S. Allen

Publication List Details

Period

1977 - 2008

Number

113

Co-Authors

Diagnostic mirrors for ITER: A material choice and the impact of erosion and deposition on their performance (2008)

Litnovsky, A., Wienhold, P., Philipps, V., Sergienko, G., Schmitz, O., Kirschner, A., ...

Metal mirrors will be implemented in about half of the ITER diagnostics. Mirrors in ITER will have to withstand radiation loads, erosion by charge-exchange neutrals, deposition of impurities,...

High Altitude Arrhythmias (2008)

Woods, D.R., Allen, S., Betts, T.R., Gardiner, D., Montgomery, H., Morgan, J.M., ...

Objective: To investigate the cause and nature of palpitations occurring at high altitude. Methods: Implantable loop recorders were inserted subcutaneously in the left pectoral region of 9 healthy...

Tranquilliser use as a risk factor for falls in hospital patients (2006)

Vassallo, M., Vignaraja, R., Sharma, J., Briggs, R., Allen, S.

This study looked at associations of tranquilliser use and falls risk in a hospital population of confused and nonconfused patients. In a prospective observational study in a rehabilitation hospital...

Tranquilliser use as a risk factor for falls in hospital patients (2006)

Vassallo, M., Vignaraja, R., Sharma, J., Briggs, R., Allen, S.

This study looked at associations of tranquilliser use and falls risk in a hospital population of confused and nonconfused patients. In a prospective observational study in a rehabilitation hospital...

An X-ray Galaxy Cluster Survey for Investigations of Dark Energy (2005)

Haiman, Z., Allen, S., Bahcall, N., Bautz, M., Boehringer, H., Borgani, S., ...

The amount and nature of dark energy (DE) can be tightly constrained by measuring the spatial correlation features and evolution of a sample of ~ 100,000 galaxy clusters over the redshift range 0

The relationship of falls to injury among hospital in-patients (2005)

Vassallo, M., Vignaraja, R., Sharma, J.C., Briggs, R., Allen, S.

The need to reduce falls is driven by the need to reduce injury. If patients at risk of injury can be distinguished from the patients at risk of falls, there is the potential for a more effective...

The relationship of falls to injury among hospital in-patients (2005)

Vassallo, M., Vignaraja, R., Sharma, J. C., Briggs, R., Allen, S.

The need to reduce falls is driven by the need to reduce injury. If patients at risk of injury can be distinguished from the patients at risk of falls, there is the potential for a more effective...

Ultrafast creation and annihilation of space-charge domains in a semiconductor superlattice observed by use of terahertz fields (2004)

Klappenberger, Florian, Alekseev, K., Renk, Karl Friedrich, Scheuerer, R., Schomburg, Ekkehard, Allen, S., ...

We report an experimental study indicating ultrafast creation and annihilation of space-charge domains in a semiconductor superlattice under the action of a THz field. Our experiment was performed...

The effect of changing practice on fall prevention in a rehabilitative hospital: the Hospital Injury Prevention Study (2004)

Vassallo, M., Vignaraja, R., Sharma, J. C., Hallam, H., Binns, K., Briggs, R., ...

Objectives: To determine whether a change in practice to introduce a multidisciplinary fall-prevention program can reduce falls and injury in nonacute patients in a rehabilitation hospital. Design: A...

Evaluation of body weight as a predictive factor for transvenous ventricular defibrillation characteristics (2004)

Paisey, J.R., Betts, T., Allen, S., Morgan, J.M., Roberts, P.R.

Aims To investigate the correlation between body weight and defibrillation threshold (DFT) for transvenous lead systems using a porcine model. Methods and results Twenty-eight pigs were anaesthetised...

Mechanical Properties versus Morphology of Ordered Polymers. Volume 2. (2004)

Thomas, Edwin L., Farris, R. J., Hsu, S. L., Allen, S., Filippov, A.

Morphological techniques in conjunction with meachanical testing have been employed to elucidate the relationships between mechanical properties of rigid rod polymer fiber and file with sample...

Wnt signalling regulates myogenic differentiation in the developing avian wing (2003)

Anakwe, K., Robson, L., Hadley, J., Buxton, P., Church, V., Allen, S., ...

The limb musculature arises by delamination of premyogenic cells from the lateral dermomyotome. Initially the cells express Pax3 but, upon entering the limb bud, they switch on the expression of MyoD...

Comparison of coronary venous defibrillation with conventional transvenous internal defibrillation in man (2003)

Roberts, P.R., Paisey, J.R., Betts, T.R., Allen, S., Whitman, T., Bonner, M., ...

