检索结果-南通市图书馆

Porous photothermal antibacterial antioxidant dual–crosslinked cryogel based on hyaluronic acid/polydopamine for non-compressible hemostasis and infectious wound repair

引用

Journal of Materials science & Technology 2022年第26期121卷 207-219页

作者： Chunbo Wang Yuqing liang Ying huang Meng li Baolin Guo Key laboratory of shaanxi Province for Craniofacial Precision Medicine Research College of StomatologyXi’an Jiaotong UniversityXi’an 710049China state Key laboratory for Mechanical Behavior of Materials and Frontier Institute of Science and TechnologyXi’an Jiaotong UniversityXi’an 710049China

Cryogel dressings with good absorption ability and photothermal antibacterial properties for preventing wound infections and treating infected wounds have attracted widespread *** this work,a series of cryogels with macroporous structure,antioxidant and photothermal properties were prepared based on adipic dihydrazide modified hyaluronic acid(HA-ADH),and dopamine(DA).The antioxidant properties,hemostatic properties,near infrared(NIR)assisted photothermal antibacterial ability provided by polydopamine,recyclable compression mechanical properties,and cytocompatibility were *** results demonstrated that the HA-ADH/DA cryogels have stable mechanical properties,great antibacterial properties against ***(EC)and methicillin-resistant ***(MRsA).The high swelling ratio due to the high water retention of HA equipped the cryogels with the capability of absorbing exuded blood and excessive tissue fluid in the infected full-thickness skin defect model of *** cryogels demonstrated good cytocompatibility and antioxidant performance through cell tests and 1,1-diphenyl-2-methylbenzohydrazino(DPPH)scavenging efficiency *** cryogels showed enhanced blood-clotting index(BCI)and better hemostatic ability in the mouse liver trauma model and the rat deep noncompressible liver defect model compared with gauze and gelatin ***,compared with commercial TegadermTMdressing in vivo,the HA-ADH/DA cryogels could greatly promote infected skin wound healing in a full-thickness infected skin defect wound *** summary,the macroporous HAADH/DA cryogels with good antioxidant,high swelling ratio,photothermal antibacterial property,and biocompatibility are a promising hemostatic material and wound healing dressing.

关键词： Dopamine-hyaluronic acid-based cryogels Antioxidant Photothermal antibacterial Wound healing Hemostasis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Catalytic combustion of methane over a highly active and stable Ni0/Ce02 catalyst

引用

Frontiers of Chemical science and Engineering 2020年第4期14卷 534-545页

作者： Xiuhui huang Junfeng li Jun Wang Zeqiu li Jiayin Xu school of Energy and Power Engineering University of Shanghai for Science and TechnologyShanghai 200093China shanghai Key laboratory of Multiphase Flow and Heat Transfer in Power Engineering Shanghai 200093China shanghai MCC20 Construction Co.ltd Shanghai 201999China

In the last decades,many reports dealing with technology for the catalytic combustion of methane(CH4)have been ***,attention has increasingly focused on the synthesis and catalytic activity of nickel *** this paper,a NiO/CeO2 catalyst with high catalytic performance in methane combustion was synthe-sized via a facile impregnation method,and its catalytic activity,stability,and water-resistance during CH4 com-bustion were investigated.X-ray diffraction,low-tempera-ture N2 adsorption,thermogravimetric analysis,Fourier transform infrared spectroscopy,hydrogen temperature programmed reduction,methane temperature programmed surface reaction,Raman spectroscopy,electron paramag-netic resonance,and transmission electron microscope characterization of the catalyst were conducted to determine the origin of its high catalytic activity and stability in *** incorporation of NiO was found to enhance the concentration of oxygen vacancies,as well as the activity and amount of surface *** a result,the mobility of bulk oxygen in CeO2 was *** presence of CeO2 prevented the aggregation of NiO,enhanced reduction by NiO,and provided more oxygen species for the combustion *** results of a kinetics study indicated that the reaction order was about 1.07 for CH4 and about 0.10 for O2 over the NiO/CeO2 catalyst.

