نتایج جستجو برای: animals and colored soils
تعداد نتایج: 16847711 فیلتر نتایج به سال:
Here the theory of finite-dimensional supermanifolds is generalized in two directions. First, we introduce infinite-dimensional locally isomorphic to arbitrary Banach (or, more generally, convex) superspaces. This achieved by considering as functors (equipped with some additional structure) from category Grassmann superalgebras into corresponding smooth manifolds (Banach or convex). Selected ex...
Abstract Nickel is a heavy metal distributed ubiquitously in nature. It accumulates in soil as a result of human activities, including mining and industries development. It may be poisonous to plants, humans, animals and microorganisms. The present study was implemented as a factorial experiment with a Randomized Complete Block Design (RCBD), of three replications in calcareous soils of Karaj...
The use of pesticides in modern agriculture is unavoidable because they are required to control weeds. Pesticides are poisonous; hence, they are dangerous if misused. Understanding the fate of pesticides will be useful to use them safely. Therefore, contaminations of water and soil resources could be avoided. The fates of pesticides in soils are influenced by their sorption, decomposition and m...
We introduce the concept of colored simultaneous geometric embeddings as a generalization of simultaneous graph embeddings with and without mapping. We show that there exists a universal pointset of size n for paths colored with two or three colors. We use these results to show that colored simultaneous geometric embeddings exist for: (1) a 2-colored tree together with any number of 2-colored p...
introduction: the persian squirrel (sciurus anomalus) is the only member of the sciuridae family found in the middle east. some people maintain them as pets, thus their referrals to veterinary hospitals has been increased recently. several morphological studies have been carried out mainly on the arch of aorta and its branches in common rodents, small mammals, and domestic animals but there are...
background and aims. the aim of this study was to evaluate the effect of different etching times on enamel color stability after immediate versus delayed exposure to colored artificial saliva (cas). materials and methods. human first premolars were divided into five groups of twenty. a colorimeter was used according to the cie system on the mid-buccal and mid-lingual surfaces to evaluate initia...
orumieh lake due to economic, tourism, microclimate effect, agricultural activities have an important role in the northwest of iran. this lake basin area is 52700 km2 with 102 islands, as known a familiar it as known one of the protected areas, with 186 species of birds, and animals. the water of lake is very salty (240 gr in winter and 260gr in summer) and fluctuation of lake water level threa...
Gypsum is the most common sulfate mineral in soils of arid and semi-arid regions. Two hundred million hectares of the earth’s surface and about 28 million hectares of Iranian arid soils are covered by gypsiferous soils. The studied soils consist of alluvial plane and eolian plains in northern Iran. Soils were classified as Haplocambids, Aquisalids and Endoaquepts. In this study, genesis, format...
Granuloma annulare(GA) is an inflammatory benign cutaneous disease of unknown etiology that may manifest different clinical features. The most common presentation or classic form of the disease is manifested as flesh colored, annular grouped papules, commonly involving the hands and feet. Various skin injuries and infections have been reported to trigger GA, including insect bites, warts,...
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