Sci./Tech. http://english.irib.ir Mon, 16 Oct 2017 23:58:10 +0000 en-gb Russia ‘hopes’ to sign satellite launch deal with Iran http://english.irib.ir/radioculture/sci-tech/item/223139- http://english.irib.ir/radioculture/sci-tech/item/223139- Russia hoped to be able to strike a contract with Iran soon in a bid to launch an Iranian-made remote Earth sensing satellite on its carrier rocket by the end of 2018.

"We hope to sign the satellite launch contract by the middle of April. If the contract is signed, the launch may take place at the end of 2018," Leonid Macridenko, the Head of Russia’s Space Monitoring Systems, Information and Control and Electromechanical Complexes (VNIIEM), said on Wednesday, the Tass news agency reported.

A preliminary agreement on the satellite launch was signed at the MAKS-2015 air show.

The Iranian company of Bonyan Danesh Shargh inked the agreement on building the system with the Russian companies of NPK BARL and VNIIEM.

Under the agreement, the Russian corporations will help the Iranian firm create a remote-sensing system which can be employed for collecting information about the Earth's surface, atmosphere and oceans. The launch will take place on a Russian Soyuz carrier rocket.

Iran successfully launched into orbit its first indigenous data-processing satellite, Omid (Hope), back on February 2, 2009.

As part of a comprehensive plan to develop its space program, Iran also successfully launched its second satellite, dubbed Rassad (Observation), into the earth’s orbit in June 2011. Rassad’s mission was to take images of the earth and transmit them along with telemetry information to ground stations.

The country’s third domestically-built Navid-e Elm-o Sanat (Harbinger of Science and Industry) satellite was sent into orbit in February 2012.

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Sci./Tech. Thu, 25 Feb 2016 05:19:14 +0000
Iran to produce 7,500 mw electricity from renewable energy resources http://english.irib.ir/radioculture/sci-tech/item/221916-iran-to-produce-7,500-mw-electricity-from-renewable-energy-resources http://english.irib.ir/radioculture/sci-tech/item/221916-iran-to-produce-7,500-mw-electricity-from-renewable-energy-resources

The Iranian Energy Ministry plans to increase the volume of power generation through utilizing renewable energies.

 

"Renewable energies will account for the generation of 7,500 megawatts of new capacity for electricity generation by 2030," Energy Minister Hamid Chitchian said Monday.

He noted that his ministry also plans to improve the capacity of combined-cycle power plants in a bid to increase output by 50 percent.

In a relevant development last September, Deputy Energy Minister Houshang Falahatian said plans are underway to establish a special economic zone for renewable energies.
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Sci./Tech. Mon, 25 Jan 2016 19:22:07 +0000
Commander: Iran speedboats outpace US vessels http://english.irib.ir/radioculture/sci-tech/item/221908-commander-iran-speedboats-outpace-us-vessels http://english.irib.ir/radioculture/sci-tech/item/221908-commander-iran-speedboats-outpace-us-vessels

Islamic Revolution Guards Corps (IRGC) Navy Commander Rear Admiral Ali Fadavi said the speedboats manufactured in Iran can sail at a much higher speed than the US vessels.

 

"Our fast attack craft fleet is often twice as fast as their American rivals. The plan is to make them go even faster,” Fadavi told the state-run TV on Sunday night.

Referring to the US official remarks that Washington is aware of the scope of IRGC's missile tunnels and vessels along the Iranian coasts, he said, "The Americans don’t know everything about us and the things they know is what we, ourselves, have shown and wanted them to know it."

"Their unknown is twice the realm of their known," he added.

Elsewhere, Fadavi spoke of the IRGC Navy's plans to stage massive drills in the next Iranian year (starting March 21).

In recent years, Iran has made great achievements in its defense sector and attained self-sufficiency in producing essential military equipment and systems.

Iranian officials have always stressed that the country's military and arms programs serve defensive purposes and should not be perceived as a threat to any other country.
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Sci./Tech. Mon, 25 Jan 2016 18:24:40 +0000
Slow heart rate does not increase risk of heart disease http://english.irib.ir/radioculture/sci-tech/item/221666-slow-heart-rate-does-not-increase-risk-of-heart-disease http://english.irib.ir/radioculture/sci-tech/item/221666-slow-heart-rate-does-not-increase-risk-of-heart-disease

Bradycardia -- a slower than normal heartbeat -- does not increase the risk of developing cardiovascular disease, according to a study.

 

The study made by researchers at Wake Forest Baptist Medical Center was published in the Jan.19 online edition of the Journal of American Medical Association Internal Medicine.

"For a large majority of people with a heart rate in the 40s or 50s who have no symptoms, the prognosis is very good," said Ajay Dharod, M.D., instructor in internal medicine at Wake Forest Baptist and corresponding author of the study. "Our results should be reassuring for those diagnosed with asymptomatic bradycardia."

The heart usually beats between 60 and 100 times a minute in an adult at rest. But with bradycardia, the heart beats fewer than 50 times a minute. The condition can cause light-headedness, shortness of breath, fainting or chest pain due to the heart not pumping enough oxygen-rich blood through the body.

