4,357 research outputs found

    New Constraints on the Yukawa-Type Hypothetical Interaction From The Recent Casimir Force Measurement

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    We calculate the constraints on the constants of hypothetical long-range interactions which follow from the recent measurement of the Casimir force. A comparison with previous constraints is given. The new constraints are up to a factor of 3000 stronger in some parameter regions .Comment: 10 pages, Latex, 2 figures, to appear in Phys. Rev.

    Outcomes of a specialist weight management programme in the UK national health service: prospective study of 1838 patients

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    Objectives There is limited evidence on the effectiveness of weight management programmes provided within routine healthcare and inconsistent use of outcome measures. Our aim was to evaluate a large National Health Service (NHS) weight management service and report absolute and proportional weight losses over 12 months.<p></p> Design Prospective observational study.<p></p> Setting Glasgow and Clyde Weight Management Service (GCWMS), which provides care for residents of NHS Greater Glasgow and Clyde area (population 1.2 million).<p></p> Participants All patients who began GCWMS between 1 October 2008 and 30 September 2009.<p></p> Interventions Structured educational lifestyle programme employing cognitive behavioural therapy, 600 kcal deficit diet, physical activity advice, lower calorie diet and pharmacotherapy.<p></p> Primary and secondary outcomes measures Baseline observation carried forward (BOCF), last observation carried forward (LOCF) and changes in programme completers reported using outcomes of absolute 5 kg and 5% weight losses and mean weight changes at a variety of time points.<p></p> Results 6505 referrals were made to GCWMS, 5637 were eligible, 3460 opted in and 1916 (34%) attended a first session. 78 patients were excluded from our analysis on 1838 patients. 72.9% of patients were women, mean age of all patients at baseline was 49.1 years, 43.3% lived in highly socioeconomically deprived areas and mean weights and body mass indices at baseline were 118.1 kg and 43.3 kg/m2, respectively. 26% lost ≥5 kg by the end of phase 1, 30% by the end of phase 2 and 28% by the end of phase 3 (all LOCF). Weight loss was more successful among men, particularly those ≤29 years old.<p></p> Conclusions Routine NHS weight management services may achieve moderate weight losses through a comprehensive evidence-based dietary, activity and behavioural approach including psychological care. Weight losses should be reported using a range of outcome measures so that the effectiveness of different services can be compared

    Observations of the Vortex Ring State

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    This paper considers the vortex ring state, a flow condition usually associated with the descent of a rotor into its own wake. The phenomenon is investigated through experiments on simple rotor systems, and a comparison is then made with observations of a flow generated by a specially designed open core, annular jet that generates a mean flow velocity profile similar to the mean flow in a rotor wake in hover. In an experimentally simulated descent, the jet flow generates a flow state that shares many features of the rotor vortex ring state

    Support Requirements and Effects of Supervision on Telephone Counsellors

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    The aim of this research was to examine the effects of the implementation of direct one-on-one supervision in a prominent telephone counselling organization and the support requirements of their telephone counsellors. Ninety-three telephone counsellors participated in this research. The results showed that more experienced telephone counsellors were more satisfied than less experienced telephone counsellors with the support offered by the organization. Furthermore, female telephone counsellors showed significantly more satisfaction with the support offered by the organisation than their male counterparts. Implications of these findings are discussed in relation to the organisation and other helping organisations within the wider community

    Mentoring as a career guidance activity: Fostering non-traditional career exploration for girls

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    This paper reports on a short term mentoring project conducted in the Australian state of Queensland to foster non-traditional career exploration for girls in the communications/informa - tion technology industry. The aim of the study was to evaluate the possibilities of a short term mentoring program to foster girls’interest in a non-traditional industry. In addition it sought to exam - ine the viability of mentoring as a career guidance activity in schools. The findings indicate that mentoring could be a worthy addition to the repertoire of career guidance activities offered by schools and that it is a valuable process in promoting non-traditional career exploration for girls

    A pitfall in the interpretation of plain abdnominal radiographs in neonatal intestinal perforation: a case report

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    <p>Abstract</p> <p>Introduction</p> <p>The recognition of neonatal intestinal perforation relies on identification of free gas in the peritoneum on plain abdominal radiographs and the associated clinical signs. The neonatal bowel takes several hours to fill with gas, potentially obscuring one of the radiological signs of bowel perforation in the neonate.</p> <p>Case presentation</p> <p>We describe the case of a male, Caucasian neonate, born prematurely at 35<sup>+2 </sup>weeks of gestation, who was suspected before birth to be at risk of intestinal perforation, based on antenatal ultrasound signs of bowel obstruction. However, the diagnosis of intestinal perforation after birth was initially delayed because the first abdominal radiograph, requested by the neonatal team, was taken too early in the clinical progression of the neonate's condition. As a consequence, this delayed referral to the paediatric surgical team and definitive management.</p> <p>Conclusion</p> <p>This case illustrates how consideration of the timing of abdominal radiographs in suspected intestinal perforation in the neonate may avoid misinterpretation of radiographic signs, thereby avoiding delays in referral and treatment in the crucial first few hours of life.</p

