| 1. |
|
|
| 2. |
- Nagda, Vinit, et al.
(author)
-
Image-based 3D characterization and reconstruction of heterogeneous battery electrode microstructure
- 2023
-
In: Computational materials science. - : Elsevier BV. - 0927-0256 .- 1879-0801. ; 223
-
Journal article (peer-reviewed)abstract
- There is a constant need for improvement of lithium-ion batteries (LIB), in particular, charge/discharge time, capacity, and safety to fulfil the increasing performance requirements. The performance of LIB materials is heavily dependent on their 3D microstructural characteristics. Physics-based 3D microstructure models that resolve the microstructural characteristics of all phases in a porous electrode are critical for quantifying the interplay between battery microstructure and performance. In this work, we employed a machine-learning al-gorithm to segment the active particles from previously published tomographic data obtained for an inhomo-geneous porous microstructure of the LIB cathode electrode. We performed geometric characterization analysis using the segmented data, extracting the particle size distribution, porosity, tortuosity, and the connectivity of the particle system. We also present a methodology for stochastic reconstruction of electrode microstructure which is statistically equivalent to the empirical microstructure in terms of geometric characteristics. We use spherical harmonics to accurately represent the non-spherical particle morphology and resolve the contact be-tween the particles. The stochastic reconstruction technique proposed herein enables generation of virtual microstructure designs beyond the limitations of empirical datasets. The methods developed in this work are presented via open source.
|
|
| 3. |
- Voronkov, Artem, 1990-, et al.
(author)
-
Natural vs. Technical Language Preference and its Impact on Firewall Configuration
- 2020
-
In: HCII 2020: HCI for Cybersecurity, Privacy and Trust. - Cham : Springer. ; , s. 261-270
-
Conference paper (peer-reviewed)abstract
- Firewalls are network security components designed to regulate incoming and outgoing traffic to protect computers and networks. The behavior of firewalls is dictated by its configuration file, which is a written sequence of rules expressed by a set of keys and parameters. In this paper, we investigate whether certain representations of firewall rule sets can affect understandability. To collect data for our investigation, we designed an online survey for an audience who are familiar with firewalls, in which we aimed to compare two different rule set representations: iptables and English. We collected data from 56 participants. Our results show that participants’ perception of a certain rule set representation depends on their firewall expertise. Participants with basic or intermediate knowledge of firewalls consider rule sets expressed in English to be 40% easier to understand, whereas advanced or expert firewall users deemed it to be 27% more difficult. We will discuss the reasons for these results and describe their possible implications.
|
|
| 4. |
- Foroughi, Javad, et al.
(author)
-
Knitted Carbon-Nanotube-Sheath/Spandex-Core Elastomeric Yarns for Artificial Muscles and Strain Sensing
- 2016
-
In: ACS Nano. - : American Chemical Society (ACS). - 1936-0851 .- 1936-086X.
-
Journal article (peer-reviewed)abstract
- Highly stretchable, actuatable, electrically conductive knitted textiles based on Spandex (SPX)/CNT (carbon nanotube) composite yarns were prepared by an integrated knitting procedure. SPX filaments were continuously wrapped with CNT aerogel sheets and supplied directly to an interlocking circular knitting machine to form the three-dimensional electrically conductive and stretchable textiles. By adjusting the SPX/CNT feed ratio, the fabric electrical conductivities could be tailored in the range of 870 to 7092 S/m. The electrical conductivity depended on tensile strain, with a linear and largely hysteresis-free resistance change occurring on loading and unloading between 0 and 80% strain. Electrothermal heating of the stretched fabric caused large tensile contractions of up to 33%, and generated a gravimetric mechanical work capacity during contraction of up to 0.64 kJ/kg and a maximum specific power output of 1.28 kW/kg, which far exceeds that of mammalian skeletal muscle. The knitted textile provides the combination of strain sensing and the ability to control dimensions required for smart clothing that simultaneously monitors the wearer's movements and adjusts the garment fit or exerts forces or pressures on the wearer, according to needs. The developed processing method is scalable for the fabrication of industrial quantities of strain sensing and actuating smart textiles.
|
|
| 5. |
- Stamenković, Dušan, Associate Professor, 1984-, et al.
(author)
-
Prototype theory and translation equivalent selection: The case of motion verbs
- 2016
-
In: Studia Neophilologica. - : Taylor & Francis Group. - 0039-3274 .- 1651-2308. ; 89:1, s. 81-94
-
Journal article (peer-reviewed)abstract
- The paper aims to investigate whether prototypicality effects (e.g., Rosch 1973a, b; Lakoff 1987) correlate with selecting Serbian translation equivalents of English motion verbs in cases in which we have no context determined (one-word translation). By applying three empirical stages, we have generated a potential prototypicality list for English motion verbs. We have then tested 60 translators in another procedure, so as to check whether there were statistically valid links between a verb’s typicality and the choice of a translation equivalent. The results indicate that a higher degree of prototypicality positively correlates with a more consistent choice of a translation equivalent. At the same time, there is a negative correlation between the determined prototypicality and the diversity of translation equivalents offered for the verb in question. These results may reveal certain psychological aspects of translation, while simultaneously corroborating the tenets of prototype theory.
|
|
| 6. |
- Loyprasert, S., et al.
