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  • 301. Adamopoulos, Stergios
    et al.
    Voulgaridis, E
    Impregnation of timber and regulations applied to preservation practice in Greece1998Conference paper (Refereed)
    Abstract [en]

    The practice of wood preservation in Greece was started about 80 years ago and refer to creosote-treated timber used in ground contact (i.e. railway sleepers, poles). At present, three creosote impregnation plants and thirteen CCA or CCB units exist in Greece treating about 90.000 m3 of wood per year. Most of the research on wood preservation has been carried out in the last 15-20 years and refer to the application of creosote and water soluble preservatives (CCA, CCB) to native wood species. However, research on a number of specific topics of wood impregnation is lacking. Impregnation of wood is of great importance for Greece, a country with great wood deficit, and, for this reason, the elongation of wood durability is strongly desirable. On the other hand, the environmentally safe impregnation of timber and the use of preservatives in a non-hazardous manner to humans or animals are gaining an increasing importance. There are some national and EU regulations applied to the use of preservatives, while the Greek Organization of Standardization (ELOT) is responsible for approving European standards. The organizations of Greek Telecommunication, Electricity and Railway apply their own standards.

  • 302. Adamopoulos, Stergios
    et al.
    Voulgaridis, E
    Passialis, C
    Morphology and identification of fibre furnish components of papers used in the production of corrugated board2013In: Celuloza Si Harti, ISSN 1220-9848Article in journal (Refereed)
  • 303.
    Adamopoulos, Stergios
    et al.
    Aristotle University, Greece.
    Voulgaridis, Elias
    Aristotle University, Greece.
    Dimensional changes of extracted and non-extracted small wood specimens of black locust (Robinia pseudoacacia L.)2003In: European Journal of Wood and Wood Products, ISSN 0018-3768, E-ISSN 1436-736X, Vol. 61, no 4, p. 264-268Article in journal (Refereed)
    Abstract [en]

    From straight grained heartwood of black locust (Robinia pseudoacacia L.), specimens, 3 cm×3 cm in cross section and 0.5 mm (or 10 mm) in axial direction, were cut and used for the determination of dimensional changes and the rate of tangential swelling. Mean radial, tangential and axial shrinkage was 5.30%, 6.67% and 0.16%, respectively, while the coefficient of anisotropy was 1.26. Half of the specimens for the determination of the rate of tangential swelling were extracted for 48 h with distilled hot water. The tangential dimensional change and the time taken to attain half maximum swelling in air-dry and oven-dry specimens were assessed according to a common technique. Extractive removal resulted in an increase of the total magnitude of tangential swelling in both air-dry and oven-dry specimens. However, no significant differences in time taken to attain half maximum swelling between air-dry and oven-dry specimens were observed after extraction. The rate of tangential swelling was lower in air-dry specimens than in oven-dry specimens after 30 min of immersion in water when were non-extracted and after 5 min of immersion in water when were extracted. Extracted air-dry specimens had a greater rate of tangential swelling than non-extracted air-dry specimens and the same occurred for oven-dry specimens. Extraction resulted in a higher diffusion coefficient for air-dry specimens. The diffusion coefficient calculated for non-extracted air-dry specimens (0.901×10−4 cm2/min) showed that black locust is a difficult species to impregnate.

  • 304.
    Adamopoulos, Stergios
    et al.
    Technological Educational Institute of Larissa, Greece.
    Voulgaridis, Elias
    Aristotle University of Thessaloniki, Greece.
    Effect of hot-water extractives on water sorption and dimensional changes of black locust wood2012In: Wood research, ISSN 1336-4561, Vol. 57, no 1, p. 69-78Article in journal (Refereed)
    Abstract [en]

    The hygroscopicity and the dimensional changes of black locust heartwood were investigated in relation to the progressive removal of hot-water extractives. Extraction in the original specimen form removed only part of the total 8.434 % hot-water extractives, 3.601 % in first extraction and 4.642 % in second extraction. As a result, the adsorption and desorption behaviour of black locust wood was little affected by the extraction and only a small increase was observed in dimensional changes at every RH from 0 % to 97 %. The mean hysteresis coefficient was also little affected by extraction and increased from 0.75 at the unextracted stage to 0.77 at the second extraction. The initial dimensional change 3.76 % of unextracted black locust wood corresponding to RH changes between 43 % and 80 % increased after the first and second extraction to the respective values of 3.96 % and 3.97 %. Extraction had no effect on the significant, very strong linear relationships between swelling or shrinkage and equilibrium moisture content (EMC).

  • 305.
    Adamopoulos, Stergios
    et al.
    Aristotelian University, Greece.
    Voulgaridis, Elias
    Aristotelian University, Greece.
    Within-tree variation in growth rate and cell dimensions in the wood of black locust (Robinia pseudoacacia)2002In: IAWA Journal, ISSN 0928-1541, Vol. 23, no 2, p. 191-199Article in journal (Refereed)
    Abstract [en]

    Black locust (Robinia pseudoacacia L.) is regarded as an important natural resource almost throughout the world but relatively little is known about the within-tree variability of the anatomical characteristics of its wood. Discs 2 cm thick were cut at 2.25 m intervals, from the ground level to the top from ten black locust trees, 18–37-years-old, from the University Forest of Taxiarchi, Chalkidiki, Greece. The discs were used for the determination of growth rate and cell dimensions (fiber length and vessel member length and diameter) and their withintree variability (radial, oblique, vertical). Growth rate increased within the first 5–9 growth rings from the pith and then gradually decreased. Oblique variation of growth rate did not exhibit any clear tendency but a decrease at the top. In the case of vertical variation, growth rate decreased gradually with the year of cambium formation. Radial variability curves were found to be typical for the dimensions of cells (fibers, vessel members) especially for the fiber length. A rapid increase in cell dimensions was observed in the first 7–11 growth rings, the juvenile zone. Oblique and vertical variation of cell dimensions did not exhibit any clear tendencies.

