1,963 research outputs found
Grace E. Riddell demonstrates the electroplating process at NBS
No full textStandard electroplating equipment in the electroplating laboratory at the National Bureau of Standards. The apparatus, consisting of switchboard, battery, electrodes, lead wires, and solution, is more elaborate than that used in electroless plating. Grace E. Riddell was a chemist at the National Bureau of Standards from 1943 -1948. She worked with Abner Brenner during World War II and after.
Photo Source: Grace E. Riddell Collection (NIST Archives Collection #019
Di storie e di spettri irlandesi
No full textPrefazione al volume "Nut Bush Farm" di Charlotte Riddell, tradotto in italiano da Elizabeth Harrowell
Measuring Unemployment and Structural Unemployment
No full textThis paper surveys recent research on how to measure labour market activities such as unemployment and labour force participation. The conventional approach to distinguishing between unemployment and non-participation is to use a priori reasoning and self-reported survey responses about current activities, specifically availability for work and job search. In contrast, the research surveyed here employs evidence on the subsequent consequences of current activities, in particular on transitions among labour force states. This general approach appears to be a promising method for bringing evidence to bear on these difficult measurement issues.
Grace E. Riddell demonstrates electroless plating
No full textNickel plating on a steel strip without the use of electric current by means of a new process developed at the National Bureau of Standards. This process, known as electroless plating, produces a high-purity adherent coating of nickel or cobalt on metal surfaces. It involves the chemical reduction of a nickel or cobalt salt with hypophosphite through the catalytic action of the metal upon which deposition occurs. The equipment, consisting of glass vessel, solution, and immersion heater (projecting from the bath), is simpler and more easily set up than that required for electroplating. Grace E. Riddell was a chemist at the National Bureau of Standards from 1943 -1948. She worked with Abner Brenner during World War II and after.
Photo Source: Grace E. Riddell Collection (NIST Archives Collection #019
‘Now—for a breath I tarry’: Breath, Desire, and Queer Materialism at the fin de siècle
No full textRiddell explores how tropes of breath and breathlessness articulate the relationship between materiality, desire, and loss for queer subjects in Victorian literature. The essay presents readings of A. E. Housman’s A Shropshire Lad, John Addington Symonds’s Memoirs, and Walter Pater’s ‘Sebastian van Storck’ (from Imaginary Portraits). It also examines nineteenth-century sexology (including writings by Magnus Hirschfeld) to demonstrate how certain modes of breathing were directly associated with non-normative sexuality in the period. Riddell draws upon insights from contemporary queer theory, in its turns toward negative affect and phenomenology, to examine precarious forms of embodied subjectivity in the history of homosexuality. By doing so, he demonstrates how experiences of embodiment are never universal but closely bound up with individual subject positions (such as sexuality and gender)
Extinct muskox and other additions to the Late Pleistocene Riddell Local Fauna, Saskatoon, Canada
No full text Fossils recently recovered from the Riddell Member of the Floral Formation, a richly fossiliferous intertill sand and gravel deposit in the Saskatoon area, include taxa previously unknown from the Riddell Local Fauna and confirm the presence of others. Bootherium bombifrons (= Symbos cavifrons), represented by a well-preserved but incomplete skull, is new. Details of its preserved morphology support concepts of developmental variability and sexual dimorphism in the extinct species. Also new is the beaver, Castor canadensis, represented by an incomplete ulna. Additional fossils of horses indicate that at least two species, Equus niobrarensis, as well as the previously identified E. conversidens, were present. A Rancholabrean age (probably Rancholabrean II) for the fauna is confirmed by the presence of Bootherium bombifrons, a muskox known only from Illinoian and younger time in North America, but lithologic and stratigraphic relationships of tills and ecological requirements of the fauna limit the Riddell Member to the Sangamonian. Disharmonious associations of small mammals and high megafaunal diversity are consistent with the emerging picture of Pleistocene ecosystems as highly co-evolved and heterogeneous and without modern analogs. </jats:p
The Early Career of John L. Riddell as a Science Lecturer in the 19th Century
No full textAuthor Institution: Department of Biological Sciences, Kent State UniversityJohn Leonard Riddell (1807-1865), trained in science, especially botany and geology, by Amos Eaton at the Rensselaer School at Troy, New York, became a professional itinerant science lecturer. He began in Ogdensburg, New York, then in Philadelphia, Pennsylvania, with lectures on chemistry and physics. From 1832 to 1836 he concentrated his efforts in Ohio, focusing his lectures on botany, particularly medical botany, chemistry, geology, and electricity. He continued his botanical studies, including the collection of plant specimens, and studied medicine, obtaining an M.D. degree from Daniel Drake's School, the Medical Department of the Cincinnati College. After departing Ohio to teach chemistry at the Medical College of Louisiana in New Orleans, he published and lectured on science fiction based on fancied documentation from a presumed former student, Orrin Lindsay, at Cincinnati. Riddell was an early 19th century science lecturer, field botanist, and author of science fiction
Differences in the acute effects of aerobic and resistance exercise in subjects with type 2 diabetes: Results from the RAED2 randomized trial - Note in: Riddell et al., Physical activity and exercise
No full textThe article "Physical Activity and Exercise" (Riddell et other, 2014) presents a selection of nine articles, published between July 1, 2012 and June 30, 2013, aimed at refining the exercise prescription for patients of all age, with the main types of diabetes (gestational, type 1 and type 2). Among these is an extended abstract of the article "Differences in the acute effects of aerobic and resistance in people with type 2 diabetes: Results from the RAED2 randomized trial. (Bacchi, 2012) which investigates the differences between aerobic exercise and of resistance for patients with type 2 diabetes.Note in: Riddell, Michael; Pollack, Sophie; Shojaei, Homadis; et al., Physical activity and exercise - DIABETES TECHNOLOGY & THERAPEUTICS Volume: 16 Supplement: 1 Pages: S92-S99 Published: FEB 1 201
Educationalist working in urban areas
No full textThis submission provides a commentary on thirteen of Richard Riddell’s publications between 1999 and 2010. It explains the professional and policy contexts from the early 1990s onwards, when the author was a senior Local Authority officer, which gave rise to the thinking behind the first phase of his publications. These included the development of a bespoke school improvement process, deeply rooted in the context of the communities served by a school, and involving the development of an urban pedagogy and curricula. The centre piece of this phase was Schools for Our Cities (Riddell, 2003b). Attention then moved for phase 2 of the publications towards the social processes outside school that advantage middle class children within it. Research for this phase identified a managed model of social reproduction being operated by middle class families with children at independent schools, and an independent school/prestigious university nexus. Policy interventions of the 2000s might have begun to create analogous kinds of social processes for working class children, but they are no longer in place. The central piece for phase 2 was Aspiration, Identity and Self-Belief (Riddell, 2010)
- …
