2,260 research outputs found
Demonstration of short-term plasticity in the dorsolateral prefrontal cortex with theta burst stimulation: a TMS-EEG study
No full textAbstract not availableSung Wook Chung, Benjamin P. Lewis, Nigel C. Rogasch, Takashi Saeki, Richard H. Thomson, Kate E. Hoy, Neil W. Bailey, Paul B. Fitzgeral
Joule-Thomson Expansion of Gas-Condensates: Literature review
No full textRecently it was communicated that during gas-condensate production in a North Sea gasfield strong heating of the production stream occurred instead of the expected cooling. This contradictory behaviour called for an investigation of the thermodynamics of these gas condensate reservoirs. It is expected that due to the high pressure and high temperature conditions in these gas-condensate reservoirs (pressures of approximately 1000 bar and temperatures of 100-200 °C), the Joule-Thomson coefficient will have a negative value and thus heating will take place at expansion; this is called the Joule-Thomson inversion effect. To ensure a safe operation and to ensure that downhole and surface equipment is specified according to downhole temperatures, it is required that pressure and temperature profiles can be accurately estimated for future productions. The present work is a literature review of what has been reported in the open literature with respect to the Joule-Thomson inversion effect and the heating of gas-condensates at expansion. Chapter 2 will give a general introduction to the Joule-Thomson effect. In chapter 3 the various methods of how to characterize the inversion curve are described and chapter 4 will discuss the calculation of the temperature changes due to expansion. The gas-condensate systems are dealt with in chapter 5 and finally in chapter 6 a summary is given and different aspects, which are important to predict temperature changes for gas-condensate systems, are considered.Applied SciencesApplied Thermodynamics and Phase Equilibri
Carbon and Hydrogen Isotope Fractionation of Benzene, Toluene, and o -Xylene during Chemical Oxidation by Persulfate
No full textExperiments were performed to investigate the carbon and hydrogen isotope fractionation of benzene, toluene, and o -xylene (BTX) during
chemical oxidation by unactivated persulfate at two concentrations (8 and 20 g/L). Carbon enrichment ( e
C
) values of −1.7 ± 0.1‰ for benzene,
−0.64 ± 0.1‰ for toluene and −0.36 ± 0.04‰ for o -xylene were obtained. No significant hydrogen enrichment ( e
H
) was observed for benzene,
while the hydrogen enrichment for toluene and o -xylene were −20 ± 3‰ and −23 ± 2‰, respectively. The dual isotope plot ( ∆ δ
13
C vs. ∆ δ
2
H) for
benzene and o -xylene revealed a distinct fractionation trend compared to the majority of the biodegradation data compiled from the literature;
however, no unique trend was observed for toluene. The significant carbon and/or hydrogen enrichment, and the distinct trend observed on the
dual isotope plot suggest that compound specific isotope analysis (CSIA) can potentially be used to monitor the chemical oxidation of BTX by
persulfate, and to distinguish treatment areas where persulfate or biodegradation reactions are occurring for benzene and o -xylene
Correction to 'Radiation belt electron precipitation into the atmosphere: recovery from a geomagnetic storm'
No full textInternational audienceCorrection to “Radiation belt electron precipitation intothe atmosphere: Recovery from a geomagnetic storm”Craig J. Rodger, Mark A. Clilverd, Neil R. Thomson, Rory J. Gamble, Annika Seppälä,Esa Turunen, Nigel P. Meredith, Michel Parrot, Jean‐André Sauvaud,and Jean‐Jacques BerthelierReceived 17 August 2010; accepted 19 August 2010; published 25 September 2010.Citation: Rodger, C. J., M. A. Clilverd, N. R. Thomson, R. J. Gamble, A. Seppälä, E. Turunen, N. P. Meredith, M. Parrot, J.‐A.Sauvaud, and J.‐J. Berthelier (2010), Correction to “Radiation belt electron precipitation into the atmosphere: Recovery from ageomagnetic storm,” J. Geophys. Res., 115, A09324, doi:10.1029/2010JA016038
C# Programming : From Problem Analysis to Program Design
No full textDiscover an expert blend of the programming principles and concepts and hands-on coding skills you need to create a strong professional foundation as a beginning C# programmer. The latest edition of C# PROGRAMMING: FROM PROBLEM ANALYSIS TO PROGRAM DESIGN from respected author Dr. Barbara Doyle provides a straightforward approach and understandable vocabulary that make it easy for you to grasp new programming concepts without distraction. This edition introduces a variety of fundamental programming concepts, from data types and expressions to arrays and collections, all using the latest version of today's popular C# language. New programming exercises and engaging, numbered examples throughout this edition reflect the latest updates in Visual Studio 2015 and C# 6.0, while learning objectives, case studies, and Coding Standards summaries in each chapter give you the knowledge and tools you need to master each key concept.xxxi+1000p.;19x23c
Ormond: or the secret witness. By the author of Wieland, Arthur Mervyn, &c. &c.
