Results 251 to 260 of about 6,196,296 (298)
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High-Sensitivity Antitumor Drug Sensitivity Testing
Oncology, 1994For antitumor drug sensitivity testing we have been performing the succinic dehydrogenase inhibition test using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT). A new tetrazolium salt 2,3-bis(2-methoxy-4-nitro-5-sulfophenyl)-5-[(phenyl-amino) carbonyl]-2H-tetrazolium hydroxide (XTT) has been synthesized recently, and we have been ...
T, Kondo +4 more
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High-sensitivity autoionography
Journal of Physics E: Scientific Instruments, 1978Ionography can replace conventional film autoradiography in the detection of radioactive spots on thin-layer chromatograms. The sensitivity of autoionography has been greatly increased by the use of thick charge receptors instead of the thin imaging foils used hitherto, and also, for some radionuclides, by the use of higher gas pressure.
R J Barish, J W Boag
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Physics Today, 1949
Wartime developments in radar have made available equipment for producing and detecting short radio waves of a few millimeters to centimeters in length so that it is now convenient and easy to study the absorption of various substances, particularly gases, in this region of the electromagnetic spectrum.
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Wartime developments in radar have made available equipment for producing and detecting short radio waves of a few millimeters to centimeters in length so that it is now convenient and easy to study the absorption of various substances, particularly gases, in this region of the electromagnetic spectrum.
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High-Frequency Sensitivity in Infants
Science, 1980Auditory thresholds were determined for infants and adults to half-octave bands of noise centered at 10,000 and 19,000 hertz. Adults were significantly more sensitive than infants at 10,000 hertz, but at 19,000 hertz, adults and infants had comparable thresholds.
B, Schneider, S E, Trehub, D, Bull
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High-sensitivity surface-photoacoustic spectroscopy
Optics Letters, 1990The sensitivity of surface-acoustic-wave detection is extended by several orders of magnitude to a surface-specific absorbance of alphal ~ 10(-9) for a power density of 1 GW/cm(2) using a narrow-bandwidth interdigitated surface-acousticwave detector and an optical irradiation pattern to provide a matched acoustic signal. Major advantages include narrow-
M Y, Raja +4 more
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High-sensitivity fiber-optic accelerometer
Optics Letters, 1989We describe a novel accelerometer in which the sensing element is a weighted diaphragm. The displacement of the diaphragm produced by acceleration is measured using a miniature hemispherical air-spaced Fabry-Perot interferometer, of which one mirror is mounted on the diaphragm.
A S, Gerges +3 more
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Astronomische Nachrichten, 2003
AbstractOver the last decade spectro‐polarimetry evolved to ever higher sensitivity levels. New techniques and instruments allow us to address weak polarization signals, which are caused by scattering in the solar atmosphere. In this paper a review on the development of spectro‐polarimetric investigations of scattering physics and its coupling to the ...
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AbstractOver the last decade spectro‐polarimetry evolved to ever higher sensitivity levels. New techniques and instruments allow us to address weak polarization signals, which are caused by scattering in the solar atmosphere. In this paper a review on the development of spectro‐polarimetric investigations of scattering physics and its coupling to the ...
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High-sensitivity roll-angle interferometer
Optics Letters, 2013A roll-angle interferometer with high sensitivity is presented in this Letter. Two sets of centrosymmetric beams are used to travel through the measurement and reference arms of the roll-angle interferometer, which contains two specific optical devices: wedge prism assembly and wedge mirror assembly.
Yanfen, Le +3 more
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High sensitivity Fourier-transform rheology
Rheologica Acta, 1999The application of oscillatory shear strain leads, in the non-linear regime, to the appearance of higher harmonic contributions in the shear stress response. These contributions can be analyzed as spectra in Fourier space with respect to their frequencies, amplitudes and phase angles.
Wilhelm, M. +2 more
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High-Sensitivity NMR Probe Systems
2008Item does not contain ...
Bentum, P.J.M. van, Kentgens, A.P.M.
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