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JANSSON, ULRIKA, and MARIA HALVARSSON. "Torr utan gifter?" Thesis, Högskolan i Borås, Institutionen Textilhögskolan, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-17363.
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Arbetet har utförts i samarbete med Naturskyddsföreningen för att undersöka vilka vattenavvisande behandlingar som görs på ytterplagg för barn och hur tillverkarna förhåller sig till perfluorerade ämnen. I arbetet har vattenavvisande ytterplagg för barn i förskoleåldern studerats, med syfte att se i vilken mån perfluorerade ämnen används i plaggen. Barnen som har studerats är utomhus varje dag i alla väder. Vid kraftigt regn eller när det är mycket blött ute används vattentäta regnställ, vid lättare väta bär de ytterplagg med vattenavvisande funktion. En egen oljedropptestmetod har utvecklats. Testet har utförts på de plagg som hänger på förskolorna. Det finns flera typer av vattenavvisande behandlingar. De vanligaste är perfluorerade ämnen, silikoner, dendrimerer och vaxer. De har olika egenskaper och funktioner sinsemellan. De perfluorerade ämnena har den bästa vattenavvisande förmågan och de är också de enda som är oljeavvisande. Perfluorerade ämnen är persistenta, bioackumulerande, hormonstörande och toxiska. Hormonstörande ämnen kan bidra till fetma, cancer, neurologiska störningar, fortplantningsstörningar och missbildningar. Silikoner har goda vattenavvisande egenskaper. Råvaran till silikoner är persistent, bioackumulerande och toxisk. Även dendrimerer har goda vattenavvisande egenskaper. Lite är känt om miljö- och hälsopåverkan men partiklar i nanostorlek kan potentiellt ta sig in cellerna och orsaka cancer. Inga allvarligare miljö- och hälsokonsekvenser av vaxer/paraffiner har hittats. De har sämre vattenavvisande egenskaper, påverkar greppet och tål tvätt och nötning dåligt. De kläder som används på förskolorna håller generellt barnen torra, men en försämring kan märkas på gamla eller dåligt konstruerade plagg. Ytterplagg som behandlats med perfluorerade ämnen är vanliga. Företagen har fasat ut perfluorerade ämnen under de senaste åren, planerar att byta ut dem eller har vidtagit åtgärder enligt Reach. Dendrimerer är det vanligaste alternativet till perfluorerade ämnen. Inga krav förekommer från vare sig företag eller användare på att plaggen ska vara smuts- och oljeavvisande.Program: Textilingenjörsutbildningen
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Ayala, Chairez Felix. "Physiology of salt tolerance in Salicornia bigelovii Torr." Diss., The University of Arizona, 1994. http://hdl.handle.net/10150/186621.
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Growth of most crop plants (glycophytes) is reduced in saline environments. A few plant species (euhalophytes) not only tolerate, but require salt, and grow optimally in salinities between 100 and 200 mM NaCl. The halophyte Salicornia bigelovii Torr. shows optimal growth in 200 mM NaCl and reduced growth in low saline conditions. In spite of years of research, mechanisms that confer salt tolerance to some plants and sensitivity to others are poorly understood. This research was undertaken to obtain physiological information in an attempt to determine why S. bigelovii requires salt to reach maximum growth. Salicornia seedlings were grown in the greenhouse in aerated nutrient solutions with 5, 200 or 600 mM NaCl. Plants grown in 200 mM NaCl showed optimal growth. Fresh and dry weight of the plants were reduced when grown in 5 and 600 mM NaCl. The main differences in plants grown in 5 and 600 mM NaCl had to do with ion accumulation. These differences in ion accumulation suggested that salt tolerance in Salicornia was established by regulation of ion transport. This was confirmed by studying two primary transport systems in plants grown in 5 or 200 mM NaCl. These transport systems are the H⁺-ATPases on the plasma membrane (PM-ATPase) and the tonoplast (V-ATPase). Higher PM-ATPase (55%) activities were observed in 200 mM NaCl grown plants. Increases in growth and in PM-ATPase activity in Salicornia shoots after exposure to salinity were highly correlated. V-ATPase activity was significantly stimulated in vivo and in vitro (26 and 46%) after exposure to 200 mM NaCl, and this stimulation was Na⁺-specific. Increased V-ATPase activity was consistent with an increased Na⁺ accumulation (45%) compared to plants grown in 5 mM NaCl. Na⁺-stimulation of ATPases may confer salt tolerance in Salicornia by providing the driving force for regulation of intracellular Na⁺ levels. The ATPases provide an increased H⁺ electrochemical gradient across membranes that may be used by the Na⁺/H⁺ exchangers on the plasma membrane and tonoplast. In addition, H⁺ transport across the plasma membrane leads to acidification of the apoplast that is required for cell wall extension and growth. These transport systems need to work in concert for optimal growth and salt tolerance.
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Freeman, C. Edward, and William H. Reid. "Aspects of the Reproductive Biology of Agave lechuguilla Torr." University of Arizona (Tucson, AZ), 1985. http://hdl.handle.net/10150/554210.
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Agave lechuguilla Torr. is a small, widespread century plant characteristic of the Chihuahuan Desert growing from central Mexico to southern New Mexico. Most reproduction is vegetative. Flowering occurs primarily in May and June. The inflorescence shaft grows as rapidly as 2 dm/day, and reaches full height (about 2.6 m) in three to four weeks. Energy for flowering is stored almost entirely in the leaves. Flowers open in late afternoon, and last for approximately 96 hours. Anthers dehisce 24 hours after a flower opens and the stigma becomes receptive at approximately 66 hours. Nectar is produced during the second and third nights. The anatomy of the flower is of interest in that the pollen tubes do not penetrate tissue but have an unobstructed path to the ovules. The species is capable of self-pollination, but not apomixis.
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Pfister, Rachel Walker 1940. "Limits to growth of Salicornia bigelovii Torr. at suboptimal salinity." Diss., The University of Arizona, 1999. http://hdl.handle.net/10150/282867.
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In spite of the fact that it is one of the most widely researched subjects in plant biology, the physiology of salt tolerance is still not well understood. This research was undertaken to investigate salt tolerance in the extreme halophyte, Salicornia bigelovii Torr. Halophytes, plants that are naturally salt tolerant, are well suited to research on salt tolerance because millions of years of evolution have fine tuned their adaptation to high salinity to the extent that their growth is inhibited when they are grown in reduced salinity. S. bigelovii was grown in different concentrations of NaCl and growth responses were compared. My emphasis was on salinity effects on cell wall extensibility, wall yielding threshold (minimum turgor required for growth), and water relations. When S. bigelovii was grown in low salinity, relative growth rate was slower, fresh and dry weight, relative water content and succulence were reduced, and both epidermal and cortex parenchyma cells were smaller. The plants also accumulated less Na⁺ and more K⁺, Ca²⁺ and Mg²⁺. These results prompted two specific questions. Was the excess Ca²⁺ accumulated by the plants grown in low salinity bound to cell walls and did it cause reduced cell wall extensibility and increased yield threshold? Was growth inhibition a consequence of low turgor due disturbances in water relations? Even though there was three times more Ca²⁺ in the walls of the plants grown in I salinity, cell wall extensibility was not significantly different between salinity treatments. However, the wall yielding threshold of the plants grown in low salinity was significantly lower. Turgor was also significantly lower in these plants. But, since the minimum turgor required for growth was even lower, reduced turgor was not responsible for growth inhibition. Based upon the results of this research, I have concluded that growth inhibition in S. bigelovii in reduced salinity was not due to disturbances in water relations nor was it the result of detrimental changes in cell wall properties. It is becoming increasingly clear that specific ion effects play an important role in limiting the growth of S. bigelovii in low salinity. This research has led to the identification of several new directions for future investigation into the salt tolerance mechanisms of this unique plant.
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Andrea, Tomas de Pisani Maria. "Ecological significance of the genetic variation in Bouteloua curtipendula (Michx.)Torr." Texas A&M University, 2004. http://hdl.handle.net/1969.1/1394.
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The two most common varieties of the grass Bouteloua curtipendula (Michx.)Torr. in North America use different strategies of clonal growth and have contrasting continental distributions. Variety caespitosa (phalanx form) ranges from central Texas westward to Arizona and California and var. curtipendula (guerrilla form) occurs in a more mesic region over the North American Great Plains. This study sought to determine whether the strategies had an ecological significance and investigated the possible relationship between changes in environmental factors and characteristics of each clonal growth strategy.
Varieties showed to be morphologically variable, but the variability did not follow the pattern of the precipitational gradient. The abundance of var. curtipendula was related to soil depth and parent material (limestone types). Abundance of var. caespitosa could not be explained by any environmental factor separately. The performance of clones of the two growth forms in response to changes in resource availability (light and nutrients) and defoliation suggested similarities between the varieties in photosynthetic rate and only showed differences in water potential under extreme conditions. The major differences were related to the proportion of biomass allocated to structures related with seed production versus propagation by rhizomes. Intra-variety genetic variation for several life history traits was detected even with a very small sample size. The caespitose growth form showed more biomass and rate of tiller recruitment after defoliation on average, but responses between genotypes were dissimilar. Varieties also showed levels of plasticity in the allocation to reproductive structures in response to environmental factors.
Responses to fire were compared between varieties by experimental burnings with increasing load of artificial fuel. Plants of the two varieties reached similar maximum temperatures although var. caespitosa suffered temperatures considered to be lethal for longer periods of time. Results from this study suggested that, although characteristic of the pattern of clonal growth were not distinctly associated to resource availability or defoliation, distribution of the varieties may be related to a combination of biotic and abiotic factors beyond the factors studied here.
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Fayed, Manal A. "Metabolite variation in ecologically diverse black cottonwood, Populus trichocarpa Torr. & A. Gray." Thesis, University of British Columbia, 2011. http://hdl.handle.net/2429/32015.
