A white square arena (50 cm × 50 cm) positioned in a dimly lit room (light intensity: 151 lux) with an overhead video camera connected to a PC based tracking software (Ethovision 3.1, Noldus IT) was set up to continuously record activity of the animals.
The moment of photostimulation was determined by thresholding a photodiode signal positioned in a parallel light path to the stimulation light path.
Posed like radiant queens and proud generals, the artist's models are positioned in a powerful light.
Install the first tile in such a way that one of its corners positioned in a middle of the light fixture outlet.
Then, flowing oxygen carries the mercury vapour through absorbance cells positioned in the light path of a single wavelength atomic absorption spectrophotometer.
Plates of both species were placed at 4°C for 1 hr and returned to 20°C, in some instances positioned on a light box (Zentmyer and Ribeiro [1977]), to induce zoospore release.
The TV was positioned in front of a light grey fabric background (2.8 m wide × 2.9 m high) forming the rear wall of the room).
Position it in a light, sunny position.
All animals studied to date (including hamsters, rats, mice, sheep, and humans) exhibit a robust circadian rhythmicity for the onset of labor, though this timing does not correlate with either active or inactive periods or position in a light-dark cycle.
During growth period the Petri-dishes were placed between a camera (Marlin F1468) equipped with an infrared filter (IR MTD 52, Tokina Co Limited, Japan) positioned in front, and an infrared light source (Blacklight BL 1960, Advanced illumination) positioned behind the dishes (for set-up see also E. P. Spalding, http://phytomorph.wisc.edu/).
Venous blood samples were drawn in a sitting position with a light stasis into a tube containing clot activator (Vacuette, Greiner Bio-One, Frickenhausen, Germany) in visit 1 (non-fasting study) and (Venosafe, Terumo Europe, Leuven, Belgium) in visit 2 (true fasting study) for the lipid assays and into a fluoride-citrate tube (Venosafe) for the glucose assay.
