The adoption of small-scale pumped irrigation technologies was evaluated using field surveys in Malawi. Four systems were identified, distinguished by ownership (group versus individual) and technology (treadle motorized). Farmer access to pumps either through organizational support (incentivized) or privately (self-motivated), with progression depending on the mode farmers’ attributes. Self-mo...

Sodium-potassium pumps (Na pumps) are the only known plasma membrane receptors for cardiac glycosides. However, adrenocortical cells secrete an endogenous ouabain via an unknown mechanism that is subject to feedback inhibition via the cell surface. In addition, recent studies suggest that the induction of sustained hypertension by ouabain analogs in rats may be independent of Na pump inhibition...

In this paper, an economic study of solar heat pumps and an investigation of differences between solar heat pumps and conventional heat pumps—based on their performances and energy consumption—are conducted for a residential apartment located in Austin, Texas, USA. Heating in the apartment is provided via a solar heat pump during the cold months of a year. Solar collectors are used to meet the ...