检索结果-南通市图书馆

同方期刊数据库

High entropy fluorides as conversion cathodes with tailorable electrochemical performance

在线全文

学校读者我要写书评

暂无评论

journal of Energy Chemistry 2022年第9期31卷 342-351,I0010页

作者： Yanyan Cui Parvathy Anitha Sukkurji Kai Wang Raheleh Azmi Alexandra MNunn Horst Hahn ben Breitung Yin-Ying Ting Piotr MKowalski Payam Kaghazchi Qingsong Wang simon Schweidler Miriam Botros Institute of Nanotechnology Karlsruhe Institute of Technology(KIT)Hermann-von-Helmholtz-Platz 176344 Eggenstein-LeopoldshafenGermany Institute for Applied Materials±Energy Storage Systems Karlsruhe Institute of Technology(KIT)Hermann-von-Helmholtz-Platz 176344 Eggenstein-LeopoldshafenGermany Faculty of Science University of WaterlooWaterlooON N2L 3G1Canada KIT-TUD-joint Research Laboratory Nanomaterials Technical University DarmstadtDarmstadt 64287Germany Theory and Computation of Energy Materials(IEK-13) Institute of Energy and Climate ResearchForschungszentrum Jülich GmbH52425 JülichGermany Materials Synthesis and Processing(IEK-1) Institute of Energy and Climate ResearchForschungszentrum Jülich GmbH52425 JülichGermany

With the recent development of high entropy materials, an alternative approach to develop advanced functional materials with distinctive properties that show improved values compared to conventional materials has been provided. The high entropy concept was later successfully transferred to metal fluorides and high entropy fluorides(HEFs) were successfully synthesized. Owing to their high theoretical specific capacities in energy storage applications, HEFs were utilized as cathode materials for lithiumion batteries(LIBs) and their underlying storage mechanisms were investigated. Instead of a step-bystep reduction of each individual metal cation, the HEFs seem to exhibit a single-step reduction process,indicating a solid solution compound instead of merely a mixture of different metal fluorides. It was also observed that the electrochemical behavior of the HEFs depends on each individual incorporated element. Therefore, by altering the elemental composition, new materials that exhibit improved electrochemical properties can be designed. Remarkably, HEFs with seven incorporated metal elements exhibited a better cycling stability as well as a lower hysteresis compared to binary metal *** findings offer new guidelines for material design and tailoring towards high performance LIBs.

关键词： High entropy materials High entropy fluorides Conversion cathodes Tailored electrochemistry Li-ion batteries

Length–mass allometries in amphibians

在线全文

学校读者我要写书评

暂无评论

Integrative Zoology 2018年第1期13卷 36-45页

作者： Luca SANTINI Ana benÍTEZ-LÓPEZ gentile Francesco FICETOLA Mark A.j.HUIjBREgTS Department of Environmental Science Institute for Wetland and Water ResearchFaculty of ScienceRadboud UniversityNijmegenthe Netherlands Department of Bioscience University of MilanMilanItaly Alpine Ecology Laboratory Grenoble Alpes UniversityGrenobleFrance PBL Netherlands Environmental Assessment Agency The Haguethe Netherlands

Body mass is rarely recorded in amphibians,and other body measurements(*** to vent length,SVL)are generally collected ***,length measurements,when used as proxies of body mass in comparative analyses,are problematic if different taxa and morphotypes are *** developed allometric relationships to derive body mass from SVL *** fitted phylogenetic generalized least square models for frogs(Anura)and salamanders(Caudata)and for several families *** tested whether allometric relationships differed between species with different habitat preferences and between morphs in *** were fitted with SVL-mass measurements for 88 frog and 42 salamander *** assessed the predictive performance of the models by ***,the models showed high explained variance and low forecasting *** differed among semi-aquatic,terrestrial and arboreal frogs,and between paedomorphic and non-paedomorphic *** mass estimates derived from our models allow for comparability of studies on multiple taxa and can be used for testing theories built upon evolutionary and ecological processes which are directly related to body mass.

