Monday, July 13, 2009

Natural Gas Generators | Gas Electric Generator

Natural gas generators usage should generally increase as it is the cleanest burning fossil fuel. Compared with oil and coal, natural gas generators produce lower emissions of nitrogen, sulfur, and greenhouse gasses like carbon dioxide. Natural gas generators also do not produce a pungent odor like a gasoline or diesel fueled one would. For people with homes powered with some natural gas, the comparison of the gas bill and the electricity bill will definitely show how much cheaper gas is. Even though natural gas electricity generation is used much less in homes, mainly for ranges, oven, heating water, and others, a natural gas generators can save up to 40% more than gasoline and diesel.


Now that we know natural gas generators are cleaner and cheaper, it is not hard to see that they are more efficient. For residential and business electrical power generation using natural gas, the fuel supply is already supplied and there is no need to purchase extra fuel and store it. Gas lines are already in place, delivering natural gas that can be used by power generators. For a portable natural gas generators, fuel storages similar to propane tanks for many barbecue grills can be bought and transported fairly easily to remote areas to provide electrical energy.



Natural gas is a very efficient fuel for powering emergency or portable generator. When it comes to providing power at an affordable cost, natural gas is probably the best for non renewable resources.


Although natural gas is not the perfect fuel replacement, it is a good cheap and clean alternative that should rise significantly in generator usage.


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Wednesday, June 24, 2009

Solar Energy Car | Solar Electric Car


A solar vehicle is an electric vehicle powered by a type of renewable energy, by solar energy obtained from solar panels on the surface (generally, the roof) of the vehicle. Photovoltaic (PV) cells convert the Sun's energy directly into electrical energy. Solar vehicles are not practical day-to-day transportation devices at present, but are primarily demonstration vehicles and engineering exercises, often sponsored by government agencies.
Solar cars combine technology typically used in the aerospace, bicycle, alternative energy and automotive industries. The design of a solar vehicle is severely limited by the energy input into the car (batteries and power from the sun). Virtually all solar cars ever built have been for the purpose of solar car races (with notable exceptions).


Solar cars are powered by the sun's energy. The main component of a solar car is its solar array, which collect the energy from the sun and converts it into usable electrical energy. The solar cells collect a portion of the sun's energy and stores it into the batteries of the solar car.



The car weighs in at around 400 kilograms with two occupants ballasted to 80kg each and uses mainly carbon fibre throughout its construction. It also uses aluminium, kevlar and carbon kevlar composite parts, this is what makes it possible to build such a lightweight vehicle.


As far as suspension and steering goes this car is very similar to any road car, however, it is all machined from aluminium making it very light. The wheels are made from carbon fibre and use Michelin low rolling resistance solar car tyres.

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Friday, June 12, 2009

review Iphone 3gs


Apple has reveal a new iPhone with an improve camera, better battery life and more memory, and cut the price of the iPhone 3G immediately.

The iPhone 3GS will launch on 19th June in the US and the UK, where exclusive carrier O2 will charge GBP 440.40 for 16GB and GBP 538.30 for 32GB pay-and-go models.

Monthly plans lock you in for 18 or 24 months and reduce the price of the hardware accordingly.

The existing 8GB iPhone 3G will now be sold for GBP 342.50 on pay-and-go and under GBP 100 on the two lowest 18-month tariffs, or for free on any of the higher or 24-month versions.

Speaking at the 2009 Worldwide Developer's Conference in San Francisco, Apple said the iPhone 3GS - the "S" stands for "speed" - introduces a 3-megapixel autofocus camera that also captures video at 30FPS, and uses OpenGL ES 2.0

It also has a built-in digital compass (er), support for 7.2Mbps HSDPA, and voice controls that allow you to dial numbers without dialling.

More significantly, Apple says the battery life has been improved to five hours talk time, nine hours on Wi-Fi and 30 hours of audio playback. The current iPhone 3G lasts about seven minutes doing anything.

19th June is also the launch date for the new iPhone 3.0 firmware, which is compatible with existing iPhone 3G and iPod Touch models.

Apple said yesterday that it will also introduce push notification options for developers, make Google Maps available in-app and allow for peer-to-peer networking for paid applications.


The Fastest iPhone Ever
The first thing you’ll notice about iPhone 3G S is how quickly you can launch applications. Web pages render in a fraction of the time, and you can view email attachments faster. Improved performance and updated 3D graphics deliver an incredible gaming experience, too. In fact, everything you do on iPhone 3G S is up to 2x faster and more responsive than iPhone 3G.


Video
Now you can shoot video, edit it, and share it — all on your iPhone 3G S. Shoot high-quality VGA video in portrait or landscape. Trim your footage by adjusting start and end points. Then share your video in an email, post it to your MobileMe gallery, publish it on YouTube, or sync it back to your Mac or PC using iTunes.





