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  • 1051. Tessier, L
    et al.
    Boisvert, J L
    Vought, Lena B. M.
    Lunds universitet.
    Lacoursière, Jean O.
    Lunds universitet.
    Anomalies on capture nets of Hydropsyche slossonae larvae (Trichoptera; Hydropsychidae) following a sublethal chronic exposure to cadmium2000In: Environmental Pollution, ISSN 0269-7491, E-ISSN 1873-6424, Vol. 108, no 3, p. 425-438Article in journal (Refereed)
    Abstract [en]

    A laboratory study on the sublethal effects of cadmium (Cd) on the net-spinning process of the larvae of Hydropsyche slossonae was conducted in order to assess the potential of net anomalies as an indicator of chronic exposure to Cd. Two major anomalies with different frequency levels were identified after chronic exposure to 0.37, 1.2, 11.6, 21.4 and 43.3 μg l−1 of Cd. The first was a distortion of the midline meshes where the diamond-shape structure is disrupted and the meshes are separated by extra strands (called ‘midline’ anomaly). The second aberration consisted of a distortion of the rectilinear structure of net opening by strands being fused or added over the meshes (called ‘crossover’ anomaly). The midline distortion may be linked to a physiological stress caused by Cd, which can affect the control of the net-spinning process. It was not possible to relate the crossover aberrations to a specific toxic action of Cd, but data indicated that both anomalies are independent from each other and that two modes of action could be implicated. Protein analyses of capture nets have revealed silk polypeptide modifications at the highest Cd concentration tested, indicating a possible effect of Cd interaction with silk proteins. However, neither a gradient-concentration nor a time-dependent response could be established with both aberration frequencies. Silk protein modifications would rather play a secondary role in the appearance of both net anomalies, and mostly at a high concentration level. Finally, the toxicity curves (EC50) show that the sensitivity threshold for both types of aberration ranged from 1 to 5 μg l−1 which is highly sensitive compared with other sublethal effects of Cd on other macroinvertebrate species. Hence, the use of capture-net anomalies of hydropsychid larvae would represent a valuable indicator of sublethal toxicity induced by Cd and possibly by other metals in running waters.

  • 1052. Tessier, L
    et al.
    Boisvert, J L
    Vought, Lena B. M.
    Lunds universitet.
    Lacoursière, Jean O.
    Lunds universitet.
    Effects of 2,4-dichlorophenol on the net-spinning behavior of Hydropsyche slossonae larvae (Trichoptera; Hydropsychidae), an early warning signal of chronic toxicity2000In: Ecotoxicology and Environmental Safety, ISSN 0147-6513, E-ISSN 1090-2414, Vol. 46, no 2, p. 207-217Article in journal (Refereed)
    Abstract [en]

    In order to assess the potential of hydropsychid capture net anomalies as a bioindicator of chronic toxicity in streams and rivers, the effects of 2,4-dichlorophenol (2,4-DCP) exposure on the net-spinning behavior of Hydropsyche slossonae were examined for anomalies after 0, 5, 10, 15, and 20 exposure days to gradient concentration of 2,4-dichlorophenol. The net-spinning behavior was significantly affected when larvae were exposed to 1.0, 10, 25, and 50 μg·L−1, as expressed by the occurrence of two distinct abnormalities. The first one was a distortion of the midline meshes, where the normal diamond-shape structure is disrupted and the meshes are separated by extra strands (called “midline” anomaly). The second aberration observed was called “chaotic” net, where the nets are highly irregular without any real structure or well-defined areas. A good correlation was found between the chaotic net frequencies and the reduction of ATP concentrations in the larvae, indicating possible uncoupling effects of 2,4-DCP on the oxidative phosphorylation process. Toxicity curves demonstrate that the sensitivity threshold of chaotic net frequencies ranged from 3.5 to 7 μg·L−1, which is highly sensitive compared with other sublethal effects of 2,4-DCP on other aquatic species.

  • 1053. Tessier, Louis
    et al.
    Boisvert, Jacques L.
    Vought, Lena B. M.
    Lunds universitet.
    Lacoursière, Jean O.
    Lunds universitet.
    Anomalies on capture nets of Hydropsyche slossonae larvae (Trichoptera; Hydropsychidae), a potential indicator of chronic toxicity of malathion (organophosphate insecticide)2000In: Aquatic Toxicology, ISSN 0166-445X, E-ISSN 1879-1514, Vol. 50, no 1-2, p. 125-139Article in journal (Refereed)
    Abstract [en]

    A laboratory study on the sublethal effects of malathion on the net-spinning behavior of the caddisfly larvae Hydropsycheslossonae was conducted in order to assess the potential of net anomalies as an indicator of chronic exposure to organophosphorus insecticides. Two anomalies were identified after chronic exposure to 0.01, 0.05, 0.1, 0.5 and 1.0 μg l−1 malathion. The first was a distortion of the midline meshes where the normal diamond shape structure was disrupted and the meshes were separated by extra strands (called ‘midline’ anomaly). The second aberration observed was a significant decrease in net symmetry. Both anomalies were highly correlated to the toxic action of malathion, i.e. inhibition of the acetylcholinesterase enzyme (AChE). Sodium dodecyl sulfate-polyacrylamide gel electrophoresis analyses of capture nets did not show any modification of silk polypeptides after exposure to malathion, indicating that net distortions were not related to silk composition. Both anomalies seem to represent the symptoms of the specific toxic action of malathion; nevertheless, they can serve as an index of the physiological condition of the larvae, especially the midline anomaly. The symmetry of the nets decreased significantly after exposure to 0.5 and 1.0 μg l−1. However, the toxicity curves (EC50) showed that the sensitivity threshold for the midline anomaly ranged from 0.11 to 0.28 μg l−1, which reflect more realistic exposure to concentrations expected to occur in the field. Hence, the use of capture net anomalies of hydropsychid larvae could represent a valuable indicator of sublethal toxicity induced by malathion and other organophosphorus insecticides in running waters.

  • 1054. Tessier, Louis
    et al.
    Boisvert, Jacques L.
    Vought, Lena B. M.
    Lunds universitet.
    Lacoursière, Jean O.
    Lunds universitet.
    Characterization of Hydropsyche slossonae (Trichoptera: Hydropsychidae) capture net polypeptides2000In: Canadian Entomologist, ISSN 0008-347X, E-ISSN 1918-3240, Vol. 132, no 1, p. 59-68Article in journal (Refereed)
    Abstract [en]

    A laboratory study on the sublethal effects of malathion on the net-spinning behavior of the caddisfly larvae Hydropsycheslossonae was conducted in order to assess the potential of net anomalies as an indicator of chronic exposure to organophosphorus insecticides. Two anomalies were identified after chronic exposure to 0.01, 0.05, 0.1, 0.5 and 1.0 μg l−1 malathion. The first was a distortion of the midline meshes where the normal diamond shape structure was disrupted and the meshes were separated by extra strands (called ‘midline’ anomaly). The second aberration observed was a significant decrease in net symmetry. Both anomalies were highly correlated to the toxic action of malathion, i.e. inhibition of the acetylcholinesterase enzyme (AChE). Sodium dodecyl sulfate-polyacrylamide gel electrophoresis analyses of capture nets did not show any modification of silk polypeptides after exposure to malathion, indicating that net distortions were not related to silk composition. Both anomalies seem to represent the symptoms of the specific toxic action of malathion; nevertheless, they can serve as an index of the physiological condition of the larvae, especially the midline anomaly. The symmetry of the nets decreased significantly after exposure to 0.5 and 1.0 μg l−1. However, the toxicity curves (EC50) showed that the sensitivity threshold for the midline anomaly ranged from 0.11 to 0.28 μg l−1, which reflect more realistic exposure to concentrations expected to occur in the field. Hence, the use of capture net anomalies of hydropsychid larvae could represent a valuable indicator of sublethal toxicity induced by malathion and other organophosphorus insecticides in running waters.

  • 1055.
    Tholin, Måns
    Kristianstad University, School of Education and Environment.
    Uppföljning av 4 skånska kommuners miljökonsekvensbeskrivningar: en studie av detaljplaner2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    In 2004, a provision was introduced into the Environmental Code, which states that the plans and programs that may lead to significant environmental impact should be tested through an environmental impact assessment. This study focuses on what happens after such a description has been made. Is there anyone monitoring the real impact? And if so, in what regard?By reviewing environmental impact assessments made of Detailed Development Plans, as well as interviews with the municipalities concerned, I wanted to answer the question of municipalities actually live up to the legislative requirements, and how is monitoring sections written in the EIA's. The results show varying quality regarding monitoring sections in the EIA´s and almost non-existent follow-up work after the plan has been prepared.The municipalities that were interviewed all thought that the follow up idea was good, but in practice difficult. The reasons for this are that the law is poorly precise; there is a lack of resources or that the responsibilities within the organization can be a problem according to the municipalitiesOne of the solutions to this problem may be a reporting requirement against the municipalities, as this usually leads to an expanded and more focused work.

