Littérature scientifique sur le sujet « Wool Genetic aspects »
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Articles de revues sur le sujet "Wool Genetic aspects"
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Oliveira, Nelson Manzoni de, et José Carlos Ferrugem Moraes. « ENVIRONMENTAL AND GENETIC EFFECTS ON PRODUCTION TRAITS OF EWES ORIGINALLY FROM DISTINCT ENVIRONMENTS ». Ciência Rural 23, no 3 (décembre 1993) : 347–50. http://dx.doi.org/10.1590/s0103-84781993000300019.
Texte intégralRésumé :
Wool production and reproductive performance components of similar genotypes, brought from distinct production areas, were evaluated during five years trial at similar environments, such as, joining season and stocking rate on winter improved pasture. The least squares means revealed that the origin (breed) effect concentrated upon the Corriedale ewes wool production, whereas in Romney females it affected the reproductive performance. In the abscence of interaction between origin (breed) and year for most variables, it was assumed that the farm management procedures and/or selection criteria applied on hoggets were determinant of the subsequent lifetime production within each genotype examined. Expecting a better reproductive performance in Romneys, mainly rate of lambs born, weaned and lambs weaning weight, comments were made on the selection criteria employed on this breed over many years. The work has demonstrated that "property of origin (breed)" of sheep composing any experiment aiming at breed comparisons, should be considered as a potential factor capable of biasing information on productive aspects.
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Nagorcka, BN. « The reaction-diffusion (RD) theory of wool (hair) follicle initiation and development. I. Primary follicles ». Australian Journal of Agricultural Research 46, no 2 (1995) : 333. http://dx.doi.org/10.1071/ar9950333.
Texte intégralRésumé :
A spatial prepattern mechanism based on a biochemical reaction referred to as a reaction-diffusion (RD) system is able to account for many aspects of the initiation and development of primary wool follicles. The RD system can spontaneously produce spatial patterns in the distribution of its chemical components within the epidermis and epithelium. The first pattern produced in the epidermis by the chosen RD system is a spotted pattern which gives rise to the first generation of primary central follicles. Follicles initiate at the location of the spots, i.e. the localized regions where maxima exist in the concentration of the chemical components of the RD system. As the primordial follicles begin to grow, changing their shape and size, the RD system is able to produce a time sequence of spatial prepatterns within the follicles. These spatial prepatterns have the capacity to regulate the development of the follicles, causing them to grow at an angle to the skin surface and providing a temporo-spatial cue for the initiation of a sweat gland. The same prepatterns which regulate the development of the primordial follicles also cause the early stage follicles to function as organizers. They do this by causing the spatial prepattern in the epidermis to change, resulting in the initiation of new generations of follicles. The prepatterns are able to cause the formation of trio groups of primary follicles, the alignment of these groups, and the rapidly increasing density of primary follicles observed during the early stages of wool follicle initiation. The prepattern mechanism also predicts the existence of an inverse genetic correlation between the density of spots and the size (diameter) of the spots produced by the RD system in the epidermis. As a result we expect a strong genetic correlation to exist between the density of primary follicles and the diameter of the fibres which those follicles produce. The same prepattern mechanism is able to account for many aspects of secondary follicle initiation and development, as described in an accompanying paper.
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Williams, AJ, et AJ Williams. « Some comparative studies of sulfate metabolism in Merino sheep genetically different in wool production ». Australian Journal of Agricultural Research 46, no 2 (1995) : 415. http://dx.doi.org/10.1071/ar9950415.
