hyperspectral sensors provide a large number of spectral bands. this massive and complex data structure of hyperspectral images presents a challenge to traditional data processing techniques. therefore, reducing the dimensionality of hyperspectral images without losing important information is a very important issue for the remote sensing community. we propose to use overlap-based feature weigh...

conclusions these results revealed that cirrhosis produce prolonged qt interval and sour cherry extract has an ameliorating effect on qt prolongation probably via its antiarrhythmic property. results results were analyzed by using student t-test and one-way anova. p < 0.05 was considered as significant level. the qt interval was calculated using the bazettʼs formula and corrected qt (qtc) was o...

o b jective: to evaluate the accuracy of surgeons’ intraoperative diagnosis in open appendectomy and compare it with the histopathology examination results afterwards. m ethods: this was a cross-sectional retrospective study accomplished in namazee hospital affiliated with shiraz university of medical sciences, in a one-year period from 2007 to 2008. medical charts of all the patients who were ...

A 49-year-old woman with generalised lichen sclerosus et atrophicus and morphoea developed bilateral Brown's syndrome. Some of the skin lesions were in the vicinity of the trochlea. A characteristic feature of morphoea is subcutaneous fibrosis, so we postulate that the cause of the Brown's syndrome was mechanical tethering of the superior oblique tendon by deep subdermal fibrosis. Histopatholog...

Glioblastomas, (grade 4 astrocytomas), are aggressive primary brain tumors characterized by histopathological heterogeneity. High-resolution sequencing technologies have shown that these tumors also feature significant inter-tumoral molecular heterogeneity. Molecular subtyping of these tumors has revealed several predictive and prognostic biomarkers. However, intra-tumoral heterogeneity may und...

Take-home messages: • A broad range of cardiovascular conditions affect the myocardium. • The presence and extent to which the myocardium is affected can be estimated with magnetic resonance-based tissue characterization techniques. • The extent to which these techniques have been validated varies; the certainty with which a cardiac magnetic resonance (CMR)-based tissue characteristic is assign...

Alzheimer’s disease (AD) is the leading cause of dementia in the elderly and characterized by progressive memory loss, behavioral deficits and significant personality alterations [1,2]. The histopathological hallmarks of AD include Aβ plaques, neurofibrillary tangles, neuronal death and synapse loss. One significant feature of Aβ accumulation is the strong reactive gliosis associated with the A...

the research was accomplished in order to study behavioral and histopathological effects of copper on rutilus rutilus caspicus under experimental condition. the study was performed using water static method during 96 hours. 15 fish with averaged weight 2?0.5 g in weight were encountered to different concentrations (0, 0.1, 0.2, 0.3, 0.4 mg/l) of copper. a group of fish was considered as control...

A one-year-old girl with a giant cell fibroblastoma (GCF) of the skin in the left arm is described. The tumor presented as a small, asymptomatic, subcutaneous mass that enlarged relatively slowly. GCF is a rare mesenchymal tumor occurring predominantly in young children. Its unique histopathological feature can lead to a misdiagnosis as sarcoma very easily. We review briefly the clinical and pa...

2,3,7,8-tetrachlorodibenzo-p-dioxin (tcdd) is a by-product o f t he trichlorophenol (herbicide) production and is also produced through a variety of combustion processes. it appears that tcdd is a ubiquitous chemical, particularly in industrialised countries, and the liver is the target organ of its toxicity. the prominent hepatotoxic effect of tcdd is progressive centrilobular necrosis. the is...