In the journal Review of Scientific Instruments, researchers report on a new way to accurately synchronize clocks. The new method uses both GPS and the Internet to set clocks within 10 nanoseconds of a reference clock located anywhere on Earth.
On behalf of the City of Philadelphia, Mayor Michael A. Nutter has proclaimed July 20, 2010 to be “Medical Physics Day,” in celebration of the city’s important tradition of medical research and to greet the attendees at the meeting of the American Association of Physicists in Medicine (AAPM), occurring in Philadelphia July 18-22.
Today, at the 52nd Annual Meeting of the American Association of Physicists in Medicine (AAPM) in Philadelphia, a group of researchers from Stanford University will describe the latest developments toward their goal of integrating two existing medical devices.
A new image-processing algorithm gives radiologists all of the information they need using as up to 20 times less radiation. The research will be presented at the 52nd Annual Meeting of the American Association of Physicists in Medicine (AAPM) in Philadelphia.
A study presented today at the 52nd Annual Meeting of the American Association of Physicists in Medicine (AAPM) shows that children with brain tumors who undergo radiation therapy (the application of X-rays to kill cancerous cells and shrink tumors) may benefit from a technique known as "intensity modulated arc therapy" or IMAT.
Two new studies announced this week have tested three different methods for accurately measuring breast density.
Next week the city of Philadelphia will host the 52nd annual meeting of the American Association of Physicists in Medicine (AAPM), the premier organization in medical physics, a broadly-based scientific and professional discipline encompassing physics principles and applications in medicine and biology.
A new approach to processing X-ray data could lower by a factor of ten or more the amount of radiation patients receive during cone beam CT scans, report researchers from the University of California, San Diego.
The 52nd meeting of the American Association of Physicists in Medicine (AAPM) convenes from July18 - 22, 2010 in Philadelphia. AAPM is the premier organization in medical physics, a broadly-based scientific and professional discipline encompassing physics principles and applications in medicine and biology.
ols to measure a core sample's electrical anisotropy have been sadly lacking, says John Kickhofel. To solve this problem, he and colleagues at Schlumberger found inspiration in a type of logging technology currently used by the modern oil industry. They created a device capable of noninvasively measuring electrical conductivity.
Now a group of scientists at Nanjing University in China have shown how a rather wide spectrum of light -- a rainbow of radiation -- can be trapped in a single structure. They propose to do this by sending the light rays into a self-similar-structured dielectric waveguide (SDW) -- essentially a light pipe with a cladding of many layers.
The movement of long chain polymers through nanopores is a key part of many biological processes, including the transport of RNA, DNA, and proteins. New research reported in The Journal of Chemical Physics describes an improved theoretical model for this type of motion.
Research reported in The Journal of Chemical Physics, which is published by the American Institute of Physics, provides the first real-time measurements of the time dependence of the individual steps of dissociation of a complex consisting of two rare gas atoms and a halogen molecule.
At the 52nd meeting of the American Association of Physicists in Medicine (AAPM), which convenes from July 18 - 22, 2010 in Philadelphia, PA, thousands of scientists and board-certified health professionals will gather to share the latest developments in medical imaging and radiation therapy, examine new clinical and laboratory data, and discuss many of the ethical and regulatory issues that face the field today.
Thousands of scientists and health professionals from the field of medical physics will meet at the 52nd meeting of the American Association of Physicists in Medicine (AAPM) from July 18 - 22, 2010 in Philadelphia, Pennsylvania. They will present the latest technological advances in medical imaging and radiation therapy and discuss the safety and regulatory issues facing the field today.
With the attention of sports fans worldwide focused on South Africa and the 2010 FIFA World Cup, U.S. scientist John Eric Goff has made the aerodynamics of the soccer ball a focus of his research.
Physicists concerned about proliferation of smaller, more efficient technologies that could be used to build nuclear weapons.
Integrated circuits, which enable virtually every electronics gadget you use on a daily basis, are constantly being pushed by the semiconductor industry to become smaller, faster, and cheaper. As has happened many times in the past and will continue in the future, integrated circuit scaling is perpetually in danger of hitting a wall that must be maneuvered around.
