in a semiarid region of central iran, effects of parent materials, physiography and landscape position, land use, andmanagement practices on association of organic carbon with secondary (aggregates) particles and aggregate stability canhave important consequences in terms of carbon sequestration and budgeting, deciding on the proper land use strategy andsuitable soil conservation practices. it ...

there are large areas of the world where seismicity is high while they form the whole or parts of urban conglomeration. iran can be literally compared to a large shaking table; various parts of it have been stricken by earthquake in the last four decades(1). tehran is also expected to have a major earthquake in the near future(2). therefore, urban design criteria for earthquake preparedness i...

in order to know the environmental behaviour of toxic pollutants it is fundamental to understandthe role of chemical components of a material on sorption of such pollutants.in this study, the sorption of amix of polycyclic aromatic hydrocarbons (pahs) by cork fractions (i.e. raw cork (cf), free extractive cork(fef) and nonsaponifiable (desf)) has been investigated to better understand the role ...

several factors effect on sorption of polycyclic aromatic hydrocarbons (pahs) in soil. co-existence of metals and organic matter of soil are among important affecting factors on sorptive behavior of pahs. this research investigated the effect of organic matter content and heavy metals (lead, nickel and zinc), on sorption of phenanthrene onto kaolinite. for this purpose, sorption of the organic ...

in a semiarid region of central iran, effects of parent materials, physiography and landscape position, land use, andmanagement practices on association of organic carbon with secondary (aggregates) particles and aggregate stability canhave important consequences in terms of carbon sequestration and budgeting, deciding on the proper land use strategy andsuitable soil conservation practices. it ...

environment conservation is the common concern at all levels from local to global. most of the recent environment problems and ill effects stem from ecological misappropriation and neglect to recognize the limits of ecosystem, its. rapid population growth, low income, lowest health facilities, poor sanitation, lack of education. personal and community hygiene poverty has enhanced the incidence ...

crabs of intertidal zone of a muddy shore in bandar abbas were studied using monthly examination of goharshad and terminal stations during august 2005 to july 2006. sampling was done by corer and 14 species from 6 families were identified. crabs were from ocypodidae, pinnotheridae, pilumnidae, trapeziidae, leucosiidae and varunidae families. results showed ocypodidae, the most abundant and dive...

abstract efficient use and management of organic matter are important aspects of sustainable agricultural. organic matter is relatively low in majority of soils in iran, and continuous use of n fertilizer would create environmental hazards. therefore, the combined use of n fertilizer and organic wastes is an effective strategy. the purpose of this study was investigating of residual effects of ...

clinical differential diagnosisthe organic acidemias are important in the differential diagnosis of metabolic and neurologic derangement in the neonate and of new-onset neurologic signs in the older child. a-organic aciduriaseveral disorders, not classified as primary disorders of organic acid metabolism, have a characteristic urinary organic acid profile that suggests the appropriate diagnosis...

recently organic agriculture as a most popular alternative production system has increasingly been considered by scientists, people and policymakers and governments in the world, and many research programs are directed to this sustainable production system. in organic agriculture it is hardly recommended to integrate plant with animal husbandry in agroecosystem. various animal products such as ...