    Management of the Industry/Research Organisation Interface

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    The purpose of a consultancy undertaken to assess management processes in research projects to improve communication between research organisations and the mining industry through the development of an improved mode of operation and customer interface is discussed. The consultancy was conducted using the Nadler and Tushman Congruency Model of Organisational Behaviour to asses components of a project\u27s inputs, transformation process and outputs for their degree of congruence or \u27fit\u27. As an example the University of Queensland (UQ) managed ACARP Project \u27Maximising Coal Production in the Presence of Hydrogen Sulphide (H₂S) Seam Gas\u27 was used for illustration. An action research process was used to collect data on the project organisation and history, observations made of group project meetings and interviews undertaken with project staff and representatives of the mining industry and the UQ. The findings highlighted major differences in culture between the university and industry, inadequate planning and strategy development, ineffective intergroup communication, high and conflicting demands on time, and in some cases a poor fit between individuals and tasks. Recommendations proposed to address these issues are presented as two groups, those applicable to the current H₂S Project and those for future similar research projects. They involve improved strategies for intergroup and interpersonal communication, role clarification, project administration and organisational learning and assessment. The proposed interventions are relatively simple, easily implemented and inexpensive. They have the potential to improve the fit between the components of the organisation as well as between the organisation and its environment, enhance efficiency and effectiveness and improve the relationship between the university and industry to ensure future collaborative research projects and access to external funding

    Target product profiles for protecting against outdoor malaria transmission.

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    BACKGROUND\ud \ud Long-lasting insecticidal nets (LLINs) and indoor residual sprays (IRS) have decimated malaria transmission by killing indoor-feeding mosquitoes. However, complete elimination of malaria transmission with these proven methods is confounded by vectors that evade pesticide contact by feeding outdoors.\ud \ud METHODS\ud \ud For any assumed level of indoor coverage and personal protective efficacy with insecticidal products, process-explicit malaria transmission models suggest that insecticides that repel mosquitoes will achieve less impact upon transmission than those that kill them outright. Here such models are extended to explore how outdoor use of products containing either contact toxins or spatial repellents might augment or attenuate impact of high indoor coverage of LLINs relying primarily upon contact toxicity.\ud \ud RESULTS\ud \ud LLIN impact could be dramatically enhanced by high coverage with spatial repellents conferring near-complete personal protection, but only if combined indoor use of both measures can be avoided where vectors persist that prefer feeding indoors upon humans. While very high levels of coverage and efficacy will be required for spatial repellents to substantially augment the impact of LLINs or IRS, these ambitious targets may well be at least as practically achievable as the lower requirements for equivalent impact using contact insecticides.\ud \ud CONCLUSIONS\ud \ud Vapour-phase repellents may be more acceptable, practical and effective than contact insecticides for preventing outdoor malaria transmission because they need not be applied to skin or clothing and may protect multiple occupants of spaces outside of treatable structures such as nets or houses

    Dielectric multilayer waveguides for TE and TM mode matching

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    We analyse theoretically for the first time to our knowledge the perfect phase matching of guided TE and TM modes with a multilayer waveguide composed of linear isotropic dielectric materials. Alongside strict investigation into dispersion relations for multilayer systems, we give an explicit qualitative explanation for the phenomenon of mode matching on the basis of the standard one-dimensional homogenization technique, and discuss the minimum number of layers and the refractive index profile for the proposed device scheme. Direct applications of the scheme include polarization-insensitive, intermodal dispersion-free planar propagation, efficient fibre-to-planar waveguide coupling and, potentially, mode filtering. As a self-sufficient result, we present compact analytical expressions for the mode dispersion in a finite, N-period, three-layer dielectric superlattice.Comment: 13 pages with figure

    A qualitative study of the views of patients with long-term conditions on family doctors in Hong Kong

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    &lt;b&gt;Background&lt;/b&gt; Primary care based management of long-term conditions (LTCs) is high on the international healthcare agenda, including the Asia-Pacific region. Hong Kong has a 'mixed economy' healthcare system with both public and private sectors with a range of types of primary care doctors. Recent Hong Kong Government policy aims to enhance the management of LTCs in primary care possibly based on a 'family doctor' model. Patients' views on this are not well documented and the aim of the present study was to explore the views of patients with LTCs on family doctors in Hong Kong.&lt;p&gt;&lt;/p&gt; &lt;b&gt;Methods&lt;/b&gt; The views of patients (with a variety of LTCs) on family doctors in Hong Kong were explored. Two groups of participants were interviewed; a) those who considered themselves as having a family doctor, b) those who considered themselves as not having a family doctor (either with a regular primary care doctor but not a family doctor or with no regular primary care doctor). In-depth individual semi-structured interviews were carried out with 28 participants (10 with a family doctor, 10 with a regular doctor, and 8 with no regular doctor) and analysed using the constant comparative method.&lt;p&gt;&lt;/p&gt; &lt;b&gt;Results&lt;/b&gt; Participants who did not have a family doctor were familiar with the concept but regarded it as a 'luxury item' for the rich within the private healthcare system. Those with a regular family doctor (all private) regarded having one as important to their and their family's health. Participants in both groups felt that as well as the more usual family medicine specialist or general practitioner, traditional Chinese medicine practitioners also had the potential to be family doctors. However most participants attended the public healthcare system for management of their LTCs whether they had a family doctor or not. Cost, perceived need, quality, trust, and choice were all barriers to the use of family doctors for the management of their LTCs.&lt;p&gt;&lt;/p&gt; &lt;b&gt;Conclusions&lt;/b&gt; Important barriers to the adoption of a 'family doctor' model of management of LTCs exist in Hong Kong. Effective policy implementation seems unlikely unless these complex barriers are addressed
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