Results 281 to 290 of about 2,156,419 (333)
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Electrical Engineering, 1934
The amplification obtainable in a vacuum tube amplifier is limited by the noise in the circuit. Of the various sources of noise the most fundamental and inevitable is thermal agitation of electricity. Other sources are the influence of ions and of shot effect and flicker effect on the current in vacuum tubes, poor contacts, mechanical vibration, and ...
J. B. Johnson, F. B. Llewellyn
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The amplification obtainable in a vacuum tube amplifier is limited by the noise in the circuit. Of the various sources of noise the most fundamental and inevitable is thermal agitation of electricity. Other sources are the influence of ions and of shot effect and flicker effect on the current in vacuum tubes, poor contacts, mechanical vibration, and ...
J. B. Johnson, F. B. Llewellyn
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Immunological Investigations, 1997
The polymerase chain reaction has become a mainstream tool for the molecular biologist. The sensitivity, efficiency, and speed of this method is unparalleled for the amplification and detection of exquisitely minute quantities of nucleic acids. Through repetitive cycles of heat denaturation of samples, followed by the base pairing of primers designed ...
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The polymerase chain reaction has become a mainstream tool for the molecular biologist. The sensitivity, efficiency, and speed of this method is unparalleled for the amplification and detection of exquisitely minute quantities of nucleic acids. Through repetitive cycles of heat denaturation of samples, followed by the base pairing of primers designed ...
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Critical Reviews in Biochemistry and Molecular Biology, 2007
Modern techniques are revealing that repetition of segments of the genome, called amplification or gene amplification, is very common. Amplification is found in all domains of life, and occurs under conditions where enhanced expression of the amplified genes is advantageous.
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Modern techniques are revealing that repetition of segments of the genome, called amplification or gene amplification, is very common. Amplification is found in all domains of life, and occurs under conditions where enhanced expression of the amplified genes is advantageous.
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Proceedings of the Society for Analytical Chemistry, 1968
Amplification methods were first used over 100 years ago but the term only came into general usage during the development of microanalytical techniques. There has been a revived interest in amplification methods during the last few years, for it has been realized that by their application to trace analysis, it is often possible to obtain unusally ...
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Amplification methods were first used over 100 years ago but the term only came into general usage during the development of microanalytical techniques. There has been a revived interest in amplification methods during the last few years, for it has been realized that by their application to trace analysis, it is often possible to obtain unusally ...
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Ramification amplification: A novel isothermal DNA amplification method
Molecular Diagnosis, 2001We have developed a novel isothermal DNA amplification method with an amplification mechanism quite different from conventional PCR. This method uses a specially designed circular probe (C-probe) in which the 3' and 5' ends are brought together in juxtaposition by hybridization to a target.
D Y, Zhang +3 more
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The Journal of the Acoustical Society of America, 2010
In this experiment the students will see a demonstration of how sound waves can be amplified. The setup of the experiment is simple: a tuning fork, a table, and a music box. First the tuning fork is struck by itself and the level of the sound emitted is noted. Then the tuning fork is struck again and held against a table. The amplification of the sound
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In this experiment the students will see a demonstration of how sound waves can be amplified. The setup of the experiment is simple: a tuning fork, a table, and a music box. First the tuning fork is struck by itself and the level of the sound emitted is noted. Then the tuning fork is struck again and held against a table. The amplification of the sound
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2011
AbstractThe all-encompassing goal of an effective rhetorical style was amplification. To amplify a point or line of argument meant to endow it with stylistic prominence and hence with conceptual importance in a text and salience in the minds of the audience. The rhetorical tradition offers two senses of amplification, first as heightening and second as
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AbstractThe all-encompassing goal of an effective rhetorical style was amplification. To amplify a point or line of argument meant to endow it with stylistic prominence and hence with conceptual importance in a text and salience in the minds of the audience. The rhetorical tradition offers two senses of amplification, first as heightening and second as
+4 more sources