The Physiological Principle of Minimum Work: II. Oxygen Exchange in Capillaries

The Physiological Principle of Minimum Work

P. S. Bauer t has recently questioned the vMidity of the Physiological Principle of Minimum Work as formulated and applied by me 2 to certain problems concerning the efficiency of operation of the oxygen transport system in man. In contrast to his opinions or the implications which he makes in respect to my work, I reply that this principle should not, and does not rest upon any principle of ph...

The Physiological Principle of Minimum Work: I. The Vascular System and the Cost of Blood Volume.

The Physiological Principle of Minimum Work Applied to the Angle of Branching of Arteries

which embodies Poiseuille's law of flow and a term which covers the cost of maintenance of blood volume, p is the fall in pressure in dynes/cm. ~, b is the cost of blood volume in ergs/cc, sec. (considered constant), vol is the volume, r is the radius of the section of artery, and 71 is the viscosity of whole blood (also taken as "constant"). At constant flow, f (that is, for any given steady s...

this study investigated the relationship between quality of work life and organization citizenship behavior from the viewpoint of teachers in high schools in tehran city.

چکیده هدف از پژوهش حاضر بررسی رابطه کیفیت زندگی کاری و رفتار شهروندی سازمانی در مدارس مقطع متوسطه پسرانه شهر تهران از دیدگاه دبیران بود. روش پژوهش حاضر توصیفی و از نوع همبستگی بود. از بین دبیران مدارس شهر تهران تعداد 380 نفر به روش نمونه گیری خوشه ای چند مرحله ای به عنوان نمونه پژوهش انتخاب شدند و با تکمیل پرسشنامه ی کیفیت زندگی کاری والتون(1975) و پرسشنامه ی رفتار شهروندی سازمانی پودساکو...

Oxygen delivery through capillaries.

During physical exertion the consumption rate increases and some cells suffer from the lack of oxygen. The time-wise evolution of hypoxia is analyzed mathematically under the condition the perfusion of each capillary is constant. The domain used contains multiple non-homogeneous capillaries of different solute out. Cells surrounding capillaries may consume or preserve more oxygen than are neces...