Friday, November 15, 2013

Locally designed, low emissions car launched in Qatar

Qatari non-profit organization Gulf Organization for Research and Development (GORD) launched a low emissions car at the 2012 United Nations Climate Change Conference (COP 18) in Doha. The car was designed and developed in Qatar.
Revealed during a press conference at the Qatar National Convention Centre, the car in addition to an internal combustion engine, includes an automotive thermoelectric generator designed to capture waste heat to produce hydrogen. GORD expects the heat waste collecting system to be compatible with any gasoline or compressed natural gas car.
GORD chairman Dr Al-Horr summarised the key concepts of the invention in a statement saying, "Our car produces electricity at no cost by capturing thermal waste energy, reducing costs and eliminating the need for an external source of electricity. Also, bulky compressed-hydrogen cylinders are a thing of the past, as our concept accomplishes the production of hydrogen by using water through fuel cells integrated within the car."
Most of the energy in Qatari vehicle comes from the the car's gasoline tank, supplemented by a thin film photo-voltaic panel on the roof. Normally in a combustion engine, chemical energy stored in a fuel, such as gasoline, is converted into heat energy through combustion. This heat energy is then converted into mechanical energy, manifested as an increase in pressure in the combustion chamber due to the kinetic energy of the combustion gases. The kinetic energy of these combustion gases are then converted into work; because of the inefficiencies in converting chemical energy into useful work, internal combustion engines have a theoretical maximum effiecincy of 37% (with what is achievable in day to day applications being about half of this). Of the chemical energy in the consumed fuel used by an internal combustion engine 40% is dissipated as waste heat. However, the Qatari vehicle uses a thermoelectric generator to convert this waste heat into electricity. Such generators are used in space vehicles, and produce electricity when thermoelectric materials are subjected to a temperature gradient, the greater the gradient the greater the amount of electrcity produced. In the GORD vehicle the electricity produced is used to electrolyse potable water to produce hydrogen which can be introduced into the vehicle's existing fuel system.
The researchers showed that the heat waste collection engine caused a decrease in the car's emissions, including a decrease of carbon monoxide and nitrous oxide emissions by more than 50%, the fuel efficiency increasing by 20%. On its website, GORD said that the heat waste collector engine is universal, "Any car can be adapted to accommodate the system as it doesn't alter any electro-mechanical systems".

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New ocean forming in African desert

Thursday, November 5, 2009

Geologists have confirmed that the African continent is being torn in two, forming a new ocean. An international collaboration has shown that a 35 mile long rift in the Afar region of the Ethiopian desert, which opened in 2005, is likely to be the beginning of a new sea.
The recent study, published in the journal Geophysical Research Letters, brings together seismic data from the formation of the rift, showing that it is driven by similar processes to those at the bottom of oceans.
African and Arabian tectonic plates meet in the desert, and have been slowly pulling apart for roughly 30 million years. The same movement has also been parting the Red Sea. But this is only at a speed of less than 1 inch per year.
The sudden cracking in 2005, referred to by geologists as a "mega-dike intrusion", opened up a rift over 20 feet wide in places. The study has found that this happened over only a few days. According to Cindy Ebinger, a co-author of the study from the University of Rochester: "We know that seafloor ridges are created by a similar intrusion of magma into a rift, but we never knew that a huge length of the ridge could break open at once like this."
The investigation was led by Professor Atalay Ayele of Addis Ababa University in Ethiopia. As well as Rochester, other groups involved included Eritrea Institute of Technology; National Yemen Seismological Observatory Center; University of Leeds, United Kingdom; Institut de Physique du Globe de Paris, France; and Columbia University, New York.
"The whole point of this study is to learn whether what is happening in Ethiopia is like what is happening at the bottom of the ocean where it's almost impossible for us to go," said Ebinger. "Because of the unprecedented cross-border collaboration behind this research, we now know that the answer is yes, it is analogous."

