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Jornais Acesso aberto

Clive Coleman, Ron Osmond, Stuart Bridge, Stephen Cretney, Andrew Billen, Robert Cole, Gary Duncan and Robert Thomson, Andrew Pierce, CAH, Nathan Williams, Adam Sherwin Media Reporter, Tom Dyckhoff, Alexandra Blair, Peter Lansley, Adam LeBor Central Europe Correspondent, Kathy Burke, Mark Souster, Linda Tsang, D. J. Bentley, Richard Beeston, David Charter and Michael Evans, Philip Howard, Hilary Finch, David Chater, James Bone, Clive Davis, Richard Hobson One-Day Cricket Correspondent, Roger Iredale, Sam Marlowe, Ton Baldwin, James Hider, Joe Joseph, Ben Webster Transport Correspondent, Robert Gore-Langton, R. H. Tucker, Dominic Walsh, Jill Dupleix, Tim Reid, Dalya Alberge Arts Correspondent, Jane Clarke, Libby Purves, Alan Hamilton, Jon Davey, Henry Adams, Anatole Kaletsky, John Turley, John Harman, Chairman, Ian MacKinnon, Michael Glover, Stefanie Marsh, Bronwen Maddox Foreign Editor's Briefing, Ollver Kay, Hugo Rifkind, Martin Spiro, Russell Kempson, Edward Fennell, Oliver Kay, Christine Selb, Nigel Scotland, Jean Akroyd, Richard Beeston, Michael Evans and David Charter, Michael Theodoulou, Rick Broadbent, Patrick Hosking Investment Editor, Jim Soar, Tonbridge, Kent, Jill Sherman Whitehall Editor, Sam Coates, Mark Henderson Science Correspondent, John Hopkins, Sam Weller, Ann Treneman, Simon de Bruxelles, R. V. Taylor, David Powell Athletics Correspondent, Raymond Keene, Valerle Elliott Countryside Editor, Christine Buckley Industrial Editor, Elizabeth Freeman, Sean O'Neill, Abigall Rayner, Sarah Butler and Christine Seib, Martin Garrod, Iain Murray, Chris Campling, Derrick Francis, E. Michael Sedgwick, Molly Hewett, Helen Nugent, Richard Owen, David Scott, Lee Miller, Roger Boyes, Gabriel Rozenberg Economics Reporter, Nick Hasell, Christine Seib and Jill Sherman, Shami Chakrabarti, David Hands Rugby Correspondent, Owen Slot Chief Sports Reporter, Tom Dart, Paul Simons, Adam Fresco, Jean Bryant, John Allison, Mike Mulvihill, Richard Irving and Tom Bawden, Joanna Pitman, Tosin Sulaiman, Craig Lord, Maureen Paton, Anjana Ahuja, George Caulkin, Bruce Anderson, Martin O'Neill, Alan Lee, Peter Riddell, Michael Gove, Richard Browne, David H Walton, Mark Henderson, Martin Waller, Chris Ayres, Bob Bury, Alan Hamilton and Paul Simons, Tom Bawden and Sarah Butler, Carl Mortished International Business Editor, Laura Peek, Sarah Butler, Bruce Bishop, Ashling O'Connor, Stephen Cragg, C J Brougham, Stephen Dalton, Nicola Woolcock, Leo Lewis, Bill Edgar, Frank Field, Jenny Davey, Andrew Robsen, Edward Gorman Sailing Correspondent, Sam Lister Health Correspondent, Patience Wheatcroft, Joe Bolger, Daphne Watkins, Juliet Barratt, Tim Ripley,

... on January 30, 2005, aged 93 Lives Remembered Donald Pederson Pioneer in the development of the computer chip on which most modern technology depends Donald Pederson, electronics engineer, was born on September 30, 1925. ...

