检索结果-南通市图书馆

Degradation study on tin- and bismuth-based gas-diffusion electrodes during electrochemical CO_(2) reduction in highly alkaline media

引用

Journal of Energy Chemistry 2021年第11期30卷 367-376,I0008页

作者： fabian Bienen Armin Lowe Joachim Hildebrand Sebastian Hertle Dana Schonvogel Dennis Kopljar Norbert Wagner Elias Klemm Kaspar Andreas Friedrich Institute of Engineering Thermodynamics German Aerospace CenterPfaffenwaldring 38-4070569 StuttgartGermany Institute of Building Energetics Thermal Engineering and Energy StorageUniversity of StuttgartPfaffenwaldring 3170569 StuttgartGermany Institute of Technical Chemistry University of StuttgartPfaffenwaldring 5570569 StuttgartGermany Institute of Engineering Thermodynamics German Aerospace CenterCarl-von-Ossietzky-Straße 1526129 OldenburgGermany

This work investigated the degradation of tin – based gas-diffusion electrodes (GDE) and also a promising Bi2O3 GDE in electrochemical CO_(2) reduction in highly alkaline media which has not been studied before. The contributions of the electrode wetting (or flooding, if excessively) and catalyst leaching on the degradation were analyzed. Therefore, electrochemical impedance spectroscopy was used to monitor the wetted surface area of the GDE in combination with post-mortem analysis of the penetration depth by visualizing the electrolyte’s cation in the GDE cross-section. Furthermore, to reveal a possible degradation of the electrocatalyst, its distribution was mapped in the GDEs cross-section after operation while the catholyte was additionally analyzed via ICP-MS. The results clearly demonstrate that the SnO_(2) catalyst dissolves in the reaction zone inside the GDE and might be partially redeposited near the GDEs surface. Since the redeposition process occurs only partially a steady loss of catalyst was observed impeding a clear distinction of the two degradation phenomena. Nevertheless, the deterioration of the electrode performance measured as faraday efficiency (FE) of the parasitic hydrogen evolution reaction (HER) qualitatively correlates with the differential double layer capacitance (Cdl). A significant difference of the rate of increase for the hydrogen FE and Cdl can be ascribed to the superposition of both above-mentioned degradation mechanisms. The demonstrated instability of SnO_(2) contrasts with the behavior of Bi2O3 GDE which is stabilized during CO_(2) conversion by redeposition of the diluted dissolved species as metallic Bi which is active for the CO_(2) reduction reaction.

关键词： Electrochemical CO_(2)reduction Heterogeneous catalysis Gas-diffusion electrode Electrochemical impedance spectroscopy Catalyst leaching

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

Resilience in supply systems -What the food industry can learn from energy sector

引用

Journal of Safety Science and Resilience 2022年第1期3卷 39-47页

作者： fabian Ossevorth Paul Seidel Sebastian Krahmer Joachim Seifert Peter Schegner Peter Lochmann Lukas Oehm Marc Mauermann Technische Universität Dresden Professur für ElektroenergieversorgungDresden 01069Germany Technische Universität Dresden Professur für Gebäudeenergietechnik und WärmeversorgungDresden 01069Germany Technische Universität Dresden Professur für Verarbeitungsmaschinen/VerarbeitungstechnikDresden 01069Germany Fraunhofer-Institut for Process Engineering and Packaging IVV Division Processing Technology Dresden01069Germany

Drastic events such as pandemics,earthquakes or other disasters not only threaten the immediate living conditions of people but also indirect circumstances such as energy supply,infrastructure and food *** ensure that damage and failures in these areas do not lead to a disaster,special requirements are placed on this critical *** this context resilience,which is defined as the resistance of a system to external effects,is required.A field that is indeed part of the critical infrastructure,but which has not been considered as intensively as the energy sector,is food *** investigation focuses on how fundamental principles of thermodynamics,system theory and reliability theory can be applied to the modelling of food production processes to obtain a measure of *** known state and process variables from thermodynamics and electrical power engineering,analogous variables are derived for the food *** variables serve as an evaluation standard for a quality measure𝑄.In addi-tion to system-theoretical considerations,it is investigated how existing evaluation criteria of power engineering,such as System Average Interruption Duration Index(SAIDI)and Customer Average Interruption Duration Index(CAIDI),can be transferred to food ***:The investigation focuses on how fundamental principles of thermodynamics,system theory and reliability theory can be applied to the modelling of food production processes to obtain a measure of *** known state and process variables from thermodynamics and electrical power engineering,analogous variables are derived for the food ***:Drastic events such as pandemics,earthquakes or other disasters not only threaten the immediate living conditions of people but also indirect circumstances such as energy supply,infrastructure and food *** ensure that damage and failures in these areas do not lead to a disaster,special requirements are placed on t

