检索结果-南通市图书馆

A PAT STUDY OF INFLUENCES OF PRECIPITATION ON DEFECTS AND ELECTRONIC DENSITY IN Al-Li-Cu-Mg-Zr ALLOYS

在线全文

学校读者我要写书评

暂无评论

中国有色金属学会会刊：英文版 1997年第1期7卷 43-46页

作者： wu, wM Gao, YJ Luo, LX deng, w Xu, SJ Zhong, XP Jiang, XJ GUANGXI UNIV DEPT PHYSNANNING 530004PEOPLES R CHINA ACAD SINICA INST MET RESSHENYANG 110015PEOPLES R CHINA

ＡＰＡＴＳＴＵＤＹＯＦＩＮＦＬＵＥＮＣＥＳＯＦＰＲＥＣＩＰＩＴＡＴＩＯＮＯＮＤＥＦＥＣＴＳＡＮＤＥＬＥＣＴＲＯＮＩＣＤＥＮＳＩＴＹＩＮＡｌＬｉＣｕＭｇＺｒＡＬＬＯＹＳ①ＷｕＷｅｉｍｉｎｇ，ＧａｏＹｉｎｇｊｕｎ... 详细信息

ＡＰＡＴＳＴＵＤＹＯＦＩＮＦＬＵＥＮＣＥＳＯＦＰＲＥＣＩＰＩＴＡＴＩＯＮＯＮＤＥＦＥＣＴＳＡＮＤＥＬＥＣＴＲＯＮＩＣＤＥＮＳＩＴＹＩＮＡｌＬｉＣｕＭｇＺｒＡＬＬＯＹＳ①ＷｕＷｅｉｍｉｎｇ，ＧａｏＹｉｎｇｊｕｎ，ＬｕｏＬｉｘｉｏｎｇ，ＤｅｎｇＷ...

关键词： positron lifetime spectra Al Li Cu Mg Zr alloy ageing precipitation defects bulk electronic density

Factors Affecting the Growth of SiC Nano-whiskers

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2010年第11期26卷 1041-1046页

作者： Y.F.Chen,X.Z.Liu and X.w.deng State Key Laboratory of Electronic Thin Films and Integrated Devices,University of Electronic Science and Technology of China,Chengdu 610054,China [a] State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China Chengdu 610054 China

Silicon carbide （SiC） is a IV-IV compound semiconductor material with a wide band *** electronic devices and circuits made from SiC are presently developed for high-temperature,high-power,and high-radiation conditions,in which conventional semiconductors cannot be adequately *** this paper,SiH4 and C2H2 were used to synthesize SiC *** Ni was the *** nanowhiskers were grown by vapor-liquid-solid *** effects of the H2 flow rate,growth temperature,catalyst thickness and growth pressure to grow SiC nano-whiskers were studied.3C-SiC thin film and nano-tips can be synthesized by controlling the growth conditions.

关键词： SiC Nano-whisker Vapor-liquid-solid

Recent progresses on designing and manufacturing of bulk refractory alloys with high performances based on controlling interfaces

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2020年第17期52卷 29-62页

作者： T.Zhang H.w.deng Z.M.Xie R.Liu J.F.Yang C.S.Liu X.P.wang Q.F.Fang Y.Xiong School of Physics and Electronic Engineering Guangzhou UniversityGuangZhou 510006China Key Laboratory of Materials Physics Institute of Solid State PhysicsChinese Academy of SciencesHefei 230031China State Key Laboratory of Environment Friendly Energy Materials West South University of Sciences and TechnologyMianYang 621010China

Refractory alloys such as tungsten and molybdenum based alloys with high strength,thermal/electrical conductivity,low coefficient of thermal expansion and excellent creep resistances are highly desirable for applications in nuclear facilities,critical components in aerospace and defense ***,the serious embrittlement limits the engineering usability of some refractory alloys.A lot of research results indicate that the performances of refractory alloys are closely related to the physical/chemical status,such as the interface dimension,interface type,interface composition of their grain boundaries(GBs),phase boundaries(PBs)and other interface *** paper reviewed the recent progress of simulations and experiments on interface design strategies that achieve high performance refractory *** strategies include GB interface purifying/strengthening,PB interface strengthening and PB/GB synergistic *** details are provided on the design/fabrication strategy such as GB interface controlling,PB interface controlling and synergistic control of multi-scaled *** corresponding performances such as the mechanical property,thermal conductivity,thermal load resistance,thermal stability,irradiation resistance,and oxidation resistance are reviewed in the aspect to the effect of *** addition,the relationships between these interfaces and material properties are ***,future developments and potential new research directions for refractory alloys are proposed.

