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7,976 articles mezi dny 1.5.2012 a 31.5.2012

• TUESDAY 1. MAY, 2012
• 06:00 Risk of CT-induced cancer minimal compared to risk of dying from disease

  Read the story at EurekAlert
  Young patients who undergo chest or abdominopelvic CT are more than 35 times more likely to die of their disease than develop a radiation-induced cancer, according to an analysis of 23,359 patients, some of whom were scanned more than 15 times.  

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• 06:00 Risks of mixing drugs and herbal supplements: What doctors and patients need to know

  Read the story at EurekAlert
  Herbal, dietary, and energy or nutritional supplements may offer specific health benefits, but they can also have harmful and even life-threatening effects when combined with commonly used medications.  

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• 06:00 Scientists make stunning inner space observations

  Read the story at EurekAlert
  High-powered microscopes reveal workings of the cell -- results could impact treatment of Down syndrome, lissencephaly (a brain formation disorder) or cancer.  

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• 06:00 Secondhand smoke continues to vex children with asthma

  Read the story at EurekAlert
  Despite longstanding recommendations for children with asthma to avoid tobacco smoke, many youths are still exposed to secondhand smoke and their health suffers because of it, according to a study to be presented Tuesday, May 1, at the Pediatric Academic Societies annual meeting in Boston.  

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• 06:00 Smart gas sensors for better chemical detection

  Read the story at EurekAlert
  Portable gas sensors can allow you to search for explosives, diagnose medical conditions through a patient's breath, and decide whether it's safe to stay in a mine.  

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• 06:00 Sports and energy drinks responsible for irreversible damage to teeth

  Read the story at EurekAlert
  A recent study published in the May/June 2012 issue of General Dentistry, the peer-reviewed clinical journal of the Academy of General Dentistry, found that an alarming increase in the consumption of sports and energy drinks, especially among adolescents, is causing irreversible damage to teeth -- specifically, the high acidity levels in the drinks erode tooth enamel, the glossy outer layer of the tooth.  

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• 06:00 Spot a bot to stop a botnet

  Read the story at EurekAlert
  Computer scientists in India have developed a two-pronged algorithm that can detect the presence of a botnet on a computer network and block its malicious activities before it causes too much harm. The team describes details of the system in a forthcoming issue of the International Journal of Wireless and Mobile Computing.  

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• 06:00 Squid and zebrafish cells inspire camouflaging smart materials

  Read the story at EurekAlert
  Researchers from the University of Bristol have created artificial muscles that can be transformed at the flick of a switch to mimic the remarkable camouflaging abilities of organisms such as squid and zebrafish.  

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• 06:00 Study finds that patient education videos viewed before an operation may benefit patients

  Read the story at EurekAlert
  A Journal of American College of Surgeons study reports that a patient education video benefits patients when viewed before their operation. Surgeons find that some patients report less preoperative anxiety, less postoperative pain, and higher rates of overall satisfaction  

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• 06:00 Study questions the relevance of benchmarks among CABG patients receiving insulin infusions

  Read the story at EurekAlert
  Cardiothoracic surgeons and endocrinologists from Boston Medical Center have found that among patients undergoing coronary artery bypass graft surgery, achieving Surgical Care Improvement Project benchmarks for glycemic control may be irrelevant when perioperative continuous insulin infusion protocols are implemented. These findings will be presented at the annual meeting of the American Association for Thoracic Surgery on May 1 in San Francisco, CA.  

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• 06:00 Study resolves controversy on life-extending red wine ingredient, restores hope for anti-aging pill

  Read the story at EurekAlert
  A study in the May issue of the Cell Press journal Cell Metabolism appears to offer vindication for an approach to anti-aging drugs that has been at the center of heated scientific debate in recent years. The new findings show for the first time that the metabolic benefits of the red wine ingredient known as resveratrol evaporate in mice that lack the famed longevity gene SIRT1.  

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• 06:00 Study using stem cell therapy shows promise in fight against HIV

  Read the story at EurekAlert
  UC Davis Health System researchers are a step closer to launching human clinical trials involving the use of an innovative stem cell therapy to fight the virus that causes AIDS.  

