Saturday, February 23, 2008

US and India tie up for a strog military pact

The controversial Logistics Support Agreement (LSA) and expansion of US military sales to India are expected to figure prominently during the two-day visit of Defence Secretary Robert Gates from Tuesday.During the security dialogue, the two sides will review their strategic cooperation in various fields and explore ways to enhance the ties, the sources said.Gates will hold talks with Defence Minister A K Antony on bilateral cooperation and regional issues of mutual interest considering growing threat from terrorism emanating from India's neighbourhood.To be accompanied by a 50-member military-cum-business delegation, Gates is also likely to call on Prime Minister Manmohan Singh and meet External Affairs Minister Pranab Mukherjee and National Security Adviser M K Narayanan.The two sides are expected to discuss the progress on signing of LSA, under which the two countries will provide their bases, fuel and other kinds of logistic support to each other's fighters and warships.The agreement has been under negotiation for over a year, with India insisting that it be renamed.The pact is pending before the Cabinet Committee on Security (CCS) for clearance.The Left parties have opposed this agreement, arguing that it will make India a party to America's ''wrong'' designs.The US has, however, sought to allay fears, insisting that it would ''not bind'' India but benefit its military by improving its ''operational ability''.US Ambassador David Mulford recently said Indian military will need such type of cooperation and change as its capabilities grow.During Gates' visit, the two sides are also expected to discuss the Container Security Initiative , which India is ready to sign.The two countries will review broad cooperation in defence field and discuss ways to enhance it.Mulford said the defence relations between the two countries had witnessed ''enormous growth'' over the last few years, marked by exchange of visits and joint exercises.The US is looking forward to having cooperation on joint production of C-130J transport planes besides eyeing the contract for 126 multi-role fighter planes.

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Sandia National Laboratories and Stirling Energy Systems (SES) have set a new solar-to-grid system conversion efficiency record by achieving a 31.25 percent net efficiency rate. The old 1984 record of 29.4 percent was toppled using SES's "Serial #3" solar dish Stirling system at Sandia's National Solar Thermal Test Facility.
Serial #3 is part of a prototype six-dish model power plant at the Solar Thermal Test Facility that produces up to 150 kilowatts (kW) of grid-ready electrical power during the day. Each dish unit consists of 82 mirrors formed in a dish shape to focus the light to an intense beam.

The solar dish generates electricity by focusing the sun's rays onto a receiver, which transmits the heat energy to a Stirling engine. The engine is a sealed system filled with hydrogen. As the gas heats and cools, its pressure rises and falls. The change in pressure drives the pistons inside the engine, producing mechanical power, which in turn drives a generator and makes electricity.
The conversion efficiency is calculated by measuring the net energy delivered to the grid and dividing it by the solar energy hitting the dish mirrors. Auxiliary loads, such as water pumps, computers and tracking motors, are accounted for in the net power measurement.
"Gaining two whole points of conversion efficiency in this type of system is phenomenal," says Bruce Osborn, SES president and CEO. "This is a significant advancement that takes our dish engine systems well beyond the capacities of any other solar dish collectors and one step closer to commercialising an affordable system."
Lead Sandia project engineer Chuck Andraka says that several technical advancements to the systems led to the record-breaking solar-to-grid conversion efficiency. The first and probably most important advancement was improved optics. The Stirling dishes are made with a low iron glass with a silver backing that make them highly reflective -focusing as much as 94 percent of the incident sunlight to the engine package, where prior efforts reflected about 91 percent.
Other advancements to the solar dish-engine system that helped Sandia and SES beat the energy conversion record were a new, more effective radiator that also costs less to build and a new high-efficiency generator.
While all the enhancements led to a better system, the weather also played a pivotal role. "It was a 'perfect storm' of sorts," Andraka says. "We set the record on Jan. 31, a very cold and extremely bright day, a day eight percent brighter than normal." The temperature, which hovered around freezing, allowed the cold portion of the engine to operate at about 23 degrees C, and the brightness means more energy was produced while most parasitic loads and losses are constant. The test ran for two and a half hours, and a 60-minute running average was used to evaluate the power and efficiency data, in order to eliminate transient effects. During the testing phase, the system produced 26.75 kW net electrical power.
Osborn says that:
SES is working to commercialise the record-performing system and has signed power purchase agreements with two major Southern California utilities (Southern California Edison and San Diego Gas & Electric) for up to 1,750 megawatts (MW) of power, representing the world's two largest solar power contracts. Collectively, these contracts require up to 70,000 solar dish engine units.

Saturday, February 9, 2008

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The National Roads Safety Council has done extensive testing on a newly >designed seat belt. Results show that accidents can be reduced by as much >as 75% when the belt is properly installed. Correct installation is >illustrated below.......

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> Me and My Father> > When I was 4 Yrs Old : My father is THE BEST> > When I was 6 Yrs Old : My father seems to know everyone> > When I was 10 Yrs Old : My father is excellent but he is short tempered> > When I was 12 Yrs Old : My father was nice when I was little> > When I was 14 Yrs Old : My father started being too sensitive> > When I was 16 Yrs Old : My father can't keep up with modern time> > When I was 18 Yrs Old : My father is getting less tolerant as the days pass by> > When I was 20 Yrs Old : It is too hard to forgive my father, how could> my Mum stand him all these years> > When I was 25 Yrs Old : My father seems to be objecting to everything I do> > When I was 30 Yrs Old: It's very difficult to be in agreement with my> father, I wonder if my Grandfather was troubled by my father when he> was a youth> > When I was 40 Yrs Old: My father brought me up with a lot of> discipline, I must do the same> > > > > When I was 45 Yrs Old: I am puzzled, how did my father manage to raise all of us> > When I was 50 Yrs Old : It's rather difficult to control my kids, how> much did my father suffer for the sake of upbringing and protecting us> > When I was 55 Yrs Old: My father was far looking and had wide plans> for us, he was gentle and outstanding.> > When I became 60 Yrs Old: My father is THE BEST> > Note that, it took 56 Yrs to complete the cycle and return to the> starting point "My father is THE BEST "

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