304 research outputs found
Interview with Cedric Boeckx
No full textCedric Boeckx is a Research Professor at the Catalan Institute for Advanced Studies (ICREA), and a member of the Center for Theoretical Linguistics at the Universitat Autònoma de Barcelona. Most recently he was an Associate Professor of Linguistics at Harvard University. He is the author and editor of various books on syntax, minimalism and language (from a biolinguistic perspective). He is also the founding co-editor, with Kleanthes K. Grohmann, of the Open Access journal Biolinguistics. The interview came to fruition after we had the idea of asking various linguists the following question: "What is the right place for linguistics?". At first, we were looking for short, straightforward answers. The question soon proved to be hard to approach that way, and Prof. Cedric Boeckx was kind enough to accept our invitation for a more thorough elaboration on the subject, under the "Interview" section of our journal, which he generously granted us on November 7th, 2011, at the Faculty of Letters of the University of Porto, a day before his "Introduction to Biolinguistics" workshop, also there, and for which we are also very thankful. This text is a virtually word-for-word transcription of the recorded 2-hour long interview, subject only to minor revisions by our editorial team and some comments by the interviewee. We hope that the final result is of interest to students, researchers and people alike
Cedric Dover, April 15, 1948
No full textPortrait of Cedric Dover. Written on recto: For Harold with every good wish, Cedric. Written on verso: The late Cedric Dover, Eurasian at one time on the faculty at Fisk University, and author of the famous book on Negro art, for which Harold Jackman furnished much of the material; Photograph by Carl Van Vechten; 101 Central Park West; Cannot be reproduced without permission; April 15, 1948
CEDRIC J. POWELL
No full textCEDRIC J. POWELL
Inducted: 2010
Citation:
For exceptional scientific and organizational work in establishing the physical basis (and infrastructure) for electron spectroscopies of solids, especially as applied to quantitative surface analysis and surface standards
Tenure: 1962-2006
Birth: 1935; Perth, Australia
Education:
University of Western Australia, BS (Physics), 1956
University of Western Australia, PhD (Physics), 1962
Positions held:
Physicist, Atomic Physics and Optical Physics Divisions, Institute for Basic Standards, 1962-1978
Chief, Surface Science Division, Center for Chemical Physics, 1978-1991
Leader, Surface Spectroscopies and Thin Films Group, Surface and Microanalysis Science Division, 1991-1994
NIST Fellow, Surface and Microanalysis Science Division, 1994-2006
NIST Scientist Emeritus, Surface and Microanalysis Science Division, 2007-Present
Honors:
US Department of Commerce Silver Medal (1983) and Gold Medal (1986)Award of Merit, American Society for Testing and Materials (ASTM) (1988)
Riviere Prize, UK ESCA Users Group (1992)
Creation of Cedric Powell Award by ASTM Committee E-42 on Surface Analysis (1993)
Creation of Powell Prize by the Surface Analysis Society of Japan (1995)
Albert Nerken Award, American Vacuum Society (2001)
Technology Prize, International Union of Vacuum Science, Technique, and Applications (2007)
Memberships:
American Physical Society, American Vacuum Society, American Assn. for the Advancement of Science
ASTM Committee E-42 on Surface Analysis, chairman (1980-85)
Board of Trustees, Gordon Research Conferences (1982-88), chairman (1985-86)
Board of Directors, American Vacuum Society (1988-89)
ISO Technical Committee 201 on Surface Chemical Analysis, chairman (1992-98)
Publications:
Co-editor of 3 books, co-author of 5 NIST databases, and an author of more than 240 publications including:
Powell, C. J., “Contrasting Valence-Band Auger-Electron Spectra for Silver and Aluminum”, Phys. Rev. Letters 30, 1179 (1973)
Powell, C. J., “Attenuation Lengths of Low-energy Electrons in Solids”, Surface Science 44, 29 (1974)
Powell, C. J., “Cross Sections for Ionization of Inner-shell Electrons by Electrons”, Rev. Mod. Phys. 48, 33 (1976)
Powell, C. J. and Seah, M. P., “Precision, Accuracy, and Uncertainty in Quantitative Surface Analyses by Auger-Electron Spectroscopy and X-ray Photoelectron Spectroscopy”, J. Vac. Sci. Technol. A 8, 735 (1990)
Tanuma, S., Powell, C. J., and Penn, D. R., ""Calculations of Electron Inelastic Mean Free Paths. II. Data for 27 Elements over the 50-2000 eV Range,"" Surface and Interface Analysis 17, 911 (1991)
Powell, C. J. and Jablonski, A., “Evaluation of Measured and Calculated Electron Inelastic Mean Free Paths Near Solid Surfaces,” J. Phys. Chem. Ref. Data 28, 19 (1999
The Pharmacological Activities of Glycyrrhizinic Acid (“Glycyrrhizin”) and Glycyrrhetinic Acid
No full textGlycyrrhizin or, more correctly, Glycyrrhizinic acid is a triterpenoid saponin obtained from the root and rhizome extracts of Licorice (Glycyrrhiza glabra), being commonly used as a sweetener, being reported as – at least – 30 times sweeter than sucrose. This natural product, along with its aglycone glycyrrhetinic acid, is known in the literature for its several pharmacological and biological activities. This chapter summarizes the activities reported in the literature for the saponin and its aglycone since 2010.</p
Síntese e avaliação da atividade farmacológica in vitro de aminas derivadas do limoneno