关键词： Anura body size body weight Caudata SVL

Extravascular use of drug-eluting beads: A promising approach in compartment-based tumor therapy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World journal of gastroenterology 2013年第43期19卷 7586-7593页

作者： simon Binder Andrew L Lewis j-Matthias Lhr Michael Keese Faculty of Medicine Mannheim University of Heidelberg68167 MannheimGermany Biocompatibles UK Ltd. Department for Research and DevelopmentFarnham GU98QL SurreyUnited Kingdom Karolinska Institute Department of Clinical ScienceIntervention and Technology17177 StockholmSweden Clinic for Vascular and Endovascular Surgery University Hospital Frankfurt60590 Frankfurt am MainGermany

Intraperitoneal carcinomatosis(PC)may occur with several tumor *** prognosis of patients suffering from PC is usually *** treatment depends on the cancer entity and includes systemic chemotherapy,radiation therapy,hormonal therapy and surgical *** few patients may also benefit from hyperthermic intraperitoneal chemotherapy with a complete tumor *** therapies are often accompanied by severe systemic *** approach to reduce side effects is to target chemotherapeutic agents to the tumor with carrier *** experimental results have been achieved using drug-eluting beads(DEBs).A series of in vitro and in vitro experiments has been conducted to determine the suitability of their extravascular *** encapsulation devices were able to harbor CYP2B1producing cells and to shield them from the hosts immune system when injected *** this way ifosfamide-which is transformed into its active metabolites by CYP2B1-could be successfully targeted into pancreatic tumor *** DEBs can be used to target chemotherapeutics into the abdominal cavity for treatment of *** CYP2B1 producing cells are proven to be save for usage in man and if local toxic effects of chemotherapeutics can be controlled,DEBs will become promising tools in compartmentbased anticancer treatment.

关键词： Compartment based therapy Intraperitoneal Drug-eluting beads Carcinomatosis Hyperthermic intraperitoneal chemotherapy glioblastoma Pancreatic cancer CYP2B1 Ifosfamide

Semi-supervised learning based hybrid beamforming under time-varying propagation environments

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Digital Communications and Networks 2024年第4期10卷 1168-1177页

作者： Yin Long Hang Ding simon Murphy School of Computer Science and Technology Southwest University of Science and TechnologyMianyang621000China Department of Computing Science University of AlbertaEdmontonT6G 2R3Canada

Hybrid precoding is considered as a promising low-cost technique for millimeter wave(mm-wave)massive Multi-Input Multi-Output(MIMO)*** this work,referring to the time-varying propagation circumstances,with semi-supervised Incremental Learning(IL),we propose an online hybrid beamforming ***,given the constraint of constant modulus on analog beamformer and combiner,we propose a new broadnetwork-based structure for the design model of hybrid *** with the existing network structure,the proposed network structure can achieve better transmission performance and lower ***,to enhance the efficiency of IL further,by combining the semi-supervised graph with IL,we propose a hybrid beamforming scheme based on chunk-by-chunk semi-supervised learning,where only few transmissions are required to calculate the label and all other unlabelled transmissions would also be put into a training data *** the existing single-by-single approach where transmissions during the model update are not taken into the consideration of model update,all transmissions,even the ones during the model update,would make contributions to model update in the proposed *** the model update,the amount of unlabelled transmissions is very large and they also carry some information,the prediction performance can be enhanced to some extent by these unlabelled channel *** results demonstrate the spectral efficiency of the proposed method outperforms that of the existing single-by-single ***,we prove the general complexity of the proposed method is lower than that of the existing approach and give the condition under which its absolute complexity outperforms that of the existing approach.

关键词： Hybrid beamforming Time-varying environments Broad network Semi-supervised learning Online learning

Automatic Classification of Superimposed Modulations for 5g MIMO Two-Way Cognitive Relay Networks

在线全文

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2022年第1期70卷 1799-1814页

作者： Haithem ben Chikha Ahmad Almadhor jouf University College of Computer and Information SciencesComputer Engineering and Networks DepartmentSakaka72388Kingdom of Saudi Arabia

