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  • Audio enthusiasts blame “dirty” mains power for noise in their gear

    Other appliances also to blame … But before you blame power
    providers, Cawsey says most of the dirt entering our systems from the
    mains power is caused by other appliances and the equipment itself.
    “Digital electronics can create quite a bit of noise. CD and WD players
    are known to contaminate your mains power,” he says. “And TVs and
    computers are a huge source of noise.”

    … and neighbours: Other sources of electrical dirt are
    fluorescent lights, fridges or a neighbour’s arc welder or electric
    drill. Cawsey has spent years working on ways to reduce noise that
    affects AV systems. He now makes a range of specially treated power,
    speaker and interconnect cables as well as high-end pro- and power
    amplifiers.

    Power filtration boxes available: But he’s best known for two
    inexpensive power filtration boxes, priced at $449 and $699, which have
    won wide acclaim here and overseas for their noise-killing
    capabilities.

    Dedicated power line can help: Steve Eleftheriadis, another
    audio veteran and CEO of upmarket AV company Reference Audio Visual in
    Melbourne, has also found a way to combat annoying noise interference.
    His tried-and-tested formula has two parts: wiring the listening room’s
    power points to the mains switchboard through a dedicated power line,
    and a Shunyata power conditioner.

    Not too costly, either: “Running separate power from the
    equipment straight to the switchboard means isolating the equipment
    from all the other household appliances and lighting. A qualified
    electrician can do this for $150 to $250,” says Eleftheriadis.

    The Daily Telegraph, 1/2/2006, p. 9

    Source: Erisk – www.erisk.net 

  • Massive Grampians-Mt Lubra blaze under control

    Massive
    Grampians-Mt Lubra
    blaze
    under control

    Rain and milder weather eased Victoria’s bushfire emergency
    after 10 days of huge blazes, three deaths and multi-million-dollar stock and
    property losses. The blaze in the Grampians is now being recognised as the
    biggest since records have been kept in the park.

    Some politicians who toured the area at the weekend said the
    Victorian State Government was remiss in not declaring the fire as a natural
    disaster area. Member for Western Province, David Koch, said it was the worst
    fire in Victoria since Ash Wednesday in 1983.

    “Natural disaster status would secure much needed additional
    resources and financial support,” Mr Koch said.

    “The Premier has seen fit to offer this support to those
    affected by the disastrous Stawell fires on New Year’s Eve where although
    losses were similar, the area of total damage was significantly less.”

  • Polar bears walk on thin ice

    There’s
    more than one way to catch a fish as the saying goes. The polar bear is
    testament to that, throwing their approximate 300 kilos (about 600 pounds)
    against the ice until it breaks. Then they smash their massive paws through the
    ice to snatch their prey of fish or baby seals from the freezing waters.

    But the life of a polar bear is rapidly deteriorating for
    those living in Greenland. A recent Arctic Climate Impact Assessment report
    shows that in the past decade the region has been heating up twice as fast as the rest of the world.
    The ice-capped island of Greenland is about the size of Britain, France and
    Italy combined and summer temperatures of 20 degrees Celsius (69 degrees
    Fahrenheit) were previously unheard of. Now local residents say you can almost
    sail the icy waters year round. This is having an impact on the migration of
    the bears because with the disappearing ice they are more likely to stay put.

    At the top of the Arctic food chain, polar bears are well
    equipped for sub-zero temperatures with their two layers of fur and a layer of
    blubber that can measure 11.5cm (4.5 inches) thick. With this sort of
    protection from the cold, overheating is more of a problem, especially if they
    decide to get up to a jog.

  • ‘Western media biased against Arabs’

    Criticism of western media came from both western and Arab journalists and academics.

    Marc
    Lynch, a professor of political science at America’s Williams College,
    said: “After 9/11 a lot of Americans were not responding to the Arabic
    media, but to what they were being told about the Arabic media.

    “The
    gap between how Arabs and Americans understand the world is enormous
    … We need a real dialogue. Americans need to listen to Arabic media
    and vice-versa. We need Americans on Arab media,” he said.

    Countering
    criticism of the western media, the former editor of the Rand Daily
    Mail, Allister Sparks, said the Arabic world needed to get its own
    house in order first.

    “There is a great need in the Middle East
    to have greater self-examination. The struggle for human rights begins
    at home. From what I hear there is a serious shortage of
    self-examination,” he said.

