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- Edberg, Richard, et al.
(author)
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Dipolar spin ice under uniaxial pressure
- 2019
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In: Physical Review B. - : American Physical Society. - 2469-9950 .- 2469-9969. ; 100:14
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Journal article (peer-reviewed)abstract
- The magnetically frustrated spin ice family of materials is host to numerous exotic phenomena such as magnetic monopole excitations and macroscopic residual entropy extending to low temperature. A finite-temperature ordering transition in the absence of applied fields has not been experimentally observed in the classical spin ice materials Dy2Ti2O7 and Ho2Ti2O7. Such a transition could be induced by the application of pressure, and in this work we consider the effects of uniaxial pressure on classical spin ice systems. Theoretically, we find that the pressure-induced ordering transition in Dy2Ti2O7 is strongly affected by the dipolar interaction. We also report measurements of the neutron structure factor of Ho2Ti2O7 under pressure and compare the experimental results to the predictions of our theoretical model.
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| 7. |
- Edberg, Richard, et al.
(author)
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Effects of uniaxial pressure on the spin ice Ho2Ti2O7
- 2020
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In: Physical Review B. - : American Physical Society. - 2469-9950 .- 2469-9969. ; 102:18
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Journal article (peer-reviewed)abstract
- The spin ice materials Ho2Ti2O7 and Dy2Ti2O7 are experimental and theoretical exemplars of highly frustrated magnetic materials. However, the effects of applied uniaxial pressure are not well studied, and here we report magnetization measurements of Ho2Ti2O7 under uniaxial pressure applied in the [001], [111], and [110] crystalline directions. The basic features are captured by an extension of the dipolar spin ice model. We find a good match between our model and measurements with pressures applied along two of the three directions, and we extend the framework to discuss the influence of crystal misalignment for the third direction. The parameters determined from the magnetization measurements reproduce neutron scattering measurements that we perform under uniaxial pressure applied along the [110] crystalline direction. In the detailed analysis, we include the recently verified susceptibility dependence of the demagnetizing factor. Our work demonstrates the application of a moderate applied pressure to modify the magnetic interaction parameters. The knowledge can be used to predict critical pressures needed to induce new phases and transitions in frustrated materials, and in the case of Ho2Ti2O7 we expect a transition to a ferromagnetic ground state for uniaxial pressures above 3.3 GPa.
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- Sandberg, L. o., et al.
(author)
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Design, calibration, and performance of a uniaxial pressure cell for neutron scattering studies of quantum magnetism
- 2023
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In: Review of Scientific Instruments. - : AIP Publishing. - 0034-6748 .- 1089-7623. ; 94:10
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Journal article (peer-reviewed)abstract
- We provide an overview of a pressure cell designed to apply uniaxial pressure to single crystals for the study, by neutron scattering techniques, of strongly correlated magnetic systems and, in particular, quantum magnets. A detailed overview of the pressure cell components, their requirements, and links to the scientific and technical specifications are presented. The pressure cell is able to accommodate a 200 mm(3) single crystal that can be pressurized up to 2 GPa at cryogenic temperatures. The pressure cell is consistent with the requirements of inelastic neutron scattering and, importantly, neutron polarization analysis. A particular strength of the uniaxial pressure cell is the highly uniform and low background for a wide scattering angle of 360(degrees) horizontally and +/- 20(degrees) vertically. We show the performance of the uniaxial pressure cell using a relevant neutron scattering instrument, the polarized diffuse scattering instrument, D7. The experiments confirm that the cell complies with the scientific and technical requirements. This uniaxial pressure cell will provide a useful additional tool in the sample environment suite available for the study of quantum magnetism.
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- Keefer, Laurie, et al.
(author)
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Centrally Mediated Disorders of Gastrointestinal Pain.
