abstract persian walnut is one of the most important nut crops in iran. now the majority of orchards are seedling with a great diversity. for establishing uniform orchards and increasing the quantity and quality of yield, patch budding as the most suitable propagation methods, have still technical and practical problems in the country. in spite of high percent of primary success in patch buddin...

background: ketamine is a commonly used intravenous anesthetic which produces dissociation anesthesia, analgesia, and amnesia. the mechanism of ketamine-induced synaptic inhibition in high-level cortical areas is still unknown. we aimed to elucidate the effects of different concentrations of ketamine on the glutamatergic synaptic transmission of the neurons in the primary somatosensory cortex b...

this study aims to undertake a statistical study to evaluate the accuracy of nine models that have been previously proposed for estimating the ultimate resistance of plate girders subjected to patch loading. for each model, mean errors and standard errors, as well as the probability of underestimating or overestimating patch load resistance, are estimated and the resultant values are compared o...

Bioerosion of branched corals was assessed in a fringing reef (Playa Blanca) and a patch reef (Gorgonilla) of Gorgona Island in the tropical eastern Pacific. Cylinder-shaped experimental units (EUs), made from branches of Pocillopora spp., were set 50 cm above the sea bottom for 6, 12 and 18 mo in Playa Blanca (4 zones: Back Reef, Reef-Flat Crest, Reef Front and Reef Slope) and the Gorgonilla p...

Interest in developmental interactions involving the notochord and perinotochordal sheath led to a comparative investigation of these structures in three mouse mutants. Alcian blue or periodic acid-Schiff staining of 9 1/2-13 days' gestational age embryos revealed a supernumerary notochordal-like mass of cells or a deflected notochord in association with duplication of the neural tube in mice o...

Airborne skin exposure to allergens and irritants may cause dermatitis. There are few methods for assessing skin exposure to airborne particles. We have modified and tested a vacuuming sampler for removing particles from the skin. The sampler was compared with two other skin and surface exposure sampling techniques. These were based on surrogate skin (a patch sampler-adhesive tape on an optical...