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| 2. |
- Carlsson, Christina, 1968, et al.
(författare)
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Screening for genetic mutations
- 1996
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Ingår i: Nature. - : Springer Science and Business Media LLC. - 0028-0836 .- 1476-4687. ; 380:6571, s. 207-
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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| 3. |
- Gotfredsen, Klaus, et al.
(författare)
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Implants and/or teeth: consensus statements and recommendations.
- 2008
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Ingår i: Journal of oral rehabilitation. - : Wiley. - 1365-2842 .- 0305-182X. ; 35:Suppl 1, s. 2-8
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Forskningsöversikt (refereegranskat)abstract
- In August 23-25, 2007, the Scandinavian Society for Prosthetic Dentistry in collaboration with the Danish Society of Oral Implantology arranged a consensus conference on the topic 'Implants and/or teeth'. It was preceded by a workshop in which eight focused questions were raised and answered in eight review articles using a systematic approach. Twenty-eight academicians and clinicians discussed the eight review papers with the purpose to reach consensus on questions relevant for the topic. At the conference the consensus statements were presented as well as lectures based on the review articles. In this article the methods used at the consensus workshop are briefly described followed by the statements with comments.
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| 6. |
- Azremi, A.A.H., et al.
(författare)
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On diversity performance of two-element coupling element based antenna structure for mobile terminal
- 2010
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Ingår i: EuCAP 2010 Fourth European Conference on Antennas and Propagation, Barcelona, 12-16 April 2010.
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Konferensbidrag (refereegranskat)abstract
- In wireless communication systems, multipath interference has a significant impact on system design and performance. Fast fading is caused by the coherent summation of one or more echoes from many reflection points reaching the receive antenna. Antenna diversity can be used to mitigate multipath fading. The main challenge of antenna diversity in practical application is the integration of multiple antennas on a small ground plane. Two-element antenna structure based on coupling element antenna concept for diversity application has been studied in previous work and it has shown to be feasible for low frequency diversity application with stable and low envelope correlation across wide frequency range. The studied structure has been tuned to be operating at 1600 MHz for measurement evaluation purpose. This paper presents an analysis of diversity performance of the structure in terms of efficiencies, envelope correlation, and apparent and effective diversity gains in isotropic (i.e. statistically uniform) propagation channel, using spherical near-field technique in an ideal line-of-sight environment (anechoic chamber) and inside reverberation chamber. The envelope correlation is less than 0.1 and the diversity gain is equal to 10.2 dB at 99% reliability level using selection combining technique across simulation and both measurement methods. The measurement techniques are compared to show how accurately the diversity performance of a mobile terminal antenna can be estimated.
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| 7. |
- Bergvall, Anders, 1981, et al.
(författare)
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Influence of 0001 tilt grain boundaries on the destruction of the quantum Hall effect in graphene
- 2015
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Ingår i: Physical Review B - Condensed Matter and Materials Physics. - 2469-9950 .- 2469-9969. ; 91:24
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Tidskriftsartikel (refereegranskat)abstract
- The half-integer quantum Hall effect (QHE) is often suppressed in graphene grown by chemical vapor deposition on metals. The reason behind the suppression is unclear, and we hypothesize that it might be connected to extended defects in the material. In this paper we present results for the quantum Hall effect in graphene with [0001] tilt grain boundaries connecting opposite sides of Hall bar devices. Such grain boundaries contain 5-7 ring complexes that host defect states that hybridize to form bands with varying degree of metallicity depending on grain-boundary defect density. In a magnetic field, edge states on opposite sides of the Hall bar can be connected by the defect states along the grain boundary. This destroys Hall resistance quantization and leads to nonzero longitudinal resistance. Anderson disorder can partly recover quantization, where current instead flows along returning paths along the grain boundary depending on defect density in the grain boundary and on disorder strength. Since grain sizes in graphene made by chemical vapor deposition are usually small, this may help explain why the quantum Hall effect is usually poorly developed in devices made of this material.
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| 8. |
- Bielecki, Johan, 1982, et al.