2005 - Gale Group | TDA

Artigo

Carls S. Pederson, Donald K. Tressler,

... RETURN TO ISSUEPREVArticleNEXTFlash Pasteurization of Apple JuiceCarls S. Pederson and Donald K. TresslerCite this: Ind. Eng. Chem. 1938, 30, ...

Tópico(s): Potato Plant Research

1938 - American Chemical Society | Industrial & Engineering Chemistry

Jornais Acesso aberto

Giles Smith, Richard Mabey, Andrew Robson, Janice Turner, Christina Hardyment, Cath Urquhart, Raymond Snoddy Media Editor, George Galloway, Andrew Pierce, Nigel Colborn, Dr Thomas Stuttaford and Suzi Godson, Jane MacQuitty, Antonla Senior, Adam LeBor Central Europe Correspondent, Simon Hills, Robert Thicknesse, Yvonne Gilford, Dominic Dramgoole, Dave Hepworth, Mark Souster, John Mulvey, Clare Lazaro, Joe Bolger and Elizabeth Judge, Dr Toby Murcott, Philip Howard, Major Galleries, Camilla Cavendish, Jonny Wilkinson, Simon Jones, Christine Seib, Michael Binyon, James Bone, Steven Callow, Christian Lindberg, Nic Hopkins, Rachel Campbell-Johnston, Clive Davis, Kate Reardon, CC, Lucia Van Der Post, GS, Patrick Barkham, Roger Maynard, Jenny Knight, Adam, Ask Aggie, Geoff Brown, Andrew Norfolk, Giles Coren, Tom Baldwin, Stephen Farrell and Roland Watson, David Sharrock, Alastair Campbell, Antonia Senior, Ruth Gledhill, Stephen Farrell and Gabriel Rozenberg, Nancy Durrant, Nic Hopkins and Russell Hotten, Valerie Elliott, Donald Hutera, Rob Cassy, John Hopkins, Golf Correspondent, Angus MacLeod Scottish Political Correspondent, Edward Green, Michael Lazarus, Claudio Ranieri, Jack Malvern, Dominic Walsh, Katherine Swift, Yinny Lee, Debra Craine, Anthony Browne and Charles Bremner, Rory Watson, Barbara August, Greg Watts, Joe Morgan, Grainne Gilmore, Tim Reid, Daniel Finkelstein, Dr Jane Collins, Dan Sabbagh, Nori Starck, Peter Ackroyd, Simon Beckett and Gavin Smith, Candida Crewe, Jo Morris, Alan Hamilton, Robin Young, Stephen Farrell, Oliver Wright Health Correspondent, Nicholas Roe, Nicole Pederson-McKinnon, Julian Hofmann, Nick Wyke, Doctor Copperfield, Gerry Hanson, Rwanda, Rhys Blakely, Roland Watson, Sorrel Downer, Peter Davies, John Law, Alan McMurray, David Hands, Tina Gaudoin, Leo Lewis and Robert Thomson, Martin Symington, Matt Dickinson Chief Football Correspondent, Alan Lee, Racing Correspondent, Will Lawrence, Tim Teeman, Nicholas Wapshott, J. G. C. Cox, Matthew Pinsent, Caroline Merrell Banking Correspondent, Patience Wheatcroft Business Editor, Derwent May, Anne Petch, Nadia Raafat, Arwa Haider, Michael Odell, Tom Petherick, Fran Abrams, Paula Hawkins, Guy Perkins, Peter Paphides, Mary Gold, Tony Halpin Education