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Black cottonwood (Populus trichocarpa Torr. & A. Gray) is mass productive tree species native to the Pacific Northwest of North America. Gas chromatography - mass spectrometry was used to study the metabolic profiling of leaves from multiple genotypes to investigate the presence of clinal trends in metabolite levels and to determine if relationships with geo-climatic variables and date of bud set exist. In the late summer (September 3rd) of 2008, young leaves were collected from the species’ range and represented by 106 clones grown in a common garden established in Vancouver, British Columbia, Canada. The results validity was verified through the use of two independent canonical correlation analyses (CCA) that were performed on the intensity of the detected 104 compounds, including 40 known metabolites. Principle Component Analysis (PCA) was performed for original variables reduction and to determine the principle components accounting for most of the variation (the first ten PCAs accounted for 63% of the variation). The first analysis utilized the metabolites associated with the first ten principal components to determine the relationship between the original metabolites and geography, climate and date of bud set, while the second was based on the first ten principal components themselves. Both analyses yielded strong to moderate trends but the correlations (ranging from 0.45 to 0.97) were not statistically significant most likely due to the small sample size used. Based on the analyses conducted, it appears that P. trichocarpa ecotypes are preconditioned to suite their location-origin and the observed differences in metabolites reflected the genotypic variability among the studied trees.
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Kshirsagar, Meenakshi K. "Isolation and characterization of a vacuolar Na⁺/H⁺ exchanger in Salicornia bigelovii Torr." Thesis, The University of Arizona, 2002. http://hdl.handle.net/10150/292070.
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The work in this thesis provided critical information about the vacuolar Na⁺/H⁺ exchanger in Salicornia bigelovii with a goal to understand its role in plant salt tolerance. A cDNA (SbNHX1) was isolated and showed 87% identity to the Na⁺/H⁺ exchanger from the glycophyte, Arabidopsis thaliana. DNA blot analysis suggests the presence of a family of Na⁺/H⁺ exchangers in Salicornia bigelovii . An increase in SbNHX1 transcript was seen in shoots of 200 mM NaCl-grown plants compared to transcript levels in 5 mM NaCI-grown plants. To understand whether the SbNHX1 cDNA conferred increased salt tolerance by virtue of its unique sequence, the coding region of SbNHX1 was cloned for expression in Arabidopsis thaliana . Potential Ca⁺² regulation of vacuolar Na⁺/H⁺ exchange is shown using transport experiments. The isolation of a vacuolar Na+/H+ exchanger from Salicornia bigelovii and its functional expression in Arabidopsis thaliana will provide information on the salt tolerance mechanisms used by halophytes. (Abstract shortened by UMI.)
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Söderqvist, Sara. "En torr Chablis till stekt strömming : En studie i arkitekturkritik av Bo01 och BoStad02." Thesis, Uppsala University, Department of Social and Economic Geography, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-126956.
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Komorowska, Marta. "Luftprovtagning samt analys av mono- och diisocyanater." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-85247.
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When exposed to them, isocyanates can induce serious injuries in the respiratory tract and irritation on the skin and in the eyes. They are therefore interesting from the point of view of occupational health. The purpose of this thesis was to collect isocyanates in air with impinger-filter samplers and solvent free samplers. Furthermore the isocyanates were to be analyzed with liquid chromatography-mass spectrometry. The solvent free sampler consists of a polypropylene tube and filter holder fitted with glass fiber filters impregnated with derivatization reagent, coupled with a pump. The impinger-filter sampler was made out of an impinger flask, containing a derivatization solution, coupled in series with a filter holder and a pump. Di-n-butylamine was used as derivatization reagent in both samplers to stabilize the reactive isocyanates and to enable mass spectrometric detection. The solvent free sampler is highly advantageous because of its user friendliness during field measurements, as opposed to the impinger-filter method. An exposure chamber, equipped with two interior fans to ensure good circulation, was used to generate an atmosphere containing isocyanates. Analyzing the isocyanate-DBA derivates with LC-MS/MS worked very well and the method made it possible to detect isocyanate levels below 1 ng/mL. During quantification of isocyanates a standard curve with concentrations from 1 to 1000 ng/mL was used. Detection of isocyanate levels as low as one fifth of the limit value of some isocyanates was found to be possible, which would indicate that the methods are sensitive. Even though the solvent free sampler worked, the impinger-filter sampler was found to be more effective in collecting isocyanates. The coefficient of variation calculated from concentrations of isocyanates from the solvent free sampler varied between 0-35 %. The reason for this might be due to the fact that an optimized extraction method had not been tried out within the time limit of this project. Questions, identified during this thesis work, need to be answered before being able to obtain reliable results from field measurements with the solvent free sampler.
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Momayyezi, Mina. "Physiological basis of variation in mesophyll conductance of black cottonwood (Populus trichocarpa Torr. & Gray)." Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/61268.
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There is dramatic provenance level variation in tree species with geographically wide ranges. For example, in Populus trichocarpa Torr. & Gray, net photosynthesis (An) and stomatal conductance (gs) both increase with latitude of origin. This thesis reports a parallel cline in mesophyll conductance (gm) and explores its physiological basis. In addition to anatomical constraints, variation in gm should depend on chloroplast positioning, transmembrane CO₂ diffusion through aquaporins (AQPs), and biochemical facilitation of the CO₂↔HCO₃− equilibrium by carbonic anhydrase (CA), but evidence for the former has been lacking. I found that gm increases with latitude across 12 genotypes, as measured by chlorophyll fluorescence, and confirmed this pattern by the isotope discrimination method in six representative genotypes. Northern genotypes had greater CA activity. An inhibitor of CA, acetazolamide, reduced CA activity, gm, gs, chloroplast CO₂ concentration and An at normal CO₂ (400 µmol mol-¹), the latter being reversible at saturating CO₂. The relationship between CA activity and gm was similar whether the variation was inherent or inhibitor-induced. I then explored the role of chloroplast positioning in relation to gm, driven by the ratio of blue (BL) to red light supplied to leaves. Repositioning was manifested by a reversible decrease in chlorophyll content index (CCI), while actual chlorophyll content remained unchanged. Although gm was found to decrease as BL increased, and more so in northern genotypes, cytochalasin D, an inhibitor of chloroplast motility, blocked the effect of BL on CCI but not gm, suggesting that BL can mediate gm independently of repositioning. High BL reduced CA activity, consistent with a possible reduction in protein-facilitated diffusion, which might also involve AQPs. I found that the AQP inhibitor mercuric chloride reduces gm more in northern genotypes than in southern genotypes, both absolutely and proportionally, but also reduces CA activity. Although greater gm in high-latitude genotypes likely reflects contributions from several components of the liquid-phase diffusion pathway, this thesis draws particular attention to a major role for CA. Because gm is an equal or greater limitation on photosynthesis than gs, these findings may help direct crop improvement efforts to promote resource use efficiencies and yield.Forestry, Faculty of
Graduate
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Bordi, Christophe [Etienne Charles]. "Identification par approche génomique des gènes contrôlés par le système de régulation TorS/TorR en réponse au triméthylamine N-oxyde (TMAO) chez Escherichia coli et Shewanella oneidensis." Aix-Marseille 2, 2004. http://www.theses.fr/2004AIX22011.
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Keir, Karolyn R. "Beautiful but lacking diversity : population genetics of Pacific Dogwood (Cornus nuttallii Audobon ex Torr. & A. Gray)." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/1493.
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In the past, conifers have been the primary focus of population and conservation genetic studies in Pacific Northwest (PNW) trees. These studies have provided tremendous insight as to how genetic diversity varies across species ranges for these wind-pollinated and mostly wind-dispersed species. With this study of Pacific dogwood (Cornus nuttallii), a broadleaved, PNW species, which utilizes biological vectors for pollen and seed dispersal, we hope to broaden our understanding of tree evolutionary dynamics.
Marker development for C. nuttallii found few useful polymorphisms. Of eight microsatellite markers (SSRs) developed from a closely related species, three were monomorphic, while the other five averaged only 4.4 alleles/locus. Furthermore, only a single base pair substitution was found in the rpl16 region of the chloroplast genome after sequencing 2,262 non-coding base pairs in 100 individuals. This lack of diversity, which was found to be ubiquitous throughout the range of C. nuttallii, suggests this species may have endured a prolonged bottleneck in a single glacial refugium prior to recolonization. The cpDNA phylogeographic pattern and a significant decline in both SSR allelic richness (r² = 0.42, p<0.01), and expected heterozygosity (r² = 0.51, p<0.01) support this theory. Low levels of population structure, documented in both chloroplast (D = 0.153) and nuclear genomes (FST = 0.071, RST = 0.036) may suggest high levels of contemporary gene flow between populations are also influencing current patterns of diversity. Despite variation being the precursor for adaptation, a comparison of QST (0.088 for first-year height and 0.113 for bud burst timing) with a refined FST estimate (0.053), indicated that C. nuttallii had either retained or recovered significant phenotypic variation for differential selection to act.
Such uniformly low diversity raises the issue of how genetic conservation efforts should proceed with this and other species sharing a similar degree of genetic depauperateness. So that signs of decline may be detected, we suggest population monitoring, especially for those populations occurring at high elevations. Furthermore, we advocate the transfer of seeds from the nearest southern source, in the event that restorative efforts are required to assist this species to cope with the rapidly changing climate.
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Ratliff, William S., Elaine S. Walker, and Foster Levy. "Demographics and Cronartium appalachianum Rust Disease Assessments in Three Tennessee Populations of Buckleya distichophylla (Nutt.) Torr. (Santalaceae)." Digital Commons @ East Tennessee State University, 2015. https://doi.org/10.2179/15-076.
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A demographic census and disease assessment was conducted in 2007 and 2015 in three Tennessee populations of the dioecious shrub,;Buckleya distichophylla (Santalaceae). Population sizes were relatively stable over time and plant heights and numbers of stems per clump were similar among populations. Seedlings were present in all populations, where they represented 14–19% of individuals. Two populations had an equal male:female sex ratio, but a third population was male-biased. Nonflowering individuals comprised 33–41% of individuals in a population. The majority of plants in all populations had high vigor. Spatial analyses revealed clusters of seedlings in two populations and a cluster of low-vigor plants in one population. Cronartium appalachianum, a rust fungus dependent upon;Pinus virginiana and B. distichophylla as primary and alternate hosts, respectively, was present in all populations with prevalences on B. distichophylla of 19–29%, but there was no spatial clustering of disease in populations. The tree species nearest to B. distichophyllavaried among populations with Tsuga canadensis predominant in one population, T. caroliniana in another, and P. virginiana in the third. Buckleya distichophylla in proximity to P. virginiana had a higher than expected prevalence of C. appalachianum infection.
