1,448 research outputs found

    Irradiation of refractory fuel compounds, uranium dioxide and UC, at high specific power to high burnups Final report

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    Irradiated fuel capsules containing uranium dioxide and uranium carbid

    An Arab Physician on Insanity

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    Are Male Employees Promoted More Often Than Females Who Are Just As Qualified?

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    The purpose of this research is to determine if males are promoted faster than females who are equally qualified.  Statistics based on empirical studies have shown that from the number of students who have pursued degrees from the undergraduate level to the master’s level, females outnumber males by far.  One can therefore only conclude (all things being equal) that academically there are more qualified females than males in the workplace.  However when you look on companies’ corporate websites, there are more males than females in top management positions. Data were collected from a sample of 130 professionals who varied by gender, age, education, work experience and minority or majority status. The results of this study demonstrate that gender discrimination is not a perceptual barrier in promotional opportunities. Implications for manager and employees are discussed

    Range-separated density-functional theory with random phase approximation: detailed formalism and illustrative applications

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    Using Green-function many-body theory, we present the details of a formally exact adiabatic-connection fluctuation-dissipation density-functional theory based on range separation, which was sketched in Toulouse, Gerber, Jansen, Savin and Angyan, Phys. Rev. Lett. 102, 096404 (2009). Range-separated density-functional theory approaches combining short-range density functional approximations with long-range random phase approximations (RPA) are then obtained as well-identified approximations on the long-range Green-function self-energy. Range-separated RPA-type schemes with or without long-range Hartree-Fock exchange response kernel are assessed on rare-gas and alkaline-earth dimers, and compared to range-separated second-order perturbation theory and range-separated coupled-cluster theory.Comment: 15 pages, 3 figures, 2 table

    The study of beta-gamma decay schemes using proportional counters

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    After a short introductory chapter, a critical summary of previous work is contained in chapter 2, and the need for coincidence methods in dealing with more complex decay schemes is discussed. The contents of these chapters are drawn mainly from original papers although use has been made of previous reviews. In chapter 3 an account is given of a search for possible low-energy quanta emitted in coincidence with beta-particles in the decay of tritium. This work formed the final part of a more extensive examination of the decay of tritium by Dr. G. M. Insch. The author's part in these coincidence experiments consisted in assisting Dr. Insch with the experimental work and with analysis of the results. Chapter 4 describes how the primary beta-spectrum of RaD was isolated for the first time. The design of this experiment and preparation of the source were due to Dr. Insch; the experiment itself was conducted solely by the author; the analysis of the results was shared equally between Jr. Insch and the author. Further elucidation of the decay scheme of KaD was practicable only by the aid of coincidence techniques. Chapter 5 gives an account of how a single-channel pulse analyser, built by the author during his early research programme, was developed to provide a satisfactory method of recording coincident events. The electronic circuits described here are due to Mr. R. Chiles although several modifications were made by the author. Application of the resulting equipment to the further study of the KaD decay scheme is described in chapter 6. The work described in this and in the succeeding chapters was conducted independently by the author although the method of approach was influenced by frequent discussions with Dr. S. C. Curran. The use of solid radioactive sources, as in the experiments with KaD, leads to some uncertainty regarding the effect of back-scattering of electrons from the source support, and data on back-scattering generally available were inconsistent. The author therefore initiated independent experiments upon this general problem. The results of these experiments, described in chapter 7, are in fairly good agreement with those obtained by earlier workers using a source of beta-particles placed outside a Geiger counter, but show marked disagreement with those which made use of a source inside a Geiger counter. Chapter 8 describes a series of experiments aimed at explaining this disagreement between the two types of Geiger counter measurement. This thesis is not presented in strict chronological order. Due to the duration of the experiments on back-scattering, these were to some extent conducted in parallel with the coincidence examination of the KaD decay scheme

    Neuropsychological functioning and chronic methadone use:a systematic review and meta-analysis

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    The authors would like to thank the NHS Fife Research and Development Department for supporting this project.Introduction: There is a presumption that neurocognition is commonly impaired in chronicmethadone exposed individuals (CM) when compared with healthy controls (HP).Additionally, it remains unclear if short term (< 1 year) abstinence (AP) is associated with an altered cognitive profile when compared with CM. Method: A random effect model approach was used on data assembled into the Comprehensive Meta-Analysis programme.Cohen’s d effect sizes and a significance levels of p<0.01 were calculated for each domain. Results: Data from a total cohort of 1063 CM, 412 AP and 879 HP participants, from 23 independent studies indicate global impairments in neurocognitive function in CM relative to HP participants. The smaller body of evidence comparing CM to AP participants is inconclusive. Conclusion: Methodological issues such as small sample sizes, heterogeneity and poor quality limited the interpretation of the results and does not address whether the observed impairments reflect co-morbid functioning, methadone-related sedation and/or other factors. Only higher quality longitudinal studies will permit confident interpretation of the results observed in this meta-analysis.PostprintPeer reviewe

    Towards understanding interactions between Sustainable Development Goals: the role of environment–human linkages

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    Only 10 years remain to achieve all Sustainable Development Goals (SDGs) globally, so there is a growing need to increase the effectiveness and efficiency of action by targeting multiple SDGs. The SDGs were conceived as an ‘indivisible whole’, but interactions between SDGs need to be better understood. Several previous assessments have begun to explore interactions including synergies and possible conflicts between the SDGs, and differ widely in their conclusions. Although some highlight the role of the more environmentally-focused SDGs in underpinning sustainable development, none specifically focuses on environment-human linkages. Assessing interactions between SDGs, and the influence of environment on them, can make an important contribution to informing decisions in 2020 and beyond. Here, we review previous assessments of interactions among SDGs, apply an influence matrix to assess pairwise interactions between all SDGs, and show how viewing these from the perspective of environment-human linkages can influence the outcome. Environment, and environment-human linkages, influence most interactions between SDGs. Our action-focused assessment enables decision makers to focus environmental management to have the greatest impacts, and to identify opportunities to build on synergies and reduce trade-offs between particular SDGs. It may enable sectoral decision makers to seek support from environment managers for achieving their goals. We explore cross-cutting issues and the relevance and potential application of our approach in supporting decision making for progress to achieve the SDGs
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