检索结果-南通市图书馆

journal of Energy Chemistry 2017年第5期26卷 948-955页

作者： Paulina Olavarría Elizabeth Vera enrique j.lima Heriberto Pfeiffer Laboratorio de Fisicoquímica y Reactividad de Superficies(LaFReS) Instituto de Investigaciones en MaterialesUniversidad Nacional Autońoma de MexicoCircuito exterior s/nCd.UniversitariaDel.Coyoacan C.P.04510Ciudad de MéxicoMexico

Pentalithium aluminate（β-LiAlO） and the corresponding iron-containing solid solution(Li(AlFe)O)were synthetized by solid-state reaction. All the samples were characterized structural and microstructurally by X-ray diffraction, solid-state nuclear magnetic resonance, scanning electron microscopy, Nadsorption-desorption and temperature-programmed desorption of CO. Results showed that 30 mol% of iron can be incorporated into the β-LiAlOcrystalline structure at aluminum positions. Moreover, iron addition induced morphological and superficial reactivity variations. Li(AlFe)Osamples chemisorbed CObetween 200 and 700 °C, where the superficial chemisorption presented the highest enhancement,in comparison to β-LiAlO. Additionally, Li(AlFe)Osamples sintered at higher temperatures thanβ-LiAlO. Isothermal COchemisorption experiments of β-LiAlOand Li(AlFe)Owere fitted to a first order reaction model, corroborating that iron enhances the COchemisorption, kinetically. When oxygen was added to the gas flow, COchemisorption process was mainly enhanced between 400 and 600 °C for the Li(AlFe)Osample in comparison to β-LiAlO. Hence, Li(AlFe)Osolid solution presented an enhanced COchemisorption process, in the presence and absence of oxygen, in comparison to β-LiAlO.

关键词： Lithium aluminate CO2 chemisorption Solid solution Thermogravimetry

Graphene's photonic and optoelectronic properties——A review

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2020年第3期29卷 13-35页

作者： A j Wirth-lima P P Alves-Sousa W Bezerra-Fraga Department of Physics Federal Institute of EducationScience and Technology of Ceara Campus SobralCearaBrazil Postgraduate Program in Electrical Engineering and Computing Federal University of Ceara(U.F.C.)Sobral CearaBrazil

Due to its remarkable electrical and optical properties,graphene continues to receive more and more attention from researchers around the *** excellent advantage of graphene is the possibility of controlling its charge density,and consequently,the management of its conductivity and dielectric constant,among other *** is noteworthy that the control of these properties enables the obtaining of new optical/electronic devices,which would not exist based on conventional ***,to work in this area of science,it is necessary to have a thorough knowledge regarding the electrical/optical properties of *** this review paper,we show these graphene properties very well detailed.

关键词： absorbance conductivity dielecric constant dispersion relation

Expansion Planning for Renewable Integration in Power System of Regions with Very High Solar Irradiation

在线全文

学校读者我要写书评

暂无评论

journal of Modern Power Systems and Clean Energy 2021年第3期9卷 485-494页

作者： Musfer Alraddadi Antonio j.Conejo Ricardo M.lima the Department of Electrical and Computer Engineering The Ohio State UniversityColumbusOH 43210USA the Department of Integrated Systems Engineering and the Department of Electrical and Computer Engineering The Ohio State UniversityColumbusOH 43210USA King Abdullah University of Science and Technology Thuwal 23955-6900Kingdom of Saudi Arabia

In this paper,we address the long-term generation and transmission expansion planning for power systems of regions with very high solar *** target the power systems that currently rely mainly on thermal generators and that aim to adopt high shares of renewable *** propose a stochastic programming model with expansion alternatives including transmission lines,solar power plants(photovoltaic and concentrated solar),wind farms,energy storage,and flexible combined cycle gas *** model represents the longterm uncertainty to characterize the demand growth,and the short-term uncertainty to characterize daily solar,wind,and demand *** use the Saudi Arabian power system to illustrate the functioning of the proposed model for several cases with different renewable integration *** results show that a strong dependence on solar power for high shares of renewable sources requires high generation capacity and storage to meet the night demand.