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  • 1056.
    Thorsén, Andreas
    Kristianstad University, Faculty of Business.
    Digital Design för att främja kommunikation i astmavård: Hur digitala tjänster genom individanpassad information kan komplettera och främja vårdmötet2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    In Sweden, 800,000 persons are estimated to live with asthma. There is an ongoing digitization work in the country, to make healthcare more accessible to patients through the use of e-services. E-services intended for asthma care have shown difficulties in promoting communication between patients and the caregiver. E-services have not been considered able to replace the personal contact that a healthcare meeting between the patient and the caregiver offers. Lack of contact with the healthcare can lead to gradual deterioration of asthma symptoms not being detected. It can also lead to a patient-perceived lack of social support, which can lead to poorer mental health for the patient. To explore how e-services for asthma care can be designed in order to, through individualized information, promote and maintain communication between patient and the healthcare provider, in support of good care and patient health, a study divided into three steps has been carried out. The study began with a literature search, was followed by an interview study with open interviews and ended in a concept-driven design process. The interviews were analyzed against previous theories and used together with these as the basis for creating a design concept intended to promote and maintain communication between the patient and the caregiver in asthma care. The design concept, "Astmaportalen” (“The Asthma Portal"), was iteratively created through a concept-driven design method which involved asthma care personnel, asthma patients and informatics students. The concept was manifested in the form of a digital prototype. Evaluations with asthma care personnel and asthma patients demonstrated that the design concept could make a useful contribution to a symbiosis of healthcare meetings on site and digital solutions.

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  • 1057.
    Thulin, Susanne
    et al.
    Kristianstad University, Research environment Learning in Science and Mathematics (LISMA). Kristianstad University, School of Education and Environment, Avdelningen för Pedagogik.
    Åkerblom, Annika
    Göteborgs universitet.
    Vikström, Anna
    Luleå tekniska universitet.
    Naturvetenskap i förskoleperspektiv: kreativa utvecklingsprocesser2016Conference paper (Other academic)
  • 1058.
    Thuresson, Frida
    et al.
    Kristianstad University, School of Education and Environment.
    Nilsson, Dennis
    Kristianstad University, School of Education and Environment.
    Kulturreliktväxternas livskraft: en jämförelse mellan växtinventeringar av ödeträdgårdar i Skåne och Blekinge2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Växter som kan nyttjas till vår fördel har utvecklats under en lång tid. Från bondestenåldern när kontrollen över skörden växer fram till att mer avancerade trädgårdar med kulturreliktväxter blomstrar upp i 1800-talets bondesamhälle. Syftet med arbetet är att jämföra kulturreliktväxter på torp och gårdslämningar i Hässleholms kommun. Även data från tidigare studier användes för att undersöka skillnaden mellan gårdar och torp samt undersöka om övergivnadsåret påverkar antalet kulturväxter som finns kvar. Övergivna gårdar hyste fler kulturväxter än övergivna torp och gårdarna hade fler träd och buskar än torpen. Torparen ville troligtvis ha växter med snabb avkastning och hade varken råd eller tid med prydnadsbuskar eller att plantera fruktträd som behöver flera år på sig att ge frukt. Övergivnadsåret påverkar inte artantalet och kanske att markanvändningen av platsen spelar en större roll än övergivnadsåret. Vi tycker att det gröna kulturarvet behövs lyftas fram tydligare då bevarandet av kulturväxter och deras historia är viktig. 

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  • 1059.
    Thyr, Maria
    Kristianstad University, School of Education and Environment. Helgeå Model Forest.
    Kartläggning av ädellövskog i Helgeåns avrinningsområde: skyddsvärda områden idag och i framtiden2017Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
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  • 1060.
    Tjärnemo, Heléne
    et al.
    Kristianstad University, School of Health and Society, Avdelningen för Ekonomi.
    Södahl, Liv
    Naturskyddsföreningen.
    Swedish food retailers promoting climate smarter food choices: trapped between visions and reality?2015In: Journal of Retailing and Consumer Services, ISSN 0969-6989, E-ISSN 1873-1384, Vol. 24, p. 130-139Article in journal (Refereed)
    Abstract [en]

    Food retailers are important actors in the development of a more environmentally sustainable food system. They are powerful in their procurement role and have the potential to promote and encourage consumers to buy climate smarter food. While food retailers have developed environmental visions, policies and goals, a major question is to what extent these commitments translate into action in the products sourced and promoted. This paper aims to explore the ways and extent to which food retailers assist consumers to make climate smarter food choices, more specific to reduce their meat consumption, and to identify potential and perceived difficulties towards doing this. The empirical data is based on interviews with 17 Swedish food retail representatives. The findings indicate that food retailers address climate change in their environmental policy statements and have environmental targets for retail operations, such as energy and transport efficiency and recycling of waste. Moreover, retailers promote and encourage consumers to buy organic, local, and seasonal food and to minimize food waste. No initiatives are taken to help consumers reduce their meat consumption. Yet, there is a growing consensus among scientists that meat production is a large contributor to greenhouse gas emissions. Food retailers seem reluctant to guide consumers to climate smarter food choices if it means reducing the meat range or the promotion of meat. To broaden the range of high quality and more expensive meat is seen as a more feasible option. The meat category is perceived as important to attract new and keep loyal customers.

  • 1061.
    Tolf, Conny
    et al.
    Centre for Ecology and Evolution in Microbial Model Systems (EEMiS), Linnaeus University, Kalmar.
    Latorre-Margalef, Neus
    Centre for Ecology and Evolution in Microbial Model Systems (EEMiS), Linnaeus University, Kalmar.
    Wille, Michelle
    Centre for Ecology and Evolution in Microbial Model Systems (EEMiS), Linnaeus University, Kalmar.
    Bengtsson, Daniel
    Centre for Ecology and Evolution in Microbial Model Systems (EEMiS), Linnaeus University, Kalmar.
    Gunnarsson, Gunnar
    Kristianstad University, School of Education and Environment, Avdelningen för Naturvetenskap. Kristianstad University, Forskningsmiljön Man and Biosphere Health (MABH).
    Grosbois, Vladimir
    Centre de coopération Internationale en Recherche Agronomique pour le Développement (CIRAD), Montpellier.
    Hasselquist, Dennis
    Department of Biology, Lund University.
    Olsen, Björn
    Department of Medical Sciences, Uppsala University.
    Elmberg, Johan
    Kristianstad University, School of Education and Environment, Avdelningen för Naturvetenskap. Kristianstad University, Forskningsmiljön Man and Biosphere Health (MABH).
    Waldenström, Jonas
    Centre for Ecology and Evolution in Microbial Model Systems (EEMiS), Linnaeus University, Kalmar.
    Individual variation in influenza A virus infection histories and long-term immune responses in mallards2013In: PLoS ONE, ISSN 1932-6203, E-ISSN 1932-6203, Vol. 8, no 4, p. e61201-Article in journal (Refereed)
    Abstract [en]

    Wild dabbling ducks (genus Anas) are the main reservoir for influenza A virus (IAV) in the Northern Hemisphere. Current understanding of disease dynamics and epidemiology in this virus-host system has primarily been based on populationlevel ,surveillance studies and infection experiments conducted in laboratory settings. Using a combined experimentalnatural approach with wild-strain captive mallards (Anas platyrhynchos), we monitored individual IAV infection histories and immunological responses of 10 birds over the course of 15 months. This is the first detailed study to track natural IAV infection histories over several seasons amongst the same individuals growing from juvenile to adults. The general trends in the infection histories of the monitored birds reflected seasonal variation in prevalence at the population level. However, within the study group there were significant differences between individuals in infection frequency as well as in short and long term anti-IAV antibody response. Further observations included individual variation in the number of infecting virus subtypes, and a strong tendency for long-lasting hemagglutinin-related homosubtypic immunity. Specifically, all infections in the second autumn, except one, were of different subtypes compared to the first autumn. The variation among birds concerning these epidemiologically important traits illustrates the necessity for IAV studies to move from the level of populations to examine individuals in order to further our understanding of IAV disease and epidemiology.

