| 1. |
- Bouyoucef, S E, et al.
(författare)
-
Poster Session 2 : Monday 4 May 2015, 08
- 2015
-
Ingår i: European Heart Journal Cardiovascular Imaging. - : Oxford University Press (OUP). - 2047-2404 .- 2047-2412. ; 16 Suppl 1
-
Tidskriftsartikel (refereegranskat)
|
|
| 2. |
- Ferreira, Mjv, et al.
(författare)
-
Poster Session 3 : Tuesday 5 May 2015, 08
- 2015
-
Ingår i: European Heart Journal Cardiovascular Imaging. - : Oxford University Press (OUP). - 2047-2404 .- 2047-2412. ; 16 Suppl 1
-
Tidskriftsartikel (refereegranskat)
|
|
| 3. |
- Hudson, Lawrence N, et al.
(författare)
-
The database of the PREDICTS (Projecting Responses of Ecological Diversity In Changing Terrestrial Systems) project
- 2017
-
Ingår i: Ecology and Evolution. - : John Wiley & Sons. - 2045-7758. ; 7:1, s. 145-188
-
Tidskriftsartikel (refereegranskat)abstract
- The PREDICTS project-Projecting Responses of Ecological Diversity In Changing Terrestrial Systems (www.predicts.org.uk)-has collated from published studies a large, reasonably representative database of comparable samples of biodiversity from multiple sites that differ in the nature or intensity of human impacts relating to land use. We have used this evidence base to develop global and regional statistical models of how local biodiversity responds to these measures. We describe and make freely available this 2016 release of the database, containing more than 3.2 million records sampled at over 26,000 locations and representing over 47,000 species. We outline how the database can help in answering a range of questions in ecology and conservation biology. To our knowledge, this is the largest and most geographically and taxonomically representative database of spatial comparisons of biodiversity that has been collated to date; it will be useful to researchers and international efforts wishing to model and understand the global status of biodiversity.
|
|
| 4. |
- Broggio, D., et al.
(författare)
-
Child and adult thyroid monitoring after a reactor accident (CAThyMARA): Technical recommendations and remaining gaps
- 2019
-
Ingår i: Radiation Measurements. - : Elsevier BV. - 1350-4487. ; 128:Septemberg
-
Tidskriftsartikel (refereegranskat)abstract
- © 2019 Elsevier Ltd Following a severe nuclear reactor accident large amounts of radioactive iodine are released in the atmosphere. Health consequences estimation for the affected population is based on the dose assessment which can be derived from in vivo measurements. Since the uptake of radioactive iodine increases the thyroid cancer risk of children it is of particular interest to dispose of technical recommendations on thyroid monitoring, particularly for children. This paper summarizes recommendations that have been issued by a group of European radiation protection specialists during the CAThyMARA project. It covers technical aspects such as the choice of instruments, the calibration process, the measurement preparedness, the dose assessment and communication issues. This paper also discusses remaining gaps and serves as an introduction to other papers of this special issue.
|
|
| 5. |
- Ilinskaya, O. A., et al.
(författare)
-
Mechanically induced thermal breakdown in magnetic shuttle structures
- 2018
-
Ingår i: New Journal of Physics. - : IOP Publishing. - 1367-2630. ; 20
-
Tidskriftsartikel (refereegranskat)abstract
- A theory of a thermally induced single-electron 'shuttling' instability in a magnetic nano-mechanical device subject to an external magnetic field is presented in the Coulomb blockade regime of electron transport. The model magnetic shuttle device considered comprises a movable metallic grain suspended between two magnetic leads, which are kept at different temperatures and assumed to be fully spin-polarized with anti-parallel magnetizations. For a given temperature difference shuttling is found to occur for a region of external magnetic fields between a lower and an upper critical field strength, which separate the shuttling regime from normal small-amplitude 'vibronic' regimes. We find that (i) the upper critical magnetic field saturates to a constant value in the high temperature limit and that the shuttle instability domain expands with a decrease of the temperature; (ii) the lower critical magnetic field depends not only on the temperature-independent phenomenological friction coefficient used in the model but also on intrinsic friction (which vanishes in the high temperature limit) caused by magnetic exchange forces and electron tunneling between the quantum dot and the leads. The feasibility of using thermally driven magnetic shuttle systems to harvest thermal breakdown phenomena is discussed.
|
|
| 6. |
|
|
| 7. |
- André, Mats, et al.