However, until now, there had not been any research to determine if a slow heart rate contributed to the development of cardiovascular disease.

In the Wake Forest Baptist study, the scientists conducted an analysis of 6,733 participants in the Multi-Ethnic Study of Atherosclerosis (MESA). This study, which was sponsored by the National Heart Lung and Blood Institute, included men and women ages 45 to 84 who did not have cardiovascular disease when first recruited into this study, but who may have been on heart rate-modifying medications frequently used to treat hypertension. Study participants were followed for more than 10 years to monitor cardiovascular events and mortality.

The researchers found that a heart rate (HR) of less than 50 was not associated with an elevated risk of cardiovascular disease in participants regardless of whether they were taking HR-modifying drugs, such as beta blockers and calcium channel blockers.

However, the study did show a potential association between bradycardia and higher mortality rates in individuals taking HR-modifying drugs.

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Sci./Tech. Wed, 20 Jan 2016 10:25:11 +0000
SiC nanoparticles applied to modify properties of Portland cement http://english.irib.ir/radioculture/sci-tech/item/221407-sic-nanoparticles-applied-to-modify-properties-of-portland-cement http://english.irib.ir/radioculture/sci-tech/item/221407-sic-nanoparticles-applied-to-modify-properties-of-portland-cement

Iranian researchers from University of Mazandaran used silicon carbide (SiC) nanoparticles to produce a sample of cement and concrete with high durability and stability.

 

Results of the research have applications in civil engineering, specially concrete industry.

Since mechanical behavior of concrete components depend on its structural elements, efforts have been made in this research to change the molecular structure of cement and concrete by using silicon carbide (SiC) nanoparticles in a way to modify the general characterization of concrete components.

Results of the research confirm the modification in characterization of silicon carbide containing cement. The nanoparticles in fact strengthen the cement matrix. As a result, mechanical properties, durability and performance of the concrete improve.

According to the researchers, silicon carbide nanoparticles decrease the amount of calcium hydroxide but increase the amount of stable gel of hydrated calcium silicate (C-S-H). This fact modifies the transfer area between the aggregate and the cement matrix. Hydrated calcium silicate plays the key role in increasing the strength and durability of the concrete and it creates the glue that sticks together the concrete components. Based on the studies, silicon carbide nanoparticles filled many pores and voids at nanometric scale as fillers and they decreased diffusivity but resulted in a denser structure in the sample. Therefore, a sticky denser matrix was produced. The nanoparticles also decreased roughness and the internal strain of the samples.

Results of the research have been published in National Academy Science Letters, vol. 38, issue 4, 2015, pp. 361-364.
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Sci./Tech. Thu, 14 Jan 2016 14:03:38 +0000
New solar power plant set up in Tehran http://english.irib.ir/radioculture/sci-tech/item/221227- http://english.irib.ir/radioculture/sci-tech/item/221227- An Iranian deputy energy minister inaugurated a photovoltaic power station north of capital Tehran on Saturday.

According to Tasnim news agency, the new power station, named after Iranian polymath Sheikh Bahaee, generates electricity with a 250KW capacity.

Deputy Energy Minister Houshang Falahatian opened the solar plant in a ceremony attended by governor of Tehran Province, a number of city councilors and parliamentarians.

Iran has formulated plans to diversify electricity generation from the plants that use renewable energy sources, such as wind or solar power.

The country’s electricity industry ranks 14th in the world and first in the Middle East in terms of electricity generation by having an installed power generation capacity of 67,806 MW.

Solar photovoltaic generation, known as PV, contributes 96 to 98 percent less greenhouse gases than electricity generated from 100 percent coal, according to the Energy Research Center of the Netherlands.

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Sci./Tech. Sun, 10 Jan 2016 09:58:44 +0000
Iran transfers batch of Emad missiles to new underground missile town http://english.irib.ir/radioculture/sci-tech/item/221015-iran-transfers-batch-of-emad-missiles-to-new-underground-missile-town http://english.irib.ir/radioculture/sci-tech/item/221015-iran-transfers-batch-of-emad-missiles-to-new-underground-missile-town

Iran has transferred its recently tested ballistic missile, Emad, to a new underground tunnel facility, images showed on Tuesday.

 

Iranian Parliament Speaker Ali Larijani made a visit to the Islamic Revolution Guards Corps (IRGC)'s new underground missile town today during which he vowed the legislature would allocate a much bigger budget to the country's missile program.

The images and footages released after the visit indicated that the IRGC has transferred a large number of Emad missiles to the deep underground base.

It is the second underground missile town that Iran is displaying in the past few months.

Iran in October unveiled a deep underground tunnel facility packed with missiles and launcher units a few days after testing the long-range Emad missile.

