| 1. |
- Abdollahi, Abbas, et al.
(författare)
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Emotional intelligence moderates perceived stress and suicidal ideation among depressed adolescent inpatients
- 2016
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Ingår i: Personality and Individual Differences. - : Elsevier BV. - 0191-8869 .- 1873-3549. ; 102, s. 223-228
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Tidskriftsartikel (refereegranskat)abstract
- Because it remains one of the third leading causes of death among adolescents around the world, suicide is a major public health concern. This study was designed in response to this concern by examining the relationships among perceived stress, emotional intelligence, and suicidal ideation and to test the moderating role of emotional intelligence in the relationship between perceived stress and suicidal ideation. A sample of depressed adolescents (n = 202) was recruited from five hospitals in Tehran, Iran, and then asked to complete measures of patient health, suicidal ideation, perceived stress, and emotional intelligence. Structural Equation Modeling showed that depressed adolescent in-patients with high levels of perceived stress and low levels of emotional intelligence were more likely to report suicidal ideation. Multi-group analysis indicated that depressed in-patients high in both perceived stress and emotional intelligence had less suicidal ideation than others. The findings support the notion that perceived stress acts as a vulnerability factor that increase suicidal ideation among depressed inpatients. Suicidal history moderated the relationship between emotional intelligence and suicidal ideation. These findings also highlight the importance of emotional intelligence as a buffer in the relationship between perceived stress and suicidal ideation.
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| 2. |
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| 3. |
- Engberg, Adam, et al.
(författare)
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An open source extrusion bioprinter based on the E3D motion system and tool changer to enable FRESH and multimaterial bioprinting
- 2021
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Ingår i: Scientific Reports. - : Springer Nature. - 2045-2322. ; 11:1
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Tidskriftsartikel (refereegranskat)abstract
- Bioprinting is increasingly used to create complex tissue constructs for an array of research applications, and there are also increasing efforts to print tissues for transplantation. Bioprinting may also prove valuable in the context of drug screening for personalized medicine for treatment of diseases such as cancer. However, the rapidly expanding bioprinting research field is currently limited by access to bioprinters. To increase the availability of bioprinting technologies we present here an open source extrusion bioprinter based on the E3D motion system and tool changer to enable high-resolution multimaterial bioprinting. As proof of concept, the bioprinter is used to create collagen constructs using freeform reversible embedding of suspended hydrogels (FRESH) methodology, as well as multimaterial constructs composed of distinct sections of laminin and collagen. Data is presented demonstrating that the bioprinted constructs support growth of cells either seeded onto printed constructs or included in the bioink prior to bioprinting. This open source bioprinter is easily adapted for different bioprinting applications, and additional tools can be incorporated to increase the capabilities of the system.
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| 4. |
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| 5. |
- Gustafsson, Jon Petter, et al.
(författare)
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Aluminium solubility mechanisms in moderately acid Bs horizons of podzolized soils
- 2001
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Ingår i: European Journal of Soil Science. - : Wiley. - 1351-0754 .- 1365-2389. ; 52:4, s. 655-665
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Tidskriftsartikel (refereegranskat)abstract
- The processes controlling the retention and release of aluminium in acid forest soils are still subject to controversy, and therefore a universal hypothesis as to what mechanisms are operating has not been firmly established. By studying the Bs horizons of Swedish and Swiss podzolized soils, and by analysing data in the literature, we have found that aluminium hydroxide, and in some cases also poorly ordered imogolite, may control Al solubility in moderately acid (pH>4.2-4.3) Bs horizons. The strongest evidence in support of the presence of a quickly reacting Al(OH)(3) pool came from the temperature dependence of Al solubility in a Bs horizon, which was consistent with the reaction enthalpy of an Al(OH)3 phase such as gibbsite, and from the observation that the eon activity product for Al(OH)3 was the same regardless of whether equilibrium was reached from over- or undersaturation. The pool of Al(OH)3 is commonly small and may be completely dissolved after large additions of acid. This may be explained by the continuing redissolution of reactive Al(OH)(3) to form less soluble imogolite-type phases. By using the same methods it was found that soil suspensions did not reach equilibrium with poorly ordered imogolite even after 17 days. Thus, imogolite probably does not control Al solubility in the short term in many soils despite the common occurrence of this mineral. This is due to the relatively slow kinetics of imogolite formation and dissolution, especially at low temperatures and at small solution H4SiO4 concentrations.
