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Blom, Ivo Leopold. "Pionierswerk Jean Desmet en de vroege Nederlandse filmhandel en bioscoopexploitatie (1907-1916) /." [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2000. http://dare.uva.nl/document/56714.
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Desrut, Antoine. "Mécanismes moléculaires impliqués dans les interactions entre Arabidopsis thaliana et des rhizobactéries bénéfiques : Implication du transport de sucres ?" Thesis, Poitiers, 2019. http://theses.univ-poitiers.fr/63024/2019-Desrut-Antoine-These.
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Les plantes vivent en étroite relation avec des populations complexes de microorganismes, y compris des espèces de rhizobactéries communément appelées rhizobactéries promotrices de la croissance des plantes (PGPR). Les PGPR conférèrent aux plantes une meilleure croissance et tolérance aux stress biotiques et abiotiques mais les mécanismes moléculaires impliqués dans ce processus restent largement inconnus. En utilisant un système expérimental in vitro, la plante modèle Arabidopsis thaliana et la souche PGPR bien caractérisée Pseudomonas simiae WCS417r, nous avons réalisé un ensemble complet d'analyses phénotypiques, d’expressions géniques et biochimiques. Nos résultats montrent que PsWCS417r induit des modifications transcriptionnelles majeures du transport du sucre et d'autres processus biologiques clés liés à la croissance, au développement et à la défense des plantes. En utilisant une approche de génétique inverse, nous avons également démontré que AtSWEET11 et AtSWEET12, deux gènes transporteurs de sucre dont l'expression est réprimée par les souches bactériennes étudiées chez Arabidopsis thaliana, sont fonctionnellement impliqués dans les effets favorisant la croissance et le développement des plantules. Nos résultats révèlent que la régulation du transport de sucres joue un rôle important dans les effets bénéfiques des interactions plantes-rhizobactéries. Nous avons étendu notre étude à deux autres souches de PGPR (Pseudomonas fluorescens PICF7, Burkholderia phytofirmans PsJN) et à une autre souche non-PGPR (Escherichia coli DH5α). Ces trois souches bactériennes sont capables de modifier elles aussi l’expression de plusieurs gènes codant des transporteurs de sucre (essentiellement des gènes des familles AtSWEET et AtERD6-like), soit dans les racines, soit dans les parties aériennes des plantules d’Arabidopsis. Globalement, nos résultats révèlent une régulation transcriptionnelle conservée ou spécifique de certains gènes codants pour des transporteurs de sucres lors des interactions plante-PGPR. Enfin, nous avons effectué l'identification et la caractérisation d'une souche Bacillus megaterium, RmBm31, isolée de nodules racinaires de la légumineuse Retama monosperma. Notre étude révèle que RmBm31 est une bactérie endophyte produisant de l'IAA et possédant un grand nombre de gènes associés à des caractères favorisant la croissance des plantes. En utilisant la plante modèle Arabidopsis, nous avons démontré que cette souche présente des effets bénéfiques sur la croissance et le développement des plantules via la production de composés volatils. Ces effets semblent impliquer des mécanismes de signalisation indépendants de l'auxinePlants live in close relationships with complex populations of microorganisms, including rhizobacteria species commonly referred to as Plant Growth Promoting Rhizobacteria (PGPR). PGPR able to confer to plants an improved productivity but the molecular mechanisms involved in this process remain largely unknown. Using an in vitro experimental system, the model plant Arabidopsis thaliana, and the well characterized PGPR strain Pseudomonas simiae WCS417r, we have carried out a comprehensive set of phenotypic, gene expression, and biochemical analyses. Our results show PsWCS417r induces major transcriptional changes in sugar transport and in other key biological processes linked to plant growth, development and defense. Using a reverse genetic approach, we also demonstrate that AtSWEET11 and AtSWEET12, two sugar transporter genes whose expression is down-regulated by the PGPR, are functionally involved in its plant-growth promoting effects. Altogether, our findings reveal regulation of plant sugar transport plays a crucial role in determining the fate of plant-rhizobacteria interactions. We extended our study to two other PGPR and a non PGPR strain. Overall, our results show that all three bacterial strains tested are able to alter the expression of several plant sugar transporter genes (essentially genes of the AtSWEET and AtERD6-like families), either in roots or in shoot, and either in physical contact with the seedling roots or via the production of volatile compounds only. Altogether, our findings reveal conserved and strain-specific trancriptional regulation of sugar transport during plant-PGPR interactions. Lastly, we report the identification and characterization of a Bacillus megaterium endophytic strain, RmBm31, isolated from root nodules of the legume species Retama monosperma. Our study reveals RmBm31 is an IAA-producing endophytic bacterium that possess a large set of genes associated with plant growth promoting traits. Using the model plant species Arabidopsis, we demonstrate this strain display beneficial effects on plant growth and root development via the production of volatile compounds. These effects seem to involve auxin-independent signaling mechanisms
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Ntshakaza, Pamella. "Host relations of Kalaharituber pfeilii (Henn.) Trappe & Kagan-Zur." Thesis, Rhodes University, 2014. http://hdl.handle.net/10962/d1020888.
