Random activity of the rat during food deprivation as a function of environmental conditions.

1960 ◽  
Vol 53 (3) ◽  
pp. 242-244 ◽  
Author(s):  
Robert Teghtsoonian ◽  
Byron A. Campbell
Keyword(s):  
Food Deprivation ◽  
Environmental Conditions ◽  
Random Activity

Relation of random activity to food deprivation.

1953 ◽  
Vol 46 (5) ◽  
pp. 320-322 ◽  
Author(s):  
Byron A. Campbell ◽  
Fred D. Sheffield
Keyword(s):  
Food Deprivation ◽  
Random Activity

Long-term observations on relationship between food and water ingestion in the dog

1959 ◽  
Vol 197 (2) ◽  
pp. 342-346 ◽  
Author(s):  
Louis J. Cizek
Keyword(s):  
Linear Relationship ◽  
Water Content ◽  
Food Deprivation ◽  
Water Intake ◽  
Environmental Conditions ◽  
Water Ingestion ◽  
The Mean ◽  
Day By Day ◽  
Marked Drop

Studies of the food-water intake relationship were made on 18 dogs over a period of 7 years. Single observations proved to be without value because of the considerable day-by-day variations that occur despite controlled diet and environmental conditions. The mean of multiple successive observations results in data which are consistent for the same animal over periods of at least 3–4 years. Such data reveal a quantitative linear relationship between food and water intakes provided the composition of the diet is maintained constant. Alterations in this relationship readily occur as a result of alterations in either the salt or water content of food. When the water content of the diet is changed, drinking is accurately readjusted so that the total intake for a given amount of food remains constant. Food deprivation results in a prompt and marked drop in daily drinking, the latter however, gradually increasing as deprivation continues. The immediate and delayed factors that might be concerned in this food-water relationship are discussed.

Vibration Isolator System for Electron Microscope

1990 ◽  
Vol 48 (1) ◽  
pp. 182-183
Author(s):  
K. Ohi ◽  
M. Mizuno ◽  
T. Kasai ◽  
Y. Ohkura ◽  
K. Mizuno ◽  
...  
Keyword(s):  
Electron Microscope ◽  
Magnetic Fields ◽  
Environmental Conditions ◽  
Vibration Isolator ◽  
Air Conditioners ◽  
Vibration Isolators ◽  
Large Size ◽  
Electron Microscopes

In recent years, with electron microscopes coming into wider use, their installation environments do not necessarily give their performance full play. Their environmental conditions include air-conditioners, magnetic fields, and vibrations. We report a jointly developed entirely new vibration isolator which is effective against the vibrations transmitted from the floor.Conventionally, large-sized vibration isolators which need the digging of a pit have been used. These vibration isolators, however, are large present problems of installation and maintenance because of their large-size.Thus, we intended to make a vibration isolator which1) eliminates the need for changing the installation room2) eliminates the need of maintenance and3) are compact in size and easily installable.

The influence of external conditions on sound pressure in the pistonphone at the infrasound frequency range

2020 ◽  
pp. 67-72
Author(s):  
A. V. Konkov ◽  
D. V. Golovin
Keyword(s):  
Environmental Conditions ◽  
Sound Pressure ◽  
Primary Method ◽  
Frequency Range ◽  
External Conditions ◽  
Numerical Estimations

The influence of environmental conditions on a sound pressure reproduced by the primary method in the measuring chambers of the Pistonphone in the frequency range from 1 mHz to 250 Hz is estimated. Numerical estimations of influence of environmental conditions on sound pressure in pistonphone measuring chambers are given and special requirements to system of maintenance of required external conditions are specified.

Sign in / Sign up

Export Citation Format

Share Document