A team led by Dutch researcher Jan Boon from the Royal Netherlands Institute for Sea Research (Royal NIOZ) has discovered that one isomer of the toxic substance HBCD accumulates in dolphins and porpoises. The animals metabolise the other two isomers. HBCD has partially replaced other flame retardants already banned in Europe. However, according to the researchers it is still questionable whether HBCD is also less environmentally harmful. The results have just been published in the scientific journal Environmental Science & Technology (1 April 2005 issue).
HBCD, hexabromocyclododecane, is a much-used flame retardant in insulating foam and furniture upholstery. It disrupts the thyroid function and the functioning of the nervous system in mammals. The researchers only found the alpha isomer of HBCD in the blubber of porpoises and dolphins. Boons team were Bart Zegers from the Institute for Biodiversity and Ecosystem Dynamics (Universiteit van Amsterdam), Timo Hamers from the Institute for Environmental Studies (Vrije Universiteit Amsterdam) and Graham Pierce from the University of Aberdeen.
The porpoises and dolphins investigated were stranded on the coasts of Scotland, Ireland, the Netherlands, Belgium, France and northwest Spain. By far the most HBCD was found in the blubber of animals from the Irish Sea and the West Coast of Scotland. Therefore the researchers suspect that this HBCD originates from a source discharging into the Irish Sea.
Dr Jan P. Boon | EurekAlert!
Novel mechanisms of action discovered for the skin cancer medication Imiquimod
21.10.2016 | Technische Universität München
Second research flight into zero gravity
21.10.2016 | Universität Zürich
Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.
"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...
In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.
A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...
By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.
"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...
COMPAMED has become the leading international marketplace for suppliers of medical manufacturing. The trade fair, which takes place every November and is co-located to MEDICA in Dusseldorf, has been steadily growing over the past years and shows that medical technology remains a rapidly growing market.
In 2016, the joint pavilion by the IVAM Microtechnology Network, the Product Market “High-tech for Medical Devices”, will be located in Hall 8a again and will...
'Ferroelectric' materials can switch between different states of electrical polarization in response to an external electric field. This flexibility means they show promise for many applications, for example in electronic devices and computer memory. Current ferroelectric materials are highly valued for their thermal and chemical stability and rapid electro-mechanical responses, but creating a material that is scalable down to the tiny sizes needed for technologies like silicon-based semiconductors (Si-based CMOS) has proven challenging.
Now, Hiroshi Funakubo and co-workers at the Tokyo Institute of Technology, in collaboration with researchers across Japan, have conducted experiments to...
14.10.2016 | Event News
14.10.2016 | Event News
12.10.2016 | Event News
21.10.2016 | Health and Medicine
21.10.2016 | Information Technology
21.10.2016 | Materials Sciences