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 20 of 41 for “"Environmental Stability"”.
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Improving the Environmental Stability of Methylammonium-Based Perovskite Solar Cells
… methylammonium lead iodide (MAPbI3), is environmentally unstable and degrades in the presence of oxygen, light, and moisture. Thus, despite its high initial performance, the degrading performance over time means that the levelized cost of electricity (LCOE) of perovskites is prohibitively …
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Mechanical behavior and environmental stability of GLAD-based Cu nanospring films
… on quantifying the mechanical performance and environmental stability of GLAD-based materials via film-level and individual nanowire experiments. The compressive behavior of GLAD-based Cu nanospring films was quantified at the forest level by axial compression experiments performed on films …
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The hydroecology of groundwater-fed streams in a glacierised catchment
… lower diversity. Within the hyporheic zone, environmental stability of surface waters was influential, as this reflected the sub-surface residence time of percolating waters; nested routes of flow within each flow pathway, of varying length or permeability, created differences in the …
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The importance of hydrologic refugia for the diversity of the Cape Flora
… narrow-range endemics (WD-NREs) and explore the environmental correlates of these distributions. I make use of Quarter degree square grid cells as a measuring unit, which are larger (~20 km across), than the scale at which microrefugia typically occur, however, the broad environmental …
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On-Metal Synthesis of Some Aryl Substituted Rhenium η<sup>5</sup> Cyclopenta[C] Pyridazyl Complexes
… polymers due to their novel properties and environmental stability as compared to non-aromatic analogs (e.g. polyacetylene). We are interested in synthesizing organometallic pyridazines and rhenium pyridazyl complexes for polymer research. SeveraI5,6-fused ring pyridazines …
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The study of photo-thermal lensing system and its applications
… films in coatings with low absorption and good environmental stability are required for the development of high power lasers, because even slightest absorbing defects could lead to material's breakdown. Thus, a non-destructive absorption measurement is required to measure the absorption of …
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Soluble carbohydrates in soybean - discovery of novel genetic resources and evaluation of known mutations
… via QTL mapping, and iii) the evaluation of environmental stability and genetic effect of soybean lines differing in allele combinations between raffinose synthase (RS) and D-myo-inositol-3-phosphate synthase 1 (MIPS1) mutations for soluble carbohydrates. Through GWAS, seven significant …
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COMPARATIVE BIOGEOGRAPHY OF NORTH AMERICAN PIKA PARASITES: UNRAVELING A HISTORY DRIVEN BY CLIMATE CHANGE
… and vicariance cycles reflecting periods of environmental stability and perturbation, leading to complex histories of colonization and host-switching within pikas.</p>
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Seasons and Sovereigns: Succession in the Greenworld, 1579 - 1621
… of how or why early modern subjects charted environmental stability over time. <bold>Seasons and Sovereigns</bold> addresses this occlusion by studying the course of nature as it pertains to sudden dissolution, long periods of stability, or constant change in volatile Elizabethan and early …
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Assessing coupled mechanical behavior and environmental degradation at submicron scales
… deformation and fracture mechanisms, and environmental resistance of materials at submicron scales have been investigated through the combination of nanomechanical testing, high resolution microscopy, diffraction, and electrochemical testing. Nanomechanical techniques were used to isolate …
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Addressing climate-driven challenges in groundwater management and coastal hydrogeology through numerical modeling
… insights for water resource resilience and environmental stability in coastal regions.
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Chemical vapor deposition of polymeric films
… a good intrinsic conductor and have high thermal stability and high environmental stability. In this project, chemical vapor deposition (CVD) and plasma enhanced chemical vapor deposition (PECVD) of carbon films with PPN structure using PTCDA as precursor were carried out under different …
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Temporally Correlated Dirichlet Processes in Pollution Receptor Modeling
… precursor to promoting public health and environmental stability. One aspect of understanding pollution is understanding pollution sources. Various methods have been used and developed to understand pollution sources and the amount of pollution those sources emit. Multivariate receptor …
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Alloyed heterojunction nanorods and their applications
… exchange procedure to greatly improve their environmental stability. Then, we integrated them into sensitized solar cells. By alloying CdTe with Se through a slow-injection procedure and by adopting a partial core/shell morphology, we were able to better balance light absorption with charge …
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Development of polymer bonded magnets with enhanced magneto-mechanical properties for high temperature and aggressive environments
… powders. The processibility, thermal and environmental stability, corrosion resistance and magnetic properties of polyphenylene sulfide (PPS) bonded Nd-Fe-B magnets can be enhanced by treating the Nd-Fe-B powders with a suitable silane coupling agent prior to blending with the polymer and …
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Novel Materials for Use in Homeland Security Research
… in polymer research due to their atypical environmental stability (as compared to other non-aromatic organic semiconductors) as well as their conductivity. The off-metal synthesis and characterization of several pyridazyl thallium, manganese, and rhenium complexes, beginning with fulvenes …
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Off-Metal Synthesis of Some Aryl Substituted Rhenium n5-Cyclopenta [C] Pyridazyl Complexes
… polymers due to their novel properties and environmental stability as compared to non-aromatic analogs (e.g. polyacetylene). Our current interests focus upon the potential role of pyridazines in next generation electronic devices that utilize organics as the semiconducting material. …
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The eco-evolutionary consequences of multiple introductions for colonizing individuals
… more important for establishment, or under what environmental conditions their relative importance may shift. We used 917 independent Tribolium flour beetle populations in a microcosm experiment to disentangle the importance of the different components of propagule pressure. In a factorial …
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Designing Amphiphilic Peptoids for Controlling the Formation of Nanostructured Biomimetic Materials
… advantages, including resistance to degradation, environmental stability, and ease of synthesis. With programmable sequences with diverse side-chain chemistries, peptoids enable precise control over molecular interactions and self-assembly pathways, making them ideal for studying and engineering …
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