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- Stegmayr, Bernd, et al.
(författare)
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Distribution of indications and procedures within the framework of centers participating in the WAA apheresis registry
- 2017
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Ingår i: Transfusion and apheresis science. - : Elsevier BV. - 1473-0502 .- 1878-1683. ; 56:1, s. 71-74
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Tidskriftsartikel (refereegranskat)abstract
- The WAA apheresis registry was established in 2003 and an increasing number of centers have since then included their experience and data of their procedures. The registry now contains data of more than 74,000 apheresis procedures in more than 10,000 patients. This report shows that the indications for apheresis procedures are changing towards more oncological diagnoses and stem cell collections from patients and donors and less therapeutic apheresis procedures. In centers that continue to register, the total extent of apheresis procedures and patients treated have expanded during the latest years.
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| 5. |
- Bianchi, M., et al.
(författare)
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One-dimensional spin texture of Bi(441): Quantum spin Hall properties without a topological insulator
- 2015
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Ingår i: Physical Review B (Condensed Matter and Materials Physics). - 1098-0121. ; 91:16
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Tidskriftsartikel (refereegranskat)abstract
- The high index (441) surface of bismuth has been studied using scanning tunneling microscopy (STM), angle resolved photoemission spectroscopy (APRES), and spin-resolved ARPES. The surface is strongly corrugated, exposing a regular array of (110)-like terraces. Two surface localized states are observed, both of which are linearly dispersing in one in-plane direction (k(x)), and dispersionless in the orthogonal in-plane direction (k(y)), and both of which have a Dirac-like crossing at k(x) = 0. Spin ARPES reveals a strong in-plane polarization, consistent with Rashba-like spin-orbit coupling. One state has a strong out-of-plane spin component, which matches with the miscut angle, suggesting its possible origin as an edge state. The electronic structure of Bi(441) has significant similarities with topological insulator surface states and is expected to support one-dimensional quantum spin Hall-like coupled spin-charge transport properties with inhibited backscattering, without requiring a topological insulator bulk.
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| 6. |
- Sihavon, A, et al.
(författare)
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Health providers' competence in the management of reproductive tract infections in Vientiane, Lao People's Democratic Republic
- 2007
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Ingår i: International journal of STD & AIDS. - : SAGE Publications. - 0956-4624 .- 1758-1052. ; 18:11, s. 774-781
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Tidskriftsartikel (refereegranskat)abstract
- This cross-sectional study aimed to assess health providers' reported knowledge and practice competence regarding management of reproductive tract infections (RTIs) including sexually transmitted infections (STIs) in Vientiane, Laos. All 272 health providers (medical doctors/assistants, midwives/nurses and drug sellers) working with RTI/STI patients in one urban and one rural district were invited to fill in a self-completed questionnaire including four written simulated case scenarios, and 93% participated in the study. Of 252 respondents, 34% scored below 50% regarding both the case scenarios and reported knowledge, and 87% gave inadequate advice regarding health education. Only 34% gave correct advice on contact tracing, 38% on counselling, 52% regarding compliance and 59% on condom promotion. Drug sellers scored lowest in all aspects of RTI/STI management. Urban respondents were more likely to report adequate knowledge. Continuous training in syndromic approach and supervision are recommended to improve the quality of RTI/STI management, particularly at private pharmacies and in rural areas.
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- Ostadkarampour, M., et al.
