| 1. |
- Hallström, Samuel
(författare)
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Thermodynamic assessment of the Ni-Ru system
- 2004
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Ingår i: Journal of phase equilibria (Print). - : Springer Science and Business Media LLC. - 1054-9714 .- 1544-1032 .- 1547-7037 .- 0000-0000. ; 25:3, s. 252-254
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Tidskriftsartikel (refereegranskat)abstract
- The Ni-Ru system is assessed using the CALPHAD technique. The only available experimental information for this system concerns phase equilibria, whereas no thermochemical information has been found. The THERMO-CALC software is applied to obtain Gibbs energy (G) functions for the individual phases. The phase diagram calculated from the new G functions is in excellent agreement with the experimental diagram, and all the thermodynamic parameters are given in the Appendix. In addition, tentative activity diagrams and the metastable miscibility gaps in fcc and hcp phases are calculated from the new thermodynamic description.
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| 2. |
- Borgenstam, Annika, et al.
(författare)
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DICTRA, a tool for simulation of diffusional transformations in alloys
- 2000
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Ingår i: Journal of phase equilibria (Print). - : Springer Science and Business Media LLC. - 1054-9714 .- 1544-1032 .- 1863-7345. ; 21:3, s. 269-280
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Tidskriftsartikel (refereegranskat)abstract
- In the present paper, a general survey of the diffusion-controlled transformations (DICTRA) software is given. DICTRA is an engineering tool for diffusion simulations in multicomponent alloys. The simulations are based on multicomponent diffusion and thermodynamic data, both obtained by analyzing and assessing experimental information. This allows for many different cases to be studied as soon as the underlying data are available. DICTRA is not a complete simulation tool because only geometries that can be transformed into one space variable can be treated, but many well posed problems of practical interest may be solved. The program contains several different models, which are discussed in the present paper. Each model has its own applications and several examples from recent simulations are given in order to demonstrate the usage of the particular models.
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| 3. |
- Borggren, U., et al.
(författare)
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A thermodynamic database for special brass
- 2003
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Ingår i: Journal of phase equilibria (Print). - : Springer Science and Business Media LLC. - 1054-9714 .- 1544-1032 .- 1863-7345. ; 24:2, s. 110-121
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Tidskriftsartikel (refereegranskat)abstract
- In the present work a thermodynamic database for brass alloys is developed. The database may be used to calculate phase diagrams and property diagrams and to simulate solidification, calculations that may be used to develop new alloys and to increase the understanding of existing ones. When developed, such a database reduces the need for further experimental investigations considerably. The present work is focused on so-called special brass (i.e., alloys of Cu and Zn with small additions of, for instance, Al, As, B, Fe, Pb, and/or Si). The database was created using available thermodynamic descriptions and unavailable systems were assessed using the CALPHAD technique. Experimental information was taken from literature and from experimental results obtained in the present work. The database contains the elements Al, Cu, Pb, Si, and Zn. Calculated phase diagrams show that the peritectic reaction in the Cu-Zn system is very sensitive to small additions of Al and Si, which moves the peritectic reaction towards lower Zn contents and higher temperatures.
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| 4. |
- Bratberg, Johan, et al.
(författare)
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A thermodynamic assessment of the Co-V system
- 2003
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Ingår i: Journal of phase equilibria (Print). - : Springer Science and Business Media LLC. - 1054-9714 .- 1544-1032 .- 1863-7345. ; 24:6, s. 495-503
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Tidskriftsartikel (refereegranskat)abstract
- A thermodynamic evaluation of the binary Co-V system has been done using experimental thermochemical and phase diagram data. A consistent thermodynamic description, using a Redlich-Kister model for solution phases and sublattice models for the intermetallics, was obtained, and it agreed well with the critically evaluated experimental data. The model for the solid phases accounts for the magnetic contribution to the Gibbs energy. The addition of a composition dependent magnetic term also led to the prediction of an fcc-Co miscibility gap. The model parameters have been determined using a computerized optimization technique. Several diagrams and tables concerning phase equilibria are presented.
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| 5. |
- Forsberg, Annika, et al.
(författare)
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Thermodynamic evaluation of the Fe-Mn-Si system and the γ/ε martensitic transformation
- 1993
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Ingår i: Journal of phase equilibria (Print). - 1054-9714 .- 1544-1032. ; 14:3, s. 354-363
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Tidskriftsartikel (refereegranskat)abstract
- The thermodynamic properties of the Fe-Mn-Si system are analyzed by means of thermodynamic models for the individual phases. Special attention is paid to the γ → ε martensitic transition. A complete set of parameters, from which arbitrary sections of the phase diagram as well as the Ms and As temperatures may be calculated, is given.
