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  • 601.
    Andersson, Hans
    SP – Sveriges Provnings- och Forskningsinstitut.
    Utvärdering och förslag avseende ett institut för miljödriven företagsutveckling i Sjuhäradsbygden.1997Report (Refereed)
  • 602.
    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.

  • 603.
    Andersson, Håkan
    SP - Sveriges Tekniska Forskningsinstitut / Akustik (Eta).
    Kalibrering av accelerometrar med fransräkningsmetoden.1992Report (Refereed)
  • 604.
    Andersson, Håkan
    Akustik (Eta).
    Osäkerhetsanalys för reciprocitetskalibrering av 1" kondensator-mikrofoner1990Report (Refereed)
  • 605.
    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)
  • 606.
    Andersson, Håkan
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP Sveriges tekniska forskningsinstitut / Akustik (Eta).
    Isaksson, Hans
    Werner, Gösta
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Kommunikation.
    Larmanordningar på utryckningsfordon.1991Report (Refereed)
  • 607.
    Andersson, Håkan
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut.
    Wittstock, Volker
    PTB Physikalisch-Technische Bundesanstalt, Germany.
    Traceable sound power measurements in essentially diffuse or free fields2016In: Proceedings of the INTER-NOISE 2016 - 45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future, 2016, p. 6783-6792Conference paper (Other academic)
    Abstract [en]

    Current methods for the determination of sound power such as the ISO 3740 series do not have a direct traceability to a primary standard. The different methods are regarded as equal, but they do give results with systematic differences. One task of the European project "EMRP JRP SIB 56 SoundPwr" has been to develop and investigate traceable and consistent methods for sound power measurements in essentially diffuse or free fields. By using a calibrated reference sound source as a traceability source, qualification procedures for setups for sound power determinations in different environments have been investigated. Uncertainty sources such as sound field sampling, directivity, frequency content and impedance of the device under test have been analysed. The results are presented in the contribution.

  • 608.
    Andersson, I. M.
    et al.
    Lund University, Sweden.
    Glantz, M.
    Lund University, Sweden.
    Alexander, M.
    Arla Foods Ingredients Group P/S, Denmark.
    Millqvist-Fureby, Anna
    RISE - Research Institutes of Sweden, Bioscience and Materials, Surface, Process and Formulation.
    Paulsson, M.
    Lund University, Sweden.
    Bergenståhl, B.
    Lund University, Sweden.
    Impact of surface properties on morphology of spray-dried milk serum protein/lactose systems2018In: International Dairy Journal, ISSN 0958-6946, E-ISSN 1879-0143, Vol. 85, p. 86-95Article in journal (Refereed)
    Abstract [en]

    This study investigated milk serum protein concentrate/lactose systems with varying ratios and how the morphology of the spray-dried particles of these systems could be described by the surface properties of the feed as well as the protein surface coverage of the particles. An extrapolation of the surface pressure of the feed to 0.3 s, the approximate time for molecular diffusion in an atomised droplet in the spray-dryer, showed a relationship with the particle morphology. At low protein concentrations (<1%), the particles were almost totally smooth. At higher protein concentrations (≥1%), the particles became dented and ridged, and these tended to become deeper and thicker as the protein concentration increased. It is suggested that the surface pressure of the feed at low protein concentrations is the most prominent surface property, whereas the modulus of elasticity seems to be the most prominent surface property for particle surface deformation at higher protein concentrations.

  • 609.
    Andersson, I. M.
    et al.
    Lund University, Sweden.
    Millqvist-Fureby, Anna
    RISE - Research Institutes of Sweden, Bioscience and Materials, Surface, Process and Formulation.
    Sommertune, Jens
    RISE - Research Institutes of Sweden, Bioscience and Materials, Surface, Process and Formulation.
    Alexander, M.
    Arla Foods Ingredients Group P/S, Denmark.
    Hellström, N.
    Lund University, Sweden.
    Glantz, Maria
    Lund University, Sweden.
    Paulsson, M.
    Lund University, Sweden.
    Bergenståhl, Björn
    Lund University, Sweden.
    Impact of protein surface coverage and layer thickness on rehydration characteristics of milk serum protein/lactose powder particles2019In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, ISSN 0927-7757, E-ISSN 1873-4359, Vol. 561, p. 395-404Article in journal (Refereed)
    Abstract [en]

    Spray-dried powders were produced from milk serum protein concentrate and lactose in varying ratios, and the rehydration characteristics of the powders were evaluated. The dissolution rate was estimated with a flow-cell based technique, and the external and internal distribution of the powder components were evaluated with X-ray photoelectron spectroscopy and confocal Raman microscopy, respectively. The surface of the powder particles is more or less covered by a thin protein layer. A phase segregation between protein and lactose is observed in the interior of the particle resulting in a protein rich layer in the vicinity of the surface. However, the protein layer in the vicinity of the particle surface tends to become thinner as the bulk protein concentration increases in the powders (from 10 to 60% w/w). The time for the spontaneous imbibition to occur show a linear correlation with the protein surface coverage. The dissolution rate of powders containing 0.1% w/w protein is around 60 times faster than for a powder containing 1% w/w protein but the dissolution rate of powders containing 1% and 100% w/w differ only by a factor of 2. Thus, it is suggested that the outer protein layer becomes denser at the interface as the protein content increases in the powders, thereby causing poorer rehydration characteristics of the powders (especially for low protein concentrations 0.1–1% w/w). This insight has relevance for the formulation of whey protein powders with improved rehydration characteristics. © 2018 Elsevier B.V.