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Hassan, Nasra. "Hur kan man med hållbara medel öka tillgången på vatten i en torr region? : ‐ En fallstudie i Arabsiyo." Thesis, KTH, Industriell produktion, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-200709.
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Bristen på vatten är ett ständigt aktuellt problem på många regioner runtom i världen. Östafrika en region som har drabbats många gånger av torka är. Värst drabbade ärnomaderna som uppleverfärre betesmarker ochminskade skördar. Detta resulterar ett direktsamband mellan regnvattenmängden och tillgången på spannmål. Vid perioder av minskadeller helt uteblivetregn medför detta brist på dricksvatten men även kraftigt stiganderåvarupriser. Jakten på framtidens hållbara vattenförsörjningssysteminnefattar därmed merän tillgången på vatten. För att möjliggöra seriösa alternativ till de nuvarandevattenförsörjningsystemenkommer således vattenupptagningen i samband medjordbruk tastill hänsyn.Denna studie är en fallstudie i staden Arabsiyo som ligger i det autonoma Somaliland. Syftetmed rapporten är att identifiera hållbara metoder som innebär att trycket på detbegränsade grundvattnet minskar samtidigt som tillgången på vatten ökar.Studien börjademed informationsinsamling i form av grundläggande kartläggning av de naturliga ochsamhälleligaförutsättningarna i området. Detta kompletterades med intervjuer av aktörermed expertis inom mark och vattentekniki studieområdet.Resultat visar att det råder konkurrens om grundvattnet i Arabsiyo som kan leda tillutarmning av grundvattnet. För att minska belastningen på grundvattnet i området förslåssmåskalig regnvatteninsamling via hustak, jorddammar och i berkads. Vidareförordasutveckling av konstgjord grundvattenbildning som en hållbar metodför som bidrartill en ökad tillgång av vatten i området.Studien betonar även vikten av praktiska kunskaper om resurseffektivjordbruksproduktionoch föreslår vidarelokala kooperativ bestående avlokalbefolkningensom ägareoch ansvariga huvudmän för genomförandet av samtliga projekt.The lack of water is a recurring problem in East Africa, particularly the arid regions ofSomaliland. For pastoralists who are directly dependent on rain water, it affects thelivestockthrough reduced harvests. During periods of loss or reduced rainfall, this dry waterwells and increases the commodity prices significantly.In order to develop long‐term sustainable water supply systems in arid regions, it isimportant to be aware of the relationship between depletion of groundwater and adeveloped agricultural production. This report is a case study in the city Arabsiyo, located inthe autonomous Somaliland. The purpose of this study is to identify sustainable practicesthat increase access to water. The study began with the gathering of information in the formof basic mapping of the given natural and societal conditions in the area.The approach wassupplemented with interviews of involved partners with expertise in soil and waterconservation techniques in the study area.The result shows that small‐scale rainwater harvesting and artificial groundwater rechargeare two sustainable practices that contribute greatly to increasing access to water. The studyalso shows that increased awareness about how to grow the resource efficiency is of greatvalue in order to improve water use efficiency.Furthermore the study stresses theimportance of practical knowledge on resource‐efficient agricultural production. Proposedowners of all projects are cooperative consisting of locals as managers of thefinance and theexecution of the projects.
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Johnsson, Anna, and Sixten Engström. "Jakten på en trygg oas i en torr öken : En studie om varför studententreprenörer väljer att delta i självorganiserade företagsnätverk." Thesis, Linnéuniversitetet, Institutionen för organisation och entreprenörskap (OE), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-36061.
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The aim of this study is to, by developing ideal types, describe why studententrepreneurs participate in self organised business network. The investigation is based on answers from 41 participants in the business network “Företagare på Lnu”, as well astwo semi-focused groups, which where analysed by using Webers (1978) ideal types.The investigation shows that there are several reasons for student entrepreneurs to participate in self organised business network. For instance some people participate to gather knowledge from other student entrepreneurs for their own future, since they have an idea of soon starting their own business. Others participate just for the fun of knowing what’s going on at the university.Det behövs ständigt fler företag för att skapa jobb och tillväxt i en ekonomi, samtidigt som det inte är helt enkelt för ett nystartat företag att snabbt komma igång och konkurrera med etablerade och välkända företag. I rollen att utbilda människor till att starta företag, har universiteten blivit allt viktigare då de arbetar med entreprenöriellt lärande. Vid sidan utav sina studier, väljer en del elever att starta företag, och därmed bli så kallade studententreprenörer. För att tillsammans hjälpa varandra i sin uppstartsprocess och vidare i sitt företagande, väljer många unga företagare att gå samman i självorganiserade företagsnätverk.Syftet med den här studien har varit att, genom att använda Webers (1978)idealtypsteori, förklara varför studententreprenörer väljer att delta i självorganiseradeföretagsnätverk. För att studera detta genomfördes enkäter och semifokuserade grupper på nätverket ”Företagare på Lnu”.Resultaten visar att det, i det här fallet, finns nio olika idealtyper i nätverk varav alla söker olika saker. Exempelvis finns individualisten som endast söker utbyte för sin egen del, den nyfikne som är delaktig för att få veta vad som händer och en idealtyp som främst söker inspiration till att snart kunna starta ett eget företag eller projekt.
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Nicole, Marie-Claude. "Caractérisation moléculaire des MAPKKS et des MAPKS chez le peuplier, Populus Trichocarpa (TORR ＆ GRAY), lors de l'infection par la rouille foliaire, Melampsora.spp." Thesis, Université Laval, 2011. http://www.theses.ulaval.ca/2011/27366/27366.pdf.
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Jonsson, Anton. "Rädslans Yta : Är våta varelser mer hotfulla än torra?" Thesis, Högskolan i Skövde, Institutionen för informationsteknologi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-15238.
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Arbetet undersökte hur hotfull betraktaren uppfattade en varelse utifrån olika grader av våta alternativt torra ytegenskaper, genom enbart visuell perception. Arbetet inleds med en genomgång av tidigare forskning kring visuell perception, ytors relationer till fruktan samt hotfullhet i form och färg. Definitioner för begreppen ”Yta” och ”våt- och torrhet” skapades även, med vetenskapliga belägg. Artefakten som skapades för arbetet bestod av 10 stycken 2D-bilder, indelade i två bildserier med olika färgmättnad. Bilderna föreställde en och samma varelse som skapades med olika grader av våt- och torrhet på dess yta. En kvantitativ webbenkät användes för att undersöka respondenterna upplevda hotfullhet hos de olika bilderna. Resultatet visade att respondenterna upplevde bilderna som mer hotfulla ju våtare de blev, men ökningen i hotfullhet var marginell, andra faktorer verkade spela större roll i hur hotfull varelsen upplevdes.
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WONG, HARRY. "Sytråd -lösning i upplösning Att konstruera en upplösningsbar eller nedbrytbar sytråd för förenklad materialsortering." Thesis, Högskolan i Borås, Institutionen Textilhögskolan, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-18002.
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Studien behandlar möjligheten att konstruera en kemiskupplösbar eller nedbrytbarsytråd. Tanken är att sytråden ska underlätta separation av olika material, genom ett mer tidseffektiv sprättningssystem. Valt namn i denna studie för denna funktion är kemisksprättning. Genom litteraturstudier har kunskaper om; processer som våtspinning, stapelgarnsspinning, konstruktionskriterier för sytrådar, egenskaper för kitosanfibrer, katalysering med enzym och upplösning genom protolys hämtats. Praktiska labbförsök för torr- våtspinning av kitosan utförs. De spunna fibrerna karakteriserades genom dragprovning och termogravimetrisk analys. Upplösning av den spunna fibern utförs i en låg koncentrerad ättiksyralösning. Resultaten från de praktiska försöken visar att de spunna kitosanfibrerna inte uppfyllde de krav på mekaniska egenskaperna som ställs på sytrådar. Däremot kunde en snabb upplösning av fiberna i ättiksyra noteras. Enligt den studerade litteraturen går det att uppnå de mekaniska egenskaper som krävs för att spinna sytråd från kitosan. Däremot är det inte möjligt att erhålla lika hög brottstyrka som en universalsytråd.Program: Textilingenjörsutbildningen
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Elfving, Fanny. "PHA-framställning från restströmmar med lösningsmedelsextraktion : En energianalys på PHA-produktion med och utan intern värmeintegrering vid extraktion på torr och våt biomassa." Thesis, Karlstads universitet, Institutionen för ingenjörs- och kemivetenskaper (from 2013), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-85623.
