Results 171 to 180 of about 207,424 (215)

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 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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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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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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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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Differential effect of cyclooxygenase inhibitors on absorptive hyperemia

American Journal of Physiology-Heart and Circulatory Physiology, 1985
To test whether the hydrolytic products of digestion could stimulate vasoactive prostaglandin synthesis in the intestine, the muscularis and mucosa of the rat jejunum were suffused with a bicarbonate-buffered Ringer vehicle containing cyclooxygenase inhibitors (meclofenamate or indomethacin; 3 X 10(-5) M).
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Differential Absorption of Purine Nucleotides, Nucleosides and Bases

1980
Substantial contributions to our knowledge of purine metabolism and the origin and elimination of uric acid, have been made from studies in man and animals. Studies early in the century1 established that the body could be sustained on a diet free of purine (endogenous metabolism) and the role of dietary (exogenous) purine in the aetiology of the gouty ...
C F, Potter, A, Cadenhead, H A, Simmonds, J S, Cameron   +3 more
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DIFFERENTIAL ABSORPTION OF PLANT STEROLS IN THE DOG

Canadian Journal of Biochemistry and Physiology, 1962
Eight adult female dogs (8 to 10 kg) with thoracic duct fistula were fed 5 to 10% solutions of mixed plant sterols in oleic acid, corn oil, or butter. The lymph, which flowed at a rate of 20 to 50 ml per hour, was drained for 18 to 26 hours. Each 2-hour collection was analyzed separately for cholesterol and plant sterols.
A. Kuksis, T. C. Huang
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Differential and Additive Absorption Spectrometry

1966
In conventional quantitative determinations of absorption spectra, two cuvettes are used. One, the ‘sample’ cuvette, contains a solution; the other, the ‘blank’ or ‘reference’ cuvette, contains the uncontaminated solvent. The blank compensates for any slight light absorption by the solvent, which has been made as transparent as possible, at least in ...
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Expression of Digestive and Absorptive Function in Differentiating Enterocytes

Annual Review of Physiology, 1985
The intestinal epithelium is a labile tissue capable of changing its properties rapidly in response to alterations in its immediate environment. These changes have been classified recently according to whether they take place in a con­ tinuous or discontinuous manner.
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