نتایج جستجو برای: calcinated
تعداد نتایج: 174 فیلتر نتایج به سال:
In this research, NTC thermistors with composition of NiMn2-xCoxO4 (x = 0.4, 0.8, 1.2, 1.6) prepared by two methods: solid state reaction and sol-gel (gel-combustion). The average particle size was monitored and structure of the calcinated powders have been investigated using x-ray diffraction (XRD) and tunneling electron microscopy (TEM) techniques. The average particle size was estimated to b...
tribution of repetitive DNA sequences in eubacteria and application to fi ngerprint-ing of bacterial genomes. 6. European Food Safety Authority. Guidance on safety assessment of botanicals and botanical preparations intended for use as ingredients in food supplements.plication of high hydrostatic pressure to eliminate Escherichia coli O157:H7 on alfalfa sprouted seeds. chlorine and calcinated c...
In this paper, MgAl2O4 nanoparticles were synthesized by the Sol-gel auto combustion method and were doped with different concentrations of Ni2+ (x= 0, 0.1, 0.05, and 0.03). By this method, a novel photocatalyst which had better decolorization percentages of Congo redcompared to MgAl2O4 was produced. The MgAl2O4 sample...
Presently, the search for urgent solutions to mitigate climate change has become a global priority. One of most important challenges is characterization, standardization, and technology sustainable natural raw materials, which will significantly improve quality common types cement, production process emits large amounts greenhouse gases into atmosphere. This work focused on study kaolinitic cla...
Introduction: One of the factors that affects the rate of adsorption and removal of pollutants is the level of bed surface. Today, the use of active carbon substrates, synthetic zeolite such as Y and ZSM-5, are of great efficiency due to their high surface. In this research, diatomite modification was carried out using chemical and thermal processes to increase the bed surface and also the amou...
Belimbing (Averrhoa carambola L.) merupakan salah satu buah tropis yang mempunyai umur simpan pendek yaitu sekitar 2-3 hari. Masalah terjadi pada belimbing saat distribusi adalah karena faktor benturan dan penyakit dapat merusak belimbing. Tujuan dari penelitian ini untuk mendapatkan konsentrasi penambahan pektin nanopartikel ZnO (NP-ZnO) terbaik dalam pembuatan bionanokomposit mempertahankan k...
TiO2 nanomaterials with controlled morphologies have attracted extensive interest because of potential applications in solar energy conversion, environmental cleanup and hydrogen generation. Nanoscale titanium dioxides have been produced as nanotubes, nanosheets, nanowires and mesoporous microspheres by a variety of approaches. Among the various nanomaterials, mesoporous microspheres have drawn...
Reeds biomass has been successfully extracted. It calcinated with annealing temperatures at 800 °C (A800), 850 (A850), and 900 (A900). The x-ray pattern showed that it a cristoballite (SiO2) crystal structure. band gap energy values are 3.8 eV, 3.7 eV 4.7 respectively. FTIR spectra show the groups silanol, siloxane, monohydride. Quantitatively, provide results to determine optical properties di...
Pt/TiO2-xNy film has been synthesized successfully through the sol-gel method and spin coating method. The roughness and absorption wavelength were analyzed by atomic force microscopy (AFM) and ultraviolet and visible spectrophotometer(UV-vis). X-ray photoelectron spectroscopy(XPS) showed that the elements contain Pt, N, Ti and O. Moreover, the photocatalytic degradation of methylene blue demon...
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