An extension of the sensitivity analysis of linear programming, called parametric programming is used in determining optimal sawtimber logging system mix. The five logging systems under study are manual log-length, system, log-length processor and harvester systems, manual tree-length system and tree-length harvester system. In conditions where it is not exactly...
Half Polypay ewe lambs were bred to Suffolk, North Country
Cheviot and Hampshire rams to lamb at about one year of age.
Type of birth-rearing significantly affected mortality by 70
days of age and all weights of lambs from birth to weaning.
The mortality rate at 70 days of age...
Three chemicals SD 55446, SD 55447 and WL 84245 were found to
induce male sterility in cultivars of wheat or triticale. Both SD 55446
and SD 55447 when applied at a concentration of 0.896 kg/ha resulted
in 90% male sterility. However, SD 55447 caused female sterility at
the same concentration...
A series of momochloromethyl arenes and heteroarenes have been reacted
with triphenyltin hydride at 70° C. Under these radical conditions
the only observable reaction is reduction of the starting material to
arylmethane or heteroarylmethane. A significant range of relative rates
(a factor of eighty) has been found among the compounds...