نتایج جستجو برای: barium carbonate

تعداد نتایج: 33289  

Journal: :Chinese Physics 2022

As a new energy conversion device that can convert mechanical into electrical energy, triboelectric nanogenerator has attracted extensive attention since its invention. However, environmental performance is limited because the raw materials are mostly synthetic polymer materials. Using green and environmentally friendly cellulose to prepare nanogenerators one of important ways solve above probl...

غلامحسین فلاحی, , فریبرز زندیه, , مهرزاد مهدیزاده, ,

One of the common problems in children and specially in infants is gasteroesophageal reflux (G.E.R). Present study was performed to compare diagnostic value of lower esophageal sonography with barium swallow. This study was conducted on 50 patients 1 month to 15 years age in center of pediatric clinic of Tehran, during the years 1999-2000. Patients suspected to have G.E.R studied with lower eso...

Journal: :international journal of nano dimension 0
s. abedini khorrami department of chemistry, azad university, north tehran branch, tehran, iran. r. islampour department of chemistry, azad university, north tehran branch, tehran, iran. h. bakhtiari department of chemistry, azad university, north tehran branch, tehran, iran. q. sadr manuchehri naeini department of chemistry, azad university, north tehran branch, tehran, iran.

nanocrystalline particles of barium hexaferrite has been prepared by the sol–gel auto- combustion method using iron and barium nitrate with a ba:fe molar ratio of 1:10. the effect of fuel such as citric acid and aspartic acid was investigated on the structure and magnetic properties of nanoparticles. the results revealed that the formation of barium hexaferritefine particles is influenced by mo...

Journal: :Crystal Growth & Design 2021

Shape-preserving conversion offers a promising strategy to transform self-assembled structures into advanced functional components with customizable composition and shape. Specifically, the assembly of barium carbonate nanocrystals amorphous silica nanocomposites (BaCO3/SiO2) plethora programmable three-dimensional (3D) microscopic geometries, can subsequently be converted chemical compositions...

Journal: :Crystal Growth & Design 2021

Metastable carbonates play important roles in geochemistry, biomineralization and serve as model systems for nonclassical theories of nucleation growth. Balcite (Ca0.5Ba0.5CO3) is a remarkable carbonate phase that isostructural with high-temperature modification calcite (CaCO3), yet can be synthesized at ambient conditions. Here, we investigate crystallization pathways the Ba–Ca–CO3–H2O system,...

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