Merek Laptop Terbaik 2012 Tabel Penjelasan Lengkap

Merek Laptop Terbaik 2012 di peringkatkan berdasarkan banyak faktor yang bisa menentukan Merek apa saja yang pantas menyandang terbaik untuk komputer jinjing tersebut, baik dari desain, spesifikasi perangkat keras (hardware), perangkat lunak (software), kinerja dan juga berbagai dukungan yang diberikan dan ditawarkan dari setiap Laptop sehingga bisa menjadi bahan dalam menentukan penilaian Merk Laptop Terbaik. Penilain juga berdasarkan produsen laptop dari Daftar Merek Laptop sebagai perusahaan yang mensuport dalam penyediaan yang dibutuhkan dan juga beberapa hal lainnya.

Secara lebih baik lagi penentuan Merek Laptop Terbaik di tahun 2012 di periksa dengan beberapa alasan sebagai penjelasan secara lengkap dari berbagai segi penilaian diantaranya dari kualitas, kepuasan para pelanggan, kemampuan berinovasi dan juga beberapa kriteria yang lainnya sebagai patokan yang diperlukan.

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B Vitamins and the Aging Brain Examined

U.S. Department of Agriculture (USDA) nutritionist Lindsay H. Allen has collaborated in ongoing research that has taken a closer look at the role these nutrients may play in preventing decline in brain function. The investigations, led by Mary N. Haan of the University of California-San Francisco, are part of the multiyear Sacramento (Calif.) Area Latino Study on Aging, or "SALSA." Begun in 1996, the study attracted nearly 1,800 Hispanic seniors, ages 60 to 101, as volunteers.

According to Allen, the research is needed because many studies of B vitamins and brain function have given inconsistent or conflicting results. Allen is director of the Agricultural Research Service (ARS) Western Human Nutrition Research Center in Davis, Calif. ARS is the chief intramural scientific research agency of USDA. Scientists from the University of California-Davis (UCD) and the UCD Medical Center also are collaborating in the research.

An analysis of volunteers' blood samples showed that lower levels of one B vitamin, folate, were associated with symptoms of dementia and poor brain function, also called "cognitive decline," as determined by standard tests of memory and other factors. The impairments were detectable even though less than 1 percent of the volunteers were actually deficient in folate.

In women, but not men, low levels of folate were associated with symptoms of depression. In fact, female volunteers whose plasma folate levels were in the lowest third were more than twice as likely to have symptoms of depression as volunteers in the highest third. That finding provided new evidence of an association between lower blood folate and depression. Depression is already known to affect brain function.

In research with vitamin B-12, the SALSA team determined that a protein known as holoTC, short for holotranscobalamin, might be key to a new approach for detecting cognitive decline earlier and more accurately.

The researchers have published these and other findings, beginning in 2003 and continuing through this year, in the American Journal of Clinical Nutrition, Clinical Chemistry and Laboratory Medicine, The European Journal of Clinical Nutrition, The Journal of Nutrition, and The Journal of Nutrition, Health, and Aging.

Source: sciencedaily.com

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NASA's Great Observatories Witness a Galactic Spectacle

(Science News)A new image of two tangled galaxies has been released by NASA's Great Observatories. The Antennae galaxies, located about 62 million light-years from Earth, are shown in a new composite image from the Chandra X-ray Observatory (blue), the Hubble Space Telescope (gold and brown), and the Spitzer Space Telescope (red). The Antennae galaxies take their name from the long, antenna-like arms seen in wide-angle views of the system. These features were produced in the collision.

The collision, which began more than 100 million years ago and is still occurring, has triggered the formation of millions of stars in clouds of dusts and gas in the galaxies. The most massive of these young stars have already sped through their evolution in a few million years and exploded as supernovas.

The X-ray image from Chandra shows huge clouds of hot, interstellar gas, which have been injected with rich deposits of elements from supernova explosions. This enriched gas, which includes elements such as oxygen, iron, magnesium and silicon, will be incorporated into new generations of stars and planets. The bright, point-like sources in the image are produced by material falling onto black holes and neutron stars that are remnants of the massive stars. Some of these black holes may have masses that are almost one hundred times that of the sun.

