34 Result(s)

Article

A Simplified Model of Surface Burnishing and Friction in Repeated Make-Up Process of Premium Tubular Connections

We develop a simplified model to predict the frictional behaviour of the contact between the surfaces of a rotary shouldered thread connection in the make-up process of premium tubular connections as used in t...

H. R. Le, F. Stewart, J. A. Williams in Tribology Letters (2015)

Article

Tribological Characterisation of Air-Sprayed Epoxy-CNT Nanocomposite Coatings

Epoxy-carbon nanotube (CNT) composites are promising coating materials for wear and corrosion critical applications such as marine bearings, shafts, bolts and gears. However, there are insufficient tribologica...

H. R. Le, A. Howson, M. Ramanauskas, J. A. Williams in Tribology Letters (2012)

Article

Improved antibiotic-free plasmid vector design by incorporation of transient expression enhancers

Methods to improve plasmid-mediated transgene expression are needed for gene medicine and gene vaccination applications. To maintain a low risk of insertional mutagenesis-mediated gene activation, expression-a...

J M Luke, J M Vincent, S X Du, U Gerdemann, A M Leen, R G Whalen… in Gene Therapy (2011)

Chapter and Conference Paper

Cellular mechanisms of pancreatic digestive enzyme secretion

The pancreas is the major provider of digestive enzymes for the luminal phase of digestion, and if they are not adequately present, malabsorption will result. Digestive enzymes are synthesized in and secreted ...

J. A. Williams, X. Chen, Y. Bi, J. W. Lim in Future Perspectives in Gastroenterology (2008)

Article

Synthesising surface matching algorithms using the correspondence framework

Computer vision tasks such as registration, modeling and object recognition, are becoming increasingly useful in industry. Each of these applications employs correspondence algorithms to compute accurate mappi...

B. M. Planitz, A. J. Maeder, J. A. Williams in Pattern Recognition and Image Analysis (2007)

Article

The peeling of flexible probabilistic fasteners

Probabilistic fasteners are attachment devices consisting of two elements each of which is covered by an array of outgrowths or protuberances which interact or interlock with those on the opposing surface to f...

J. A. Williams, S. G. Davies, S. Frazer in Tribology Letters (2007)

Article

Friction and material transfer in micro-scale sliding contact between aluminium alloy and steel

A ball-on-flat reciprocating micro-tribometer has been used to measure the friction coefficient between aluminium alloy strip and a steel ball. A relatively small ball and correspondingly low contact load is u...

H. R. Le, M. P. F. Sutcliffe, J. A. Williams in Tribology Letters (2005)

Article

The Behaviour of Sliding Contacts Between Non-Conformal Rough Surfaces Protected by 'Smart' Films

Many tribological contacts involve two components, each exhibiting finite roughness, sliding over one another for many repeated cycles of operation. Although the initial contact may be plastic, if low wear rat...

J.A. Williams in Tribology Letters (2004)

Article

The influence of temperature and salinity on Acartia (Copepoda: Calanoida) nauplii survival

Adult Acartia congeners, A. bifilosa, A. clausi, A. discaudata and A. tonsa, have distinct seasonal and spatial distribution patterns in Southampton Water (UK), reflecting patterns of temperature and salinity, re...

F. E. Chinnery, J. A. Williams in Marine Biology (2004)

Chapter and Conference Paper

Anisotropic Creep and Fracture Behaviour of a 9CrMoNbV Weld Metal at 650°C

Welds form an integral part of most power and chemical plant structures. At elevated temperature, the service lives of these structures are often governed by the creep behaviour in localised regions of the wel...

T. H. Hyde, W. Sun, P. A. Agyakwa… in Anisotropic Behaviour of Damaged Materials (2003)

Article

Fractionated Stereotactic Radiotherapy for Acoustic Neuromas

J. A. Williams in Acta Neurochirurgica (2002)

Article

Primary cultures of prostate cells and their ability to activate carcinogens

Differences in the incidence of prostate cancer (CaP) amongst different migrant populations point to causative agents of dietary and/or environmental origin. Prostate tissues were obtained following transureth...

F L Martin, K J Cole, G H Muir, G G Kooiman… in Prostate Cancer and Prostatic Diseases (2002)

Article

Repeated Loading, Residual Stresses, Shakedown, and Tribology

Protective residual stresses may be developed in the near surface layers of tribological contacts which enable loads sufficiently large to cause initial plastic deformation to be accommodated purely elasticall...

J. A. Williams, I. N. Dyson, A. Kapoor in Journal of Materials Research (1999)

Article

Friction and lubrication effects in the machining of aluminium alloys

Friction between the rake face of a cutting tool and the freshly formed chip surface plays a vital role in influencing both the ease of cutting and the quality of the resultant machined surface. The existence ...

W.Y.H. Liew, I.M. Hutchings, J.A. Williams in Tribology Letters (1998)

Article

The friction of sliding surfaces carrying boundary layers

Conventional boundary films are thought of as ``solid'' layers in which shear strength is directly proportional to local contact pressure. However, recent studies suggest both that the properties of adsorbed o...

K.A. Blencoe, J.A. Williams in Tribology Letters (1997)

Chapter

Generation of Immunoglobulin/c-myc Recombinations in Murine Peyer’s Patch Follicles

Plasmacytoma can be induced by the intraperitoneal injection of pristane in susceptible BALB/c mice. Most inbred strains of mice, however, are resistant to this type of plasmacytoma induction (Potter & Wiener,...

J. R. Müller, E. B. Mushinski, G. M. Jones, J. A. Williams… in C-Myc in B-Cell Neoplasia (1997)

Chapter

Friction of Sliding Surfaces Carrying Boundary Layers: The Relation between Friction on the Micro- and Macro-Scales

Commercial lubricants invariably contain a chemically complex additive package, one of whose roles is to produce protective boundary layers on the opposing solids: the aim of the lubricant technologist is to p...

K. A. Blencoe, J. A. Williams in Micro/Nanotribology and Its Applications (1997)

Chapter and Conference Paper

Cytotoxicity and Membrane Damage in vitro by Inclusion Complexes Between γ-Cyclodextrin and Siloxanes

Inclusion complexes of γ-cyclodextrin and octamethylcyclotetrasiloxane (D4), decamethyltetrasiloxane (M10TS), and 1,3,5,7-tetramethyltetravinyIcyclotetra-siloxane (TMTV-D4) were prepared to compare the cytotox...

K. Felix, S. Janz, J. Pitha, J. A. Williams, E. B. Mushinski… in Immunology of Silicones (1996)

Article

The feeding rates ofPleurobrachia (ctenophora) andSagitta (chaetognatha), with notes on the potential seasonal role of planktonic predators in the dynamics of north sea zooplankton communities

The zooplankton off the north-east coast of England has been the subject of a number of studies focusing on its productivity. It has also been shown to be representative of the zooplankton of much of the weste...

C. L. J. Frid, L. C. Newton, J. A. Williams in Netherland Journal of Aquatic Ecology (1994)

Article

The effect of maturation on in-vitro erosion of glass-ionomer and other dental cements

The clinical durability of restorations made using water-based materials depends upon the type of material used. Current specification tests cannot predict durability, possibly because these are carried out on...

J A Williams, R W Billington, G J Pearson in British Dental Journal (1992)