Aperiodic Crystals

Aperiodic Crystals PDF Author: Ted Janssen
Publisher: Oxford University Press, USA
ISBN: 0198567774
Category : Science
Languages : en
Pages : 481

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Book Description
Most materials and crystals have an atomic structure which is described by a regular stacking of a microscopic fundamental unit, the unit cell. However, there are also many well ordered materials without such a unit cell. This book deals with the structure determination and a discussion of the main special properties of these materials.

Aperiodic Crystals

Aperiodic Crystals PDF Author: Ted Janssen
Publisher: Oxford University Press, USA
ISBN: 0198567774
Category : Science
Languages : en
Pages : 481

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Book Description
Most materials and crystals have an atomic structure which is described by a regular stacking of a microscopic fundamental unit, the unit cell. However, there are also many well ordered materials without such a unit cell. This book deals with the structure determination and a discussion of the main special properties of these materials.

Calculation of the Dynamic Longitudinal Stability of a Tilt-wing V/STOL Aircraft and Correlation with Model Flight Tests

Calculation of the Dynamic Longitudinal Stability of a Tilt-wing V/STOL Aircraft and Correlation with Model Flight Tests PDF Author: Joseph R. Chambers
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 66

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Book Description


NASA Technical Note

NASA Technical Note PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 544

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Book Description


Aperiodic Order: Volume 2, Crystallography and Almost Periodicity

Aperiodic Order: Volume 2, Crystallography and Almost Periodicity PDF Author: Michael Baake
Publisher: Cambridge University Press
ISBN: 1108514499
Category : Mathematics
Languages : en
Pages : 408

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Book Description
Quasicrystals are non-periodic solids that were discovered in 1982 by Dan Shechtman, Nobel Prize Laureate in Chemistry 2011. The mathematics that underlies this discovery or that proceeded from it, known as the theory of Aperiodic Order, is the subject of this comprehensive multi-volume series. This second volume begins to develop the theory in more depth. A collection of leading experts, among them Robert V. Moody, cover various aspects of crystallography, generalising appropriately from the classical case to the setting of aperiodically ordered structures. A strong focus is placed upon almost periodicity, a central concept of crystallography that captures the coherent repetition of local motifs or patterns, and its close links to Fourier analysis. The book opens with a foreword by Jeffrey C. Lagarias on the wider mathematical perspective and closes with an epilogue on the emergence of quasicrystals, written by Peter Kramer, one of the founders of the field.

X-Ray and Neutron Diffraction

X-Ray and Neutron Diffraction PDF Author: G. E. Bacon
Publisher: Elsevier
ISBN: 1483158292
Category : Science
Languages : en
Pages : 393

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Book Description
X-Ray and Neutron Diffraction describes the developments of the X-ray and the various research done in neutron diffraction. Part I of the book concerns the principles and applications of the X-ray and neutrons through their origins from classical crystallography. The book explains the use of diffraction methods to show the highly regular arrangement of atoms that forms a continuous pattern in three-dimensional space. The text evaluates the limitations and benefits of using the different types of radiation sources, whether these are X-rays, neutrons, or electrons. Part II is a collection of reprints discussing the development of techniques that includes a modification of the Bragg method, which is a method of X-ray crystal analysis. One paper presents an improved numerical method of two-dimensional Fourier synthesis for crystals. This method uses a greatly reduced process of arrangement of sets of figures found in the two-dimensional Fourier series. The book also notes the theoretical considerations and the practical details, and then addresses precautions against possible inclusions of errors in this method. The text deals as well with the magnetic scattering of neutrons, and one paper presents a simple method of gathering information about the magnetic moment of the neutron besides the traditional Stern-Gerlach method. Nuclear scientists and physicists, atomic researchers, and nuclear engineers will greatly appreciate the book.