3-Megapixel CameraThe new 3-megapixel camera takes great still photos, too, thanks to built-in autofocus and a handy new feature that lets you tap the display to focus on anything (or anyone) you want.


more info http://www.apple.com/iphone/iphone-3g-s/
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Tuesday, June 9, 2009

AMD Opteron Processor

The Opteron is AMD's x86 server processor line, and was the first processor to implement the AMD64 instruction set architecture (known generically as x86-64). It was released on April 22, 2003 with the SledgeHammer core (K8) and was intended to compete in the server/workstation market, particularly in the same segment as the Intel Xeon processor. Processors based on the AMD K10 microarchitecture (codenamed Barcelona) were announced on September 10, 2007 featuring a new quad core configuration.
Professionals who need cuttingedge 32- and 64-bit performance choose workstations powered by AMD Opteron processor. Loaded with advanced power management features and built on AMD's revolutionary Direct Connect Architecture, which provides outstanding system level performance, platforms based on AMD Opteron processor provide ideal solutions for customers running applications in fields such as engineering, manufacturing, financial, entertainment, oil and gas, life sciences, or others that require world class computational performance.


Multi Processor Features:

In multi processor systems (more than one Opteron on a single motherboard), the CPUs communicate using the Direct Connect Architecture over high speed Hyper Transport links. Each CPU can access the main memory of another processor, transparent to the programmer. The Opteron approach to multi processing is not the same as standard symmetric multiprocessing instead of having one bank of memory for all CPUs, each CPU has its own memory. Thus the Opteron is a Non Uniform Memory Access (NUMA) architecture. The Opteron CPU directly supports up to an 8 way configuration, which can be found in mid level
servers. Enterprise level servers use additional (and expensive) routing chips to support more than 8 CPUs (cores, ie 2x quad) per box.

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Sunday, May 24, 2009

Kingston ddr Memory | ddr Memory

DDR Memory (Double Data Rate Memory) is an evolutionary product built upon the foundation of older PC100/PC133 memory technology. Unlike SDRAM memory that supports one operation per the computer's clock cycle, DDR SDRAM memory can do two operations per clock cycle, thereby doubling the memory bandwidth over the corresponding single data rate SDRAM.


Kingston Technology Company is an active member of JEDEC, the computer industry's standards body which developed and finalized the specifications for the DDR SDRAM modules. Kingston's Director of Technology sits on the Board of Directors of JEDEC, elected to a position title of Vice Chairman at Large. Kingston's engineers actively participate in the memory technology subcommittees working on current and next generation memory products.
Kingston's DDR Memory payment efforts closely involve leading semiconductor, processor, chipset and motherboard manufacturers as well as PC OEMs.

DDR The Mainstream Memory Technology Through mid 2005:

DDR Memory was selected by the computer industry to be the mainstream memory technology to replace SDRAM memory. By 2005, it was used in many different platforms, including desktop PCs, servers, notebooks, compact and sub-compact computers, and networking/communications platforms.
DDR memory was selected because of its increased performance as well as its low cost premium over SDRAM, since DDR can easily be manufactured by existing semiconductor fabrication plants and can be built and tested without significant capital investments. DDR Memory delivers increased memory bandwidth and performance over SDRAM memory for many business, ultimedia, and entertainment applications.



Kingston DDR Modules:

Kingston has a comprehensive line of DDR modules for desktop PCs, servers, notebooks,compact and sub-compact computers and networking/communications applications.

* ECC or non-ECC modules.

* Unbuffered DDR DIMMs.

* Registered DDR DIMMs for servers and high end workstations.

* High capacity stacked Registered DDR DIMMs for servers and workstations.

* Unbuffered DDR SO DIMMs for portable PCs or communications/networking applications.

* Unbuffered Micro DIMMs for portable, compact and subcompact PCs, and
communications/networking applications.

* Custom DDR modules for special networking, communications or custom applications.

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Tuesday, May 12, 2009

Computer Hard Drive Data Recovery | Hard Disk Data Recovery


Data recovery:

Data recovery is the process of salvaging data from damaged, failed, corrupted, or inaccessible secondary storage media when it cannot be accessed normally. Often the data are being salvaged from storage media formats such as hard disk drives, storage tapes, CDs, DVDs, RAID, and other electronics. Recovery may be required due to physical damage to the storage device or logical
damage to the file system that prevents it from being mounted by the host operating system.
The most common "data recovery" issue involves an operating system (OS) failure (typically on a single disk, single-partition, single OS system), where the goal is to simply copy all wanted files to another disk.

This can be easily accomplished with a Live CD, most of which provide a means to 1) mount the system drive, 2) mount and backup disk or media drives, and 3) move the files from the system to the backup with a file manager or optical disc authoring software. Further, such cases can be mitigated by disk partitioning and consistently moving valuable data files to a different partition from the replaceable OS system files.


