Compared to the endoreversible case, the optimum hot-to cold-end unit cost ratio does not result in equal division of heat exchanger conductances and shows variation in the cycle thermal efficiency despite a constant fluid temperature ratio.
We suspect that the lower predictive capacity among females may be due to nonmodeled variability of HOMA-IR caused by variations in the estrous cycle among females; it is known that insulin production varies throughout the estrous cycle.
Due to variations in the menstrual cycle between participants, not all women were measured during the same phase of the menstrual cycle (pre and post), and some variability in water weight gain with cycle phase should be considered.
In humans, there are also seasonal variations in the sleep cycle as well as in levels of the stress hormone cortisol, teosterone, vitamin D and cholesterol.
Some cast doubt on the link between CFCs and the ozone hold, and argue that it may be linked to variations in the solar cycle.Remember past scientific predictions of doom the global food shortage, the limits to growth imposed by non-renewable fossil fuels and minerals, the danger of a new ice age.
The distribution of the reference values reveals the maximum and typical variations in the life cycle carbon emission factors of PV systems.
Solar scientists David Hathaway of NASA's Marshall Space Flight Center in Huntsville, Alabama, and Lisa Rightmire of the University of Memphis in Tennessee set out to determine how meridional flow correlates with variations in the sunspot cycle.
High-LET radiation response in tissue is less influenced by oxygenation and less sensitive to variations in the cell cycle and DNA repair.
The variation in frequency of proliferation and apoptosis relative to variations in the menstrual cycle as well as the variation in frequency of proliferation and apoptosis relative to the progesterone levels were measured with linear regression models and fourth-degree polynomial curves (Polnom Program; University of Manchester, Manchester, UK) as indicated.
A study has further reported that genetic variations in the methionine cycle affect heart rate variability which suggests the role of methylation in cardiac autonomic dysfunction and lower intake of nutritional methyl supplement is associated with the negative effect of PM2.5 on HRV [ 24].