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Kalaharituber pfeilii (Henn.) Trappe & Kagan-Zur commonly known as the “Kalahari truffle” is a desert truffle species identified from the Kalahari region of southern Africa. Two other species, Eremiomyces echinulatus (Trappe & Marasas) Trappe & Kagan-Zur and Mattirolomyces austroafricanus (Trappe & Marasas) Trappe & Kovacs are also known to occur in other parts of southern Africa. Truffles are hypogeous fruiting bodies of Ascomycetes, important to humans for their nutritional value and medicinal characteristics. These truffles are known as desert truffles as they prefer to occur under arid or semi-arid conditions characteristic of deserts. Truffle development depends on the presence of a mycorrhizal host, associated microorganisms as well as soil and climatic characteristics. It has been suggested that K. pfeilii has a suspected broad plant host range which includes herbaceous to woody trees and shrubs. However, these relationships have not been verified. Indigenous people of the Kalahari believe that truffles are found under grasses. In the Kalahari, truffle fruiting bodies are often found entangled in Stipagrostis ciliata (Desf.) De Winter var. capensis (Trin. & Rupr.) De Winter roots. S. ciliata, also known as the tall bushman-grass, is the most common grass found in the Kalahari. The objective of this study was to provide conclusive evidence that S. ciliata var. capensis is a host of the Kalahari truffle. Truffle fruiting bodies and grass roots from where the truffles were found were collected from Upington, South Africa. The fruiting bodies were identified by observing their morphological characteristics using the ‘Keys of Truffle genera’. All observed physical properties were similar to those of K. pfeilii and further identification was done using molecular techniques. DNA was extracted from the fruiting bodies, mycelial cultures, rhizosheaths and from the S. ciliata var. capensis grass roots, which were then amplified using the specific K. pfeilii specific primers TPF3 and TPR1 and sequenced. The obtained sequence results confirmed that the collected fruiting bodies were those of the K. pfeilii and the molecular techniques also confirmed that K. pfeilii DNA was present in the S. ciliata var. capensis rhizosheath and root cells. Microscopy showed an ectendomycorrhizal association between K. pfeilii and S. ciliata var. capensis. Mycorrhizal resynthesis experiments were conducted to establish this mycorrhizal association in-vitro. They were unsuccessful because of the structure of the grass and the availability of contaminants. And more...
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Schumaier, Lisa. "DESART." The University of Montana, 2009. http://etd.lib.umt.edu/theses/available/etd-06242009-110708/.
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Harper, Sean Julian. "Desert." Thesis, Rhodes University, 2000. http://hdl.handle.net/10962/d1002840.
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This thesis examines the idea of desert as expounded in the work of John Rawls, and some of the implications of this conception of desert for moral and political philosophy. In this work, I analyse a series of arguments against retaining this particular conception of desert.I argue that none of these arguments sufficiently diminishes the force of Rawls’ argument for desert, while many of them do state, and I argue that they are correct in doing so, that this conception of desert is dangerous for political or moral philosophy to maintain. I argue that the moral, political and legal implications of accepting this account of desert severely undermine various institutions of differential treatment, and indeed, moral assessment. I regard it as obvious that societies must, on occasion, treat members of those societies differently, for moral, as well as practical reasons. The Rawlsian account of desert, and the account of responsibility on which it rests, however, will endanger the legitimacy of such procedures. I argue further that the Rawlsian account of desert requires that differences in wealth, and inheritance of wealth, influence and privilege be diminished, if not abolished, if we are to talk of any form of desert meaningfully. I argue that this is a strength of Rawls’ account, and further that any account of desert that is true to the philosophical tradition of the concept will require similar steps to be taken. The primary aim of this thesis is to show that Rawls’ arguments against desert are serious ones, both in terms of strength and scope, and that they must be addressed. I intend to show that these arguments are founded on strong moral intuitions, and that it is plausible that these intuitions may need revision. Finally,I intend to show that desert is an important moral and political concept, and that the disciplines of moral and political philosophy will be impoverished by the absence this concept. This absence, I will argue, is a natural consequence of the acceptance of the Rawlsian arguments.
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Kostareva, Anna. "Genetic and pathophysiological study of desmin derangements in cardiac disorders /." Stockholm : Karolinska institutet, 2007. http://diss.kib.ki.se/2007/978-91-7357-294-1/.
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Tyfield, David. "Desert rain." Master's thesis, University of Cape Town, 2012. http://hdl.handle.net/11427/12298.
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Pledge-Amaral, Carolyn D. "Desert Palms." FIU Digital Commons, 2016. http://digitalcommons.fiu.edu/etd/2977.
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DESERT PALMS is a contemporary women’s novel set in an Arizona RV park. When Miamians Margie Campos and her husband, Carlos, unexpectantly inherit Desert Palms, a rundown retirement community, Margie reluctantly agrees to stay in Arizona to overhaul the park. With the discovery of a secret letter that threatens to unravel the family, an unscrupulous broker determined to buy the park on the cheap, and a husband bent on hitting it big, Margie digs in and starts to find purpose amidst a desert microcosm.
Told from Margie’s perspective in a closely attached third person, DESERT PALMS is a realistic and humorous narrative that falls somewhere between the style of Liane Moriarty in, “The Husband’s Secret” and Anne Tyler in her novel, “Back When We Were Grownups.” DESERT PALMS offers an offbeat cast of central characters who help Margie gain a deeper understanding of herself and what makes life worth living.
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Van, Brunt Jim. "Vegetative habitat analysis of proposed mine sites in the Mojave Desert: The first step towards revegetation of disturbed desert communities." CSUSB ScholarWorks, 1993. https://scholarworks.lib.csusb.edu/etd-project/663.
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Nugroho, Laurentius Hartanto. "Hyperhydricity of in vitro cultured Sturt's desert pea (Swainsona formosa) and techniques for its minimisation." Title page, contents and summary only, 1995. http://web4.library.adelaide.edu.au/theses/09A/09an968.pdf.
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Bibliography: leaves 74-80. This study shows techniques for reducing hyperhydricity in the micropropagation of Sturt's desert pea. The effects of support matrix, tube closure and cytokinin regime are examined and the anatomy of hyperhydric shoots is investigated.
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Olstad, Tyra A. "Desert dimensions attachment to a place of space /." Laramie, Wyo. : University of Wyoming, 2007. http://proquest.umi.com/pqdweb?did=1313912621&sid=1&Fmt=2&clientId=18949&RQT=309&VName=PQD.
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Gundlach, David L. "Analysis of patch shape and area in desert tortoise habitat." abstract and full text PDF (free order & download UNR users only), 2008. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1456426.
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Boqvist, Mary. "Psykologiska operationer : utvecklingen efter operation Desert Shield/Desert Storm." Thesis, Swedish National Defence College, Swedish National Defence College, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:fhs:diva-118.