  • 610. Andersson, J.
    et al.
    Bosvik, Rolf
    SIK – Svenska institutet för konserveringsforskning.
    von Sydow, Erik
    SIK – Svenska institutet för konserveringsforskning.
    The composition of the essential oil of black currant leaves (Ribes nigrum L.)1963In: Journal of the Science of Food and Agriculture, Vol. 14, no 11, p. 834-840Article in journal (Refereed)
  • 611. Andersson, J.
    et al.
    Lundgren, J.
    Marklund, Magnus
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energy Technology Center.
    Methanol production via pressurized entrained flow biomass gasification: Techno-economic comparison of integrated vs. stand-alone production2014In: Biomass and Bioenergy, ISSN 0961-9534, E-ISSN 1873-2909, Vol. 64, p. 256-268Article in journal (Refereed)
    Abstract [en]

    The main objective with this work was to investigate techno-economically the opportunity for integrated gasification-based biomass-to-methanol production in an existing chemical pulp and paper mill. Three different system configurations using the pressurized entrained flow biomass gasification (PEBG) technology were studied, one stand-alone plant, one where the bark boiler in the mill was replaced by a PEBG unit and one with a co-integration of a black liquor gasifier operated in parallel with a PEBG unit. The cases were analysed in terms of overall energy efficiency (calculated as electricity-equivalents) and process economics. The economics was assessed under the current as well as possible future energy market conditions. An economic policy support was found to be necessary to make the methanol production competitive under all market scenarios. In a future energy market, integrating a PEBG unit to replace the bark boiler was the most beneficial case from an economic point of view. In this case the methanol production cost was reduced in the range of 11-18 Euro per MWh compared to the stand-alone case. The overall plant efficiency increased approximately 7%-units compared to the original operation of the mill and the non-integrated stand-alone case. In the case with co-integration of the two parallel gasifiers, an equal increase of the system efficiency was achieved, but the economic benefit was not as apparent. Under similar conditions as the current market and when methanol was sold to replace fossil gasoline, co-integration of the two parallel gasifiers was the best alternative based on received IRR. © 2014 Elsevier Ltd.

  • 612.
    Andersson, J
    et al.
    RISE - Research Institutes of Sweden, ICT, Viktoria.
    Skoglund, T.
    Sweco Society AB, Sweden.
    Strand, N.
    VTI Swedish National Road and Transport Research Institute, Sweden.
    The Human-Tech Matrix: A Socio-Technical Approach to Evaluation of Automated Transport Systems2019In: Adv. Intell. Sys. Comput., 2019, p. 375-380Conference paper (Refereed)
    Abstract [en]

    An automated transport system has the potential to improve traffic safety and flow, but also to the accessibility and comfort for users of the transport system. Realizing the positive effects with automated transport is about shaping regulatory, organizational and technical systems. Here, appropriate evaluation enables steering efforts in the desired direction. The overall aim of this study was to develop a methodological framework that could identify effects of an automated transport system, and outline methods and metrics for evaluation of these effects. We propose a tentative case-based methodology to define measures of the effects of an automated transport system that will give key stakeholders new possibilities to evaluate research and development projects and efforts connected to automation of the transport system, and thereby manage these in a human-centered direction. © 2019, Springer Nature Switzerland AG.

  • 613. Andersson, J
    et al.
    Stenhamre, H
    Bäckdahl, Henrik
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Medicinteknik.
    Gatenholm, P
    Behaviour of human chondrocytes in engineered porous bacterial cellulose scaffolds. J Biomed Mater Res: Part A. 94A2010In: J Biomed Mater Res: Part A., Vol. 94A, no 4, p. 1124-1132Article in journal (Refereed)
  • 614. Andersson, J.
    et al.
    von Sydow, Erik
    SIK – Svenska institutet för konserveringsforskning.
    The aroma of black currants.: 1. Higher boiling compunds1964In: Acta Chemica Scandinavica, ISSN 0904-213X, E-ISSN 1902-3103, Vol. 18, no 5, p. 1105-1114Article in journal (Refereed)
  • 615. Andersson, J.
    et al.
    von Sydow, Erik
    SIK – Svenska institutet för konserveringsforskning.
    The aroma of black currants.: 2. Lower boiling compounds.1966In: Acta Chemica Scandinavica, ISSN 0904-213X, E-ISSN 1902-3103, Vol. 20, no 2, p. 522-528Article in journal (Refereed)
  • 616. Andersson, J.
    et al.
    von Sydow, Erik
    SIK – Svenska institutet för konserveringsforskning.
    The aroma of black currants.: 3. Chemical characterization of different varieties and stages of ripeness by gas chromatography1966In: Acta Chemica Scandinavica, ISSN 0904-213X, E-ISSN 1902-3103, Vol. 20, no 2, p. 529-535Article in journal (Refereed)
  • 617.
    Andersson, J Y
    et al.
    RISE, Swedish ICT, Viktoria.
    Höglund, L
    Noharet, B
    Wang, Q
    RISE, Swedish ICT, Acreo.
    Ericsson, P
    Wissmar, S
    Asplund, C
    Malm, H
    Martijn, H
    Hammar, M
    Gustafsson, O
    Hellström, S
    Radamson, H
    Holtz, PO
    Quantum structure based infrared detector research development within 874750’s centre of excellence IMAGIC2010In: Infrared physics & technology, ISSN 1350-4495, E-ISSN 1879-0275, Vol. 53, p. 227-30Article in journal (Refereed)
  • 618.
    Andersson, Jan-Erik
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Hållbar Samhällsbyggnad.
    Optimering och segmentering av tryckluftssystem2016Report (Refereed)
  • 619.
    Andersson, Jan-Erik
    Förädling och processer (TRf).
    Utvärdering av tork2013Report (Refereed)
  • 620.
    Andersson, Jan-Erik
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Förädling och processer (TRf).
    Lycken, Anders
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP Trä.
    Nordman, Roger
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energi och Bioekonomi, Klimatisering och installationsteknik.
    Olsson, Marcus
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energi och Bioekonomi, Klimatisering och installationsteknik.
    Räftegård, Oskar
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energi och Bioekonomi, Klimatisering och installationsteknik.
    Wamming, Thomas
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP Trä.
    State of the art – Energianvändning i den svenska sågverksindustrin2011Report (Refereed)
  • 621.
    Andersson, Jan-Erik
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut.
    Nordman, Roger
    RISE, SP – Sveriges Tekniska Forskningsinstitut.
    Vikberg, Tommy
    Luleå Technical University, Sweden.
    Energy mapping in the sawmill industry with focus on drying kilns2013Conference paper (Other academic)
    Abstract [en]

