Expedition discovers new sea current off African coast
Researchers on board the Pelagia, the research vessel belonging to the Netherlands Institute for Sea Research (NIOZ), have discovered an interesting rotational current in the sea off the coast of South Africa. Unlike previously identified 'Agulhas rings', this one, a cyclone, rotates clockwise. The water in the centre is also about 50 centimetres... view more... (2001-07-26)
Indian eddies supply Atlantic Ocean with warm water
Water from the Indian Ocean does not reach the South Atlantic Ocean continuously, but in separate packages. These are called Agulhas eddies, after the current along the east coast of Southern Africa where they originate from. view more (2005-10-11)
The Agulhas Current, in the southern hemisphere, may influence climate in Europe
Her PhD thesis "Surface and Deep Circulation off South Africa: Agulhas Leakage Influence on the Meridional Overturning Circulation During the Last 345 kyr" presented data on a major ocean current in the southern hemisphere, the Agulhas Current, which transports warm waters from the tropical Indian Ocean to the southern tip of Africa. view more (2009-03-11)
Climate kick from the Southern Ocean
This much was already known: in the closing phase of the last ice age the Southern Hemisphere began warming first. As a result, the Antarctic sea ice melted. It was at least a thousand years later - as evidenced by investigations of Greenland ice cores - that the high northern latitudes began to get warmer. Sea ice in the North Atlantic retreated... view more... (2003-07-29)
Smokers not only take more time off work but they are less productive
Smokers not only take more time off work, but they are also less productive when they are working, shows research in Tobacco Control. In 1990 the US Office of Technology Assessment estimated that smokers cost employers $47 billion dollars in premature death and disability. The study involved around 300 ticket sales staff a large US airline. One... view more... (2001-09-04)
NHS policies fail to strike a balance between equity and efficiency
The NHS is facing a dilemma between the goals of equity and efficiency. An editorial in this week's BMJ reports that there is no consensus on how to deal with policies that may cause conflict, often leading to inconsistent judgements in the development of health policies. The authors cite several examples of inconsistency among current NHS... view more... (2001-10-03)
High Value Semiconducting Carbon Nanotubes
Moore's Law states that the number of transistors on a chip doubles every eighteen months. However current silicon technologies are approaching the limits imposed by quantum mechanics, which will stop Moore's Law in its tracks within 20 years. New materials and techniques must be found to complement and increase the capabilities of the current... view more... (2004-07-09)
New transistor makes brighter future for display screens
Researchers from Myongji University, Korea, have developed a way to improve liquid crystal displays (LCD), which could revolutionise display technology. Published today in the Institute of Physics journal Semiconductor Science and Technology, Professor Yong-Sang Kim and his team propose a new structure for polycrystalline silicon thin film... view more... (2003-07-03)
UK researchers find way to reduce power consumption of transistors in computer chips
University of Kentucky researchers have discovered a means of reducing gate leakage current of transistors in computer chips that will permit chip producers to continue developing more efficient and powerful chips with reduced power consumption. view more (2005-12-07)
Radiation Dose Can Be Reduced For "Triple Rule-Out" Coronary CT Angiography
Physicians can dramatically reduce the radiation dose delivered to patients undergoing coronary CT angiography in a "triple rule-out" protocol by simply using tube current modulation, according to a study performed at Thomas Jefferson University Hospital in Philadelphia, PA. view more (2009-04-06)
Strain has major effect on high-temp superconductors
Just a little mechanical strain can cause a large drop in the maximum current carried by high-temperature superconductors, according to novel measurements carried out by the National Institute of Standards and Technology (NIST). view more (2007-02-16)
Patient expectations of care may exceed government targets
Patients may have expectations for access to primary care in excess of current government targets, finds a study in this week's BMJ. Patients also have high expectations of continuity of care. Researchers analysed data from general practice research studies and routine quality assessment activities undertaken by practices and primary care trusts.... view more... (2003-01-29)
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