List of Articles نفوذ پذیری

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  1 - Review of Moisture Movement Mechanisms in Plant Tissues Using Transfer Models in Porous Media – Part I: Moisture Transfer Models
  Fatemeh Mozafari ghorba Mohammadmehdi Maharlooei Ahmad Gazanfari Moghaddam
  10.30495/sarj.2021.1947768.1057
  Water transfer in plant tissues is a complex phenomenon. The cell wall and plasma membrane are permeable to water and the amount of water exchange among cells and the intercellular space mainly depends on the amount of intracellular water pressure and the viability of t More

  Water transfer in plant tissues is a complex phenomenon. The cell wall and plasma membrane are permeable to water and the amount of water exchange among cells and the intercellular space mainly depends on the amount of intracellular water pressure and the viability of the cell membrane. The movement of water within the plant tissues includes simultaneous heat and mass transfer and therefore the thermophysical properties of the plant tissue plays an important role in this transition. Capillary pressure, intrinsic permeability, relative permeability, effective moisture diffusivity, and thermal conductivity are the key thermal and transport properties needed for comprehensive investigation of moisture transfer mechanism in plant tissue. The plant material can be considered as a porous medium in a non-steady state, which contains about 10 - 80% water. Molecular diffusion for gases (water vapor and air), capillary influence for the liquid (water) and advection mechanisms (Darcy flow) are used in the drying model in porous media. Thus, multiphase models can be used to study the water movement in plant tissues. In multiphase models of transmission mechanism, transfer of water into two types of liquid and gas is investigated simultaneously under the influence of temperature and other properties of plant tissue. In this article, the plant tissue is considered as a porous medium and the factors affecting the moisture transfer in these tissues are discussed. Manuscript profile
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  2 - Effect of cycles of drying and saturation on sub-base soils of MSW landfill (case study: Tehran Kahrizak region)
  Naser Ebadati Mohammad Drostkersary
  Waste control and its adequate disposal are included as a substantial problem in human life inthis world. So far vast studies have been carried out at in this regards, and several of self healingmethods have been common in practice. Since recovery of waste is not cost e More

  Waste control and its adequate disposal are included as a substantial problem in human life inthis world. So far vast studies have been carried out at in this regards, and several of self healingmethods have been common in practice. Since recovery of waste is not cost effective and is withthe technologic limitations, with respect to the mentioned reasons, the waste Land fill is ageneral solution. However, practically it is impossible to give or achieve a general solution. Anadequate Land fill is a place for waste Land fill which must be a location that don’t infect theenvironment in short term or long term. The most important problem is use of a method thatdoesn't let to waste emulsion to leak into the ground or to control it properly. In this research fordecrease of leakage of emulsion waste, two basic specifications that are less cracking and moreself healing for determination of the efficiency of soils application was analyzed. In this reasonchemical, mechanical and permeability test based on ASTM standard was perform on theKahrizak Landfill soil samples, and finally with respect to the obtained results from variouscycles of drying and saturation, the permeability coefficient was calculated. Permeabilitycoefficients in the end of 1st & 2nd cycles of drying and saturation divided by initialpermeability coefficient and also the relative permeability was included as the criteria of soilefficiency for application in impermeable layers. And whatever the relative permeability of soilclose to the 1, then this type of soil is ideal for using in this field also it was found that soils withless plasticity index have lesser cracks during drying. Manuscript profile
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  3 - بررسی تاثیر سازندهای زمین شناسی بر روی کیفیت آب، آبخوان دهدشت غربی
  اردوان بهزاد فرهاد حمزه
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