Author: Chris Moriarty
Publisher: Spectra
ISBN: 0553586246
Category : Fiction
Languages : en
Pages : 642
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Book Description
From a stunning new voice in hard science fiction comes the thrilling story of one woman’s quest to wrest truth from chaos, love from violence, and reality from illusion in a post-human universe of emergent AIs, genetic constructs, and illegal wetware. . . . UN Peacekeeper Major Catherine Li has made thirty-seven faster-than-light jumps in her lifetime—and has probably forgotten more than most people remember. But that’s what backup hard drives are for. And Li should know; she’s been hacking her memory for fifteen years in order to pass as human. But no memory upgrade can prepare Li for what she finds on Compson’s World: a mining colony she once called home and to which she is sent after a botched raid puts her on the bad side of the powers that be. A dead physicist who just happens to be her cloned twin. A missing dataset that could change the interstellar balance of power and turn a cold war hot. And a mining “accident” that is starting to look more and more like murder. . . . Suddenly Li is chasing a killer in an alien world miles underground where everyone has a secret. And one wrong turn in streamspace, one misstep in the dark alleys of blackmarket tech and interstellar espionage, one risky hookup with an AI could literally blow her mind.
Author: Marcel Swart
Publisher: John Wiley & Sons
ISBN: 1118898303
Category : Science
Languages : en
Pages : 472
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Book Description
It has long been recognized that metal spin states play a central role in the reactivity of important biomolecules, in industrial catalysis and in spin crossover compounds. As the fields of inorganic chemistry and catalysis move towards the use of cheap, non-toxic first row transition metals, it is essential to understand the important role of spin states in influencing molecular structure, bonding and reactivity. Spin States in Biochemistry and Inorganic Chemistry provides a complete picture on the importance of spin states for reactivity in biochemistry and inorganic chemistry, presenting both theoretical and experimental perspectives. The successes and pitfalls of theoretical methods such as DFT, ligand-field theory and coupled cluster theory are discussed, and these methods are applied in studies throughout the book. Important spectroscopic techniques to determine spin states in transition metal complexes and proteins are explained, and the use of NMR for the analysis of spin densities is described. Topics covered include: DFT and ab initio wavefunction approaches to spin states Experimental techniques for determining spin states Molecular discovery in spin crossover Multiple spin state scenarios in organometallic reactivity and gas phase reactions Transition-metal complexes involving redox non-innocent ligands Polynuclear iron sulfur clusters Molecular magnetism NMR analysis of spin densities This book is a valuable reference for researchers working in bioinorganic and inorganic chemistry, computational chemistry, organometallic chemistry, catalysis, spin-crossover materials, materials science, biophysics and pharmaceutical chemistry.
Author: Chris Moriarty
Publisher: Spectra
ISBN: 0553586254
Category : Fiction
Languages : en
Pages : 610
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Book Description
In this stunning follow-up to the critically acclaimed novel Spin State, Chris Moriarty depicts a grim future in which the final frontier may well be extinction. For as far-flung planets are terraformed and Earth’s age-old conflicts are contracted out to AIs, humanity is losing the only war that counts: the war for survival. Call Arkady a clone with a conscience. Or call him a traitor. A member of the space-faring Syndicates, Arkady has defected to Israel with a hot commodity: a genetic weapon powerful enough to wipe out humanity. But Israel’s not buying it. They’re selling it—and Arkady—to the highest bidder. As the auction heats up, the Artificial Life Emancipation Front sends in Major Catherine Li. Already drummed out of the Peacekeepers for “war crimes,” Li has now literally hooked up with an AI who has lived many lifetimes and shunted through many bodies. And while they each have their own definition of victory, together they have only one chance at survival. . . .
Author: Marcel Swart
Publisher: John Wiley & Sons
ISBN: 1118898311
Category : Science
Languages : en
Pages : 500
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Book Description
It has long been recognized that metal spin states play a central role in the reactivity of important biomolecules, in industrial catalysis and in spin crossover compounds. As the fields of inorganic chemistry and catalysis move towards the use of cheap, non-toxic first row transition metals, it is essential to understand the important role of spin states in influencing molecular structure, bonding and reactivity. Spin States in Biochemistry and Inorganic Chemistry provides a complete picture on the importance of spin states for reactivity in biochemistry and inorganic chemistry, presenting both theoretical and experimental perspectives. The successes and pitfalls of theoretical methods such as DFT, ligand-field theory and coupled cluster theory are discussed, and these methods are applied in studies throughout the book. Important spectroscopic techniques to determine spin states in transition metal complexes and proteins are explained, and the use of NMR for the analysis of spin densities is described. Topics covered include: DFT and ab initio wavefunction approaches to spin states Experimental techniques for determining spin states Molecular discovery in spin crossover Multiple spin state scenarios in organometallic reactivity and gas phase reactions Transition-metal complexes involving redox non-innocent ligands Polynuclear iron sulfur clusters Molecular magnetism NMR analysis of spin densities This book is a valuable reference for researchers working in bioinorganic and inorganic chemistry, computational chemistry, organometallic chemistry, catalysis, spin-crossover materials, materials science, biophysics and pharmaceutical chemistry.