Aperiodic Order: Volume 1, A Mathematical Invitation

Aperiodic Order: Volume 1, A Mathematical Invitation PDF Author: Michael Baake
Publisher: Cambridge University Press
ISBN: 1316184382
Category : Mathematics
Languages : en
Pages : 548

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Book Description
Quasicrystals are non-periodic solids that were discovered in 1982 by Dan Shechtman, Nobel Prize Laureate in Chemistry 2011. The underlying mathematics, known as the theory of aperiodic order, is the subject of this comprehensive multi-volume series. This first volume provides a graduate-level introduction to the many facets of this relatively new area of mathematics. Special attention is given to methods from algebra, discrete geometry and harmonic analysis, while the main focus is on topics motivated by physics and crystallography. In particular, the authors provide a systematic exposition of the mathematical theory of kinematic diffraction. Numerous illustrations and worked-out examples help the reader to bridge the gap between theory and application. The authors also point to more advanced topics to show how the theory interacts with other areas of pure and applied mathematics.

Protein Structure

Protein Structure PDF Author: Max F. Perutz
Publisher: W.H. Freeman
ISBN:
Category : Pathology, Molecular
Languages : en
Pages : 360

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Book Description
Explores what use can be made of the solution of over 300 protein structures that have now been determined in atomic detail and discusses the effect of this in medicine. Perutz explains how X-ray crystallographic studies have led to new insights into disease and approaches to treatment.

Incommensurate Crystallography

Incommensurate Crystallography PDF Author: Sander Van Smaalen
Publisher: OUP Oxford
ISBN: 0191524786
Category : Science
Languages : en
Pages : 284

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Book Description
For many years it was believed that translational symmetry would be the fundamental property of crystal structures of natural and synthetic compounds. It is now recognised that many compounds crystallise without translational symmetry of their atomic structures. "Incommensurate Crystallography" gives a comprehensive account of the superspace theory for the description of crystal structures and symmetries of these incommensurately modulated crystals and incommensurate composite crystals. It thus provides the necessary background for quantitative analysis of incommensurate crystals by methods in Solid State Chemistry and Solid State Physics. The second half of "Incommensurate Crystallography" is devoted to crystallographic methods of structural analysis of incommensurate compounds. Thorough accounts are given of the diffraction by incommensurate crystals, the choice of parameters in structure refinements, and the use of superspace in analysing crystal structures. The presentation of methods of structure determination includes modern methods like the Maximum Entropy Method and Charge Flipping.

Electron-Molecule Collisions

Electron-Molecule Collisions PDF Author: Isao Shimamura
Publisher: Springer Science & Business Media
ISBN: 1461323576
Category : Science
Languages : en
Pages : 578

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Book Description
Scattering phenomena play an important role in modern physics. Many significant discoveries have been made through collision experiments. Amongst diverse kinds of collision systems, this book sheds light on the collision of an electron with a molecule. The electron-molecule collision provides a basic scattering problem. It is scattering by a nonspherical, multicentered composite particle with its centers having degrees of freedom of motion. The molecule can even disintegrate, Le., dissociate or ionize into fragments, some or all of which may also be molecules. Although it is a difficult problem, the recent theoretical, experimental, and computational progress has been so significant as to warrant publication of a book that specializes in this field. The progress owes partly to technical develop ments in measurements and computations. No less important has been the great and continuing stimulus from such fields of application as astrophysics, the physics of the earth's upper atmosphere, laser physics, radiation physics, the physics of gas discharges, magnetohydrodynamic power generation, and so on. This book aims at introducing the reader to the problem of electron molecule collisions, elucidating the physics behind the phenomena, and review ing, to some extent, up-to-date important results. This book should be appropri ate for graduate reading in physics and chemistry. We also believe that investi gators in atomic and molecular physics will benefit much from this book.

Working with Children in the Early Years

Working with Children in the Early Years PDF Author: Carrie Cable
Publisher: Routledge
ISBN: 1136034625
Category : Education
Languages : en
Pages : 297

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Book Description
Working with Children in the Early Years is an accessible introduction to early years theories, policy and practice, offering practitioners in a diverse range of settings the opportunity to develop their knowledge, understanding and skills for working with young children. This fully updated second edition builds on new government agendas and interests in supporting quality provision for young children and their families. Bringing together current research and thinking in a broad range of areas, it covers: the diversity of practitioner roles and multi-agency working working with families listening to children observing and assessing developing professional roles health and well being curriculum and pedagogy the importance of play and learning in the early years All contributions are strongly practical and underpinned by relevant theory, and will support students and practitioners studying in the field of early years and early childhood studies as well as those aiming to achieve Early Years Professional Status. The book will also appeal to training providers, equipping them with a valuable and unique source to support a range of early years courses.