检索结果-南通市图书馆

Development of Nanopowder Synthesis Using Induction Plasma

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Plasma Science and Technology 2010年第2期12卷 188-199页

作者： Richard DOLBEC Jerzy JUREWICZ maher BOULOS Tekna Plasma Systems Inc. 2935 Industrial Boulevard Sherbrooke

The application of induction plasma technology developed for the synthesis of nano- metric powders is summarized. A brief description of the scientific basis for the induction plasma processes is given, followed by the presentation of an induction plasma system developed by Tekna, together with various examples of the nanopowders synthesized using its facilities. The advantages of the induction plasma process over alternative techniques and its adaptability into industrial- scale operation is particularly illustrated. Some specific issues related to the nanopowder synthesis process are also discussed.

关键词： nano-material nanopowders induction plasma

Erratum to:Cadmium nanoclusters in a protein matrix:Synthesis,characterization,and application in targeted drug delivery and cellular imaging

在线全文

学校读者我要写书评

暂无评论

Nano Research 2024年第6期17卷 5755-5755页

作者： Morteza Sarparast Abolhassan Noori Hoda Ilkhani S.Zahra Bathaie maher F.El-Kady Lisa J.Wang Huong Pham Kristofer L.Marsh Richard B.Kaner Mir F.Mousavi Department of Chemistry Tarbiat Modares UniversityTehran 14115-175Iran Department of Clinical Biochemistry Faculty of Medical SciencesTarbiat Modares UniversityTehran 14115-111Iran Department of Chemistry and Biochemistry University of CaliforniaLos AngelesLos AngelesCA 90095USA Department of Chemistry Faculty of ScienceCairo UniversityGiza 12613Egypt California NanoSystems Institute University of CaliforniaLos AngelesLos AngelesCA 90095USA

The Electronic Supplementary Material available online erroneously only contains the first six pages of the entire supplementary material *** will find the entire supplementary material file online linked to this publisher’s *** publisher apologizes to the authors and readers for this *** Supplementary Material:Supplementary material(detailed description on procedures,and further characterizations,including synthesis,optimization,and characterization of CdNCs,HA-CdNCs,and DOX-HA-CdNCs;calculating quantum yield;a Jellium model for assigning the most valid number of the atoms in the NCs;drug loading and release;cellular uptake and cytotoxicity)is available in the online version of this article at https://***/10.1007/s12274-016-1201-z.

关键词： characterization matrix calculating

Effect of vehicle safety recalls on the perception towards other vehicles from the same country of origin

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Traffic and Transportation Engineering(English Edition) 2019年第5期6卷 493-503页

作者： Khaled Shaaban Amro maher Anusorn Singhapakdi Department of Civil and Architectural Engineering Qatar University Doha Qatar Beacom School of Business University of South Dakota Vermillion SD 57069 USA Department of Marketing Old Dominion University Norfolk VA 23529 USA

A vehicle safety recall significantly impacts the demand for these specific manufacturer *** effect of this recall on the other manufacturers from the same country of origin(COO) that are not involved in the recall is poorly *** purpose of this study is to examine the impact of a vehicle safety recall on other vehicle brands originating from the same *** study uses a case study related to Toyota recalls and the impact of the crises on the attitudes toward three other Japanese brands-namely,Honda,Nissan,and Mazda.A questionnaire was conducted with 375 participants who are familiar with the *** findings from the questionnaire indicated that product-harm crises have an indirect negative effect on brands from the same ***,brands from the transgressor’s COO should not make the transgressor’s betrayal salient,which might hurt their *** example,if Honda makes the betrayal of Toyota salient through comparative advertising,Honda’s efforts might hurt the company directly through consumers’ image of Japanese *** research should examine the extent to which comparative advertising impacts non-transgressing brands that originate from the same country as the transgressing *** current results suggest that the non-transgressing companies might even assist the transgressing company to recover from such crises if consumers perceive a strong association between the non-transgressing brands and transgressing brands.