    The forest industry stands for approximately 11 % of Sweden’s total export. However, the forest industry is energy intensive. In 2008, sawmill industry alone consumed almost 8,7 TWh of energy, corresponding to 5 % of the Swedish industries total energy consumption. Out of their total consumption, 2200 GWh was electric power, 194 GWh heating oil , 4229 GWh bio-fuel, 574 GWh district heating, and other fuels such as diesel 1503 GWh [1].The project ”EESI- Energy Efficiency in the Sawmill Industry” was started in the spring of 2010 with the aim of demonstrating the possibilities to reduce the energy consumption in the sawmill industry with 20 % by 2020. 16 sawmill corporations and 14 equipment suppliers has joined the project which is carried out in two phases of which the first phase was carried out during 2010 and 2011. EESI has now reached half time and the first energy-saving implementations have been completed at the participating sawmills.This paper presents the energy-mapping, measurements and modelling performed by the participating sawmills during the first phase of the project [2, 3]. The average energy consumption per sawn cubic metre of boards varied between approximately 300 to 500 kWh/m3. Out of this, the electricity consumption was on average 85 kWh/m3, bio-fuel 290 kWh/m3 and diesel 1.8 l/m3.However, the main concern from sawmills regarding energy consumption was the wood drying process. The striking results from the preliminary measurements were the large variation in energy consumption even with similar drying kilns. This was especially apparent for the heat consumption in kiln dryers which could vary as much as 50 % for the same dimension of spruce planks.The results from the first phase of the project resulted in a large number of actions in order to reduce the energy consumption which are now being implemented or have already been completed. Examples of those actions are: simplified management system adapted to sawmills, weighing of packages for more accurate wood drying, reduced speed or intermittent operation of the air circulating fans in batch kilns and moisture content measurements of bio-fuel.References[1] Statistiska centralbyrån (SCB), 2013, Industrins årliga energianvändning 2011, Slutliga uppgifter, EN23SM1301, ISSN 1654-367X. (In Swedish). [2] Andersson, J-E., Lycken, A., Nordman, R., Olsson, M., Räftegård, O., and Wamming, T. State of the art – Energianvändning i den svenska sågverksindustrin. SP Rapport 2011:42, ISBN 978-91-86622-72-5. (In Swedish).[3] Andersson, J-E., Räftegård, O., Lycken, A., Olsson, M., Wamming, T., and Nordman, R. Sammanställning av energimätningar från EESI fas 1. SP Rapport 2011:41, ISBN 978-91-86622-71-8. (In Swedish).

  • 622.
    Andersson, Jan-Erik
    et al.
    Förädling och processer (TRf).
    Persson, Fredrik
    Förädling och processer (TRf).
    Kondenspanel och mittinblås för jämnare torkresultat2016Report (Refereed)
  • 623.
    Andersson, Jan-Erik
    et al.
    Förädling och processer (TRf).
    Räftegård, Oskar
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energi och Bioekonomi, Klimatisering och installationsteknik.
    Torkhus energijämförelse i praktiken – Sävar2016Report (Refereed)
  • 624.
    Andersson, Jan-Erik
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Förädling och processer (TRf).
    Räftegård, Oskar
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energi och Bioekonomi, Klimatisering och installationsteknik.
    Lycken, Anders
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP Trä.
    Olsson, Marcus
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energi och Bioekonomi, Klimatisering och installationsteknik.
    Wamming, Thomas
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP Trä.
    Nordman, Roger
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energi och Bioekonomi, Klimatisering och installationsteknik.
    Sammanställning av energimätningar från EESI fas 12011Report (Refereed)
  • 625.
    Andersson, Jens A.
    et al.
    Lund University, Sweden.
    Arvidsson, Åke
    Ericsson AB, Sweden.
    Du, Manxing
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Zhang, Huimin
    RISE, Swedish ICT, Acreo.
    Kihl, Maria
    Lund University, Sweden.
    Höst, Sefan
    Lund University, Sweden.
    Lagerstedt, Chhristina
    RISE, Swedish ICT, Acreo.
    User profiling for pre-fetching or caching in a catch-up TV network2016In: 2016 IEEE International Symposium on Broadband Multimedia Systems and Broadcasting (BMSB), 2016, article id 7521984Conference paper (Refereed)
    Abstract [en]

