منابع مشابه
An improved method for preparation of feces for bomb calorimetry.
was standardized before no. 1 and between the two no. 10 samples. The time required when the Auto Dilutor was used was: 3 mm to assemble equipment, 2.5 mm to label flasks, 9 mn to dilute standard and samples, and 8 mm to take readings. The on-line system only took 8 mm to run the standards and samples, saving 14.5 mm for the 10 duplicated determinations. No flasks are needed when an on-line dil...
متن کاملEndothermy and activity in vertebrates.
Resting and maximal levels of oxygen consumption of endothermic vertebrates exceed those of ectotherms by an average of five- to tenfold. Endotherms have a much broader range of activity that can be sustained by this augmented aerobic metabolism. Ectotherms are more reliant upon, and limited by, anaerobic metabolism during activity. A principal factor in the evolution of endothermy was the incr...
متن کاملAccounting for endothermy in fishes.
of a male. The number of mounts attempted by a male was also scored and recorded. The results of all the experiments were converted to lordosis quotient (LQ), defined as a percentage of full lordosis response (perineum elevated, all four legs extended from the initial crouch position and the head at an angle of 450 from the floor) divided by the number of mounts. Each group consisted of six ani...
متن کاملEndothermy in birds: underlying molecular mechanisms.
Endothermy is significant in vertebrate evolution because it changes the relations between animals and their environment. How endothermy has evolved in archosaurs (birds, crocodiles and dinosaurs) is controversial especially because birds do not possess brown adipose tissue, the specialized endothermic tissue of mammals. Internal heat production is facilitated by increased oxidative metabolic c...
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ژورنال
عنوان ژورنال: Limnology and Oceanography
سال: 1966
ISSN: 0024-3590
DOI: 10.4319/lo.1966.11.1.0126