| 1. |
- Ekberg, O., et al.
(författare)
-
Effect of Barium Sulfate Contrast Medium on Rheology and Sensory Texture Attributes in a Model Food
- 2009
-
Ingår i: Acta Radiologica. - : SAGE Publications. - 0284-1851 .- 1600-0455. ; 50:2, s. 131-138
-
Tidskriftsartikel (refereegranskat)abstract
- Background: The swallowing process can be visualized using videoradiography, by mixing food with contrast medium, e.g., barium sulfate (BaSO4), making it radiopaque. The sensory properties of foods may be affected by adding this medium. Purpose: To evaluate if and to what extent sensory and rheological characteristics of mango puree were altered by adding barium sulfate to the food. Material and Methods: This study evaluated four food samples based on mango puree, with no or added barium sulfate contrast medium (0%, 12.5%, 25.0%, and 37.5%), by a radiographic method, and measured sensory texture properties and rheological characteristics. The sensory evaluation was performed by an external trained panel using quantitative descriptive analysis. The ease of swallowing the foods was also evaluated. Results: The sensory texture properties of mango puree were significantly affected by the added barium in all evaluated attributes, as was the perception of particles. Moreover, ease of swallowing was significantly higher in the sample without added contrast medium. All samples decreased in extensional viscosity with increasing extension rate, i.e., all samples were tension thinning. Shear viscosity was not as dependent on the concentration of BaSO4 as extensional viscosity. Conclusion: Addition of barium sulfate to a model food of mango puree has a major impact on perceived sensory texture attributes as well as on rheological parameters.
|
|
| 2. |
- Crispin, Xavier, 1972-, et al.
(författare)
-
Electronic delocalization in discotic liquid crystals : A joint experimental and theoretical study
- 2004
-
Ingår i: Journal of the American Chemical Society. - : American Chemical Society (ACS). - 0002-7863 .- 1520-5126. ; 126:38, s. 11889-11899
-
Tidskriftsartikel (refereegranskat)abstract
- Discotic liquid crystals emerge as very attractive materials for organic-based (opto)electronics as they allow efficient charge and energy transport along self-organized molecular columns. Here, angle-resolved photoelectron spectroscopy (ARUPS) is used to investigate the electronic structure and supramolecular organization of the discotic molecule, hexakis(hexylthio)diquinoxalino[2,3-a:2′,3′-c]phenazine, deposited on graphite. The ARUPS data reveal significant changes in the electronic properties when going from disordered to columnar phases, the main feature being a decrease in ionization potential by 1.8 eV following the appearance of new electronic states at low binding energy. This evolution is rationalized by quantum-chemical calculations performed on model stacks containing from two to six molecules, which illustrate the formation of a quasi-band structure with Bloch-like orbitals delocalized over several molecules in the column. The ARUPS data also point to an energy dispersion of the upper π-bands in the columns by some 1.1 eV, therefore highlighting the strongly delocalized nature of the π-electrons along the discotic stacks.
|
|
| 3. |
- Löfwander, T., et al.
(författare)
-
Superconducting d-wave junctions : The disappearance of the odd ac components
- 1998
-
Ingår i: Physical Review B Condensed Matter. - College Park, Md : American Physical Society. - 0163-1829 .- 1095-3795. ; 57:6, s. R3225-R3228
-
Tidskriftsartikel (refereegranskat)abstract
- We study voltage-biased superconducting planar d-wave junctions for arbitrary transmission and arbitrary orientation of the order parameters of the superconductors. For a certain orientation of the superconductors the odd ac components disappear, resulting in a doubling of the Josephson frequency. We study the sensitivity of this disappearance to orientation and compare with experiments on grain boundary junctions. We also discuss the possibility of a current flow parallel to the junction.
|
|
| 4. |
- Zoller, P, et al.
(författare)
-
Quantum information processing and communication - Strategic report on current status, visions and goals for research in Europe
- 2005
-
Ingår i: European Physical Journal D. Atomic, Molecular, Optical and Plasma Physics. - : Springer Science and Business Media LLC. - 1434-6060 .- 1434-6079. ; 36:2, s. 203-228
-
Tidskriftsartikel (refereegranskat)abstract
- We present an excerpt of the document "Quantum Information Processing and Communication: Strategic report on current status, visions and goals for research in Europe", which has been recently published in electronic form at the website of FET (the Future and Emerging Technologies Unit of the Directorate General Information Society of the European Commission, http://www.cordis.lu/ist/fet/qipc-sr.htm). This document has been elaborated, following a former suggestion by FET, by a committee of QIPC scientists to provide input towards the European Commission for the preparation of the Seventh Framework Program. Besides being a document addressed to policy makers and funding agencies (both at the European and national level), the document contains a detailed scientific assessment of the state-of-the-art, main research goals, challenges, strengths, weaknesses, visions and perspectives of all the most relevant QIPC sub-fields, that we report here.
|
|
| 5. |
- Beiu, V., et al.
