957 resultados para Royal Society of Literature (Great Britain)


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Objective - The objective of the research was to examine to what extent community pharmacists in Great Britain believed that their job was concerned with local public health issues. Methods - The project (Pharmacy and Public Health)received ethical approval from the Research Ethics Committee of the School of Life and Health Sciences at Aston University. After piloting, in August 2006 a self-completion postal questionnaire was sent to practicing community pharmacists in Great Britain (n=1998), with a follow-up to non-responders 4 weeks later. A final response rate of 51% (n=1023/1998) was achieved. Results - Respondents were asked to indicate their answer to the question “to what extent is your present job concerned with local public health issues?” on a three-point scale – “highly”, “slightly” or “not at all” concerned with public health. They were also asked to indicate whether they were pharmacy owners, employee pharmacists or self-employed locum pharmacists. Less than half (43%,n=384/898) of respondents answering both questions believed that their job was highly concerned with public health. A relationship was observed between employment status and the level to which a respondent believed that their job was concerned with public health (chi-square test with P=0.001). Over half of pharmacy owners (51%, n=68/134) considered that their job was highly concerned with public health compared to44% (n=193/443) of employee pharmacists and38% (n=123/321) of locum pharmacists. Conclusion - This research suggests that community pharmacists in Great Britain are not ‘fully engaged’ with public health. Pharmacy owners may feel more enfranchised in the public health movement than their employees and locums. Indeed, one-in-ten locums reported that their job was not at all concerned with public health which, as locum pharmacists constitute over a third of actively employed community pharmacists, could be limiting factor in any drive to strengthen the public health function of community pharmacists.

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Aim - To produce empirical evidence on the commitment to study pharmacy in terms of what motivates and influences students in their choice of subject and university. Design - Self-completion survey. Quantitative analysis by SPSS. Subjects and setting - Year 1 and year 4 undergraduates in schools of pharmacy in Great Britain. Results - The response rate was 35.2%. Students registered a high desire to study pharmacy; 73% of year 1 and 71% of year 4 placed it first priority at the time of application. Of those for whom it was not first choice, medicine was the preferred option. The two most important factors in choice were reputation of the school of pharmacy and reputation of the university. Conclusion - This study confirms that most applicants to study pharmacy were strongly committed to the subject. In addition, this study has allowed us to put an empirical figure to the proportion of students who at the time of applying for pharmacy would rather study medicine.

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The surface behaviour of materials is crucial to our everyday lives. Studies of the corrosive, reactive, optical and electronic properties of surfaces are thus of great importance to a wide range of industries including the chemical and electronics sectors. The surface properties of polymers can also be tuned for use in packaging, non stick coatings or for use in medical applications. Methods to characterise surface composition and reactivity are thus critical to the development of next generation materials. This report will outline the basic principles of X-ray photoelectron spectroscopy and how it can be applied to analyse the surfaces of inorganic materials. The role of XPS in understanding the nature of the active site in heterogeneous catalysts will also be discussed.

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Date of acceptance: 09/07/2015

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Date of acceptance: 09/07/2015

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Date of acceptance: 09/07/2015

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During the "Challenger" Deep-Sea Exploring Expedition a great many peculiar-looking manganese nodules or concretions were dredged from the floor of the ocean at great depths, chiefly in the Red Clay areas of the Pacific. In the present paper we propose to point out the distribution of the oxides of manganese in the geological series of rocks, in fresh and sea water, and in marine deposits, with special reference to our explorations in the lochs of the west of Scotland; to give an account of investigations undertaken to ascertain the source of the manganese present in marine deposits in the form of the higher oxides, and thereafter to discuss the various views that have been advanced to explain the formation and distribution of manganese concretions in marine deposits in general.

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Purpose: affecting approximately one in four adults over the age of 40 years in the UK, knee pain is the most common presenting feature of osteoarthritis (OA). Despite the plethora of studies that have investigated the factors associated with the onset of knee pain in the sedentary population, relatively little is known about the prevalence and occupational factors associated with knee pain in an athletic sporting population. This study aimed to determine in Great Britain’s (GB) Olympians, aged 40 years and older, (1) the individual factors.

