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| 2. |
- Carlsson, CMG, et al.
(författare)
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Improved wettability of chemithermomechanical pulp by oxygen plasma treatment
- 1994
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Ingår i: Nordic Pulp & Paper Research Journal. - 0283-2631 .- 2000-0669. ; 9, s. 72-75,83
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Tidskriftsartikel (refereegranskat)abstract
- Chemithermomechanical pulp has been treated by cold plasma of oxygen, nitrogen, argon or air. The wettability increases as a result of treatment by oxygen or air plasmas but decreases when argon or nitrogen plasmas are used. The initial water absorption rate can be improved by more than 100 % using an oxygen plasma. After subsequent ageing of the pulp the improvement was ca 200 %. Electron Spectroscopy for Chemical Analysis (ESCA) shows that the oxygen plasma treatment increases the oxygen content of the fibre surfaces due to oxidation and/or removal of fatty acids, resin acids, and probably also lignin. The amount of extractable material increases after the plasma treatment, probably due to oxidation and scission of the lignin and the carbohydrates. This oxidized low molecular weight material may act as a surfactant decreasing the surface tension of the absorbing liquid and thus enhance the absorption rate.
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| 3. |
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| 4. |
- Karlsson, Kristian, et al.
(författare)
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Distance Dependent Radiation Patterns in Vehcile-to-Vehicle Communications
- 2015
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Rapport (refereegranskat)abstract
- We present a method for repeatable measurements of antennas integrated on vehicles in vehicle-to-vehicle communications. The method can handle vehicles and heavy vehicles and results in distance dependent radiation pattern measurements, or near-field coverage measurements. The method is exemplified with measurement results. Key words: Channel models, radiation pattern, vehicles, V2V, measurement
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| 5. |
- Lidén, E, et al.
(författare)
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Surface modification and dispersion of silicon nitride and silicon carbide powders
- 1991
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Ingår i: Journal of the European Ceramic Society. - 0955-2219 .- 1873-619X. ; 7, s. 361-368
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Tidskriftsartikel (refereegranskat)abstract
- A surface modification technique using controlled hydrolysis and polymerization of Al-alkoxide is oresented. It was found by measuring the electrokinetic behaviour and the adsorption properties that a minimum amount of about 0.5 mg Al/m2 was necessary to give SiC and Si3N4 in cyclohexane using a commercial dispersant with an acidic headgroup.
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| 6. |
- Lusk, E., et al.
(författare)
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The Aurora or-parallel Prolog system
- 1990. - 2
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Ingår i: New generation computing. - : ICOT, Tokyo, Japan. - 0288-3635 .- 1882-7055. ; 7:2,3, s. 243-271
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Tidskriftsartikel (refereegranskat)
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| 7. |
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| 8. |
- Skoglund, E., et al.
(författare)
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Analysis of Inositol Mono- and Diphosphate Isomers Using High-Performance Ion Chromatography and Pulsed Amperometric Detection
- 1997
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Ingår i: Journal of Agricultural and Food Chemistry. - 0021-8561 .- 1520-5118. ; 45:12, s. 4668-4673
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Tidskriftsartikel (refereegranskat)abstract
- A rapid and sensitive high-performance ion chromatography method for separation and quantitative determination of inositol mono- and diphosphate (IP 1-IP 2) isomers using pulsed amperometric detection is described. The method involves extraction of samples with HCl, separation of inositol phosphates from the crude extract by anion-exchange chromatography, NaAc gradient elution in an NaOH environment to perform isomer separation on a high-performance anion-exchange column, and detection with pulsed amperometric detector. The applicability and sensitivity of the method is illustrated by measurement of the content of IP 1 and IP 2 in foods, human ileal contents, and enzymatic hydrolysis products of phytate (inositol hexaphosphate). The major IP 1 and IP 2 isomers formed during phytate hydrolysis with wheat phytase were shown to be Ins(2)P, DL-Ins(1)P, and DL-Ins(1,2)P 2 and with Aspergillus niger phytase, Ins(2)P and DL-Ins(1,2)P 2.
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| 10. |
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