Now showing items 11-20 of 4055
Salt excretion in a beach lizard (Ameiva quadrilineata, Teiidae)
(Springer: Journal of Comparative Physiology B: Biochemical, Systemic, and Environmental Physiology, 1976-01)
The teiid lizardAmeiva quadrilineata has a nasal salt gland that responds to NaCl loading by increasing excretion of Na+ (from 1.12 to 2.63 uM/100 gh), K+ (from 0.14 to 2.43 uM/100 gh), and Cl– (from 1.10 to 5.47 uM/100 ...
The dependence of postreplication repair on uvrB in a recF mutant of Escherichia coli K-12
(Springer: Molecular and General Genetics, 1977-01)
Summary Mutants carrying recF143 or recF144 show wild type levels of host cell reactivation of UV-irradiated lambda vir and wild type rates of excision gap closure in repairing UV damage to their own DNA. The same mutants ...
Inherent optical properties of the ocean: retrieval of the absorption coefficient of chromophoric dissolved organic matter from airborne laser spectral fluorescence measurements
(Optical Society of America, 1995-10)
The absorption coefficient of chromophoric dissolved organic matter (CDOM) at 355 nm has been retrieved from airborne laser-induced and water Raman-normalized CDOM fluorescence. Four combined airborne and ship field ...
Characterization of a large-format charge-coupled device
(International Society for Optical Engineering (SPIE), 1995-01)
Characterization of a Kodak KAF 4200 CCD chip, coated with the UV converter Lumigen, is described. This chip is very similar to a chip described by Ninkov, Backer, and Bretz [Proc. SPIE 1987, 14 (1 993)], except for the ...
Correction of thermal imagery for atmospheric effects using aircraft measurement and atmospheric modeling techniques
(Optical Society of America (OSA), 1986-08)
Airborne measurements of atmospheric-path transmission and atmospheric-path (upwelled) radiance in the 8-14-gm band were obtained by applying a multiple altitude and a dual-view angle calibration technique to thermal IR ...
Melanin deposits associated with the venom glands of snakes
(Wiley: Journal of Morphology, 1978-01)
Melanin deposits in the heads of both true vipers (Viperinae) and pit vipers (Crotalinae) are concentrated over the dorsal and dorsolateral aspects of the venom glands. This pigment may occur in any or all of six sites ...
Gas dynamics in the barred Seyfert galaxy NGC4151 - II. High resolution HI study
(Blackwell Publishing: Monthly Notices of the Royal Astronomical Society, 1999-04)
We present sensitive, high angular resolution (6′′ × 5′′) λ21-cm observations of the neutral hydrogen in the nearby barred Seyfert galaxy, NGC4151. These HI observations, obtained using the VLA in B-configuration, are the ...
Identity Mark Evaluation and Organization Project
Stereochemistry and mechanism of ionic cyclopropane ring cleavage by arenesulfenyl chloride addenda in quadricyclene systems
(The American Chemical Society: The Journal of Organic Chemistry, 1975-10-17)
Addition of benzenesulfenyl chloride to quadricyclenedicarboxylic acid (la) and to the corresponding dimethyl ester (1b) gave adducts [exo-5-chloro-endo-3-phenylthiotricyclo[18.104.22.168^2,6]heptane-2,exo-3-dicarboxylic acid ...