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| 6. |
- Frisk, K., et al.
(författare)
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Development of a database for cemented carbides : Thermodynamic modeling and experiments
- 2001
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Ingår i: Journal of phase equilibria (Print). - 1054-9714 .- 1544-1032. ; 22:6, s. 645-655
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Tidskriftsartikel (refereegranskat)abstract
- A new database, for thermodynamic information for cemented carbides has been developed. A full description of the alloy system C-Co-N-Nb-Ta-Ti-W is presented. The work has involved both thermodynamic evaluations of lower order systems and experimental investigations. Full new assessments of the quaternary Ti-W-C-N, Ta-W-C-N, and Nb-W-C-N systems have been performed, including tests of the influence of model parameters on miscibility gaps in higher order systems. A new improved description of the Co-W-C system based on new experiments is used in the present work. The main results of the experimental work are measurements of the composition of the cubic carbide in selected equilibria; measurements of the temperatures of the liq + fcc + WC + gr. and liq + fcc + WC + M6C equilibria in the Co-W-C and Co-W-X-C (X = Ti, Ta, Nb) systems; and measurements of the solubility of Ti, Ta, and Nb in liquid in multicomponent alloys. The results of the assessments have been implemented into a new database. The database has successfully been used in a parallel project to simulate the formation of gamma -phase free zones in cemented carbides. A few other applications of industrial relevance are presented.
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| 7. |
- Markström, Andreas, 1975-, et al.
(författare)
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A revised thermodynamic description of the Co-W-C system
- 2005
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Ingår i: Journal of Phase Equilibria and Diffusion. - : Springer Science and Business Media LLC. - 1547-7037 .- 0000-0000. ; 26:2, s. 152-160
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Tidskriftsartikel (refereegranskat)abstract
- A thermodynamic reassessment of the Co-W-C system is presented. New information on the liquid (L)+face-centered cubic (fcc)+graphite+WC and L+fcc+WC+M6C equilibria has recently been published. Because these equilibria are very important for extrapolation to higher-order systems, the ternary system has been revised. A revision of the Co-W system also has been performed.
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| 8. |
- Tang, W. J., et al.
(författare)
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Phase equilibria in the pseudobinary Ti0.5Ni0.5-Ti0.5Cu0.5 system
- 2000
-
Ingår i: Journal of phase equilibria (Print). - : Springer Science and Business Media LLC. - 1054-9714 .- 1544-1032 .- 1863-7345. ; 21:3, s. 227-234
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Tidskriftsartikel (refereegranskat)abstract
- The pseudobinary Ti0.5Ni0.5-Ti0.5Cu0.5 system was analyzed using thermodynamic models for the Gibbs energy of individual phases in the system. The TiNi intermetallic phase crystallizes with the B2 CsCl-type structure and is an ordered form of the A2 BCC structure, It was treated with a two-sublattice model (Cu, Ni, Ti, Va)(0.5)(Cu, Ni, Ti, Va)(0.5), where Va represents a vacancy and one sublattice is occupied predominantly by Ti and the other by Ni and Cu. Other phases such as B11 based on a TiCu compound and low-temperature phases B19' and B19 were also described with two-sublattice models with different distribution of atoms on each sublattice, A thermodynamic description of the Ti0.5Ni0.5-Ti0.5Cu0.5 system was obtained from an optimization based on experimental information. The calculated diagram of the pseudobinary Ti0.5Ni0.5-Ti0.5Cu0.5 system at high temperatures exhibits eutectic solidification of liquid and shows satisfactory agreement with experimental data. The phase relations among the B2, B19', and B19 phases at low temperatures mere also assessed on the basis of experimental information from martensitic transformations.
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| 9. |
- Toffolon, C., et al.
(författare)
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Reassessment of the Nb-Sn system
- 2002
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Ingår i: Journal of phase equilibria (Print). - : Springer Science and Business Media LLC. - 1054-9714 .- 1544-1032 .- 1863-7345. ; 23:2, s. 134-139
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Tidskriftsartikel (refereegranskat)abstract
- A new assessment of the Nb-Sn system is proposed considering the Nb3Sn phase stable down below room temperature. The Gibbs energy of formation of the solution and compound phases in the Nb-Sn system were derived from an optimization procedure using all the available experimental thermodynamic and phase diagram data. In particular, the enthalpy of formation of the Nb3Sn phase at 1350 degreesC was determined experimentally in this study. The thermodynamic description of the intermetallic compounds was made using a sublattice model, while a Redlish-Kister polynomial was used for the solution phases.
