12 results on '"Davies RO"'
Search Results
2. Brexit in Air Transport after 2020
- Author
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Brezonakova Andrea, Badanik Benedikt, and Davies Robin
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globalization ,brexit ,aviation ,airline industry ,eu-uk relationships ,Social Sciences - Abstract
Research background: The authors are providing an update to the ongoing process of Brexit and the negotiations between the UK and the EU, following their own previous research in this area. Purpose of the article: In 2019, the aviation sector in the UK ranked as the third largest in the world. London Heathrow, a hub to many UK airlines, ranked as Europe’s busiest airport and seventh busiest in the world. [1] Brexit negotiations between the UK and the EU, in the context of globalization and the existing deep ties within the EU institutions, presents a complex task. Following the Brexit referendum in June 2016, where the majority of the electorate decided that Britain should leave the EU, events have progressed significantly by the UK leaving the EU formally at 23:59 on the 31st January 2020. However, negotiations are still ongoing and when it comes to Aviation, the outcome in many key areas is still uncertain. Methods: The article is based on data and information collation as well as the authors’ experience within the industry. Findings & Value added: Once the transition period terminates on the 31st December 2020, Brexit will have a significant influence on trading in the European domestic market and globally on the international market. This paper discusses available options for the UK and the EU that follow from existing decisions in the Brexit bill, as well as outlining possible future developments. Furthermore, in light of the existing threats to the Aviation industry from the ongoing COVID-19 pandemic and the cessation of air travel for many weeks, adjustments to the Brexit plan might be required.
- Published
- 2021
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3. An overview of the clinical pharmacology of enalapril.
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Davies, RO, Gomez, HJ, Irvin, JD, and Walker, JF
- Abstract
Enalapril maleate is a prodrug which when administered orally is hydrolysed to release the active converting enzyme inhibitor enalaprilat. Enalapril maleate is 60% absorbed and 40% bioavailable as enalaprilat. Both compounds undergo renal excretion without further metabolism. The functional half-life for accumulation of enalaprilat is 11 h, and this is increased in the presence of a reduction in renal function. Inhibition of converting enzyme inhibition is associated with reductions in plasma angiotensin II and plasma aldosterone, and with increases in plasma renin activity and plasma angiotensin I. Acute and chronic effects have been reviewed. When given with hydrochlorothiazide, enalapril attenuates the secondary aldosteronism and ameliorates the hypokalaemia from diuretics. Both acutely and chronically in patients with essential hypertension, enalapril reduced blood pressure with a rather flat dose-response curve. No evidence of a triphasic response such as seen with captopril has been demonstrated with enalapril, and blood pressure returns smoothly to pretreatment levels when the drug is abruptly discontinued. Once- or twice-daily dosing gives similar results. The antihypertensive effects of enalapril are potentiated by hydrochlorothiazide. Haemodynamically, blood pressure reduction is associated with a reduced peripheral vascular resistance and an increase in cardiac output and stroke volume with little change in heart rate. Renal vascular resistance decreases, and renal blood flow may increase without an increase in glomerular filtration in patients with normal renal function. In patients with essential hypertension and glomerular filtration rates below 80 ml/min/m2, both renal blood flow and glomerular filtration rates may increase. [ABSTRACT FROM AUTHOR]
- Published
- 1984
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4. Tolerance and safety of enalapril.
