Determination of strain during hot tearing by image correlation (2007)
Mitchell, J.B., Cockcroft, S.L., Viano, D., Davidson, C., StJohn, D.
The evolution of strain and strain at the onset of localization resulting in a hot tear has been determined for alloys AA6111, AA3104, CA31218, and Al-0.5 wt pct Cu during solidification. A bar...
Atomic Processes Relevant to Antimatter Fuel Production and Storage (2006)
Electric field effects have been identified in the dissociative recombination of H3+ ions. This process proceeds via the formation of high lying Rydberg states that are field ionized in the ion...
MICROSTRUCTURE STUDIES OF POLYCRYSTALLINE REFRACTORY OXIDES (2005)
Vasilos ,T., Spriggs ,R. M., Mitchell,J. B.
Transverse bend strength and eastic modulus determinaions made of fine-grained (1 to 2 micron), dense, pure Al2O3 and MgO specimens as a function of temperature (up to 1350 C) revealed values higher...
MICROSTRUCTURE STUDIES OF POLYCRYSTALLINE REFRACTORY OXIDES. (2005)
Alumina and magnesia specimens were prepared having grain sizes from 20 to 300 microns. Transverse bend strength and elastic modulus determinations were made on 50-, 100-, and 300micron grain-size...
MICROSTRUCTURE STUDIES OF POLYCRYSTALLINE REFRACTORY OXIDES. (1998)
Mitchell,J.B., Spriggs,R.M., Vasilos,T.
The elastic modulus and transverse bend strength of pure, dense alumina and magnesia specimens were determined as a function of grain size (1 to 250 microns) and temperature over the range of 30 to...
Merged Beam Studies of the Dissociative Recombination of H3(+) and H2(+). (1998)
This report is intended to provide an update on the progress of an ongoing investigation into the recombination of electrons with hydrogenic molecular ions, namely, hydrogen +2, and hydrogen +3....
This report contains a summary of the papers presented at the International Symposium on Dissociative Recombination: Theory, Experiment and Applications held at Lake Louise, Alberta, Canada. May...
Merged Beam Studies into the Mechanisms of Hydrogen Molecular Ion Recombination. (1998)
Measurements of the dissociative Recombination and Excitation of HeH +, the dissociative excitation of H3(+), the branching ratio for the decay channels for H+(3) (v= O) recombination and the cross...
Merged Beam Studies of the Dissociative Recombination of H(+3) Ions with Low Internal Energy. (1998)
Dissociative recombination and excitation measurements have been performed for H + 3 ions formed under a variety of Source pressures and gas mixtures. At low pressures, an r.f. trap ion source...
Hydrogenic Ion Recombination. (1998)
This project studied dissociative recombination of hydrogenic molecules H2(+) and H3(+). High lying Rydberg states were found to play a principle role in the determination of final products from...
Merged Beam Studies of Laser Stimulated Radiative Recombination. (1998)
A brief description is given of a multi-pass cavity assembly, installed recently in the merged beams apparatus. Results for the recombination of molecular ions to give neutrals in specific principal...
Merged Beam Studies of Laser Stimulated Radiative Recombination. (1998)
New measurements of the stimulated recombinations of electrons and protons to form hydrogen atoms in states n=11, 12 and 13 are presented. Measurements have also been made for the stimulated...
Development of a Clean Air Fire Training Fuel. (1998)
This report describes a series of tests involving the measurement of emissions from six feet diameter fires of JP4, JP5, JP8 and a new clean burning fuel CD2022 with smoke reducing additive....
This report results from a contract tasking University of Rennes I as follows: The contractor will perform a study of soot growth and nucleation by a time-resolved synchrotron radiation based x-ray...
Synchrotron Radiation Based Study of X-Ray Absorption of Flame Generated Nanoparticles (1998)
This report results from a contract tasking University of Rennes I as follows: The contractor will perform a study of soot growth and nucleation by a time-resolved synchrotron radiation based x-ray...
Nitric oxide protects against cellular damage and cytotoxicity from reactive oxygen species.