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| 10. |
- Tolochko, O., et al.
(författare)
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Thermodynamic properties of supercooled Fe-B liquids - A theoretical and experimental study
- 2000
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Ingår i: Journal of phase equilibria (Print). - : Springer Science and Business Media LLC. - 1054-9714 .- 1544-1032 .- 1863-7345. ; 21:1, s. 19-24
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Tidskriftsartikel (refereegranskat)abstract
- The two-level model, recommended at the Ringberg 95 workshop, is applied to extrapolate the thermodynamic properties of liquid Fe-B alloys to large undercooling and to analyze the crystallization of glassy Fe85B15 alloys obtained by melt spinning. The new method yields practically the same phase diagram as the SGTE database but a superior result when evaluating the heat capacity, entropy, and crystallization heat at large undercooling. These properties are compared in the low-temperature range (700 to 800 K) with the experimental data obtained for an Fe85B15 metallic glass by scanning calorimetry. A good agreement between experiments and calculations is obtained when the observed magnetic transition at 530 K is taken into account.
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| 11. |
- Abe, T., et al.
(författare)
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Thermodynamic assessment of the Cu-Pt system
- 2006
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Ingår i: Journal of Phase Equilibria and Diffusion. - 1547-7037. ; 27:1, s. 5-13
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Tidskriftsartikel (refereegranskat)abstract
- A CALPHAD assessment of the Cu-Pt system has been carried out. Two and four sublattice models were applied to describe the Gibbs free energies of ordered phases where the contribution of SRO is taken explicitly into account through the reciprocal parameters. The disordered fcc A1 and liquid phases were treated as substitutional solutions. A consistent set of parameters for the phases in the Cu-Pt system as obtained, and those parameters can satisfactorily reproduce the experimental phase equilibria and thermodynamic properties, such as enthalpies, activity of Cu, and long-range order parameters.
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| 12. |
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| 13. |
- Ahlgren, Christina, et al.
(författare)
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Effects on physical performance and pain from three dynamic training programs for women with work-related trapezius myalgia
- 2001
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Ingår i: Journal of Rehabilitation Medicine. - : Taylor & Francis. - 1650-1977 .- 1651-2081 .- 0000-0000. ; 33:4, s. 162-9
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Tidskriftsartikel (refereegranskat)abstract
- To compare training programs for women with trapezius myalgia regarding physical performance and pain, 102 women were randomized to strength, endurance, co-ordination and non-training groups. Before and after the intervention, static strength and dynamic muscular endurance in shoulder muscles were measured on a Cybex II dynamometer. Muscle activity in shoulder muscles was monitored via surface EMG. The signal amplitude ratio between the active and passive phase of repeated contractions indicated the ability to relax. Pain at present, pain in general and pain at worst were measured on visual analogue scales. After training, within group comparisons showed that the training groups rated less pain, and in the strength training group ratings of pain at worst differed from the non-training group. Using the non-training group as a reference, static strength increased in the strength and endurance training groups and muscular endurance in all training groups. The study indicates that regular exercises with strength, endurance or co-ordination training of neck/shoulder muscles might alleviate pain for women with work-related trapezius myalgia.
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| 14. |
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| 15. |
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| 16. |
- Arve, K, et al.
(författare)
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Analysis of the state and size of silver on alumina in effective removal of NOx from oxygen rich exhaust gas
- 2006
-
Ingår i: Journal of Nanoscience and Nanotechnology. - : American Scientific Publishers. - 1533-4880 .- 0000-0000. ; 6:4, s. 1076-1083
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Tidskriftsartikel (refereegranskat)abstract
- Ag/alumina catalysts with different silver contents for octane-SCR were prepared by impregnation and incipient wetness methods. Activity tests revealed that the decisive factor for high activity is not only a high dispersion of silver, but also the ability of the system to redisperse clustered silver. Determination of dispersion by TEM/HAADF and O-2-chemisorption experiments resulted in values close to each other even if the results were not directly comparable. This is suggested to be due to not complete silver reduction below 700 degrees C and the samples being very heterogeneous in terms of particle size, e.g., having a bimodal size distribution. Small charged Ag-n(delta+) clusters containing 2-8 silver atoms highly prevailed in the samples containing < 2 wt% Ag and exhibiting high octane-SCR activity In highly loaded Ag/alumina samples or those reduced and reoxidized at high temperature (> 400 degrees C), large metallic particles are stabilized, resulting in poor conversion of NOx to N-2.
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| 17. |
- Arvhult, Carl-Magnus, et al.