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  • 1062.
    Trobro, Stefan
    et al.
    Uppsala University.
    Åqvist, Johan
    Uppsala University.
    Mechanism of the translation termination reaction on the ribosome2009In: Biochemistry, ISSN 0006-2960, E-ISSN 1520-4995, Vol. 48, no 47, p. 11296-303Article in journal (Refereed)
    Abstract [en]

    Ribosomal release factors (RFs) catalyze the termination of protein synthesis by triggering hydrolysis of the peptidyl-tRNA ester bond in the peptidyl transferase center of the ribosome. With new medium-resolution crystallographic structures of RF-ribosome complexes available, it has become possible to examine the detailed mechanism of this process to resolve the key factors responsible for catalysis of the termination reaction. Here, we report computer simulations of the termination reaction that utilize both the new RF complex structures and information from a high-resolution complex with a P-site substrate analogue. The calculations yield a consistent reaction mechanism that reproduces experimental rates and allows us to identify key interactions responsible for the catalytic efficiency. The results are also in general agreement with an earlier model based on molecular docking. The methylated glutamine residue of the universally conserved GGQ motif plays a key role in the hydrolysis reaction by orienting the water nucleophile and by stabilizing the transition state, and its side chain makes an entropic contribution to the lowering of the activation barrier. Two additional water molecules interacting with the P-site substrate are also found to be critically important. Furthermore, the 2'-OH group of the peptidyl-tRNA substrate is predicted to act as a proton shuttle for the leaving group in analogy with the consensus mechanism for peptidyl transfer. Thus, the ribosome's ability to catalyze both the termination (hydrolysis) and peptidyl transfer (aminolysis) reactions is largely explained by this type of unified mechanism, with similar transition states occurring in both processes.

  • 1063.
    Turesson, Jesper
    Kristianstad University, School of Health and Society.
    Kristianstad Studentkårs Android Applikation2013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

     This degree project deals with an Android application that has been made available to Kristianstad Student Union. The main objective of this work was to create a communicative simplicity between students and Kristianstad Student Union at Kristianstad University. The second objective was to try and make the application entertaining, based on interviews with users.

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  • 1064.
    Turk, Valentina
    et al.
    Marine Biological Station, Institute of Biology,Piran, Slovenia.
    Rehnstam, Ann-Sofi
    Department of Microbiology, University of Umeå.
    Lundberg, Erik
    Umeå Marine Sciences Centre, University of Umeå.
    Hagström, Åke
    Department of Microbiology, University of Umeå.
    Release of bacterial DNA by marine nanoflagellates, an intermediate step in phosphorus regeneration1992In: Applied and Environmental Microbiology, ISSN 0099-2240, E-ISSN 1098-5336, Vol. 58, no 11, p. 3744-3750Article in journal (Refereed)
    Abstract [en]

    The concentrations of dissolved DNA and nanoflagellates were found to covary during a study of diel dynamics of the microbial food web in the Adriatic Sea. This observation was further investigated in a continuous seawater culture when nanoflagellates were fed bacteria grown in filtered seawater. Analysis of dissolved organic phosphorus and dissolved DNA showed a sixfold increase of dissolved DNA in the presence of the nanoflagellates (Ochromonas sp.). The amount of DNA released suggested that the majority of the consumed bacterial DNA was ejected. Phagotrophic nanoflagellates thus represent an important source of origin for dissolved DNA. The rate of breakdown of dissolved DNA and release of inorganic phosphorus in the pelagic ecosystem is suggested to be dependent on the ambient phosphate pool. In the P-limited northern Adriatic Sea, rapid degradation of the labelled DNA could be demonstrated, whereas the N-limited southern California bight water showed a much lower rate. Phosphorus originating from dissolved DNA was shown to be transferred mainly to organisms in the <3-μm-size fractions. On the basis of the C/P ratios, we suggest that a significant fraction of the phosphorus demand by the autotrophs may be sustained by the released DNA during stratified conditions. Thus, the nucleic acid-rich bacterial biomass grazed by protozoa plays an important role in the biogeochemical cycling of phosphorus in the marine environment.

  • 1065.
    Tuvendal, Magnus
    et al.
    Stockholm University.
    Elmberg, Johan
    Kristianstad University, Research environment Man & Biosphere Health (MABH). Kristianstad University, School of Education and Environment, Avdelningen för Naturvetenskap.
    A handshake between markets and hierarchies: geese as an example of successful collaborative management of ecosystem services2015In: Sustainability, ISSN 2071-1050, E-ISSN 2071-1050, Vol. 7, no 12, p. 15937-15954Article in journal (Refereed)
    Abstract [en]

    An important task in research about natural resource management is to communicate the utility of different approaches from various settings. Using ecosystem services as a conceptual frame, we study a local solution to alleviate goose-human conflicts in an agricultural region in Sweden. Increasing goose numbers and crop damage led to the foundation of a goose management group (GMG), comprising landowners, farmers, hunters, ornithologists, conservation NGOs, and local and county level administration. The GMG was not given any formal or legal authority. We asked: is this management solution successful? Which problems can be solved and which remain? Can the GMG stand as a model for management of other species and in other landscapes? We interviewed present members of the GMG and analyzed minutes from its meetings. We found that the GMG has autonomy to self-organize and shows adaptive capacity over time in handling variability and complexity in its socio-ecological system. This makes the GMG a sustainable solution for local management of a resource in which goose population growth and legislation are decided at other (national or international) levels. We assessed what constitutes perceived success and found that GMG is geared toward “mediation of opposing preferences” by establishing a figurative handshake between stakeholders. By comparing how four general challenges in ecosystem service management align with formative attributes of the GMG, we discuss in which ways this management solution is applicable to other ecosystem services in other contexts.

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  • 1066.
    Törnberg, Michael
    et al.
    Kristianstad University, School of Health and Society.
    Eric, Karlsson
    Kristianstad University, School of Health and Society.
    Mobilapplikationer som hjälpmedel i underhållsindustrin: med fokusering på arbetsorderhantering2012Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This thesis paper discusses the results of a survey which was conducted to investigate the potential usefulness of mobile apps in the maintenance department at Perstorp Specialty Chemicals AB. The paper contains four sections, a theory section, a method section , a section that explains the functionality of the app, and finally a results section where the results and conclusions of the survey are discussed. The theory section explains and discusses relevant terminology used in the computer science field and in the maintenance industry. The theoretical model used in this paper is also discussed. The methods section gives a stepwise description of the project and a description of platform and software used. In addition, the calculation models and survey techniques utilized are presented. The app section gives a thorough description of the app and its functions. Finally, results, conclusions and suggestions for future work are presented.

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  • 1067.
    Ulvholt, Mikael
    Kristianstad University College, Department of Mathematics and Science.
    Bottensedimentets betydelse för flodpärlmusslans föryngring – en metodutveckling 2005Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [sv]

    The freshwater pearl mussel Margaritifera margaritifera is an endangered species. To survive, the young mussels demand a fairly coarse bottom material containing an appropriate quantity of organic substrate to survive without suffocating. In order to estimate if a bottom is suitable for juvenile mussels, samples of the sediment are needed. To obtain samples a sampling device called the Mulv collector has been developed within this project. Bottom samples were collected from 18 stations in 4 south Swedish streams, Vramsån, Kling-storpsbäcken, Brönnestadsån and Bräkneån. No rejuvenation of the mussel was found at the stations containing more than 25% fine material.

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  • 1068. Van der Mei, Rob
    et al.
    Van den Berg, Hans
    Ganchev, Ivan
    Tutschku, Kurt
    Leitner, Philipp
    Lassila, Pasi
    Burakowski, Wojciech
    Liberal, Fidel
    Arvidsson, Åke
    Kristianstad University, Faculty of Natural Science, Avdelningen för datavetenskap. Peter Key.
    Hoβfeld, Tobias
    Wac, Katarzyna
    Melvin, Hugh
    Galinac Grbac, Tihana
    Yoram, Haddad
    Key, Peter
    State of the art and research challenges in the area of autonomous control for a reliable internet of services2018In: Autonomous control for a reliable internet of services: methods, models, approaches, techniques, algorithms, and tools / [ed] Ivan Ganchev, R. D. van der Mei, Hans van den Berg, Springer Open , 2018, p. 1-22Chapter in book (Other academic)
    Abstract [en]

    The explosive growth of the Internet has fundamentally changed the global society. The emergence of concepts like service-oriented architecture (SOA), Software as a Service (SaaS), Platform as a Service (PaaS), Infrastructure as a Service (IaaS), Network as a Service (NaaS) and Cloud Computing in general has catalyzed the migration from the information-oriented Internet into an Internet of Services (IoS). This has opened up virtually unbounded possibilities for the creation of new and innovative services that facilitate business processes and improve the quality of life. However, this also calls for new approaches to ensuring quality and reliability of these services. The goal of this book chapter is to first analyze the state-of-the-art in the area of autonomous control for a reliable IoS and then to identify the main research challenges within it. A general background and high-level description of the current state of knowledge is presented. Then, for each of the three subareas, namely the autonomous management and real-time control, methods and tools for monitoring and service prediction, and smart pricing and competition in multi-domain systems, a brief general introduction and background are presented, and a list of key research challenges is formulated.