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Genom massmedierna kan hela samhällen bli influerade. Med tanke på medieteknikutvecklingen så har det varit intressant att ta reda på om medietekniken har bidragit till utvecklingen av psyops användande. Med medieperspektivet som bakgrund har uppsatsen svarat på om det första informationskriget, Operation Desert Shield/Desert Storm, har följts upp med ännu mer användande av psyops.
Med slutsatser så som att psyops har fått en mer framträdande roll i krigföringen och att förändringarna kan härledas till medieteknikutvecklingen kan också frågeställningen besvaras.
Slutsatsen är att Operation Desert Shield/Desert Storm har följts upp med ännu mer användande av psyops. Med medietekniken som bakgrund är denna en av anledningarna till att psyops utvecklats men också vice versa.
För att besvara dessa frågor har en faktainhämtning gjorts på området för att sedan kunna jämföra de olika operationernas mål, medel och metoder.
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Chavez, Margeaux Alana. "Desert in the Springs: Ethnography of a Food Desert." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4807.
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"Food desert" commonly describes food insecure areas with few fresh food outlets. Though used in a number of sources, the definition of "food desert" remains largely undeveloped and research is often deficit oriented, failing to account for community assets that may exist within food deserts but are underutilized or under-supported. Using an assets-based, ethnographic approach, this study combines GIS and survey methodology with participant observation and qualitative interviews to assess the potential positive effect of urban agriculture on food accessibility in Sulphur Springs, a USDA identified urban food desert in Tampa, Florida.
Ethnographic data suggest that within this neighborhood, residents are largely dissatisfied with the quality of goods and services provided by local food retailers and, in response, seek alternatives to local retail food options. GIS and food store survey results from this study suggest that urban agriculture has the potential to increase fresh food accessibility and availability. Qualitative interview data suggest that the most appropriate way to improve food accessibility in this particular community is through Community Supported Agriculture that fosters social connections, while increasing access to healthful, quality foods, and circulating money within the community.
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Niazi, Yunus. "Stabilisation of desert sand with desert clay plus lime, and cement kiln dust in desert road construction." Thesis, University of Birmingham, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.625466.
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Emmerson, Louise M. "Persistence mechanisms of Erodiophyllum elderi, an arid land daisy with a patchy distribution /." Title page, abstract and contents only, 1999. http://web4.library.adelaide.edu.au/theses/09PH/09phe54.pdf.
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Floyd, Don. "The Desert Oasis." College of Agriculture, University of Arizona (Tucson, AZ), 1987. http://hdl.handle.net/10150/295551.
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Groen, Jean, and Don Wells. "Desert Plant Food." University of Arizona (Tucson, AZ), 2010. http://hdl.handle.net/10150/556695.
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Coppenger, Brett Andrew. "Achieving epistemic descent." Diss., University of Iowa, 2012. https://ir.uiowa.edu/etd/3279.
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Traditional accounts of justification can be characterized as trying to analyze justification in such a way that having a justified belief brings with it assurance of truth. The internalist offers a demanding requirement on justification: one's having a justified belief requires that one see what the belief has going for it. Externalists worry that the internalist's narrow conception of justification will lead to unacceptably radical and implausible skepticism. According to the externalist, one need not know what a belief has going for it in order for that belief to be justified. Externalism, though, comes with its own problems.
Ernest Sosa has attempted to bridge the divide between internalism and externalism by pairing the strengths of internalism (assurance) with the strengths of externalism (an answer to skepticism). Sosa distinguishes two kinds of knowledge: animal knowledge that is essentially externalist in character and reflective knowledge that is intended to capture our best intellectual procedure in regards to knowledge. On Sosa's view, one gains reflective knowledge by building upon (by adding further epistemic components to) animal knowledge. As a result, Sosa's view seems to illustrate a bottom-up approach to the analysis of knowledge (or justification): reflective knowledge is the result of animal knowledge and some other epistemic factor.
My project, in contrast to Sosa's, is to argue that one should start with an account of ideal justification (justification that is paradigmatically internalist) and then proceed by loosening the standards on ideal justification in an effort to develop the possibility of non- ideal kinds of justification. The view that I will develop will adopt Sosa's strategy of distinguishing kinds of knowledge (or justification), but will result in a top-down approach to the analysis of justification. Instead of starting with an undemanding standard and layer levels on top, I will start with an ideal standard and strip layers away.
I will also argue that my view has some important advantages over Sosa's. Not only does Sosa's view seem to run into many of the problems that threaten externalism, but his view is incapable of offering the kind of assurance that the internalist is after. The view I develop will maintain the internalist's interest in assurance while also providing a response to some of the skeptical problems that have plagued internalists.
If my project is successful, then, even if the justification that results in many of the cases I will be exploring is (admittedly) not ideal, we can use these conceptions of justification to help explicate how one might have justified beliefs about a great number of things. The essentially internalist account that I have offered will not only illustrate a serious approach to dealing with skepticism, but it will also capture how many of our commonsensically justified beliefs are in fact justified (albeit in a less than ideal sense).
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Celello, Peter. "Desert in Context." Bowling Green State University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1237731956.
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Xiong, Xuehan. "Supervised Descent Method." Research Showcase @ CMU, 2015. http://repository.cmu.edu/dissertations/652.
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In this dissertation, we focus on solving Nonlinear Least Squares problems using a supervised approach. In particular, we developed a Supervised Descent Method (SDM), performed thorough theoretical analysis, and demonstrated its effectiveness on optimizing analytic functions, and four other real-world applications: Inverse Kinematics, Rigid Tracking, Face Alignment (frontal and multi-view), and 3D Object Pose Estimation. In Rigid Tracking, SDM was able to take advantage of more robust features, such as, HoG and SIFT. Those non-differentiable image features were out of consideration of previous work because they relied on gradient-based methods for optimization. In Inverse Kinematics where we minimize a non-convex function, SDM achieved significantly better convergence than gradient-based approaches. In Face Alignment, SDM achieved state-of-the-arts results. Moreover, it was extremely computationally efficient, which makes it applicable for many mobile applications. In addition, we provided a unified view of several popular methods including SDM on sequential prediction, and reformulated them as a sequence of function compositions. Finally, we suggested some future research directions on SDM and sequential prediction.
