Dissertationen zum Thema „Macropods“
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Zenger, Kyall Richard. „Genetic linkage maps and population genetics of macropods“. Phd thesis, Australia : Macquarie University, 2002. http://hdl.handle.net/1959.14/47604.
Der volle Inhalt der QuelleThesis (PhD)--Macquarie University, Division of Environmental and Life Sciences, Department of Biological Sciences, 2002.
Bibliography: leaves 136-157.
General introduction -- Molecular markers for comparative and quantitative studies in macropods -- Genetic linkage map construction in the tammar wallaby (M. eugenii) -- Intraspecific variation, sex-biased dispersal and phylogeography of the eastern grey kangaroo (M. giganteus) -- General discussion.
The analysis of DNA using molecular techniques is an important tool for studies of evolutionary relationships, population genetics and genome organisation. The use of molecular markers within marsupials is primarily limited by their availability and success of amplification. Within this study, 77 macropodid type II microsatellite loci and two type I genetic markers were characterised within M. eugenii to evaluate polymorphic levels and cross-species amplification artifacts. Results indicated that 65 microsatellite loci amplified a single locus in M. eugenii with 44 exhibiting high levels of variability. The success of crossspecies amplification of microsatellite loci was inversely proportional to the evolutionary distance between the macropod species. It is revealed that the majority of species within the Macropodidae are capable of using many of the available heterologous microsatellites. When comparing the degree of variability between source-species and M. eugenii, most were significantly higher within source species (P < 0.05). These differences were most likely caused by ascertainment bias in microsatellite selection for both length and purity. -- The production of a marsupial genetic linkage map is perhaps one of the most important objectives in marsupial research. This study used a total of 353 informative meioses and 64 genetic markers to construct a framework genetic linkage map for M. eugenii. Nearly all markers (93.7%) formed a significant linkage (LOD > 3.0) with at least one other marker. More than 70% (828 cM) of the genome had been mapped when compared with chiasmata data. Nine linkage groups were identified, with all but one (LG7; X-linked) allocated to the autosomes. Theses groups ranged in size from 15.7 cM to 176.5 cM, and have an average distance of 16.2 cM between adjacent markers. Of the autosomal linkage groups, LG2 and LG3 were assigned to chromosome 1 and LG4 localised to chromosome 3 based on physical localisation of genes. Significant sex-specific distortions towards reduced female recombination rates were revealed in 22% of comparisons. Positive interference was observed within all the linkage groups analysed. When comparing the X-chromosome data to closely related species it is apparent that it is conserved both in synteny and gene order. -- The investigation of population dynamics of eastern grey kangaroos has been limited to a few ecological studies. The present investigation provides analysis of mtDNA and microsatellite data to infer both historical and contemporary patterns of population structuring and dispersal. The average level of genetic variation across sample locations was exceedingly high (h = 0.95, HE = 0.82), and is one of the highest observed for marsupials. Contrary to ecological studies, both genic and genotypic analyses reveal weak genetic structure of populations where high levels of dispersal may be inferred up to 230 km. The movement of individuals was predominantly male-biased (average N,m = 22.61, average N p = 2.73). However, neither sex showed significant isolation by distance. On a continental scale, there was strong genetic differentiation and phylogeographic distinction between southern (TAS, VIC and NSW) and northern (QLD) Australian populations, indicating a current and / or historical restriction of geneflow. In addition, it is evident that northern populations are historically more recent, and were derived from a small number of southern eastern grey kangaroo founders. Phylogenetic comparisons between M. g. giganteus and M. g. tasmaniensis, indicated that the current taxonomic status of these subspecies should be revised as there was a lack of genetic differentiation between the populations sampled.
Mode of access: World Wide Web.
xv, 182 leaves ill
Haouchar, Dalal. „Using ancient DNA to investigate extinction, extirpation and past biodiversity of Australian macropods“. Thesis, Haouchar, Dalal (2016) Using ancient DNA to investigate extinction, extirpation and past biodiversity of Australian macropods. PhD thesis, Murdoch University, 2016. https://researchrepository.murdoch.edu.au/id/eprint/32550/.
Der volle Inhalt der QuelleFukuda, Yuki. „The effects of closing watering points on populations of large macropods and landscape rehabilitation in a semi-arid national park /“. [St. Lucia, Qld.], 2006. http://adt.library.uq.edu.au/public/adt-QU20060511.125915/index.html.