(författare)
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Experimental Phase Diagram Study of the Fe-Ni-Te System
- 2019
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Ingår i: JOURNAL OF PHASE EQUILIBRIA AND DIFFUSION. - : Springer Nature. - 1547-7037 .- 1863-7345. ; 40:4, s. 610-622
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Tidskriftsartikel (refereegranskat)abstract
- Fe-Ni-Te alloys have been experimentally studied using isothermal heat treatments with SEM-EDS and WDS, XRD, and DTA in order to add phase diagram data for a thermodynamic assessment. This is for the application of fission product-induced corrosion of the stainless steel cladding of nuclear fuel pins, where Te is a key element. Phase diagram data are presented at phase. SEM images show unidentified precipitates in several samples.
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| 18. |
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| 19. |
- Balmes, Olivier, et al.
(författare)
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Self-healing and self-organized gold nanoparticle films at a water/organic solvent interface
- 2006
-
Ingår i: Journal of Nanoscience and Nanotechnology. - : American Scientific Publishers. - 1533-4880 .- 0000-0000. ; 6:1, s. 130-134
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Tidskriftsartikel (refereegranskat)abstract
- Gold nanoparticles (5 nm and 20 nm) have been synthesized and stabilized with mercaptoundecanol. These particles, although insoluble in water or common organic solvents, spread as a thin film at the liquid-liquid interface between a water phase and an organic phase. Films of these gold nanoparticles have been observed both by conventional transmission electron microscopy of deposited samples and by cryo-transmission electron microscopy of plunge-frozen samples. The film can be monolayered and extend over centimeter-sized areas. The particle films spontaneously re-assemble and self-organize at the interface when disrupted. This self-healing capacity of the film should make it possible to build a device for continuous production and deposition of the film.
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| 20. |
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| 21. |
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| 22. |
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| 23. |
- Berg, Marie, 1955
(författare)
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A Midwifery Model of Care for Childbearing women at High Risk: Genuine Caring in Caring for the Genuine
- 2005
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Ingår i: Journal of Perinatal Education. - : Lamaze International. - 1058-1243 .- 0000-0000. ; 14:1, s. 9-21
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Tidskriftsartikel (refereegranskat)abstract
- According to this paper's synthesis of research, three constituents of ideal midwifery care emerge. First, a dignity-protective action takes place in a midwife's caring relationship with a childbearing woman at high risk and includes mutuality, trust, ongoing dialogue, enduring presence, and shared responsibility. Secondly, the midwife's embodied knowledge is based on genuineness to oneself and consists of theoretical, practical, intuitive, and reflective knowledge. Finally, nurse-midwives have a special responsibility to balance the natural and medical perspectives in the care of childbearing women at high risk, especially by promoting the woman's inborn capacity to be a mother and to give birth in a natural manner. This midwifery model of care is labeled "Genuine Caring in Caring for the Genuine." Here, the word genuine expresses the nature of midwifery care, as well as the nature of each pregnant woman being cared for as a unique individual.
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| 24. |
- Bigdeli, Sedigheh, et al.
(författare)
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A New Description of Pure C in Developing the Third Generation of Calphad Databases
- 2018
-
Ingår i: Journal of Phase Equilibria and Diffusion. - : Springer Nature. - 1547-7037 .- 1863-7345. ; 39:6, s. 832-840
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- In connection to developing the third generation of Calphad databases a new thermodynamic description is presented for unary carbon. Models used in this work have more physical basis and are valid down to 0 K. The anisotropy in graphite, caused by weak Van der Waals inter-plane forces makes it difficult to fit the heat capacity data by a single Einstein tempera-ture for modelling the harmonic vibration of the atoms. By using multiple Einstein temperatures this problem is solved and a good agreement with the experimental data at low temperatures is achieved. Diamond is mod-eled using new models too, and the two-state model is used for modelling the liquid phase.
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| 25. |
- Bigdeli, Sedigheh, 1984, et al.
(författare)
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Strategies for High-Temperature Corrosion Simulations of Fe-Based Alloys Using the Calphad Approach : Part I
- 2021
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Ingår i: Journal of Phase Equilibria and Diffusion. - : Springer Nature. - 1547-7037 .- 1863-7345. ; 42:3, s. 403-418
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Tidskriftsartikel (refereegranskat)abstract
- The environmental degradation of materials at high temperatures limits the useful life of different industrial components and hinders the development of more economical and environmentally friendly processes for the energy production. Despite the importance of this phenomena, a model to predict lifetime of materials that degrade due to high-temperature corrosion has up till now been lacking due to limitations of the computational possibilities and the complex nature of oxidation. In the present work we develop some strategies to model high-temperature corrosion in Fe-based alloys using the Calphad (Calculation of Phase Diagrams) approach. It is proposed that kinetic-based simulations for oxidation of Al and Cr can accurately represent the lifetime of the protective layers in FeCrAl and FeCr alloys at different temperatures in air. The oxide systems are in addition investigated by equilibrium calculations. The corrosion mechanisms of FeCr and FeCrAl alloys are discussed based on theoretical and experimental knowledge.
