نتایج جستجو برای: dendrite

تعداد نتایج: 4037  

CHIRAZI A., , MIRBAGHERI S.M.H., ,

A numerical model has been developed for the determination of liquid flow permeability through columnar dendrite during growth. The model is inclusive two stages, first numerical evolution of the dendrite shape during growth, and second numerical determination of the interdendritic liquid permeability. Simulation results shown which solute concentration by evolution of dendrite shape could resu...

In cast aluminum and its alloys, the microstructure varies under different solidification conditions, causing variations in their mechanical properties. These materials are basically produced in sand and metallic molds or through die casting, each of which is associated with a unique solidification regime with significantly different cooling rates so that the resulting microstructure strongly d...

Journal: :Neuron 2012
Michelle E. Kim Brikha R. Shrestha Richard Blazeski Carol A. Mason Wesley B. Grueber

Dendrites achieve characteristic spacing patterns during development to ensure appropriate coverage of territories. Mechanisms of dendrite positioning via repulsive dendrite-dendrite interactions are beginning to be elucidated, but the control, and importance, of dendrite positioning relative to their substrate is poorly understood. We found that dendritic branches of Drosophila dendritic arbor...

Journal: :physiology and pharmacology 0
hamid sepehry 1. department of physiology, faculty of medicine, golestan university of medical sciences farzaneh ganji department of biology, faculty of sciences, golestan university, gorgan

introduction: appropriate thyroid hormone (th) levels are essential during the critical period of brain development, which is associated with the growth of axons and dendrites and synapse formation. in rats, oral motor circuits begin to reach to their adult pattern around 3 weeks after birth, the period in which alteration from sucking to biting and chewing occurs (weaning time). trigeminal mot...

2015
Yang Yuan Eunju Seong Li Yuan Dipika Singh Jyothi Arikkath

Hippocampal pyramidal neurons have characteristic dendrite asymmetry, characterized by structurally and functionally distinct apical and basolateral dendrites. The ability of the neuron to generate and maintain dendrite asymmetry is vital, since synaptic inputs received are critically dependent on dendrite architecture. Little is known about the role of neuronal activity in guiding maintenance ...

2015
Peter Soba Chun Han Yi Zheng Daniel Perea Irene Miguel-Aliaga Lily Yeh Jan Yuh Nung Jan

Neurons develop highly stereotyped receptive fields by coordinated growth of their dendrites. Although cell surface cues play a major role in this process, few dendrite specific signals have been identified to date. We conducted an in vivo RNAi screen in Drosophila class IV dendritic arborization (C4da) neurons and identified the conserved Ret receptor, known to play a role in axon guidance, as...

2014
Jiae Lee Yun Peng Wen-Yang Lin Jay Z. Parrish

The directional flow of information in neurons depends on compartmentalization: dendrites receive inputs whereas axons transmit them. Axons and dendrites likewise contain structurally and functionally distinct subcompartments. Axon/dendrite compartmentalization can be attributed to neuronal polarization, but the developmental origin of subcompartments in axons and dendrites is less well underst...

2014
Jiae Lee Yun Peng Wen-Yang Lin Jay Z. Parrish

The directional flow of information in neurons depends on compartmentalization: dendrites receive inputs whereas axons transmit them. Axons and dendrites likewise contain structurally and functionally distinct subcompartments. Axon/dendrite compartmentalization can be attributed to neuronal polarization, but the developmental origin of subcompartments in axons and dendrites is less well underst...

Journal: :iranian journal of basic medical sciences 0
mohammad hosseini-sharifabad department of biology and anatomical sciences, shahid sadoughi university of medical sciences, yazd, iran morteza anvari department of biology and anatomical sciences, shahid sadoughi university of medical sciences, yazd, iran

objective(s):growing evidence indicates that extract of ginkgo biloba (egb) attenuates hippocampal-dependent memory deficit in aged individuals; however, very little is known about the effect of egb on the structure of hippocampus. therefore we examined the egb-induced morphological changes of the cornu ammonis (ca) region in aged rats. materials and methods: sixteen aged male wistar rats, 24 m...

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