    We investigate the potential of different pre-fetching and/or caching strategies for different user behaviour with respect to surfing or browsing in a catch-up-TV network. To this end we identify accounts and channels associated with strong or weak surfing or browsing respectively and study the distributions of hold times for the different types of behaviour. Finally we present results from a request prediction model and a caching simulation for the different types of behaviour and find that the results are relatively similar.

  • 626.
    Andersson, Jerker
    et al.
    Rise SICS AB.
    Andersson, Per
    Rise SICS AB.
    On the usage of knowledge based techniques in configuring computer systems: a case study1989Report (Other academic)
    Abstract [en]

    The aim of the thesis has been to define the domains of control structure specification and process station configuration in order to find a general approach applicable to problems concerning the configuration of a process control system or any similar system. These findings are then used as the foundation for constructing a knowledge based system capable of realizing a problem solving method pertaining to the domain of configuring a specific computer system.

  • 627.
    Andersson, Jim
    et al.
    Luleå University of Technology, Sweden.
    Umeki, Kentaro
    Luleå University of Technology, Sweden.
    Furusjö, Erik
    Luleå University of Technology, Sweden.
    Kirtania, Kawnish
    Luleå University of Technology, Sweden.
    Weiland, Fredrik
    RISE - Research Institutes of Sweden, Bioeconomy, ETC Energy Technology Center.
    Multiscale Reactor Network Simulation of an Entrained Flow Biomass Gasifier: Model Description and Validation2017In: Energy Technology, ISSN 2194-4288, Vol. 5, p. 1-12Article in journal (Refereed)
    Abstract [en]

    This paper describes the development of a multiscale equivalent reactor network model for pressurized entrained flow biomass gasification to quantify the effect of operational parameters on the gasification process, including carbon conversion, cold gas efficiency, and syngas methane content. The model, implemented in the commercial software Aspen Plus, includes chemical kinetics as well as heat and mass transfer. Characteristic aspects of the model are the multiscale effect caused by the combination of transport phenomena at particle scale during heating, pyrolysis, and char burnout, as well as the effect of macroscopic gas flow, including gas recirculation. A validation using experimental data from a pilot-scale process shows that the model can provide accurate estimations of carbon conversion, concentrations of main syngas components, and cold gas efficiency over a wide range of oxygen-to-biomass ratios and reactor loads. The syngas methane content was most difficult to estimate accurately owing to the unavailability of accurate kinetic parameters for steam methane reforming.

  • 628.
    Andersson, Joel
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Fire Research.
    Lennqvist, Andreas
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Fire Research.
    Andersson, Petra
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP Sveriges tekniska forskningsinstitut / Brandteknik, forskning (BRf ).
    Tuovinen, Heimo
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP Sveriges tekniska forskningsinstitut / Brandteknik, forskning (BRf ).
    Blomqvist, Per
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP Sveriges tekniska forskningsinstitut / Brandteknik, forskning (BRf ).
    A burn-through model for textile membranes in buildings as a tool in performance based fire safety engineering2010Report (Refereed)
  • 629. Andersson, Johan
    et al.
    Andersson, Stefan
    Boortz, Kent
    Carlsson, Mats
    RISE, Swedish ICT, SICS, Computer Systems Laboratory.
    Nilsson, Hans
    Sjöland, Thomas
    RISE - Research Institutes of Sweden, ICT, SICS.
    Widén, Johan
    RISE - Research Institutes of Sweden, ICT, SICS.
    SICStus Prolog user's manual, version 2.1 #81993Report (Other academic)
    Abstract [en]

    This Manual corresponds to SICStus Prolog release 2.1. #8 Prolog is a simple but powerful programming language developed at the University of Marseilles (Prolog : Manuel de Reference et d'Utilisation by P.Roussel, Groupe d'Intelligence Artificielle, Marseille-Luminy, 1975), as a practical tool for programming in Logic (Logic for Problem Solving by R.A. Kowalski, DCL Memo 75, Dept. of Artificial Intelligence, University of Edinburgh, March, 1974.)) From a user's point of view the major attraction of the language is ease of programming. Clear, readable, concise programs can be written quickly with few errors. This manual describes a Prolog system developed at the Swedish Institute of Computer Science in collaboration with Ericsson Telecom AB, NobelTech Systems AB, Infologics AB and Televerket under the IT4 program. The system consists of a WAM emulator written in C, a library and runtime system written in C and Prolog and an interpreter and a compiler written in Prolog. The Prolog engine is a Warren Abstract Machine (WAM) emulator defined by D:H:D: Warren in An Abstract Prolog Instruction Set, Tech. Note 309, International, Menlo Park, CA, 1983. Two modes of compilation are available: in-core i.e. incremental, and file-to-file.

