Materials Literature
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Certains polymeres synthetiques biodegradables ont montre des proprietes physico-chimiques aussi interessantes que celles des plastiques issus du petrole. Cependant, leur cout eleve du au prix des matieres premieres ainsi qu’au faible nombre de voies de synthese efficaces empechent leur rentabilite. Une des alternativ…
This thesis presents the design, development, commissioni ng and characterization of a novel Penning trap in the framework of the experiment for the direct determination of the g -factor of a single proton. This trap is distinguished by the fact that the field lines of an external homogeneous magnetic field are distor…
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Dendrimers are a class of monodisperse polymeric macromolecules with a well defined and highly branched three-dimensional architecture. Their well-defined structure and structural precision makes them outstanding candidates for the development of new types of multifunctional super-molecules and materials with applicat…
Copolymérisation monoxyde de carbone/hétérocycle : nouveaux catalyseurs et nouveaux polymères biodégradables Certains polymères synthétiques biodégradables ont montré des propriétés physico-chimiques aussi intéressantes que celles des plastiques issus du pétrole. Cependant, leur coût élevé dû au prix des matières prem…
Non-doped ZnO thin film on glass substrate was grown at 150℃ by spray pyrolysis using diethylzinc-based solution. The ZnO film had high transmittance (over 80%), and the sheet resistivity was drastically reduced by performing UV irradiation on these samples. In this work, we investigated the photocatalytic effect of Z…
Ga-doped ZnO thin films were grown on glass substrate by a conventional spray method at 150℃ using Diethyl zinc based solution. The Ga-doped ZnO thin films had a low sheet resistivity of 15.0Ω/sq. , a carrier concentration of 2.0×10^<20> cm^<-3> and mobility of 20.0 cm^2 (Vs)^<-1> at optimal Ga content of 2 at% upon h…
Cu–III–VI_2 compounds have attracted considerable interest because of their possible photovoltaic applications. The ternary semiconductor copper indium sulfide (CuInS_2) is one of the promising materials for thin film solar cells because its bandgap energy of 1.5 eV and the absorption coefficient of 10^5 cm^<-1>. CuIn…
Phosphate compounds have lower melting points than other inorganic oxide materials as well as wide band gap and good stability. The luminescence spectrum of divalent europium (Eu^<2+>) has characterized by intense and broad peak excited by UV light. Then Eu doped phosphates are one of the useful phosphor in the visibl…
The quaternary compound Cu_2ZnSnS_4 (CZTS) single crystals were successfully grown by Traveling Heater Method (THM). We determined that suitable THM growth conditions for CZTS single crystals are a Sn solution with X = 70 mol% and growth temperature of 900˚C, on the basis of the CZTS-Sn pseudobinary phase diagram. Tem…
Waste management is a serious problem over the world due to the huge amount of waste materials produced and increased annually. This paper investigates the development of solidification technology, based on the formation of ettringite, for fluorine contaminated bassanite using waste and recycled materials. For this pu…
Certains polymères synthétiques biodégradables ont montré des propriétés physico-chimiques aussi intéressantes que celles des plastiques issus du pétrole. Cependant, leur coût élevé dû au prix des matières premières ainsi qu’au faible nombre de voies de synthèse efficaces empêchent leur rentabilité. Une des alternativ…
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83.080.01
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES
Neste trabalho, foi realizado o crescimento de nanotubos de carbono pela técnica de deposição química a vapor (CVD) térmica catalítica, utilizando-se filmes finos de níquel como material catalisador, gás metano (CH4) como fonte de hidrocarboneto e nitrogênio (N2) como gás de arraste. Amostras processadas sobre filmes…
This thesis concerns the development and evaluation of nanoparticles for cancer treatment, and in particular to prostate cancer. The manuscript includes a literature review on the application of nanomedicine to the treatment of prostate cancer. In the first experimental part, functionalized gold nanoparticles were cha…
Sinais diversos estão presentes em nosso cotidiano, assim como nas medidas realizadas nas atividades de ciência e tecnologia. Dentre estes sinais, tem grande importância tecnológica aqueles associados à corrosão de estruturas metálicas. Assim, esta tese propõe o estudo de um esquema local de transformada de Fourier ja…
El propósito de este estudio es obtener información sobre las plantas medicinales que tienen mayor uso y comercialización en la población del municipio de León. El objetivo principal ha sido conocer las plantas medicinales utilizadas por la población leonesa en el periodo de julio-diciembre de 2005. Dada la falta de a…