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  • 1069.
    van Dijk, Jiska
    et al.
    Norge.
    Bongard, Terje
    Norge.
    Jönsson, K. Ingemar
    Kristianstad University, Research environment Man & Biosphere Health (MABH). Kristianstad University, School of Education and Environment, Avdelningen för Naturvetenskap.
    May, Roel
    Norge.
    Beery, Thomas
    Kristianstad University, Research environment Man & Biosphere Health (MABH). Kristianstad University, School of Education and Environment, Avdelningen för Naturvetenskap.
    The value of nature for growth, development and human well-being – perspectives from human evolution and human behavioral ecology2015Conference paper (Refereed)
  • 1070.
    Vaziri-Sani, Fariba
    et al.
    Kristianstad University, School of Education and Environment, Avdelningen för Naturvetenskap. Kristianstad University, Research environment Man & Biosphere Health (MABH). Lunds universitet.
    Brundin, Charlotte
    Lund University.
    Agardh, Daniel
    Lund University.
    Osteoprotegerin autoantibodies do not predict low bone mineral density in middle-aged women2017In: Bone Reports, ISSN 2352-1872, Vol. 7, p. 132-136Article in journal (Refereed)
    Abstract [en]

    Purpose

    Autoantibodies against osteoprotegerin (OPG) have been associated with osteoporosis. The aim was to develop an immunoassay for OPG autoantibodies and test their diagnostic usefulness of identifying women general population with low bone mineral density.

    Methods

    Included were 698 women at mean age 55.1 years (range 50.4–60.6) randomly selected from the general population. Measurement of wrist bone mineral density (g/cm2) was performed of the non-dominant wrist by dual-energy X-ray absorptiometry (DXA). A T-score < − 2.5 was defined as having a low bone mineral density. Measurements of OPG autoantibodies were carried by radiobinding assays. Cut-off levels for a positive value were determined from the deviation from normality in the distribution of 398 healthy blood donors representing the 99.7th percentile.

    Results

    Forty-five of the 698 (6.6%) women were IgG-OPG positive compared with 2 of 398 (0.5%) controls (p < 0.0001) and 35 of the 698 (5.0%) women had a T-score < − 2.5. There was no difference in bone mineral density between IgG-OPG positive (median 0.439 (range 0.315–0.547) g/cm2) women and IgG-OPG negative (median 0.435 (range 0.176–0.652) g/cm2) women (p = 0.3956). Furthermore, there was neither a correlation between IgG-OPG levels and bone mineral density (rs = 0.1896; p = 0.2068) nor T-score (rs = 0.1889; p = 0.2086). Diagnostic sensitivity and specificity of IgG-OPG for low bone mineral density were 5.7% and 92.9%, and positive and negative predictive values were 7.4% and 90.8%, respectively.

    Conclusion

    Elevated OPG autoantibody levels do not predict low bone mineral density in middle-aged women selected from the general population.

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  • 1071.
    Vecchi, Matteo
    et al.
    Italien.
    Cesari, Michele
    Italien.
    Bertolani, Roberto
    Italien.
    Jönsson, Ingemar
    Kristianstad University, Research environment Man & Biosphere Health (MABH). Kristianstad University, School of Education and Environment, Avdelningen för Naturvetenskap.
    Rebecchi, Lorena
    Italien.
    Guidetti, Roberto
    Italien.
    Integrative systematic studies on tardigrades from Antarctica identify new genera and new species within Macrobiotoidea and Echiniscoidea2016In: Invertebrate systematics, ISSN 1445-5226, E-ISSN 1447-2600, Vol. 30, no 4, p. 303-322Article in journal (Refereed)
    Abstract [en]

    Tardigrades represent one of the most abundant groups of Antarctic metazoans in terms of abundance and diversity, thanks to their ability to withstand desiccation and freezing; however, their biodiversity is underestimated. Antarctic tardigrades from Dronning Maud Land and Victoria Land were analysed from a morphological point of view with light microscopy and scanning electron microscopy, and from a molecular point of view using two genes (18S, 28S) analysed in Bayesian inference and maximum-likelihood frameworks. In addition, indel-coding datasets were used for the first time to infer tardigrade phylogenies. We also compared Antarctic specimens with those from Italy and Greenland. A combined morphological and molecular analysis led to the identification of two new evolutionary lineages, for which we here erect the new genera Acanthechiniscus, gen. nov. (Echiniscidae, Echiniscoidea) and Mesobiotus, gen. nov. (Macrobiotidae, Macrobiotoidea). Moreover, two species new to science were discovered: Pseudechiniscus titianae,sp. nov. (Echiniscidae : Echiniscoidea) and Mesobiotus hilariae, sp. nov. (Macrobiotidae : Macrobiotoidea). This study highlights the high tardigrade diversity in Antarctica and the importance of an integrated approach in faunal and taxonomic studies.

  • 1072.
    Vidström, Arne
    Kristianstad University, School of Education and Environment.
    Yllesugning och ylleätning hos katter (Felis silvestris catus)2012Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Wool sucking and wool eating are comparatively unusual behavioral problems in domestic cats. They have not been studied much, despite having been known for a long time. There is a lack of well formulated hypotheses that can explain the results from the only published study about the subject thus far.  Because of that need, an internet-based survey with 205 cats was performed. According to the results, the natural suckling behavior can remain into adulthood when a kitten is taken from its mother before 5-6 weeks of age. The suckling behavior is directed towards fabric in the form of the oral stereotypy wool sucking. Wool eating turned out to be a stereotypic behavior too, but in this case associated with the degree of object play that a cat engages in. The degree of object play is higher in younger cats than in older cats, and also higher in breeds of Southeast Asian origin than in other breeds. The degree of wool eating turned out to follow the same pattern as the degree of object play. Wool eating thus seems to be a misdirected predatory behavior. It is still unclear if there is a connection between wool sucking and wool eating or not.

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  • 1073. Voelz, Neal J.
    et al.
    Vought, Lena B. M.
    Lunds universitet.
    Lacoursière, Jean O.
    Lunds universitet.
    The distribution and abundance of hyporheic invertebrates in a small Swedish stream2006In: International Association of Theoretical and Applied Limnology, Vol 29, Pt 4, Proceedings, 2006, p. 1777-1781Conference paper (Refereed)
  • 1074. Vought, Lena B. M.
    et al.
    Dahl, J
    Pedersen, CL
    Lacoursière, Jean O.
    Nutrient retention in riparian ecotones1994In: Ambio, ISSN 0044-7447, E-ISSN 1654-7209, Vol. 23, no 6, p. 342-348Article in journal (Refereed)
    Abstract [en]

    Nutrient retention mechanisms in riparian buffer strips are reviewed with emphasis on surface runoff and subsurface flows, the main pathways of exchanges between the stream and its surroundings. Unique physical and biogeochemical properties prevailing in these riparian ecotones dictate the flux of water, nutrients and other exogenous substances between the upland areas and the stream. Removal of nutrients from surface inflows is induced by deposition of sediment bound nutrients and exchange of dissolved nutrients with the soil/litter surface. Removal of nitrogen in subsurface flows can partly be explained by vegetation uptake, but the main mechanism for removal is usually denitrification. In channelized streams, the subsurface inflows have, in most cases, been altered to discharges via drainage tiles, with the exchange flows (water leaving and re-entering the open-channel via the stream bed and banks) being greatly decreased. Consequently, to improve nitrogen removal in these systems, these flows have to be intercepted or reestablished either through restoration of the old stream valley or through managed structures in the buffer strips.

  • 1075.
    Vought, Lena B. M.
    et al.
    Lunds universitet.
    Kullberg, A
    Petersen, R C
    Effect of riparian structure, temperature and channel morphometry on detritus processing in channelized and natural woodland streams in southern Sweden1998In: Aquatic conservation, ISSN 1052-7613, E-ISSN 1099-0755, Vol. 8, no 2, p. 273-285Article in journal (Refereed)
    Abstract [en]

    1. Ten south Swedish streams were selected to represent two distinct types—natural woodland streams and channelized streams. Measurements were made on leaching, decomposition and microbial respiration of the dominant riparian vegetation (European Black Alder), structure of the benthic macroinvertebrate community, macroinvertebrates inhabiting leaf material, channel morphometry, macrophyte composition, water chemistry and total accumulated degree days.

    2. Leaf decomposition rates were not significantly different when channelized streams were compared with natural woodland streams. In channelized streams the average decomposition rate was −0.0556±0.0337 (±S.D.) day−1 compared with −0.0457±0.0115 day−1 in natural woodland streams.

    3. There was significantly higher variation in leaf decomposition among the five channelized streams compared with the five natural streams (F–test, p<0.05). This was mainly due to extremely high decomposition rates in channelized streams colonized by emergent macrophytes.

    4. Alder decomposition rates were low in channelized streams without macrophytes (−0.0053 °day−1), intermediate in natural streams (−0.0087 °day−1), and high in channelized streams with macrophytes (−0.0136 °day−1).

