ray diffraction
X ray diffraction (XRD)
... this process. We analyzed the kinetics of thermal transformation of Al-maghemites into Al-hematites and some of its mineralogical aspects. Synthetic substituted maghemites with different degrees of Al-substitution (0.0, ...
13
Evaluation of stress-strain behavior of surface treated steels by X-ray diffraction
... 4 Figure 2 left presents a characteristic optical micrograph of the cross-section of the nitrided specimens. DIN 32 Cr Mo V 13 nitrided steel presents a white layer with a thickness of 18 μm, and a diffusion zone with ...
5
Synthesis of hydroxyapatite and structural refinement by x-ray diffraction.
... SYNTHESIS OF HYDROXYAPATITE AND STRUCTURAL REFINEMENT BY X-RAY DIFFRACTION. A sample of hydroxyapatite was synthesized and its crystalline structure was analyzed by X-ray diffraction by means ...
7
X-ray diffraction pattern and relative crystallinity of irradiated arrowroot starch
... After cereals, tubers and roots are the major source of starch for food and industrial uses. Arrowroot refers to any plant of the genus Marantha, but the term is most commonly used to describe the easily digested starch ...
7
X ray diffraction analysis of IrO2/TiO2/CeO2 ceramic oxide films.
... A excelente estabilidade (maior TVU) apresentada pelo ele- trodo de composição binária inicial Ti/Ir0,3Ti0,7O2 é provavel- mente devido à formação da fase rutilo (solução sólida) entre o[r] ...
6
Crystallization and preliminary X-ray diffraction analysis of a glutathione S-transferase from Xylella fastidiosa
... Glutathione S-transferases (GSTs) form a group of multifunctional isoenzymes that catalyze the glutathione-dependent conjugation and reduction reactions involved in the cellular detoxification of xenobiotic and ...
3
Mat. Res. vol.10 número4
... X ray diffraction, electron back scatter diffraction (EBSD), magnetic methods and atomic force microscope (AFM) in samples of a low SFE austenitic stainless steel, AISI 301LN and compared with a ...
8
Int. braz j urol. vol.33 número1
... X-ray diffraction, stereomicroscopy and scanning electronic microscopy, that precocious treatment with Phyllanthus niruri significantly reduced the number and the weight of calculi compared to the untreated ...
4
Mat. Res. vol.8 número2
... X-ray diffraction patterns of the calcined powders are shown in Figure 2. The presence of a distorted tetragonal spinel phase along with other crystalline phases, such as CuO and Cr 2 O 4 , could be ...
4
J. Braz. Chem. Soc. vol.15 número5
... Potassium hydrotris(2-mercaptothiazolyl)borate, KMt, (1) and potassium hydrotris(2- methimazole), KTm, (2), were prepared by reacting the appropriate amine thiol with KBH 4 . They were characterized by spectroscopic ...
6
Matéria (Rio J.) vol.12 número3
... Oxidation at high temperatures promotes the development of a crystalline oxide film. Increasing temperature induces the formation of a thicker oxide layer, which is accompanied with dissolution of oxygen beneath it [13]. ...
7
Thermal Analysis: A Complementary Method to Study the Shurijeh Clay Minerals
... Although, some previous studies on the thermal behavior of clay minerals have been carried out, but comparatively little attention has been given to the study of clay minerals in the clastic reservoir rocks with complex ...
13
Braz. J. Phys. vol.34 número3B
... stable and irreversibly transforms to an orthorhombic structure above 460 o C. The structure of the latter was determined from studies on monocrystalline samples, whereas for the monoclinic variant there are no single ...
3
J. Braz. Chem. Soc. vol.13 número5
... 15 mL of DME, at -30 ºC and the resulting mixture was stirred for 20 h. The LiBr formed during the reaction was filtered off and the solvent evaporated under vacuum. The residue was purified by column chromatography ...
4
J. Braz. Chem. Soc. vol.26 número10
... X-ray diffraction (XRD), thermogravimetric analysis (TG/DTA), scanning electron microscope (SEM), elemental analysis CHN, Raman, potentiometric titration, saturation magnetization and Brunauer-Emmett-Teller ...
7
Characterization and DC Conductivity of Novel CuO doped Polyvinyl Alcohol (PVA) Nano-composite Films
... X-ray diffraction (XRD) patterns of the pure PVA film, nano CuO powder and the polymer nano- composite films were recorded at room temperature using an X-ray powder diffractometer with Cu Kα ...
9
Braz. J. Phys. vol.39 número4
... The typical X-ray diffraction patterns for a pure Y- 123 (GA) and for Ag-doped Y-123 powders (GB, GC and GD) prior to sintering are shown in Fig. 2. The X-ray pat- terns revealed that all powders ...
7
Crystallization, preliminary X-ray analysis and Patterson search of a new aspartic protease isolated from human urine
... A new aspartic protease isolated from human urine has been crystallized and X-ray diffraction data collected to 2.45A resolution using a synchrotron radiation sourc[r] ...
9
Determination of the oxygen and nitrogen interstitial diffusion coeficient in niobium by mechanical spectroscopy
... The polycrystalline sample of Nb was obtained by electron-beam zone melting and was supplied in the form of swaged rod of 3 mm in diameter, by FAENQUIL/Lorena. Samples 50 mm long which had been chemically polished to 1 ...
4
Luminescence Properties of Ce3 +-Doped Terbium Aluminum Garnet Phosphor Prepared with Use of Nanostructured Reagents
... Aluminum oxide nanoparticles were obtained by gaseous-disperse synthesis and characterized by X-ray diffraction, differential thermal analysis and scan- ning electron microscopy..[r] ...
4