect protein expression of CgA,NGF,and TrkA.RESULTS:In the model group,the prostate capsule membrane and stroma were significantly dilated with more inflammatory cells infiltrating the stroma and perivessels.TNF-α,IL-1β,-6,and-8,CgA,NGF,and TrkA levels increased,whereas the content of IL-10 decreased,which was statistically significant compared to that in the normal control group(P<0.05).Prostate tissue cells in the high-dose group were neatly arranged with no obvious inflammatory cell infiltration.When compared with the model group,the high-dose Qinghua decoction group showed a significant improvement in these indices(P<0.05).CONCLUSION:Qinghua decoction led to inhibition of pathological changes in the prostate tissue of rats with CNP,regulation of inflammatory cytokine expression,and inhibition in the expression of CgA,NGF,and TrkA.This mechanism may be primarily related to regulation of the CgA/NGF/TrkA signaling pathway mediated by various inflammatory factors.

关键词： inflammation interleukins chromogranin A nerve growth factor chronic nonbacterial prostatitis Qinghua decoction