关键词： Generation and transmission expansion planning uncertainty solar power wind power

Comparisons of electrical and optical properties between graphene and silicene A review

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2018年第2期27卷 299-313页

作者： Wirth-lima A j Silva M G Sombra A S B Laboratory of Telecommunications and Materials Science and Engineering-www.locem.ufc.br-Fortaleza CearaBrazil Department of Physics Science CenterFederal University of Ceara(U.F C.)-FortalezaCear4Brazil State University of Vale do Acarau SobralCeardBrasil

Two-dimensional （2D） metamaterials are considered to be of enormous relevance to the progress of all exact sciences. Since the discovery of graphene, researchers have increasingly investigated in depth the details of electrical/optical proper- ties pertinent to other 2D metamaterials, including those relating to the silicene. In this review are included the details and comparisons of the atomic structures, energy diagram bands, substrates, charge densities, charge mobilities, conductivities, absorptions, electrical permittivities, dispersion relations of the wave vectors, and supported electromagnetic modes related to graphene and silicene. Hence, this review can help readers to acquire, recover or increase the necessary technological basis for the development of more specific studies on graphene and silicene.

关键词： graphene silicene electrical/optical properties

The Category of Humanity: Language as a Reflection of the Opposition between the Natural Sphere and the Human Sphere

在线全文

学校读者我要写书评

暂无评论

Language and Semiotic Studies 2019年第2期5卷 37-52页

作者： enrique j.Vercher García University of Granada

The article analyses the way in which human languages classify reality into two large categories: the natural sphere and the human sphere. Thus, a given language will use the resources of its different linguistic levels(phonetic-phonological, morphological, syntactic, and lexical) to configure the references of reality and classify them based on what the speaker considers as belonging to the sphere of human society or the sphere of nature, outwith the human community. The same object, animal, phenomenon, or event may be treated(and evaluated) differently depending on whether the speakers of a given language consider it as belonging to the human sphere or the natural sphere.

关键词： linguistics cognitive linguistics linguistic anthropology linguoculturology natural languages linguistic categories human/non-human

Representation of robotic fractional dynamics in the pseudo phase plane

在线全文

学校读者我要写书评

暂无评论

Acta Mechanica Sinica 2011年第1期27卷 28-35页

作者： Miguel F.M.lima j.A.Tenreiro Machado School of Technology of Viseu Dept.of Electrical Engineering Campus Politécnico de Repeses Institute of Engineering of Porto Dept.of Electrical Engineering Rua Dr.António Bernardino de Almeida

This paper analyses robotic signals in the perspective of fractional dynamics and the pseudo phase plane （PPP）.It is shown that the spectra of several experimental signals can be approximated by trend lines whose slope characterizes their fractional *** the PPP reconstruction of each signal,the time lags are calculated through the fractal ***,to obtain a smooth PPP,the noisy signals are filtered through *** behavior of the spectra reveals a relationship with the fractal dimension of the PPP and the corresponding time delay.

关键词： Pseudo phase plane Fractional calculus Mutual information Fractal dimension Robotics

Adverse hepatic reactions associated with calcium carbimide and disulfiram therapy: Is there still a role for these drugs?

在线全文

学校读者我要写书评

暂无评论

World journal of Gastroenterology 2006年第31期12卷 5078-5080页

作者： Carmen Verge M Isabel Lucena enrique López-Torres M josé Puche-García enrique Fraga Manuel Romero-Gomez Raúl j Andrade Clinical Pharmacology ServiceVirgen de la Victoria University Hospital School of MedicineMálagaSpain Gastroenterology ServiceUniversity Hospital Reina Sofia CórdobaSpain Gastroenterology ServiceUniversity Hospital Virgen de Valme SevillaSpain Liver UnitDepartment of Gastroenterology University HospitalMálagaSpain

Disulfiram and calcium carbimide are two alcohol deterrants widely used in alcoholism treatment, however, there exist great concerns over their safety. Reports on hepatotoxicity, mainly related to disulfiram therapy, have been published. The hepatotoxic potential of calcium carbimide is less well characterized. Here, we describe four cases of liver damage related to this therapeutic group that were submitted to a Registry of hepatotoxicity and point out the limitations that we face when prescribing these compounds. A reassessment of the role of these compounds in the management of alcohol dependence is clearly needed.