关键词： Resilience Food industry Energy Sector System Theory

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

Functional Fiber Membranes with Antibacterial Properties for Face Masks

引用

Advanced Fiber Materials 2023年第4期5卷 1519-1533页

作者： Papada Natsathaporn Gordon Herwig Stefanie Altenried Qun Ren René M.Rossi Daniel Crespy fabian Itel Department of Materials Science and Engineering School of Molecular Science and EngineeringVidyasirimedhi Institute of Science and Technology(VISTEC)Rayong 21210Thailand Laboratory for Biomimetic Membranes and Textiles EmpaSwiss Federal Laboratories for Materials Science and TechnologyLerchenfeldstrasse 59014 St.GallenSwitzerland Laboratory for Biointerfaces EmpaSwiss Federal Laboratories for Materials Science and TechnologyLerchenfeldstrasse 59014 St.GallenSwitzerland

Reusable face masks are an important alternative for minimizing costs of disposable and surgical face masks during *** complementary to washing,a prolonged lifetime of face masks relies on the incorporation of self-cleaning *** development of self-cleaning face mask materials requires the presence of a durable catalyst to deactivate contaminants and microbes after long-term use without reducing filtration ***,we generate self-cleaning fibers by functionalizing silicone-based(polydimethylsiloxane,PDMS)fibrous membranes with a *** electro-spinning is performed to fabricate fibers with a non-crosslinked silicone core within a supporting shell scaffold,followed by thermal crosslinking and removal of the water-soluble *** zinc oxide nanoparticles(ZnO NPs)are immo-bilized on the PDMS fibers by colloid-electrospinning or post-functionalization *** fibers functionalized with ZnO NPs can degrade a photo-sensitive dye and display antibacterial properties against Gram-positive and Gram-negative bacteria(Escherichia coli and Staphylococcus aureus)due to the generation of reactive oxygen species upon irradiation with UV ***,a single layer of functionalized fibrous membrane shows an air permeability in the range of 80-180 L/m^(2)s and 65%filtration efficiency against fine particulate matter with a diameter less than 1.0µm(PM_(1.0)).

关键词： Polydimethylsiloxane Zinc oxide Face mask Electrospinning Antibacterial

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

Regulation of the New Arabidopsis Imprinted Gene AtBMIIC Requires the Interplay of Different Epigenetic Mechanisms

引用

Molecular Plant 2012年第1期5卷 260-269页

作者： fabian Bratzel ChaoYang Alexandra Angelova Gema Lopez-Torrejon Marcus Koch Juan Carlos del Pozo Myriam Calonje Centre for Organismal Studies Heidelberg Department of Biodiversity and Plant Systernatics University of Heidelberg Im Neuenheirner Feld 345 69120 Heidelberg Germany Centro de Biotecnologia y Genomica de Plantas （UPM-INIA） Campus de Montegancedo s/n Boadilla del Monte 28660 Madrid Spain

Recently, it has been shown that plants contain homologs to the animal Polycomb repressive complex I （PRC1） components BM11 and RINGIA/B. In Arabidopsis, there are three BMIl-like genes, two of which, AtBMIIA and B, are required during post-embryonic plant growth to repress embryonic traits and allow cell differentiation. However, little is known about the third BMIl-like gene, AtBMIIC. In this work, we show that AtBMIIC is only expressed during endosperm and stamen development. AtBMIIC is an imprinted gene expressed from the maternal allele in the endosperm but bialleli- cally expressed in stamen. We found that the characteristic expression pattern of AtBMIIC is the result of a complex epigenetic regulation that involves CG DNA methylation, RNA-directed non-CG DNA methylation （RdDM）, and PcG activity. Our results show the orchestrated interplay of different epigenetic mechanisms in regulating gene expression throughout development, shedding light on the current hypotheses for the origin and mechanism of imprinting in plant endosperm.

关键词： Epigenetics gene silencing development Polycomb Group proteins.