Editor, Simon Midgley, Oliver Kay, Norman Giller, Jeffrey Podolsky and Mike Persson, Quentin Howard, Stephen Anderton, Amber Cowan, Ed Potton, Carola Long, Sarah Vine, Mark Atherton, Lisa Armstrong, John Westerby, Michael Theodoulou, Rick Broadbent, Sam Coates, Chris Power, Neel Mukherjee, Neil Harman, Tennis Correspondent, B. W. Ribbons, Ann Treneman, Simon de Bruxelles, Rob Wright, Christopher Martin-Jenkins, Chief Cricket Correspondent, Amanda Platell, Nice, Gabriel Rozenberg, Sam Clarke, Robert Cowley, Marcus Binney, Raymond Keene, Suzi Godson, Katie Jones, Oliver Wright and Simon Crompton, Rod Liddle, Richard Brass, Gordon Ramsay, Philip Stott, Peter Stothard, Paul Wilkinson, Chris Partridge, Xan Rice, Darinda McCann, Jeremy Page, Chris Campling, Cathy Harris, Richard Owen, Helen Nugent, Alex Hawkes, Mick Hume, Roger Boyes, Peter Dixon, Graham Searjeant Personal Investor, S. E. Harris, Rod Symmons, Victoria O'brien, John Meadowcroft, (Research Fellow), Paul Simons, Ccenevieve Fox, Adam Fresco, V. V. Rajan, Andrew Clennell, Nick Szczepanik, Dominic Kennedy, David G. Guild, John Goodbody, Joanna Pitman, Tosin Sulaiman, Robert Crampton, Stephen Garnett, Simon De Bruxelles, Alan Jackson and Mitch Jenkins, Roderick Strange, Matthew Parris, Virginia Blackburn, Anthony Arkell, Mike Rosewell, Adrian Perry, Amanda Craig, George Caulkin, Chris McGrath, Jonathan Rendall, John Lister-Kaye, Russell Jenkins, Ingrid Mansell, Michael Austin, Celia Dodd, Sheila Keating, Iain Finlayson, Rebecca Ley, Keith Blackmore, Peter Sanford, Ben MacIntyre, DC, Helen Pridham, Comelia Fenton, Tony Dawe, David Charter Chief Political Correspondent, Michael Dynes, Alison Gibson, Jack Malvern Arts Reporter, Richard Miles, John Naish, Lea Paterson, Anne Ashworth Personal Finance Editor, Hattie Ellis, Gary Duncan Economics Correspondent, Martin Waller, Mark Henderson, Chris Ayres, Michael Horsnell, Perry Cleveland-Peck, Carl Mortished International Business Editor, Nigel Hawkes Health Editor, Christopher Warman, Sarah Butler, Benedict Nightingale, Darian Leader, Angus Batey, Jonathan Meades, Bob Almond, Senior Minister, Lindsay Duncan, Jill Crawshaw, Stephen Dalton, Richard Morrison, Bill Edgar, Tom Chesshyre, Jarvis Cocker, James Christopher, Paul Connolly, Glen Owen and David Charter, Greg Hurst and Anthony Browne, Abigail Rayner, Simon Crompton, Suart Miles, Owen Slot, Murray John, Cath Urquhart Travel Editor, A. T. Lee, Kim Newman, Sharon Krum, Hoummos, Jenny Davey, Daphne Lockyer, David Hands, Rugby Correspondent, Christopher Irvine, Irma Kurtz, Chloe Bryan-Brown, Hillary Finch,

