Category Archives: DNA

Eddie Simon (Provided by the Denver District Attorney's Office)

A man was found guilty of a 2001 sexual assault in Denver this week based on DNA evidence and Katie's Law.

Eddie Simon, 46, was convicted by a Denver jury on two counts of sexual assault, according to a Denver district attorney's office media release.

Simon was convicted of sexually assaulting a 20-year-old woman at knifepoint Feb. 24, 2001, in a remote area of the old Lowry Air Force Base site.

In 2013, Simon was arrested on a felony drug charge.

His DNA was taken at that time, pursuant to Katie's Law, and he was linked to the 2001 sex-assault case.

Simon will be sentenced June 16 and faces a possible "intermediate-to-life" term, the DA's office said.

Kieran Nicholson: 303-954-1822, knicholson@denverpost.com or twitter.com/kierannicholson

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Man convicted on DNA evidence in a Denver 2001 sex assault

Dr.Abbas 10 [DNA : Free nucleotides,1ry 2ry structure of DNA]
DNA : - Guanine , Sytosine Uracil free nucleotides - Primary secondary structure of DNA.

By: Forsan El Kasr

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Dr.Abbas 10 [DNA : Free nucleotides,1ry & 2ry structure of DNA] - Video

9) Dr.Rasheed 03/04/2013 [DNA : DNA structures]
DNA : - DNA structures.

By: Forsan El Kasr

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9) Dr.Rasheed 03/04/2013 [DNA : DNA structures] - Video

Dr.Abbas 14 [DNA : Replication in eukaryotes, Telomere Telomerase]
DNA : - Replication in eukaryotes - Telomere Telomerase.

By: Forsan El Kasr

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Dr.Abbas 14 [DNA : Replication in eukaryotes, Telomere & Telomerase] - Video

The Enigma of an American Icon - DNA of The Ford Mustang
Mustang design team member Jerome Malinowski gives a lecture on the history of the original Mustang at the University of Louisiana Lafayette. http://www.loui...

By: MyRide on Autobytel

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The Enigma of an American Icon - DNA of The Ford Mustang - Video

10) Dr.Rasheed 06/04/2013 [DNA : Types of RNA]
Types of RNA.

By: Forsan El Kasr

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10) Dr.Rasheed 06/04/2013 [DNA : Types of RNA] - Video

11) Dr.Rasheed 08/04/2014 [DNA : Packing of DNA]
DNA : - Packing of DNA.

By: Forsan El Kasr

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11) Dr.Rasheed 08/04/2014 [DNA : Packing of DNA] - Video

gorjul, tinta dna

By: tvsudro

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gorjul, tinta dna - Video

Dr.Abbas 15 [DNA Repair - Transcription]
DNA Repair - Transcription.

By: Forsan El Kasr

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Dr.Abbas 15 [DNA Repair - Transcription] - Video

Image Caption: A DNA strand damaged by toxic nanoparticles. Credit: Illustration by Christine Daniloff/MIT

redOrbit Staff & Wire Reports Your Universe Online

Some nanoparticles commonly added to thousands of consumer products can significantly damage DNA, according to a new study by researchers at MIT and the Harvard School of Public Health (HSPH).

These products, which include cosmetics, sunscreens, clothing and other common items, contain nanoparticles added by manufacturers to, among other things, improve texture, kill microbes, or enhance shelf life.

But the current study suggests these tiny particles can be toxic to cells.

For instance, the researchers found that zinc oxide nanoparticles, often used in sunscreen to block ultraviolet rays, significantly damages DNA. Nanoscale silver, which has been added to toys, toothpaste, clothing, and other products for its antimicrobial properties, also produces extensive DNA damage.

The US Food and Drug Administration (FDA) does not require manufacturers to test nanoscale additives for a given material if the bulk material has already been shown to be safe. However, there is evidence that the nanoparticle form of some of these materials may not be safe due to their extremely small size and differences in physical, chemical, and biological properties. They can also penetrate cells more easily.

The problem is that if a nanoparticle is made out of something thats deemed a safe material, its typically considered safe. There are people out there who are concerned, but its a tough battle because once these things go into production, its very hard to undo, said Bevin Engelward, professor of biological engineering at MIT and lead researcher of the current study.

Engleward and associate professor Philip Demokritou, director of HSPHs Center for Nanotechnology and Nanotoxicology, used a high-speed screening technology to analyze the DNA damage caused by nanoparticles, allowing them to study the potential hazards at a much faster rate and larger scale than previously possible.

The researchers focused on five types of engineered nanoparticles silver, zinc oxide, iron oxide, cerium oxide, and silicon dioxide (also known as amorphous silica) that are used industrially. Some of these nanomaterials can produce free radicals called reactive oxygen species, which can alter DNA. Furthermore, once these particles get into the body, they may accumulate in tissues, causing even more damage.

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Many Common Household Products Contain DNA-Damaging Nanoparticles: Study