Artist Fur TradeSong "Voyager" Album Don't Get Heavy "This song is a perfect example of why we like[...] A deadly U.S. airstrike Thursday in a northwest tribal village, along with the sudden release Wednesday of a U.S. intelligence contractor accused of murdering two Pakistanis, has raised tensions between the United States and Pakistan and brought new domestic criticism of Pakistan's security establisRailway construction workers have found remains of 12 bodies
in the City of London that archaeologists believe belonged to people who died in the
14th-century plague Watch the trailer for My Joy director Sergei Loznitsa's new drama, which is set on the western border of the USSR in 1942 and tells the story ofone man's struggle after he's wrongly accused of cooperating with the German occupiers Government investigatorshave rejected claims that electronic defects caused Toyota cars and trucks to accelerate out of control, a finding released Tuesday that offers a measure of long-awaited vindication for the world's largest automaker andshifts blame to the drivers who reported the incidents. Secretary of State John Kerry said that the
Obama administration had gained new confidence that the Syrian opposition can minimize the risk of weapons falling into extremists’ hands.
Electric companies are looking for ways to provide enough power at reasonable pricesfor electric vehicles.
News of the former South African leaderâ€™s downturn used the strongest language yet after three weeks of hospitalization. A Harvard law professor testified that WikiLeaks performed a legitimatejournalistic function when Pfc. Bradley Manning gave it vast
archives of secret government files. The United States' top fighter jet, the Lockheed Martin F-22, hasclickbank pirate more than 30 hours of maintenance for every hour in the skies, pushing its hourlycost of flying to more than $44,000, a far higher figure than for the warplane it replaces, confidential Pentagon test results show. U.S.
stocks fell as disappointing earnings at companies from Microsoft to Fifth ThirdBancorp increased concern that the recession is deepening and that banks need to raise morecapital.
In Greeceâ€™s first major privatization deal since the countryâ€™s debt crisis erupted three years ago, the government will sell a controlling stake in OPAP to Emma Delta. Eating healthfullyis easy to do when you have the money to dine on wild Alaskan salmon, arugula and fresh raspberries. But is it is possible to eat well on a tight budget? Sergei L. Magnitsky, a lawyer who was jailed as he tried to expose government tax fraud, died four years ago in a Russian prison after being denied proper medical care.
If you're like most people trying to do the right thing, you have probably spent time pondering the nutritional merits of many foods.
JERUSALEM - Traffic has come to a standstill
on major roads across Israel as activists hold a nationwide five-minute protestto draw attention to the plight of a captured Israeli soldier still held by Palestinian militants. DAMMAM, SAUDI ARABIA - Three people were injured when police opened fire during a protest in eastern Saudi Arabiaon Thursday, according to a witness and a Saudi official.
The first stage of blood clotting is the formation of a plug, seen here, which ismade up of platelets (seen in gold) aquaponics 4 you called von Willebrand Factor (vWF), seen in red. The vWF structures are normally present in blood incoiled up form, but in the presence of the flow from a bleeding wound they unfurl to form long, sticky strands, which bind the platelets together.Image: Hsieh ChenTens of thousands of Brazilians took to the streets on Wednesday in new demonstrations calling for a crackdown on corruption and better public services, just a day after Congress ceded to some of the key demands galvanizing protests across the country.
Since a vicious, high-profile attack on several Pakistani schoolgirls in October, the Talibanâ€™s violent campaign against girlsâ€™education in northwestern Pakistan has continued unabated. In their version of the parabolic trough (shown above) Wang and Miljkovic use three concentric tubes.
To maximize solar energy capture, they coat the outside surface of the middle tube with a selective absorber. Then, to keep the captured heat from escaping, they place that tube inside an outer glass tube, with a vacuum between them. The system thus absorbs as much sunlight and emits as little heat as possible. They then incorporate two technologies that increase efficiency and decrease cost and complexity.
To get rid of the energy-consuming mechanical pump, they move the captured heat to the point of consumption using a "thermosyphon" â€” the central tube in the diagram.