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Australian scientists develop culture to destroy reef killing starfish


Crown-of-Thorns starfish near Qamea Island in Fiji.
Image: Matt Wright

Following a study linking poisonous crown-of-thorns starfish to 42 percent of Australia's Great Barrier Reef destruction in recent decades, James Cook University Centre of Excellence for Coral Reef Studies in Queensland has developed a culture to destroy the reef-killing starfish, announced yesterday. The researchers have carried out successful trials of the culture against the starfish.
The culture is a beef extract similar to Bovril, the ABC (Australian Broadcasting Corporation) reported.
The culture is expected to replace a manual treatment of the problem, involving a poison injection delivered by a diver to each starfish. One of the researchers, Jairo Rivera Posada, stressed urgency and scale of the threat: "In the current outbreak in the Philippines they removed as many as 87,000 starfish from a single beach".
The researchers said the culture infects a starfish with bacteria that kill it within just 24 hours and spread by contact with other individuals of the species. This means divers would need to inject just one starfish to infect and destroy many individuals living close to each other.
The researchers recommended addressing the problems behind starfish outbreaks: "Any attempts to control these outbreaks will be futile without also addressing the root cause of outbreaks, including loss of starfish predators as well as increased nutrients that provide food for larval starfishes" referring to the agricultural run-off along the reef coast.
The researchers concluded the culture works and needs testing of its impact on other sea species.

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Endangered 'Asian unicorn' sighted


On Thursday, November 14, 2013, the World Wide Fund for Nature (WWF) announced that a living saola, or "Asian unicorn", has been photographed in Central Vietnam. The picture was recorded last September by a camera trap placed by the Vietnamese government and the WWF.
The saola, an antelope-like animal with long horns, had not been seen in Vietnam since 1998, said Quảng Nam Forest Protection Department Deputy Head Dang Dinh Nguyen. The saola is critically endangered, according to the IUCN Red List of Endangered Species. The WWF estimates only a few dozen saola, or at most a few hundred, survive in remote, dense upland forests along Vietnam's border with Laos. They have never survived in captivity.
The WWF hopes to help save the saola from extinction by safeguarding its habitat from poachers. Their country director for Vietnam, Van Ngoc Thinh, said, "This is a breathtaking discovery and renews hope for the recovery of the species."

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Sunday, October 06, 2013

Nature blog competition - 2013


I had started this blog in May 2013. My intention or the aim of this blog is to increase awareness in the peoples about Nature. I don't know that how much success is achieved in those 5 months but I will never give up and hence I have decided to continue this blog even in future. This blog achieved average 10 to 15 visitors per day. I hope this count will get increase in future. To achieve more friendly relations and participation of the netizens towards Nature, I have organized a Nature blog competition. I know that to arrange blog competition is not a joke and this is my first time to organize such things. But to increase the awareness towards Nature I have taken this step without thinking for the results. Even if only one person will participated then I think my blog get success.

 

So here are the rules and important dates of the Nature Blog competition,

1)     Your post/blog should be related with Nature. You can post/blog anything related with nature which can increase the awareness in world or the post may be informative about Nature or the post/blog may contains your contribution to the endangered animals and birds etc.

2)     Your post/blog should be original and it should be your own. If you are posting any guest post then you should specify the original author name in the post.

3)     The competition will start from today 06-10-2013 and closes on 30-11-2013.

4)     Results will be declared on Monday 16-12-2013.

5)     Any decision related with the blog competition is made by owner of the blog -Hear the sound of Nature (http://mylittlecontributiontonature.blogspot.in/) and is final and bound to all participants.

6)     Total 3 winners will be finalized depending upon the quality of the post/blog.

7)     All the participants will get certificates for participation.

8)     The winner of the competition also get winning certificate.

9)     This Nature blog competition is purely on non profit basis.

 

I am feeling very sad as I cannot give the awards in the form of money or other related things but please remember that our intention is to protect the Nature and in future if it is possible then I will try to organize some gifts for you. Hope you will participate and contribute to Nature.

You can participate by filling the participation form available on this site or you can directly send your contribution via comments.

If you have any query then please let me know.