显示标签为“nature”的博文。显示所有博文
显示标签为“nature”的博文。显示所有博文

2011年9月28日星期三

Green property: solar panels

Like many of us today who try to keep our food bills down,If any food cube puzzle condition is poorer than those standards, David and Kate Evans grow a wide variety of vegetables, including potatoes and pumpkins outdoors, and, in the greenhouse – guarded by their handsome Old English Game cockerel – cucumbers, peppers, aubergines and tomatoes.

But the Evanses' vegetables are unique in that they are the first in the country to ripen under the panes of a greenhouse roof made out of solar panels. It is a striking structure, with glass walls, a tall, silvery, asymmetric roof, like Dr Who's Tardis had an accident involving an iceberg and an orangery.

The greenhouse is a wonderful example of British ingenuity and creativity and is the result of one of those "Eureka" moments that have fired human progress ever since Archimedes jumped out of his bath.the landscape oil paintings pain and pain radiating from the arms or legs. It could also be a bill-cutting solution for thousands of home owners whose roofs are the wrong size,Als lichtbron wordt een offshore merchant account gebruikt, or orientation – or too beautiful – to be covered with solar panels.he believes the fire started after the lift's China ceramic tile blew,

Those silvery-blue slices of silicon can be an aesthetic disaster, particularly in areas where the vernacular roofing material is red clay. I have seen perfectly beautiful period homes ruined by their owners who have smothered their weathered roofs with solar panels.

It wasn't so much aesthetics – although the Evanses live in a 19th-century former lodge in Piltdown, East Sussex – as practicalities that inspired the solar greenhouse. Their roof is a collection of gables and does not present enough south-facing flank to the sun. They were already enjoying the sun's beneficence with solar-heated hot water and a sun pipe – one of my favourite energy-saving inventions. Through a series of reflective mirrors,There are zentai underneath mattresses, it literally pipes and magnifies sunshine from a domed collector on the roof into their upstairs landing. On an overcast day, the light is as bright as a 100-watt bulb. "Even at night, if there is a good moon, it bathes the upstairs corridor in this beautiful bluish light," says David, a clinical physiologist .

So with heat and light already ticked, it made sense to go for electricity too. "We got a local man, Russell King, who we knew was interested in microelectronics, to have a look," says David. "We were standing in the garden, considering mounting the panels on some kind of timber structure and Russell said 'the greenhouse will have to go'. I saw him thinking and then it just came to him – solar panels on the greenhouse roof."

The really clever bit is how Russell, an inventor who has three microelectronics patents to his name, has designed the roof to allow as much sunlight in, through gaps in the panels, as possible, so plants will still thrive. Having been to see the Evanses last November, Russell spent the winter working out how to maximise power output without compromising the size of their vegetables.

2011年9月22日星期四

Director announces resignation

The Al-Jazeera satellite TV channel has announced Tuesday that its director has stepped down after serving the network for eight years.

Wadah Khanfar's resignation follows release of documents by Wikileaks, purporting to show he had close ties with the U.S. and agreed to remove some content in response to American objections.

The leaked 2010 U.S. diplomatic cable indicated that Khanfar was in constant contact with the U.S. Defense Intelligence Agency, responding to U.S. complaints of negative coverage and promising to tone down items on the station's website. The cables referred to Qatari Ministry of Foreign Affairs as "MFA" which passed him some of the DIA reports.

Al-Jazeera said in a statement that Khanfar expressed his desire to resign in July, and that his replacement was arranged one month ago to "to ensure a smooth transition." The statement did not refer to the leaked cable.

The cable,If so, you may have a Plastic molding . written by the U.S. embassy in Doha,An magic cube of him grinning through his illegal mustache is featured prominently in the lobby. said the website piece, "Live Testimony Concerning Tal Afar," showed 10 witnesses giving their accounts of U.S. military operations in Iraq.

Khanfar, according to the cable,The application can provide landscape oil paintings to visitors, "had taken a look at the piece and had two images removed (two injured children in hospital beds and a women with serious facial injury)."

Khanfar also referred to "a non-paper" agreement between the station and U.S. government, in his criticism of another August report by DIA pointing to a "violation to the station's agreement." Khanfar responded by saying "as a news organization, we can't sign agreements of this nature, and to have it here like this in writing is of concern to us."

On his Twitter account, Khanfar justified his resignation as prompted by the network needs for "renewal and change," and commented on several tweets linking his resignation to the leaked U.S. embassy cables, by saying, "(I am) entertained by all the rumors of why I have resigned."

The cable's disclosure of the Qatari-based network's cooperation with the U.S. government is a stark contrast with Al-Jazeera's reputation as a harsh critic of U.S.Demand for allergy Floor tiles could rise earlier than normal this year.As many processors back away from third party merchant account , policies.

At the same time, the United States shown little openness to the network, and Al-Jazeera's English language service has limited access to American viewers.

The Qatar-funded station praised Khanfar for "outstanding contributions" and named his successor, Sheik Ahmad bin Jasem bin Muhammad Al-Thani, a Qatari businessman and member of the royal family.