Wind turbines may be one of the best renewable energy solutions, but as turbines get larger they also get noisier, become more of an eyesore, and require increasingly larger expanses of land. One solution: ocean-based wind turbines. While offshore turbines already have been constructed, they've traditionally been situated in shallow waters, where the tower extends directly into the seabed. That restricts the turbines to near-shore waters with depths no greater than 50 meters -- and precludes their use in deeper waters, where winds generally gust at higher speeds.
Old glass is not the same as new glass -- and the difference is not just due to manufacturing techniques. Unlike crystalline solids, glasses change as they age, increasing packing density and stability. Ideally, a glass should be cooled slowly, maybe over 10,000 years or so, but that is not usually practical.
Since Richard Feynman's first envisioned the quantum computer in 1982, there have been many studies of potential candidates -- computers that use quantum bits, or qubits, capable of holding an more than one value at a time and computing at speeds far beyond existing silicon-based machines for certain problems. Most of these candidate systems, such as atoms and semiconducting quantum dots, work for quantum computing, but only at very low temperatures.
The American Physical Society, a leading organization of physicists, presses congressional leaders to increase research investments for future energy technologies that will strengthen energy security and reduce the likelihood of disastrous effects associated with fossil fuel exploration as evidenced by the BP oil spill.
A meeting in Miami this week will bring together some of the world's leading experts from inside and outside the clinic to discuss safety in radiation therapy -- a critical method for treating cancer.
BC5, a diamond-like material with an extremely high boron content, offers exceptional hardness and resistance to fracture, but unlike diamond, it is a superconductor rather than an insulator. A research team in China studying BC5 describes its potential in the Journal of Applied Physics.
In an important advance, scientists at the Tokyo Institute of Technology have created a stable, rewritable memory device that exploits a liquid crystal property called the “anchoring transition.” The work is described in the latest issue of the Journal of Applied Physics, which is published by the American Institute of Physics (AIP).
Two scientists in India have conceptually designed a new, cleaner motorcycle engine that uses compressed air to turn a small air turbine, generating enough power to run a motorcycle for up to 40 minutes. Their design is described in a recent issue of the Journal of Renewable and Sustainable Energy.
In the journal Chaos, which is published by the American Institute of Physics (AIP), scientists at the University of Alabama at Birmingham report powerful new techniques for studying the phenotypes related to genetic differences in the budding yeast, Saccharomyces cerevisiae.
As you go about your day-to-day activities, tiny bubbles of nitrogen come and go inside your tissues. This is not a problem unless you happen to experience large changes in pressure, as scuba divers and astronauts may. During large, fast pressure drops, bubbles can grow, causing “the bends.” A study in the Journal of Chemical Physics may provide a physical basis for the existence of these bubbles and help explain decompression sickness.
An understanding of particle diffusion in the presence of constrictions is essential in fields as diverse as drug delivery, cellular biology, nanotechnology, materials engineering, and spread of pollutants in the soil. When a driving force is applied, displacement of particles occurs as well as diffusion. A paper in The Journal of Chemical Physics quantifies the effects of periodic constrictions on drift and diffusion in systems experiencing a driving force.
Atmospheric research often focuses on clouds’ impact on weather and climate. Yet even low clouds are a long way off, with a base some 6,000 feet above earth. University of Notre Dame fluid dynamics and engineering professor Harindra Fernando works the other end of the air column closer to home—the bottom of the atmosphere in the city, which is known as the urban boundary layer.
The secret life of water just got weirder. For years water has been known to exist in 15 phases -- not just the merry threesome of solid, liquid and gas from grade school science. Now, University of Utah chemists have confirmed the coexistence of ice and liquid after water crystallizes at very low temperatures.
Anyone who is an online shopper and humanitarian might find this research project appealing. Physics professor John Scales is working on a low-cost, human-focused, high technology effort to stop the devastation of unexploded buried land mines with a novel acoustical/microwave detection system.
The American Institute of Physics (AIP) announced a new content-sharing agreement today between AIP's Physics Today, the world's leading magazine devoted to physics, and Wuli, a leading physics monthly published by the Chinese Physical Society in Beijing. Under the agreement, which will expire after one year, Wuli editors will each month translate and publish up to three pages of selections from Physics Today.
