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| 2. |
- Fortov, V., et al.
(författare)
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The project 'Plasmakristall-4' (PK-4) - a new stage in investigations of dusty plasmas under microgravity conditions : first results and future plans
- 2005
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Ingår i: Plasma Physics and Controlled Fusion. - 0741-3335 .- 1361-6587. ; 47, s. B537-B549
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Tidskriftsartikel (refereegranskat)abstract
- The PK-4 experiment is a continuation of the successful dusty plasma experiments PK-1, PK-2 and PK-3 conducted on board of the orbital space stations Mir and International Space Station. For all these experiments it is important to avoid the strong influence of gravity, exerting an external stress on the system. Whereas PK-3 and PK-3 Plus experiments are using a planar rf capacitive discharge, PK-4 studies complex plasmas in a long cylindrical chamber with a combined dc/rf discharge. Such a configuration of the chamber will provide a particular advantage for investigation of different dynamical phenomena in complex plasmas such as sheared laminar flow of a highly nonideal dusty liquid and its transition to the turbulent regime, nozzle flow, boundary layers and instabilities, shock waves (solitons) formation and propagation, dust particle lane formation, and space dust grain separation according to their size.
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| 3. |
- Thoma, Markus H., et al.
(författare)
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PK-4 : Complex plasmas in space - The next generation
- 2007
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Ingår i: IEEE Transactions on Plasma Science. - 0093-3813 .- 1939-9375. ; 35:2, s. 255-259
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Tidskriftsartikel (refereegranskat)abstract
- PK-4 is an experiment designed to investigate complex plasmas in a combined dc/RF discharge under microgravity conditions on board of the International Space Station. The dc,discharge is produced in a glass tube with a length of 35 cm and, a diameter of 3 cm. In addition, an RF discharge can be applied by external RF coils. The setup is especially suited for studying the liquid phase of the complex plasmas, e.g., flow phenomena such as turbulence or nozzles, and forces acting on the microparticles. Experiments in the laboratory and in parabolic flights have been used to determine the charge of the microparticles as well as the ion drag force acting on them.
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| 4. |
- Sanchez-Barriga, J., et al.
(författare)
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Strength of Correlation Effects in the Electronic Structure of Iron
- 2009
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Ingår i: Physical Review Letters. - 0031-9007 .- 1079-7114. ; 103:26, s. 267203-
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Tidskriftsartikel (refereegranskat)abstract
- The strength of electronic correlation effects in the spin-dependent electronic structure of ferromagnetic bcc Fe(110) has been investigated by means of spin and angle-resolved photoemission spectroscopy. The experimental results are compared to theoretical calculations within the three-body scattering approximation and within the dynamical mean-field theory, together with one-step model calculations of the photoemission process. This comparison indicates that the present state of the art many-body calculations, although improving the description of correlation effects in Fe, give too small mass renormalizations and scattering rates thus demanding more refined many-body theories including nonlocal fluctuations.
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| 6. |
- Johnatty, S. E., et al.
(författare)
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No evidence that GATA3 rs570613 SNP modifies breast cancer risk
- 2009
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Ingår i: Breast Cancer Research and Treatment. - : Springer. - 0167-6806 .- 1573-7217. ; 117:2, s. 371-379
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Tidskriftsartikel (refereegranskat)abstract
- GATA-binding protein 3 (GATA3) is a transcription factor that is crucial to mammary gland morphogenesis and differentiation of progenitor cells, and has been suggested to have a tumor suppressor function. The rs570613 single nucleotide polymorphism (SNP) in intron 4 of GATA3 was previously found to be associated with a reduction in breast cancer risk in the Cancer Genetic Markers of Susceptibility project and in pooled analysis of two case-control studies from Norway and Poland (P trend = 0.004), with some evidence for a stronger association with estrogen receptor (ER) negative tumours [Garcia-Closas M et al. (2007) Cancer Epidemiol Biomarkers Prev 16:2269-2275]. We genotyped GATA3 rs570613 in 6,388 cases and 4,995 controls from the Breast Cancer Association Consortium (BCAC) and 5,617 BRCA1 and BRCA2 carriers from the Consortium of Investigators of Modifiers of BRCA1/2 (CIMBA). We found no association between this SNP and breast cancer risk in BCAC cases overall (ORper-allele = 1.00, 95% CI 0.94-1.05), in ER negative BCAC cases (ORper-allele = 1.02, 95% CI 0.91-1.13), in BRCA1 mutation carriers RRper-allele = 0.99, 95% CI 0.90-1.09) or BRCA2 mutation carriers (RRper-allele = 0.93, 95% CI 0.80-1.07). We conclude that there is no evidence that either GATA3 rs570613, or any variant in strong linkage disequilibrium with it, is associated with breast cancer risk in women.
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