Mass Production of Screw-Worms (Callitroga hominivorax) for the Eradication Program in the Southeastern States
From January 1958 to October 1959 slightly more than 3¾ billion pupae were produced, utilizing approximately 6⅓ million pounds of horse and whale meat, during the screw-worm eradication program conducted in the Southeastern States, by the procedures described. The number of grams of eggs obtained from the stock colony and the grams required to meet the weekly fly production quota; the amount of horse and whale meat utilized in producing the minimum of 50 million flies weekly required for field releases; and the number of pupae produced in relation to the number of flies released are shown graphically.
To work in a center hole fixrure problem of Italian S530 exists for the product scratch point,the linkage mechanism for the study,three-dimensional design software by Pro/Engineer 4.0 exercise of its movement mechanism simulation analysis gripper movement trajectories and parts scratched the real reasons for the further transformation of the structure of the fixture,fixture work solve the process of scratching the bottom of the problem,on the basis of kinematics simulation summarized Pro/E4.0 mechanical maintenance process in the modern areas of application