824,900 articles

Accepted Notion Of Neutron's Electrical Properties Overturned By New Research

For two generations of physicists, it has been a standard belief that the neutron, an electrically neutral elementary particle and a primary component of an atom, actually carries a positive charge at its center and an offsetting negative charge at its outer edge. But new research finds the neutron actually carries a negative charge at its center and outer edge, with a positive charge in between.

Leading-edge Body Sensor Could Help Produce Sporting Champions

A revolutionary unobtrusive sensor that collects and immediately transmits data from the human body could boost an athlete's sporting success in future. Cufflink-sized and clipped behind the wearer's ear, the sensor is unique in two key respects. First, it does not hinder performance, yet can gather unprecedentedly wide-ranging and useful data about posture, stride length, step frequency,...

Tracking Down Builders Of Homemade Bombs

Researchers have developed of a portable device to help track down builders of improvised explosive devices (IEDs) -- those homemade fertilizer bombs that have wreaked such havoc in terrorist attacks around the world. The researchers point out that IEDs have become a mainstay weapon for terrorists, resulting in an urgent need for new technology to identify and eliminate the sources of the...

Women More Depressed And Men More Impulsive With Reduced Serotonin Functioning

Women and men appear to respond differently to the same biochemical manipulation. Major depressive disorder is one of the most common mental disorders, and it is also one of the most studied. A new study shows important sex and genetic differences in the way that men and women react to reductions in serotonin function, specifically in terms of their mood and impulsivity.

Powerset Promises Search Breakthrough

"What did politicians say about Iraq?" Ask that question of Google and the top result is something less than authoritative. It's an entry on a blog called Doug's Darkworld. And the text is more about Kurdish politicians than American ones. This example actually indicates a key search problem. How's a search engine to know what kind of politicians the user is thinking about? Execs at Powerset, a...

IBM Presents Free Symphony to Office Workers

IBM has just unleashed a new enterprise-grade suite of office productivity applications. Called Lotus Symphony, the free software release includes separate word processor, spreadsheet, and business presentation applications that are squarely targeted at the capabilities of Microsoft Office. As part of IBM's strategy for promoting the Open Document Format (ODF), Symphony builds upon Big Blue's...

Here Come AMD's Triple-Core Phenoms

Move over, quad-core and dual-core chips. Advanced Micro Devices (AMD) announced late Monday that it would release a triple-core Phenom processor for desktop computers by early 2008. One week after releasing its quad-core Opteron chip for servers, the Sunnyvale, California chipmaker said that the x86 Phenoms are "expected to be the world's first PC processors to integrate three computational cores...

Google Docs Adds Presentation App

Google Docs, a Web-based platform for creating, sharing, storing, and publishing documents, has offered capabilities for word processing and creating spreadsheets, but has been missing a major piece of the Microsoft Office puzzle -- until now. On Monday, Google added business presentation software, the element that many analysts said was preventing the Web-based office suite from contending with...

Fragile X Syndrome: Fundamental Brain Defect And Probable Drug Target Identified

Scientists have discovered how the gene mutation responsible for fragile X syndrome -- the most common inherited form of mental retardation -- alters the way brain cells communicate. In neurons cultured from laboratory rats, the scientists also were able to reverse the effects of the mutation using a drug targeted to the specific site in an upstream pathway of the defect. The finding could lead to...

Life On Mars 'Pregnancy Test' Successfully Launched

Key components of a new approach to discover life on Mars were successfully launched into space Friday as part of a 12-day, low-Earth orbit experiment to assess their survivability in the space radiation environment -- a prelude future journeys to Mars. The new approach is based on technology similar to that used in pregnancy test kits.

Quitting Smoking: Genetic Research Shows Promise For Personalized Treatment

New genotyping research from the Center for Addiction and Mental Health found that the enzyme known to metabolize both the smoking cessation drug bupropion and nicotine is highly genetically variable in all ethnicities and influences smoking cessation. This finding is a step toward being able to tailor smoking cessation treatment to individuals based on their unique genetic make-up.

Secrets Of Protein Folding Coming Unlocked

Scientists are unraveling the mystery of how proteins fold into unique, three-dimensional shapes. Proteins are the workhorses of the body, taking on a wide variety of tasks. They fight infections, turn food into energy, copy DNA and catalyze chemical reactions. Insulin is a protein, as are antibodies and many hormones. A protein is a string of amino acids, and what it does is determined by the...