To promote reliable and secure communications in the cognitive radio network,the automatic modulation classification algorithms have been mainly proposed to estimate a single *** this paper,we address the classification of superimposed modulations dedicated to 5g multipleinput multiple-output(MIMO)two-way cognitive relay network in realistic channels modeled with Nakagami-m *** purpose consists of classifying pairs of users modulations from superimposed *** achieve this goal,we apply the higher-order statistics in conjunction with the Multi-BoostAB *** use several efficiency metrics including the true positive(TP)rate,false positive(FP)rate,precision,recall,F-Measure and receiver operating characteristic(ROC)area in order to evaluate the performance of the proposed algorithm in terms of correct superimposed modulations *** simulations prove that our proposal allows obtaining a good probability of classification for ten superimposed modulations at a low signal-to-noise ratio,including the worst case(i.e.,m=0.5),where the fading distribution follows a one-sided gaussian *** also carry out a comparative study between our proposal usingMultiBoostAB classifier with the decision tree(j48)*** results show that the performance of MultiBoostAB on the superimposed modulations classifications outperforms the one of j48 *** addition,we study the impact of the symbols number,path loss exponent and relay position on the performance of the proposed automatic classification superimposed modulations in terms of probability of correct classification.

关键词： Automatic classification MIMO two-way cognitive relay network Nakagami-m channels superimposed modulations 5g

Autoregressive neural networks with exogenous variables for indoor temperature prediction in buildings

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Building Simulation 2021年第1期14卷 165-178页

作者： benoit Delcroix jérôme Le Ny Michel Bernier Muhammad Azam Bingrui Qu jean-simon Venne Department of Mechanical Engineering Polytechnique Montréal2500 Chemin de PolytechniqueMontréalQCH3T 1J4Canada Department of Electrical Engineering and gERAD Polytechnique Montréal2500 Chemin de PolytechniqueMontréalQCH3T 1J4Canada Smart Building Lab BrainBox AIMontréalQCCanada

Thermal models of buildings are helpful to forecast their energy use and to enhance the control of their mechanical ***,these models are building-specific and require a tedious,error-prone and time-consuming development effort relying on skilled building energy *** to white-box and gray-box models,data-driven(black-box)models require less development time and a minimal amount of information about the building *** this paper,autoregressive neural network models are compared to gray-box and black-box linear models to simulate indoor *** models are trained,validated and compared to actual experimental data obtained for an existing commercial building in Montreal(QC,Canada)equipped with roof top units for air *** show that neural networks mimic more accurately the thermal behavior of the building when limited information is available,compared to gray-box and black-box linear *** gray-box model does not perform adequately due to its under-parameterized nature,while the linear models cannot capture non-linear phenomena such as radiative heat transfer and ***,the neural network models outperform the alternative models in the presented application,reaching a coefficient of determination R2 up to 0.824 and a root mean square error down to 1.11℃,including the error propagation over time for a 1-week period with a 5-minute *** considering a 50-hour time horizon,the best neural networks reach a much lower root mean square error of around 0.6℃,which is suitable for applications such as model predictive control.

关键词： thermal model building simulation experimental validation multi-layer perceptron linear vs.non-linear black-box vs.gray-box

Assessing the Impact of Catastrophic Electricity Loss on the Food Supply Chain

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International journal of Disaster Risk Science 2024年第4期15卷 481-493页

作者： simon Blouin Alexander Herwix Morgan Rivers Ross j.Tieman David C.Denkenberger Alliance to Feed the Earth in Disasters(ALLFED) LafayetteCO 80026USA Cologne Institute for Information Systems University of Cologne50969 CologneGermany Department of Mechanical Engineering University of CanterburyChristchurch 8041New Zealand

The food supply chain's heavy reliance on electricity poses significant vulnerabilities in the event of prolonged and widespread power disruptions. This study introduces a system-dynamics model that integrates five critical infrastructures-electric grid, liquid fossil fuels, Internet, transportation, and human workforce-to evaluate the resilience of food supply chains to major power outages. We validated the model using the 2019 Venezuelan blackouts as a case study, demonstrating its predictive validity. We then explored how more extreme electricity losses would disrupt the supply chain. More specifically, we modeled the impact of a large-scale cyberattack on the US electric grid and a high-altitude electromagnetic pulse(HEMP)event. A cyberattack severely damaging the US electric grid and allowing for recovery within a few weeks or months would lead to substantial drops in food consumption. However, it would likely still be possible to provide adequate calories to everyone, assuming that food is equitably distributed. In contrast, a year-long recovery from a HEMP event affecting most of the continental United States could precipitate a state of famine. Our analysis represents a first attempt at quantifying how food availability progressively worsens as power outages extend over time. Our open-source model is made publicly available, and we encourage its application to other catastrophic scenarios beyond those specifically considered in this work(for example, extreme solar storms, high-lethality pandemics).