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

Printed microelectrode arrays on soft materials:from PDMS to hydrogels

引用

npj Flexible Electronics 2018年第1期2卷 111-119页

作者： Nouran Adly Sabrina Weidlich Silke Seyock fabian Brings Alexey Yakushenko Andreas Offenhausser Bernhard Wolfrum Institute of Bioelectronics(ICS-8)and JARA-Fundamentals of Future Information Technology Forschungszentrum JulichJulich 52425Germany Neuroelectronics-Munich School of Bioengineering Department of Electrical and Computer EngineeringTechnical University of MunichBoltzmannstrase 11D-85749 GarchingGermany

Microelectrode arrays(MEAs)provide promising opportunities to study electrical signals in neuronal and cardiac cell networks,restore sensory function,or treat disorders of the nervous ***,most of the currently investigated devices rely on silicon or polymer materials,which neither physically mimic nor mechanically match the structure of living tissue,causing inflammatory response or loss of ***,we present a new method for developing soft MEAs as bioelectronic *** functional structures are directly deposited on PDMS-,agarose-,and gelatin-based substrates using ink-jet printing as a patterning *** demonstrate the versatility of this approach by printing high-resolution carbon MEAs on PDMS and *** soft MEAs are used for in vitro extracellular recording of action potentials from cardiomyocyte-like HL-1 *** results represent an important step toward the design of next-generation bioelectronic interfaces in a rapid prototyping approach.

关键词： PDMS printing arrays

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

Scarcity events analysis in adequacy studies using CN2 rule mining

引用

Energy and AI 2022年第2期8卷 116-123页

作者： fabian Heymann Ricardo Bessa Mario Liebensteiner Konstantinos Parginos Juan Carlos Martin Hinojar Pablo Duenas Center for Power and Energy Systems INESC TEC Porto Portugal School of Business Economics and Society Friedrich-Alexander-Universitat Erlangen-Nuremberg NurembergGermany System Development ENTSO-E Brussels Belgium MIT Energy Initiative Massachusetts Institute of Technology Cambridge(MA) United States PERSEE Mines ParisTech

Dealing with scarcity events is nowadays gaining relevance in electricity market studies, as traditionally predictable generation and consumption patterns are fading. Policymakers and system planners use therefore adequacy studies to a) understand if the current market design will attract sufficient generation capacity to meet electricity demand in the future and b) to comprehend what drives system inadequacy or resource scarcity when future scenarios lack adequate capacity. This work addressed the latter and showcases a first in-its-kind rulebased methodology that filters scarcity events from a large set of electricity market simulations. In this proof-of-concept, a rule-mining algorithm is applied to outputs from ENTSO-E’s Pan-European electricity market model, which is run for 700 model scenarios, each covering 8760 time steps. The developed methodology shows how to unveil potential reasons behind scarcity events in an automated, interpretable, and scalable manner.

关键词： Electricity markets Data mining Security of supply Renewable energy Interpretability

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

Beyond cost reduction:improving the value of energy storage in electricity systems

引用

Carbon Neutrality 2022年第1期1卷 257-277页

作者： Maximilian Parzen fabian Neumann Adriaan H.Van Der Weijde Daniel Friedrich Aristides Kiprakis University of Edinburgh Institute for Energy SystemsEH93DW EdinburghUK Technische Universität Berlin Department of Digital Transformation in Energy Systems10587 BerlinGermany The Netherlands Organization for Applied Scientific Research(TNO) 2595 DA The HagueThe Netherlands

From a macro-energy system perspective,an energy storage is valuable if it contributes to meeting system objectives,including increasing economic value,reliability and *** most energy systems models,reliability and sustainability are forced by constraints,and if energy demand is exogenous,this leaves cost as the main metric for economic *** ways to improve storage technologies are to reduce their costs;however,the cheapest energy storage is not always the most valuable in energy *** techno-economical evaluation methods try to address the cost and value situation but do not judge the competitiveness of multiple technologies *** paper introduces the‘market potential method’as a new complementary valuation method guiding innovation of multiple energy *** market potential method derives the value of technologies by examining common deployment signals from energy system model outputs in a structured *** apply and compare this method to cost evaluation approaches in a renewables-based European power system model,covering diverse energy storage *** find that characteristics of high-cost hydrogen storage can be more valuable than low-cost hydrogen ***,we show that modifying the freedom of storage sizing and component interactions can make the energy system 10% cheaper and impact the value of *** results suggest looking beyond the pure cost reduction paradigm and focus on developing technologies with suitable value approaches that can lead to cheaper electricity systems in future.

