Search
Now showing items 21-30 of 58
Phosphorus-31 nuclear magnetic resonance studies of actinomycin D, ethidium bromide, and 9-aminoacridine complexes with dinucleotides
(The American Chemical Society: Biochemistry, 1977-06-28)
Phosphorus-3 1 nuclear magnetic resonance spectra of actinomycin D, ethidium bromide, and 9-aminoacridine complexes with deoxydinucleotides and ribodinucleoside monophosphates are reported. In the 2:1 pdGpdCactinomycin D ...
Acid precipitation and reproductive success of ambystoma salamanders
(Springer: Water, Air and Soil Pollution, 1977-03)
: The two species of mole salamander that occur in the Ithaca, New York, region (Ambystoma maculatum and A. jeffersonianum) breed in temporary ponds that are formed by accumulation of melted snow and spring rains. Water ...
Defective excision and postreplication repair of UV-damaged DNA in a recL mutant strain of E. coli K-12
(Springer: Molecular and General Genetics, 1977-01)
The mutation recL152 leads to a reduction of excision repair as measured by an increase in the time required to close uvrA uvrB dependent incision breaks, and by a reduction of host cell reactivation ability. Postreplication ...
Ontogenetic change in blood oxygen capacity and maximum activity in garter snakes (Thamnophis sirtalis)
(Springer: Journal of Comparative Physiology B: Biochemical, Systemic, and Environmental Physiology, 1977-01)
There is an ontogenetic increase in the time that garter snakes (Thamnophis s. sirtalis) can maintain maximum activity at 25°C. Newborn snakes are exhausted by 3–5 min of activity while adults can be active for 20–25 min. ...
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 ...
Necessary conditions for a semigroup ring to be an integral CRM-ring with identity
(Springer New York, 1976-12)
The immersion of semigroup rings into division rings gave rise to Tamari's [6] hierarchical classification of semigroups. Some basic properties of this classification were given elsewhere ([1] , [2] and [3]), pointing out ...
Voltammetric behavior of poly(vinylferrocene)
(Wiley: Journal of Polymer Science: Polymer Chemistry Edition, 1976-10)
A voltammetric analysis of the electron-transfer process in poly(vinylferrocene) (PVF) has been carried out; the results indicate that the electrochemical behavior of ferrocene and PVF are quite similar. The field effects ...
Evidence for sequence preferences in the intercalative binding of ethidium bromide to dinucleoside monophosphates
(Elsevier: Journal of Molecular Biology, 1976-09-16)
The formation of solution complexes of ethidium bromide with the self-complementary ribodinucleoside monophosphates, as well as ethidium complexes with mixtures of complementary and non-complementary ribodinucleoside ...
Acid precipitation and embryonic mortality of spotted salamanders, Ambystoma maculatum
(American Association for the Advancement of Science: Science, 1976-04-02)
Spotted salamanders breed in temporary pools formed in early spring by melted snow and rain. Many of these pools reflect the low pH of precipitation in the northeastern United States. Egg mortality is low (less than 1 ...
The role of fatigue in temperature resistance of salamanders
(Elsevier: Journal of Thermal Biology, 1976-04)
1. We measured temperature resistance and lactic acid production of Notophthalmus viridescens and Plethodon cinerus acclimated to 10, 20 or 30°C.
2. Fatigue is responsible for the Loss of Righting Response (LRR) observed ...