objective(s):this study was carried out to evaluate the effect of maternal morphine exposure during gestational and lactation period on pyramidal neurons of hippocampus in 18 and 32 day mice offspring. materials and methods: thirty female mice were randomly allocated into cases and controls. in case group, animals received morphinesulfate 10 mg/kg.body weight intraperitoneally during 7 days bef...

Efferent neurons of the first-order electrosensory processing center of the brain, the electrosensory lateral line lobe (ELL), receive electroreceptor afferent input as well as feedback inputs descending from higher centers. These ELL efferents, pyramidal cells, adaptively filter predictable patterns of sensory input while preserving sensitivity to novel stimuli. The filter mechanism involves i...

according to modern religious studies, religions are rooted in certain metaphorical representations, so they are metaphorical in nature. this article aims to show, first, how conceptual metaphors employ image schemas to make our language meaningful, and then to assert that image-schematic structure of religious expressions, by which religious metaphors conceptualize abstract meanings, is the ba...

alzheimer's disease (ad) is the most prevalent neurodegenerative disorder. it is characterized by formation of amyloid plaques and neurofibrillary tangles in the brain, degeneration of the cholinergic neurons and neural cell death. this study was aimed to investigate the effect of a triazine derivative, c16h12cl2n3s, on learning in an alzheimer's rat model. animals were divided into seven group...

The body-centered BaPdSn3 structure contains Sn atoms in tetrahedral and square-pyramidal five-coordinate sites, and Pd in square-pyramidal environments. The PdSn32three-dimensional lattice can be formally decom posed into first two-dimensional layers, then into a square Sn lattice with capping Sn and Pd atoms. This geometrical decom position also serves as a construction principle for building...

We propose a mechanism of photostructural changes in amorphous As2S3 ( a-As2S3) on the basis of ab initio molecular orbital calculations on clusters of atoms modeling the local structure of the amorphous system. We have found that trigonal AsS3 pyramidal units can be transformed into a fivefold coordinated As site having four As-S bonds and one As-As bond via a photoionization process. This pho...

background and objectives: study of deleterious effect of neurotoxins on the animals' brain is a fascinating research plan. in this project, the damage effect of colchicine on the hippocampal cornu ammonis 1 (ca1) was examined by the studying the hippocampal tissue. materials and methods: injections of colchicine (1-75 μg/rat, intra- hippocampal ca1) were performed in cannulated male wistar rat...

In this paper, we present a fast algorithm for perceptually based fractal image compression. The algorithm is based on a refinement of the fractal code from an initial coarse level of a pyramid. Assuming the block matching error is modeled as a first order Laplacian autoregressive process, we derive the threshold sequence for the objective function in each pyramidal level. Computational efficie...

Automatic analysis of medical cell images has been gaining more importance in pharmacology and toxicology research. Segmentation of cell bodies is the crucial step in their analysis since result of segmentation directly affect the following quantitative analysis steps. On the other hand, various smoothing representations of cell bodies are desired to calculate different parameters of the cells....