  • 630.
    Andersson, Johan
    et al.
    RISE - Research Institutes of Sweden, Bioscience and Materials, Agrifood and Bioscience.
    Nordberg, Åke
    SLU Swedish University of Agricultural Sciences, Sweden.
    Westin, Gunnar
    RISE - Research Institutes of Sweden, Bioeconomy, Processum.
    Askfilter för rening av svavelväte i deponigas2017Report (Other academic)
    Abstract [en]

    Landfill gas is formed under anaerobic conditions in landfills by microbial degradation of organic material. The gas composition can vary, but at Swedish landfills the gas generally consists of 40-60% methane, 30-40% carbon dioxide and 5-20% nitrogen. Hydrogen sulphide (H2S) is a highly toxic and corrosive gas, which occur in landfill gas in varying concentrations, from 10 to 30,000 ppm (equivalent to 0.001 to 3.0%). It is desirable that the landfill gas is used for electricity and/or heat production, but to do that there is a need to clean the gas to reach <200 ppm H2S. High levels of H2S increases wear on the engine/boiler and thus the frequency of servicing. This leads to expensive maintenance costs, and ultimately shortens the economic life of the plant. To reduce corrosion, it is common to adjust the flue gas temperature, but this also leads to a lower efficiency and thus reduces the energy utilization of the gas. In some cases the gas concentration of H2S is judged to be too high to be used for energy production at all. In 2015, approximately 53 GWh of landfill gas was flared in Sweden, which in many cases is due to problems with high levels of H2S.

     

    Cleaning of landfill gas from H2S leads to several values; the gas energy is used efficiently, maintenance and service costs of the engines/boiler are reduced, and emissions of acidifying sulphur dioxide from combustion of landfill gas decreases. There are commercial cleaning technologies for H2S but they are expensive, both in terms of capital cost and operating cost. Thus, there is a need to develop new cost efficient cleaning technologies that improve the economic outcome at landfills and that enables landfill gas with high H2S concentrations to be utilized for valuable energy transformation.

     

    RISE (formerly JTI – Swedish Institute of Agricultural and Environmental Engineering) together with SLU develops new, potentially cost-efficient methods for upgrading biogas to fuel quality. One of the methods is based on the gas passing through a bed of moist ash (a so-called ash filter), where carbon dioxide and H2S are fixed. The hypothesis of this project was that ashes originating from the incineration of waste, recycled waste wood etc., can be used to clean the high levels of H2S in landfill gas. This type of ashes will usually be disposed of in landfills anyway and if the treatment effect is good, it would generate synergy effects in the form of the ash first being used to clean landfill gas from sulphur before it is used as a construction material at landfills.

     

    This project performed two trials in pilot scale at a Swedish landfill with very high concentration of H2S, approximately 15,000 ppm. Different gas flow rates were studied (0.7 to 7.6 m3 / h), while the volume of ash used were similar in the two trials, 0,37 m3. The concentration of H2S in the cleaned gas was consistently very low during treatment, < 10 ppm at low gas flow rates and < 200 ppm at high gas flow rates. Two types of ash were investigated and both proved to have very good capacity to fix H2S, 44-61 g H2S/kg dry ash. In comparison with literature values, there is only one study showing an uptake capacity in the same order. Other studies report an order of magnitude lower uptake capacity.

    Based on the experimental results, the technical and economic potential for an ash filter as the cleaning method was assessed. The calculations were made for various typical landfills to cover the different range of landfills. For normal sized landfills with gas flow rates of 100-1 000 m3/h and H2S concentrations between 100 and 1 000 ppm, the amount of ash needed is 10-130 tons of dry ash per year. For the special case where the H2S concentration is extremely high, the amount of ash increases and a plant with 15 000 ppm H2S and a gas flow rate of 200 m3/h requires approximately 800 tons of dry ash per year. However, overall modest amounts of ash is required and considering all Swedish landfills the requirement of ash would be only 0.2-0.3% of the annual production of ash in Sweden.

     

    The economic calculations show that the ash filter is a competitive method for removal of H2S. For the special case of extremely high levels of H2S, it turned out that the cost of the ash filter is approximately 20% lower in comparison with the cheapest feasible conventional cleaning technology on the market. Also for the cleaning of landfill gas at more normal levels of H2S, the ash filter is competitive. At low gas flow rates (100 m3/h), the ash filter is clearly competitive compared to literature values for conventional cleaning technologies. The economy of scale seems to be higher for the conventional cleaning technologies, and consequently the difference between the cost of ash filter cleaning and other technologies is less at higher gas flow rates.

     

    The low treatment cost of the ash filter reveals opportunities for landfills that currently do not clean the gas from H2S. During the project 15 Swedish landfills was contacted and none of these reported any form of H2S cleaning. When using cleaning, the landfill gas can be used effectively, i.e. reduced flaring, increased efficiency of electricity and heat production with reduced wear on boilers and combustion equipment as well as reduced emissions of sulphur into the atmosphere, which also reduces the potential odour problems around the landfill.

     

    For further development, the design of an ash filter module prototype at full-scale is important. Furthermore, the treated ashes should be analysed for leaching characteristics, storability and usability as construction materials or as cover landfills along with an assessment of the overall environmental impact. Further tests at full scale should be made at other landfills with various gas flow rates and H2S concentrations to verify the performance of the conducted pilot tests.

