1,974 research outputs found
Survey report 1978/79 Glaciology department Author - B.A. Murphy
No full textProgress Code: completedStatement: See the report for further information.
The values provided in spatial coverage are approximate only. The values provided in temporal coverage are based on the assumption that B.A. Murphy travelled to and from Davis by scheduled Australian Antarctic voyages.Taken from sections of the report:<br/><br/>Introduction:<br/><br/>The following report is a detailed summary of the surveying and mapping tasks undertaken in the Vestfold Hills and Mac. Robertson Land regions of the Australian Antarctic Territory during the period from 22 December 1978 to 25 February 1979. A copy of the project instruction detailing the tasks originally intended to be undertaken is attached at Annex 37.<br/><br/>The entire report is available as a pdf download from the URL given below
A survey of Fusarium species occurring in the grassland biome of South Africa
No full textAbstract: Please refer to full text to view abstract.Ph.D. (Botany and Plant Biotechnology
Fusarium spp. associated with soils from the Golden Gate Highlands National Park, South Africa.
No full textAbstract: Please refer to full text to view abstract.M.Sc. (Botany and Plant Biotechnology
The diversity of the genus Fusarium in soil from the Willem Pretorius Nature Reserve, South Africa
No full textM.Sc.Abstract: Please refer to full text to view abstract
A case for re-inventory of Australia’s plant pathogens
No full textAustralia has efficient and visible plant quarantine measures, which through various border controls and survey activities attempt to prevent the entry of unwanted pests and diseases. The ability to successfully perform this task relies heavily on determining what pathogens are present and established in Australia as well as those pathogens that are exotic and threatening. There are detailed checklists and databases of fungal plant pathogens in Australia, compiled, in part, from surveys over many years sponsored by Federal and State programmes. These checklists and databases are mostly specimen-based, which enables validation of records with reference herbarium specimens and sometimes associated cultures. Most of the identifications have been based on morphological examination. The use of molecular methods, particularly the analysis of DNA sequence data, has recently shown that several well-known and important plant pathogenic species are actually complexes of cryptic species. We provide examples of this in the important plant pathogenic genera Botryosphaeria and its anamorphs, Colletotrichum, Fusarium, Phomopsis / Diaporthe and Mycosphaerella and its anamorphs. The discovery of these cryptic species indicates that many of the fungal names in checklists need scrutiny. It is difficult, and often impossible, to extract DNA for sequence analysis from herbarium specimens in order to validate identifications that may now be considered suspect. This validation can only be done if specimens are recollected, re-isolated and subjected to DNA analysis. Where possible, herbarium specimens as well as living cultures are needed to support records. Accurate knowledge of the plant pathogens within Australia's borders is an essential prerequisite for the effective discharge of plant quarantine activities that will prevent or delay the arrival of unwanted plant pathogens
Review on the B.A. Muratov’s monograph “Ethnogenesis of the Bashkirs: Historiography and Contemporary Research”
No full textThe author of this review examines four main types of errors contained in the B.A. Muratov’s book “Ethnogenesis of the Bashkirs: Historiography and Contemporary Research”.
Factual errors. The author often makes factual errors by inventing some facts or ideas, which he attributes to certain researchers.
Methodological errors. An improper use of the population genetics methods has led the author of this monograph to incorrect conclusions. The author does not use at all such methods as multidimensional scaling, calculation of genetic distances, AMOVA, cluster analysis, etc. In turn, the author incorrectly uses such methods as the construction of phylogenetic networks and the allocation of close haplotypes based on networks of clusters. The author has not made a selection of modal haplotype (haplotype of the founder). He made a lot of mistakes in calculating TMRCA (the lifetime of the first common ancestor) based on genealogical and evolutionary rates of mutations. One of the main error is the small sample size for the study of Bashkir clans (n=45). Therefore, the conclusions drawn from such a small sample, are poorly reasoned.
Historical fantasy. For example, B.A. Muratov quite unreasonably hypothesizes about the genetic connection of the Bashkir tribe Burzyan with the Mongol tribe Kiyat-Bordjigin. He also put forward unsubstantiated hypotheses about the genetic connection of the same Bashkir tribe Burzyan with Kurds, Ossetians-Digorians, Berendeys. At the same time. Muratov, naturally, did not provide any genetic evidence (belonging to a common terminal SNP-marker).