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Hildreth, Jane N. "Investigation of lower Colorado River Valley desert soil mineral and nutrient content in relation to plant proximity and identity." CSUSB ScholarWorks, 1989. https://scholarworks.lib.csusb.edu/etd-project/518.
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Moore, Daryce Lianne. "Total Force : the reserve recall process and Desert Shield/Desert Storm." Thesis, Monterey, California. Naval Postgraduate School, 1991. http://hdl.handle.net/10945/26811.
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The purpose of this thesis is to examine the Desert Shield/Desert Storm reserve recall process in the context of the past and future of the Total Force Plan. The thesis provides an overveiw of the evolution of the Total Force Plan since its inception in 1973. It then takes a case analysis approach to describing the events of the Desert Shield/Desert Storm recall. The focus is on the systemic obstacles faced by the implementers of the recall process. Most notably, it finds that the focus of existing plans on mobilization rather than recall, and the incompatibility of the reserve and active personnel information systems complicated the recall process. It further looks at the requirements of horizontal integration and means of engendering a more active partnership between active and reserve components. Finally, it provides recommendations for developing a system of graduated personnel conditions related to contingency planning, in order to enhance the integration of reserve assets when needed
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Hinkley, Brian E. "Costs of Operation Desert Shield/Desert Storm : a burden sharing perspective." Thesis, Monterey, California. Naval Postgraduate School, 1991. http://hdl.handle.net/10945/28084.
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Johnson, J. Andrew. "Cost estimates for Operation Desert Shield/Desert Storm: a budgetary analysis." Thesis, Monterey, California. Naval Postgraduate School, 1991. http://hdl.handle.net/10945/43740.
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Operation Desert Shield/Desert Storm (DS/DS) presented unique challenges for estimating the cost of that conflict. This analysis reviews the cost estimates and methodologies developed for that purpose by DoD, CBO and GAO. It considers the budget climate and the role of foreign cash and in-kind contributions. Finally, it reviews the budgeting innovations used to provide and monitor DS/DS defense spending. At the outset of the crisis, costs were estimated to determine the defense funding requirements for DS/DS. Because of the specific provisions of the Budget Enforcement Act of 1990, these estimates focused on the incremental impact on DoD's budget. This was difficult because incremental costs were not defined and DoD's accounting structure does not measure incremental costs. As allied financial support for U.S. defense expenditures increased, cost estimates were also used to measure the relative contributions of donor countries. This led to debates over the proper definition of incremental costs. Comparing the DS/DS cost estimates and the foreign cash and in-kind contributions, it appears that foreign contributions will cover DoD's incremental budgetary costs, but not the total incremental costs of the war.
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Farnsworth, John Seibert. "What does the desert say? : a rhetorical analysis of desert solitaire /." May be available electronically:, 2007. http://proquest.umi.com/login?COPT=REJTPTU1MTUmSU5UPTAmVkVSPTI=&clientId=12498.
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Pantastico, Marissa Capistrano. "Competition in desert winter annuals: Effects of spatial and temporal variation." Diss., The University of Arizona, 1991. http://hdl.handle.net/10150/185362.
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Removal experiments were conducted to determine particular spatial and temporal conditions that can influence competitive interactions in several desert winter annual species. During the 1987-88 season, variation in the magnitude of competition at three habitats along a topographic gradient was demonstrated in two co-occurring species of winter annuals, Plantago patagonica and Pectocarya recurvata. Density effects on the survival and reproductive success of either species were weakest at the slope. However, the habitats where the two species experienced the most intense competition differed. Plantago was most affected by competition at the wash while Pectocarya was most affected at the base of the hill. The most striking pattern observed was that, for both species, the habitat with the highest reproductive success for plants that were not experiencing competition tended to be the worst habitat for plants in competition. A comparison of results from two experiments performed on Plantago patagonica during two growing seasons showed that competition occurred despite large seasonal differences in weather and plant performance. When wet and dry conditions of different year types were simulated by artificial irrigation during a dry season, competition was still detected in both rainfed and irrigated plants regardless of the marked differences in plant size as a result of the irrigation treatment. A neighborhood density roughly equivalent to 8 plants/dm² appeared sufficient to create competitive conditions for Plantago. Effects of competition were consistently manifested in reduced plant growth and fecundity. There was no evidence for density-dependent seedling mortality (self-thinning) even with seedling densities as high as 48 plants/dm². In two pairs of species tested, Plantago patagonica-Schismus barbatus and Plantago patagonica-Pectorcarya recurvata, there was no statistically detectable effect of neighbor species identity on target plants of Plantago and Pectocarya suggesting the possible equivalence of competitive effects in these species of desert winter annuals.
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Hoyt, Cathryn A. "Grassland to desert : Holocene vegetation and climate change in the northern Chihuahuan Desert /." Digital version:, 2000. http://wwwlib.umi.com/cr/utexas/fullcit?p9992819.
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Harmon, Courtney Michelle. "Desert pavement morphology and dynamics, Big Bend National Park, Texas." Thesis, [College Station, Tex. : Texas A&M University, 2006. http://hdl.handle.net/1969.1/ETD-TAMU-1125.
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Williams, Clint. "A review of the Kalahari group: an aid to Kimberlite exploration in this medium." Thesis, Rhodes University, 2003. http://hdl.handle.net/10962/d1003216.
