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Hybrid flexural components： Testing pre-stressed steel and GIFRP bars together as reinforcement for flexural members

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Frontiers of Structural and Civil Engineering 2018年第3期12卷 352-360页

作者： Mohammed FARUQI Oved I. MATA francisco AGUINIGA Department of Civil and Architectural Engineering Texas A&M University Kingsville TX 77843 USA

Concrete members historically have used either pre-stressed steel or steel bars. In recent years there has been an increased interest in the use of fiber reinforced polymer （FRP） materials. However, the flexure behavior of a hybrid system reinforced by the combination of pre-stressed steel and glass fiber reinforced （GFRP） is still relatively unknown. The purpose of this work is to study this. Two slabs of 100 and 150-millimeter thickness, with a span of 2.1 m reinforced with both pre-stressing steel and GFRP were constructed and tested to failure using ACI 318-11 and ACI 440.1 R-15. The concrete had strength of 31 MPa and the slabs were respectively reinforced with 5#4 bars and 3#5 bars. Each slab had 37.41 mm2 prestressing wire with a failure stress of 1722.5 MPa. The experimental flexural strength and deflection of slabs were compared with their respective sizes theoretical slabs. The theoretical slabs were either reinforced with pre-stressed steel or GFRP rebars, or a hybrid system. It was found that the hybrid system produces better results.

关键词： Partial pre-stressing composite structures GFRP bars

Dipole (hyper)polarizabilities of neutral silver clusters

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Chinese Physics B 2016年第12期25卷 217-222页

作者： francisco E Jorge Luiz G M de Macedo Departarnento de Fisica Universidade Fedoral do Espirito Santo 29060-900 Vitoria Brazil Unidade Academica de Fisica Universidade Federal de Campina Grande 58429-900 Campina Grande Brazil Faculdade de Biotecnologia ICB Universidade Federal do Para 66075-110 Belem Brazil

At the Douglas-Kroll-Hess （DKI4） level, the B3PW91 functional along with the all-eleclron relativistic basis sets of valence triple and quadruple zeta qualities are used to determine the structure, stability, and electronic properties of the small silver clusters （Agn, n ≤ 7）. The results presented in this study are in good agreement with the experimental data and theoretical values obtained at a higher level of theory from the literature. Static polarizability and hyperpolarizability are also reported. It is verified that the mean dipole polarizability per atom exhibits an odd-even oscillation and that the polarizability anisotropy is directly related to the cluster shape. In this article, the first study of hyperpolarizabilities of small silver clusters is presented. Except for the monomer, the second hyperpolarizabilities of the silver clusters are significantly larger than those of the copper clusters.

关键词： B3PW91 functional all-electron basis sets non-relativistic and DKH2 calculations silver clusters,dipole (hyper)polarizabilities

Generating native user interfaces for multiple devices by means of model transformation

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Frontiers of Information Technology & Electronic Engineering 2015年第12期16卷 995-1017页

作者： Ignacio MARIN francisco ORTIN German PEDROSA Javier RODRIGUEZ Department of Research and Development CTIC Foundation Department of Computer Science University of Oviedo

In the last years, the types of devices used to access information systems have notably increased using different operating systems, screen sizes, interaction mechanisms, and software features. This device fragmentation is an important issue to tackle when developing native mobile service front-end applications. To address this issue,we propose the generation of native user interfaces(UIs) by means of model transformations, following the modelbased user interface(MBUI) paradigm. The resulting MBUI framework, called LIZARD, generates applications for multiple target platforms. LIZARD allows the definition of applications at a high level of abstraction, and applies model transformations to generate the target native UI considering the specific features of target platforms. The generated applications follow the UI design guidelines and the architectural and design patterns specified by the corresponding operating system manufacturer. The objective is not to generate generic applications following the lowest-common-denominator approach, but to follow the particular guidelines specified for each target device. We present an example application modeled in LIZARD, generating different UIs for Windows Phone and two types of Android devices(smartphones and tablets).

关键词： Model-to-model transformation Native user interfaces Model-based user interfaces Model-driven engineering

Renormings concerning exposed points and non-smoothness

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Science China Mathematics 2009年第9期52卷 1844-1848页

作者： GARCíA-PACHECO francisco Javier Department of Mathematics Texas A&M UniversityCollege Station

Intuitively, non-smooth points might look like exposed points. However, in this paper we show that real Banach spaces having dimension greater than or equal to three can be equivalently renormed to obtain non-smooth p... 详细信息

关键词： exposed point smooth point rotund point Primary 46B20, 46B03 Secondary 46B07

Green ionic metal-organic frameworks as nanocatalysts for CO_(2)fixation

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Nano Research 2025年第1期18卷 260-269页

作者： Nuria Martín Miguel Maireles-Porcar Julián Sánchez Velandia Belén Altava francisco G.Cirujano Eduardo García-Verdugo Departamento de Química Inorgánica y Orgánica Universidad Jaume IAv.Sos Baynats/nCastellóde la PlanaCastellón 12071Spain

Co,Ni,and Zn iso-reticular coordination polymers of 2,5-dihydroxyterphthalic acid(H_(2)dot)can be rapidly obtained under room temperature and aqueous conditions using either sodium or ammonium hydroxide as the bases to deprotonate the *** use of metal bromides and tetrabutylammonium hydroxide(TBAOH)as the base allows the green synthesis of ionic metal-organic frameworks(MOFs),characterized by X-ray diffraction(XRD),Fourier transform infrared(FTIR),scanning electron microscopy(SEM),thermo gravimetric analysis(TGA),H-nuclear magnetic resonance(NMR),elemental analysis,and X-ray photoelectron spectroscopy(XPS),and employed in the pressure,solvent,and additive-free CO_(2)fixation to epoxides by its cycloaddition to epichlorohydrin,exhibiting a cooperative behavior between the MOF and the ionic liquid formed within the framework,achieving TONs of the confined tetrabutylammonium bromide(TBABr)up to 700.