关键词： methane combustion NiO/CeO2 catalyst interaction oxygen vacancy kinetic study

来源：

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

Antithrombotic therapy in patients with COVID-19:indications,pharmacotherapy and controversy

引用

stroke & Vascular Neurology 2023年第4期8卷 263-265页

作者： David Wang Christopher leo liping liu li huang lisa huang Yun lu Department of Neurology Petznick Stroke CenterBarrow Neurological InstitutePhoenixArizonaUSA Department of Medicine/Division of General Internal Medicine/Hospital Medicine Duke UniversityDurhamNorth CarolinaUSA Neurosurgical Intensive Care Unit(NICU) Beijing Tiantan HospitalCapital Medical UniversityBeijingChina China National Clinical Research Center for Neurological Diseases BeijingChina Doctors Medical Center ModestoCaliforniaUSA Chesapeake Regional Medical Center ChesapeakeVirginiaUSA Hennepin Healthcare system and the University of Minnesota MinneapolisMinnesotaUSA

Hypercoagulability associated with COVID-19 infection increases risks for either venous or arterial thrombotic events(ATEs)or both.1 For hospitalised patients with COVID-19,the incidence of venous thromboembolism(VTE)was 4.5%2;the rate among patients with crit-ical illness was 27.9%as compared with those not critically ill(7.1%).The exact mechanism of COVID-19-related thrombotic events is ***,it may partially be related to Virchow triad:alternation of blood flow(stasis),vascular endothelial injury by sARs-CoV 2 virus and alteration of the constituents of the blood including inherited or acquired hypercoagulable ***,it is a challenge to evaluate the thromboembolic risk,select an appropriate antithrombotic agent and decide on the doses and duration of therapy in these *** international and American societies have published clinical guidelines that reviewed evaluation of coagulation abnormalities in patients with COVID-19.3-6 To balance the risk of bleeding and preventing or treating thromboembolic events,a simplified practical summarisation is needed.

关键词： patients thrombotic doses

来源：

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

Enhanced electromagnetic absorption in ferrite and tantalum pentoxide based polypyrrole nanocomposite

引用

Progress in Natural science:Materials International 2019年第2期29卷 170-176页

作者： Preeti Gairola l.P.Purohit s.P.Gairola Preetam Bhardwaj shivani Kaushik Department of Physics Gurukul Kangri Vishwavidyalaya Haridwar Uttaranchal University

The electromagnetic interference(EMI) shielding properties of polypyrrole/barium ferrite/tantalum pentoxide nanocomposite were studied in the X-band frequency range from 8.2 GHz to 12.4 GHz. The nanocomposites were chemically synthesized at room temperature and then characterized by various techniques. The dielectric material parameters were calculated based on the experimental scattering parameters using Nicholson–Ross and Weir algorithms. The synthesized nanocomposites demonstrated that the shielding effectiveness up to 50 dB depended upon the dielectric loss and weight fraction of ferrite and Ta2O5in the polymer matrix.

关键词： Polypyrrole In-situ polymerization Composite EMI shielding effectiveness Ferrites Dielectric material

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Achieving efficient RNAi therapy: progress and challenges

引用

Acta Pharmaceutica sinica B 2013年第4期3卷 213-225页

作者： Kun Gao leaf huang The Key laboratory of Biomedical Information Engineering of the Ministry of Education school of life science and Technology Xi'an Jiao Tong UniversityXi'an 710049China Division of Molecular Pharmaceutics Eshelman School of PharmacyUniversity of North CarolinaChapel HillNC 27599USA

RNA interference(RNAi)has been harnessed to produce a new class of drugs for treatment of various *** review summarizes the most important parameters that govern the silencing efficiency and duration of the RNAi effect such as small interfering RNA(siRNA)stability and modification,the type of delivery system and particle sizing *** also discusses the predominant barriers for siRNA delivery,such as off-target effects and introduces internalization,endosomal escape and mathematical modeling in RNAi therapy and combinatorial *** present,effective delivery of RNAi therapeutics in vivo remains a challenge although significant progress has been made in this field.