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The Kalahari Group sediments cover vast portions of the Archean Kaapvaal and Congo cratons that are considered highly prospective for economic kimberlites. In southern Africa, the term Kalahari refers to a structural basin, a group of Cretaceous to recent terrestrial continental sediments and an ill-defined desert, all of which have been grouped together as the Mega Kalahari by Thomas and Shaw (1993). The Mega Kalahari grouping includes sediments stretching from South Africa in the south to the Democratic Republic of Congo in the north, and from eastern Namibia to western Zimbabwe. This sand sea, at 2.5 million km², is the largest on earth and presents significant obstacles and challenges to the kimberlite explorationist attempting to locate bedrock-hosted diamondiferous kimberlite bodies. The Mega Kalahari sediments represent an ancient depositional environment with a complex history in which the stratigraphy and age of the deposits are not particularly well constrained or understood. Low fossil content, limited exposure, poor differentiation of the dominant surficial Kalahari Sand and a limited comprehension of an extensive duricrust suite has delayed the understanding of the sedimentological and environmental history of the basin. This sequence of sediments has accumulated and evolved through fluvio-deltaic, aeolian and groundwater processes, with characteristics due to primary deposition and subsequent modification being difficult to distinguish. Deposition in the Kalahari Basin has been subject to tectonic influences, changes in drainage directions and source areas of sediments, river capture and numerous large and small climatic fluctuations both in the basin and surrounding areas. It bears the imprint of recurring cycles during which the same sediments were reworked, sometimes by different agencies, all of which exacerbate attempts to correlate sedimentary units across the sequence. The Mega Kalahari is a series of contiguous Phanerozoic sedimentary basins situated within the African Superswell. The Superswell has dominated the gross geomorphology of southern Africa and contributed significantly to the present character of the Mega Kalahari and the evolution of the drainage systems. Overall, the tectonic framework established in southern Africa by the division of Gondwanaland led to the creation of a dual drainage system, with the hingeline acting as a watershed between a coastally-orientated exoreic system and an endoreic system draining into the interior. Deposition of sediments started in the late Cretaceous. Neo-tectonic activity expressed in the rifting in central Botswana, further influenced sedimentation rates and exerted a strong control over paleo-drainage directions. This revIew presents the complexities of the Kalahari cover sequence. The most Important geomorphological and sedimentary factors to be considered when designing and implementing kimberlite exploration programs within the Mega Kalahari environment are outlined and discussed. New data from exploration drilling programs are presented on the thickness of the Kalahari within portions of northern Namibia, western Zambia and Botswana.KMBT_363
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Wenzel, Karin, Sigurd Schienbein, Peter Posse, and Wolfgang von Hoyningen-Huene. "Optische Eigenschaften von Wüstenaerosol." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-212827.
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Durch Messungen von spektraler optischer Dicke, Sonnenaureole und Himmelshelligkeit in Kombination mit den Programmen CIRATRA und BILANZ werden die optischen Eigenschaften von Sahara-Wüstenaerosol und dessen klimatische Wirkung unter Berücksichtigung der Nichtsphärizität der Aerosolpartikel untersuchtBy combining measurements of spectral optical thickness, solar aureole and sky brightness with the programs CIRATRA and BILANZ the optical porperties of Saharan desert aerosol and its climatic effects are investigated, including a consideration of the Nonsphericity of the aerosol particles
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Mowbray, Leslie Allen. "Quaternary Chronology and Stratigraphy of Mickey Springs, Oregon." PDXScholar, 2015. https://pdxscholar.library.pdx.edu/open_access_etds/2637.
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Mickey Springs in the Alvord Desert, southeast Oregon, is analogous to other Basin and Range hydrothermal systems where the requisite conditions of heat source and permeable pathways are met through crustal thinning due to normal faulting. This study examines the morphology and lifespan of near-surface spring features through use of ground penetrating radar, thermoluminescence (TL) dating, and elevation modeling. Duration of hydrothermal activity at Mickey Springs has not previously been determined, and age determinations of sinter at the site are conflicting. The reason for and timing of this change in silica saturation in the hydrothermal fluid has not been resolved.
Three morphologies of silica sinter deposition have been identified at Mickey Springs. These are (1) well-sorted, fine-grained sandstone with ripple marks, cross beds and preserved root casts, to poorly-sorted conglomerate of primarily basalt clasts, both cemented by coeval silica deposition, (2) large depressions (12-32 m diameter) rimmed with sinter, characterized by fine silt and clay blanketing a sinter apron and infilling the central depression, and (3) quaquaversal sinter mounds identified by outcropping pool-edge sinter typically surrounding a shallow depression of loose sediment.
Silica-cemented sandstone and conglomerate were the first features formed by coeval hydrothermal processes at the site, and were emplaced prior to 30 kya as suggested by structural and stratigraphic relationships. Structure between two interacting fault tips may have constrained the extent of silica cementation. By 30 kya, a left-stepping fault oriented roughly north/south further constrained the near-surface permeable zone. TL dates from sediment stratigraphically below and above sinter aprons around mounds and depressions (former spring vents) indicate sinter deposition between 30 and 20 kya. Location of these features was dictated by development of the left-stepping fault. As pluvial Lake Alvord filled at the end of the Pleistocene, lake sediment filled most vents, which were largely inactive, with fine-grained silt and clay.
Today, hydrothermal activity persists in two modes: (1) The current high-temperature springs, steam vents and mudpots concentrated in a 50 x 50 m area south of the sinter mounds and depressions, and (2) scattered springs and steam vents that exploit previous permeable pathways that once provided the hydrothermal fluid which precipitated the sinter aprons. Currently there is no active silica sinter deposition at Mickey Springs.
Structures and stratigraphic relationships identified through this study favor a transport-limited and structurally controlled model of fluid transport. Sinter deposition is determined to have occurred before the most recent highstand of pluvial Lake Alvord. A climate driven model, where groundwater recharge from pluvial Lake Alvord circulates to a deep heat source and enhances spring discharge, is not supported by these findings, as no evidence was found for sinter precipitation after the drying of the lake. Future studies of other hydrothermal systems in the Basin and Range may reveal that permeable pathways along local structures are the primary drivers in this region.
