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  • 251.
    Andersson, A
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SIK – Institutet för livsmedel och bioteknik.
    Bacillus cereus : adhesion ability to biological and non-biological surfaces, enterotoxins, characterization1998Report (Refereed)
  • 252.
    Andersson, A
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SIK – Institutet för livsmedelsforskning.
    Bacillus cereus, strategy for survival : a litterature review1995Report (Refereed)
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  • 253.
    Andersson, Anders
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Volym, flöde, temperatur o densitet.
    Bäst mäta utan fel2006In: Process Nordic, no 11Article in journal (Other academic)
  • 254.
    Andersson, Anders
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Volym, flöde, temperatur o densitet.
    Dosin - A new Pump Device. Its Construction and Function.2007In: Uppsala Journal of Medical Science, Vol. 112, no 1, p. 83-93Article in journal (Other academic)
    Abstract [en]

    ABSTRACT The research and development of the Dosin® and the medical injection system in which it is used was initiated in response to a demand for a new and improved method of delivering fluids to patients. The key requirement was to make the use of refillable syringes obsolete in a cost- effective and user-friendly alternative. Most syringes, despite their accurate delivery quotas, have a limited volume that necessitates frequent monitoring and filling or changing. This very act is time consuming and potentially dangerous in inexperienced hands. The new principle of the device makes it capable of delivering (medical) fluids of various consistencies in extremely precise amounts regardless of the fluid viscosity. The outlet of the Dosin® goes through another innovation, the bubble detector, which detects any change in direction of a light beam that passes through the content of the outlet. Thus, should an air bubble enter the outflow and hence be about to enter the blood stream of a patient, the flow of fluid will halt immediately and an alarm will notify the user of the problem.The cyclic flow is useful in interventional radiology since it prevents clotting and increases the mixing with the blood. The flow rate varies from 0.03 mL/s to 5 mL/s and it is recommended to use fluid with a viscosity lower than 3 mPa.s. The outlet pressure is recommended below 300 mm Hg. The Dosin® must be replaced after each patient, alternatively after maximum 24h continuous use.

  • 255.
    Andersson, Anders
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Volym, flöde, temperatur o densitet.
    Gastrointestinal Radiological Investigations with a New Pump Device: Experimental and Clinical Experiences2008In: Ups J Med Sci., Vol. 113, no 1, p. 73-8Article in journal (Other academic)
    Abstract [en]

    In an earlier paper (1) a new pump device for medical applications was described. This enabled a continuous flow of saline, barium contrast agent and gases. We now report further study of this device: The use of gases was experimentally studied to give a basis for use in CT-colonography. We also report experiences from injection of barium contrast agent via a naso-duodenal tube for radiological investigation of the small intestine in patients with gastrointestinal suffering. The radiation exposure to the x-ray staff was reduced. The investigation procedure was standardised and shortened.

  • 256.
    Andersson, Anders
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Volym, flöde, temperatur o densitet.
    Inventory and basic evaluation of field calibration methods for volume and flow meters Nordtest 1590-022004Report (Refereed)
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    FULLTEXT01
  • 257.
    Andersson, Anders
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Volym, flöde, temperatur o densitet.
    Viktigt att välja rätt FLÖDESMÄTARE2008In: Energi & miljö, no 11, p. 90-Article in journal (Other (popular science, discussion, etc.))
  • 258.
    Andersson, Anders
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Volym, flöde, temperatur o densitet.
    Holmsten, Magnus
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Volym, flöde, temperatur o densitet.
    Lau, Peter
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Volym, flöde, temperatur o densitet.
    VVS 2000 Tabeller & Diagram2004In: Handbok i Mätteknik, 2004, p. 64-Chapter in book (Other (popular science, discussion, etc.))
  • 259.
    Andersson, Anders
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Volym, flöde, temperatur o densitet.
    Mattiasson, Kerstin
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Volym, flöde, temperatur o densitet.
    Holmsten, Magnus
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Volym, flöde, temperatur o densitet.
    Lidbeck, Mats
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Volym, flöde, temperatur o densitet.
    Jonasson, Viktoria
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Massa, kraft, längd och tryck.
    Magnusson, Bertil
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Oorganisk kemi (Kmoo).
    Mätteknik för processindustrin2010Report (Refereed)
    Abstract [sv]

    En lärobok (främst riktad till yrkeshögskolan) om hur man undviker mätfel, om olika mätprinciper och om hur mätutrustning av olika slag bäst används och monteras. Främst handlar det om temperatur, tryck, flöde och nivå men även annat som finns i en processindustri.

