检索结果-南通市图书馆

国外地震工程 1981年第1期 30-40页

作者： d.fischer 居荣初武汉地震研究所

引言假使一弹性容器,部分或全部地盛满液体,并受侧向加速度的作用,则液体的反作用力对容器壁产生下列两方面的影响:1.对流压力,它主要取决于液体的自由表面位移(晃动);2.冲击压力,它由液体和容器共同

关键词：方程容器壁圆柱形容器函数积分积分学代入边界条件

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

通信服务的使用缩短产品开发时间

工业工程与管理 1998年第2期3卷 56-59,63页

作者：王艳君 d.fischer W.Nogge O Schumacher 德国斯图加特弗朗霍夫劳动经济和组织研究所德国斯图加特大学

企业对内和对外进行通信交流与合作的能力已经成为决定企业成功与否的一个因素。近几年来，通信网络的数字化已经存在而且覆盖面广，它形成了必要的基础设施，使通信服务在中小型企业中得到使用。为了缩短产品开发时间，弗朗霍夫劳动经... 详细信息

企业对内和对外进行通信交流与合作的能力已经成为决定企业成功与否的一个因素。近几年来，通信网络的数字化已经存在而且覆盖面广，它形成了必要的基础设施，使通信服务在中小型企业中得到使用。为了缩短产品开发时间，弗朗霍夫劳动经济和组织（IAO）研究所与其工业界的合作伙伴及协会的其他研究所一起，在“Cobra－3”项目中开发并检测了CAd机械制造中通信服务的效果。

关键词：产品开发通信机械制造项目

维普期刊数据库

double-electron capture in slow Ar16+--Ne collisions

在线全文

学校读者我要写书评

暂无评论

Double-electron capture in slow Ar16+--Ne collisions

低分子量聚乙烯亚胺——一种用于细胞转染的有效阳离子聚合物（英文）

第十五届全国原子与分子物理学术会议

作者： d.fischer R.Ginzel S.Bernitt K.U.Khnel A.Krauss J.R.Crespo López-Urrutia R.Moshammer J.Ullrich Max-Planck-Institut fr Kernphysik

When slow highly charged ions collide with neutral atoms one or several electrons are transferred with high probability from the target atoms into the highly charged *** is well known that few-electron capture results...

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

低分子量聚乙烯亚胺——一种用于细胞转染的有效阳离子聚合物（英...

Effects of the urban landscape on heatwave-mortality associations in Hong Kong: comparison of different heatwave definitions

中国科协第三届青年学术年会

作者：李又欣 d.fischer T．Bieber H-P．Elssser T．Kissel Schwarz Pharma AG Germany department of Pharmaceuticsand Biopharmacy Germany department of Cell Biology （Germany） department of Cell Biology （Germany） department of Pharmaceuticsand Biopharmacy Germany

转基因技术是近十几年发展起来的一种新型治疗手段进入90年代以来,阳离子聚合物以其低付作用,高效率得到国际学术界及工业界的广泛注意。本文报导了低分子量聚乙烯亚胺作用非病毒型载体用于基因转移方面的研究。通过激光光散射及核磁共... 详细信息

转基因技术是近十几年发展起来的一种新型治疗手段进入90年代以来,阳离子聚合物以其低付作用,高效率得到国际学术界及工业界的广泛注意。本文报导了低分子量聚乙烯亚胺作用非病毒型载体用于基因转移方面的研究。通过激光光散射及核磁共振谱的研究发现低分子量聚乙烯亚胺具有较低的支化度及分散性,同时具有较高的旋转半径等性质,在细胞培养实验中发现,与目前众多研究小组常用的商业化高分子量聚乙烯亚胺进行比较,低分子量聚乙烯亚胺在一个相当宽的浓度范围内具有相当低的毒性,同时在转基因实验中发现,其转移效率较之高分子量聚乙烯亚胺而言,增加了100倍左右,显示其作为一种新型的载体在转基因技术中的优势。

关键词：聚乙烯亚胺细胞转染阳离子聚合物

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

Frontiers of Environmental Science & Engineering 2024年第1期18卷 145-156页

作者： Jinglu Song Yi Lu Thomas fischer Kejia Hu department of Urban Planning and design Xi’an Jiaotong-Liverpool UniversitySuzhou 215123China department of Architecture and Civil Engineering City University of Hong KongKowloon TongHong Kong 999077China Environmental Assessment and Management Research Centre School of Environmental SciencesUniversity of LiverpoolLiverpool L35TRUK Research Unit for Environmental Sciences and Management Faculty of Natural and Agricultural SciencesNorth West UniversityPotchefstroom 31750South Africa Institute of Big data in Health Science School of Public HealthZhejiang UniversityZijingang CampusHangzhou 310058China

despite increased attention given to potential modifiers of temperature-mortality associations, evidence for variations between different urban landscape characteristics remains limited. It is in this context that in this paper effect modifications of multiple urban landscape characteristics are explored under different heatwave definitions for different age groups and gender in Hong Kong, China. daily meteorological data and heatwave-related mortality counts from 2008 to 2017 were collected from the Hong Kong Census and Statistics department, China. A case-only design was adopted, combined with logistic regression models to examine the modification effects of five urban landscape characteristics under six heatwave definitions. Stratified analyses were conducted to investigate age- and gender-specific effect modifications. It is found that individuals living in greener areas experienced lower levels of mortality during or immediately after heatwaves. In contrast, a higher building density and nighttime land surface temperature (LST) were associated with a higher heatwave-related mortality risk. Pronounced effect modifications of these urban landscape characteristics were observed under hotter and longer heatwaves, and in older adults (age ≥ 65 years) and males. The findings provide a scientific basis for policymakers and practitioners when considering measures for coping with hotter, longer, and more frequent heatwaves in the context of global climate change.