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Jestadt, Jason T. "Desert places : for orchestra." Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=32833.
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Desert Places is a composition for large orchestra with a duration of approximately 12 minutes. Inspired by the Robert Frost poem "Desert Places", the work is primarily concerned with "covering up" one type of musical material with another. Specifically, the work contains a large-scale "cross-fading" of two types of motivic material, and two types of harmonic material. While the processes at work remain clearly defined, the musical materials move smoothly and gradually through the piece, exchanging foreground and background positions, and blurring the divisions of sections.
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Funk, Jonathon. "Descent for cocomplete categories." Thesis, McGill University, 1990. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=74666.
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This thesis investigates descent for the 2-fibration of cocomplete categories over toposes and geometric morphisms. Change of base within this 2-fibration is given by the left adjoint to the restriction functor. Pitts' pullback theorem (Pi) is important to descent in this context, and a new and more natural proof of it is obtained. As in (Pi), the proof herein depends on Pare's (P2) results on generated topologies. The present context is 2-categorical, and an abstract 2-descent theorem is obtained. Its first use is to show that a geometric morphism which is of effective descent for cocomplete categories remains so for toposes.Studying toposes as cocomplete categories is analogous to studying locales as sup-lattices. Pure geometric morphisms are introduced in terms of the cocontinuous dual of a cocomplete category. They are shown to be of effective descent for cocomplete categories. Hence, a new proof of Moerdijk's (M5) version of a classification theorem for toposes originally due to Bunge (B4) is obtained.
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Maurer, Michael, and Lucy Bradley. "Low Desert Citrus Varieties." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 1998. http://hdl.handle.net/10150/144811.
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6 pp.When choosing a variety of citrus to plant in your yard consider: what you like to eat; when you want to harvest; and how cold it gets in your yard. There are many varieties of species of citrus, each with its own characteristics. This publication lists the characteristics of some of the most popular varieties of citrus.
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Kim, Jung-Wook. "Christopher in the Desert." Diss., The University of Arizona, 1999. http://hdl.handle.net/10150/252895.
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The title of this composition "Christopher in the Desert" was stipulated after the nickname of the student residence of the University of Arizona, "Christopher City," where I have stayed during my study at the school. It also represents the geographical environments of the city of Tucson, Arizona. The orchestration for this composition is considerably conventional which is consist of paired winds with solo English horn and tuba, five part strings, and timpani. Frequently, solos and solo ensembles are employed intentionally to build a differentiated atmosphere from the forceful orchestra, The characteristically effective instrumentation of Claude Debussy (1862--1918), and Bela Bartok's (1881--1945) interest informal dimensions and developmental procedures of his own compositional style influenced this work. To organize this three movement composition in a symmetrical attitude, the first and third movement share several common components, especially pitch layouts, while the second movement keeps the most independent and distinctive flowing demeanor. The pitch materials interact both in horizontal and vertical orientations, and the directions and contours of the melodic lines are cautiously controlled to develop and extend the possibilities in the circumstance of unity of the entire piece. Harmonically, quintal and quartal chords are frequently employed in several points to slacken the tensions which have been built, while pentatonic scale-oriented harmonies dominate the harmonic realms of the composition.
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Edwards, Taylor. "Desert tortoise conservation genetics." Thesis, The University of Arizona, 2003. http://hdl.handle.net/10150/291566.
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Managing for the long-term survival of a species requires an understanding of its population genetics. The desert tortoise, Gopherus agassizii, inhabits the Mojave and Sonoran deserts of North America. Desert tortoises face many threats to their continued survival, including habitat loss and fragmentation. I used mitochondrial and microsatellite DNA markers to examine genetic structure within and among populations of desert tortoises. I found that both the Mojave and Sonoran populations of desert tortoise exhibit similar patterns of population genetic structure. Gene flow among localities within each region is part of the evolutionary history of the desert tortoise and dispersal events probably play an important role in the long-term maintenance of populations. Movement barriers caused by anthropogenic landscape changes have the potential to effect desert tortoise population viability. Understanding the historical connectivity between and within the Mojave and Sonoran populations of desert tortoises will help facilitate the conservation of this species.
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McGinnies, William G. "What is a Desert?" University of Arizona (Tucson, AZ), 1985. http://hdl.handle.net/10150/552256.
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Newell, Alan C., Patrick D. Shipman, and Todd J. Cooke. "Patterns on Desert Plants." University of Arizona (Tucson, AZ), 2012. http://hdl.handle.net/10150/556802.
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The patterns seen in both the phyllotaxis and surface morphologies in the vicinity of the shoot apical meristems of plants are discussed. We begin with many pictures and a narrative descriptive of both the universal and anomalous features of desert and other plants. We then briefly outline explanations and open challenges. Although many of the special features of phyllotaxis have been known for over four centuries, only now are mechanistic explanations beginning to emerge.
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Song, Lisa. "Drinking up the desert." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/54573.
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Thesis (S.M. in Science Writing)--Massachusetts Institute of Technology, Dept. of Humanities, Graduate Program in Science Writing, 2009.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 43-47).
As one of the fastest-growing cities in America, Tucson, Arizona suffers from a classic case of urban sprawl. Fueled by the prevalence of lot splits and cheap suburban land, little was done to curb the city's unsustainable growth until 1998, when the discovery of endangered pygmy owls in Tucson sparked the creation of the Sonoran Desert Conservation Plan. The plan aims to preserve biodiversity in Tucson and surrounding Pima County by limiting development in biologically sensitive areas of the desert. In addition, Pima County is applying for a county-wide Section 10 Permit from US Fish & Wildlife Service. Water is another limiting factor in the city's growth. When Tucson overdrafted its groundwater resources, the city bought additional water from the Colorado River, which was channeled to Tucson through the Central Arizona Project. Due to infrastructure problems, initial delivery of canal water in 1992 was shut down in 1994. Tucson Water, the city's main water utility, later turned to recharge and recovery as a way to treat river water. Even with the addition of river water, Tucson, like other cities in the American Southwest, continues to search for new water sources for its ever-growing population.
by Lisa Song.
