Physical Sciences and Mathematics Commons^™

Work-Function Anisotropies As An Origin Of Long-Range Surface Forces, Nancy Burnham, R Colton, H Pollock

Nancy A. Burnham

Unusual effects noticed in previous force microscopy data are explained by a model based on work-function anisotropies and their associated patch charges. Measurable forces between macroscopic bodies can be due to the interaction of patch charges, with important consequences in the fields of surface forces, contact mechanics, adhesion, Schottky barriers, and the surface properties of insulators.

The Elastic Moduli Of A Sheet Containing Circular Holes, Anthony Day, K. Snyder, E. Garboczi, M. Thorpe

Anthony Roy Day

We apply computer simulation techniques to obtain the clastic moduli of a matrix containing circular holes. As the area fraction of holes increases, the Young's modulus of the composite decreases from E0 until it eventually vanishes at the percolation threshold. We study three distinct geometries: (a) periodically centered circular holes on a honeycomb lattice, (b) periodically centered circular holes on a triangular lattice, and (c) randomly centered circular holes. All three cases have the same dilute limit that can be calculated exactly. By examining the narrow necks between adjacent circles, we have calculated the critical behavior for the regular cases …

Hplc Analysis Of Amino Acid-Derived Chloramines, Thomas Goyne, Suzanne Furness, Tracy Inskeep, Heather Greenleaf

Thomas Goyne

No abstract provided.

Importance Of Biodiversity For Our Development (Earth Summit), Nat Quansah

Nat Quansah

No abstract provided.

Investigations Of Analytical Surfaces By Fourier Transform Infrared Spectroscopy, Mark Anderson

Mark R. Anderson

No abstract is available at this time.

Obat Turun Peranakan Terlaris, Aman Dijamin Sembuh Permanen, Hanifathu Rizkiyah

Herbal Keramat

Quark-Antiquark Condensates In Strong Magnetic Fields, Alec Schramm, Berndt Muller, Stefan Schramm

Alec J Schramm

We discuss the effect of large external magnetic fields on the QCD vacuum structure. We show that the deformed vacuum leads to substantial changes in the hadronic spectrum.

Psg - Dijon En Direct Live, En Direct / Live. Psg - Dijon - Ligue 1 - 18 Mai 2019

EN DIRECT / LIVE. PSG - Dijon - Ligue 1 - 18 mai 2019

Selectivity In Detection Of Analytes In Flowing Streams Using Piezoelectric Quartz, Mark Anderson, John Roush, David Thacker

Mark R. Anderson

No abstract is currently available.

Characterization Of Electrochemical Double Layer From The Infrared Spectroscopic Behavior Of Adsorbed Carbon Monoxide, Mark Anderson

Mark R. Anderson

No abstract is currently available.

A Binomial Test Of Model Fit, John Fraas, Isadore Newman

John W. Fraas

No abstract provided.

W Boson Condensation In P-P Collisions?, Alec Schramm, Stefan Schramm, Berndt Muller

Alec J Schramm

We address the question of whether W+/- boson condensation can occur in high-energy collisions.

Hajar Jahanam Asli | Obat Kuat Hajar Cair | Obat Ejakulasi Dini, Dewi Jum

Toko Obat Dewasa Pasutri

Hplc Analysis Of Amino Acid-Derived Chloramines, Thomas Goyne, Suzanne Furness, Scott Miller, Matthew Nelsen

Thomas Goyne

No abstract provided.

Residual Waste Management: A Quick Guide To Decision-Making, John Dernbach

John C. Dernbach

No abstract provided.

High Performance Memory System Pct:Ep0199134, Robert Iannucci

Robert A Iannucci

No abstract provided.

On The Dirichlet Problem For The Degenerate Real Monge Ampère Equation, Bert Wachsmuth

Bert Wachsmuth

No abstract provided.

A Capacity Theory Of Comprehension: Individual Differences In Working Memory, Marcel Just, Patricia Carpenter

Marcel Adam Just

No abstract provided.

