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Architecture is based upon the misconception that strong is stable, both in sense of energy and structure, as an unchanged state of microclimate would require more material or insulation. Trans-structures are the opposite: building elements with the response-ability to change according to external conditions in order to maintain stability in terms of structure and/or energy. In this type of building, any effect (structural or thermal load) would generate an immediate affect (a response of the structure). Energy and weight would be counteracted and on a total scale, change would not occur. Such buildings are always in transition from one state to another, unlike conventional structures.
From the beginnings of modern chemistry, molecular structure has been a lively area of research and speculation. For more than half a century spectroscopy and other methods have been available to characterize the structures and shapes of molecules, particularly those that are rigid. However, most molecules are at least to some degree non-rigid and this non-rigidity plays an important role in such diverse areas as biological activity, energy transfer, and chemical reactivity. In addition, the large-amplitude vibrations present in non-rigid molecules give rise to unusual low-energy vibrational level patterns which have a dramatic effect on the thermodynamic properties of these systems. Only in recent years has a coherent picture of the energetics and dynamics of the conformational changes inherent in non-rigid (and semi-rigid) molecules begun to emerge. Advances have been made in a number of different experimental areas: vibrational (infrared and Raman) spectroscopy, rotational (microwave) spectroscopy, electron diffraction, and, most recently, laser techniques probing both the ground and excited electronic states. Theoretically, the proliferation of powerful computers coupled with scientific insight has allowed both empirical and ab initio methods to increase our understanding of the forces responsible for the structures and energies of non-rigid systems. The development of theory (group theoretical methods and potential energy surfaces) to understand the unique characteristics of the spectra of these floppy molecules has also been necessary to reach our present level of understanding. The thirty chapters in this volume contributed by the key speakers at the Workshop are divided over the various areas. Both vibrational and rotational spectroscopy have been effective at determining the potential energy surfaces for non-rigid molecules, often in a complementary manner. Recent laser fluorescence work has extended these types of studies to electronic excited states. Electronic diffraction methods provide radial distribution functions from which both molecular structures and compositions of conformational mixtures can be found. Ab initio calculations have progressed substantially over the past few years, and, when carried out at a sufficiently high level, can accurately reproduce (or predict ahead of time) experimental findings. Much of the controversy of the ARW related to the question of when an ab initio is reliable. Since the computer programs are readily available, many poor calculations have been carried out. However, excellent results can be obtained from computations when properly done. A similar situation exists for experimental analyses. The complexities of non-rigid molecules are many, but major strides have been taken to understand their structures and conformational processes.
A passionate conversation among the best minds in transpersonal studies about the ideas of Ken Wilber, the prominent contemporary thinker whose first book, The Spectrum of Consciousness, published by Quest in 1977, launched the transpersonal psychology movement. Transpersonal thinkers taking part in this dynamic dialogue combine Eastern and Western spirituality with mainstream fields such as psychology, medicine, physics, and ecology to map the human drive toward Spirit. Contributors include best-selling authors Jack Kornfield (A Path with Heart), Joseph Goldstein (Insight Meditation), Michael Murphy (The Future of the Body), Stanislav Grof (The Holotropic Mind), and Jeanne Achterberg (Rituals of Healing). Wilber's spirited response to each probing assessment of his ideas and the authors' rebuttals give readers ringside seats at an engaging sparring match among intellectual and spiritual superstars.
Advances in Molecular Structure Research
This textbook summarizes physical aspects of materials at atomic and molecular level, and discusses micro-structure of metals, alloys, ceramics and polymers. It further explains point defects, dislocations and surface imperfections, and the motions of atoms and molecular in solid state. As first volume in the set, it prepares students for further studies on phases and transitions which are discussed in the next volume.
