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 19 of 19 for “"back reaction"”.
-
Towards sustainable heterogenous catalysis in molecular solar thermal energy storage (MOST) systems
This doctoral thesis focuses on triggering the back-reaction in MOlecular Solar Thermal (MOST) energy storage systems using heterogenous catalysts. The MOST system consists of a pair of organic switchable molecules which can capture solar radiation, can store the energy within its chemical bonds …
-
Modeling Exomoon Formation in Circumplanetary Disks Using Dustpy
… Although the simulations did not include dust back-reaction—thereby excluding the possibility of observing streaming instability—the framework establishes a baseline for future studies. Enabling back-reaction and incorporating substructures such as radial gaps would help identify localized …
-
Structure and function studies of polar mutants of the QA pocket in the bacterial photosynthetic reaction center of Rhodobacter sphaeroides
The bacterial photosynthetic reaction center (RC) is the protein that converts light to chemical energy. The light is initially absorbed by a pair of bacteriochlorophylls that then transfer an electron through a series of cofactors until it reaches the final two electron acceptors, the primary …
-
Bicarbonate Reversible Anionic Inhibition of the Quinone Reductase in Photosystem II
… of 4 at pH 6.0. Also in treated membranes the back reaction between Q$\sb{\rm A}\sp-$ and the S$\sb2$ state of the oxygen evolving complex was inhibited four-fold below pH 7.0 but was unaffected above pH 7.5 in the presence of DCMU. A HCO$\sb3\sp-$ sensitive back reaction with a half-time of …
-
A geochemical analysis of municipal solid waste ash
… ions released by soluble salts. Three types of reactions are identified. 1) After rapid exhaustion of soluble salts, sodium and potassium exhibited nearly steady state behavior due to slow release of ions from less-soluble minerals and glasses. 2) Calcium and sulfate concentrations are …
-
Quantum mechanical study of molecular switches : electronic structure, kinetics and dynamical aspects
… trans form, into the compact cis form. The back reaction can be induced optically or thermally. Quantum chemical calculations, mostly based on density functional theory, on the AB molecule, AB derivatives and related systems are presented. All the calculations were done for isolated species, …
-
Photochemistry of a Series of Weakly Coupled Dinuclear Ruthenium(II) Complexes
… with the form L2Ru(diphen)RuL2. The scope of the reaction was investigated in regards to the ligands, bridging ligands, and starting materials. Several ligands were successful in the synthesis, including 2,2’-bipyridine (bpy), 4,4’-dimethyl-2,2’-dipyridyl (dmb), 1,10-phenanthroline (phen), …
-
Characterizations on bacterial photosynthesis and respiration with optical spectroscopy and magnetic resonance
… on the electron transfers in the LM dimer of the reaction center from Rhodobacter sphaeroides. Compared to the intact reaction center with the H subunit, the LM dimer has similar electron transfer kinetics except for the forward electron transfer from HA- (bacteriopheophytin in the A branch) to QA …
-
Energy loss and equilibration of a highly energetic parton in QCD plasmas
… elastic processes, collinear radiation, and the back-reaction of the jet constituents onto the medium, we are able to follow the energy from the hard scales $\sim E$ all the way to the medium scales $\sim T$. In the first analysis, we consider the energy evolution only in the longitudinal …
-
Frequency domain approach to self-force calculations
In this thesis, the problem of computing the back-reaction, or self-force, caused by a point particle interacting with its own field is studied. In particular, motivated by the prospect of detecting gravitational waves from extreme mass ratio inspiral systems, we consider the motion of the particle …
-
Evolution of 3-d magnetic topology in flare-productive active regions
… near the photosphere after the eruption, and the back reaction of the coronal magnetic field following the energy release. The major contribution of this dissertation is: (1) First study of 3-D magnetic field change associated with flares in the perspective of magnetic inclination angle and …
-
Precision QCD and effective field theories with machine learning
… Large Hadron Collider (LHC) to investigate the back-reaction of EFT dynamics on the PDFs. The considerations presented in the above study then act as an impetus to develop a methodology that is capable of simultaneously determining proton structure alongside BSM dynamics in a consistent …
-
IMPACT OF THE PRE-EQUILIBRIUM STAGE OF ULTRA-RELATIVISTIC HEAVY ION COLLISIONS: ISOTROPIZATION, PHOTON PRODUCTION AND ELLIPTIC FLOWS
… of the problem allows to take into account the back-reaction of the color currents on the classical field. We find that the color-electric field experiences a rapid decay for small $\eta/s$, in both 1+1D and 3+1D space-time configurations; looking at the ratio of longitudinal over transverse …
-
Clay mineral formation and fluid-rock interaction in fractured crystalline rocks of the Rhine rift system : case studies from the Soultz-sous-Forêts granite (France) and the Schauenburg Fault (Germany)
… fluid-controlled, low-temperature clay mineral reactions, ranging from Jurassic times to more recent activity during uplift of the rift shoulder. The progressive decrease in fluid temperatures caused a back-reaction of 2M1 illite to 1Md (R3) illite-smectite, as well as smectite and kaolinite. …
-
The origin of inflation.
… we deduce predictions for the cosmic microwave background (CMB) anisotropies and compare this with what is observed today. It is shown that the long wavelength gravity waves would allow us to probe the initial state, if there were sufficient curvature left in the present-day universe. The lack …
-
Structural and mechanistic investigation towards the regulation of M.tb isocitrate lyase
… it was found that the presence of the ICL reaction product, glyoxylate, may enhance the rate of covalent modification. This work not only provides important structural information about the design of covalent ICL inhibitors, but it also provides insights into the catalytic mechanism of the …
-
Radiation generation and high-field physics phenomena in ultra-intense laser-solid interactions
… emission is necessarily accompanied by a back-reaction, or radiation reaction(RR) force. The second key effect is the production of electron-positron pairs, from the interaction of the high energy radiation with the laser fields. These QED effects will, in turn, impact relativistic plasma …
-
Development of Solar Sensitive Thin Film for Water Splitting and Water Heating using Solar Concentrator
… evolution of H2 and O2 gas, thus eliminating the back-reaction effect. Even Ar+ or N+ ion implantation of energy 30 keV was adopted to vary the energy band gap of TiO2 film in order to absorb visible light.The original anatase phase was not changed by implantation. Increase in full visible …
-
Aspects of quantum field theory, holography and de Sitter
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-02-04 without embargo terms