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Dry-Heat Resistance of Bacillus subtilis var. niger Spores on Mated Surfaces

机译：枯草芽孢杆菌变种的抗干热性交配表面上的尼日尔孢子

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Bacillus subtilis var. niger spores were placed on the surfaces of test coupons manufactured from typical spacecraft materials (stainless steel, magnesium, titanium, and aluminum). These coupons were then juxtaposed at the inoculated surfaces and subjected to test pressures of 0, 1,000, 5,000, and 10,000 psi. Tests were conducted in ambient, nitrogen, and helium atmospheres. While under the test pressure condition, the spores were exposed to 125 C for intervals of 5, 10, 20, 50, or 80 min, with survivor data being subjected to a linear regression analysis that calculated decimal reduction times. Differences in the dry-heat resistance of the test organism resulting from pressure, atmosphere, and material were observed.
机译：枯草芽孢杆菌变种将尼日尔孢子放在由典型航天器材料（不锈钢，镁，钛和铝）制成的测试试样的表面上。然后将这些样片并置在接种表面，并经受0、1,000、5,000和10,000 psi的测试压力。测试在环境，氮气和氦气气氛中进行。在测试压力条件下，将孢子暴露于125 C，间隔为5、10、20、50或80分钟，对存活数据进行线性回归分析，计算得出十进制减少时间。观察到由压力，大气和材料导致的测试生物的耐干热性差异。

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