(författare)
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Electrospray sample injection for single-particle imaging with x-ray lasers
- 2019
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Ingår i: Science advances. - : American Association for the Advancement of Science (AAAS). - 2375-2548. ; 5:5
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Tidskriftsartikel (refereegranskat)abstract
- The possibility of imaging single proteins constitutes an exciting challenge for x-ray lasers. Despite encouraging results on large particles, imaging small particles has proven to be difficult for two reasons: not quite high enough pulse intensity from currently available x-ray lasers and, as we demonstrate here, contamination of the aerosolized molecules by nonvolatile contaminants in the solution. The amount of contamination on the sample depends on the initial droplet size during aerosolization. Here, we show that, with our electrospray injector, we can decrease the size of aerosol droplets and demonstrate virtually contaminant-free sample delivery of organelles, small virions, and proteins. The results presented here, together with the increased performance of next-generation x-ray lasers, constitute an important stepping stone toward the ultimate goal of protein structure determination from imaging at room temperature and high temporal resolution.
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| 9. |
- Blaabjerg, K, et al.
(författare)
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Effect of heat-treatment, phytate, xylanase and soaking time on inositol phosphate degradation in vitro in wheat, soybean meal and rapeseed cake
- 2010
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Ingår i: Animal Feed Science and Technology. - : Elsevier BV. - 0377-8401. ; 162:3-4, s. 123-134
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Tidskriftsartikel (refereegranskat)abstract
- An in vitro method was used to evaluate the degradation of myo-inositol hexakisphosphate (InsP6) in non-heat-treated wheat (NHW), heat-treated wheat (HW), soybean meal (SBM) or rapeseed cake (RSC) soaked separately or in combination. The feedstuffs were soaked in water (20°C) and samples were collected after 2, 4, 8 and 24h. The following hypotheses were tested: (1) phytase addition to soaked NHW or HW improves InsP6 degradation, (2) phytase and xylanase addition to soaked NHW or HW improves InsP6 degradation further compared solely with phytase, (3) phytase addition to SBM or RSC improves InsP6 degradation, and (4) soaking of SBM or RSM together with NHW (ratio 1:1) stimulates InsP6 degradation from SBM or RSC due to the activity of wheat phytases, whereby phytase addition results in no further InsP6 degradation. Additionally, degradation of lower inositol phosphates (myo-inositol pentakisphosphate-myo-inositol bisphosphate or InsP5-InsP2) was studied to verify if InsP6 degradation leads to an accumulation of InsP5-InsP2.In NHW or HW addition of phytase alone or with xylanase had no significant effect on InsP6 degradation. However, InsP6 degradation was influenced by the interaction between heat-treatment and soaking time (P≤0.001). This was mainly due to a smaller proportion of non-degraded InsP6-P at 24h in HW compared with NHW (0.13 vs. 0.47) (P≤0.001) possibly caused by structural changes imposed by the heat-treatment. In SBM, RSC, SBM/NHW or RSC/NHW, the InsP6 degradation was affected by the interaction between phytase addition and soaking time (P≤0.001) as phytase reduced the proportion of non-degraded InsP6-P at 2, 4, 8 or 24h. Soaking of NHW, SBM or RSC (without phytase) separately resulted in a limited InsP6 degradation, whereas a pronounced InsP6 degradation occurred when RSC or SBM were soaked together with NHW (without phytase) because wheat phytases degraded InsP6 in SBM or RSC. However, addition of phytase to SBM/NHW or RSC/NHW increased further the degradation of InsP6 indicating that endogenous wheat phytases were not sufficient. The formation of InsP5-InsP2-P was very small (40-180μg/kg DM) during the degradation of InsP6 indicating a rapid and almost complete degradation of these compounds.In conclusion, the effect of phytase on InsP6 degradation during soaking depends on the feedstuff and processing of the feedstuff. InsP6 degradation results in a negligible accumulation of InsP5-InsP2. Soaking of plant feedstuffs prior to feeding of pigs may improve P digestibility compared with dry feeding, but studies with pigs are required to clarify this.
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