Encontrados 73 documentos, a visualizar página 1 de 8

Distribution of 3G signals over fiber

In this work we study the feasibility of UMTS (3G) transmission over Passive Optical Networks (P.O.N.). In order to achieve such objective, it was developed a simulator, so that we could correctly model the system and conclude about its impairments. The simulation results obtained validate this kind of transmission and highlight the associated limitations. ; Neste trabalho é estudada a viabilidade da tr...

Optimização eficiente do ganho espectral de amplificadores de Raman com bombage...

We report the use of the Genetic Algorithm (GA) in the optimization of a distributed Raman amplifier spectralgain. The used methodology is based on the direct integrationof Raman propagation equations making use of the transfermatrix method, which ensue into a considerable reduction ofthe computation time. Pointing out an on/off Raman gain of10 dB, we develop a technique based in a combination of theGA with the...

Development of Suitable Tools for the Evaluation of ATM Systems Performance

The work carried on during this M. Sc. Dissertation aimed essentially the identification study and development of an appropriate set of analytical and simulation tools that could help us to understand the functional mechanisms of ATM networks, to evaluate their performance when they are submitted to certain types of traffic, and to project and develop appropriate mechanisms to prevent and recover from traffic c...

The impact of GGH -401C>T polymorphism on cisplatin-based chemoradiotherapy res...

AIMS: Cervical cancer is the third most frequent cancer in women worldwide, mostly treated with cisplatin-based chemoradiotherapy. Since it is known that folate metabolism might interfere with cisplatin effectiveness, we intended to study the influence of the Gamma Glutamyl Hydrolase -401C>T polymorphism in treatment response in cervical cancer. METHODS: We retrospectively reviewed the clinical data of 167 pat...

The impact of GGH -401C>T polymorphism on cisplatin-based chemoradiotherapy res...

AIMS: Cervical cancer is the third most frequent cancer in women worldwide, mostly treated with cisplatin-based chemoradiotherapy. Since it is known that folate metabolism might interfere with cisplatin effectiveness, we intended to study the influence of the Gamma Glutamyl Hydrolase -401C>T polymorphism in treatment response in cervical cancer. METHODS: We retrospectively reviewed the clinical data of 167 pati...

The impact of GGH -401C>T polymorphism on cisplatin-based chemoradiotherapy res...

AIMS: Cervical cancer is the third most frequent cancer in women worldwide, mostly treated with cisplatin-based chemoradiotherapy. Since it is known that folate metabolism might interfere with cisplatin effectiveness, we intended to study the influence of the Gamma Glutamyl Hydrolase -401C>T polymorphism in treatment response in cervical cancer. METHODS: We retrospectively reviewed the clinical data of 167 pat...

The impact of GGH -401C>T polymorphism on cisplatin-based chemoradiotherapy res...

AIMS: Cervical cancer is the third most frequent cancer in women worldwide, mostly treated with cisplatin-based chemoradiotherapy. Since it is known that folate metabolism might interfere with cisplatin effectiveness, we intended to study the influence of the Gamma Glutamyl Hydrolase -401C>T polymorphism in treatment response in cervical cancer. METHODS: We retrospectively reviewed the clinical data of 167 pati...

Water requirements and footprint of a super intensive olive grove under Mediter...

Abstract The water footprint of a product can be described as the volume of freshwater used to produce it, associated to a geographic and temporal resolution. For crops, the water footprint relates crop water requirements and yield. The components of water footprint, blue, green and grey water footprints, refer to the volumes of respectively, surface and groundwater, rainfall, and water required to assimilate p...

Pegada hídrica de um olival super-intensivo sob clima mediterrânico, utilizando...

A pegada hídrica de uma cultura representa o volume de água necessário para produzir, relacionando as necessidades hídricas da cultura com a produção. As suas componentes, pegadas hídricas azul, verde e cinzenta, referem-se respectivamente aos volumes de água superficial e subterrânea, precipitação e de água necessária para assimilar a poluição utilizados pela cultura. A determinação das pegadas hídricas azul e...

Determinação de Trihalometanos em piscinas do Concelho de Lisboa. Classificação...