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Nucleobase-functionalized polymers are widely used in the fields of supramolecular chemistry and self-assembly, and their development for biomedical applications is also an area of interest. They are usually synthesized by tedious multistep procedures. In this study, we assess adenine as an organoinitiator/organocatalyst for the ring-opening polymerization of lactide. L-Lactide can be quantitatively polymerized in the presence of adenine. Reaction conditions involving short reaction times and relatively low temperatures enable the access to adenine end-capped polylactide in a simple one-step procedure, in bulk, without additional catalyst. DFT calculations show that the polymerization occurs via hydrogen bond catalysis. The mechanism involves (i) a hydrogen bond between the NH9 of adenine and the carbonyl moiety of lactide, leading to an electron deficient carbon atom, and (ii) a second hydrogen bond between the N3 of adenine and the NH2 of a second adenine molecule, followed by a nucleophilic attack of the latter activated amine on the former electron deficient carbon on the monomer. For longer reaction times and higher temperatures, macrocyclic species are formed, and a mechanism involving the imidazole ring of adenine is proposed based on literature studies. Depending on the reaction conditions, adenine can thus be considered as an organoinitiator or an organocatalyst for the ring-opening polymerization of lactide.

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The mixed double-decker Eu\[Pc(15C5)4](TPP) (1) was obtained by base-catalysed tetramerisation of 4,5-dicyanobenzo-15-crown-5 using the half-sandwich complex Eu(TPP)(acac) (acac = acetylacetonate), generated in situ, as the template. For comparative studies, the mixed triple-decker complexes Eu2\[Pc(15C5)4](TPP)2 (2) and Eu2\[Pc(15C5)4]2(TPP) (3) were also synthesised by the raise-by-one-story method. These mixed ring sandwich complexes were characterised by various spectroscopic methods. Up to four one-electron oxidations and two one-electron reductions were revealed by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). As shown by electronic absorption and infrared spectroscopy, supramolecular dimers (SM1 and SM3) were formed from the corresponding double-decker 1 and triple-decker 3 in the presence of potassium ions in MeOH/CHCl3.

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A combination of X-ray diffraction, thermal analysis and Raman spectroscopy was employed to characterise the ageing of alumina hydrolysates synthesised from the hydrolysis of anhydrous tri-sec-butoxyaluminium(III). X-Ray diffraction showed that the alumino-oxy(hydroxy) hydrolysates were pseudoboehmite. For boehmite the lamellar spacings are in the b direction and multiple d(020) peaks are observed for the un-aged hydrolysate. After 4 h of ageing, a single d(020) peak is observed at 6.53 Å. Thermal analysis showed five endotherms at 70, 140, 238, 351 and 445°C. These endotherms are attributed to the dehydration and dehydroxylation of the boehmite-like hydrolysate. Raman spectroscopy shows the presence of bands for the washed hydrolysates at 333, 355, 414, 455, 475, 495, 530 and 675 cm–1. These bands are attributed to pseudoboehmite. Ageing of the hydrolysates results in an increase in the crystallite size of the pseudoboehmite.

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Titanium dioxide nanocrystals are an important commercial product used primarily in white pigments and abrasives, however, more recently the anatase form of TiO2 has become a major component in electrochemical and photoelectrochemical devices. An important property of titanium dioxide nanocrystals for electrical applications is the degree of crystallinity. Numerous preparation methods exist for the production of highly crystalline TiO2 particles. The majority of these processes require long reaction times, high pressures and temperatures (450–1400 °C). Recently, hydrothermal treatment of colloidal TiO2 suspensions has been shown to produce quality crystalline products at low temperatures (<250 °C). In this paper we extend this idea utilising a direct microwave heating source. A comparison between convection and microwave hydrothermal treatment of colloidal TiO2 is presented. The resulting highly crystalline TiO2 colloids were characterised using Raman spectroscopy, XRD, TEM, and electron diffraction. The results show that the microwave treatment of colloidal TiO2 gives comparable increases in crystallinity with respect to normal hydrothermal treatments while requiring significantly less time and energy than the hydrothermal convection treatment.