  • 260.
    Andersson, Anne
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Kommunikation.
    High Power Fibre Optic Calibration. Nordtest project 1654-032004Report (Refereed)
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  • 261.
    Andersson, Anne
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Kommunikation.
    Källberg, Stefan
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Kommunikation.
    Intercomparison of transmittance measurements on V(λ) filter. EUROMET PROJECT 3532004Report (Refereed)
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    FULLTEXT01
  • 262.
    Andersson, Anne
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Kommunikation.
    Svensson, Ingemar
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Kommunikation.
    Camera-based Colour Contrast Evaluation2012Report (Refereed)
    Abstract [en]

    This project studies whether or not a digital camera can be used to evaluate colour difference or colour contrast. When characterizing a test object that changes colour over time it is not always possible to do a normal colour measurement with a spectroradiometer. The alternative could be to use film or rapid fire photography to record the changes and extract the colour data from the digital information. This project involves development of a method where spectroradiometric data of a colour chart is compared to digital data taken from photos and film of the same colour chart using Photoshop. In each measurement 22 colours have been evaluated by calculating the colour difference between a direct spectroradiometric measurement of a single colour and data taken from Photoshop of that same colour. The data is compared in the CIELAB colour space using the ?E94 metric which should faithfully represent how the human eye perceives colour difference. Three sets of measurements are made .Two sets where the spectroradiometric data is compared to data from still photos, first with photos directly from the camera and then with RAW-data from the camera. The third measurement compared the spectroradiometric data with data from a frame from a video. The results show that the 22 colours are reproduced with varying degrees of accuracy in photos and video compared to a direct measurement using a spectroradiometer. For the two photo measurements the results span from ?E94 = 0.82 for the best colour reproduction to ?E94 = 17.01 for the worst reproduction. The average deviation was ?E94 = 7.48 and ?E94 = 8.46 respectively where a colour difference of ?E94 =1.0 is considered a just noticeable difference. For video the deviation spans from ?E94 = 4.89 to ?E94 = 18.11 with an average deviation of ?E94 = 11.59. ?E94 has also been used to evaluate how the colour contrast between two different colours differ between the spectroradiometric measurement and data from Photoshop. The results show that for photos the colour contrast deviates quite a bit between the two methods. A deeper evaluation of the video method shows that as long as the contrast between two colours is small the deviation compared to the spectroradiometric measurement will also be small.

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    FULLTEXT01
  • 263.
    Andersson, Annika
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SIK – Institutet för livsmedel och bioteknik.
    Granum, P.E.
    Rönner, Ulf
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SIK – Institutet för livsmedel och bioteknik.
    The adhesion of Bacillus cereus spores to epithelial cells might be an additional virulence mechanism1998In: International Journal of Food Microbiology, ISSN 0168-1605, E-ISSN 1879-3460, Vol. 39, no 42006, p. 93-99Article in journal (Refereed)
    Abstract [en]

    Four out of ten Bacillus cereus strains produced spores able to adhere to monolayers of Caco-2 cells (human epithelial cells). One of these strains has been involved in an outbreak of food poisoning where the symptoms were more severe and persisted for longer than a normal B. cereus food poisoning. The hydrophobicity of the spores is a contributing factor for the adhesion to occur. The spores are able to germinate in an environment similar to that of the small intestine and then the vegetative cells can produce the enterotoxin directly at the target place. A concentrated and active form of the enterotoxin will be taken up by the epithelial cells in the small intestine. Spore adhesion could be an important virulence factor for some B. cereus strains.

  • 264.
    Andersson, Annika
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SIK – Institutet för livsmedel och bioteknik.
    Granum, Per Einar
    Rönner, Ulf
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SIK – Institutet för livsmedel och bioteknik.
    Adhesion of Bacillus cereus spores to epithelial cells might be an additional virulence mechanism1998In: International Joural of food microbiology, ISSN 0346-718X, Vol. 39, no 1-2, p. 93-9Article in journal (Refereed)
    Abstract [en]

    Four out of ten Bacillus cereus strains produced spores able to adhere to monolayers of Caco-2 cells (human epithelial cells). One of these strains has been involved in an outbreak of food poisoning where the symptoms were more severe and persisted for longer than a normal B. cereus food poisoning. The hydrophobicity of the spores is a contributing factor for the adhesion to occur. The spores are able to germinate in an environment similar to that of the small intestine and then the vegetative cells can produce the enterotoxin directly at the target place. A concentrated and active form of the enterotoxin will be taken up by the epithelial cells in the small intestine. Spore adhesion could be an important virulence factor for some B. cereus strains.

