Fourteen multiparous Holstein cows were paired by stage of
lactation and previous years milk yield and 14 Holstein first-calf
heifers were paired by stage of lactation. One member of each pair
was assigned to a 24L:OD or a 18L:6D photoperiod for 16 wk during
winter 1981 (Experiment 1). A similar...
This paper deals with the thermal decompositon of
wood slabs under fire conditions. The partial differential
equation is solved numerically by the use of an implicit
finite difference method. Wood is treated as two
components, Lignin and Hemicellulose on one side, and
Cellulose on the other side. The chemical reactions...
The location of prune dwarf virus (PDV) and Prunus
necrotic ringspot virus (PNRSV) in pollen and seed
from infected and healthy sweet cherry trees pollinated
with infected pollen was investigated. Virus-like
particles were observed in the cytoplasm of pollen
grains from PDV-infected cherry trees using transmission
electron microscopy. No particles...