关键词： Interface controlling Designing and manufacturing Refractory alloys Structure and performance

Management of high-flow arteriovenous malformation in the maxillofacial region

在线全文

学校读者我要写书评

暂无评论

Management of high-flow arteriovenous malformation in the ma...

中华口腔医学会全科口腔医学专业委员会第六次学术会议暨广东省口腔医学会全科口腔医学专委会2015年年会

作者： Huang D deng w Chen S Zhang X Li X Li J Chen X The first affiliated hospital of Sun Yat-Sen university

Management of high-flow arteriovenous malformation(AVM) in the oral and maxillofacial region, one of the greatest challenges facing oral and maxillofacial surgeons, is patient-specific in almost all cases. The aim of this study was to review our experience with superselective intra-arterial embolization followed by surgical resection and bone wax packing(BwP) of the bone cavity and curettage to manage AVM. Sixteen patients with AVM of the oral and maxillofacial region were included in this study. All patients were evaluated with preoperative angiography, and superselective intra-arterial embolization of the lesions was done in the same session by the same interventional radiologists. Forty-eight to 72 hours later, surgical resection of the soft-tissue vascular lesions and BwP of the bone cavity and curettage were performed. There were no complications related to either the preoperative angiography or the embolization procedure. The pulsation and noise were absent, and the hemorrhage disappeared. Followed up after the surgical treatment for a mean of38 months(range, 7-63 months), 14 cases were controlled and 2 were improved, and no case was persistent or recurred. Superselective intra-arterial embolization followed by surgical resection and BwP of the bone cavity and curettage was an effective therapy in the oral and maxillofacial region.

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

一种采用松驰标记技术的有效边缘检测算法

图象识别与自动化 1996年第1期 34-53页

作者： Igen.,SS deng,w

边缘检测在计算机视觉处理中起着重要的作用，并在图象处理中受到人们广泛的关注。为了精确地测定边缘，需要上下文信息。怎样利用上下文信息是一个关键问题。本文介绍一种能有效地利用整个图象的边缘和上下文信息来测定边缘的方法，这... 详细信息

边缘检测在计算机视觉处理中起着重要的作用，并在图象处理中受到人们广泛的关注。为了精确地测定边缘，需要上下文信息。怎样利用上下文信息是一个关键问题。本文介绍一种能有效地利用整个图象的边缘和上下文信息来测定边缘的方法，这一方法试图一次利用聚焦象素的某个固定距离内的上下文信息，这个距离将递增直到一个象素的边缘特征被唯一确定为止。运用这个方法，能把相关的上下文信息息量降低到最低程度。实验结果表明。

关键词：边缘检测计算机视觉松驰标记图象处理

Autophagy-targeting modulation to promote peripheral nerve regeneration

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

Neural Regeneration Research 2025年第7期20卷 1864-1882页

作者： Yan Chen Hongxia deng Nannan Zhang Department of Obstetrics and Gynecology West China Second HospitalSichuan UniversityChengduSichuan ProvinceChina Key Laboratory of Birth Defects and women and Children’s Diseases Ministry of EducationSichuan UniversityChengduSichuan ProvinceChina Laboratory of Reproductive Endocrinology and Reproductive Regulation Sichuan UniversityChengduSichuan ProvinceChina National Center for Birth Defect Monitoring West China Second University HospitalSichuan UniversityChengduSichuan ProvinceChina