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| 6. |
- Kokkola, Lydia
(författare)
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Francesco Tullio Altan
- 2012
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Ingår i: Bookbird. - : Project Muse. - 0006-7377 .- 1918-6983. ; 50:2
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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| 7. |
- Kokkola, Lydia
(författare)
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Franz Hohler
- 2012
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Ingår i: Bookbird. - : Project Muse. - 0006-7377 .- 1918-6983. ; 50:2, s. 54-
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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| 8. |
- Lehtinen, Erno, 1951, et al.
(författare)
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Conceptual change in the development of visual expertise
- 2020
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Ingår i: International Journal of Educational Research. - : Elsevier BV. - 0883-0355. ; 100
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Tidskriftsartikel (refereegranskat)abstract
- Changes in working life require knowledge, which is sometimes radically different from existing expertise. Learning based on existing knowledge is not sufficient. Some knowledge is difficult to learn because it is counterintuitive. Research on conceptual change has extensively studied this type of learning challenges while students are learning scientific and mathematical concepts. However, theories of conceptual change have not been widely applied in expertise research. This study re-analyses earlier studies on medical image diagnosing and explores how theories of conceptual change explain the findings. Unlike science learning, the knowledge needed for the medical diagnosis processes did not exclusively consist of one or a few well-defined scientific concepts, but rather involved a system of various types of knowledge and practical skills.
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| 9. |
- Lehtinen, J. J., et al.
(författare)
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Topological changes in the magnetic field of LQ Hya during an activity minimum
- 2022
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Ingår i: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 660
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Tidskriftsartikel (refereegranskat)abstract
- Aims. Previous studies have related surface temperature maps, obtained with the Doppler imaging (DI) technique, of LQ Hya with long-term photometry. Here, we compare surface magnetic field maps, obtained with the Zeeman Doppler imaging (ZDI) technique, with contemporaneous photometry, with the aim of quantifying the star's magnetic cycle characteristics. Methods. We inverted Stokes IV spectropolarimetry, obtained with the HARPSpol and ESPaDOnS instruments, into magnetic field and surface brightness maps using a tomographic inversion code that models high signal-to-noise ratio mean line profiles produced by the least squares deconvolution (LSD) technique. The maps were compared against long-term ground-based photometry acquired with the T3 0.40 m Automatic Photoelectric Telescope (APT) at Fairborn Observatory, which offers a proxy for the spot cycle of the star, as well as with chromospheric Ca II H&K activity derived from the observed spectra. Results. The magnetic field and surface brightness maps reveal similar patterns relative to previous DI and ZDI studies: nonaxisymmetric polar magnetic field structure, void of fields at mid-latitudes, and a complex structure in the equatorial regions. There is a weak but clear tendency of the polar structures to be linked with a strong radial field and the equatorial ones with the azimuthal field. We find a polarity reversal in the radial field between 2016 and 2017 that is coincident with a spot minimum seen in the long-term photometry, although the precise relation of chromospheric activity to the spot activity remains complex and unclear. The inverted field strengths cannot be easily related with the observed spottedness, but we find that they are partially connected to the retrieved field complexity. Conclusions. This field topology and the dominance of the poloidal field component, when compared to global magnetoconvection models for rapidly rotating young suns, could be explained by a turbulent dynamo, where differential rotation does not play a major role (so-called alpha(2)Omega(2) or alpha(2) dynamos) and axi- and non-axisymmetric modes are excited simultaneously. The complex equatorial magnetic field structure could arise from the twisted (helical) wreaths often seen in these simulations, while the polar feature would be connected to the mostly poloidal non-axisymmetric component that has a smooth spatial structure.
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