关键词： siRNA modification Non-viral delivery Particle sizing Off target Internalization Endosomal escape Mathematical modeling Combinatorial RNAi

来源：

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

A fusion protein containing murine vascular endothelial growth factor and tissue factor induces thrombogenesis and suppression of tumor growth in a colon carcinoma model

引用

Journal of Zhejiang University-science B(Biomedicine & Biotechnology) 2008年第8期9卷 602-609页

作者： Feng-ying huang Yue-nan lI Hua WANG Yong-hao huang Ying-ying lIN Guang-hong TAN Hainan Provincial Key laboratory of Tropical Medicine Hainan Medical College Haikou 571101 China

Induction of tumor vasculature occlusion by targeting a thrombogen to newly formed blood vessels in tumor tissues represents an intriguing approach to the eradication of primary solid tumors. In the current study, we construct and express a fusion protein containing vascular endothelial growth factor (VEGF) and tissue factor (TF) to explore whether this fusion protein has the capability of inhibiting tumor growth in a colon carcinoma model. The murine cDNA of VEGF A and TF were amplified by reverse transcriptase polymerase chain reaction (RT-PCR), and then cloned into prokaryotic expression plasmid pQE30 with a linker. The expression product recombinant VEGF-TF (rVEGF-TF) was purified and proved to have comparable enzyme activity to a commercial TF and the capability of specific binding to tumor vessels. significant decrease of tumor growth was found in the mice administered with rVEGF-TF on Day 6 after initiated rVEGF-TF treatment (Psses in 2 of 10 mice were almost disappeared on Day 14 after the first treatment. In addition, valid thrombogenesis and tumor necrosis were observed in the tumor tissues injected with rVEGF-TF. Our results demonstrate that occlusion of tumor vasculature with rVEGF-TF is potentially an effective approach for cancer therapy.

关键词： Thrombogenesis Vascular endothelial growth factor (VEGF) Tissue factor (TF) Recombinant fusion protein

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Helium and argon isotope geochemistry of the Tibetan Qulong porphyry Cu-Mo deposit,China

引用

Acta Geochimica 2021年第1期40卷 32-41页

作者： Keqiang Peng liyan Wu Yong huang Ke Jiang state Key laboratory of Ore Deposit Geochemistry Institute of GeochemistryChinese Academy of SciencesGuiyang 550081China University of Chinese Academy of sciences Beijing 100049China College of Eco-Environmental Engineering Guizhou Minzu UniversityGuiyang 550025China

The Qulong porphyry Cu-Mo deposit,generated in the Miocene post-collisional extension environment of the Gangdese Copper(Molybdenum)Metallogenic Belt,is one of the largest porphyry Cu deposits in *** study reports the noble gas isotopic compositions of volatiles released from fluid inclusion reserved in pyrite from the Qulong deposit.3He/4 He and 40Ar/36Ar ratios range from 0.54 to 1.015 Ra and 300-359,*** of 4 He and 40Ar range from 1.77 to 2.62×10^(-8)cm^(3)sTP and 1.7-34×10^(-8)cm^(3)sTP,*** isotopic composition of noble gases indicates that the ore-forming fluids of the Qulong Cu-Mo deposit were a mixture of fluid containing mantle component,which is exsolved from the porphyry magma,and crustal fluid characterized by atmospheric Ar and crustal radiogenic ***δ34s values of pyrite and molybdenite range from-0.52‰to 0.31‰,with an average of-0.12‰,indicating a magmatic *** mantle components were involved in the Cu-Mo deposit than in the Mo-Cu deposit in the Qulong-Jiama ore-district.

