نتایج جستجو برای: altitude region
تعداد نتایج: 556844 فیلتر نتایج به سال:
background: measurement of background radiation is very important from different points of view especially for human health. the aim of this survey was focused on determining the current background radiation in one of the highest altitude regions ( zagros mountains ), chaharmahal and bakhtiari province, in the south west of iran . materials and methods: the outdoors-environmental monitoring exp...
ATP synthase 8 (ATP8) and ATPase synthase 6 (ATP6) play an important role in mitochondrial ATPase assembly. Mutations in either of these units could affect the ATP processing and the respiration chain in mitochondria. To find out if there were differences in gene diversity between Tibetan yaks and domestic cattle, we sequenced the ATP8 and ATP6 genes in 66 Tibetan yaks and 81 domestic cattle. W...
In humans and other species, long-term hypoxia (LTH) during pregnancy can lead to intrauterine growth restriction with reduced body/brain weight, dysregulation of cerebral blood flow (CBF), and other problems. To identify the signal transduction pathways and critical molecules, which may be involved in acclimatization to high altitude LTH, we conducted microarray with advanced bioinformatic ana...
The SIERRA nightside auroral sounding rocket made observations of the origins of ion upflow, at topside F-region altitudes (below 700 km), comparatively large topside plasma densities (above 20 000/cc), and low energies (10 eV). Upflowing ions with bulk velocities up to 2 km/s are seen in conjunction with the poleward edge of a nightside substorm arc. The upflow is limited within the poleward e...
BACKGROUND Sherpas, a highlander population living in Khumbu region of Nepal, are well known for their superior climbing ability in Himalayas. However, the genetic basis of their adaptation to high-altitude environments remains elusive. METHODS We collected DNA samples of 582 Sherpas from Nepal and Tibetan Autonomous Region of China, and we measured their hemoglobin levels and degrees of bloo...
Temporal and spatial spectral analysis techniques were applied to lidar data collected over a period of 18 months above the Rocky Mountain region at an altitude range from 45 to 70 km by a Rayleigh lidar system located in Logan, Utah (41.7øN, 111.8øW). Examination of the averaged temporal frequency F(co) and vertical wavenumber F(m) spectra showed spectral slope values of1.49 + 0.03 and -2.3 + ...
[1] Fe/Rayleigh lidar measurements are combined with the high-altitude balloonsonde data and used to characterize the seasonal variations of atmospheric temperature at South Pole from the surface (2.835 km) to 110 km altitude. Twelve-month oscillations, associated with solar UV absorption by ozone, dominate the seasonal variations of temperature throughout the stratosphere and lower mesosphere ...
Nepeta is one of the biggest geniuses of Lamiaceae family which N. pungens, N. binaludensis, N. isphanica, N. pogonosperma and N. bracteata has been used traditionally in Iran. Nepeta pogonesperma is one of the endemic Nepeta species in Alamut region (Qazvin Province ). So in this research the aerial parts of Nepeta pogonesperma in full flowering stage were collected from Kheshchal altitudes of...
The collision on February 10, 2009 between the Iridium 33 satellite and the defunct Cosmos 2251 satellite at an altitude of 470 miles (770 km) significantly increases the amount of space debris in the region of space that is already the most crowded and has the greatest risk of collisions between orbiting objects. The debris cloud created by this collision is like a shotgun blast that threatens...
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