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Unusual diffraction geometries

Naomi E. Chayen, John R. Helliwell, and Edward H. Snell

in Macromolecular Crystallization and Crystal Perfection

Published in print:
2010
Published Online:
May 2010
ISBN:
9780199213252
eISBN:
9780191707575
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199213252.003.0015
Subject:
Physics, Crystallography

Unusual diffraction geometries may seem a curiosity but may stimulate novel avenues of application. Not least they illustrate a diversity of diffraction‐measuring possibilities. Laue diffraction ... More


Complementary techniques

Naomi E. Chayen, John R. Helliwell, and Edward H. Snell

in Macromolecular Crystallization and Crystal Perfection

Published in print:
2010
Published Online:
May 2010
ISBN:
9780199213252
eISBN:
9780191707575
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199213252.003.0018
Subject:
Physics, Crystallography

Crystallography is a powerful technique but also one that has limitations. There are a number of complementary techniques that significantly add to the information available crystallographically.


Catholic Health Care in the Public Square: Tension on the Frontier

Clarke E. Cochran

David E. Guinn (ed.)

in Handbook of Bioethics and Religion

Published in print:
2006
Published Online:
September 2006
ISBN:
9780195178739
eISBN:
9780199784943
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/0195178734.003.0020
Subject:
Religion, Philosophy of Religion

There is a tendency to see the current challenges to Catholic health care ministry as unprecedented, and the particular shape they take certainly is. But there has always been pressure. The reason is ... More


The factorization method for other types of inverse obstacle scattering problems

Andreas Kirsch and Natalia Grinberg

in The Factorization Method for Inverse Problems

Published in print:
2007
Published Online:
September 2008
ISBN:
9780199213535
eISBN:
9780191707629
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199213535.003.0002
Subject:
Mathematics, Applied Mathematics

This chapter studies some examples of inverse scattering problems in which the data operator fails to be normal. The impedance boundary condition, the reconstruction from limited-angle data, and the ... More


Shadow Stereo, Image Filtering, and Constraint Propagation

Michael Brady, Xiao-Bo Pan, Veit Schenk, Melissa Terras, Paul Robertson, and Nicholas Molton

in Images and Artefacts of the Ancient World

Published in print:
2005
Published Online:
January 2012
ISBN:
9780197262962
eISBN:
9780191734533
Item type:
chapter
Publisher:
British Academy
DOI:
10.5871/bacad/9780197262962.003.0003
Subject:
Archaeology, Methodology and Techniques

It is agreed that stilus tablets are very important documentary sources, however they are the most difficult to decipher. The difficulties in deciphering them is due to the rough surface of the ... More


Tests Of The Gauge Structure Of QCD: Colour Factors

GÜNTHER DISSERTORI, IAN G. KNOWLES, and MICHAEL SCHMELLING

in Quantum Chromodynamics: High Energy Experiments and Theory

Published in print:
2009
Published Online:
January 2010
ISBN:
9780199566419
eISBN:
9780191708060
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199566419.003.0010
Subject:
Physics, Particle Physics / Astrophysics / Cosmology

This chapter examines the QCD lagrangian, focusing on the gauge group governing the dynamics of strong interactions. Experiments are described which verify that QCD is based on the gauge group SU(3). ... More


Basset Horn

Albert R. Rice

in From the Clarinet D'Amour to the Contra Bass: A History of the Large Size Clarinets, 1740-1860

Published in print:
2009
Published Online:
May 2009
ISBN:
9780195343281
eISBN:
9780199867813
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780195343281.003.0003
Subject:
Music, History, Western

For the basset horn, the second chapter develops a precise definition; lists defining features; identifies and defines terminology; establishes origins and history; paints an historical picture; ... More


The derivation of results

Simon Parsons and William Clegg

in Crystal Structure Analysis: Principles and Practice

Published in print:
2009
Published Online:
September 2009
ISBN:
9780199219469
eISBN:
9780191722516
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199219469.003.0015
Subject:
Physics, Crystallography

This chapter takes the next step beyond the refinement of a crystal structure, to look at the meaning and significance of the results. Various geometrical features can be calculated from atomic ... More


Biological Small Angle Scattering: Theory and Practice

Eaton E. Lattman, Thomas D. Grant, and Edward H. Snell

Published in print:
2018
Published Online:
September 2018
ISBN:
9780199670871
eISBN:
9780191749575
Item type:
book
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780199670871.001.0001
Subject:
Physics, Soft Matter / Biological Physics

The technique of small angle solution scattering has been revolutionized in the last two decades. Exponential increases in computing power, parallel algorithm development, and the development of ... More


SURFACE ENERGY AND CAPILLARY PRESSURE

C. Mathew Mate

in Tribology on the Small Scale: A Bottom Up Approach to Friction, Lubrication, and Wear

Published in print:
2007
Published Online:
January 2008
ISBN:
9780198526780
eISBN:
9780191712098
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198526780.003.0005
Subject:
Physics, Condensed Matter Physics / Materials

The energies associated with surfaces — surface energy, interfacial energy, surface tension, and work of adhesion — drive many surface phenomena including tribological ones such as adhesion and ... More


