Sunday, June 28, 2020

Last month, a study conducted by archæologist Dr. Naomi Martisius and other researchers concluded Neanderthals living in Europe tens of thousands of years ago were more sophisticated than previously thought. The now-extinct species used to carefully select bones from a particular animal species to manufacture their bone tools, the research showed. The research was published on May 8 in Nature’s Scientific Reports journal.

Dr Martisius and her team used five bone tools discovered from Neanderthals’ sites in southwest France for this research. Four of these bone tools were found in a site called Abri Peyrony and the other one was from Pech-de-l’Azé I. These tools were just a few centimetres in size and were about 50 thousand years old, Dr Martisius told Wikinews. Microscopy analysis of these bone tools called lissoirs (smoothers) suggested Neanderthals used these tools for working animal skin to leathers.

The study stated the fauna of the sites were primarily medium-sized ungulates such as reindeer, in one layer nearly 90%. Despite the overabundance of medium-sized ungulates, Neanderthals used ribs of large bovids for making lissoirs. Dr Martisius told Wikinews this was likely due to the physical characteristics of the bovid ribs, which were “thicker” and “stronger” as compared to the “thin and flimsy ribs” of reindeers. In order to check the origins of the bone tools, the researchers used a technology called non-destructive Zooarchæology by Mass Spectrometry (ZooMS).

Instead of damaging the bone artefacts in order to discover its origins, the researchers collected collagen from the plastic containers in which these artefacts were kept. Collagen is a type of protein. These bone artefacts were kept in plastic containers: some were kept for about five years, some for just a few months. During this time, the collagen proteins from bone tools were stuck to the walls of its plastic containers. The collagen samples collected from the walls of the containers are broken into smaller molecules called peptides by using a chemical enzyme called trypsin.

After the trypsin has broken collagen fibres into peptides, it is analysed using a technology called Matrix-assisted laser desorption/ionization (MALDI) Time-of-Flight mass spectrometer (ToF MS). The assisting matrix is a coloured compound. The acidic peptide is combined with the matrix, vapourised, and peptides are released. Some of them are positively-charged particles which travel across a vacuum tube in an electric field. Depending on the weight of the peptides, these molecules reach the end of the vacuum tube at different instances of time, forming a spectrum. These graphs are like unique fingerprints of a species: they are different for different species of animals. Looking at the database of such graphs, taxonomic identifications of the collagen proteins came be made.

All four bone tools from Abri Peyrony gave positive results and showed that the bones were made from large bovids, even though reindeer were more abundant during that time. One of the advantages of using bovid ribs over reindeer’s thin ribs was the bovid ribs would be more resistant to breaking during flexion, Dr Martisius said.

Dr Martisius said such non-destructive ZooMS analysis was previously conducted, but for tools no older than a few centuries. She said such an analysis had never been previously conducted for artefacts so ancient.

Wikinews caught up with Dr Martisius to discuss this research in-depth.

Tuesday, December 25, 2007

Last Tuesday in Taipei, Google Taiwan held an annual summary press conference named “Collective Intelligence & Innovation” (In Chinese: ?????????). With many products had already been presented to the public like wikis, blogs, and photo albums in the Web 2.0 era, Google served to provide lots of services like Google Apps, Google Maps and YouTube with suitable versions in Taiwan differing other countries this year.

Global Deputy Director of Google Kai-Fu Lee said: “The contents on the Internet were mostly limited with some copyright issue in the past, but after many products in the Web 2.0 era are presented, several contents are progressively released and opened to the public in the presence. As those factors, we [Google] hope developers in Taiwan can develop useful tools for local people to apply with people’s life.”

“In order to change minds in public, we [Google] conjoined some required elements into people’s life, and services on iGoogle in Taiwan are progressively more and newer because of the improvements of developers. We hoped a simple service can be multiplied with releases of useful and functional tools,” he also said.

Also in this conference, the Engineering Director of the Google Taiwan R&D Center Li-feng Chien also announced the achievements on the “Google Taipei Developers’ Day” and invited developers named Chi-pao Hu and Yi-ru Lin to share some actual applications on iGoogle.

Tuesday, August 26, 2008

Large herd animals may have the ability to detect earth’s magnetic field, concluded scientists in Germany in a report published in this week’s Proceedings of the National Academy of Sciences after performing studies of cattle and deer grazing and sleeping patterns. The animals tended to face north-south oriented toward the earth’s magnetic poles. Hynek Burda of the University of Duisburg-Essen in Germany led the team that announced the unconfirmed study. Burda and his team gathered cattle data via analysis of Google Earth images.

The team originally intended to test for possible human magnetic field detection by studying the orientation of sleeping bags in outdoor campers, but it proved difficult to obtain data because humans usually slept under tents. Cattle were easier to observe, and 8,510 head of cattle at 308 locations demonstrated a strong tendency to align body orientation in accordance with the earth’s magnetic field. Other possible factors such as wind or sunlight direction did not supply a better explanation for the behavior.