Nerve regeneration following traumatic peripheral nerve injuries and neuropathies is a complex process modulated by diverse factors and intricate molecular *** studies have focused on factors that stimulate axonal outgrowth and myelin ***,recent studies have highlighted the pivotal role of autophagy in peripheral nerve regeneration,particularly in the context of traumatic ***,autophagy-targeting modulation has emerged as a promising therapeutic approach to enhancing peripheral nerve *** current understanding suggests that activating autophagy facilitates the rapid clearance of damaged axons and myelin sheaths,thereby enhancing neuronal survival and mitigating injury-induced oxidative stress and *** actions collectively contribute to creating a favorable microenvironment for structural and functional nerve regeneration.A range of autophagyinducing drugs and interventions have demonstrated beneficial effects in alleviating peripheral neuropathy and promoting nerve regeneration in preclinical models of traumatic peripheral nerve *** review delves into the regulation of autophagy in cell types involved in peripheral nerve regeneration,summarizing the potential drugs and interventions that can be harnessed to promote this *** hope that our review will offer novel insights and perspectives on the exploitation of autophagy pathways in the treatment of peripheral nerve injuries and neuropathies.

关键词： autophagy autophagy related genes Charcot–Marie–Tooth diseases diabetic peripheral neuropathy metformin myelination peripheral nerve injury Schwann cells sciatic nerve wallerian degeneration

Advances in therapies using mesenchymal stem cells and their exosomes for treatment of peripheral nerve injury:state of the art and future perspectives

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第11期20卷 3151-3171页

作者： Fatima Aldali Chunchu deng Mingbo Nie Hong Chen Department of Rehabilitation Medicine Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubei ProvinceChina Department of Orthopedics Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubei ProvinceChina

“Peripheral nerve injury”refers to damage or trauma affecting nerves outside the brain and spinal *** nerve injury results in movements or sensation impairments,and represents a serious public health *** severed peripheral nerves have been effectively joined and various therapies have been offered,recovery of sensory or motor functions remains limited,and efficacious therapies for complete repair of a nerve injury remain *** emerging field of mesenchymal stem cells and their exosome-based therapies hold promise for enhancing nerve regeneration and *** stem cells,as large living cells responsive to the environment,secrete various factors and *** latter are nano-sized extracellular vesicles containing bioactive molecules such as proteins,microRNA,and messenger RNA derived from parent mesenchymal stem *** have pivotal roles in cell-to-cell communication and nervous tissue function,offering solutions to changes associated with cell-based *** ongoing investigations,mesenchymal stem cells and mesenchymal stem cell-derived exosome-based therapies are in the exploratory stage.A comprehensive review of the latest preclinical experiments and clinical trials is essential for deep understanding of therapeutic strategies and for facilitating clinical *** review initially explores current investigations of mesenchymal stem cells and mesenchymal stem cell-derived exosomes in peripheral nerve injury,exploring the underlying ***,it provides an overview of the current status of mesenchymal stem cell and exosomebased therapies in clinical trials,followed by a comparative analysis of therapies utilizing mesenchymal stem cells and ***,the review addresses the limitations and challenges associated with use of mesenchymal stem cell-derived exosomes,offering potential solutions and guiding future directions.

关键词： clinical trials exosome extracellular vesicles mesenchymal stem cells nerve regeneration peripheral nerve injury pre-clinical experiments

在线全文

学校读者我要写书评

暂无评论

羊膜与羊膜细胞外基质在组织工程中的应用

中国组织工程研究与临床康复 2007年第32期11卷 6450-6453页

作者：高振罗晓婷邓炜李年生赣南医学院第一附属医院口腔科江西省赣州市341000 赣南医学院生化与分子生物学教研室江西省赣州市341000

目的:从羊膜和羊膜细胞外基质结构特征、两者在组织工程中作为细胞支撑物负载细胞在实验研究、临床应用及羊膜上皮细胞可能是组织工程技术一种新的细胞来源等方面对该领域的研究现状进行综述,并分析了目前存在的问题及未来应用前景。资... 详细信息