    5. The shredder functional group ranged from 13 to 70% of the benthic community in the natural streams. Channelized streams had a more variable shredder population ranging from 0.5 to 80%. The highest values were found in channelized streams that had become colonized by macrophytes.

    6. There was a significant difference in total accumulated degree days between the channelized (256 °day) and natural woodland streams (209 °day). This is most likely an effect of drainage tiles contributing warmer groundwater to the channelized streams during fall.

    7. It is concluded that, contrary to the prevailing conceptual model of stream systems, decomposition rates and macroinvertebrate functions are not necessarily reduced in streams without riparian vegetation. The loss of the riparian canopy can stimulate emergent macrophytes which will provide autochthonous detritus for benthic communities. This will change benthic community structure and the life cycle strategies present.

  • 1076.
    Vought, Lena B. M.
    et al.
    Lunds universitet.
    Lannerstad, M
    The structure of the riparian ecotone and its implication for stream macroinvertebrate community2001In: International Association Of Theoretical And Applied Limnology, Vol 27, Pt 3, Proceedings, 2001, p. 1357-1360Conference paper (Refereed)
  • 1077.
    Vought, Lena B. M.
    et al.
    Lunds universitet.
    Pinay, G
    Fuglsang, A
    Ruffinoni, C
    Structure and function of buffer strips from a water-quality perspective in agricultural landscapes1995In: Landscape and Urban Planning, ISSN 0169-2046, E-ISSN 1872-6062, Vol. 31, no 1-3, p. 323-331Article in journal (Refereed)
    Abstract [en]

    Buffer strips can greatly improve the water quality of nearby agricultural streams by reducing nutrient leaching in groundwater and surface water runoff, even though they comprise little of the total catchment area. Hence, vegetated buffer zones located along streams and in the upland portions of the catchment can minimize erosion or trap sediments in surface runoff and thereby decrease phosphorus loading in surface water. For example, a buffer strip 10 m wide can reduce the phosphorus load, typically bound to sediment, by as much as 95%. Moreover, both natural and constructed riparian forests and wetlands may create conditions favorable for nitrogen transformation/removal by soil microbial processes such as denitrification, with as much as 100% of the nitrate being removed in these zones.

    In addition to nutrient removal, buffer strips will increase the diversity of flora and fauna in the otherwise monocultural landscape. The vegetation along the stream will also stabilize the stream banks and improve habitat for both fish and invertebrates within the stream.

  • 1078.
    Vyöni, Anna
    Kristianstad University, Faculty of Natural Science. 9605056424.
    Finns det lämpliga habitat för den vitryggiga hackspetten i Luleå kommun?2020Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Because of the expanding modern forestry where pine and spruce have a higher economical value than deciduous trees, the deciduous forests have decreased drastically and therefore also the Whitebacked Woodpecker (Dendrocopos leucotos). I have chosen to examine the probability for nesting White-backed Woodpecker in this essay, in particular if the areas invented for this essay constitute suitable habitat for the species to nest in, and what measures should be taken if the result declares the areas unsuitable. Through field inventory, data have been generated about the volume of each tree species and volume of dead wood.

    In area A, 55% of the total volume (m3sk) consists of birch. 22% consists of spruce, which is a high value for a suitable nesting habitat for the white-backed woodpecker. All living deciduous trees together is 65%. The dead trees are 7.3% of the volume, which is way lower than the recommended limit (>20%) for a suitable habitat. In area B, 59.7% of the total volume consists of birch. 22.1% consists of spruce. All living deciduous trees together is 68.9%. The dead trees are 3.4% which is way lower than the recommended limit for a suitable habitat.

    The results show that the areas are not suitable for the time being. I discuss if the method used may in fact under-estimate the study area’s quality as a nesting habitat. Among other things, that the dying trees are not considered, only those that are completely dead.

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  • 1079.
    Wallenbeck, A
    et al.
    Sveriges lantbruksuniversitet.
    Olsson, Viktoria
    Kristianstad University, Faculty of Natural Science. Kristianstad University, Faculty of Natural Science, Research Environment Food and Meals in Everyday Life (MEAL).
    Yngvesson, Jenny
    Sveriges lantbruksuniversitet.
    Gunnarsson, S
    Sveriges lantbruksuniversitet.
    Ekologiska kycklingar: lyckliga och lyckade?2018Conference paper (Other (popular science, discussion, etc.))
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  • 1080.
    Wallensten, A.
    et al.
    Smedby Health Center, Kalmar County Council.
    Munster, V. J.
    Department of Virology and National Influenza Center, Erasmus Medical Center, Rotterdam.
    Elmberg, Johan
    Kristianstad University, Department of Mathematics and Science.
    Osterhaus, A. D. M. E.
    Department of Virology and National Influenza Center, Erasmus Medical Center, Rotterdam.
    Fouchier, R. A. M.
    Department of Virology and National Influenza Center, Erasmus Medical Center, Rotterdam.
    Olsen, B.
    Department of Infectious Diseases, Umeå University.
    Multiple gene segment reassortment between Eurasian and American lineages of influenza A virus (H6N2) in Guillemot (Uria aalge)2005In: Archives of Virology, ISSN 0304-8608, E-ISSN 1432-8798, Vol. 150, no 8, p. 1685-1692Article in journal (Refereed)
    Abstract [en]

    Guillemots banded in the northern Baltic Sea were screened for influenza A virus (IAV). Three out of 26 sampled birds tested positive by RT-PCR. Two of these were characterized as subtype H6N2. Phylogenetic analyses showed that five gene segments belonged to the American avian lineage of IAVs, whereas three gene segments belonged to the Eurasian lineage. Our findings indicate that avian IAVs may have a taxonomically wider reservoir spectrum than previously known and we present the first report of a chimeric avian IAV with genes of American and Eurasian origin in Europe.

  • 1081.
    Wallensten, Anders
    et al.
    Smedby Health Center, Kalmar.
    Munster, Vincent J.
    Erasmus Medical Center, Rotterdam.
    Latorre-Margalef, Neus
    Kalmar University.
    Brytting, Mia
    Swedish Institute for Infectious Disease Control, Solna.
    Elmberg, Johan
    Kristianstad University, Department of Mathematics and Science.
    Fouchier, Ron A.M.
    Erasmus Medical Center, Rotterdam.
    Fransson, Thord
    Swedish Museum of Natural History, Stockholm.
    Haemig, Paul D.
    Kalmar University.
    Karlsson, Malin
    Swedish Institute for Infectious Disease Control, Solna.
    Lundkvist, Åke
    Swedish Institute for Infectious Disease Control, Solna.
    Osterhaus, Albert D.M.E.
    Erasmus Medical Center, Rotterdam.
    Stervander, Martin
    Ottenby Bird Observatory, Degerhamn.
    Waldenstrom, Jonas
    Kalmar University.
    Olsen, Björn
    Kalmar University.
    Surveillance of influenza A virus in migratory waterfowl in northern Europe2007In: Emerging Infectious Diseases, ISSN 1080-6040, E-ISSN 1080-6059, Vol. 13, no 3, p. 404-411Article in journal (Refereed)
    Abstract [en]

    We conducted large-scale, systematic sampling of influenza type A virus in migratory waterfowl (mostly mallards [Anas platyrhynchos]) at Ottenby Bird Observatory, southeast Sweden. As with previous studies, we found a higher prevalence in fall than spring, and among juveniles compared with adults. However, in contrast to other studies, we found that prevalence in spring was sometimes high (mean 4.0%, highest 9.5%). This finding raises the possibility that ducks are capable of perpetuating influenza A virus of different subtypes and subtype combinations throughout the year and from 1 year to the next. Isolation of the H5 and H7 subtypes was common, which suggests risk for transmission to sensitive domestic animals such as poultry. We argue that wild bird screening can function as a sentinel system, and we give an example of how it could have been used to forecast a remote and deadly outbreak of influenza A in poultry.