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| 26. |
- Blom, Hans, et al.
(författare)
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Parallel confocal detection of single biomolecules using diffractive optics and integrated detector units
- 2004
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Ingår i: Current Pharmaceutical Biotechnology. - : Bentham Science Publishers Ltd.. - 1389-2010 .- 1873-4316 .- 0000-0000. ; 5:2, s. 231-241
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Forskningsöversikt (refereegranskat)abstract
- The past few years we have witnessed a tremendous surge of interest in so-called array-based miniaturised analytical systems due to their value as extremely powerful tools for high-throughput sequence analysis, drug discovery and development, and diagnostic tests in medicine (see articles in Issue 1). Terminologies that have been used to describe these array-based bioscience systems include (but are not limited to): DNA-chip, microarrays, microchip, biochip, DNA-microarrays and genome chip. Potential technological benefits of introducing these miniaturised analytical systems include improved accuracy, multiplexing, lower sample and reagent consumption, disposability, and decreased analysis times, just to mention a few examples. Among the many alternative principles of detection-analysis (e.g. chemiluminescence, electroluminescence and conductivity), fluo re scence-based techniques are widely used, examples being fluorescence resonance energy transfer, fluorescence quenching, fluorescence polarisation, time-resolved fluorescence, and fluorescence fluctuation spectroscopy (see articles in Issue II). Time-dependent fluctuations of fluorescent biomolecules with different molecular properties, like molecular weight, translational and rotational diffusion time, colour and lifetime, potentially provide all the kinetic and thermodynamic information required in analysing complex interactions. In this mini-review article, we present recent extensions aimed to implement parallel laser excitation and parallel fluorescence detection that can lead to even further increase in throughput in miniaturised array-based analytical systems. We also report on developments and characterisations of multiplexing extension that allow multifocal laser excitation together with matched parallel fluorescence detection for parallel confocal dynamical fluorescence fluctuation studies at the single biomolecule level.
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| 27. |
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| 28. |
- Bolton, Kim, 1964, et al.
(författare)
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Atomistic simulations of catalyzed carbon nanotube growth
- 2006
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Ingår i: JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY. - : American Scientific Publishers. - 1533-4880 .- 0000-0000. ; 6:5, s. 1211-1224
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Tidskriftsartikel (refereegranskat)abstract
- We review the advances made in understanding the mechanism of catalyzed carbon nanotube growth, with the main focus on direct dynamics and molecular dynamics studies of single-walled carbon nanotube (SWNT) growth. These studies have deepened our understanding of the catalytic SWNT nucleation and growth mechanisms, but more accurate and efficient methods are required for a complete investigation at experimental growth conditions.
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| 29. |
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| 30. |
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| 31. |
- Chen, Jing, 1995, et al.
(författare)
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JOSS: Joint Exploration of CPU-Memory DVFS and Task Scheduling for Energy Efficiency
- 2023
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Ingår i: 52nd International Conference on Parallel Processing (ICPP 2023). - 0000-0000. - 9798400708435 ; , s. 828-838
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Konferensbidrag (refereegranskat)abstract
- Energy-efficient execution of task-based parallel applications is crucial as tasking is a widely supported feature in many parallel programming libraries and runtimes. Currently, state-of-the-art proposals primarily rely on leveraging core asymmetry and CPU DVFS. Additionally, these proposals mostly use heuristics and lack the ability to explore the trade-offs between energy usage and performance. However, our findings demonstrate that focusing solely on CPU energy consumption for energy-efficient scheduling while neglecting memory energy consumption leaves room for further energy savings. We propose JOSS, a runtime scheduling framework that leverages both CPU DVFS and memory DVFS in conjunction with core asymmetry and task characteristics to enable energy-efficient execution of task-based applications. JOSS also enables the exploration of energy and performance trade-offs by supporting user-defined performance constraints. JOSS uses a set of models to predict task execution time, CPU and memory power consumption, and then selects the configuration for the tunable knobs to achieve the desired energy performance trade-off. Our evaluation shows that JOSS achieves 21.2% energy reduction, on average, compared to the state-of-the-art. Moreover, we demonstrate that even in the absence of a memory DVFS knob, taking energy consumption of both CPU and memory into account achieves better energy savings compared to only accounting for CPU energy. Furthermore, JOSS is able to adapt scheduling to reduce energy consumption while satisfying the desired performance constraints.