Der volle Inhalt der QuelleRendle, Jessica Amy Jane. „Epidemiology of lumpy jaw in captive macropods across Australia and Europe: An investigation of disease risk and treatment approaches“. Thesis, Rendle, Jessica Amy Jane (2019) Epidemiology of lumpy jaw in captive macropods across Australia and Europe: An investigation of disease risk and treatment approaches. PhD thesis, Murdoch University, 2019. https://researchrepository.murdoch.edu.au/id/eprint/49721/.
Der volle Inhalt der QuelleRombang, Johan Alexander. „An investigation into subsurface macropore flow using an artificial macropose system“. Thesis, University of Reading, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336690.
Der volle Inhalt der QuelleBlacker, Amy Rachael. „Wallabies and Roads: Interactions and Management in an Urbanising Landscape“. Thesis, Griffith University, 2014. http://hdl.handle.net/10072/367128.
Der volle Inhalt der QuelleThesis (PhD Doctorate)
Doctor of Philosophy (PhD)
Griffith School of Environment
Science, Environment, Engineering and Technology
Full Text
Batany, Stéphane. „Influence d’un macropore sur l’écoulement et le transport de solutés en milieu poreux : expérimentations sur sol modèle macroporé et simulations numériques“. Thesis, Paris Est, 2016. http://www.theses.fr/2016PESC1085/document.
Der volle Inhalt der QuelleFlow and transport modeling through porous media is of primary concern nowadays, especially in order to progress in the understanding of pollutant transfers through soils. Soils present frequently heterogeneities such as macropores (caused by fauna, flora or cracks) and several numerical models use double or multi permeability concepts in order to take into account all flow types that may exist in such porous systems. Nevertheless, classical models seem underestimate the macropore effect on preferential flow and transport by restricting the preferential flow zone only to the volume occupied by the macroporosity. Various experimental studies prior to this thesis have questioned this hypothesis. This study proposes to understand the establishment of preferential flow and transport and in particular the mechanism of flow and solute exchanges between a synthetic macropore and a surrounding porous matrix in saturated condition. For this purpose, water tracing are realized for a model porous media constituted by glass beads, crossed by a synthetic macropore and implemented in laboratory columns. Breakthrough and transport in columns are characterized by monitoring the concentration at the end of the column by magnetic nuclear resonance. A numerical model developed on the basis of lattice-Boltzmann method is used to simul ate flow in macroporous system and identify preferential flow mechanisms at pore scale. Experimental data show that tracer transport is strongly dependent on injection flow rate and the diffusion coefficient in water. At high flow rate, the transport seems to occur exclusively in the macropore, with very little masse exchange with the porous matrix. At lower flow rates, the breakthrough exhibits an inflexion followed by a peak. The MRI images show a significant mass exchange of tracer between the macropore and the surrounding porous matrix. The numerical simulations are used to calculate the flow field in a porous system as a function of flow rate. They show that preferential flow is extended in porous matrix into a zone of same dimension the mean diameter of beads regardless of macropore size or injected flow rate, in the range of simulated flow rates. These experimental and numerical results show that macropore influence on transport should be extended through the surrounding porous matrix into a zone of the same size of grains diameter for flow and into a zone depending on diffusion coefficient as well as mean residence time of the studied tracer for solute transport
Askar, Azza. „Macropore drainage of unsaturated swelling soil“. Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0028/MQ35826.pdf.
Der volle Inhalt der QuelleKramadibrata, Padmi. „A revision of the genus Calamus (Palmae) section Macropodus sensu Furtado“. Thesis, University of Reading, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.317720.
Der volle Inhalt der QuelleAsperger, Michael. „Zur Ätiologie und Bekämpfung der Lumpy Jaw Disease bei Kängurus“. Doctoral thesis, Universitätsbibliothek Leipzig, 2004. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-37575.
