Body Temperature homeostasis lab - Prezi
But every time we carry through this process we realize that ourconceptual scheme doesn't fit reality, because we are confrontedwith mutual relations, all of which express something of the animal asa whole. If we drop this scheme, then it becomes interesting that bodytemperature evidently means two very different things in the koala andthe sloth. Instead of looking for genetic or physiological causes thatwe assume have general validity, we look at the unique expression ofphysiological facts in the given context. We take the unique integrityof each animal seriously.
Body Temperature Experiment - International …
Goffart assumes that the causes of slothfulness will one day befound; we are just lacking the necessary information. I question thisassumption and believe that such an example shows, in fact, primarilythe limitations of the conceptual framework. In treating aspects ofan organism as potential causes, we conceptually lift them out of theorganism. Then we think of them affecting things in the organism asthough they were not part of it. By so doing we can think in generalterms of the factor "body temperature" as a cause, as if separatefrom the organism.
In a healthy person exercise increases blood flow and oxygen supply to the cells. The cells produce ATP, is widely used to produce heat in the body. With the increase in body temperature more increase metabolism, energy production and heat. The metabolic rate increases by 15% for every degree Celsius of body temperature.
English Language and Literature.
Enthusiasts have known for decades that there is some correlation between temperature, feeding, growth rate, and age of maturation in tarantulas. But, beyond that basic concept, the exact rules are only poorly understood. The reason for this is that it's a bad experiment.Perhaps it would be useful to examine these three points in a little detail. If an experiment is run with only one independent variable, perhaps changing only the temperature in our case, and ensuring that all other conditions are constant, then we can say that any deviation from the original conditions is almost surely due to the independent variable, i.e., changing temperature.If, however, you change two variables at the same time the best you can say is that any changes were due to either one or the other, or to both variables. It will be most difficult if not impossible to use the results of your experiment to predict the results of another experiment. If the results differed, you could never be sure exactly why except in a very general, indeterminate way. And, if they agreed, you could never be sure it wasn't purely coincidence - the result of two different conditions interfering with each others' effects.An additional problem involves the confusion between which dependent variable you're measuring, growth rate or maturation age. This may seem like a trivial concern to some, but there is a big though subtle difference, and unless this is defined at the outset an otherwise good experiment might go for naught.So, what's the difference? Growth rate is merely the rate at which body mass or some other measurable quantity changes with time. For instance, we gain in height, we gain weight, our arm length increases, etc. Note that we are restricting our consideration to only measurable changes in size. Growth is a quantitative change.Sexual maturation involves certain anatomical, physiological, and biochemical changes that result in an organism's ability to reproduce. And, of course, maturation age is the length of time from some benchmark (usually but not necessarily birth or hatching) until sexual maturation is achieved. These are aspects, even extensions of development from embryo to death. While growth and age of maturation are often closely related, growth is not always necessary or important to either the process of maturation or the age of maturation. While the age of maturation may be a measurable, quantitative character, maturation is primarily a qualitative characteristic.The uninitiated enthusiast may assume that growth and age of sexual maturation march hand in hand in tarantulas, as they more or less do in humans. But, this is not necessarily so with poikilotherms (e.g., tarantulas), and the two must ever be sorted out as distinct entities in these considerations. Failure to do so has produced much confusion and discord.The last reason why most of our anecdotal reports are bad experiments is that almost everybody who has explored these phenomena has either failed to control or accurately record the changes in the variables they were testing, failed to control other variables besides feeding and temperature (e.g., day length, sex, species), or failed to report the details of their experiment at all (e.g., making some vague anecdotal reference). Nearly everyone is using a different set of circumstances. And, when all their results are collected and an attempt is made to correlate their data, only very vague tendencies seem to appear and there are frequent, confounding contradictions.Remember that these all seem to be general rules, not hard and fast laws. The is mentioned first, and the last. Lastly, it is presumed that all other conditions are kept constant (i.e., "locked in").Further, it seems that all these effects are greatest immediately after escaping the eggsac (i.e., dispersal), and diminish as the tarantulas age and grow, ceasing entirely with adult males upon their ultimate molt, and slowing to an almost imperceptible rate with near-adult and adult females.Two questions that have not been addressed at all by enthusiasts except by pure conjecture are -Enthusiasts have learned to use the rules outlined above to selectively accelerate or retard the growth rates of their tarantulas. One aspect of this practice is called in the arachnoculture hobby. Power feeding may be defined as maintaining a tarantula at a slightly elevated temperature and feeding it excessively to accelerate its growth and maturation rates. It's generally used in only a few instances.As mentioned above, the exact rules that govern the final growth rate of a tarantula are not well understood, and may be different for each kind. But, beyond the simple observation that a higher temperature and more food generally promotes faster growth in tarantulas, the issue becomes very muddy. It's by no means a universal dictum.By way of example, and as noted above, power feeding some African species causes the males to mature much more quickly, but at a significantly smaller body size, the so-called "mature runts" mentioned above.And, these authors were party to an instance where a male that was power fed to the extreme grew to a quite respectable size and matured in only a few days more than nine months! And, this characteristic has been noted by others as well. (Five years or more is normal.)Lastly, on at least on the Internet, an experienced and respected enthusiast seriously questioned whether power feeding really did promote a relatively faster maturation among males than among their corresponding sisters.It would seem that the matter is far from settled.While those tarantulas that are kept warmer will eat more, may grow faster or mature sooner, and may die more quickly, what happens if tarantulas are kept a little cooler and fed less? Simple logic would lead one to assume that if males are kept cooler and fed less than their brothers from the same eggsac which are kept at higher temperatures and fed more, they would take longer to mature. Baerg (citation currently unavailable) even noted this with , and a few anecdotal reports would seem to confirm this hypothesis, but there are not enough of them to permit an across-the-board declaration of fact.One situation in which such a consideration would be important is the instance where only a very few eggsacs were available during only one season from a rare or rarely imported species. As the baby tarantulas from those eggsacs grew, the males would ordinarily mature one or two years before their sisters. That would make breeding that kind of tarantula impossible since the mature males would all have become too old or even died of old age before their sisters were mature.And indeed, this author has heard unconfirmed reports of enthusiasts using the principle of "reverse power feeding" to selectively retard the growth of males so they could be bred to females of their same age.
This experiment is to see if cling wrap around a person ..
Currently we are approaching the prospect of spending hundreds of billions of dollars, or more, to combat global warming, and we don't even know its magnitude or real trend, because the major temperature indices we possess are giving very different readings. To oversimplify a bit, there are two competing methodologies that are giving two different answers. NASA's GISS uses a melding of surface thermometer readings around the world to create a global temperature anomaly. And the UAH uses satellites to measure temperatures of the lower or near-surface troposhere. Each thinks it has the better methodology (with, oddly, NASA fighting against the space technology). But they are giving us different answers.