oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2015 ( 1 )

2014 ( 1 )

2013 ( 6 )

2012 ( 20 )

Custom range...

Search Results: 1 - 10 of 160 matches for " Maximino "
All listed articles are free for downloading (OA Articles)
Page 1 /160
Display every page Item
Evolutionary Changes in the Complexity of the Tectum of Nontetrapods: A Cladistic Approach
Caio Maximino
PLOS ONE , 2008, DOI: 10.1371/journal.pone.0003582
Abstract: Background The tectum is a structure localized in the roof of the midbrain in vertebrates, and is taken to be highly conserved in evolution. The present article assessed three hypotheses concerning the evolution of lamination and citoarchitecture of the tectum of nontetrapod animals: 1) There is a significant degree of phylogenetic inertia in both traits studied (number of cellular layers and number of cell classes in tectum); 2) Both traits are positively correlated accross evolution after correction for phylogeny; and 3) Different developmental pathways should generate different patterns of lamination and cytoarchitecture. Methodology/Principal Findings The hypotheses were tested using analytical-computational tools for phylogenetic hypothesis testing. Both traits presented a considerably large phylogenetic signal and were positively associated. However, no difference was found between two clades classified as per the general developmental pathways of their brains. Conclusions/Significance The evidence amassed points to more variation in the tectum than would be expected by phylogeny in three species from the taxa analysed; this variation is not better explained by differences in the main course of development, as would be predicted by the developmental clade hypothesis. Those findings shed new light on the evolution of an functionally important structure in nontetrapods, the most basal radiations of vertebrates.
Modulation of nociceptive-like behavior in zebrafish (Danio rerio) by environmental stressors
Maximino, Caio;
Psychology & Neuroscience , 2011, DOI: 10.3922/j.psns.2011.1.017
Abstract: zebrafish have been demonstrated to react consistently to noxious chemical stimuli and present reliable phenotypes of stress, fear, and anxiety. in this article, we describe the modulation of nociceptive-like responses of zebrafish to fear-, stress-, and anxiety-eliciting situations. animals were exposed to an alarm substance, confinement stress, or a novel environment before being injected with 1% acetic acid in the tail. the alarm substance and confinement stress reduced the display of erratic movements and tail-beating behavior elicited by acetic acid. the novelty of the environment, in contrast, increased the frequency of tail-beating behavior. the results suggest that descending modulatory control of nociception exists in zebrafish, with apparent fear- and stress-induced analgesia and anxiety-induced hyperalgesia.
Modulation of nociceptive-like behavior in zebrafsh (Danio rerio) by environmental stressors
Caio Maximino
Psychology & Neuroscience , 2011,
Abstract: Zebrafsh have been demonstrated to react consistently to noxious chemical stimuli and present reliable phenotypes of stress, fear, and anxiety. In this article, we describe the modulation of nociceptive-like responses of zebrafsh to fear-, stress-, and anxiety-eliciting situations. Animals were exposed to an alarm substance, confnement stress, or a novel environment before being injected with 1% acetic acid in the tail. The alarm substance and confnement stress reduced the display of erratic movements and tail-beating behavior elicited by acetic acid. The novelty of the environment, in contrast, increased the frequency of tail-beating behavior. The results suggest that descending modulatory control of nociception exists in zebrafsh, with apparent fear- and stress-induced analgesia and anxiety-induced hyperalgesia.
Dynamics of Boolean Networks with Scale-Free Topology
Maximino Aldana
Physics , 2002,
Abstract: The dynamics of Boolean networks (the N-K model) with scale-free topology are studied here. The existence of a phase transition governed by the value of the scale-free exponent of the network is shown analytically by analyzing the overlap between two distinct trajectories. The phase diagram shows that the phase transition occurs for values of the scale-free exponent in the open interval (2,2.5). Since the Boolean networks under study are directed graphs, the scale-free topology of the input connections and that of the output connections are studied separately. Ultimately these two topologies are shown to be equivalent. An important result of this work is that the fine-tuning usually required to achieve stability in Boolean networks with a totally random topology is no longer necessary when the network topology is scale-free.
Treatment of Bilateral Recurrent Dislocation of Hip Pros-thesis with Malpositioned Well-Fixed Shell: A Case Report  [PDF]
Fernando Judas, Luis Maximino, Francisco Lucas
Open Journal of Orthopedics (OJO) , 2013, DOI: 10.4236/ojo.2013.33031
