Crystals Growth
Mostrando 13-24 de 196 artigos, teses e dissertações.
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13. Growth of Large Size Lithium Niobate Single Crystals of High Quality by Tilting-mirror-type Floating Zone Method
Large size high quality LiNbO3 single crystals were grown successfully by tilting-mirror-type floating zone (TMFZ) technique. The grown crystals were characterized by X-ray diffraction, etch pits density measurement, Impedance analysis, Vibrating sample magnetometry (VSM) and UV-Visible spectrometry. The effect of mirror tilting during growth on the structur
Mat. Res.. Publicado em: 28/03/2016
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14. In vitro studies reveal antiurolithic effect of Terminalia arjuna using quantitative morphological information from computerized microscopy
ABSTRACT Purpose: For most cases, urolithiasis is a condition where excessive oxalate is present in the urine. Many reports have documented free radical generation followed by hyperoxaluria as a consequence of which calcium oxalate (CaOx) deposition occurs in the kidney tissue. The present study is aimed to exam the antilithiatic potency of the aqueous extr
Int. braz j urol.. Publicado em: 2015-10
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15. Analysis on the Growth and Characterization of a Non-linear Optical Single Crystal: L-Cystine Dihydrobromide
Nonlinear optical single crystals of L-cystine dihydrobromide (LCHB) have been grown by slow evaporation method. Single crystal X-ray diffraction analysis revealed the crystal system and lattice parameter values. Powder X-ray diffraction analyses have been carried out and the diffraction patterns have been indexed. Fourier transform infrared (FTIR) analysis
Mat. Res.. Publicado em: 2015-08
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16. On the Formation of Hydroxyapatite Nano Crystals Prepared Using Cationic Surfactant
Being a major constituent of hard tissues found in humans, synthetic hydroxyapatite (HA) as a substitute to natural bone and teeth is gaining importance. In particular, nano hydroxyapatite is expected to impart considerably superior properties. The current research focuses on identification of mechanism of the formation of HA nano-crystals during its prepara
Mat. Res.. Publicado em: 2015-06
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17. Investigation on Physical Properties of Semiorganic Nonlinear Optical Glycine Zinc Sulfate Single Crystal
Nonlinear optical single crystals of Glycine Zinc Sulfate (GZS) were grown by slow evaporation technique. Single crystal X-ray diffraction analysis revealed the crystal system and lattice parameter values. Powder X-ray diffraction analyses have been carried out and the diffraction patterns have been indexed. The optical properties of the crystals were determ
Mat. Res.. Publicado em: 2015-06
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18. Antilithiatic Activity of phlorotannin rich extract of
Sarghassum Wightii on Calcium Oxalate Urolithiais –In Vitro andIn Vivo EvaluationABSTRACT Purpose: Urolithiasis is a common urological disorder responsible for serious human affliction and cost to the society with a high recurrence rate. The aim of the present study was to systematically evaluate the phlorotannin rich extract of
Sargassum wightii using suitable in vitro and in vivo modInt. braz j urol.. Publicado em: 2015-06
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19. Enamel crystals of mice susceptible or resistant to dental fluorosis: an AFM study
Objective: This study aimed to assess the overall apatite crystals profile in the enamel matrix of mice susceptible (A/J strain) or resistant (129P3/J strain) to dental fluorosis through analyses by atomic force microscopy (AFM). Material and Methods: Samples from the enamel matrix in the early stages of secretion and maturation were obtained from the inc
J. Appl. Oral Sci.. Publicado em: 2014-06
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20. Proposed model for biomineralization of novel nanohydroxyapatite/vertically aligned multiwalled carbon nanotube scaffolds
For the first time, the growth mechanism of biominerals formed on plate-like nanohydroxyapatite (nHAp) electrodeposited on superhydrophilic vertically aligned multi-walled carbon nanotubes (VAMWCNT-O2) is presented and a model for the specific growth preference is discussed. VAMWCNT-O2 films were obtained by microwave-assisted chemical vapor deposition metho
Mat. Res.. Publicado em: 08/03/2013
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21. Crystallization of II-VI semiconductor compounds forming long microcrystalline linear assemblies
In this work we report the formation of long microcrystalline linear self-assemblies observed during the thin film growth of several II-VI compounds. Polycrystalline CdTe, CdS, CdCO3, and nanocrystalline CdTe:Al thin films were prepared on glass substrates by different deposition techniques. In order to observe these crystalline formations in the polycrystal
Mat. Res.. Publicado em: 01/02/2013
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22. Fabricação e caracterização de dispositivos baseados em nanofitas de Óxido de Estanho (SnO2)
The structural and transport features of tin oxide nanobelts synthesized by the vapor-solid method combined with the carbothermal reduction process were investigated in this work. The samples synthesized were characterized by using experimental techniques such as scanning and transmission electron microscopy and x-ray diffraction. The nanobelts were found to
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/08/2012
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23. Crescimento e propriedades vibracionais de cristais a base de Ãxidos / Growth and Vibrational Properties of Oxide Crystals
In this work we used different experimental techniques to study four different series of inorganic oxide crystals, namely: (i) congruent lithium isotope niobate (C7LN), (ii) rare-earth doped mixed vanadates ((Nd,Yb):YxGd1-x(VO4)); (iii) alkali metal doped and pure calcium barium niobates (CaxBa1-xNb2O6); and (iv) potassium tantalite niobate (KTa1-xNbxO3). Be
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/03/2012
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24. GROWTH AND CHARACTERIZATION OF OPTICAL CRYSTALS AND PURE L-ASPARAGINE L-ASPARAGINE RADIATED. / CRESCIMENTO E CARACTERIZAÇÃO ÓPTICA DE CRISTAIS DE L-ASPARAGINA PURA E L-ASPARAGINA IRRADIADA.
Neste trabalho apresentamos os resultados do crescimento de cristais de L-Asparagina●H2O e do estudo de suas propriedades ópticas, lineares e não lineares, do cristal como é crescido e após ser submetido a altas doses de raios-X. Os cristais foram crescidos em solução aquosa pelo método de evaporação lenta do solvente. Foram realizadas medidas
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/02/2012