(författare)
-
Aspects of computing with locally connected networks
- 2012
-
Ingår i: AIP Conference Proceedings. - : AIP. - 1551-7616 .- 0094-243X. - 9780735410916 ; 1479:1, s. 1875-1879
-
Konferensbidrag (refereegranskat)abstract
- This paper outlines an ongoing effort to develop and use networks of nanoscalememristivecomponents for unconventional information processing.
|
|
| 6. |
- Chesneau, A., et al.
(författare)
-
Teaching nanoscience across scientific and geographical borders-A European Master programme in nanoscience and nanotechnology
- 2008
-
Ingår i: Journal of Physics: Conference Series. - : IOP Publishing. - 1742-6588 .- 1742-6596. ; 100:Part 3
-
Konferensbidrag (refereegranskat)abstract
- Within the Erasmus Mundus Master (EMM) Programme, five European Universities (KU Leuven, Belgium, Chalmers University of Technology, Sweden, Delft University of Technology and Leiden University, the Netherlands, and the University of Dresden, Germany) have joined forces to offer a unique master programme in Nanoscience and Nanotechnology, EMM-nano, at the cutting edge of state-of-the-art research. The students design and build their individual area of specialisation within nanophysics, nanotechnology, biophysics, biotechnology through their choice of trajectory between the partners. We discuss some of the challenges related to the crossdisciplinary nature of the field, educational activities in cleanrooms, and issues related to the integration of teaching programmes across the borders within Europe.
|
|
| 7. |
|
|
| 8. |
- De Gracia Triviño, Juan Angel, et al.
(författare)
-
Complete Active Space Methods for NISQ Devices: The Importance of Canonical Orbital Optimization for Accuracy and Noise Resilience
- 2023
-
Ingår i: Journal of Chemical Theory and Computation. - : American Chemical Society (ACS). - 1549-9618 .- 1549-9626. ; 19:10, s. 2863-2872
-
Tidskriftsartikel (refereegranskat)abstract
- To avoid the scaling of the number of qubits with the size of the basis set, one can divide the molecular space into active and inactive regions, which is also known as complete active space methods. However, selecting the active space alone is not enough to accurately describe quantum mechanical effects such as correlation. This study emphasizes the importance of optimizing the active space orbitals to describe correlation and improve the basis-dependent Hartree-Fock energies. We will explore classical and quantum computation methods for orbital optimization and compare the chemically inspired ansatz, UCCSD, with the classical full CI approach for describing the active space in both weakly and strongly correlated molecules. Finally, we will investigate the practical implementation of a quantum CASSCF, where hardware-efficient circuits must be used and noise can interfere with accuracy and convergence. Additionally, we will examine the impact of using canonical and noncanonical active orbitals on the convergence of the quantum CASSCF routine in the presence of noise.
|
|
| 9. |
|
|
| 10. |
- Hall, Gunnar, et al.
(författare)
-
Sensory design of foods for the elderly
- 2008
-
Ingår i: Annals of Nutrition and Metabolism. - 0250-6807 .- 1421-9697. ; 52, s. 25-28
-
Tidskriftsartikel (refereegranskat)abstract
- Background/Aims: Elderly persons with dysphagia need food that requires little or no chewing, that is easy to swallow and has attractive sensory characteristics. The aim was to investigate how ingredients varied according to experimental designs influence the perceived sensory, chewing and swallowing characteristics of two types of texture-modified model foods. Methods: Meat- and carrot-based, texture-modified model foods were produced. The following parameters were varied: particle size, fat content, starch and egg composition. The samples were studied using sensory analyses, focus group discussions and consumer studies. Results: The design parameters mainly had an impact on sensory texture attributes. The experts in the focus groups selected three products of each type which were regarded as being optimal for older persons. All the products contained a high proportion of egg yolk and a low amount of starch. Older consumers considered all the selected products to be easy to chew and swallow. The differences between older persons in nursing homes compared to those living in their own homes could be linked to health. Conclusions: Optimization of factors influencing food quality through the use of experimental designs in combination with sensory and consumer studies is required in order to meet the needs and demands of older people.
|
|
