We investigate the weak decay of uniformly accelerated protons in the context of standard quantum field theory. Because the mean proper lifetime of a particle is a scalar, the same value for this observable must be obtained in the inertial and coaccelerated frames. We are only able to achieve this equality by considering the Fulling-Davies-Unruh effect. This reflects the fact that the Fulling-D...

Surface electromyographic (sEMG) activity of the biceps muscle was recorded from 13 subjects. Data was recorded while subjects performed dynamic contraction until fatigue and the signals were segmented into two parts (Non-Fatigue and Fatigue). An evolutionary algorithm was used to determine the elbow angles that best separate (using Davies-Bouldin Index, DBI) both Non-Fatigue and Fatigue segmen...

Finding a data clustering in a data set is a challenging task since algorithms usually depend on the adopted inter-cluster distance as well as the employed definition of cluster diameter. The work described in this paper approaches a well-known agglomerative clustering algorithm named AGNES (Agglomerative Nesting), in regards to its performance on three case studies namely, datasets formed by c...

Andreas Kyriacou, MBChB, MRCP; Zachary I. Whinnett, MRCP, PhD; Sayan Sen, MBBS, MRCP; Punam A. Pabari, MBChB, MRCP; Ian Wright, BSc; Richard Cornelussen, PhD; David Lefroy, MB, BChir, MA; D. Wyn Davies, MD, MBChB; Nicholas S. Peters, MD, MBChB, FRCP; Prapa Kanagaratnam, MRCP, PhD; Jamil Mayet, MD, MBA, FESC, FRCP; Alun D. Hughes, MBBS, PhD; Darrel P. Francis, MA, MD, FRCP; Justin E. Davies, MRC...

Endomyocardial fibrosis (EMF) is a relatively common form of heart disease in Uganda and accounts for about 14 per cent of subjects with clinical cardiovascular disease admitted to Mulago Hospital, Kampala (Shaper and Williams, 1960) and for 10 per cent of heart disease seen at necropsy (Davies, 1961). Though there have been pathological and clinical descriptions of this disorder (Davies, 1948;...

Over the past 50 years, electron-nuclear double resonance (ENDOR) has become a fairly ubiquitous spectroscopic technique, allowing the study of spin transitions for nuclei which are coupled to electron spins. However, the low spin number sensitivity of the technique continues to pose serious limitations. Here we demonstrate that signal intensity in a pulsed Davies ENDOR experiment depends stron...

Abstract Wyndham Lloyd-Davies – pioneering clinician, teacher, bon viveur and urologist to the stars.

We use Redfield’s relaxation theory in the Davies formulation to study primary charge separation reactions in bacterial photosynthesis. The specific model studied is the standard one (spin-boson), with three states for the system, harmonic oscillators for the bath, and linear ohmic system–bath coupling. The Redfield–Davies formulation, which is equivalent to the secular approximation, is Markov...

The population of Wales can be divided into two parts, the Welsh and the non-Welsh, who differ in some genetic characters (Ashley and Davies, 1966a) and in their susceptibility to a number of common diseases (Ashley and Davies, 1966b; Ashley, 1966, 1967a, b, c). Both moieties of this population share the environment of the Principality of Wales and have similar occupations and similar social st...

The professor of primary healthcare talks to Marika Davies about being the first woman throughout her academic career