Monday, March 14, 2011

Another Japan nuclear reactor fails

Another nuclear reactor at the Fukushima No. 1 facility in Japan has lost its emergency cooling capacity, according to the Associated Press, bringing to three the number of reactors at that facility to fall prey to Friday's magnitude 8.9 earthquake and tsunami. Added to failure of three reactors at Fukushima No. 2, the count is now six overall.

So far, the only reactor that seems to pose an immediate risk of widespread danger is one of the two shut-down reactors at Fukushima No. 1, also known as Fukushima Daiichi, which was disabled by an explosion overnight that destroyed the building housing the reactor and the backup cooling system.

However, officials with Tokyo Electric Power Co., which owns the facilities about 150 miles northeast of Tokyo, reported to the International Atomic Energy Agency on Saturday that the reactor containment vessel, which houses the radioactive core, remained intact and that they were pumping seawater into the vessel to cool it. The action seems to be working, officials said, and there have been no further reports of radiation escaping from the site.

As part of an automatic safety procedure, control rods were inserted into the cores of the reactors following the earthquake, which stops production of electricity. But the cores continue to generate heat for several days after shutdown and must be continuously cooled by pumping water over them and through cooling towers.

Backup generators powering the pumps at the first five disabled reactors failed almost immediately after the earthquake, apparently inactivated by exposure to seawater from the tsunami that swept through the seaside plants. The facilities had to rely on backup batteries that last up to eight hours until additional batteries and generators could be brought in.

Although the company has released no details about the sixth reactor, it appears the diesel generators there worked for a couple of days before they too finally gave out.



Japan's Fukushima nuclear plant faces new reactor problem

TOKYO (Reuters) – A quake-hit Japanese nuclear plant reeling from an explosion at one of its reactors has also lost its emergency cooling system at another reactor, Japan's nuclear power safety agency said on Sunday.

The emergency cooling system is no longer functioning at the No.3 reactor at Tokyo Electric Power Co's Fukushima Daiichi nuclear power facility, requiring the facility to urgently secure a means to supply water to the reactor, an official of the Japan Nuclear and Industrial Safety Agency told a news conference.

On Saturday, an explosion blew off the roof and upper walls of the building housing the facility's No. 1 reactor, stirring alarm over a possible major radiation release, although the government later said the explosion had not affected the reactor's core vessel and that only a small amount of radiation had been released.

The nuclear safety agency official said there was a possibility that at least nine individuals had been exposed to radiation, according to information gathered from municipal governments and other sources.

(Reporting by Risa Maeda; Editing by Edmund Klamann)



Friday, November 12, 2010

Download User Guide and Safety Guide for Apple iPhone 4

After the success of iphone 3G and iphone 3Gs now apple presents a series of successors of the Apple iPhone 4.It is expected that this phone could hamper the success of a new android mobile phones and smart like the Xperia X10 and HTC EVO 4G.The phone is equipped with four iOS 4 operating system has a capacity four times more slender, four times more sharply, and four times faster than the previous iPhone.

As a form of service to consumers, particularly shoppers iphone 4, apple party has provided iPhone User Guide (For iOS 4 Software) and the iPhone 4 – Important Product Information and Safety Guide yand can be downloaded at Apple’s official site.

This is intended to help users iphone 4 in difficulty when first using this new iphone.

For iPhone Users Guide (For iOS 4 Software) contains instructions for use iOS 4 operating system that existed at the iphone 4 .And recognize the various existing features in the operating system.

While for the iPhone 4 – Important Product Information and Safety Guide contains information about the product itself and the iphone 4 ways to keep this phone can still work optimally and maximally and about troubleshooting iphone 4.

As users iphone 4 you have to have both as a complete guide for your phone.

You can download User Guide and Safety Guide for iphone 4 from the original source link here iPhone User Guide (For iOS 4 Software) and iPhone 4 – Important Product Information and Safety Guide.I hope this user guide is useful for you.


HP Pavilion dv6-3050us Specs,Price,and Video Review

Hp comes again with its latest notebooks that use AMD processors are HP Pavilion dv6-3050us.This notebook truly amazing because it is equipped with various features such qualified 2.0GHz AMD Phenom II Quad-Core Mobile Processor N930, 4GB DDR3 System Memory (2 DIMM), and 640GB (5400RPM) SATA hard drive.

In addition there are many different features so you do not hesitate to buy a new notebook from HP.Starting from 15.6? diagonal High-Definition HP BrightView LED Display (1366 x 768), ATI Mobility Radeon HD 5650 graphics, webcam with integrated digital microphone, wireless LAN 802.11b/g/n WLAN & Bluetooth, and 6-cell lithium-ion battery. The laptop runs on Genuine Microsoft Windows 7 Home Premium 64-bit operating system.