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| 32. |
- Chen, Qing, et al.
(författare)
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On Negative Diagonal Elements in the Diffusion Coefficient Matrix of Multicomponent Systems
- 2018
-
Ingår i: JOURNAL OF PHASE EQUILIBRIA AND DIFFUSION. - : Springer. - 1547-7037 .- 1863-7345. ; 39:5, s. 592-596
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Tidskriftsartikel (refereegranskat)abstract
- In multicomponent systems the diffusion coefficient turns into a matrix. The diagonal elements represent diffusion of a species caused by its own concentration gradient. In a thermodynamically stable binary alloy it is easy to see that this diagonal element must be positive but in a multicomponent system it is less obvious. The sign of the diagonal elements in the general case is discussed in this report. It is shown that the sign of an individual diagonal element has no physical meaning but can be changed by changing the dependent concentration variable. Only the sum of all the diagonal elements need to be positive in a stable system.
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| 33. |
- Chen, W, et al.
(författare)
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Fabrication and luminescence of ZnS : Mn2+ nanoflowers
- 2005
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Ingår i: Journal of Nanoscience and Nanotechnology. - : American Scientific Publishers. - 1533-4880 .- 0000-0000. ; 5:9, s. 1309-1322
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Tidskriftsartikel (refereegranskat)abstract
- Visually striking nanoflowers composed of ZnS:Mn2+ nanoparticles are prepared and characterized. The configurations of these fractal structures are very sensitive to both the pH values of the particle solutions from which they are precipitated and the substrates on which they are deposited. At pH 2.2, the fractal structures resemble trees without leaves; at pH 7.7, they are tree-like with four arms and at pH 11.0 they resemble trees with six arms. High resolution transmission microscopy reveals that the nanoflowers are composed of ZnS:Mn2+ nanoparticles of 2-5 nm in size. X-ray photoelectron spectral data indicate that the sample compositions of nitrogen, chlorine, and sulfur vary gradually with pH values of the solutions. These changes may have an impact on both the fractal configuration and the luminescence properties. The emission spectra of the particle solutions at pH values of 2.2 and 11.0 are similar with the emission maximum at 475 nm. As the pH value approaches 7.7, the emission spectral maximum shifts to longer wavelengths. At a pH value of 7.7, the emission peak wavelength is the reddest, 520 nm. The emission peak of the nanoflowers at a pH value of 9.3 is 510 nm, while the emission spectrum of the nanoflowers at 5.2 has two peaks at 500 nm and 440 nm, respectively. These blue-green emissions are attributed to defects and are the dominant luminescence from the nanoflowers. The emission from Mn2+ dopant is only observed in the delayed spectra of the fractal solid samples.
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| 34. |
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| 35. |
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| 36. |
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| 37. |
- Dillner, J, et al.
(författare)
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Epidemiology of human papillomavirus infection
- 2000
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Ingår i: Scandinavian journal of urology and nephrology. Supplementum. - : Informa UK Limited. - 0300-8886 .- 0000-0000 .- 0036-5599. ; 34:205, s. 194-200
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Tidskriftsartikel (refereegranskat)
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| 38. |
- Dilner, David, et al.
(författare)
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Thermodynamic Assessment of the Fe-Ca-S, Fe-Mg-O and Fe-Mg-S Systems
- 2016
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Ingår i: Journal of Phase Equilibria and Diffusion. - : Springer-Verlag New York. - 1547-7037 .- 1863-7345. ; , s. 1-16
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Tidskriftsartikel (refereegranskat)abstract
- Thermodynamic descriptions of the Fe-Mg-O, Fe-Ca-S and Fe-Mg-S systems are all important in order to perform thermodynamic calculations related to the steelmaking process. The experimental information of many sulphur-containing systems, including Fe-Ca-S and Fe-Mg-S, is lacking and they are here thus approximated to behave similarly to the corresponding oxygen systems. This study presents a description of the Fe-Mg-O system in good agreement with experimental information. Additionally, descriptions of the Fe-Ca-S and Fe-Mg-S systems are presented. These descriptions may be reasonable estimations considering the lack of experimental information.
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| 39. |
- Drevenhorn, Eva, et al.