  • 631.
    Andersson, Johan
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, JTI Institutet för Jordbruks- och Miljöteknik.
    Olsson, Henrik
    RISE, SP – Sveriges Tekniska Forskningsinstitut, JTI Institutet för Jordbruks- och Miljöteknik.
    Ascue, Johnny
    RISE, SP – Sveriges Tekniska Forskningsinstitut, JTI Institutet för Jordbruks- och Miljöteknik.
    Rogstrand, Gustav
    RISE, SP – Sveriges Tekniska Forskningsinstitut, JTI Institutet för Jordbruks- och Miljöteknik.
    Processintern metananrikning vid gödselrötning: försök i pilotskala2014Report (Refereed)
  • 632.
    Andersson, Jonas
    et al.
    RISE - Research Institutes of Sweden, ICT, Viktoria.
    Habibovic, Azra
    RISE - Research Institutes of Sweden, ICT, Viktoria.
    Klingegård, Maria
    RISE - Research Institutes of Sweden, ICT, Viktoria.
    Englund, Cristofer
    RISE - Research Institutes of Sweden, ICT, Viktoria.
    Malmsten-Lundgren, Victor
    RISE - Research Institutes of Sweden, ICT, Viktoria.
    Hello Human, can you read my mind?2017In: ERCIM News, ISSN 0926-4981, E-ISSN 1564-0094, no 109, p. 36-37Article in journal (Other academic)
    Abstract [en]

    For safety reasons, autonomous vehicles should communicate their intent rather than explicitly invitepeople to act. At RISE Viktoria in Sweden, we believe this simple design principle will impact howautonomous vehicles are experienced in the future

  • 633. Andersson, Jonas
    et al.
    Lönnermark, Anders
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Brandteknik, skydd (BRs ).
    External conditions have a significant impact on the air flow in tunnels using transverse ventilation for smoke extraction2012In: Proceedings from the Fifth International Symposium on Tunnel Safety and Security, SP , 2012, , p. 319-327Conference paper (Other academic)
  • 634.
    Andersson, Jonas
    et al.
    RISE - Research Institutes of Sweden, ICT, Viktoria.
    Nilsson, Maria
    RISE - Research Institutes of Sweden, ICT, Viktoria.
    Pettersson, Stefan
    RISE - Research Institutes of Sweden, ICT, Viktoria.
    Introducing wireless charging for drivers of electrical vehicles in Sweden—Effects on charging behaviour and attitudes2017In: Adv. Intell. Sys. Comput., 2017, p. 951-962Conference paper (Refereed)
    Abstract [en]

    This paper reports on a Swedish large-scale research and demonstration study of wireless charging of electric vehicles. The study is the first of its kind outside North America. The purpose of the 18-month study was to test the technology during real life working conditions using 20 electric vehicles located at eight municipality and company sites in Sweden. The study indicates that the charging behaviour will most likely be different with inductive charging. There are clear benefits of inductive charging that have the potential to increase the attractiveness of electric vehicles, and there are no substantial evidence that perceived safety should hinder a wider adoption of inductive charging. Further, we conclude that the usability of the technology can have a high impact on perceived attractiveness, and should therefore be of focus in future developments of the technology.

  • 635.
    Andersson, K
    SIK – Institutet för livsmedel och bioteknik.
    Influence of reduced oxygen concentrations on lipid oxidation in food during storage1998Report (Refereed)
  • 636.
    Andersson, K
    SIK – Institutet för livsmedel och bioteknik.
    Life cycle assessment (LCA) of food products and production systems1998Report (Refereed)
  • 637.
    Andersson, K
    SIK – Institutet för livsmedel och bioteknik.
    Livscykelanalys av livsmedelsprodukter och produktionssystem1999Report (Refereed)
  • 638.
    Andersson, K
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SIK – Institutet för livsmedelsforskning.
    The influence of oxygen content on lipid oxidation in foods : a literature review1995Report (Refereed)
  • 639. Andersson, K
    et al.
    Kizling, J
    YKI – Ytkemiska institutet.
    Holmberg, K
    YKI – Ytkemiska institutet.
    Byström, S
    A ring-opening reaction performed in a microemulsion1998In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, ISSN 0927-7757, E-ISSN 1873-4359, Vol. 144, p. 259-266Article in journal (Refereed)
  • 640.
    Andersson, K
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SIK – Institutet för livsmedelsforskning.
    Ohlsson, T
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SIK – Institutet för livsmedelsforskning.
    Olsson, P
    Life cycle assessment (LCA) of food products and production systems : report to the Swedish Waste Research Council (AFR), June 30, 19931993Report (Refereed)
  • 641.
    Andersson, Kajsa
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energi och Bioekonomi, Klimatisering och installationsteknik.
    Lindahl, Markus
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energi och Bioekonomi, Klimatisering och installationsteknik.
    Nordman, Roger
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energi och Bioekonomi, Klimatisering och installationsteknik.
    Nowak, Tomas
    Polyzou, Olympia
    Coevoet, Michel
    Zottl, Andreas
    Report on main points for improvement of existing or future legislation on HP systems2011Report (Other (popular science, discussion, etc.))
  • 642.
    Andersson, Karin
    SIK – Institutet för livsmedel och bioteknik.
    LCA of food products and production systems.2000In: International Journal of Life Cycle Assessment, Vol. 5, no 4, p. 239-248Article in journal (Refereed)
  • 643.
    Andersson, Karin
    et al.
    SIK – Institutet för livsmedel och bioteknik.
    Eide, Merete Høgaas
    SIK – Institutet för livsmedel och bioteknik.
    Lundqvist, U.
    Mattsson, Berit
    SIK – Institutet för livsmedel och bioteknik.
    The feasibility of including sustainability in LCA for product development1998In: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 6, no 42067, p. 289-298Article in journal (Refereed)
    Abstract [en]

