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Relevant bibliographies by topics / Bioligy / Dissertations / Theses

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Dissertations / Theses on the topic 'Bioligy'

Author: Grafiati

Published: 29 July 2024

Last updated: 31 July 2025

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1

Kuusk, Sandra. "Control of Pistil Development in Arabidopsis thaliana by a Novel Class of Regulatory Genes." Doctoral thesis, Uppsala : Universitetsbiblioteket : Univ.-bibl. [distributör], 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3366.

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2

Winge, Per. "The evolution of small GTP binding proteins in cellular organisms. Studies of RAS GTPases in arabidopsis thaliana and the Ral GTPase from Drosophila melanogaster." Doctoral thesis, Norwegian University of Science and Technology, Faculty of Natural Sciences and Technology, 2002. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-169.

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<p>Small GTP binding proteins function as molecular switches which cycles between GTP-bound ON and GDP-bound OFF states, and regulate a wide variety of cellular processes as biological timers. The first characterized member of the small GTPase family, the mutated oncogene p21 src, later known as Harvey-Ras, was identified in the early 1980s (Shih, T. Y. et al. 1980). In the following years small Ras-lik GTPases were found in several organisms and it was soon discovered that they took part in processes, such as signal transduction, gene expression, cytoskeleton reorganisation, microtubule organ

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3

Nilsen, Liv Sigrid. "Coastal heath vegetation in central Norway; recent past, present state and future possibilities." Doctoral thesis, Norwegian University of Science and Technology, Department of Biology, 2004. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-250.

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4

Rohloff, Jens. "Cultivation of Herbs and Medicinal Plants in Norway - Essential Oil Production and Quality Control." Doctoral thesis, Norwegian University of Science and Technology, Department of Biology, 2003. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-415.

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<p>Essential oils (EO) are plant secondary metabolites that are known for their fragrance and food flavour properties. They consist of a complex mixture of mono- and sesquiterpenes, phenyl propanoids and oxygenated compounds. EOs can be present in different plant organs and materials, and their storage is related to specialised secretory structures. The yield of EOs from plant raw materials by distillation or pressing may on average vary from 0.1 – 1%, thus restricting the major EO production to the plant group of aromatic plants. Due to their function as signalling compounds between different

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5

Espmark, Åsa Maria. "Behavioural effects on environmental pollution in threespine stickleback Gasterosteus aculeatus L." Doctoral thesis, Norwegian University of Science and Technology, Department of Biology, 2003. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-423.

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<p>The aims of this study were to investigate the effects of known environmental contaminants on defined behavioural variables in fish, and to discuss properties of these behavioural traits that make them useful as potential indicators of pollution.</p><p>In studying the effects of pollution, the resulting biochemical and physiological alterations are more commonly measured. However, effects of pollution can manifest itself at all levels of biological organisation, including behaviour. In this respect, behaviour can be considered a valid biomarker of pollution in that it is expected to be both

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Solberg, Bård Øyvind. "Effects of climatic change on the growth of dominating tree species along major environmental gradients." Doctoral thesis, Norwegian University of Science and Technology, Department of Biology, 2002. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-487.

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<p>This thesis deals with effects of climate on tree growth of the dominating conifer species, Picea abies (L) Karst. (Norway spruce) and Pinus sylvestris L (Scots pine), in central Norway and Fennoscandia. Both species are sampled along major environmental gradients, i.e. altitude and oceanicity, and growth responses to climate, i.e. temperature and precipitation, are examined along these gradients. Additionally, time is considered as an environmental gradient and temporal responses are carefully deciphered. Special attention is given to large-scale climate oscillation and their effect on tre

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Røstelien, Tonette. "Functional characterisation of olfactory receptor neurone types in heliothine moths : Identification of molecular receptive ranges by the use of single cell recordings linked to gas chromatography and mass spectrometry." Doctoral thesis, Norwegian University of Science and Technology, Department of Biology, 2005. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-570.

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<p>When the study of this thesis was initiated, hardly any work had been carried out on how plant odour information was encoded by the olfactory RNs in heliothine moths. The method of gas chromatography linked to single cell recordings (GC-SCR) was employed and improved for identifying naturally occurring plant odorants that are detected by single RNs and can be considered as biologically relevant. Three species of the subfamily Heliothinae were included in this work, the two polyphagous <i>H. virescens </i>and <i>H. armigera</i> and the oligophagous <i>H. assulta</i>. The American <i>H. vires

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8

Karlberg, Olof. "Mitochondrial Evolution : Turning Bugs into Features." Doctoral thesis, Uppsala University, Molecular Evolution, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-4216.