  • 265.
    Andersson, Annika
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SIK – Institutet för livsmedel och bioteknik.
    Rönner, Ulf
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SIK – Institutet för livsmedel och bioteknik.
    Adhesion and removal of dormant, heat-activated, and germinated spores of three strains of Bacillus cereus1998In: Biofouling (Print), ISSN 0892-7014, E-ISSN 1029-2454, Vol. 13, no 1, p. 51-67Article in journal (Refereed)
    Abstract [en]

    As the spores of Bacillus cereus are known to be very adhesive, the cleaning processes used to eliminate them are often inefficient. This study investigated how adhesion and removal of spores varied among strains of the species B. cereus. The adhesion and removal of spores during their life cycle were also examined. Spores of three different strains of B. cereus, viz. NVH 61, 1AM 1110 and NCTC 2599, were used. IAM 1110 spores adhered in greater numbers than spores of the other two strains and were the most hydrophobic; four times as many spores of this strain adhered than of the least adhesive spores, NCTC 2599. Spores of both these strains have an exosporium and appendages, but as the relative hydrophobicity varies, there are probably differences in their chemical composition. It was also found that dormant spores were 33-48% more adhesive than germinated spores. There were no obvious differences in adhesion between dormant and heat-activated spores. Up to 80% of the germinated spores could be removed from the surfaces tested. Dormant and heat-activated spores on the other hand were difficult to remove from the surfaces. When siliconized glass surfaces were coated with milk, germinated spores were still the easiest to remove but the difference was not as marked as before. Therefore, this work suggests that cleaning processes should take into consideration factors that boost spore germination in order to improve the cleaning.

  • 266.
    Andersson, Annika
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SIK – Institutet för livsmedelsforskning.
    Rönner, Ulf
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SIK – Institutet för livsmedelsforskning.
    Granum, P.E.
    What problems does the food industry have with the spore-forming pathogens Bacillus cereus and Clostridium perfringens?1995In: International Journal of Food Microbiology, ISSN 0168-1605, E-ISSN 1879-3460, Vol. 28, no 2, p. 145-155Article in journal (Refereed)
  • 267.
    Andersson, Annika
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SIK – Institutet för livsmedel och bioteknik.
    Rönner, Ulf
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SIK – Institutet för livsmedel och bioteknik.
    Granum, Per Einar
    What problems does the food industry have with the spore-forming pathogens Bacillus cereus and Clostridium perfringens?1995In: International Journal of Food Microbiology, ISSN 0346-718X, Vol. 28, no 2, p. 14-55Article in journal (Refereed)
    Abstract [en]

    Spore-forming Bacillus cereus and Clostridium perfringens bacteria are special problems for the dairy and meat industry, respectively. Proper cleaning and disinfection with hypochlorite is essential to avoid high numbers of these bacteria in food products. It is impossible for B. cereus and C. perfringens to cause food poisoning with cooking and rapid cooling, and proper reheating. It is also important to note that the generation time for C. perfringens can be as short as 8 min under optimal conditions, so temperatures between 10 and 47 °C in any meat product must be restricted. B. cereus food poisoning through milk and milk products can be avoided with a low number of spores in the products and proper cooling.

  • 268.
    Andersson, Annika
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SIK – Institutet för livsmedel och bioteknik.
    Svensson, B.
    Christiansson, A.
    Rönner, Ulf
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SIK – Institutet för livsmedel och bioteknik.
    Comparison between automatic ribotyping and random amplified polymorphic DNA analysis of Bacillus cereus isolates from the dairy industry1999In: International Journal of Food Microbiology, ISSN 0168-1605, E-ISSN 1879-3460, Vol. 47, no 42006, p. 147-151Article in journal (Refereed)
    Abstract [en]

    Discrimination by automatic ribotyping and random amplified polymorphic DNA PCR, RAPD, was compared for 40 different B. cereus dairy isolates, 4 different B. mycoides isolates and 6 culture collection strains. RAPD-PCR has previously shown to be useful for tracing contamination routes of B. cereus to milk. Automatic ribotyping using EcoRI and PvuII separated the B. cereus and B. mycoides isolates/strains into 36 different ribotypes. RAPD-typing with primers generated 40 different RAPD-profiles. However, 17 isolates clustered into eight groups, irrespective of the primer and restriction enzyme used, and in all but one case, the isolates with the same pattern were isolated from the same dairy. Automatic ribotyping proved to be a useful, standardized and quick method to discriminate between B. cereus strains, only slightly less discriminatory than RAPD-typing.

