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 29 for “"water structure"”.
-
Utilizing Electron Microscopy And Spectroscopy Methods To Understand Water Structure And Water Doping
<p>Water is the second most common element in the universe and the most studied material on earth. Most of the studies concerning water are from the fields of chemistry and biology. Hence, the structure of water molecules and short range order and interactions are well characterized and understood. …
-
Drug/Water interactions in hydrogel matrices
… has been the investigation of the role of water structuring effects in the widely different extents of irritancy displayed by certain antibiotics. The compounds involved were members of the Lincomycin group of antibiotics. The aqueous solution behaviour of these co~pounds was studied using …
-
Polymerization in Confined Space
… used for the polymerization was a colloid of water/SDS/dodecane/pentanol. The colloidal was stable through the polymerization process only at specific compositions. The system revealed a lamellar water structure which housed the gamma initiated reaction prior and after polymerization the …
-
Solution properties of some gaseous hydrocarbons in water-alkanol mixtures
The solubility of several hydrocarbon gases in water and in aqueous alcohol solvents has been measured in the temperature range 4-61 °C at a total pressure of one atmosphere, by a physical method based on the flowing film technique. Using standard procedures, ΔG ΔH and ΔS of solution have been …
-
Mode Water in the Sea of Japan: A Study on the Reproducibility of Mode Water in the Data-Assimilating Regional Navy Coastal Ocean Model
<p>Mode water in the Sea of Japan (SOJ) is associated with anti-cyclonic eddies that form in the quasi-stationary meanders of the offshore Tsushima Warm Current. Previous work in this region has shown free-running, advanced ocean models are able to capture the physical processes that generate mode …
-
Sattva: The Harmony of Balanced Living - Architecture for Holistic Wellness
… The research explores how elements like light, water, structure and material can be employed to promote the energy flow in space, thus enhancing the healing quality of the environment. It dives into the concept of energy states within spaces and humans influenced by natural and architectural …
-
Effect of cross-linking on the diffusion of water, ions and small molecules in hydrogels
… the aim of exploring the diffusion properties of water, ions, and rhodamine within the polymer at the molecular level. The water structure and diffusion properties were studied at various cross-linking densities with molecular weights of the chains ranging from 572 to 3400. As the cross-linking …
-
Investigating aquaphotomics for fruit quality assessment
… like apple and kiwifruit are more than 80% water. The NIR spectrum of whole intact fruit is dominated by water absorption peaks that shift and vary in shape with changes in quantities such as SSC, DM, and temperature. These variations can significantly reduce predictive model performance for …
-
Structure, property and transport mechanism of water and electrolytes in graphene nanopores
… candidates for various applications such as water desalination, single molecule sensing, etc. Understanding water and ion transport mechanisms and properties in membranes is essential to characterize and design membranes for various applications mentioned above. In nanopores, transport …
-
Adsorption and electrostatic potentials at the electrochemical interface
… electrode surface, exhibit strong sensitivity to water structure. At high coverage, adsorbates decrease the number of interfacial waters, shifts the position of the molecular layers of waters at the interface, and disrupts the water's orientational order. Lastly, cross-sections of the 3D Poisson …
-
Ab initio molecular dynamics simulations of lanthanide coordination structures in water and in faujasite
… as well as in cation exchange in faujasite. The structures of the lanthanide aqua ions were resolved with density functional theory calculations and ab initio molecular dynamics (AIMD) simulations within ~0.05 Å of experimental results. Reaction energies were quantified by predicting the first …
-
Electrolyte Effects on the Kinetics of Comproportionation Electron-Transfer Reactions and on Intervalence Charge-Transfer Band Energies of Binuclear Ruthenium Ammine Complexes
… observation correlates with the known water structure “making” or “breaking” effects of the added halide anions</p>
-
Biomimetic Water-Responsive Structures: From Fundamental Mechanisms to Evaporation Energy Harvesting Applications
<p>Biological systems have developed remarkable water-responsive (WR) structures that deform in response to changes in relative humidity (RH) and convert evaporation energy (chemical potential of water) to mechanical energy. For example, the scales of pinecones open and release pine seeds when the …
-
Effects of long-chain surfactants, short-chain alcohols and hydrolyzable cations on the Hydrophobic and Hydration Forces
… only to those particles whose advancing water contact angles (qa) are in the range of 15-60o. For example, direct surface force measurements conducted between silica substrates, whose qa values are less than 15o, exhibited the existence of repulsive hydration forces at relatively short …
-
Ultrafast 2D IR spectroscopy of membrane peptide systems
… mass, and are themselves diverse in sequence, structure, and function. Combining two-dimensional infrared spectroscopy (2D IR) and molecular dynamics simulation (MD), this thesis explores membrane complexity from two perspectives: first, it addresses the sequence heterogeneity in transmembrane …
-
Environmental effects on the rate of electron transfer in mixed-valence molecules
… Cl$\sb5$5D$\sb2$O. It was found that the hydrate water structure changed dramatically from rapid nearly isotropic motion at room temperature to hindered motion below 200 K. It was postulated that the decrease in the solvate water dynamics could result in an asymmetry in the environment about the …
-
Surface Forces between Silica Surfaces in CnTACl Solutions and Surface Free Energy Characterization of Talc
… forces originating from the changes in water structure across a hydrophobic surface-solution interface. For the TiO₂/water/TiO₂ system, the Hamaker constant was found to be 4±1×10<sup>-20</sup> J. The force curves obtained in the TiO₂/C<sub>n</sub>TACl system showed a …
-
Electrochemical bonding and clay compression
… of foundation sites for the heavy, rigid structures being founded upon them. The first analytical approach to compressive behavior in soil was presented by Terzaghi in the 1920's. Since that time, his consolidation theory has formed the general basis for prediction of soil compressibility …
-
Nanoscale Liquid Dynamics in Membrane Matrices: Insights into Confinement, Molecular Interactions, and Hydration
… nano-scale phase-separation creates bulk-like water in the ionomer membrane and prompts fast transport of mobile species. At relatively low hydrations, the nanoconfinement of the polymer matrix leads to the ordering of confined water and prompts a high energy barrier for transport. We then …
-
Ionic volumes, compressibilities and electrostriction of electrolyte solutions.
A theory of electrostriction of solvent water near ions is developed. The treatment is based on a calculation of the effective pressure which would, in the absence of the field, cause the she change in volume as does the field. It is shown that when the dissolution process is from the crystalline …
Page 1 of 2