Wink, D A, Hanbauer, I, Krishna, M C, DeGraff, W, Gamson, J, Mitchell, J B
Nitric oxide, NO, which is generated by various components of the immune system, has been presumed to be cytotoxic. However, NO has been proposed to be protective against cellular damage resulting...
Oxoammonium cation intermediate in the nitroxide-catalyzed dismutation of superoxide.
Krishna, M C, Grahame, D A, Samuni, A, Mitchell, J B, Russo, A
Dismutation of superoxide has been shown previously to be catalyzed by stable nitroxide compounds. In the present study, the mechanism of superoxide (.O2-) dismutation by various five-membered ring...
Van Horn, K G, Gedris, C A, Rodney, K M, Mitchell, J B
Brain heart infusion-6-micrograms/ml vancomycin agar plates obtained from five commercial sources (B-D Microbiology Systems, Carr-Scarborough Microbiologicals, MicroBio Products, PML...
Nitroxide stable radicals protect beating cardiomyocytes against oxidative damage.
Samuni, A, Winkelsberg, D, Pinson, A, Hahn, S M, Mitchell, J B, Russo, A
The protective effect of stable nitroxide radicals against oxidative damage was studied using cardiomyocyte cultures obtained from newborn rats. Monolayered cardiomyocytes were exposed to H2O2 and...
When hybridization subtraction was used to enrich for sequences induced by heat shock in Chinese hamster cells, B2 sequences were found to be one of the major sequences enriched. With cloned B2...
Bromodeoxyuridine in tumors and chromosomes detected with a monoclonal antibody.
Morstyn, G, Hsu, S M, Kinsella, T, Gratzner, H, Russo, A, Mitchell, J B
Using a monoclonal antibody to bromodeoxyuridine (BUdR) and immunohistochemistry, we measured the incorporation of this thymidine analogue into the DNA of human normal and malignant cells exposed in...
On the spin trapping and ESR detection of oxygen-derived radicals generated inside cells.
Samuni, A, Carmichael, A J, Russo, A, Mitchell, J B, Riesz, P
Recently several attempts to identify oxygen-derived radicals in whole cells by spin trapping and electron spin resonance have been reported by using 5,5-dimethyl-1-pyrroline-N-oxide as the spin...
The changing nature of physicians' office visits.
Mitchell, J B, Schurman, R, Cromwell, J
Although there is a general feeling that, into the early 1980s, overall improvement was occurring in the content and quality of physicians' services, no time-series documentation to date has appeared...
An economic model of large Medicaid practices.
Public attention given to Medicaid "mills" prompted this more general investigation of the origins of large Medicaid practices. A dual market demand model is proposed showing how Medicaid competes...
Time trends in inpatient physician spending.
OBJECTIVE. Despite falling admissions and declining lengths of stay, Medicare expenditures for inpatient physician services have continued to climb; this article seeks to understand this trend by...
Impact of Medicare payment reductions on access to surgical services.
OBJECTIVE. This study evaluates the impact of surgical fee reductions under Medicare on the utilization of surgical services. DATA SOURCES. Medicare physician claims data were obtained from 11 states...
Using physician claims to identify postoperative complications of carotid endarterectomy.
Mitchell, J B, Ballard, D J, Whisnant, J P, Ammering, C J, Matchar, D B, Samsa, G P
OBJECTIVE. This study develops a methodology for identifying complications following carotid endarterectomy, using physician claims data. DATA SOURCES/STUDY SETTING. We selected a random 20 percent...
Nitric oxide protects against cellular damage and cytotoxicity from reactive oxygen species.
Wink, D A, Hanbauer, I, Krishna, M C, DeGraff, W, Gamson, J, Mitchell, J B
Nitric oxide, NO, which is generated by various components of the immune system, has been presumed to be cytotoxic. However, NO has been proposed to be protective against cellular damage resulting...
Oxoammonium cation intermediate in the nitroxide-catalyzed dismutation of superoxide.
