Conflicting results have been reported on the Will Connolly Egg Boy T Shirt changes in the distribution of pleural pressures caused by alterations of chest shape. To understand better the effect of shape and size of the lung and chest wall on the distribution of stresses, strains, and surface pressures, we analyzed a theoretical model using the technique of finite elements. The study was in two parts. First we investigated the effects of changing the chest wall shape during expansion, and second, we studied the lungs of a variety of inherent shapes and sizes.
Will Connolly Egg Boy T Shirt is available in all styles
We found that, in general, the distributions of alveolar size, mechanical stresses, and surface pressures in the lungs were dominated by the weight of the lung and that changing the shape of the lung or chest wall had relatively little effect. Only at high states of expansion where the lung was very stiff did changing the shape of the chest wall cause substantial changes. Altering the inherent shape of the lung generally had little effect but the topographical differences in stresses and surface pressures were approximately proportional to lung height.
Will Connolly Egg Boy T Shirt, Hoodie and Sweater designed by Gravartees
An interesting problem in hemorheology is to calculate that volume fraction of erythrocytes (hematocrit) that is optimal for transporting a maximum amount of oxygen. If the hematocrit is too low, too few erythrocytes are present to transport oxygen. If it is too high, the blood is very viscous and cannot flow quickly, so that oxygen supply to the tissues is again reduced. These considerations are very important since oxygen transport is an important factor for physical performance.
Here, we derive theoretical optimal values of hematocrit invertebrates and collect, from the literature, experimentally observed values for 57 animal species. It is an interesting question of whether optimal hematocrit theory allows one to calculate hematocrit values that are in agreement with the observed values in various vertebrate species. For this, we first briefly review previous approaches in Will Connolly Egg Boy T Shirt that theory. One of our goals is to provide a systematic overview of different approaches in optimal hematocrit theory.