关键词： He and Ar isotopes sulfur isotope Qulong Cu–Mo deposit Ore-forming fluid Tibet China

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Aβ-ketoacyl-CoA synthase OsCUT1 Confers Increased Drought Tolerance in Rice

引用

Rice science 2022年第4期29卷 353-362页

作者： GAO Xiuying ZHANG Ye ZHANG Hongsheng huang Ji state Key laboratory of Crop Genetics and Germplasm Enhancement College of AgricultureNanjing Agricultural UniversityNanjing 210095China Jiangsu Provincial Engineering Research Center of seed Industry science and Technology Nanjing 210095China suzhou Chien-shiung Institute of Technology Taicang 215411China

Drought stress is one of the major environmental factors affecting crop growth and *** wax plays essential roles in protecting plants from environmental stress via forming a hydrophobic barrier on leaf *** this study,we analyzed nine members(OsCUT1‒OsCUT9)ofβ-ketoacyl-CoA synthase,the rate-limiting key enzyme for cuticular wax synthesis in rice by homology search and domain *** expression levels of OsCUT genes under different abiotic stresses were investigated and OsCUT1 down-regulated by abiotic stress was selected for further function *** to the wild type,overexpression of OsCUT1(OX-OsCUT1)exhibited significantly increased drought *** wax was increased on the leaf surface of OX-OsCUT1 and the chlorophyll leaching experiment showed that the cuticular permeability was decreased in the OX-OsCUT1 ***,overexpression of OsCUT1 didn’t result in the significant changes of major agronomic *** total,these results suggested that OsCUT1 is a promising gene for engineering rice plants with enhanced drought tolerance.

关键词： rice β-ketoacyl-CoA synthase drought tolerance cuticular wax OsCUT1

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Boundary layer solution of the Boltzmann Equation for specular Boundary Condition

引用

Acta Mathematicae Applicatae sinica 2023年第1期39卷 65-94页

作者： Fei-min huang Zai-hong JIANG Yong WANG Academy of Mathematics and systems science Chinese Academy of SciencesBeijing100190China school of Mathematical sciences University of Chinese Academy of SciencesBeijing 100049China Department of Mathematics Zhejiang Normal UniversityJinhua 321004China

In the paper,we establish the existence of steady boundary layer solution of Boltzmann equation with specular boundary condition in lx,v2∩lx,v∞in *** uniqueness,continuity and exponential decay of the solution are obtained,and such estimates are important to prove the Hilbert expansion of Boltzmann equation for half-space problem with specular boundary condition.

关键词： Botlzmann equation boundary layer steady problem specular boundary condition a priori estimate

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Arsenic hyperaccumulator Pteris Vittata l. and its arsenic accumulation

引用

Chinese science Bulletin 2002年第11期47卷 902-905页

作者： Tongbin Chen Chaoyang Wei Zechun huang Qifei huang Quanguo lu Zilian Fan Chinese Acad sci Dept Environm Remediat Inst Geog Sci & Nat Resources Res Beijing 100101 Peoples R China

An arsenic hyperaccumulator Pteris vittata l. (Chinese brake) was first discovered in China by means of field survey and greenhouse cultivation. Field survey showed that Chinese brake had large accumulating capacity to arsenic; the orders of arsenic content in different parts of the fern were as follows: leaves>leafstalks>roots, which is totally different from that of ordinary plants; bioaccumulation coefficients of the above ground parts of the fern decreased as a power function of soil arsenic contents. In the control of pot trials with normal unpolluted soil containing 9mg/kg of arsenic, the bioaccumulation coefficients of the above ground parts and rhizoids of Chinese brake were as high as 71 and 80 respectively. Greenhouse cultivation in the contaminated soil from mining areas has shown that more than 1 times greater arsenic can be accumulated in the leaves of the fern than that of field samples with the largest content of 5070 mg/kg As on a dry matter basis. During greenhouse cultivation, arsenic

关键词： hyperaccumlator Chinese brake arsenic bioaccumu-lation coefficients.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：