Wednesday 29 February 2012

World’s strongest Bite: Tyrannosaurus Rex


A study reveals that Tyrannosaurus rex had the most powerful bite of any creature that has ever walked the Earth. The research led by Dr Karl Bates from the biomechanics laboratory at the University of Liverpool. Then the scientists reproduced the full force of a bite by activating the muscles to contract fully snapping the digital jaws shut.



Previous studies had estimated that T. rex's bite had a force of 8,000-13,000 Newtons. The researchers discovered how T. rex's bite force changed as it grew. The maximum forces we found - up at the [back] teeth - were between 30,000 and 60,000 Newtons. These animals are extremes - one of the biggest carnivores that ever lived," he said. "So it tells you a lot about the limitations of biology.

Oetzi the Iceman's nuclear genome gives innovative insights


New clues have emerged in what could be described as the world's oldest murder case: that of Oetzi the Iceman, whose 5,300 year old body was revealed frozen in the Italian Alps in 1991. The study reveals the fuller genetic picture as laid out in the nuclei of Oetzi's cells. Oetzi's mitochondrial DNA had previously discovered some hints of his genesis when it was fully sequenced in 2008.



According to Albert Zink, from the Eurac Institute for Mummies and the Iceman in Bolzano, Italy, the nuclear DNA learn was a great leap onward in one of the most extensively studied specimens in science. It is most likely this stage of transition to an agrarian society that explains Oetzi's lactose bigotry.

Foreign nationals: Free HIV treatment on NHS


Foreign nationals are to be accessible free treatment for HIV on the NHS under plans backed by the government. There are a predictable 25,000 people with undiagnosed HIV in Britain, many of whom were born overseas. The suggestion will be introduced by the management in a constitutional gadget rather than as part of the legislation.



Critics assert the conclusion could on time so called health tourism and put the NHS under further economic strain. This group of people includes unsuccessful asylum seekers, students and tourists. According to Professor Jane Anderson, chairwoman of the British HIV Association, this is good information for people living in the UK who are HIV positive and also for public health in general.

Twitter associates among Datasift to release tweet records


Firms can search tweets back to January 2010 in order to plan marketing campaigns, aim significant users or yet try to predict certain events. Confidential financial records and tweets that have been deleted will not be indexed by the site. Companies are now capable to investigate and analyse up to two years of Twitter updates for market study purposes.



According to Barker, Datasift's marketing manager the company takes in roughly 250 million tweets each 24 hours, all of which are analyzed for content such as whether they were supposed in a helpful or negative tone. The fact that two years' worth of tweets can now be mined for information and the resulting 'insights' sold to businesses is a radical shift in the wrong direction.

Penguins amazing NZ relic reconstructed


In New Zealand, a large wiped out penguin has been reconstructed from fossil remnants discovered. The hard work was partially inspired by the bird's unusual body form, which is diverse from any other known penguin, living or destroyed. The team's work appears in the magazine of Vertebrate Paleontology.



New Zealand was an attractive location for penguins twenty five million years ago because it offered both food and safety. The name Kairuku comes from a Maori sound that slackly translates to diver who proceeds with food. Researchers used skeleton from two separate examples of the very old birds, by means of the skeleton of a modern king penguin as a guide.

Snow-white UK winters: Melting Arctic link to cold


A study shows the progressive reduction of Arctic sea frost is bringing colder, snowier winters to the UK and other areas of Europe, North America and China. It's possible that future winters will be colder and snowier, but there are some qualms. But less of the sea is frozen in autumn, it releases more heat, warming the environment. In turn, this reduces the power of the northern jet stream, which usually brings milder, wetter weather to Europe from the west.



Dr Scaife was concerned with another learning published last year that showed how small, normal changes in the Sun's output can also affect winter climate. The novel study is not the first to propose a causal relationship between low Arctic ice in autumn and Europe's winter weather. The researchers also found that the extra evaporation from the Arctic Ocean makes the air more humid, with some of the additional water content falling out as snow.