  • 306.
    Adamopoulos, Stergios
    et al.
    Technological Educational Institute of Larissa, Greece.
    Voulgaridis, Elias
    Aristotle University of Thessaloniki, Greece.
    Ποιότητα και μεταβλητότητα της δομής του ξύλουσε σχέση με την αξιοποίησή του: [Quality and variability of wood structure in relation to its utilization]2012In: Το Δάσος: Μια Ολοκληρωμένη Προσέγγιση: [The forest: An integrated approach] / [ed] Aristotélis Papageorgíou, Geórgios Karétsos, Geórgios Katsadorákis, WWF Greece , 2012, p. 213-227Chapter in book (Other academic)
  • 307. Adamopoulos, Stergios
    et al.
    Voulgaridis, Elias
    Passialis, C.
    Wood quality characteristics of black locust (Robinia pseudoacacia  L.)2001In: Forest Research - New Series, Vol. 14, p. 63-72Article in journal (Refereed)
  • 308.
    Adamopoulos, Stergios
    et al.
    Technological Educational Institute of Thessaly, Greece.
    Voulgaridis, Elias
    Aristotle University of Thessaloniki, Greece.
    Passialis, Costas
    Aristotle University of Thessaloniki, Greece.
    CARACTERISTICILE MATERIALULUI FIBROS ŞI PROPRIETĂŢILEHÂRTIEI RECICLATE FOLOSITE ÎN FABRICAREA CARTONULUIONDULAT: Morphology and identification of fibre furnish components of papers used in the production of corrugated board2013In: 7th International Symposium on Advanced Technologies for the Pulp, Paper and Corrugated Board Industry, 2013Conference paper (Refereed)
    Abstract [en]

    The manufacture of corrugated board containers (boxes, trays, etc.) involves a productionchain integrated by paper manufacturers, semi-elaborates (corrugated board) manufacturers andcontainer manufacturers, the majority of which in Europe are SMEs. Nowadays, corrugated boardcontainers are mostly manufactured with recovered paper. The greatest threat faced by thementioned production chain is related to the lack of quality and availability of recovered paper asraw material. Specifically, one of the most important properties of packaging paper is itsmechanical strength, which depends mostly on the length of the fibres of which paper iscomposed. These fibres are longer in virgin pulps (those coming from papers obtained fromwood, i.e. not yet recycled). However, the high pressure on the demand - as well as the currenteconomic and ecological restrictions in the use of forest based materials - has led to a situation inwhich very little quantity of virgin fibre enters the recycling chain. This means that the strengthquality of recycled fibres - and by extension of the papers - is constantly decreasing with the ongoingrecycling cycles. In addition, recovered paper presents a very high variability, whatconstitutes an obstacle when it comes to manufacturing containers having homogeneousproperties fixed by the customers at fixed costs. The difficulty of predicting the properties ofpaper products produced from heterogeneous sources puts several limitations, which thereforelead to severe economic losses and only a comprehensive characterization will enable their betterutilization. The project “RF-CORRUG – Quality control of raw materials from recovered fibresfor the production of corrugated board” under the National Strategic Reference Framework 2007–2013 ARCHIMEDES III deals with this common technical problem of the corrugated boardindustry. Specifically, the main objective of the project is to support the competitiveness of thecorrugated board companies (mainly SMEs) by creating a software tool based on practical modelsthat can predict packaging grade paper properties from fibre data (qualitative, quantitative, morphological) used in their production. This papers presents information on fibres (qualitativeand quantitative analysis, morphology) and packaging papers (physical and mechanicalproperties) used in corrugated packaging. A number of different category papers (liners, flutings) used for corrugated board production in Greece were examined. The main fibre characterizingtechniques, employed were fibre furnish analysis, morphological analysis of fibre, lightmicroscopy, scanning electron microscopy (SEM). In addition, zero span tensile test was done tomeasure the average fibre strength of fibre. The required paper properties were measured byinternationally recognized testers and standards. The data will be used to develop predictivemodels based on advanced statistical methods for the properties and performance of packagingpapers according to information of their fibres.

  • 309.
    Adamopoulos, Stergios
    et al.
    Technological Educational Institute of Thessaly, Greece.
    Voulgaridis, Elias
    Aristotle University of Thessaloniki, Greece.
    Passialis, Costas
    Aristotle University of Thessaloniki, Greece.
    Gypsum-based bricks (WoodRub BRICKS) manufactured from recovered wood and rubber2014In: Performance and maintenance of biobased building materials influencing the life cycle and LCA / [ed] Andreja Kutnar, Miha Humar, Michael Burnard, Mojca Žlahtič, Dennis Jones, 2014, p. 33-34Conference paper (Other academic)
  • 310.
    Adamopoulos, Stergios
    et al.
    Greece.
    Voulgaridis, Elias
    Greece.
    Passialis, Costas
    Greece.
    Recycled Waste Paper and the Corrugated Packaging Industry in Europe2009In: Proceedings of 24th International Conference on Solid Waste Technology and Management: Philadelphia, PA USA, March 15-18, 2009, 2009, p. 400-411Conference paper (Refereed)
  • 311.
    Adamopoulos, Stergios
    et al.
    Aristotle University, Greece.
    Voulgaridis, Elias
    Aristotle University, Greece.
    Passialis, Costas
    Aristotle University, Greece.
    Variation of certain chemical properties within the stemwood of black locust (Robinia pseudoacacia L.)2005In: European Journal of Wood and Wood Products, ISSN 0018-3768, E-ISSN 1436-736X, Vol. 63, no 5, p. 327-333Article in journal (Refereed)
    Abstract [en]

