Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 19 of 19 for “"Tolerance mechanism"”.
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Examination of 2,4-D tolerance in perennial Glycine species and the involvement of cytochrome P-450 as a tolerance mechanism
High levels of tolerance to 2,4-D ((2,4-dichlorophenoxy)acetic acid) were expressed at the cell and whole plant level by several accessions of wild perennial Glycine species. Heterotrophic cell suspension cultures of soybean (Glycine max (L.) Merr.) and four perennial Glycine accessions were used …
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FastRecover: simple and effective fault recovery in a distributed operator-based stream processing engine
Fault tolerance is a key requirement in large-scale distributed stream processing engines (SPEs), especially those that run atop commodity hardware. Currently, fault tolerance in popular distributed SPEs is either inadequate (e.g., those without automatic recovery of operator states) or complex and …
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Efflux-Mediated Multidrug Tolerance in Replicating Mycobacteria
… actively growing bacteria. The dormancy model of tolerance has been the center of antitubercular drug research with the pursuit of drugs to target bacterial determinants that are expressed in the nonreplicating phase of infection. My PhD dissertation research determined that replicating bacteria …
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Understanding the mechanism of salt tolerance in alfalfa (Medicago sativa L.)
… growth condition. Understanding of the salt tolerance mechanism and identification of genes responsible for salt tolerance is critical for the development of salt tolerant alfalfa cultivars. We investigated the morphological, physiological and genetic variation of salt tolerant ‘Halo’ and …
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Keeping checkpoint/restart viable for exascale systems
… calculations. Therefore, issues such as fault tolerance and reliability will limit application scalability. Current techniques to ensure progress across faults like checkpoint/restart, the dominant fault tolerance mechanism for the last 25 years, are increasingly problematic at the scales of …
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DNA polymerase interactions and their role In translesion synthesis substitutions.
Translesion synthesis (TLS) is a DNA damage tolerance mechanism that allows DNA replication to continue after a high fidelity (HiFi) polymerase stalls at a lesion. Upon stalling, the HiFi polymerase must be substituted with a TLS polymerase. The reverse substitution must occur promptly after lesion …
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An orthogonal framework for fault tolerance composition in software systems
… systems. As a consequence, fault tolerance is considered as a solution to provide reliability, but the fault tolerance capability is associated with many challenges, such as the right development phase where it needs to be introduced, how it can be composed with the software, and …
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Resiliency of high-performance computing systems: A fault-injection-based characterization of the high-speed network in the blue waters testbed
… checkpointing may no longer be a viable fault tolerance mechanism. This poses serious ramifications for a system's ability to guarantee reliability and availability of its resources. It is becoming increasingly important to understand fault-to-failure propagation and to identify key areas of …
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Molecular mechanisms of stress tolerance in plants
… and strategies for improving resistance and tolerance in crops. In the present thesis, we describe two different approaches that increase our understanding of mechanisms of stress tolerance in plants. The first approach is to study an extreme adaptation to dehydration tolerance from a plant …
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Design and Implementation of a Distributed Lattice Boltzmann-based Fluid Flow Simulation Tool
… In addition, a distributed and scalable fault-tolerance mechanism based on the regular saving of simulation’s state is proposed. Finally, LaBoGrid is based on a distributed master-slave model that is robust and potentially scalable.
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Computational Systems Biology Analysis of Cell Reprogramming and Activation Dynamics
… on lipopolysaccharide (LPS)-mediated priming and tolerance: a reprogramming in cytokine production in macrophages pretreated with specific doses of LPS. Though both priming and tolerance are important in the immune system's response to pathogens, the molecular mechanisms still remain unclear. We …
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Runtime support for object-based message-driven parallel applications on heterogeneous clusters
… example, support for a checkpoint/restart fault tolerance mechanism has been integrated into our accelerator extensions, allowing applications making use of accelerators to make use of this fault tolerance scheme with no additional effort by the programmer.
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Autoimmune Consequences of Histone Deimination during Neutrophil Activation
<p>Tolerance blocks the expression of autoantibodies, whereas autoimmunity promotes it. How tolerance breaks and autoantibody production begins, thus, are crucial questions for the understanding and treatment of autoimmune diseases. Evidence implicates cell death and autoantigen modifications in …
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Functional testing techniques for new massive data processing paradigms
… as the allocation of the resources and the fault tolerance mechanism, among others. As a consequence, a program can behave differently at each execution because it is automatically adapted to the resources available at each moment. This non-deterministic execution makes both software testing and …
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QUERIES IN QUERCUS: FROM THE DEVELOPMENT OF A TISSUE CULTURE CLONAL PROPAGATION SYSTEM TO THE EVALUATION OF STRESS TOLERANT HYBRID WHITE OAKS FOR THE URBAN ENVIRONMENT
… hybrid white oaks and other tree species for tolerance to stresses commonly found in the urban environment. A tissue culture system was developed for the clonal propagation of hybrid white oaks between 2014 to 2018. There were 1,966 buds from 34 genotypes of UHI hybridized white oaks that were …
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Effect of Ozone on CO2 Assimilation and PSII Function in Plants with Contrasting Pollutant Sensitivities
… sites of cellular injury, and identifying ozone tolerance mechanism. The objectives of this study were to investigate the effects of high ozone concentration (200 ppb) as well as ambient ozone concentrations (under field conditions) on net CO2 assimilation and PSII function in plants with …
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Genes, haplotypes and physiological traits associated with a chromosome 3B locus for wheat improvement in hot climates
… environment-type. To study the physiological mechanisms under qYDH.3BL control, we developed heterozygous inbred families (HIF). The lines were phenotyped in the deep soil platform. The lines with the RAC875 allele among the HIFs increased biomass, single grain weight and number of spikelets …
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Alternative Herbicide Control Options for Glyphosate-Resistant Palmer Amaranth (Amaranthus Palmeri)
… aim to (1) establish and compare the degree of tolerance of GR Palmer amaranth populations; (2) assess the efficacy of glufosinate, tembotrione, 2,4-D or dicamba, applied alone or tank-mixed, on Palmer amaranth with higher tolerance to glufosinate in the greenhouse and corn field, and (3) …
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A Fungal secretome tailored to enable a radical (oxidative) wood decay mechanism in brown rot fungi
… organisms. Wood degrading fungi have evolved mechanisms to handle the lignin barrier effectively and harness the carbon present in wood, which makes them also plausible biological templates for industry-related applications such as the production of biofuels. However, there are still several …