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• 06:00 Stun guns not safe for citizens, but benefit police, study finds

  Read the story at EurekAlert
  The use of stun guns by police significantly increases the chances of citizen injury, yet also protects the officers more than other restraint methods, according to the most comprehensive research to date into the safety of stun guns in a law enforcement setting.  

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• 06:00 Thwarting the cleverest attackers

  Read the story at EurekAlert
  Savvy hackers can steal a computer's secrets by timing its data storage transactions or measuring its power use. New research shows how to stop them.  

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• 06:00 Treating childhood obesity: A family affair

  Read the story at EurekAlert
  With nearly one-third of American children being overweight or obese, doctors agree that there is an acute need for more effective treatments. In many weight management programs, the dropout rate can be as high as 73 percent, and even in successful programs, the benefits are usually short term.  

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• 06:00 Use of dedicated pediatric imaging departments for pediatric CT reduces radiation dose

  Read the story at EurekAlert
  The use of a dedicated pediatric imaging department (with dedicated pediatric computed tomography (CT) technologists) for pediatric CT scans significantly reduces the radiation dose delivered to the patient, according to a study in the May issue of the Journal of the American College of Radiology.  

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• 06:00 Use of fish oil supplements shows mixed results regarding graft patency for hemodialysis

  Read the story at EurekAlert
  Among patients with new synthetic arteriovenous grafts (a synthetic tube grafted between an artery and vein) for vascular access for hemodialysis, daily ingestion of fish oil did not decrease the proportion of grafts with loss of patency (remaining open) within 12 months, according to a study in the May 2 issue of JAMA.  

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• 06:00 Vanderbilt study finds hand surgeons scarce for emergency surgery

  Read the story at EurekAlert
  Wrist, hand and finger trauma are the most common injuries presented to emergency departments nationwide, yet only 7 percent of Tennessee hospitals have a hand specialist on call 24/7 to treat these patients, according to a Vanderbilt study published online today in the Annals of Plastic Surgery.  

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• 06:00 Virginia Tech announces 2012 football helmet ratings; 2 more added to the 5-star mark

  Read the story at EurekAlert
  Virginia Tech released today the results of its 2012 rating for adult football helmets that is designed to assess a helmet's ability to reduce the risk of concussion. A total of three helmets achieved a "5-star" mark, which is the highest rating awarded by the Virginia Tech Helmet Ratings.  

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• 06:00 Weight loss led to reduction in inflammation

  Read the story at EurekAlert
  Study indicates relationship between weight loss and cancer risk. Patients had a manageable goal of 10 percent weight loss. Participants were overweight or obese, postmenopausal women.  

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• 06:00 Were dinosaurs undergoing long-term decline before mass extinction?

  Read the story at EurekAlert
  Despite years of intensive research about the extinction of non-avian dinosaurs about 65.5 million years ago, a fundamental question remains: Were dinosaurs already undergoing a long-term decline before an asteroid hit at the end of the Cretaceous? A study led by scientists at the American Museum of Natural History suggests that in general, large-bodied, "bulk-feeding" herbivores were declining during the last 12 million years of the Cretaceous. But carnivorous dinosaurs and mid-sized herbivores were not.  

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• 06:00 Where touch meets hearing

  Read the story at EurekAlert
  Vision and hearing are so crucial to our daily lives that any impairments usually become obvious to an affected person. Although a number of known genetic mutations can lead to hereditary defects in these senses, little is known about our sense of touch, where defects might be so subtle that they go unnoticed.  

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• 06:00 With climate and vegetation data, UCSB geographers closer to predicting droughts in Africa

  Read the story at EurekAlert
  What might happen if droughts were predicted months ahead of time? Food aid and other humanitarian efforts could be put together sooner and executed better, say UC Santa Barbara geographers Chris Funk, Greg Husak, and Joel Michaelsen.  

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• 04:55 Glowing Pygmy Shark Lights Up to Fade Away

  Read the story at National Geographic News

  In what may sound like soggy logic, the smalleye pygmy shark hides in the dark by lighting up, a new study says.

   

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• 04:39 Gene involved in sperm-to-egg binding is key to fertility in mammals

  Read the story at ScienceDaily
  Scientists looking at fertility in mice, have discovered for the first time that the gene, which makes a protein called PDILT, enables sperm to bind to an egg, a process essential to fertilization.  

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