Texte intégralRésumé :
Several aspects of sulfate metabolism were compared in sheep from two selection flocks, selectively bred for either high (Fl+) or low (FI-) clean fleece weight per head. These were studied within a 23 factorial design: 2 flocksx2 levels of formaldehyde treated casein in diet (0 or 80 g day-1)x2 levels of subcutaneous L-thyroxine (0 or 1 mg day-1) with 4 sheep per cell. The treatments influenced the rates of wool growth and the output of sulfur in wool (P < 0.05), but with interactive effects (P < 0.05). The F1+ sheep produced 24 and 32 8g sulfur in wool cm-2 day-1at the midside when consuming the control and casein supplemented diet. The outputs of sulfur in wool by F1- sheep consuming these two diets were 16 and 17 8g cm-2 day-1. The thyroxine treatment increased the rate of growth of wool by 11% (P < 0.05), but did not increase average fibre diameter or the sulfur content of wool. Sulfate was cleared more rapidly (P < 0.05) from the plasma of sheep consuming the casein supplemented diet, with a rate constant of 0.134 h-1, compared to 0.099 h-1for the control sheep. The rate constants for Fl+ and F1- sheep were 0.102 and 0.131 h-1 respectively (P < 0.05). The concentration of sulfate in plasma was similar in all treatment groups: 1.3 mmol L-1The differences in the clearance of sulfate from plasma were reflected in similar differences in the proportion of the injected 35S-sulfate excreted in urine during the following 24 h. The sheep of the F1- flock and those consuming the casein-supplemented diet excreted significantly greater proportions of the injected 35S in urine (P < 0.05). In a second experiment, adult sheep (n = 24), the progeny of F1+ or F1- rams mated with a flock of medium wool Merino ewes, were randomly allocated to a low (c. 0.8 maintenance, 1 g sulfur day-1) or high (c. 2xM, 3 g sulfur day-1) dietary regime. [35S] sodium sulfate was again injected intravenously. There were no significant differences between the genetic groups for (i) sulfate concentration in plasma, (ii) total and net rates of irreversible loss of sulfate from plasma, (iii) the proportion of the injected [35S] sodium sulfate excreted in urine, (iv) the proportion of the excreted 35S present in urine as sulfate, and (v) the quantity of sulfate excreted in urine daily. However, the dietary treatments significantly influenced all these traits, except the concentration of sulfate in plasma. The direction of these effects was consistent with the proposition that sheep regulate excretion of sulfate from kidneys to maintain homeostasis of sulfate within the body. The smaller phenotypic difference in wool production between the two half-bred flocks in the second experiment, probably limited the chances of detecting any differences in the metabolism of sulfate.
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Nagorcka, BN. « The reaction-diffusion (RD) theory of wool (hair) follicle initiation and development. II. Original secondary follicles ». Australian Journal of Agricultural Research 46, no 2 (1995) : 357. http://dx.doi.org/10.1071/ar9950357.
Texte intégralRésumé :
In an accompanying paper it was shown that a spatial prepattern mechanism based on a biochemical reaction referred to as a reaction-diffusion (RD) system is able to account for many aspects of the initiation and development of primary (P) wool follicles. In this paper the same RD system is applied to the initiation and development of original secondary (SO) follicles. Prepatterns are generated by solving the equations describing the reaction and diffusion of the chemical components of the RD system in early stage follicles. It is demonstrated that the prepattern mechanism can account for the loss of a sweat gland causing a change from P follicle initiation to SO follicle initiation. The RD system equations are also solved in the epidermis. The time sequence of prepatterns obtained in the epidermis account for the tendency of SO follicles to group with P follicles, by initiating in-between members of the trio group of P follicles as well as in between existing SO follicles. The prepatterns obtained did not account for the tendency of secondary follicles to initiate on the posterior side of the trio group. Good agreement was obtained between the predicted increase in total follicle density and the increase in follicle density observed during follicle initiation by Carter and Hardy (1947), provided full account was taken of the interaction between existing follicles and each new future generations of follicles. The prepattern mechanism provides a fundamental basis for an inverse genetic correlation between total P and SO follicle density and fibre diameter.
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Costa, Pablo Tavares, Jaqueline Schneider Lemes, Gilson de Mendonça, Michelle da Silva Gonçalves, Rômulo Tavares Costa et Thiago Pereira Vieira. « Meat quality of white and natural colored male lambs raised in the Pampa Biome ». Revista Ceres 64, no 2 (avril 2017) : 109–14. http://dx.doi.org/10.1590/0034-737x201764020001.