Animal studies have shown that defibrillation in coronary veins is more effective than in the right ventricle. We aimed to assess the feasibility of placing defibrillation electrodes in the middle...

Surface Chemistry of Ball Bearing Steels I. (2002)

Murday,J. S., Shafrin,E. G., Kingsbury,E. P., Allen,S.

The lifetime and performance characteristics of ball bearing surfaces and sliding contacts are determined in part by their surface chemistry. This work is in the nature of a survey to identify the...

Conserving approximations vs Two-Particle Self-Consistent Approach (2001)

Allen, S., Tremblay, A. -M. S., Vilk, Y. M.

The conserving approximation scheme to many-body problems was developed by Kadanoff and Baym using the functional-derivative approach. Another approach for the Hubbard model also satisfies...

Transport by intermittent convection in the boundary of the DIII-D tokamak (2001)

Boedo, J.A., Rudakov, D.L., Moyer, R.A., Krasheninnikov, S., Whyte, D.G., McKee, George R., ...

This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying...

Prediction of mortality by exercise echocardiography - A strategy for combination with the Duke treadmill score (2001)

Marwick, TH, Case, C, Vasey, C, Allen, S, Short, L, Thomas, JD

Background-In studies generally involving short follow-up, exercise echocardiography has been shown to predict composite end points. We sought to study the prediction of mortality with this test and...

Pairing fluctuations and pseudogaps in the attractive Hubbard model (2000)

Kyung, B., Allen, S., Tremblay, A. -M. S.

The two-dimensional attractive Hubbard model is studied in the weak to intermediate coupling regime by employing a non-perturbative approach. It is first shown that this approach is in quantitative...

Non-perturbative approach to the attractive Hubbard model (2000)

Allen, S., Tremblay, A. -M. S.

A non-perturbative approach to the single-band attractive Hubbard model is presented in the general context of functional derivative approaches to many-body theories. As in previous work on the...

Many-body Theory vs Simulations for the pseudogap in the Hubbard model (1999)

Moukouri, S., Allen, S., Lemay, F., Kyung, B., Poulin, D., Vilk, Y. M., ...

The opening of a critical-fluctuation induced pseudogap (or precursor pseudogap) in the one-particle spectral weight of the half-filled two-dimensional Hubbard model is discussed. This pseudogap,...

Single Molecule Biophysics Contributed Talks (1999)

S. Allen, M. C. Davies, C. J. Roberts, P. M. Williams

in our studies in the drug-design & drug-delivery areas. For example, force-measurements have been recorded between complementary strands of DNA before and after treatment with the DNA-binding agent...

Role of symmetry and dimension on pseudogap phenomena (1999)

Allen, S., Touchette, H., Moukouri, S., Vilk, Y. M., Tremblay, A. -M. S.

The attractive Hubbard model in d=2 is studied through Monte Carlo simulations at intermediate coupling. There is a crossover temperature $T_X$ where a pseudogap appears with concomitant precursors...

Survey of Technology with Possible Applications to United States Coast Guard Buoy Tenders. Volume 1. Technology Assessment. (1998)

Allen, S., Young, R., Bitting, K., Kohler, C., Walker, R.

This report is divided into three volumes. This volume I, 'Technology Assessment', contains state-of-the-art summaries and projected trends for major technology areas pertinent to buoy tender design....

Survey of Technology with Possible Applications to United States Coast Guard Buoy Tenders. Volume 2. Literature Abstracts. (1998)

Allen, S., Young, R., Bitting, K., Kohler, C., Walker, R.

This report is divided into three volumes. Volume I, 'Technology Assessment', contains state-of-the-art summaries and projected trends for major technology areas pertinent to buoy tender design. This...

Survey of Technology with Possible Applications to United States Coast Guard Buoy Tenders. Volume 3. Technology Characterization. (1998)

Allen, S., Young, R., Bitting, K., Kohler, C., Walker, R.

This report is divided into three volumes. Volume I, 'Technology Assessment', contains state-of-the-art summaries and projected trends for major technology areas pertinent to buoy tender design....

Attractive Hubbard model and single-particle pseudogap due to classical pairing fluctuations in two dimensions (1997)

Vilk, Y. M., Allen, S., Touchette, H., Moukouri, S., Chen, L., Tremblay, A. -M. S.

It is shown that in the two-dimensional attractive Hubbard model, the mean-field phase transition is replaced by a renormalized classical regime of fluctuations where a pseudogap opens up in the...