No full text[2],338,[2]p. ; 12⁰.The author of Wieland, Arthur Mervyn, &c. &c. = Charles Brockden Brown.Dedication signed: S. C.With a half-title and a final advertisement leaf.Reproduction of original from the British Library.Blakey, p.196English Short Title Catalog, ESTCT131855.Electronic data. Farmington Hills, Mich. : Thomson Gale, 2003. Page image (PNG). Digitized image of the microfilm version produced in Woodbridge, CT by Research Publications, 1982-2002 (later known as Primary Source Microfilm, an imprint of the Gale Group)
Details of development of the resource for adults with asthma in the RAISIN (randomized trial of an asthma internet self-management intervention) study
No full textBackground: around 300 million people worldwide have asthma and prevalence is increasing. Self-management can be effective in improving a range of outcomes and is cost effective, but is underutilised as a treatment strategy. Supporting optimum self-management using digital technology shows promise, but how best to do this is not clear. We aimed to develop an evidence based, theory informed, online resource to support self-management in adults with asthma, called ‘Living well with Asthma’, as part of the RAISIN (Randomized Trial of an Asthma Internet Self-Management Intervention) study. Methods: we developed Living well with Asthma in two phases.Phase 1: a low fidelity prototype (paper-based) version of the website was developed iteratively through input from a multidisciplinary expert panel, empirical evidence from the literature, and potential end users via focus groups (adults with asthma and practice nurses). Implementation and behaviour change theories informed this process. Phase 2: the paper-based designs were converted to a website through an iterative user centred process. Adults with asthma (n?=?10) took part in think aloud studies, discussing the paper based version, then the web-based version. Participants considered contents, layout, and navigation. Development was agile using feedback from the think aloud sessions immediately to inform design and subsequent think aloud sessions. Think aloud transcripts were also thematically analysed, further informing resource development. Results: the website asked users to aim to be symptom free. Key behaviours targeted to achieve this include: optimising medication use (including inhaler technique); attending primary care asthma reviews; using asthma action plans; increasing physical activity levels; and stopping smoking. The website had 11 sections, plus email reminders, which promoted these behaviours. Feedback on the contents of the resource was mainly positive with most changes focussing on clarification of language, order of pages and usability issues mainly relating to navigation difficulties. Conclusions: our multifaceted approach to online intervention development underpinned by theory, using evidence from the literature, co-designed with end users and a multidisciplinary panel has resulted in a resource which end users find relevant to their needs and easy to use. Living well with Asthma is undergoing evaluation within a randomized controlled trial<br/
Carbon isotope fractionation of chlorinated ethenes during oxidation by Fe 2+ activated persulfate
No full textThe increased use of persulfate (S 2O 82-) for in situ chemical oxidation to treat groundwater and soils contaminated by chlorinated hydrocarbon compounds (CHCs) requires unbiased methods to assess treatment performance. Stable carbon isotope analysis offers a potential tool for assessing the in situ treatment performance of persulfate at sites contaminated with CHCs. This study investigated the extent of C isotope fractionation during oxidation of tetrachloroethene (PCE), trichloroethene (TCE) and cis-dichloroethene (cis-DCE) by persulfate activated by ferrous ion (Fe 2+). An average carbon isotope enrichment factor ε bulk of -4.9‰ for PCE, -3.6‰ for TCE and -7.6‰ for cis-DCE were obtained in batch experiments. Variations in the initial S 2O 82-/Fe 2+/CHC molar ratios did not result in any significant differences in carbon isotope fractionation. The occurrence of carbon isotope fractionation during oxidation and the lack of dependence of enrichment factors upon the S 2O 82-/Fe 2+/CHC molar ratio demonstrate that carbon isotope analysis can potentially be used at contaminated sites as an additional technique to estimate treatment efficacy during oxidation of CHCs by Fe 2+ activated persulfate. © 2012 Elsevier B.V
Determining the need for an expanded fitness component in the Fire Science Program at Milwaukee Area Technical College
No full textIncludes bibliographical references
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