关键词： Calcium carbimide Disulfiram Hepatotoxicity

Leukocyte driven-decidual angiogenesis in ***

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

Cellular & Molecular Immunology 2014年第6期11卷 522-537页

作者： Patricia DA lima jianhong Zhang Caroline Dunk Stephen j Lye B Anne Croy Ottawa Hospital Research Institute The Ottawa Hospital General Campus Critical Care Wing Ottawa ON Canada Research Centre for Women's and Infants' Health Lunenfeld-Tanenbaum Research Institute Mount Sinai Hospital Toronto ON Canada Department of Physiology and University of Toronto Toronto ON Canada Department of Obstetrics and Gynecology University of Toronto Toronto ON Canada Department of Biomedical and Molecular Sciences Queen's University Kingston ON Canada

Successful pregnancy and long-term, post-natal maternal and offspring cardiac, vascular and metabolic health require key maternal cardiovascular adaptations over gestation. Within the pregnant decidualizing uterus, coordinated vascular, immunological and stromal cell changes occur. Considerable attention has been given to the roles of uterine natural killer （uNK） cells in initiating decidual spiral arterial remodeling, a process normally completed by mid-gestation in mice and in humans. However, leukocyte roles in much earlier, region specific, decidual vascular remodeling are now being defined. Interest in immune cell-promoted vascular remodeling is driven by vascular aberrations that are reported in human gestational complications such as infertility, recurrent spontaneous abortion, preeclampsia （PE） and fetal growth restriction. Appropriate maternal cardiovascular responses during pregnancy protect mothers and their children from later cardiovascular disease risk elevation. One of the earliest uterine responses to pregnancy in species with hemochorial placentation is stromal cell decidualization, which creates unique niches for angiogenesis and leukocyte recruitment. In early decidua basalis, the aspect of the implantation site that will cradle the developing placenta and provide the major blood vessels to support mature placental functions, leukocytes are greatly enriched and display specialized properties. UNK cells, the most abundant leukocyte subset in early decidua basalis, have angiogenic abilities and are essential for normal early decidual angiogenesis. The regulation of uNK cells and their roles in determining maternal and progeny cardiovascular health over ore^nancv and PostPartum are discussed.

关键词： angiokines blood vessel decidua endometrium natural killer cell receptors uterine natural killer cell

Effect of an electron gas on a neutron-rich nuclear pasta

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

Nuclear Science and Techniques 2015年第2期26卷 75-82页

作者： jorge Alberto Lopez enrique Ramirez-Homs Department of Physics University of Texas at El Paso

We studied the role that electron gas has on the formation of nuclear structures at subsaturation densities and low temperatures(T<1 Me V).Using a classical molecular dynamics model we studied isospin symmetric and as... 详细信息

We studied the role that electron gas has on the formation of nuclear structures at subsaturation densities and low temperatures(Tjects,reduces the isospin content,and modifies the nucleon average displacement,but does not affect the inter-nucleon distance in *** nuclear structures are also found to change shapes by different degrees depending on their isospin content,temperature and density.

关键词：电子气体分子动力学模型面食中子相互作用强度核结构同位旋平均位移

Critical Behaviour of the Ising S=1/2 and S=1 Model on(3,4,6,4)and(3,3,3,3,6)Archimedean Lattices

在线全文

学校读者我要写书评

暂无评论

Communications in Computational Physics 2011年第9期10卷 912-919页

作者： F.W.S.lima j.Mostowicz K.Malarz Dietrich Stauffer Computational Physics Lab Departamento de FisicaUniversidade Federal do Piaui64049-550 TeresinaPiauiBrazil Faculty of Physics and Applied Computer Science AGH University of Science and Technologyal.Mickiewicza 30PL-30059 KrakowPoland.

We investigate the critical properties of the Ising S=1/2 and S=1 model on(3,4,6,4)and(34,6)Archimedean *** system is studied through the extensive Monte Carlo *** calculate the critical temperature as well as the critical point exponentsγ/ν,β/ν,andνbasing on finite size scaling *** calculated values of the critical temperature for S=1 are kBTC/j=1.590(3),and kBTC/j=2.100(4)for(3,4,6,4)and(34,6)Archimedean lattices,*** critical exponentsβ/ν,γ/ν,and 1/ν,for S=1 areβ/ν=0.180(20),γ/ν=1.46(8),and 1/ν=0.83(5),for(3,4,6,4)and 0.103(8),1.44(8),and 0.94(5),for(34,6)Archimedean *** results differ from the Ising S=1/2 model on(3,4,6,4),(34,6)and square *** evaluated effective dimensionality of the system for S=1 are Deff=1.82(4),for(3,4,6,4),and Deff=1.64(5)for(34,6).

关键词： Monte Carlo simulation Ising model critical exponents