The structure and formation energies of cation antisite defects for a series of stannate pyrochlores A2Sn2O7 (A = La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Lu, and Y) and titanate pyrochlores A2Ti2O7 (A = La, Sm, Gd, Tb, Dy, Ho, Er, Lu, and Y) have been systematically investigated using the first-principles total energy calculations. The calculated results reveal that the lattice parameters increase and the oxygen positional parameters decrease with increasing ionic radii of the lanthanides in the...

Computational Chemistry  Composite Material  Physical Chemistry 

Background: The burden of malnutrition in Ethiopia is the second highest in sub Saharan Africa. According to the recently released Ethiopian Demographic and Health Survey report of 2011, the prevalence of child stunting, underweight and wasting were 44% stunted, 10% wasted and 29% underweight respectively. Objectives: To determine the magnitude and risk factors of malnutrition among 6 - 59 months children from Community Based Nutrition Program implementing and nonimplementing districts from sout...

Nutrition 

Objective: Fetal femur length and head circumference ratio is an important ratio for assessment of fetal skeletal growth. So far no study has been done on this ratio on Bangladeshi fetuses. Therefore this study was conducted. Method: This study was prospective and cross-sectional. A nomogram was prepared on well dated, singleton fetuses. A table and a graph were prepared by fitting Polynomial regression models. Results: Consecutive patients who fulfilled the required criteria were included. A to...

Radiology & Medical Imaging 

Purpose: To assess the risks of digestive surgery in patients under antiplatelet therapy. Increasing numbers of patients requiring a surgical digestive procedure are on APT. Several studies have shown that APT interruption during the perioperative period increased thrombotic risks, while in the case of maintaining APT, hemorrhagic complications were not increased. Methods: We included prospectively all patients under APT who were operated on from September 1, 2010 to October 31, 2011. Two groups...

Surgery & Surgical Specialties 

In this study, the chromosome karyotype of Plumbago auriculata was analyzed by using a chro-mosome mounting technique with the primary root tip of seed germination. The aim was to find out the most suitable method for Plumbago auriculata by comparing the effect of different pretreatment and dissociation time on chromosome. The results showed that the best pretreatment was 0.05% colchicine solution under 0℃ - 4℃ or 2 h and then 1 mol/L HCL under 60℃ water for 6 min. Karyotype analysis of Plumbago...

Biotechnology  Cell Biology  Bioinformatics 

The present work relates to a process for the production of nano particles pigment and relates particularly to the production of nano composite powders consisting of individual particles with sizes in the range of 10 nm to 100 nm. This process involves the mechanically activated chemical reduction of reducible metal compounds during milling, to refine and manufacture nano com- posite powder. Nano particle pigment for ceramic glazes was obtained by mechanochemical inser-tion of Fe-Cr-Ti in an α-A...

Composite Material  Analytical Chemistry 

A solution of the intensification problem of the column chemical reactors is presented in the approximation of the mechanics of continua. The effect of the radial non-uniformity of the velocity distribution, the effect of the tangential flow and simultaneous mass, and heat transfer processes are analyzed. A theoretical analysis of the simultaneous mass and heat transfer processes in column reactors is presented.

Industrial Engineering  Chemical Engineering & Technology 

Background: With the rising educational unemployment in India, one can recognize the possibility of certain imbalance in the acquirement of tertiary education and the requirement of workforce in India. An assessment of youth’s selection of their post-secondary courses could provide a layout for the effective planning of higher education with respect to the demand of workforce in the country. This study examines a set of individual/household, institutional, and regional factors influencing the se...

Sociology  Economics  Education  Demography 

In this theoretical study we used density functional theory to calculate the molecular structures of Silver Halo compound, AgF3. The molecular geometry, vibrational frequencies, energies and natural bond orbital (NBO) in the ground state are calculated by using the DFT (B3LYP) methods with LANL2DZ. The T.S guesses were generated by the linear synchronous transit method, at the DFT implemented on Gaussian 98 program. The geometries and normal modes of vibrations obtained from B3LYP calculations a...

Computational Chemistry  Inorganic Chemistry 

Percutaneous renal biopsy with sonographic guidance is the standard by which renal tissue is sampled. In patients with uncorrectable coagulopathy or other contra-indication, percutaneous biopsy may not be feasible and a transvenous approach is preferred. This method limits the risk of bleeding complications as tissue is obtained endovascularly without transgression of the renal capsule. Arteriovenous fistula (AVF), a well-documented complication of percutaneous biopsy, has yet to be reported whe...

Nephrology