    From the bottom, middle, and top of three mature 35 to 37-year old black locust tree discs were cut and analysed to determine the variation within the stem of certain chemical properties. Hot-water extractive content was greater in heartwood than in sapwood, while the reverse occurred for the dichloromethane extractive content. Vertical stem analysis of hot-water extractives showed that they increased in heartwood but decreasedin sapwood from the bottom to the top of the stems while the reversal occurred for dichloromethane extractive content of sapwood. At the bottom and the middle of the stems, ash content was greater in sapwood than in heartwood, but at the top no difference was found between heartwood and sapwood. Ash content of both heartwood and sapwood was found to increase in the axial direction with respective values of 0.36% (bottom) and 0.76% (top) for heartwood and of 0.65% (bottom) and 0.76% (top) for sapwood. Ash analysis showed that considerable variations were found for the inorganic elements K and P being greater in sapwood than in heartwood. Heartwood was more acid than sapwood except for the top of the stems. Acidity mean values were found to increase from the bottom to the top of the stems in heartwood while they slightly decreased in sapwood. Total buffering capacity of heartwood was greater than that of sapwood and total buffering capacity of sapwood exhibited an inverse relationship to height. Very small acid equivalent values were determined only in sapwood. At the bottom, lignin content in heartwood (25.73%) was greater than in sapwood (18.13%). Lignin content of heartwood decreased from 25.73% at the bottom to 18.33% at the top, while that of sapwood was 18.13% at the bottom, 21.42% at the middle and 19.64% at the top.

  • 312.
    Adamopoulos, Stergios
    et al.
    Technological Educational Institute of Larissa, Greece.
    Voulgaridis, Elias
    Aristotle University of Thessaloniki, Greece.
    Passialis, Costas
    Aristotle University of Thessaloniki, Greece.
    Wood recycling in Europe2011Conference paper (Refereed)
    Abstract [en]

    Nowadays, waste wood is a valuable secondary raw material that can cover much of the wood-based panel industry's needs and a major source of renewable energy. The various categories of waste wood are described in European legislation and standards but in practice mostly followed industry practices relating to the purchase, classification and use of recovered wood. The European Panel Federation (EPF) proposes a three category classification system: untreated wood, non-hazardous treated wood, hazardous waste wood. The traditional practice of recycling in industry included mechanical handling of waste wood while new improved methods involve hydrothermal treatments. Of the total approximately 30 million cubic meters of recovered wood in Europe 38% is recycled, 34% is used for energy production and 28% ends up in landfills or composting. In the future recovered wood is expected to play an increasingly important role in the sustainability of wood-based panel industries as well as for the protection of the environment, and therefore new technologies are needed to fully explore this valuable resource.

  • 313.
    Adamopoulos, Stergios
    et al.
    Technological Edicational Institute of Larissa, Greece.
    Voulgaridis, Elias
    Aristotle University, Greece.
    Passialis, Costas
    Aristotle University, Greece.
    Beaver, Tim
    Composites & Textiles Pera, UK.
    Bouras, Takis
    ELKEDE Technology & Design Centre S.A., Greece.
    Properties of Microwave heat treated oak wood and impregnated with soybean oil2011In: Program & Book of Abstracts: Workshop, “Mechano-Chemical transformations of wood during Thermo-Hydro-Mechanical processing” / [ed] Parviz Navi, Andreas Roth, 2011, p. 145-145Conference paper (Other academic)
    Abstract [en]

    The poster presents selected data on physical and mechanical properties, and gluing behaviour of microwave heat treated wood and impregnated with natural oils.

  • 314.
    Adamopoulos, Stergios
    et al.
    Technological Education Institute of Larissa, Greece.
    Wimmer, Rupert
    Georg-August-University Göttingen, Germany.
    Milios, Elias
    Democritus University of Thrace, Greece.
    Tracheid length – growth relationships of young Pinus brutia grown on reforestation sites2012In: IAWA Journal, ISSN 0928-1541, Vol. 33, no 1, p. 39-49Article in journal (Refereed)
    Abstract [en]

    Brutia pine (Pinus brutia Ten.) reforestations have been successfully used for decades in restoration of degraded forest ecosystems in Greece. The future purpose of these reforestations might expand to include wood utilisation. This study provides information on tracheid length of juvenile brutia pine aged 14–22 years grown on good and medium sites in Northeastern Greece. In addition, relationships among ring width, latewood proportion, wood density, and tracheid length were evaluated by using Causal Correlation Analysis. Similar mean tracheid length values were found for good and medium sites. Radial variability of tracheid length was similar on the good and medium sites, showing the typical increase in the juvenile phase. On both site types, latewood proportion showed a strong and positive relationship with wood density. Unexpectedly and only on the good sites, a significant positive relationship was found between ring width and wood density. On the medium sites, tracheid length was negatively related to fast growth and positively to high wood density. Tracheid length on the good sites was correlated only with latewood proportion with a weak positive relationship. The overall results may provide opportunities to better understand the quality of small-dimension timber of brutia pine and to better utilise it.

  • 315.
    Adamopoulos, Stergios
    et al.
    Georg-August-University Goettingen, Germany ; Technological Educational Institute of Larissa, Greece.
    Xie, Yanjun
    Georg-August-University Goettingen, Germany.
    Militz, Holger
    Georg-August-University Goettingen, Germany.
    Distribution of blue stain in untreated and DMDHEU treated Scots pine sapwood panels after six years of outdoor weathering2011In: European Journal of Wood and Wood Products, ISSN 0018-3768, E-ISSN 1436-736X, Vol. 69, no 2, p. 333-336Article in journal (Refereed)
    Abstract [en]

    Surface coating and bulk treatment of wood are two effective measures which can, individually or conjointly, protect exterior wood from deterioration. This paper reports on the blue stain attack in coated wood, untreated and modified with DMDHEU, after six years of natural exposure.