Adaptive Estimation In Timeseries Regression Models, Douglas Steigerwald

Douglas G. Steigerwald

I develop adaptive estimators for linear regression with serially correlated errors. The efficiency results hold even when the serial correlation structure is unknown. Simulations indicate that efficiency gains can be substantial with samples of only 50 observations. We apply the method to a study of forward exchange rates.

Industrial Waste Management, John Dernbach

John C. Dernbach

No abstract provided.

Chiral Invariance And Electroweak Interactions Of Pions And Kaons, Br Holstein

Barry R Holstein

Electroweak interactions of pions and kaons are studied in the context of chiral perturbation theory. We demonstrate that the effective Lagrangian framework allows a consistent and predictive picture of such processes as well as a succinct way in which to represent the many previous studies of these reactions which have been performed using chiral models.

Displacement, Velocity, And Frames Of Reference: Phenomenographic Studies Of Students’ Understanding And Some Implications For Teaching And Assessment, John Bowden, Gloria Dall'alba, Elaine Martin, D Laurillard, Ference Marton, Geoff Masters, Paul Ramsden, Andrew Stephanou, E Walsh

Prof Geoff Masters AO

Student understanding of fundamental concepts in kinematics has been explored using the phenomenographic research method. University and high schoolphysics students were interviewed and their understandings of displacement, velocity, and frames of reference have been analyzed in particular problem contexts. Descriptions of the different ways students understand the concepts have been developed and relations between the different levels of understanding have been identified. The data highlight the contextual nature of learning and the need for teachers to focus on the nature of student understanding in specific contexts using questions that require qualitative explanation by students. In particular, it is demonstrated that …

A High Yield Microscale Enzymatic Synthesis And Purification Of 14c‐Labeled Nicotinamide Adenine Dinucleotide Phosphate (Nadp+), Andre Ronneberg, Gordon Metz, Richard Weld, Peter Roffey, Chris Craney

Chris L. Craney

Uniformly labeled (U) 14C nicotinamide adenine dinucleotide phosphate (NADP+) was synthesized by phosphorylating [U-14C]nicotinamide adenine dinucleotide (NAD+) in the presence of immobilized NAD+ kinase. The 15 μCi (600 μL) synthesis consistently achieved yields between 80% and radiochemical purities greater than 95%. The [U-14C]NADP+ was purified by high performance anion-exchange chromatography using a gradient elution of ammonium bicarbonate. This procedure may be applicable to the synthesis of other charged, UV-absorbing products of enzyme-catalyzed reactions.

The Logic Of Unbalanced Subobjects In A Category With Two Closed Structures, Lawrence Stout

Lawrence N. Stout

No abstract provided.

On The Finite Sample Behavior Of Adaptive Estimators, Douglas Steigerwald

Douglas G. Steigerwald

With only 50 observations, the adaptive estimator produces confidence intervals that are 20 to 50 percent shorter than those produced by GLS procedures. The key feature is that the underlying error density is symmetric. Under asymmetry the interval length is shortened by a smaller amount.

Asymptotic Behavior Of Solutions Of A Linear Second Order Difference Equation, William F. Trench

William F. Trench

No abstract provided.

Mild Integrability Conditions For Global Solutions Of An Elliptic Equation, William F. Trench

William F. Trench

No abstract provided.

Global Solutions Of Nonlinear Differential Equations, William F. Trench

William F. Trench

No abstract provided.

A Course In Econometrics: A Review, Douglas G. Steigerwald

Douglas G. Steigerwald

No abstract provided.

A Class Of Direct Search Methods For Nonlinear Integer Programming, Stephen J. Sugden

Stephen Sugden

This work extends recent research in the development of a number of direct search methods in nonlinear integer programming. The various algorithms use an extension of the well-known FORTRAN MINOS code of Murtagh and Saunders as a starting point. MINOS is capable of solving quite large problems in which the objective function is nonlinear and the constraints linear. The original MINOS code has been extended in various ways by Murtagh, Saunders and co-workers since the original 1978 landmark paper. Extensions have dealt with methods to handle both nonlinear constraints, most notably MINOS/AUGMENTED and integer requirements on a subset of the …