... to follow, especially if he's your grandad. Donald Hutera meets a brother and sister with magic ...

2004 - Gale Group | TDA

Artigo Revisado por pares

Donald P. Pederson, O Secher,

... 169-179 HALOTHANE ANAESTHESIA IN CARDIAC SURGERY Donald Pederson, Donald Pederson Department of Anaesthesiology (Head: Ole Secher), Rigshospitalet ( ... Search for more papers by this author Donald Pederson, Donald Pederson Department of Anaesthesiology (Head: Ole Secher), Rigshospitalet (University ...

Tópico(s): Acupuncture Treatment Research Studies

1958 - Wiley | Acta Anaesthesiologica Scandinavica

Artigo Revisado por pares

Chelsea Pederson, Donald F. McNeill, James S. Klaus, Peter K. Swart,

Abstract Microbially mediated carbonates form in numerous environments and produce a range of lithologic fabrics and textures. While the environmental and biological factors controlling microbial carbonate precipitation are becoming more established, the influence of precursor microbial textures on diagenetic processes is less understood. Here we describe microbial oncolites from Mare, New Caledonia, to assess their formation, textures, and subsequent diagenetic alteration. Calcified filaments and ...

Tópico(s): Coral and Marine Ecosystems Studies

2015 - Society for Sedimentary Geology | Journal of Sedimentary Research

Artigo Acesso aberto Revisado por pares

Stephan G. Bullard, Gretchen Lambert, Mary R. Carman, Jarrett E. K. Byrnes, Robert B. Whitlatch, Gregory M. Ruiz, Rudolph J. Miller, Larry G. Harris, Page C. Valentine, Jeremy S. Collie, Judith Pederson, Donald C. McNaught, A. N. Cohen, R.G. Asch, Jennifer A. Dijkstra, Kari Heinonen,

Didemnum sp.A is a colonial ascidian with rapidly expanding populations on the east and west coasts of North America.The origin of Didemum sp.A is unknown.Populations were first observed on the northeast coast of the U.S. in the late 1980s and on the west coast during the 1990s.It is currently undergoing a massive population explosion and is now a dominant member of many subtidal communities on both coasts.To determine Didemnum sp.A's current distribution, we conducted surveys from Maine to Virginia ...

Tópico(s): Marine and coastal plant biology

2006 - Elsevier BV | Journal of Experimental Marine Biology and Ecology

Artigo Acesso aberto Revisado por pares

Mary Jo LaDu, Terry M. Pederson, Donald E. Frail, Catherine A. Reardon, Godfrey S. Getz, Michael T. Falduto,

Apolipoprotein E (apoE), particularly the e4 allele, is genetically linked to the incidence of Alzheimer' disease. In vitro, apoE has been shown to bind β-amyloid (Aβ), an amyloidogenic peptide that aggregates to form the primary component of senile plaques. In previous work, we demonstrated that apoE3 from tissue culture medium binds to Aβ with greater avidity than apoE4 (LaDu, M. J., Falduto, M. T., Manelli, A. M., Reardon, C. A., Getz, G. S., and Frail, D. E. (1994) J. Biol. Chem. 269, 23403-23406). ...

Tópico(s): Nuclear Receptors and Signaling

1995 - Elsevier BV | Journal of Biological Chemistry

Artigo Revisado por pares

Cindy R. Rauschenberger, Scott B. McClanahan, Ernest D. Pederson, Donald W. Turner, E. Kaminśki,

Polymorphonuclear neutrophils (PMNs) are found in dental pulp secondary to carious exposures, periodontal disease, or trauma. Lysosomal degranulation of these cells liberates cellular proteases, including elastase (PMN-E) and cathepsin-G (PMN-CG), which produce connective tissue degradation. However, nonspecific pulpal tissue destruction can be modified by a naturally occurring serum protease inhibitor α 2 -macroglobulin (A 2 -M). This study relates the concentrations of human PMN-E, PMN-CG, and A 2 -M ...

Tópico(s): Protease and Inhibitor Mechanisms

1994 - Elsevier BV | Journal of Endodontics

Artigo Acesso aberto Revisado por pares

J. T. Dickinson, S. C. Langford, L. C. Jensen, P. A. Eschbach, L.R. Pederson, Donald R. Baer,

In previous work we examined the changes in surface topography of sodium trisilicate glass (Na2O⋅3SiO2) with exposure to pulsed 248-nm excimer laser light at fluences of 2.6–5 J/cm2 (per laser pulse), as well as the character of the products emitted from the glass surface (e.g., ± ions, electrons, ground state and excited neutral atoms and molecules). At fluences above a threshold, ablative etching occurs only after a number of preliminary laser pulses. In this work, we show a dramatic synergism in the ...

