Nutrition -The problem of nutrition in these young infants is made doubly difficult by a great demand for food and a poor supply. The demand for food is relatively great because of the increased heat loss of premature infants. In proportion to its bulk the little body has a large surface from which to radiate heat. In addition, the layer of non-conducting fat is thin and the heat regulating mec...

The mechanisms that set the thermal limits to life remain uncertain. Classically, researchers thought that heating kills by disrupting the structures of proteins or membranes, but an alternative hypothesis focuses on the demand for oxygen relative to its supply. We evaluated this alternative hypothesis by comparing the lethal temperature for lizard embryos developing at oxygen concentrations of...

teurizers (1). I f these various precautions are not sufficient to produce a satisfactory steam supply, the alternative is the production of culinary steam from potable water, using the unsatisfactory primary steam supply as a source of heat. The 3A recommended practice just referred to includes a sketch of the recommended location of the parts necessary for such an installation. The other alte...