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A fluorescent test for antioxidant drugs

November 25, 2011

Zebrafish

A study by UC San Diego School of Medicine, with colleagues in Australia, to visualize accumulation of oxidized LDL in genetically modified zebrafish could lead to a rapid test for the potential effectiveness of new antioxidant and dietary therapies for human atherosclerosis.

Atherosclerosis is a process of lipid deposition and inflammation in the artery walls. Low-density lipoprotein (LDL) that carries “bad” cholesterol in blood is easily oxidized, and… read more

Topics: Biomed/Longevity | Biotech

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Printable Robots

June 22, 2006
Detail of robot butterfly printed circuitry (concept)

Inkjet printing could provide the basis for the printing complete artificial organs or fabricate polymeric drug delivery systems, batteries, displays and semiconductor devices.

Topics: AI/Robotics | Electronics

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Interview: Why our brains are so clumsy

June 2, 2008

In his new book, Kluge: The haphazard construction of the human mind, Gary Marcus describes the brain as a clumsy collection of spare parts.

Evolution tends not to optimise things; it simply tinkers with what’s already there, he says. So it tends to make things better but there’s no guarantee that it will make the best.

“Survival of the fittest” really means
fittest of the available options. Evolution… read more

Topics: Biotech

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For Those Needing 32 More Bits

August 18, 2003

The arrival of 64-bit desktop processors signifies a new era of computing — initially for professionals who are bumping up against the memory limits of existing PC’s. Soon afterward the new chips will affect everyday computer users, for whom a new generation of media machines should offer remarkable improvements in audio and visual effects.

Topics: Computers/Infotech/UI

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Longevity Genes May Protect against Alzheimer’s

January 13, 2010

A genetic variation known as CETP previously linked to longevity may also protect against the development of Alzheimer’s disease and other types of dementia, according to findings by the Einstein Aging Study, an ongoing examination of a diverse group of people age 70 and older living in the Bronx.

The new research found that those with two copies of the protective variant had a 70 percent lower chance of… read more

Topics: Biomed/Longevity

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Massive black holes discovered

December 6, 2011

Astronomers have discovered the two most massive black holes known in the Universe, Nature News Blog reports. With masses on the order of 10 billion times that of the Sun, these gravitational monsters could represent a missing link: the first known remnants of the brightest quasars that lit the cosmos only a billion or so years after the Big Bang.

Ref.: Nicholas J. McConnell et al., Two… read more

Topics: Physics/Cosmology

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‘Virgin birth’ stem cells bypass ethical objections

July 4, 2006

“Virgin-birth” embryos have given rise to human embryonic stem cells capable of differentiating into neurons.

The embryos were produced by parthenogenesis, a form of asexual reproduction in which eggs can develop into embryos without being fertilised by sperm. The technique could lead to a source of embryonic stem cells that could be used therapeutically without having to destroy a viable embryo.

Topics: Biotech

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Pretty on the Inside

June 6, 2008
Cells prepare for division by condensing their DNA into chromosomes (Lothar Schermelleh, Peter Carlton)

University of California, San Francisco and Ludwig Maximilians University researchers are using a new technique called 3-D structured-illumination microscopy to view living cells with 100 nanometers resolution.

The new microscope illuminates cells with interference patterns. When a fine cellular structure reflects this light, it changes the pattern slightly. The microscope collects it, then software interprets the changes and creates an image.

The inner workings of living… read more

Topics: Biotech

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This Worm Can Be Turned

August 25, 2003

The Blaster worm and SoBig virus give the computer community the largest threat so far. Some fear a terrorist attack would have added ammunition if it were coupled with a vicious computer attack.

Topics: Survival/Defense

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Interactive paper creates the greetings card 2.0

January 20, 2010

Electrical circuits made by conductive printed ink and miniaturized electronic devices are helping to create a new generation of “intelligent” greeting cards and books and other interactive paper-based products.

The conductive ink can also create touch-sensitive components and also link to other devices embedded in the paper, such as microphones and LEDs.

Topics: Computers/Infotech/UI | Electronics

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Quantum PageRank algorithm outperforms classical version

December 14, 2011

Quantum page rank

A quantum-network version of Google’s PageRank search algorithm could one day make web searches faster, Technology Review Physics arXiv Blog reports.

Ref.: G.D. Paparo, M.A. Martin-Delgado, Google in a Quantum Network, arxiv.org/abs/1112.2079

Topics: Physics/Cosmology | Quantum

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Freescale goes to market with magnetic memory

July 13, 2006

Freescale Semiconductor has released its MR2A16A chip, which the company says is the first commercial MRAM, or magnetoresistive random access memory, device.

Freescale’s chip promises to read or write data in 35 nanoseconds. In addition, MRAM can hold data even after the computer is turned off. Proponents say it could replace both flash memory, used inside cell phones and cameras, and DRAM, employed inside computers to shuttle data to… read more

Topics: Electronics

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The Flight of Dragonfly Robots

June 11, 2008

Studies of wing motion and air forces that reveal how dragonflies achieve their agility may enable roboticists to eventually build capable, swift biomimetic micro air vehicles that use four wings.

Topics: AI/Robotics

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Doomsday postponed

September 5, 2003

Astronomers have issued the “all-clear” on asteroid 2003 QQ47, suspected by some to be on a possible collision course with the Earth in just 11 years.

Topics: Survival/Defense

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Spasers set to sum: A new dawn for optical computing

January 26, 2010

The “spaser,” the latest by-product of a buzzing field known as nanoplasmonics, based on plasmons, may lead to building a super-fast computer that computes with light.

Plasmons, which are ultra-high-frerquency electron waves on a metallic surface, overcome the speed limits of the wires that interconnect transistors in chips, allowing for converting electronic signals into photonic ones and back again with speed and efficiency.

Topics: Computers/Infotech/UI | Physics/Cosmology

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