HP Pavilion dv6-3050us Specs

* AMD Phenom II quad-core N930 processor
2.00GHz , 2MB L2 Cache
* 4GB DDR3 system memory
Gives you the power to handle the most power-hungry
applications and tons of multimedia work
* 640GB SATA hard drive
Store 425,000 photos, 180,000 songs or 336 hours of HD video
and more
* 15.6? diagonal HD BrightView LED widescreen display
ATI Mobility Radeon HD 5650 graphics with 1024MB DDR3 and up
to 2714MB total graphics memory
* LightScribe SuperMulti double-layer DVD burner
Watch DVD movies on your computer; read and write CDs and
DVDs in multiple formats
* 10/100/1000 Gigabit Ethernet; 802.11b/g/n Wi-Fi
Connect to a broadband modem or a wired broadband router with
wired Ethernet, or wirelessly connect to a Wi-Fi signal or hotspot
with the 802.11b/g/n wireless connection built into your PC
* Built-in HP TrueVision Webcam with microphone
* 5-in-1 digital media card reader
* 6-cell lithium-ion battery
* HP SimplePass with integrated fingerprint reader
* Genuine Microsoft Windows 7 Home Premium 64-bit operating
* Microsoft Office Home and Student Edition 2007 (60-day trial)
* 6-cell Li-Ion battery

HP Pavilion dv6-3050us Price :

For HP Pavilion dv6-3050us best price is $899.99 (on Amazon)


Wednesday, October 20, 2010

Comparison of the Z400 and xw4600 Architectures

The HP Z400 is a new Intel? Xeon? based entry workstation, positioned above the HP xw4600 Personal Workstation. Itsarchitecture introduces significant improvements, including processor microarchitecture, memory controller architecture, and performance.Processor Technology: The Z400 uses the Intel? X58Express chipset to support the latest Quad Core Intel?Xeon? processor W3500 Series (Nehalem), includingprocessors up to 130W. These 45nm processors incorporatean integrated 3-channel memory controller, microarchitectureimprovements and large L3 cache to provide significantlybetter performance than the previous generation (Penryn).The Z400 uses the Intel? QuickPath Technology to connectthe processor and I/O controller with speeds up to6.4 GT/s, significantly increasing peak aggregate databandwidth over the xw4600.Memory Technology: The Z400’s unbuffered DIMMs(UDIMMs) are based on DDR3 1333MHz technology, andare still ECC-protected. Three direct attach memory channelsenable low latency accesses and fast data transfer, providingsignificant performance advantages over the xw4600architecture, which has two memory channels. Systemmemory sizes up to 16GB1 (using 4GB DIMMs) aresupported, a signicant increase over the 8GB system limit ofthe xw4600. DIMMs should be distributed across all threememory channels for optimal performance.Graphics: The Z400 continues support for PCIe Gen2(PCIe2) bus speeds and can support dual PCIe Gen2 graphics cards in PCIe2 x16 slots. The Z400 allocates a total of 150W for graphicscards. A single graphics card of up to 150W can be supported in the primary graphics slot, to enable cutting edge graphics. If theprimary graphics card consumes less than 150W, a second graphics card may be supported in the second Z400 PCIe2 x16 slot, subjectto the overall 150W system limit for graphics.I/O Slots: The Z400 implements an Intel? X58 I/O controller toprovide a total of six high-performance Graphics and I/O slots. Inaddition to the two full x16 PCIe Gen2 slots, two additionalPCIe x8 (4) slots (x8 mechanically, x4 electrically) on the Z400provide extra I/O bandwidth for high speed I/O cards. Openended PCIe x8 connectors allow the user to install x16 physicalsize cards in the x8 (4) slots. Serial Attached SCSI (SAS) drives aresupported via a plug-in card.Other Features: SATA RAID modes 0, 1, 5 and 10 aresupported. eSATA (3.0 Gbps) is supported using an optionaladapter. The Z400 provides 8 external and 4 internal USB 2.0ports. The 475W power supply is 85% efficient and enablesENERGY STAR v5 qualified configurations. HP WattSavertechnology enables support of the European Union EuP power limitof 1W in off mode. HP Quiet Fan Technology enables quiet systemoperation. The Intel Xeon W3500 Series workstation processorsprovide several benefits over Core i7 desktop processors, includingsupport for ECC memory for increased system reliability and Direct Cache Access2 for network performance.

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