How To Use Positron In A Sentence
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(If you are willing to postulate a matter-antimatter explosive, aka a positronium bomb, then P can increase by the maximal amount from 0 to e/3.)
Dark Matter: Still Existing
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The paper shows that positrons can see defects better than either optical or electron beam microscopes.
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I also began planning the experiment on the optical spectroscopy of positronium.
Steven Chu - Autobiography
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This is the mathematical basis of computed tomography and positron emission tomography.
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One imaging technique, positron emission tomography (PET) with the imaging agent fluorodeoxyglucose (FDG), may provide doctors with the information they need to make more informed treatment decisions, according to research published in the April issue of
THE MEDICAL NEWS
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In clinically unclear cases, use of an advanced imaging technique-positron emission tomography (PET) with the imaging agent fluorodeoxyglucose (FDG) and computed tomography
PhysOrg.com - latest science and technology news stories
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Aiming the lasers and microwaves precisely at the antiatoms using the right settings is very difficult right after the antiatoms are formed because they are in what's called an excited state - the positrons are orbiting the nucleus of the antiatom, but they're very far away, and they're constantly changing their orbit.
CBC | Top Stories News
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Electrons from the tissue combine with positrons from the radioactive tracer to produce gamma rays (similar to x-rays).
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By measuring the time between the pulse and the photon flash of electron-positron annihilation the team was able to map the defect regions.
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The positronium in this proposed rocket would be shuttled from the fuel tank to the engine core, where it annihilates, producing two gamma rays that evaporate silicon carbide from the nearby surface.
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Also, di-positronium is made from electrons and positrons which are hardly "ordinary" and can annihilate itself; no need to stick in extra positrons...
Annihilation! Cool Flying Dudes! And other stories from the world of science . . .
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The Dark Era begins when space is dominated by tiny particles such as photons, electrons and positrons.
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One imaging technique, positron emission tomography (PET) with the imaging agent fluorodeoxyglucose (FDG), may provide doctors with the information they need to make more informed treatment decisions, according to research published in the April issue of The Journal of Nuclear Medicine
PhysOrg.com - latest science and technology news stories
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For Z Zcr, if the innermost orbital is not filled, the electric field of the nucleus will pull an electron out of the vacuum, resulting in the spontaneous emission of a positron.
MIND MELD: The Best Spaceships in Written Science Fiction
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It is necessary to investigate the relationship between each muscle stiffness and brain activities by electroencephalogram, positron emission tomography, and so on.
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Derec shuddered at the idea of untrained people teasing through the tatters of a positronic brain.
Mirage
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We've also requisitioned every watt of power within the city to power the positron cannon.
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When a positron encounters an electron, the two annihilate each other and are converted to two gamma rays, which can easily be detected and localized in the brain.
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The actual detection was thus only that of an electron (positron) and an antimuon (muon), i.e., two different leptons with opposite charges, which apparently violates the law of lepton number conservation.
Additional background material on the Nobel Prize in Physics 1995
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With the advice and consent of the robot brain itself, the positronicomputer had been reprogrammed by Rhodan so that such undesirous actions as had happened in the past would never be repeated.
The Venus Trap
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It was the antiparticle to the electron, later called the positron.
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Positively charged beta particles, the antiparticle of electrons, are called positrons.
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Scatter coincident events are the important factor that affects the quality of positron emission tomography ( PET ) images.
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Referring to the so-called positron, the positive particle regarded as the polar opposite of the negative electron, he remarks: 'A positron is a hole from which an electron has been removed; it is a bung-hole which would be evened up with its surroundings if an electron were inserted. ...
Man or Matter
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Rifle stocks, made for use with iron sights, were little help in establishing a constant head positron.
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Scatter coincident events are the important factor that affects the quality of positron emission tomography ( PET ) images.
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The number of times that an antimuon emits a positron in the same direction as its polarization was found to be equal to the number of times that a muon emits an electron in the opposite direction.
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What we see on our teevees now is a reanimated corpse, powered by some kind of positronic brain programmed solely for evil.
Think Progress » Rumsfeld: War Critics Being Manipulated By Zarqawi and Bin Laden’s ‘Media Committees’
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Positron emission tomography ( PET ) is an imaging technique that combines a radioactive tracer with a molecule.
