نتایج جستجو برای: solgel processes
تعداد نتایج: 528399 فیلتر نتایج به سال:
β-CuGaO2 is a wurtzite-derived phase that promising for ferroelectric and photovoltaic applications. Its bandgap measured in the form of powders about 1.5 eV direct according to density functional theory calculations, making it an appropriate solar light absorber. In this work, we describe our attempts grow complex by pulsed laser deposition (PLD) resulted growing mostly CuGa2O4 on various crys...
Erbium/ytterbium-dopped Y0.9Er0.1−xYbxVO4 samples with x = 0, 0.01, 0.05 and 0.09 were synthesized by hydrothermal synthesis at basic pH urea addition. For comparison purposes, another sample 0 was also prepared the solgel method. X-ray diffraction patterns indexed on basis to a tetragonal symmetry of space group I41/amd Z 4 compatible zircon-type, in good agreement FTIR spectra. Additionally, ...
data envelopment analysis (dea) is a powerful tool for measuring relative efficiency of organizational units referred to as decision making units (dmus). in most cases dmus have network structures with internal linking activities. traditional dea models, however, consider dmus as black boxes with no regard to their linking activities and therefore do not provide decision makers with the reasons...
Introduction. In addition to good biological properties, biomaterials should also possess appropriate physical properties in order provide stability and longevity at the place of application. The aim this work was evaluate an experimental nanostructured material based on calcium aluminate (CAL) silicate (CS). Material method. research used synthesized by hydrothermal solgel method from individu...
The phenomenon of evanescent-wave scattering (EWS) is used to design an optical-fiber humidity sensor. Porous solgel silica (PSGS) coated on the surface of a silica optical-fiber core scatters evanescent waves that penetrate the coating layer. Water molecules in the gas phase surrounding the optical fiber can be absorbed into the inner surface of the pores of the porous silica. The absorbed wat...
like any other learning activity, translation is a problem solving activity which involves executing parallel cognitive processes. the ability to think about these higher processes, plan, organize, monitor and evaluate the most influential executive cognitive processes is what flavell (1975) called “metacognition” which encompasses raising awareness of mental processes as well as using effectiv...
demographic changes in germany show the fastest progress of all european countries and are not only influencing socioeconomic issues but also the management of patients with their individual risc profile. especially severely injured elderly constitute a group of patients who need specific attention due to their individual age related pathophysiological processes. 21% of the german population we...
In this study, calcium phosphate nanoparticles with two phases, fluorapatite (FA; Ca(10)(PO(4))(6)F(2)) and hydroxyapatite (HA; Ca(10)(PO(4))(6)(OH)(2)), were prepared using the solgel method. Ethyl phosphate, hydrated calcium nitrate, and ammonium fluoride were used, respectively, as P, Ca, and F precursors with a Ca:P ratio of 1:72. Powders obtained from the sol-gel process were studied after...
embedding health technology assessment (hta) in a fair process has great potential to capture societal values relevant to public reimbursement decisions on health technologies. however, the development of such processes for priority setting has largely been theoretical. in this paper, we provide further practical lead ways on how these processes can be implemented. we first present the misconce...
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