Results 1 to 10 of about 95,061 (143)

Estimating the health consequences of flight attendant work: comparing flight attendant health to the general population in a cross-sectional study [PDF]

open access: yesBMC Public Health, 2018
Background Flight attendants are an understudied occupational group, despite undergoing a wide and unique range of adverse job-related exposures. In our study, we aimed to characterize the health profile of cabin crew relative to the U.S.
Eileen McNeely   +4 more
doaj   +4 more sources

Identification of a new stem cell population that generates Drosophila flight muscles

open access: yeseLife, 2014
How myoblast populations are regulated for the formation of muscles of different sizes is an essentially unanswered question. The large flight muscles of Drosophila develop from adult muscle progenitor (AMP) cells set-aside embryonically.
Rajesh D Gunage   +2 more
doaj   +4 more sources

Return-to-fly after flow diversion for unruptured paraclinoid aneurysms in military pilots [PDF]

open access: yesFrontiers in Neurology
ObjectiveAdvances in neuroimaging have increased detection of unruptured paraclinoid aneurysms among military pilots, a population subjected to unique environmental stressors that may elevate rupture risk.
Hui Zhang   +4 more
doaj   +2 more sources

DEMOGRAPHIC PROCESSES IN THE WESTERN PART OF THE ARMENIAN HIGHLAND (Late XV-XIV centuries BC) [PDF]

open access: yesBanber Arevelagitut'yan Instituti, 2021
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. First of these is fixed in the treaty signed between the Hittite king
Aram Kosyan
doaj   +1 more source

A population of descending neurons that regulates the flight motor of Drosophila [PDF]

open access: yesCurrent Biology, 2021
SummaryLike many insect species, Drosophila melanogaster are capable of maintaining a stable flight trajectory for periods lasting up to several hours(1, 2). Because aerodynamic torque is roughly proportional to the fifth power of wing length(3), even small asymmetries in wing size require the maintenance of subtle bilateral differences in flapping ...
Shigehiro Namiki   +6 more
openaire   +4 more sources

Flight Capability and the Low Temperature Threshold of a Chinese Field Population of the Fall Armyworm Spodoptera frugiperda

open access: yesInsects, 2022
The fall armyworm, Spodoptera frugiperda (J. E. Smith), is capable of long-distance migration; thus, evaluation of its flight capability is relevant to the design of monitoring and control strategies for this pest.
Hui Chen   +9 more
doaj   +1 more source

Population Biology of Lymphocytes: The Flight for Survival [PDF]

open access: yesAnnual Review of Immunology, 2000
In this essay we suggest that the primary goal of the cells of the immune system is to ensure their own growth and survival. In adults, in steady-state conditions, the number and distribution of lymphocyte populations is under homeostatic control. New lymphocytes that are continuously produced in primary and secondary lymphoid organs must compete with ...
Freitas, Antonio, Rocha, Benedita
openaire   +3 more sources

Population fluctuations and synchrony of grassland butterflies in relation to species traits. [PDF]

open access: yesPLoS ONE, 2013
Population fluctuations and synchrony influence population persistence; species with larger fluctuations and more synchronised population fluctuations face higher extinction risks.
Markus Franzén   +3 more
doaj   +1 more source

Survey of Lévy Flight-Based Metaheuristics for Optimization

open access: yesMathematics, 2022
Lévy flight is a random walk mechanism which can make large jumps at local locations with a high probability. The probability density distribution of Lévy flight was characterized by sharp peaks, asymmetry, and trailing.
Juan Li   +4 more
doaj   +1 more source

Hearing Health Risk in a Population of Aircraft Carrier Flight Deck Personnel [PDF]

open access: yesMilitary Medicine, 2004
This study evaluated the risk to hearing health associated with duty on the flight deck of a Nimitz class aircraft carrier. Descriptive data includes time-weighted average noise exposure and an evaluation of temporary threshold shift for a group of nonaviator flight deck personnel (FD), and a comparison of accrued permanent threshold shift among three ...
Glen W, Rovig   +2 more
openaire   +2 more sources

Home - About - Disclaimer - Privacy