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Newsletter Nov-Dec 2013

Scientific & Technological Achievements of I.R. of Iran

Newsletter Nov-Dec 2013

 

This issue contains:

  • UN Chief Underlines Iranian Scientists' Role in Global Development
  • 67 Iranian Firms Cooperating in Manufacture of 150-Seater Plane
  • Scientists Use Mathematical Models to Investigatie Electrochemical Growth Mechanism of Gold Nanowires
  • Iranian researchers produce honey-made nano-fiber for treating wounds
  • Nanotechnology Used in Production of Cotton-based Goods
  • Antibacterial Nanocomposites Produced from Offset Lithography Inks
  • Scientists Mulling Possibility of Using Nanostructured Bioceramics to Repair Bone Tissue
  • Scientists Use 3-D Printing Method to Produce Nanocomposite Scaffolds
  • Iran has launched its second biological package carrying a monkey called 'Fargam' to space
  • Simple, Cost-Effective Method Found for Production of Manganese Oxide Nanopowder

 

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UN Chief Underlines Iranian Scientists' Role in Global Development

On the occasion of the World Science Day for Peace and Development, a daylong conference on science, peace and development was held in Tehran at Sharif University of Technology on 18 Nov 2013. In a message to this conference, UN Secretary-General Ban Ki-moon underscored that Iran's eye-catching civilization and talented youth can help significantly promote science and technology worldwide.[1]

67 Iranian Firms Cooperating in Manufacture of 150-Seater Plane

A sum of 67 science-based companies have been identified for cooperation in manufacturing the 150-Seat passenger plane and at the end of a conference (was held on November 25) the status of each of these companies and their duties in the macro plan will be specified. On this basis, the science-based companies which are active in aerospace will convene for cooperation in the second phase of this national macro project, including manufacturing of airplane parts of the 150-seat plane.[2]

Scientists Use Mathematical Models to Investigate Electrochemical Growth Mechanism of Gold Nanowires

Iranian materials engineering researchers from Sharif University of Technology investigated electrochemical growth mechanism of gold nanowires and nanotubes by matching the recorded current response during the reduction of ionic parts of gold (during the electrochemical growth of nanowires/nanotube) and corresponding response with cylindrical ultramicro electrodes arrays. The research was carried out in a few steps. Firstly, gold nanowires and nanotubes were synthesized through electrochemical deposition method, and the recorded data during the formation of nanostructures were studied. Then, the electrochemical reduction of gold nanowires was analyzed by using the response of cylindrical ultramicro electrode arrays. Next, an experimental model with an error of approximately 2.85% was obtained for the first time for the diffusion of gold ion complexes into the solution during the growth of gold nanowires. Finally, the performance and response of the obtained nanostructures were investigated. [3]

 

Iranian researchers produce honey-made nano-fiber for treating wounds

Iranian researchers have produced a drug-carrying nano-fiber web using biodegradable artificial polymer and honey as a natural polymer, which can be used in covering wounds and producing restorative layers. Honey has long been used a healing material for treatment of different types of wounds because of its anti-bacterial and anti-inflammatory properties. Mixture of nano-fibers with honey can cover the wounds and treat the injuries.[4]

Nanotechnology Used in Production of Cotton-based Goods

Iranian researchers from Islamic Azad University, Ardebil Branch, in association with their colleagues from Amir Kabir University of Technology presented a new and simple method for the completion of the process of production of cotton-based goods by using nanobiotechnology. The method enables the production of cotton fibers with antibacterial and antifungal properties, and the clothes do not cause any side effect on human's body due to their very low toxicity. The aim of the research was to present a new and simple method for the completion of textile products by using biotechnology and nanotechnology at the same time. To this end, enzymes such as cellulase, laccase and their mixture in addition to nanoclay were used in the completion of antibacterial cotton products painted by indigo, and the antibacterial and antifungal properties of the final product were investigated. Results showed that the cotton fiber produced through this method has antibacterial and antifungal properties and it has high compatibility with human's skin.[5]

Antibacterial Nanocomposites Produced from Offset Lithography Inks

Experts from Iran Institute for Color Science and Technology used zinc oxide nanoparticles to produce an antibacterial nanocomposite from offset lithography inks which can be applied for lithography on various types of packaging of foodstuff, medications and cosmetics. A wide range of objects are subjected to printing, to the extent that many of them are in contact with polluted media, and pollution is transferred to humans when humans are in contact with the objects. Therefore, the production of an ink containing appropriate nanoparticles such as Ag or Zno can have effective applications in various microorganisms. It can also increase the lifetime and durability of the products. The aim of the research is to produce an antibacterial nanocomposite from offset lithography inks used for publishing on the packaging of foodstuff, medications and cosmetics in a way that the ink conserves its initial properties and its performance does not vary. Results of antibacterial test showed improvement in antibacterial properties and reduction in the growth of bacteria on ink samples in the presence of zinc oxide nanoparticles.[6]

