检索结果-南通市图书馆

维普期刊数据库

Electrospun poly（vinylidene fluoride-trifluoroethylene）/ zinc oxide nanocomposite tissue engineering scaffolds with enhanced cell adhesion and blood vessel formation

在线全文

学校读者我要写书评

暂无评论

Nano Research 2017年第10期10卷 3358-3376页

作者： Robin Augustine Pan Dan Alejandro Sosnik Nandakumar Kalarikkal Nguyen Tran Brice Vincent Sabu Thomas Patrick menu Didier Rouxel Laboratory of Pharmaceutical Nanomaterials Science Department of Materials Science and Engineering Technion-lsrael Institute of Technology De-Jur Building Technion City Haifa 3200003 Israel Intemationaland Inter University Centre for Nanoscience and Nanotechnology Mahatma Gandhi University Kottayam Kerala 686560 India Ingenierie Moleculaire et Physiopathologie Articulaire UMR 7365 CNRS-Universite de Lorraine Vandoeuvre-Ies Nancy F-54500 France School of Pure and Applied Physics Mahatma Gandhi University Kottayam Kerala 686560 India School of Surgery Faculty of Medicine Universite de Lorraine Vandoeuvre-Ies-Nancy F-54500 France Institut Jean Lamour UMR 7198 CNRS-Universite de Lorraine Vandoeuvre-Ies-Nancy F-54500 France School of Chemical Sciences Mahatma Gandhi University Kottayam Kerala 686560 India

Piezoelectric materials that generate electrical signals in response to mechanical strain can be used in tissue engineering to stimulate cell proliferation. Poly （vinylidene fluoride-trifluoroethylene）（P（VDF-TrFE））, a piezoelectric polymer, is widely used in biomaterial applications. We hypothesized that incorporation of zinc oxide （ZnO） nanoparticles into the P（VDF-TrFE） matrix could promote adhesion, migration, and proliferation of cells, as well as blood vessel formation （angiogenesis）. In this study, we fabricated and comprehensively characterized a novel electrospun P（VDF-TrFE）/ZnO nanocomposite tissue engineering scaffold. We analyzed the morphological features of the polymeric matrix by scanning electron microscopy, and utilized Fourier transform infrared spectroscopy, X-ray diffraction, and differential scanning calorimetry to examine changes in the crystalline phases of the copolymer due to addition of the nanoparticles. We detected no or minimal adverse effects of the biomaterials with regard to blood compatibility in vitro, biocompatibility, and cytotoxicity, indicating that P（VDF-TrFE）/ZnO nanocomposite scaffolds are suitable for tissue engineering applications. Interestingly, human mesenchymal stem cells （hMSCs） and human umbilical vein endothelial cells cultured on the nanocomposite scaffolds exhibited higher cell viability, adhesion, and proliferation compared to cells cultured on tissue culture plates or neat P（VDF-TrFE） scaffolds. Nanocomposite scaffolds implanted into rats with or without hMSCs did not elicit immunological responses, as assessed by macroscopic analysis and histology. Importantly, nanocomposite scaffolds promoted angiogenesis, which was increased in scaffolds pre-seeded with hMSCs. Overall, our results highlight the potential of these novel P（VDF-TrFE）/ZnO nanocomposites for use in tissue engineering, due to their biocompatibility and ability to promote cell adhesion and angiogenesis.

关键词： scaffolds electrospinning poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)) ZnO angiogenesis cell adhesion stem cells

Oxygen Therapeutics :Current Issues and New Challenges

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

生物医学工程学杂志 2005年第S1期22卷 31-32页

作者： P. menu C. BOURA C. GAUCHER J-F STOLTZ Research Group of Cell and Tissue Engineering LEMTA-UMR CNRS 7563 Faculté de Médecine 54505 Vandoeuvre-lès-Nancy FranceResearch Group of Cell and Tissue Engineering LEMTA-UMR CNRS 7563 Faculté de Médecine 54505 Vandoeuvre-lès-Nancy FranceResearch Group of Cell and Tissue Engineering LEMTA-UMR CNRS 7563 Faculté de Médecine 54505 Vandoeuvre-lès-Nancy FranceResearch Group of Cell and Tissue Engineering LEMTA-UMR CNRS 7563 Faculté de Médecine 54505 Vandoeuvre-lès-Nancy France

维普期刊数据库

A Multilevel Core Sampler Device to Directly Estimate Food Supply Accessible to Waders

在线全文

学校读者我要写书评

暂无评论

Open Journal of Marine Science 2013年第2期3卷 52-65页

作者： Christophe Luczak Dominique menu Céline Rolet Laboratoire d’Océanologie & Géosciences Université Lille 1-Sciences et Technologies Wimereux France Université d’Artois IUFM Centre de Gravelines Gravelines France Laboratoire d’Océanologie & Géosciences Université Lille 1-Sciences et Technologies Wimereux France

To understand food webs functioning in intertidal soft-sediments, it is critical to assess the macrobenthic prey fraction accessible to waders. Here we describe a simple core sampler device allowing to directly relating the vertical distribution of macrozoobenthos to waders bill length. Bill length measurements were used as a proxy of probing depth to estimate the amount of food supply accessible. Several metal plates can be inserted in the core sampler at different heights according to the bill length data of the studied species. These data are provided in a literature survey. For each species, the bill length variability is then explicitly taken into account in the estimation of food accessibility. The core is transparent to check for the quality of the sample. It could also be used to estimate a Benthic Habitat Quality index (BHQ) based on characteristics of the vertical structure of the sediment. This multilevel core is easy to build and to adapt to any studied wader species of the intertidal zone, floodplains or other wetlands. The samples are obtained with the same effort as with usual circular cores leading to the possibility to survey large area. With one core sample, the ecological information that can be achieved at once is threefold: 1) benthic community structure (partitioned in several depths), 2) estimate of the accessible food fraction to waders (range of values) and 3) habitat quality index assessment.