  • 269.
    Andersson, Annika
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SIK – Institutet för livsmedel och bioteknik.
    Svensson, Birgitta
    Christiansson, Anders
    Rönner, Ulf
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SIK – Institutet för livsmedel och bioteknik.
    Comparison between automatic ribotyping and random amplified polymorphic DNA analysis of Bacillus cereus isolates from the dairy industry1998In: International journal of food microbiology, ISSN 0346-718X, Vol. 47, no 1-2, p. 147-51Article in journal (Refereed)
    Abstract [en]

    Discrimination by automatic ribotyping and random amplified polymorphic DNA PCR, RAPD, was compared for 40 different B. cereus dairy isolates, 4 different B. mycoides isolates and 6 culture collection strains. RAPD-PCR has previously shown to be useful for tracing contamination routes of B. cereus to milk. Automatic ribotyping using EcoRI and PvuII separated the B. cereus and B. mycoides isolates/strains into 36 different ribotypes. RAPD-typing with primer 1 (5?-CCGAGTCCA-3?) and primer 2 (5?-CCGGCGGCG-3?) generated 40 different RAPD-profiles. However, 17 isolates clustered into 8 groups, irrespective of the primer and restriction enzyme used and in all but one case, the isolates with the same pattern were isolated from the same dairy. To conclude RAPD-typing was only slightly more discriminatory than automatic ribotyping and therefore automatic ribotyping proved to be a useful, standardized and quick method to discriminate between B. cereus strains. As the two methods are based on completely different genetic properties, one of the methods can be used to confirm the results from the other method, when identity among isolates needs to be verified.

  • 270.
    Andersson, Bengt Olof
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut.
    Early, Murray D.
    Measurement Standards Laboratory of New Zealand, New Zealand.
    Eklund, Gunnar
    RISE, SP – Sveriges Tekniska Forskningsinstitut.
    Gunnarsson, Ove
    RISE, SP – Sveriges Tekniska Forskningsinstitut.
    Rydler, Karl-Erik
    RISE, SP – Sveriges Tekniska Forskningsinstitut.
    The reference step method for DC voltage at 1 mV and 10 mV2014In: CPEM Digest (Conference on Precision Electromagnetic Measurements), Institute of Electrical and Electronics Engineers Inc. , 2014, p. 520-521, article id 6898488Conference paper (Refereed)
    Abstract [en]

    We have investigated the performance of a method called the Reference Step Method at low voltage levels. The method has been evaluated earlier at voltage levels from 0.1 V to 1 kV with excellent results. The advantages of this method are that it uses commonly available equipment and can be fully automated. We have made comparisons with three other low-voltage methods and the differences show that the uncertainties can be less than 30 μV/V at 1 mV and 3 μV/V at 10 mV, making it possible to use this method to perform automated calibration of calibrators with sufficient accuracy for calibration of high-end instruments.

  • 271.
    Andersson, Bengt-Åke
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik.
    Klämberg, Patrik
    Bestämning av fotodetektor responsivitet i mikrovågsområdet.2001Report (Refereed)
  • 272. Andersson, Berit
    et al.
    Blomqvist, Per
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP Sveriges tekniska forskningsinstitut / Brandteknik, forskning (BRf ).
    Dederich, Anne
    Thermal breakdown of extinguishing agents2008Report (Refereed)
  • 273. Andersson, Berit
    et al.
    Blomqvist, Per
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP Sveriges tekniska forskningsinstitut / Brandteknik, forskning (BRf ).
    Holmstedt, Göran
    Experimental study of thermal breakdown products from halogenated extinguishing agents2011In: Fire safety journal, ISSN 0379-7112, E-ISSN 1873-7226, Vol. 46, no 3, p. 104-115Article in journal (Refereed)
  • 274.
    Andersson, Bo-Lennart
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Material och ytteknik.
    Klassificering av atmosfärisk korrosivitet med hjälp av referenskuponger av olika metaller. Rekommenderade rutiner.1999Report (Refereed)
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  • 275.
    Andersson, Bo-Lennart
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Material och ytteknik.
    Carlsson, Bo
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Material och ytteknik.
    Insamling av miljödata vid Statens Provningsanstalt i Borås.1989Report (Refereed)
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    fulltext
  • 276.
    Andersson, Bo-Lennart
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Material och ytteknik.
    Carlsson, Bo
    Korrosionsskyddsklassning av organiska ytbeläggningar2000Report (Refereed)
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    fulltext
  • 277.
    Andersson, Britt-Inger
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek..
    Forskning om trä och miljö i de nordiska länderna. Nordiskt träprogram "Ny teknik i träindustrin" - förstudien "Trä och miljö" 92/931993Report (Other academic)
    Abstract [sv]

