Inside and outside the afro-Caribbean diaspora

Includes bibliography

Fractional order and dynamic simulation of a system involving an elastic wide plate

Numerous researchers have studied about nonlinear dynamics in several areas of science and engineering. However, in most cases, these concepts have been explored mainly from the standpoint of analytical and computational methods involving integer order calculus (IOC). In this paper we have examined the dynamic behavior of an elastic wide plate induced by two electromagnets of a point of view of the fractional order calculus (FOC). The primary focus of this study is on to help gain a better understanding of nonlinear dynamic in fractional order systems. © 2011 American Institute of Physics.

When small is different: The case of membranes inside tubes

Recently, classical elasticity theory for thin sheets was used to demonstrate the existence of a universal structural behavior describing the confinement of sheets inside cylindrical tubes. However, this kind of formalism was derived to describe macroscopic systems. A natural question is whether this behavior still holds at nanoscale. In this work, we have investigated through molecular dynamics simulations the structural behavior of graphene and boron nitride single layers confined into nanotubes. Our results show that the class of universality observed at macroscale is no longer observed at nanoscale. The origin of this discrepancy is addressed in terms of the relative importance of forces and energies at macro and nano scales. © 2012 Materials Research Society.

Mathematical analysis and simulations involving chemotherapy and surgery on large human tumours under a suitable cell-kill functional response

Dosage and frequency of treatment schedules are important for successful chemotherapy. However, in this work we argue that cell-kill response and tumoral growth should not be seen as separate and therefore are essential in a mathematical cancer model. This paper presents a mathematical model for sequencing of cancer chemotherapy and surgery. Our purpose is to investigate treatments for large human tumours considering a suitable cell-kill dynamics. We use some biological and pharmacological data in a numerical approach, where drug administration occurs in cycles (periodic infusion) and surgery is performed instantaneously. Moreover, we also present an analysis of stability for a chemotherapeutic model with continuous drug administration. According to Norton & Simon [22], our results indicate that chemotherapy is less eficient in treating tumours that have reached a plateau level of growing and that a combination with surgical treatment can provide better outcomes.

Epigenetic mechanisms in penile carcinoma

Penile carcinoma (PeCa) represents an important public health problem in poor and developing countries. Despite its unpredictable behavior and aggressive treatment, there have only been a few reports regarding its molecular data, especially epigenetic mechanisms. The functional diversity in different cell types is acquired by chromatin modifications, which are established by epigenetic regulatory mechanisms involving DNA methylation, histone acetylation, and miRNAs. Recent evidence indicates that the dysregulation in these processes can result in the development of several diseases, including cancer. Epigenetic alterations, such as the methylation of CpGs islands, may reveal candidates for the development of specific markers for cancer detection, diagnosis and prognosis. There are a few reports on the epigenetic alterations in PeCa, and most of these studies have only focused on alterations in specific genes in a limited number of cases. This review aims to provide an overview of the current knowledge of the epigenetic alterations in PeCa and the promising results in this field. The identification of epigenetically altered genes in PeCa is an important step in understanding the mechanisms involved in this unexplored disease. © 2013 by the authors; licensee MDPI, Basel, Switzerland.

A criança, a dança e a sociabilidade na escola

Pós-graduação em Artes - IA

Efeito da privação de ninho sobre a agressividade e o sucesso de acasalamento em machos de tilápia do Nilo

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Indústria cultural e infância: uma análise da relação entre as propagandas midiáticas, o consumo e o processo formativo das crianças

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Design instrucional: uma abordagem do design gráfico para o desenvolvimento de ferramentas de suporte à Educação a Distância

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Uma investigação etnomatemática sobre os trabalhos dos jesuítas nos Sete Povos das Missões/RS nos séculos XVII e XVIII

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Estudo das inter-relações patógeno-hospedeiro de Meloidogyne incognita (Kofoid & White) Chitwood, M. Javanica (Treub) Chitwood e Pratylenchus brachyurus (Godfrey) Filipjev & Schuurmans Stekhoven em cana-de-açúcar

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Avaliação da produção de Co2 em solo incorporado com substrato destinado ao uso agrícola por absorção de radiação infravermelha

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Fabricação e caracterização de fios supercondutores do sistema BSCCO pelo método Powder-In-Tube (PIT)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Concepções de licenciandos sobre violência sexual e políticas educacionais

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Avaliação microbiológica da alface (Lactuca sativa) em sistema de cultivo hidropônico e no solo, correlacionando os microrganismos isolados com os encontrados em toxinfecções alimentares em municípios da região Noroeste de São Paulo - SP

Pós-graduação em Microbiologia - IBILCE