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News | Archive (13 May 2009) [Page 7]
New machine expedites research and development of surgical tools, techniques
— 00:27 GMT | HealthA new machine developed at North Carolina State University makes an animal heart pump much like a live heart after it has been removed from the animal's body, allowing researchers to expedite the development of new tools and techniques for heart surgery. The machine saves researchers time and money by allowing them to test and refine their technologies in a realistic surgical environment, without the cost and time associated with animal or clinical trials…
Scientists identify gene in breast cancer pathway
— 00:22 GMT | HealthScientists at Albert Einstein College of Medicine of Yeshiva University have discovered how a gene crucial in triggering the spread of breast cancer is turned on and off. The findings could help predict whether breast tumours will metastasise and also reveal potential drug targets for preventing metastasis. The study will appear in the 20th May online edition of the Journal of Cell Science…
Levels of hormone in men with heart failure associated with increased risk of death
— 00:17 GMT | HealthMen with systolic chronic heart failure who have low or high levels of estradiol, a form of the hormone oestrogen, have an increased risk of death compared with men with moderate levels of this hormone, according to a study in the 13 May issue of JAMA…
Particles containing lead affect the climate by promoting ice formation in clouds
— 00:12 GMT | EnvironmentLead pollution in the air stimulates the formation of ice particles in clouds. A team of scientists from the USA, Germany and Switzerland has found that particles containing lead are excellent seeds for the formation of ice crystals in clouds. This not only has a bearing on the formation of rain and other forms of precipitation but may also have an influence on the global climate. This is because the heat given off from the earth's surface is more efficiently radiated into space by ice clouds (cirrus) with lead-containing particles than has been hitherto realised…
Brown dwarfs do form like stars
New giant toothless pterosaur discovered