JLab, College of W&M researchers study radiation blockers while conducting nuclear imaging of Iodine uptake in mouse tissues
Scientists have found that a dose five times higher than the FDA-recommended dosage of potassium iodide in the event of a nuclear accident is needed to protect small animals effectively from radioactive iodide in medical imaging procedures. The long-term animal nuclear imaging project is being conducted by a collaboration of biology and physics researchers
A group of scientists at the University of California, Berkeley, is giving new relevance to the term “sharper image” by creating a superlens that can overcome a limitation in physics that has historically constrained the resolution of optical images.
Using a thin film of silver as the lens and ultraviolet (UV) light, the researchers recorded the images of an array of nanowires and the word “NANO” onto an organic polymer at a resolution of about 60 nanometers. In comparison, curren
Chip-scale refrigerators capable of reaching temperatures as low as 100 milliKelvin have been used to cool bulk objects for the first time, researchers at the National Institute of Standards and Technology (NIST) report. The solid-state refrigerators have applications such as cooling cryogenic sensors in highly sensitive instruments for semiconductor defect analysis and astronomical research.
The work is featured in the April 25, 2005, issue of Applied Physics Letters.* The NI
An X-ray technique developed by physicists at the National Institute of Standards and Technology (NIST) is helping to improve the design and energy efficiency of the bright white lights often used to illuminate stadiums, roads and many other settings.
High-intensity gas discharge (HID) lamps produce 26 percent of the nation’s light output, but, as a result of their high energy efficiency, consume only 17 percent of the electricity used for lighting. Continuing improvements
Striking Image of Nebula N214C taken with ESO’s NTT at La Silla
The nebula N214, a large region of gas and dust located in a remote part of our neighbouring galaxy, the Large Magellanic Cloud, is a quite remarkable site were massive stars are forming. In particular, its main component, N214C (also named NGC 2103 or DEM 293), is of special interest since it hosts a very rare massive star, known as Sk-71 51 and belonging to a peculiar class with only a dozen known members in t
New data from the Department of Energy’s Jefferson Lab shows the pentaquark doesn’t appear in one place it was expected. The result contradicts earlier findings in this same region and adds to the controversy over whether research groups from around the world have caught a glimpse of the so-called pentaquark, a particle built of five quarks.
Researchers in Jefferson Lab’s CEBAF Large Acceptance Spectrometer (CLAS) collaboration took data with a high energy photon beam on a liquid hydrogen
New results from research performed at the Department of Energy’s Jefferson Lab hint that strange quarks may contribute to the proton’s magnetic moment. If confirmed by data to be taken later this year, these surprising results would indicate that strange quarks in the proton’s quark-gluon sea contribute to at least one of the proton’s intrinsic properties. The HAPPEx results strengthen the trend found by the SAMPLE experiment at MIT-Bates and the A4 experiment at the Mainz
Lifetime of solar nebual
The oxygen and magnesium content of some of the oldest objects in the universe are giving clues to the lifetime of the solar nebula, the mass of dust and gas that eventually led to the formation of our solar system.
By looking at the content of chondrules and Calcium Aluminum- rich inclusions (CAIs), both components of the primitive meteorite Allende, Lab physicist Ian Hutcheon, with colleagues from the University of Hawaii at Manoa, the Tokyo I
PPARC Kite Club Event
The Future of Medical Imaging and Radiotherapy
28th April 2005
10.30 am – 5.00 pm (registration from 9.45 am)
Institute of Physics, Portland Place, London
It is widely recognised that cancer affects a large percentage of the population with more than 1 in 3 people being diagnosed with the disease during their lifetime. A lesser known fact is that most of the current diagnostic techniques used for identifying cancer come from technologies
Nanocomposite materials seem to flout conventions of physics. In the latest example of surprising behavior, reported* by scientists at the National Institute of Standards and Technology (NIST) and Brookhaven National Laboratory, a class of nanostructured materials that are key components of computer memories and other important technologies undergo a previously unrecognized shift in the rate at which magnetization changes at low temperatures.
The team suggests that the apparent
Project looked at massive mobile launch platform, shuttle transporter
Sandia National Laboratories recently conducted a series of tests to help NASA understand the fatigue on the space shuttle caused during rollout from the Kennedy Space Center assembly building to the launch pad – a four-mile trip.
The tests are part of NASA’s return-to-flight mission, with the first flight scheduled between May 15 and June 3.
Sandia, a National Nuclear Security Admi
New state of matter more remarkable than predicted — raising many new questions
The four detector groups conducting research at the Relativistic Heavy Ion Collider (RHIC) — a giant atom “smasher” located at the U.S. Department of Energy’s Brookhaven National Laboratory — say they’ve created a new state of hot, dense matter out of the quarks and gluons that are the basic particles of atomic nuclei, but it is a state quite different and even more remarkable than had been predi
A fundamental number that affects the color of light emitted by atoms as well as all chemical interactions has not changed in more than 7 billion years, according to observations by a team of astronomers charting the evolution of galaxies and the universe.
The results are being reported today (Monday, April 18) at the annual meeting of the American Physical Society (APS) by astronomer Jeffrey Newman, a Hubble Fellow at Lawrence Berkeley National Laboratory representing DEEP2, a
Tom Cowan’s team cultivating new laser technology for more precise cancer treatments
Tom Cowan’s team is thinking smaller, but with big impact. Particle accelerators are a key research tool in a high energy physicist’s arsenal, but they take up a lot of space – miles and miles of it. But at the University of Nevada, Reno, smaller is better.
Cowan, director of the Nevada Terawatt Facility at the University, and his research partners have produced a proton
ESA’s SMART-1 mission to the Moon has been monitoring the illumination of lunar poles since the beginning of 2005, about two months before arriving at its final science orbit.
Ever since, the AMIE on-board camera has been taking images which are even able to show polar areas in low illumination conditions. Images like these will help identify if peaks of eternal light exist at the poles.
SMART-1 took views of the North Polar Region from a distance of 5000 km during a paus
The beginnings of precious metals like gold can be traced to the blink of an eye in an exploding star billions of years ago, and scientists at the National Superconducting Cyclotron Laboratory (NSCL) at Michigan State University have been able to scrutinize a crucial step in that process.
By reproducing the processes inside supernovas in a laboratory, scientists have resurrected an isotope of nickel – one that no longer exists in nature, but is an important link in the birth of t
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