38,702 research outputs found
Dylan Walsh - dance : art, mourning, archive
No full textCet essai envisage le deuil du point de vue d’un homme endeuillé. Sur la base de ma propre expérience de deuil, j’ai questionné les théories freudiennes sur le sujet. Face aux théories derridiennes sur l’archive, je me positionne non pas comme un archiviste professionnel mais comme une personne endeuillée trouvée engagée dans un processus d’archivage. Au regard de la psychanalyse et de l’archive, ce texte n’entend ni ne prétend avancer de nouvelles théories sans prendre en compte leurs histoires respectives. Ce texte propose une étude comparée pour une tentative de définitions à la lumière d’une expérience personnelle. Ces questions seront finalement mises à l’épreuve dans le monument performatif audio-visuel Dylan Walsh – dance.This essay looks at mourning from a mourner’s sentiment. Freud’s mourning theory has provided a concept of how mourning works that I have questioned from the basis of my mourning experience.
In considering Derrida’s archive theory, my position is not as a trained archivist, but as a mourner who has come to engage in the process of archiving. As regards to both psychoanalysis and the archive, this paper does not intend or pretend to advance new theory without taking into account both their respected histories. This paper offers a comparative look, inquiring into the attempts at definitions in light of personal experience, and finally how they reflect in the performative audio- visual monument Dylan Walsh – dance
Dylan Walsh - dance : art, mourning, archive
No full textCet essai envisage le deuil du point de vue d’un homme endeuillé. Sur la base de ma propre expérience de deuil, j’ai questionné les théories freudiennes sur le sujet. Face aux théories derridiennes sur l’archive, je me positionne non pas comme un archiviste professionnel mais comme une personne endeuillée trouvée engagée dans un processus d’archivage. Au regard de la psychanalyse et de l’archive, ce texte n’entend ni ne prétend avancer de nouvelles théories sans prendre en compte leurs histoires respectives. Ce texte propose une étude comparée pour une tentative de définitions à la lumière d’une expérience personnelle. Ces questions seront finalement mises à l’épreuve dans le monument performatif audio-visuel Dylan Walsh – dance.This essay looks at mourning from a mourner’s sentiment. Freud’s mourning theory has provided a concept of how mourning works that I have questioned from the basis of my mourning experience.
In considering Derrida’s archive theory, my position is not as a trained archivist, but as a mourner who has come to engage in the process of archiving. As regards to both psychoanalysis and the archive, this paper does not intend or pretend to advance new theory without taking into account both their respected histories. This paper offers a comparative look, inquiring into the attempts at definitions in light of personal experience, and finally how they reflect in the performative audio- visual monument Dylan Walsh – dance
Alternative tribological coatings to electrodeposited hard chromium: a critical review
No full textThe traditional importance of hard chromium electroplating in surface engineering is recognised and the key features of this well-established technology are summarised. Despite the high hardness, corrosion protection and wear resistance of chromium electrodeposits, a number of alternative coating compositions and application techniques have been developed for specific applications in tribology. Environmental challenges associated with hard chromium electroplating are highlighted and the need to develop and evaluate alternative coatings is stressed. Key examples of the alternative coatings are described, including their method of application, microstructure and tribological performance in controlled service environments. Research needs requiring rapid development are highlighted. A summary is given of the most competitive coatings and those having the potential to match the performance of hard chromium in selected applications are identified
Electrodeposition of nanocrystalline nickel–cobalt binary alloy coatings: a review
No full textThe history of Ni–Co alloy deposits is summarised and recent developments are highlighted. Electrodeposition of nanocrystalline Ni–Co binary alloys and, briefly, Co–Ni–P ternary coatings is considered, including chemical composition, phase composition and crystalline nature. Nanostructure, morphology, physical and mechanical properties (including corrosion resistance) vs bath type and composition (including pH and electrolyte additives) and plating conditions, including current density, temperature and agitation are summarised. Applications range from wear and corrosion resistant coatings, particularly as a hard chromium replacement to speciality hydrogen evolution electrodes in water electrolysis. Following this extensive review, future research needs are briefly listed