To compare against a second large species, Burda and his team analyzed data on 2,974 deer studied through photography, direct observation, and snow imprints. The deer demonstrated a similar pattern. “I think the really amazing thing is that hunters and herdsmen and farmers didn’t notice it,” said Burda according to a National Public Radio report.

Other scientists found the results of the study intriguing. Peter August of the University of Rhode Island in Kingston, commented: “I was really amazed at the consistency with which they found north-facing cows and deer. It was really intriguing.” No independent study has yet confirmed the Duisburg-Essen team’s findings.

This is the first study that indicates magnetic field detection in large mammals. Burda’s previous research involves naked mole rats, a small blind mammal species whose behavior indicates an internal magnetic compass. According to a report by Jeremy Hsu at MSNBC, “Previous research has shown that animals such as birds, turtles and salmon migrate using a sense of magnetic direction, and small mammals such as rodents and one bat species also have a magnetic compass.”

The time is 18:00 (UTC) on June 27th, 2006, and this is Audio Wikinews News Briefs.

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Tuesday, March 29, 2005A team of Australian surgeons yesterday reattached both hands and one foot to 10-year-old Perth boy, Terry Vo, after a brick wall which collapsed during a game of basketball fell on him, severing the limbs. The wall gave way while Terry performed a slam-dunk, during a game at a friend’s birthday party.

The boy was today awake and smiling, still in some pain but in good spirits and expected to make a full recovery, according to plastic surgeon, Mr Robert Love.

“What we have is parts that are very much alive so the reattached limbs are certainly pink, well perfused and are indeed moving,” Mr Love told reporters today.

“The fact that he is moving his fingers, and of course when he wakes up he will move both fingers and toes, is not a surprise,” Mr Love had said yesterday.

“The question is more the sensory return that he will get in the hand itself and the fine movements he will have in the fingers and the toes, and that will come with time, hopefully. We will assess that over the next 18 months to two years.

“I’m sure that he’ll enjoy a game of basketball in the future.”

The weight and force of the collapse, and the sharp brick edges, resulted in the three limbs being cut through about 7cm above the wrists and ankle.

Terry’s father Tan said of his only child, the injuries were terrible, “I was scared to look at him, a horrible thing.”

The hands and foot were placed in an ice-filled Esky and rushed to hospital with the boy, where three teams of medical experts were assembled, and he was given a blood transfusion after experiencing massive blood loss. Eight hours of complex micro-surgery on Saturday night were followed by a further two hours of skin grafts yesterday.

“What he will lose because it was such a large zone of traumatised skin and muscle and so on, he will lose some of the skin so he’ll certainly require lots of further surgery regardless of whether the skin survives,” said Mr Love said today.

The boy was kept unconscious under anaesthetic between the two procedures. In an interview yesterday, Mr Love explained why:

“He could have actually been woken up the next day. Because we were intending to take him back to theatre for a second look, to look at the traumatised skin flaps, to close more of his wounds and to do split skin grafting, it was felt the best thing to do would be to keep him stable and to keep him anaesthetised.”

Professor Wayne Morrison, director of the respected Bernard O’Brien Institute of Microsurgery and head of plastic and hand surgery at Melbourne’s St Vincent’s Hospital, said he believed the operation to be a world first.

Monday, November 26, 2007

In the 18 months since Andrea Muizelaar was crowned winner of the reality TV series Canada’s Next Top Model, her life has been a complete whirlwind. From working in a dollar store in her hometown of Whitby, Ontario, to modeling haute couture in Toronto, she had reached her dream of becoming a true Top Model.

But at what cost? Unknown to casual television viewers, Muizelaar had been enveloped in the eating disorder anorexia nervosa, which inevitably became too much for her to bear. She gave up modeling and moved back to Whitby, where she sought treatment for her disorder, re-entered college, and now works at a bank. Where is she now? Happy and healthy, she says.

Recently Andrea Muizelaar sat down with Wikinews reporter Mike Halterman in a candid interview that stretched to nearly two hours, as she told all about her hopes and aspirations, her battle with anorexia, and just what really happened on Canada’s Next Top Model.

Monday, June 23, 2008

2008 COMPUTEX Taipei, the largest trade fair since its inception in 1982, featured several seminars and forums, expansions on show spaces to TWTC Nangang, great transformations for theme pavilions, and WiMAX Taipei Expo, mainly promoted by Taipei Computer Association (TCA). Besides of ICT industry, “design” progressively became the critical factor for the future of the other industries. To promote innovative “Made In Taiwan” products, pavilions from “Best Choice of COMPUTEX”, “Taiwan Excellence Awards”, and newly-set “Design and Innovation (d & i) Award of COMPUTEX”, demonstrated the power of Taiwan’s designs in 2008 COMPUTEX Taipei.