Der volle Inhalt der QuelleThe aim of this thesis was the investigation of the aetiology of Lumpy Jaw Disease (LJD) in macropods concentrating specifically on the causes of the diseases in current veterinary medicine literature and to evaluate the use of a group-specific Al(OH)3-adjuvanted, formalin-inactivated whole-cell vaccine for the control of LJD in kangaroos kept in zoos. LJD is regarded as periodontal disease, therefore the risk factors for the development of human periodontitis were also included in this study. The oral flora from 15 healthy macropods and 11 animals suffering from LJD was isolated. At least one anaerobic gram-negative bacterial species was found in swabs of each macropod. The occurrence of Fusobacterium nucleatum was associated with LJD (P < 0.05) by detecting this bacterium in 82% of the kangaroos suffering from LJD compared to only in 33% of the healthy animals. Prevotella oris/oralis and Capnocytophaga spp. were also predominantly found in diseased animals in comparison with healthy macropods (73% vs. 40% and 45% vs. 13% respectively). Bacteroides spp. and Porphyromonas gingivalis were isolated in only 3 and 2 kangaroos suffering from LJD, respectively. Contrary to previously published studies about LJD Fusobacterium necrophorum was not associated with LJD, as this anaerobe was detected in only 27% of the diseased as well as healthy macropods. Moraxella spp. seem to be a part of the normal oral flora of macropods and was found exclusively in healthy animals. 11 Red-necked Wallabies (Macropus rufogriseus) and 2 Red Kangaroos (Macropus rufus) were immunized with a group-specific Al(OH)3-adjuvanted, formalin-inactivated whole-cell vaccine containing previously in a kangaroo suffering from LJD isolated gramnegative anaerobs. The kangaroos were re-vaccinated after 1, 2, 6 and 12 months. Blood was collected from each animal at the same time. Antibodies were titrated against Fusobacterium necrophorum in an agglutination assay. The vaccine failed to induce increased levels of antibodies as well as to protect wallabies and kangaroos against LJD. As the highest antibody titres were detected in most severely diseased wallabies kept in the Hoyerswerda zoo, the protective role of the humoral immune response in LJD seems to be doubtful. The finding of detectable levels of antibodies in unvaccinated joeys supports the theory, that there is a transmission of antibodies from the mother to the offspring via colostrum or yolk-sac placenta. The diet of the Red-necked Wallabies in one zoo has induced an acidosis: The pH of the forestomach fluid collected by probang was lower in the animals of this zoo (pH = 7.53) than in the wallabies of two other zoos (pH = 8.25 and 8.38, respectively). Potassium, cholesterol and -amylase were also higher in the blood of the animals of this zoo in comparison to the wallabies of the two other ones, hence these blood values seem to be helpful for the diagnosis of chronic acidosis in macropods. There was a calcium and phosphor deficiency in the nutrition of the wallabies in two zoos, but the blood concentration of both of these minerals was not changed. The activity of the ALP correlated negative with the age of the Bennett`s Wallabies (P < 0.001, r = -.77 and r = -.62 respectively, depending on the instruments). All of the above mentioned blood values showed no differences between healthy and diseased animals and could so far not support the assumption, that an imbalance in Ca and P metabolism or an acidosis are important factors for LJD. The macropods of all investigated zoos were fed on a diet rich in vitamin A ranging from the 3.5 to the 41fold requirement for lambs. The vitamin A content of the diets for the 2 collections without a history of LJD was the lowest in this study. These results raised the point, that a hypervitaminosis A could be a more predisposing factor for LJD than a vitamin A deficiency. Due to the fact the plasma retinol concentration was independent from the vitamin A content of the diet and so not helpful in diagnosis of a vitamin A deficiency or toxicity, further investigations regarding the role of vitamin A in the aetiopathogenesis of LJD should include measurements of the liver tissue content of retinol esters. The glucose plasma concentration of the healthy Red Kangaroos (8.57 mmol/l) as well as the Red-necked Wallabies (6.51 mmol/l) was higher than previously published values for macropods, but also higher than the results of the diseased animals in this study. Therefore diabetes mellitus can be ruled out as an underlying factor for LJD. The analysis of 144 pathological records showed, that 30 animals died because of LJD, 20% of them and 16.7% of the other 114 macropods had a concurrent kidney disease. The urea and creatinin concentration in serum samples of healthy animals was not higher than the values of diseased animals. In conclusion, these results suggest kidney diseases are not important for the development of LJD. Altogether 184 sera collected from 107 kangaroos were tested for antibodies against MaHV-1 and MaHV-2 using a neutralisation assay. The prevalence of the MaHV-1- as well as MaHV-2-antibodies was high among the Red Kangaroos (94.4% and 97.2% respectively), but low among the Red-necked Wallabies (5.6% and 4.2% respectively). Seroconversion for MaHV-1 was seen in 2 out of 21 wallabies suffering from LJD, only 1 of these animals also had antibodies against MaHV-2. The antibody-titres against both of the macropodid herpes viruses also did not differ between Red Kangaroos with and without LJD, therefore a reactivation of a latent herpesvirus infection does not appear to be causative for LJD. In summary, considering the results of this study and previously published literature LJD is an infectious disease caused by gramnegative anaerobic bacteria with Fusobacterium nucleatum, Bacteroides spp., Porphyromonas gingivalis and Fusobacterium necrophorum subsp. necrophorum being of most significance. Recommendations concerning the keeping of kangaroos in captivity and the management of LJD are listed in the conclusion of this thesis. Some radiographs and photos of diseased and healthy kangaroos are attached
Sun, Xida. „Structured Silicon Macropore as Anode in Lithium Ion Batteries“. Wright State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=wright1316470033.
