نتایج جستجو برای: fesem
تعداد نتایج: 2149 فیلتر نتایج به سال:
fabrication and characterization of visible light active fe-tio2 nanocomposites as nanophotocatalyst
in this research fe-tio2 nanocomposites with different molar ratios of fe/ti were prepared as nano-photocatalyst using a modified sol-gel process at ambient temperature. crystallographic properties of nanocomposites were characterized by x-ray diffraction (xrd). surface morphology and mean particle size of nanocomposites were specified by field emission scanning electron microscopy (fesem) and ...
Bacterial cellulose has been used in the food industry for applications such as low-calorie desserts, salads, and fabricated foods. It has also been used in the paper manufacturing industry to enhance paper strength, the electronics industry in acoustic diaphragms for audio speakers, the pharmaceutical industry as filtration membranes, and in the medical field as wound dressing and artificial s...
Bone transplants are used to treat fractures and increase new tissue development in bone tissue engineering. Grafting of massive implantations showing slow curing rate and results in cell death for poor vascularization. The potentials of biocomposite scaffolds to mimic extracellular matrix (ECM) and including new biomaterials could produce a better substitute for new bone tissue formation. A pu...
Two important criteria of an ideal biomaterial in the field of stem cells research are to regulate the cell proliferation without the loss of its pluripotency and to direct the differentiation into a specific cell lineage when desired. The present study describes the influence of TiO2 nanofibrous surface structures on the regulation of proliferation and stemness preservation of adipose-derived ...
BACKGROUND Hericium erinaceus has been reported to have a wide range of medicinal properties such as stimulation of neurite outgrowth, promotion of functional recovery of axonotmetic peroneal nerve injury, antioxidant, antihypertensive, and antidiabetic properties. In recent years, the green synthesis of gold nanoparticles (AuNPs) has attracted intense interest due to the potential use in biome...
in this study, a manganite sample with a nominal formula of la0.9sr0.1mno3 was prepared by the microwave assisted sol-gel method and annealing at various temperatures. the structural and magnetic properties of the samples were investigated by xrd, fesem and ac susceptometer, respectively. xrd analysis showed that the samples are a nearly single phase. fesem micrographs showed that by increasing...
نانوکاتالیست cuo/zno/al2o3 به وسیله ی روش سنتز احتراقی اوره- نیترات با دو نسبت متفاوت اوره به نیترات 1 و 2 تهیه شدند. نانوکاتالیست های سنتزی در فرایند تبدیل متانول در حضور بخار آب برای تولید هیدروژن مورد ارزیابی قرار گرفتند. ویژگی فیزیکی و شیمیایی نمونه های سنتزی با استفاده از روش های xrd ،fesem ،bet و ftir بررسی شدند. نتیجه های به دست آمده از edx و fesem وجود ذرات پراکنده تر و ریزتر در سطح نمو...
Thin films of CuGa2O4 were deposited using an RF magnetron-sputtering technique for the first time. The sputtered thin post-deposition annealed at temperatures varying from 100 to 900 °C in a constant O2 ambience 1.5 h. Structural and morphological studies performed on X-ray diffraction analysis (XRD) Field Emission Scanning Electron Microscope (FESEM). presence phases along with CuO was confir...
Methyl 3,4,5-trihydroxybenzoate (methyl gallate) was synthesized from 3,4,5-trihydroxybenzoic acid (gallic acid) by reaction with methanol in presence of sulphuric acid. gallate then reacted hydrazine monohydrate to give 3,4,5-trihydroxybenzohydrazide (galloyl hydrazide). The structure methyl and galloyl hydrazide characterized Fourier transforms infrared (FTIR) spectroscopy, mass spectrometry ...
Tingkah laku kakisan keluli karbon API 5L X65 dengan kehadiran bakteria penurun sulfat (SRB) dalam persekitaran CO2 adalah dikaji. Uji kaji yang dijalankan bagi meneliti tingkah ujian kehilangan berat dan analisis permukaan. Spesimen didedahkan kepada medium kawalan (tanpa konsortium bakteria) SRB selama 10 hari aliran gas berterusan. Biofilem, produk kedalaman lubang terhasil dicirikan mikrosk...
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