    Här presenterar vi vilka nordiska institut, organisationer, högskolor m fl som är verksamma inom området trä och miljö. En inventering av nordisk litteratur inom området finns också, liksom ett visst urval av för området intressant utländsk litteratur. Den kartläggning som vi har gjort visar bl a att det finns ett stort behov av att systematiskt arbeta med miljöfrågor inom den nordiska träindustrin, särskilt om industrin vill öka sin konkurrenskraft på miljökunniga marknader, t ex EU.

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    FULLTEXT01
  • 278.
    Andersson, Britt-Inger
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek..
    Fuktsäkring av krypgrunder1991Report (Other academic)
    Abstract [sv]

    Hur fuktsäkrar man moderna uteluftventilerade krypgrunder med träbjälklag? Jo, genom värmeisolering på marken eller på blindbottnens undersida mot kryprummet alternativt genom ventilation kombinerad med uppvärmning eller avfuktning i kryprummet. Avsikten med de gjorda teoretiska studierna och fältstudierna är att utveckla fuktsäkrare uteluftventilerade krypgrunder med trä och träbaserade material i bottenbjälklaget samt att finna sätt att förstärka en krypgrunds fuktskydd och därmed dess motståndsförmåga mot biologiska angrepp.

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  • 279.
    Andersson, Britt-Inger
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek..
    Miljö- och energidatabas för träindustrin - etapp 11996Report (Other academic)
    Abstract [sv]

    Slutrapport från ett projekt med målet att utarbeta en träindustriell databas där miljö- och energidata kan lagras och användas för miljödeklarationer, miljövärdering med livscykelanalys och utveckling av miljöanpassade produkter. Rapporten beskriver pilotstudier inom skogsbruk och sågverk samt lämplig databasstruktur och behov av fortsatt arbete.

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  • 280.
    Andersson, Britt-Inger
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek..
    Selection of building materials for healthy buildings with special reference to wood products1994Report (Other academic)
    Abstract [sv]

    Materialvalsprocessen i samband med projektering och byggande har förändrats så att andra egenskaper hos byggnadsmaterialen än de rent tekniska har fått ökad tyngd. Förändringen, som fortfarande pågår, innebär framför allt att en större uppmärksamhet ges åt materialens miljöpåverkan, både gällande yttre miljö och inomhusmiljö. Intresset ökar för materialens eventuella inverkan på människors hälsa, och speciellt för deras avgivning till luften av flyktiga organiska ämnen.

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  • 281.
    Andersson, Britt-Inger
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek..
    Timber-frame houses especially for allergic families1994Report (Other academic)
    Abstract [sv]

    En strategi för allergikeranpassade trähus har utarbetats inom f d LB-Investkoncernen. I en pilotstudie utvärderades sex trähus med avseende på materialval, byggnadsteknik och inomhusmiljöns kvalitet. Sammanfattningsvis visar studien på ett intressant koncept för familjer med personer som har allergiska besvär m m. Inom utvecklingsprojektet har ett helhetsgrepp tagits på såväl projektering (materialval, byggnadsteknik m m) som brukande (ventilation, städbarhet, underhåll m m).

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  • 282.
    Andersson, C
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SIK – Institutet för livsmedelsforskning.
    Ultraljudsrengöring av ytor med ATP-mätning som hygienkontroll1992Report (Refereed)
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  • 283. Andersson, C
    et al.
    Ernstsson, Marie
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, YKI – Ytkemiska institutet.
    Järnström, L
    Barrier properties and heat sealability/failure mechanisms of dispersion coated paperboard2002In: Packaging technology & science, ISSN 0894-3214, E-ISSN 1099-1522, Vol. 15, p. 209-224Article in journal (Refereed)
    Abstract [en]