Der volle Inhalt der QuelleRatcliffe, Elizabeth B. „Short-term hydrological responses of a forested hillslope during rainstorms, at Panola Mountain Research Watershed, Georgia, USA“. Thesis, University of Bristol, 1996. http://hdl.handle.net/1983/099d7ff8-9ba5-41f8-ae62-78f063f8e8be.
Der volle Inhalt der QuelleRichings, Nadine Maree. „Growth, development and maturation of the marsupial follicle and oocyte /“. Connect to thesis, 2004. http://eprints.unimelb.edu.au/archive/00001516.
Der volle Inhalt der QuelleKaluli, James Wambua. „Effect of macropores on infiltration and percolation: An experimental investigation“. Thesis, University of Ottawa (Canada), 1990. http://hdl.handle.net/10393/5578.
Der volle Inhalt der QuelleFoca, Eugen [Verfasser]. „Macropores in Si : fundamental study and prospective applications / Eugen Foca“. Kiel : Universitätsbibliothek Kiel, 2008. http://d-nb.info/1019629452/34.
Der volle Inhalt der QuelleZuccolotto, Peter, of Western Sydney Nepean University und School of Science. „T-cell development in the Tammar wallaby (Macropus eugenii)“. THESIS_XXXX_SS_Zuccolotto_P.xml, 2000. http://handle.uws.edu.au:8081/1959.7/391.
Der volle Inhalt der QuelleDoctor of Philosophy (PhD)
Zuccolotto, Peter. „T-cell development in the Tammar wallaby (Macropus eugenii)“. Thesis, View thesis, 2000. http://handle.uws.edu.au:8081/1959.7/391.
Der volle Inhalt der QuelleZuccolotto, Peter. „T-cell development in the Tammar wallaby (Macropus eugenii)“. View thesis, 2000. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20030828.145055/index.html.
Der volle Inhalt der QuelleConnelly, L. J. „Modelling stormflow in natural subsurface pipes“. Thesis, Aberystwyth University, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.324211.
Der volle Inhalt der QuelleGibson, Craig Phillip, und res cand@acu edu au. „An Assessment of Animal Repellents in the Management of Vehicle-Macropod Collisions in New South Wales“. Australian Catholic University. School of Arts and Sciences NSW, 2008. http://dlibrary.acu.edu.au/digitaltheses/public/adt-acuvp187.09122008.
Der volle Inhalt der QuelleWeiler, Markus Helmut Weiler Markus Helmut. „Mechanisms controlling macropore flow during infiltration : dye tracer experiments and simulations /“. Zürich : ETH, Eidgenössische Technische Hochschule Zürich, IHW, Institut für Hydromechanik und Wasserwirtschaft, 2001. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=14237.
Der volle Inhalt der QuelleIshiguro, Munehide. „EFFECTS OF MACROPORES AND ELECTRIC CHARGES ON SOLUTE TRANSPORT IN SOILS“. Kyoto University, 1992. http://hdl.handle.net/2433/78038.
Der volle Inhalt der QuelleMcEwen, Amiana Marie. „Abundance, Distribution, and Geometry of Naturally Occurring Macropores in Stream Banks“. Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/95948.
