| 1. |
- Montelius, M., et al.
(författare)
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Chemical evolution of ytterbium in the Galactic disk
- 2022
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Ingår i: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 665
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Tidskriftsartikel (refereegranskat)abstract
- Context. Measuring the abundances of neutron-capture elements in Galactic disk stars is an important part of understanding key stellar and galactic processes. In the optical wavelength regime a number of different neutron-capture elements have been measured; however, only the s-process-dominated element cerium has been accurately measured for a large sample of disk stars from the infrared H band. The more r-process dominated element ytterbium has only been measured in a small subset of stars so far. Aims. In this study we aim to measure the ytterbium (Yb) abundance of local disk giants using the Yb II line at lambda(air) = 16 498 angstrom. We also compare the resulting abundance trend with cerium and europium abundances for the same stars to analyse the s- and r-process contributions. Methods. We analyse 30 K giants with high-resolution H band spectra using spectral synthesis. The very same stars have already been analysed using high-resolution optical spectra via the same method, but it was not possible to determine the abundance of Yb from those spectra due to blending issues for stars with [Fe/H] > -1. In the present analysis, we utilise the stellar parameters determined from the optical analysis. Results. We determined the Yb abundances with an estimated uncertainty for [Yb/Fe] of 0.1 dex. By comparison, we found that the [Yb/Fe] trend closely follows the [Eu/Fe] trend and has clear s-process enrichment in identified s-rich stars. This comparison confirms both that the validity of the Yb abundances is ensured and that the theoretical prediction that the s-/r-process contribution to the origin of Yb of roughly 40/60 is supported. Conclusions. These results show that, with a careful and detailed analysis of infrared spectra, reliable Yb abundances can be derived for a wider sample of cooler giants in the range -1.1 < [Fe/H] < 0.3. This is promising for further studies of the production of Yb and for the r-process channel, key for galactochemical evolution, in the infrared.
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| 2. |
- De Paoli, Sergio, et al.
(författare)
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A Prospective Clinical Assessment of BioHorizons Tissue-Level Implants
- 2023
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Ingår i: The international journal of periodontics & restorative dentistry. - : Quintessence. - 0198-7569 .- 1945-3388. ; 43:1, s. 105-111
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- This investigation was designed to evaluate crestal bone stability and soft tissue maintenance to Laser-Lok tapered tissue-level implants. Twelve patients presenting with an edentulous site adequate for the placement of two implants were recruited from four dental offices (2 to 4 patients per office). Each patient received two Laser-Lok tissue-level implants placed with a 3-mm interimplant distance according to a surgical stent. The implants were placed so that the Laser-Lok zone sat at the junction between hard and soft tissues. A total of 24 implants were placed, and all achieved satisfactory crestal bone stability and soft tissue maintenance 1 year after receiving the final prosthetic restoration.
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| 3. |
- Grotle, Margreth, et al.
(författare)
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What's in the black box of arthritis rehabilitation? : A comparison of rehabilitation practice for patients with inflammatory arthritis in northern europe
- 2013
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Ingår i: Journal of Rehabilitation Medicine. - Uppsala : Foundation Rehabilitation Information. - 1650-1977 .- 1651-2081. ; 45:5, s. 458-466
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Tidskriftsartikel (refereegranskat)abstract
- Background: In evaluating complex interventions, it is a challenge for researchers to provide transparent reporting of the intervention content with sufficient detail and clarity such that effects can be compared across studies or countries. Objective: To describe and compare the content of current rehabilitation for patients with inflammatory arthritis across 4 northern European countries. Patients and methods: A total of 731 patients with inflammatory rheumatic diseases participated in a multicentre, longitudinal observational study carried out in Sweden, The Netherlands, Denmark and Norway. Data on context, structure and process were reported by patients and teams at the different participating study sites according to the Scandinavian Team Arthritis Register European Team Intiative for Care Research (STAR-ETIC) framework. Results: Although large similarities were found in the context, there were important differences between the Netherlands and the Scandinavian countries. Regarding structure, there were considerable differences in the length of the rehabilitation period across settings and countries. The most evident differences concerned process variables, especially the type and dosage of individual treatment modalities. Conclusion: The variation in important aspects of arthritis rehabilitation found in the present study underline the need for transparent and standardized description of these variables when comparing effects across settings and countries. A standardized description of current practice can be achieved by the STAR-ETIC framework.
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| 4. |
- Holmberg, Kenneth, et al.
