Sleep disorders linked to faulty brain chemistry, study finds
...y through the imaging techniques known as positron emission tomography (PET) and single-photon emission computed tomography (SPECT). The new studies used radioactive PET and SPECT tracers that attach spe...Connecticut chemist receives award for cleaner air technology
...ociety for developing technologies that reduce the emission of greenhouse gases. He received one of two 2003 Industrial Innovation Awards at the American Chemical Society's Northeast regional meeting in Saratoga Springs, N.Y. Nicknamed the "father of catalytic combustion," Pfefferle invented the original cata...High-speed images show how cells mobilize for immune response
...to the cell, which is detected by the fluorescence emission of a calcium-sensing dye. As a cell membrane begins to surround its target, two calcium waves begin to circulate. When the target is completely surrounded, one wave traveling around the cell's perimeter splits in two, with the second wave encircling ...Virginia Tech inventions, creations can improve lives
...ird patents are for an "Apparatus for pyroelectric emission lithography using patterned emitter" (6,476,402 ) ...itter" (6,479,924 ). The apparatus allows electron emission suitable for lithography. A pyroelectric emitter, or ferroelectric emitter, is patterned using a mas...In some patients with chronic fatigue syndrome, left ventricular function may be involved
...on of cardiac blood pools with a gamma camera. The emission counts are processed to estimate volumes of blood in the left ventricle (the heart's main chamber) at the end of relaxation and at the end of contraction periods. Their ratio (called the ejection fraction, or EF) is a measure of myocardial contractil...Physics tip sheet #34 - April 1, 2003
...electron "searchlight". This process, called Auger emission has been known of since 1925 but this is the first observation of the strong focusing effect from a free molecule. Journal article: Available to journalists on request...Integration of nanotechnology with biology and medicine will result in major medical advances
... for magnetic resonance imaging (MRI), in positron emission tomography (PET) for molecular imaging in patients, or as fluorescent tracers in optical microscopy. Nanoparticles also have advantages over conventional dyes: they fade less quickly, they are less toxic to cells and they can be used in combination ...Alcohol researchers identify a genetic basis of pain response
...ldman, Zubieta, and their colleagues used positron emission tomography (PET) targeting the endogenous opioid system to examine the effects of a specific genetic variant on neurochemical brain responses to sustained pain. The researchers also used questionnaires that measure pain-related sensory and affective ...Meeting the nitrogen management challenge: Arresting the nitrogen cascade
... the development of policies that address nitrogen emission reductions....The frontier of microelectronics: Building nano-machines, part by part
...s a "unique exchange of energy between the optical emission of the quantum dot and the response of the nanostructured resonator." Quantum dots are clusters of 100s or 1000s of atoms. In other words, devices can be developed where the optical energy is channeled much more efficiently than we can obtain now. By...Braille found to be essential, regardless of age of blindness
...tional magnetic resonance imaging (fMRI), positron emission tomography (PET) and transcranial magnetic stimulation (TMS). These studies established that visual cortex, key to processing visual signals, plays a functional role enabling the blind perform Braille reading. Controversy persists, however, concer...Researchers respond to threat, look for anthrax
... probe, which is a key component in monitoring the emission of airborne particles from the stacks of nuclear power plants....NIH study shows MRI provides faster, more accurate way to diagnose heart attacks
...hocardiography, coronary angiography, and positron emission tomography," added Dr. Robert S. Balaban, scientific director of the NHLBI Laboratory Research Program, and a co-author of the paper. "MRI technology could help us get another 20 percent of patients with acute coronary syndrome to life-saving treatme...Too little attention is paid to the side effects of emission-limiting measures
With measures aimed at reducing the emission of pollutants such as ammonia, policy makers pay too little attention to the consequences for the emission of other substances. This is revealed in a computer model constructed by Corjan Brink from Wageninge...Peoples' household dynamics crucial to biodiversity
...o. Increased energy consumption also increases the emission of greenhouse gases, which is believed to contribute to global warming. "In larger households, the efficiency of resource consumption will be a lot higher because more people share things," Liu said. "Usually, many people will share living space and ...Stretch of I-40 part of ORNL, UT environmental lab initiative
...ke to determine, for example, whether the stricter emission regulations for trucks are achieving actual benefits to the environment," said Ralph McGill, who heads the project and is a researcher in ORNL's Engineering Science and Technology Division. "In the immediate future, though, we're hoping to learn more...Prospect of greenhouse gas reduction drives biofuels market
... proposed directives in response to Kyoto Protocol emission reductions goals and to gain energy security for the members of the European Union. Biofuels are alternatives for petroleum-based fuels, produced from domestic renewable resources. Fuel ethanol is the most widely used biofuel for transportation appl...Hopkins study finds combined PET-CT better at detecting ovarian cancer
...ologists have found that a combination of positron emission tomography (PET) and computed tomography (CT) detects cancer spread better than PET alone. In a study to be presented at the Radiological Society of North America (Abstract #1458, 10:57 AM, Thursday, December 5, Room S502AB), researchers reported th...Three inferior prefrontal regions of the brain found receptive to somatosensory stimuli
...t has incorporated two studies, combining positron emission tomography with neutral tactile (touch) stimulation to determine if these same regions in the human brain respond accordingly. The authors of "Somatosensory Processing in the Human Inferior Prefrontal Cortex" are Matthew C. Hagen and Jose V. Pard...New tool for studying animal models of neurological and psychiatric diseases
...ratory have demonstrated that a miniature positron emission tomography (PET) scanner, known as microPET, and the chemical markers used in traditional PET scanning are sensitive enough to pick up subtle differences in neurochemistry between known genetic variants of mice. This "proof-of-principle" experiment,...