Texte intégralRésumé :
ABSTRACT Sheep meat quality is influenced by a number of factors either intrinsic (species, breed, sex, and age) or extrinsic (nutrition, environment, and pre- and post-slaughter handling) to the animal. However, it is not known whether wool fibre color variations within the same breed can influence the instrumental and sensory characteristics of the meat. Thus, the objective of this study was to investigate the effect of the genetic group on the instrumental and sensory characteristics of meat of white and natural colored Corriedale lambs. The 29 lambs (13 natural colored and 16 white) used in the experiments were raised on natural pasture under extensive grazing conditions in the region of the Pampa Biome, Rio Grande do Sul, Brazil. The animals were slaughtered at average age of 18 months. Meat evaluations were performed on samples from longissimus dorsi muscles. The analysis of variance was used to evaluate the effect of the genetic group and the means were compared by the F test. The instrumental analysis showed that meat of natural colored lambs had darker red color, higher 24 h pH, and higher scores for fat cover and texture. Sensory profiling was performed by nine trained panelists in four sessions. The sensory evaluation showed that natural colored lambs had darker red color, higher scores of fat taste and characteristic taste to the species. Despite significant differences in some sensory aspects, the samples were equally accepted by the panelists. Meat of natural colored Corriedale lambs had different instrumental and sensory profiles from that of white lambs.
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Adams, N. R., J. R. Briegel, J. C. Greeff et E. N. Bermingham. « Feed intake, body composition, and plasma metabolic hormones in Merino sheep that differ genetically in fleece weight or fibre diameter ». Australian Journal of Agricultural Research 57, no 1 (2006) : 27. http://dx.doi.org/10.1071/ar05086.
Texte intégralRésumé :
Negative genetic correlations result in sheep selected for fleece weight having reduced fatness and reproductive turnoff. Both of these characteristics depend mainly on energy metabolism, but the links between wool growth and energy metabolism are poorly defined. The present study examined aspects of energy metabolism (body composition, feed intake, and metabolic hormones) in Merino sheep with high or low estimated breeding values for clean fleece weight (CFW) or fibre diameter (FD). The groups were selected to have similar mean liveweights. High CFW sheep had a lower proportion of fat (P < 0.01) and more lean tissue (P < 0.05) in their body, and ate more of a medium-quality diet (P < 0.05). Intake of a straw diet with low digestibility that imposed a physical constraint on feed intake was not associated with CFW. When fed at the same level (1.2 × calculated maintenance), high CFW sheep had lower plasma concentrations of glucose (P < 0.01), insulin (P < 0.05), and insulin-like growth factor-1 (P < 0.05), and higher concentrations of growth hormone (P < 0.001). Responses of plasma insulin or glucose to treatment with insulin, adrenaline, or propranolol were independent of CFW. No differences were found between the high and low FD groups, except that the plasma cortisol response to adrenocorticotrophic hormone (ACTH) was higher in sheep with low FD. Calculations indicate that the lower fat reserves and plasma insulin and glucose concentrations in the high CFW sheep are sufficient to account for previous reports of reduced number of lambs weaned in high CFW sheep. Furthermore, the results indicate that high CFW sheep have smaller metabolic energy reserves to withstand unfavourable feed conditions, and so may be less able to thrive and reproduce successfully in harsh feed environments.
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McKenney, Dan. « Thinking about the economics of genetic resource management for Canadian forestry ». Forestry Chronicle 77, no 1 (1 février 2001) : 105–9. http://dx.doi.org/10.5558/tfc77105-1.
Texte intégralRésumé :
This paper reviews the rationale and approach to economic analysis of practices aimed at managing the genetic aspects of forests. Some forest genetics, like tree improvement, involve costs aimed at increasing wood production. Other "forest genetics" activities may be aimed at managing populations of both commercial and non-commercial values. Economic analysis is relevant to both categories but it can be misapplied and mis-interpreted. Good economic analysis should confront the notion of trade-offs head-on, whether assessing intensive silviculture or options to achieve the non-wood objectives so mired in current management. The paper provides a background on forest economics in both settings, an actual tree improvement example, and some conjecture on future directions in applied forest economics. Key words: forest economics, forest genetics and tree improvement, evolutionary processes, trade-offs
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Assis, Teotônio Francisco, et Marcos Deon Vilela de Resende. « Genetic improvement of forest tree species ». Crop Breeding and Applied Biotechnology 11, spe (juin 2011) : 44–49. http://dx.doi.org/10.1590/s1984-70332011000500007.