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Polyhydroxyalkanoater (PHA) är en grupp av polymerer som är biobaserade, biologiskt nedbrytbara och som kan uppvisa varierande fysiokemiska egenskaper. Således har PHA potential att ersätta konventionell och fossilbaserad plast så som polypropylen (PP) och polyetentereftalat (PET). PHA framställas genom mikrobiologisk fermentering av organiskt material och innesluter sig i bakteriernas celler som sfäriska lagringsdepåer när bakterier matas med en kolkälla. PHAt kan sedan extraheras ut från bakterierna med hjälp av lösningsmedel, en metod som ger höga utvinningsnivåer men som kräver stora mängder lösningsmedel. Ska metoden vara hållbar och ha industriell relevans är det nödvändigt att lösningsmedelsåtervinning tillämpas. Industriell framställning av PHA sker idag med rena bakteriekulturer som matas med odlade sockerrika grödor. Detta leder till att konkurrens om markanvändning samt vatten- och energiresurser för främst livsmedelsproduktion uppstår. Samtidigt skapas restströmmar från industri och samhälle innehållande organiskt material och blandade bakteriekulturer vilka kan utnyttjas för att producera PHA. I detta arbete har PHA-processen modellerats i processimuleringsprogrammet CHEMCAD där data på restströmmar från skogsindustrin utnyttjas för PHA-produktion. I modellen har uppströmsprocesserna fermentering, anrikning, PHA-ackumulering och avvattning samt nedströmsprocesserna lösningsmedelsextraktion och separation inkluderats. Nedströmsprocesserna har modellerats för två fall. Ett fall där extraktion gjorts med 100 % torr biomassa (extraktionssystem 1) samt ett fall där extraktion gjorts med våt biomassa (extraktionssystem 2). Därtill implementerades intern värmeväxling vilket optimerades genom införandet av pinchanalys. Målet med projektet var att upprätta en energianalys av PHA processen, identifiera energibehovet för de enskilda PHA-processerna, analysera om lösningsmedelsextraktion görs mest energieffektivt med våt eller torr biomassa samt att utvärdera hur intern värmeväxling kan bidra till att energieffektivisera PHA-processen. Resultaten som erhölls visade att behovet av extern värme kunde minska från 49 till 13 MJ/ kg PHA och kylbehovet från 43 till 11 MJ/ kg PHA efter införandet av intern värmeväxling för extraktionssystem 1. När extraktion utfördes enligt extraktionssystem 2 minskade det externa kylbehovet från 98 till 48 MJ/kg PHA och det externa värmebehovet från 60,9 till 8,1 MJ/ kg PHA. I jämförelse med det totala specifika värme- och kylbehovet var det totala specifika elbehovet för PHA-processen lågt vilket kan ses som positivt då el är högvärdig och dyr energi. När extraktion utfördes enligt extraktionssystem 1 var det totala specifika elbehovet 3,55 MJ/ kg PHA och för extraktionssystem 2 var motsvarande siffra 4,1 MJ/ kg PHA. Störst elbehov uppstod i processen för luftning av PHA-ackumuleringstanken vilket krävde 2,8 MJ/kg PHA.Polyhydroxyalkanoates (PHAs) is a group of biobased and biodegradable polymers which can exhibit flexible physicochemical properties. Thus, PHA has the potential to replace conventional and fossil-based plastic such as polypropylene (PP) and polyethylene terephthalate (PET). PHA is produced through microbiological fermentation by organic matter and is stored in the cells of bacteria as spherical storage depots when the bacteria are feed by a carbon source. The PHA can then be extracted from the bacteria using solvent, a method resulting in high yields of PHA but on the other hand large quantities of solvent is required and if the method will be sustainable and have industrial relevance it is necessary to apply solvent recycling in the system. Today industrial production of PHA takes place using pure bacterial cultures and cultivated sugar-rich crops. This contributes to a competition of land use and water and energy resources, mainly for food production. At the same time, waste streams are generated from industry and society containing organic material and mixed bacterial cultures which can be used to produced PHA. In this work the process for PHA production has been modelled in the process simulation program CHEMCAD using data from waste streams produced from forest industry. In the model the following upstream processes has been included; acidogenic fermentation, enrichment, PHA-accumulation, dewatering and the downstream processes solvent extraction and separation. Moreover, the downstream processes have been modelled for two cases; one case where extraction takes place using 100 % dry biomass (extraction system 1) and one case where extraction takes place using wet biomass (extraction system 2). In addition, internal heat exchanging was implemented which was optimized through the introduction of pinch analysis. The aim of the project was to establish an energy analysis of the PHA process, identify the energy needs of the individual PHA processes, analyse whether solvent extraction is made most energy efficient using wet or dry biomass and to evaluate how internal heat exchanging can contribute to make to the PHA process more energy efficient. The results obtained showed that the need for external heating and cooling could decrease from 49 to 13 MJ/ kg PHA and 43 till 11 MJ/ kg PHA after the implementation of internal heat exchanging for extraction system 1. When extraction was performed according to extraction system 2 the external cooling demand was reduced from 98 to 48 MJ/kg PHA and the externa heating demand was reduced from 60,9 to 8,1 MJ/ kg PHA. In comparison with the total specific heating and cooling demand, the total specific electricity demand for the PHA process was low, which can be seen as positive as electricity is high-value and expensive energy. When extraction was performed according to extraction system 1, the total specific electricity requirement was 3,55 MJ/ kg PHA and for extraction system 2 the corresponding value was 4,1 MJ/ kg PHA. The greatest electricity demand arose in the process of aerating the PHA accumulation reactor with 2,8 MJ/kg PHA.
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Pedini, Boni Paolo. "Monitoraggio strutturale delle due torri di Bologna (Torre Asinelli e Torre Garisenda): prime elaborazioni delle risultanze sperimentali." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amslaurea.unibo.it/3285/.
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Pereda, Campos Marline Veronica Martin Francis. "Contribution à l'étude des transporteurs de phosphate de la famille PHT1 chez le Peuplier (Populus trichocarpa Torr. & Gray) et le champignon ectomycorhizien Laccaria bicolor (Maire) P. D. Orton." S. l. : Nancy 1, 2008. http://www.scd.uhp-nancy.fr/docnum/SCD_T_2008_0141_PEREDA-CAMPOS.pdf.
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Pereda, Campos Marline Veronica. "Contribution à l’étude des transporteurs de phosphate de la famille PHT1 chez le Peuplier (Populus trichocarpa Torr. & Gray) et le champignon ectomycorhizien Laccaria bicolor (Maire) P. D. Orton." Thesis, Nancy 1, 2008. http://www.theses.fr/2008NAN10141/document.
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La publication du premier séquençage d'un arbre - Le peuplier - et celle du champignon ectomycorhizien - Laccaria bicolor - a ouvert des nouvelles perspectives en biologie forestière. Les deux organismes constituent des modèles d'étude grâce à la connaissance de leur génome mais aussi de par leur importance économique, leur intérêt environnemental et leur capacité à s'associer de façon symbiotique. La symbiose mycorhizienne entre un champignon et une plante, améliore la nutrition minérale de la plante, et particulièrement sa nutrition phosphatée. La gestion de la forêt nécessite une meilleure compréhension des mécanismes qui servent à faire face à une faible fertilité en Pi dans le sol. Pour ce faire, nous avons réalisé la caractérisation des familles multigéniques des transporteurs de Pi de type PHT1 des deux organismes. Nous avons réussi à élucider les subtiles régulations de la famille de transporteurs de Pi entre ces deux partenaires, lors de différents états physiologiques de la plante et du champignon. Notre étude a mis en évidence l'effet positif observé sur la croissance des plantes lors de la mycorhization, celui-ci pouvant être étroitement lié à la régulation des certains transporteurs de Pi des deux partenaires (LbPht1;5 chez L.bicolor ; PtrPht1;9 et PtrPht1;12 chez le peuplier associé à L.bicolor et PtrPht1;10 associé à G.intraradices). D'autres transporteurs ont montré des réponses spécifiques à des stimuli comme la sénescence de feuilles (PtrPht1;1, PtrPht1;5, PtrPht1;6, PtrPht1;9 et PtrPht1;12), la carence en Pi (PtrPht1;9, PtrPht1;12 chez le peuplier, LbPht1;4 chez L. bicolor) et enfin nous avons pu observé les différents niveaux d'expression de chaque transporteur de Pi dans les différents compartiments tissulaires de chacun des partenaires. Cette mosaïque de réponses des membres de la famille PHT1 de ces deux organismes correspond à une première base de connaissances solide qui nous permettra de mieux comprendre les mécanismes du transport du Pi dans le sol des deux partenaires, par voie directe et symbiotiqueThe publication of the first genome sequence of a tree - the poplar - and of an ectomycorrhizal fungus - Laccaria bicolor – has opened new prospects in forestry. Because their genomes are now known, and these species are important both economically and ecologically,Poplar and L. bicolor comprise an important model of plant : fungal interactions,. The mycorrhizal symbiosis, occurring between a fungus and a plant, improves plant mineral nutrition, especially for phosphorus. Forest management requires a better understanding of the mechanisms utilized by plants growing in low phosphorus soils. To increase our understanding of these processes, we characterized the multigenic families of Pi transporters (PHT1 type) of both organisms. We elucidated the subtle regulation of these transporters, from both partners, in various physiological states. Plants grew faster when mycorrhizal and this effect might be explained by the regulation of certain of the Pi transporters : LbPht1;5 in L.bicolor; PtrPht1;9 and PtrPht1;12 in poplar associated with L.bicolor, and PtrPht1;10 associated with G.intraradices. Other Pi transporters responded specifically to stimuli such as leaf senescence (PtrPht1;1, PtrPht1;5, PtrPht1;6, PtrPht1;9 and PtrPht1;12) or Pi starvation (PtrPht1;9, PtrPht1;12 in poplar, LbPht1;4 in L. bicolor). In addition, we observed different levels of expression of each Pi transporter in different tissues of each partner. This mosaic of responses of PHT1 family members provides an initial understanding of how mycorrhization affects Pi uptake from the fungus and plant. From this solid base of knowledge, the mechanisms by which each partner takes up Pi, either directly from soil, or indirectly via their symbiont, can be further expored
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Doolen, Chad. "A habitat analysis of two geographically isolated populations of the federally threatened Mead's milkweed (Asclepias meadii Torr. ex A. Gray) in the St. Francois Mountains of the Missouri Ozarks." Thesis, Southeast Missouri State University, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10126095.
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Mead’s Milkweed (Asclepias meadii) is a federally threatened plant of tallgrass prairies in North America. Studies aimed at understanding the biology and ecology of this rare milkweed usually focus on healthy or restored populations in the tallgrass prairies of Kansas, Iowa, and Illinois. Thus, this study was designed to provide details about unique, understudied habitats surrounding isolated populations in the Missouri Ozarks.
The igneous glades of the St. Francois Mountains are small grasslands with shallow soils and harbor some of the healthiest populations of A. meadii. Three soil samples were collected at each site and used to describe the physical and chemical characteristics by pedon. Plant cover was sampled on multiple occasions throughout the growing season using thirty-five 1 m2 quadrats at both sites. Cover data was analyzed using Shannon’s Diversity and Evenness indices. The results of this study show that these communities are fairly diverse, grass-dominated areas on strongly acidic, nutrient poor soils. They also provide a dynamic, rather than static, view of the plant community. Diversity and evenness are consistent throughout the growing season, as is the cover of most dominant families and grass species. The cover from other species depended on the time of year. In general, overall diversity and evenness fluctuate little during the growing season.
