On preserving wines in draught

Draught Animal Power

Draught animals and welfare.

In fifty developing countries, which contain half of the total human population of the world, there is a heavy dependence on draught animals as an energy source. These animals are used for agriculture operations in 52% of cultivated areas of the world, as well as for hauling 25 million carts. This situation is likely to continue for at least another fifty years. The work performed annually by t...

Linear maps preserving or strongly preserving majorization on matrices

For $A,Bin M_{nm},$ we say that $A$ is left matrix majorized (resp. left matrix submajorized) by $B$ and write $Aprec_{ell}B$ (resp. $Aprec_{ell s}B$), if $A=RB$ for some $ntimes n$ row stochastic (resp. row substochastic) matrix $R.$ Moreover, we define the relation $sim_{ell s} $ on $M_{nm}$ as follows: $Asim_{ell s} B$ if $Aprec_{ell s} Bprec_{ell s} A.$ This paper characterizes all linear p...

Nutritional implications of work in draught animals.

Draught animals have not been used to any great extent in agriculture in the developed countries since the introduction of tractor power in the 1930s and the rapid expansion of agricultural mechanization over the succeeding decades. In the Third World, however, draught-animal power continues to make an important contribution to rural and urban economies. In fields that tractors cannot reach, su...

Perception of draught in ventilated spaces.

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