Hundhausen E, Theves B
Eur J Appl Physiol Occup Physiol. 1979 Mar 1;40(4):235-44. doi: 10.1007/BF00421515.
The skin temperature changes of the third finger were registered with the help of an infrared camera during a cooling process of the hand and forearm of a male, 38-years-old subject. Using the system of formulae, explained in previous publications [4-7], it was possible to describe the blood flow changes in the finger. The results are: 1. A formula for the "pseudo thermal conductivity" (material constant of the thermal conductivity plus the convective contribution), which is similar to the formula used for theat release of the whole body [4], describes well the experimental results. The "pseudo thermal conductivity" is a measure for the specific blood flow and can be converted into it. 2. The "pseudo thermal conductivity" has a local maximum. 3. The position of the maximum is independent of the tissue temperature. The anatomical properties of the finger seem to determine the position of the maximum. 4. The maximum of the "pseudo thermal conductivity"--and therefore the maximal blood flow--increases stronger than linearly with the tissue temperature.
在一名38岁男性受试者的手部和前臂冷却过程中，借助红外热像仪记录了其无名指的皮肤温度变化。利用先前出版物[4 - 7]中解释的公式系统，可以描述手指中的血流变化。结果如下：1. 一个用于“伪热导率”（热导率的材料常数加上对流贡献）的公式，类似于用于全身热量释放的公式[4]，能很好地描述实验结果。“伪热导率”是特定血流的一种度量，并且可以将其转换为血流。2. “伪热导率”有一个局部最大值。3. 最大值的位置与组织温度无关。手指的解剖特性似乎决定了最大值的位置。4. “伪热导率”的最大值——因此也是最大血流——随组织温度的增加比线性增加更强。
