Digital predictions of complex cylinder packed columns (2009)
Caulkin, R., Ahmad, I., Fairweather, M., Jia, X., Williams, R.A.
A digital computational approach has been developed to simulate realistic structures of packed beds. The underlying principle of the method is digitisation of the particles and packing space,...
Simulations of Structures in Packed Columns and Validation by X-ray Tomography (2009)
Caulkin, R, Jia, X, Xu, C, Fairweather, M, Williams, R A, Stitt, H, ...
Packing simulations of generic, nonspherical pellets were performed and compared with experimental data sets obtained using X-ray Computerized tomography (CT). Two modified versions of what was...
Advances in Direct Measurement of Structures and Permeability from 3D Tomographic Imaging (2008)
R A Williams, X Jia, C Selomulya
ABSTRACT X-ray Microtomography (XMT) is a relatively new technology for measuring and characterising structures of materials at micron scales. It operates on the same principles as hospital CT...
C Xu, X Jia, R A Williams, E H Stitt, M. Nijemeisl, S El-bachir, ...
Existing theories and computer models for packed columns are either incapable of handling complex pellet shapes or based on simplified pellet geometry. A digital packing algorithm, namely DigiPac,...
Robert G. Olsen, L. Knighten, Bruce Archambeault, Samuel Connor, James L. Drewniak, T. X. Nguyen, ...
In this issue you will find three practical papers that should be of interest to members of the EMC community.
Dynamic optical lattices: two-dimensional rotating and accordion lattices for ultracold atoms (2008)
Williams, R. A., Pillet, J. D., Al-Assam, S., Fletcher, B., Shotter, M., Foot, C. J.
We demonstrate a novel experimental arrangement which rotates a 2D optical lattice at frequencies up to several kilohertz. Ultracold atoms in such a rotating lattice can be used for the direct...
Bushby, R.J., Kilner, C., Taylor, N., Williams, R.A.
One and two electron oxidation of the manganese(II) complex [L2Mn(hfac)2] {L = 4'',4'''-di-tert-butyl-2',2'',2'''trimethoxy-{4-(4'-diphenylaminophenyl)pyridine} were studied by ultra violet/ visible/...
Impact Fracture of Composite and Homogeneous Nanoagglomerates (2008)
S. J. Antony, R. Moreno-Atanasio, J. Musadaidzwa, R. A. Williams
It is not yet clear on whether the fracture characteristics of structured composite capsules and homogeneous nanoagglomerates differ significantly under impact loading conditions. Experimental...
Impact Fracture of Composite and Homogeneous Nanoagglomerates (2008)
S. J. Antony, R. Moreno-Atanasio, J. Musadaidzwa, R. A. Williams
It is not yet clear on whether the fracture characteristics of structured composite capsules and homogeneous nanoagglomerates differ significantly under impact loading conditions. Experimental...
Validation of DigiPac Simulations of packed columns using x-ray microtomography (2007)
Jia, X., Xu, C., Caulkin, R., Williams, R.A., Stitt, H., Nijemeisland, M., ...
5th World Congress on Industrial Process Tomography
Non-linear modelling of a gas strut used in ground vehicle suspensions (2007)
Gao, B., Darling, J., Tilley, D. G., Williams, R. A., Bean, A., Donahue, J.
Gas struts are widely used in vehicle suspensions. However, they are highly non-linear and conventional linear models are not sufficient to describe their complex behaviour. In this paper, two...
Goodrich, K. H., Flemisch, F. O., Schutte, P. C., Williams, R. A.
Driven by increased safety, efficiency, and airspace capacity, automation is playing an increasing role in aircraft operations. As aircraft become increasingly able to autonomously respond to a range...
Control of a hydropneumatic active suspension based on a non-linear quarter-car model (2006)
Gao, B., Darling, J., Tilley, D. G., Williams, R. A., Bean, A., Donahue, J.
It is extremely difficult to maintain simultaneously a high standard of ride, handling, and body control in a vehicle with a conventional passive suspension. However, it is well known that active...
Jacques, S.D.M., Pile, K., Barnes, P., Lai, X., Roberts, K.J., Williams, R.A.
A new tomographic technique, based on synchrotron X-ray diffraction, has been used to chart polymorphic content and crystallite alignment inside a model pharmaceutical reactor. This reveals complex...
Non-linear modelling of a novel gas strut (2005)
Gao, B., Darling, J., Tilley, D. G., Williams, R. A., Bean, A., Donahue, J.
