Search results for " tanks"

Particle image velocimetry in a gas-sparged stirred tank

2008

Contra el miedo

2007

Typology of think tanks: A comparative study in Finland and Scotland

2021

This paper provides a comparative analysis of current Finnish and Scottish think tanks and reviews how think tanks in these countries have evolved, how think tanks seek to influence decision making and engage with their stakeholders. To address the ways of influence this paper looks how Finnish and Scottish think tanks describe themselves and how they use publications in their advocacy. Conducted content analysis indicates that usually registered association based Finnish think tanks are generally more research-focused organisations, who overall deploy more research publications for advocacy than the company based Scottish think tanks. Findings also reveal that the number of think tanks in …

EXPERIMENTAL INVESTIGATION OF DILUTE SOLID-LIQUID SUSPENSION IN AN UNBAFFLED STIRRED VESSELS BY A NOVEL PULSED LASER BASED IMAGE ANALYSIS TECHNIQUE

2009

The availability of experimental information on solid distribution inside stirred tanks is a topic of great importance in several industrial applications. The measurement of solid particle distribution in turbulent multiphase flow is not simple and the development of suitable measurement techniques is still in progress. In this work a novel non-intrusive technique for measuring particle concentration fields in solid-liquid systems is employed. The technique makes use of a laser sheet, a high sensitivity digital camera for image acquisition and a Matlab procedure for post-processing the acquired images. Experimental data are here obtained for the case of an unbaffled stirred tank. Stable tor…

Análisis de la representación e impacto de los think tanks españoles en la prensa online (2012-2016)

2017

Esta investigación se inscribe en el marco de los estudios nacionales e internacionales en los que se analiza la labor de los «think tanks» como difusores de conocimiento y, al mismo tiempo, como actores sociales que contribuyen a la reforma de las políticas públicas. El estudio se centra en las estrategias comunicativas de los «think tanks» en la prensa online. En la combinación de todas las diferentes estrategias y en una constante adaptación a la situación en la que realizan sus labores estará la clave del éxito para evaluar su influencia y el éxito que tienen en comunicar ideas. Las hipótesis de esta tesis son: H1: Las apariciones de los «think tanks» españoles en los medios online son …

SOLID-LIQUID SUSPENSIONS IN UNBAFFLED TANKS

2009

Unbaffled stirred tanks are seldom employed in the process industry as they are considered poorer mixers than baffled tanks. However, they might provide significant advantages in a wide range of applications like crystallization processes as well as for food and pharmaceutical industries, where the presence of baffles is often undesirable. In the present work solid-liquid suspension in an unbaffled stirred tank was investigated. A novel experimental method (steady cone radius method) was devised to ease the evaluation of the minimum impeller speed for complete particle suspension (Njs). Experiments encompassed a quite wide range of particle sizes, densities and solids concentration. The Njs…