S.M.in Science Writing
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Kamath, Vignesh Kasargod. "Oasis in the Desert." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/72276.
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Downtown districts of cities are usually the first areas to be developed and can inform one of how and why growth occurred in a particular instance. Las Vegas, an oasis within the Mojave desert, originated due to its strategic location in the Southwest US that provided spring water for westward travelers.
The area currently known as downtown Las Vegas, one of the first areas to be developed, is depressed due to economic downturn. An arts district is emerging in this district. However, its growth is hampered by a lack of foot traffic and local activity.
University of Nevada - Las Vegas (UNLV) is in need of a new building for the arts department to accommodate its expanding program.
The purpose of my thesis is to propose a satellite campus in Downtown Las Vegas that can house an arts building along with workshops and art galleries. The goal is to stimulate the development of the downtown arts district by developing strong interaction between the students and local arts activity.Master of Architecture
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Oh, Byung-Sun. "Teleological desert and justice." Thesis, University of Edinburgh, 1991. http://hdl.handle.net/1842/20073.
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In this thesis I have tried to establish a theory of justice which would be plausible and acceptable in contemporary Korean society. The basic idea of justice I espouse is based on the notion of teleological desert. This is a liberal-communitarian conception of justice which is a amalgam between liberal individualism and traditional communitarian values. I have argued that the achievement of this kind of synthesis between two seemingly inconsistent and incompatible principles can be made possible only through the approach of a liberal perfectionist virtue ethics: for each member of society to become a more excellent human being in an autonomous way is a most viable way of realizing justice not only in personal relations but also in society at large. In order to nurture perfectionist virtue I have advocated a creative reconstruction of traditional Confucian ethics in a way that can suit any contemporary industrialized and capitalist society. The essential elements worth drawing from traditional Confucian philosophy seem to be a kind of work-ethic that stresses self-fulfilment and human perfection through hard work and the nurturing of virtue, rendering a person due reward and punishment according to his or her desert, and the priority of righteousness and harmonious common good over social utility understood in purely hedonists terms. However, I have put equal stress on the right to individual autonomy and self-determination which is an essential element to establish and identify a person's desert and responsibility. The notions of human dignity and worth and the individual right to freedom and equality which were transplanted to the East from the West have under rigorous pressure taken root in the Korean political culture as can be seen in the Korean constitutional history of the recent past. I suppose that the protection of the individual right to autonomy and privacy is an inviolable principle in Korean political morality. I believe that the theory of justice I have espoused in this thesis which comprises the three principles of desert, needs, and legal rights may find its justification in the prevailing political morality of the great majority of contemporary Korean people. Although the principle of justice is eesential and pivotal to building and maintaining a good society, it should not be regarded as an absolutely superior or all-encompassing notion to be applied to resolve any social issues. The principle of utility has a complementary or auxiliary part to play, and sometimes qualifies justice in a way which is necessary for securing the common good.
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Ahluwalia, Arvind. "Computer Controlled Direct Descent." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-36214.
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How an aircraft performs its approach and descent towards an airport today has got big potential for improvements. It's mainly the environmental impact and safety that can, and must, be improved for a sustainable future in aviation. "Green Approaches" is a small, yet relatively well-known, optimized approach system mainly used by Scandinavian Airlines on Arlanda airport. Unfortunately "Green Approaches" aren't used often enough, due to the simple reason that it doesn't work very well during heavy traffic. Luckily further research is being done in this field to further optimize an aircraft’s approach. As of today, the most forward going research is being done by the FAA and NASA, and their new system is called NextGen OPD. The system is not fully developed yet but their goals are, as previously mentioned, to optimize today's aircraft approach. In this report the focus will also be set on improving aircraft approaches, although not by optimizing today’s system like the FAA and NASA. Instead, a whole new concept of how aircraft approach airports will be developed. The reason that a brand new concept will be developed is simple, optimizing today's aging system will not be sustainable for the future. Also, optimizing an aging system has its limits. By designing a whole new concept, a steady ground will be laid and it shall be sustainable for the coming century's technology. The new concept will be called ”C.C.D.D.”, Computer Controlled Direct Descent, and will have a lot of goals and expectations to fulfill. As hinted in the name, the new concept is built on the idea that a computer will be controlling the whole approach, and therefore the "Human factor" will more or less be eliminated. Although the main purpose of a new approach system is to decrease the negative environmental impact, by decreasing the fuel consumption during the approach. The new concept will also decrease the noise an aircraft makes during the descent and increase the possibility for a greater traffic flow in the airport’s airspace. The end result will be a "win-win" for everyone involved. An environmentally friendly aircraft approach is necessary for a sustainable future in aviation. C.C.D.D. is a system that will pay for itself with time, because of the decreased fuel consumption for airliners. The system also has the ability to be expanded to computer control departing aircrafts, due to the systems highly computerized structure and integration with airplanes autopilot.
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Myles, Timothy G., and Bradley F. Binder. "The Desert Marigold Moth." University of Arizona (Tucson, AZ), 1990. http://hdl.handle.net/10150/609120.
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The moth Schinia miniana (Grote) of Lepidoptera family Noctuidae is reported on Desert Marigold (Baileya multiradiata) of plant family Compositae. Characteristics of the plant and the life history of the insect are discussed. Principal features of this plant-insect interaction are described and illustrated.
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Calderone, Gary Jude. "Paleomagnetism of Miocene volcanic rocks in the Mojave-Sonora desert region, Arizona and California." Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/184554.
