isyulli: technology

Selasa, 17 Mei 2011

Australian Moths and Butterflies Are Barcoded

Australian moths and butterflies are being barcoded. There are 10,000 species in Australia and 65 per cent of them have been coded, 28,000 specimens in all. They are not flying around with a tag on them. DNA is analyzed then recorded with an image of a specimen in a barcode system.

The database is a combined project by the Atlas of Living Australia (ALA) and CSIRO's Australian National Insect Collection (ANIC). It is the first time such a system has been used to categorize a group of insects in a country. This is the beginning. Plans are in train to record most organisms worldwide.

The technology has been used to determine if wrongly named fish are being sold. It will be used to identify dangerous pests coming into Australia. Species will now be more effectively categorised in research.

http://www.adventure--australia.blogspot.com/
http://www.tysaustralia.blogspot.com/
http://www.feeds.feedburner.com/AdventureAustralia
http://www.technorati.com/blogs/
http://adventure--australia.blogspot.com

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Science

Kamis, 16 Desember 2010

New VHF Broadband From CSIRO

CSIRO continues its groundbreaking work in broadband technology. After taking US based computer manufacturers to court to make them pay for Wi-Fi developed by CSIRO, work goes ahead on wireless broadband.

The new system uses ordinary VHF antennas already on rooftops. Smithton in Tasmania is the town chosen for project testing. Terminals were set up on six farms, the furthest one being 8.2 km away from the transmitter. Phone, the Internet and video were tested. A speed of 12 megabits per second was achieved using just one TV channel. VHF channels are soon to be phased out with free to air television moving to UHF.

The new broadband is very efficient. Where television had broadcast using 40 kilowatts per channel, wireless Internet worked perfectly with 3-watt. The technique of "beamforming" was used: multi-user input and spacial division multiplexing output. Work still has to be done to improve downloading capability.

Such an Internet system is of paramount importance to Australia. With such a large country and a low population fiber optics to everyone is not possible. CSIRO is concerned about mobile services getting too much of the VHF band when TV eventually ends. There is not much doubt, however, that successful wireless broadband would be given priority by any government.

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