Der volle Inhalt der QuelleMS
Gélin, Uriel. „Stratégies de reproduction des femelles du kangourou géant (Macropus giganteus)“. Thèse, Université de Sherbrooke, 2014. http://savoirs.usherbrooke.ca/handle/11143/87.
Der volle Inhalt der QuelleCombes, Anaïs Ducos de Lahitte Jacques. „Contribution à l'imagerie médicale du Wallaby de Bennett (Macropus rufogriseus)“. [S.l.] : [s.n.], 2007. http://oatao.univ-toulouse.fr/1793/1/debouch_1793.pdf.
Der volle Inhalt der QuelleLu, Xuanming. „Preparation of Low-Valence Metal Oxide Monoliths with Three-Dimensionally Interconnected Macropores“. Kyoto University, 2020. http://hdl.handle.net/2433/253113.
Der volle Inhalt der QuelleGibson, Craig Phillip. „An assessment of animal repellents in the management of vehicle-macropod collisions in New South Wales“. Thesis, Australian Catholic University, 2008. https://acuresearchbank.acu.edu.au/download/e53cefd0417a4154d6827c1e150b300d382f640bef7cda01bb261f756d965ccd/7156229/64877_downloaded_stream_102.pdf.
Der volle Inhalt der QuelleLane, Meg. „Sperm competition and sexual selection in western grey kangaroos Macropus fuliginosus“. Thesis, Lane, Meg (2014) Sperm competition and sexual selection in western grey kangaroos Macropus fuliginosus. Honours thesis, Murdoch University, 2014. https://researchrepository.murdoch.edu.au/id/eprint/25342/.
Der volle Inhalt der QuelleLapidge, Steven James. „Reintroduction biology of yellow-footed rock wallabies (petrogale xanthopus celeris and P. x. xanthopus“. University of Sydney. Biological Sciences, 2002. http://hdl.handle.net/2123/851.
Der volle Inhalt der QuelleChambers, Brian Kevan. „Human disturbance affects the ecology and population dynamics of the tammar wallaby, Macropus eugenii, on Garden Island, Western Australia“. University of Western Australia. School of Animal Biology, 2009. http://theses.library.uwa.edu.au/adt-WU2009.0139.
Der volle Inhalt der QuelleFrey, Stefan. „Novel formation regimes and mechanisms for macropores and porous anodic oxides in silicon“. [S.l.] : [s.n.], 2005. http://e-diss.uni-kiel.de/diss_1607/d1607.pdf.
Der volle Inhalt der QuelleFazenda, Inês Isabel Paulo. „Molecular and morphological characterization of the genus globocephaloides from macropodid marsupials in Australia“. Bachelor's thesis, Universidade Técnica de Lisboa. Faculdade de Medicina Veterinária, 2009. http://hdl.handle.net/10400.5/1302.
Der volle Inhalt der QuelleThe genus Globocephaloides (Nematoda: Trichostrongyloidea) is a pathogenic group of parasitic nematodes present in the duodenum of kangaroos and wallabies (Marsupialia: Macropodidae) in Australia. Globocephaloides species (G. trifidospicularis, G. macropodis and G. affinis) have been poorly studied and thus, there are significant controversies regarding their systematics and population structures. In the present study, single-strand conformation polymorphism (SSCP) and targeted sequencing of the internal transcribed spacers (ITS) of nuclear ribosomal DNA, were used to assess the genetic variation within and among Globocephaloides populations and individuals, from different host species and geographical origins. No or minor (0.2%) variation was detected among individuals of G. trifidospicularis and G. affinis. However, within G. macropodis populations there was a consistent heterogeneity in the ITS sequences (5.2 - 7.1%) between worms derived from two different host species (Macropus agilis and M. dorsalis). Under light microscopy, these two G. macropodis genotypes differed by the length, arrangement and tip of the spicules, and by pattern of the bursal rays. Thus, they were considered to represent sibling species. The molecular and morphological evidence culminated with the erection of a new species, namely G. wallabiae, and provided further insights into the host affiliation and geographical ranges of Globocephaloides spp.: G. wallabiae occurs mainly in M. dorsalis (north/east), G. macropodis in M. agilis and Petrogale persephone (north), G. affinis in M. dorsalis (north-east), and G. trifidospicularis in various Macropus species (south). Moreover, in the present study, the phylogenetic analyses between the genus Globocephaloides and other trichostrongyloid genera, using divergent domains of the 28S rRNA genes, gave evidence for the exclusion of the genus Globocephaloides from the Herpetostrongylidae, with the suggestion of a new family, namely „Globocephaloididae‟, within the Heligmosomoidea.