关键词： Automotive recalls Vehicle safety Car accidents Vehicle defects Safety ratings

N4SID and MOESP Algorithms to Highlight the Ill-conditioning into Subspace Identification

在线全文

学校读者我要写书评

暂无评论

International Journal of Automation and computing 2014年第1期11卷 30-38页

作者： Slim Hachicha maher Kharrat Abdessattar Chaari Laboratory of Sciences and Techniques of Automatic Control and Computer Engineering (Lab-STA) National School of Engineering of SfaxUniversity of Sfax

In this paper,an analysis for ill conditioning problem in subspace identifcation method is *** subspace identifcation technique presents a satisfactory robustness in the parameter estimation of process model which performs *** a frst step,the main geometric and mathematical tools used in subspace identifcation are briefly *** the second step,the problem of analyzing ill-conditioning matrices in the subspace identifcation method is *** illustrate this situation,a simulation study of an example is introduced to show the ill-conditioning in subspace *** numerical subspace state space system identifcation(N4SID)and multivariable output error state space model identifcation(MOESP)are considered to study,the parameters estimation while using the induction motor model,in simulation(Matlab environment).Finally,we show the inadequacy of the oblique projection and validate the efectiveness of the orthogonal projection approach which is needed in ill-conditioning;a real application dealing with induction motor parameters estimation has been *** obtained results proved that the algorithm based on orthogonal projection MOESP,overcomes the situation of ill-conditioning in the Hankel s block,and thereby improving the estimation of parameters.

关键词： Subspace identification ill-conditioning oblique projection orthogonal projection algorithms numerical subspace state space system identification (N4SID) multivariable output error state space model identification (MOESP) induction motor

Impact of Human Vulnerabilities on Cybersecurity

在线全文

学校读者我要写书评

暂无评论

Computer Systems Science & Engineering 2022年第3期40卷 1153-1166页

作者： maher Alsharif Shailendra Mishra Mohammed AlShehri Department of Information Technology College of Computer and Information SciencesMajmaah UniversityMajmaah11952Saudi Arabia Department of Computer Engineering College of Computer and Information SciencesMajmaah UniversityMajmaah11952Saudi Arabia

Today,security is a major challenge linked with computer network companies that cannot defend against *** vulnerable factors increase security risks and cyber-attacks,including viruses,the internet,communications,and *** of Things(IoT)devices are more effective,and the number of devices connected to the internet is constantly increasing,and governments and businesses are also using these technologies to perform business activities ***,the increasing uses of technologies also increase risks,such as password attacks,social engineering,and phishing *** play a major role in the field of *** is observed that more than 39%of security risks are related to the human factor,and 95%of successful cyber-attacks are caused by human error,with most of them being insider *** major human factor issue in cybersecurity is a lack of user awareness of cyber *** study focuses on the human factor by surveying the vulnerabilities and reducing the risk by focusing on human nature and reacting to different *** study highlighted that most of the participants are not experienced with cybersecurity threats and how to protect their personal ***,the lack of awareness of the top three vulnerabilities related to the human factor in cybersecurity,such as phishing attacks,passwords,attacks,and social engineering,are major problems that need to be addressed and reduced through proper awareness and training.

关键词： Cybersecurity phishing attack password attack social engineering cybersecurity awareness security risk

ON GRAPH MEASURES IN BANACH SPACES AND DESCRIPTION OF ESSENTIAL SPECTRA OF MULTIDIMENSIONAL TRANSPORT EQUATION

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Mathematica Scientia 2012年第5期32卷 2050-2064页

作者： Boulbeba Abdelmoumen Aref Jeribi maher Mnif Dpartement de Mathmatiques Universit de SfaxFacult des Sciences de SfaxRoute de SoukraKm 3.5B.P.11713000SfaxTunisie

In this paper,we define new measures called respectively graph measure of noncompactness and graph measure of weak ***,we apply the obtained results to discuss the incidence of some perturbation results realized in [2] on the behavior of essential spectra of such closed densely defined linear operators on Banach *** results are exploited to investigate the essential spectra of a multidimensional neutron transport operator on L1 spaces.

关键词： measures of noncompactness and weak noncompactness in Banach spaces Fredholm operators essential spectra

Morphology selective construction of β-cyclodextrin functionalized Fe3O4-Bi2WO6 nanocomposite with superior adsorptivity and visible-light-driven catalytic activity

在线全文

学校读者我要写书评

暂无评论

Frontiers of Chemical Science and Engineering 2020年第4期14卷 561-578页

作者： maher Darwish Ali Mohammadi Navid Assi Samer Abuzerr Youssef Alahmad Pharmaceutical Quality Assurance Research Centre Faculty of PharmacyIntermational CampusTehran University of Medical SciencesTehranIran Department of Pharmacy Al-Safwa University CollegeKarbalalraq Nanotechnology Research Centre Faculty of PharmacyTehran University of Medical SciencesTehranIran Department of Environmental Health Engineering Faculty of Public HealthIntermational CampusTehran University of Medical SciencesTehranIran Department of Pharmaceutical Chemistry and Drug Control Faculty of PharmacyAlbaath UniversityHomsSyria

