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Showing 1 to 12 of 103 entries
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Population density-dependent metal tolerance: One possible basis and its ecological implications.

Microbial ecology

Duxbury T, McIntyre R.
PMID: 24196200
Microb Ecol. 1989 Nov;18(3):187-97. doi: 10.1007/BF02075807.

A population density-dependent copper (Cu) resistance mechanism in a gram-negative soil bacterium, strain TDCd1, was shown to be inducible and was accompanied by changes in the protein composition of the outer membrane of the cell envelope. Characteristically, following inoculation...

Using a proforma to improve standards of documentation of an orthopaedic post-take ward round.

BMJ quality improvement reports

Duxbury O, Hili S, Afolayan J.
PMID: 26734180
BMJ Qual Improv Rep. 2013 Apr 24;2(1). doi: 10.1136/bmjquality.u200902.w699. eCollection 2013.

In Trauma and Orthopaedics, a daily Trauma Meeting (TM) occurs, where the previous 24-hour take is discussed and a management plan is decided by the consultant on-take. The post-take ward-round (PTWR) usually follows. In the district general hospital (DGH)...

Ground state nonuniversality in the random-field Ising model.

Physical review. E, Statistical, nonlinear, and soft matter physics

Duxbury PM, Meinke JH.
PMID: 11580399
Phys Rev E Stat Nonlin Soft Matter Phys. 2001 Sep;64(3):036112. doi: 10.1103/PhysRevE.64.036112. Epub 2001 Aug 27.

Two attractive and often used ideas, namely, universality and the concept of a zero-temperature fixed point, are violated in the infinite-range random-field Ising model. In the ground state we show that the exponents can depend continuously on the disorder...

Minimum spanning trees on random networks.

Physical review letters

Dobrin R, Duxbury PM.
PMID: 11384425
Phys Rev Lett. 2001 May 28;86(22):5076-9. doi: 10.1103/PhysRevLett.86.5076.

We show that the geometry of minimum spanning trees (MST) on random graphs is universal. Because of this geometric universality, we are able to characterize the energy of MST using a scaling distribution [P(epsilon)] found using uniform disorder. We...

The nu(2), nu(4) + nu(5), nu(6) + nu(9), and nu(8) Band System in 1,1,1-Trifluoroethane.

Journal of molecular spectroscopy

Duxbury G, McPhail MJ, Smith KM, Nivellini G, Tullini F, Celli A.
PMID: 10712865
J Mol Spectrosc. 2000 Jan;199(1):13-17. doi: 10.1006/jmsp.1999.7997.

High-resolution FTIR spectra of 1,1,1-trifluoroethane (HFC-143a) have been recorded in the region from 1370 to 1470 cm(-1) with an unapodized resolution of 0.0016 cm(-1) at room temperature and of 0.004 cm(-1) at 183 and 100 K. The two main...

General strategies for nanoparticle dispersion.

Science (New York, N.Y.)

Mackay ME, Tuteja A, Duxbury PM, Hawker CJ, Van Horn B, Guan Z, Chen G, Krishnan RS.
PMID: 16556836
Science. 2006 Mar 24;311(5768):1740-3. doi: 10.1126/science.1122225.

Traditionally the dispersion of particles in polymeric materials has proven difficult and frequently results in phase separation and agglomeration. We show that thermodynamically stable dispersion of nanoparticles into a polymeric liquid is enhanced for systems where the radius of...

Ab initio determination of solid-state nanostructure.

Nature

Juhás P, Cherba DM, Duxbury PM, Punch WF, Billinge SJ.
PMID: 16572167
Nature. 2006 Mar 30;440(7084):655-8. doi: 10.1038/nature04556.

Advances in materials science and molecular biology followed rapidly from the ability to characterize atomic structure using single crystals. Structure determination is more difficult if single crystals are not available. Many complex inorganic materials that are of interest in...

Maximum independent set on diluted triangular lattices.

Physical review. E, Statistical, nonlinear, and soft matter physics

Fay CW, Liu JW, Duxbury PM.
PMID: 16803003
Phys Rev E Stat Nonlin Soft Matter Phys. 2006 May;73(5):056112. doi: 10.1103/PhysRevE.73.056112. Epub 2006 May 16.

Core percolation and maximum independent set on random graphs have recently been characterized using the methods of statistical physics. Here we present a statistical physics study of these problems on bond diluted triangular lattices. Core percolation critical behavior is...

Polymer chain swelling induced by dispersed nanoparticles.

Physical review letters

Tuteja A, Duxbury PM, Mackay ME.
PMID: 18352595
Phys Rev Lett. 2008 Feb 22;100(7):077801. doi: 10.1103/PhysRevLett.100.077801. Epub 2008 Feb 21.

The dimensions of individual deuterated polystyrene (d-PS) chains in a well-dispersed mixture of protonated polystyrene and chemically identical nanoparticles was determined by neutron scattering. A 10%-20% increase in the radius of gyration of d-PS was found when the nanoparticles...

Self-assembled multilayers of nanocomponents.

Nano letters

Krishnan RS, Mackay ME, Duxbury PM, Pastor A, Hawker CJ, Van Horn B, Asokan S, Wong MS.
PMID: 17261075
Nano Lett. 2007 Feb;7(2):484-9. doi: 10.1021/nl062866u. Epub 2007 Jan 30.

We show it is possible to assemble nanoparticle-polymer layers in a controllable manner dictated by the difference in nano-object morphology and dielectric properties. A thin (10-100 nm) layer of the two components is spin coated onto a solid substrate...

Supramolecular structure in s-block metal complexes of sulfonated monoazo dyes: discrepant packing and bonding behavior of ortho-sulfonated azo dyes.

Chemistry (Weinheim an der Bergstrasse, Germany)

Kennedy AR, Andrikopoulos PC, Arlin JB, Armstrong DR, Duxbury N, Graham DV, Kirkhouse JB.
PMID: 19658126
Chemistry. 2009 Sep 21;15(37):9494-504. doi: 10.1002/chem.200802555.

The first solid-state structures of ortho-sulfonated monoazo dyestuffs are reported and compared to those of their para- and meta-sulfonated analogues. The structures of the 16 Na, K, Cs, Mg, Ca, Sr, and Ba ortho-sulfonated salts are found to have...

Application of a quantum cascade laser for time-resolved, in situ probing of CH4/H2 and C2H2/H2 gas mixtures during microwave plasma enhanced chemical vapor deposition of diamond.

The journal of physical chemistry. A

Cheesman A, Smith JA, Ashfold MN, Langford N, Wright S, Duxbury G.
PMID: 16494395
J Phys Chem A. 2006 Mar 02;110(8):2821-8. doi: 10.1021/jp056622u.

First illustrations of the utility of pulsed quantum cascade lasers for in situ probing of the chemistry prevailing in microwave plasma activated hydrocarbon/Ar/H2 gas mixtures used for diamond thin film growth are reported. CH4 and C2H2 molecules, and their...

Showing 1 to 12 of 103 entries