HP Breaks the 24-Hour Laptop Battery Life Barrier
Holy moly, talk about being charged up! HP claims its new EliteBook 6930p can deliver up to 24 hours of battery runtime, or 5 hours longer than Dell's Latitude E6400, provided it comes equipped with an optional ultra-capacity hp 338794-001 battery,hp 361742-001 battery.
“All-day computing has been the holy grail of notebook computing,” said Ted Clark, senior vice president and general manager, Notebook Global Business Unit, HP. “With the HP EliteBook 6930p, customers no longer have to worry about their hp 371785-001 battery,hp 372772-001 battery running out before their work day is over.”
While we can't rule out a dose of voodoo magic as a contributing factor, much of the credit goes to the Intel 80GB SSD drive and 14.1-inch mercury-free Illumi-Lite LED display, both of which hp 398876-001 battery,hp 417066-001 battery says are required add-ons to make the feat possible. And that's not with a wimpy processor either - the least powerful CPU in the 6930p's lineup is an Intel Core 2 Duo P8400. Toss a spill resistant keyboard and an inner magnesium shell into the mix and HP has one tough mother on its hands.
DNA confirms coastal trek to Australia
DNA evidence linking Indian tribes to Australian Aboriginal people supports the hp 338794-001 battery,hp 361742-001 battery theory humans arrived in Australia from Africa via a southern coastal route through India, say researchers.
The research, lead by Dr Raghavendra Rao from the Anthropological Survey of India, is published in the current edition of BMC Evolutionary Biology.
One theory is that modern humans arrived in Australia via an inland route through central Asia but Rao says most scientists believe modern humans arrived via the coast of South Asia.
But he says there has never been any evidence to confirm a stop-off in India until now.
Rao and colleagues sequenced the mitochondrial genomes of 966 people from traditional tribes in India.
They report that several of the Indians studied had two regions of their mitochondrial DNA that were identical to those found in modern day Australian Aboriginal people.
The team compared Indian sequences with those from Aboriginal Australians collected in past studies.
Rao and colleagues used special computer programs to predict that a common ancestor existed, between the Indian population and Aboriginal Australians, up to 50,000 years ago.
Skeletal remains, dating back between 40 - 60,000 years from Lake Mungo in New South Wales, also support the hp 371785-001 battery,hp 372772-001 battery theory that modern human arrived in Australia at least half a century ago, he says.
Link through mothers
Rao says he and colleagues sequenced mitochondrial DNA because it is the best type of DNA to use for ancestral studies.
Mitochondrial DNA is passed on by mothers only and does not change much over time.
Evolutionary biologist Dr Jeremy Austin, of the University of Adelaide, says the new data "definitely supports the coastal route hypothesis".
He says that before this research was published, genetic markers from Aboriginal Australians were known to be hp 398876-001 battery,hp 417066-001 battery closely related to markers from traditional Indian and South East Asian peoples.
"But this is the first time people have been able to find these exact same mitochondrial DNA types inside and outside Australia," says Austin.
He says now that a mitochondrial DNA link has been found between tribal Indian populations and Aboriginal Australians it would be interesting to see if a connection exists through the Y chromosome, where DNA is passed only from fathers to sons.
Lithium-battery formulation help medical applications
EaglePicher Medical Power, a supplier of batteries to manufacturers of implantable medical devices, has recently introduced a lithium-CFX (carbon-monofluoride) battery chemistry. The technology, an enhancement of the company’s proprietary CFX-battery technology, results in a self-discharge rate of less than 1% per year at room temperature. Although lithium thionyl has a similar self-discharge rate, it increases rapidly with higher temperatures, making its use a liability in medical devices, especially implantable devices, such as pacemakers, which must operate at 98.6°F.
The CFX formulation also offers energy density of 180 Wh/l. Gregg Bruce, PhD, chief scientist at the company, estimates that this density is approximately 25% more than the density of hp laptop battery technologies that medical devices currently use. By using a CFX battery, battery-pack designers can choose between a larger battery that runs for 25% longer and a 25% smaller one with an equivalent runtime, an important feature for implantable medical devices.
The CFX formulation incorporates an end-of-life indicator to accurately predict hp 338794-001 battery depletion six months in advance, requiring fewer replacement surgeries for implantable medical devices. The indicator manifests itself as a sharp falloff in voltage yet still maintains adequate voltage and power to operate. The new technology will be available in a number of configurations at powers of less than 350 mAhr to 10 Ahr.