Results 21 to 30 of about 98,763 (259)

Flight distance and population trends in European breeding birds [PDF]

Behavioral Ecology, 2008
Flight distance reflects the risk that individual animals are willing to take when approached by a potential predator, as shown by a negative relationship between susceptibility to predation and flight distance. Species with long flight distances should more often suffer from disruption of their activities by potential predators, including humans, than
openaire   +2 more sources

Demographic Processes in the Western Part of the Armenian Highland (Late XV-XIV Centuries BC)

Banber Arevelagitut'yan Instituti
The cuneiform Hittite texts of the XV-XIV centuries BC contain important information dealing with at least two different population movements happened along the Upper Euphrates region.
Aram Kosyan
doaj   +6 more sources

Flight Mill Experiments and Computer Simulations Indicate Islands Recruit More Capable Flyers of Moths

Frontiers in Ecology and Evolution, 2021
Understanding the traits related to species colonization and invasion, is a key question for both pest management and evolution. One of the key components is flight, which has been measured for a number of insect species through radar and tethered flight
Yu-xuan Zheng, Ying Wang, Bo-ya Dai, Zheng Li, Qi-run Huo, Jian-xin Cui, Hao Liu, Xin-hai Li, Alice C. Hughes, Ai-bing Zhang   +9 more
doaj   +1 more source

Flight Muscle and Wing Mechanical Properties are Involved in Flightlessness of the Domestic Silkmoth, Bombyx mori

Insects, 2020
Flight loss has occurred in many winged insect taxa. The flightless silkmoth Bombyx mori, is domesticated from the wild silkmoth, Bombyx mandarina, which can fly.
Kunpeng Lu, Shubo Liang, Minjin Han, Chunman Wu, Jiangbo Song, Chunlin Li, Songyuan Wu, Songzhen He, Jianyu Ren, Hai Hu, Jianghong Shen, Xiaoling Tong, Fangyin Dai   +12 more
doaj   +1 more source

Post-Spaceflight (STS-135) Mouse Splenocytes Demonstrate Altered Activation Properties and Surface Molecule Expression. [PDF]

PLoS ONE, 2015
Alterations in immune function have been documented during or post-spaceflight and in ground based models of microgravity. Identification of immune parameters that are dysregulated during spaceflight is an important step in mitigating crew health risks ...
Shen-An Hwang, Brian Crucian, Clarence Sams, Jeffrey K Actor   +3 more
doaj   +1 more source

Flight from the land? Migration flows of the rural population of the Netherlands, 1850-1940

Espace populations sociétés, 2014
In this article, we aim to analyze the residential options of the rural population of the Netherlands in the late nineteenth and early twentieth century from the perspective of push factors operating at different levels: the household, the municipality and the region. We contrast the decision to stay with moving in several ways: within the municipality
Kok, J., Mandemakers, K., Mönkediek, B.
openaire   +8 more sources

Optimal search in interacting populations: Gaussian jumps versus Lévy flights [PDF]

Physical Review E, 2014
9 pages, 6 ...
Martínez-García, Ricardo, Calabrese, Justin M., López, Cristóbal   +2 more
openaire   +5 more sources

Are flight staffs at higher risk for breast cancer? [PDF]

فصلنامه ابن سینا, 2017
Background: Several studies have shown that there is an increased risk of breast cancer among flight attendants. However, the results of epidemiological studies have not been consistent with this issue.
K Ziyari, O Rahmani, R Eslami
doaj  

Associations between respiratory illnesses and secondhand smoke exposure in flight attendants: A cross-sectional analysis of the Flight Attendant Medical Research Institute Survey

Environmental Health, 2011
Background Secondhand tobacco smoke (SHS) is associated with increased risk of respiratory illness, cancer, and cardiovascular disease. Prior to smoking bans on airlines in the late 1980s, flight attendants were exposed to a significant amount of SHS. In
Redberg Rita F, Haight Thaddeus J, Beatty Alexis L   +2 more
doaj   +1 more source

Numerical characterization of astronaut CaOx renal stone incidence rates to quantify in-flight and post-flight relative risk

npj Microgravity, 2022
Changes in urine chemistry potentially alter the risk of renal stone formation in astronauts. Quantifying spaceflight renal stone incidence risk compared to pre-flight levels remains a significant challenge for assessing the appropriate vehicle, mission,
Debra A. Goodenow-Messman, Suleyman A. Gokoglu, Mohammad Kassemi, Jerry G. Myers   +3 more
doaj   +1 more source