RESUMO - CARACTERIZAÇÃO MOLECULAR E MORFOLÓGICA DO GÉNERO GLOBOCEPHALOIDES EM MARSUPIAIS MACROPODÍDEOS NA AUSTRÁLIA - O género Globocephaloides (Nematoda: Trichostrongyloidea) é um importante grupo de nemátodes patogénicos presente no duodeno de cangurus e wallabies (Marsupialia: Macropodidae) na Austrália. O estudo das espécies de Globocephaloides (G. trifidospicularis, G. macropodis e G. affinis) tem sido limitado, e por isso, existem numerosas controvérsias em relação à sua sistemática e às suas estruturas populacionais. No presente estudo, as técnicas de análise de ácidos nucleicos, „single-strand conformation polymorphism‟ (SSCP) e sequenciação-alvo da região ITS („internal transcribed spacers‟) do DNA ribossomal foram usadas com o objectivo de analisar a variação genética entre indivíduos e populações de Globocephaloides provenientes de diferentes hospedeiros e áreas geográficas. Em ambas as espécies G. trifidospicularis e G. affinis pouca ou nenhuma variação foi encontrada (0.2%). Contudo, nas populações de G. macropodis foi detectada uma consistente heterogeneidade nas sequências ITS (5.2 - 7.1%) entre espécimes provenientes de dois hospedeiros distintos (Macropus agilis e M. dorsalis). Recorrendo à microscopia óptica verificou-se que os dois genótipos de G. macropodis diferiam no comprimento, conformação e ponta das espículas, assim como, no padrão dos raios da bolsa copuladora. Como tal, foi considerado que os dois genótipos representavam duas espécies congéneres. Os resultados da biologia molecular e do estudo morfológico determinaram o reconhecimento de uma nova espécie denominada G. wallabiae e, além disso, forneceram dados sobre a especificidade de hospedeiros e distribuição geográfica do género Globocephaloides. G. wallabiae ocorre principalmente no hospedeiro M. dorsalis (norte/este), G. macropodis no M. agilis e Petrogale persephone (norte), G. affinis no M. dorsalis (nordeste) e G. trifidospicularis em várias espécies do género Macropus (sul). Adicionalmente, a análise das relações filogenéticas entre o género Globocephaloides e outros tricostrongilídeos, empregando os domínios do gene 28S rRNA, deu provas para a exclusão do género Globocephaloides da família Herpetostrongylidae, com a sugestão de uma nova família, denominada „Globocephalidae‟, inserida na superfamília Heligmosomoidea.
Financial support provided to the supervisors for the present study was from bodies including the Australian Research Council (ARC) [to Robin B. Gasser] and Australian Biological Resources Study (ABRS) [to Ian Beveridge]
Kobayashi, Katsutoshi. „Formation of Ordered Macropores in p-Type Silicon and Their Application to Templates“. Kyoto University, 2009. http://hdl.handle.net/2433/123890.
Der volle Inhalt der Quelle0048
新制・課程博士
博士(エネルギー科学)
甲第14737号
エネ博第190号
新制||エネ||43(附属図書館)
UT51-2009-D449
京都大学大学院エネルギー科学研究科エネルギー基礎科学専攻
(主査)教授 尾形 幸生, 教授 萩原 理加, 准教授 作花 哲夫
学位規則第4条第1項該当
Akay, Onur. „Laboratory experiments and numerical modeling of the interconnectivity of macropores and subsurface drainage /“. Full text available from ProQuest UM Digital Dissertations, 2007. http://0-proquest.umi.com.umiss.lib.olemiss.edu/pqdweb?index=0&did=1609001651&SrchMode=1&sid=4&Fmt=2&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1244736298&clientId=22256.
Der volle Inhalt der QuelleFrutuoso, Leonel Faria. „Clínica de animais selvagens e de zoo“. Master's thesis, Universidade de Évora, 2015. http://hdl.handle.net/10174/14575.
