80 research outputs found
Probing Local and Global Ferroelectric Phase Stability and Polarization Switching in Ordered Macroporous PZT
Eu-Doped BaTiO3 Powder and Film from Sol-Gel Process with Polyvinylpyrrolidone Additive
Transparent BaTiO3:Eu3+ films were prepared via a sol-gel method and dip-coating technique, using barium acetate, titanium butoxide, and polyvinylpyrrolidone (PVP) as modifier viscosity. BaTiO3:Eu3+ films ~500 nm thick, crystallized after thermal treatment at 700 ÂşC. The powders revealed spherical and rod shape morphology. The optical quality of films showed a predominant band at 615 nm under 250 nm excitation. A preliminary luminescent test provided the properties of the Eu3+ doped BaTiO3
Inferior Vena Cava Index in Edematous Patients
Introduction: To find a relation between extracellular over fluid and inferior vena cava index as a noninvasive, cost effective and accessible method .Methods: In a cross sectional study 54 cases (no edema 30, mild and moderate 13 and significant edema 11 cases) entered to study. Inferior vena cava index (IVCi) measured by difference of inspiration to expiration divided to maximum size multiply by 100, we also find delta ratio as difference of maximum to minimum size of inferior vena cava. All data expressed by rate and ratio, relation of edema severity to IVCi or delta ratio performed by mann whitney and regression test, P less than 0.05 was significant.Results: IVCi in 30 cases with no edema ,13 cases with mild to moderate and 11 cases with significant edema were %46±16 , %42±16 , %38±17, there is a reverse relation of IVCi and edema severity but these relations were not significant (P>0.05 ).Averaged Delta ratio(millimeter) decreased in severe edema but it was not significant(3.7mm±2 vs. 2.8mm±1.6). Conclusion: In edematous conditions IVCi and delta ratio decrease but these changes are not significant for edema severity estimation
Hydrothermal Synthesis of Tetragonal Barium Titanate from Barium Hydroxide and Titanium Dioxide under Moderate Conditions
Hydrothermal Synthesis of Tetragonal Barium Titanate from Barium Chloride and Titanium Tetrachloride under Moderate Conditions
Tetragonal Nanocrystalline Barium Titanate Powder: Preparation, Characterization, and Dielectric Properties
Effect of Spark Plasma Sintering on the Dielectric Behavior of Barium Titanate Nanoparticles
Capillary electrochromatography with a neutral monolithic column for classification of analytes and determination of basic drugs in human serum
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