Author: Jonathan Bain
Publisher: Oxford University Press
ISBN: 0191044555
Category : Science
Languages : en
Pages : 208
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Book Description
This book seeks to answer the question "What explains CPT invariance and the spin-statistics connection?" These properties play foundational roles in relativistic quantum field theories (RQFTs), are supported by high-precision experiments, and figure into explanations of a wide range of phenomena, from antimatter, to the periodic table of the elements, to superconductors and superfluids. They can be derived in RQFTs by means of the famous CPT and Spin-Statistics theorems; but, the author argues, these theorems cannot be said to explain these properties, at least under standard philosophical accounts of scientific explanation. This is because there are multiple, in some cases incompatible, ways of deriving these theorems, and, secondly, because the theorems fail for the types of theories that underwrite the empirical evidence: non-relativistic quantum theories, and realistic interacting RQFTs. The goal of this book is to work towards an understanding of CPT invariance and the spin-statistics connection by first providing an analysis of the necessary and sufficient conditions for these properties, and second by advocating a particular account of explanation appropriate for this context.
Author: Mikhail I. Dyakonov
Publisher: Springer
ISBN: 9783642097621
Category : Science
Languages : en
Pages : 0
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Book Description
The purpose of this collective book is to present a non-exhaustive survey of sp- related phenomena in semiconductors with a focus on recent research. In some sense it may be regarded as an updated version of theOpticalOrientation book, which was entirely devoted to spin physics in bulk semiconductors. During the 24 years that have elapsed, we have witnessed, on the one hand, an extraordinary development in the wonderful semiconductor physics in two dim- sions with the accompanying revolutionary applications. On the other hand, during the last maybe 15 years there was a strong revival in the interest in spin phen- ena, in particular in low-dimensional semiconductor structures. While in the 1970s and 1980s the entire world population of researchers in the ?eld never exceeded 20 persons, now it can be counted by the hundreds and the number of publications by the thousands. This explosive growth is stimulated, to a large extent, by the hopes that the electron and/or nuclear spins in a semiconductor will help to accomplish the dream of factorizing large numbers by quantum computing and eventually to develop a new spin-based electronics, or “spintronics”. Whether any of this will happen or not, still remains to be seen. Anyway, these ideas have resulted in a large body of interesting and exciting research, which is a good thing by itself. The ?eld of spin physics in semiconductors is extremely rich and interesting with many spectacular effects in optics and transport.
Author: Giuseppe Pileio
Publisher: Royal Society of Chemistry
ISBN: 1788015681
Category : Medical
Languages : en
Pages : 462
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Book Description
The idea that a long-lived form of spin order, namely singlet order, can be prepared from nuclear spin magnetisation first emerged in 2004. The unusual properties of singlet order–its long lifetime and the fact that it is NMR silent but interconvertible into other forms of NMR active order—make it a ‘smart tag’ that can be used to store information for a long time or through distant space points. It is not unexpected then, that since its first appearance, this idea has caught the attention of research groups interested in exploiting this form of order in different fields of research spanning from biology to materials science and from hyperpolarisation to quantum computing. This first book on the subject gives a thorough description of the various aspects that affect the development of the topic and details the interdisciplinary applications. The book starts with a section dedicated to the basic theories of long-lived spin order and then proceeds with a description of the state-of-the-art experimental techniques developed to manipulate singlet order. It then concludes by covering the generalization of the concept of singlet order by introducing and discussing other forms of long-lived spin order.
Author: Christian Groß
Publisher: Springer Science & Business Media
ISBN: 3642256368
Category : Science
Languages : en
Pages : 123
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Book Description
Interferometry, the most precise measurement technique known today, exploits the wave-like nature of the atoms or photons in the interferometer. As expected from the laws of quantum mechanics, the granular, particle-like features of the individually independent atoms or photons are responsible for the precision limit, the shot noise limit. However this “classical” bound is not fundamental and it is the aim of quantum metrology to overcome it by employing entanglement among the particles. This work reports on the realization of spin-squeezed states suitable for atom interferometry. Spin squeezing was generated on the basis of motional and spin degrees of freedom, whereby the latter allowed the implementation of a full interferometer with quantum-enhanced precision.