(författare)
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Counseling Hypertensive patients: an observational study of 21 public health nurses
- 2001
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Ingår i: Clinical Nursing Research. - : SAGE Publications. - 1054-7738 .- 0000-0000. ; 10:4, s. 369-386
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Tidskriftsartikel (refereegranskat)abstract
- This study observed the public health nurse's and the patient's activity level during blood pressure measurement and the kind of nonpharmacological treatment that was given. Using the Nurse Practitioner Rating Form, three structured observations were made of 21 public health nurses at their offices at health care centers. The nurses were randomly selected from 22 health care centers in Southern Sweden. The public health nurses used nonpharmacological treatment at 18 out of 63 visits, mainly diet and physical activity. The nonpharmacological conversation had a psychosocial aspect at 15 observations. During the visits, most of the facts and advice concerned somatic aspects of health promotion. Almost all patients were asked about their medication. At more than half of the observations, the nurses and the patients met at the same medium or high communication level. The nurses need training and information about nonpharmacological treatment to practice health promotion in hypertension care.
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| 40. |
- Duarte, Margarida Taborda, et al.
(författare)
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Microstructural modeling approach applied to rock material
- 2005
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Ingår i: Journal of materials engineering and performance (Print). - : Springer Science and Business Media LLC. - 1059-9495 .- 1544-1024 .- 0000-0000. ; 14:1, s. 104-111
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Tidskriftsartikel (refereegranskat)abstract
- The importance of the microstructural parameters in rock mechanical behavior has been investigated by several authors. Moreover, the Weibull statistical model has been used to characterize the heterogeneity of several materials on the basis of the concept that the microscopic defects within the material determine their mechanical strength. The modeling of different rocks is a topic that is fundamental for the prediction of rock fragmentation. In this article, the analysis of rock microstructure is performed using the microstructural modeling approach, which consists of the simplification, quantification, and modeling of the main properties of rock microstructure. The grain size, grain shape, and microcracks are modeled by means of statistical density functions, namely, Cauchy, chi-squared, exponential, extreme value, gamma, Laplace, normal, uniform, and Weibull. It is found that the Weibull distribution is the most appropriate statistical model of the grain size and grain shape, when compared with the other eight statistical models. Regarding microcracks, the results show that the gamma distribution is the most appropriate model. The Weibull and gamma distributions are then used to analyze the heterogeneity of the microstructure. This is done by comparison of the statistical models of each microstructural property evaluated in several thin sections of the same rock. It is found that with respect to grain size and grain shape, the rock is homogeneous, while the size distribution of the microcracks shows a clear trend toward less homogeneity. The microstructural modeling approach is important for modeling, characterizing, and analyzing the microstructure of rock material. Among other applications, it can be used to explain differences in the mechanical behavior obtained in testing several specimens.
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| 41. |
- Dyal Ukabhai, K., et al.
(författare)
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Formation of Ti2Cu in Ti-Cu Alloys
- 2022
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Ingår i: JOURNAL OF PHASE EQUILIBRIA AND DIFFUSION. - : Springer Nature. - 1547-7037 .- 1863-7345. ; 43:3, s. 332-344
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Tidskriftsartikel (refereegranskat)abstract
- One of the major issues with dental implants is failure due to bacterial infection, and additions of copper are known to improve the antimicrobial properties of Ti alloys. There are inconsistencies in the Ti rich area of the Cu-Ti binary phase diagram, hence the need to find out if Ti2Cu or Ti3Cu is formed, and to identify the type of formation of Ti2Cu. Four alloys: 20, 33, 40 and 50 Cu (mass%) were produced by arc melting and studied using SEM, XRD and DSC. The reactions were derived, and the temperatures of the reactions were determined by DSC. The formation of Ti2Cu is congruent, and no Ti3Cu was found.
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| 42. |
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| 43. |
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| 44. |
- Forsberg, S
(författare)
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Optimization of thermodynamic properties of the K2O-SiO2 system at high temperatures
- 2002
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Ingår i: Journal of Phase Equilibria. - 1054-9714. ; 23:3, s. 211-7
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Tidskriftsartikel (refereegranskat)abstract
- An optimized set of thermodynamic functions for the K2O-SiO2 system at 10(5) Pa pressure was obtained by considering available phase diagram and thermodynamic data. KSi0.25O and SiO2 were selected as components for the liquid phase. With respect to these components, the highly non-ideal interactions of potassium oxide and silica could be described by using only three temperature-independent Redlich-Kister coefficients for the excess G of the liquid phase. The result is in good agreement with experimental data.
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| 45. |
- Friis, Martin, et al.