Texte intégralRésumé :
Brazilian forestry sector is considered one of the most developed in the world, being the base for important industrial segments which use wood as raw material. Tree breeding has played an important role on improving the competitiveness of Brazilian forestry-based companies, especially for its positive reflexes on increasing adaptation, forestry productivity and wood quality. In spite of the importance of other forest trees for the economy, such as Schizolobium, Araucaria, Populus and Hevea, the main genera under genetic improvement in the country are Eucalyptus, Pinus, Acacia and Tectona. They are used by industries like pulp and paper, siderurgy, tannin, chips for exportation and lumber, constituting an important source of revenues for the Brazilian's economy, besides their positive social and environmental impacts. This paper presents a generic approach to genetic improvement aspects of these four major genera currently undergoing breeding in Brazil.
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Adutwum, Jerry Oppong, et Junji Matsumura. « Spatiotemporal variation and covariation of heartwood color in planted teak wood from Ghana ». BioResources 17, no 4 (19 septembre 2022) : 6178–90. http://dx.doi.org/10.15376/biores.17.4.6178-6190.
Texte intégralRésumé :
Heartwood color is a complex trait that affects the economic and aesthetic value of the wood but is highly variable. How the color of the heartwood varies spatially and temporally is poorly understood. To illustrate how heartwood color varies within a tree, two opposite aspects of wood within the same tree, representing differential growth rate, were used to model the long-short axis system jointly. The color of the heartwood on the long and the short axis was considered to be two different traits. By jointly modeling the long and short axes, the correlation was examined between aspect (spatial) and contemporaneous correlations (within aspect). Spatial and temporal correlations and their interactions describe the indirect physiological, genetic, and environmental changes in wood formation with time and position in the trunk. Spatial correlations were consistently lower than temporal correlations but were positive and significant. Between the heartwood color parameters, b* showed a relatively higher spatial correlation. The results suggest that there is a spatial correlation in the long-short axis for all color parameters and in the two surfaces. Variations between aspects were not statistically significant for any color parameter. The bivariate mixed model method revealed hidden physics behind heartwood color formation. Models need to be developed to account for both spatial and temporal dependence in studies of wood property change.
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Hussain, Tanveer, Muneeb Musthafa, Masroor Ellahi Babar, Faiz Marikar, Fiaz Hussain, Saeed Akram Khan, Shahid Sherzada et Ahmad Ali. « Genomic Analysis and Comparison of Pakistani Camels (Camelus dromedarius) by Prion Gene ». Acta Scientiae Veterinariae 45, no 1 (13 février 2017) : 8. http://dx.doi.org/10.22456/1679-9216.79378.