关键词： Battery Hydrogen Energy storage Energy system modelling Techno-economic analysis Technology development

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

RNA vaccines for anti-tumor therapy

引用

World Journal of Experimental Medicine 2013年第4期3卷 62-73页

作者： fabian Benencia Biomedical Engineering Program Russ College of Engineering and TechnologyOhio University Molecular and Cell Biology Program Ohio University Department of Biomedical Sciences Heritage College of Osteopathic Medicine Academic Research CenterOhio University

The immune system is able to recognize tumor antigens and this has been the basis for the development of cancer immunotherapies. The immune system can be instructed to recognize and attack tumor cells by means of vaccination strategies. One such strategy involves the delivery of tumor antigen as genetic material. Herewith we describe the use of RNA encoding tumor antigens for vaccination purposes in tumor settings. RNA has features that are interesting for vaccination. Upon transfection, the RNA has no possibility of integration into the genome, and the tumor translated proteins enter the intrinsic antigen processing pathway thus enabling presentation by MHC-I molecules. This can specifically activate cytotoxic CD8 T cells that can attack and kill tumor cells. RNA can be delivered as a naked molecule for vaccination purposes or can be used to transfect dendritic cells. The combination of RNA technology with dendritic cell vaccination provides a powerful tool for cancer immunotherapies.

关键词： RNA Vaccine Dendritic cells Immunization Cytotoxic T cells Tumors

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 New Statistical Tool： Scalar Score Function

引用

Computer Technology and Application 2011年第2期2卷 109-116页

作者： Zdenek fabian Institute of Computer Science Academy of Sciences CR Pod Vod6renskou vY2i 2 Prague 182 00 Czech Republic

The basic inference function of mathematical statistics, the score function, is a vector function. The author has introduced the scalar score, a scalar inference function, which reflects main features of a continuous probability distribution and which is simple. Its simplicity makes it possible to introduce new relevant numerical characteristics of continuous distributions. The t-mean and score variance are descriptions of distributions without the drawbacks of the mean and variance, which may not exist even in cases of regular distributions. Their sample counterparts appear to be alternative descriptions of the observed data. The scalar score itself appears to be a new mathematical tool, which could be used in solving traditional statistical problems for models far from the normal one, skewed and heavy-tailed.

关键词： Statistics inference function data characteristics point estimates heavy tails.

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

In vitro Cyto and Blood Compatibility of Titanium Containing Diamond-Like Carbon Prepared by Hybrid Sputtering Method

引用

Plasma Science and Technology 2012年第9期14卷 829-836页

作者： Krishnasamy NAVANEETHA PANDIYARAJ Jan HEEG Andreas LAMPKA fabian JUNGE Torsten BARFELS Marion WIENECKE Young Ha RHEE Hyoung Woo KIM Department of Physics Sri Shakthi Institute of Engineering and Technology Institute of Surface and Thin Film Technology Hochschule WismarGermany Department of Microbiology College of Bioscience&BiotechnologyChungnam National University

In recent years, diamond-like carbon films （DLC） have been given more attention in research in the biomedical industry due to their potential application as surface coating on biomedical materials such as metals and polymer substrates. There are many ways to prepare metal containing DLC films deposited on polymeric film substrates, such as coatings from car- bonaceous precursors and some means that incorporate other elements. In this study, we in- vestigated both the surface and biocompatible properties of titanium containing DLC （Ti-DLC） films. The Ti-DLC films were prepared on the surface of poly （ethylene terephthalate）（PET） film as a function of the deposition power level using reactive sputtering technique. The films＇ hydrophilicity was studied by contact angle and surface energy tests. Their surface morphology was studied by scanning electron microscopy （SEM） and atomic force microscopy （AFM）. Their elemental chemical composition was analyzed using energy dispersive X-spectra （EDX） and X-ray photoelectron spectroscopy （XPS）. Their blood and cell compatibility was studied by in vitro tests, including tests on platelet adhesion, thrombus formation, whole blood clotting time and osteoblast cell compatibility. Significant changes in the morphological and chemical composition of the Ti-DLC films were observed and found to be a function of the deposition level. These morphological and chemical changes reduced the interfacial tension between Ti-DLC and blood proteins as well as resisted the adhesion and activation of platelets on the surface of the Ti-DLC films. The cell compatibility results exhibited significant growth of osteoblast cells on the surface of Ti incorporated DLC film compared with that of DLC film surface.

关键词： Ti-DLC hybrid reactive sputtering technique surface analysis cyto and blood compatibility

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：