目的:从羊膜和羊膜细胞外基质结构特征、两者在组织工程中作为细胞支撑物负载细胞在实验研究、临床应用及羊膜上皮细胞可能是组织工程技术一种新的细胞来源等方面对该领域的研究现状进行综述,并分析了目前存在的问题及未来应用前景。资料来源:应用计算机检索Medline 2000-01/2007-03相关羊膜与羊膜细胞外基质在组织工程中应用方面的文献,检索词"amniotic membrane,tissue engineering",限定文献语言种类为English;同时检索中国期刊全文数据库、万方数据库2000-01/2007-03相关文献,检索词"羊膜,组织工程",限定文章语言种类为中文。资料选择:对资料进行初审,选取符合研究要求的有关文章找全文。纳入标准:①有关羊膜与羊膜细胞外基质结构特征的研究。②羊膜与羊膜细胞外基质作为组织工程支架材料的研究性论文。③有关羊膜细胞作为组织工程种子细胞的研究。排除标准:相关度不大的文章,重复性的文章。资料提炼:共检索到90篇关于羊膜与羊膜细胞外基质在组织工程中应用的文献,最终纳入30篇符合标准的文献。资料综合:①羊膜与羊膜细胞外基质结构特征:正常人羊膜组织结构分为上皮细胞层、基底膜、致密层、纤维细胞层及海绵层。上皮细胞层含有羊膜上皮细胞和由羊膜上皮细胞分泌的多种生长因子。羊膜细胞外基质:新鲜制备的羊膜细胞外基质与中、长期保存羊膜细胞外基质致密层结构均相似。②羊膜与羊膜细胞外基质作为组织工程支架材料的应用:羊膜与羊膜细胞外基质可以作为构建周围神经组织工程、皮肤组织工程、角膜组织工程、肌腱组织工程及骨组织工程的修复材料。③羊膜细胞作为组织工程种子细胞的应用:羊膜细胞成分有羊膜上皮细胞,成纤维细胞及未分化的间充质细胞。④分析了羊膜与羊膜细胞外基质在组织工程中应用目前存在的问题及未来应用前景。结论:人羊膜与羊膜细胞外基质作为一种生物材料,其取材、保存和使用需遵循严格的医学标准,但目前尚无统一检测标准。随着生物学技术和其他相关技术的发展,羊膜与羊膜细胞外基质在组织工程中的应用潜能必将得到不断的展现。

关键词：组织工程羊膜综述文献组织构建

Non-coding RNAs in acute ischemic stroke:from brain to periphery

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第1期20卷 116-129页

作者： Shuo Li Zhaohan Xu Shiyao Zhang Huiling Sun Xiaodan Qin Lin Zhu Teng Jiang Junshan Zhou Fuling Yan Qiwen deng Department of Neurology Nanjing First HospitalNanjing Medical UniversityNanjingJiangsu ProvinceChina Department of Neurology Zhongda HospitalSchool of MedicineSoutheast UniversityNanjingJiangsu ProvinceChina General Clinical Research Center Nanjing First HospitalNanjing Medical UniversityNanjingJiangsu ProvinceChina

Acute ischemic stroke is a clinical emergency and a condition with high morbidity,mortality,and *** predictive,diagnostic,and prognostic biomarkers and effective therapeutic targets for acute ischemic stroke remain *** innovations in high-throughput gene sequencing analysis,many aberrantly expressed non-coding RNAs(ncRNAs)in the brain and peripheral blood after acute ischemic stroke have been found in clinical samples and experimental *** expressed ncRNAs in the post-stroke brain were demonstrated to play vital roles in pathological processes,leading to neuroprotection or deterioration,thus ncRNAs can serve as therapeutic targets in acute ischemic ***,distinctly expressed ncRNAs in the peripheral blood can be used as biomarkers for acute ischemic stroke prediction,diagnosis,and *** particular,ncRNAs in peripheral immune cells were recently shown to be involved in the peripheral and brain immune response after acute ischemic *** this review,we consolidate the latest progress of research into the roles of ncRNAs(microRNAs,long ncRNAs,and circular RNAs)in the pathological processes of acute ischemic stroke–induced brain damage,as well as the potential of these ncRNAs to act as biomarkers for acute ischemic stroke prediction,diagnosis,and *** from this review will provide novel ideas for the clinical application of ncRNAs in acute ischemic stroke.

关键词： acute ischemic stroke apoptosis blood–brain barrier damage circular RNAs excitatory toxicity long non-coding RNAs microRNAs neuroinflammation non-coding RNAs oxidative stress