Concerns for A. meadii are often centered on inbreeding and outbreeding depressions, therefore restoration efforts will depend heavily on the success of introduced individuals to augment genetically depauperate populations and reintroductions. Determining the basic characteristics of communities (plant composition plus soil parameters) associated with A. meadii, as was done here, can help guide restoration efforts by matching characteristics between source and target populations.
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Andersson, Martin. "Torkning integrerat med kraftvärmeverk : Påverkan av energibalanser i torksystem vid integrering till kraftvärmeverk." Thesis, Karlstads universitet, Institutionen för ingenjörs- och kemivetenskaper, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-46998.
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I Sveg finns ett pneumatiskt torksystem. Systemet har sedan 1989 torkat torv till briketter men har på senare tid torkat både trä och torv för produktion av bränsle i form av pellets och briketter. Idag består anläggningen av två symmetriska torklinjer. I torklinjerna används en värmepumpkrets för återvinning av råvaruånga. I värmepumpkretsen används en kompressor driven av inköpt elenergi. Planerna är att integrera en av linjernas nuvarande torkprocess till ett kraftvärmeverk genom installation av ångpanna med bränslet torv och således producera el istället för att köpa el. Integrationen till kraftvärmeverket ger torklinjens värmepumpkrets ett nytt utseende. Kompressorn tas bort i utvald torklinje och ersätts av två lågtrycksturbiner. Det nya utseendet av värmepumpkretsen kommer innebära ett samspel mellan torkning och kraftvärmeverk. I värmepumpkretsen används olika ångflöden beroende av vilket råvarumaterial som torkas. Därför beräknades och användes olika ångflöden beroende av olika fukthalter och inmatningar i torksystemet för att se hur el- och fjärrvärmeproduktionen i kraftvärmeverket påverkades. Samtidigt jämfördes nuvarande torksystem med torksystem integrerat med kraftvärmeverk ur ett energiperspektiv genom förändring av el, fjärrvärmeproduktion och biobränsle. Fjärrvärmeproduktionen i kraftvärmeverket ökade vid ångflödena 31,0 ton/h och 24,0 ton/h ”till kompressor” men på grund av större beräkningsosäkerhet bortsågs dessa. Detta gav en varierad sammanlagd fjärrvärmeproduktion av systemen mellan 23,0-23,8 MW respektive 22,0-22,5 MW vid torkning av torv respektive trä (bortseende av torvscenario 1 vid fukthalten 65 %). En fjärrvärmeproduktion i den storleken, jämfört med Svegs fjärrvärmebehov, kan sägas vara för stort. En stor problematik blir därför vad all spillvärme ska användas till, framförallt på sommaren. Vid integrering till kraftvärmeverk minskade ”bränsle” medan ”fjärrvärme” och ”el” ökade. Beroende av vilket råvarumaterial som torkades gav en integrering ett större resultat för ”el” men mindre ”fjärrvärme” och ”bränsle” vid torkning av trä. Därför rekommenderas torkning av trä eftersom större resultat av ”el” minskar inköpt elenergi samt mindre ”fjärrvärme” resulterar till mindre spillvärme. Vid beräkningarna användes Simulink, ett verktyg för grafisk lösning av differentialekvationer, som ingår i programvaran MATLAB från Mathworks. I Simulink formerades olika ekvationer i statiska beräkningsmodeller för beräkning av energibalanserna i nuvarande torksystem och torksystem integrerat med kraftvärmeverk. Energibalanserna i nuvarande torksystem undersökte svårplacerade effektförluster samt genom olika energibalanskontroller kontrollerade och bedömde trovärdigheten i beräkningsmodellen. Resultaten för energibalanskontrollerna kallades ”beräkningsosäkerhet” vilket var en av flera parametrar som framlade bevis för ett variabelberoende, känsligt, komplext och svårtydande torksystem där övriga effektförluster var svåra att placera. Ett mer korrekt resultat av nuvarande system kan därför möjligtvis uppnås vid användande av en dynamisk istället för statisk modell samt användande enbart av mätdata istället för dimensionerande värden och således göra effektförlusterna lättare att placera.
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Labbé, Jessy. "Contribution à l'étude de la structure et du polymorphisme du génome du basidiomycète ectomycorhizien "Laccaria bicolor" (Maire) Orton et identification de QTLs de mycorhization chez les peupliers, "Populus trichocarpa Torr. & A. Gray ex Hook. et "Populus deltoides (Bartr.) Marsh." Thesis, Nancy 1, 2009. http://www.theses.fr/2009NAN10079/document.
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Les symbioses mycorhiziennes, entre champignons et racines de plantes, concernent 95 % des espèces végétales. Les arbres sociaux des forêts boréales et tempérées forment avec les champignons un type particulier d’association : la symbiose ectomycorrhizienne. Les ectomycorrhizes jouent un rôle essentiel dans la nutrition hydrominérale des arbres, le cycle des éléments minéraux et la production primaire. Cependant, leur complexité n’a pas permis à ce jour de déchiffrer leurs rôles et leurs fonctions précises. La récente disponibilité du génome du champignon ectomycorhizien Laccaria bicolor et de celui de l'arbre hôte Populus trichocarpa fournit une occasion inégalée d’approfondir nos connaissances du développement et du fonctionnement de cette symbiose. Les objectifs de cette étude ont donc été de participer à la caractérisation et au décryptage du génome de L. bicolor puis à la recherche des gènes impliqués dans la formation des ectomycorhizes chez les deux partenaires. Dans un premier temps et afin d’aider à l’assemblage de la séquence génomique de L. bicolor, nous avons identifié les séquences répétées et construit une carte génétique. Sur les 60 Mb de ce génome, nous avons mis en évidence 8 % de séquences microsatellitaires et 24 % d’éléments transposables. Une carte génétique a été construite à partir de 111 monocaryons issus de L. bicolor S238N. Cette carte comprend 326 marqueurs (8 RAPD, 243 AFLP, 59 SSR et 14 SNP) répartis sur 10 groupes de liaison ancrés à la séquence génomique de L. bicolor. Dans un second temps, nous avons tenté d’identifier les gènes impliqués dans l’établissement des ectomycorhizes chez le peuplier en combinant une approche de détection par QTLs et par puces à ADN. Nous avons ciblé 81 gènes potentiellement impliqués dans l’établissement et/ou le fonctionnement de la symbioseThe mycorrhizal symbioses between fungi and roots concern 95 % of the plant species. Social trees of boreal and temperate forests form a particular type of root association with fungi: the ectomycorrhizal symbiosis. Ectomycorrhizas play a major role in tree hydromineral nutrition, nutrient cycles and primary production. However, their complexity have so far prevented from deciphering their precise function and role. The recent availability of the genome of the ectomycorrhizal fungus Laccaria bicolor and that of the host-tree Populus trichocarpa provides an unprecedented opportunity to decipher the key components of development and functioning of this symbiosis. The aims of this study were to participate to the characterization and deciphering of the genome of L. bicolor, and to determine the genes involved in the formation of ectomycorrhizas in both partners. Firstly, in order to facilitate the assembly of the genomic sequence of L. bicolor, we have identified the repeated sequences and generated a genetic map. On the 60 Mb of this genome, 8 % are microsatellite sequences and 24 % transposable elements. A genetic map was built from 111 monokaryons issued from L. bicolor S238N. This map includes 326 markers (8 RAPD, 243 AFLP, 59 SSR and 14 SNP) distributed on 10 linkage groups anchored onto the genomic sequence of L. bicolor. Secondly, we have identified the genes involved in the establishment of ectomycorrhizas in poplar by combining QTL detection and DNA microarrays. We targeted 81 genes which can be involved in the establishment and/or the functioning of the symbiosis
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Genest, Olivier. "Les chaperons dédiés à la biogénèse des molybdoenzymes : étude du couple chaperon TorD - molybdoenzyme TorA chez Escherichia coli." Aix-Marseille 2, 2008. http://theses.univ-amu.fr.lama.univ-amu.fr/2008AIX22087.pdf.
