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14.154  Articles
1 of 1.416 pages  |  10  records  |  more records»
In this paper, a new efficient immune genetic algorithm (IGA) is proposed for broadcast scheduling problem in TDMA Ad hoc network. Broadcast scheduling is a primary issue in wireless ad hoc networks. The objective of a broadcast schedule is to d... see more

The construction of artificial systems by drawing inspiration from natural systems is not a new idea. The Artificial Neural Network (ANN) and Genetic Algorithms (GAs) are good examples of successful applications of the biological metaphor to the solution ... see more

Inmunopatología de la influenza A H1N1 / Immunology of the Influenza A H1N1 infectionInmunopatología de la influenza A H1N1 / Immunology of the Influenza A H1N1 infectionSe realiza una actualización sobra la virología e inmunología en la infección por el virus  A H1N1.  La primera epidemia del siglo XXI fue declarada por la OMS el 9 de junio de 2009.  H1N1 es un nuevo virus de la influenza A con elevada contagiosidad lo que ha influido en la velocidad de propagación de la infección entre los diferentes países y ha propiciado una alta morbimortalidad.  La característica de su genoma (ARN), al estar constituido por 8 fragmentos, interviene en la replicación viral defectuosa y en el proceso de flujo y cambio antigénico, con rearreglo genético que causa la aparición de nuevas cepas del virus.  La inducción ineficiente de interferón por la célula hospedera, el débil papel de los anticuerpos neutralizantes en la primoinfección, y la liberación de citoquinas proinflamatorias, sumado a las sobreinfecciones bacterianas condicionan la alta morbilidad y mortalidad que se incrementa en determinadas condiciones de comorbilidad de los individuos infectados.  Los cambios que ocurren en los antígenos virales impiden el reconocimiento por el sistema inmune., y ahí radica la dificultad para la preparación definitiva de una vacuna.  Entender la inmunopatología de la infección, así como divulgar esta información a la comunidad científica, constituye el paso inicial para la toma de decisiones a favor de evitar la propagación de la infección.Palabras clave. Gripe humana/prevención & y control, Virus de la Influenza A/inmunología/patogenicidad, MUTACIÓN/genética ABSTRACTAn update about the virology and immunology of the Influenza A H1N1 infection is made.  The first epidemic of the XXIth century was addresses by WHO on June 9th, 2009.  H1N1 is a new virus of the Influenza A, showing increased infection, thereby influencing on the spreading speed of the infection among different countries leading to high morbidity and mortality.  The viral genome (RNA), being formed of 8 fragments, works for a defective viral replication and on the process of antigenic flux and change, having a genetic rearrangement causing the appearance of new viral strains.  The inefficient induction of interferon, the weak role of neutralizing antibodies in the prime-infection, and the release of pro-inflammatory cytokines, added to the bacterial superimposed infections will condition the high morbidity and mortality that are increased in certain comorbid conditions of the infected individuals.  Changes occurring on viral antigens avoid the reconnaissance of the virus by the immune system, then the difficulty to make a proper vaccine.   Understanding the immunopathology of this infection, so as the divulgation of this information to the scientific community, are the initial steps for the taking of decisions to favor the avoiding of the infection spreading.Key words: Human influenza/prevention & control, Influenza A virus/inmunology/pathogenicity, MUTATION/genetics.

ABSTRACTAn update about the virology and immunology of the Influenza A H1N1 infection is made.  The first epidemic of the XXIth century was addresses by WHO on June 9th, 2009.  H1N1 is a new virus of the Influenza A, showing increased infection,... see more

Context. The problem of automation synthesis of artificial neural networks for further use in diagnosing, forecasting and patternrecognition is solved. The object of the study was the process of synthesis of ANN using a modified genetic algorithm.Objectiv... see more

BACKGROUND: Recurrent respiratory tract infections (RRI) are one of the extremely high common reasons for pediatric visits and hospitalization. Immunodeficiencies are considered as important conditions that may increase the probability of occurrence of RR... see more

Popovych Igor L, Gumega Myroslav D, Verba Igor E, Popovych Andrii I, Korolyshyn Tetyana A, Tkachuk Svitlana P, Ostapenko Volodymyr M, Zukow Walery. Comparative investigation effects on nervous and immune systems of bioactive water Naftussya Spa Trusk... see more

This paper aims to set up new rules for processing seawater quality monitoring data collected by photoelectric sensor network, and mine out the useful information contained in the data. For this purpose, the immune algorithm was introduced to the classica... see more

Novel immune-enzyme assay system for quantification of soluble CD18 in human biological fluids is being constructed. Recombinant standard for this immune-enzyme assay system has been obtained by means of genetic engineering.

Hepatitis C virus (HCV) exists as a cloud of closely related sequence variants called a quasispecies, rather than as a population of identical clones. To date there is no preventive vaccine and though antiviral therapy has been improved in the past few ye... see more

1 of 1.416 pages  |  10  records  |  more records»