In this arrangement, the tube is only partially filled with a specially selected working fluid that evaporates when heated by the sun. The vapor that forms rises and flows naturally through the tube until it reachesgoogle sniper surface, where it condenses, releasing its heat. Because the system is designed with an upward tilt, gravity then forces the condensed fluid to flow back down to the area of the hot solar absorber, where it undergoes the heat-gathering, heat-releasing cycle again.
The thermosyphon not only transfers the heat without mechanical assistance but also does it extremely efficiently. "In a thermosyphon, you utilize the phase change of a liquid â€” the vaporization and subsequent condensation â€” to move the heat towhere you want it," says Wang. "It's as if it were a very, very good thermalconductor â€” much better than, say, diamond, which is one of the best solid conductors."
The second technology they incorporate provides a simpler means of generating electricity than that used in a conventional parabolic-trough system. Instead of raising steam to runa generator, they use a TE material, strategically located to maintain the temperature difference that causes electricity to flow.
As shown in the diagram, the TE material is incorporated in the form of "legs" thatrun between the absorber wall and the exterior surface of the thermosyphon, spaced at regular intervals with avacuum in the gaps between them. In
configuration, heat from the absorber surface travels through the TE legs to the thermosyphon, where it
is removed by the vaporization of the working fluid.
As a result, each leg has one end attached to the hot absorber wall and the other attached to the constantly cooled exteriorforex megadroid thermosyphon.
The temperature difference is maintained, and current flows.
The thermoelectric advantage TE devices are an attractive electricity-generating choice for several reasons.
An obvious advantage is that they involve no moving parts, so they are simple, durable, and robust. Photovoltaic (PV) cells are likewise a solid-state system, and they are far moreefficient at turning solar energy into electricity than TE materials are. But to work properly,PVs must be extremely pure and perfect, so making them involves carefully controlled and costly processes. In contrast, TEsactually work better when they are flawed; so even if rare materials are used, they can be fabricated using bulk manufacturing techniques.
Perhaps more important, while conventional PV cells do not operate well at high temperatures, TE materials thrivein the heat. "That's an important advantage," says Miljkovic.
"We can use our system at high temperatures. And in mechanical engineering, high temperatures are generally good.Systems â€” especially any electric power generation cycle â€” are a lot more efficientwhen operating at higher temperatures."
Efficiency and heat output of various system designs Author, who wrote the horror classic The Rats, died peacefully at his home in Sussex, his publisher hasannouncedThe best-selling horror author James Herbert, "one of the giants of popular fiction", has died aged 69, his publisher has announced.Herbert, who wrote horror classicThe Rats, passed away peacefully in bed at his home in Sussex on Wednesday morning, Pan Macmillan said.He is survived by his wife Eileen, whom he married in 1967, and their three daughtersforex growth bot and Casey.Jeremy Trevathan, his editor for 10 years, and a Macmillan publisher, said: "Jim Herbert was one of the keystone authors in a genre that hadits heyday in the 1970s and 1980s."It's a true testament to his writing and his enduring creativity that his books continued to behuge bestsellers right up until his death."He
has the rare distinction that his novels were considered classics of the genre within his lifetime. His death marks the passing of one of the giants of popular fiction in the 20th century."guardian.co.uk © 2013 Guardian News and Media Limited or its affiliated companies.
All rights reserved. | Use of this content is subject to our Terms & Conditions | More Feeds Stephen Yablo, professor of linguistics and philosophy, for â€œsubject matter, seeing-As, and semantics.â€ The Senate is headedfor a showdown over the filibuster. Democrats and Republicans are locked in a struggle that brings to mind the ColdWar deterrence strategy of mutually assured destruction. This theory held that the nuclear arsenals ofthe
Soviet Union and the United States could each annihilate the other, so neither would dare launch anattack. Under Senate
Rule 22, a two-thirds majority is needed to end debate and change the rules.
Democrats are threatening to invoke the unprecedented claim that only a simple majority is required. They used to say the simple majority, or the â€œnuclear option,â€ could be used only on the first dayof a new Congress. Theyâ€™ve dropped that nuance, asserting that it may be used at any moment.
Majority Leader Harry Reid is counting votes. Read full article