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New work by two researchers at HP Laboratories Bristol sets out to solve one of the major difficulties in quantum computer architectures that use directly interacting qubits.

The problem is that the million-or-so qubits necessary to do useful calculations in a quantum computer would all feel the presence of each other, meaning that the information would leak in an uncontrollable way. The more qubits that are put together this way, the harder it is to control them.

The

Researchers have uncovered how members of one family of antibiotics kill bacteria that make people sick.

This new knowledge may help drug developers make slight changes to these antibiotics to make them more effective against drug-resistant strains of bacteria, said Irina Artsimovitch, a study co-author and an assistant professor of microbiology at Ohio State University.

The antibiotics studied belong to the rifamycin family. Until now, researchers believed that these antibi

They are called “hellfire”, “smart bombs”, “advanced penetrators” or “bunker-busters”. They all have the component of depleted Uranium (DU) in common. DU remains after the fissile isotope 235U has been extracted from natural Uranium for the production of nuclear fuel or nuclear weapons. However 235U only comes to 5% of the total Uranium content, so that DU consists of the isotope 238U almost entirely. Between DU and natural Uranium there are no chemical and toxicological differences, merely the ra

British researchers have hit on a clever way to search for ancient ozone holes and their relationship to mass extinctions: measure the remains of ultraviolet-B absorbing pigments ancient plants left in their fossilized spores and pollen.

To develop the approach, researcher Barry Lomax and his colleagues at the University of Sheffield and other leading UK institutions analyzed spores held in the British Antarctic Survey’s collection from South Georgia Island, a UK territor

I. Highlights, including authors and their institutions

The following highlights summarize research papers in Geophysical Research Letters (GL). The papers related to these Highlights are printed in the next paper issue of the journal following their electronic publication.

You may read the scientific abstract for any of these papers by going to www.agu.org/pubs/search_options.shtml and inserting

Testing of “substances”, transplanted cells and dressings for wound treatmentFurther Information: PDF TuTech Innovation GmbH (TuTech)Phone: +49 (0)40/76629-6541