science + technology news

Exclusive Intel Product Roadmap Details

February 28, 2003

Intel’s entire roadmap for the next few years will be revealed on Ziff Davis’ ExtremeTech site.

Tumors Feel The Deadly Sting Of Nanobees

September 1, 2009

Washington University School of Medicine researchers have attached the peptide Melittin, a major component of bee venom, to nano-sized spheres they call “nanobees”
for injection into tumors.

Melittin is strongly attracted to cell membranes, where it can form pores that break up cells and kill them. The results suggest that nanobees could lessen the growth and size of established cancerous tumors and also act at early stages to prevent… read more

‘Artificial leaf’ harnesses sunlight for efficient, safe hydrogen fuel production

Generating and storing renewable energy, such as solar or wind power, is a key barrier to a clean-energy economy
August 28, 2015

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The first complete, efficient, safe, integrated solar-driven system for splitting water to create hydrogen fuels has been developed by the Joint Center for Artificial Photosynthesis (JCAP) at Caltech, according to Caltech’s Nate Lewis, George L. Argyros Professor and professor of chemistry, and the JCAP scientific director.

The new solar fuel generation system, or “artificial leaf,” is described in the August 27 online issue of the… read more

Put young children on DNA list, urge police

March 17, 2008

Primary school children should be eligible for the DNA database if they exhibit behavior indicating they may become criminals in later life, according to Britain’s most senior police forensics expert.

Vitamin D May Lower Some Cancer Risk

December 29, 2005

There is growing evidence that vitamin D helps protect against colorectal cancer, and now a group of researchers who have long studied the vitamin say the same is true for breast cancer and ovarian cancer.

The researchers recommend 1,000 international units (IU) of vitamin D daily. Current recommendations call for people between the ages of 1 and 50 to consume 200 IU of vitamin D daily, with 400 IU… read more

Face-Recognition Technology Improves

March 14, 2003

Facial recognition technology has improved substantially since 2000, according to a federal government report. The best facial recognition systems can now correctly verify that a person in a photograph or video image is the same person whose picture is stored in a database 90 percent of the time, with one percent false positives. Performance has also been enhanced by improving technology to rotate images taken at an angle.

Secrets of the centenarians: Life begins at 100

September 8, 2009

Researchers who study the oldest people have made a surprising discovery that presents a less bleak vision of the future than many anticipate: people who break through the 90-plus barrier represent a physical elite, markedly different from the elderly who typically die younger than them.

Far from gaining a longer burden of disability, their extra years are often healthy ones.

First 3-D view of anti-cancer agent

March 20, 2008

Indiana University and Purdue University researchers used X-ray crystallography to create the first 3D image showing how the chemotherapy agent bleomycin targets and binds to DNA.

The research may allow for developing a less toxic version. Bleomycin is used in a standard treatment for testicular cancer, but it causes lung damage, so currently it isn’t used against many other cancers.

Indiana University News Release

Robonauts

January 10, 2006

The new robot designs for space exploration are part of a broader shift toward a vision of robots that are partners, not simply remote-controlled probes.

At the Computer Science and Artificial Intelligence Laboratory at MIT, robots are developing the skills they’ll need to be useful to people. The Mertz robot recognizes faces and distinguishes one person from another. Obrero, a mechanical arm, has a touch so sensitive it can… read more

How Antispam Software Works

March 31, 2003

Smarter filtering techniques — from rules-based analysis to artificial intelligence — promises to eradicate junk mail.

Bayesian filtering, the most promising new technique, learns and relearns how to spot spam by scanning the mail you’ve read and the mail you’ve rejected. It filters out more than 99 percent of unwanted messages.

The Top 25 subject-line words and symbols: Fwd, Free, Get, FREE, $, !, SPAM, You, Your, Norton,… read more

Google Releases News-Reading Service

September 15, 2009

Google introduced Monday an experimental news hub called Fast Flip that allows users to view news articles from about three dozen major publishers and flip through them as quickly as they would the pages of a magazine.

The mobile version of Google Fast Flip is available for the iPhone and Android devices by simply navigating to the Google Fast Flip homepage on your phone.

Pushing the resolution and exposure-time limits of lensless imaging

A custom-built ultrafast laser that could image everything from semiconductor chips to cells in real time
September 25, 2015

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Physicists at Friedrich Schiller University in Germany are pushing the boundaries of nanoscale imaging by shooting ultra-high-resolution, real-time images in extreme ultraviolet light — without lenses. The new method could be used to study everything from semiconductor chips to cancer cells, the scientists say.

They are improving a lensless imaging technique called “coherent diffraction imaging,” which has been around since the 1980s. To take a picture… read more

Anticancer siRNA therapy advances, thanks to nanoparticles

March 28, 2008

California Institute of Technology, University of North Carolina at Chapel Hill and Ghent University researchers are making progress in developing broadly applicable, nanoparticle-enabled siRNA anticancer therapeutics.

They found that siRNA-containing nanoparticles deliver the siRNA to tumors more effectively when the nanoparticle are targeted to the tumor. They also found that the targeted nanoparticles effectively penetrated lung metastases, did not enter liver cells, and showed little immunotoxicity.

Small pieces… read more

New theory explains electronic and thermal behavior of nanotubes

January 20, 2006

Researchers at the University of Illinois at Urbana-Champaign have made an important theoretical breakthrough in the understanding of energy dissipation and thermal breakdown in metallic carbon nanotubes. Their discovery will help move nanotube wires from laboratory to marketplace.

Shorter nanotubes can carry more current before burning apart because they dissipate heat better than longer nanotubes. The electrical contacts at each end act as heat sinks, which in short nanotubes… read more

How to detect where pluripotent stem cells want to go

July 11, 2011

Researchers at the McMaster Stem Cell and Cancer Research Institute have discovered how human pluripotent stem cells (those capable of differentiating into many cell types) make decisions about what cell type to become: the destination is actually encoded by how their DNA is arranged, and this can be detected by specific proteins on the surface of the stem cells.

When they isolated stem cells with… read more

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