(författare)
-
Lower hybrid waves at comet 67P/Churyumov-Gerasimenko
- 2017
-
Ingår i: Monthly notices of the Royal Astronomical Society. - : OXFORD UNIV PRESS. - 0035-8711 .- 1365-2966. ; 469, s. S29-S38
-
Tidskriftsartikel (refereegranskat)abstract
- We investigate the generation of waves in the lower hybrid frequency range by density gradients in the near plasma environment of comet 67P/Churyumov-Gerasimenko. When the plasma is dominated by water ions from the comet, a situation with magnetized electrons and unmagnetized ions is favourable for the generation of lower hybrid waves. These waves can transfer energy between ions and electrons and reshape the plasma environment of the comet. We consider cometocentric distances out to a few hundred km. We find that when the electron motion is not significantly interrupted by collisions with neutrals, large average gradients within tens of km of the comet, as well as often observed local large density gradients at larger distances, are often likely to be favourable for the generation of lower hybrid waves. Overall, we find that waves in the lower hybrid frequency range are likely to be common in the near plasma environment.
|
|
| 8. |
- Cherry, Zack, 1959-
(författare)
-
Aramaic Loanwords in Neo-Assyrian 900–600 B.C.
- 2017
-
Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- This study aimed at identifying and analyzing Aramaic loanwords in Neo-Assyrian for the period 900–600 B.C. As two Semitic languages, Neo-Assyrian and Aramaic are sibling-descendants of a postulated common ancestor, Proto-Semitic. The study provides information about the contact between the two languages and about the people who spoke them.To achieve the purpose of the study, a total of 9057 unique Neo-Assyrian texts of different genre are utilized. A total of 166 proposed Aramaic loanwords in Neo-Assyrian are included and discussed in the study. The evaluation of the proposed loanwords is conducted using phonological, morphological and semantic criteria.The findings of the study demonstrate that only 69 words are considered to be confirmed loanwords, and 50 are considered to be possible loanwords. Additionally, 47 words are rejected for different reasons and are not considered Aramaic loanwords in Neo-Assyrian. The majority of the confirmed loanwords are attested in letters and legal and administrative documents from the 7th century B.C., stemming from the major Assyrian cities of Nineveh, Assur and Calah. Most of the confirmed loanwords are nouns.The relatively small number of certain and possible Aramaic loanwords is undoubtedly an evidence for the use of Aramaic in Assyria proper. The same evidence, however, fails to support the impression that Aramaic was widely spread in Assyria proper as a vernacular language, especially towards the end of the period studied. The evidence also corroborates the conclusion based on the extant prosopographical data that the predominantly Assyrian character was maintained in Assyria proper until the very end of the Assyrian empire.
|
|
| 9. |
- Edberg, Niklas J. T., et al.
(författare)
-
CME impact on comet 67P/Churyumov-Gerasimenko
- 2016
-
Ingår i: Monthly notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966. ; 462, s. S45-S56
-
Tidskriftsartikel (refereegranskat)abstract
- We present Rosetta observations from comet 67P/Churyumov-Gerasimenko during the impact of a coronal mass ejection (CME). The CME impacted on 2015 Oct 5-6, when Rosetta was about 800 km from the comet nucleus, and 1.4 au from the Sun. Upon impact, the plasma environment is compressed to the level that solar wind ions, not seen a few days earlier when at 1500 km, now reach Rosetta. In response to the compression, the flux of suprathermal electrons increases by a factor of 5-10 and the background magnetic field strength increases by a factor of similar to 2.5. The plasma density increases by a factor of 10 and reaches 600 cm(-3), due to increased particle impact ionization, charge exchange and the adiabatic compression of the plasma environment. We also observe unprecedentedly large magnetic field spikes at 800 km, reaching above 200 nT, which are interpreted as magnetic flux ropes. We suggest that these could possibly be formed by magnetic reconnection processes in the coma as the magnetic field across the CME changes polarity, or as a consequence of strong shears causing Kelvin-Helmholtz instabilities in the plasma flow. Due to the limited orbit of Rosetta, we are not able to observe if a tail disconnection occurs during the CME impact, which could be expected based on previous remote observations of other CME-comet interactions.
|
|
| 10. |
- Edberg, Niklas J. T., et al.
(författare)
-
Spatial distribution of low-energy plasma around comet 67P/CG from Rosetta measurements
- 2015
-
Ingår i: Geophysical Research Letters. - 0094-8276 .- 1944-8007. ; 42:11, s. 4263-4269
-
Tidskriftsartikel (refereegranskat)abstract
- We use measurements from the Rosetta plasma consortium Langmuir probe and mutual impedance probe to study the spatial distribution of low-energy plasma in the near-nucleus coma of comet 67P/Churyumov-Gerasimenko. The spatial distribution is highly structured with the highest density in the summer hemisphere and above the region connecting the two main lobes of the comet, i.e., the neck region. There is a clear correlation with the neutral density and the plasma to neutral density ratio is found to be approximate to 1-210(-6), at a cometocentric distance of 10km and at 3.1AU from the Sun. A clear 6.2h modulation of the plasma is seen as the neck is exposed twice per rotation. The electron density of the collisionless plasma within 260km from the nucleus falls off with radial distance as approximate to 1/r. The spatial structure indicates that local ionization of neutral gas is the dominant source of low-energy plasma around the comet.
|
|