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<p>The bacterial origin of mitochondria from an ancient endosymbiosis is now widely accepted and the mitochondrial ancestor is generally believed to belong to the bacterial subdivision α-proteobacteria. The high fraction of mitochondrial proteins encoded in the nucleus has commonly been explained with a massive transfer of genes from the genome of the ancestral mitochondrion.</p><p>The aim of this work was to get a better understanding of the mitochondrial origin and evolution by comparative genomics and phylogenetic analyses on mitochondria and α-proteobacteria. To this end, we sequenced the

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9

Klasson, Lisa. "Genome Evolution in Maternally Inherited Insect Endosymbionts." Doctoral thesis, Uppsala University, Department of Evolution, Genomics and Systematics, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-5885.

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<p>Symbiosis is a widely common phenomenon in nature and has undoubtedly contributed to the evolution of all organisms on earth. Symbiotic associations can be of varying character, such as parasitic or mutualistic, but all imply a close relationship. To study the evolution of genomes of insect endosymbionts, we have sequenced the genomes of the mutualist <i>Buchnera aphidicola</i> from the aphid <i>Schizaphis graminum</i> (Sg) and the reproductive manipulator <i>Wolbachia pipientis</i> strain wRi from <i>Drosophila simulans</i> that show strikingly different evolutionary patterns. </p><p>The c

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10

Costa, José Luis. "The tRNALeu (UAA) Intron of Cyanobacteria : Towards Understanding a Genetic Marker." Doctoral thesis, Uppsala universitet, Fysiologisk botanik, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-4537.

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The tRNALeu (UAA) intron has been recorded in the plastid genome of many algae and land plants and was the first intron to be discovered in cyanobacteria. In all known cases it interrupts the tRNALeu anticodon loop at a conserved position (U-intron-AA). Cyanobacteria are a diverse group of photosynthetic prokaryotes, some involved in symbiotic associations with a wide range of organisms. The most studied associations are those with plants, where strains of Nostoc are the common cyanobacterial partner. In this thesis two aspects of the biology of the cyanobacterial tRNALeu (UAA) intron are focu

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11

Prevodnik, Andreas. "The use of protein biomarkers in ecotoxicology : Studies of oxidative and genotoxic stress in the blue mussel (Mytilus edulis)." Doctoral thesis, Stockholm : Department of Systems Ecology, Stockholm University, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-6755.

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12

Wredle, Ulla. "Autophagic programmed cell death in the suspensor and endosperm of Vicia faba : An ultrastructural study." Doctoral thesis, Stockholm : Botaniska institutionen, Univ, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-123.

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13

Stranden, Marit. "Olfactory receptor neurones specified for the same odorants in three related heliothine species (Helicoverpa armigera, Helicoverpa assulta and Heliothis virescens). : Electrophysiology linked to gas chromatography and mass spectrometry." Doctoral thesis, Norwegian University of Science and Technology, Department of Biology, 2003. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-520.

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<p>Hvordan lærer og husker vi dufter? Hvordan skiller vi dem fra hverandre? </p><p>Det finnes liten kunnskap om hvilke duftsubstanser ulike lukteceller er utviklet for. I dag er gener for luktereseptorer identifisert i mange organismer, men kunnskapen om relevante duftstimuli mangler. Denne kunnskapen kan kun komme fra fysiologiske studier. I laboratoriet ble det brukt beslektede skadeinsekter som modeller for å studere innkoding av luktinformasjon i sanseceller og generelle prinsipper for luktesansens mekanismer.</p><p>Dette ble utført ved bruk av elektrofysiologiske målinger av nerveimpulser

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14

Bendiksen, Eldar Åsgard. "Environmental effects on lipid nutrition of farmed Atlantic salmon (Salmo salar L.) parr and smolts." Doctoral thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for biologi, 2003. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-511.

