Optima and limiting factors. With two diagrams in the text
Optima and limiting factors. With two diagrams in the text
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DOI:
10.1093/oxfordjournals.aob.a089000
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发表时间:
1905-01-01
期刊:
影响因子:
4.2
通讯作者:
Blackman, F. F.
中科院分区:
文献类型:
--
作者:
Blackman, F. F.
IN conception this article of it the is' proposed optimum'to as subject a primary to critical general consideration relation between the conception of the'optimum'as a primary general relation between physiological processes and the external or internal conditions which affect them. In treating physiological phenomena, assimilation, respiration, growth, and the like, which have a varying magnitude under varying external conditions of temperature, light, supply of materials, &cģ, it is customary to speak of three cardinal points, the minimal condition below which the phenomenon ceases altogether, the optimal condition at which it is exhibited to its highest observed degree, and the maximal condition above which it ceases again.As the maximum temperature for most metabolic processes is very near to the death point, exact location of it is attended with considerable experimental uncertainty and precise data are generally wanting. In practice, attention is usually concentrated upon the optimum of the condition and upon the general form of the middle part of the simple curve, which is usually accepted as a satisfactory graphic expression of the relation between the function and the condition.