Controlled growth of Bi2WO6 nanorods with exposed[001]facets and the fabrication of an Fe2O4-Bi2WO6 magnetic composite by a microwave-assisted polyol process,were achieved in this *** adsorp-tivity and photocatalytic performance of the composite toward sunset yellow dye degradation were greatly enhanced by the β-cyclodextrin cavities on its surface,firmly anchored through a cetyltrimethylammonium bro-mide linkage.A series of examinations and characteriza-tions were carried out to determine the influence of various factors on the morphological modulation-photocatalytic behavior of the pure Bi2WO6 prior to final *** the pH of the precursor solution impacted the formation of 0D,2D,and 3D structures;however,the presence of hexamethylenetetramine surfactant induced the development of 1D nanorod structure.A reasonable crystal growth mechanism was proposed to elucidate the formation ***,the mechanism of the activity enhancement of β-cyclodextrin functionalized Fe2O4-Bi2WO6,compared to that of the non-functiona-lized samples,could be realized with the assistance of chemical trapping experiments on sunset yellow,and was confirmed on the colorless antibiotic(sulfamethoxazole).The high performance and durability of this composite can be attributed to the facet-dependent activity,large adsorp-tion capacity due to inclusion interactions,enhanced visible light absorption,and efficient charge separation.

关键词： β-cyclodextrin Bi2WO6 shape controlled nanorod sunset yellow

Evaluation of the ability of arsenic species to traverse cell membranes by simple diffusion using octanol-water and liposome-water partition coefficients

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2016年第11期28卷 222-232页

作者： Teresa Chavez-Capilla William maher Tamsin Kelly Simon Foster Ecochemistry Laboratory Institute for Applied Ecology University of Canberra Canberra ACT 2601 Australia National Centre for Forensic Studies Faculty of Education Science Technology and Mathematics University of Canberra CanberraACT 2601 Australia

Arsenic metabolism in living organisms is dependent on the ability of different arsenic species to traverse biological membranes. Simple diffusion provides an alternative influx and efflux route to mediated transport mechanisms that can increase the amount of arsenic available for metabolism in cells. Using octanol-water and liposome-water partition coefficients, the ability of arsenous acid, arsenate, methylarsonate, dimethylarsinate, thio-methylarsonate, thiodimethylarsinic acid, arsenotriglutathione and monomethylarsonic diglutathione to diffuse through the lipid bilayer of cell membranes was investigated. Molecular modelling of arsenic species was used to explain the results. All arsenic species with the exception of arsenate, methylarsonate and thio-methylarsonate were able to diffuse through the lipid bilayer of liposomes, with liposome-water partition coefficients between 0.04 and 0.13. Trivalent arsenic species and thio-pentavalent arsenic species showed higher partition coefficients, suggesting that they can easily traverse cell membranes by passive simple diffusion. Given the higher toxicity of these species compared to oxo-pentavalent arsenic species, this study provides evidence supporting the risk associated with human exposure to trivalent and thio-arsenic species.

关键词： ArsenicLiposomesPartition coefficientsPassive simple diffusionTrivalent arsenic speciesThio-arsenic species

Techno-economic analysis of the Li-ion batteries and reversible fuel cells as energy-storage systems used in green and energy-efficient 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

Clean Energy 2021年第2期5卷 273-287页

作者： Ahmad Mayyas Assia AChadly Iman Khaleel maher Maalouf Khalifa University of Science and Technology Abu DhabiUAE

Green buildings have become broadly adopted in commercial and residential sectors with the objective of minimizing environmental impacts through reductions in energy usage and water usage and,to a lesser extent,minimizing environmental disturbances from the building *** this paper,we develop and discuss a techno-economic model for a green commercial building that is 100%powered by a photovoltaic(PV)system in stand-alone configuration.A medium-sized office building in El Paso,TX was modelled to rely on a photovoltaic system to supply all of its electricity needs either directly from the PV system or through an energy-storage system(ESS)using Li-ion batteries(LIBs)or reversible fuel cells(RFCs).Cost results show that a 400-kW PV system can generate electricity at a cost of 2.21 cents/kWh in El Paso,TX and the average levelized cost of energy storage(LCOS)using 450-kW RFC is~31.3 cents/kWh,while this could reach as low as 25.5 cents/kWh using a small LIB *** the RFC provides the flexibility required to meet building-energy demand,LIBs may not be able to meet building needs unless the storage size is increased substantially,which in turn incurs more energy-storage cost,making LIBs less favourable from an economic *** analysis revealed that capital cost,discount rate and expected system lifetime play key roles in shaping the LCOS in both systems.

关键词： green-building energy-storage systems fuel cell hydrogen Li-ion batteries reversible fuel cells