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Full-Text Articles in Physical Sciences and Mathematics
Sediment Impacts Of Removal Of A Low-Head Dam On A Sand Bedload River, Ottawa River, Ohio, James E. Evans
Sediment Impacts Of Removal Of A Low-Head Dam On A Sand Bedload River, Ottawa River, Ohio, James E. Evans
James E. Evans
No abstract provided.
Shallow-Water Origin Of A Devonian Black Shale, Cleveland Shale Member (Ohio Shale) Northeastern Ohio, James E. Evans
Shallow-Water Origin Of A Devonian Black Shale, Cleveland Shale Member (Ohio Shale) Northeastern Ohio, James E. Evans
James E. Evans
No abstract provided.
Combined Topographic, Spectroscopic, And Model Analyses Of Inhomogeneous Energetic Coupling Of Linear Light Harvesting Complex Ii Aggregates In Native Photosynthetic Membranes, Suneth P. Rajapaksha, Yufan He, Hong Peter Lu
Combined Topographic, Spectroscopic, And Model Analyses Of Inhomogeneous Energetic Coupling Of Linear Light Harvesting Complex Ii Aggregates In Native Photosynthetic Membranes, Suneth P. Rajapaksha, Yufan He, Hong Peter Lu
H. Peter Lu
Light harvesting by LH1 and LH2 antenna proteins in the photosynthetic membranes of purple bacteria has been extensively studied in recent years for the fundamental understanding of the energy transfer dynamics and mechanism. Here we report the inhomogeneous structural organization of the LH2 complexes in photosynthetic membranes, giving evidence for the existence of energetically coupled linear LH2 aggregates in the native photosynthetic membranes of purple bacteria. Focusing on systematic model analyses, we combined AFM imaging and spectroscopic analysis with energetic coupling model analysis to characterize the inhomogeneous linear aggregation of LH2. Our AFM imaging results reveal that the LH2 complexes …
The Shortcomings Of "Passive" Urban River Restoration After Low-Head Dam Removal, Ottawa River (Northwestern Ohio, U.S.A.): What The Sedimentary Record Can Teach Us, James E. Evans
James E. Evans
No abstract provided.
Single-Molecule Photon Stamping Fret Spectroscopy Study Of Enzymatic Conformational Dynamics, Yufan He, Maolin Lu, Hong Peter Lu
Single-Molecule Photon Stamping Fret Spectroscopy Study Of Enzymatic Conformational Dynamics, Yufan He, Maolin Lu, Hong Peter Lu
H. Peter Lu
The fluorescence resonant energy transfer (FRET) from a donor to an acceptor via transition dipole-dipole interactions decreases the donor's fluorescent lifetime. The donor's fluorescent lifetime decreases as the FRET efficiency increases, following the equation: E-FRET = 1 - tau(DA)/tau(D), where tau(D) and tau(DA) are the donor fluorescence lifetime without FRET and with FRET. Accordingly, the FRET time trajectories associated with single-molecule conformational dynamics can be recorded by measuring the donor's lifetime fluctuations. In this article, we report our work on the use of a Cy3/Cy5-labeled enzyme, HPPK to demonstrate probing single-molecule conformational dynamics in an enzymatic reaction by measuring single-molecule …
Subsurface Facies Analysis Of The Late Cambrian Mt. Simon Sandstone In Western Ohio (Midcontinent, U.S.A.), James E. Evans
Subsurface Facies Analysis Of The Late Cambrian Mt. Simon Sandstone In Western Ohio (Midcontinent, U.S.A.), James E. Evans
James E. Evans
No abstract provided.