关键词： Cyberattack Electricity Food supply chains global catastrophic risk High-altitude electromagnetic pulse System dynamics

Pharmacological applications of a novel neoepitope antibody to a modified amyloid precursor protein-derived beta-secretase product

在线全文

学校读者我要写书评

暂无评论

Protein & Cell 2011年第7期2卷 573-584页

作者： guoxin Wu Sethu Sankaranarayanan Donna L.Montgomery Adam j.simon Zhiqiang An Mary j.Savage Department of Neurology Merck Research LaboratoryWest PointPA 19486USA Department of Biologics Research Merck Research LaboratoryWest PointPA 19486USA

We have previously described a novel artificial NFEVβ-secretase(BACE1)cleavage site,which when introduced into the amyloid-βprecursor protein(APP),significantly enhances APP cleavage by BACE1 in in vitro and cellular *** this study,we describe the identification and characterization of a single chain fragment of variable region(scFv),specific to the EV neo-epitope derived from BACE1 cleavage of the NFEV-containing peptide,and its conversion to *** the scFv displayed on phage and EV-Igg1 show exquisite specificity for binding to the EV neoepitope without cross-reactivity to other NFEV containing peptides or WT-APP KMDA cleavage ***-Igg1 can detect as little as 0.3 nmol/L of the EV ***-Igg1 antibody was purified,conjugated with alkaline phosphatase and utilized in various biological *** the BACE1 enzymatic assay using NFEV substrate,a BACE1 inhibitor MRK-3 inhibited cleavage with an IC50 of 2.4 nmol/L with excellent *** an APP_NFEV stable SH-SY5Y cellular assay,the EC_(50) for inhibition of EV-Aβ peptide secretion with MRK-3 was 236 nmol/L,consistent with values derived using an EV polyclonal *** an APP_NFEV knock-in mouse model,both Aβ_EV40 and Aβ_EV42 peptides in brain homogenate showed excellent gene dosage *** conclusion,the EV neoepitope specific monoclonal antibody is a novel reagent for BACE1 inhibitor discovery for both in vitro,cellular screening assays and in vivo biochemical *** methods described herein are generally applicable to novel synthetic substrates and enzyme targets to enable robust screening platforms for enzyme inhibitors.

关键词： scFv antibody BACE1 amyloid-βprecursor protein(APP) immunoassay

An Improved Experiment to Determine the‘Past of a Particle’in the Nested Mach-Zehnder Interferometer

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 2017年第2期34卷 4-6页

作者： A.ben-Israel L.Knips j.Dziewior j.Meinecke A.Danan H.Weinfurter L.Vaidman Raymond and Beverly Sackler School of Physics and Astronomy Tel-A viv UniversityTel-A viv 69978Israel Max-Planck-Institut für Quantenoptik Hans-Kopfermann-Straβe 1Garching 85748Germany Department für Physik Ludwig-Maxirnilians-UniversitatMunchen 80797Germany

We argue that the modification proposed by Li et al. [Chin. Phys. Lett. 32 （2015）050303] to the experiment of Danan et al. [Phys. Rev. Lett. 111 （2013） 240402] does not test the past of the photon as characterized by local weak traces. Instead of answering the questions：（i） were the photons in A？（ii） were the photons in B？ and （iii） were the photons in C？ the proposed experiment measures a degenerate operator answering the questions：（i） were the photons in A？ and （ii） were the photons in B and C together？ A negative answer to the last question does not tell us if photons were present in B or C. On the other hand, a simple variation of the proposal by Li et al. does provide conceptually better evidence for the past of the pre- and post-selected photon, but this evidence will be in agreement with the results of Danan et al.

关键词： Li In in the Nested Mach-Zehnder Interferometer An Improved Experiment to Determine the