| 1. |
- Coll, M., et al.
(author)
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Towards Oxide Electronics: a Roadmap
- 2019
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In: Applied Surface Science. - : Elsevier BV. - 0169-4332 .- 1873-5584. ; 482, s. 1-93
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Journal article (peer-reviewed)abstract
- At the end of a rush lasting over half a century, in which CMOS technology has been experiencing a constant and breathtaking increase of device speed and density, Moore’s law is approaching the insurmountable barrier given by the ultimate atomic nature of matter. A major challenge for 21st century scientists is finding novel strategies, concepts and materials for replacing silicon-based CMOS semiconductor technologies and guaranteeing a continued and steady technological progress in next decades. Among the materials classes candidate to contribute to this momentous challenge, oxide films and heterostructures are a particularly appealing hunting ground. The vastity, intended in pure chemical terms, of this class of compounds, the complexity of their correlated behaviour, and the wealth of functional properties they display, has already made these systems the subject of choice, worldwide, of a strongly networked, dynamic and interdisciplinary research community. Oxide science and technology has been the target of a wide four-year project, named Towards Oxide-Based Electronics (TO-BE), that has been recently running in Europe and has involved as participants several hundred scientists from 29 EU countries. In this review and perspective paper, published as a final deliverable of the TO-BE Action, the opportunities of oxides as future electronic materials for Information and Communication Technologies ICT and Energy are discussed. The paper is organized as a set of contributions, all selected and ordered as individual building blocks of a wider general scheme. After a brief preface by the editors and an introductory contribution, two sections follow. The first is mainly devoted to providing a perspective on the latest theoretical and experimental methods that are employed to investigate oxides and to produce oxide-based films, heterostructures and devices. In the second, all contributions are dedicated to different specific fields of applications of oxide thin films and heterostructures, in sectors as data storage and computing, optics and plasmonics, magnonics, energy conversion and harvesting, and power electronics.
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| 2. |
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| 3. |
- Gonzalez-Borrero, P. P., et al.
(author)
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Optical band-gap determination of nanostructured WO3 film
- 2010
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In: Applied Physics Letters. - : AIP Publishing. - 0003-6951 .- 1077-3118. ; 96:6
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Journal article (peer-reviewed)abstract
- The optical band-gap energy of a nanostructured tungsten trioxide film is determined using the photoacoustic spectroscopy method under continuous light excitation. The mechanism of the photoacoustic signal generation is discussed. The band-gap energy is also computed by other methods. The absorption coefficient as well as the band-gap energy of three different crystal structures of tungsten trioxide is calculated by a first-principles Green's function approach using the projector augmented wave method. The theoretical study indicates that the cubic crystal structure shows good agreement with the experimental data.
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| 4. |
- Krackhardt, F., et al.
(author)
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Results from the "Me & My Heart" (eMocial) Study: a Randomized Evaluation of a New Smartphone-Based Support Tool to Increase Therapy Adherence of Patients with Acute Coronary Syndrome
- 2023
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In: Cardiovascular Drugs and Therapy. - : Springer Science and Business Media LLC. - 0920-3206 .- 1573-7241. ; 37:4, s. 729-741
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Journal article (peer-reviewed)abstract
- Purpose This study evaluated whether patient support, administered via an electronic device-based app, increased adherence to treatment and lifestyle changes in patients with acute coronary syndrome (ACS) treated with ticagrelor in routine clinical practice. Methods Patients (aged >= 18 years) with diagnosed ACS treated with ticagrelor co-administered with low-dose acetylsalicylic acid were randomized into an active group (with support tool app for medication intake reminders and motivational messages) and a control group (without support tool app), and observed for 48 weeks (ClinicalTrials.gov Identifier: NCT02615704). Patients were asked to complete the 36-item Short-Form Health Survey (SF-36) and Lifestyle Changes Questionnaire (LSQ), and were assessed for blood pressure and body mass index (BMI) at baseline (visit 1) and at the end of the study (visit 2). Medication adherence was measured using the Brilique Adherence Questionnaire (BAQ). Results Patients (N = 676) were randomized to an active (n = 342) or a control (n = 334) group. BAQ data were available for 174 patients in the active group and 174 patients in the control group. Over the 48-week period, mean (standard deviation) adherence for the active and control groups was 96.4% (13.2%) and 91.5% (23.1%), respectively (effect of app intervention, p < 0.05). There were no significant differences in blood pressure and BMI between visits. General improvements in SF-36 and LSQ scores were observed for both groups. Conclusion The patient support tool app was associated with significant improvements in patient-reported treatment adherence compared with a data collection app alone in patients prescribed ticagrelor for ACS.