Today the American Institute of Physics (AIP) officially marks the opening of its new office in Beijing, China with a grand opening celebration in honor of this important event. The AIP office is located in the Haidian District, in the center of Beijing’s "Golden Triangle," comprising Tsinghua University, Peking University, and several major Institutes of the Chinese Academy of Sciences.
The American Physical Society (APS), a leading organization of physicists, today called for swift action on the U.S. House reauthorization of the 2007 bipartisan America COMPETES legislation, after the bill was sent back to the Science & Technology Committee for legislative changes.
A national summit of medical professionals meeting last month in Atlanta called for the creation of consensus scan techniques as a way of addressing the concerns of patients undergoing CT scans -- a common medical imaging procedure that uses X-rays to show cross-sectional images of the body.
The American Institute of Physics (AIP) is awarding its 2010 Andrew W. Gemant Award to Daniel Roberto Altschuler Stern, an astronomer and author from Puerto Rico who has written that we are all just "hijos de las estrellas" (children of the stars).
The American Institute of Physics (AIP) has appointed Philip ("Bo") Hammer its new Associate Vice President of Physics Resources, a position he will fill beginning on May 17, 2010.
A national "CT Dose Summit" in Atlanta, GA this week will bring together some of the world's leading experts on medical imaging to lay the foundation for assembling optimized guidelines for performing CT scans -- a common medical imaging procedure that uses X-rays to show cross-sectional images of the body.
The 159th meeting of the Acoustical Society of America (ASA) convenes in conjunction with NOISE-CON 2010 next week at the Baltimore Marriott Waterfront Hotel, Baltimore, MD. Reporters are invited to visit the ASA World Wide Press Room: http://www.acoustics.org/press
As global leaders discuss ridding the world of nuclear weapons, the chairman of the Nuclear Regulatory (NRC) Commission has acknowledged that a new laser technology— which could lead to even more global proliferation – deserves a closer examination.
The 159th meeting of the Acoustical Society of America (ASA) will be held jointly with NOISE-CON 2010, the 26th annual conference of the Institute of Noise Control Engineering (INCE-USA) from April 19-23, 2010 at the Baltimore Marriott Waterfront Hotel in Baltimore, MD.
The 159th meeting of the Acoustical Society of America (ASA) will convene jointly with NOISE-CON 2010, the 26th annual conference of the Institute of Noise Control Engineering (INCE-USA) April 19-23, 2010 at the Baltimore Marriott Waterfront Hotel, Baltimore, MD.
The American Institute of Physics (AIP) is celebrating March 30, 2010 as "World TeV Day" in recognition of the major milestone achieved at CERN's Large Hadron Collider (LHC) at approximately 1:06 p.m. CEST earlier today. At that precise moment, protons traveling at nearly the speed of light smashed together at energies of 7 TeV -- the highest-ever energetic particle collisions achieved in a laboratory.
What is research telling us about the noise levels to which soldiers in the field and sailors on the deck of aircraft carriers are exposed? What sounds do humpback whales make when they congregate in the summer? How can science help us understand how to achieve improved acoustics in the classroom and elsewhere in our schools? Can sound in a city trigger strong emotions in our brains? When people are exhausted, do their voices give them away?
The following press conferences will take place during the March Meeting of the American Physical Society (APS), to be held March 15-19, 2010 in the Portland Convention Center.
The March Meeting of the American Physical Society (APS) -- the largest physics meeting of the year -- will take place from March 15-19, 2010 in Portland, Oregon at the Oregon Convention Center and the Hilton Portland and Executive Tower Hotel.
The American Institute of Physics (AIP) announced today the hiring of three new publishing experts who will become part of a core leadership team that will help drive publishing forward into the 21st century.
The American Institute of Physics (AIP) announced today that it is opening a new office in Beijing, China—the first part of a multi-phase plan to expand globally. An official grand opening of the new China office is planned for June.
The following press conferences will take place during the 2010 joint meeting of the American Physical Society (APS) and the American Association of Physics Teachers (AAPT), to be held from February 13-17 in Washington, D.C.
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