SCANNING TOMOGRAPHY

Alexandre Simionovici, Pierre Bleuet, Bruno Golosio, and Christian Schroer

in Advanced Tomographic Methods in Materials Research and Engineering

Published in print:
2008
Published Online:
May 2008
ISBN:
9780199213245
eISBN:
9780191707582
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199213245.003.0008
Subject:
Physics, Condensed Matter Physics / Materials

In cases where the effect of interest changes the direction of the incoming radiation, the image pixels are no longer decoupled and the sample has to be scanned sequentially using a small focused ... More


Paraxial quantum optics

J. C. Garrison and R. Y. Chiao

in Quantum Optics

Published in print:
2008
Published Online:
September 2008
ISBN:
9780198508861
eISBN:
9780191708640
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198508861.003.0008
Subject:
Physics, Atomic, Laser, and Optical Physics

The classical concept of a paraxial wave is extended to quantum optics as a condition on the state vector, and the family of vectors obeying this condition defines a paraxial Hilbert space. Field ... More


Structure and bonding in simple compounds of the Group 16 elements

Arne Haaland

in Molecules and Models: The molecular structures of main group element compounds

Published in print:
2008
Published Online:
May 2008
ISBN:
9780199235353
eISBN:
9780191715594
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199235353.003.0017
Subject:
Physics, Condensed Matter Physics / Materials

The chapter opens with a description of the structures of derivatives of divalent O, S, Se or Te (i.e., dihydrogen, dimethyl, and dichloro derivatives). It is pointed out that when two particularly ... More


NEUTRON-REFRACTION AND SMALL-ANGLE SCATTERING TOMOGRAPHY

Wolfgang Treimer

in Advanced Tomographic Methods in Materials Research and Engineering

Published in print:
2008
Published Online:
May 2008
ISBN:
9780199213245
eISBN:
9780191707582
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199213245.003.0015
Subject:
Physics, Condensed Matter Physics / Materials

Refraction and small-angle scattering can provide unique imaging signals in situations where absorption- or other attenuation-based effects are insufficient. Attenuation contrast is low in cases ... More


Objective and Subjective Sides of Perception

Alan Gilchrist

in Visual Experience: Sensation, Cognition, and Constancy

Published in print:
2012
Published Online:
September 2012
ISBN:
9780199597277
eISBN:
9780191741883
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199597277.003.0006
Subject:
Psychology, Cognitive Psychology, Vision

Every perceptual experience has an objective and a subjective side. We see object size, independent of distance, but we also see that distant objects project smaller images. Early modern conceptions ... More


Grouping and Early Visual Processing in Avian Vision

Robert G. Cook and Carl Erick Hagmann

in How Animals See the World: Comparative Behavior, Biology, and Evolution of Vision

Published in print:
2012
Published Online:
May 2012
ISBN:
9780195334654
eISBN:
9780199933167
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780195334654.003.0004
Subject:
Psychology, Cognitive Neuroscience, Cognitive Psychology

This chapter examines early visual processing in birds revealed by the analysis of multi-element textured arrays. Pigeons, and presumably most other species of birds, share many common properties ... More


Three-Dimensional Electron Microscopy of Macromolecular Assemblies: Visualization of Biological Molecules in Their Native State

Joachim Frank

Published in print:
2006
Published Online:
April 2010
ISBN:
9780195182187
eISBN:
9780199893416
Item type:
book
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780195182187.001.0001
Subject:
Biology, Biochemistry / Molecular Biology

In this book, the mathematical principles and working methods of single-particle reconstruction are described; a method designed to retrieve three-dimensional structural information from electron ... More


Office Hours with a Geometric Group Theorist

Dan Margalit and Matt Clay (eds)

Published in print:
2017
Published Online:
May 2018
ISBN:
9780691158662
eISBN:
9781400885398
Item type:
book
Publisher:
Princeton University Press
DOI:
10.23943/princeton/9780691158662.001.0001
Subject:
Mathematics, Geometry / Topology

Geometric group theory is the study of the interplay between groups and the spaces they act on, and has its roots in the works of Henri Poincaré, Felix Klein, J.H.C. Whitehead, and Max Dehn. This ... More


Hertz’ s geometry of systems of points

JESPER LÜTZEN

in Mechanistic Images in Geometric Form: Heinrich Hertz's 'Principles of Mechanics'

Published in print:
2005
Published Online:
January 2010
ISBN:
9780198567370
eISBN:
9780191717925
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198567370.003.0013
Subject:
Physics, History of Physics

The relation between mechanics and geometry has changed dramatically over the last 350 years. The first physicist who used differential geometry in mechanics was Heinrich Hertz, and other physicists ... More


Variations on a Riefler bob shape

Robert James Matthys

in Accurate Clock Pendulums

Published in print:
2004
Published Online:
January 2010
ISBN:
9780198529712
eISBN:
9780191712791
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198529712.003.0012
Subject:
Physics, History of Physics

Riefler's bob shape consists of two truncated cones, back-to-back. It is a shape with low air drag, and works well inside the clock case, where front-to-back space is frequently limited. A 1988 study ... More


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