29-03-2010   -   Physics

Mon 29 Mar 2010 Using the latest in aberration-corrected electron microscopy, researchers at the DoE Oak Ridge National Laboratory and their colleagues have obtained the first images that distinguish individual light atoms such as boron, carbon, nitrogen and oxygen. The images were obtained with a Z-contrast scanning transmission electron microscope (STEM). Individual atoms of carbon, boron, nitrogen and oxygen--all of which have low atomic numbers--were resolved on a single-layer boron nitride sample.more

  07-03-2010   -   Medicine

Mon 8 Mar 2010 Molecular Imaging Technique Uses Ultrasound and Microscopic Bubbles to Target Cancer Cells. An imaging technique combining ultrasound and specially modified contrast agents may allow researchers to noninvasively detect cancer and show its progression, according to research published in the March issue of The Journal of Nuclear Medicine (JNM). The technique enables researchers to visualize tumor activity at the molecular level. more

  07-03-2010   -   Chemistry

Sun 7 Mar 2010 Rice University researchers have found a way to stitch graphene and hexagonal boron nitride (h-BN) into a two-dimensional quilt that offers new paths of exploration for materials science. The technique has implications for application of graphene materials in microelectronics that scale well below the limitations of silicon determined by Moore's Law.more

  23-02-2010   -   Physics

Tue 23 Feb 2010 Physicists Use Ultra-Fast Lasers to Open Doors to New Technologies Unheard of Just Years Ago. For nearly half a century, scientists have been trying to figure out how to build a cost-effective and reasonably sized X-ray laser that could, among other things, provide super high-resolution imaging. Recent breakthroughs by a joint institute of Colorado University and the National Institute of Standards and Technology, have paved the way on how to build a tabletop X-ray laser that could be used for super high-resolution imaging, while also giving scientists a new way to peer into a single cell and gain a better understanding of the nanoworld. Both of these feats could lead to major breakthroughs in many fields including medicine, biology and nanotechnology development.more

  15-02-2010   -   Biology

Mon 15 Feb 2010 Biologists Image Birth of Blood-Forming Stem Cells in Embryo. Biologists at UC San Diego have identified the specific region in vertebrates where adult blood stem cells arise during embryonic development. Their discovery is a critical first step for the development of safer and more effective stem cell therapies for patients with leukemia, multiple myeloma, anemia and a host of other diseases of the blood or bone marrow. The researchers say their time-lapse imaging of the process, by which primitive embryonic tissues first produce the parent stem cells that produce all adult blood cells over the life of an individual, should help guide future efforts to repair and replace this cell population for therapeutic purposes.more

  09-02-2010   -   Chemistry

Tue 9 Feb 2010 Ultra-Cold Chemistry: First Direct Observation of Exchange Process in Quantum Gas. Considerable progresses made in controlling quantum gases open up a new avenue to study chemical processes. Rudolf Grimm's research team has now succeeded in directly observing chemical exchange processes in an ultracold sample of cesium atoms and Feshbach molecules. more

  07-02-2010   -   Energy

Sun 7 Feb 2010 Breakthrough for Hybrid Solar Cells. Scientists at the Department of Microsystems Engineering (IMTEK) and the Freiburg Materials Research Center (FMF) have succeeded in developing a method for treating the surface of nanoparticles which greatly improves the efficiency of organic solar cells. The researchers were able to attain an efficiency of 2 percent by using so-called quantum dots composed of cadmium selenide. more

  20-01-2010   -   Physics

Wed 20 Jan 2010 Physicists Tie Light in Knots. The remarkable feat of tying light in knots has been achieved by a team of physicists working at the universities of Bristol, Glasgow and Southampton, UK, reports a paper in Nature Physics this week. more

  20-01-2010   -   Medicine

Tue 19 Jan 2010 Atomic Structure of a Major Cancer Drug Target Cracked. Researchers at the University of Helsinki, Finland, and the Paul Scherrer Institute (PSI) in Villigen, Switzerland, have determined the crystal structure of the ligand binding domain of a vascular endothelial growth factor (VEGF) receptor in complex with one of its ligands (VEGF-C).


  12-01-2010   -   Agriculture

Wed 13 Jan 2010 How plants 'feel' the temperature rise? Plants are incredibly temperature sensitive and can perceive changes of as little as one degree Celsius. New research shows how they not only 'feel' the temperature rise, but also coordinate an appropriate response -- activating hundreds of genes and deactivating others; it turns out it's all about the way that their DNA is packaged. The new findings may help to explain how plants will respond in the face of climate change and offer scientists new leads in the quest to create crop plants better able to withstand high temperature stress. more

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