Transformation by bovine papillomavirus type 1 E6 is independent of transcriptional activation by E6. (1997)

Ned, R, Allen, S, Vande Pol, S

We have generated mutants of bovine papillomavirus type 1 E6 (BE6) that are defective for transcriptional activation and have analyzed these mutants for transformation of contact-inhibited cells and...

Picosecond GaAs Photodetector Monolithically Integrated with a High-Speed Sampling Circuit, (1992)

Kamegawa, Massayuki, Giboney, K., Karin, J., Allen, S., Case, M.

We have fabricated an optoelectronic sampling circuit for direct measurement of picosecond optical waveforms. The monolithic device incorporates a GaAs Schottky photodetector and a high-speed...

Phase transitions in proustite. (1983)

Allen, S.

Thesis (Ph. D.)--University of Oxford, 1983.

DIRECT MEASUREMENT OF VELOCITY OVERSHOOT BY HOT-ELECTRON, SUBMILLIMETER WAVE CONDUCTIVITY IN Si INVERSION LAYERS (1981)

Allen, S., Tsui, D., Derosa, F., Thornber, K., Wilson, B.

We describe broadband (5-30 cm-1) submillimeter wave measurements of the hot electron conductivity in a Si metal-oxide-semiconductor-field-effect-transistor (MOSFET), at low temperatures (~ 1.5 K )...

DIRECT MEASUREMENT OF VELOCITY OVERSHOOT BY HOT-ELECTRON, SUBMILLIMETER WAVE CONDUCTIVITY IN Si INVERSION LAYERS (1981)

Allen, S., Tsui, D., Derosa, F., Thornber, K., Wilson, B.

We describe broadband (5-30 cm-1) submillimeter wave measurements of the hot electron conductivity in a Si metal-oxide-semiconductor-field-effect-transistor (MOSFET), at low temperatures (~ 1.5 K )...

DIRECT MEASUREMENT OF VELOCITY OVERSHOOT BY HOT-ELECTRON, SUBMILLIMETER WAVE CONDUCTIVITY IN Si INVERSION LAYERS (1981)

Allen, S., Tsui, D., Derosa, F., Thornber, K., Wilson, B.

We describe broadband (5-30 cm-1) submillimeter wave measurements of the hot electron conductivity in a Si metal-oxide-semiconductor-field-effect-transistor (MOSFET), at low temperatures (~ 1.5 K )...

A MICROSCOPIC THEORY FOR DOMAIN WALL MOTION AND ITS EXPERIMENTAL VERIFICATION IN Fe-Al ALLOY DOMAIN GROWTH KINETICS (1977)

Cahn, J., Allen, S.

A microscopic theory for curved antiphase domain wall motion in ordered structures leads to a prediction that velocity is proportional to mean curvature. Unlike previous models, the velocity is not...

A MICROSCOPIC THEORY FOR DOMAIN WALL MOTION AND ITS EXPERIMENTAL VERIFICATION IN Fe-Al ALLOY DOMAIN GROWTH KINETICS (1977)

Cahn, J., Allen, S.

A microscopic theory for curved antiphase domain wall motion in ordered structures leads to a prediction that velocity is proportional to mean curvature. Unlike previous models, the velocity is not...

A MICROSCOPIC THEORY FOR DOMAIN WALL MOTION AND ITS EXPERIMENTAL VERIFICATION IN Fe-Al ALLOY DOMAIN GROWTH KINETICS (1977)

Cahn, J., Allen, S.

A microscopic theory for curved antiphase domain wall motion in ordered structures leads to a prediction that velocity is proportional to mean curvature. Unlike previous models, the velocity is not...

Use of Hoechst 33342 Staining To Detect Apoptotic Changes in Bovine Mononuclear Phagocytes Infected with Mycobacterium avium subsp. paratuberculosis

Allen, S., Sotos, J., Sylte, M. J., Czuprynski, C. J.

Mycobacterium avium subsp. paratuberculosis is an intracellular pathogen of macrophages that causes a chronic enteritis (Johne's disease) in ruminants. The purpose of this study was to determine...

Multicenter Evaluation of the Clostridium difficile TOX A/B TEST

Lyerly, D. M., Neville, L. M., Evans, D. T., Fill, J., Allen, S., Greene, W., ...

Clostridium difficile, the primary cause of nosocomial diarrhea in the United States and many other industrialized countries, is recognized as a major health concern because of its ability to cause...

Comparative antimicrobial activities of the penem WY-49605 (SUN5555) against recent clinical isolates from five U.S. medical centers.