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The positron is slowed down by the water and destroyed together with an electron (matter meets antimatter), whereupon two photons (light particles) are created.
Press Release: The 1995 Nobel Prize in Physics
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The nuclide can then be detected using existing photon or positron emission tomography methods.
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The stability of up - quenched Cu - 25 . 0 Zn - 4.20 Al ( wt . % ) alloy has been studied by positron annihilation and X - ray diffraction.
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Soon, we produced antiprotons in accelerators and finally, in 1995, we combined a positron with an antiproton to produce an antimatter atom.
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These new tests are resonance imaging ( MRI ) and positron emission tomography ( PET ) scanning of the heart.
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Antimatter is matter composed of antiparticles, such as positrons, antineutrons and antiprotons.
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But the gluons are unlike the carrier particles of the electromagnetic force which appeared along with the virtual electrons and positrons.
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Antimatter also exists and so there is an antiproton, an antineutron and an antielectron often called the positron.
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Positron emission tomography ( PET ) is an imaging technique that combines a radioactive tracer with a molecule.
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A positron is the antimatter equivalent of an electron, and perhaps the easiest anti-particle to manufacture and store.
Wired Top Stories
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The paper shows that positrons can see defects better than either optical or electron beam microscopes.
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The resulting electric field would create a plasma of electrons and positrons from among the virtual particles surrounding the star.
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These probabilities agree very well with measured data (e – = electron, e+ = positron, q = quark, q with overscore = antiquark, g = gluon).
The Nobel Prize in Physics 2004 - Information for the Public
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These new tests are resonance imaging ( MRI ) and positron emission tomography ( PET ) scanning of the heart.
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This is a partial list of radionuclides that decay by positron emission and have been used in biomedical imaging studies.
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PET (positron emission tomography) imaging conducted while subjects listened to consonant or dissonant chords showed that different localized brain regions were involved in the emotional reactions.
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An important proof of the QCD theory is provided by the collisions between electrons and their antiparticles, positrons, with very high kinetic energy, when they annihilate each other.
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The technologies of radionuclide section imaging tomograph included single photon emission computed of tomograph (SPECT) and positron emission computed tomograph (PET).
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One of the unique properties of positrons is that as soon as they make contact with electrons they annihilate to produce gamma rays.
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Motta's research interests include the behavior of nuclear reactor materials under irradiation; phase transformations; corrosion; mechanical behavior of materials; materials characterization using transmission electron microscopy, positron annihilation spectroscopy and synchrotron radiation; and zirconium alloys, intermetallic compounds and steels.
Penn State Live
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Positron emission tomography ( PET ) is a non - invasive method to detect the distribution of radionuclide in vivo.
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So the normally stable proton can decay into a neutron, a positron, and a neutrino if continuously fed enough energy through constant, extreme acceleration.
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The emission of the electron's antiparticle, the positron, is also called beta decay.
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Positron emission tomography ( PET ) is a non - invasive method to detect the distribution of radionuclide in vivo.
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You can read more about Positron by viewing the Positron Company Profile.
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The full scattering amplitude is the sum of all contributions from all possible loops of photons, electrons, positrons, and other available particles.
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The antiparticle of the electron is the positron; there are also antiquarks and antineutrinos.
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Molecular imaging with positron emission tomography ( PET ) is an important field of molecular imaging.
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The term accelerators most commonly refers to particle accelerators, devices for increasing the velocity of subatomic particles such as protons, electrons, and positrons.
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The idea is that small kinetic mixing of the ordinary and mirror photons may exist which would mix ordinary and mirror ortho positronium, leading to maximal ortho positronium - mirror orthopositronium oscillations.
Our First Guest Blogger - Lawrence Krauss
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(or positron) and an antimuon (or muon) with the opposite sign on its charges were detected.
Press Release: The 1995 Nobel Prize in Physics
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There is both matter (such as electrons) and oppositely charged antimatter (such as positrons).
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A team including David Cassidy--- who will be played in the movie by David Cassidy--- has succeeded in merging di-positronium with ordinary positrons in order to produce a powerful ray called the gamma-ray annihilation laser!
Archive 2007-09-01
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Each small black loop represents a photon creating an electron and a positron, which then annihilate one another and produce a photon, in what is called a virtual process.
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The electron - positron pair may survive without recombining.