- Author
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McFate Smith, W, Davies, RO, Gabriel, MA, Kramsch, DM, Moncloa, F, Rush, JE, and Walker, JF
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Enalapril is the result of a targeted research programme to develop a non-mercapto converting enzyme inhibitor with a long duration of action and an improved safety profile for use in the therapy of hypertension and congestive heart failure. Over 3500 patients world-wide have received enalapril or enalaprilat. Long-term experience at present includes over 2500 patients. While enalapril and captopril produce similar efficacy, enalapril is better tolerated and appears not to be associated with occurrence of captopril-type side-effects, particularly the skin rash, taste loss, leukopenia and proteinuria. Enalapril and other converting enzyme inhibitors may be associated with renal insufficiency when given to patients with bilateral renovascular hypertension. [ABSTRACT FROM AUTHOR]
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- 1984
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5. An experimental and numerical study on vascular self-healing cementitious materials
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Jefferson Anthony, Selvarajoo Tharmesh, Freeman Brubeck, and Davies Robert
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Engineering (General). Civil engineering (General) ,TA1-2040 - Abstract
This paper gives an overview of a combined experimental-numerical study on vascular self-healing (SH) systems for cementitious composite materials. The work aimed to bridge the gap between numerical and experimental investigations for this type of SH system and to provide a set of data for developing, calibrating and validating a finite element model for these materials. The study investigated both healing-agent transport and mechanical damage-healing processes, including healing-agent curing. The experimental programme included mechanical tests on notched concrete beams and compact direct-tension specimens with inbuilt vascular healing systems, as well as tests to measure the transport properties of healing-agent within discrete concrete cracks and through the concrete matrix. The new coupled model employs elements with embedded strong discontinuities to simulate cracks and mechanical healing behaviour. A damage-healing constitutive model is described that simulates multiple damage-healing ‘events’. This mechanical model is coupled to discrete and continuum flow models that simulate healing-agent transport. The transport model accounts for pressurised and capillary flow, as well as curing-dependent flow properties. The main focus of this contribution is to show how these parallel programmes of work were combined so that the experimental observations guided the numerical developments and modelling questions were answered using experimental findings.
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- 2019
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6. Engineering properties of Gbafilo (Chrysobalanus icaco) fruits and kernels preparatory to primary processing
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Davies Rotimi Moses and Zibokere Daukiye Samuel
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gbafilo ,sphericity ,surface area ,true density ,bulk density. ,Agriculture - Abstract
The aim of the study was to determine the physical properties of gbafi lo fruit and kernel, namely, axial dimension, geometrical and arithmetic mean diameter, sphericity, aspect ratio, 1000 unit mass, surface area, true and bulk density, porosity angle of repose and coeffi cient of static friction. Investigation of physical properties of gbafi lo (Chrysobalanus icaco) is important for the design of appropriate equipment for processing, transporting, cleaning, sorting, packaging and storage processes. The mean length, width and thickness of gbafi lo fruit (Chrysobalanus icaco) were determined at 8.3% moisture content (d.b.). The analysis of variance showed that variations in the values obtained for fruit and kernel for axial dimensions were signifi cantly different at 5% probability level. The arithmetic and geometric mean diameter for gbafi lo fruit were 24.95 mm and 24.74 mm. The sphericity, surface area and as well as 1 000 unit mass of gbafi lo kernel were 0.82, 1 056.70 mm2 and 2 804.64 g. True and bulk densities were 989.19 kg/m-3 and 652.53 kg/m-3 for kernel. Angle of static friction of gbafi lo fruit and kernel were 19.34° and 17.61°. Data obtained were subjected to analysis of variance (ANOVA) and Duncan Multiple Range (DMR) using Statistical Analysis System. The static coeffi cient of friction of plywood structural surface was observed to be the highest followed by galvanized steel sheet and glass. This is an indication that plywood interior lining would not be suitable material for chute design. All the gbafi lo fruit and kernel parameters investigated were signifi cantly different (P < 0.05). This fi nding could therefore be useful in the design and fabrication of gbafi lo processing machines.