The second type involves a disk level failure such as a compromised file system, disk partition, or a hard disk failure in each of which the data cannot be easily read. Depending on the case, solutions involve repairing the file system, partition table or MBR, or hard disk data recovery
techniques ranging from software based recovery of corrupted data to hardware replacement on a physically damaged disk. These last two typically indicate the permanent failure of the disk, thus "recovery" means sufficient repair for a one time recovery of files. A third type involves the process of retrieving files that have been deleted from a storage media. Although there is some confusion as to the term, the term "data recovery" may be used to refer to such cases in the context of forensic purposes or spying.
Every hard drive runs a type of File System, a method by which the operating system installed can organise data and free space in a way that it can be written to and read from. Each physical disk can be split up into many partitions, each partition can in turn appear as a logical drive (addressed C:, D:, E: etc...). This guide will only deal with the 2 primary partition types used for Windows Operating Systems - FAT16/32 and NTFS.

NTFS Recovery:

NTFS (NT File System) is now the most common File System, and it is used by Windows NT/XP. FAT-32 is used by Windows 98 and upwards, where as FAT 16 was used by DOS/3.1/95. The most recent operating systems are backwards compatible with older file systems, and can read/write to secondary disks based on the older file system.Both file systems organise the way the data is stored by using a Master Boot Record (MBR) and a Partition Table. These are found in the first sector of the drive, and determine how the disk structure is organised and instructs the computer which partition to boot from.

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Thursday, May 7, 2009

Amazon's Bigger Kindle The Kindle DX may be better suited to reading




Six higher-learning institutions will also start Kindle pilot programs this fall: Arizona State University, Case Western University, Pace University, Princeton University, Reed College, and the University of Virginia. Barbara Snyder, president of Case Western, says that her university plans to select a group of 40 students to use the Kindle DX and will compare their performance with that of students in the same classes who don't use the Kindle. "If it helps learning, we're certainly interested in going forward," Snyder says.

At today's launch event, Bezos said that Amazon's newest Kindle is meant to maintain the momentum built up by the previous two devices. For titles that come in Kindle format, he said that Kindle sales now make up 35 percent of Amazon's total for each--up from 13 percent in February, when the Kindle 2 was announced.



The company now hopes to attract more users by delivering a device that can be used to read larger books and documents. "We print more paper now than ever before," Bezos said, suggesting that users aren't satisfied with reading digitally when large, complex pages are squeezed onto a small screen. But customers will have to pay a hefty price for the larger screen: the DX will cost $489 ($130 more than its smaller relative, the Kindle 2) when it starts shipping this summer.

Richard Shim, an analyst with IDC, says that the price of the new Kindle could look affordable to students when compared with the high cost of a semester's worth of textbooks. "This may be significant for democratizing the Kindle," he says.

Students may also enjoy the convenience of carrying all of their books in one light device, Shim says, but he suspects that only textbooks that lack color will work well on the product. Although English and history books probably won't suffer, he says, textbooks that gain significant value from full-color diagrams are likely to look less good in the format.

As for the new Kindle's impact on newspapers, Shim says that the device could help restore the concept of reading a publication as a whole, instead of scanning single articles on the Internet. Perhaps best of all for periodicals, Shim says, is that Kindle users pay for their content. "I think there's a lot of opportunity for newspapers to reengage with readers," he says.

Today, Amazon founder and CEO Jeff Bezos unveiled the Kindle DX, a larger version of the company's flagship e-reader, with dimensions better suited to reading textbooks, newspapers, and PDF documents.

The Kindle DX was launched on the campus of Pace University, in New York City, just three months after Amazon announced the Kindle 2--an improved version of the original device. While experts agree that the Kindle DX, which comes with a 25-centimeter screen, is well designed and promising, some still question how successfully it will replace paper and ink.

To coincide with the launch of the Kindle DX, Amazon announced partnerships with several universities and newspapers. The newspapers involved are no doubt hoping to see electronic readers help revive their business models, which have been weakened by falling circulation figures, lower online advertising rates, and increased competition from the Web. The New York Times, the Washington Post, and the Boston Globe will start pilot marketing programs in the summer, offering readers a cheaper device for a subscription commitment.

At the event, Arthur Sulzberger, chairman of the New York Times, said that the Kindle DX now provides an e-reader experience that is as satisfying as that of reading print. But Sulzberger said that the New York Times and the Boston Globe would only offer reduced subscription rates for DX readers in areas where home delivery is not available.

David Weir, a media consultant with a daily blog on the media industry at Bnet, says that mobile devices such as the Kindle are more suited to preserving a periodical's brand than the Internet is, but he's skeptical about the DX's larger size. "The Kindle may be headed in the exact wrong direction," Weir says, noting that mobile devices have generally succeeded best when made smaller.

Although Amazon's sales of the Kindle have been strong, Weir argues that the device has yet to click with a mainstream audience, and he has doubts about its staying power. "If I were advising any media company," Weir says, "I would say, Don't ever get too romantically involved with a platform. Just when you love them, they leave you."
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