    The feasibility of combining the concept of sustainability principles and the methodology of Life Cycle Assessment (LCA) is examined. The goal is to achieve an operational tool that incorporates sustainability in product development and strategic planning. While the method outlined has the structure of LCA, it emphasises aspects and parameters often omitted from traditional LCA. The analysis and results can be either qualitative or semi-quantitative. Although a qualitative analysis is less time consuming, it can still highlight the important issues. Qualitative information, which is easily lost in a quantitative analysis, can be emphasised. One of the conclusions is that the method is well suited for screening analysis. © 1998 Elsevier Science Ltd. All rights reserved.

  • 644.
    Andersson, Karin
    et al.
    SIK – Institutet för livsmedel och bioteknik.
    Eide, Merete Høgaas
    SIK – Institutet för livsmedel och bioteknik.
    Lundqvist, Ulrika
    Mattsson, Berit
    SIK – Institutet för livsmedel och bioteknik.
    Feasibility of including sustainability in LCA for product development1998In: Journal of cleaner production, ISSN 0346-718X, Vol. 6, no 3-4, p. 289-98Article in journal (Refereed)
    Abstract [en]

    The feasibility of combining the concept of sustainability principles and the methodology of Life Cycle Assessment (LCA) is examined. The goal is to achieve an operational tool that incorporates sustainability in product development and strategic planning. While the method outlined has the structure of LCA, it emphasizes aspects and parameters often omitted from traditional LCA. The analysis and results can be either qualitative or semi-quantitative. Although a qualitative analysis is less time consuming, it can still highlight the important issues. Qualitative information, which is easily lost in a quantitative analysis, can be emphasized. One of the conclusions is that the method is well suited for screening analysis.

  • 645.
    Andersson, Karin
    et al.
    SIK – Institutet för livsmedel och bioteknik.
    Lingnert, Hans
    SIK – Institutet för livsmedel och bioteknik.
    Influence of oxygen and copper concentration on lipid oxidation in rapeseed oil1998In: Journal of the American Oil Chemists Society, ISSN 0003-021X, E-ISSN 1558-9331, Vol. 75, no 8, p. 1041-1046Article in journal (Refereed)
    Abstract [en]

    The influence of oxygen concentration and copper on lipid oxidation in rapeseed oil during storage at 40°C was investigated. The oil was stored in air, or with 1.1%, 0.17%, or 0.04% oxygen in the headspace, and 70 or 0.07 ppm copper was added. Volatile oxidation products and oxygen consumption were monitored. Addition of 70 ppm copper to the sample in air resulted in a 70-fold higher hexanal concentration after 35 d of storage, compared to the sample without added copper. The addition of 0.07 ppm copper to the sample stored in air gave a doubled hexanal concentration, compared to the sample without copper, after 35 d of storage. For the samples with 70 ppm copper at 0.17% and 0.04% oxygen, all oxygen was consumed after 7 d of storage. The results show the importance of minimizing the oxygen available for oxidation, especially when pro-oxidants are present. In the sample with 70 ppm added copper, in air, the hexanal increase was 65 times larger than for the same sample in 0.04% oxygen. A comparison of the effect of oxygen or copper on oxidation shows that the addition of 70 ppm copper to the 0.04% oxygen sample gave the same increase in hexanal content as an oxygen increase to 0.17%.

  • 646.
    Andersson, Karin
    et al.
    SIK – Institutet för livsmedel och bioteknik.
    Lingnert, Hans
    SIK – Institutet för livsmedel och bioteknik.
    Influence of oxygen concentration and light on the oxidative stability of cream powder1998In: Lebensmittel-Wissenschaft + Technologie, ISSN 0023-6438, E-ISSN 1096-1127, Vol. 31, no 2, p. 169-176Article in journal (Refereed)
    Abstract [en]

    The production of volatile oxidation products and consumption of oxygen were measured in cream powder stored for 35 weeks at 30 °C in darkness or exposed to fluorescent light. The headspace of the bottles contained either air (209 mL O 2/L) or 13, 3.5, 0.4 or 0.3 mL/L oxygen in nitrogen. The exposure to light strongly influenced both the rate of hexanal production and oxygen consumption. After the first 5 weeks of storage in light, significantly different oxygen-dependent increases in hexanal were found for all samples. Although the samples stored in darkness showed a much smaller hexanal increase, it was still significant during storage. After 35 weeks of storage, the dark-stored sample in air showed a highly significant larger hexanal increase than all the other samples stored in darkness, but after the same storage period, the hexanal increase in the 13, 3.6 and 0.4 mL O 2/L samples was the same. The production of the Strecker aldehyde, 3-methylbutanal, was found to depend on light and to some extent on oxygen concentration, which indicates that lipid oxidation also influenced the conditions of the Maillard reaction. © 1998 Academic Press Limited.