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Paleomagnetic directions have been obtained from 190 Middle Miocene (12-20 Ma) mafic volcanic flows in 16 mountain ranges in the Mojave-Sonora desert region of western Arizona and southeastern California. These flows generally postdate Early Miocene tectonic deformation accommodated by low-angle normal faults but predate high-angle normal faulting in the region. After detailed magnetic cleaning experiments, 179 flows yielded characteristic thermal remanent magnetism (TRM) directions. Because of the episodic nature of basaltic volcanism in this region, the 179 flows yield only 65 time-distinct virtual geomagnetic poles (VGPs). The angular dispersion of the VGPs is consistent with the angular dispersion expected for a data set that has adequately averaged geomagnetic secular variation. The paleomagnetic pole calculated from the 65 cooling unit VGPs is located at 85.5°N, 108.9°E within a 4.4° circle of 95% confidence. This pole is statistically indistinguishable (at 95% confidence) from reference poles calculated from similar-age rocks in stable North America and from a paleomagnetic pole calculated from similar-age rocks in Baja and southern California. From the coincidence of paleomagnetic poles from the Mojave-Sonora and adjacent areas, we can conclude that: (1) vertical-axis tectonic rotations have not accompanied high-angle normal faulting in this region; (2) there has been no latitudinal transport of the region since 12-20 Ma; and (3) long-term nondipole components of the Miocene geomagnetic field probably were no larger than those of the recent (0-5 Ma) geomagnetic field. In contrast, paleomagnetic data of other workers indicate vertical-axis rotations of similar-age rocks in the Transverse Ranges, the Eastern Transverse Ranges, and the Mojave Block. We speculate that a major discontinuity in the vicinity of the southeastward projection of the Death Valley Fault Zone separates western areas affected by vertical-axis rotations from eastern areas that have not experienced such rotations.
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Sainz, de la Maza Eider. "Desde dentro, desde fuera dos narradoras vascas contemporáneas /." [Gainesville, Fla.] : University of Florida, 2005. http://purl.fcla.edu/fcla/etd/UFE0011682.
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Alcala, Galvan Carlos Hugo. "Response of Desert Mule Deer to Habitat Alterations in the Lower Sonoran Desert." Diss., Tucson, Arizona : University of Arizona, 2005. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu%5Fetd%5F1424%5F1%5Fm.pdf&type=application/pdf.
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Dimmitt, Mark A. "The Hybrid Palo Verde 'Desert Museum': A New, Superior Tree for Desert Landscapes." University of Arizona (Tucson, AZ), 1987. http://hdl.handle.net/10150/554229.
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A recently released complex hybrid palo verde is described which exhibits the best phenotypic traits of the three species in its parentage. 'Desert Museum' has inherited from Parkinsonia aculeata very rapid growth (up to 2.7 meters, nine feet, per year), sturdy, upright growth habit, and large, bright flowers borne over a long season. From Cercidium spp. it has inherited small leaves. Unlike any species of palo verde, the hybrid is completely unarmed. Preliminary evaluation indicates that 'Desert Museum' is a nearly ideal tree for cultivation in desert climates. It grows to a functional size of seven meters (20 feet) tall and wide in three to five years, after which time it can be maintained on little or no supplemental water. Its growth habit requires little or no pruning or staking. The litter from the small leaves is inconspicuous and readily blows away or decomposes. The tree is apparently resistant to indigenous pests and diseases. Availability is currently limited until a method for large scale propagation is developed.
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Walker, George Floyd. "Analysis of molecular variation in the federally endangered Astragalus jaegerianus (Fabaceae, Papilionoideae): A species with a restricted geographic range." CSUSB ScholarWorks, 2005. https://scholarworks.lib.csusb.edu/etd-project/2743.
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The purpose of this study is to investigate the level and distribution of genetic variation in Astragalus jaegerianus by using molecular markers. The objectives of the study are: to estimate levels of genetic variation within and among populations of Astragalus jaegerianus; to test the hypothesis that levels and patterns of genetic variation in species of restricted ranges and few individuals is low and partitioned at the population level; and to discern whether, or how well, genetic partitioning of Lane Mountain milk vetch correlates with its geographic partitioning in the field.
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Edwards, Taylor Artemus. "A Biogeographic Perspective of Speciation Among Desert Tortoises in the Genus Gopherus." Diss., The University of Arizona, 2015. http://hdl.handle.net/10150/556486.
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One of the important contributions genetic studies have made to conservation is the ability to resolve taxonomy and define relationships among populations. However, this can be complicated when species exhibit hybridization. Hybridization can be an important part of the evolutionary process and a critical component in a species ability to adapt to a changing environment. Most hybrid zones are observed at ecotones between two distinct habitats and this may be important in defining the role of hybrid zones in the evolutionary process. I examined hybridization among the three distinct lineages of desert tortoises in the genus Gopherus. An important aspect of this study system is the presence of areas of overlap between divergent lineages of desert tortoise which allowed me to test hypotheses about which forces influence these taxonomic boundaries. Specifically, I tested hypotheses about the contribution of physical vs. ecological segregation and the relative importance of isolation and gene flow in the formation of these disparate desert tortoise lineages. I used mtDNA sequence data and 25 microsatellite loci to perform Bayesian clustering, clinal analyses and habitat suitability modeling to infer population structure and influence of landscape features at each contact zone. In both instances, I observed ecological niche partitioning and limited hybridization at ecotones. I then used mtDNA and four nDNA loci to perform a multi-locus phylogenetic analysis to estimate the species tree among desert tortoise lineages and tested for ancestral admixture with RNA-seq data using demographic inference employed in the software package ∂a∂i. My results validate taxonomic distinction among all three lineages without evidence of ancestral introgression. These data suggest that despite the presence of contemporary hybridization and incomplete reproductive isolation, divergence among these lineages is consistent with species-level differentiation. By clarifying the evolutionary processes that influence the distribution of desert tortoise lineages, this study will directly inform efforts to preserve the evolutionary potential of these threatened species. Ultimately, understanding the evolutionary history of desert tortoises not only clarifies the forces that have driven speciation in this group, but it also contributes to our knowledge of the biogeographic history of the southwestern deserts and how diversity is maintained within them.