Sentences with phrase «different densities during»

Not exact matches

Specifically, the authors examined satellite images of the island with a high density of bears, during the ice - free summer and compared the images to aerial and ground surveys collected on different dates.

Unlike in previous studies, the study behind this new publication looked at the regional density shifts of species during different decades, starting from the 1970s.

The team looked at an outer surface protein of B. burgdorferi found in ticks — which can give clues about the vertebrate host — as well as the probabilities that different host species transmit the microbe during a tick bite, the number of larvae feeding on the animals, and population densities.

The quality of the data set is enhanced by the possibility to combine the information from two different detectors: the particle density at the ground is measured with a surface array of water Cherenkov detectors whereas the longitudinal development of the air showers is observed with fluorescence telescopes during dark clear nights.

While osteoporosis can develop in both men and women at different ages, it most frequently affects older women who have gone through menopause (estrogen levels drop during menopause, and experts believe the hormone helps maintain bone density).