Static structural and linear buckling analysis of diesel generator connecting rod

Connecting rod is one of the major components in an internal combustion (IC) engine which provides reciprocating motion from the rotary motion to the piston. In an IC engine the high combustion gas will produce, due to which high loads will developed in the connecting rod. It is very important to study the behaviour of connecting rod in an IC engine for diesel generator due to high pressures on connecting rod. It is also important to study the buckling load of the connecting rod which may reduce the failure of connecting rod. Hence in the project the static structural and linear buckling analyses have been conducted on a connecting rod for a diesel generator, resembling an exact diesel generator connecting rod. Estimation like the maximum stresses, maximum deformation, buckling load factor and critical buckling load are determined for different materials like aluminum alloy 6061, titanium alloy, magnesium alloy and aluminum boron carbide and new modified design. CAD model of connecting rod has been generated by using industrial CAD tool solid works and analysis has been done by using industrial CAE tool Ansys Workbench. In this project the results of static and buckling analysis has been compared and presented the suitable design of connecting rod for better performance. Finally, the results are justified by suggesting why Al alloy holds better replacement that other mentioned alloys</jats:p

Convenient procedures for obtaining pure C<SUB>60</SUB> and C<SUB>70</SUB> in relatively large quantities

It is shown that by using appropriate mixtures of activated charcoal and silica gel as adsorbents, relatively large quantities of C<SUB>60</SUB> and C<SUB>70</SUB> can be prepared in pure form, by a simple filtration procedure

Isolation and quantification of DNA from epithelial cells obtained from acrylic removable partial denture for sex identification

Abstract Background This study is aimed to evaluate the use of epithelial cells adhering the acrylic removable partial denture in establishing the sex of the individual using sex-determining region of the Y chromosome (SRY) gene. With a hypothesis that prosthetic appliance can also be used as a source of DNA in forensics for sex determination. A sample of 30 partial dentures from different denture wearers was selected for this study. Informed consent was taken from the subjects and institutional ethical clearance was obtained for this study. Samples were then washed in saline and scrapings from 0.5 × 0.5 cm2 of the tissue contacting surface were taken using a blade of fixed thickness. DNA extraction was done from these isolated epithelial cells using Real Genomics YGB 100 (Real Biotech Corporation, Taiwan). Quantification and purity assessment of the extracted DNA was done using a Nanodrop ND-1000 spectrophotometer and clean DNA was subjected to real-time PCR amplification using SRY sex-typing marker for the detection of the presence of the SRY gene. Results Isolation of epithelial cells and extraction of DNA from all 30 acrylic removable partial dentures were possible. Average DNA yield quantified from all samples was 32.37 ng/μl with a minimum yield of 2.17 ng/μl and a maximum yield of 117.57 ng/μl. On amplification of the target sequence, sex determination was possible from all samples with 100% accuracy. Conclusion Acrylic removable partial denture can also be used as a source of DNA in forensics for sex identification

Anganwadi based nutritional survey of children in Attappadi

Background: Malnutrition and anaemia form major public health problems among the school age children, particularly in the developing countries.Methods: A cross sectional study was conducted among children between 6 months and 18 years, in randomly selected 25 Anganwadis of Attappadi area. Objective of the study was to estimate the prevalence of anaemia and malnutrition among the children of Attappadi. Children were divided in to tribal and nontribal. Anthropometric measurements, haemoglobin estimation by cyanmethemoglobin method and peripheral smear examination were done.Results: 65.5% tribal and 54.1% non-tribal were anaemic. Among males 65.9% tribal and 56.4% non-tribal were anaemic. Among females 65.1% tribal and 52.6% nontribal were anaemic. In the age group less than 6 years, 9% tribal females, 8.9% nontribal females, 12% tribal males and 5.8% nontribal males were severely stunted. Above 6yrs it was 3.3% tribal females, 2.7% nontribal females, 2.4% tribal males and 7.4% nontribal males. In the age group less than 6 years, 12.5% tribal females, 3.9% nontribal females, 15.9% tribal males and 4.3% nontribal males had severe underweight. Above 6 years it was 8.3% tribal females, 0% non-tribal females, 19% tribal males and 3% non-tribal males.Conclusions: Anaemia and malnutrition are common among children of Attappadi. Tribal children are more affected than non-tribal children. Anaemia is more common among two age groups, less than 5 years and more than 11 years. Among females’ adolescent girls are more affected. Periodic assessment of growth parameters and early detection and treatment of anaemia are needed.</jats:p