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FDA orders 23andMe to halt sales of its its Saliva Collection Kit and Personal Genome Service

November 26, 2013

(Credit: 23 And Me

The FDA has told 23andMe, Inc., the Google-backed DNA analysis company cofounded by Anne Wojcicki, to halt sales of its Saliva Collection Kit and Personal Genome Service (PGS).

In a letter, the FDA said the company was acting “without marketing clearance or approval in violation of the Federal Food, Drug and Cosmetic Act (the FD&C Act)….”

“Most of the intended uses for PGS listed on your… read more

Topics: Biotech | Social/Ethical/Legal

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Steering toxic drug-filled nanoparticles to zap cancer, not healthy cells

November 26, 2013

Multifunctionalized drug-loaded nanoparticle

North­eastern researchers are developing sim­u­la­tion soft­ware called Mag­nasim to more accu­rately steer simulated drug-filled mag­netic nanopar­ti­cles to tumor masses where they can safely dis­charge their con­tents.

The drugs used to kill cancer cells are just as toxic to neigh­boring healthy cells, so researchers have long sought a drug delivery method that tar­gets only cancer cells, bypassing the healthy ones.

Func­tional Mag­netic Res­o­nance Imaging (fMRI) is being… read more

Topics: Biomed/Longevity | Electronics

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Black hole birth captured by ‘armada of instruments’

"A Rosetta-Stone event ... may require physicists to modify existing theories about radiation"
November 25, 2013

star_becomes_black_hole

“Los Alamos’ RAPTOR telescopes in New Mexico and Hawaii received a very bright cosmic birth announcement for a black hole on April 27,” said astrophysicist Tom Vestrand, lead author of a paper n the journal Science Nov. 21 that highlights the unusual event.

“This was the burst of the century,” said Los Alamos co-author James Wren. “It’s the biggest, brightest one to happen in at least 20 years, and… read more

Topics: Physics/Cosmology

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Ultrasound-released nanoparticles may help diabetics avoid the needle

November 25, 2013

New technique allows diabetics to control insulin release with an injectable nano-network and portable ultrasound device.

A new nanotechnology-based technique for regulating blood sugar in diabetics could give patients the ability to release insulin painlessly using a small ultrasound device, allowing them to go days between injections — rather than using needles to give themselves multiple insulin injections each day.

A patient who has type 1 or advanced type 2 diabetes needs additional insulin, a hormone that transports glucose — or blood sugar — from… read more

Topics: Biomed/Longevity | Nanotech/Materials Science

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Will 2D tin be the next super material for chip interconnects?

New single-layer material could go beyond graphene, conducting electricity with 100 percent efficiency at room temperature
November 25, 2013

Adding fluorine atoms (yellow) to a single layer of tin atoms (grey) should allow a predicted new material, stanene, to conduct electricity perfectly along its edges (blue and red arrows) at temperatures up to 100 degrees Celsius (212 Fahrenheit). (Yong Xu/Tsinghua University; Greg Stewart/SLAC)

Move over, graphene. “Stanene” —  a single layer of tin atoms — could be the world’s first material to conduct electricity with 100 percent efficiency at the temperatures that computer chips operate, according to a team of theoretical physicists led by researchers from the U.S. Department of Energy’s (DOE) SLAC National Accelerator Laboratory and Stanford University.

Stanene — the Latin name for tin (stannum) combined with the… read more

Topics: Computers/Infotech/UI | Electronics | Nanotech/Materials Science

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FDA allows marketing of ‘next generation’ gene-sequencing devices

A boost for personalized medicine and pharmocogenomics
November 25, 2013

MiSeq Benchtop Sequencer (credit: Illumina)

The FDA has approved marketing of four diagnostic devices from Illumina (a manufacturer of DNA sequencing machines) for “next generation sequencing” (NGS) — meaning the devices can now quickly and cheaply read and interpret large segments of the genome (the set of genetic information in your body) in a single test.

Two of the devices allow laboratories to sequence a patient’s genome for any purpose, according… read more

Topics: Biomed/Longevity | Biotech | Computers/Infotech/UI

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More-realistic 3D imaging technique speeds up production of movie images, modeling human organs

November 22, 2013

Isotropy vs. anisotropy

UT Dallas computer scientists have developed a technique to make 3D images faster and with more accuracy.

The method uses anisotropic (irregular) triangles — triangles with sides that vary in length depending on their direction — to create 3D “mesh” computer graphics that more accurately approximate the shapes of the original objects, and in a shorter amount of time than current techniques.