Der volle Inhalt der QuelleG??lin, Uriel. „Strat??gies de reproduction des femelles du kangourou g??ant (Macropus giganteus)“. Thèse, Universit?? de Sherbrooke, 2014. http://savoirs.usherbrooke.ca/handle/11143/87.
Der volle Inhalt der QuelleHolden, Joseph. „Runoff production in blanket peat covered catchments“. Thesis, Durham University, 2000. http://etheses.dur.ac.uk/4264/.
Der volle Inhalt der QuelleBadel, Xavier. „Development of macropore arrays in silicon and related technologies for X-ray imaging applications“. Licentiate thesis, KTH, Microelectronics and Information Technology, IMIT, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-1623.
Der volle Inhalt der QuelleDigital devices have started to replace photographic film inX-ray imaging applications. As compared to photographic films,these devices are more convenient to obtain images and tohandle, treat and store these images. The goal of the presentstudy is to develop macropore arrays and related silicontechnologies in order to fabricate X-ray imaging detectors formedical applications, and in particular for dentistry. Althougha few detectors are already available on the market, theirperformances, such as the X-ray sensitivity, can still beimproved. In addition, the image quality, defined by thespatial resolution and the signalto- noise ratio (SNR), shouldbe sufficiently high to enable diagnosis and, as regard to thepatient health, the X-ray dose should be reduced to aminimum.
Three detector concepts were investigated. All of themrequire the formation of a macropore array in silicon as afirst step in the detector fabrication. Even though deepreactive ion etching was used to form these macropore arrays,silicon electrochemical etching in aqueous hydrofluoric acid(HF) solution has been more intensively studied. The porespacing was fixed to about 50 µm in order to achieve aspatial resolution of 10 lp/mm, as required in dentalapplication. Pore depths up to 420 µm with diameterranging from 10 to 40 µm, depending on the detectorconcept, have been achieved. Electrochemical etching of siliconis, indeed, a very promising technique to fabricate high aspectratio structures and damage-free macropore arrays. Thistechnique is based on a silicon dissolution reaction involvingthe species of the HF solution, silicon atoms and holes, thepositive charge carriers. As holes are the minority carriers inn-type silicon, they are usually photogenerated. However, wealso developed an alternative technique based on hole injectionfrom a forwardbiased p-n junction, and the possibility to formmacropore arrays and diverse threedimensional structures wasdemonstrated.
The first detector concept investigated consists of asilicon charge-coupled device (CCD) in proximity with ascintillating guide screen. This screen is made of a siliconmacropore array filled with CsI(Tl), emitting photons at awavelength of 550 nm (green light) under X-ray exposure. Thevisible light is then reflected on the walls of the pores inorder to be detected by the CCD pixels. Both oxide and metalcan be used as a reflective layer. Such detectors were fullyfabricated and characterized, showing good spatial resolutionand comparable results with currently available detectorsconcerning the SNR and the X-ray dose. The second detectorstudied in this thesis uses photodiodes, instead of a CCD, inorder to detect the photons emitted from the scintillator. Thisconcept would lead to high charge collection efficiency sincethe diodes are formed in the silicon pore walls, making thedistance between the generation and detection points of thevisible photons short. However, this design implies two majordifficulties in the detector fabrication: formation of p-njunction in the pore walls and formation of contacts to thediodes. Thus, boron diffusion from a solid source andlow-pressure chemical vapor deposition of boron-dopedpoly-silicon were experimented. Both techniques were shown tobe successful. The last detector concept is based on thegeneration of electron/hole pairs in the semiconductor bulkunder X-ray exposure. The generated charges would then becollected by electrodes going through the bulk, requiringformation of deep and narrow pores. Siliconphoto-electrochemical etching was used and 425-µm deeppores with a diameter of 14 µm were formed, resulting inan aspect ratio of ~ 30 and an active area of 90 %.
Asare, Seth Ntiri. „Investigation of soil macroporosity and macropore flow in agricultural soils using volume CT scanner“. Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0007/NQ40361.pdf.
Der volle Inhalt der QuelleMcDonald, Douglas Joseph. „The role of macropores in subsurface flow on a forested slope, an experimental investigation“. Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ40480.pdf.
Der volle Inhalt der QuelleMori, Yasushi. „SOFT X-RAY VISUALIZATION AND ANALYSIS ON HYDRAULIC AND GEOMETRICAL PROPERTIES OF SOIL MACROPORE“. Kyoto University, 1999. http://hdl.handle.net/2433/182434.
