Shestopalov I P, Polikarpov N A, Breus T K
Biofizika. 1997 Jul-Aug;42(4):919-25.
In 1988-89, an experimental was carried out to study the effect of heliogeophysical factors on the biological activity of Staphylococcus aureus, one of the most widespread causative agents of infectious diseases in man and animals. For comparison, both individual heliogeophysical factors and interrelated phenomena in the system Sun-Earth arising from solar flashes were used. Two types of solar flashes were revealed. A near-annual cycle of changes in DNase activity of staphylococci in vitro was revealed, which correlates with the cycle of changes in electron concentration of layer F2 of the ionosphere. The correlation coefficient is 0,96%. It was found that the threshold of susceptibility of test-microorganisms to heliogeophysical influences is different in different years. There is an "amplitude window" of the influence whose upper boundary varies in different periods.
1988 - 1989年，开展了一项实验，以研究日地物理因素对金黄色葡萄球菌生物活性的影响，金黄色葡萄球菌是人和动物中最常见的传染病病原体之一。为作比较，使用了单个日地物理因素以及由太阳耀斑引起的日地系统中的相关现象。发现了两种类型的太阳耀斑。揭示了葡萄球菌体外脱氧核糖核酸酶（DNase）活性的近年度变化周期，该周期与电离层F2层电子浓度的变化周期相关。相关系数为0.96%。研究发现，受试微生物对日地物理影响的敏感阈值在不同年份有所不同。存在一个影响的“幅度窗口”，其上限在不同时期有所变化。