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  • 1082.
    Wallin, Sandra
    et al.
    Kristianstad University College, School of Teacher Education.
    Mellblom, Jeanette
    Kristianstad University College, School of Teacher Education.
    Nyckeln till naturvetenskap: En studie av pedagogers arbete med naturvetenskap tillsammans med barn i förskolan2010Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Syftet med studien är att undersöka hur pedagoger arbetar med naturvetenskap tillsammans med barn i förskolan. Skolverket (2009) framhåller en problematik som är att målen i den nuvarande läroplanen anses vara otydliga och pedagogers kunskaper kan behöva utvecklas när det gäller naturvetenskap. Det nya läroplansförslaget ska förtydliga och lyfta fram naturvetenskap samt höja ambitionsnivån för pedagoger i förskolan. Litteraturgenomgången visar vikten av att pedagoger är medvetna om kunskaps-, lärande- och barnsyn för att kunna möta uppdraget och den pekar på vikten av material och miljö för att stimulera barns upptäckande. Den teoretiska utgångspunkten baseras på ett sociokulturellt perspektiv där samspel, kommunikation, språk och artefakter är viktiga delar. I studien används observationer och intervjuer som verktyg för att undersöka hur pedagoger arbetar med naturvetenskap samt hur de ser på sitt arbetssätt. Teori och praktik kan komplettera varandra i arbetet med naturvetenskap och resultatet av undersökningen visar att pedagogernas kunskaper inom ämnet har stor betydelse. Slutsatsen av undersökningen är att pedagogernas kunskaper syns i arbetet genom kommunikation, samspel och användandet av fysiska och språkliga artefakter. I sammanhanget innebär det att vidareutbildning inom det naturvetenskapliga området är av stor vikt för att kunna möta läroplanen. Pedagogers kunskaper blir nyckeln till naturvetenskap.

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  • 1083.
    Wallnäs, Kristina
    Kristianstad University College.
    En jämförelse av fytoplankton vid kust och utomskärs i Pukaviksbukten2006In: Tsunami, ISSN 1651-5803, no 2Article in journal (Other (popular science, discussion, etc.))
    Abstract [sv]

    Östersjön är ett av jordens största bräckvattenhav, med stora skillnader i salthalten från norr till syd. Den speciella topologin gör havet känsligt för variationer i syrehalten samt för olika typer av föroreningar, genom att vattenutbytet med omgivande hav är liten. Detta resulterar i att det förekommer skillnader i artsammansättingen med mindre antal olika arter. Området som undersökts i detta arbete är en del av Pukaviksbukten. Denna bukt har blivit ett Ramsar område och omfattas av Natura 2000. Området kännetecknas av en speciell natur med känsliga arter och våtmarker. Iden bakom dessa projekt är att skydda och bibehålla speciella naturtyper för framtiden. Detta studien behandlar algförekomsten samt dom kemiska och fysiska parametrarna vid två stationer i Pukaviksbukten, utanför Blekingekusten. Dom två stationerna ansågs vara olika genom sina avstånd från kustlinjen, vattenturbulensen och näringshalten. Hypotesen var att en skillnad i artförekomsten skulle finnas mellan stationerna beroende på djup och provtagningsdagar. Proven tog vid två tillfällen med en veckas mellanrum. Det första stationen var nära Mörrumsåns mynning och den andra nära Hanö.

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  • 1084.
    Wamsler, Christine
    et al.
    Lund University.
    Niven, Lisa
    Lund University.
    Beery, Thomas H.
    Kristianstad University, School of Education and Environment, Avdelningen för Naturvetenskap. Kristianstad University, Research environment Man & Biosphere Health (MABH).
    Bramryd, Torleif
    Lund University.
    Ekelund, Nils
    Malmö University.
    Jönsson, K. Ingemar
    Kristianstad University, School of Education and Environment, Avdelningen för Naturvetenskap. Kristianstad University, Research environment Man & Biosphere Health (MABH).
    Osmani, Adelina
    Lund University.
    Palo, Thomas
    Swedish University of Agricultural Sciences.
    Stålhammar, Sanna
    Lund University.
    Operationalizing ecosystem-based adaptation: harnessing ecosystem services to buffer communities against climate change2016In: Ecology & society, ISSN 1708-3087, E-ISSN 1708-3087, Vol. 21, no 1, article id 31Article in journal (Refereed)
    Abstract [en]

    Ecosystem-based approaches for climate change adaptation are promoted at international, national, and local levels by both scholars and practitioners. However, local planning practices that support these approaches are scattered, and measures are neither systematically implemented nor comprehensively reviewed. Against this background, this paper advances the operationalization of ecosystem-based adaptation by improving our knowledge of how ecosystem-based approaches can be considered in local planning (operational governance level). We review current research on ecosystem services in urban areas and examine four Swedish coastal municipalities to identify the key characteristics of both implemented and planned measures that support ecosystem-based adaptation. The results show that many of the measures that have been implemented focus on biodiversity rather than climate change adaptation, which is an important factor in only around half of all measures. Furthermore, existing measures are limited in their focus regarding the ecological structures and the ecosystem services they support, and the hazards and risk factors they address. We conclude that a more comprehensive approach to sustainable ecosystem-based adaptation planning and its systematic mainstreaming is required. Our framework for the analysis of ecosystem-based adaptation measures proved to be useful in identifying how ecosystem-related matters are addressed in current practice and strategic planning, and in providing knowledge on how ecosystem-based adaptation can further be considered in urban planning practice. Such a systematic analysis framework can reveal the ecological structures, related ecosystem services, and risk-reducing approaches that are missing and why. This informs the discussion about why specific measures are not considered and provides pathways for alternate measures/designs, related operations, and policy processes at different scales that can foster sustainable adaptation and transformation in municipal governance and planning.

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  • 1085.
    Wang, Qinghua
    Kristianstad University, Faculty of Natural Science, Avdelningen för datavetenskap.
    Lightweight session: key establishment for the internet of things2018Conference paper (Refereed)
  • 1086.
    Wang, Qinghua
    Kristianstad University, School of Health and Society, Avdelningen för Design och datavetenskap.
    Using secret spreading codes to enhance physical layer security in wireless communication2017In: ICC 2017: 3rd International Workshop on Advanced PHY and MAC Technology for Super Dense Wireless Networks, 2017Conference paper (Refereed)
    Abstract [en]

    The broadcast nature of wireless communication make it intrinsically vulnerable to jamming and eavesdropping attacks. Spread-spectrum techniques spread narrowband signals over a wide bandwidth, and provide good resistance to noise and jamming attacks. However, spread-spectrum signals can still be intercepted if their used spreading codes are known. To tackle this issue, this paper proposes a lightweight design on generating secret spreading codes. A secret spreading code has all the desired properties of an ordinary spreading code, plus its unpredictability. Our method on generating secret spreading codes is shown to be resistant to cryptanalysis, and has little requirement on memory and computing resources.

  • 1087.
    Wang, Qinghua
    et al.
    Kristianstad University, Faculty of Natural Science, Avdelningen för datavetenskap.
    Huang, Xin
    England.
    Mengistu, Dawit
    Kristianstad University, Faculty of Natural Science, Avdelningen för datavetenskap. dawit.mengistu@hkr.se .
    Session key agreement for end-to-end security in time-synchronized networks2018Conference paper (Other academic)
  • 1088.
    Wendin, Karin
    et al.
    Kristianstad University, School of Education and Environment, Avdelningen för Mat- och måltidsvetenskap. Kristianstad University, Research Environment Food and Meals in Everyday Life (MEAL).
    Normann, Cecilia
    RISE.
    Forsberg, Sarah
    Kristianstad University, School of Education and Environment, Avdelningen för Mat- och måltidsvetenskap. Kristianstad University, Research Environment Food and Meals in Everyday Life (MEAL).
    Davidsson, Fredrik
    Geoloc AB.
    Josell, Åsa
    Atria Scandinavia AB.
    Prim, Mia
    RISE.
    Langton, Maud
    Sveriges Lantbruksuniversitet.
    Insects as a culinary ingredient: consumer acceptance and neophobia2017Conference paper (Other academic)
    Abstract [en]

    Introduction: The world´s population is increasing and thus the pressure on the earth´s resources. To ensure food supply and sustainability, food habits in western societies have to change. A significant contribution to global sustainability can be achieved by, for example, decreasing meat consumption 1. Advantages concerning nutrition and sustainability have been found by inclusion of insects in the diet2. Insects as food has a large potential, and the “culinary way” seems to be an effective way to reach consumer acceptance for insect-based foods3. The aim was to examine consumer acceptance and neophobia related to the use of insects as ingredients in food.

    Methods: Food neophobia4, attitudes and acceptance were surveyed by a web-based questionnaire answered by 150 respondents.

    Results: Significantly higher acceptance was shown for insect protein added to foods as a “powder”, with invisible insects than for added visible insects. The interest of buying insect protein as a powder was higher than of buying whole insects. Further, 24 of the respondents (16%) were considered neophobic.

    Discussion: To reach acceptance of insect protein, culinary food could include “non-visible” insects. This is in line with the fact that food neophobia and acceptance are influenced by the sensory attributes and benefits of the actual food. Further, neophobia varies over the life course 5.

    Conclusions: The use of insect protein in food as a powder has higher acceptance than use of whole insects. 16% of the respondent were neophobic.

