نتایج جستجو برای: darreh
تعداد نتایج: 60 فیلتر نتایج به سال:
this study was conducted in halgheh darreh waste disposal site in karaj in order to determine the concentration of ni and pb in halimocnemis pilifera and in region’s soil. three 50*50 m plots in the direction of the prevailing wind were selected. the first plot was close to the leachate ponds and the next two plots were located at 500 and 1000 m from the first plot, respectively. ten random sam...
The northern fringes of the Iranian Central Desert (NICD) is a long corridor created due to the proximity of the Alborz Mountains to the north and the Central Desert to the south. For the first time, one of the present authors (HVN) highlighted the importance of the NICD as one of the routes for the dispersal of human populations from Africa to East Asia during Pleistocene epoch. In recent year...
Introduction: As the main source of water and life for humans and other creatures, rivers may sometimes bring about destruction and irreparable damage. Therefore, it is necessary to study the hydraulic properties of the flow and the riverbed’s area to set a safe zone for human activities around it. On the other hand, constructions built along the river’s route such as bridges, weirs, superstruc...
BACKGROUND: Drought stress is one of the most critical factors in the reduction of yield among plant growth factors. Salicylic acid is a regulator that plays a vital role in the physiological processes of the plant. Gibberellin is one of the plant growth-regulating hormones that have different effects on the growth and development of many plants during growth stages. <str...
introduction the sar cheshmeh copper deposit and indications of other deposits are located in the dehaj-sarduieh belt in the kerman region (khadem and nedimovic, 1973). this belt is one of the most important provinces of cu mineralization in iran, with approximately 300 cu deposits and prospects, includingtwenty of the porphyry copper type (ghorbani, 2013). this belt, 300 km in length and 30–45...
Human being has always endeavored to keep a balance between his needs, demands, latent and active facilities in the environment since millennia. Watermill has, as an environmental hydraulic structure, played a vital role in the man’s socio-economic life even in arid areas where it was temporarily constructed for being used in certain seasons and or specific measures were devised to supply water...
Human being has always endeavored to keep a balance between his needs, demands, latent and active facilities in the environment since millennia. Watermill has, as an environmental hydraulic structure, played a vital role in the man’s socio-economic life even in arid areas where it was temporarily constructed for being used in certain seasons and or specific measures were devised to supply water...
introduction agates are presumed as a kind of precious stone that could be formed in magmatic, metamorphic and even sedimentary environment. mechanism for agate formation is not clear and is produced in laboratories. some hot springs and geothermal activity or white chimneys in the ocean floor, have some deposits like chalcedony but never produce agate. agate formation temperature varies betwee...
introduction two main principal aspects for the genesis of porphyry copper deposits have been determined. the first genetic model concerns the petrologic and geochemical processes and the other relates the genesis to crustal deformation and geodynamic conditions (kesler, 1997). recent studies (e.g., padilla garza et al., 2001) show that the generation and emplacement of porphyry copper deposits...
•Embryo response to excess glucose varies with developmental stages•FFA/TAG promotes fat use, impacting embryo metabolism•Excess or FFA/TAG elicits distinct gene expression responses•Nutrient sources influence appetite during development Zebrafish embryos use their yolk sac reserve as the sole nutrient source embryogenesis. The two main forms of energy fuel can be found in form fat. were expose...
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