Texte intégralRésumé :
Background: In many parts of the Old World, domesticated camels (genus - Camelus) are an essential resource, providing food, labor, commodities, and sport to millions of people Of the three extent species, two have been domesticated (singlehumped dromedarius, Camelus dromedarius, and two humped Bactrian camels Camelus bactrianus) and one remains wild (two-humped wild Bactrian camels Camelus ferus). All three species possess a variety adaptations to harsh desert conditions, including mechanisms to tolerate of extreme temperatures, dehydration, and sandy terrain. People residing in harsh climate zones of the world are being benefitted by raising camels in terms of draft, milk, meat, hides and wool from centuries. There are different breeds of dromedary camels distributed in various parts of Pakistan; however there have been scarcity of research work on camels in Pakistan. Identification of novel link between Camel breeders with fatal neurodegenerative disorders is presence or not can be detect by a Prion gene and it was not carried out in Pakistan soil to date. Prion diseases which are a group of fatal neurodegenerative disorders affect both animals and humans. It is believed that the prions are infectious agents responsible for transmissible spongiform encephalopathies. In this study we report the first study on Prion protein gene in dromedary camels of Pakistan.Material, Methods & Results: Genes are the blueprint of life and determine the functional aspects of cellular mechanisms. Genomic DNA of the enrolled blood samples was extracted using the Nucleospin® DNA extraction kit. Genomic DNA was run on Agarose gel electrophoresis, checked the Genomic DNA quality and amplified using prion region specific primer pair. Prion protein gene was amplified (770 bp) in 35 individuals of seven dromedary camel breeds from the province Balochistan and Punjab of Pakistan. Samples having required fragment size were selected and sent for sequencing through Sanger Sequencing. All the sequences were aligned through multiple sequence alignment and edited using Codon Code aligner and explored for phylogenetic analysis. A portion of 667 bp was finally selected for phylogenetic analysis of dromedary camels from Pakistan with 61 different mammalian species (drawn from GenBank) that revealed five different clades. We found 99.9% nucleotide sequence similarities among Dromedary camels (Germany), Dromedary camels (Iran), and Dromedary camels (Pakistan). We observed deletion in dromedary camels in codon region 66-69 except wild Bactrian camels that might be the causative factor for Prion protein gene resistance in camels. The Neighbor-Joining method with bootstrap analysis of 1000 replicates was used to draw phylogenetic tree.Discussion: This study documents the presence of 14 PrP polymorphisms and shows the relationship between different camel breeds. The deletion had not previously been examined PrP allelic variation, and was found to segregate in these breeds. However, additional data are necessary to demonstrate PrP and genetic approach will be ideal for the future studies and, more investigations are necessary to demonstrate PrP genetic resistance in camels. The utility of these techniques in identifying Prion genes and selecting superior animals and culling the weak animals and making them parents of the next generation that will lead to producing more meat and milk with fewer animals are well discussed and by slaughtering of high Prion incidence will eliminate human animal fatal neurodegenerative disorders.
Thèses sur le sujet "Wool Genetic aspects"
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Kuczek, Elizabeth Salome. « High-glycine/tyrosine keratin genes of wool ». Title page, contents and summary only, 1985. http://web4.library.adelaide.edu.au/theses/09PH/09phk95.pdf.
Texte intégral
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Relf, Bronwyn Lee, University of Western Sydney et School of Science. « Isolation and characterisation of genes expressed in the wool follicle ». THESIS_XXX_SS_Relf_B.xml, 1999. http://handle.uws.edu.au:8081/1959.7/529.
Texte intégralRésumé :
Wool from Merino sheep is an important component of the Australian economy. However, little is known of the mechanisms within the wool follicle that regulate fibre production. The aim of the research described here was to identify and characterise some of the genes expressed in the follicle.A highly expressed gene has been identified from skin and sequenced. The information obtained on this gene suggests that it might be of use in future transgenic studies. Two cDNA libraries were constructed. The first was constructed using small amounts of total RNA from skin and PCR methodology, following a published method. A second cDNA library was then produced from adult mid-flank skin using a commercially available kit. A pool of 420 potential wool follicle specific transcripts were identified from this adult mid-flank skin cDNA library using a combination of differential and subtractive screening. Clone 1-25 was chosen as the focus for the remaining work described in this thesis. Expression of clone 1-25 was detected at all stages of wool follicle development and was localised to the wool follicle bulb, inner root sheath, outer root sheath, epidermis, but not the dermis or dermal papilla. The function of clone 1-25 is as yet unknown. However, from its expression in the wool follicle, and studies by other groups, it appears that it may play a role in inducing differentiationDoctor of Philosophy (PhD) (Biological Sciences)
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Toussaint, Maxime. « Exploitation et exploration de la diversité génétique d’une population naturelle de Streptomyces issue d’un micro-habitat sol ». Thesis, Université de Lorraine, 2018. http://www.theses.fr/2018LORR0027/document.
