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 42 for “"water stable"”.
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Chlorine in ground water : stable isotope distribution
… weight measurements revealed no variation of the stable isotope ratio, 37C1/ 35C1 (with precision up to 1.0%.) in natural materials. This result is not surprising because chlorine occurs in relatively few compounds, has a strong affinity for the liquid phase, occurs mostly in the -1 oxidation …
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Water stable, antimicrobial active nanofibres generated by electrospinning from aqueous spinning solutions
… solutions necessitated the application of water soluble polymers so that the gained nanofibres exhibited nearly no water stability. Further content of this thesis was therewith the development of different stabilisation techniques for the nanofibres. The formation of antimicrobial …
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Dynamic Crystallization and Stability Engineering in Hybrid Organic-Inorganic Perovskites: Towards Water-Stable and Thermochromic Materials
… in Hybrid Organic-Inorganic Perovskites: Towards Water-Stable and Thermochromic Materials Jiyoon Kim ABSTRACT Hybrid organic-inorganic perovskites (HOIPs) have emerged as promising semiconductors for optoelectronic applications. But their intrinsic instability limits practical applications. This …
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Studies of the mechanisms of stabilization of organic matter in semiarid soils
… for the ultrasonically dispersible and readily water-dispersible fine soil particle-sizefractions. Carbon contents of the fine fractions ultrasonically dispersed from water-stable aggregates of >50 μm equivalent spherical diameter (ESD) were greater than those from smaller (<50 μm ESD) …
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Perennial Grass Based Crop Rotations in Virginia: Effects on Soil Quality, Disease Incidence, and Cotton and Peanut Growth
… indicators including soil carbon and nitrogen, water stable soil aggregates, plant available water content, bulk density, cone index values, and soil moisture. Cotton and peanut growth and yield were also observed to evaluate changes in crop growth associated with differences in soil quality. …
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Enhanced Column Filtration for Arsenic Removal from Water: Polymer-Templated Iron Oxide Nanoparticles Immobilized on Sand via Layer-by-Layer Deposition
Arsenic is ubiquitous in water sources around the world and is highly toxic. While precipitation and membrane filtration techniques are successfully implemented in developed cities, they are unsuitable for rural and low-resource settings lacking centralized facilities. This thesis presents the use …
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Long-term Residue and Water Management Effects on Soil Respiration and Soil Aggregate Stability in a Wheat-soybean, Double-crop System in Eastern Arkansas
… study was to evaluate the long-term effects of water management (irrigation and dryland), residue management [burn and no-burn, conventional (CT) and no-tillage (NT)] and residue/fertility level (high and low) on soil respiration and aggregate stability in a wheat- (Triticum aestivum L.) soybean …
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Evaluating Vegetation, Root, and Media Characteristics of a Bioretention Installation and their Influence on Stormwater Retention
Bioretention manages stormwater through ecological processes which rely on complex interactions between vegetation, root dynamics, and growing media properties. Parameters of three growing media and three vegetation palates in a mature bioretention research facility were investigated in an arid, …
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The Effects of Prescribed Burning on Soil Water Infiltration Rates and Other Select Soil Physical and Chemical Properties in East Texas
… physical and chemical properties, especially water infiltration, in Western Gulf Coast forests. Soil water infiltration rates were measured 1) pre-burn (before the fire), 2) post-burn (one month after the fire), and 3) at vegetation green-up (three months after the fire). Soil samples were …
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M13 virus/single-walled carbon nanotubes as a materials platform for energy devices and biomedical applications
… are developed by utilizing the highly bright and water-stable SWNTs and genetically modifiable M13 virus. The fundamental understanding and new approaches this work presents will provide new insight into designing materials for high performance energy devices and nanobiomedical applications.
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The evaluation of an organophosphate thermosetting resin for use in a high temperature resistant composite and a study of chemistry of ionomer cements
… be the most satisfactory polymers for preparing water stable cements. To study the influence of the nature of the cation and polymer structure on the gelation and water stability of ionomer cements, a wide range of metal oxide-polyacid products have been studied. The formation of water stable …
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ΕΡΕΥΝΕΣ ΕΠΙ ΚΥΑΝΟΦΥΚΩΝ ΕΔΑΦΟΥΣ ΠΕΡΙΟΧΩΝ ΤΗΣ ΕΥΒΟΙΑΣ. ΤΑΞΙΝΟΜΙΚΗ, ΧΛΩΡΙΔΙΚΗ ΦΥΤΟΓΕΩΓΡΑΦΙΚΗ, ΟΙΚΟΛΟΓΙΚΗ ΜΕΛΕΤΗ
… FIX NITROGEN. THE INFLUENCE OF THE SOIL PH, WATER AVAILABILITY, TYPE AND SPECIES OF SOIL, CACO3 CONTENT, UPON THE IDENTIFIED CYANOPHYTA IS STUDIED. THE CYANOPHYTA BOTH IN TERMS OF QUALITY AND QUANTITY, ARE INVESTIGATED IN CULTIVATED AND UNCULTIVATED SOILS (CEREALS, VEGETABLES, VINE-YARDS, …
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Water stability of organic and electrolyte-gated field-effect transistors
… Electro-Chemical Transistor (OECT). However, water constitutes a key factor in charge trapping and device degradation in organic materials, due to its strong dipole moment, high dielectric constant, and its omnipresence in almost all processing, environmental, and operational conditions. In …
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Soil health assessment of the Sanborn Field long-term experimental study
… nitrogen, active carbon, microbial biomass, and water stable aggregates; while a strong negative linear correlation existed between each of these properties and bulk density. The second study was conducted to evaluate the effects of long-term annual applications of no fertilizer, full fertilizer, …
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On-site effects of accelerated erosion on direct-physical soil quality indicators
… in those area classified respectively. The most stable structure and consistency were observed in NVE areas. Medium and large stones were observed in VE areas in all soil types studied. The VE soils were lighter in colour compared to soil colour in NVE. Aggregate stability and moisture content …
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Parametric Excitation of a DWSC
Parametric excitation of the DWSC (Deep Water Stable Craneship) is studied in this thesis. It occurs for a system without any external forcing, when one of the coefficients in the equation of motion (EOM) modeling the system varies with time. Parametric instability might be triggered for certain …
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Synthesis and Chromatography of [RuCp]+-labelled Diaryl Ether Peptoids as Precursors of the Bastadins from the Marine Sponge Ianthella basta
… for diagnostic medicine, uses of the air and water-stable [RuCp]+-labelled amino acids and peptides are very limited. For the first time, aminopropyl silica was employed as stationary phase for the purification and separation of [RuCp]+-complexes, using gradients of iPrOH-CH3CN as mobile …
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Engineering Superparamagnetic Iron Oxide Nanoparticles for Environmental Applications
… and application, materials were rendered water stable through the development of 13 unique surface bilayer strategies, which were focused on a tunable series of ionic surfactants, varying in chain length, functional group, hydrophobicity, and surface charge. For each bilayer strategy, 8 …
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The Husbandry and Nutrition of Carp Larvae and Fry
… advantages in terms of growth. Manufacture of water-stable diets by the use of various binding agents and micro-encapsulation techniques did not substantially improve the performance of diets offered to carp larvae immediately after hatching, and it was concluded that further research will be …
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