    Plate-like fillers are often added to improve barrier properties and to prevent blocking of dispersion coatings on paper and board. We have studied the effects of clay addition, neutralizing agent and drying conditions on water vapour permeability, water absorption, oxygen permeability and heat sealability of carboxylated styrene/butyl acrylate dispersion coatings on a pilot scale. The barrier dispersions were applied on a pre-coated side of a three-ply board, using a pre-metering roll coater. Coated strips were sealed under specified conditions of temperature, time and pressure and the sealability was assessed by measuring the peak load necessary to break the joints. The surface composition of the barrier-coated board was analysed and the mode of failure was characterized by ESCA. The occurrence of pinholes in the barrier coatings was assessed by both staining tests and ESEM/EDX analysis of the surface topography. The resulting barrier properties were satisfactory as far as resistance to water transport in both liquid and vapour form is concerned. The oxygen permeability was similar to that of similar amorphous polymers. Heat-sealing tests showed that the mode of failure was mainly cohesive in nature, as fibre tear occurred when sealed strips were separated. Neutralization with sodium hydroxide gave poor adhesion and had a negative effect on the seal strength. Barrier measurements and ESEM/EDX analysis both showed that the pinholes present extended only through the barrier coating

  • 284. Andersson, C
    et al.
    Järnstrom, L
    Fogden, A
    Mira, I
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, YKI – Ytkemiska institutet.
    Voit, W
    Zywicki, S
    Preparation and incorporation of microcapsules in functional coatings for self-healing of packaging board2009In: Packaging technology & science, ISSN 0894-3214, E-ISSN 1099-1522, Vol. 22, no 5, p. 275-291Article in journal (Refereed)
    Abstract [en]

    The replacement of flexible polyolefin barrier layers with novel, thin, functional polymer coatings in the production of paperboard packaging involves the risk of deteriorated barrier and mechanical properties during the converting process. Local defects or cracks in the protective barrier layer can arise because of the stress induced in creasing and folding operations. In this study, the incorporation of microencapsulated self-healing agents in coating formulations applied both by spot- and uniform-coating techniques was studied. The preparation process of microcapsules with a hydrophobic core surrounded by a hydrophobically modified polysaccharide membrane in aqueous suspension was developed to obtain capsules fulfilling both the criteria of small capsule size and reasonably high solids content to match the requirements set on surface treatment of paperboard for enhancement of packaging functionality. The survival of the microcapsules during application and their effectiveness as self-healing agents were investigated. The results showed a reduced tendency for deteriorated barrier properties and local termination of cracks formed upon creasing. The self-healing mechanism involves the rupture of microcapsules local to the applied stress, with subsequent release of the core material. Crack propagation is hindered by plasticization of the underlying coating layer, while the increased hydrophobicity helps to maintain the barrier properties.

  • 285. Andersson, C
    et al.
    Tullin, C
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Energiteknik (ET).
    Förbränning av returflis - kvalitetssäkring och drifterfarenheter.1999Report (Refereed)
  • 286.
    Andersson, Cathrine
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut.
    Petersson, Per-Erik
    RISE, SP – Sveriges Tekniska Forskningsinstitut.
    Härdningens inverkan på betongs permeabilitet och beständighet. Del 1.1987Report (Refereed)
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  • 287. Andersson, Christoffer
    et al.
    Gilbertsson, Mikael
    RISE, SP – Sveriges Tekniska Forskningsinstitut, JTI Institutet för Jordbruks- och Miljöteknik.
    Rogstrand, Gustav
    RISE, SP – Sveriges Tekniska Forskningsinstitut, JTI Institutet för Jordbruks- och Miljöteknik.
    Thylén, Lars
    Skördekartering av salix2004Report (Refereed)
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  • 288.
    Andersson, Christoffer
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, JTI Institutet för Jordbruks- och Miljöteknik.
    Lagerkvist, Carl-Johan
    Carlsson, Fredrik
    Hannerz, Nils
    Värdering av griskött på en lokal marknad: ur ett konsumentperspektiv2004Report (Refereed)
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  • 289.
    Andersson, E
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SIK – Svenska institutet för konserveringsforskning.
    Sensorisk analys av textur/konsistensegenskaper hos stekburgare innehållande texturerat sojaprotein : [Sensory analysis of texture/consistency in patties containing textured soy protein]1975Report (Refereed)
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  • 290. Andersson, Göran
    et al.
    Schouenborg, Björn
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB.
    Utmaningar och innovationer för hållbara städer i fokus i Vinnova-projektet2014In: Movium Direkt, no 8, p. 9-12Article in journal (Other academic)
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  • 291.
    Andersson, H O
    RISE, SP – Sveriges Tekniska Forskningsinstitut.
    Relevant elements of laboratory competence1998In: Accreditation and Quality Assurance, ISSN 0949-1775, E-ISSN 1432-0517, Vol. 3, no 7, p. 281-283Article in journal (Other academic)
  • 292.
    Andersson, H O
    RISE, SP – Sveriges Tekniska Forskningsinstitut.
    The 20th Nordic conference on metrology and calibration1999In: Accreditation and Quality Assurance, ISSN 0949-1775, E-ISSN 1432-0517, Vol. 4, no 7, p. 313-Article in journal (Other academic)
  • 293.
    Andersson, H O
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Bygg och Mekanik, Säkerhet och Funktion.
    The rational use of proficiency tests and intercomparisons1998In: Accreditation and Quality Assurance, ISSN 0949-1775, E-ISSN 1432-0517, Vol. 3, no 6, p. 224-226Article in journal (Other academic)
  • 294.
    Andersson, Hans
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Bygg och Mekanik.
    The use of uncertainty estimates in testing.1993Report (Refereed)
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  • 295.
    Andersson, Helene
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SIK – Institutet för livsmedel och bioteknik. Chalmers University of Technology, Sweden.
    Hjartstam, Johan
    AstraZeneca, Sweden.
    Stading, Mats
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SIK – Institutet för livsmedel och bioteknik. Chalmers University of Technology, Sweden.
    Von Corswant, Christian
    AstraZeneca, Sweden.
    Larsson, Anette
    Chalmers University of Technology, Sweden.
    Effects of molecular weight on permeability and microstructure of mixed ethyl-hydroxypropyl-cellulose films2013In: European Journal of Pharmaceutical Sciences, ISSN 0928-0987, E-ISSN 1879-0720, Vol. 48, no 42006, p. 240-248Article in journal (Refereed)
    Abstract [en]