  • 316.
    Adams, Marc A.
    et al.
    Arizona State University, USA.
    Ding, Ding
    University of Sydney, Australia.
    Sallis, James F.
    University of California, USA.
    Bowles, Heather R.
    National Institutes of Health, USA.
    Ainsworth, Barbara E.
    Arizona State University, USA.
    Bergman, Patrick
    Linnaeus University, Faculty of Social Sciences, Department of Sport Science.
    Bull, Fiona C.
    The University of Western Australia, Australia.
    Carr, Harriette
    Ministry of Health, New Zealand.
    Craig, Cora L.
    School of Public Health, Canada.
    De Bourdeaudhuij, Ilse
    Ghent University, Belgium.
    Fernando Gomez, Luis
    Hagstromer, Maria
    Klasson-Heggebo, Lena
    Inoue, Shigeru
    Lefevre, Johan
    Macfarlane, Duncan J.
    Matsudo, Sandra
    Matsudo, Victor
    McLean, Grant
    Murase, Norio
    Sjostrom, Michael
    Tomten, Heidi
    Volbekiene, Vida
    Bauman, Adrian
    Patterns of neighborhood environment attributes related to physical activity across 11 countries: a latent class analysis2013In: International Journal of Behavioral Nutrition and Physical Activity, ISSN 1479-5868, E-ISSN 1479-5868, Vol. 10, article id 34Article in journal (Refereed)
    Abstract [en]

    Background: Neighborhood environment studies of physical activity (PA) have been mainly single-country focused. The International Prevalence Study (IPS) presented a rare opportunity to examine neighborhood features across countries. The purpose of this analysis was to: 1) detect international neighborhood typologies based on participants' response patterns to an environment survey and 2) to estimate associations between neighborhood environment patterns and PA. Methods: A Latent Class Analysis (LCA) was conducted on pooled IPS adults (N=11,541) aged 18 to 64 years old (mean=37.5 +/- 12.8 yrs; 55.6% women) from 11 countries including Belgium, Brazil, Canada, Colombia, Hong Kong, Japan, Lithuania, New Zealand, Norway, Sweden, and the U. S. This subset used the Physical Activity Neighborhood Environment Survey (PANES) that briefly assessed 7 attributes within 10-15 minutes walk of participants' residences, including residential density, access to shops/services, recreational facilities, public transit facilities, presence of sidewalks and bike paths, and personal safety. LCA derived meaningful subgroups from participants' response patterns to PANES items, and participants were assigned to neighborhood types. The validated short-form International Physical Activity Questionnaire (IPAQ) measured likelihood of meeting the 150 minutes/week PA guideline. To validate derived classes, meeting the guideline either by walking or total PA was regressed on neighborhood types using a weighted generalized linear regression model, adjusting for gender, age and country. Results: A 5-subgroup solution fitted the dataset and was interpretable. Neighborhood types were labeled, "Overall Activity Supportive (52% of sample)", "High Walkable and Unsafe with Few Recreation Facilities (16%)", "Safe with Active Transport Facilities (12%)", "Transit and Shops Dense with Few Amenities (15%)", and "Safe but Activity Unsupportive (5%)". Country representation differed by type (e. g., U. S. disproportionally represented "Safe but Activity Unsupportive"). Compared to the Safe but Activity Unsupportive, two types showed greater odds of meeting PA guideline for walking outcome (High Walkable and Unsafe with Few Recreation Facilities, OR=2.26 (95% CI 1.18-4.31); Overall Activity Supportive, OR=1.90 (95% CI 1.13-3.21). Significant but smaller odds ratios were also found for total PA. Conclusions: Meaningful neighborhood patterns generalized across countries and explained practical differences in PA. These observational results support WHO/UN recommendations for programs and policies targeted to improve features of the neighborhood environment for PA.

  • 317.
    Adbo, Karina
    Linnaeus University, Faculty of Social Sciences, Department of Education.
    Hur ska vi skapa struktur och logik i kemiundervisningen?2014In: LMNT-nytt, ISSN 1402-0041, no 1, p. 28-32Article in journal (Other (popular science, discussion, etc.))
  • 318.
    Adbo, Karina
    Linnaeus University, Faculty of Science and Engineering, School of Natural Sciences.
    Relationships between models used for teaching chemistry and those expressed by students2012Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    This thesis is focused upon chemistry as a school subject and students' interpretations and use of formally introduced teaching models. To explore students' developing repertoire of chemical models, a longitudinal interview study was undertaken spanning the first year of upper secondary school chemistry. Matter in its different states was selected as the target framework for this study. The results presented are derived from both generalisations of groups of students as well as a case study describing an individual learner's interpretation of formal content. The results obtained demonstrated that the formal teaching models provided to the students included in this study were not sufficient to afford them a coherent framework of matter in its different states or for chemical bonding. Instead, students' expressed models of matter and phase change were to a high degree dependent on electron movement (Paper I), anthropomorphism (Paper II) and, for one student, a mechanistic approach based on small particles and gravitation (Paper III). The results from this study place focus on the importance of learners' prior learning (previous experiences) and the need to develop a coherent framework of formal teaching models for the nature of matter and phase change.

  • 319.
    Adbo, Karina
    et al.
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Andersson, Håkan S.
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Ankarloo, Jonas
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Karlsson, Jesper G.
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Norell, M C
    Olofsson, Linus
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Svenson, Johan
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Örtegren, U
    Nicholls, Ian A.
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Enantioselective synthetic receptors for Tröger’s base1999In: Bioorganic Chemistry, Vol. 27, no 5, p. 363-371Article in journal (Refereed)
  • 320.
    Adbo, Karina
    et al.
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Nicholls, Ian Alan
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Enantioselective SPE on Tröger’s base molecularly imprinted polymers2001Conference paper (Refereed)
  • 321.
    Adbo, Karina
    et al.
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Nicholls, Ian Alan
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Study of the kinetics of enantioselective solid-phase extraction on Tröger’s base molecularly imprinted polymers2001In: Analytica Chimica Acta, Vol. 435, p. 115-120Article in journal (Refereed)
  • 322.
    Adbo, Karina
    et al.
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Rosengren-Holmberg, Jenny
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Nicholls, Ian Alan
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Kinetics of enantioselective solid-phase extraction of Tröger’s base molecularly imprinted polymers2000Conference paper (Refereed)
  • 323.
    Adbo, Karina
    et al.
    Linnaeus University, Faculty of Science and Engineering, School of Natural Sciences.
    Taber, Keith
    Developing a way to view chemistry: a case study of one Swedish student’s rich conceptualisations to make sense of upper high school chemistryManuscript (preprint) (Other academic)
  • 324.
    Adbo, Karina
    et al.
    Linnaeus University, Faculty of Social Sciences, Department of Education.
    Taber, Keith
    University of Cambridge.
    Developing an Understanding of Chemistry: A case study of one Swedish student's rich conceptualisation for making sense of upper secondary school chemistry2014In: International Journal of Science Education, ISSN 0950-0693, E-ISSN 1464-5289, Vol. 36, no 7, p. 1107-1136Article in journal (Refereed)
    Abstract [en]

