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Showing 1 to 20 of 712 for “"Quenching"”.
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Nonlinear Luminescence Quenching in Eu2O3
Nonlinear luminescence quenching has been documented in numerous systems such as organic crystals, rare earth insulators, laser materials, semiconductors, and phosphors. In each of these systems nonlinear luminescence quenching occurs under conditions of high excitation density from interactions …
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Determination of chlorine by fluorescence quenching
… determination of chlorine species. Fluorescence quenching to determine chlorine is a promising method because of its high sensitivity and selectivity. This study focuses on development of a sulfonamide-based collection system for low levels of chlorine in air. Quantitation of chlorine is based on …
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Flame Quenching Limits of Hydrogen Leaks
This study examines flame quenching limits of hydrogen leaks in compression fittings and tube burners. Experimental work is presented. Measurements included ignition limits for leaking compression fittings on tubes of 3.16-12.66 mm in diameter and the ignition and quenching limits of tube burners …
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Constraining the Quenching Mechanisms in Galaxies
… of which mechanism is the most important for quenching galaxies. The goal of this thesis is to study galaxy quenching from an observational perspective and to address the following question: why do galaxies stop forming stars? In the first part of this thesis I examine the relationship between …
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Quenching normal Bose gases to Unitarity
The presence of inter-particle interactions in a system elevates the physics involved from fundamentally single-body, with each particle following its own trajectory according to external forces, to many-body, with collective behaviour emerging from the interplay between the multitude of particles. …
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The quenching characteristics of sodium polyacrylate solutions.
The quenching characteristics of a range of concentrations of sodium polyacrylate, a commercially available polymer quenchant, have been studied. These solutions showed a stable film boiling stage the duration of which increased with increasing concentration. The maximum surface heat transfer …
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Quenching Lattice Vacancies in High Purity Gold
Made available in DSpace on 2015-05-12T17:11:56Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 0013506.PDF: 1382647 bytes, checksum: e9775c647293e2abd31e787eb97a6ca9 (MD5) Previous issue date: 1955
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Intramolecular Stacking Interactions Determined by Fluorescence Quenching
Made available in DSpace on 2014-12-13T20:09:52Z (GMT). No. of bitstreams: 1 7624093.pdf: 4061431 bytes, checksum: d0f51b1ad5ca0aecde8c3446dfc14c3a (MD5) Previous issue date: 1976
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Magnetic quenching of positronium in n-pentane
Submitted by William Weathers (weathrs2@illinois.edu) on 2012-03-21T17:01:25Z No. of bitstreams: 1 1971_henkin.pdf: 944651 bytes, checksum: 1bd22d9c5a5158c1b37c728fc95b998f (MD5)
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The computer simulation of quenching in superconducting magnets
The term 'quenching' describes the reversion of an operating superconducting magnet to its normally resistive state. This involves change the conversion of stored magnetic energy to heat. It is usually accompanied by the generation of high temperatures, voltages and stresses, because of the large …
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Disturbance reduction in nonlinear systems via adaptive quenching
An indirect adaptive quenching algorithm for a nonlinear single-degree-of-freedom system with unknown constant system parameters is presented. The system is subject to external or parametric sinusoidal disturbances and the resulting control signal is also sinusoidal. The quenching algorithm …
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3D Scintillator Detector Quenching Characterization For Scanning Proton Beams
… of the incident radiation, termed ionization quenching. For protons and other heavy charged particles, the ionization density, which is quantified as the linear energy transfer (LET), varies as a function of depth. Therefore, quenching introduces a non-linear response to the absorbed dose of …
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Electric field quenching of single-walled carbon nanotube photoluminescence
… cosine of the electric field, with a single quenching parameter k. It was shown that the effect was induced by the electric field parallel to SWNT axis while the perpendicular component did not produce detectable quenching. The quenching process was found to be enhanced for long nanotubes. …
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Fluorescence Studies of Photosystem II Fluorescence Quenching During Desiccation
… In hydrated conditions nonphotochemical quenching (NPQ) mechanisms are able to safely dissipate excess excitation energy as heat, but mechanisms of NPQ associated with desiccation tolerance are still largely unclear. In the lichen Parmelia sulcata, photosystem protection has been …
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The Quenching Method of Determining Boiling Curves on Spheres
… on the pool boiling curves determined by the quenching method using spheres. The effects of sphere diameter, sphere metal and the test liquid used, were studied. Tests were also carried out to determine whether local angular variations in the boiling curve exist on a sphere.
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Quenching and annealing of lattice vacancies in pure lead
Lead (99.9999% pure by weight) wires were quenched.in a low temperature (s35 K), low-pressure (10-100 bars absolute) helium atmosphere. Initial quench rates were between 1 and 3X10 4 °C/sec. The formation energy for a lattice vacancy was determined to be 0.54+0.02 eV and the resistivity for one …
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The effect of interrupted quenching on the pearlite transformation.
Massachusetts Institute of Technology. Dept. of Metallurgy and Materials Science. Thesis. 1973. Ph.D.
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Synthesis of highly quenching fullerene derivatives for biosensor applications
… whether or not there was an enhancement in the quenching as compared with the Stern-Volmer data. Third, the use of the biotin-streptavidin system to determine how well the fullerene derivatives would perform in a biosensor system is discussed.
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Application of Optical Fiber Sensors for Quenching Temperature Measurement
… of fiber optics, it is possible to measure the quenching temperature to a much higher degree of precision. Optical fiber sensors are capable of taking many more measurements along a fuel simulator length than thermocouples, which are restricted to discrete points. In this way, optical fibers can …
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