    Films of ethyl cellulose (EC) and water-soluble hydroxypropyl cellulose (HPC) can be used for extended release coatings in oral formulations. The permeability and microstructure of free EC/HPC films with 30% w/w HPC were studied to investigate effects of EC molecular weight. Phase separation during film spraying and subsequent HPC leaching after immersion in aqueous media cause pore formation in such films. It was found that sprayed films were porous throughout the bulk of the films after water immersion. The molecular weight affected HPC leaching, pore morphology and film permeability; increasing the molecular weight resulted in decreasing permeability. A model to distinguish the major factors contributing to diffusion retardation in porous films showed that the trend in permeability was determined predominantly by factors associated with the geometry and arrangement of pores, independent of the diffusing species. The film with the highest molecular weight did, however, show an additional contribution from pore wall/permeant interactions. In addition, rapid drying and increasing molecular weight resulted in smaller pores, which suggest that phase separation kinetics affects the final microstructure of EC/HPC films. Thus, the molecular weight influences the microstructural features of pores, which are crucial for mass transport in EC/HPC films.

  • 296.
    Andersson, Helene
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Food and Bioscience. Chalmers University of Technology, Sweden.
    Häbel, Henrike
    Chalmers University of Technology, Sweden.
    Olsson, Anna
    Chalmers University of Technology, Sweden.
    Sandhagen, Sofie
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Food and Bioscience. Chalmers University of Technology, Sweden.
    von Corswant, Christian
    AstraZeneca, Sweden.
    Hjärtstam, Johan
    AstraZeneca, Sweden.
    Persson, Michael
    Chalmers University of Technology, Sweden; AkzoNobel, Sweden.
    Stading, Mats
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Food and Bioscience, Structure Design. Chalmers University of Technology, Sweden.
    Larsson, Anette
    Chalmers University of Technology, Sweden.
    The influence of the molecular weight of the water-soluble polymer on phase-separated films for controlled release2016In: International Journal of Pharmaceutics, ISSN 0378-5173, E-ISSN 1873-3476, Vol. 511, no 1, p. 223-235Article in journal (Refereed)
    Abstract [en]

    Hydroxypropyl cellulose (HPC) and ethyl cellulose (EC) can be used for extended release coatings, where the water-soluble HPC may act as a pore former. The aim was to investigate the effect of the molecular weight of HPC on the microstructure and mass transport in phase-separated freestanding EC/HPC films with 30% w/w HPC. Four different HPC grades were used, with weight averaged molecular weights (Mw) of 30.0 (SSL), 55.0 (SL), 83.5 (L) and 365 (M) kg/mol. Results showed that the phase-separated structure changed from HPC-discontinuous to bicontinuous with increasing Mw of HPC. The film with the lowest Mw HPC (SSL) had unconnected oval-shaped HPC-rich domains, leaked almost no HPC and had the lowest water permeability. The remaining higher Mw films had connected complex-shaped pores, which resulted in higher permeabilities. The highest Mw film (M) had the smallest pores and very slow HPC leakage, which led to a slow increase in permeability. Films with grade L and SL released most of their HPC, yet the permeability of the L film was three times higher due to greater pore connectivity. It was concluded that the phase-separated microstructure, the level of pore percolation and the leakage rate of HPC will be affected by the choice of HPC Mw grade used in the film and this will in turn have strong impact on the film permeability.