    References:

    1. WWF. Living Planet Report 20

    2. Yen. Edible insects: Traditional knowledge or western phobia? Entomological   Research 2009

    3. Astrup Pedersen. Disgusting or delicious, MSc Thesis, Copenhagen University 2014    

    4. Pliner, Hobden. Development of a scale to measure the trait of food neophobia in humans. Appetite 1992

    5. Pliner, Salvy. Food neophobia in humans. Shepherd, Raats, ed. The psychology of food choice. 2006

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  • 1089. Wendt-Rasch, L
    et al.
    Vought, Lena B. M.
    Lunds universitet.
    Woin, P
    Effects of fenvalerate on the net-spinning behaviour of Hydropsyche siltalai (Dohler) (Trichoptera: Hydropsychidae)1998In: Hydrobiologia, ISSN 0018-8158, E-ISSN 1573-5117, Vol. 382, no 1-3, p. 53-61Article in journal (Refereed)
  • 1090.
    Westergren, Albert
    Kristianstad University, Faculty of Health Science, Research Environment PRO-CARE, Patient Reported Outcomes - Clinical Assessment Research and Education. Kristianstad University, Research Platform for Collaboration for Health. Kristianstad University, Faculty of Health Science, Avdelningen för sjuksköterskeutbildningarna och integrerad hälsovetenskap. Lunds universitet.
    The minimal eating observation form – version II (MEOF-II) revisited – validity and reliability2019In: Journal of Nursing Measurement, ISSN 1061-3749, E-ISSN 1945-7049, Vol. 27, no 3, p. 478-492Article in journal (Refereed)
    Abstract [en]

    Background and purpose: The Minimal Eating Observation Form-Version II (MEOF-II) is a screening and research tool for eating difficulties. Here we assess the psychometric properties of the tool. Methods: Cross-sectional MEOF-II data, n = 5,956 persons (nursing home residents [n = 3,087]; in-hospital patients [n = 1,490]; mean age 76.9; 61% women). Data was analyzed taking account of the dichotomous nature of item-level data, that is, based on tetrachoric correlations. Results: The MEOF-II items (n = 9) belonged to one higher order unidimensional factor (61.7% explained variance, omega 0.92), and three lower level factors, with three items each (92.9% explained variance, omega 0.83-0.88): deglutition; ingestion; and energy/appetite. Conclusion: The study provides support for the reliability and validity of the MEOF-II total scale and subscales, and the findings are in line with previous studies.

  • 1091. Whelan, M. J.
    et al.
    Van Egmond, R.
    Guymer, I.
    Lacoursière, Jean O.
    Kristianstad University, School of Education and Environment, Avdelningen för Naturvetenskap.
    Vought, Lena B. M.
    Kristianstad University, School of Education and Environment, Avdelningen för Naturvetenskap.
    Finnegan, C.
    Fox, K. K.
    Sparham, C.
    O'Connor, S.
    Vaughan, M.
    Pearson, J. M.
    The behaviour of linear alkyl benzene sulphonate under direct discharge conditions in Vientiane, Lao PDR2007In: Water Research, ISSN 0043-1354, E-ISSN 1879-2448, Vol. 41, no 20, p. 4730-4740Article in journal (Refereed)
    Abstract [en]

    Direct discharge of untreated sewage to surface waters is a common practice in many parts of the world. However, relatively little is known about the behaviour of synthetic organic pollutants under these conditions. This paper describes a sampling campaign designed to track changes in water quality in a surface water system in Vientiane (Lao PDR) receiving significant quantities of untreated waste water. The study was based on following in-channel transport using a fluorescent tracer injected as a pulse, with a focus on the anionic surfactant linear alkylbenzene sulphonate (LAS) and ammonia. Water samples were collected at a number of stations with sampling times estimated to coincide with solute time-of-travel. The reduction in LAS concentration with flow-time could be approximated by first-order kinetics with a half life of about 7 h. Free ammonia concentrations decreased more slowly than LAS and remained above the level believed to be toxic for sensitive aquatic species along the entire channel. Changes in the ratios of LAS alkyl chain homologues to total LAS concentrations suggest a preferential removal of longer chain lengths. The role of biodegradation in the removal of LAS was confirmed by the presence of LAS metabolites (sulphophenylcarboxylates, SPCs) which increased systematically (as a fraction of LAS remaining) with flow-time.

  • 1092.
    Widén, Cecilia
    et al.
    Kristianstad University, School of Health and Society, Avdelningen för Oral hälsa och folkhälsovetenskap. Kristianstad University, Research environment Oral Health - Public Health - Quality of Life (OHAL).
    Critén, Sladjana
    Kristianstad University, School of Health and Society, Avdelningen för Oral hälsa och folkhälsovetenskap. Kristianstad University, Research environment Oral Health - Public Health - Quality of Life (OHAL).
    Renvert, Stefan
    Kristianstad University, School of Health and Society, Avdelningen för Oral hälsa och folkhälsovetenskap. Kristianstad University, Research environment Oral Health - Public Health - Quality of Life (OHAL).
    Persson, Rutger G
    Kristianstad University, School of Health and Society, Avdelningen för Oral hälsa och folkhälsovetenskap. Kristianstad University, Research environment Oral Health - Public Health - Quality of Life (OHAL).
    Measuring inflammatory markers in saliva inpolyphenols research2016Conference paper (Refereed)
    Abstract [en]

    There is currently an interest in the possible anti-inflammatory effects of intake of fruits and berries. The aim of this study was to determine whether the twice daily administration of a berry beverage rich in polyphenols had effects on salivary levels of a selected group of pro-inflammatory cytokines for one week in a pre- and post-study design. Levels of selected cytokines were compared in whole saliva and saliva obtained using commercially available collection devices (Salivette® Cotton and Salivette® Synthetic rolls). Twenty healthy subjects drank 200 mL of a berry beverage consisting of equal parts of bilberries (Vaccinium myrtillus), black currant (Ribes nigrum), lingonberries (Vaccinium vitis-idaea), sea buckthorn (Hippophae rhamnoides) diluted with 50% water. Levels of cytokines, IL-1β, IL-8, IL-12 and TNF-α were assessed. Levels of cytokines differed between sources of collection but were highest in whole saliva. The use of cotton or synthetic rolls does not seem to be useful as a method for saliva collection and cytokine analysis. There was no significant change in the levels of selected cytokines at baseline and after intake of the berry beverage in whole stimulated saliva. There was a large inter-individual variation in cytokine levels.

  • 1093.
    Wilsson, Anneli
    Kristianstad University College, Department of Mathematics and Science.
    Förslag till placering av anläggningar för att förbättra vattenkvalitén i Tidan 2006Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [sv]

    Considering water quality, landuse and reducion of wetland area in the watershed of Tidan, areas witch are in need of constructions to improve the water quality are identified. Constructions are suggested to be located within the smaller streams in the watershed, so that the water is treated before it reaches the stream Tidan.

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  • 1094.
    Winter, Jeff
    et al.
    Blekinge Institute of Technology.
    Rönkkö, Kari
    Blekinge Institute of Technology.
    SPI success factors within product usability evaluation2010In: JOURNAL OF SYSTEMS AND SOFTWARE, ISSN 0164-1212, Vol. 83, no 11, p. 2059-2072Article in journal (Refereed)
    Abstract [en]

    This article presents an experience report where we compare 8 years of experience of product related usability testing and evaluation with principles for software process improvement (SPI). In theory the product and the process views are often seen to be complementary, but studies of industry have demonstrated the opposite. Therefore, more empirical studies are needed to understand and improve the present situation. We find areas of close agreement as well as areas where our work illuminates new characteristics. It has been identified that successful SPI is dependent upon being successfully combined with a business orientation. Usability and business orientation also have strong connections although this has not been extensively addressed in SPI publications. Reasons for this could be that usability focuses on product metrics whilst today's SPI mainly focuses on process metrics. Also because today's SPI is dominated by striving towards a standardized, controllable, and predictable software engineering process: whilst successful usability efforts in organisations are more about creating a creative organisational culture advocating a useful product throughout the development and product life cycle. We provide a study and discussion that supports future development when combining usability and product focus with SPI, in particular if these efforts are related to usability process improvement efforts. (C) 2010 Elsevier Inc. All rights reserved.

  • 1095.
    Winter, Jeff
    et al.
    Blekinge Institute of Technology.
    Rönkkö, Kari
    Blekinge Institute of Technology.
    Hellman, Mats
    UIQ Technology AB.
    Reporting Usability Metrics Experiences2009In: 2009 ICSE WORKSHOP ON COOPERATIVE AND HUMAN ASPECTS OF SOFTWARE ENGINEERING, IEEE , 2009, p. 108-115Conference paper (Refereed)
    Abstract [en]

    It is often claimed that software development is negatively affected by infrequent, incomplete and inconsistent measurements; improving with the help of metrics is an obvious solution. Software testing provides opportunities for measurement that give organizations insight in to processes. Usability testing is part of the testing area, although it is not a commonly addressed area within software engineering, perhaps because of a split between qualitative and quantitative paradigms. We compare a usability testing framework called UTUM with principles for Software Process Improvement, and find areas of close agreement as well as areas where our work illuminates new characteristics. UTUM is found to be a useful vehicle for improvement in software engineering, dealing as it does with both product and process. Our work emphasises the importance of the neglected area of usability testing. Our experience also illustrates how the metrics have been tailored to act as a boundary object between different disciplines.