Krishna, M C, Grahame, D A, Samuni, A, Mitchell, J B, Russo, A
Dismutation of superoxide has been shown previously to be catalyzed by stable nitroxide compounds. In the present study, the mechanism of superoxide (.O2-) dismutation by various five-membered ring...
Van Horn, K G, Gedris, C A, Rodney, K M, Mitchell, J B
Brain heart infusion-6-micrograms/ml vancomycin agar plates obtained from five commercial sources (B-D Microbiology Systems, Carr-Scarborough Microbiologicals, MicroBio Products, PML...
Nitroxide stable radicals protect beating cardiomyocytes against oxidative damage.
Samuni, A, Winkelsberg, D, Pinson, A, Hahn, S M, Mitchell, J B, Russo, A
The protective effect of stable nitroxide radicals against oxidative damage was studied using cardiomyocyte cultures obtained from newborn rats. Monolayered cardiomyocytes were exposed to H2O2 and...
When hybridization subtraction was used to enrich for sequences induced by heat shock in Chinese hamster cells, B2 sequences were found to be one of the major sequences enriched. With cloned B2...
Bromodeoxyuridine in tumors and chromosomes detected with a monoclonal antibody.
Morstyn, G, Hsu, S M, Kinsella, T, Gratzner, H, Russo, A, Mitchell, J B
Using a monoclonal antibody to bromodeoxyuridine (BUdR) and immunohistochemistry, we measured the incorporation of this thymidine analogue into the DNA of human normal and malignant cells exposed in...
On the spin trapping and ESR detection of oxygen-derived radicals generated inside cells.
Samuni, A, Carmichael, A J, Russo, A, Mitchell, J B, Riesz, P
Recently several attempts to identify oxygen-derived radicals in whole cells by spin trapping and electron spin resonance have been reported by using 5,5-dimethyl-1-pyrroline-N-oxide as the spin...
The changing nature of physicians' office visits.
Mitchell, J B, Schurman, R, Cromwell, J
Although there is a general feeling that, into the early 1980s, overall improvement was occurring in the content and quality of physicians' services, no time-series documentation to date has appeared...
An economic model of large Medicaid practices.
Public attention given to Medicaid "mills" prompted this more general investigation of the origins of large Medicaid practices. A dual market demand model is proposed showing how Medicaid competes...
Time trends in inpatient physician spending.
OBJECTIVE. Despite falling admissions and declining lengths of stay, Medicare expenditures for inpatient physician services have continued to climb; this article seeks to understand this trend by...
Impact of Medicare payment reductions on access to surgical services.
OBJECTIVE. This study evaluates the impact of surgical fee reductions under Medicare on the utilization of surgical services. DATA SOURCES. Medicare physician claims data were obtained from 11 states...
Using physician claims to identify postoperative complications of carotid endarterectomy.
Mitchell, J B, Ballard, D J, Whisnant, J P, Ammering, C J, Matchar, D B, Samsa, G P
OBJECTIVE. This study develops a methodology for identifying complications following carotid endarterectomy, using physician claims data. DATA SOURCES/STUDY SETTING. We selected a random 20 percent...
Mitchell, J. B., Ballard, D. J., Matchar, D. B., Whisnant, J. P., Samsa, G. P.
OBJECTIVE: This study evaluates the role of neurologists in explaining African American-white differences in the use of diagnostic and therapeutic services for cerebrovascular disease. DATA...
Relationship between locking-bolt torque and load pre-tension in the Ilizarov frame
Osei, N.A., Bradley, B.M., Culpan, P., Mitchell, J.B., Barry, M., Tanner, K.E.
The wire–bolt interface in an Ilizarov frame has been mechanically tested. The optimal torque to be applied to the frame locking-bolts during physiological loading has been defined. The set-up...
Relationship between locking-bolt torque and load pre-tension in the Ilizarov frame
Osei, N.A., Bradley, B.M., Culpan, P., Mitchell, J.B., Barry, M., Tanner, K.E.
The wire–bolt interface in an Ilizarov frame has been mechanically tested. The optimal torque to be applied to the frame locking-bolts during physiological loading has been defined. The set-up...