Dynamical X-ray diffraction imaging of voids in dislocation-free high-purity germanium single crystals.

White-beam X-ray topography has been performed to provide direct evidence of micro-voids in dislocation-free high-purity germanium single crystals. The voids are visible because of a dynamical diffraction contrast. It is shown that voids occur only in dislocation-free parts of the crystal and do not show up in regions with homogeneous and moderate dislocation density.

Obtaining titanium dioxide nanoparticles with spherical shape and antimicrobial properties using M. citrifolia leaves extract by hydrothermal method.

In this work, we synthesized titanium dioxide (TiO) nanoparticles using leaf extract of Morinda citrifolia (M. citrifolia) by the advanced hydrothermal method. The synthesized TiO nanoparticles were characterized by X-ray diffraction (XRD), Fourier transmission infrared (FT-IR), Ultraviolet-visible diffuse reflectance (UV-Vis DRS), Ultraviolet-visible spectroscopy (UV-Vis), Raman spectroscopy, and scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM with EDX) techniques.

A novel nine base deletion mutation in -cytochrome b5 reductase gene in an Indian family with recessive congenital methemoglobinemia-type-II.

Recessive hereditary methemoglobinemia (RCM) associated with severe neurological abnormalities is a very rare disorder caused by NADH- cytochrome b5 reductase (cb5r) deficiency (Type II). We report a case of 11 month old male child who had severe mental retardation, microcephaly and gross global developmental delay with methemoglobin level of 61.1%.

Metal (II) Complexes Derived from Naphthofuran-2-carbohydrazide and Diacetylmonoxime Schiff Base: Synthesis, Spectroscopic, Electrochemical, and Biological Investigation.

A new Schiff base and a new series of Co(II), Ni(II), Cu(II), Cd(II), and Hg(II) complexes were synthesized by the condensation of naphthofuran-2-carbohydrazide and diacetylmonoxime. Metal complexes of the Schiff base were prepared from their chloride salts of Co(II), Ni(II), Cu(II), Cd(II), and Hg(II) in ethanol. The ligand along with its metal complexes have been characterized on the basis of analytical data, IR, electronic, mass, (1)HNMR, ESR spectral data, thermal studies, magnetic susceptibility, and molar conductance measurements.

Synthesis, spectroscopic characterization and biological evaluation studies of Schiff's base derived from naphthofuran-2-carbohydrazide with 8-formyl-7-hydroxy-4-methyl coumarin and its metal complexes.

Metal complexes of the type ML(2), where M=Co(II), Ni(II), Cu(II), Zn(II), Cd(II), Hg(II) and L=Schiff's base derived from the condensation of naphthofuran-2-carbohydrazide with 8-formyl-7-hydroxy-4-methyl coumarin have been synthesized. The chelation of the complexes have been elucidated in the light of analytical, IR, UV-vis, (1)H NMR, mass, ESR spectral data, thermal and magnetic studies. The measured molar conductance values indicate that, the complexes are non-electrolytic in nature.

Eucalyptus microsatellites mined in silico: survey and evaluation.

Eucalyptus is an important short rotation pulpy woody plant, grown widely in the tropics. Recently, many genomic programmes are underway leading to the accumulation of voluminous genomic and expressed sequence tag sequences in public databases. These sequences can be utilized for analysis of simple sequence repeats (SSRs) and single nucleotide polymorphism (SNPs) available in the transcribed genes.

Influence of size parameter and refractive index of the scatterer on polarization-gated optical imaging through turbid media.

The influence of incident polarized light, refractive index, and size parameter of the scatterer on achievable resolution and contrast (image quality) of polarization-gated transillumination imaging in turbid media is reported here. Differential polarization detection led to significant improvement of image quality of an object embedded in a medium of small-sized scatterers (diameter D< View Article and Find Full Text PDF

Accurate and efficient method for predicting thermochemistry of furans and ortho-arynes: expansion of the bond-centered group additivity method.

The bond-centered group additivity method (BCGA) method for the estimation of the thermochemical properties of polycyclic aromatic molecules is expanded to aromatic molecules containing furan ring(s) and ortho-arynes. The method is based on enthalpies of formation (deltaH(o)f), entropies (S(o)298), and heat capacities (C(o)p) obtained from B3LYP/6-31G(d) calculations. The enthalpies of formation were obtained using a set of homodesmic reactions that include only aromatic molecules as the reference.

Genetic analyses of casuarinas using ISSR and FISSR markers.

Inter simple sequence repeat polymerase chain reaction (ISSR-PCR) was used for the genetic analysis of the six species of Allocasuarina, five species of Casuarina and 12 superior performing selections of C. equisetifolia L. We also fingerprinted C.

Accurate and efficient method for predicting thermochemistry of polycyclic aromatic hydrocarbons - bond-centered group additivity.

A self-consistent estimation method for the thermochemical properties of polycyclic aromatic hydrocarbons (PAH) is presented. This method is based on enthalpies of formation (DeltaHf(degrees), entropies (S(degrees)298, and heat capacities (C(degrees)p obtained from B3LYP/6-31G(d) calculations of the total energies and frequencies for 139 PAHs, including C(60) and C(70) fullerenes. The enthalpies of formation were calculated using an optimized set of homodesmic reactions given the available experimental DeltaHf(degrees) of PAHs.

Ethane dimethylsulphonate selectively destroys Leydig cells in the adult bonnet monkeys (Macaca radiata).

Aim: To study the effect of intratesticular administration of ethane-1,2-dimethylsulphonate (EDS) which has been extensively used to selectively destroy Leydig cells in rats and study the role of gonadotropin in regulation of differentiation of Leydig cells (LC) in the adult male bonnet monkey.

Methods And Results: In vitro studies with cultured interstitial cells isolated from monkey testis revealed an inhibitory effect of EDS on LC as assessed by decrease in testosterone production. Intratesticular administration of EDS (5, 10, 20, 50 mg/testis) resulted in a dose-dependent rapid decrease in serum testosterone levels, with a 65% decrease with 5 mg of EDS by the 3rd day, which returned to control levels by the 45th day.

Relationship between glutathione and DL alpha-lipoic acid against cadmium-induced hepatotoxicity.

Cadmium, a divalent metal toxicant, preferentially localizes in hepatocytes and causes liver injury. DL alpha-lipoic acid is a dithiol which is effective in rendering protection against cadmium-associated liver damage, by virtue of its two sulfhydryl moieties. Lipoate was administered to cadmium-exposed rats which were either prior administered with buthionine sulfoximine to deplete liver glutathione or not.

Effect of DL alpha-lipoic acid on tissue lipid peroxidation and antioxidant systems in normal and glycollate treated rats.

The cytoprotective activity of alpha-lipoic acid against free radical toxicity, manifested during experimental hyperoxaluria, has been investigated. Glycollate was used as the inducer of oxalate hyperoxaluria in rats. The increase in lipid peroxidation and superoxide dismutase (SOD) activity, associated with a decrease in catalase activity and glutathione (GSH) level, are the salient features observed in tissues of hyperoxaluric rats.