| 1. |
- Allander, T, et al.
(författare)
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Human bocavirus and acute wheezing in children
- 2007
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Ingår i: Clinical infectious diseases : an official publication of the Infectious Diseases Society of America. - : Oxford University Press (OUP). - 1537-6591. ; 44:7, s. 904-910
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Tidskriftsartikel (refereegranskat)
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| 2. |
- Lozo, B, et al.
(författare)
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Nondestructive microscopic and spectroscopic mehtods for depth profiling of ink jet prints
- 2006
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Ingår i: Journal of Imaging Science and Technology. - 1062-3701 .- 1943-3522. ; 50:4, s. 333-340
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Tidskriftsartikel (refereegranskat)abstract
- The binding process of printing inks on the printing substrate is one of the final phases in the creative chain of a new product formation—the print. It is not only the expected mechanism of ink drying that influences the ink distribution on the substrate surface, but also the properties of the substrate itself. Many factors, like hydrophobicity, roughness, and porosity influence the ink distribution on both coated and uncoated papers. The aim of this study was to evaluate the applicability of several nondestructive methods in the analysis of vertical and radial ink distribution on diverse ink jet prints. What are the limits and the extent of confocal Raman, ultraviolet (UV) Raman, CLSM and Fourier-transform infrared (FTIR) PAS in the analysis of ink jet ink distribution in the z direction of the print? In the experiment, both dye- and pigment-based ink jet inks were printed on different types of coated and uncoated papers. The results show a correlation between the confocal Raman and CLSM methods for depth profiling. UV Raman proved useful in the surface analysis of prints while FTIR PAS was useful for measurements at low depth in the z direction. The applied microscopic and spectroscopic methods provide a precise distinction between the upper homogeneous and the inside nonhomogeneous ink layers. Sporadic streams of deeply penetrated ink jet ink were also detected.
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| 3. |
- Jääskeläinen, A-S, et al.
(författare)
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Application of UV-Vis and resonance Raman spectroscopy to study bleaching and photoyellowing of thermomechanical pulps
- 2006
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Ingår i: Holzforschung. - 0018-3830 .- 1437-434X. ; 60, s. 231-238
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Tidskriftsartikel (refereegranskat)abstract
- The chemistry of thermomechanical pulp bleaching and brightness reversion was studied. First, UV-Vis reflectance spectroscopy was used to obtain information on the reactive structures in pulp. Based on these data, a Raman excitation wavelength was chosen close to the absorption bands of the chromophores formed to take advantage of the resonance enhancement (resonance Raman spectroscopy). Fluorescence was rejected with a picosecond Kerr gate. The results revealed that coniferyl aldehyde structures were partly removed by alkaline peroxide bleaching and these structures were further degraded during light exposure. However, this reaction was obviously not responsible for chromophore formation in the pulp. On the other hand, based on the resonance Raman spectra, formation of quinonoid structures, possibly para-quinones, was a more prominent explanation for the brightness reversion
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| 4. |
- Lehtonen, K. K., et al.
(författare)
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The BEEP project in the Baltic Sea: Overview of results and outline for a regional biological effects monitoring strategy
- 2006
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Ingår i: Marine Pollution Bulletin. - : Elsevier BV. - 0025-326X. ; 53:8-9, s. 523-537
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Tidskriftsartikel (refereegranskat)abstract
- Field studies in the framework of the EU funded BEEP project (Biological Effects of Environmental Pollution in Marine Coastal Ecosystems, 2001-2004) aimed at validating and intercalibrating a battery of biomarkers of contaminant exposure and effects in selected indicator species in the Mediterranean, the North Atlantic and the Baltic Seas. Major strategic goals of the BEEP project were the development of a sensitive and cost-efficient biological effects monitoring approach, delivery of information and advice to end-user groups, and the implementation of a network of biomarker researchers around Europe. Based on the main results obtained in the Baltic Sea component of the BEEP the present paper summarises and assesses the applicability of biomarkers for different regions and species in this sea area. Moreover, a general strategy and some practical considerations for the monitoring of biological effects in the Baltic Sea are outlined. (c) 2006 Elsevier Ltd. All rights reserved.
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| 5. |
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