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Articles 16651 - 16680 of 16838
Full-Text Articles in Physical Sciences and Mathematics
Vandafil Advanced Blend, Vandafil Advance
Vandafil Advanced Blend, Vandafil Advance
vandafil advance
Surface-Enhanced Raman Study: Effect Of Ph And Electrode Potential On The Interfacial Behavior Of Some Substituted Pyridines, Mark Anderson, Daniel Evans
Surface-Enhanced Raman Study: Effect Of Ph And Electrode Potential On The Interfacial Behavior Of Some Substituted Pyridines, Mark Anderson, Daniel Evans
Mark R. Anderson
The surface-enhanced Raman spectra (SERS) provide information about the extent of protonation of the species adsorbed at the silver/aqueous solution interface. The compounds investigated were 4-pyridylcarbinol (1), 4-acetylpyridine (2), 3-pyridinecarboxaldehyde (3), isonicotinic acid (4), isonicotinamide (5), 4-benzoylpyridine (6), 4-(aminomethyl)pyridine (7) and 4-aminopyridine (8). For 1, the fraction of the adsorbed species which was protonated at -0.20 V vs. SCE varied with pH in a manner indicating stronger adsorption of the neutral than the cationic form. The fraction protonated increased at more negative potentials. Similar results were obtained with 3. For all compounds but 4, bands due to the unprotonated species …
Constraints On Left-Right-Symmetric Models From Neutron Decay, As Carnoy, J Deutsch, Br Holstein
Constraints On Left-Right-Symmetric Models From Neutron Decay, As Carnoy, J Deutsch, Br Holstein
Barry R Holstein
The implications for left-right-symmetric models of recent neutron-β-decay asymmetry and lifetime measurements are analyzed. The significance of forthcoming high-precision lifetime measurements is stressed.
Surface-Enhanced Raman Study Of The Effect Of Electrode Potential And Solution Ph Upon The Interfacial Behavior Of 4-Pyridinecarboxaldehyde, Mark Anderson, Dennis Evans
Surface-Enhanced Raman Study Of The Effect Of Electrode Potential And Solution Ph Upon The Interfacial Behavior Of 4-Pyridinecarboxaldehyde, Mark Anderson, Dennis Evans
Mark R. Anderson
Surface-enhanced Raman scattering (SERS) spectra were obtained at a silver electrode in aqueous solutions at potentials from -0.2 to -0.6 V vs SCE and pH 1-7. The forms of 4-pyridinecarboxaldehyde that are adsorbed parallel those present in solution. In particular, the fraction of adsorbed species that is protonated at -0.2 V varies with pH in a manner almost identical with the fraction that is protonated in bulk solution. The protonated compound exists almost completely in the hydrated form (gem-diol) in the interface just as it does in solution. At a given pH, the fraction protonated on the surface increases as …
The Effect Of Solvent Type On The Infrared Spectrum Of Carbon Monoxide Adsorbed On A Platinum Electrode, Stanley Pons, Mark Anderson, Daniel Blackwood
The Effect Of Solvent Type On The Infrared Spectrum Of Carbon Monoxide Adsorbed On A Platinum Electrode, Stanley Pons, Mark Anderson, Daniel Blackwood
Mark R. Anderson
No abstract is currently available.
A Comprehensive Method To Characterize Mixed Conduction Electrolytes, Michael P. Setter, J. Bruce Wagner Jr.
A Comprehensive Method To Characterize Mixed Conduction Electrolytes, Michael P. Setter, J. Bruce Wagner Jr.
Michael P. Setter
Determination of the electrical characteristics of an electrolyte is vitally important to the design of battery materials and sensors. A wide variety of parameters are available from both dc and ac measurements. Through the use of computer control and a custom multiplexor, we can perform dc polarization and ac impedance measurements on a sample, without replacing electrodes.
