News articles tagged with 'frequency'
New laser technology prepares to revolutionise communications
— 29 Mar 2011 16:37 | TechnologyAs fibre optic technology continues to advance, it faces challenges from both its physical properties and its use of infrastructure. One emerging high-speed solution being developed…
Sildenafil reduces Raynaud's frequency in patients with systemic sclerosis
— 9 Mar 2011 18:05 | HealthResearchers in Europe reported that treatment with modified-release sildenafil significantly reduced the frequency of attacks of Raynaud's phenomenon in patients with limited cutaneous…
Before the explosion - volcano's warning tremors explained
— 24 Feb 2011 19:20 | Geology and palaeontologyNo matter their size or shape, explosive volcanoes produce tremors at similar frequencies for minutes, days or weeks before they erupt. In the Feb. 24 issue of the journal Nature, researchers…
Scientists build world's first anti-laser
— 18 Feb 2011 17:56 | TechnologyMore than 50 years after the invention of the laser, scientists at Yale University have built the world's first anti-laser, in which incoming beams of light interfere with one another…
Metamaterials approach makes better satellite antennas
— 31 Jan 2011 16:10 | TechnologyCheaper, lighter and more energy-efficient broadband devices on communications satellites may be possible using metamaterials to modify horn antennas, according to engineers from Penn…
Use of antidepressant associated with reduction in menopausal hot flashes
— 19 Jan 2011 16:59 | HealthWomen who were either in the transition to menopause or postmenopausal experienced a reduction in the frequency and severity of menopausal hot flashes with the use of the antidepressant…
Flexible wings driven by simple oscillation may be viable for efficient micro air vehicles
— 23 Nov 2010 17:47 | TechnologyIn the future, tiny air vehicles may be able to fly through cracks in concrete to search for earthquake victims, explore a contaminated building or conduct surveillance missions for…
Passive smokers at increased risk of hearing loss
— 16 Nov 2010 11:00 | HealthNon-smokers who regularly breathe in others' tobacco smoke are at increased risk of some degree of hearing loss, reveals research published online in Tobacco Control…
Global map of the sickle cell gene supports 'malaria hypothesis'
— 3 Nov 2010 11:50 | HealthAt a global scale, the sickle cell gene is most commonly found in areas with historically high levels of malaria, adding geographical support to the hypothesis that the gene, whilst…
Portable breast scanner allows cancer detection in the blink of an eye
— 27 Oct 2010 11:36 | HealthProfessor Zhipeng Wu has invented a portable scanner based on radio frequency technology, which is able to show in a second the presence of tumours - malignant and benign - in the breast…