Crystals Growth
Mostrando 25-36 de 196 artigos, teses e dissertações.
-
25. Microstructure and metal-insulator transition in single crystalline KMo4O6
High quality KMo4O6 single crystals with tetragonal structure (space group P4/mbm) have been prepared by fused salt electrolysis. The crystals were studied by scanning electron microscopy (SEM), X-ray diffractometry, electrical resistivity, and magnetization measurements. X-ray powder diffraction patterns and SEM have given some information on the growth of
Mat. Res.. Publicado em: 11/10/2012
-
26. Evaluation and biochemical characterization of a distinctive pyoverdin from a pseudomonas isolated from chickpea rhizosphere
Microbial siderophores confiscate the available ferric ions around the roots and trigger a reaction resulting in plant growth promotion. In our study, a high level of siderophore production was observed from a newly isolated Pseudomonas sp. from the rhizosphere of Chickpea plants. Under an iron depleted condition in Standard Succinic acid medium a 1000 µgmL
Brazilian Journal of Microbiology. Publicado em: 2012-06
-
27. Cytoprotective role of the aqueous extract of Terminalia chebula on renal epithelial cells
PURPOSE: Kidney stone is one of the most prevalent diseases worldwide. Calcium oxalate (CaOx) has been shown to be the main component of the majority of stones formed in the urinary system of the patients with urolithiasis. The present study evaluates the antilithiatic properties of Terminalia chebula commonly called as "harad" which is often used in ayurved
International braz j urol. Publicado em: 2012-04
-
28. Desenvolvimento do cristal semicondutor de iodeto de mercúrio para aplicação como detector de radiação / Development of the mercury iodide semiconductor crystal for application as a radiation detector
In this work, the establishment of a technique for HgI growth and preparation of crystals, for use as room temperature radiation semiconductor detectors is described. Three methods of crystal growth were studied while developing this work: (1) Physical Vapor Transport (PVT); (2) Saturated Solution of HgI2, using two different solvents; (a) dimethyl sulfoxide
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/07/2011
-
29. Effects of silica addition on the chemical, mechanical and biological properties of a new α-Tricalcium Phosphate/Tricalcium Silicate Cement
The addition of tricalcium silicate (C3S) to apatite cements results in an increase of bioactivity and improvement in the mechanical properties. However, adding large amounts raises the local pH at early stages, which retards the precipitation of hydroxyapatite and produces a loss of mechanical strength. The introduction of Pozzolanic materials in cement pas
Materials Research. Publicado em: 28/10/2011
-
30. Crescimento de cristais de Bi2TeO5 / Crystal growth Bi2TeO5
Cristais de Bi2TeO5 (telurato de bismuto) são materiais fotorrefrativos adequados para gravação holográfica permanente. São capazes de reter um holograma por longo tempo, vários anos se no escuro, sem necessidade de tratamentos posteriores para fixação. Apenas poucos grupos no mundo obtiveram monocristais deste material, apesar de suas propriedades i
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/07/2010
-
31. Noncrystalline uric acid inhibits proteoglycan and glycosaminoglycan synthesis in distal tubular epithelial cells (MDCK)
Hyperuricemia is associated with renal stones, not only consisting of uric acid (UrAc) but also of calcium oxalate (CaOx). Glycosaminoglycans (GAGs) are well-known inhibitors of growth and aggregation of CaOx crystals. We analyzed the effect of noncrystalline UrAc on GAG synthesis in tubular distal cells. MDCK (Madin-Darby canine kidney) cells were exposed t
Brazilian Journal of Medical and Biological Research. Publicado em: 2010-10
-
32. Diminution of oxalate induced renal tubular epithelial cell injury and inhibition of calcium oxalate crystallization in vitro by aqueous extract of Tribulus terrestris
PURPOSE: Recurrence and persistent side effects of present day treatment for urolithiasis restrict their use, so an alternate solution, using phytotherapy is being sought. The present study attempted to evaluate the antilithiatic properties of Tribulus terrestris commonly called as “gokhru” which is often used in ayurveda to treat various urinary disease
International braz j urol. Publicado em: 2010-08
-
33. Crescimento de cristais de rubi e safira pelo método do fluxo
This work reports the growth of corundum crystals by the flux method. The main objective was the evaluation of versatility, effectiveness and real possibilities of the flux method to the synthesis and doping of monocrystals with impurities of particular interest. In this work the chosen impurities were i) Cr and ii) Fe and Ti, aiming the synthesis of rubies
Química Nova. Publicado em: 2010
-
34. Study of diamond film interface structure and contacting area
High purity diamond film has been grown by refined Combustion Flame method with high oxygen proportion. Snapshots of time series of the diamond film forming were taken and a model was derived. By observing the period of seeding to coalescing of diamond crystals to form film, it is realized that the contacting area is small and the calculated value was less t
Materials Research. Publicado em: 2009-03
-
35. Hydrothermal synthesis of well-crystallised boehmite crystals of various shapes
Aluminium monohydroxide, also known as aluminium oxyhydroxide (boehmite - AlO[OH]), is water insoluble but crystallises into microcrystals of various shapes. When, by X-ray diffraction, the microcrystals present a basal reflexion (d[020]) of 0.611 nm, the crystalline structure is referred to as "well-crystallised" boehmite. Natural and synthetic crystals of
Materials Research. Publicado em: 2009
-
36. Cristalização de insulina suina com dioxido de carbono como agente acidificante / Crystallization of porcine insulin with carbon dioxide as acidifying agent
Crystallization is a separation and purification technique used in the production of chemical, pharmaceutical and food products. The majority of the solid products is obtained by crystallization/precipitation processes that probably are the second most important separation technology in terms of capacity, behind only distillation processes. Studies on the us
Publicado em: 2009