this study was performed to determine the effect of copper on growth performance, blood metabolites and claw health in young holstein bulls in a humid area in north of iran. one hundred and two young holstein bulls (initial body weight= 377.3±17.1 kg) were randomly allocated to two treatments in a completely randomized design for 56 days. the treatment groups received: (1) the basal diet of no ...

We give an O(n) algorithm to find a minimum clique cover of a (bull, C4)-free graph, or equivalently, a minimum colouring of a (bull, 2K2)-free graph, where n is the number of vertices of the graphs.

In the course of screening of plant extracts for anti-influenza viral activity, 50% aqueous methanolic extract exhibited antiviral activity against influenza virus A. Bio-assay guided fractionation of the extract led to the indication of the presence of condensed tannins as the active constituents. This was confirmed by chemical tests as well as by thin layer chromatographic comparison with kno...

approved: Redacted for privacy Philip D. Whanger Following initial intramuscular injections of 500 pCi 75 Se, semen was collected periodically by electroejaculation over a 63 day period from a selenium-deficient and a selenium-adequate ram. Ten and three days prior to necropsy, second and third injections of 500 11Ci were given. Testes, accessory glands, and semen were obtained from a bull inje...

provide information ranging from the morphology and uses of plant species to the history of plant exploration and the European discovery of Africa. The RBG Kew has contributed historical material, including maps and papers from David Livingstone’s South East Africa Expedition Papers and over 2,000 sheets of Africa-related material from the Director’s Correspondence covering early botanical expl...

images inspired by the remarkable twists and turns in the shape of pollen grains from different plant species collected by the artist from specimens growing in the gardens' cornfield last summer. Kessler was awarded a three-year grant to work with Madeline Harley at the Micromorphology Unit at Kew. The remarkable shapes of pollen grains reveal important diagnostic features of plants used by sci...