Abstract: Dislocations of total hip prostheses cause pain and patient dissatisfaction. Recurrent dislocations are difficult to treat mainly when the acetabular metal shell is well-fixed. The purpose of this article was to describe the surgical technique used for the treatment of a bilateral recurrent posterior dislocation after a cementless total hip prosthesis, caused by excessive inclination of acetabular components, in a 72-year-old patient. On both sides, acetabular metal shell, porouscoated, was well-fixed. Revision of the entire acetabular component could be an appropriate therapeutic option because it was malpositioned. Nevertheless, a conservative operation was performed. The metal shell was left in situ and the preexisting polyethylene liner was removed and replaced by a new undersized cross-linked polyethylene liner, then, cemented into the shell and properly oriented. An acetabular cemented augmentation reinforced by 3 cortical screws was associated with the reconstruction. This report suggests that cementation of new liner into a malpositioned well- fixed metal shell associated with an acetabular cemented augmentation is a simple and safe technique for the management of recurrent hip dislocation, for elderly patients in which it is advisable to avoid a major revision hip surgery by medical comorbidities. Nonetheless, further studies with medium-and long-term follow-up are needed to validate this technique.
1890: el 'Quijote' en romance
Maximino Carrillo de Albornoz
Panace@ : Revista de Medicina, Lenguaje y Traducción , 2005,
Abstract:
Pluralidade racial: um novo desafio para a psicologia
Caio Maximino de Oliveira
Psicologia: Ciência e Profiss?o , 2002, DOI: 10.1590/s1414-98932002000400005
Abstract: Esse artigo tem por objetivo analisar os elementos que constituem o racismo e a discrimina o por meio de uma perspectiva psicossocial, demonstrando as raízes culturais das manifesta es de preconceito e sua origem no mito do bode expiatório. Visa mostrar a nossa imers o quase completa na ideologia dominante, jogando principalmente com os conceitos de imaginário social, ideologia, hegemonia e autoridade e sua constru o social. Apresenta um ponto de vista anti-autoritário e por meio deles, demonstra o desafio da Psicologia em se livrar dos grilh es impostos pela ideologia dominante que a impedem de ser ciência n o comprometida com as classes dominantes. This paper aims to determine the causes of racism and discrimination through a psychosocial perspective, demonstrating the cultural roots of prejudiced manifestations and its origins in the myth of the scapegoat. The objective is, thus, to show our almost complete immersion in the dominant ideology, dealing mainly with the concepts of social imaginary, ideology, hegemony and authority and its historical construction. An anti-authoritarian point of view is placed. Through it, Psychology's challenge in getting rid of its manacles, imposed by the dominant ideology, that hinders it from being a science not involved with the dominant classes.
Cupper in animal tissues
Maximino Huerta Bravo
Nacameh , 2010,
Abstract: Cupper is an essential element for plants, animals and humans. Under certain circumstances, cupper excessive consumption could result in animal and human intoxication. In order to ensure safe and innocuous and safe foods for Mexicans, government create legislation as Norma Oficial Mexicana to establish the maximum levels of residues, particularly cupper in liver, kidney and muscle of human consumption animals. Liver in Mexico ruminant animals regularly contain 60 mg Cu/kg, which is the legal limit for this metal. This demands a review of the actual legislation. The strict application of this Norma will limit the commercialization of these viscera, since approximately 50% will exceed the legal limit for cupper. A potential hazard for human health, especially young people, is found in the constant ovine liver consumption feed with animal excretes with higher amount of supplementary cupper.
Dynamical Phase Transition in a Neural Network Model with Noise: an Exact Solution
Cristian Huepe,Maximino Aldana
Physics , 2002,
Abstract: The dynamical organization in the presence of noise of a Boolean neural network with random connections is analyzed. For low levels of noise, the system reaches a stationary state in which the majority of its elements acquire the same value. It is shown that, under very general conditions, there exists a critical value of the noise, below which the network remains organized and above which it behaves randomly. The existence and nature of the phase transition are computed analytically, showing that the critical exponent is 1/2. The dependence of the critical noise on the parameters of the network is obtained. These results are then compared with two numerical realizations of the network.
Planejamento estratégico em saúde com base em determinantes: o caso do município de Campo Bom (RS). Uma proposta metodológica para a gest?o descentralizada
González,Martín Maximino León;
Ciência & Saúde Coletiva , 2009, DOI: 10.1590/S1413-81232009000800032
Abstract: with the purpose to analyze the health strategic planning model based on determinants experienced in the municipality of campo bom, rio grande do sul state, it was conducted an observational, qualitative study, of documental analysis as well as an evaluation of new process technologies in local health administration. this study contains an analysis of the methodological coherency and applicability of this model, based on the revision of the elaborated plans. the plans presented at campo bom case shows the possibility of integration and applicability at local level, of a health strategic planning model oriented to the new health concepts considering elements of different theoretical developments that enables the response to the most common local needs and situations. it was identified evolutional stages of health planning and analyzed integrative elements of the model and limitations of its application, pointing to the need of support the deepening on the study and the development of the field.
Page 1 /160
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.