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The aim of this study was to investigate the effects of water temperature and salinity on lipid nutrition of farmed Atlantic salmon (Salmo salar L.) parr and smolt. Salmon parr were held at low water temperature (2°C) for six months while being fed feeds that differed in oil source (i.e. marine fish oil or vegetable oil blend) and concentration (low, 21% and high, 34%). The responses at low temperature were compared with those of fish held at 8°C using full-factorial design. Feeding and growth were maintained at 2°C, although at lower rates than at 8°C. Growth and feed utilisation improved ove

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15

Hedbom, Jenny. "Vattnets funktion och utformning i en modern trädgård." Thesis, University of Gävle, Department of Mathematics, Natural and Computer Sciences, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-3422.

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16

Wahlström, Katrin. "Sediment Requirements for Freshwater Pearl Mussel (Margaritifera margaritifera) Recruitment : Sedimentkraven för Rekrytering hos Flodpärlmussla (Margaritifera margaritifera)." Thesis, Karlstad University, Division for Environmental Sciences, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-571.

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<p>Abstract</p><p>The sediment requirements for freshwater pearl mussel (Margaritifera margaritifera) recruitment, in 18 rivers in the counties of Västra Götaland, Örebro, Värmland and Västmanland in Sweden, were investigated. The top 4 cm of sediment in the rivers was analysed in terms of size, distribution and organic compound within the fine sediment. The aims of the study were to determine whether there is a relation between sediment particle size compound and freshwater pearl mussel recruitment as well as between organic compound in fine sediment and recruitment of mussels. The study show

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17

Robeck, Alexandra. "Pseudevernia furfuracea - patterns of diversity in a shrubby lichen." Thesis, Södertörn University College, School of Life Sciences, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-1320.

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<p>Pseudevernia furfuracea is a shrubby lichen commonly found around the Baltic Sea. The lichen appears to reproduce mainly by producing isidia, propagules of the lichen cortex. It is very morphologically and chemically diverse and can be found on different substrates, such as nutrient poor bark trees and rocks. The main objective of this study was to describe genetic variation in the ITS region and link this to variations in morphology, substrate ecology and secondary chemistry. In total, 36 specimens of P. furfuracea were collected from 21 sites in Sweden, Finland and Estonia. Seven haplotyp

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18

Kuruvilla, Jacob. "Localization, functional analysis and physiological role of Anion Transporter 3 (Arabidopsis Thaliana)." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-18938.

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In this project, the maintenance of dynamic cycling of inorganic phosphate is discussed in terms of a phosphate transporter, ANTR3. Reverse genetics are applied with the help of bioinformatics and other web based tools which provided valuable initial information. The model organism Arabidopsis thaliana, both wild-type and mutants was cultivated hydroponically. Screening for homozygotes proceeded standardization of a protocol for isolation of plastids from the roots of these plants. Presence and absence of protein in root plastids was confirmed by western blotting in wild-type and mutants respe

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19

Holler, Silvia. "Droplet based synthetic biology: chemotaxis and interface with biology." Doctoral thesis, Università degli studi di Trento, 2018. https://hdl.handle.net/11572/369014.

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Life-like behaviors such as fission, fusion and movement can be artificially re-created exploiting highly simplified protocell systems. This thesis is mainly focused on chemotaxis protocell systems and their integration with biological systems in order to show potential future applications. 1-Decanol droplets, formed in an aqueous medium containing decanoate at high pH, become chemotactic when a chemical gradient is placed in the external aqueous environment. We investigated the behavior of these droplets, their ability to transport and deposit living and non-living objects and to interface th

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Holler, Silvia. "Droplet based synthetic biology: chemotaxis and interface with biology." Doctoral thesis, University of Trento, 2018. http://eprints-phd.biblio.unitn.it/3465/1/tesi_dottorato_Holler_finale.pdf.

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Life-like behaviors such as fission, fusion and movement can be artificially re-created exploiting highly simplified protocell systems. This thesis is mainly focused on chemotaxis protocell systems and their integration with biological systems in order to show potential future applications. 1-Decanol droplets, formed in an aqueous medium containing decanoate at high pH, become chemotactic when a chemical gradient is placed in the external aqueous environment. We investigated the behavior of these droplets, their ability to transport and deposit living and non-living objects and to interface th

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21

Savolainen, Linda. "Transcription Associated Recombination in Mammalian Cells." Doctoral thesis, Stockholm : Department of Genetics, Microbiology and Toxicology, Stockholm University, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-38931.

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Diss. (sammanfattning) Stockholm : Stockholms universitet, 2010.<br>At the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 3: Manuscript. Paper 4: Manuscript.

