Results 261 to 270 of about 213,817 (308)

Differential absorption of the heme and globin moieties of hemoglobin

The American Journal of Digestive Diseases, 1967
Studies were performed in 4 healthy men to determine the intestinal absorption and fecal excretion of the heme and the protein moieties of hemoglobin when hemoglobin was given orally in large amounts. The relatively higher absorption of the protein moiety of hemoglobin was confirmed by a proportionate increase in urinary nitrogen.
K, Tripathy, F T, García, L G, Mayoral, S, Klahr, J, Ghitis   +4 more
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Differential absorption lidar sensing of ozone

Proceedings of the IEEE, 1989
The differential absorption lidar (DIAL) technique for deriving O/sub 3/ profiles from lidar measurements is discussed. The US National Aeronautics and Space Administration's airborne DIAL system is described, and examples of a broad range of O/sub 3/ and aerosol measurements are presented from a number of field experiments.
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Analytical differentiation of the differential-absorption-lidar data distorted by noise

Applied Optics, 2002
A method of analytical differentiation is developed for processing differential absorption lidar (DIAL) data. The method is based on simple analytical transformation of the DIAL on and off signal ratio. The derivatives consequently are found for either individual data points or local zones of the measurement range.
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Elemental analysis using differential absorption techniques

Biological Trace Element Research, 1987
X-ray differential absorption microanalysis is presented as a technique for trace element analysis of hydrated biological specimens of about 0.1-5 μm thickness. For the study of the light elements (Z≲20), the absorption technique minimizes the radiation dose and, thus, damage to such specimens when compared with X-ray fluorescence.
H, Rarback, F, Cinotti, C, Jacobsen, J M, Kenney, J, Kirz, R, Rosser   +5 more
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Coherent differential absorption lidar measurements of CO_2

Applied Optics, 2004
A differential absorption lidar has been built to measure CO2 concentration in the atmosphere. The transmitter is a pulsed single-frequency Ho:Tm:YLF laser at a 2.05-microm wavelength. A coherent heterodyne receiver was used to achieve sensitive detection, with the additional capability for wind profiling by a Doppler technique.
Grady J, Koch, Bruce W, Barnes, Mulugeta, Petros, Jeffrey Y, Beyon, Farzin, Amzajerdian, Jirong, Yu, Richard E, Davis, Syed, Ismail, Stephanie, Vay, Michael J, Kavaya, Upendra N, Singh   +10 more
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Differential absorption displacement transducer

Journal of Physics E: Scientific Instruments, 1985
The operation of a differential absorption displacement transducer based on the optical wedge principle has been successfully demonstrated. The displacement sensitivity of the transducer can be selected anywhere in the range of 0 to 10.35 dB mm-1 by the proper choice of the wavelength.
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Airborne Differential Absorption Lidar

SPIE Proceedings, 1988
Airborne differential absorption lidarPeter RichterTechnical University Budapest, Department of Atomic Physics1521 Budapest, Budafoki ut 8. HungaryABSTRACTThe optical setup of an airborne differential absorption lidar based on optical heterody-ne detection of topographic backscattering of CW tunable CO2 lasers will be shown.
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Ozone differential absorption lidar algorithm intercomparison

Applied Optics, 1999
An intercomparison of ozone differential absorption lidar algorithms was performed in 1996 within the framework of the Network for the Detection of Stratospheric Changes (NDSC) lidar working group. The objective of this research was mainly to test the differentiating techniques used by the various lidar teams involved in the NDSC for the calculation of
Godin, Sophie, Carswell, Allen I., Donovan, David P., Claude, Hans, Steinbrecht, Wolfgang, Mcdermid, I. Stuart, Mcgee, Thomas J., Gross, Michael R., Nakane, Hideaki, Swart, Daan P. J., Bergwerff, Hans B., Uchino, Osamu, Gathen, Peter von Der, Neuber, Roland   +13 more
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Differential absorption of varnish by paper

Journal of Colloid Science, 1963
Abstract Single and mixed linseed oil varnishes and resin varnishes have been compared for their behavior in absorption by paper, first under an applied pressure and then in the absence of any external pressure. In general, these varnishes obey Darcy's law of fluid flow.
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Comparative lymphatic absorption of sitosterol, stigmasterol, and fucosterol and differential inhibition of cholesterol absorption

The American Journal of Clinical Nutrition, 1983
Studies have been conducted on the lymphatic absorption of sitosterol (24 alpha-ethyl cholesterol), stigmasterol (delta 22, 24 alpha-ethyl cholesterol), and fucosterol (24-ethylidine cholesterol) when administered intragastrically to rats. In addition, the effect of each sterol on absorption of endogenous cholesterol has been assessed by including ...
G V, Vahouny, W E, Connor, S, Subramaniam, D S, Lin, L L, Gallo   +4 more
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