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Now showing items 711-720 of 767
Metabolism and activity of the spanish fringe-toed lizard (Lacertidae: acanthodactylus erythrurus)
(Elsevier: Journal of Thermal Biology, 1978-10)
1.In the field, adult fringe-toed lizards (Acanthodactylus erythrusus) had a mean body temperature of 38.8 ± 0.2 (S.E.) °C while subadults maintained a significantly lowr temperature (x average = 35.4 +/- 0.5 degrees ...
Comparison of the electronic transitions of unconjugated thiones and imines: an exercise in the application of symmetry selection rules
(The American Chemical Society: Journal of Chemical Education, 1978-08)
The purpose of this paper is to show how symmetry selection rules can be used to determine whether certain of the electronic transitions exhibited by the title compounds are allowed or forbidden by symmetry.
Isomerization of the predicted beta-D-fructose 6-phosphate
(Elsevier: Archives of Biochemistry and Biophysics, 1978-07)
Phosphomannose isomerase (D-mannose 6-phosphate ketol-isomerase) (EC 5.3.1.8) has been shown to use the predicted beta-D-fructose 6-phosphate as substrate. The fate of alpha-D-fructose 6-phosphate is not determined by these ...
5-Bromodeoxyuridine does not affect development of the sea urchin, Arbacia punctulata
(Elsevier: Experimental Cell Research, 1978-06)
Development of Arbacia punctulata embryos in the presence of bromodeoxyuridine (BUdR) was investigated under conditions which allowed about 20% substitution of BUdR for thymidine residues in DNA. Development was essentially ...
Poly(N-vinylcarbazole): A selective review of its polymerization, structure, properties, and electrical characteristics
(Wiley: Journal of Polymer Science: Macromolecular Reviews, 1978-05)
Heats of formation and bond dissociation energies of some simple sulfur- and halogen-containing molecules
(The American Chemical Society: Journal of Chemical and Engineering Data, 1978-04)
The heats of formation and bond dissoclation energies of some simple sulfur- and halogen-containing molecules are derived from information found in the literature. These thermochemical quantities are useful in determining ...
Effect of substituents on ring size in radical cyclizations. 1. Methyl vs. phenyl
(American Chemical Society: The Journal of Organic Chemistry, 1978-01-06)
A Test for "wrong-bond" rupture in the thermal structural isomerization of phenylcyclopropane and a confirmation of the two-center epimerization mechanism in its stereomutation
(The American Chemical Society (ACS), 1978)
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 ...
Physiological basis of habitat partitioning in Jamaican Eleutherodactylus
(Springer: Oecologia, 1977-12)
Rate of evaporation, resistance to drying, temperature selection, and critical thermal maximum were measured for Jamaican Eleutherodactylus acclimated to 20° C and a 12:12 L:D photoperiod. Two introduced species, E. ...