The strut is one of the most important components in a vehicle suspension system; however, it is also one of the most difficult elements to model owing to its highly nonlinear characteristics. In...
Relationships among Rates of Attrition in Training and Subsequent Attrition in Line Units (2004)
Dyer, F. N., Burke, W. P., Williams, R. A., Hilligoss, R. E.
This research was conducted as an in-house effort by the ARI Field Unit at Fort Benning, Georgia. The emphasis in the research on the effects of management policies on enlisted attrition is a...
Report on state revenue sharing relativities: 2004 Review (2004)
Morris, A. G., Wiltshire, K. W., Rolfe, H. A., Early, L. J., Williams, R. A., Nicholas, M. A.
Report on state revenue sharing relativities: 2004 Review. Supporting information (2004)
Morris, A. G., Wiltshire, K. W., Rolfe, H. A., Early, L. J., Williams, R. A., Nicholas, M. A.
Report on state revenue sharing relativities: 2004 Review (2004)
Morris, A. G., Wiltshire, K. W., Rolfe, H. A., Early, L. J., Williams, R. A., Nicholas, M. A.
Report on state revenue sharing relativities: 2004 Review. Supporting information (2004)
Morris, A. G., Wiltshire, K. W., Rolfe, H. A., Early, L. J., Williams, R. A., Nicholas, M. A.
Modeling of a Novel Gas Strut Using Neural Networks (2004)
Gao, B., Darling, J., Tilley, D. G., Williams, R. A., Bean, A., Donahue, J.
Passive suspensions have been developed to a high level of sophistication but in order to further improve vehicle performance it is important to fully understand the dynamic behaviour of the...
Nagata,J. I., Voss,J. S., Williams,R. A.
The Preliminary Airworthiness Evaluation of the AH-1S Modernized Cobra, (S/N 69-16423) with the Kellett ferry tanks installed was conducted at Edwards Air Force Base, California (2302 feet) and...
Report on state revenue sharing relativities: 2002 update (2002)
Morris, A. G., Wiltshire, K. W., Early, L. J., Rolfe, H. A., Williams, R.A.
Report on state revenue sharing relativities: 2002 update. Supporting information (2002)
Morris, A. G., Wiltshire, K. W., Early, L. J., Rolfe, H. A., Williams, R.A.
Report on state revenue sharing relativities: 2003 update (2002)
Morris, A. G., Wiltshire, K. W., Early, L. J., Rolfe, H. A., Williams, R.A., Searle, R. J.
Report on state revenue sharing relativities: 2003 update: Supporting information (2002)
Morris, A. G., Wiltshire, K. W., Early, L. J., Rolfe, H. A., Williams, R.A., Searle, R. J.
Report on state revenue sharing relativities: 2002 update (2002)
Morris, A. G., Wiltshire, K. W., Early, L. J., Rolfe, H. A., Williams, R.A.
Report on state revenue sharing relativities: 2002 update. Supporting information (2002)
Morris, A. G., Wiltshire, K. W., Early, L. J., Rolfe, H. A., Williams, R.A.
Report on state revenue sharing relativities: 2003 update (2002)
Morris, A. G., Wiltshire, K. W., Early, L. J., Rolfe, H. A., Williams, R.A., Searle, R. J.
Report on state revenue sharing relativities: 2003 update: Supporting information (2002)
Morris, A. G., Wiltshire, K. W., Early, L. J., Rolfe, H. A., Williams, R.A., Searle, R. J.
Design and application of a multi-modal process tomography system (2001)
Hoyle, B.S., Jia, X., Podd, F.J.W., Schlaberg, H.I., Tan, H.S., Wang, M., ...
This paper presents a design and application study of an integrated multi-modal system designed to support a range of common modalities: electrical resistance, electrical capacitance and ultrasonic...
Design and application of a multi-modal process tomography system (2001)
Hoyle, B.S., Jia, X., Podd, F.J.W., Schlaberg, H.I., Tan, H.S., Wang, M., ...
This paper presents a design and application study of an integrated multi-modal system designed to support a range of common modalities: electrical resistance, electrical capacitance and ultrasonic...
Design and application of a multi-modal process tomography system (2001)
Hoyle, B.S., Jia, X., Podd, F.J.W., Schlaberg, H.I., Tan, H.S., Wang, M., ...
This paper presents a design and application study of an integrated multi-modal system designed to support a range of common modalities: electrical resistance, electrical capacitance and ultrasonic...