No full textO limoneno é um produto natural da classe dos terpenos, encontrado abundantemente em plantas cítricas e relatado na literatura como um composto com atividades farmacológicas interessantes, entre elas antibacteriana, antifúngica, antileishmania, nociceptiva e citotóxica. A presente tese relata a funcionalização do limoneno utilizando a Síntese Orgânica em Fase Sólida e a Síntese Orgânica Clássica (em solução). A partir da síntese orgânica em solução, especialmente através das reações de hidroformilação e hidroaminometilação, obtiveram-se vinte compostos. Os compostos foram testados para várias atividades farmacológicas in vitro, a saber: antibacteriana, antifúngica, anti-tripanossoma e anti-leishmania. Destes, dezessete foram testados para a atividade anti-leishmania in vitro contra formas promastigotas de L. (V.) braziliensis e sete apresentaram atividade superior ao fármaco pentamidina, utilizado como padrão no teste, com valores de IC50 entre 11,5 e 35,6 μM.Limonene is a natural product from the terpene family, found in great proportions in citrical plants, being reported in the literature as having interesting pharmacological activities, such as antibacterial, antifungical, antileishmanial, nociceptive and citotoxic. This thesis reports the funcionalization of limonene via Solid-Phase Organic Synthesis and classical solution-phase synthesis. Twenty products were obtained from the solution-phase protocols, especially from reactions such as hydroformylation and hydroaminomethylation. The compounds were tested for several pharmacological activities, e.g.: antibacterial, antifungical, anti-tripanossomal and anti-leishmanial. Seventeen of those compounds were tested against in vitro promastigote strains of Leishmania (V.) braziliensis and seven compounds were found to have greater anti-leishmanial activity than pentamidine, the standard drug used in this test, presenting IC50 values ranging from 11,5 to 35,6 μM
New limonene-hybrid derivatives with anti-T. cruzi activity
No full textThe development of hybrid compounds containing limonene- and recognized anti-T. cruzi-heterocycle-frameworks is described. The six new compounds displayed broad antitrypanosomal activities having 5-nitrofuran and 5-nitroindazole derivatives, the best profiles. In addition, a 5-nitroindazole derivative evaluated against a panel of fungi exhibited relevant activities. Knowing that free-radical-production operates as one of the mechanisms of action on these heterocycles, we studied a potential extra-mechanism, membrane-sterols changes. Non-relevant T. cruzi squalene accumulation was observed for any of the tested hybrid-limonene derivatives. © 2010 Bentham Science Publishers Ltd.Fil: Alvarez, Guzmán. Universidad de la República; UruguayFil: Gerpe, Alejandra. Universidad de la República; UruguayFil: Benitez, Diego. Universidad de la República; UruguayFil: Garibotto, Francisco Matías. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto Multidisciplinario de Investigaciones Biológicas de San Luis. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Instituto Multidisciplinario de Investigaciones Biológicas de San Luis; Argentina. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas; ArgentinaFil: Zacchino, Susana Alicia Stella. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto Multidisciplinario de Investigaciones Biológicas de San Luis. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Instituto Multidisciplinario de Investigaciones Biológicas de San Luis; Argentina. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas; ArgentinaFil: Graebin, Cedric Stephan. Universidade Federal do Rio Grande do Sul; BrasilFil: Gomes da Rosa, Ricardo. Universidade Federal do Rio Grande do Sul; BrasilFil: Eifler Lima, Vera. Universidade Federal do Rio Grande do Sul; BrasilFil: González, Mercedes. Universidad de la República; UruguayFil: Cerecetto, Hugo. Universidad de la República; Urugua
Inferring effective field observables from a discrete model
No full textAspin system on a lattice can usually be modeled at large scales by an effective quantum field theory. A key mathematical result relating the two descriptions is the quantum central limit theorem, which shows that certain spin observables satisfy an algebra of bosonic fields under certain conditions. Here, we show that these particular observables and conditions are the relevant ones for an observer with certain limited abilities to resolve spatial locations as well as spin values. This is shown by computing the asymptotic behaviour of a quantum Fisher information metric as function of the resolution parameters. The relevant observables characterise the state perturbations whose distinguishability does not decay too fast as a function of spatial or spin resolution.The author is grateful to Tobias Osborne for discussions leading to this work. This work was supported by the ERC grants QFTCMPS and SIQS, by the cluster of excellence EXC 201 Quantum Engineering and Space-Time Research, and by the research fund of Hanyang University (HY-2016-2237)
The Pharmacological Activities of Glycyrrhizinic Acid (“Glycyrrhizin”) and Glycyrrhetinic Acid
No full textJohn Frazer
No full textJohn Frazer, Professor, trained at the Architectural Association, taught first at Cambridge University and then the AA in the 1970s and again in the '90s. He was Head of School of Design Research History and Criticism at the University of Ulster in the 1980s, he also ran a systems and design consultancy with his wife Julia (including projects for Cedric Price and Walter Segal) and was founder and chairman of Autographics software. He is currently Swire Chair Professor and Head of School of Design in Hong Kong.-----\ud
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This is a very personal perspective on a concept of universal and future significance. It is personal, both is the sense that it is an unashamedly biased view of both the significance of the project, and the nature of that significance and because the author was personally involved as one of the consultants on GENERATOR and subsequently involved Cedric Price in its educational application at the Architectural Association. GENERATOR is still very much alive and was still developing whilst this chapter was being written.\u
Cedric Masey White and his solution to the pipe flow problem
No full text Cedric Masey White is a notable British hydraulician of the twentieth century, having particularly contributed to the pipe flow problem in collaboration with his PhD student Cyril Frank Colebrook. Their solution is currently accepted universally, although some particular questions remain as yet unresolved. This biographical work further introduces the professional background of White during his stays at King's College and Imperial College, London, where he became one of the most renowned British hydraulicians mainly because he introduced the post graduate course in hydraulics after World War II. This work also describes how the author was able to find White's daughter in Canada, and how she kindly gave her support in terms of photographs and biographical details. A well-known figure in the field of hydraulics is therefore finally given acknowledgement by an adequate biography. </jats:p
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