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22

Nygren, Daniel. "Direkta effekter av insekticiden deltametrin på zooplankton och bottenfauna : en fältstudie av bieffekter av insekticidinducerad eliminering av signalkräfta på Gotland." Thesis, Gotland University, Department of Biology, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hgo:diva-280.

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<p>Direct effects of the insecticide deltamethrin on zooplankton and benthic invertebrates werestudied during an attempt to eradicate signal crayfish. In accordance with earlier studies theresults of this investigation showed that deltamethrin is highly toxic for arthropods, whileRotifera, Oligochaeta and Mollusca have a higher tolerance. This study concludes thatRotifera in treated ponds coped with the actual concentration of deltamethrin used during theeradication attempt but that they probably got a different abundance and changed compositiondue to a new situation in competition and predati

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Nygren, Daniel. "Födoval hos juvenil piggvar (Psetta Maxima) : effekter av bytesstorlek." Thesis, Gotland University, Department of Biology, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hgo:diva-281.

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<p>The effects of prey size on prey choice in different cohorts of juvenile turbot (Psetta maxima)were studied in three nursery areas at Gotland. Prey length measurements showed that gobies(Gobiidae) increased in average length during the season, while mysids (Mysidae) did not.Experiments on predation capacity of different size classes of turbot on different size classesof prey showed that juvenile turbot easily can eat gobies that are up to two thirds of their ownbody length, while the body size of turbot does not have any effect on the predation capacityon mysids. Stomach content of 217 turb

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Rekestad, Sarah Emilia Megan. "En Jord En Hälsa : Naturens betydelse som hälsofrämjande forum inom ramen för hållbar utveckling." Thesis, University of Gävle, Department of Mathematics, Natural and Computer Sciences, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-3216.

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Kårsjö, Marie. "Ogräsets Varande : - användning istället för utrotning." Thesis, University of Gävle, Department of Mathematics, Natural and Computer Sciences, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-3218.

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Uddevik, Pia. "Modern trädgårdsdesign med den kinesiska vishetsläran Feng shui." Thesis, University of Gävle, Department of Mathematics, Natural and Computer Sciences, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-3236.

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Wesström, Juhlin Josephina Johanna. "Lövstabruks köksträdgård och dess trädgårdsmästare." Thesis, University of Gävle, Department of Mathematics, Natural and Computer Sciences, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-3239.

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28

Bergroth, Sylvia. "Öppna dörren och gå ut! : Om utemiljöns betydelse för lärande." Thesis, University of Gävle, Department of Mathematics, Natural and Computer Sciences, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-3256.

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29

Didriksson, Annica. "Klimatanpassade lignoser för Norrland : en studie med historisk tillbakablick, nutidsanalys och blick mot framtiden." Thesis, University of Gävle, Department of Mathematics, Natural and Computer Sciences, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-5924.

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<p>Varför är utbudet av lignoser så begränsat för Norrland? Vilka faktorer spelar in för en växts härdighet, och hur bedrivs och prioriteras arbetet för att bredda produktutbudet av lignoser för växtzonerna V-VIII? Anser personer inom branschen att det idag finns behov av några speciella sorters lignoser för de högre växtzonerna? Hur ser forskarna på klimatförändringarnas påverkan på klimatet och växterna i framtiden? Detta examensarbete grundar sig på en litteraturstudie och telefonintervjuer, och har till syfte att kartlägga det arbete som gjorts och görs för ett breddat produktutbud av lig

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Myhr, Malin. "Ett designförslag på en trädgård vid ett särskilt boende för personer med demenssjukdom : en pocessbeskrivning." Thesis, University of Gävle, Department of Mathematics, Natural and Computer Sciences, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-6152.

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<p><strong><p>Sammanfattning</p><p>Syftet med examensarbetet var att utföra ett designförslag på en trädgård för personer med</p><p>demenssjukdom. Genom litteraturstudier och enkätundersökning har jag fått kunskap om hur</p><p>en trädgård för personer med demenssjukdom bör se ut och vad den bör innehålla. När man</p><p>utformar en trädgård för personer med demenssjukdom är inte syftet att rehabilitera, utan att</p><p>ge dem god livskvalitet. Detta kan man göra genom att skapa en trädgård med växter och</p><p>material som stimulerar sinnet. Via enkätundersökningen har jag fått möjlighet att ta

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31

Eriksson, Carina. "Hälsofrämjande utemiljöer vid seniorboenden." Thesis, University of Gävle, Department of Mathematics, Natural and Computer Sciences, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-6255.