(författare)
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Control of thermal spray processes by means of process maps and process windows
- 2003
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Ingår i: Journal of Thermal Spray Technology. - : Springer Science and Business Media LLC. - 1544-1016 .- 0000-0000 .- 1059-9630. ; 12:1, s. 44-52
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Tidskriftsartikel (refereegranskat)abstract
- A general method to map and control thermal spray processes, ensuring predefined levels of selected final coating properties, is presented. The method relies on monitoring and individually controlling particle velocity and particle temperature through selected spray gun parameters. Mapping of the process results in process maps describing the individual effect of particle velocity and particle temperature on each selected coating property of concern; in this case, different features of the microstructure and deposition efficiency. From the information provided by the process maps, a process window is constructed. This process window provides the limits within which particle velocity and particle temperature are allowed to vary to fulfill a predefined coating specification. To verify the method, two predefined thermal barrier top coatings one porous and one dense-were produced by air plasma spray with satisfactory results.
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| 46. |
- Fu, Ying, 1964, et al.
(författare)
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Wave packet transmission in a ZnO nanorod under the influence of repulsive/attractive scattering center
- 2004
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Ingår i: Journal of Nanoscience and Nanotechnology. - : AMER SCIENTIFIC PUBLISHERS. - 1533-4880 .- 1533-4899 .- 0000-0000. ; 4:02-Jan, s. 91-93
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Tidskriftsartikel (refereegranskat)abstract
- We study electron wave packet propagation and scattering in ZnO nanorods. By solving the time-dependent three-dimensional Schrodinger equation, we were able to describe propagation and dynamics of the scattering process of the wave packet by ionized impurities. Scattering behavior of the wave packet by an attractive/repulsive scattering center is clearly demonstrated.
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| 47. |
- Gaist, D, et al.
(författare)
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Stroke research in GenomEUtwin
- 2003
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Ingår i: Twin research : the official journal of the International Society for Twin Studies. - : Cambridge University Press (CUP). - 1369-0523. ; 6:5, s. 442-447
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Tidskriftsartikel (refereegranskat)
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| 48. |
- Garpenholt, Ö., et al.
(författare)
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Invasive disease due to Haemophilus influenzae type b during the first six years of general vaccination of Swedish children
- 2000
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Ingår i: Acta Paediatrica. - : Wiley. - 0803-5253 .- 1651-2227 .- 0000-0000. ; 89:4, s. 471-474
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Tidskriftsartikel (refereegranskat)abstract
- Since 1992-93 vaccination against Haemophilus influenzae type b (Hib) has been included in the general Swedish childhood vaccination programme. The aim of the present study is to describe the epidemiology, identify and describe vaccine failures and calculate vaccine effectiveness during the first 6 y after introduction of vaccination against Hib. Laboratory reports of blood and cerebrospinal isolates to the Swedish Institute for Infectious Disease Control were used as the source for identifying the patients. Additional information was subsequently obtained from physicians and parents of children who had developed the disease during the study period. Vaccine failures were identified and vaccine effectiveness calculated. During the study period, 152 cases of invasive H. influenzae were identified in the age group 0-14 y. During the 6-y period, 6 true vaccine failures, 6 apparent vaccine failures and 1 possible vaccine failure were found in nearly two million vaccinated child-years. The effectiveness of the Hib vaccination in the birth cohort of children 1993 to 1997 in Sweden was calculated to be 96.1% (95% confidence interval 94.2-97.5). The study supports earlier studies from several countries that conjugated Hib vaccination introduced in general childhood vaccination programs is effective and substantially decreases suffering from invasive Hib diseases.
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| 49. |
- Göransson, Anders, et al.
(författare)
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Effect of electrical stimulation on the activity of muscle exoproteases during beef ageing
- 2002
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Ingår i: Food Science and Technology International. - : SAGE Publications. - 1532-1738 .- 0000-0000 .- 1082-0132. ; 8:5, s. 285-293
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Tidskriftsartikel (refereegranskat)abstract
- Electrical stimulation was applied to bull carcasses at a low voltage (80 V, 15 Hz, 30 s). The pH decline, tenderness, myofibrillar protein degradation, and exoprotease activities were studied in semimembranosus and longissimus dorsi muscles during the ageing process. Electrical stimulation was found to be beneficial for tenderness in longissimus dorsi muscle as determined by shear force and confirmed by the earlier appearance of the 30-kDa band in the electrically stimulated muscles. The acceleration of the glycolytic process after electrical stimulation affected exoprotease activities, in turn induced the activation of dipeptidyl peptidases I and II and the inhibition of methionyl, leucyl and pyroglutamyl aminopeptidases; however electrical stimulation did not influence alanyl aminopeptidase and arginyl aminopeptidase.
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| 50. |
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