    Abdul Bari Atwan, the chief editor of
    al-Quds Al Arabi, said: “In the Arabic world there isn’t much freedom.
    We do not talk much about domestic issues … if we had, maybe we
    wouldn’t be in the situation we are in now.”

    Mounir Shafik, the
    author, intellectual and former PLO director of planning, argued that
    freedom of expression and diversity of voices were greater in Arabic
    media than in the west.

    “The dominant media in the west is
    playing a negative role in terms of building bridges because the margin
    of freedom in the western media is very small.

    “The majority of
    western media do not allow people like me on their screens to build
    bridges. We need to give freedom of expression to the western media …
    There is a spirit inside the dominant western media that does not
    reflect even the ideas of their citizens.”

    Some delegates made a
    distinction between US and UK media, with a greater diversity of voices
    heard in UK publications, but Fahmy Howeidy added: “The distinction
    between the US and British press is important but it is the US press
    that influences decisions and the whole world.”

    And another line
    was drawn was between the “dominant” mainstream media and emerging
    “alternative” media, which are helping provide a counterbalance but are
    unable to break into the mainstream.

    “[Western media] has always
    bragged when comparing itself to the Russian media but … it should
    stop comparing itself with the Soviet Union and start comparing itself
    with us,” Mr Shafik said.

  • Sea energy to power Britain

    Harnessing the sea, particularly around Cornwall and the north of
    Scotland, with machines that capture the movement of tides and waves,
    has long been a dream of scientists. In recent years the quest for
    clean, renewable power to replace polluting fossil fuels has taken on a
    new urgency as the world battles to reduce carbon emissions from coal,
    oil and gas which are the biggest cause of climate change.

    Until
    now, marine power generators have been limited to a couple of small
    prototypes, considered too futuristic to take seriously as the answer
    to the planet’s energy problems. The study by the Carbon Trust, which
    advises the government on clean energy, challenges that. It predicts
    tidal and wave power generators could be supplying a significant amount
    of power to the electricity grid by the end of this decade.

    Its
    report follows a £3m, 18-month research project into how marine energy
    generators could work, part of £50m of support programmes promised by
    government. The report, which is being studied by ministers, says that
    the opportunities for machines which use the power of waves to produce
    electricity are ‘considerable’. Based on the number of sites with
    reliable tides and waves and close enough to connect to the mainland,
    such equipment could be supplying a fifth of the country’s current
    electricity needs over following decades.

    Given Britain’s long
    coastline, close to the strong currents of the Atlantic, marine power
    would also help to solve another of the government’s key priorities –
    reducing reliance on imported energy sources, said John Callaghan, one
    of the trust’s programme engineers.

    ‘The UK leads the world in
    marine renewables technology,’ he said. ‘Given our superb natural
    resources and long-standing experience in off-shore oil and gas,
    ship-building and power generation, the UK is in a prime position to
    accelerate commercial progress in the marine energy sector.’

    The
    report was welcomed by environmentalists: ‘Solutions to climate change
    and the threat and expense of nuclear power exist; we just need the
    political will to implement them,’ said a spokesman for Greenpeace.

    However
    the Carbon Trust also highlights problems. The new technology will need
    investment by the government and private companies and there is no
    reliable forecast for when it will be available on the large scale,
    said Callaghan. There are concerns that power generators at sea would
    be expensive to connect to the electricity grid, could not always
    provide power when it was needed, and may pose problems for sea life.

    Dr
    Jon Gibbins of Imperial College, London, questioned how much marine
    power could meet Britain’s aim of tackling climate change because that
    would require global agreement to reduce carbon. Many countries did not
    have suitable sites and could not afford the new technology, he said.
    ‘That doesn’t mean we can’t try it [marine power] and won’t do it,’ he
    added. ‘But if you want to rely on marine technologies to displace
    fossil fuel use you’re being very optimistic.’

    The World Wildlife
    Fund said it was against tidal barrages (which are not covered by the
    trust’s report) that create huge physical barriers to marine life in
    sensitive estuaries, but it supported the harnessing of tidal and wave
    power as long as sites were chosen carefully.

    Callaghan said the
    trust had identified ‘tens, possibly hundreds’ of suitable sites for
    wave power, principally off south-west England and north-west Scotland,
    and a dozen sites for tidal power turbines, half of them in the
    Pentland Firth between the Scottish mainland and the Orkneys.

     

    Sourced – The Observer