Evaluation of UH-1H Hover Performance Degradation Caused by Rotor Icing. (1998)
Abbott,W. Y., Belte,D., Williams,R. A., Stellar,F. W.
Hover icing tests were conducted with a UH-1H helicopter. The rotor blade ice shapes obtained in the Canadian National Research Council Icing Spray Rig were documented using steroscopic photography,...
Detailed soil survey of Cambria Vineyard : a chemical and physical analysis / (1997)
Williams, R. A., Henderson B. L., Bassil, E.
Thesis (B.S.)--California Polytechnic State University, 1997.
HCI: Whose Problem Is IT Anyway? (1992)
Rob Procter, Robin Williams, R. N. Procter, R. A. Williams
This paper reviews the current state of HCI. We argue that HCI lacks a sufficient understanding of the issues that effect the usability both of computer systems, and of HCI practices in real...
Thesis (Ph. D.).
THE FROZEN SHOULDER: A REVIEW OF MANIPULATIVE TREATMENT (1980)
THOMAS, D., WILLIAMS, R. A., SMITH, D. S.
The pathogenesis and management of frozen shoulder remain controversial. A review of the literature suggests that constrictive capsulitis is a pathological feature common to chronic cases, and this...
The Treatment of Acromegaly with Special Reference to Trans-sphenoidal Hypophysectomy (1975)
WILLIAMS, R. A., JACOBS, H. S., KURTZ, A. B., MILLAR, J. G. B., OAKLEY, N. W., SPATHIS, G. S., ...
Experience in the management of 100 cases of acromegaly is described. Three quarters of these had been referred directly to the endocrine clinic at the Middlesex Hospital. The remainder were referred...
Thesis (Ph. D.)--University of London.
One hundred and forty eight isolates of the genus Thermus, from neutral and alkaline hot water springs on four continents, have been screened for the presence of restriction endonuclease activity. An...
127 isolates of the genus Thermus, from neutral and alkaline hot water springs on four continents, have been screened for the presence of restriction endonuclease activity. An isolate (YS52) from...
Williams, R A, Rode, J, Dhillon, A P, Jarvis, L R, Skinner, J M, Jamal, O
Using a computed video image analysis system, the staining intensity for both neurone specific enolase (NSE) and S100 protein was measured in sections from 19 malignant melanomas and 16 benign...
Can histopathologists reliably diagnose molar pregnancy?
Howat, A J, Beck, S, Fox, H, Harris, S C, Hill, A S, Nicholson, C M, ...
AIMS--To assess the degree of difficulty in diagnosing partial mole by analysing intraobserver and interobserver agreement among a group of pathologists for these diagnoses. METHODS--Fifty mixed...
Sixteen isolates of thermophilic bacteria from the genus Thermus, isolated from neutral and alkaline hot water springs in the southwest region of Iceland, were tested for the presence of restriction...
We have recently screened 112 separate isolates of the genus Thermus, collected from neutral and alkaline hot water springs on four continents, for the presence of the Type-II restriction...
The fructose 1,6-bisphosphate [Fru(1,6)P2]-dependent lactate dehydrogenase in cells of Streptococcus uberis N.C.D.O. 2039 was purified by a procedure that included chromatography on DEAE-cellulose...
The porphyrin pigmentation of subspecies of Bacteroides melaninogenicus.
Shah, H N, Bonnett, R, Mateen, B, Williams, R A
Various subspecies of Bacteroides melaninogenicus differ in their pigmentation. Subsp. asaccharolyticus produces protohaem almost exclusively, subsp. intermedicus both protohaem and a smaller...
Cao, W, Lu, J, Welch, S G, Williams, R A, Barany, F
Two TaqI endonuclease (hereafter referred to as TaqI) isoschizomer genes, tsp32IR from Thermus species SM32 of Azores and tfiTok6A1I from T. filiformis Tok6A1 of New Zealand, were cloned in...
Wilson, S E, Robinson, G, Williams, R A, Stabile, B E, Cone, L, Sarfeh, I J, ...
Thirty-six major abdominal operations were performed on 35 Acquired Immune Deficiency Syndrome (AIDS) patients (33 men, two women). Twenty-two elective operations were indicated for diagnosis of...
Late failure in vein grafts: mediating factors in subendothelial fibromuscular hyperplasia.
Karayannacos, P E, Hostetler, J R, Bond, M G, Kakos, G S, Williams, R A, Kilman, J W, ...