Texte intégralRésumé :
Les Streptomyces possédent un large arsenal enzymatique ayant des rôles importants dans le sol. Au cours de cette thèse, nous avons exploré leur diversité génétique, fonctionnelle et écologique à partir de collections provenant de sols forestiers. Ainsi, l’exploration du potentiel cellulolytique et la capacité à détecter des sucres libérés lors de l’attaque du bois par des champignons lignivores a permis de créer un biosenseur dont l’exploitation pourrait constituer un nouvel outil normatif pour la détection de la dégradation du bois. Suite à une approche de génomique comparative réalisée entre des isolats sympatriques, nos résultats ont permis de démontrer que des souches phylogénétiquement très apparentées présentaient de grandes différences en termes de présence/absence de gènes, suggérant une vitesse d’évolution rapide du génome accessoire au sein de la population. Ces gènes, souvent associés à des éléments potentiellement transférables, a souligné un rôle important du transfert horizontal pour la diversification de la population. Par une approche d’écologie réverse, la fonction prédite de certains de ces gènes a également pu être corrélée avec un rôle écologique potentiel. Ainsi, l’un des clusters de gènes variables identifié était impliqué dans la production de métabolites secondaires et pourrait constituer un bien commun pour la population. Nos résultats ont confirmé la grande diversité métabolique des Streptomyces (et leur utilité à des fins appliquées), mais indique également qu’une diversification rapide entre souches proches, aurait un rôle écologique important au niveau des populations naturelles de StreptomycesStreptomyces are known to possess a large enzymatic arsenal which can have important roles in the soil. During this thesis, we explored their genetic, functional and ecological diversity using collections from forest soils. Thus, the exploration of their cellulolytic potential and their ability to detect complex sugars released by wood during lignivorous fungi attacks has led to the creation of a biosensor whose exploitation could constitute a new normative tool for the detection of the degradation of wood. Subsequent to comparative genomic approach carried out between sympatric isolates, our results also demonstrated that phylogenetically highly related strains exhibited large differences in the presence / absence of genes, suggesting a rapid rate of evolution of the population accessory genome. These genes, often associated with potentially transferable elements, underlined important role of horizontal transfer for population diversification. Using a reverse ecology approach, the predicted function of some of these genes could also be correlated with a potential ecological role. Thus, one of the variable gene clusters identified by genome analysis was involved in the production of secondary metabolites and would constitute a common good for the population. All of our results confirm the wide metabolic diversity of Streptomyces (and their utility for applied purposes), but also indicates that this diversification would be rapid between nearby strains and would have an important ecological role in the natural populations of Streptomyces
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Kuczek, Elizabeth Salome. « High-glycine/tyrosine keratin genes of wool / Elizabeth Salome Kuczek ». Thesis, 1985. http://hdl.handle.net/2440/19880.
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Sander, Guy 1969. « Isolation and characterisation of ovine homeobox genes in wool follicles / Guy Rex Sander ». 2000. http://hdl.handle.net/2440/22447.
Texte intégralRésumé :
Includes a copy of an article co-authored by the author during the preparation of this thesis.Bibliography: leaves 132-148.
iv, 148 leaves : ill. (some col.); 30 cm.
Title page, contents and abstract only. The complete thesis in print form is available from the University Library.
This thesis describes the screening of the sheep wool follicle for expression of Antennapedia-like homeobox genes by RT-PCR and the isolation and characterisation of the Hoxc-13 gene and a novel hoeobox gene, Barx2.
Thesis (Ph.D.)--Adelaide University, Dept. of Animal Science, 2001
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Asiedu, Robert. « A study of resistance to cereal cyst nematode (`Heterodera avenae Woll.`) located in the rye genome of triticale / by Robert Asiedu ». 1986. http://hdl.handle.net/2440/21224.
Texte intégralRésumé :
Bibliography: leaves 133-152iv, 152 leaves, [47] leaves of plates : ill. (1 col.) ; 30 cm.
Title page, contents and abstract only. The complete thesis in print form is available from the University Library.
Thesis (Ph.D.)--University of Adelaide, 1987
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Asiedu, Robert. « A study of resistance to cereal cyst nematode (`Heterodera avenae Woll.`) located in the rye genome of triticale / by Robert Asiedu ». Thesis, 1986. http://hdl.handle.net/2440/21224.
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Choe, Y. W. (Young Won). « DNA markers for cereal cyst nematode (Heterodera avenae Woll.) resistance gene in barley ». 1995. http://web4.library.adelaide.edu.au/theses/09PH/09phc545.pdf.