Tópico(s): Laser-induced spectroscopy and plasma

1990 - American Institute of Physics | Journal of Applied Physics

Artigo Revisado por pares

L.R. Pederson, Donald R. Baer, G.L. McVay, Mark Engelhard,

Soda lime silicate galss was leached in D182O at 25, 50, and 90°C up to 500 h and was examined using non-resonant nuclear reaction and Rutherford Backscattering analysis. Replacement of sodium by deuterium (D/Na = 2.3 ±0.5) was consistent with earlier results, which have been cited as support for an ion-interdiffusion leaching mechanism. However, uptake of 18O was in excess of D (18O/D = 1.6±0.3), with 18O penetrating to depths as great as those from which Na was extracted. Results indicate extensive hydrolysis ...

Tópico(s): Mineralogy and Gemology Studies

1986 - Elsevier BV | Journal of Non-Crystalline Solids

Artigo

Christopher G. Pederson, Donald M. Friedrich, Chang Hsiung, Marc von Gunten, Nada A. O’Brien, Henk‐Jan Ramaker, Eric van Sprang, M. W. Dreischor,

While significant progress has been made towards the miniaturization of Raman, mid-infrared (IR), and near-infrared (NIR) spectrometers for homeland security and law enforcement applications, there remains continued interest in pushing the technology envelope for smaller, lower cost, and easier to use analyzers. In this paper, we report on the use of the MicroNIR Spectrometer, an ultra-compact, handheld near infrared (NIR) spectrometer, the, that weighs less than 60 grams and measures < 50mm in diameter ...

Tópico(s): Advanced Chemical Sensor Technologies

2014 - SPIE | Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE

Artigo Acesso aberto Revisado por pares

Juan Francisco Díaz, V C Hachinski, Linda L. Pederson, A. Donald,

Hypertension, heart disease, and diabetes are not only the major risk factors for stroke, but they tend to cluster in families. It is unknown, however, whether these conditions occur more frequently among relatives of patients with specific types of stroke as compared to non-relatives. The frequencies of stroke and its major risk factors in two groups of subjects were compared. One group consisted of 76 siblings of 41 patients hospitalized with cerebral infarction and transient ischemic attacks ...

Tópico(s): Acute Ischemic Stroke Management

1986 - Lippincott Williams & Wilkins | Stroke

Artigo Revisado por pares

L.R. Pederson, Donald R. Baer, G.L. McVay, Kim F. Ferris, Mark Engelhard,

Etude de la reaction de verres de composition: Li 2 O•2SiO 2 , Na 2 O•3SiO 2 , K 2 O•3SiO 2 , 5Na 2 O•Al 2 O 3 •14SiO 2 et 5Na 2 O•3Al 2 O 3 •12SiO 2 avec de l'eau marquee isotopiquement (D 2 18 O)

Tópico(s): Luminescence Properties of Advanced Materials

1990 - Society of Glass Technology | Physics and chemistry of glasses

Artigo

Ira H. Bernstein, Ned N. Pederson, Donald L. Schurman,

Tópico(s): Color perception and design

1972 - American Psychological Association | Journal of Experimental Psychology

Artigo Acesso aberto Revisado por pares

Hyun‐Na Koo, Jong‐Cheon Joo, Kyung-Yo Kim, Nyeon‐Hyoung An, K.M. Lee, Hyung‐Min Kim,

... S21– S30. Diaz J.F., Hachinski V.C., Pederson L.L. and Donald A., (1986). Aggregation of multiple risk factors for ...

Tópico(s): Healthcare and Venom Research

2003 - BioMed Central | Hereditas

Artigo Revisado por pares

Michael S. Clinton, Richard S. Sepka, David G. Bristol, William C. Pederson, William J. Barwick, Donald Serafín, Bruce Klitzman,

... P.A.-C.; Bristol, David D.V.M.; Pederson, William C. M.D.; Barwick, William J. M.D.; Serafin, Donald M.D.; Klitzman, Bruce Ph.D. Durham and ...