After unveiling the underground depot for the first time, IRGC Lieutenant Commander Brigadier General Hossein Salami said, "That was one of our oldest stockpiles and we haven’t yet shown our modern missile depots, where missiles with big cross sections have been stockpiled."
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Sci./Tech. Tue, 05 Jan 2016 14:44:11 +0000
Economic method applied to produce metal oxide nano-particles with optical properties http://english.irib.ir/radioculture/sci-tech/item/220871-economic-method-applied-to-produce-metal-oxide-nano-particles-with-optical-properties http://english.irib.ir/radioculture/sci-tech/item/220871-economic-method-applied-to-produce-metal-oxide-nano-particles-with-optical-properties

Iranian researchers produced metallic nano-particles with specific optical properties.

 

The nano-particles produced in this research have applications in materials sciences, laser and information technology. The method used in this research can be considered as a new way for the production of nano-particles that increases efficiency and production rate in comparison with the usual methods.

The synthesis and design of metal nano-particles and their oxides has significantly grown in recent years due to the growth in their application in various sciences. Various methods have so far been used for the production of metal and metal oxide nano-materials, including radio methods, thermal degradation, chemical degradation and so on.
The majority of methods are time-consuming and expensive; therefore, the aim of the research was to obtain a high-efficient and quick method to synthesize metal oxide nanoparticles. Sono-electro-chemical method has been used to obtain this goal.

Sono-electro-chemical method is one of the simplest and most economic methods in the production of nano-particles. This method is a combination of ultrasonic waves with the convenient electro-chemical method. In this method, smaller particles at nano-metric dimensions are produced in comparison with the electro-chemical method. The application of ultrasonic waves significantly increases the reaction rate during the process.

Therefore, the new method has higher rate and efficiency in the synthesis of products in comparison with other methods. Due to their unique optical properties, the nano-particles produced in this method can be used in the production of laser, information technology, fluorescence sensors, transistors, and biological degradation.

Results of the research have been published in Ultrasonics Sonochemistry, vol. 22, 2015, pp. 382-390.
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Sci./Tech. Sat, 02 Jan 2016 14:48:31 +0000
Iran drills 268km of wells in 9 months http://english.irib.ir/radioculture/sci-tech/item/220783-iran-drills-268km-of-wells-in-9-months http://english.irib.ir/radioculture/sci-tech/item/220783-iran-drills-268km-of-wells-in-9-months

National Iranian Drilling Company (NIDC) has drilled more than 268 kilometers of oil and gas wells in offshore and onshore fields across Iran since the beginning of the current Iranian calendar year which began on March 21.

 

Hamid-Reza Khoshayand, deputy chief officer of NIDC, said the company has also installed 75 drilling rigs during the 9 months since March.

Furthermore, NIDC has spudded 136 discovery, development and repair wells in 10 provinces of Iran.

Enjoying a highly educated labor, NIDC was formed to replace 46 drilling companies in Iran.

The NIDC chief further said the company's first offshore drilling projects started at phases 9 and 10 of the supergiant South Pars gas field that Iran shares with Qatar in Persian Gulf waters.

The company’s services include well logging, cementing and acidizing, drill stem test, well testing, training and development, and general services. It also provides engineering, programming, and industrial cleaning services to steam boilers, compressors suction and lub oil systems, water jackets, chillers, and heat exchangers, as well as industrial cleaning services to the oil and gas refineries.

NIDC is in charge of all offshore and onshore drilling activities. In 2011, NIDC, drilled or completed 192 oil and gas wells, drilled 454 thousand meters of wells and provided more than 8 thousand expert or technical services to customers.

From a limited fleet of six drilling rigs in the beginning of the 80s to one of the Middle East most trusted companies in the field of oil & gas wells drilling, NIDC has a good history of technical innovation and development.
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Sci./Tech. Thu, 31 Dec 2015 12:16:58 +0000
Production of graphene oxide nanosheets to economize fuel cells http://english.irib.ir/radioculture/sci-tech/item/220780-production-of-graphene-oxide-nanosheets-to-economize-fuel-cells http://english.irib.ir/radioculture/sci-tech/item/220780-production-of-graphene-oxide-nanosheets-to-economize-fuel-cells

Iranian researchers succeeded in controlled production of graphene and graphene oxide nanosheets at laboratorial scale that may help the economization of fuel cells and energy storage.

 

Although fuel cells will play a very important role in future as the convertors of green fuels, their expensive price limits wide applications of these devices in the routine life.
Therefore, these devices will be used more often by people in a natural manner in case raw materials with reasonable price are prepared to produce main parts of the fuel cells, including membranes and catalysts.

The aim of the research was to produce nanostructures as catalyst holders to be used in proton membrane fuel cells to reduce the final price of the devices.

Graphene and graphene oxide are usually synthesized through Hummer’s method or Hummer’s modified method, which does not have the ability of industrial production. In addition, many chemicals and pollutants are used in those two methods, which put the health of people and environment at risk.

In this research, graphene oxide nanosheets are produced through electrochemical method in a top-down approach, and this method does not have Hummer’s method’s problems. Reduction in production cost is another advantage of this method. The results of the research will have application in the production of green energies.
Results of the research have been published in Electrochemica Acta, vol. 165, 2015, pp. 330-337.
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Sci./Tech. Thu, 31 Dec 2015 12:14:03 +0000