The halogen gas inside a halogen lamp causes the evaporated tungsten to redeposit on the filament. This process, along with high pressure inside the capsule, slows down deterioration of the filament, improves lumen maintenance and extends the lampâs service life.
The mean heart rate as obtained in this study (246 beats min â1, with a range of 207â314 beats min â1) is within the range given by several authors in chicken embryos. In a previous study () we reported heart rate values ranging between 250 and 270 beats min â1 on days 19 and 20 of incubation.
If a stethoscope is available, listen to the heart on the left side of the horse's chest, just behind the elbow. Each sound of the heart is considered one beat. The normal heart rate for an adult horse is about 32 to 36 beats per minute. Foal heart rates vary depending on age. Newborn foals have a heart rate of between 80 to 100 beats per minute. Foals which are a few weeks to a few months of age will have heart rates of 60 to 80 beats per minute. Respiration