关键词： Urban landscape Heatwave Mortality Effect modification Intra-urban differences Health risk reduction

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

在大断面巷道中用隔爆水槽棚隔爆

煤矿安全 1988年第4期 44-44页

作者： J.Michelis d.fischer

在联邦德国矿井中,新掘进巷道的断面在18～28m~2范围内。巷道中大量的设备给普通隔爆棚应用造成了困难。为了能完全隔绝生产条件下的爆炸,在特雷莫尼亚试验矿井进行了大量的爆炸试验,爆炸试验巷道的断面大约20m~2进行的试验分成三部分:a... 详细信息

在联邦德国矿井中,新掘进巷道的断面在18～28m~2范围内。巷道中大量的设备给普通隔爆棚应用造成了困难。为了能完全隔绝生产条件下的爆炸,在特雷莫尼亚试验矿井进行了大量的爆炸试验,爆炸试验巷道的断面大约20m~2进行的试验分成三部分:a)空载试验;b)灭火剂撒散试验;c)抑爆试验,在此一个重要的试验准则是在巷道中放入设备,如皮带运输机,局部通风机,管道等。

关键词：大断面巷道布置方式隔爆

design of Biologically Active Macromolecular Ligands and Their Luminescent Complexes with Terbium Ions

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Polymer Science 2024年第5期42卷 604-611,I0007页

作者： Tatiana N.Nekrasova Andrei I.fischer Natalia A.Nesterova Anatoliy V.dobrodumov Anzhelika V.Garshinina Olga d.Shuvaeva Natalya V.Zakharova Evgenii F.Panarin Institute of Macromolecular Compounds Russian Academy of Sciences31 Bolshoy pr.St Petersburg199004Russia Smorodintsev Research Institute of Influenza Russian Ministry of Health15/17 ul.prof.PopovaSt Petersburg197376Russia

Water-soluble copolymers of p-methacrylamidobenzoic acid(MABA)with neutral comonomers(N-vinylpyrrolidone(VP),N-methyl-N-vinylacetamide(MVAA),N-methacryloyl glucosamine(MAG))and anionic comononer sodium styrene sulfonate(NaSS)were synthesized by radical *** interactions between the prepared copolymers and Tb^(3+)ions in aqueous solutions were studied;the significant influence of chemical structure of a comonomer on luminescence intensity of Tb^(3+)complexes with the copolymers was *** luminescence intensity of Tb^(3+)complexes with the copolymers containing N-vinylamide units(VP,MVAA)is three times more intense than that observed for the complexes between Tb^(3+)and MAG-containing *** the case of NaSS-containing copolymers,the luminescence intensity is controlled by the values of binding constants between Tb^(3+)and MABA and the content of MABA units in a *** studied copolymers and their complexes with Tb^(3+)have low cytotoxicity and a pronounced antiviral activity against human respiratory syncytial virus.

关键词： Luminescence Water-soluble copolymers Lanthanide complexes Antiviral activity Cytotoxicity

维普期刊数据库

In vivo polydopamine coating of Rhodobacter sphaeroides for enhanced electron transfer

在线全文

学校读者我要写书评

暂无评论

Nano Research 2024年第2期17卷 875-881页

作者： Rossella Labarile danilo Vona Maria Varsalona Matteo Grattieri Melania Reggente Roberto Comparelli Gianluca M.Farinola Fabian fischer Ardemis A.Boghossian Massimo Trotta Istituto per i Processi Chimico Fisici Consiglio Nazionale delle RicercheBari 70126Italy dipartimento di Chimica Universitàdegli Studi di BariBari 70126Italy Institute of Chemical Sciences and Engineering(ISIC) Ecole Polytechnique Fédérale de Lausanne(EPFL)Lausanne 1015Switzerland Institute of Life Technologies HES-SO Valais-Wallis1950 SionSwitzerland Institute for Renewable Energy HES-SO Valais-Wallis1950 SionSwitzerland

Recent advances in coupling light-harvesting microorganisms with electronic components have led to a new generation of biohybrid devices based on microbial *** devices are limited by the poorly conductive interface between phototrophs and synthetic materials that inhibit charge *** study focuses on overcoming this bottleneck through the metabolically-driven encapsulation of photosynthetic cells with a bio-inspired conductive *** of the purple non sulfur bacterium Rhodobacter sphaeroides were coated with a polydopamine(PdA)nanoparticle layer via the self-polymerization of dopamine under anaerobic *** treated cells show preserved light absorption of the photosynthetic pigments in the presence of dopamine concentrations ranging between 0.05–3.5 *** thickness and nanoparticle formation of the membrane-associated PdA matrix were further shown to vary with the dopamine concentrations in this *** to uncoated cells,the encapsulated cells show up to a 20-fold enhancement in transient photocurrent measurements under mediatorless *** biologically synthesized PdA can thus act as a matrix for electronically coupling the light-harvesting metabolisms of cells with conductive surfaces.

