Results 261 to 270 of about 831,741 (298)
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1987
In zones with a seasonal climate, plants undergo periodic transition from a lower to a higher level of resistance. All categories of frost resistance are affected, the tolerance to equilibrium freezing (Fig. 5.1) as well as the ability to undergo deep supercooling (Fig. 5.2).
Akira Sakai, Walter Larcher
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In zones with a seasonal climate, plants undergo periodic transition from a lower to a higher level of resistance. All categories of frost resistance are affected, the tolerance to equilibrium freezing (Fig. 5.1) as well as the ability to undergo deep supercooling (Fig. 5.2).
Akira Sakai, Walter Larcher
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STUDIES ON THERMOGENESIS IN COLD-ACCLIMATED BIRDS
Canadian Journal of Biochemistry and Physiology, 1963Effects on oxygen consumption of continuous intravenous injection of various doses of L-noradrenaline were measured in anesthetized chickens acclimated to 1 °C for 3 months, and in controls. No effects were produced in either and it is concluded that noradrenaline is not a calorigenic mediator in cold-acclimated chickens.
R R, CHAFFEE +3 more
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Ketone bodies in cold-acclimated rats
Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 1983Acclimation temperature (28 or 5 degrees C) modifies acetoacetate (AA) and beta-hydroxybutyrate (BOH) levels in blood and liver. In the fed state AA and BOH levels were increased in blood and liver of 5 degrees C adapted rats. In the fasting state (24 or 48 hr) an antiketotic action of cold acclimation was observed.
M, Goubern, M, Cadot
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Cold Acclimation in Rhododendron
2002Woody landscape plants residing in temperate zone experience adverse winter conditions during their annual cycle and, therefore, must develop sufficient cold hardiness in the fall of each year (cold acclimation) in order to prepare for over-wintering and surviving low mid-winter temperatures.
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Effect of photoperiod and cold acclimation on survival of mice in cold
Cryobiology, 1979Male albino mice (Swiss-Webster) were raised at 5 °C under short (8L:16D) and long (16L:8D) light periods. All mice were housed in groups of three to five individuals in plastic mouse cages (16 × 12 × 28 cm) until 42 days of age with food and water ad libitum and cold exposed to −40 °C between 10:00 am and 4:00 pm to determine survival time or time ...
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Cold acclimation in food-restricted rats
Comparative Biochemistry and Physiology Part A: Physiology, 1987Food intake, body weight and brown adipose tissue (BAT) mass and composition of rats exposed at 6 degrees C either with food ad libitum or food-restricted were compared with those of rats in the thermoneutral zone, with food ad libitum. Cold acclimation with food ad libitum increases food intake and prevents body weight gains.
M L, Puerta, M, Abelenda
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Gluconeogenesis in rats during cold acclimation
Canadian Journal of Biochemistry, 1968The in vivo rate of gluconeogenesis in the male rat was studied during acute exposure and acclimation to a cold environment (5 ± 2°), using an isotopic-tracer method. Four key gluconeogenic-enzyme activities (pyruvate carboxylase (EC 6.4.1.1), phosphoenolpyruvate carboxykinase (EC 4.1.1.32), fructose 1,6-diphosphatase (EC 3.1.3.11), and glucose 6 ...
P E, Penner, J, Himms-Hagen
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Heat and cold acclimation in helium-cold hypothermia in the hamster
American Journal of Physiology-Legacy Content, 1972A study was made of the effects of acclimation of hamsters to high (34-35 C) and low (4-5 C) temperatures for periods up to 6 weeks on the induction of hypothermia in hamsters. Hypothermia was achieved by exposing hamsters to a helox mixture of 80% helium and 20% oxygen at 0 C.
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Cold acclimation of hypothyroid rats
American Journal of Physiology-Legacy Content, 1974E A, Sellers, K V, Flattery, G, Steiner
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