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Choe, Y. W. (Young Won). « DNA markers for cereal cyst nematode (Heterodera avenae Woll.) resistance gene in barley / Y.W. Choe ». Thesis, 1995. http://hdl.handle.net/2440/18680.
Texte intégralLivres sur le sujet "Wool Genetic aspects"
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Chelomina, G. N. Lesnye i polevye myshi : Molekuli︠a︡rno-geneticheskie aspekty ėvoli︠u︡t︠s︡ii i sistematiki = Wood and field mice : molecular-genetic aspects of evolution and systematics. Vladivostok : Dalʹnauka, 2005.
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Fordham, Finn. I do, I undo, I redo : The textual genesis of modernist selves in Hopkins, Yeats, Conrad, Forster, Joyce, and Woolf. Oxford : Oxford University Press, 2010.
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I do, I undo, I redo : The textual genesis of modernist selves in Hopkins, Yeats, Conrad, Forster, Joyce, and Woolf. New York : Oxford University Press, 2009.
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Fordham, Finn. I do, I undo, I redo : The textual genesis of modernist selves in Hopkins, Yeats, Conrad, Forster, Joyce, and Woolf. New York : Oxford University Press, 2009.
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Vargas-Hernandez, Jesus. Genetic variation of wood density components in coastal Douglas- fir and their relationships to growth rhythm. 1990.
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Turner, Neil N., Neil N. Turner, Norbert Lameire, David J. Goldsmith, Christopher G. Winearls, Jonathan Himmelfarb et Giuseppe Remuzzi, dir. Oxford Textbook of Clinical Nephrology. Oxford University Press, 2015. http://dx.doi.org/10.1093/med/9780199592548.001.0001.
Texte intégralRésumé :
With expert input from additional section editors William G. Bennett, Jeremy R. Chapman, Adrian Covic, Marc E. De Broe, Vivekanand Jha, Neil Sheerin, Robert Unwin, and Adrian Woolf, the Oxford Textbook of Clinical Nephrology is a three-volume international textbook of nephrology with an unrivalled clinical approach backed up by science. It has been completely rewritten in 365 chapters for its fourth edition to bring it right up to date, make it easier to obtain rapid answers to questions, and to suit delivery in electronic formats as well as in print. This edition offers increased focus on the medical aspects of transplantation, HIV-associated renal disease, and infection and renal disease, alongside entirely new sections on genetic topics and clinical and physiological aspects of fluid/electrolyte and tubular disorders. The emphasis throughout is on marrying advances in scientific research with clinical management. The target audience is primarily the nephrologist in clinical practice and training as well as other healthcare professionals with an interest in renal disease.
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Bilański, Piotr. Trypodendron laeve Eggers w Polsce na tle wybranych aspektów morfologicznych i genetycznych drwalników (Trypodendron spp., Coleoptera, Curculionidae, Scolytinae). Publishing House of the University of Agriculture in Krakow, 2019. http://dx.doi.org/10.15576/978-83-66602-38-0.