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Hilmersson, Lina. "Bentiska evertebraters förekomst i källor på Öland." Thesis, University of Kalmar, School of Pure and Applied Natural Sciences, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hik:diva-1405.

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<p>Abstract</p><p> </p><p>The benthic macroinvertebrate fauna of 22 natural springs on Öland was sampled, by using a time-standarized kick/sweep sampling technique, in the end of September and early October. The aim was to determine the number of species and their abundances in the macroinvertebrate communities in springs and how/why these may change between different springs. Likewise there was a purpose to investigate possible differences between springs considering the proportions of the number of species and the abundances of the five functional feeding groups; shredders, collectors, filte

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Sandberg, Helene. "Biodiversitet av evertebrater på vegetativa tak." Thesis, University of Skövde, School of Life Sciences, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-3907.

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<p>In a city sometimes conflicts arise between either to save the species-rich vacant lots where many species thrive, or to build new buildings. Green roofs can then serve as a refuge for plants and animals that have had their natural habitat destroyed or diminished. Today we know too little about green roofs contribution to the biodiversity in the cities. We also know very little about how various types of vegetation on roof can increase biodiversity and its ability to attract different species.The aim with this study was to examine how different types of vegetation on the roofs affect the bi

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Hellner, Qarin. "Mångfotingar i stäppartade torrängar, Västergötland." Thesis, University of Skövde, School of Life Sciences, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-4215.

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Ulvholt, Mikael. "Bottensedimentets betydelse för flodpärlmusslans föryngring – en metodutveckling." Thesis, Kristianstad University College, Department of Mathematics and Science, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:hkr:diva-3327.

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<p>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 th

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Persson, Martin, and Lisa Ragnarsson. "Allmogeåker i teori och praktik - anläggning av en allmogeåker i nordvästra Kristianstad samt utvärdering av kornet Ymer, Gotlandsråg och hotade åkerogräs." Thesis, Kristianstad University College, Department of Mathematics and Science, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:hkr:diva-3470.

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<p>Människan har brukat jorden sen många tusen år tillbaka. Förmågan att förändra</p><p>odlingslandskapet och påverka dess utseende och innehåll har dock varit störst efter andra</p><p>världskriget. Många av jordbrukslandskapets arter är synantroper dvs. att de direkt eller</p><p>indirekt är beroende av människan för sin existens. Dessa arter har varit människans</p><p>följeslagare i tusentals år. Åkerogräsen har kunnat öka och finna goda tillväxtchanser i</p><p>dåtidens odlingslandskap men efter andra världskriget ökade mekaniseringen och</p><p>användandet av herbicider och konstgödning i det

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Ledström, Maria, and Andreas Svensson. "Lantbruksbaserad biogasproduktion - miljö- och energivinster." Thesis, Kristianstad University College, Department of Mathematics and Science, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:hkr:diva-3513.

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<p>Klimatförändringar i världen är ett stort problem där alla måste hjälpa till för att stävja dess inverkan på vår livsföring. Ett problem är utsläppen av växthusgaser där djurhållningen står för en viss del. Vid djurhållning sker det en avgång av metangas både genom matsmältning och genom gödselproduktion där endast den sistnämnda är påverkbar till en rimlig kostnad. För att beräkna avgången av metan från djurhållningen i Helsingborgs stad måste man göra en inventering av djurantalet. Ett bra sätt för att utvinna metangas ur gödseln är att röta den och sedan förbränna den till koldioxid och

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Hatakka, Ulrica, and Camilla Åberg. "En utvärdering av temperaturproblem samt närsaltsbelastning i odlingsdammarna och Flugströmmen i Harasjömåla." Thesis, Kristianstad University College, Department of Mathematics and Science, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:hkr:diva-3874.

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<p>This bachelor’s project deals with both the problems of high water temperatures in fishponds at a fish-breeding station and of the nutrient load to nearby lakes and streams in Harasjömåla, Blekinge, Sweden. Theory, methods and results of the analyses are presented in the report.</p>

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Gunnarsson, Helena, and Ana-Maria Sanseovic. "Possible Linkages Between Algae Toxins in Drinking Water and Related Illnesses in Windhoek, Namibia." Thesis, Kristianstad University College, School of Engineering, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:hkr:diva-4761.

