BACKGROUND: The tests used for anemia screening in blood donors are based on fingerstick samples, leading to discomfort and complaints. aim of this study was analyze the feasibility occlusion spectroscopy method banks compare with hemoglobinometer hemoglobin (Hb) determination an automatic analyzer. STUDY DESIGN AND METHODS: enrolled 205 consecutive volunteer donors. Samples were collected by venous punction determine Hb level a Hemocue Hb201+ (Hb‐F) analyzer (Hb‐V) noninvasive using NBM200...

Abstract Short-term optimization of an oil field has been used to increase economic value recovery as compared reactive control (shutting the well when water cut limit is reached, for instance), especially in case short-term production strategies. One way improve management a involves adjusting flow rates over short time, maximizing overall NPV during life cycle field. Using intelligent wells (IW), challenges include not only rates, but also simultaneous adjustment each valve, controlling...

Abstract Intelligent wells can improve oil recovery, mitigate risks and avoid unnecessary well intervention in petroleum fields. However, there is no consolidated methodology to evaluate the applicability of intelligent represent them commercial simulators, which complicates comparison with conventional wells. Moreover, are two main modes operation valves, reactive proactive; each one provide different benefits. In general, proactive control seeks maximum but it requires larger computational...

The closed-loop optimization paradigm of an oil field can increase recovery and reduce water production, maximizing economic gains. One way to improve the management a involves designing optimal production strategies by means dynamically adjusting flow rates or bottom-hole pressures over reservoir life-cycle operation. A major difficulty occurs in optimizing all wells, according constraint along field. These control are often difficult be realized practice due large number variables adjusted...

Abstract Carbonated reservoirs with high percentage of CO 2 have been discovered and produced in the Brazilian pre-salt cluster. Recovery techniques, such as -WAG, hence evaluated applied, Lula field. Although studies demonstrate advantages this technique, it is still difficult to estimate an increase oil recovery. Thus, work presents a methodology evaluate impacts main phenomena that occur how recycling can benefit management these fields. The results showed recovery modeling relative...

Boron-doped carbon nanotubes have been prepared by chemical vapour deposition of ethyl alcohol doped with B2O3 using a hot-filament system. Multi-wall diameters in the range 30 – 100 nm observed field emission scanning electron microscopy (FESEM). Raman measurements indicated that degree C-C sp2 order decreased boron doping. Lowest threshold fields achieved were 1.0 V/μm and 2.1 for undoped boron-doped samples, respectively.

INTRODUÇÃO: Identificar a Doença Renal Crônica (DRC) em seus estágios iniciais permite intervenções com potencial de alterar evolução natural da doença e diminuir mortalidade precoce. O Screening For Occult Disease (SCORED) é um questionário nove questões pesos diferentes prevê uma chance 20% para DRC caso pontuação > 4 pontos. OBJETIVO: Traduzir, adaptar transculturalmente validar o SCORED português brasileiro. MÉTODOS: Etapas do processo: 1. Tradução inglês brasileiro; 2. Retrotradução...

To mitigate high reservoir heterogeneities and fluids mobility differences, oil industry has developed methodologies technologies like recovery methods at level, intelligent completion system well level.Polymer flooding is a method used to enhance the sweep efficiency in order lead as much possible producer wells, meanwhile technology allows manage flow of into wellbore, thus reducing water production its costs involved.This work aims study behavior change due implementation parallel polymer...

Abstract Smart completion allows higher operational flexibility for the development of petroleum fields than conventional completion. However, real benefits this technology are not always clear. In order to compare advantages and disadvantages each type in exploitation oil fields, it is necessary optimize production strategy both options. This paper presents a methodology strategies with reactive proactive control valves smart wells; same applied wells different behaviors. aims help manager...

Abstract The exploitation of an oil field in deep water presents many challenges related to high production, cost frequent well interventions and uncertainties. One the technologies available, which can overcome these problems, is use intelligent wells (IW), are capable reducing production rates, avoid intervention add operational flexibility mitigate risk. However, real benefits this technology not always clear due lack a consolidated methodology literature. Moreover, there also two main...

The optimisation of well rates an oil field can increase recovery and reduce water production, maximising production life-cycle economic gains. A way to improve the management involves designing optimal strategies by dynamically adjusting wells flow under constraints platform. In this way, we have tested some options control available in a commercial simulator. These assessments were made two ways: 1) with default parameters formulas used these controls; 2) hybrid each type control. We...