A method for measuring the spark-shower radiance of metals
when abraded on an abrasive grinding wheel was developed for
evaluating their sparking tendency. One hundred metals were tested
and rated relative to commercially pure iron. The radiance was
measured in units of energy per solid angle per area of the...
The 865 ewe production records taken from three lamb crops, were
analyzed to study breed effects, heterosis, environmental effects and
interactions between them, and breed and heterosis x environment interaction
effects on ewe production traits. In each of two environments,
approximately 144 ewes were mated in a three breed reciprocal...
The erratic behavior of the room temperature yield strength of
high purity commercial tantalum sheet was studied. Critical factors
in the production process were postulated and then investigated to
determine their effects on strength properties. Chemical composition
was found to be the most important factor contributing to the strength;
thermomechanical...
Genetic and environmental factors affecting age of first estrus,
wool production, reproduction and lamb production were examined in
eight groups of crossbred ewe lambs from two birth years. The 399
ewe lambs whose first year production was analyzed were from eight
crossbred groups resulting from mating North Country Cheviot, Dorset,...
First order prism slip in yttrium single crystals containing a total interstitial impurity content of about 200 wt ppm is almost entirely stage II deformation with a work hardening rate θ/μ of 2·10⁻ ³ . The athermal temperature is about 300°K. Below this temperature an interstitial mechanism is rate controlling...
One hundred two mature blackface crossbred ewes were randomly
divided into three equal groups to examine the effects of feeding
management during mating on blood chemistry, weight change and
subsequent reproductive performance.
Group I was kept in drylot from 17 days before through 17 days
after the start of mating....
The location of a lactating mouse in a cage of two compartments,
a nest area and a larger wire cage, was continuously recorded for ten
days after parturition. Three experimental groups within each of two
inbred lines, A/J and C57BL/6J, were tested: first generation,
unfostered; second generation, unfostered; and second...
The study involved three separate research efforts
in which 10 Holstein calves and 85 purebred Hampshire and
Suffolk ewe and ram lambs were employed. The objectives of
the experiments were to characterize appetite, describe its
inheritance and evaluate its associations with animal
performance.
In the calf experiment, appetite was determined...