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<p>The sub-tropical climate in Namibia, together with nutrients in the water, creates a good environment for phytoplankton, especially cyanobacteria. Many of these produce toxins that can be harmful to people and animals. One of the algal toxins is microcystin. This toxin is hepatotoxic, i.e. the primary toxic effect is on the liver. Cases of gastro-enteritis, nausea, vomiting, diarrhoea, muscle weakness and paralysis have been associated with the consumption of water containing high numbers of blue-green algae all over the world.</p><p>The aim of this study was to chart the possible linkages

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Sjöberg, Andreas. "Energibalans för rötkammaranläggningen vid centrala reningsverket i Kristianstad för olika driftalternativ." Thesis, Kristianstad University College, School of Health and Society, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hkr:diva-4780.

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<p>Det Svenska miljömålet om återföring av växtnäring till produktiv mark, har gjort att ett initiativ till certifieringsregler för återföring av avloppsslam tagits fram. Som en viktig del i dessa certifieringsregler krävs det att slammet måste vara hygieniserat. På centrala reningsverket i Kristianstad vill man använda sig av termofil rötning som hygieniseringsmetod. Termofil rötning innebär en höjning av temperaturen i rötkamrarna med ca 19 °C.</p><p>Denna rapport syftar till att göra en jämförelse av energiutbyte och ekonomi vid olika driftsbetingelser för rötkammaranläggningen.</p><p>I rap

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Jansson, Ann. "Hur arbetar förskolan med barn i behov av alternativ och kompletterande kommunikation." Thesis, Karlstad University, Faculty of Social and Life Sciences, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-1675.

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<p>Sammanfattning</p><p>Syftet med rapporten var att ta reda på hur förskolan anpassar lärandesituationer för barn i behov av Alternativ och Kompletterande Kommunikation (AKK) samt hur AKK används vid naturkunskapsundervisning. Metoderna för rapporten är observation och intervjuer. Jag sökte information via Internet, litteratur och rapporter. Huvudresultatet av rapporten visar att förskolan arbetar med tecken som stöd, objekt, gester, ord, bilder, sinnen och Karlstadmodellen. Undervisning sker i naturliga situationer och enskilt barn – pedagog. Pedagogers utbildning, fortbildning och handledni

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Stridqvist, Mikael. "Inverkan av skilda koncentrationer av aluminium på nitratupptaget hos veteplantor (Triticum aestivum L.)." Thesis, Karlstad University, Faculty of Social and Life Sciences, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-1711.

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<p>Syftet med detta arbete var att undersöka huruvida trevärt aluminium, Al3+, inverkar på nitratupptaget hos veteplantor (Triticum aestivum L.). Vidare avsågs att undersöka om koncentrationen av jonen ifråga är av betydelse. Hypotesen som testades var att trevärda aluminiumjoner verkar hämmande på nitratupptaget och att hämningsgraden stiger med ökad koncentration av aluminium. I försöket användes veteplantor som togs i bruk på sjunde dagen efter det att de planterats i vermikulit. Provlösningarna utgjordes av fyra stamlösningar som endast skilde sig åt med avseende på aluminiumjonskoncentrat

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Wallsten, Margareta. "Växters förmåga att ackumulera metaller : Vass, bredkaveldun och gäddnate i Bergviks dagvattendamm." Thesis, Karlstad University, Faculty of Social and Life Sciences, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-1712.

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<p>Abstract</p><p>Surface-water includes different kinds of pollutants from traffic and roads. To prevent these pollutants to reach nearby lakes one can construct surface-water ponds on locations with heavy traffic. At Bergviks shopping centre in Karlstad, two ponds, one smaller and one bigger has been constructed in order to decrease the pollutant pressure from the receiving waters of Kattfjorden. Several heavy metals are essential for plants and animals in low concentration but when they occur in higher concentrations, they become toxic to the organism. The larger pond at Bergviks shopping c

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Andersson, Frida. "Vikten av utevistelse inom förskolan : En studie av pedagogers tankar och syften med utevistelse." Thesis, Karlstad University, Faculty of Social and Life Sciences, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-2231.