Scientists Mulling Possibility of Using Nanostructured Bioceramics to Repair Bone Tissue

An Iranian researcher from Material and Energy Research Center in association with scientists from Research and Clinical Center for Infertility of Shahid Sadoughi University of Medical Sciences of Yazd studied repairing damaged bone tissues of rats by using nanostructured bioceramic based on silicate magnesium calcium (merwinite) and compared it to hydroxyapatite commercial powder. Merwinite has attracted the attention of many researchers in recent years due to its higher cellular proliferation and better mechanical properties. Previous studies show that osteoblasts (bone making cells) show better proliferation activity on merwinite than on hydroxyapatite. Results showed that ossification and angiogenesis took place in a wider range and faster in merwinite in comparison with other groups. The reason was significant increase in the activity of osteoblasts on nanostructured merwinite in comparison with hydroxyapatite at micrometric scale.[7]

Scientists Use 3-D Printing Method to Produce Nanocomposite Scaffolds

Iranian researchers from Sharif University of Technology in association with their colleagues from Max Planck Institute, Germany, produced Nanocomposite scaffolds for tissue engineering with controlled pores by using indirect three-dimensional printing method. The pores contained various Nanoparticles such as titanium dioxide and bioactive glass in micrometric and Nanometric size. Growth kinetics of bone tissue was investigated on the product through in-vitro tests. To this end, the sacrificial cast was made with three dimensional structures and its surface was coated with paraffin. Results of the research showed that the effective interfaces of particles and cells increase as nanoparticles are added to the polymeric bed due to the high tendency of Nanoparticles to accumulate in the surface. Moreover, the Nanoparticles affect cell adhesion, proliferation, and differentiation by creating Nanotopography, increasing the coarseness and surface roughness.[8]

Iran has launched its second biological package carrying a monkey called 'Fargam' to space

The Islamic Republic of Iran's Space scientists sent the monkey to the suborbital space of 120Km which returned back to Earth after a 15-minute trip alive on 14 Dec 2013. The rocket carrying Fargam, the second space monkey, was 'Pajouhesh' Rocket. The mission was the second in a serried of missions developed with the objective of space research improvement. The 'Fargam' monkey got the Islamic Republic of Iran a step closer to sending man to space. In February 2013 Iranian space scientists was successful in sending 'Pishgam' rocket to space, which carried 'A. Tab' monkey, and retrieved it back to Earth. The mission established Iran's space in bio-aeronautics. In 2008 Iran launched its first all-Iranian Omid satellite and entered the international space club. Iran had signed the treaty to use the outer space for peaceful and humanitarian purposes. [9]

Simple, Cost-Effective Method Found for Production of Manganese Oxide Nanopowder

Iranian researchers from the Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, succeeded in the production of manganese oxide Nanopowder through a simple, cost-effective and environmental-friendly method. The product has wide applications in petrochemical industries and battery fabrication. Results of the research showed that manganese nano-oxides produced in the presence of various oxidants, is able to oxidize water to oxygen, and alkenes to epoxides. The rate and efficiency of the reactions showed significant increase in comparison with samples at micrometric scale. Reduction in the size of nanoparticles can be considered the main reason to this fact.[10]

 

 


1.Fars News Agency - Nov12,2013 .

[2] Http://english.farsnews.com/newstext.aspx?nn=13920918000908.

[3]. IRNA - Nov18,2013. (Journal of the Electrochemical Society, vol. 160, issue 6, 2013, pp. 279-288)

[4]. ISNA - Nov25,2013

[5]. http://english.farsnews.com/newstext.aspx?nn=13920905000228.

[6]. FNA - Dec 01, 2013.( Composites Part B: Engineering, vol. 51, August 2013, pp. 92-97)

[7]. FNA - Dec 08, 2013. (Ceramics International, vol. 39, November 2012, pp. 4575-4580 )

[8]. MNA - Dec 7, 2013. (Journal of Biomedical Materials Research A, vol. 101, issue 10, October 2013, pp. 2796-2806).

[9]. MNA - Dec 14, 2013.

[10]. FNA - Dec 14, 2013.( Dalton Transactions, vol. 41, issue 36, July 2012, pp. 11026-11031)

 

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