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Remote Optical Monitor of Blood Oxygenation

Pulse oximetry is a widely used technique in biomedical analyses. It enables monitoring the percentage of saturated hemoglobin and heart pulse in a noninvasive way.The mandatory permanence of patients in medical facilitiesdue to continuous measurements of blood oxygen saturationand cardiac pulse can be avoided by taking advantage of nowadays telecommunications technologies. This paperdescribes a pulse oximeter ...

Molecular aspects and comparative genomics of bacteriophage endolysins

Phages are recognized as the most abundant and diverse entities on the planet. Their diversity is predominantly determined by their dynamic adaptation capacities, when confronted with different selective pressures in an endless cycle of co-evolution with a widespread group of bacterial hosts. At the end of the infection cycle, progeny virions are confronted with a rigid cell wall that hinders their release into...

Molecular and functional aspects of bacteriophage endolysins

Insights into phage endolysins

(Bacterio)phages are viruses that specifically infect bacteria, and thus are harmless to humans, animals, and plants. They are the most abundant microorganisms on the planet (estimated to be 1031 on Earth) in a ratio of 10 times more than bacteria (1). Consequently, even rare phage-induced events are frequent at the global level. Therefore, they have a staggering ecological impact on the bacterial population an...

Fator de emissão de óxido nitroso (N2O) para a fertilização com N na cultura do...

Introdução. Fatores envolvidos nas emissões de óxido nitroso (N2O). O que é o fator de emissão. Medindo o fator de emissão sob a cultura do feijoeiro comum irrigado em Santo Antônio de Goiás - GO. As condições do experimento. A coleta de gases emitidos do solo. Cálculo dos fluxos de N2O (FN2O) e das emissões. O fator de emissão para N2O oriundo da cultura de feijoeiro sob irrigação por aspersão em pivô central....

PACEM: a new concept for high avalanche-ion blocking

We present the Photon-Assisted Cascaded Electron Multiplier (PACEM) as a potential alternative for ion back-flow suppression in gaseous cascade electron multipliers. Using a Micro Hole and Strip Plate-Gas Electron Multiplier (MHSP-GEM) configuration, the number of ions flowing back to the scintillation region is about 1.5 ions per primary electron at an optical gain of 6.5 and a drift field of 0.1 kV/cm, and ab...

High-rate operation of the Micro-Hole and Strip Plate gas detector

We report the performance of the Micro-Hole-and-Strip-Plate (MHSP) operated in xenon, under high-flux irradiation of a 30-kV X-ray Cu-tube. Stable operation in pulse-counting mode for gas gains above 104 was measured up to counting rates of 5×105 Hz/mm2. A gain variation of less than 5% was observed for gains of 104, while the energy resolution for 8-keV X-rays degrades from ~16% to ~18%. No visible degradation...

Guia para descrição de recurso eletrônico no Sistema Agência utilizando Dublin ...

Elementos de metadados Dublin Core. Uso de metadados Dublin Core no Sistema Agência. Regras gerais para descrição de recursos no Sistema Agência. Descrição dos elementos Dublin Core em uso no Sistema Agência. ; 2002 ; Acesso em: 29 maio 2008.