  • 1096.
    Winter, Jeff
    et al.
    Blekinge Institute of Technology.
    Rönkkö, Kari
    Blekinge Institute of Technology.
    Rissanen, Mikko
    ABB Corporate Research.
    Identifying organizational barriers: a case study of usability work when developing software in the automation industry2014In: JOURNAL OF SYSTEMS AND SOFTWARE, ISSN 0164-1212, Vol. 88, p. 54-73Article in journal (Refereed)
    Abstract [en]

    This study investigates connections between usability efforts and organizational factors. This is an important field of research which so far appears to be insufficiently studied and discussed. It illustrates problems when working with software engineering tasks and usability requirements. It deals with a large company that manufactures industrial robots with an advanced user interface, which wanted to introduce usability KPIs, to improve product quality. The situation in the company makes this difficult, due to a combination of organizational and behavioural factors that led to a "wicked problem" that caused conflicts, breakdowns and barriers. Addressing these problems requires a holistic view that places context in the foreground and technological solutions in the background. Developing the right product requires communication and collaboration between multiple stakeholders. The inclusion of end users, who fully understand their own work context, is vital. Achieving this is dependent on organizational change, and management commitment. One step to beginning this change process may be through studying ways to introduce user-centred design processes. (C) 2013 Elsevier Inc. All rights reserved.

  • 1097.
    Winzell, Claes
    et al.
    Rise mätteknik.
    Pendrill, Leslie
    Rise mätteknik.
    Felin, Aslak
    Rise mätteknik.
    Melin, Jeanette
    Rise mätteknik.
    Nilsson, Evalill
    Linköpings universitet.
    Westergren, Albert
    Kristianstad University, Faculty of Health Science, Research Environment PRO-CARE, Patient Reported Outcomes - Clinical Assessment Research and Education. Kristianstad University, Research Platform for Collaboration for Health. Kristianstad University, Faculty of Health Science, Avdelningen för sjuksköterskeutbildningarna och integrerad hälsovetenskap.
    Hagell, Peter
    Kristianstad University, Faculty of Health Science, Research Environment PRO-CARE, Patient Reported Outcomes - Clinical Assessment Research and Education. Kristianstad University, Research Platform for Collaboration for Health. Kristianstad University, Faculty of Health Science, Avdelningen för sjuksköterskeutbildningarna och integrerad hälsovetenskap.
    Hagqvist, Curt
    Karlstads universitet.
    Jämförelser kräver kvalitetssäkrad mätteknik2019In: Dagens Medicin, debattArticle in journal (Other (popular science, discussion, etc.))
  • 1098.
    Woodward, Guy
    et al.
    Department of Zoology, Ecology and Plant Science, University College Cork.
    Gessner, Mark O.
    Department of Aquatic Ecology, Eawag.
    Giller, Paul S.
    Department of Zoology, Ecology and Plant Science, University College Cork.
    Gulis, Vladislav
    Institute of Marine Research (IMAR) and Department of Life Sciences, University of Coimbra.
    Hladyz, Sally
    Department of Zoology, Ecology and Plant Science, University College Cork.
    Lecerf, Antoine
    Université de Toulouse.
    Malmqvist, Björn
    Department of Ecology and Environmental Science, Umeå University.
    McKie, Brendan G.
    Department of Ecology and Environmental Science, Umeå University.
    Tiegs, Scott D.
    Department of Aquatic Ecology, Eawag.
    Cariss, Helen
    Department of Environmental and Geographical Sciences, Manchester Metropolitan University.
    Dobson, Mike
    Department of Environmental and Geographical Sciences, Manchester Metropolitan University.
    Elosegi, Arturo
    Department of Plant Biology and Ecology, Faculty of Science and Technology, University of the Basque Country, Bilbao.
    Ferreira, Verónica
    Institute of Marine Research (IMAR) and Department of Life Sciences, University of Coimbra.
    Graça, Manuel A.S.
    Institute of Marine Research (IMAR) and Department of Life Sciences, University of Coimbra.
    Fleituch, Tadeusz
    Institute of Nature Conservation, Polish Academy of Sciences, Kraków.
    Lacoursière, Jean O.
    Kristianstad University, School of Education and Environment, Avdelningen för Naturvetenskap. Kristianstad University, Research environment Man & Biosphere Health (MABH).
    Nistorescu, Marius
    Department of Systems Ecology and Sustainability, University of Bucharest.
    Pozo, Jesús
    Department of Plant Biology and Ecology, Faculty of Science and Technology, University of the Basque Country, Bilbao.
    Risnoveanu, Geta
    Department of Systems Ecology and Sustainability, University of Bucharest.
    Schindler, Markus
    Department of Aquatic Ecology, Eawag.
    Vadineanu, Angheluta
    Department of Systems Ecology and Sustainability, University of Bucharest.
    Vought, Lena B. M.
    Kristianstad University, School of Education and Environment.
    Chauvet, Eric
    Université de Toulouse.
    Continental-scale effects of nutrient pollution on stream ecosystem functioning2012In: Science, ISSN 0036-8075, E-ISSN 1095-9203, Vol. 336, no 6087, p. 1438-1440Article in journal (Refereed)
    Abstract [en]

    Excessive nutrient loading is a major threat to aquatic ecosystems worldwide that leads to profound changes in aquatic biodiversity and biogeochemical processes. Systematic quantitative assessment of functional ecosystem measures for river networks is, however, lacking, especially at continental scales. Here, we narrow this gap by means of a pan-European field experiment on a fundamental ecosystem process—leaf-litter breakdown—in 100 streams across a greater than 1000-fold nutrient gradient. Dramatically slowed breakdown at both extremes of the gradient indicated strong nutrient limitation in unaffected systems, potential for strong stimulation in moderately altered systems, and inhibition in highly polluted streams. This large-scale response pattern emphasizes the need to complement established structural approaches (such as water chemistry, hydrogeomorphology, and biological diversity metrics) with functional measures (such as litter-breakdown rate, whole-system metabolism, and nutrient spiraling) for assessing ecosystem health.

  • 1099.
    Wu, Shiying
    et al.
    Department of Cell and Molecular Biology, Uppsala University.
    Chen, Yu
    Department of Cell and Molecular Biology, Uppsala University.
    Mao, Guanzhong
    Department of Cell and Molecular Biology, Uppsala University.
    Trobro, Stefan
    Department of Cell and Molecular Biology, Uppsala University.
    Kwiatkowski, Marek
    Department of Cell and Molecular Biology, Uppsala University.
    Kirsebom, Leif A.
    Department of Cell and Molecular Biology, Uppsala University.
    Transition-state stabilization in Escherichia coli ribonuclease P RNA-mediated cleavage of model substrates2014In: Nucleic Acids Research, ISSN 0305-1048, E-ISSN 1362-4962, Vol. 42, no 1, p. 631-642Article in journal (Refereed)
    Abstract [en]

    We have used model substrates carrying modified nucleotides at the site immediately 5' of the canonical RNase P cleavage site, the -1 position, to study Escherichia coli RNase P RNA-mediated cleavage. We show that the nucleobase at -1 is not essential but its presence and identity contribute to efficiency, fidelity of cleavage and stabilization of the transition state. When U or C is present at -1, the carbonyl oxygen at C2 on the nucleobase contributes to transition-state stabilization, and thus acts as a positive determinant. For substrates with purines at -1, an exocyclic amine at C2 on the nucleobase promotes cleavage at an alternative site and it has a negative impact on cleavage at the canonical site. We also provide new insights into the interaction between E. coli RNase P RNA and the -1 residue in the substrate. Our findings will be discussed using a model where bacterial RNase P cleavage proceeds through a conformational-assisted mechanism that positions the metal(II)-activated H2O for an in-line attack on the phosphorous atom that leads to breakage of the phosphodiester bond.

  • 1100.
    Yu, Li
    et al.
    Kristianstad University, School of Health and Society.
    Zhao, Sibin
    Kristianstad University, School of Health and Society.
    Design and implementation of an e-healthcare subsystem for chronic renal failure patients2009Report (Other academic)
    Abstract [en]

    This degree project deals with the analysis, design and implementation of an e-healthcare subsystem. The subsystem is a prototype for the patients in the chronic renal failure unit. The main purpose of this project is to make research on information and communication technology (ICT) applied on health care system and data presentation. The expected result is that a worked e-healthcare subsystem is implemented to demonstrate the application of modern ICT, and a good foundation for applying for new e-healthcare projects.

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1920212223 1051 - 1100 of 1107
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