in this study, we focused on detailed studies on micromorphological and mineralogical properties of three types of peat and swamp, to compare these different ecological area together. to achieve this goal, samples from a highland peat swamp (ghaleh-ghafeh ps), a peat swamp forest (suteh psf) and a costal swamp (galougah cs) in golestan province, north of iran have been considered. these studies...

Integrating observations and experiments, we address the progressive effects of three alien species, mussels Mytilus galloprovincialis Semimytilus patagonicus , barnacle Balanus glandula on limpet species in South Africa. We describe four aspects: (1) Interactions among algae, Scutellastra granularis M. . (2) The influences B. S periwinkle Afrolittorina knysnaensis (3) Transformation zonation S...

Limpet teeth are striking examples of a biological fibrous nanocomposite consisting of goethite mineral within a polymeric chitin matrix. The mechanical function of limpet teeth is critically dependent on the efficient composite behaviour of goethite, formed as distinct discontinuous nanofibres, reinforcing the matrix. The mechanical properties of discrete volumes from a limpet tooth measured u...

abstract in recent years, the practice of using corporate websites to recruit job applicants has increased steadily. the aim of this paper is to review and analyze the e- recruitment in iran. in this article, we examine e-recruitment situation in premier 100 iranian organizations through websites content analysis. these top 100 organizations were introduced by the imi in 1390. this ranking is b...

The small acmaeid limpet Patelloida lat istr~gata Angas and clumps of macroalgae are found in midshore intertidal regions dominated by barnacles. Interactions between limpet and algae were investigated experimentally to determine the effect of the herbivore on microalgae (this term includes propagules of macroalgae) as well as on macroalgal plants, and also the influence of both forms of algae ...

Mature limpet oocytes arrested at the first metaphase (MI) of meiosis are activated by the stimulation of fertilizing sperm. The aim of the present study was to clarify the spatiotemporal property and mechanism of intracellular Ca2+ increase in limpet oocytes, which is a prerequisite signal for initiation of development at fertilization. In all of the five limpet species tested, the initial Ca2...