关键词： metal-organic frameworks(MOFs) ionic liquids heterogeneous catalysis CO_(2)conversion

Soluble interleukin 23 receptor gene therapy with adeno-associated vectors for the treatment of multiple sclerosis

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Neural Regeneration Research 2017年第10期12卷 1605-1606页

作者： ángel Edo Juan francisco Espinosa-Parrilla Gene Therapy for Central Nervous System Group Vall d'Hebron Institut de Recerca Hospital Universitari Vall d'HebronBarcelonaSpain

Gene therapy as strategy against autoimmune diseases： In the last century, human societies have witnessed remarkable improvements in wellness and life expectancy, thanks to the consolidation of mod- ern science and medicine. But, while some infectious and other dis- eases, have been almost fully controlled, pathologies associated with intrinsic factors and longevity have increased in incidence.

关键词：基因治疗多发性硬化白细胞介素腺相关病毒自身免疫性疾病可溶性受体人类社会

Ximenia americana: Chemical and Spectral Studies of Extracts of Seeds. Analysis of Trimethylsilyl Derivatives by Gas Chromatography and Mass Spectrometry

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American Journal of Analytical Chemistry 2016年第2期7卷 192-202页

作者： Romézio alves Carvalho da Silva Telma Leda Gomes de Lemos Daniele alves Ferreira francisco José Queiroz Monte Programa de Pós-Graduacao em Química Department of Organic Chemistry e Inorganic Federal University of Ceará Fortaleza Brazil

Among the numerous botanical species found in the Brazilian plant biome, Ximenia americana is widespread in the Northeast of Brazil, especially in the state of Ceará, where it is known as bush plum. Its bark, leaves and roots are used in popular medicine for the treatment of skin infections, hemorrhoids, stomach ulcers, gastric pain, among others. In this work, hexane and ethanolic extracts of X. americana seeds were subjected to silylation reactions followed by analysis of the silylated derivatives by gas chromatography-mass spectrometry (GC/MS). In the hexane extract, 18 substances were identified, where the most abundant and most important components were the Octadec-9-enoic (38.14%), (9Z,12Z)-Octadec-9,12-dienoic (18.83%), Ethanedioic (8.21%) and (Z,Z,Z)-9,12,15-Octadecatrienoic (7.22%) acids. From the ethanol extract 18 substances were also identified having D-Sucrose (29.36%), L-Sorbose (9.19%), syllo-Inositol (8.34%) and D-Glucose (7.45%) as the main components. In addition, the presence of a steroid in hexane extract and triterpenes in ethanol extract was recorded. The constituents were identified using chromatographic and spectrometric methods, especially gas chromatography-mass spectrometry. To our knowledge, this is the first study of this nature from the oil of the X. american seeds.

关键词： Ximenia americana Seeds TMS Carbohydrates Derivatives GC/MS

Differential effects of environmental climatic variables on parasite abundances in blue tit nests during a decade

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Integrative Zoology 2022年第4期17卷 511-529页

作者： francisco CASTAÑO-VÁZQUEZ Santiago MERINO Evolutionary Ecology Museo Nacional de Ciencias Naturales CSICMadridSpain

Models on climate change have predicted an increase of temperature over the earth’s surface with potential drastic effects on living *** analyzed the relationships between climatic conditions(temperature,rainfall,and wind speed)and the abundance of blood-sucking flying insects(biting midges and blackflies)and nest-dwelling ectoparasites(mites,fleas,and blowflies)collected from blue tit nests during bird breeding seasons for a period of 10 *** temperature,rainfall,and wind speed showed significant differences among *** and wind speed increased during the period of study while rainfall *** midge,blackfly,and blowfly abundances increased across years but not flea and mite *** date decreased and brood size increased across *** of year variation,parasites were related to climatic *** example,biting midge,blowfly,mite,and flea abundances were positive and significantly related to average *** also found a positive and significant relationship between abundances of Haemoproteus infections and biting midge abundances during the first year of life of birds out of ***,abundance and prevalence of Lankesterella infections in yearlings were positive and significantly related to mite abundances during the year of birth of *** and Lankesterella infections were also significantly related to climatic variables and Haemoproteus and Lankesterella infections increased across *** addition,body condition of adult females and males were negatively related to flea larvae and blowfly abundance *** body condition was also negatively related to biting midge *** in climatic conditions across years could therefore affect several parasites of birds but also to birds themselves.

关键词： biting midges blackfly blowfly Haemoproteus Lankesterella rainfall temperature

A SHORT NOTE ABOUT EXPOSED POINTS IN REAL BANACH SPACES

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Acta Mathematica Scientia 2008年第4期28卷 797-800页

作者： Antonio Aizpuru francisco J Garcia-Pacheco Departamento de Matemá ticas Universidad de Cá diz Department of Mathematical Sciences Kent State University

We express the set of exposed points in terms of rotund points and non-smooth *** long as we have Banach spaces each time＂bigger＂,we consider sets of non-smooth points each time＂smaller＂.

关键词： Exposed point exposed face rotund point smooth point