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The Chemical plants, particularly those manufacturing urea are amongst the most complex plants in the chemical process industry. The severe operating conditions affect the safety of equipment, personnel involved and the environment. Different occurred accidents such as Port Neal Nitrogen Fertilizer (Dec 1994), Toulouse Fertilizer complex (Sept 2001) and Coffeyville Fertilizer Plant (Oct 2010) stresses to conduct hazard studies in fertilizer plants. Urea manufacturing process is described for understanding before conducting HAZOP studies. PHA is discussed including its basics, requirements,...

Pakistan is facing severe natural gas crisis and all industries are suffering. Hence all efforts should be made to save natural gas from domestic use. The conventional radial flow natural gas stove burners have low thermal performance because of high convective and radiation heat losses. Swirl flow stoves have comparatively high thermal efficiency. The shape of vessel has significant effect on the performance of stoves. A swirl stove with two heating vessels (a pan and a pot) was used for experiments. Three different flame covering draft tubes were tested i.e. Ceramic mould, Aluminum draft...

Thought the tone can be a bit New Agey, The scientific approach and practical hands-on program that helps creative writers and scientific application unpack the reasons for their creative block and to overcome on the issues. Seven years ago, I found children were suffering in abdominal pain after the use of milk powder and doctor diagnosed enteritis at that time as a student i programed to work out for the trouble shooting. Returning to it now, I found that my impressions had not changed, and that the process still worked.

Goat one of the important livestock specie in both developing and developed countries, it has a pivotal role in small scale farming and rural economy. Parasitic nematodes of gastrointestinal tract (GIT) are the main constraints to goat production all over the world and a significant health issues in goat rearing areas with poor sanitation and management. Heavy economic losses due to parasites are associated with reduced productivity, mortality and parasite control measures. Goats harbor a variety of GIT parasites e.g. a voracious blood sucking nematode Haemonchus contortus, suck 0.05 ml of...