    In this paper, we report a case study of a 16-year-old Swedish upper secondary student's developing understanding of key concept areas studied in his upper secondary school chemistry course. This study illustrates how the thinking of an individual learner, Jesper, evolves over a school year in response to formal instruction in a particular educational context. Jesper presented a range of ideas, some of which matched intended teaching whilst others were quite inconsistent with canonical chemistry. Of particular interest, research data suggest that his initial alternative conceptions influenced his thinking about subsequent teaching of chemistry subject matter, illustrating how students' alternative conceptions interact with formal instruction. Our findings support the claims of some researchers that alternative conceptions may be stable and tenacious in the context of instruction. Jesper's rich conceptualisation of matter at submicroscopic scales drew upon intuitions about the world that led to teaching being misinterpreted to develop further alternative conceptions. Yet his intuitive thinking also offered clear potential links with canonical scientific concepts that could have been harnessed to channel his developing thinking. These findings support the argument that identifying students' intuitive thinking and how it develops in different instructional contexts can support the development of more effective science pedagogy.

  • 325.
    Adbo, Karina
    et al.
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Taber, Keith
    Learners' Mental Models of the Particle Nature of Matter: A study of 16-year-old Swedish science students2009In: International Journal of Science Education, ISSN 0950-0693, E-ISSN 1464-5289, Vol. 31, no 6, p. 757-786Article in journal (Refereed)
    Abstract [en]

    The results presented here derive from a longitudinal study of Swedish upper secondary science students' (16-19 years of age) developing understanding of key chemical concepts. The informants were 18 students from two different schools. The aim of the present study was to investigate the mental models of matter at the particulate level that learners develop. Data were collected using semi-structured interviews based around the students' own drawings of the atom, and of solids, liquids, and gases. The interview transcripts were analysed to identify patterns in the data that offer insight into aspects of student understanding. The findings are discussed in the specific curriculum context in Swedish schools. Results indicate that the teaching model of the atom (derived from Bohr's model) commonly presented by teachers and textbook authors in Sweden gives the students an image of a disproportionately large and immobile nucleus, emphasises a planetary model of the atom and gives rise to a chain of logic leading to immobility in the solid state and molecular breakdown during phase transitions. The findings indicate that changes in teaching approaches are required to better support learners in developing mental models that reflect the intended target knowledge.

  • 326.
    Adbo, Karina
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Vidal Carulla, Clara
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Designing play-based learning chemistry activities in the preschool environment2019In: Chemistry Education Research and Practice, ISSN 1756-1108, E-ISSN 1756-1108Article in journal (Refereed)
    Abstract [en]

    This study focuses on the design of play-based learning activities for chemistry in preschool. Viewing chemistry as a part of our past and present culture instead of as a subject, provides the backdrop for a more holistic approach to chemistry within this specific environment. A cultural-historical perspective, together with scaffolding, emergent science skills and sustained shared thinking, made up the framework for the design of the learning activities. Results show that when scaffolding and emergent science skills are used within the design, they provide good support for both the content and the teacher in the actual learning situation. Working with scaffolding was also beneficial for professional development. However, for a progressive and inclusive activity design, it is essential to take into account aspects of the immediate environment and methods for direct evaluation.

  • 327. Adcock, Edward P.
    et al.
    Varlamoff, Marie-Thérèse
    Kremp, Virginie
    IFLA-ina nacela za skrb i rukovanje knjiznicnom gradom: IFLA principles for the care and handling of library material2003Other (Other (popular science, discussion, etc.))
  • 328.
    Addassi, Mouadh
    et al.
    Technical University of Denmark, Denmark.
    Johannesson, Björn
    Linnaeus University, Faculty of Technology, Department of Building Technology.
    Wadsö, Lars
    Lund University.
    Inverse analyses of effective diffusion parameters relevant for a two-phase moisture model of cementitious materials2018In: Cement and Concrete Research, ISSN 0008-8846, E-ISSN 1873-3948, Vol. 106, p. 117-129Article in journal (Refereed)
    Abstract [en]

    Here we present an inverse analyses approach to determining the two-phase moisture transport properties re-levant to concrete durability modeling. The purposed moisture transport model was based on a continuumapproach with two truly separate equations for the liquid and gas phase being connected by the sorption ki-netics. The moisture properties of ten binder-systems containingfly ash, calcined clay, burnt shale and graymicro-filler, were investigated experimentally. The experiments used were, (i) sorption test (moisturefixation),(ii) cup test in two different relative humidity intervals, (iii) drying test, and, (iv) capillary suction test. Masschange over time, as obtained from the drying test, the two different cup test intervals and the capillary suctiontest, was used to obtain the effective diffusion parameters using the proposed inverse analyses approach. Themoisture properties obtained with the proposed inverse analyses method provide a good description of the testperiod for the ten different binder-systems.

