2,139 research outputs found
Detergency in Liquid CO2
No full textIn this dissertation we study Detergency in liquid Carbon Dioxide. Detergency is the cleaning performance of additives, surfactants in particular, in washing fluids. Liquid CO2 is under consideration, for environmental and toxicological reasons, to replace perchloro-ethylene as the solvent in textile dry cleaning technology. Inherent problems of such a transition were confronted with the methodology of chemical engineering design. The Basic Cycle of Design (BCD) approach was used as a pathway for designing a detergent. The BCD also establishes the structural framework of the thesis, which can, therefore, be read as records from a successful product engineering project, in which an effective detergent has been designed for a new dry cleaning solvent. The Dynamic Detergency Model (DDM), which succeeds to explain the role of surfactants in the washing operation, is used as a rational starting point for the design of a detergent in liquid CO2. According to this model, such a surfactant must be: sparingly soluble in the solvent, surface-active and able to form micelles in the solution. The different experiments carried out (solubility, interfacial-tension and dye solubilisation measurements), show that a number of molecules of the homologous polyoxyethylene/alkane series, generally described by the shorthand formula CiEj did indeed behave as surfactants and can be then considered detergents for liquid CO2. In the technical evaluation of the detergents, at laboratory as well as at semi-pilot scale, high washing performances were obtained. They are, indeed, as good for dry cleaning textiles as the present perchloro-ethylene (Perc) technology.Applied Science
Chasing dolphins A preliminary report on the failure of existing legislation to protect whales and dolphins from harassment and injury in UK waters
No full textContributions from Mark Simmonds, Linda Hingley, Colin Wood and othersAvailable from British Library Document Supply Centre-DSC:m00/35336 / BLDSC - British Library Document Supply CentreSIGLEGBUnited Kingdo
'Her Irish Heritage' : Annie M.P Smithson and autobiography
No full textThis paper examines some aspects of the work of Annie M.P. Smithson, the author of 21 romance novels between 1917 and 1946. Her attitudes towards women, religion and politics are explored, and the importance of autobiography in her fiction discussed.Cet article analyse divers aspects de l'oeuvre d'Annie M.P. Smithson, l'auteur de vingt et un romans 'romanesques' publiés entre 1917 et 1946. Il étudie son attitude concernant les femmes, la religion, la politique, ainsi que le rôle de l'autobiographie dans sa fiction.Walsh Oonagh. 'Her Irish Heritage' : Annie M.P Smithson and autobiography. In: Études irlandaises, n°23-1, 1998. pp. 27-42
Holoturian, Ariel Guzik
No full textFor the last 10 years, artist Ariel Guzik has searched for a way to communicate with whales and dolphins. Guzik’s project has encompassed the creation of underwater instruments, expeditions to contact whales and dolphins off the coasts of Baja California, Costa Rica and Scotland, and sound recordings of these remarkable encounters.
Guzik's Holoturian was a new work commissioned by Arts Catalyst and Edinburgh Art Festival in 2015. It was an installation of a new underwater resonance instrument, specially designed to communicate with whales and dolphins in the deep seas, and incorporated objects, drawings and films from the artist’s decade-long research project, which included a field trip by the artist and his team with Arts Catalyst to the Moray Firth in the North of Scotland to encounter the population of bottlenose dolphins that live there.
This new book records the project to date and explores the ideas underlying it, bringing together artistic, scientific and environmental reflections on Guzik’s work, the language and culture of cetaceans, and the challenges facing these intelligent creatures in our threatened oceans today.
It comprises images of the research and installation with texts by curator Nicola Triscott and marine scientist and conservationist Mark Simmonds OBE
Il ruolo della linguistica in un'iniziativa di internazionalizzazione
No full textThe author deals with the role of linguistic sciences and language teaching in the internationalization project of an e-learning Specialization Course
The influence of steady blowing and roughness on transitional separated boundary layers
No full textThis paper presents the results of a study between two types of forcing, namely steady blowing and a tripwire, on the control of laminar separated boundary layers. The analysis focuses on the differences in the transition process between these two types of forcing. This effect will be studied using direct numerical simulation. The main differences consists in the coherent structures formed during transition and the overall kinetic energy growth
Gusmani grecista
No full textThe author deals with the Roberto Gusmani's works about Ancient Greek language
Skin-Friction Measurements on Mathematically Generated Roughness in a Turbulent Channel Flow
No full textEngineering systems are affected by surface roughness, however, predicting frictional drag has proven to be challenging. The present work takes a systematic approach by generating and manufacturing surfaces roughness where surface statistics, such as rms, skewness and power-spectral density can be controlled. The frictional drag on these surfaces is measured in a turbulent channel flow facility
Impressions: Whales and Human Relationship in Myth, Tradition and Law
No full textThe predicament of whales and whaling provides a focus for very different perspectives and a battle ground for a range of epistemic groups that are shaped and informed by multiple influences: myths, traditions, heritage, practices, ethics, laws and aspects of knowledge. These different perspectives are guarded and reinforced and provide the basis for validation of each group’s political stance within the International Whaling Commission and other regulatory fori dealing with the predicament of whales. In this chapter samples of these perspectives are examined as they relate particularly to controversial aspects of polar whaling where a low-key battle has been fought for some years now albeit with sporadic skirmishes rather than constant fighting. A key area for conflict is the granting by the IWC of aboriginal subsistence exemptions for whaling. Specific questions may be extracted from the political haze that beleaguers whaling politics. These include the need to define the meaning of “aboriginal” in the context of the loss of traditions and the developmental transitions of indigenous people and the need to determine the extent to which traditional whaling may cross-over from the status of "subsistence" to "commercial" . By examining aspects of the root perspectives and influences that relate to these questions it is hoped that some meaning may be discerned which may contribute to shortening, if only by minutes, the long days spent debating the fate of the great whales
El defensor del vínculo en las causas de nulidad matrimonial tras el m.p. Mitis Iudex
No full textCapítulos en librosLa autora estudia el rol del defensor del vínculo tras la reforma de los procesos canónicos de nulidad matrimonial introducida por el motu propio Mitis Iudex Dominus Iesus, del papa FranciscoThe author studies the role of the Defender of the Bond after the reform of the Canonical process for the declaration of the nullity of marriage, made by the m.p. of Pope Francis, Mitis Iudex Dominus Iesusinfo:eu-repo/semantics/publishedVersio
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