yi-dam
yi-dam (Tib.). A tutelary deity associated with
tantric Buddhism. The image and attributes of the deity are appropriated and used during personal meditation (
sādhana) for the purpose of transformation through self-identification. Examples of yi-dams include
Cakra-saṃvara,
Hayagrīva,
Heruka,
Mahākāla,
Vajrabhairava, and
Vajrayoginī, all of whom have a distinctive iconography and are the object of cultic practices such as rites of propitiation.
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Neutron Scattering Applied to Materials Problems
Magazine article from: JOM; 3/1/2006; ; 700+ words
; ...mechanical deformation. Neutrons are better able...compared to x-rays so neutron diffraction is used...applications of inelastic neutron scattering. By...change in energy, neutrons can probe the dynamics...is small-angle neutron scattering (SANS...length scales. For neutrons, ...
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Neutron Sources in North America: Present and Future
Magazine article from: JOM; 3/1/2006; ; 700+ words
; ...The Spallation Neutron Source (SNS) is...is due to deliver neutrons in 2006. When it...spacings and the neutron energy is comparable...lattice. These neutrons arc (hen useful...transfer from the neutron to the specimen...investigation compared with neutrons from a reactor...
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NEUTRON TRAPPING DEMONSTRATED FOR FIRST TIME AT NIST
Transcript from: Regulatory Intelligence Data; 1/5/2000; ; 700+ words
; ...took for the free neutrons to completely decay...other words, the neutron lifetime, has helped...almost two decades, neutrons have only been confined...difficulties are that the neutron, one of the basic...they decay. The neutrons, produced by the...NIST Center for Neutron Research ...
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Precision neutron polarimetry for neutron beta decay.
Magazine article from: Journal of Research of the National Institute of Standards and Technology; 5/1/2005; ; 700+ words
; ...pulsed cold neutrons from the SNS by transmitting the neutron beam through...by-pulse neutron spin reversal...the RFSF the neutrons are guided from...advantage that the neutron polarization...by the same neutrons that are also...
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The fundamental neutron physics beamline at the Spallation Neutron Source.
Magazine article from: Journal of Research of the National Institute of Standards and Technology; 5/1/2005; ; 700+ words
; ...beam of 0.89 nm neutrons for ultracold neutron (UCN) experiments...source; spallation neutron source. 1. Introduction Cold neutrons and ultracold neutrons...cold and ultracold neutrons. The Spallation Neutron Source (SNS) offers...
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Neutron Enterprises To Acquire Leading Stock Market Portfolio Simulations Company.
Business Wire; 11/30/2006; 700+ words
; ...and Entry Into Educational Market MONTREAL -- Neutron Enterprises Inc. ("Neutron") (OTCBB: NTRN) announced today that it has...000 middle and high school students each year. Neutron previously announced that it was working with...
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Cooling neutrons for research.(EMERGING TECHNOLOGIES: eureka)
Magazine article from: R & D; 11/1/2006; 700+ words
; ...designed to cool the reactor's neutron beams to -253[degrees...cryogenic system to cool the neutrons at HFIR. This is a huge step...the study of materials with neutron sciences," adds Beierschmitt...ILLUSTRATION OMITTED] Why use cold neutrons? Neutrons are vital to research...
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The fundamental neutron physics facilities at NIST.
Magazine article from: Journal of Research of the National Institute of Standards and Technology; 5/1/2005; ; 700+ words
; ...dedicated to studies of fundamental neutron interactions. The neutrons are provided by the NIST Center...facilities. Key words: cold neutrons; electroweak interactions; neutron interferometer; polarized neutrons; spin filters; ultracold neutrons...
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Neutron Enterprises Completes Acquisition of Stock-Trak, Inc.
Business Wire; 1/9/2007; 700+ words
; ...and Entry Into Educational Market MONTREAL -- Neutron Enterprises Inc. ("Neutron") (OTCBB: NTRN) announced today that it has...000 middle and high school students each year. Neutron previously announced that it was working with...
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Neutron scatter camera to ease detection of smuggled nuclear material
News Wire article from: The Hindustan Times; 11/25/2007; 700+ words
; ...thing," he says. The neutron scatter camera has an advantage over traditional neutron detection as it can differentiate low energy neutrons from high-energy neutrons...and the high-energy neutrons carry almost all of...concedes that the neutron scatter camera has certain...
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neutron
Book article from: The Columbia Encyclopedia, Sixth Edition
...radioactive; the extra neutrons convert to protons...In a nucleus the neutron can be stable...indicate that the neutron, like the proton...pions ; protons and neutrons are bound together...polarization of beams of neutrons. The formation...the techniques of neutron optics is known...
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neutron star
Book article from: A Dictionary of Astronomy
...greater the mass of a neutron star, the smaller its diameter. Neutron stars are believed to...interior of superfluid neutrons (i.e. neutrons behaving like a fluid...spinning, magnetized neutron stars. Massive X-ray...
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neutron—neutron sonde
Book article from: A Dictionary of Earth Sciences
neutron—neutron sonde A radioactive instrumental package for lowering down a borehole . It comprises a neutron source and detector. The number of neutrons backscattered to the detector is proportional to the...
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neutron moisture meter
Book article from: A Dictionary of Earth Sciences
neutron moisture meter ( neutron soil moisture probe...high-energy (fast) neutrons to detect indirectly...are moderated to slow neutrons by the hydrogen atoms...the density of the slow neutron backscatter, an indication...
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neutron log
Book article from: A Dictionary of Earth Sciences
neutron log The recording of neutron bombardment by a neutron—neutron sonde being raised through a borehole . The neutron log is used to estimate formation porosity and is presented on a scale calibrated in limestone porosity units.
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