Hibernation

Hibernating animals lower their body temperature, slowing down life processes. 

Heat of vaporization, 66 see also Vaporization Helium, 91 boiling point, 63 heat of vaporization, 105 interaction between atoms, 277 ionization energy, 268 molar volume, 60 on Sun, 447 source, 91 Hematite, 404 Hemin, structure of, 397 Hess s Law, 111 Heterogeneous, 70 systems and reaction rate, 126 n-Hexane properties, 341 Hibernation, 2 Hildebrand, Joel H.. 163 Holmium, properties, 412 Homogeneous, 70 systems and reaction rate, 126 Hydration, 313 Hydrazine, 46, 47, 231 Hydrides of third-row elements, 102 boiling point of. 315 Hydrocarbons, 340 unsaturated, 342... 

Brown adipose tissue is the site of nonshivering thermogenesis. It is found in hibernating and newborn animals and is present in small quantity in humans. Thermogenesis results from the presence of an uncouphng protein, thermogenin, in the inner mitochondrial membrane. 

C06-0136. The heat required to sustain animais that hibernate comes from the biochemicai combustion of fatty acids, one of which is arachidonic acid. For this acid, (a) determine its structurai formuia (b) write its baianced combustion reaction (c) use average bond energies to estimate the energy released in the combustion reaction and (d) caicuiate the mass of arachidonic acid needed to warm a 500-kg bear from 5 to 25 °C. (Assume that the average heat capacity of bear flesh is 4.18 J/g K.)... 

After a period of hibernation following the publication of Turkevich s seminal papers in the 1950s [44,46], a whole plethora of preparative protocols has been published since Henglein and coworkers resumed this work in the late 1970s [107,108], The goal of this chapter is not to present a comprehensive directory of all synthetic papers on nanometal colloids, but to provide the reader with a general survey of a number of modern versions of established preparative methodologies that have been tested and found effective in a number of practical applications. 

Mammals may die from pesticide poisoning not immediately, but many months later, when they more actively use their fat deposits, for example, when waking up after hibernating they are then poisoned by deposits of toxic substances in their fat [3,6]. 

Hibernation in times of drought is probably due to reversible agglomeration at the higher concentration. It is not yet dear why the rate of me-... 

The timing of application of 1080 baits is critical. In one mishap, baits were dropped aerially while many ground squirrels — the targeted species — were still in hibernation underground for the winter and had not emerged (Collins 1965). Aerial application of 1080 baits in a ground squirrel... 

The results of this study demonstrate that upon emergence from winter hibernation, newly-emerged males are attractive to other males, albeit not to the same degree as females. Furthermore, it appears that the attractive nature of these males is due to the presence of a pheromone profile similar to the female sexual attractiveness pheromone. As hypothesized, complete GC/MS analysis showed no significant... 

Many animals hibernate during parts of the year, entering a state that is similar to a very deep sleep. But hibernation is more than simply a deep sleep. The animal s body temperature drops well below its normal range, the animal does not wake up for a long period of time, and its metabolism slows to the point that the animal does not need to eat or relieve itself during that period. 

In order to prepare for hibernation, the animal must build up its body weight and increase its body fat. This is important, since the animal will be living off its own body fat during the months of hibernation. Of course, once the period of hibernation is over, the animal wakes up to find itself slim and trim once again ... 

In the winter the multitude suppose everything to be dead, because the earth is bound in the chains of frost, so that nothing is allowed to sprout forth. But as soon as the spring comes, and the cold is vanquished by the power of the Sun, everything is restored to life, the trees and herbs put forth buds, leaves, and blossoms, the hibernating animals creep forth from... 

Stenzel-Poore MP, Stevens SL, Xiong Z, Lessov NS, Harrington GA, et al. 2003. Effect of ischaemic preconditioning on genomic response to cerebral ischaemia similarity to neuroprotective strategies in hibernation and hypoxia-tolerant states. Lancet 362 1028. 

Garden sheds can provide useful hiding places for different species. Butterflies may creep inside to hibernate, so leave the shed door open on sunny fall afternoons and shut it late in the evening. Remember that garden birds will sometimes nest in the most unlikely places they might appreciate your shed as much as you do ... 

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