(författare)
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Residual stresses in TiN, DLC and MoS2 coated surfaces with regard to their tribological fracture behaviour
- 2009
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Ingår i: Wear. - : Elsevier BV. - 0043-1648 .- 1873-2577. ; 267:12, s. 2142-2156
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Tidskriftsartikel (refereegranskat)abstract
- Thin hard coatings on components and tools are used increasingly due to the rapid development in deposition techniques, tribological performance and application skills. The residual stresses in a coated surface are crucial for its tribological performance. Compressive residual stresses in PVD deposited TiN and DLC coatings were measured to be in the range of 0.03-4 GPa on steel substrate and 0.1-1.3 GPa on silicon. MoS2 coatings had tensional stresses in the range of 0.8-1.3 on steel and 0.16 GPa compressive stresses on silicon. The fracture pattern of coatings deposited on steel substrate were analysed both in bend testing and scratch testing. A micro-scale finite element method (FEM) modelling and stress simulation of a 2 m TiN-coated steel surface was carried out and showed a reduction of the generated tensile buckling stresses in front of the sliding tip when compressive residual stresses of 1 GPa were included in the model. However, this reduction is not similarly observed in the scratch groove behind the tip, possibly due to sliding contact-induced stress relaxation. Scratch and bending tests allowed calculation of the fracture toughness of the three coated surfaces, based on both empirical crack pattern observations and FEM stress calculation, which resulted in highest values for TiN coating followed by MoS2 and DLC coatings, being KC = 4-11, about 2, and 1-2 MPa m1/2, respectively. Higher compressive residual stresses in the coating and higher elastic modulus of the coating correlated to increased fracture toughness of the coated surface.
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| 5. |
- Kebande, Victor R., et al.
(författare)
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Mapping digital forensic application requirement specification to an international standard
- 2020
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Ingår i: Forensic Science International: Reports. - : Elsevier. - 2665-9107. ; 2
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Tidskriftsartikel (refereegranskat)abstract
- A potential security incident may go unsolved if standardized forensic approaches are not applied during lawfulinvestigations. This paper highlights the importance of mapping the digital forensic application requirementspecification to an international standard, precisely ISO/IEC 27043. The outcome of this work is projected tocontribute to the problem of secure DF tool creation, and in the process address Software Requirements Specification(SRS) as a process of digital evidence admissibility.
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| 6. |
- Martin, R, et al.
(författare)
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High-Resolution X-ray Photoelectron Spectroscopy of an IrO2(110) Film on Ir(100)
- 2020
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Ingår i: The Journal of Physical Chemistry Letters. - : American Chemical Society (ACS). - 1948-7185. ; 11:17, s. 7184-7189
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Tidskriftsartikel (refereegranskat)abstract
- High-resolution X-ray photoelectron spectroscopy (XPS) and density functional theory (DFT) were used to characterize IrO2(110) films on Ir(100) with stoichiometric as well as OH-rich terminations. Core-level Ir 4f and O 1s peaks were identified for the undercoordinated Ir and O atoms and bridging and on-top OH groups at the IrO2(110) surfaces. Peak assignments were validated by comparison of the core-level shifts determined experimentally with those computed using DFT, quantitative analysis of the concentrations of surface species, and the measured variation of the Ir 4f peak intensities with photoelectron kinetic energy. We show that exposure of the IrO2(110) surface to O2 near room temperature produces a large quantity of on-top OH groups because of reaction of background H2 with the surface. The peak assignments made in this study can serve as a foundation for future experiments designed to utilize XPS to uncover atomic-level details of the surface chemistry of IrO2(110).
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| 7. |
- Winning, Tracey, et al.
(författare)
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Evidence-based care and the curriculum
- 2008
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Ingår i: European journal of dental education. - : Wiley. - 1396-5883 .- 1600-0579. ; 12:Suppl 1, s. 48-63
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Forskningsöversikt (övrigt vetenskapligt/konstnärligt)abstract
- An evidence-based (EB) approach has been a significant driver in reforming healthcare over the past two decades. This change has extended across a broad range of health professions, including oral healthcare. A key element in achieving an EB approach to oral healthcare is educating our practitioners, both current and future. This involves providing opportunities integrated within simulated and actual clinical settings for practitioners to learn and apply the principles and processes of evidence-based oral healthcare (EBOHC). Therefore, the focus of this discussion will be on ways in which EBOHC and associated research activities can be implemented into curricula, with the aim of improving patient care. This paper will initially define the scope of EBOHC and research, what these involve, why they are important, and issues that we need to manage when implementing EBOHC. This will be followed by a discussion of factors that enable successful implementation of EBOHC and research into curricula. The paper concludes with suggestions on the future of EBOHC and research in curricula. Key recommendations related to curricula include strengthening of the culture of a scientific approach to education and oral healthcare provision; complete integration of EBOHC into the curriculum at all levels; and faculty development to implement EBOHC based on their needs and evidence of effective approaches. Key recommendations to support implementation and maintenance of EBOHC include recognition and funding for high-quality systematic reviews and development of associated methodologies relevant for global environments; building global capacity of EBOHC researchers; research into improving translation of effective interventions into education and healthcare practice, including patient-reported outcomes, safety and harms, understanding and incorporation of patient values into EB decision-making, economic evaluation research specific to oral healthcare and effective methods for changing practitioner (faculty) behaviours; and extend access to synthesized research in 'user friendly' formats and languages tailored to meet users' needs. Realizing these recommendations may help to improve access to effective healthcare as a basic human right.
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