(author)
-
Sub-attomolar detection of cholera toxin using a label-free capacitive immunosensor
- 2010
-
In: Biosensors & Bioelectronics. - : Elsevier BV. - 1873-4235 .- 0956-5663. ; 25:8, s. 1977-1983
-
Journal article (peer-reviewed)abstract
- A label-free immunosensor for the direct detection of cholera toxin (CT) at sub-attomolar level has been developed based on potential-step capacitance measurements. Anti-CT antibody was adsorbed on gold nanoparticles (AuNPs) incorporated on a polytyramine-modified gold electrode. The concentration of CT was determined by detecting the change of capacitance caused by the formation of antibody-antigen complexes. By using AuNPs adsorbed to the sensing surface, the signal was dramatically increased leading to a significantly more sensitive assay. In fact, under optimum conditions the immunosensor could detect CT concentration with a limit of detection of 9 x 10(-20) M or 0.09 aM, with a dynamic range between 0.1 aM and 10 pM. Good analytical reproducibility could be obtained by injecting CT up to 36 times with an RSD of 2.5%. In addition, good performance of the developed immunosensor was achieved when applied to turbid water samples collected from a local stream that were spiked with CT. (c) 2010 Elsevier B.V. All rights reserved.
|
|
| 7. |
- Wang, Huijun, 1988-
(author)
-
A Study on the Reaction between MgO Based Refractories and Slag-Towards the Development of Carbon-free Lining Material
- 2017
-
Doctoral thesis (other academic/artistic)abstract
- In present thesis, the fundamental studies on the reaction between MgO based refractories and slag were undertaken for the development of a carbon-free bonding MgO lining material. Alumina was selected as a potential binder material. Due to MgO-Al2O3 chemical reaction, the developed refractory was bonded by MgO·Al2O3 spinel phase. To begin with, an investigation of the dissolution process of dense MgO and MgO·Al2O3 spinel in liquid slag was carried out. To obtain reliable information for dissolution study, a new experimental method was therefore developed. In this method, a cylinder was rotating centrally in a special designed container with a quatrefoil profile. This method also showed a good reliability in revealing the dissolution mechanism by quenching the whole reaction system. The experimental results showed that the dissolution process of MgO and spinel was controlled by both mass transfer and chemical reaction. It was found that the rapid dissolution of spinel was mainly because of its larger driving force. To improve the resistance against slag penetration, two aspects were studied to develop carbon-free MgO refractory. First, colloidal alumina was used and the effect of its addition into MgO matrix was investigated. The use of colloidal alumina was to form bonding products in the grain boundary of MgO. The results showed that the alumina addition greatly improved the resistance of MgO based refractory against slag penetration in comparison with the decarburized MgO-carbon refractory. It was found that the improvement of resistance was mainly related to the spinel-slag reaction products of CaO·Al2O3 and CaO·MgO·Al2O3 solid phases at the grain boundaries. Second, the effect of particle size distribution on the penetration resistance of MgO was investigated. The most profound improvement against the slag penetration was obtained by using a proper particle size distribution. The results highlighted the importance of considering the refractory structure. Experiments were undertaken to investigate the dissolution mechanism of different types of MgO based refractories in liquid slag. It was observed that the dissolution of spinel bonded MgO refractory was much slower than the decarburized MgO-carbon refractory. The primary dissolution in spinel bonded MgO refractory occurred at the slag-penetrated layer, and the removal of this layer by peeling off enhanced the dissolution rate rapidly.
|
|
| 8. |
- Kass, G E, et al.
(author)
-
Receptor-mediated Mn2+ influx in rat hepatocytes : comparison of cells loaded with Fura-2 ester and cells microinjected with Fura-2 salt
- 1994
-
In: Biochemical Journal. - 0264-6021 .- 1470-8728. ; 302, s. 5-9
-
Journal article (peer-reviewed)abstract
- In single Fura-2 ester-loaded hepatocytes, stimulation by vasopressin, but not emptying of the agonist-sensitive Ca2+ store by 2,5-di-(t-butyl)hydroquinone, resulted in an increase in the rate of Fura-2 fluorescence-quenching by Mn2+. Similarly, in cells microinjected with Fura-2 salt, vasopressin stimulated Mn2+ entry while 2,5-di-(t-butyl)hydroquinone or thapsigargin did not. The pattern of Fura-2 quenching by Mn2+ only correlated with the movement of Mn2+ across the plasma membrane.
|
|
| 9. |
- Berndt Rasmussen, Katharina, 1977-
(author)
-
Är sannolikheter moraliskt relevanta?
- 2011
-
In: Filosofisk Tidskrift. - Stockholm : Thales. - 0348-7482. ; 32:4, s. 27-40
-
Journal article (other academic/artistic)
|
|
| 10. |
|
|