"The Infrared Spectra Of Carbon Monoxide Adsorbed On A Polycrystalline Platinum Electrode From Nonaqueous Solutions, Mark Anderson, Daniel Blackwood, Stanley Pons
"The Infrared Spectra Of Carbon Monoxide Adsorbed On A Polycrystalline Platinum Electrode From Nonaqueous Solutions, Mark Anderson, Daniel Blackwood, Stanley Pons
Mark R. Anderson
No abstract is currently available.
Http://Jackedextreme.Com/Noticeably-Skin/, Sobre Esdruj
Http://Jackedextreme.Com/Noticeably-Skin/, Sobre Esdruj
sobre esdruj
Ab Initio Approach To The Deuteron In The Skyrme-Witten Model, Alec Schramm
Ab Initio Approach To The Deuteron In The Skyrme-Witten Model, Alec Schramm
Alec J Schramm
No abstract provided.
A Calculation Of The Deuteron As A Biskyrmion, Alec Schramm, Yossef Dothan, L. Beidenharn
A Calculation Of The Deuteron As A Biskyrmion, Alec Schramm, Yossef Dothan, L. Beidenharn
Alec J Schramm
No abstract provided.
Two Discrete Forms Of The Jordan Curve Theorem, Lawrence N. Stout
Two Discrete Forms Of The Jordan Curve Theorem, Lawrence N. Stout
Lawrence N. Stout
The Jordan curve theorem is one of those frustrating results in topology: it is intuitively clear but quite hard to prove. In this note we will look at two discrete analogs of the Jordan curve theorem that are easy to prove by an induction argument coupled with some geometric intuition. One of the surprises is that when we discretize the plane we get two Jordan curve theorems rather than one, a consequence of the interplay between two natural products in the category of graphs. Topology in this context has been studied by Farmer in [2]. To state the discrete versions, …
Toeplitz Systems Associated With The Product Of A Formal Laurent Series And A Laurent Polynomial, William F. Trench
Toeplitz Systems Associated With The Product Of A Formal Laurent Series And A Laurent Polynomial, William F. Trench
William F. Trench
No abstract provided.
Numerical Solution Of The Eigenvalue Problem For Symmetric Rationally Generated Toeplitz Matrices, William F. Trench
Numerical Solution Of The Eigenvalue Problem For Symmetric Rationally Generated Toeplitz Matrices, William F. Trench
William F. Trench
No abstract provided.
Asymptotic Integration Of A Perturbed Constant Coefficient Differential Equation Under Mild Integral Smallness Conditions, William F. Trench
Asymptotic Integration Of A Perturbed Constant Coefficient Differential Equation Under Mild Integral Smallness Conditions, William F. Trench
William F. Trench
No abstract provided.
Http://Glycematefacts.Com/Ketoviante/, Keithm Aderer
Http://Glycematefacts.Com/Ketoviante/, Keithm Aderer
keithm aderer
Http://Firmativabout.Com/Ketoviante/, Keithm Aderer
Http://Firmativabout.Com/Ketoviante/, Keithm Aderer
keithm aderer
Gauge-Invariance And Quantization, Br Holstein
Gauge-Invariance And Quantization, Br Holstein
Barry R Holstein
Quantizing theories such as quantum electrodynamics that contain a gauge invariance are discussed via a simple pedagogical example. Canonical and path integral quantization methods are compared.
On A General Class Of Multivariate Linear Smoothing Operators, Tian-Xiao He
On A General Class Of Multivariate Linear Smoothing Operators, Tian-Xiao He
Tian-Xiao He
No abstract provided.
Asymptotic Properties Of Positive Summation-Integral Operators, Tian-Xiao He
Asymptotic Properties Of Positive Summation-Integral Operators, Tian-Xiao He
Tian-Xiao He
No abstract provided.
On Minimal And Quasi-Minimal Supported Bivariate Splines, Tian-Xiao He
On Minimal And Quasi-Minimal Supported Bivariate Splines, Tian-Xiao He
Tian-Xiao He
No abstract provided.
Semiclassical Treatment Of The Double Well, Br Holstein
Semiclassical Treatment Of The Double Well, Br Holstein
Barry R Holstein
The double well potential V(x)= 1/4 λ(x2-α2)2 is addressed using both semiclassical path integral and instanton techniques. The basic physics of the two-state system is shown to arise, and energy levels calculated via the two methods are compared.