Electrodeposition of nanocrystalline nickel and cobalt coatings
No full textThe importance of nanostructured deposits and methods for achieving them are considered. The scope for nickel and cobalt nanocrystalline single metal deposits is summarised and developments in the last decade are highlighted. In each case, chemical composition, phase composition and crystal structure are included. Nanostructure, physical and mechanical properties (including corrosion resistance) v. bath type and composition (including pH and electrolyte additives) together with plating conditions, including current density, temperature and agitation are summarised. While the majority of published studies have featured nickel, the more expensive cobalt has also been considered due to its better corrosion and high temperature oxidation resistance in some environments. An overall comparison between the two metals is made. The major applications of nanocrystalline nickel have been in wear and corrosion resistant coatings, particularly as a hard chromium replacement, but speciality emerging uses include catalytic electrode surfaces in water electrolysis. Future research needs are briefly liste
Variations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Senators Walsh (D-MA) and Lodge Jr. (R-MA) and Mrs. H.S. Braun of Pittsfield, MA
No full textNegative; 4x5; B&WSenator Walsh signs a greeting to President Franklin Roosevelt for his birthday, the others look over his shoulderThis collection was reprocessed in 2010-2011 using funds from a National Historical Publications and Records Commission (NHPRC) Detailed Processing Grant (http://www.archives.gov/nhprc/)
Crystal structure of human kynurenine aminotransferase II, a drug target for the treatment of schizophrenia
No full textThe electrodeposition and characterisation of low-friction and wear-resistant Co-Ni-P coatings
No full textA new Co-Ni-P coating having superior properties to hard chrome coatings for anti-wear applications has been developed by combining the precipitation hardening of Ni-P alloys with the lubricity of cobalt-rich Co-Ni coatings. The evolution of composition andmicrostructure, hardness, thermal stability and tribological properties have been investigated. The local pH value near the cathode played an important role in the change of the microstructure from nanocrystalline to amorphous along the growth direction as the phosphorous content increased from 7 at.% to 26 at.%. The highest microhardness (980 HV) and the lowest wear rate (one order of magnitude lower than that of hard chrome coatings under the same dry sliding conditions) were achieved by annealing the coatings at 400 °C facilitating precipitation hardening. Furthermore, the coefficients of friction of both the as-deposited Co-Ni-P coating and the heat-treated sampleswere approximately 0.3, only half of that of hard chrome coatings. The wear rates of Co-Ni-P coatings annealed up to 400 °C are 4–7 times lower compared to that of hard chrome. The roll-like debris found on the worn surfaces of the coating annealed at 500 °C were oriented perpendicularly to the sliding direction. Such part might be related to the slightly reduced coefficient of friction in the stable stag
The role of a tribofilm and wear debris in the tribological behaviour of nanocrystalline Ni–Co electrodeposits
No full textThe tribofilm and debris generated from wear tests acting as a third body can make important contributions to a tribo-system. The effect of tribofilm on sliding friction and wear depends strongly on the applied sliding conditions, and it is still lack of understanding due to insufficient experimental studies. In the present research, the electrodeposited nanocrystalline Ni–Co coatings with different cobalt content were prepared. The worn surfaces as well as the wear debris were characterised by surface analysis techniques after dry sliding tests against a stainless steel ball. The tribofilms containing iron from the counterparts were formed on the worn surface of the coatings (less than 60 at.% Co), which exhibited high coefficients of friction and wear rates. No tribofilm or iron transfer from the pin was found on the Co-rich coatings (more than 70 at.% Co) but a dramatic friction reduction of 50% and improved wear resistance were experienced. The wear debris contains a mixture of face-centred cubic (fcc) metallic phase and fcc oxidised phase, irrespective of the coating composition. The oxidised debris cannot form an efficient lubricative film to promote separation of the sliding surfaces
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