Revealing Time Bunching Effect In Single-Molecule Enzyme Conformational Dynamics, Hong Lu
Revealing Time Bunching Effect In Single-Molecule Enzyme Conformational Dynamics, Hong Lu
H. Peter Lu
In this perspective, we focus our discussion on how the single-molecule spectroscopy and statistical analysis are able to reveal enzyme hidden properties, taking the study of T4 lysozyme as an example. Protein conformational fluctuations and dynamics play a crucial role in biomolecular functions, such as in enzymatic reactions. Single-molecule spectroscopy is a powerful approach to analyze protein conformational dynamics under physiological conditions, providing dynamic perspectives on a molecular-level understanding of protein structure-function mechanisms. Using single-molecule fluorescence spectroscopy, we have probed T4 lysozyme conformational motions under the hydrolysis reaction of a polysaccharide of E. coli B cell walls by monitoring the …
A Practical Approach To Optical Cross-Reactive Sensor Arrays, Pavel Anzenbacher Jr., Premsyl Lubal, Pavel Bucek, Manuel A. Palacios, Maria E. Kozelkova
A Practical Approach To Optical Cross-Reactive Sensor Arrays, Pavel Anzenbacher Jr., Premsyl Lubal, Pavel Bucek, Manuel A. Palacios, Maria E. Kozelkova
Pavel Anzenbacher
Supramolecular analytical chemistry has emerged as a new discipline at the interface of supramolecular and analytical chemistry. It focuses on analytical applications of molecular recognition and self-assembly. One of the important outcomes of the supramolecular analytical chemistry is the understanding of molecular aspects of sensor design, synthesis and binding studies of sensors while using rigorous methods of analytical chemistry as a touchstone to verify the viability of the supramolecular aspects of the sensor design. This critical review provides a simplified version of the chemometric procedures involved in realizing a successful analytical experiment that utilizes cross-reactive optical sensor arrays, and summarizes …
The Power Of The Weak: Recognition Of Ion Pairs In Water Using A Simple Array Sensor, Yuan-Li Liu, Manuel A. Palacios, Pavel Anzenbacher
The Power Of The Weak: Recognition Of Ion Pairs In Water Using A Simple Array Sensor, Yuan-Li Liu, Manuel A. Palacios, Pavel Anzenbacher
Pavel Anzenbacher
An array sensor comprising six off-the-shelf indicators doped in a poly(ether-urethane) recognizes five cations, seven anions and thirty-five ion pairs at pH 5-9 in water. Such a discrimination capacity and recognition efficiency (6:35) with >= 93% accuracy is rare. Low cost and wide availability of various polymers and indicators could make this approach useful in numerous applications.
Analysis Of Non-Covalent Interactions Between The Nanoparticulate Fillers Andthe Matrix Polymer As Applied To Shape Memory Performance, I. Sedat Gunes, Cesar Perez-Bolivar, Feina Cao, Guillermo A. Jimenez, Pavel Anzenbacher, Sadhan C. Jana
Analysis Of Non-Covalent Interactions Between The Nanoparticulate Fillers Andthe Matrix Polymer As Applied To Shape Memory Performance, I. Sedat Gunes, Cesar Perez-Bolivar, Feina Cao, Guillermo A. Jimenez, Pavel Anzenbacher, Sadhan C. Jana
Pavel Anzenbacher
Non-covalent interactions between filler particles and polyurethanes were investigated using fluorescence emission spectroscopy. The results were used in the analysis of shape memory (SM) performance of polyurethanes. Composites of shape memory polyurethane (SMPU) and carbon nanofiber (CNF), oxidized carbon nanofiber (ox-CNF), organoclay, silicon carbide, and carbon black were prepared from diphenylmethane diisocyanate, 1,4-butanediol, and poly(caprolactone) diol. It was revealed by fluorescence emission spectroscopy that primarily the urethane groups located in the hard segments of SMPU interacted with the polar functional groups on filler particles. A close correlation between the extent of non-covalent filler-matrix interactions, soft segment crystallinity, and SM properties …
Re-Interpreting Great Lakes Shorelines As Components Of Wave-Influenced Deltas: An Example From The Portage River, Lake Erie, Ohio, James E. Evans
Re-Interpreting Great Lakes Shorelines As Components Of Wave-Influenced Deltas: An Example From The Portage River, Lake Erie, Ohio, James E. Evans
James E. Evans
No abstract provided.