Anyone seeking a deeper understanding of human spirituality will find something of value in Michael Washburn's new book. Drawing on a rich variety of psychoanalytic, Jungian, and existential-phenomenological sources and on both Western and Asian spiritual texts, Embodied Spirituality in a Sacred World provides a theoretical foundation for the idea that human development follows a spiral path. Washburn shows that ego development early in life requires us to turn our backs on original sources of our existence and, therefore, that spiritual development later in life requires us to spiral back to these sources on the way to whole-psyche integration. He elucidates the underlying causes and pivotal events that set development on its spiral course and traces six major dimensions of experience as they unfold along the spiral path: the unconscious, the energy system, the ego system, the perceived other, the experiential body, and the life-world. In providing a theoretical foundation for the idea of the spiral path, Washburn defends the idea against its critics and helps explain why the idea has been compelling to so many people in diverse traditions.
Electrical Interactions in Molecular Biophysics: An Introduction deals with electrical interactions between biomolecules and therefore encompasses two disciplines, molecular biology and physics. The emphasis is on the electrical nature of biochemical or molecular biological reactions. The principles of electrostatics are used to explain some of the basic units of structure on a molecular level. Comprised of nine chapters, this book opens with an overview of the concepts and structures of biochemistry, with particular reference to different structural biochemical groups and how they are used as building blocks in forming molecules. The following chapters discuss the basics of elementary electrostatics; dielectric constants and dipoles; the dipole moments of biomolecules; van der Waals forces; and Debye-Huckel theory. Water and water structure are also considered from a physical standpoint. The final chapter is devoted to experimental techniques that rely upon the electrical properties of biomolecules and explains what types of information can be obtained from each experimental form. This monograph will be of interest to students and practitioners in biochemistry, molecular biology, biophysics, or microbiology.
Here, the authors introduce readers to solving molecular structure elucidation problems using the expert system ACD/Structure Elucidator. They explain in detail the concepts of the Computer-Assisted Structure Elucidation (CASE) approach and point out the crucial role of understanding the axiomatic nature of the data used to deduce the structure. Aspects covered include the main blocks of the expert system and essential features of the mathematical algorithms used. Graduate and PhD students as well as practicing chemists are provided with a detailed explanation of the various practical approaches depending on available spectral data peculiarities and the complexity of the unknown structure. This is supported by a large number of real-world completed examples, most of which are related to the structure elucidation of natural product molecules containing unusual skeletons. Dedicated software and further supplementary material are available at www.acdlabs.com/TeachingSE.
During the past thirty years considerable efforts have been made to design the synthesis and the study of molecular semiconductors. Molecular semiconductors - and more generally molecular materials - involve interactions between individual subunits which can be separately synthesized. Organic and metallo-organic derivatives are the basis of most of the molecular materials. A survey of the literature on molecular semiconductors leaves one rather confused. It does seem to be very difficult to correlate the molecular structure of these semiconductors with their experimental electrical properties. For inorganic materials a simple definition delimits a fairly homogeneous family. If an inorganic material has a conductivity intermediate between that of an 12 1 1 3 1 1 insulator « 10- n- cm- ) and that of a metal (> 10 n- cm- ), then it is a semiconductor and will exhibit the characteristic properties of this family, such as junction formation, photoconductivity, and the photovoltaic effect. For molecular compounds, such simplicity is certainly not the case. A huge number of molecular and macromolecular systems have been described which possess an intermediate conductivity. However, the various attempts which have been made to rationalize their properties have, more often than not, failed. Even very basic electrical properties such as the mechanism of the charge carrier formation or the nature and the density ofthe dopants are not known in detail. The study of molecular semiconductor junctions is very probably the most powerful approach to shed light on these problems.
Vol. 1: Semiconductors;Vol. 2: Semiconductors Devices;Vol. 3: High-Tc Superconductors and Organic Conductors; Vol. 4: Ferroelectrics and Dielectrics; Vol. 5: Chalcogenide Glasses and Sol-Gel Materials; Vol. 6 Nanostructured Materials; Vol. 7: Liquid Crystals, Display and Laser Materials; Vol. 8: Conducting Polymers; Vol. 9: Nonlinear Optical Materials; Volume 10: Light-Emitting Diodes, Lithium Batteries and Polymer Devices