Muscular work, Tema 187Carnegie Institution of Washington, 1913 - 176 páginas |
Dentro del libro
Resultados 1-5 de 44
Página 3
... activity and the total energy transformations . a F. B. Gilbreth , Bricklaying system , New York , 1910 . 3 A study of the mechanical efficiency of a steam - PART I Heat output of the animal body Investigations by Zuntz and his ...
... activity and the total energy transformations . a F. B. Gilbreth , Bricklaying system , New York , 1910 . 3 A study of the mechanical efficiency of a steam - PART I Heat output of the animal body Investigations by Zuntz and his ...
Página 4
... activity , it would be logical and possible to lead up to a most rational method for producing this end and to explain the diversity in the training systems ; the best features of the different systems could then be combined . The ...
... activity , it would be logical and possible to lead up to a most rational method for producing this end and to explain the diversity in the training systems ; the best features of the different systems could then be combined . The ...
Página 5
... activity in studying respiration resulted in two remarkable memoirs by himself and Séguin , the first of which was published in 1789. " The results reported in this first memoir have particular significance in con- nection with the ...
... activity in studying respiration resulted in two remarkable memoirs by himself and Séguin , the first of which was published in 1789. " The results reported in this first memoir have particular significance in con- nection with the ...
Página 7
... activity upon the metabolism . After a brisk walk he found a great increase in the carbon - dioxide excretion , corresponding to 80 c.c. of carbon dioxide per minute . His observations on the after - effect of work are also of interest ...
... activity upon the metabolism . After a brisk walk he found a great increase in the carbon - dioxide excretion , corresponding to 80 c.c. of carbon dioxide per minute . His observations on the after - effect of work are also of interest ...
Página 13
... activity upon the carbon - dioxide production was that made by Edward Smith , who early recognized the difficulties of computing the carbon - dioxide output of any individual owing to the unknown factor of muscular exertion . Smith ...
... activity upon the carbon - dioxide production was that made by Edward Smith , who early recognized the difficulties of computing the carbon - dioxide output of any individual owing to the unknown factor of muscular exertion . Smith ...
Términos y frases comunes
1.5 amperes a.m. and 9h a.m. Between 9h a.m. the average a.m. The pulse-rate a.m. the subject absorbed per minute age pulse amount approximately Aver average rate Average respira average speed base-line begun at 9h Benedict and Carpenter bicycle ergometer body C.C. amp calories per minute calorimeter cals carbohydrates Carbon dioxide Date cent combustion computed couch diet Duration eliminated per minute external muscular glycogen grams gross efficiency heat equivalent hour increase interval katabolism kilogrammeters kilograms laboratory load Lying M. A. M. without food mechanical efficiency metabolism motor mouthpiece muscular activity no-load Oxygen absorbed oxygen consumption pedals period the average periods the subject perspiration produced pulse-rate at 8h respiration apparatus respiration experiments respiratory quotient revolutions per minute riding series of experiments severe muscular spirometer subject lay subject M. A. M. subject rode tion-rate tions per minute tory quotient values obtained ventilation work-period Zuntz
Pasajes populares
Página 9 - ... point de variation sensible, la conservation de la chaleur animale est due, au moins en grande partie, à la chaleur que produit la combinaison de l'air pur respiré par les animaux avec la base de. l'air fixe que le sang lui fournit.
Página 11 - ... expressed his belief that the blood was driven through the vessels by the mechanical action of the heart, or that respiration took place according to the common laws of the diffusion of gases. The present generation, on the contrary, is hard at work to find out the real causes of the processes which go on in the living body. They do not suppose that there is any other difference between the chemical and the mechanical actions in the living body, and out of it, than can be explained by the more...
Página 9 - La respiration est donc une combustion, à la vérité fort lente, mais d'ailleurs parfaitement semblable à celle du charbon; elle se fait dans l'intérieur des poumons, sans dégager de lumière sensible, parce que la matière du feu, devenue libre, est aussitôt absorbée par l'humidité de ces...
Página 9 - ... how large a quantity of heat might be produced, by proper mechanical contrivance, merely by the strength of a horse, without either fire, light, combustion, or chemical decomposition; and, in a case of necessity, the heat thus produced might be used in cooking victuals.
Página 11 - Whence it appears that one-quarter of the whole amount of vis viva generated by the combustion of food in the animal frame is capable of being applied in producing a useful mechanical effect, — the remaining three-quarters being required in order to keep up the animal heat, etc.
Página 9 - ... proper mechanical contrivance, merely by the strength of a horse, without either fire, light, combustion, or chemical decomposition; and, in a case of necessity, the heat thus produced might be used in cooking victuals. But no circumstances can be imagined in which this method of procuring heat would not be disadvantageous; for more heat might be obtained by using the fodder necessary for the support of a horse, as fuel.
Página 11 - The majority of the physiologists in the last century, and in the beginning of this century, were of opinion that the processes in living bodies were determined by one principal agent which they chose to call the " vital principle." The physical forces in the living body they supposed could be suspended or again set free at any moment, by the influence of the vital principle ; and that by this means this agent could produce changes in the interior of the body, so that the health of the body would...
Página 9 - ... cette combustion se communique au sang qui traverse les poumons, et de là se répand dans tout le système animal. Ainsi l'air que nous respirons sert à deux objets, également nécessaires à notre conservation : il...