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Extraordinary flight performance of orchid bees (Apidae: Euglossini) hovering in heliox (80% He/20% O2)
- Biology, Medicine
- The Journal of experimental biology
- 1 April 1995
Limits to insect flight performance are difficult to evaluate because the full range of aerodynamic capabilities cannot be easily elicited or controlled. Invasive experimental manipulations, such as… Expand
FLIGHT PHYSIOLOGY OF NEOTROPICAL BUTTERFLIES: ALLOMETRY OF AIRSPEEDS DURING NATURAL FREE FLIGHT
Airspeed measurements during natural free flight were made on a total of 270 neotropical butterflies representing 62 species. Morphological data were obtained from the same individuals for which… Expand
Serum Inhibins A and B fall differentially as FSH rises in perimenopausal women
Serum FSH levels rise with increasing age in normal women, particularly as they enter the menopausal transition and progress to the postmenopausal state. The contributions of decreasing levels of… Expand
Animal flight mechanics in physically variable gas mixtures
Empirical studies of animal flight performance have generally been implemented within the contemporary atmosphere. Experimental alteration of the physical composition of gas mixtures, however,… Expand
Teacher perspectives about lesson study in secondary school departments: a collaborative vehicle for professional learning and practice development
Two departments in a secondary school in England participated in ‘lesson study’ projects over a five-month period to explore its usefulness as a vehicle for professional development. Through a cycle… Expand
Do neotropical migrant butterflies navigate using a solar compass?
Many tropical butterfly species are well-known for their migratory behaviour. Although these insects can maintain a constant direction throughout the day, the physiological mechanisms of orientation… Expand
Quantum inductance within linear response theory.
We derive the Landauer-Buttiker formula for admittance from the linear response theory. The result is applied to a system which displays a resonance, and it is shown that the admittance has an… Expand
Modification of the neurotoxic effects of methyl mercury by selenium
This study with cats not only indicates that dietary selenium is effective in the reduction of methyl mercury toxicity, but also suggests that the mercury/selenium ratio in food or animal tissues,… Expand
Antimicrobials: better use, better drugs, or both?