Rooms with concrete slab roofs directly exposed to the sun become unbearably hot during summer and very cold during winter. Huge amounts of energy are required to keep them comfortable. Application of thermal insulation on roofs significantly reduces energy required for heating and cooling. The...

According to a WHO report 80% of the diseases in developing countries are due to water related bacteria. Drinking boiled water is one of the solutions to this problem. Fuel wood is scarce but solar energy is plentiful in these countries and may be used to kill bacteria in drinking water. A...

As an approach to economic problems, the input-output analysis is in the tradition of general equilibrium econcmics. However, it is a general equilibrium analysis with numerical strength. It is a general equilibrium theory because it analyzes all the industrial sectors of the economy...

The nature of the tea plant, Camellia sinensis, is such that certain natural factors heavily influence where it can be grown and how productive it will be. Among these factors, rainfall. temperature, and soil quality (particularly, drainag~) seem to be the most important and have limited tea...

Experimental site had pH value of 7.44 with electrical conductivity of 0.14 dS/cm. Soil was alkaline, strongly calcareous (21.25% CaCO3), deficient in organic matter, nitrogen & phosphorus and adequate in potassium. It has no problem of salinity and is clay loam in texture. The grain yield was...

Utilizing HIES (1992-93) data and Economic Survey of Pakistan (various issues), this article focuses on the effects of government expenditures on the distribution of income across various income groups in the urban-rural areas of Pakistan. Net National Product (NNP) is used as the income base....