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- 2012
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7. The efficacy of antibiotics against Propionibacterium acnes biofilm infections on spinal implant material
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Freeman Brian, Tucker Emily, Davies Robert, Clement Rhys, Ashraf Waheed, and Bayston Roger
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Neurology. Diseases of the nervous system ,RC346-429 - Published
- 2005
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8. Predicting the outer membrane proteome of Pasteurella multocida based on consensus prediction enhanced by results integration and manual confirmation
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E-komon Teerasak, Burchmore Richard, Herzyk Pawel, and Davies Robert
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Computer applications to medicine. Medical informatics ,R858-859.7 ,Biology (General) ,QH301-705.5 - Abstract
Abstract Background Outer membrane proteins (OMPs) of Pasteurella multocida have various functions related to virulence and pathogenesis and represent important targets for vaccine development. Various bioinformatic algorithms can predict outer membrane localization and discriminate OMPs by structure or function. The designation of a confident prediction framework by integrating different predictors followed by consensus prediction, results integration and manual confirmation will improve the prediction of the outer membrane proteome. Results In the present study, we used 10 different predictors classified into three groups (subcellular localization, transmembrane β-barrel protein and lipoprotein predictors) to identify putative OMPs from two available P. multocida genomes: those of avian strain Pm70 and porcine non-toxigenic strain 3480. Predicted proteins in each group were filtered by optimized criteria for consensus prediction: at least two positive predictions for the subcellular localization predictors, three for the transmembrane β-barrel protein predictors and one for the lipoprotein predictors. The consensus predicted proteins were integrated from each group into a single list of proteins. We further incorporated a manual confirmation step including a public database search against PubMed and sequence analyses, e.g. sequence and structural homology, conserved motifs/domains, functional prediction, and protein-protein interactions to enhance the confidence of prediction. As a result, we were able to confidently predict 98 putative OMPs from the avian strain genome and 107 OMPs from the porcine strain genome with 83% overlap between the two genomes. Conclusions The bioinformatic framework developed in this study has increased the number of putative OMPs identified in P. multocida and allowed these OMPs to be identified with a higher degree of confidence. Our approach can be applied to investigate the outer membrane proteomes of other Gram-negative bacteria.
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- 2012
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9. The effect of real-time CPR feedback and post event debriefing on patient and processes focused outcomes: A cohort study: trial protocol
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Gao Fang, Woolley Sarah, Quinton Sarah, Davies Robin P, Perkins Gavin D, Abella Ben, Stallard Nigel, and Cooke Matthew W
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cardiac arrest ,cardiopulmonary resuscitation ,defibrillation ,emergency medicine ,guideline adherence ,quality ,resuscitation ,Medical emergencies. Critical care. Intensive care. First aid ,RC86-88.9 - Abstract
Abstract Background Cardiac arrest affects 30-35, 000 hospitalised patients in the UK every year. For these patients to be given the best chance of survival, high quality cardiopulmonary resuscitation (CPR) must be delivered, however the quality of CPR in real-life is often suboptimal. CPR feedback devices have been shown to improve CPR quality in the pre-hospital setting and post-event debriefing can improve adherence to guidelines and CPR quality. However, the evidence for use of these improvement methods in hospital remains unclear. The CPR quality improvement initiative is a prospective cohort study of the Q-CPR real-time feedback device combined with post-event debriefing in hospitalised adult patients who sustain a cardiac arrest. Methods/design The primary objective of this trial is to assess whether a CPR quality improvement initiative will improve rate of return of sustained spontaneous circulation in in-hospital-cardiac-arrest patients. The study is set in one NHS trust operating three hospital sites. Secondary objectives will evaluate: any return of spontaneous circulation; survival to hospital discharge and patient cerebral performance category at discharge; quality of CPR variables and cardiac arrest team factors. Methods: All three sites will have an initial control phase before any improvements are implemented; site 1 will implement audiovisual feedback combined with post event debriefing, site 2 will implement audiovisual feedback only and site 3 will remain as a control site to measure any changes in outcome due to any other trust-wide changes in resuscitation practice. All adult patients sustaining a cardiac arrest and receiving resuscitation from the hospital cardiac arrest team will be included. Patients will be excluded if; they have a Do-not-attempt resuscitation order written and documented in their medical records, the cardiac arrest is not attended by a resuscitation team, the arrest occurs out-of-hospital or the patient has previously participated in this study. The trial will recruit a total of 912 patients from the three hospital sites. Conclusion This trial will evaluate patient and process focussed outcomes following the implementation of a CPR quality improvement initiative using real-time audiovisual feedback and post event debriefing. Trial registration ISRCTN56583860