  • 329.
    Addassi, Mouadh
    et al.
    Technical University of Denmark, Denmark.
    Schreyer, Lynn
    Washington State University, USA.
    Johannesson, Björn
    Linnaeus University, Faculty of Technology, Department of Building Technology.
    Lin, Hai
    University of Colorado Denver, USA.
    Pore-scale modeling of vapor transport in partially saturated capillary tube with variable area using chemical potential2016In: Water resources research, ISSN 0043-1397, E-ISSN 1944-7973, Vol. 52, no 9, p. 7023-7035Article in journal (Refereed)
    Abstract [en]

    Here we illustrate the usefulness of using the chemical potential as the primary unknown by modeling isothermal vapor transport through a partially saturated cylindrically symmetric capillary tube of variable cross-sectional area using a single equation. There are no fitting parameters and the numerical solutions to the equation are compared with experimental results with excellent agreement. We demonstrate that isothermal vapor transport can be accurately modeled without modeling the details of the contact angle, microscale temperature fluctuations, or pressure fluctuations using a modification of the Fick-Jacobs equation. We thus conclude that for a single, axisymmetric pore, the enhancement factor depends upon relative humidity boundary conditions at the liquid bridge interfaces, distance between liquid bridges, and bridge lengths.

  • 330.
    Adenier, Guillaume
    Växjö University, Faculty of Mathematics/Science/Technology, School of Mathematics and Systems Engineering.
    Local Realist Approach and Numerical Simulations of Nonclassical Experiments in Quantum Mechanics2008Doctoral thesis, monograph (Other academic)
    Abstract [en]

    Local Realist Approach and Numerical Simulations of Nonclassical Experiments in Quantum Mechanics was constructed.

  • 331.
    ADENIER, Guillaume
    Växjö University, Faculty of Mathematics/Science/Technology, School of Mathematics and Systems Engineering.
    Probabilistic Analysis of the EPR-Bohm Experiment2007Licentiate thesis, monograph (Other academic)
    Abstract [en]

    Bell's Theorem was developed on the basis of considerations

    involving a linear combination of spin correlation functions, each

    of which has a distinct pair of arguments. The simultaneous

    presence of these different pairs of arguments in the same

    equation is investigated, and the implicit counterfactual

    assumption in Bell's theorem is discussed.

    We show how an explicit contextuality can arise from a model

    displaying unfair sampling, and we discuss it in the

    framework of David Mermin's cleverly simple version of Bell's

    theore, which pinpoints in a very straightforward way how

    interpreting entanglement from a realistic point of view can be

    problematic. We present an extended version of Mermin's device

    that can actually be given a straightforward realistic

    interpretation.

    We stress that the low efficiency of detectors in all experiments

    with photons makes the use of the fair sampling assumption

    unavoidable. Since this very assumption is false in all existing

    local realistic models based on inefficient detection, we thus

    question its validity. We show that it is no more reasonable to

    assume fair sampling than it is impossible to test, and we

    actually propose an experimental test which would provides clear

    cut results in case of unfair sampling

    We then analyze optical EPR experimental data performed by Weihs et al in Innsbruck 1997-1998. We show that for some linear

    combinations of the raw coincidence rates, the experimental

    results display some anomalous behavior that a more general source state (like non-maximally entangled state) cannot

    straightforwardly account for. We use the fair sampling

    assumption, and assume explicitly that the detection efficiencies

    for the pairs of entangled photons can be written as a product of

    the two corresponding detection efficiencies for the single

    photons. We show that this explicit use of fair sampling cannot be

    maintained to be a reasonable assumption as it leads to an

    apparent violation of the no-signalling principle.

  • 332.
    Adenier, Guillaume
    et al.
    Växjö University, Faculty of Mathematics/Science/Technology, School of Mathematics and Systems Engineering.
    Khrennikov, Andrei
    Växjö University, Faculty of Mathematics/Science/Technology, School of Mathematics and Systems Engineering.
    Fair sampling and rotational invariance in EPR experiments2007In: The Nature of Light: What Are Photons?, 2007Conference paper (Other academic)
    Abstract [en]

    We have previously shown that the use of the fair sampling assumption in EPR experiments could be questioned on the basis of experimental data. We continue our analysis of the data from the optical EPR experimental performed by Weihs et al. in Innsbruck 1997-1998, and we discuss whether a non-rotationally invariant source can account for the experimental results.

  • 333.
    Adenier, Guillaume
    et al.
    Växjö University, Faculty of Mathematics/Science/Technology, School of Mathematics and Systems Engineering.
    Khrennikov, Andrei
    Växjö University, Faculty of Mathematics/Science/Technology, School of Mathematics and Systems Engineering.
    Fair Sampling vs No-Signalling Principle in EPR experiments2007In: Beyond the Quantum, World Scientific Publishing, Singapore , 2007, p. 181-187Conference paper (Other (popular science, discussion, etc.))
    Abstract [en]

    We present some recent results of a new statistical analysis of the optical EPR experiment performed by Weihs et al in Innsbruck 1997-1998. Under the commonly used assumption of fair sampling, we show that the coincidence counts exhibit a small and anomalous non-signalling component, which seems impossible to explain by using the conventional quantum mechanics, and we discuss some possible interpretations of this phenomenon.