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<p>I min undersökning har fem pedagoger genom strukturerade intervjuer fått svara på frågor om utevistelsen på förskolan. Syftet var att ta reda på vad pedagogerna själva hade för tankar och syften bakom utevistelsen, samt hur de arbetade med detta. Frågorna gällde både vistelsen i den planerade miljön på gården och i naturen.</p><p>Pedagogerna fann mestadels fördelar med utevistelse på förskolan. Några av fördelarna som nämndes var god motorikträning och social träning. Sedan belystes även vikten av ”frisk luft” och att pedagogerna upplevde barnen som piggare om de vistades utomhus emellanåt.

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Harfacha, Khalid. "Kunskap i biologi hos invandrarelever : En undersökning på en grundskola i Västra Götaland." Thesis, Karlstad University, Faculty of Social and Life Sciences, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-2267.

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<p>The main purpose of this study was to examine the knowledge in biology by immigrant pupils. My investigation is based on the pupil and I have focused on positive and negative factors that affect their performance in biology.</p><p>The study is based on marks in year 2006/2007, a survey and interviews made with four immigrant pupils at a compulsory school in Västra Götaland.</p><p>The study indicates that the result in biology of immigrant pupils is lower compared to Swedish.</p><p>Difficulties in language, the commitments by their parents and their surroundings are the main factors that aff

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Lindh, Anette. "Genusskillnader i förskolans olika miljöer. : En undersökning om hur pojkar och flickor behandlas/bemöts olika i förskolan." Thesis, Karlstad University, Karlstad University, Karlstad University, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-3489.

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<p>One of the importent things that preschool has to learn are to treat each other as different individuals. That´s why It´s sp importent that we as pedagogues are aware of the fact that boys and girls are treated different so we can act of our experiences and learn to concentrate on the childrens individuals. We as adults have to set a good exampel.</p><p>The aim of this stydy was to find out if the pedagogues treat the children different because of their gender. The purpose was also to se if there were any differences when the children were indoor or outdoor. This study is based on eight obs

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Olsson, Peter. "Human Male Superiority in Olfactory Sensitivity to the Sperm Attracting Odorant Bourgeonal." Thesis, Department of Physics, Chemistry and Biology, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-19869.

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<p>The present study aimed at assessing possible gender differences in human olfactory detection thresholds for three odorants; bourgeonal, an aromatic aldehyde, helional, a structural analogue of bourgeonal, and n-pentyl acetate, an aliphatic ester. A total of 500 subjects, 250 males and 250 females between 18 and 40 years of age, were tested using a triangular forced choice method with an ascending staircase procedure. The subjects were asked to sniff the contents of three bottles and to identify the one containing the stimulus presented at a given concentration. Males were found to have a

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Magige, Flora John. "The ecology and behaviour of the Masai Ostrich (Struthio camelus massaicus) in the Serengeti Ecosystem, Tanzania." Licentiate thesis, Norwegian University of Science and Technology, Faculty of Natural Sciences and Technology, 2008. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-1951.

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Herfindal, Ivar. "Life history consequences of environmental variation along ecological gradients in northern ungulates." Doctoral thesis, Norwegian University of Science and Technology, Department of Biology, 2006. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-706.

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<p>Temporal and spatial variation in the environment can influence the performance of individuals in wild ungulate populations. Of particular importance is an understanding of the mechanisms that shape variation in individual body mass, because several important life history traits are directly related to body mass. Body mass is one of the first traits that is influenced by environmental variation, and often the effect operates through variation in the components of the foraging niche of ungulates. In this thesis, I aim to demonstrate how measurements of environmental variation relate to varia

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Murvoll, Kari Mette. "Levels and effects of persistent organic pollutants (POPs) in seabirds. Retinoids and a-tocopherol - potential biomarkers of POPs in birds?" Doctoral thesis, Norwegian University of Science and Technology, Department of Biology, 2006. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-712.

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<p>In the present thesis, levels of polychlorinated biphenyls (PCBs), some chosen organochlorine pesticides (OCPs), polybrominated diphenyl ethers (PBDEs) and hexabromocyclododecane (HBCD) were analyzed by gas chromatography in the yolk sac of newly hatched chicks of European shag (<i>Phalacrocorax aristotelis</i>), kittiwake (<i>Rissa tridactyla</i>), Brünnich’s guillemot (<i>Uria lomvia</i>) and common eider (<i>Somateria mollissima</i>) from the Norwegian coast and Svalbard. Levels of vitamin A (retinol), retinyl palmitate and vitamin E (α-tocopherol) were measured in plasma and liver of th

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