Grammatical mistakes. The main thesis of the B.A. Muratov’s book sounds like: the Bashkirs are (certain) “Turanians”. The main mistake here is the identification of SNP-marker Z2123 with the ethno-religious category of “Turan”. This identification is not methodologically correct as social constructs and genetic markers are different in nature of their appearance, functioning and development. Thus, the mixing of genetic markers and ethno-religious is not methodologically correct when reconstructing history
Myrtaceae, a cache of fungal biodiversity
No full textTwenty-six species of microfungi are treated, the majority of which are associated with leaf spots of Corymbia, Eucalyptus and Syzygium spp. (Myrtaceae). The treated species include three new genera, Bagadiella, Foliocryphia and Pseudoramichloridium, 20 new species and one new combination. Novelties on Eucalyptus include: Antennariella placitae, Bagadiella lunata, Cladoriella rubrigena, C. paleospora, Cyphellophora eucalypti, Elsinoë eucalypticola, Foliocryphia eucalypti, Leptoxyphium madagascariense, Neofabraea eucalypti, Polyscytalum algarvense, Quambalaria simpsonii, Selenophoma australiensis, Sphaceloma tectificae, Strelitziana australiensis and Zeloasperisporium eucalyptorum. Stylaspergillus synanamorphs are reported for two species of Parasympodiella, P. eucalypti sp. nov. and P. elongata, while Blastacervulus eucalypti, Minimedusa obcoronata and Sydowia eucalypti are described from culture. Furthermore, Penidiella corymbia and Pseudoramichloridium henryi are newly described on Corymbia, Pseudocercospora palleobrunnea on Syzygium and Rachicladosporium americanum on leaf litter. To facilitate species identification, as well as determine phylogenetic relationships, DNA sequence data were generated from the internal transcribed spacers (ITS1, 5.8S nrDNA, ITS2) and the 28S nrDNA (LSU) regions of all taxa studie
Numerical and experimental research of wave interaction with a porous breakwater
No full textThe design formula for rubble mound breakwaters by Van der Meer has an unclear Notional Permeability term. This term causes a lot of confusion for designers. In the past many people have tried to derive a better formulation for that term by experimental and analytical research. The goal of this study was to obtain a better formulation along a numerical way. This study explores the numerical possibilities and tries to define which direction has to be taken in future research. As a first step, a very simplified case is taken with a vertical homogeneous breakwater which interact with monochromatic waves. In total six different blocks were made of epoxy and elastocoast. Only 4 out of the 6 blocks were tested. Also the porosity (n), laminar friction (?) and turbulent friction constant (?) of the blocks were determined experimentally. This way the experimental results could be compared with computations. These experiments have been done in the large flume of the Environmental Fluid Mechanics Laboratory of the TU Delft. Two types of data were collected: pore pressures and water levels in front and behind the block. The water levels seemed to be the most reliable data. The main deficit of the setup was the wave absorber at the end of the flume. The wave absorber is not able to sufficiently absorb long waves. So the dataset had to be corrected for that effect. The created dataset was in line with results from earlier experiments. Results were compared with an analytical solution and the numerical SWASH model. Comparisons with the analytical solution showed a reasonable fit without any calibration. The SWASH model showed in first instance large deviations using the same dataset. By calibrating the turbulent flow resistance ?, it was possible to generate a decent fit. However, the used ? constants are 6-10 times higher than the measured ? constants. This is physically unrealistic high. Therefore the most likely explanation is an error in the transition between the water and the porous medium. During the experiment discontinuities can occur on this transition while SWASH uses an continuity requirement. Numerical tests were performed on some multi-layered combinations of the different blocks in order to derive a "Vertical P" value in a similar way as Van der Meer determined his P=0.4 structure. The results showed, nevertheless, quite some different patterns as the computations done by Van der Meer. However, taking into account all the problems with calibrating the SWASH model the results for the notional permeability seemed very promising. This numerical method shows the possibility of numerically calculating a notional permeability and should be investigated further in the future.Enviromental Fluid MechanicsHydraulic EngineeringCivil Engineering and Geoscience
Norma Coverdale, B.A.: the treatment of women in selected works of Henry de Montherlant
No full textThe aim of this thesis is to determine how women are treated in selectedworks of Henry de Montherlant. This is explored by examining their relationshipswith other women as well as with men. Inevitably, this leads to an analysis ofthe multifaceted area of love. Part I researches Montherlant's prose work and included in this section is the investigation of the importance of 'l'ordre male' to the author and the influence this exerts over his early prose work in the areas of tauromachy, war and sport, and where the male adherence to this concept leaves women. The 'syncretisme et alternance' which is central to Montherlant's thinking is explored in this section.Part 2 is concerned with Montherlant's theatre in which the psychological development of the main characters is of great importance. It is in this section that a comparative study is made of the influence of Mme. Elisabeth Zehrfuss' written contribution to La Reine morte. Her unpublished notes are set out in full in the Appendix. The thesis also draws on the unpublished correspondence between Henry de Montherlant and Elisabeth Zehrfuss between the years 1934 and 1945. An investigation is made as to whether or not there are any differences between the way women are treated in Montherlant's prose and in his theatre and the conclusion is drawn that there are
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