Tópico(s): Transplantation: Methods and Outcomes

1991 - Lippincott Williams & Wilkins | Plastic & Reconstructive Surgery

Artigo

T.S. Perry,

The paper presents a biography of the father of the SPICE program and driving force behind the development of IC simulation who will receive the 1998 IEEE medal of honor.

Tópico(s): Experimental Learning in Engineering

1998 - Institute of Electrical and Electronics Engineers | IEEE Spectrum

Artigo Revisado por pares

Steven R. Montgomery, Mary J. Miller, Ratnakar R. Neurgaonkar, William W. Clark, J.M. Yarrison-Rice, Donald O. Pederson, Gary L. Wood, Edward J. Sharp, Gregory J. Salamo,

Self-pumped phase conjugation has been observed at selected laser wavelengths over the range 647–780 nm. Phase-conjugate reflectivities as great as 20% were measured for power levels ranging from 2 to 100 mW. In addition, phase-conjugate and beam-fanning response times were also measured. Our observations were carried out in crystals belonging to the tungsten-bronze family; these crystals were doped with cerium at the 9-fold coordinated lattice sites to give a red photorefractive response.

Tópico(s): Advanced Fiber Laser Technologies

1988 - Optica Publishing Group | Journal of the Optical Society of America B

Artigo Revisado por pares

Jefferson F. Ray, Ben Lawton, William O. Myers, William M. Toyama, Cesar N. Reyes, Dean A. Emanuel, John L. Burns, Donald P. Pederson, William V. Dovenbarger, Frederick J. Wenzel, Richard D. Sautter,

Four hundred and sixteen open pulmonary biopsies through limited thoracotomies are reported. Tissue sufficient for diagnosis was obtained in all cases. Case selection, operative technique, spectrum of diagnoses, complications, and comparisons with other techniques are defined. Diagnoses by category were as follows: occupational, 105 patients (25 percent); neoplastic disease, 80 patients (19 percent); specific histologic diagnosis, (ie, sarcoidosis), 70 patients (17 percent); specific infection, 23 patients ( ...

Tópico(s): Lung Cancer Diagnosis and Treatment

1976 - Elsevier BV | CHEST Journal

Artigo Revisado por pares

E.S. Kuh, Donald O. Pederson,

This chapter discusses physics and applications of Metal-Insulator-Semiconductor (MIS). The basic structure of MIS diode has been shown. The surface states as well as differences in the work functions between metal and semiconductor have secondary significance in high-frequency applications, and, therefore, have been taken into account. The chapter considers the range over which MIS varactors may be driven and the surface effects have been treated in enough detail to at least estimate and put limits ...

Tópico(s): Embedded Systems Design Techniques

1959 - Elsevier BV | Journal of the Franklin Institute

Artigo Acesso aberto

Katherine Olstein,

... of Robert Meyer as recipient of hte 2014 Donald O. Pederson Award.

2014 - Institute of Electrical and Electronics Engineers | IEEE Solid-State Circuits Magazine

Artigo Revisado por pares

Chelsea Pederson, James S. Klaus, Peter K. Swart, Donald F. McNeill,

Abstract Microbial carbonate mud in the modern (<4 kyr) palustrine environment of the Florida Everglades is surprisingly susceptible to early diagenetic alteration. The low‐Mg calcite crystals show an open, trellis‐like crystal structure that yields a high surface area to volume ratio. This textural complexity, likely to be a result of organic influence, leads to abundant reaction sites vulnerable to both dissolution and subsequent precipitation. Rapid degradation of organics is attributed to both ...

Tópico(s): Geology and Paleoclimatology Research

2018 - Wiley | Sedimentology

Artigo Revisado por pares

Nancy E. Gillette, Nadir Erbilgin, Jeffrey N. Webster, Lee Pederson, Sylvia R. Mori, John D. Stein, Donald R. Owen, K.M. Bischel, David L. Wood,

We tested a new formulation of verbenone, an antiaggregation pheromone of the mountain pine beetle (Dendroctonus ponderosae Hopkins) (Coleoptera: Curculionidae: Scolytinae), for area-wide protection of lodgepole pine (Pinus contorta Douglas ex Loudon) stands in the western United States. Helicopter applications of verbenone-releasing laminated flakes were made at the rate of 370 g of active ingredient/ha to two sites, one in California and one in Idaho, during summer 2005. Each site consisted of five ...