Der volle Inhalt der QuelleVivian, Benjamin James. „The role of rapid recharge processes in the initiation of landslides“. Thesis, University of Oxford, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.286619.
Der volle Inhalt der QuelleVasenkov, Sergey, und Pavel Kortunov. „PFG NMR measurements of tortuosity factors for diffusion in meso- and macropores of FCC catalysts“. Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-197145.
Der volle Inhalt der QuelleNaveed, Muhammad, Per Moldrup, Marcel G. Schaap, Markus Tuller, Ramaprasad Kulkarni, Hans-Jörg Vogel und de Jonge Lis Wollesen. „Prediction of biopore- and matrix-dominated flow from X-ray CT-derived macropore network characteristics“. COPERNICUS GESELLSCHAFT MBH, 2016. http://hdl.handle.net/10150/621951.
Der volle Inhalt der QuelleVasenkov, Sergey, und Pavel Kortunov. „PFG NMR measurements of tortuosity factors for diffusion in meso- and macropores of FCC catalysts“. Diffusion fundamentals 1 (2005) 2, S. 1-11, 2005. https://ul.qucosa.de/id/qucosa%3A14484.
Der volle Inhalt der QuelleAbdallah, Adel. „Modélisation de l'infiltration dans les sols fins compactés : intégration des écoulements préférentiels dans les macropores“. Vandoeuvre-les-Nancy, INPL, 1999. http://docnum.univ-lorraine.fr/public/INPL_T_1999_ABDALLAH_A.pdf.
Der volle Inhalt der QuelleIn order to investigate the integration of preferential flow through macropores observed in compacted fine-textured soils, 3 different modeling approaches are developed. The first considers a homogeneous medium whose hydraulic properties are described by the Van Genuchten & Mualem' s formulation. The second is based on the double-porosity concept where the soil matrix and the macropores are treated as two different flow-domains presenting different hydraulic parameters and an exchange equation takes into account the interaction mechanism. The third assumes that the pore-size distribution and consequently, the water retention and hydraulic conductivity curves follow bimodal laws also described by Van Genuchten & Mualem's formulation. For each one of these approaches, a direct model simulating the vertical infiltration and an inverse procedure for parameter estimation are presented. The simulations of laboratory infiltration tests are confronted with the experimental data. This reveals that the double-porosity concept, while providing a more realistic description of the infiltration process in macroporous soils, is limited in practice, since the two-domain parameters estimation is shown to be complex. The more pragmatic approaches based on the integration of macropores effect in the soil hydraulic properties through unimodal and bimodal functions are shown to be more interesting. The parameter estimates obtained for these 2 approaches suggest that the pore-size distribution of compacted fine-textured soils varies between unimodal and bimodal laws depending on initial water-content and compaction procedure
Dodt, William G. „On the evolution of kangaroos and their kin (family Macropodidae) using retrotransposons, nuclear genes and whole mitochondrial genomes“. Thesis, Queensland University of Technology, 2018. https://eprints.qut.edu.au/116286/1/William_Dodt_Thesis.pdf.
Der volle Inhalt der QuelleRamsey, David. „Feeding strategies and habitat utilisation of insular populations of the agile wallaby (Macropolis agilis) and the swamp wallaby (Wallabia bicolor): Implications for management of a coastal ecosystem on South Stradbroke Island, Queensland“. Thesis, Queensland University of Technology, 1996. https://eprints.qut.edu.au/105697/1/T%28S%29%20116%20Feeding%20strategies%20and%20habitat%20utilisation%20of%20insular%20populations%20of%20the%20agile%20wallaby%20%28Macropus%20agilis%29%20and%20the%20swamp%20wallaby%20%28Wallabia%20b.pdf.
Der volle Inhalt der QuellePechenik, Natalie. „Lateral macropore dominated flow on a clay settling area in the phosphate mining district, peninsular Florida“. [Tampa, Fla] : University of South Florida, 2009. http://purl.fcla.edu/usf/dc/et/SFE0002982.
Der volle Inhalt der QuelleRoure, EC. „Flexibility in antipredator behaviour of Tasmanian macropods to altered devil abundance“. Thesis, 2019. https://eprints.utas.edu.au/34775/1/Roure_whole_thesis.pdf.
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