Comment On "Percolation In Isotropic Elastic Media.", Anthony Day, M. Thorpe
Comment On "Percolation In Isotropic Elastic Media.", Anthony Day, M. Thorpe
Anthony Roy Day
No abstract provided.
Efficient Application Of The Schauder-Tychonoff Theorem To Functional Perturbations Of $X^(N)=0$, William F. Trench
Efficient Application Of The Schauder-Tychonoff Theorem To Functional Perturbations Of $X^(N)=0$, William F. Trench
William F. Trench
No abstract provided.
Spectral Dimensionality Of Random Superconducting Networks, Anthony Roy Day, W. Xia, M. F. Thorpe
Spectral Dimensionality Of Random Superconducting Networks, Anthony Roy Day, W. Xia, M. F. Thorpe
Anthony Roy Day
We compute the spectral dimensionality d-tilde of random superconducting-normal networks by directly examining the low-frequency density of states at the percolation threshold. We find that d-tilde=4.1±0.2 and 5.8±0.3 in two and three dimensions, respectively, which confirms the scaling relation d-tilde=2d/(2-s/ nu ), where s is the superconducting exponent and nu the correlation-length exponent for percolation. We also consider the one-dimensional problem where scaling arguments predict, and our numerical simulations confirm, that d-tilde=0. A simple argument provides an expression for the density of states of the localized high-frequency modes in this special case. We comment on the connection between our calculations …
Stability Of Networks Under Tension And Pressure, Anthony Roy Day, H. Yan, M. F. Thorpe
Stability Of Networks Under Tension And Pressure, Anthony Roy Day, H. Yan, M. F. Thorpe
Anthony Roy Day
The number of zero-frequency modes of an elastic network is an important quantity in determining the stability of the network. We present a constraint-counting method for finding this number in general central-force networks that are under an external tension. The technique involves isolating the backbone and then counting constraints in the same way as for free standing networks. A detailed example of this counting is given for a random two-dimensional network subject to an external tension. The results are shown to agree with the number of zero-frequency modes as determined by a direct matrix diagonalization.
Electron Beam Effects In The Analysis Of Compound Semiconductors And Devices, Nancy Burnham, Ll Kazmerski, Ab Swartzlander, Aj Nelson, Se Asher
Electron Beam Effects In The Analysis Of Compound Semiconductors And Devices, Nancy Burnham, Ll Kazmerski, Ab Swartzlander, Aj Nelson, Se Asher
Nancy A. Burnham
The effects of electron beams on the analysis of CuInSe2surfaces are examined in this paper. Potential changes in the surface chemistry—including oxidation and desorption—under a range of incident probe conditions, are investigated for possible artifactual information generation. Emphasis is placed on the relationships between beam conditions and oxygen chemisorption and physisorption, since oxygen treatments of devices utilizing this semiconductor are critical to performance. Single crystals and polycrystalline thin films are analyzed and compared to establish the beam‐induced phenomena.
Surface-Enhanced Raman Study Of The Effect Of Ph And Electrode Potential On The Surface Concentrations Of The Electroactive Forms Of Pyridinecarboxaldehydes, Dennis Evans, Mark Anderson
Surface-Enhanced Raman Study Of The Effect Of Ph And Electrode Potential On The Surface Concentrations Of The Electroactive Forms Of Pyridinecarboxaldehydes, Dennis Evans, Mark Anderson
Mark R. Anderson
No abstract is currently available.
Cp Violation In K-]3-Pi, Jf Donoghue, Br Holstein, G Valencia
Cp Violation In K-]3-Pi, Jf Donoghue, Br Holstein, G Valencia
Barry R Holstein
No abstract provided.
The Systematic Design Of A Composite Electrolyte, Michael Setter, J. Wagner
The Systematic Design Of A Composite Electrolyte, Michael Setter, J. Wagner
Michael P. Setter
No abstract provided.
Problems, Lawrence Stout