Tópico(s): Entomopathogenic Microorganisms in Pest Control

2009 - Elsevier BV | Forest Ecology and Management

Artigo

Deog‐Kyoon Jeong,

... receive the IEEE Technical Field Award, commemorating Professor Donald O. Pederson, who pioneered Simulation Program With Integrated Circuit Emphasis, ...

Tópico(s): Electromagnetic Compatibility and Noise Suppression

2024 - Institute of Electrical and Electronics Engineers | IEEE Solid-State Circuits Magazine

Artigo

Danielle Marinese,

Tópico(s): Engineering and Test Systems

2024 - Institute of Electrical and Electronics Engineers | IEEE Solid-State Circuits Magazine

Artigo Revisado por pares

Milton Geivelis, Donald W. Turner, Ernest D. Pederson, B.L. Lamberts,

T his paper describes a study of whether or not the amounts of interleukin‐6 (IL‐6) in gingival crevicular fluid (GCF) are correlated with periodontal clinical measures. A sensitive ELISA was developed to measure IL‐6 in GCF. Two male and 3 female adult subjects with periodontal disease were examined at their first appointments, after 3 months, and after 6 months. Data were obtained on plaque index (PI), bleeding index (BI), probing depth (PD), and on the IL‐6 content of GCF samples from 16 sites per ...

Tópico(s): Endodontics and Root Canal Treatments

1993 - Wiley | Journal of Periodontology

Artigo Revisado por pares

Donald R. Baer, Larry R. Pederson, G.L. McVay,

Surface analysis methods have been incorporated as part of several studies concerning the mechanisms and amount of glass leaching in aqueous solutions. The reactivity of simple glasses with water has been determined by measuring the uptake of D and 18O in soda-lime silicate glass, amorphous and crystalline silica, and amorphous and crystalline albite leached in D218O at 90 °C as a function of time. The concentrations and profiles of 18O and D going into the glass were determined using nuclear reaction ...

Tópico(s): Nuclear materials and radiation effects

1984 - American Institute of Physics | Journal of Vacuum Science & Technology A Vacuum Surfaces and Films

Artigo

Donald R. Baer, L.R. Pederson, Mathew Thomas,

Phosphorus bulk diffusion rates in one sputter-deposited and two liquid-quenched FeNi-based amorphous alloys were determined by measuring the kinetics of phosphorus segregation to a free surface. The diffusion rates for the three materials were found (1) to obey an Arrhenius relationship, (2) to be identical within experimental error and (3) to equal the rate of phosphorus diffusion in bulk iron. The average diffusion activation energy (approximately 1.85 eV atom −1) measured for these materials is ...

Tópico(s): Theoretical and Computational Physics

1981 - Elsevier BV | Materials Science and Engineering

Artigo

Wayne M. Moreau, David J. Merritt, Wendell W. Moyer, M. Hatzakis, Donald W. Johnson, Lester A. Pederson,

The enhancement of the electron beam sensitivity of PMMA from 10−5 C/Cm2 to the 10−6 C/cm2 range has been achieved by incorporation of 15 mol % methacrylic anhydride (MAN) groups into the polymer chain. The MAN group is introduced by cyclization of a copolymer of PMMA–MA (poly methyl methacrylate–methacrylic acid) into a terpolymer of PMMA–MA–MAN of 70/15/15 mol % composition. The terpolymer retains all of the exemplary properties of PMMA; high resolution, excellent adhesion, ease of processing and process ...

Tópico(s): Advanced Surface Polishing Techniques

1979 - American Institute of Physics | Journal of Vacuum Science and Technology