Untersuchungen zum biologischen Verhalten von Radio Technetium, Radio Indium und Radio Gallium während der Lakation.

The biological behavior of 67Ga, 113In, 99Tc(m) in blood, mammary glands, femur (mother animals) and in the whole body (young animals) was tested with 105 suckling Wistar rats with an average of 8 neonatals each, in comparison with non suckling control animals. +Ga accumulated progressively to a considerable extent in the neonatals between 3 and 24 hr p.i. via mother's milk. The mammary glands of suckling animals contained 67Ga in four times higher concentrations. The intraossary 67Ga accumulation of suckling animals is low ('decorporation effect' of the lactation). The transfer of +In via mother's milk is minimal, although twice as much indium is concentrated in the mammary glands as in control animals. A statistically significant difference of the retention behavior of +In in the bone structure of suckling and non suckling animals does not exist. The retention curve of +Tc in neonatals has a biphasal form (rise up to 6 hr p.i., drop up to 18 hr, renewed rise). The Tc kinetics in the mammary glands show a parallel pattern. The differential kinetics of the radionuclides are discussed

Effects of megasphaera elsdenii on ruminal pH, ruminal concentrations of organic acids, and bacterial genomes following a grain challenge

Upon arrival in feedlots, cattle normally must be adapted to high-concentrate diets. The microbial population in the rumen of incoming cattle normally is suited to digestion of forages, and when cattle are transitioned onto concentrate diets, opportunistic bacteria that produce lactic acid can proliferate rapidly, leading to excesses of lactic acid in the rumen. High levels of lactic acid in the rumen may cause mild to severe acidosis. Megasphaera elsdenii is a lactate-utilizing bacterium that normally is present in rumens of cattle that have been adapted to high-grain diets, but numbers of the organism are relatively low during the step-up phase. Increasing the numbers of lactate-utilizing bacteria in newly arrived cattle by orally dosing with M. elsdenii may be a useful means of reducing the risk of ruminal acidosis in feedlot cattle. Our objectives were to evaluate ruminal parameters and determine efficacy of increasing ruminal populations of lactateutilizing bacteria in cattle following an abrupt diet change and administration of 10 mL (low dose), 100 mL (medium dose), or 1000 mL (high dose) of a culture containing 1.62 × 108 CFU/mL of live M. elsdenii compared with a control group given a placebo without live Megasphaera

Flavour Physics of Leptons and Dipole Moments.

This chapter of the report of the ``Flavour in the era of the LHC'' Workshop discusses the theoretical, phenomenological and experimental issues related to flavour phenomena in the charged lepton sector and in flavour-conserving CP-violating processes. We review the current experimental limits and the main theoretical models for the flavour structure of fundamental particles. We analyze the phenomenological consequences of the available data, setting constraints on explicit models beyond the Standard Model, presenting benchmarks for the discovery potential of forthcoming measurements both at the LHC and at low energy, and exploring options for possible future experiments.Comment: Report of Working Group 3 of the CERN Workshop ``Flavour in the era of the LHC'', Geneva, Switzerland, November 2005 -- March 200