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Les molybdoenzymes sont des métalloprotéines dont le site actif est constitué d’un cofacteur à molybdène. Ces molybdoenzymes sont retrouvées chez tous les êtres vivants, des bactéries à l’homme. Leur biogenèse est un processus complexe qui nécessite la présence de protéines chaperons spécifiques. Au cours de ma thèse, j’ai étudié le rôle de la protéine chaperon TorD dans la biogenèse de la molybdoenzyme TorA chez Escherichia coli. TorA est l’enzyme terminale périplasmique de la chaîne respiratoire triméthylamine oxyde (TMAO) réductase. J’ai montré que le chaperon spécifique TorD, localisé dans le cytoplasme, est essentiel à la protection de la forme non mature de TorA (apoTorA) lors d’un stress thermique ou d’une carence en cofacteur à molybdène. En effet, l’absence de TorD dans ces conditions entraîne la dégradation complète de l’apoprotéine. J’ai également montré que la séquence signal Tat de TorA, qui permet l’export de la protéine vers le périplasme est hypersensible à la dégradation par les protéases. Cette séquence signal pourrait être une voie d’entrée pour les protéases qui ensuite dégraderaient l’ensemble de l’apoenzyme. TorD en interagissant avec la séquence signal de TorA empêche cette première dégradation et permet donc la protection de l’apoenzyme. TorD se lie également à la partie globulaire d’poTorA. Par cette interaction, TorD permet une maturation optimale de l’apoenzyme. Les acides aminés de TorD impliqués dans cette interaction ont été déterminés après mutagenèse aléatoire. Ils sont localisés dans la cinquième hélice de TorD. J’ai également montré que TorD présente un rôle de plate-forme sur laquelle se lie le précurseur du cofacteur à molybdène et l’enzyme MobA permettant la synthèse de la forme mature du cofacteur. Après catalyse, cette forme mature du cofacteur qui se lie à TorD peut être délivrée à l’apoenzyme TorA. Ainsi, TorD connecte tous les éléments nécessaires à la maturation de TorA : d’une part il interagit avec le cofacteur à molybdène et d’autre part avec l’apoenzyme. Nous proposons donc que TorD interagisse à proximité du site actif de TorA pour y délivrer directement le cofacteur à molybdèneT-ALL is a lymphoid neoplasia that accounts for 10-15% of pediatric ALL and 25% of adult ALL. Alarmingly, and despite indisputable success achieved in treatments its incidence is increasing and its prognostic remains pejorative. Survival rate outcome depend notably on a better understanding in pathogenic mechanisms. In this context, the thesis work has been the following: 1) Based on the observation that rare chromosomal SJ keep on recombining in cis using V(D)J recombination, we hypothesized that episomal SJ (ESJ) still remain reactives and can undergo genomic reintegration. We show that mechanistically, ESJ efficiently rearrange in trans and that the cRSS, the sequences targeted in oncogenic chromosomal translocations, are good ESJ integration sites. Moreover, we demonstrate the presence of ESJ reintegration events in vivo and estimate their frequency to ~1/104-6. In conclusion, ESJ reintegration is a potential mechanism of oncogenic deregulation. 2) Conventional and illegitimate V(D)J recombination events (e. G. Translocations) are ordered during lymphocyte development. Based on our knowledge on chromosomal translocation mechanisms, we determine the kinetics of a subset of oncogenic activations acquired during the transformation process in a T-ALL patient’s leukemic cells. Moreover, we identified up to 10 independent oncogenic events in this patient, illustrating the multi-hit characteristic of T-ALL. Finally, the oncogenic event’s functional impact suggests that cMyc play an important role in the particularly aggressive features of the T-ALL developed by this patient
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Varol, Oğuz. "Kriterien für Tor1[alpha] (E, F)=0 [Tor 1 alpha (E, F)=0] für (DF)- und Frécheträume." [S.l. : s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=969223277.
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Srour, Ola. "Caractérisation de protéines interagissant avec eIF4E, phosphorylées par TOR et modulant l’initiation de la traduction coiffe-dépendante chez Arabidopsis." Thesis, Strasbourg, 2016. http://www.theses.fr/2016STRAJ091.
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Chez les mammifères l’initiation de la traduction et, plus particulièrement, la formation du complexe eIF4F, est principalement régulée par la protéine kinase TOR (Target of rapamycin). Cette voie de régulation fait intervenir les protéines 4E-BP (eIF4E-binding proteins) dont l’activité est modulée par la phosphorylation par TOR. Sous leur forme non-phosphorylée, les 4E-BP se lient au facteur d’initiation eIF4E, empêchent son recrutement dans le complexe eIF4F et inhibent ainsi l’initiation de la traduction. Phosphorylées par TOR, les 4E-BP perdent leur affinité pour eIF4E et sont remplacées par eIF4G ce qui active la traduction. La régulation de l’initiation de la traduction par TOR via 4E-BP a été bien décrite dans plusieurs modèles eucaryotes, tels que la levure, les insectes et les mammifères, mais reste encore obscure chez les plantes. Les recherches réalisées au cours de ma thèse ont permis l’identification de deux protéines homologues de 4E-BP chez Arabidopsis. Ces protéines, que nous avons appelées ToRP1 et ToRP2 (TOR Regulatory Proteins), sont caractérisées par la présence d’un motif consensus indispensable pour la liaison à eIF4E, et qui existe chez les protéines 4E-BP des mammifères ainsi que chez eIF4G et eIFiso4G d’Arabidopsis. La protéine ToRP1 est capable d’interagir spécifiquement avec eIF4E, mais aussi avec TOR via son extrémité N-terminale en système double-hybride de levure. ToRP1 et ToRP2 ont également été caractérisées comme étant des cibles directement phosphorylées par TOR chez Arabidopsis. Deux sérines, en position 49 et 89 dans la protéine ToRP1, ont été identifiées comme des sites potentiels de cette phosphorylation. De plus, l’état de phosphorylation de ces sites affecte l’interaction avec eIF4E en système double-hybride de levure. Par ailleurs, des plants d’Arabidopsis déficients en ToRP1 et ToRP2 renforcent la traduction strictement coiffe-dépendante de l’ARNm CYCB1;1, alors que la surexpression de ToRP1 ou de ToRP2 réprime sa traduction. Ces résultats suggèrent donc que les protéines ToRP, identifiées chez Arabidopsis, sont de nouvelles cibles directes de TOR, qui, par leur phosphorylation, régule l’initiation de la traduction coiffe-dépendanteThe target of rapamycin (TOR) is an evolutionarily conserved kinase that is a critical sensor of nutritional and cellular energy and a major regulator of cell growth. TOR controls cap-dependent translation initiation, in particular the assembly of the eIF4F complex, by modulating the activity of eIF4E-binding proteins (4E-BPs). In their unphosphorylated state 4E-BP proteins sequester eIF4E and repress translation. Upon phosphorylation by TOR, 4E-BPs have a low affinity binding to eIF4E and are replaced by eIF4G thus activating translation initiation. 4E-BPs have been discovered in yeast and mammals but remain to be obscure in plants. Here, we identified and characterized two Arabidopsis proteins termed TOR Regulatory Proteins (ToRPs 1 and 2) that display some characteristics of mammalian 4E-BPs. ToRP1 and ToRP2 contain a canonical eIF4E-binding motif (4E-BM) found in mammalian 4E-BPs and Arabidopsis eIF4G and eIFiso4G. ToRP1 interacts with eIF4E, and, surprisingly, the N-terminal HEAT domain of TOR in the yeast two-hybrid system. ToRP1 and ToRP2 are highly phosphorylated at several phosphorylation sites in TOR-dependent manner in planta. Two of these phosphorylation sites have been identified as—S49 and S89—their phosphorylation status modulates ToRP1 binding to eIF4E in the yeast two-hybrid system. In plant protoplasts, ToRP2 can function as translation repressor of mRNAs that are strictly cap-dependent. Our results suggest that ToRPs can specifically bind the Arabidopsis cap-binding proteins (eIF4E/eIFiso4E) and regulate translation initiation under the control of TOR
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Moenikes, Ansgar. "Tora ohne Mose : zur Vorgeschichte der Mose-Tora /." Berlin : Philo, 2004. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=013004084&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
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Schnapp, Jonathan. "Torn away /." Online version of thesis, 2008. http://hdl.handle.net/1850/6248.
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Silveira, Elton José da. "Walking tour." Florianópolis, SC, 2003. http://repositorio.ufsc.br/xmlui/handle/123456789/85475.
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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia de Produção.Made available in DSpace on 2012-10-20T19:08:56Z (GMT). No. of bitstreams: 1 264058.pdf: 13841373 bytes, checksum: 49c7beba17f89b3d5db8df7b077ebb67 (MD5)
Apresenta um olhar propondo o uso do Walking Tour (WT) como forma de preservação da história e do patrimônio de uma cidade, inserindo-o como uma ferramenta de motivação, consciência e conhecimento, em escolas, associações e grupos organizados, podendo dessa maneira estimular a identidade entre cidadão e cidade. O uso do WT como instrumento pedagógico aparece no trabalho como um eficaz recurso educacional do professor para despertar no aluno a curiosidade necessária acerca de sua cultura e sua cidade. O trabalho propõe ao mesmo tempo a utilização do WT no turismo cultural como argumento ao guia de turismo e como forma de gerar trabalho, divisas e melhorias para a economia local.
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Buhl, Nils E. "Tora! Tora! Tora!: The attack on Pearl Harbor from a prospect theoretic, culture-centric perspective." Connect to online resource, 2007. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1446084.
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Jarlegård, Hanna, and Bastien Lacombe. "Trygga torg : En studie av torg ur ett trygghetsperspektiv." Thesis, KTH, Urbana och regionala studier, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-252783.
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Trygghetsarbete ärnågot som både statliga myndigheter och kommuner intresserar sig för. Kommunernämner gärna i sina översiktsplaner att trygghetsfrämjande åtgärder ska vidtasoch att områden ska utvecklas med hänsyn till tryggheten. Hur dettatrygghetsarbete tar sig form i den fysiska miljön är mindre tydligt och syftetmed denna studie har således varit att ta fram aspekter som går att arbeta medför att främja trygghet. Dessa aspekter har sedan använts för att analyseratorg i Stockholm stad, Nacka kommun och Vaxholm stad för att se hur väl torgensvarar mot dessa aspekter. Aspekterna som tagits fram med hjälp av enlitteraturstudie och den fallstudie som har utförts har sedan legat till grundför att ta fram tips för hur trygga torg kan utformas.Litteraturstudien ledde till att fem aspekter av stor betydelse för trygghetentogs fram: närhet till andra människor, synlighet och överblickbarhet,belysning, grönska och skötsel av allmän plats. Inget av de torg som omfattadesav fallstudien uppnådde samtliga trygghetsaspekter, men vissa uppfyllde fler änandra. Utöver de slutsatser som har dragits kring vilka aspekter som är trygghetsfrämjandeså ledde studien till slutsatser kring vilka torg som uppfyller vilka aspekter.Slutligen ledde studien fram till konkreta förbättringsförslag för trygghetenpå de torg som fallstudien omfattade och handfasta tips för hur torg kanutformas med hänsyn till trygghetWorking with perceived safety is something that both government agencies and municipalities are interested in. Municipalities gladly mention in their general plans that perceived safety actions is something that should be prioritised and that new areas should be developed with regard to the perceived safety. Exactly how these perceived safety actions takes shape in the physical environment is less clear and the purpose has thus been to identify aspects that are possible to work with and that promotes the perceived safety. The identified aspects have then been used to analyse squares in Stockholm stad, Nacka kommun and Vaxholm stad to see how well these places correspond to the these aspects. Tips on how squares that are perceived as safe was then formulated based on the case study and the aspects that was identified in the literature study.The literature study led to the identification of five aspects with great significance to the perceived safety: closeness to other people, visibility and overview, lightning, greenery and maintenance of public space. None of the observed squares fulfill all the aspects, but some fulfill more than others. Other than the conclusions that were drawn concerning which aspects that are promoting for the perceived safety, the study also led to conclusions regarding which squares that fulfill which aspects. Finally the study led to improvement-proposals for perceived safety on the squares of the case study and concrete tips on how squares can be designed with regard to perceived safety.
