[1] In arctic tundra, cryoturbation resulting from frost heave, cracking, and other cryogenic processes produces patterned ground such as nonsorted circles, stripes, nonsorted polygons, and earth hummocks. We studied cryogenic structures and morphological properties of soils associated with patterned-ground features along a bioclimate gradient in Arctic Alaska and Canada from north (subzone A) ...

Cell death is discriminated into two main forms: apoptosis and necrosis. In contrast to necrosis, apoptosis is a regulated, energy-dependent form of cell death leading to phagocytosis of cellular remnants by neighboring cells. Characteristic morphological features of these two forms of cell death will be discussed and correlated to underlying molecular mechanisms.

in present study, two species of hyphomycetes fungi including, cephaliophora tropica (in soil), and monascus pilosus (on corn silage) are reported for the first time to iranian mycobiota. descriptions of these species have been provided with morphological characteristics and its rdna sequence analyses.in present study, two species of hyphomycetes fungi including, cephaliophora tropica (in soil)...

Cadmium as a heavy metal is also considered as a serious threat for the environment. This element is accumulated in soil through industrial processes as well as phosphate fertilizers and aggregates into the food chain. This study was conducted in order to investigate the different levels of cadmium effects on growth features of rapeseed (Brassica napus L.) plants. Root and shoot weight and heig...

Background and Purpose: Soil is the main habitat of saprophytic and pathogenic fungi. Mucormycetes are one of the most parts of soil fungi and certain members are among opportunistic fungi and can cause systemic fungal infections in immunocompromised patients. The majority of human and animal infections are caused by members of the genera Rhizopus, Mucor, Rhizomucor, Lichtheimia (Absidia), Cunn...

The objective of the study was to evaluate structural changes in margin gastroduodenal ulcers complicated by perforation, bleeding or penetration terms features ulcer healing. Methods and materials . Histological IHC studies were performed on 25 patients main group with perforated 23 control chronic recurrent penetration. sections stained hematoxylin eosin, Van Gieson's picrofuchsin. Immunohist...