Author: Chris Moriarty
Publisher: Spectra
ISBN: 0345526287
Category : Fiction
Languages : en
Pages : 578
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Book Description
Sometimes a ghost of a chance is all you get. Award-winning author Chris Moriarty returns to a dazzling cyber-noir far future in this gritty, high-stakes thriller where the only rule is “Evolve . . . or die.” The Age of Man is ending. The UN’s sprawling interstellar empire is failing as its quantum teleportation network collapses, turning once-viable colonies into doomed island outposts. Humanity’s only hope of survival is the Drift: a mysterious region of space where faster-than-light travel—or something far stranger—seems possible. As mercenaries and pirates flock to the Drift, the cold war between the human-led UN and the clone-dominated Syndicates heats up. Whoever controls the Drift will chart the future course of human evolution—and no one wants to be left behind in a universe where the price of failure is extinction. When the AI called Cohen ventures into the Drift, he dies—allegedly by his own hand—and his consciousness is scattered across the cosmos. Some of his ghosts are still self-aware. Some are insane. And one of them hides a secret worth killing for. Enter Major Catherine Li, Cohen’s human (well, partly human) lover, who embarks on a desperate search to solve the mystery of Cohen’s death—and put him back together. But Li isn’t the only one interested in Cohen’s ghosts. Astrid Avery, a by-the-book UN navy captain, is on the hunt. So is William Llewellyn, a pirate who has one of the ghosts in his head, which is slowly eating him alive. Even the ghosts have their own agendas. And lurking behind them all is a pitiless enemy who will stop at nothing to make sure the dead don’t walk again. Praise for Ghost Spin “Complexity is the watchword here, of thought, idea, narrative, character and plot. . . . Highly rewarding.”—Kirkus Reviews “Rewarding . . . The adaptations humans make to survive in the hostile environments of other worlds, a galaxy teetering on the edge of singularity . . . are genuinely visionary.”—Publishers Weekly “This stand-along ‘spin-off’ offers a compelling tale of adventure/suspense blended with cybernoir and high-tech sf.”—Library Journal “An excellent read: gripping, fast-paced, provocative and handsome.”—Tordotcom “A brilliant mix of space opera, cyberpunk, and just plain great writing, Moriarty’s work is some of the most impressive in science fiction today.”—SFRevu
Author: Malcolm H. Levitt
Publisher: John Wiley & Sons
ISBN: 0470511184
Category : Science
Languages : en
Pages : 767
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Book Description
Spin Dynamics: Basics of Nuclear Magnetic Resonance, Second Edition is a comprehensive and modern introduction which focuses on those essential principles and concepts needed for a thorough understanding of the subject, rather than the practical aspects. The quantum theory of nuclear magnets is presented within a strong physical framework, supported by figures. The book assumes only a basic knowledge of complex numbers and matrices, and provides the reader with numerous worked examples and exercises to encourage understanding. With the explicit aim of carefully developing the subject from the beginning, the text starts with coverage of quarks and nucleons and progresses through to a detailed explanation of several important NMR experiments, including NMR imaging, COSY, NOESY and TROSY. Completely revised and updated, the Second Edition features new material on the properties and distributions of isotopes, chemical shift anisotropy and quadrupolar interactions, Pake patterns, spin echoes, slice selection in NMR imaging, and a complete new chapter on the NMR spectroscopy of quadrupolar nuclei. New appendices have been included on Euler angles, and coherence selection by field gradients. As in the first edition, all material is heavily supported by graphics, much of which is new to this edition. Written for undergraduates and postgraduate students taking a first course in NMR spectroscopy and for those needing an up-to-date account of the subject, this multi-disciplinary book will appeal to chemical, physical, material, life, medical, earth and environmental scientists. The detailed physical insights will also make the book of interest for experienced spectroscopists and NMR researchers. • An accessible and carefully written introduction, designed to help students to fully understand this complex and dynamic subject • Takes a multi-disciplinary approach, focusing on basic principles and concepts rather than the more practical aspects • Presents a strong pedagogical approach throughout, with emphasis placed on individual spins to aid understanding • Includes numerous worked examples, problems, further reading and additional notes Praise from the reviews of the First Edition: "This is an excellent book... that many teachers of NMR spectroscopy will cherish... It deserves to be a ‘classic’ among NMR spectroscopy texts." NMR IN BIOMEDICINE "I strongly recommend this book to everyone...it is probably the best modern comprehensive description of the subject." ANGEWANDTE CHEMIE, INTERNATIONAL EDITION