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Solar neutrinos are produced when two protons fuse together to form a deuterium nucleus, a positron, and a neutrino.
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Clinical and quantitative fluorodeoxyglucose positron emission tomography in pre - and symptomatic persons inheriting familial Alzheimer's disease mutations
PRWeb - Daily News Feed
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(In normal hydrogen atom an electron is bound to a proton, but in antihydrogen atom an antielectron (positron) is bound to an antiproton.)
Santhosh Mathew, PhD: Seeking the Lost Seeds of Big Bang
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Positronic brains had the standard Three Laws of Robotics burned into them, not once, but millions of times, each microcopy of the Laws standing guard to prevent any violation.
Roger MacBride
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Objective : To discuss the nursing countermeasure for receiving high quality Positron Emission Tomography ( PET ) image.
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To probe the electroweak force, future experiments will collide beams of high-energy electrons with those of positrons.
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The 2 mm thick acrylic boards served as ‘positron shields’ to improve detection sensitivity.
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Daneel Olivaw, a humaniform positronic robot beholden by the all-important Three Laws of Robotics.
Archive 2010-04-01
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(In normal hydrogen atom an electron is bound to a proton, but in antihydrogen atom an antielectron (positron) is bound to an antiproton.)
Santhosh Mathew, PhD: Seeking the Lost Seeds of Big Bang
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How few cancer cells can be detected positron emission tomography?
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The first anti-matter particle discovered was the positron, which has a mass similar to an electron but with a positive charge.
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One can imagine atoms that are made of antiparticles: antiprotons, antineutrons, and positrons.
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Electrons and positrons collide at unequal energies inside a sophisticated, 1,200-ton particle detector called BABAR, creating millions of short-lived subatomic particles know as B mesons.
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If the nucleus of the an atom has too few neutrons to be stable, however, positron emission occurs.
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Positrons, antiprotons and other antiparticles can be routinely created at particle accelerator labs and can even be trapped and stored for days or weeks at a time.
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Anderson discovered that the collision of an electron and a positron resulted in the annihilation of both particles, with their mass being converted into energy.
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I'm throwing in my dice with BEC molecular positronium for the gamma laser.
The Gamma Laser
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It is important too, for use in high-luminosity linear electron - positron colliders where the focus is extremely tight, to know whether or not detectors can separate collision results from background radiation.
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In the largest study to date to evaluate fluorodeoxyglucose positron emission tomography combined with computed tomography (FDG-PET / CT) in the initial staging of inflammatory breast cancer (IBC), researchers were able to identify the precise location and extent of metastasis
Health News from Medical News Today
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The simplest antiatom, antihydrogen, is made of an antiproton and a positron, the electron's antimatter counterpart.
New Scientist - Online News
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Tomography (PET), the positron annihilates with electrons of the tissue and the produced two photons, recorded in detectors, give information on the origin of the carbon-11 nuclide.
Accelerators and Nobel Laureates
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But stabilize the matter-antimatter mix into a substance called positronium — as a couple of UC Riverside physicists did for a record-breaking 100 nanoseconds — and you're on your way to turning that jolt into a focused, ultrapowerful laser.
WTF?! The Positronium Superlaser Is Almost Complete. Muh-ha-ha-ha!
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The first indication of a possible new phenomenon was that the research team observed 24 events of the type electron + positron - electron + antimuon + i.p. or electron + positron - positron + muon + i.p. where i.p. stands for invisible particles; those that left no trace in the detector.
Press Release: The 1995 Nobel Prize in Physics
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The anti-particle of a negatively charged electron, for example, has a positive charge and is called a positron.
I’m Working on That
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About eight times the mass of a proton, the zeta particle was created when electrons and positrons collided at about 10 Gev (gigavolts of energy), where it appeared among the decay products of the upsilon particle.
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Feb 02, 2009 | not rated yet | no comments yet In the largest study to date to evaluate fluorodeoxyglucose positron emission tomography combined with computed tomography
PhysOrg.com - latest science and technology news stories
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The decaying atoms emit positrons, which encounter electrons and are annihilated, releasing pairs of gamma rays.
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When people are suffering with major depression, research has shown that a type of nuclear medicine scan called positron emission tomography PET can often reveal specific regions of their brains with decreased metabolic activity—a reduced flow of chemical messengers between nerve cells.