- 2016
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In: Gastroenterology. - : Elsevier BV. - 1528-0012 .- 0016-5085. ; 150:6, s. 1408-1419
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Journal article (peer-reviewed)abstract
- Centrally Mediated Abdominal Pain Syndrome (CAPS), formerly known as Functional Abdominal Pain Syndrome, can be distinguished from other functional GI disorders by its strong central component and relative independence from motility disturbances. CAPS is a result of central sensitization with disinhibition of pain signals rather than increased peripheral afferent excitability. A newly described condition, Narcotic Bowel Syndrome (NBS)/Opioid-Induced GI Hyperalgesia, is characterized by the paradoxical development of or increases in abdominal pain associated with continuous or increasing dosages of opioids. Patients only have relief when opioids are withdrawn. We define both conditions in the context of epidemiology, pathophysiology, clinical evaluation and treatment, emphasizing the importance of a physician-patient relationship in all aspects of care.
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| 16. |
- Mattei, Giorgia, et al.
(author)
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Exploring past, present and future trends in public sector auditing research : a literature review
- 2021
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In: Meditari Accountancy Research. - 2049-372X. ; , s. 1-41
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Research review (peer-reviewed)abstract
- Purpose – Public sector auditing research has changed rapidly over the past four decades. This paper aims to reveal how the field has developed and identify avenues for future research. Design/methodology/approach – The authors used a structured literature review following Massaroet al. The sample comprises papers on public sector auditing published in accounting and public sector management journals between 1991 and 2020. Findings – The present analysis highlights that academic research interest in public sector auditing has grown and become more diverse. The authors argue this may reflect a transformation of the public sector in recent decades, owing to the developing institutional logics of public sector reforms, from traditional public administration to new public management and now new public governance. Originality value – This paper offers a comprehensive review of the public sector auditing literature, discussing different perspectives over time. It also outlines the various public sector reforms introduced over the period of the study. In reviewing the existing literature, the authors highlight the themes for future research and policy settings.
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| 17. |
- Mattei, Giorgia, et al.
(author)
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Exploring past, present and future trends in public sector auditing research : a literature review
- 2021
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In: Meditari Accountancy Research. - : Emerald Group Publishing Ltd.. - 2049-372X .- 2049-3738. ; 29:7, s. 94-134
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Research review (peer-reviewed)abstract
- Purpose – Public sector auditing research has changed rapidly over the past four decades. This paper aims to reveal how the field has developed and identify avenues for future research. Design/methodology/approach – The authors used a structured literature review following Massaroet al. The sample comprises papers on public sector auditing published in accounting and public sector management journals between 1991 and 2020. Findings – The present analysis highlights that academic research interest in public sector auditing has grown and become more diverse. The authors argue this may reflect a transformation of the public sector in recent decades, owing to the developing institutional logics of public sector reforms, from traditional public administration to new public management and now new public governance. Originality value – This paper offers a comprehensive review of the public sector auditing literature, discussing different perspectives over time. It also outlines the various public sector reforms introduced over the period of the study. In reviewing the existing literature, the authors highlight the themes for future research and policy settings.
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- Neishabouri, A, et al.
(author)
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Quantification of acceleration as activity counts in ActiGraph wearable
- 2022
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In: Scientific reports. - : Springer Science and Business Media LLC. - 2045-2322. ; 12:1, s. 11958-
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Journal article (peer-reviewed)abstract
- Digital clinical measures based on data collected by wearable devices have seen rapid growth in both clinical trials and healthcare. The widely-used measures based on wearables are epoch-based physical activity counts using accelerometer data. Even though activity counts have been the backbone of thousands of clinical and epidemiological studies, there are large variations of the algorithms that compute counts and their associated parameters—many of which have often been kept proprietary by device providers. This lack of transparency has hindered comparability between studies using different devices and limited their broader clinical applicability. ActiGraph devices have been the most-used wearable accelerometer devices for over two decades. Recognizing the importance of data transparency, interpretability and interoperability to both research and clinical use, we here describe the detailed counts algorithms of five generations of ActiGraph devices going back to the first AM7164 model, and publish the current counts algorithm in ActiGraph’s ActiLife and CentrePoint software as a standalone Python package for research use. We believe that this material will provide a useful resource for the research community, accelerate digital health science and facilitate clinical applications of wearable accelerometry.