关键词： Benthos Waders Core Sampler Vertical Distribution Food Supply Intertidal

Potential Use of Polyelectrolyte Multilayer thin Films in Vascular Tissue Engineering:Evaluation of the Viability and Adhesion of Endothelial Cells

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

生物医学工程学杂志 2005年第S1期22卷 117-118页

作者： Cédric BOURA Halima KERDJOUDJ Vanessa MOBY Pierre SCHAAJ Jean Claude VOEGEL Jean-Fran·ois STOLTZ Patrick menu Mécanique et Ingénierie Cellulaire et Tissulaire LEMTA-UMR CNRS 7563Facultéde Médecine54505 Vandoeuvre-lès-NancyFrance Institut Charles Sadron(CNRS-ULP) UPR 22 CNRS67083 StrasbourgFrance INSERM U 595 Facultéde Médecine67085 StrasbourgFrance

1 Introduction A method in vascular tissue engineering to obtain hemocompatible synthetic prosthesis consist s to cover the luminal surface by a monolayer of endothelial cell s(ECs).Nevertheless,the surface of current prosthesi s does not favour the development of an ECs ***,a new versatile method of self2assembled archi2 tectures based on the alternate adsorption of polycations and polyanions has been developed to lead to the build2up of multilayered polyelectrolyte films(MPF).This new type of surface modification offers also large possibilities for varying the physico2chemical properties such as rough2 ness or surface charges,film thickness and viscoelastic properties.

关键词： Tissue Engineering thin Films viscoelastic properties surface modification tissue engineering endothelial cells method of type of

维普期刊数据库

Stability Study and Modelling of a Pilot Controlled Regulator

在线全文

学校读者我要写书评

暂无评论

Materials Sciences and Applications 2011年第7期2卷 858-869页

作者： El Golli Rami Bezian Jean-Jacques Grenouilleau Pascal menu Francois 7 Rue Imam Abou HanifaMenzeh 7ArianaTunisia Gaz De France-Research&Development Division 361 avenue du presi-dent wilsonSaint Denis La Plaine CedexFrance Ecole des Mines d'Albi Campus Jarlard 80013 Albi cedexFrance

With the increase of gas consumption and the expansion of the associated distribution network, Gaz de France set up a research program to develop a methodology and a library of models to study the stability of any type of pressure regulator. The pressure level is controlled by pressure regulating stations. The objective of this study is to point out the working conditions that lead to instabilities. Some experiments and numerical simulations have been carried out to identify the relative influence of several parameters on the amplitude of oscillations. It turned out from measurements and simulations that the amplitudes of the downstream pressure are especially sensitive to the upstream pressure and to the size of the downstream volume.

关键词： Regulator Stability Regulation Simulation Experimental Design Pumping

全力逮捕好身材偷窃大盗完全解决不明变胖的原因

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

茶（健康天地） 2007年第5期 48-51页

作者： menu 丹丹

好身材的养成要从日常生活点滴做起,均衡的营养摄取是关键。但是,在减肥路上,那些以光鲜亮丽的假像行营养偷窃之实的"大盗"常会将我们的好身材盗去,严重触犯了减肥条例。menu此次奉命缉拿这些大盗归案,以维持良好的减肥治安。

关键词：大盗营养摄取生活点滴光鲜亮丽摄取量肉类食物减肥者饱和脂肪酸脂肪便饥饿感

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

拜访极地王者

中国国家旅游 2013年第4期 130-137页

作者： Benedicte menu 张蔷 Stranislas Fautre-Figaro Photo-Dragonlmage

当当当……“北极光!”当当当……“北极光!”凌晨一点半，伴随着一阵急促的敲门声，刚才还是一片寂静的希尔河遗迹客栈（Seal River Heritage Lodge）转眼间人头攒动，热闹非凡，人们匆匆冲出房门，有的只在睡衣外面披了一件毛衫。

关键词：旅游业旅游市场旅游景点中国

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

不可思议的纳米比亚

汽车自驾游 2014年第9期 86-93页

作者： Benedicte menu 张蔷(翻译)

从世界上最古老的大漠沙丘到骷髅海岸难以征服的绵长海滩，自然之手在纳米比亚雕刻了一座令人叹为观止的生命剧场。只有走进这里的人才能有幸看到，关于生命的神秘与璀璨、原始与美好。

关键词：自驾游汽车驾驶驾驶技巧旅游

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

斐济的伊甸园

科学大观园 2014年第22期 10-12页

作者： Bénédict menu

尽管在地理位置上斐济与我们相隔万里,但是历史却拉近了它与我们的距离。太平洋的波涛让我们想起了马龙·白兰度的波利尼西亚、雅克·布雷尔的专辑《侯爵夫人》……所以,当旅行社向我们推荐劳萨拉岛时,兴致勃勃的我们决定去看看这座天... 详细信息

尽管在地理位置上斐济与我们相隔万里,但是历史却拉近了它与我们的距离。太平洋的波涛让我们想起了马龙·白兰度的波利尼西亚、雅克·布雷尔的专辑《侯爵夫人》……所以,当旅行社向我们推荐劳萨拉岛时,兴致勃勃的我们决定去看看这座天堂般的岛屿。在9月的一个美丽的清晨,我们的飞机终于停在了机场跑道上。这个小巧的国际机场位于南迪市,在美地来雾岛的西

关键词：伊甸园奥地利