Search Results - "Armstrong, W.  R."

Hall-Petch description of nanopolycrystalline Cu, Ni and Al strength levels and strain rate sensitivities by Armstrong, R. W.

“…Strength and strain rate sensitivity measurements for nanopolycrystalline copper, nickel and aluminium materials are assessed on the basis of a Hall-Petch…”
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Unified Hall-Petch description of nano-grain nickel hardness, flow stress and strain rate sensitivity measurements by Armstrong, R. W., Balasubramanian, N.

“…It is shown that: (i) nano-grain nickel flow stress and hardness data at ambient temperature follow a Hall-Petch (H-P) relation over a wide range of grain…”
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Flow stress/strain rate/grain size coupling for fcc nanopolycrystals by Armstrong, R. W., Rodriguez, P.

“…A Hall-Petch (H-P)-type dependence is demonstrated for reciprocal activation volume measurements for nanocrystalline and conventional grain size, strengthened…”
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Dislocation viscoplasticity aspects of material fracturing by Armstrong, R.W.

“…Dislocation viscoplasticity, whether occurring before, during, or after the appearance of cracking, and with energy requirement additional to needed crack…”
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Enhanced Propellant Combustion with Nanoparticles by Armstrong, R. W, Baschung, B, Booth, D. W, Samirant, M

“…Enhanced burn rate results are presented for ammonium perchlorate/Al nanoparticle strand burners at atmospheric (and higher) pressure and for the comparative…”
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Dislocation mechanics of shock-induced plasticity by ARMSTRONG, R. W, ARNOLD, W, ZERILLI, F. J

“…[2], the deformation rate dependence of such body-centered cubic (bcc) materials is of added interest in the very high strain rate regime for two reasons: (1)…”
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A constitutive equation for the dynamic deformation behavior of polymers by ZERILLI, F. J, ARMSTRONG, R. W

“…A constitutive equation based on the generalized concept of thermally activated flow units is developed to describe the stress–strain behavior of polymers as a…”
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Dislocation and Grain Size Roles in Physical Mesomechanics by Armstrong, R. W.

“…An update of research interests is given here on: (i) a historical description of the influence of polycrystal grain size on metal strength properties; (ii) a…”
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Nasopharyngeal carcinoma in Malaysian Chinese: occupational exposures to particles, formaldehyde and heat by Armstrong, R Warwick, Imrey, Peter B, Lye, Munn Sann, Armstrong, M Jocelyn, Yu, Mimi C, Sani, Sham

“…Background During 1990–1992, 282 Chinese residents of Selangor and the Federal Territory, Malaysia with histologically confirmed nasopharyngeal carcinoma (NPC)…”
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The micro- to nano-scale dislocation mechanics of (001) MgO crystal hardness by Armstrong, R. W., Elban, W. L.

“…Micro- to nano-indentation hardness-based stress-strain computations made for Berkovich spherically-tipped impressions put into (001) MgO crystal surfaces show…”
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Evidence of Human Herpesvirus 6 Infection in 4 Immunocompetent Patients with Encephalitis by Isaacson, Erin, Glaser, Carol A., Forghani, Bagher, Amad, Zahwa, Wallace, Mark, Armstrong, Robert W., Exner, Maurice M., Schmid, Scott

“…We describe 4 patients with encephalitis due to possible reactivation of human herpesvirus 6 (HHV-6) infection who were enrolled in the California Encephalitis…”
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Thermal Activation Analysis for Higher-Temperature Deformation of Gamma-Iron by Armstrong, R. W., Balasubramanian, N.

“…Recent extension of Zerilli–Armstrong (Z–A) constitutive relations to higher temperature is assessed using yield strength measurements on 0.09 C steel covering…”
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Physically-Based and Power-Law Constitutive Relations for Higher Temperature Metal Processing and Creep-Type Deformations by Armstrong, R. W., Balasubramanian, N.

“…There is continuing research interest in the development and use of constitutive relations for assistance with description and optimization of higher…”
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Brainstem Encephalitis (Rhombencephalitis) Due to Listeria monocytogenes: Case Report and Review by Armstrong, Robert W., Fung, Peter C.

“…Listerial brainstem encephalitis is a rare disease. Only 62 cases have been reported previously; all were in adults, only 8% of whom were immunosuppressed. The…”
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Intrathecally administered baclofen for treatment of children with spasticity of cerebral origin by ARMSTRONG, R. W, STEINBOK, P, COCHRANE, D. D, KUBE, S. D, FIFE, S. E, FARRELL, K

“…Management of severe spasticity in children is often a difficult problem. Orally administered medications generally offer limited benefits. This study examines…”
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Septic arthritis following arthroscopy: clinical syndromes and analysis of risk factors by Armstrong, R W, Bolding, F, Joseph, R

“…During a 4-year study of 4,256 knee arthroscopies, eighteen patients became infected (infection rate 0.42%). Occurrence of infection was strongly associated…”
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Trends in Incidence Rates of Adenocarcinoma of the Oesophagus and Gastric Cardia in New Zealand, 1978–1992 by ARMSTRONG, R WARWICK, BORMAN, BARRY

“…Armstrong R W (Department of Community Health, University of Illinois at Urbana-Champaign, 1206 S. Fourth Street, Champaign, IL 61820, USA), Borman B. Trends…”
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Fracturing across the multi-scales of diverse materials by Armstrong, R. W., Antolovich, S. D., Griffiths, J. R., Knott, J. F.

“…Everyone has to deal with fracturing of materials at one level or another, beginning from normal household chores and extending to the largest scale of…”
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Nasopharyngeal carcinoma in Malaysian Chinese: Salted fish and other dietary exposures by Armstrong, R. Warwick, Imrey, Peter B., Lye, Munn Sann, Armstrong, M. Jocelyn, Yu, Mimi C., Sani, Sham

“…We interviewed 282 histologically confirmed cases of nasopharyngeal carcinoma (NPC) in Chinese residents of Selangor and the Federal Territory, Malaysia, and…”
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Tungsten (111) crystal strain hardening in nano-indentations by Armstrong, R.W., Elban, W.L.

“…Plastic stress-strain calculations are presented for a substantial range in load versus displacement measurements made with rounded tips of Berkovich…”
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