Daily Archives: September 11, 2013

DNA VS SMACK/URL SUMMER MADNESS 3

By: TheBattleFrenzy

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DNA VS SMACK/URL SUMMER MADNESS 3 - Video

Praise poetry essential part of African DNA
For more on this and other stories please visit http://www.enca.com/ Zolani Mkiva speaks to eNCA about African heritage and praise poetry and recited a part ...

By: eNCAnews

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Praise poetry essential part of African DNA - Video

Gopher Football 2013 TV Advertisement: DNA Breaking
http://www.MyGopherSports.com Watch this Gopher Football 2013 TV advertisement featuring Gophers defensive end Ra #39;Shede Hagement! Copyright Hunt Adkins Agenc...

By: GopherAthletics

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Gopher Football 2013 TV Advertisement: DNA Breaking - Video

DNA Amsterdam / Los Angeles - GRAND OPENING - Promo vido
Grand Opening of clothing store DNA Amsterdam / Los Angeles. With guest appearances from Rakaa Iriscience and DJ Babu of Dilated Peoples.

By: Ed Jansen

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DNA Amsterdam / Los Angeles - GRAND OPENING - Promo vido - Video

HOW TO EXTRACT YOUR DNA AT HOME (REUPLOADED)
"how to extract dna" "how to extract dna from hair" "how to extract dna from saliva" "how to extract dna strawberry" "how to extract dna banana" "how to extr...

By: Socoolscienceshow

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HOW TO EXTRACT YOUR DNA AT HOME (REUPLOADED) - Video

A team of Stanford researchers has found a way to grow graphene nanoribbons using strands of DNA. This important development could be the key to large-scale production of graphene-based transistors that are orders of magnitude smaller, faster and less power-hungry than current silicon technology.

Chip manufacturers happily invest billions of dollars every year into making their transistors just a tiny bit smaller, faster, and less power-hungry. Though they may seem insignificant individually, when taken together these small year-by-year changes are the main factors that drive the exponential growth in the performance of today's microchips.

Silicon transistors have come very a long way, but there are hard limits to how much they can shrink and how fast they can run: beyond a certain point, interferences brought on by both waste heat and leakage current make further progress nearly impossible. It should therefore come as no surprise that researchers have been looking into manufacturing transistors with alternative materials.

Graphene, a one-atom-thick layer of carbon atoms, is one of the frontrunners in this race. Because of its excellent electrical conductivity, it holds a lot of promise for producing faster and more efficient transistors that are also cheaper and significantly smaller than what we have today.

Graphene transistors can be produced using nanoribbons very narrow strips of graphene only 20 to 50 atoms wide. However, mass-producing nanoribbons of such a small size has so far proven a tough challenge.

As it turns out, DNA molecules are approximately as big as the graphene nanoribbons that researchers are trying to create, and they also carry carbon atoms, which are the only constituent of graphene. This gave Stanford researcher Zhenan Bao and colleagues the idea to use DNA to help them assemble graphene nanoribbons.

Using a known technique, the researchers first "combed" the DNA strands into relatively straight lines. They then exposed them to a solution of copper salt, which resulted in copper ions being absorbed into the DNA itself.

The DNA was then heated and surrounded in methane gas. The heat freed carbon atoms from both the DNA and the methane, and through a chemical reaction the carbon atoms quickly and orderly assembled to form graphene ribbons that followed the structure of DNA.

After succeeding in the experiment, the team took things a step further and actually used the technique to manufacture working graphene transistors.

While the assembly process still needs to be refined (the carbon atoms sometimes bunch up together instead of forming in a clean one-atom-thick sheet), this work is truly paving the way toward a highly scalable, cheap and precise way to manufacture graphene electronics.

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Stanford scientists use DNA to assemble graphene transistors

Criminals compelled to give DNA samples

Thursday, September 12, 2013

Convicted criminals and suspects detained as part of serious criminal investigations are to be compelled, by force if necessary, to provide DNA samples for a new national database.

Justice Minister Alan Shatter yesterday published a bill for the establishment of a DNA database

By Dan Buckley

The new legislation was welcomed by victim support groups, including Rape Crisis Network Ireland and CARI, the organisation that assists child victims of sexual abuse.

It was also given a guarded welcome by the Irish Council for Civil Liberties.

Making the announcement, Mr Shatter said: I am very pleased to publish this long-awaited legislation which provides for the establishment of a DNA database. I campaigned for such a database for many years in opposition and its establishment is a commitment contained in the Programme for Government.

When I became Minister for Justice, Equality and Defence in 2011, I made it a priority to bring forward comprehensive legislation to facilitate the optimal use of DNA in the fight against crime and to enhance co-operation within the EU and with other countries. In doing this, I was also determined the legislation would fully respect human rights. I am satisfied that we have met all of these objectives.

The database will be used to link crimes, identify suspects in relation to unsolved crimes, and help find or identify missing persons.

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Criminals compelled to give DNA samples

DNA evidence found inside a baseball cap led New Orleans police to arrest a man Tuesday in the March murder of a man in eastern New Orleans, according to records filed in Orleans Parish Criminal District Court. An anonymous tip also helped lead detectives to 22-year-old Armand Williams, who was arrested in the murder of Tyson Pittman, 27, the record shows.

Pittman was found shot to death on March 26 about 10:40 p.m., inside a car parked outside an apartment complex in the 8000 block of Trapier Avenue.

Police said when they arrived on the scene, Pittman's body was slumped over the wheel in the driver's seat of a gray Nissan Altima. The driver's side window was riddled with bullet holes and the rear passenger's side window was shattered.

Police searched the car and found two baseball caps, only one of which belonged to Pittman, the car's owner told detectives.

The other hat -- a "New Era" Miami Dolphins baseball cap -- was found on the passenger seat of the car.

Sometime during the investigation, detectives began questioning Williams. He told them that he had been in Pittman's car earlier that week, but that he hadn't left anything in the car.

Both hats found in the car, Pittman's cap and the Dolphins cap, were taken to the Louisiana State Police Crime Lab, where they were tested for DNA. The hat that was said to belong to Pittman had a mixture of different profiles, police said, and so did the Dolphins cap, although tests showed that Williams' DNA was a "major contributor" to the Dolphins cap.

Police again interviewed Williams and he again told police that he hadn't been inside Pittman's car the night of the murder and reiterated that he hadn't left any articles of clothing inside the car on previous occasions.

Records show that detectives also received an anonymous tip identifying Williams and, that coupled with the DNA evidence, police were able to secure an arrest warrant for him. Williams was booked on charges of second-degree murder. He is being held in lieu of a $350,000 bond.

In April of 2013, Williams was arrested on a charge of simple burglary of an inhabited dwelling and is currently awaiting trial on that charge.

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DNA found inside baseball cap ties suspect to March murder

Justice Minister Alan Shatter has insisted a new database of DNA samples from convicted criminals and suspects in serious crimes will respect human rights.

Publishing a Bill for the establishment of the DNA database, the minister said the intelligence generated by the system would be "invaluable" to gardai in tackling crime.

"I made it a priority to bring forward comprehensive legislation to facilitate the optimal use of DNA in the fight against crime and to enhance co-operation within the EU and with other countries," Mr Shatter said.

"In doing this, I was also determined that the legislation would fully respect human rights. I am satisfied that we have met all of these objectives."

The Criminal Justice (Forensic Evidence and DNA Database System) Bill 2013 allows for officials to take mouth swabs or hair follicles from suspects and convicted criminals, including sex offenders.

Their DNA profile would be added to a database which will also include samples from unsolved crimes.

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DNA data 'to respect human rights'