نتایج جستجو برای: ray microscopy
تعداد نتایج: 469867 فیلتر نتایج به سال:
شکل و اندازه ذرات در این نانوکامپوزیت جدید توسط میکروسکوپ الکترونی روبشی انتشار زمینه (field emission scanning eectron microscopy)، دستگاه پراش سنج پرتو ایکس (x-ray diffraction)، و طیف سنجی تبدیل فوریه مادون قرمز (fourier transform infrared spectroscopy) مورد مطالعه قرار گرفت. بر اساس تجزیه وتحلیل پراش پرتو ایکس، میانگین اندازه ذرات در محدوده nm 42-32 بدست آمد. تصاویر میکروسکوپ الکترونی روبشی ا...
objective(s): cao–mgo–sio2 system bioceramics possess good characteristics for hard tissue engineering applications. the aim of the study was to synthesize the nano powder by using a sol-gel method and evaluate of bioactivity in the cells culture. methods: to characterize of powder x-ray diffraction (xrd), transmission electron microscopy (tem) and to evaluate the bioactivity sample cell seedin...
the study describes the synthesis and characterization of zinc(ii) minoxidil nanocomposite (1). the reaction between zinc(ii) acetate, minoxidil, {c9h15n5o=minoxidil=(2,4-diamino-6-piperidine-1-yl) pyrimidine n-oxide)} as a ligand and ki as bridging agent, in methanol at 60°c leads to the formation of nano-sized zn(ii) minoxidil nanocomposite, 1. characterization of (1) was carried out by eleme...
in this study, tio2 and zno nanofilms were prepared by sol-gel spin-coating method. nanofilms were characterized by x-ray diffraction (xrd), energy dispersive analysis of x-ray (edx), scanning electron microscopy (sem) and field emission scanning electron microscopy (fe-esm). structural and morphological properties of nanofilms were investigated. the average crystalline size of tio2 and zn...
sio2-coated cobalt ferrite (cofe2o4) nanoparticles were obtained by the hydrolysis of tetraethylorthosilicate in the presence of cofe2o4 nanoparticles in co-precipitation. the effects of sio2coating on the magnetic properties of cofe2o4 nanoparticles were investigated. the structural, morphological and magnetic properties of as-prepared sample were characterization by x-ray diffraction (xrd), f...
Over the last decade, synchrotron-radiation based X-ray Tomographic Microscopy (SRXTM) has established itself as a fundamental tool for non-invasive, quantitative investigations of a broad variety of samples, with application ranging from space research and materials science to biology and medicine. The beamline for TOmographic Microscopy and Coherent rAdiology experimenTs (TOMCAT) has been rec...
< p>Mg-Fe bi-metal oxide was prepared and utilized as a magnetized renewable solid base catalyst for formation of 2-aminothiophenes by means of Gewald’s reaction. The prepared heterogeneous basic solid catalyst can be separated by a magnet and reused without considerable wastage in this activity. The structure of the aforementioned magnetized basic nano-catalyst was studied by XRD (X-ray diffra...
nanotechnology is a general term which is related with field of all advanced science term that generally predicates with all modern technologies which consider nanoscales. improvement in the quality of products by adding some nanoparticles and study of their behavior in the presence of these nanoparticles have been obtained in many researches. on the other hand numerous demands for sowing ...
Progress in lithography and nanofabrication @E. Di Fabrizio et al., Nature ~London! 401, 895 ~1999!# has made it possible to apply differential interference contrast ~DIC! in x-ray microscopy using an original x-ray doublet lens based on two specially developed zone plates. Switching from bright-field imaging ~absorption contrast! to x-ray DIC, we observe, similar to visible-light microscopy, a...
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