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Posted by admin in Biology, Life, Science in Society, Technology on 19. Feb, 2010 | No Comments
In the latest Quest
Our changing oceans The world’s oceans are undergoing significant changes – seen in indicators such as temperature and salinity. Isabelle Ansorge and Mike Roberts explain how South Africa is involved in investigations of these changes. The meridional overturning circulation (MOC) is a system of surface and deep
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Posted by admin in Biology, Featured, Life, Science in Society, Technology on 19. Feb, 2010 | No Comments
In the latest Quest
Robots in the ocean Why do we need a global ocean observing system? by Thomas Mtsonti and Isabelle Ansorge In the past three decades, discussions of global warming have been restricted mainly to academic debates. Now, however, the same topics provide fuel for public debate and mounting pressure for increasing
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Posted by admin in Biology, Featured, Life, Science in Society on 19. Feb, 2010 | No Comments
In the latest Quest
High in the food chain – seals in the Southern Ocean The Marion Island seal populations have been studied for the last 30 years. Cheryl Tosh and Marthán Bester describe their field research. Deep in the Southern Ocean, Marion Island is a platform for breeding seals and seabirds
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Posted by admin in Biology, Environment, Featured, Life, Science in Society on 19. Feb, 2010 | No Comments
In the latest Quest
Invasive aliens in Antarctica Even the remote Antarctic continent and its sub-Antarctic islands and seas are troubled by invasive alien species. By Anne M Treasure The introduction of invasive alien species has been recognised as a major threat to biodiversity and ecosystems and the resulting effects have been
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11
Feb
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tagged: animal migration, magnetic signature, Quest, Quest Interactive, Quest Science magazine, salmon spawning, Science magazineNo Comments
Animal magnetism: First evidence that magnetism helps salmon find home
Posted by Bridget in Biology, Life
Salmon appear to seek the magnetic signature of their home river during their spawning migration. When migrating, sockeye salmon typically swim up to 6 000km into the ocean and then, years later, navigate back to the upstream reaches of the rivers in which they were born
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11
Feb
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tagged: cooperation, plants, Quest, Quest Interactive, Quest Science magazine, Science magazineNo Comments
Plants help their own, too, study finds
Posted by Bridget in Biology, Life
Courtesy of University of Colorado at Boulder and World Science staff Not unlike dolphins, people and many other animals, some plants help their own kin, a study suggests. Researchers studied maize, in which each fertilized kernel actually contains two small organisms: an embryo of a new
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11
Feb
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tagged: Quest, Quest Interactive, Quest Science magazine, Science magazine, wind turbineNo Comments
Endurance test of an offshore wind turbine in the laboratory
Posted by Bridget in Physics & Maths, Science in Society, Technology
The control unit is the ‘brain’ of the wind turbine. It reacts immediately to the wind speed. In stormy weather, it switches the turbine off if necessary, or immediately decides how the rotor blades need to be adjusted to achieve the best energy yield. Using a robust simulation
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11
Feb
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tagged: quality control, Quest, Quest Interactive, Quest Science magazine, Science magazineNo Comments
Quality control at the point of a finger
Posted by Bridget in Physics & Maths, Technology
For production operations, quality assurance over the process chain is indispensable: it is the only way to detect problems at an early stage and lower additional costs. Fraunhofer researchers developed an efficient type of quality control: With a pointing gesture, employees can input any detected defects to car
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11
Feb
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tagged: cancer, nanotechnology, Quest, Quest Interactive, Quest Science magazine, Science magazineNo Comments
Tiny capsule effectively kills cancer cells
Posted by Bridget in Health, Technology
Bill Kisliuk A tiny capsule invented at a UCLA lab could go a long way toward improving cancer treatment. Devising a method for more precise and less invasive treatment of cancer tumours, a team led by researchers from the UCLA Henry Samueli School of Engineering and
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11
Feb
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tagged: AIDS, HIV, Quest, Quest Interactive, Quest Science magazine, Science magazine, sexually transmitted diseases, social mediaNo Comments
Social media may prove useful in prevention of HIV, STDs, study shows
Posted by Bridget in Health, Science in Society
Enrique Rivero Facebook and other social networking technologies could serve as effective tools for preventing HIV infection among at-risk groups, new UCLA research suggests. In a study published in the February issue of the peer-reviewed journal Sexually Transmitted Diseases, researchers found that African American and Latino
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