(författare)
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Higher levels of interleukin IL-17 and antigen-specific IL-17 responses in pulmonary sarcoidosis patients with Lofgren's syndrome
- 2014
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Ingår i: Clinical and Experimental Immunology. - : Oxford University Press (OUP). - 0009-9104 .- 1365-2249. ; 178:2, s. 342-352
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Tidskriftsartikel (refereegranskat)abstract
- Sarcoidosis is a granulomatous disorder of unknown aetiology. The presence of Mycobacterium tuberculosis catalase-peroxidase (mKatG) in sarcoidosis tissue has been reported. T helper type 1 (Th1) responses against mKatG have previously been observed. However, little is known about interleukin (IL)-17 and Th17 responses in sarcoidosis. Here, we investigated the levels of IL-17 and frequencies of IL-17-producing cells responding to mKatG in sarcoidosis patients with different prognosis. Peripheral blood and bronchoalveolar lavage (BAL) cells were obtained from sarcoidosis patients with or without Lofgren's syndrome (often associated with spontaneous recovery), and also stratified according to human leucocyte antigen (HLA) type. Cells producing IL-17 and interferon (IFN)-gamma after stimulation with mKatG were enumerated by enzyme-linked immunospot (ELISPOT). The level of IL-17 in the BAL fluid of sarcoidosis patients and healthy controls was measured by quantitative immuno-polymerase chain reaction (qIPCR). We also performed flow cytometry and immunohistochemistry for further characterization of IL-17 expression. Patients with Lofgren's syndrome had a higher frequency of IL-17-producing cells responding to mKatG in BAL fluid compared to patients without Lofgren's syndrome (P < 0.05). The HLA-DR3(+) sarcoidosis patients with Lfgren's syndrome (known to have a particularly good prognosis) also had a clearly higher level of IL-17 in BAL fluid compared to healthy controls and sarcoidosis patients without Lofgren's syndrome (P < 0.01) and (P < 0.05), respectively. No such difference between patient groups was observed with regard to IFN-gamma and not with regard to either cytokine in peripheral blood. These findings suggest that IL-17-producing cells may be a useful biomarker for the prognosis of sarcoidosis and play a role in the spontaneous recovery typical of patients with Lfgren's syndrome.
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- Batani, D., et al.
(författare)
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Effects of laser prepulses on laser-induced proton generation
- 2010
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Ingår i: New Journal of Physics. - : IOP Publishing. - 1367-2630. ; 12
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Tidskriftsartikel (refereegranskat)abstract
- Low-intensity laser prepulses (<10(13) W cm(-2), nanosecond duration) are a major issue in experiments on laser-induced generation of protons, often limiting the performances of proton sources produced by high-intensity lasers (approximate to 10(19) W cm(-2), picosecond or femtosecond duration). Depending on the intensity regime, several effects may be associated with the prepulse, some of which are discussed in this paper: (i) destruction of thin foil targets by the shock generated by the laser prepulse; (ii) creation of preplasma on the target front side affecting laser absorption; (iii) deformation of the target rear side; and (iv) whole displacement of thin foil targets affecting the focusing condition. In particular, we show that under oblique high-intensity irradiation and for low prepulse intensities, the proton beam is directed away from the target normal. Deviation is towards the laser forward direction, with an angle that increases with the level and duration of the ASE pedestal. Also, for a given laser pulse, the beam deviation increases with proton energy. The observations are discussed in terms of target normal sheath acceleration, in combination with a laser-controllable shock wave locally deforming the target surface.
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| 28. |
- Boschker, J. E., et al.
(författare)
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In-plane structural order of domain engineered La0.7Sr0.3MnO3 thin films
- 2013
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Ingår i: Philosophical Magazine. - : Informa UK Limited. - 1478-6435 .- 1478-6443. ; 93:13, s. 1549-1562
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Tidskriftsartikel (refereegranskat)abstract
- We present a detailed structural study of tensile-strained La0.7Sr0.3MnO3 thin films. We use the substrate miscut to control the number of rhombohedral variants in the films and study the in-plane order and structural distortions. Using high-resolution X-ray diffraction, we demonstrate that step-edge induced lattice modulations occur in 4-variant films, whereas periodic twinning is the dominant in-plane order for 2-variant films. We show that the in-plane twinning angle is almost completely relaxed. However, the relaxation of shear strain by the out-of-plane twinning angle and the monoclinic distortion is only partial. Furthermore, the film thickness dependence of the domain width reveals that domain formation is a universal mechanism for shear strain relaxation. Finally, we show that the structural response to the transition from the paramagnetic to the ferromagnetic phase of La0.7Sr0.3MnO3 at 345K is smaller in 4-variant films compared to 2-variant films.
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| 29. |
- Cacciani, P., et al.
(författare)
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Lifetime measurements of the e1II, v = 0 and v = 1 states of12C16O, 13C16O, and13C18O
- 1998
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Ingår i: Astrophysical Journal. - 0004-637X. ; 499:2 PART II, s. 223-226
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Tidskriftsartikel (refereegranskat)abstract
- In a laboratory investigation using tunable picosecond lasers in a pump-probe configuration, lifetimes of the E 1u, v = 0 and v = 1 states of CO are experimentally determined. For E 'D, v = 1, the lifetime is found to vary significantly for the isotopomers. Combining the data with existing oscillator strengths, predissociation probabilities within the range of 93.6%-98.6% result for 12C16O, 13C16O, and 13C18O in the case of the E 1u, v = I state, which is the state that predominantly influences the isotopic fractionation of CO in interstellar clouds.