  • 647.
    Andersson, Karin
    et al.
    SIK – Institutet för livsmedel och bioteknik.
    Lingnert, Hans
    SIK – Institutet för livsmedel och bioteknik.
    Influence of oxygen concentration on the flavour and chemical stability of cream powder1998In: Lebensmittel-Wissenschaft + Technologie, ISSN 0023-6438, E-ISSN 1096-1127, Vol. 31, no 3, p. 245-251Article in journal (Refereed)
    Abstract [en]

    Descriptive sensory analysis and analysis of hexanal content were performed on cream powder stored in darkness at different oxygen concentrations at 30 °C for up to 45 weeks. The headspace of the samples contained 209 (air), 13, 3.6, 0.4 or 0.3 m/L oxygen/L headspace gas. All samples stored with reduced oxygen content were, with one exception, significantly different from the air-packed sample after 25 as well as after 45 weeks of storage, both in their hexanal concentration and according to sensory analysis. However, there were no significant sensory differences between the samples stored with reduced oxygen for 25 or 45 weeks. Analysis of the hexanal concentration in the samples was a more sensitive method than sensory analysis for detecting differences between samples stored for the same length of time. Furthermore, some of the samples with reduced oxygen concentration were found to differ significantly in their hexanal concentration. Significant differences between samples before storage and samples stored for 25 or 45 weeks, regardless of oxygen concentration, were found by both sensory and chemical analyses. © 1998 Academic Press.

  • 648. Andersson, Karin
    et al.
    Lingnert, Hans
    SIK – Institutet för livsmedel och bioteknik.
    Influence of oxygen concentration on the storage stability of cream powder1997In: Lebensmittel-Wissenschaft + Technologie, ISSN 0023-6438, E-ISSN 1096-1127, Vol. 30, no 2, p. 147-154Article in journal (Refereed)
    Abstract [en]

    The influence of low oxygen concentrations on lipid oxidation during storage of cream powder was studied. The powder was packed with oxygen concentrations of 209 mL/L, 17 mL/L, 8.3 mL/L, 3.4 mL/L, 1.5 mL/L, 0.7 mL/L and 0.6 mL/L and stored in darkness at 30°C for 29 weeks. To follow oxidation, the formation of volatile oxidation products and oxygen consumption were measured. After 7 weeks of storage a significant (P <0.01) hexanal development was already seen in all the samples, and the hexanal content was directly related to the initial oxygen content, with one exception, the 0.6 mL/L sample, which had a slightly (but not significantly, P >0.05) higher hexanal content than the 0.7 mL/L sample. There were only small differences in hexanal formation between the samples packed with oxygen concentrations below 3.4 mL/L. This could be due to a more pronounced influence of oxygen diffusion at these low levels of oxygen, leading to a diffusion-controlled oxidation. Other volatiles, not produced by lipid oxidation, also increased during storage. The formation of Strecker aldehydes was found to be oxygen-dependent, whereas the formation of 2-alkanones was not. Measurement of oxygen consumption was not sufficient to detect differences in oxidation rate between the samples packed with 17 mL/L oxygen and less. © 1997 Academic Press Limited.

  • 649.
    Andersson, Karin
    et al.
    SIK – Institutet för livsmedel och bioteknik.
    Lingnert, Hans
    SIK – Institutet för livsmedel och bioteknik.
    Kinetic studies of oxygen dependence during initial lipid oxidation in rapeseed oil1999In: Journal of Food Science, ISSN 0022-1147, E-ISSN 1750-3841, Vol. 64, no 2, p. 262-266Article in journal (Refereed)
    Abstract [en]

    Lipid oxidation was studied in rapeseed oil, stored at 35 or 50°C in 0.03, 0.3, 1.0 or 1.8% oxygen for 42 days. Peroxide value (PV), oxygen consumption, tocopherol consumption and production of volatile compounds were analyzed to follow the oxidation. At 50°C, lipid oxidation measured as oxygen consumption or PV was only slightly influenced by oxygen concentration ?1%. Below 0.5% the influence was strongly enhanced. The production of volatiles showed different relationships to oxygen concentration and some compounds were produced in larger amounts at lower O2, than at higher O2 concentrations.

  • 650.
    Andersson, Karin
    et al.
    SIK – Institutet för livsmedel och bioteknik.
    Ohlsson, Thomas
    SIK – Institutet för livsmedel och bioteknik.
    Including environmental aspects in production development: A case study of tomato ketchup1999In: Lebensmittel-Wissenschaft + Technologie, ISSN 0023-6438, E-ISSN 1096-1127, Vol. 32, no 3, p. 134-141Article in journal (Refereed)
    Abstract [en]

    An environmental Life Cycle Assessment (LCA) study of a specific tomato ketchup was carried out. The objectives of the work were to illustrate how LCA can be used in production development; to investigate the influence of the geographical location of certain processes; and to find ways to improve the product's environmental performance. In the screening LCA which includes the whole life cycle, the packaging and processing sub-systems were found to be significant in the total environmental impact made by ketchup. Accordingly, six alternative systems, including packaging, processing and transportation, were modelled and simulated. The environmental impact categories included were energy use, global warming, acidification, eutrophication, photo-oxidant formation and the generation of radioactive waste. It was concluded that the current geographical location of the production of ketchup is preferable; the contributions to acidification can be reduced significantly; and the environmental profile of the product can be improved for either the type of tomato paste currently used or a less concentrated tomato paste. A shift to a less concentrated paste would also mean that traditional quality parameters of the ketchup could be improved. © 1999 Academic Press.

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