List of Articles نانوذرات

• Open Access Article
  • Abstract Page
  • Full-Text
  
  1 - Compare of the Application of Nano and Micro Wastes as Supplying Source of Zinc in Cucumber Hydroponic Culture
  sahar moghaddasi fathallah karimzadeh
  10.29252/.4.6.13
  In recent years, disposal of waste tires is an environmental challenge in many countries. Previous researches has been shown that rubber waste ash and its nanoparticles can be used as an effective source of zinc (Zn) for plant. In this research, feasibility of using nan More

  In recent years, disposal of waste tires is an environmental challenge in many countries. Previous researches has been shown that rubber waste ash and its nanoparticles can be used as an effective source of zinc (Zn) for plant. In this research, feasibility of using nanoparticles and rubber waste (as zinc supplying source in plant) is studied moreover comparing the nanoparticles of rubber waste with commercial zinc sulfate fertilizer available in the market. In this regard, moreover nanoparticles production and characterization them by scanning and transient electron microscope, these wastes were used in cucumber hydroponic culture, then the quantitative and qualitative performance of the fed products were compared with the commercial zinc sulfate fertilizer available in the market. According to the obtained results, by reducing the particle size of the rubber from micron to nano, Zn extractable percentage increased from 1.5 to 2.5%. So, using rubber nanoparticles increased plant performance and also, increased Zn concentration in plant tissues compared with commercial zinc sulfate fertilizer and those grown in control. Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  2 - A Review of Arsenic Removal Methods from Water Resources
  Marzieh Hasanzadeh Fariba Ostovar
  10.29252/.4.6.39
  Many of the pollutants in water are known to be harmful for human health and toxic for environment. Among these pollutants, Arsenic is more important because millions of people are exposed to contaminated drinking water. The World Health Organization (WHO) has identifie More

  Many of the pollutants in water are known to be harmful for human health and toxic for environment. Among these pollutants, Arsenic is more important because millions of people are exposed to contaminated drinking water. The World Health Organization (WHO) has identified the permitted limit of below 0.01 mg/L (10 micrograms per liter) for arsenic in drinking water and the same amount for arsenic has been reported in Iran's 1053 standard. In this study, various techniques have been investigated for removing Arsenic and efficiency of different nanoparticles in treatment of Arsenic from drinking water. Common methods of removing Arsenic from water sources are including oxidation, coagulation and flocculation, reverse osmosis and ultrafiltration, ion exchange, phytoremediation and new technologies based on the use of nanoparticles. The findings showed that despite of the high arsenic removal percentage using different methods such as oxidation, ion exchange and floating with dissolved air, these methods are not economic and a lot of time is required to achieve optimal efficiency. Recently, the use of nanoparticles has become very popular, so that metal oxide nanoparticles such as magnetic iron, Zinc, Copper, Serum, and Aluminum can completely eliminate Arsenic soluble with a high concentration of 50 mg/L in water sources and after the adsorbent is saturated, it is possible to use the regeneration of adsorbents, repeatedly by adsorbing the pollutant into the adsorbent. As a result, the use of nanoparticles is better than chemical processes and is economic due to their high efficiency in a short time. Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  3 - -
  mehrnoush mohammadi
  -

  - Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  4 - A Review of Hydrogels Containing Fibers in Drug Delivery Systems
  Mohammad Hossein Karami Majid Abdouss Mohammadreza Kalaee Omid Moradi
  Hydrogels are three-dimensional networks of hydrophilic polymers capable of absorbing and retaining significant amounts of fluids, which are also widely applied in wound healing, cartilage tissue engineering, bone tissue engineering, release of proteins, growth factors, More

  Hydrogels are three-dimensional networks of hydrophilic polymers capable of absorbing and retaining significant amounts of fluids, which are also widely applied in wound healing, cartilage tissue engineering, bone tissue engineering, release of proteins, growth factors, and antibiotics. In the past decades, a lot of research has been done to accelerate wound healing. Hydrogel-based scaffolds have been a recurring solution in both cases, although their mechanical stability remains a challenge, some of which have already reached the market. To overcome this limitation, the reinforcement of hydrogels with fibers has been investigated. The structural similarity of hydrogel fiber composites to natural tissues has been a driving force for the optimization and exploration of these systems in biomedicine. Indeed, the combination of hydrogel formation techniques and fiber spinning methods has been very important in the development of scaffold systems with improved mechanical strength and medicinal properties. Hydrogel has the ability to absorb secretions and maintain moisture balance in the wound. In turn, the fibers follow the structure of the extracellular matrix (ECM). The combination of these two structures (fiber and hydrogel ) in a scaffold is expected to facilitate healing by creating a suitable environment by identifying and connecting cells with the moist and breathing space required for healthy tissue formation. Modifying the surface of fibers by physical and chemical methods improves the performance of hydrogel composites containing Manuscript profile