Pyrolysis of polystyrene waste for recovery of combustible hydrocarbons using copper oxide as catalyst.

The present work is focused on pyrolysis of polystyrene waste for production of combustible hydrocarbons. The experiments were performed in an indigenously made furnace in the presence of a laboratory synthesised copper oxide. The pyrolysis products were collected and characterised.

Fuel production from waste polystyrene via pyrolysis: Kinetics and products distribution.

In the present study polystyrene waste (PS) was collected from a drop off site in a local market and pyrolyzed at heating rates of 5, 10, 15 and 20 °C/min and temperature range 40-600 °C under nitrogen condition. The apparent activation energy (Ea) and pre-exponential factor (A) were determined using 6 different kinetic methods. Activation energy and pre-exponential factor were found in the range of 82.

Genome-wide association studies of seven agronomic traits under two sowing conditions in bread wheat.

Background: Wheat is a cool seasoned crop requiring low temperature during grain filling duration and therefore increased temperature causes significant yield reduction. A set of 125 spring wheat genotypes from International Maize and Wheat Improvement Centre (CIMMYT-Mexico) was evaluated for phenological and yield related traits at three locations in Pakistan under normal sowing time and late sowing time for expose to prolonged high temperature. With the help of genome-wide association study using genotyping-by-sequencing, marker trait associations (MTAs) were observed separately for the traits under normal and late sown conditions.

Metabolic investigations in patients with hepatitis B and C.

Aim: To investigate the similarities and dissimilarities in patients with hepatitis B and hepatitis C, clinically and metabolically.

Methods: Fifty patients with hepatitis B virus and hepatitis C virus infection were included in this study, along with fifty healthy controls for comparison purposes. Intravenous blood (10 mL) samples from patients and healthy subjects were collected and made to clot before serum was separated and immediately levels of the enzymes, alkaline phosphatase (ALK), creatinine phosphokinase (CPK), lactate dehydrogenase (LDH), serum glutamate oxaloacetate transaminase (s-GOT) and serum glutamate pyruvate transaminase (s-GPT) were determined by a kit method.

The influence of crude cobra venom on electrolyte levels and Na+, K+ ATPase activity in erythrocytes liver and heart cells.

The present study focuses on the in vitro interaction between snake venom and electrolytes and Na+, K+-stimulated ATPase system in number of tissues from humans and animals. The venom produced a change in the resting cellular sodium and potassium levels in all the tissues tested. When compared, only human cancerous tissue showed apparent fall in sodium and a rise in potassium, while no significant change occurred in normal.

A rapid method for the determination of some antihypertensive and antipyretic drugs by thermometric titrimetry.

A simple and rapid method is described for the direct thermometric determination of milligram amounts of methyl dopa, propranolol hydrochloride, 1-phenyl-3-methylpyrazolone (MPP) and 2,3-dimethyl-1-phenylpyrazol-5-one (phenazone) in the presence of excipients. The compounds are reacted with N'-bromosuccinimide and the heat of reaction is used to determine the end-point of the titration. The time required is approximately 2 min, and the accuracy is analytically acceptable.