Body size

Daily cholic acid production appeared to bear some relationship to body weight in a study in which the effect of butter and corn oil on the cholesterol metabolism was investigated. Thus the correlation coefficient between the average cholic acid production rate of each control subject and the average weight is 0.75 (73). 

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Limit max/min flow to about 10 for equal percentage trim and 5 for linear. Equal percentage trim usually requires one larger nominal body size than linear. 

Valve Body Size (Inlet Diameter x Outlet Diameter), in. 

The required orifice continuous flow capacity is determined at steam chest pressure to condensate system pressure at a flow 6 to 8 times design. If designed for normal flow the trap would have to be open 100% of the time. Then, as stated above, a body size is selected that can contain the required orifice (not be above the stated... 

The control valve is assumed to be fitted with the maximum size plug and seat for its valve body size. 

Cold Habitats. Because of considerations of surface area relative to body mass, animals that live in cold habitats tend to have larger body sizes and smaller extremities (especially ears and legs) compared to their counterparts in warmer habitats. Animals that live in cold habitats also have a greater amount of insulation, such as fat, fur, or feathers. Behavioral adaptations include gathering in groups, which effectively decreases the exposed surface area of each individual. 

In rat liver mitochondria, in state 4, the AP was estimated to be about 220 mV, with the membrane potential representing about 90% of this (Nicholls, 1974 Appendix 3). Similar values have been reported for human and rat skeletal muscle mitochondria in state 4 (Stumpf et al., 1982). The control of the rate of electron transport is not only determined by the availability of ADP, but also of Pj oxidizable substrates, and oxygen. There is evidence for futile cycling of protons in intact normal rat hepatocytes (Brand et al., 1993). Recently, Porter and Brand (1993) found a correlation between the proton permeability of the inner membrane of liver mitochondria and body size in animals from the mouse (20 g) to horses (150 kg) with a decrease in permeability with increasing weight of several-fold at a constant... 

Fourth, body size is one of the major adaptations of any animal species. It affects all aspects of an animal s life including locomotion, diet, and reproduction. As such, it should also affect an animal s water balance due to such general considerations as the surface to volume ratio during heat production. Storage, and loss. Obviously, the average species body size is important in considering oxygen inputs and outputs. 

Figure 6.5. 5 0 of tooth enamel phosphate versus body size (log scale) for Kenyan fauna analyzed in this study. With the exception of the dikdik, there is a general association between the two variables. In contrast to tbe body-size model (Bryant and Froelicb 1995) wbicb predicts a range of values close to l%o, however, the measured range in 8 0 values for species averages is 5%a. This and the anomalous values for the dikdik reflect physiological and behavioral adaptations by these desert adapted species. 

These data show that both models identify important variables that affect 5 Obody w.ier and 8 Ophospha in mammals. Both serve to identify the dikdik as an outlier which may be explained by their sedentary daytime pattern. On the other hand, the body-size model (Bryant and Froelich 1995), which may reliably predict animal 5 0 in temperate, well-watered regions, does not predict 8 Opho,phaw in these desert-adapted species. The second model (Kohn 1996), by emphasizing animal physiology independent of body size, serves to identify species with different sensitivities to climatic parameters. This, in conjunction with considerations of behavior, indicate that certain species are probably not useful for monitoring paleotemperature because their 5 Obodyw er is not tied, in a consistent way, to The oryx, for example, can... 

Fish show generally low HMO activities that are not strongly related to body weight. This may reflect a limited requirement of fish for metabolic detoxication they are able to efficiently excrete many compounds by diffusion across the gills. The weak relationship of HMO activity to body weight is probably because fish are poikilotherms and should not, therefore, have an energy requirement for the maintenance of body temperature that is a function of body size. In other words, the rate of intake of xenobiotics with food is unlikely to be strongly related to body size. 

TANNER, J M (1976) Population differences in body size, shape and growth rate a 1976 review , Dis Child, 51, 1-2. 

Knowledge of intrinsic co-variables. Concentrations of mercury in fish are typically correlated with age or body size. An understanding of, and ability to account for, the effects of such intrinsic variables is essential for evaluating contaminant trends. 

Inadequate ultrafiltration and solute dialysis in patients with a large body size, unless large volumes and frequent exchanges are employed. 

NakayamaK, IshidaN, Shirane Metal 1996 Mice lacking p27(Kipl) display increased body size, multiple organ hyperplasia, retinal dysplasia, and pituitary tumors. Cell 85 707-720... 

The size of the body is another factor that determines cardiac output. Healthy young men have a cardiac output of about 5.5 to 6.0 1/min the cardiac output in women averages 4.5 to 5.0 1/min. This difference does not involve gender per se, but rather the mass of body tissue that must be perfused with blood. Cardiac index normalizes cardiac output for body size and is calculated by the cardiac output per square meter of body surface... 

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