ECONOMIC EVALUATION OF A BREEDING PROGRAMME FOR SETTING UP TWO HIGH PERFORMANCES BEE LINES
This study aimed to evaluate costs, incomes and financial results related to the creation of two Apis Mellifica Carpatica lines, based on a specific Breeding Programme within a closed population. The two beelines have been carefully selected for the bee populations living in two areas of Romania: North Moldavia and South Muntenia. A new selection technology is set up in order to produce high performance queen bees, well adapted to the environmental conditions mainly to picking. Genetic gain will be get by selling the mated selected queens belonging to the two lines to various beekeepers interested to obtain more and high quality bee products.
Laboratory measurement of honey production in the honeybee. 3. Pupal weight of the worker.
SummaryThe relationship between the pupal weight of workers and honey production by their colony was examined for 14 honeybee colonies headed by instrumentally inseminated queens. The mean weight of pink-eyed pupae and colony weight gain during a 19-week test period were significantly correlated (r = 0·680, P<0·01). An analysis of variance on individual pupal weights from progeny of groups of 7 and 9 queens revealed highly significant differences between source colonies (P<0·001). The results support the feasibility of selection of honeybees for increased colony honey production based on the pupal weight of the worker.
Investigation of scatter radiation of non-circular X-ray scan trajectories
Modern interventional X-ray devices are highly maneuverable and allow complex 3D imaging trajectories. New scan trajectories enable not only optimized object sampling but also introduce new approaches for dynamic 3D imaging. In this paper, we investigated the scatter radiation of two different scan trajectories. The scatter radiation was sampled by a rail setup with dosimeters at defined positions. After data analysis, contour maps were generated which show for four exemplary heights the scatter radiation distribution. The alternative scan trajectory showed smaller dose exposures at heights correlated to upper torso and head areas of a model physician. Keywords—Image acquisition, alternative scan trajectory, circular tomosynthesis, scatter radiation distribution