Sewell, D, Barry, A, Allen, S, Fuchs, P, McLaughlin, J, Pfaller, M

The in vitro activity of WY-49605 (SUN5555) (WY) was compared with those of cefaclor, cefixime, and amoxicillin-clavulanic acid against 2,958 consecutive clinical isolates from five medical centers...

Transformation by bovine papillomavirus type 1 E6 is independent of transcriptional activation by E6.

Ned, R, Allen, S, Vande Pol, S

We have generated mutants of bovine papillomavirus type 1 E6 (BE6) that are defective for transcriptional activation and have analyzed these mutants for transformation of contact-inhibited cells and...

Cross-clade human immunodeficiency virus (HIV)-specific cytotoxic T-lymphocyte responses in HIV-infected Zambians.

Betts, M R, Krowka, J, Santamaria, C, Balsamo, K, Gao, F, Mulundu, G, ...

We have examined cross-clade HIV-specific cytotoxic T-lymphocyte (CTL) activity in peripheral blood of eight Zambian individuals infected with non-B-clade human immunodeficiency virus type 1 (HIV-1)....

Comparison of six serological assays for human immunodeficiency virus antibody detection in developing countries.

Nzaramba, D, Allen, S, Riggin, C H, Sprecher-Goldberger, S, Butzler, J P

Three commercially available assays for the detection of human immunodeficiency virus (HIV) antibodies-Vironostika enzyme immunoassay (EIA), Wellcozyme competitive EIA, and JLC Allaman indirect...

Characterization, in vitro susceptibility, and clinical significance of CDC group HB-5 from Rwanda.

Bogaerts, J, Verhaegen, J, Martinez Tello, W, Allen, S, Verbist, L, Van Dyck, E, ...

From June 1984 until July 1988, CDC group HB-5 isolates were recovered from the exudates of genital ulcers in 25 of 675 (3.6%) patients (204 women, 471 men) in Kigali, Rwanda. Among a group of 145...

Clinical comparison of a new automated infrared blood culture system with the BACTEC 460 system.

Jungkind, D, Millan, J, Allen, S, Dyke, J, Hill, E

A new blood culture instrument, the BACTEC (Johnston Laboratories, Inc., Towson, Md.) NR-660, which utilizes infrared detection of carbon dioxide from microbial metabolism, was compared with the...

Native low density lipoprotein-induced calcium transients trigger VCAM-1 and E-selectin expression in cultured human vascular endothelial cells.

Allen, S, Khan, S, Al-Mohanna, F, Batten, P, Yacoub, M

Low density lipoprotein (LDL) interactions with the endothelium are thought to play a major role in the development of atherosclerosis. The mechanism(s) involved are not fully understood, although...

Calnexin and calreticulin bind to enzymically active tissue-type plasminogen activator during biosynthesis and are not required for folding to the native conformation.

Allen, S, Bulleid, N J

The roles of the endoplasmic-reticulum lectins calnexin and calreticulin in the folding of tissue-type plasminogen activator (tPA) have been investigated using an in vitro translation system that...

The influence of epitope availability on atomic-force microscope studies of antigen-antibody interactions.

Allen, S, Davies, J, Davies, M C, Dawkes, A C, Roberts, C J, Tendler, S J, ...

The ability of the atomic-force microscope (AFM) to detect interaction forces between individual biological molecules has recently been demonstrated. In this study, force measurements have been...

Smoking cessation in women concerned about weight.

Pirie, P L, McBride, C M, Hellerstedt, W, Jeffery, R W, Hatsukami, D, Allen, S, ...

BACKGROUND. Weight gain after smoking cessation is often cited by women smokers as a primary reason for not attempting to quit smoking or for relapsing after a cessation attempt. METHODS. A...

Pregnancy and contraception use among urban Rwandan women after HIV testing and counseling.

Allen, S, Serufilira, A, Gruber, V, Kegeles, S, Carael, M, ...

OBJECTIVES. This study examined hormonal contraceptive use and pregnancy in urban Rwandan women, following human immunodeficiency virus (HIV) antibody testing and counseling. METHODS. A sample of...

Use of Hoechst 33342 Staining To Detect Apoptotic Changes in Bovine Mononuclear Phagocytes Infected with Mycobacterium avium subsp. paratuberculosis

Allen, S., Sotos, J., Sylte, M. J., Czuprynski, C. J.

Mycobacterium avium subsp. paratuberculosis is an intracellular pathogen of macrophages that causes a chronic enteritis (Johne's disease) in ruminants. The purpose of this study was to determine...