Leeches run cold, then hot

Leeches run cold, then hot.

Food processing is costly, potentially limiting the energy and time devoted to other essential functions such as locomotion or reproduction. In ectotherms, post-prandial thermophily, the selection of a warm environmental temperature after feeding, may be advantageous in minimizing the duration of this elevated cost. Although present in many vertebrate taxa, this behaviour had not previously bee...

Elena Gracheva: Ion channels run hot and cold

With her father, Oleg Grachov, doing research in high-energy particle physics and her mother, Tatiana Grachova, working as an engineer, Elena Gracheva feels she was fated for a career in the sciences. Her chief childhood pursuits involved solving tough physics and chemistry problems with her parents. But she says her reaction upon fi rst learning about DNA and protein expression was one of incr...

Elaine V . Hill Then Run ... Insulin Vesicle

Physiol. Soc.. ESSN: 1548-9221. Visit our website at http://www.the-aps.org/. Sci./Am. American Physiological Society, 9650 Rockville Pike, Bethesda MD 20814-3991. © 2006 Int. Union Physiol. the physiological developments. It is published bimonthly in February, April, June, August, October, and December by (formerly published as News in Physiological Science) publishes brief review articles on ...

Cold and hot.

Hot & Cold Working

Q.1. What is hot working ? State its principles, advantages and disadvantages. Ans. Mechanical working of metals above its recrystallisation temperature is known as hot working. Advantages : 1. Larger deformation can be accomplished and more rapidly by hot working since the metal is in plastic state. 2. Porosity of the metal is considerably minimised. 3. Concentrated impurities, if any in the m...