  • 297.
    Andersson, Helene
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Food and Bioscience. Chalmers University of Technology, Sweden.
    Stading, Mats
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Food and Bioscience. Chalmers University of Technology, Sweden.
    Hjärtstam, Johan
    Chalmers University of Technology, Sweden; Astra Zeneca R&D Mölndal, Sweden.
    von Corswant, Christian
    Chalmers University of Technology, Sweden; Astra Zeneca R&D Mölndal, Sweden.
    Larsson, Anette
    Chalmers University of Technology, Sweden.
    Effects of Molecular Weight on Phase Separated Coatings for Controlled Release of Drugs2013In: Annual Transactions of the Nordic Rheology Society, p. 249-Article in journal (Refereed)
    Abstract [en]

    Phase separated films with controlled porosity were made from ethyl cellulose (EC) and 30% w/w hydroxypropyl cellulose (HPC). The molecular weight of EC can be used to modify the mass transfer rate through coatings by effects on microstructure of the film. Processing conditions are, however, affected by the solution rheology, which could influence the film quality when using different molecular weights.

  • 298. Andersson, Helene
    et al.
    Öhgren, Camilla
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SIK – Institutet för livsmedel och bioteknik.
    Johansson, Daniel
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SIK – Institutet för livsmedel och bioteknik.
    Kniola, Magda
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SIK – Institutet för livsmedel och bioteknik.
    Stading, Mats
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SIK – Institutet för livsmedel och bioteknik.
    Extensional flow, viscoelasticity and baking performance of gluten-free zein-starch doughs supplemented with hydrocolloids2011In: Food Hydrocolloids, ISSN 0268-005X, E-ISSN 1873-7137, Vol. 25, no 6, p. 1587-1595Article in journal (Refereed)
    Abstract [en]

    Viscoelastic doughs of zein and starch were prepared at 40 °C, above the glass transition temperature of zein. The effects of hydrocolloid supplementation with hydroxypropyl methylcellulose (HPMC) or oat bran with a high content of ?-glucan (28%) were investigated by dynamic measurements in shear, confocal laser scanning microscopy (CLSM) and Hyperbolic Contraction Flow. Zein-starch dough without hydrocolloids exhibited rapid age-related stiffening, believed to be caused by cross-links between peptide chains. A prolonged softness was attributed to doughs containing hydrocolloids, with the oat bran exhibiting the most pronounced reduction in age-related stiffening. Moreover, CLSM-images of dough microstructure revealed that a finer fibre network may be formed by increased shearing through an addition of viscosity-increasing hydrocolloids, a reduction in water content in the dough or the use of appropriate mixing equipment. The Hyperbolic Contraction Flow measurements showed that doughs containing hydrocolloids had high extensional viscosities and strain hardening, suggesting appropriate rheological properties for bread making. Zein-starch dough without hydrocolloids showed poor bread making performance while hydrocolloid additions significantly improved bread volume and height. Although the hydrocolloid supplemented doughs had similar extensional rheological properties and microstructures, a fine crumb structure was attributed only to bread containing HPMC, marking the importance of surface active components in the liquid-gas interface of dough bubble walls. Zein could not mimic the properties of gluten on its own, but hydrocolloids did positively affect the structural and rheological properties of zein, which yielded dough similar to wheat dough and bread with increased volume. © 2011 Elsevier Ltd.

  • 299.
    Andersson, Håkan
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP Sveriges tekniska forskningsinstitut / Akustik (Eta).
    Kalibrering av accelerometrar med fransräkningsmetoden.1992Report (Refereed)
  • 300.
    Andersson, Håkan
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP Sveriges tekniska forskningsinstitut / Akustik (Eta).
    Round Robin test of an objective method for the determination of the prominence of impulsive sounds and for the impulse adjustment of LAeq. Nordtest project 1516-002000Report (Refereed)
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