Texte intégralRésumé :
In Poland, there are 4 species of the liypodendron genus: T lineaium Oliv., T domestkum L., T signature Fakir. and 7: laeve Egg. Trypodendron laeve is the leastknown of this group. Many factors had influence on the state of research on this species, including taxonomic aspects. Taking into account the unsatisfactory state of knowledge regarding the prevalence of T iaeve in Poland, as well as scarce information on the morphology of this species, research was undertaken to I) document the presence, including new sites, of T laeve in Poland and define, if possible, the habitat and trophic conditions that may affect its occurrence, as well as II) determinate suitability of biometric and genetic methods for correct identification of t laeve against the background of other ambrosia beetle species. Research on the occurrence of T laeve in Poland, was carried out on 143 areas located throughout the country, representing various environmental conditions, primarily such as species composition of tree stands, terrain, altitude (from 16 to 929 meters above sea level) and their location in relation to zoogeographic regions. The research material was obtained mainly using various types of traps for catching ambrosia beetles baited with pheromone. Only in a few cases when attacking the wood of trees, the imagines of ambrosia beetles were obtained without luring agents. The research was conducted in 2007-2016. From the insect individuals identified on the grounds of morphological traits as T lineatum, T laeve, T domesticum and T signatum, originating from selected locations in Poland, 3-11 specimens were collected, for which genetic analyses were performed based on the COI gene fragments obtained by PCR. The research included tests for following paramcter: s sequence similarity, phylogenetic, evolutionary divergence and genetic. structure. As a result of research on the occurrence of ambrosia beetles in Poland, a total of 44207 individuals belonging to four species were collected: T lineatutn, 7: laeve, T domesticum and T signatum, whose share was respectively: 49.2%, 31.4%; 19.1% and 0.3%. In Poland, 1: laeve's imagines were found in 124 out of 143 examined sites. The presence of L reeve has been documented for the first time in 14 zoogeographic regions. This species was commonly found on study areas located from 118 to 929 m above sea level. In Poland the tree species attacked by T Mate include Pinus sylvestris L. and Picea abies (L) H. Karst. In Poland, T laeve as a host plant prefers sylvestris and reaches the highest population densities in the stands of this species. The work presents the exact morphological characteristics of T laeve and indicates the most important features that distinguish it from the other Trypodendrun spp. occurring in Poland. It has also been shown that the best results in the determination of species of the liypodendron genus, regardless of their sex, can be obtained using phylogenetic analysis based on a fragment of the COI gene.
Chapitres de livres sur le sujet "Wool Genetic aspects"
1
Vuolasto, Jaakko, et Kari Smolander. « Genesis of a Wood Harvesting B2B Software Platform ». Dans Agile Processes in Software Engineering and Extreme Programming – Workshops, 106–14. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-88583-0_10.
Texte intégralRésumé :
AbstractDigital platform research has focused mostly on global platforms, where the users of the platform are consumers. Business-to-business (B2B) digital platforms have received less attention. This study observes and provides an early report on a digital platform for forestry, bringing together forest companies, contractors, and forest machine manufacturers. The platform started in Finland, but it has begun to extent its scope to international markets as well. We present some early insights about the birth of the platform and the factors that have contributed to its success in the beginning. We also describe some aspects present in B2B platform governance and related forces. Finally, we provide a preliminary outlook of possible future directions of the platform and its ecosystem.
2
Muscogiuri, Patrizia A. « Coda : ‘You, who cross the Channel’ : Virginia Woolf, Departures and the Spectro-Aesthetics of Modernism ». Dans Cross-Channel Modernisms, sous la direction de Claire Davison, Derek Ryan et Jane Goldman, 215–42. Edinburgh University Press, 2020. http://dx.doi.org/10.3366/edinburgh/9781474441872.003.0014.
Texte intégralRésumé :
In Woolf’s writings, the sea and the marginal space of the coast unexpectedly bring about the apparition of material aspects of history – gunfire, warships, the war departed – remarkably prefiguring the Derridean notion of the spectre as political dead. From aural haunting to vision, a Derridean spectro-aesthetics arises here in the context of a cross-Channel modernism troubled by the carnage and futility of war. Touching on Jacob’s Room (1922), Mrs Dalloway (1925) and To the Lighthouse (1927), in constellation with works by Wilfred Owen, T.S. Eliot, E.M. Forster, Mulk J. Anand, C.R.W. Nevinson, among others, this chapter draws on three cross-Channel essays by Woolf: ‘Heard on the Downs: The Genesis of Myth’ (1916), ‘The Royal Academy’ (1919), ‘To Spain’ (1923). It recontextualises Woolf’s wartime/post-war writings about the Great War, Channel-crossing, sound, hearing, bodies, the visual arts. Woolf’s historical-materialist treatment of the sea merges history with vision in ways departing from, and subverting, the visual rhetoric prescribed by the British War Propaganda Bureau to official war artists. The Channel was used as political barrier during WWI, facilitating state suppression of information whilst pacifist voices were silenced. Woolf’s strategic liminal stance is informed, instead, by a cross-Channel perspective that is historical, political, aesth-ethical.