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Pettersson, Ina. "Sergels torg och Medborgarplatsen - En jämförande studie av torg." Thesis, Blekinge Tekniska Högskola, Institutionen för fysisk planering, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-16560.
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Kandidatarbetet undersöker torg och orsakerna till dess olika användningar ur ett socio-rumsligt tillvägagångssätt, det vill säga förhållandet mellan människan och den fysiska miljön. I detta arbete kommer de två valda torgen, Medborgarplatsen och Sergels torg undersökas och analyseras för att finna komponenter som kan vara en del av förklaringen till dess olika användning. Genom arbetet kommer det tas fram olika begrepp och delar som anses vara viktiga för hur ett torg fungerar och påverkar de som väljer att besöka platsen. I slutsatsen har det samanställts viktiga komponenter. Komponenter som tas upp är bland annat utformingen, platsens tillgänglighet, om torget bjuder in till aktivitetet eller hindrar andra aktiviteter och hur torget uppfattas av dess användare. Dessa utgör tillsammans en betydande roll för hur platserna kommer användas av dess besökare. Vidare diskteras effekterna av torgens komponenter och dess potentiella effekter på de människor som väljer att besöka platserna.
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Freedman, Margot. "Paternalistic tort law." Diss., Online access via UMI:, 2005. http://wwwlib.umi.com/dissertations/fullcit/1425588.
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Goudkamp, James. "Tort law defences." Thesis, University of Oxford, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.539957.
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Albertini, Fabienne. "Toro en Provence." Lille 3 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37594444r.
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Albertini, Fabienne. "Toro en Provence." Aix-Marseille 1, 1985. http://www.theses.fr/1985AIX1A005.
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Bouffard-Gagné, Julie. "Le Grand Tour." Master's thesis, Université Laval, 2020. http://hdl.handle.net/20.500.11794/67930.
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Autrefois, faire Le Grand Tour signifiait de s'embarquer dans un long pèlerinage culturel à travers le continent européen. Ce voyage constituait un rite de passage pour tout jeunes bourgeois voulant élever ses centres d'intérêt et s'imprégner des bases de la société occidentale. Ironiquement, c'est aussi le nom donné à ce texte et à l'exposition qu'il l'accompagne puisqu'il a - comme Le Grand Tour - l'ambition de faire du voyage un prétexte à l'éducation. L'objectif n'est pas de faire du Grand Tour une thématique, mais d'y voir une amorce à la réflexion. Le voyage prend donc dans ce mémoire une vocation allégorique qui se décline à travers différents temps, différents lieux et différentes matérialités de l'image. Si l'exposition constitue la manifestation physique d'un parcours fictif, ce texte ci-présent cherche plutôt à en retracer l'itinéraire. Il s'attarde d'abord au caractère a-hiérarchique de la photographie, à la décomposition de l'image vidéographique et à l'appropriation des images que l'on retrouve sur le web. Il tisse ensuite des liens entre le regard, le récit, la narration et le déplacement. Finalement, il s'intéresse aux modes d'organisation par lesquels se regroupent les images dans ma pratique, c'est-à-dire, par la mise en espace et par le livre.
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Sheikomar, Diwan, Rebecca Lilja, and Mahdieh Yousefzahi. "Att väcka liv i ett torg : Omgestaltning av Härnösands Stora Torg." Thesis, Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-55730.
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Purpose: The purpose of this degree project was to redesign Härnösand's square called Stora Torget. Method: To complete this degree project, a literature study, case study, and analysis of various documents were performed. A site visit was accomplished and four different interviews with experts, and a survey for Härnösand residents was also done. Results: The results showed that a redesign of a square means a change. This change can be an upgrade of the square both visually and functionally. Physical elements such as seating and greenery affect the experience when visiting a square. There were some differences between the residents and experts in several opinions about how a square is designed best. The design proposal was developed with the help of Autodesk Revit, and the proposal has taken into account the opinions of both the experts and the residents of Härnösand. The proposal creates opportunities for a stronger meeting place but also a more well-utilized square for both residents and visitors, by implementing physical elements such as several seats where people can meet and socialize. Conclusions: The work concludes that physical elements affect the design of the square and that the design proposal can be a basis for future changes to the square.
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Stugholm, Kristina. "Torö Stenstrand : Ett paradis för vågsurfare?" Thesis, Södertörn University College, School of Communication, Technology and Design, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-1801.
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Bakgrund: Torö Stenstrand tillhör naturreservatet Ören som är beläget på en udde på ön Torö i den sydligaste delen av Stockholms län. I slutet av 1970-talet kom vågsurfingsporten till Sverige och Torö Stenstrand. Det var några lokala entusiaster som upptäckte platsen och såg att vågorna lämpade sig för surfing. Sedan dess har officiella surf-SM genomförts av Swedish Surfing Association i stort sett varje höst sedan början av 90-talet. Det finns dock en konflikt kring frågan om stranden bör vara helt tillgänglig för allmänheten eller om de privata tomterna, som finns längsmed vissa delar av Stenstranden, ska ha äganderätt av marken ner till vattnet. Det är därför intressant att undersöka hur vågsurfingturismen kan utvecklas i ett hållbart perspektiv.
Syfte: Syftet med denna uppsats är att undersöka vad som kan göras för att utveckla vågsurfingturismen på Torö Stenstrand.
- Att beskriva och förklara förutsättningarna för vågsurfingturism vid Torö Stenstrand
- Att göra en undersökning om hur Torö Stenstrand kan utveckla potentialen som Sveriges bästa året-runt tillgängliga vågsurfingplats
Metod: Denna uppsats har skrivits utifrån en hermeneutisk vetenskapssyn och en kvalitativ ansats. Data har insamlats genom fyra semi-strukturerade intervjuer samt ett nyhetsprogram.
Slutsats: Slutsatsen av studien är att det finns många möjligheter att utveckla vågsurfingturismen på Torö Stenstrand och att konflikterna mellan de boende och vågsurfarna kanske skulle gå att lösa, om än inte helt så i alla fall delvis. Då Torö Stenstrand består av orörd natur samt är ett naturreservat finns det visserligen begränsningar för vad man kan göra men detta är också en styrka eftersom det gör att planeringen måste vara noggrann. Teorin om en destinations multidimensionella styrka visar att samtliga konkurrenskrafter är viktiga men med betoning på teknologisk, politisk, miljömässig och sociokulturell konkurrenskraft. Teorin om de sex A:na visar att attraktioner, aktiviteter och tillgänglighet är de som för närvarande går att applicera på Torö Stenstrand.
Background: Torö Stenstrand belongs to the nature reserve Ören which is located at a headland on the island of Torö in the southernmost part of Stockholm County. Wave surfing came to Sweden and Torö Stenstrand in the end of the 1970s. There were some local enthusiasts that discovered the place and saw that the waves would suit for surfing. Ever since, the official Swedish surfing championship has been carried out almost every autumn since the early 1990s. There is, however, a conflict about whether the beach should be available to the public or if the private properties, that are situated along some parts of the beach, should be allowed to have ownership down to the water. It is therefore interesting to investigate how wave surf tourism could be developed in a sustainable perspective.
Purpose: The purpose of this study is to describe and analyze how wave surfing tourism can be developed at Torö Stenstrand.
- To describe and explain the conditions for wave surfing at Torö Stenstrand.
- To make a study on how Torö Stenstrand can develop it´s potential of being Sweden´s best all-year-round available wave surfing spot.
Methodology: This study has been executed from a hermeneutic point of view and a qualitative approach. The collection of data has been carried out through four semi-structured interviews and television news.
Conclusions: The conclusion of the study is that there are many possibilities for developing wave surfing tourism at Torö Stenstrand and that the conflicts between inhabitants and wave surfers might be solved, if not totally than at least partially. Since Torö Stenstrand consists of unspoiled countryside and is a nature reserve, there are limits for what you can do, but that can also be a strength seeing that the planning needs to be done very thorough. The theory about a destinations multidimensional strength shows that all dimensions are important but that technological, political, environmental, social and cultural dimensions are most important. The theory about the 6A framework for the analysis of tourism destinations shows that attractions, activities and accessibility are the factors that can be applied on Torö Stenstrand.
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Masaki, Keisuke. "Development of provincial Toryism in the British urban context, c.1815-1832." Thesis, University of Edinburgh, 2016. http://hdl.handle.net/1842/21698.
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This thesis analyses the development of provincial Toryism during the period from the end of the Napoleonic wars in 1815 to the passage of the Reform Acts in 1832, examining the beliefs, organisations, and actions of local Tories particularly in some large British towns. In the early nineteenth century, the existence of two parties, Tory and Whig, became a major feature of parliamentary politics, and local political associations supporting each of them were gradually organised and became powerful and influential in urban centres. Local Tories expressed their opinions and acted together in order to support the Tory party in Parliament. They found support in different regions, and developed a recognisable network and identity in various British towns. Like parliamentary Tories, however, they were not completely coherent in their ideology nor entirely agreed in what policies to pursue. They were ‘issue-oriented’ associations, which were loosely connected with each other. They sometimes acted independently and flexibly, lacked complete unity, and were not controlled by the national party at Westminster. Taking these circumstances into consideration, this thesis attempts to reveal how national and local politics were connected, and some of the most important aspects of local Tory politics particularly in terms of identity and organisation Chapter One examines the political ideology of local Tories, by looking at the provincial Tory press published in Bristol, Colchester, and Edinburgh in particular. Chapter Two investigates Tory clubs and societies, such as the Pitt Clubs, the True Blue Clubs, the King and Constitution Clubs, the Brunswick Clubs, and the Orange Lodges, which were widely and deeply entrenched in British urban communities. Chapter Three examines Tory electoral politics in three large, open, freeman boroughs: Liverpool, Bristol, and Colchester. It analyses the political opinions and actions of the electors and non-electors and investigates the extent and the ways in which national issues impacted on these urban constituencies. Chapter Four also examines the impact of national issues on local Tory politics, but does so by presenting a case study of the involvement of local Liverpool Tories in such significant provincial political arenas as Corporation politics, mayoral elections, and public meetings. The Conclusion stresses the importance of the diverse and flexible reactions of provincial Tories to various political events occurring in the localities as well as at Westminster.