The 7
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The Harvard group use positron emission tomography ( PET ) scans to monitor the brain activity.
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The characteristics of positronium, a kind of exotic atoms, and the applicability of using it to probe the reaction mechanism and the active intermediates are briefly introduced.
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The prefix anti is appropriate because an electron and a positron can annihilate each other, disappearing in a burst of energy.
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Antihydrogen is identical, except that it has a negatively charged proton, called an antiproton, and a positively charged electron, called a positron.
The Globe and Mail - Home RSS feed
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Electrons, positrons, and photons can be separated and isolated at macroscopic distances.
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Here, there would be such a huge number of electrons and positrons created that the radiation would be trapped, except for a thin layer at the outer edge of the gas.
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A photon can temporarily become an electron and positron which quickly annihilate one another to reform the original photon.
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Molecular imaging with positron emission tomography ( PET ) is an important field of molecular imaging.
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But stabilize the matter-antimatter mix into a substance called positronium — as a couple of UC Riverside physicists did for a record-breaking 100 nanoseconds — and you're on your way to turning that jolt into a focused, ultrapowerful laser.
WTF?! The Positronium Superlaser Is Almost Complete. Muh-ha-ha-ha!
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Main Outcome Measures We used positron emission tomography and fluorodeoxyglucose 18 to examine resting regional cerebral metabolic rate for glucose (rCMRglu).
Archives of General Psychiatry current issue
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And face it--- doesn't "di-positronium" sound like something out of a bad science fiction film?
Archive 2007-09-01
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This method uses positrons, elementary particles with the mass of an electron but a positive charge.
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This uses a radioactive drug, 18F-DOPA, that is injected intravenously and concentrates in insulin cells for detection in a PET scanner (positron emission tomography).
Diagnosis
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The Harvard group use positron emission tomography ( PET ) scans to monitor the brain activity.
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He pressed a series of controls and fired his only projectile weapon, a positron grenade, directly behind him.
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We are now working to accumulate trillions of positrons or more in a novel 'multicell' trap - an array of magnetic bottles akin to a hotel with many rooms, with each room containing tens of billions of antiparticles," Surko said in a statement.
Yahoo! News: Business - Opinion
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Positron emission tomography ( PET ) is a non - invasive method to detect the distribution of radionuclide in vivo.
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Colonography comb in ining the imaging procedures of positron emission tomography (PET) and computed tomography (CT) provides whole-body tumor staging in as ingle session.
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Antimatter is matter composed of antiparticles, such as positrons, antineutrons and antiprotons.
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Objective : To discuss the nursing countermeasure for receiving high quality Positron Emission Tomography ( PET ) image.
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The quality of the LM soap film crystal is determined by means of the positron annihilation life spectroscopy.
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He retrieved a spare optronic cable from his equipment pack and patched one end into his positronic matrix.
A Time to Kill
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One can imagine atoms that are made of antiparticles: antiprotons, antineutrons, and positrons.
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This uses a radioactive drug, 18F-DOPA, that is injected intravenously and concentrates in insulin cells for detection in a PET scanner (positron emission tomography).
Diagnosis
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Studies of electrophysiological positron emission tomography and patients have provided important evidence supporting this viewpoint.
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But these were expected to decay very rapidly and the observed electrons and muons were therefore interpreted as products of decay from reactions: tau - electron (or muon) + neutrinos antitau - antimuon (or positron) + neutrinos
Press Release: The 1995 Nobel Prize in Physics
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The AEBB-2000 accelerator is a unique facility for carrying out experiments with anti-parallel electron-positron beams of high energies.
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Scatter coincident events are the important factor that affects the quality of positron emission tomography ( PET ) images.
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The poster titled "Clinical and quantitative fluorodeoxyglucose positron emission tomography in pre - and symptomatic persons inheriting familial Alzheimer's disease mutations," will be presented on Monday, Jul 12, at 11: 30 AM - 1: 00 PM (HST).
PRWeb - Daily News Feed
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Four years later Dirac's positron was also found in a cosmic ray shower and in 1933 Dirac was awarded the Nobel Prize in Physics for his extension of atomic theory.
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So the normally stable proton can decay into a neutron, a positron, and a neutrino if continuously fed enough energy through constant, extreme acceleration.
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The transistorized gravity-strain amplifier derives power from the gravitational field manipulation of positrons.
