41 research outputs found

    IN-SITU CARBON DIOXIDE GENERATION FOR OIL RECOVERY: EXPERIMENTAL STUDY OF PRESSURE AND TEMPERATURE VARIATIONS DURING STOICHIOMETRIC REACTION

    Get PDF
    ABSTRACT • CO 2 flooding can increase oil recovery by 7-15% Experimental simulation of chemical reaction behavior between gas-forming (GF) and carbonate rock components has been conducted. During the reaction an allocation of carbon dioxide and pressure change in PVT bombe were discovered. In these series of experiments a dynamics of pressure and temperature changes during stoichiometric reaction between GF reactant and a carbonate rock was investigated. The GY component was prepared on fresh water (Shollar). As a carbonate rock samples, Karadag rock deposits (Azerbaijan) were used. Researches were conducted at constant temperature Т=293 K and at various volumetric ratios of GY reactant and a carbonate rock The quantity of reacting agents was defined from stoichiometric correlation which provided a full neutralization of the tested rock

    Costs and Benefits of Labour Mobility between the EU and the Eastern Partnership Partner Countries - Country Report: Azerbaijan

    Full text link
    This Report is one of the six studies in the first phase of the EU project on the "Costs and Benefits of Labour Mobility between the EU and the Eastern Partnership Partner Countries". It aims at providing an informed view of the potential for increased migration flows and their consequences as a result of possible changes in the migration policies of the European Union with regard to Azerbaijan. The Report is comprised of 7 Chapters. Chapters 1 and 2 provide a discussion of relevant developments in the economy and labour market in the period since independence, with emphasis on developments over the last ten years or so. Chapter 3 provides a detailed discussion of trends in migration, and discusses the labour migration profile. Chapter 4 analyses remittances and their impact on income, investment and consumption. Chapter 5 provides a discussion of the available evidence on the costs and benefits of labour migration, emphasising the economic, social and demographic costs and consequences. Chapter 6 discusses current migration policies and institutions, while Chapter 7 discusses various factors that may be useful in forecasting key migration trends in the future

    FLOW AROUND A SUDDENLY START ROTATING CIRCULAR CYLINDER AND INTRODUCE A NEW PARADOX

    No full text
    ABSTRACT There have been many misunderstanding about the flow around vortices for example a stationary and/or moving vortex pair. The authors have pointed out that no fluid dynamics textbooks have accepted the existence of stationary or arbitral speed moving vortices. About the vortex flow, recently the authors have found a new analytic solution of the Navier-Stokes equations for twodimensional flow around a suddenly start rotating circular cylinder. This analytic solution explains the velocity distribution, vorticity distribution with change in time, and boundary layer thickness close to a vortex filament because of the action of viscosity. The resulting solutions are involved simple exponential function. Authors present a new construction for the solution of the Navier-Stokes equations for suddenly start rotating circular cylinder. New solution is based on the concept of the similarity solution approach using similarity variable, dimensional analysis, initial, & boundary conditions. A brief theoretical discussion is presented about the suddenly start rotating circular cylinder. The second part of the paper deals with the analytic solution being compared with experimental results in various Reynolds number. A typical measurement is that of relaxation of rotational velocities when the cylinder is subjected only to the viscous resistance. To measure the velocity distribution of the flow the experiments were made with the help of tracer particle (aluminum powder and 150-grain diameter meshes) for water and oil (Super Mulpus 68). The effects of the Reynolds number on the laminar asymmetric flow structure in the flow region are studied. The induced speed distribution in the rotation of cylinder (diameter 10 mm) circumference has examined about the Reynolds number from 26 to 522 for water consequent cylinder rpm 10, 25, 50, 75, 100 and 0.12 to 2.32 for Super Mulpus 68 Oil consequent cylinder rpm 5, 10, 25, 50, 75, 100. The relation between the induced speeds after the time had passed enough and the various cylinder rotational speeds for both analytical and experimental results are shown. At lower Reynolds number experimental results are closer to theoretical results for a finite time condition, at that time there is exist vorticity around the cylinder. We can also establish that more difference between experimental and theoretical results with higher Reynolds number. An interesting phenomenon has been observed in the flow patterns at various Reynolds number and is discussed. Finally, authors have explained the significant difference between experimental and theoretical results and a new paradox has been introduced

    Rôles potentiels des infirmiers et infirmières en oncologie du Canada dans les centres de diagnostic rapide du cancer du sein

