ScienceDaily: Top News

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• Multi-toxin biotech crops not silver bullets, scientists warn
• Artificial spleen to treat bloodstream infections: Sepsis therapeutic device under development
• Low-power use for mobile devices: 60 GHz radio frequency chip
• Monounsaturated fats reduce metabolic syndrome risk
• Smoking immediately upon waking may increase risk of lung and oral cancer
• Female students just as successful as males in math and science, Asian-Americans outperform all
• Black bears on the rebound in Nevada
• Mechanical engineering professor invents portable mobility assistant device
• Inorganic materials display massive and instantaneous swelling and shrinkage
• Rise in CF patient infections explained: DNA sequencing reveals evidence for Mycobacterium abscessus transmission between Cystic Fibrosis patients
• Innate immune system can kill HIV when a viral gene is deactivated
• Eating more fiber may lower risk of first-time stroke
• Everything you know about osmosis is (probably) wrong
• Obesity leads to decreased physical activity over time

Multi-toxin biotech crops not silver bullets, scientists warn Posted: 30 Mar 2013 10:08 AM PDT The widely used strategy of endowing crops with redundant toxins to fend off pests rests on flawed assumptions, researchers have discovered. Their study helps explain why pests are evolving resistance much faster than predicted and offers solutions for better agricultural management.

Artificial spleen to treat bloodstream infections: Sepsis therapeutic device under development Posted: 30 Mar 2013 10:05 AM PDT Scientists are developing blood-cleansing technology. The device will be used to treat bloodstream infections that are the leading cause of death in critically ill patients and soldiers injured in combat. To rapidly cleanse the blood of pathogens, the patient's blood is mixed with magnetic nanobeads coated with a genetically engineered version of a human blood 'opsonin' protein that binds to a wide variety of bacteria, fungi, viruses, parasites, and toxins.

Low-power use for mobile devices: 60 GHz radio frequency chip Posted: 29 Mar 2013 01:12 PM PDT Scientists recently developed a low-power version of the 60 GHz radio frequency integrated circuit (RFIC). The research team said that their RFIC draws as little as 67 mW of power in the 60 GHz frequency band, consuming 31mW to send and 36mW to receive large volumes of data.

Monounsaturated fats reduce metabolic syndrome risk Posted: 29 Mar 2013 09:51 AM PDT Canola oil and high-oleic canola oils can lower abdominal fat when used in place of other selected oil blends, according to a new study. Researchers also found that consuming certain vegetable oils may be a simple way of reducing the risk of metabolic syndrome, which affects about one in three US adults and one in five Canadian adults.

Smoking immediately upon waking may increase risk of lung and oral cancer Posted: 29 Mar 2013 09:51 AM PDT The sooner a person smokes a cigarette upon waking in the morning, the more likely he or she is to acquire lung or oral cancer, according to researchers.

Female students just as successful as males in math and science, Asian-Americans outperform all Posted: 29 Mar 2013 09:50 AM PDT While compared to men, women continue to be underrepresented in math and science courses and careers. Is this disparity a true reflection of male and female student ability? According to a new study, male and female students earn similar grades in math and science while Asian-American students of both genders outperform all other races.

Black bears on the rebound in Nevada Posted: 29 Mar 2013 09:43 AM PDT A new study has pieced together the last 150 years of history for one of the Nevada's most interesting denizens: the black bear.

Mechanical engineering professor invents portable mobility assistant device Posted: 29 Mar 2013 09:43 AM PDT A new state-of-the-art device to assist the elderly and disabled with sitting, standing and walking.

Inorganic materials display massive and instantaneous swelling and shrinkage Posted: 29 Mar 2013 09:41 AM PDT The first observation of massive swelling and shrinkage of inorganic layered materials like a biological cell provides insights into the production of two-dimensional crystals.

Rise in CF patient infections explained: DNA sequencing reveals evidence for Mycobacterium abscessus transmission between Cystic Fibrosis patients Posted: 29 Mar 2013 06:03 AM PDT Whole genome sequencing has explained why infection by the multidrug resistant bacteria, Mycobacterium abscessus, has been on the increase in Cystic Fibrosis patients. This study revealed that frequent transmission of the bacteria occurs between CF patients despite conventional cross-infection measures.

Innate immune system can kill HIV when a viral gene is deactivated Posted: 29 Mar 2013 05:59 AM PDT Research suggests a new target for treatment and the eventual cure of HIV/AIDS.

Eating more fiber may lower risk of first-time stroke Posted: 28 Mar 2013 01:14 PM PDT Eating more fiber may decrease your risk of first-time stroke, according to new research.

Everything you know about osmosis is (probably) wrong Posted: 28 Mar 2013 12:25 PM PDT Even though the concept is important to plant and human physiology, osmosis is understood in biology and chemistry in simple -- and often incorrect -- way.

Obesity leads to decreased physical activity over time Posted: 28 Mar 2013 11:24 AM PDT Obesity leads to a decrease in physical activity over time, researchers have confirmed. The exercise science team used accelerometers to measure the actual movement and intensity of activity for 254 female participants, 124 of which were obese. Over the course of 20 months, physical activity dropped by eight percent for the group of obese individuals.

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