J G G S Ramos

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Ripening of the rat cervix involves widespread collagenolysis that follows an eosinophilic leukocyte infiltration. The hormonal control of these events is not well understood. The aims of this study were to investigate the mechanism through which progesterone (P) and 17beta-estradiol (E(2)) modulate eosinophilic invasion and to determine if this event is(More)
This study examines the effects of neonatal exposure to the endocrine disruptor bisphenol A (BPA) on the neural network that controls estrous cyclicity. From postnatal day 1 (PND1) to PND7, female pups were injected with vehicle (control) or BPA (BPA.05: 0.05mg/kg-d, BPA20: 20mg/kg-d). At PND100 BPA.05-females showed alterations in estrous cyclicity and(More)
We search for regular tachyon kinks in an extended model, which includes the tachyon action recently proposed to describe the tachyon field. The extended model that we propose adds a new contribution to the tachyon action, which allows obtaining stable tachyon kinks of regular profile, which may appropriately lead to the singular kink found by Sen sometime(More)
The effects of adding tetrodotoxin, zinc, tetraethylammonium and manganese ions and the effects of the changes in calcium concentration in the bathing solution were studied upon the initiation and propagation of spreading depression waves elicited in the isolated chicken retina. The spreading depression (SD) was unaffected by tetrodotoxin in the(More)
A depressant reaction of the electrocortical activity of the brain cortex is described. The changes consist in decrease in the amplitude and frequency of the basal waves of the electrocorticogram together with the appearance of slow waves similar to those of the sleep state. The results are more clear upon the dendritic action potentials induced by the(More)
The all-or-nothing spikes elicited by antidromic, afferent, or direct electrical stimulation of a cortical area treated with mescaline or strychnine were studied. These potentials are most probably originated in nonsynaptic dentritic membranes and their changes in amplitude and latency can be an index of the excitability of these structures. Several factors(More)
Oine narrowing-driven partial evaluation is a recent technique for the specialization of functional and functional logic programs. In this work, we describe novel control strategies that can be used to design a powerful narrowing-driven partial evaluator. 1 Introduction Partial evaluation [12] is a well-known technique for the specialization of programs.(More)
We derive analytical expressions for the correlation functions of the electronic conductance fluctuations of an open quantum dot under several conditions. Both the variation of energy and that of an external parameter, such as an applied perpendicular or parallel magnetic fields, are considered in the general case of partial openness. These expressions are(More)
We present a simple measure of the conductance fluctuations in open ballistic chaotic quantum dots, extending the number of maxima method originally proposed for the statistical analysis of compound nuclear reactions. The average number of extreme points (maxima and minima) in the dimensionless conductance T as a function of an arbitrary external parameter(More)
Normal parturition in guinea-pig involves changes in responsiveness of the genital tract to estrogen and progesterone. To better characterize endocrine control of guinea-pig parturition, protein and mRNA expression of estrogen receptor-alpha (ERalpha) and progesterone receptor (PR) were quantitatively evaluated in lower (LUS) and upper (UUS) uterine(More)