关键词： bioelectronics photosynthetic bacteria purple bacteria electron transfer polydopamine biophotovoltaics

Polydopamine-coated photoautotrophic bacteria for improving extracellular electron transfer in living photovoltaics

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2024年第2期17卷 866-874页

作者： Melania Reggente Charlotte Roullier Mohammed Mouhib Patricia Brandl Hanxuan Wang Stefano Tacconi Francesco Mura Luciana dini Rossella Labarile Massimo Trotta Fabian fischer Ardemis A.Boghossian Institute of Chemical Sciences and Engineering(ISIC) Ecole Polytechnique Fédérale de Lausanne(EPFL)Lausanne 1015Switzerland department of Biology and Biotechnology Charles darwin Sapienza University of RomeRome 00185Italy Research Center on Nanotechnology Applied for Engineering of Sapienza(CNIS) University of Rome SapienzaRome 00185Italy CNR-IPCF Consiglio Nazionale delle Ricerche–Istituto per i Processi Chimico Fisici Bari 70126Italy Institute of Life Technologies HES-SO Valais-WallisSion 1950Switzerland Institute for Renewable Energy HES-SO Valais-WallisSion 1950Switzerland

Living photovoltaics are microbial electrochemical devices that use whole cell–electrode interactions to convert solar energy to *** bottleneck in these technologies is the limited electron transfer between the microbe and the electrode *** study focuses on enhancing this transfer by engineering a polydopamine(PdA)coating on the outer membrane of the photosynthetic microbe Synechocystis *** coating provides a conductive nanoparticle shell to increase electrode adhesion and improve microbial charge extraction.A combination of scanning electron microscopy(SEM),transmission electron microscopy(TEM),UV–Vis absorption,and Raman spectroscopy measurements were used to characterize the nanoparticle shell under various synthesis *** cell viability and activity were further assessed through oxygen evolution,growth curve,and confocal fluorescence microscopy *** results show sustained cell growth and detectable PdA surface coverage under slightly alkaline conditions(pH 7.5)and at low initial dopamine(dA)concentrations(1 mM).The exoelectrogenicity of the cells prepared under these conditions was also characterized through cyclic voltammetry(CV)and chronoamperometry(CA).The measurements show a three-fold enhancement in the photocurrent at an applied bias of 0.3 V(***/AgCl[3 M KCl])compared to non-coated *** study thus lays the framework for engineering the next generation of living photovoltaics with improved performances using biosynthetic electrodes.

关键词： biophotovoltaics bioelectronics photosynthetic bacteria cyanobacteria polydopamine adherence

Advancing Wound Filling Extraction on 3d Faces:An Auto-Segmentation and Wound Face Regeneration Approach

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computer Modeling in Engineering & Sciences 2024年第5期139卷 2197-2214页

作者： duong Q.Nguyen Thinh d.Le Phuong d.Nguyen Nga T.K.Le H.Nguyen-Xuan department of Mathematics and Statistics Quy Nhon UniversityQuy Nhon City55100Viet Nam Applied Research Institute for Science and Technology Quy Nhon UniversityQuy Nhon City55100Viet Nam CIRTECH Institute HUTECH UniversityHo Chi Minh City72308Viet Nam

Facial wound segmentation plays a crucial role in preoperative planning and optimizing patient outcomes in various medical *** this paper,we propose an efficient approach for automating 3d facial wound segmentation using a two-stream graph convolutional *** method leverages the Cir3d-FaIR dataset and addresses the challenge of data imbalance through extensive experimentation with different loss *** achieve accurate segmentation,we conducted thorough experiments and selected a high-performing model from the *** selectedmodel demonstrates exceptional segmentation performance for complex 3d facial ***,based on the segmentation model,we propose an improved approach for extracting 3d facial wound fillers and compare it to the results of the previous *** method achieved a remarkable accuracy of 0.9999993% on the test suite,surpassing the performance of the previous *** this result,we use 3d printing technology to illustrate the shape of the wound *** outcomes of this study have significant implications for physicians involved in preoperative planning and intervention *** automating facial wound segmentation and improving the accuracy ofwound-filling extraction,our approach can assist in carefully assessing and optimizing interventions,leading to enhanced patient ***,it contributes to advancing facial reconstruction techniques by utilizing machine learning and 3d bioprinting for printing skin tissue *** source code is available at https://***/SIMOGroup/WoundFilling3d.

关键词： 3d printing technology face reconstruction 3d segmentation 3d printed model