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414 research outcomes, page 1 of 42
  • publication . Article . 2017
    Open Access Persian
    Authors:
    Setareh Sharifi; Amir Lakzian; Alireza Astaraei; Nasrin Ghorbanzadeh;
    Persistent Identifiers
    Publisher: Ferdowsi University of Mashhad

    Introduction: Iron cycle is one of the most important biogeochemical processes which affect the availability of iron in soils. Ferric iron oxides are the most abundant forms of iron in soils and sediments. Ferric iron is highly insoluble at circumneutral pH. Present inv...

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  • publication . Article . 2016
    Open Access Persian
    Authors:
    M. J. Pajand; H. Emami; A. Astaraee;
    Persistent Identifiers
    Publisher: Ferdowsi University of Mashhad

    Introduction: Topography is an important and effective property affecting the soil quality. Some researchers demonstrated that degree and aspect of land slope may influence the particle size distribution and gravel. Slope degree affects the surface and subsurface run-of...

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  • publication . Article . 2017
    Open Access Persian
    Authors:
    farid feizolahpour; mehdi kouchakzadeh; fariborz abbasi; Mohammad nabi Gheibi; Rajab Choukan;
    Persistent Identifiers
    Publisher: Ferdowsi University of Mashhad

    Introduction: Broadcast fertilization method increases fertilizer losses while results in lower nutrient absorption by plant roots. Fertigation is an effective method to increase water and fertilizer efficiency and to reduce the losses of nitrogen. Moreover, it allows f...

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  • publication . Article . 2017
    Open Access Persian
    Authors:
    S. Zaman Zad Ghavidel; K. Zeinalzadeh;
    Persistent Identifiers
    Publisher: Ferdowsi University of Mashhad

    Introduction: A total dissolved solid (TDS) is an important indicator for water quality assessment. Since the composition of mineral salts and discharge affects the TDS of water, it is important to understand the relationship of mineral salts composition with TDS. Mater...

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  • publication . Article . 2017
    Open Access Persian
    Authors:
    Farhang Azarang; Abdolrasoul Telvari; Hossein Sedghi; Mahmoud Shafai Bajestan;
    Persistent Identifiers
    Publisher: Ferdowsi University of Mashhad

    Introduction: The critical role of the rivers in supplying water for various needs of life has led to engineering identification of the hydraulic regime and flow condition of the rivers. Hydraulic structures such dams have inevitable effects on their downstream that sho...

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  • publication . Article . 2017
    Open Access Persian
    Authors:
    shahab ahmadi doabi; Majid Afyuni; Mahin Karami; Safura Merati Fashi;
    Persistent Identifiers
    Publisher: Ferdowsi University of Mashhad

    Introduction: Zinc (Zn) is an essential trace element for plants as well as for animals and humans. On the other hand, Zn is a heavy metal and its high concentration can cause some environmental problems. There are significant relationships between soils, plants and hum...

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  • publication . Article . 2017
    Open Access Persian
    Authors:
    Hossein Banejad; H. Banejad; F. Mohsenzadeh;
    Persistent Identifiers
    Publisher: Ferdowsi University of Mashhad

    Introduction: Pesticides are considered as the most important pollutants in surface water and groundwater. Neonicotinoids are new group of insecticides, derived from nicotine. Their physicochemical properties render them useful for a wide range of application techniques...

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  • publication . Article . 2014
    Open Access Persian
    Authors:
    Z. Parisay; V. Sheikh; M. Ownegh; A. Bahremand;
    Persistent Identifiers
    Publisher: Ferdowsi University of Mashhad

    Flood is one of the devastating phenomena which every year incurs casualties and property damages. Flood zonation is an efficient technique for flood management. The main goal of this research is flood hazard and risk zonation along a 21 km reach of the Gorganrud river ...

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  • publication . Article . 2017
    Open Access Persian
    Authors:
    mostafa Pajohannia; Mostafa Chorom; Siroos Jafari;
    Persistent Identifiers
    Publisher: Ferdowsi University of Mashhad

    Introduction: Iron is found in different forms in the soil. In the primary minerals, iron is found as Fe3+ or Fe2+ which converted to Fe2+ and released in unsuitable reduction conditions. Minerals such as sulfide or chlorine and bicarbonate can affect and change the dif...

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  • publication . Article . 2017
    Open Access Persian
    Authors:
    roza kazemi; shahram kiani;
    Persistent Identifiers
    Publisher: Ferdowsi University of Mashhad

    Introduction: Nitrification inhibitors (NIs) are compounds that retard the biological oxidation of ammonium to nitrite by depressing the activity of Nitrosomonas bacteria in the soil. Many popular NIs such as nitrapyrine (NP), dicyandiamide (DCD) and 3,4-dimethylpyrazol...

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414 research outcomes, page 1 of 42