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- 2011
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10. Mannose-binding lectin genotypes: lack of association with susceptibility to thoracic empyema
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Moore Catrin E, Davies Christopher WH, Maskell Nicholas A, Rautanen Anna, Khor Chiea C, Vannberg Fredrik O, Chapman Stephen J, Day Nicholas P, Crook Derrick W, Davies Robert JO, and Hill Adrian VS
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Internal medicine ,RC31-1245 ,Genetics ,QH426-470 - Abstract
Abstract Background The role of the innate immune protein mannose-binding lectin (MBL) in host defence against severe respiratory infection remains controversial. Thoracic empyema is a suppurative lung infection that arises as a major complication of pneumonia and is associated with a significant mortality. Although the pathogenesis of thoracic empyema is poorly understood, genetic susceptibility loci for this condition have recently been identified. The possible role of MBL genotypic deficiency in susceptibility to thoracic empyema has not previously been reported. Methods To investigate this further we compared the frequencies of the six functional MBL polymorphisms in 170 European individuals with thoracic empyema and 225 healthy control individuals. Results No overall association was observed between MBL genotypic deficiency and susceptibility to thoracic empyema (2 × 2 Chi square = 0.02, P = 0.87). Furthermore, no association was seen between MBL deficiency and susceptibility to the Gram-positive or pneumococcal empyema subgroups. MBL genotypic deficiency did not associate with progression to death or requirement for surgery. Conclusions Our results suggest that MBL genotypic deficiency does not associate with susceptibility to thoracic empyema in humans.
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- 2010
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11. Evolution of the leukotoxin promoter in genus Mannheimia
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Bisgaard Magne, Christensen Henrik, Frey Joachim, Kuhnert Peter, Davies Robert L, Pedersen Anders G, Larsen Jesper, and Olsen John E
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Evolution ,QH359-425 - Abstract
Abstract Background The Mannheimia species encompass a wide variety of bacterial lifestyles, including opportunistic pathogens and commensals of the ruminant respiratory tract, commensals of the ovine rumen, and pathogens of the ruminant integument. Here we present a scenario for the evolution of the leukotoxin promoter among representatives of the five species within genus Mannheimia. We also consider how the evolution of the leukotoxin operon fits with the evolution and maintenance of virulence. Results The alignment of the intergenic regions upstream of the leukotoxin genes showed significant sequence and positional conservation over a 225-bp stretch immediately proximal to the transcriptional start site of the lktC gene among all Mannheimia strains. However, in the course of the Mannheimia genome evolution, the acquisition of individual noncoding regions upstream of the conserved promoter region has occurred. The rate of evolution estimated branch by branch suggests that the conserved promoter may be affected to different extents by the types of natural selection that potentially operate in regulatory regions. Tandem repeats upstream of the core promoter were confined to M. haemolytica with a strong association between the sequence of the repeat units, the number of repeat units per promoter, and the phylogenetic history of this species. Conclusion The mode of evolution of the intergenic regions upstream of the leukotoxin genes appears to be highly dependent on the lifestyle of the bacterium. Transition from avirulence to virulence has occurred at least once in M. haemolytica with some evolutionary success of bovine serotype A1/A6 strains. Our analysis suggests that changes in cis-regulatory systems have contributed to the derived virulence phenotype by allowing phase-variable expression of the leukotoxin protein. We propose models for how phase shifting and the associated virulence could facilitate transmission to the nasopharynx of new hosts.
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- 2009
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12. A Machine Vision Quality Control System for Industrial Acrylic Fibre Production
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Heleno Paulo, Davies Roger, Correia Bento A Brázio, and Dinis João
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quality control ,machine vision ,textile industry ,Telecommunication ,TK5101-6720 ,Electronics ,TK7800-8360 - Abstract
This paper describes the implementation of INFIBRA, a machine vision system used in the quality control of acrylic fibre production. The system was developed by INETI under a contract with a leading industrial manufacturer of acrylic fibres. It monitors several parameters of the acrylic production process. This paper presents, after a brief overview of the system, a detailed description of the machine vision algorithms developed to perform the inspection tasks unique to this system. Some of the results of online operation are also presented.
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- 2002
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