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| 5. |
- Pederson, Robert, et al.
(author)
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Microstructure and mechanical properties of friction- and electron-beam welded Ti-6Al-4V and Ti-6Al-2Sn-4Zr-6Mo
- 2012
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In: Materials Science & Engineering. - : Elsevier. - 0921-5093 .- 1873-4936. ; 552, s. 555-565
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Journal article (peer-reviewed)abstract
- This work presents mechanical data and microstructural characterization of friction welded (FRW) and electron beam welded (EBW) post weld heat treated (PWHT) specimens of Ti-6Al-2Sn-4Zr-6Mo and Ti-6Al-4V. PWHT Ti6246/Ti6246 welds and Ti64/Ti6246 welds were evaluated with tensile-, creep-. Charpy-V, and microhardness tests. The PWHT treatments were 593 degrees C/2 h, 640 degrees C/2 h and 704 degrees C/2 h, respectively. The microstructure of the different weld types and alloy combinations where examined and characterized using optical microscope and SEM. Tensile strength and yield strength were within specification for both material combinations. The elongation for Ti6246 welded to Ti6246 is below specification. Only small variations in tensile properties were found for the different PWHTs. Fracture occurred in base material of the Ti64 alloy for the combination of Ti64 welded to Ti6246. Charpy-V tests shows that the welds are more brittle compared with the base material. The largest difference was found in Ti6246 welded to Ti6246. No significant variation in creep properties for the different PWHTs has been found. Ti64 welded to Ti6246 shows poor creep properties due to the high testing temperature for the Ti64 alloy. Ti6246 welded to Ti6246 shows good creep properties compared to the base material. The general trend for the weld microhardness was a decreasing hardness with increasing PWHT temperature. One exception though was the FRW Ti64/Ti6246 combination, were the hardness of the Ti6246 side of the HAZ, close to the interface between the two alloys, was highest after a PWHT temperature of 593 degrees C, then decreasing in hardness for 640 degrees C, not PWHT and being least hard for the PWHT temperature of 704 degrees C. The hardness of the Ti64 base material showed no decrease after the PWHTs, but the hardness of the Ti6246 bulk material decreased after PWHT at 704 degrees C. (c) 2012 Elsevier B.V. All rights reserved.
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| 6. |
- Sundh, Henrik, 1976, et al.
(author)
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Reduced water quality associated with higher stocking density disturbs the intestinal barrier functions of Atlantic salmon (Salmo salar L.)
- 2019
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In: Aquaculture. - : Elsevier BV. - 0044-8486. ; 512
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Journal article (peer-reviewed)abstract
- The stocking density of fish in aquaculture is of major importance as it may have profound effects on water quality resulting in impact on fish health and possibly affect the external barriers that protect against pathogens There are many husbandry conditions, including stocking density, that may affect the primary protective barriers, i.e. the skin, intestine and gills, against invading pathogens and other harmful substances. It is well known that increased fish density will lead to decreased dissolved oxygen (DO) levels and affect other water quality parameters such as carbon dioxide, pH and ammonia. It is not known if such changes in the rearing environment affect the intestinal primary barriers of Atlantic salmon. Groups of Atlantic salmon post-smolts were kept for 57 days in tanks supplied with seawater at a constant flow at stocking densities of 10, 30, 50 and 70 kg m−3; reduced water quality was associated with higher stocking density. Repeated sampling for plasma cortisol and water cortisol release rate indicate that the highest stocking density elicited a primary stress response in the fish, which decreased with time. The physical intestinal barrier was assessed using paracellular permeability measurements, i.e. transepithelial electrical resistance (TER) and diffusion rate of 14C-mannitol, in combination with the translocation rate of heat-inactivated Aeromonas salmonicida. The physical intestinal barrier decreased with increasing density, both when measured as decreased transepithelial electrical resistance and as elevated paracellular permeability for 14C-mannitol. As this was observed at a time point when no differences could be seen in plasma cortisol or cortisol release rate, it suggests that intestinal paracellular permeability can be a useful marker for chronic stress in salmon. The status of the intestinal immune system was assessed as degree of neutrophil infiltration as well as the mRNA expression of the pro-inflammatory cytokines, interferon γ (IFNγ), interleukin (IL) 1β and tumor necrosis factor (TNF) α, anti-inflammatory cytokines, IL-10 and transforming growth factor β (TGFβ) and other immune related-genes, IL-8 and the inhibitor of the transcription factor nuclear factor κB (IκB). The intestinal immune system was affected at the highest stocking density as observed by a decreased expression of IFNγ in parallel with higher infiltration of neutrophils. In conclusion, high stocking density associated with reduced water quality is chronically stressful to the fish as it elicits a primary stress response as well as a weakened physical and disturbed immunological primary barrier.