Late failure of autologous vein grafts often results from excessive subendothelial fibromuscular hyperplasia. Varying factors have been implicated in this process, but the exact etiology remains...
Junior Hospital Staff Contract
Howell, John F., Lewis, Rhidian H., Giltinan, W. M., Mathew, Rowena, Jones, H. P., Jones, D. S., ...
One hundred and forty eight isolates of the genus Thermus, from neutral and alkaline hot water springs on four continents, have been screened for the presence of restriction endonuclease activity. An...
127 isolates of the genus Thermus, from neutral and alkaline hot water springs on four continents, have been screened for the presence of restriction endonuclease activity. An isolate (YS52) from...
Williams, R A, Rode, J, Dhillon, A P, Jarvis, L R, Skinner, J M, Jamal, O
Using a computed video image analysis system, the staining intensity for both neurone specific enolase (NSE) and S100 protein was measured in sections from 19 malignant melanomas and 16 benign...
Can histopathologists reliably diagnose molar pregnancy?
Howat, A J, Beck, S, Fox, H, Harris, S C, Hill, A S, Nicholson, C M, ...
AIMS--To assess the degree of difficulty in diagnosing partial mole by analysing intraobserver and interobserver agreement among a group of pathologists for these diagnoses. METHODS--Fifty mixed...
Sixteen isolates of thermophilic bacteria from the genus Thermus, isolated from neutral and alkaline hot water springs in the southwest region of Iceland, were tested for the presence of restriction...
We have recently screened 112 separate isolates of the genus Thermus, collected from neutral and alkaline hot water springs on four continents, for the presence of the Type-II restriction...
The fructose 1,6-bisphosphate [Fru(1,6)P2]-dependent lactate dehydrogenase in cells of Streptococcus uberis N.C.D.O. 2039 was purified by a procedure that included chromatography on DEAE-cellulose...
The porphyrin pigmentation of subspecies of Bacteroides melaninogenicus.
Shah, H N, Bonnett, R, Mateen, B, Williams, R A
Various subspecies of Bacteroides melaninogenicus differ in their pigmentation. Subsp. asaccharolyticus produces protohaem almost exclusively, subsp. intermedicus both protohaem and a smaller...
Cao, W, Lu, J, Welch, S G, Williams, R A, Barany, F
Two TaqI endonuclease (hereafter referred to as TaqI) isoschizomer genes, tsp32IR from Thermus species SM32 of Azores and tfiTok6A1I from T. filiformis Tok6A1 of New Zealand, were cloned in...
Wilson, S E, Robinson, G, Williams, R A, Stabile, B E, Cone, L, Sarfeh, I J, ...
Thirty-six major abdominal operations were performed on 35 Acquired Immune Deficiency Syndrome (AIDS) patients (33 men, two women). Twenty-two elective operations were indicated for diagnosis of...
Late failure in vein grafts: mediating factors in subendothelial fibromuscular hyperplasia.
Karayannacos, P E, Hostetler, J R, Bond, M G, Kakos, G S, Williams, R A, Kilman, J W, ...
Late failure of autologous vein grafts often results from excessive subendothelial fibromuscular hyperplasia. Varying factors have been implicated in this process, but the exact etiology remains...
Junior Hospital Staff Contract
Howell, John F., Lewis, Rhidian H., Giltinan, W. M., Mathew, Rowena, Jones, H. P., Jones, D. S., ...
Septic arthritis due to Pasteurella multocida complicating rheumatoid arthritis.
A patient with rheumatoid arthritis treated with corticosteroids developed a septic arthritis of her right knee. She had been bitten on her right leg by her pet cat 2 weeks earlier. Pasteurella...
In-vitro studies of ineffective erythropoiesis in rheumatoid arthritis
Williams, R. A., Samson, Diana, Tikerpae, J., Crowne, Helen, Gumpel, J. M.
Ineffective erythropoiesis was assessed in a series of 32 patients with rheumatoid arthritis by means of a new in-vitro method which measures the release of haem from a labelled cohort of...
The radiological effects of peripheral joint disease in 81 patients with seropositive juvenile chronic arthritis were studied retrospectively with an average length of follow up of 11 years. The...
African-American physicians and smoking cessation counseling.
Berman, B. A., Yancey, A. K., Bastani, R., Grosser, S. C., Staveren, A., Williams, R. A., ...
While African American physicians can play a key role in encouraging black patients who smoke to quit, little is known about the views and activities of these physicians with respect to antitobacco...