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Alexander, Nicholas Charles. "Algebraic Tori in Cryptography." Thesis, University of Waterloo, 2005. http://hdl.handle.net/10012/1154.
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Communicating bits over a network is expensive. Therefore, cryptosystems that transmit as little data as possible are valuable. This thesis studies several cryptosystems that require significantly less bandwidth than conventional analogues. The systems we study, called torus-based cryptosystems, were analyzed by Karl Rubin and Alice Silverberg in 2003 [RS03]. They interpreted the XTR [LV00] and LUC [SL93] cryptosystems in terms of quotients of algebraic tori and birational parameterizations, and they also presented CEILIDH, a new torus-based cryptosystem. This thesis introduces the geometry of algebraic tori, uses it to explain the XTR, LUC, and CEILIDH cryptosystems, and presents torus-based extensions of van Dijk, Woodruff, et al. [vDW04, vDGP+05] that require even less bandwidth. In addition, a new algorithm of Granger and Vercauteren [GV05] that attacks the security of torus-based cryptosystems is presented. Finally, we list some open research problems.
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Hötte, Heike. "Eine Verallgemeinerung komplexer Tori." [S.l. : s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=972090606.
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Lundqvist, Erik. "Hotell Vått & Torrt." Thesis, KTH, Arkitektur, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-168498.
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Sumering av projekt Det är något speciellt med ett hotell. Livet ur ett privat och offentligt perspektiv kokas ihop på en liten yta. I staden fungerar hotellet som mötesplats mellan det lokala och världen utanför. På vår tomt i Mariefred handlar det om krocken mellan den närliggande stadskärnan, Gripsholms slott och de med bil, ångbåt eller tåg anländande besökarna. Platsen har dock ett problem. Med en marknivå som knappt ligger över Mälarens vattenyta är tomten extremt känslig för översvämning och mättas ofta vid kraftiga regn. Ur denna förutsättning reser sig hotellet Vått & Torrt, en byggnad som vänt problemet till möjlighet och utnyttjat vattnets förmåga att stimulera våra mänskliga sinnen såväl som att skapa en ekologiskt hållbar plats. Hotellets rum formas runt en sänkning i tomten, som hamnar under grundvattennivån, och kan på så sätt få vatten att stå likt i en våtmark. En stilla morgon sitter gästerna och äter frukostbuffé på bryggan akompanjerat av en galande anka och vassen sus. På kvällen speglar sig festvåningens galej i vattnet och skapar ett ljusspel som får de sent anländande tågresenärerna att börja packa upp i jakt efter systemkameran redan på perrongen. Det sista den gamle tanten som hyrt rum nr 4 på plan 1 med balkongläge mot söder hör innan hon somnar i den gedigna hotellsängen är en kväkande skogsgroda. Exemplen ovan beskriver en ny typ av mötesplats där hotellets sociala rum gifter sig med naturresursen vatten. Min övertygelse är att alltid hitta platsens inneboende krafter i ett tidigt skede och skapa projektet utifrån dessa. På så sätt blir överaskningarna efter bygget övervägande positiva! För vem vill inte möta en gås på fönsterbläcket?Summary of project There is something perticular about a hotel. Life from a private/public perspective are mould together on a small area. In the city the hotel functions as a meating point between the local and world around. On our site in Mariefred, the interesting is the clash between the small but dense city core and the parks that surrounds the castle of Gripsholm where there´s a big flow of visitiors arriving by car, steamboat or locomotive. The site has a problem. The groundlevel is just above lake Mälarens sealevel and thereby it´s very sensitive to flooding during heavy rain and snow melting. Out of these conditions the hotel "Vått & Torrt" are rising. A building that has turned the problem into a posibilty and uses the water to create a more sustainable place that also gives something nice to our human senses. The hotel are shaped around a lower on the plot, which has it´s ground level below the sea in order to make the water sustain on the site.
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Stenkvist, Viktor, and Peter Larsson. "Bränslecellskonvertering av linfärjan Tora." Thesis, Linnéuniversitetet, Sjöfartshögskolan (SJÖ), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-34491.
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Denna rapport består av information och data som har samlats in i syfte att kunna presentera en genomförbar konvertering av linfärjan Toras framdrivningssystem, som idag utgörs av dieselelektrisk drift, till bränslecellsdrift. Den bränslecell som behandlas i rapporten är PEMFC och är en bränslecellstyp som drivs av ren vätgas. Resultaten tjänar som en informationskälla för en potentiell konvertering och presenteras för Trafikverket, som ett alternativ i linje med Sveriges regerings mål att reducera mängden CO2 utsläpp på en nationell nivå. Informationen i rapporten har insamlats via mail- och telefonkontakt samt ett besök på Tora på plats i Stockholm. Ett genomförande av konverteringen är fullt möjligt men mer kostsamt än dieseldrift i dagsläget med avseende på höga bränsle- och inköpskostnader utav bränsleceller. Med framtidens hårdare utsläppskrav och eventuella förbud av fossila bränslen, så kanske vätgasen kan bli aktuell som bränsle, trots de höga kostnader som finns.This report consists of the information and data collected in the purpose of presenting a viable option for a conversion from diesel-electric energy supply, to fuel cell energy supply for the propulsion of the cable ferry Tora. The fuel cell mentioned in this report is a PEMFC, which is powered by pure hydrogen. The result serves as a platform of information for a potential conversion and is presented to Trafikverket as an option that corresponds with the Swedish government’s goal of CO2 reduction on a national level. The information in this report was collected via email and telephone contact, and a visit to Tora in Stockholm. An implementation of the conversion is entirely possible but comes with a greater cost then diesel operation at the present time with regards to high fuel and purchase costs of fuel cells. With tomorrow's tougher emission requirements and possible ban on fossil fuels, then maybe hydrogen gas can be viable as fuel, despite the high cost.
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Encarnação, Marcelo Augusto Flores Reis da. "A Batalha de Toro." Tese, Porto : [Edição do Autor], 2011. http://aleph.letras.up.pt/F?func=find-b&find_code=SYS&request=000214154.
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Esta dissertação pretende estudar a entrada do exército de Afonso V em Castela em 1475, observando dois pontos de vista - um politico e outro militar, utilizando uma metodologia comparada entre fontes portuguesas, castelhanas e aragonesas. Procurou-se analisar a complexidade dos diferentes interesses e das distintas visões da realidade, em particular a partir das fontes cronísticas. Assim, à morte de Enrique IV, em 12 de Dezembro de 1474, Afonso V, crendo ser o legitimo rei de Castela, por responder ao ultimo desejo do rei defunto e por desposar a sobrinha Juana, reuniu apoios em Portugal, assegurou forças em Castela e pensou que com elas seria aceite como rei de Castela. A campanha, que inicialmente conheceu algum sucesso com o cerco falhado que Fernando I de Castela lançou ao Africano, em Toro, com as conquistas de Toro e Zamora e com a batalha de Baltamis, foi pendendo para o lado dos Reis Católicos a partir do momento em que conseguem assegurar mais apoios e, especialmente, a partir do ponto de não retorno- a batalha de Toro, a 1 de Março de 1476. Ao longo destes quatro anos de guerra não houve somente uma contenda politica entre dois reinos. Travou-se um jogo de forças entre a nobreza e a monarquia castelhanas, comum a outras monarquias tardo-medievais. A falta de apoios internacionais e a transição da opinião do príncipe D. João no sentido de procurar o entendimento contribuíram para a procura da paz, alcançada em 1479.
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Hilding, Malin. "Torn : Look-out Tower." Thesis, Umeå universitet, Arkitekthögskolan vid Umeå universitet, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-172235.
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Önerud, Anette. "Att väcka ett torg." Thesis, KTH, Arkitektur, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-281404.
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Mitt projekt bemöter ett småstadstorg där flera av förutsättningarna byggts bort eller med tiden inte underhållits, och där platsen och de gamla butikerna samtidigt har svårt att hitta en ny roll i ett allt mer urbaniserat land. Torgets kvaliteter finns i olika skalor och dimensioner, därför har jag valt att hantera projektet på tre nivåer: stad, torg och byggnad. Platsen är det sk. Skvallertorget i Kisa, Östergötland, med omgivande befintliga hus och butiker från tiden 1890-1910, varav många idag är delvis stängda eller med eftersatt underhåll. Utgångspunkten är att återuppväcka den gamla torg-platsen och byggnaderna som ramar in det. Projektet handlar om att genom hänsynsfulla förändringar och tillägg kunna väcka de kvaliteter som glömts bort, och skapa nya i samma spår genom restaurering och referenser i den egna staden. Jag vill också med detta projekt väcka frågor kring omsorg, kvalitet och identitet och hur detta finns med i vår hantering av befintliga och nya byggnader.My project deals with a small town square where many of the qualities and requirements have been deconstructed or not maintained over time, and where the square and the old stores have trouble finding its place in an increasingly urbanized country. The qualities of a town square are found in different scales and dimensions, and I have therefore decided to approach the project on three levels: town, square and building. The site is the so called Skvallertorget in Kisa, Östergötland, with its surrounding existing houses and stores from the time 1890-1910, out of which many are now partly closed and neglected. To revitalize the old town square and the buildings surrounding it was my starting point, and the project is about awakening the forgotten qualities with careful alterations and additions, and to create new in the same style through restoration and references in the town. With this project I also want to ask questions about care, quality and identity and how this is part of our way of dealing with existing and new environments and buildings.
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Fish, Jesse O. "Robotic Tour Guide Platform." Case Western Reserve University School of Graduate Studies / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=case1342039873.
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