  • 334.
    Adenier, Guillaume
    et al.
    Växjö University, Faculty of Mathematics/Science/Technology, School of Mathematics and Systems Engineering.
    Khrennikov, AndreiVäxjö University, Faculty of Mathematics/Science/Technology, School of Mathematics and Systems Engineering.
    Foundations of probability and Physics - 42007Conference proceedings (editor) (Refereed)
  • 335.
    Adenier, Guillaume
    et al.
    Växjö University, Faculty of Mathematics/Science/Technology, School of Mathematics and Systems Engineering. Mathematics.
    Khrennikov, Andrei
    Växjö University, Faculty of Mathematics/Science/Technology, School of Mathematics and Systems Engineering. Mathematics.
    Is the fair sampling assumption supported by EPR experiments?2007In: Journal of Physics B: At. Mol. Opt. Phys., ISSN 0953-4075, Vol. 40, no 1, p. 131-141Article in journal (Refereed)
    Abstract [en]

    We analyse optical EPR experimental data performed by Weihs et al in Innsbruck 1997–1998. We show that for some linear combinations of the raw coincidence rates, the experimental results display some anomalous behaviour that a more general source state (like non-maximally entangled state) cannot straightforwardly account for. We attempt to explain these anomalies by taking account of the relative efficiencies of the four channels. For this purpose, we use the fair sampling assumption, and assume explicitly that the detection efficiencies for the pairs of entangled photons can be written as a product of the two corresponding detection efficiencies for the single photons. We show that this explicit use of fair sampling cannot be maintained to be a reasonable assumption as it leads to an apparent violation of the no-signalling principle.

  • 336.
    Adenier, Guillaume
    et al.
    INRiM, Italy.
    Khrennikov, Andrei
    Linnaeus University, Faculty of Technology, Department of Mathematics.
    Test of the no-signaling principle in the Hensen loophole-free CHSH experiment2017In: Fortschritte der Physik, ISSN 0015-8208, E-ISSN 1521-3978, Vol. 65, no 9, article id 1600096Article in journal (Refereed)
    Abstract [en]

    We analyze the data from the loophole-free CHSH experiment performed by Hensen et al., and show that it is actually not exempt of an important loophole. By increasing the size of the sample of event-ready detections, one can exhibit in the experimental data a violation of the no-signaling principle with a statistical significance at least similar to that of the reported violation of the CHSH inequality, if not stronger. The data from the loophole-free CHSH experiment performed by Hensen et al. are analysed, It is shown that it is actually not exempt of an important loophole. By increasing the size of the sample of event-ready detections, one can exhibit in the experimental data a violation of the no-signaling principle with a statistical significance at least similar to that of the reported violation of the CHSH inequality, if not stronger.

  • 337.
    Adenier, Guillaume
    et al.
    Tokyo University of Science, Japan.
    Khrennikov, Andrei
    Linnaeus University, Faculty of Science and Engineering, School of Computer Science, Physics and Mathematics.
    Watabanabe, Noboru
    Tokyo University of Science, Japan.
    A Fair sampling test for Ekert protocol2011In: Quantum Bio-inforamtics IV: From Quantum Information to BioInformatics / [ed] Luigi Accardi, Wolfgang Freudenberg, Masanori Ohya, World Scientific, 2011, p. 403-412Chapter in book (Refereed)
  • 338.
    Adenier, Guillaume
    et al.
    Oslo University.
    Ohya, Masanori
    Tokyo University of Science.
    Watanabe, Noboru
    Tokyo University of Science.
    Basieva, Irina
    Linnaeus University, Faculty of Science and Engineering, School of Computer Science, Physics and Mathematics.
    Khrennikov, Andrei
    Linnaeus University, Faculty of Science and Engineering, School of Computer Science, Physics and Mathematics.
    Double Blinding-Attack on Entanglement-Based Quantum Key Distribution Protocols2012In: AIP Conference Proceedings, ISSN 0094-243X, E-ISSN 1551-7616, Vol. 1424, no 1, p. 9-16Article in journal (Refereed)
    Abstract [en]

    We propose a double blinding-attack on entangled-based quantum key distribution protocols. The principle of the attack is the same as in existing blinding attack except that instead of blinding the detectors on one side only, Eve is blinding the detectors of both Alice and Bob. In the BBM92 protocol, the attack allows Eve to get a full knowledge of the key and remain undetected even if Alice and Bob are using 100% efficient detectors. The attack can be easily extended to Ekert protocol, with an efficiency as high as 85.3%.

  • 339.
    Adenier, Guillaume
    et al.
    University of Oslo, Norway.
    Watanabe, Noboru
    Tokyo University of Science, Japan.
    Basieva, Irina
    Linnaeus University, Faculty of Technology, Department of Mathematics.
    Khrennikov, Andrei
    Linnaeus University, Faculty of Technology, Department of Mathematics.
    Multiple-photon absorption attack on entanglement-based quantum key distribution protocols2013In: Quantum Bio-Informatics V: Proceedings of the Quantum Bio-Informatics 2011 : Tokyo University of Science, Japan, 7 – 12 March 2011 / [ed] Luigi Accardi, Wolfgang Freudenberg, Masanori Ohya, Singapore: World Scientific, 2013, vol. 30, p. 171-180Conference paper (Refereed)
    Abstract [en]

    We propose a multiple-photon absorption attack on Quantum Key Distribution protocols. In this attack, the eavesdropper (Eve) is in control of the source and sends pulses correlated in polarization (but not entangled) containing several photons at frequencies for which only multiple-photon absorptions are possible in Alice's and Bob's detectors. Whenever the number of photons from one pulse are dispatched in insufficient number to trigger a multiple-photon absorption in either channel, the pulse remains undetected. We show that this simple feature is enough to reproduce the type of statistics on the detected pulses that are considered as indicating a secure quantum key distribution in entangled-based protocols, even though the source is controlled by Eve, and we discuss possible countermeasures.

  • 340.
    Adeniji, Anna
    Linköpings universitet, Filosofiska fakulteten.
    Alla säger I Love You: Om orden som gör känslor och känsliga formuleringar.2007In: Bang : feministisk kulturtidskrift, ISSN 1102-4593, Vol. 3, p. 91-93Article in journal (Other (popular science, discussion, etc.))
    Abstract [sv]

    Artikeln handlar om hur orden "jag älskar dig" respektive "I love you" får betydelse både personligt, socialt och politiskt. Exempel hämtas från tv-serierna "Förhäxad" och "Sex and the City" och författaren resonerar kring hur orden skapar affektiva betydelser i kropp och genuspositioner. 

