Advanced Modulation
Mostrando 1-12 de 35 artigos, teses e dissertações.
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1. METABOLÔMICA: DEFINIÇÕES, ESTADO-DA-ARTE E APLICAÇÕES REPRESENTATIVAS
Metabolomics is an emerging and promising omics approach used to understand biological mechanisms. By untargeted and targeted metabolomics analyses, metabolites are determined in biological samples (fluids, cells, tissues, etc.) by comparison of control groups with altered groups, undergoing different therapies, submitted to differing stress levels, dietary
Quím. Nova. Publicado em: 2018-01
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2. O efeito pró-apoptótico de oligômeros da amilina humana não é potencializado pela lipotoxicidade em ilhotas pancreáticas de rato em cultura / The pro-apoptotic effect of human amylin oligomers is not potentiated by lipotoxicity in rat pancreatic islets in culture
The amyloid deposit is a common histopathological feature in patients with type 2 diabetes mellitus (T2DM) and it seems to be related to the pancreatic beta cell dysfunction characteristic of this disease. A study previously developed in our laboratory found that human amylin oligomers decrease mRNA expression of the glucose-dependent insulinotropic polypept
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/07/2012
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3. Atividade anti-angiogênica e modulação das proteínas envolvidas na neoformação vascular por compostos bioativos da própolis / Anti-angiogenic activity and modulation of protein-involved in new vases formation by propolis bioactive compounds
Propolis is rich in bioactive compounds and widely used in alternative medicine as a preventive agent and/or in therapy. We evaluate the impact of polyphenol-rich fractions of propolis from different origins and types in the angiogenesis process in atherosclerotic lesions. The following samples of propolis were used: Red (red, Alagoas, Brazil), Green (green,
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/07/2011
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4. Immunological and non-immunological effects of cytokines and chemokines in the pathogenesis of chronic Chagas disease cardiomyopathy
The pathogenesis of Chagas disease cardiomyopathy (CCC) is not well understood. Since studies show that myocarditis is more frequent during the advanced stages of the disease, and the prognosis of CCC is worse than that of other dilated cardiomyopathies of non-inflammatory aetiology, which suggest that the inflammatory infiltrate plays a major role in myocar
Memórias do Instituto Oswaldo Cruz. Publicado em: 2009-07
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5. Análise comparativa de formatos de modulação OOK, DPSK e DQPSK para sistemas de fibras ópticas operando a taxas de 40 Gb/s / comunicação óptica; formato de modulação óptica; modulação avançada; redes ópticas
Estudo sobre
Publicado em: 2009
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6. Caracterização espectral e avaliação de desempenho para formatos avançados de modulação digital optica em 40 Gb/s / Spectral characterization and performance evaluation for advanced digital optical modulation formats at 40 Gb/s
This work compares the performance of four feedforward carrier recovery architectures in coherent QPSK and 8-PSK receivers, with polarization multiplexing and differential decoding. We focused on the scenarios showing an SNR imbalance between orthogonal polarizations, as in PDL impaired systems. Using Monte Carlo simulations, we observed that the proposed jo
Publicado em: 2009
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7. Study of special modulation formats for optical communication / Estudo de formatos especiais na modulação digital para comunicações ópticas
This MSc thesis investigates optical modulation formats as an alternative to the use of the traditional intensity binary format NRZ (Non-return-to-zero). Those formats, classified as advanced, represent one of the key technologies aimed to enable the high data volume and broadband, demanded by the present telecommunication market, with cost reduction of tran
Publicado em: 2009
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8. PressÃo arterial, frequÃncia cardÃaca e sua modulaÃÃo autonÃmica em ratos malnutridos em diferentes idades
Undernutrition during human development is one of the principal causes of various systemic alterations and is characterized as one of the greatest public health problems in underdeveloped countries. Using an experimental model that reproduces in rats a type of human malnutrition found in the Northeast of Brazil, we use a multideficient hypoproteic and hyperc
Publicado em: 2009
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9. Proposta de política de adaptação de enlace EDGE como caminho de evolução para provimento de serviços IMS de terceira Geração / Proposal for a policy of EDGE link adaptation as way of evolution for provisions of third generation IMS services
With the increasing demand for wireless packet data services, 3G wireless carriers today are faced with the challenge of offering multimedia applications with quality of service requirements while at the same time effectively utilizing precious wireless bandwidth. These new data services require increased bandwidth and data throughput, due to their intrinsic
Publicado em: 2008
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10. MI-SBTVD: a proposal for the Brazilian digital television system SBTVD
The objective of this paper is to present a general overview of the Innovative Modulation System Project -MI-SBTVD - developed for the Brazilian Digital TV System. The MI-SBTVD Project includes an LDPC high performance error correcting code, an advanced transmit spatial diversity and an efficient multi-carrier modulation scheme. The building blocks of the sy
Journal of the Brazilian Computer Society. Publicado em: 2007-03
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11. Image and Likeness : a study on child s image in the paintings by Eliseu Viscont, Vicente do Rego Monteiro, Tarsila do Amaral and Lasar Segall / A Imagem e Semelhança : um estudo sobre a imagem da crinaça nas pinturas de Eliseu Visconti, Vicente do Rego Monteiro, Tarsila do Amaral e Lasar Segall
This study analyses the image of children in the paintings of Eliseu Visconti, Vicente do Rego Monteiro, Tarsila do Amaral, and Lasar Segall. It encompasses the period of approximately 1890 to 1940, whose central line of problematics is the emergence of a political, artistic, and cultural movement. That period registers a profound change, not only in the soc
Publicado em: 2007
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12. Implementação de codificador LDPC para um sistema de TV digital usando ferramentas de prototipagem rapida / Implementation of an LDPC encoder for a digital TV system using rapid protoyping tools
This work presents the several phases in the implementation of an LDPC encoder for a digital television system, developed using innovative technologies for rapid prototyping on Field Programmable Gate Array devices - FPGAs. The implemented encoder was based on an eIRA - extended Irregular Repeat Accumulate - LDPC code with codeword-Iength equal to 9792 bits
Publicado em: 2006