The Spitzer data show infrared light from warm dust clouds that have been heated by newborn stars, with the brightest clouds lying in the overlap region between the two galaxies. The Hubble data reveal old stars and star-forming regions in gold and white, while filaments of dust appear in brown. Many of the fainter objects in the optical image are clusters containing thousands of stars.

NASA's Jet Propulsion Laboratory, Pasadena, Calif., manages the Spitzer Space Telescope mission for NASA's Science Mission Directorate, Washington. Science operations are conducted at the Spitzer Science Center at the California Institute of Technology, also in Pasadena. Caltech manages JPL for NASA.

Source:sciencedaily.com

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Stone Age Remains Are Britain's Earliest House

(Science News), The team from the Universities of Manchester and York reveal today that the home dates to at least 8,500 BC -- when Britain was part of continental Europe.

The research team unearthed the 3.5 metres circular structure next to an ancient lake at Star Carr, near Scarborough, a site comparable in archaeological importance to Stonehenge.

The team are currently excavating a large wooden platform next to the lake, made of timbers which have been split and hewn. The platform is the earliest evidence of carpentry in Europe.

A large tree trunk has also been uncovered by the team. Despite being 11,000 years old it is well preserved with its bark still intact.

The house predates what was previously Britain's oldest known dwelling at Howick, Northumberland, by at least 500 years.

Dr Chantal Conneller and Barry Taylor from The University of Manchester with Dr Nicky Milner from the University of York have been working at Star Carr since 2004.

The house, which was first excavated by the team two years ago, had post holes around a central hollow which would have been filled with organic matter such as reeds, and possibly a fireplace.

The site was inhabited by hunter gatherers from just after the last ice age, for a period of between 200 and 500 years.

According to the team, they migrated from an area now under the North Sea, hunting animals including deer, wild boar, elk and enormous wild cattle known as auroch.

Though they did not cultivate the land, the inhabitants did burn part of the landscape to encourage animals to eat shoots and they also kept domesticated dogs.

Dr Milner said: "This is a sensational discovery and tells us so much about the people who lived at this time.

"From this excavation, we gain a vivid picture of how these people lived. For example, it looks like the house may have been rebuilt at various stages.

"It is also likely there was more than one house and lots of people lived here.

"The platform is made of hewn and split timbers; the earliest evidence of this type of carpentry in Europe. And the artefacts of antler, particularly the antler head-dresses, are intriguing as they suggest ritual activities."

Dr Conneller said: "This changes our ideas of the lives of the first settlers to move back into Britain after the end of the last Ice Age.

"We used to think they moved around a lot and left little evidence. Now we know they built large structures and were very attached to particular places in the landscape."

Barry Taylor added: "The ancient lake is a hugely important archaeological landscape many miles across.

"To an inexperienced eye, the area looks unremarkable -- just a series of little rises in the landscape.

"But using special techniques I have been able to reconstruct the landscape as it was then.

"The peaty nature of the landscape has enabled the preservation of many treasures including the paddle of a boat, the tips of arrows and red deer skull tops which were worn as masks.

"But the peat is drying out, so it's a race against time to continue the work before the archaeological finds decay."

English Heritage recently entered into a management agreement with the farmers who own the land at Star Carr to help protect the archaeological remains.

Keith Emerick, English Heritage Inspector of Ancient Monuments, explained:

"We are grateful to the landowners for entering into this far reaching agreement.

"Star Carr is internationally important, but the precious remains are very fragile.

"A new excavation currently underway will tell us more about their state of preservation and will help us decide whether a larger scale dig is necessary to recover information before it is lost for ever."

The research has been made possible by a grant from the Natural Environment Research Council, early excavation funding from the British Academy, and from English Heritage who are about to schedule the site as a National Monument . The Vale of Pickering Research Trust has also provided support for the excavation works.

Source : sciencedaily.com

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