the systematics, morphology, distribution, biology, economic importance and conservation of the perches of iran are described, the species are illustrated, and a bibliography on these fishes in iran is provided. there are three species, perca fluviatilis , sander lucioperca and s. marinus , found naturally in the caspian sea basin, with s. lucioperca translocated.

zn-co electrodeposits have attracted interest because of their significantly higher corrosion resistance in comparison with pure zinc. in this research the influence of bath temperature and electrolyte’s co 2+ concentration on the morphology and composition of the zn-co coatings, electrodeposited on an aisi1018 steel substrate from a weakly alkaline glycine solutions, has been studied. sem and ...

the systematics, morphology, distribution, biology, economic importance and conservation of the sticklebacks and pipefishes of iran are described, the species are illustrated, and a bibliography on these fishes is provided. there are two sticklebacks ( gasterosteus aculeatus , an exotic, and pungitius platygaster , a native) and one native pipefish ( syngnathus caspius ), the natives found in t...

the systematics, morphology, distribution, biology, economic importance and conservation of the milkfish ( chanos chanos ) of iran are described, the species is illustrated, and a bibliography on this fish in iran is provided. it is characterised by a compressed and oblong body, small, toothless and terminal mouth, non-protractile upper jaw, lateral pouches on the posterior part of the branchia...

abstract background: aloe vera (aloe barbadensis miller) is an evergreen perennial plant widely used in modern herbal practice and is often available in proprietary herbal preparations. objective: this study was designed to investigate the semen picture and spermatozoa morphology of west african dwarf (wad) bucks treated with aloe vera extract. materials and methods: twelve sexually matured wad...

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)...

four tylenchid species, namely, aglenchus agricola, malenchus exiguus, psilenchus curcumerus, and p. terextremus are reported from iran. the iranian population of a. agricola is characterized by 542-659 µm long body, 10-12 µm long stylet, excretory pore at 70-87 µm distance from anterior end, prominent lateral fields, with four lines, tail of 170-198 long, and rare males with 15-20 µm long spic...

We propose a method called analytical morphology for data ltering. The method was created on the basis of some ideas of rough set theory and mathematical morphology. Mathematical morphology makes an essential use of geometric structure of objects while the aim of our method is to provide tools for data ltering when there is no directly available geometric structure in the data set.

This paper discusses the use of recursive neighbourhoods in mathematical morphology. Its two notable applications are the recursive erosion/dilation, as well as the detection of foreground–background changes to be used in skeletonization. The benefit of the latter over the use of sub-cycles or an extension of the neighbourhood is emphasized. Two applications are presented that use the recursive...

El olivo (Olea europaea L.) presenta un complejo panorama varietal aún no caracterizado e identificado totalmente. En este trabajo se estudió material con incertidumbre identitaria: analizaron seis loci microsatélites de 13 accesiones relacionadas al cultivar Manzanilla la colección del INTA Catamarca y dos genotipos huertos comerciales departamento Cruz Eje, Córdoba. Para confirmar identidad c...