16-12-2012   -   Physics

Thu 13 Dec 2012 2012 Physics on a plane: A group of physicists from Japan have taken to the skies to grow crystals under zero gravity. This is necessary to overcome the limitations of the laboratory in order to examine the peculiar dynamics of helium crystals on a much larger scale than can be achieved with ordinary materials. Their results could help researchers reveal the fundamental physics behind the development of crystals, whilst also unveiling phenomena that are usually hidden by gravity. The helium crystals were grown using high pressures, extremely low temperatures (0.6K/-272°C) and by splashing them with a superfluid – a state of quantum matter which behaves like a fluid but has zero viscosity, meaning it has complete resistance to stress. Superfluids can also flow through extremely tiny gaps without any friction. more

  22-11-2012   -   Energy

Wed 21 Nov 2012 New Research reveals Nanotechnology simplifies hydrogen production for clean energy. In the first-ever experiment of its kind, researchers have demonstrated that clean energy hydrogen can be produced from water splitting by using very small metal particles that are exposed to sunlight. Published results implies that the use of gold particles smaller than one nano-meter resulted in greater hydrogen production than other co-catalysts tested. more

  01-11-2012   -   ICT

Thu 1 Nov 2012 Titan supercomputer debuts: Computer churns through more than 20,000 trillion calculations each second (20 petaflops). Th Oak Ridge National Laboratory in the USA has just launched a new era of scientific super-computing with Titan, a system that is employing a family of processors called graphic processing units first created for computer gaming. Titan will be 10 times more powerful than ORNL's last world-leading system, Jaguar, while overcoming power and space limitations inherent in the previous generation of high-performance computers. The Cray XK7 system contains 18,688 nodes, with each holding a 16-core AMD Opteron 6274 processor and an NVIDIA Tesla K20 graphics processing unit (GPU) accelerator. Titan also has more than 700 terabytes of memory. The combination of central processing units (CPU), the traditional foundation of high-performance computers, and more recent GPUs will allow Titan to occupy the same space as its Jaguar predecessor while using only marginally more electricity.more

  31-10-2012   -   Agriculture

Wed 31 Oct 2012 Agriculture and food production contribute up to 29 percent of global greenhouse gas emissions. Feeding the world releases up to 17,000 megatons of carbon dioxide into the atmosphere annually, according to a new analysis. But while the emissions "footprint" of food production needs to be reduced, a companion policy brief lays out how climate change will require a complete re-calibration of where specific crops are grown and livestock are raised.more

  14-10-2012   -   Chemistry

Wed 10 Oct 2012 The Nobel Prize in Chemistry 2012 was awarded jointly to Robert J., USA, and Brian K. Kobilka, USA “for studies of G-protein–coupled receptors”more

  09-10-2012   -   Physics

Tue 9 Oct 2012 The Nobel Prize in Physics 2012 was awarded jointly to Serge Haroche (Fra) and David Wineland (USA) for "ground-breaking experimental methods that enable measuring & manipulation of individual quantum systems"more

  09-10-2012   -   Medicine

Mon 8 Oct 2012 The Nobel Prize in Medicine 2012 was awarded jointly to Sir John B. Gurdon (UK) and Shinya Yamanaka (JPN) "for the discovery that mature cells can be reprogrammed to become pluripotent". more

  08-10-2012   -   Chemistry

Sun 7 Oct 2012 Scientists have been able to differentiate the chemical bonds in individual molecules for the first time using a technique known as non contact atomic force microscopy (AFM). The results push the exploration of using molecules and atoms at the smallest scale and could be important for studying graphene devices, which are currently being explored by both industry and academia for applications including high-bandwidth wireless communication and electronic displays. more

  01-10-2012   -   Biology

Thu 25 Sep 2012 A novel approach for single molecule electronic DNA sequencing. Researchers have developed a novel approach to potentially sequence DNA in nanopores electronically at single molecule level with single-base resolution. DNA sequencing is the driving force behind key discoveries in medicine and biology. The reported nanopore-based sequencing by synthesis (Nano-SBS) strategy can accurately distinguish four DNA bases by detecting 4 different sized tags released from 5'-phosphate-modified nucleotides at the single molecule level for sequence determination. more

  05-09-2012   -   Physics

Wed 5 Sep 2012 The world's shortest 67-attosecond extreme ultraviolet laser pulse is achieved. An attosecond is an incomprehensible quintillionith (15 million billion) of a second. The accomplishment is even more remarkable because the team did it without the use of specialized equipment including a mile-long particle accelerator or a Superdome-sized synchrotron. Shorter light pulses helps open a new door to a previously hidden world, where we can watch electrons move in atoms and molecules, and follow chemical reactions as they take place. It is astounding to imagine that we may now be able to watch quantum mechanics in process. Quantum mechanics is the study of physics at the microscopic level, specifically looking at energy and matter on this miniscule scale.

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