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| 7. |
- Andler, Sten F., et al.
(author)
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Information Fusion from Databases, Sensors and Simulations : A Collaborative Research Program
- 2005
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In: Proceedings. - : IEEE Computer Society. - 0769523064 ; , s. 234-241
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Conference paper (peer-reviewed)abstract
- This paper provides an overview of a collaborative research program in information fusion from databases, sensors and simulations. Information fusion entails the combination of data from multiple sources, to generate information that cannot be derived from the individual sources. This area is of strategic importance for industry and defense, as well as public administration areas such as health care, and needs to be pursued as an academic subject. A large number of industrial partners are supporting and participating in the development of the area. The paper describes the program’s general approach and main research areas, with a particular focus on the role of information fusion in systems development
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| 8. |
- Arvidsson, D, et al.
(author)
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Splanchnic oxygen consumption in septic and hemorrhagic shock.
- 1991
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In: Surgery. - 0039-6060 .- 1532-7361. ; 109:2, s. 190-7
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Journal article (peer-reviewed)abstract
- Oxygen consumption (VO2) is dependent on oxygen delivery (DO2) in septic shock. Local hypoxia with later secondary organ failure may develop, however, despite an often hyperdynamic circulation. The splanchnic organs seem to be of vital importance in this context. In experiments performed in pigs we compared total body VO2 and DO2 with oxygen consumption and delivery in the gastrointestinal organs and the liver in two different shock states: (1) septic shock induced by peritonitis (n = 6) and (2) hemorrhagic shock (n = 6). Another group of six animals not in shock served as controls. Total, gastrointestinal, and liver DO2 decreased in a similar pattern in both septic and hemorrhagic shock. Gastrointestinal and liver VO2 increased in sepsis, whereas it was unchanged in hemorrhage. In the later phase of sepsis, liver VO2, but not gastrointestinal VO2, again decreased, because liver oxygen extraction was almost total and liver DO2 decreased further. The development of flow-dependent liver hypoxia was reflected in a decrease in liver lactate turnover (increased liver lactate release) during late sepsis. Early hypoxia in the splanchnic region is suggested as a plausible mechanism behind the development of secondary organ failure, especially in sepsis.
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| 9. |
- Azadian, S., et al.
(author)
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Precipitation in spray-formed IN 718
- 2001
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In: Superalloys 718, 625, 706 and various derivatives. - Warrendale, Pa : Minerals, Metals & Materials Society. ; , s. 617-626
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Conference paper (peer-reviewed)abstract
- The precipitation of the γ', γ'' and δ phases in a spray-formed version of IN 718 has been studied by hardness measurement and metallographic examination of samples subjected to solution treatment at 1025°C followed by isothermal treatments between 620 and 1010°C up to 100 h. The precipitation processes were compared to those in a wrought (ring-rolled) version of the alloy subjected to the same heat treatments. Time-temperature-hardness diagrams for the two alloys were constructed. Small differences were observed between the two materials but these can at least partly be attributed to differences in composition. For the spray-cast material the δ-phase solvus temperature was determined and the growth kinetics of the γ'' phase established
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| 10. |
- Azadian, Saied, et al.
(author)
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Precipitation in spray-formed IN718
- 2001
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In: Proceedings of Fifth International Special Emphasis Symposium on Sureralloys. - : The Minerals, Metals, and Materials Society. ; , s. 617-626
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Conference paper (peer-reviewed)
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