    No full text
    La mise en place des centres de diagnostic rapide pour le cancer du sein accroît la responsabilité des infirmiers et infirmières en oncologie (I&IO) concernant l’éducation des patients et la coordination des soins multidisciplinaires. Élaboré dans le cadre de l’E-Mentorship Oncology Nursing Program, cet article propose de nouveaux rôles pour ces infirmiers et infirmières afin de réagir en toute efficacité et compétence à une telle innovation en matière de diagnostic. C’est le cadre conceptuel pour l’innovation du Manuel d’Oslo qui a fait naître l’idée de l’évolution des rôles potentiels des I&IO, corroboré en ce sens par les Normes de pratique et compétences de l’Association canadienne des infirmières en oncologie/Canadian Association of Nurses in Oncology. Cet article propose de nouveaux rôles pour les I&IO qui sont éclairés par la dynamique de l’information et les soins fondés sur des données probantes. L’adoption de cette innovation diagnostique sert de base à l’incorporation à grande échelle des normes susmentionnées et à un remaniement innovant des soins dispensés par les I&IO

    Prospective roles for Canadian oncology nurses in breast cancer rapid diagnostic clinics

    No full text
    The introduction of rapid diagnostic clinics for breast cancer increases oncology nurses’ (ONs) responsibility for patient education and coordination of multidisciplinary care. Developed as an outcome of the E-Mentorship Oncology Nursing Program, this paper proposes new roles for these nurses to respond effectively and competently to such diagnostic innovation. The Oslo Manual Conceptual Framework of Innovation inspired the idea of change in prospective ONs’ roles, corroborated by the Canadian Association of Nurses in Oncology’s Standards of Practice and Competencies. New roles for ONs that are informed by the domain of information dynamics and evidence-based care are proposed. The adoption of this diagnostic innovation provides a base for the widespread incorporation of the aforementioned standards and redesigned innovative in ONs care

    Performance of a 3 kW wind turbine generator with variable pitch control system

    No full text
    A prototype 3 kW horizontal upwind type wind turbine generator of 4 m in diameter has been designed and examined under real wind conditions. The machine was designed based on the concept that even small wind turbines should have a variable pitch control system just as large wind turbines, especially in Japan where typhoons occur at least once a year. A characteristic of the machine is the use of a worm and gear system with a stepping motor installed in the center of the hub, and the rotational main shaft. The machine is constructed with no mechanical breaking system so as to avoid damage from strong winds. In a storm, the wind turbine is slowed down by adjusting the pitch angle and the maximum electrical load. Usually the machine is controlled at several stages depending on the rotational speed of the blades. Two control methods have been applied: the variable pitch angle, and regulation of the generator field current. The characteristics of the generator under each rotational speed and field current are first investigated in the laboratory. This paper describes the performances of the wind turbine in terms of the functions of wind turbine rotational speed, generated outputs, and its stability for wind speed changes. The expected performances of the machine have been confirmed under real wind conditions and compared with numerical simulation results. The wind turbine showed a power coefficient of 0.257 under the average wind speed of 7.3 m/s.Renewable energy Wind turbine generator Variable pitch control Field current control

    Parents’ Experiences and Sexual Topics Discussed with Adolescents in the Accra Metropolis, Ghana: A Qualitative Study

    No full text
    Background. Traditionally, discussion about sexuality is subdued in proverbs and is earmarked for adults. However, adolescents also need information about their sexuality to make informed choices regarding sexual behaviours. This study, therefore, seeks to explore the experiences of parents discussing sexuality topics with adolescents in the Accra Metropolis, Ghana. Methods. This was a qualitative study that used focus group discussions (FGDs) and in-depth interviews (IDIs) to assess parents’ experiences in discussing sexuality topics with adolescents. The FGDs, consisting of 8-12 parents each, were conducted for one “all fathers”, then another “all mothers”, and finally “fathers and mothers” groups. Parents who were not part of the FGDs were engaged in IDIs. The data was transcribed and analyzed manually. Results. Most of the parent-adolescent sexual discussions were based on physical changes, personal hygiene, abstinence, abortion, and saying “no” to forced sex. Parents discussed sexuality issues with adolescents to prevent them from premarital sex, pregnancy, and sexually transmitted infections. Parents sourced their knowledge about sexuality from books, television, radio, and personal experiences. Parents always seize opportunities such as television scenes to discuss sexual topics with their children. Although some parents expressed some level of comfort discussing sexual topics with adolescents, many still had difficulties explaining some terminologies related to sex. Preferentially, parents were protective of their girls than the boys when discussing issues on sexuality. Most parents received no sexuality education from their parents but a few reminisced precautionary advices on sex. Parents believed training on sexuality issues will help them to better discuss sexual topics with adolescents. Conclusions. Ghanaian parents preferentially discuss sex with their daughters as a protective tool against irresponsible sexual behaviours. Parents still have challenges discussing adolescent sexuality topics; hence equipping parents to effectively discuss such sensitive topics will improve adolescent reproductive health and sexual behaviour
    corecore