Now showing items 11-20 of 83
Opposing actions of Ca++ and ATP plus Mg++ in controlling the kynurenine aminotransferase activity of isolated rat kidney mitochondria
(Elsevier, 1977-03-21)
A new method of monitoring changes in the permeability of the mitochondrial inner membrane to substrates, based on mitochondrial kynurenine aminotransferase activity, is applied in this study of a requirement for Ca++ for ...
Genetic studies of the Macushi and Wapishana Indians
(Springer-Verlag, 1977-01)
Blood samples from 509 Macushi and 623 Wapishana Amerindians of Northern Brazil and Southern Guyana have been analyzed with reference to the occurrence of rare variants and genetic polymorphisms of the following 25 systems: ...
The psychobiology of premenstrual dysphoria: review of theories and treatments
(Elsevier, 1977)
(1) Premenstrual mood changes such as depression, elation, anxiety, hostility and irritability are a common cause of disability in women. (2) The nature of the disorder, the clinical dimensions, the incidence, the psychological ...
Dispersal of sweet pignut hickory in a year of low fruit production, and the influence of predation by a curculionid beetle
(Springer-Verlag, 1977-09)
The rate at which fallen hickory nuts are removed from beneath the parent tree, and the effect on this rate of the seed predator Conotrachelus affinis , was studied in an oak-hickory forest in southeastern Michigan, USA, ...
Castration and reproductive behavior in the paradise fish, Macropodus opercularis (L.) (Osteichthyes: Belontiidae)
(Elsevier, 1977-09)
The effects of castration on male spawning behavior, nestbuilding and fertility were measured in a five day spawning trial with an intact female. Spawning and fertility decreased one week following castration while ...
Axon regeneration across the site of injury in the optic nerve of the newt Triturus pyrrhogaster
(Springer-Verlag, 1977-04)
The process by which axons regenerate following a freeze injury to the optic nerve of the newt was analyzed by light and electron microscopy. Freezing destroys cellular constituents in a one millimeter segment of the nerve, ...
DPNH peroxidase: Effector activities of DPN+
(Elsevier, 1977-09-09)
At suboptimal H2O2 concentrations, DPNH inhibits the peroxidase activity of the flavoprotein, DPNH peroxidase, by converting the enzyme to an unstable intermediate that decays slowly to inactive enzyme. It is postulated ...
Transport equations for a microbial predator-prey community
(Springer-Verlag; Springer-Verlag New York Inc., 1977-06)
A transport equation is used which describes the temporal behavior of interacting populations in changing environments. The formulation takes into account the internal state variables of the individuals. The general theory ...
Adenosine deaminase deficiency and severe combined immunodeficiency disease
(Elsevier, 1977-05-15)
The nature of the association of adenosine deaminase deficiency and severe combined immunodeficiency disease is reviewed. The basis for the molecular heterogeneity exhibited by adenosine deaminase in human tissue and the ...