These types of images… read more

Topics: Entertainment/New Media | VR/Augmented Reality/Computer Graphics

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Faster, cheaper biofuel production

November 22, 2013

Thalassiosira_pseudonana

Researchers at Scripps Institution of Oceanography at UC San Diego have developed a method for greatly enhancing biofuel production in tiny marine algae by genetically engineering a key growth component in biofuel.

The researchers say a significant roadblock in algal biofuel research surrounds the production of lipid oils, the fat molecules that store energy that can be produced for fuel: algae mainly produce the desired… read more

Topics: Biotech | Energy

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Kano: a computer anyone can make

November 22, 2013

ll_ages_over_the_world_kano

Kano is a computer you make yourself. Simple as Lego, powered by Pi.… read more

Topics: Computers/Infotech/UI

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3D-printing multi-material objects in minutes instead of hours

November 22, 2013

A computer model of a pair of tweezers shows the distribution of materials and degrees of hardness in the object to be 3-D printed in Dr. Yong Chen's lab at USC Viterbi.</p> <p>Credit: USC Viterbi

In another leap for 3D printing, researchers at the USC Viterbi School of Engineering have developed a faster 3D printing process that allows for 3D-printing multi-material objects in minutes instead of hours.

Fabrication time and the complexity of multi-material objects have been a hurdle to widespread use of 3D printing.

Speeding up printing

USC Viterbi researchers developed improved mask-image-projection-based stereolithography (MIP-SL) to drastically… read more

Topics: Nanotech/Materials Science

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Carnegie Mellon computer searches web 24/7 to analyze images and teach itself common sense

NEIL program labels images, learns associations with minimal help from people
November 22, 2013

eye part of baby

A computer program called the Never Ending Image Learner (NEIL) is now running 24 hours a day at Carnegie Mellon University, searching the Web for images, doing its best to understand them. And as it builds a growing visual database, it is gathering common sense on a massive scale.

NEIL leverages recent advances in computer vision that enable computer programs to identify and label objects in images,… read more

Topics: AI/Robotics

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World’s smallest FM radio transmitter

Could lead to ultrathin, more-power-efficient cell phones
November 21, 2013

smallest_fm_transmitter

In another major new application of graphene, Columbia Engineering researchers have taken advantage of graphene’s special properties — its mechanical strength and electrical conductivity — to develop a nanomechanical system that can create FM signals — in effect, the world’s smallest FM radio transmitter.

“This is an important first step in advancing wireless signal processing and designing ultrathin, efficient cell phones, Mechanical Engineering Professor James… read more

Topics: Electronics | Internet/Cloud/Telecom | Nanotech/Materials Science

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Using a CT scan and 3D printer to recreate a fossil

November 21, 2013

3d_print_of_fossil

Data from computed tomography (CT) scans can be used with 3D printers to make accurate copies of fossilized bones, according to new research published online in the journal Radiology.

Fossils are often stored in plaster casts, or jackets, to protect them from damage. Getting information about a fossil typically requires the removal of the plaster and all the sediment surrounding it, which can lead to loss of material or… read more

Topics: Biotech | Nanotech/Materials Science

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Chaotic physics in ferroelectric materials may allow for brain-like computing

November 21, 2013

Unexpected behavior in ferroelectric materials explored by researchers at Oak Ridge National Laboratory supports a new approach to information storage and processing known as memcomputing.<br /> Credit: ORNL

Unexpected behavior in ferroelectric materials explored by researchers at the Department of Energy’s Oak Ridge National Laboratory supports a new approach to information storage and processing called “memcomputing,” or memristor-based computing.

Ferroelectric materials are known for their ability to spontaneously switch polarization when an electric field is applied.

So using a scanning probe microscope, the ORNL-led team took advantage of… read more

Topics: Cognitive Science/Neuroscience | Computers/Infotech/UI | Electronics

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Detecting and zapping Alzheimer’s and Parkinson’s with lasers

November 20, 2013

chalmers_laser_brain

It is possible to distinguish aggregations of the proteins believed to cause Alzheimer’s, Parkinson’s, and Creutzfeldt-Jakob (“mad cow”) diseases from normal proteins by using a multiphoton laser technique, researchers at Chalmers University of Technology in Sweden the Polish Wroclaw University of Technology have discovered.

Today, amyloid protein aggregates are treated with highly toxic chemicals for detection and removal.

With a multiphoton laser, the chemical treatment would be unnecessary,… read more

Topics: Cognitive Science/Neuroscience

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