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.
Results
Showing 1 to 20 of 50 for “"Water Dynamics"”.
-
Water dynamics about selected monosaccharides in solution
The solubility of molecules in water is governed, amongst other things, by the inherent properties of the solute molecules and water molecules. Water molecules are able to simultaneously form hydrogen bonds as donors and acceptors and thus have unique properties as solvent molecules. These …
-
Studies on hydration water dynamics and microstructure of synthetic cement
… In a wet paste, the porosity links to the free water volume after hydration. Structural water which presents in the solid phase, constrained water absorbed on the surface of the pores and free water in the center of the pores have different dynamical behavior. Hence, it should be possible to …
-
The membrane, interstitium, lymphatic system : a model of lung water dynamics
Thesis (Ph.D.)--Harvard--Massachusetts Institute of Technology Division of Health Sciences and Technology Program in Medical Engineering and Medical Physics, 1984.
-
INVESTIGATION OF THE HYDRAULIC CHARACTERISTICS OF COASTAL REDWOODS THROUGH ANALYSIS OF WATER DYNAMICS
… during the climate change disturbs the global water cycle and harms the earth ecosystem. Because trees provide critical ecosystem services, it is important to understand how they respond to the changing environment to gauge the negative impact of the climate change on the ecosystem. Water is …
-
Hydrologic Function Between Upland and Floodplain Shallow Water Dynamics of the Four Hole Swamp Fringe
… adjacent upland by measuring and mapping shallow water table dynamics and hydrology over a seven month period. To study hydrologic function, shallow wells using two inch PVC were placed along the demarcation of upland and wetland. Six wells were run along the delineation in four parallel pairs; …
-
Remote sensing-based assessment of crop yield and water dynamics in the southern Great Plains (USA)
… and understanding yield variability and water management in diverse cropping systems. This is particularly important in water-limited areas, such as the southern Great Plains, where water is the key to sustaining agricultural production. Therefore, the present research integrated remote …
-
Science in a constructivist classroom: Progress in a five-year-old child's reasoning about water dynamics
1 PDF file (ix, 186 pages)
-
Coupled Behaviour of Soil and Plant Water Dynamics: Effects of Vegetation Cover, Soil Type and Fire Disturbance
Plant and soil water dynamics are crucial for terrestrial carbon uptake, agriculture and human livelihoods. As plants primarily rely on water uptake from the soil, soil and plant water dynamics are strongly coupled over most of the land surface. Soil and plant water dynamics also play a crucial …
-
VELAS: a fully-distributed daily hydrologic feedback model with emphasis on vegetation, land cover, and soil water dynamics
… model, VELAS (the VEgetation- LAnd cover-Soil water dynamics), to simulate daily responses of hydrologic processes including interception, runoff, evapotranspiration, infiltration, and recharge under various conditions of vegetation, land cover, and soil in a fullydistributed manner. The daily …
-
Phenology Effects on Carbon and Water Dynamics in a Pristine Boreal Fen A multi-decadal analysis from 2005-2007 & 2014-2022
… major constituents of the global carbon (C) and water cycles and therefore important climate regulators. These cycle dynamics are strongly determined by plant phenology (e.g.,vascular plant photosynthesis and seasonality) and evapotranspiration (ET), next to other abiotic factors. While it is …
-
Synthesis of guanidinium-functionalized amphiphiles for the exploration of chaotropic supramolecular nanoribbons
… amphiphile nanofibers surface for the study of water dynamics by attaching a chaotropic guanidinium head group. This head group will disturb the hydrogen bonding network of surrounding water, causing a measurable change in water dynamics when analyzed using Overhauser Dynamic Nuclear …
-
Molecular Dynamics Simulation Studies on Interfacial Dynamics of Proteins
Clusters of water molecules embedded in proteins or at the interface between globules mediate protein dynamics, allostery and charge transfer. Confined clusters of water molecules exhibit dynamics distinct from dynamics of water in the bulk or in the hydration layer around biomolecules. Here, we …
-
Nanoscale Liquid Dynamics in Membrane Matrices: Insights into Confinement, Molecular Interactions, and Hydration
… on the fundamental understanding of liquid dynamics confined in polymer membranes. Such knowledge guides the development of better polymer membranes for practical applications and contributes to the general understanding of confined liquid dynamics in various nanoporous materials. First, we …
-
WETTING TRANSITIONS AT NANOSTRUCTURED SURFACES
… the hydrophilic patch. The finite range of water-substrate interactions, however, blurs the patch boundaries hence the nanodrop geometry varies with the patch size in a gradual manner. We use molecular simulations to examine this dependence on graphene-like surfaces with topological …
-
A computational approach to spectroscopy of molecular systems : modeling, prediction, and design
… environments, focusing on proton transfer, water dynamics, and hydrogen bonding interactions. The spectroscopy motivating this work ranges from nuclear to vibrational to electronic, spanning from 106 to 1015Hz. The work in this thesis focuses on connecting these spectroscopic measurements …
-
QUANTIFYING EFFECTS OF SEASONAL INUNDATION ON METHANE FLUXES FROM FORESTED FRESHWATER WETLANDS
… current methods for measuring the extent and dynamics of wetland areas in global models may not adequately represent processes controlling methane cycling in wetlands and other small water bodies. I studied the role of seasonal hydrologic variability on methane emissions from forested mineral …
-
Experimental Investigations on Multiphase Phenomena in Porous Media
Modeling of waterflow and solute transport in porous media is typically based on the water dynamics only, while the gaseous phase is neglected. Since the two fluids share the same pore space a particular investigation of the gaseous phase is mandatory to understand its influence on the basic …
-
Oxygen dynamics in the bottom waters of lakes: Understanding the past to predict the future
… concentrations are declining in the bottom waters of many lakes around the world, posing critical water quality concerns. Throughout my dissertation, I assessed how bottom-water dissolved oxygen may mediate the effects of climate and land use change on water quality in lakes. First, I …
-
The staying power of perceptions in a dynamic system : a longitudinal stakeholder analysis in the Yellowstone River Valley
… dynamism. To explore longitudinal human-water dynamics in the Yellowstone River reach in Montana (US), this study uses interviews with 15 individuals interviewed in 2006, 2012, and 2018 field seasons. The Yellowstone River is the largest undammed river in the US. It is located in the arid …
-
High Field DNP NMR probe design and application in crystalline solids
… optimization to improve the enhancement. The dynamics and interactions of water molecules are studied in lanthanum magnesium nitrate hydrate (La 2Mg3 (NO 3 )12 24H 20) (LMN) using a variety of 2H and 170 NMR techniques. Variable temperature 2H spectra are studied to characterize water dynamics …
Page 1 of 3