  • 341.
    Adeniji, Anna
    Södertörns högskola.
    Being and Becoming Mixed Race, Black, Swedish and a Nomadic Subject2013In: Afro-Nordic landscapes: Equality and Race in Northern Europe / [ed] Michael McEachrane, New York: Routledge, 2013Chapter in book (Other academic)
  • 342.
    Adeniji, Anna
    Södertörns högskola ; Linköpings universitet.
    Därför gifter sig feminister2009In: Arena, ISSN 1652-0556, no 5, p. 40-43Article in journal (Other (popular science, discussion, etc.))
    Abstract [sv]

    Äktenskapet står starkt som juridiskt skydd i Sverige, samtidigt som man fokuserar på jämställdhet och allas lika värde. Kungahuset ordnar bröllop med jämlik aura. Har kritiken av äktenskapet glömts bort?

  • 343.
    Adeniji, Anna
    Linköpings universitet, Tema Genus.
    Inte den typ som gifter sig?: Feministiska samtal om äktenskapsmotstånd2008Doctoral thesis, monograph (Other academic)
    Abstract [en]

    Den här avhandlingen undersöker frågan om äktenskapsmotstånd i dagens svenska samhälle, media och kultur. Boken belyser olika sätt att uttrycka äktenskapsmotstånd och vad det betyder att formulera feministisk kritik av normerande familjevärderingar.

    Undersökningen baseras på etnografi och kritisk kulturanalys och granskar synen på äktenskap, relationer och familj som ett kulturellt imaginärt fält. Det empiriska materialet består av intervjuer med kvinnor som inte har velat gifta sig, liksom ett brett material från tv, webbsidor, dagstidningar, skvallerpress och bloggar.

    I avhandlingen genomförs och presenteras en feministisk metodologisk process, grundat i akademiskt kreativt och självreflexivt skrivande. Detta innebär att skrivprocessen, textformatet, liksom minnesarbete, olika intervjutekniker och andra kreativa analytiska praktiker är en del av det metodologiska ramverket.

    De teoretiska perspektiven som ligger till grund för denna studie består av flera feministiska strömningar: radikalfeminism, queerfeminism, liberealfeminism, anarkafeminism och ett socialt rättviseperspektiv. De belyser, på olika sätt, intersektioner mellan äktenskap, genus, sexualitet, nationalitet, klass och makt. En gemensam utgångspunkt är att identitetskategorier, möjligheter att agera liksom vår plats i världen är konstruerade av maktrelationer och normativa föreställningar om genus. Dessa perspektiv tillhandahåller analytiska verktyg för att diskutera och dekonstruera kulturella föreställningar om äktenskap och äktenskapsmotstånd.

  • 344.
    Adeniji, Anna
    Södertörns högskola, Genusvetenskap.
    "Jag har aldrig sett dig som svart": Anna Adeniji läser Sara Ahmed2010In: Tidskrift för Genusvetenskap, ISSN 1654-5443, E-ISSN 2001-1377, no 1/2, p. 83-87Article in journal (Other academic)
  • 345.
    Adeniji, Anna
    Linköpings universitet, Filosofiska fakulteten.
    När Brad och Angelina inte ville gifta sig: En berättelse om heterosexuell melankoli och politiska beslut i vardagen.2007In: Bang : feministisk kulturtidskrift, ISSN 1102-4593, Vol. 1, p. 39-41Article in journal (Other (popular science, discussion, etc.))
    Abstract [sv]

     Artikeln handlar om skvallerpressens representation av celebriteterna Brad Pitt och Angelina Jolie, och hur deras icke-gifta status producerar moralpanik och genusproblem i den populärkulturella heteronormativiteten. Artikeln tar också upp "äktenskapsfrågan" i en svensk kontext och hur frågan om äktenskapsmotstånd glömts bort av feminismen.  

  • 346.
    Adeniji, Anna
    Linköpings universitet, Filosofiska fakulteten.
    Ordningsstörande begär: biteori som kritik av antropologisk sexualitetsforskning.2001In: Lambda Nordica: Tidskrift om homosexualitet, ISSN 1100-2573, Vol. 5 1/2, no Både och/ och/ varken eller, p. 54-69Article in journal (Other academic)
  • 347.
    Adeniji, Anna
    Södertörns högskola, Genusvetenskap.
    [Recension av] Tove Ingebjørg Fjell: Å si til meningen med livet? En kulturvitenskapelig analyse av barnfrihet2010In: Tidsskrift for kjønnsforskning, ISSN 0809-6341, E-ISSN 1891-1781, no 1, p. 175-179Article, book review (Other academic)
  • 348.
    Adeniji, Anna
    Linnaeus University, Faculty of Social Sciences, Department of Social Studies.
    Royal Love: Gender, Power, and National Identity in the Swedish Crown Princess Wedding2014In: Love: A Question for Feminism in the Twenty-First Century / [ed] Anna G. Jónasdóttir and Ann Ferguson, New York and London: Routledge, 2014, p. 48-62Chapter in book (Other academic)
  • 349.
    Adeniji, Anna
    Södertörns högskola, Genusvetenskap.
    The royal wedding as true love story.: Emotional politics intersecting culture, nationalism, modernity and heteronormality2010In: GEXcel work in progress report. Vol. 8: Proceedings from GEXcel theme 10 : Love in our time - a question for feminism : spring 2010 / [ed] Sofia Strid, Anna G. Jónasdóttir, Linköping: Institute of Thematic Gender Studies, Department of Gender Studies, Linköping University , 2010, p. 85-92Conference paper (Other academic)
  • 350.
    Adetorp, Johan
    Linnaeus University, Faculty of Arts and Humanities, Department of Cultural Sciences.
    Celt and Germans in Iron Age Europe: Imagined Communities and strategies among scholars2015In: Concurrences in postcolonial research - perspectives, methodologies, engagements, 20-23 aug, Kalmar, 2015Conference paper (Other academic)
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