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| 23. |
- Seetharaman, Seshadri, et al.
(author)
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Preface
- 2013
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In: Treatise on Process Metallurgy. - : Elsevier. - 9780080969862 ; , s. xvii-xx
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Book chapter (other academic/artistic)
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| 24. |
- Seetharaman, Seshadri, et al.
(author)
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Preface
- 2013. - 2
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In: Treatise on Process Metallurgy. - : Elsevier BV. ; , s. xvii-xx
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Book chapter (peer-reviewed)
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| 25. |
- Seetharaman, Seshadri, et al.
(author)
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Treatise on Process Metallurgy
- 2013
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Book (other academic/artistic)abstract
- Process metallurgy provides academics with the fundamentals of the manufacturing of metallic materials, from raw materials into finished parts or products. Coverage is divided into three volumes, entitled Process Fundamentals, encompassing process fundamentals, extractive and refining processes, and metallurgical process phenomena; Processing Phenomena, encompassing ferrous processing; non-ferrous processing; and refractory, reactive and aqueous processing of metals; and Industrial Processes, encompassing process modeling and computational tools, energy optimization, environmental aspects and industrial design. The work distils 400+ years combined academic experience from the principal editor and multidisciplinary 14-member editorial advisory board, providing the 2,608-page work with a seal of quality. The volumes will function as the process counterpart to Robert Cahn and Peter Haasenâ??s famous reference family, Physical Metallurgy (1996)--which excluded process metallurgy from consideration and which is currently undergoing a major revision under the editorship of David Laughlin and Kazuhiro Hono (publishing 2014). Nevertheless, process and extractive metallurgy are fields within their own right, and this work will be of interest to libraries supporting courses in the process area.
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| 26. |
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Treatise on Process Metallurgy
- 2013
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Editorial collection (peer-reviewed)abstract
- Process metallurgy provides academics with the fundamentals of the manufacturing of metallic materials, from raw materials into finished parts or products. Coverage is divided into three volumes, entitled Process Fundamentals, encompassing process fundamentals, extractive and refining processes, and metallurgical process phenomena; Processing Phenomena, encompassing ferrous processing; non-ferrous processing; and refractory, reactive and aqueous processing of metals; and Industrial Processes, encompassing process modeling and computational tools, energy optimization, environmental aspects and industrial design.
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| 27. |
- Zalesny, Ronald S., et al.
(author)
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Positive water linkages of producing short rotation poplars and willows for bioenergy and phytotechnologies
- 2019
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In: Wiley Interdisciplinary Reviews: Energy and Environment. - : Wiley. - 2041-8396 .- 2041-840X. ; 8:5
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Research review (peer-reviewed)abstract
- The production of short rotation woody crops (SRWCs) such as poplars and willows is a promising component of global bioenergy and phytotechnology portfolios. In addition to the provision of biomass feedstocks and pollution remediation, these trees and shrubs have been sustainably grown to conserve or utilize water in a variety of applications. Growing these woody plants for multiple uses supports many of the United Nation's Sustainable Development Goals (SDGs), especially Clean Water and Sanitation (SDG6) and Affordable and Clean Energy (SDG7). As a result, focusing on ecosystem services such as freshwater and biomass has become an important aspect of deploying these production systems across variable landscapes. The current review consists of an introduction of ecosystem services and the SDGs, as well as SRWCs and their applications. The middle section of the review contains case studies highlighting the positive water linkages of producing short rotation poplars and willows for bioenergy and phytotechnologies. The review concludes with a section that combines the common themes that are consistent among the case studies to address options for integrating new bioenergy feedstock production systems into rural and urban landscapes to promote environmental, social and economic sustainability. This article is categorized under: Bioenergy > Economics and Policy Bioenergy > Climate and Environment.
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