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| 31. |
- Cooil, S. P., et al.
(författare)
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Iron-mediated growth of epitaxial graphene on SiC and diamond
- 2012
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Ingår i: Carbon. - : Elsevier BV. - 0008-6223. ; 50:14, s. 5099-5105
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Tidskriftsartikel (refereegranskat)abstract
- Ordered graphene films have been fabricated on Fe-treated SiC and diamond surfaces using the catalytic conversion of sp(3) to sp(2) carbon. In comparison with the bare SiC(0 0 0 1) surface, the graphitization temperature is reduced from over 1000 degrees C to 600 degrees C and for diamond (111), this new approach enables epitaxial graphene to be grown on this surface for the first time. For both substrates, a key development is the in situ monitoring of the entire fabrication process using real-time electron spectroscopy that provides the necessary precision for the production of films of controlled thickness. The quality of the graphene/graphite layers has been verified using angle-resolved photoelectron spectroscopy, scanning tunneling microscopy and low energy electron diffraction. Graphene is only formed on treated regions of the surface and so this offers a method for fabricating and patterning graphene structures on SiC and diamond in the solid-state at industrially realistic temperatures. (c) 2012 Elsevier Ltd. All rights reserved.
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| 32. |
- Ekvall, I, et al.
(författare)
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Preparation and characterization of electrochemically etched W tips for STM
- 1999
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Ingår i: MEASUREMENT SCIENCE & TECHNOLOGY. - : IOP PUBLISHING LTD. - 0957-0233. ; 10:1, s. 11-18
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- We have investigated methods for cleaning de-etched polycrystalline tungsten tips for scanning tunnelling microscopy (STM). The cleaning methods include Ar-ion sputtering, heating, chemical treatments and Ne-ion self-sputtering. We correlate transmission
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| 33. |
- ElSayed, A, et al.
(författare)
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Distribution of the energy release, b-values and seismic hazard in Egypt
- 1996
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Ingår i: NATURAL HAZARDS. - : KLUWER ACADEMIC PUBL. - 0921-030X. ; 13:2, s. 133-150
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- A review of the seismicity and seismic history of Egypt indicates areas of high activity concentrated along Oligocene-Miocene faults. This supports the idea of recent activation of the Oligocene-Miocene stress cycle. There are similarities in the spatial
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| 34. |
- ELSAYED, A, et al.
(författare)
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SEISMIC HAZARD OF EGYPT
- 1994
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Ingår i: NATURAL HAZARDS. - : KLUWER ACADEMIC PUBL. - 0921-030X. ; 10:3, s. 247-259
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Earthquake hazard parameters such as maximum expected magnitude, M(max), annual activity rate, lambda, and b value of the Gutenberg-Richter relation have been evaluated for two regions of Egypt. The applied maximum likelihood method permits the combinatio
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| 36. |
- Ferri, Julien, 1990, et al.
(författare)
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Enhancement of laser-driven ion acceleration in non-periodic nanostructured targets
- 2020
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Ingår i: Journal of Plasma Physics. - 0022-3778 .- 1469-7807. ; 86:1
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Tidskriftsartikel (refereegranskat)abstract
- Using particle-in-cell simulations, we demonstrate an improvement of the target-normal-sheath acceleration (TNSA) of protons in non-periodically nanostructured targets with micron-scale thickness. Compared to standard flat foils, an increase in the proton cutoff energy by up to a factor of two is observed in foils coated with nanocones or perforated with nanoholes. The latter nano-perforated foils yield the highest enhancement, which we show to be robust over a broad range of foil thicknesses and hole diameters. The improvement of TNSA performance results from more efficient hot-electron generation, caused by a more complex laser-electron interaction geometry and increased effective interaction area and duration. We show that TNSA is optimized for a nanohole distribution of relatively low areal density and that is not required to be periodic, thus relaxing the manufacturing constraints.
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