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Books > Science & Mathematics > Physics > Applied physics & special topics > Biophysics
The volume that you have before you is the result of a growing
realization that fluctuations in nonequilibrium systems playa much
more important role than was 1 first believed. It has become clear
that in nonequilibrium systems noise plays an active, one might
even say a creative, role in processes involving self-organization,
pattern formation, and coherence, as well as in biological
information processing, energy transduction, and functionality. Now
is not the time for a comprehensive summary of these new ideas, and
I am certainly not the person to attempt such a thing. Rather, this
short introductory essay (and the book as a whole) is an attempt to
describe where we are at present and how the viewpoint that has
evolved in the last decade or so differs from those of past
decades. Fluctuations arise either because of the coupling of a
particular system to an ex ternal unknown or "unknowable" system or
because the particular description we are using is only a
coarse-grained description which on some level is an approxima
tion. We describe the unpredictable and random deviations from our
deterministic equations of motion as noise or fluctuations. A
nonequilibrium system is one in which there is a net flow of
energy. There are, as I see it, four basic levels of
sophistication, or paradigms, con cerning fluctuations in nature.
At the lowest level of sophistication, there is an implicit
assumption that noise is negligible: the deterministic paradigm."
Connecting past, present, and future instrument development and
use, Biocalorimetry: Foundations and Contemporary Approaches
explores biocalorimetry's history, fundamentals, methodologies, and
applications. Some of the most prominent calorimeter developers and
users share invaluable personal accounts of discovery, discussing
innovative techniques as well as special and original applications.
Wide in scope, the book also covers calorimetry use on membranes,
nucleic acids, and proteins and addresses both thermodynamics and
kinetics. The book begins with a look at the historical development
of calorimeters needed for biological research. It then describes
advanced approaches that use high-quality commercial calorimeters
to study biochemical and other biological processes. It also shows
how novel experimental designs and data analysis procedures are
applied to proteins, DNA, membranes, and living matter.
From quantum theory to statistical mechanics, the methodologies of
physics are often used to explain some of life's most complex
biological problems. Exploring this challenging yet fascinating
area of study, Molecular and Cellular Biophysics covers both
molecular and cellular structures as well as the biophysical
processes that occur in these structures. Designed for advanced
undergraduate and beginning graduate students in biophysics
courses, this textbook features a quantitative approach that avoids
being too abstract in its presentation. Logically organized from
small-scale (molecular) to large-scale (cellular) systems, the text
first defines life, discussing the scientific controversies between
mechanists and vitalists, the characteristics of living things, and
the evolution of life. It then delves into molecular structures,
including nucleic acids, DNA, RNA, interatomic interactions, and
hydrogen bonds. After looking at these smaller systems, the author
probes the larger cellular structures. He examines the cytoplasm,
the cytoskeleton, chromosomes, mitochondria, motor proteins, and
more. The book concludes with discussions on biophysical processes,
including oxidative phosphorylation, diffusion, bioenergetics,
conformational transitions in proteins, vesicle transport,
subcellular structure formation, and cell division.
Macromolecules in the body form noncovalent associations, such as
DNA-protein or protein-protein complexes, that control and regulate
numerous cellular functions. Understanding how changes in the
concentration and conformation of these macromolecules can trigger
physiological responses is essential for researchers developing
drug therapies to treat diseases affected by these imbalances.
Introduction to Macromolecular Binding Equilibria gives students in
medicinal chemistry, pharmaceuticals, and bioengineering the
necessary background in biophysical chemistry for research
applications in drug discovery and development. Building upon a
fundamental knowledge of calculus and physical chemistry, this
compact, graduate-level text prepares students for advanced work in
solution thermodynamics and binding phenomena and applying methods
in this book to their own research. This book describes the
underlying theory of binding phenomena and explains how to apply
the binding polynomial approach for building models and
interpreting data. It also covers practical considerations for
setting up binding experiments and describes how to obtain true
thermodynamic isotherms unbiased by model assumption via model-free
analysis of binding data.
Nuclear physics is an exciting, broadly faceted field. It spans
a wide range of topics, reaching from nuclear structure physics to
high-energy physics, astrophysics and medical physics (heavy ion
tumor therapy). New developments are presented in this volume and
the
status of research is reviewed. A major focus is put on nuclear
structure physics, dealing with superheavy elements and with
various forms of exotic nuclei: strange nuclei, very neutron rich
nuclei, nuclei of antimatter. Also quantum electrodynamics of
strong fields is addressed, which is linked to the occurrence of
giant nuclear systems in, e.g., U+U collisions. At high energies
nuclear physics joins with elementary particle physics. Various
chapters address the theory of
elementary matter at high densities and temperature, in particular
the quark gluon plasma which is predicted by quantum chromodynamics
(QCD) to occur in high-energy heavy ion collisions. In the field of
nuclear
astrophysics, the properties of neutron stars and quark stars are
discussed. A topic which transcends nuclear physics is discussed in
two chapters: The proposed pseudo-complex extension of Einstein's
General Relativity leads to the prediction that there are no
black
holes and that big bang cosmology has to be revised. Finally, the
interdisciplinary nature of this volume is further accentuated by
chapters on protein folding and on magnetoreception in birds and
many other animals."
Get Insight on the Function of Supercomplexes in Biological Systems
Redox Proteins in Supercomplexes and Signalosomes is one of the
first books to explore the key role played by redox proteins and
their interaction network in a wide range of essential cellular
processes in all domains of life. The book explains how the
mitochondrial respiratory chain is dynamically organized in
supercomplexes even under physiological conditions. It also
addresses the impact of supercomplex assembly on mitochondrial
morphology, physiology, and biogenesis to shed light on the
molecular mechanisms of pathological situations, including aging.
Discover the Connection between Bioenergetic Supercomplexes and
Signalosomes Compiling state-of-the-art research from leading
practitioners in the field, this book gives you guidance on dealing
with these biological systems in your investigations. The book
shows that supercomplexes and signalosomes provide the link between
reductive and systems biology, which enables us to understand how
the molecular properties of individual macromolecular components
trigger cellular function.
Polymer translocation occurs in many biological and
biotechnological phenomena where electrically charged polymer
molecules move through narrow spaces in crowded environments.
Unraveling the rich phenomenology of polymer translocation requires
a grasp of modern concepts of polymer physics and polyelectrolyte
behavior. Polymer Translocation discusses universal features of
polymer translocations and summarizes the key concepts of
polyelectrolyte structures, electrolyte solutions, ionic flow,
mobility of charged macromolecules, polymer capture by pores, and
threading of macromolecules through pores. With approximately 150
illustrations and 850 equations, the book: Avoids heavy mathematics
Uses examples to illustrate the richness of the phenomenon
Introduces the entropic barrier idea behind polymer translocation
Outlines conceptual components necessary for a molecular
understanding of polymer translocation Provides mathematical
formulas for the various quantities pertinent to polymer
translocation The challenge in understanding the complex behavior
of translocation of polyelectrolyte molecules arises from three
long-range forces due to chain connectivity, electrostatic
interactions, and hydrodynamic interactions. Polymer Translocation
provides an overview of fundamentals, established experimental
facts, and important concepts necessary to understand polymer
translocation. Readers will gain detailed strategies for applying
these concepts and formulas to the design of new experiments.
This book reports on advanced theories and methods in three related
fields of research: applied physics, system science and computers.
It is organized in two main parts, the first of which covers
applied physics topics, including lasers and accelerators;
condensed matter, soft matter and materials science; nanoscience
and quantum engineering; atomic, molecular, optical and plasma
physics; as well as nuclear and high-energy particle physics. It
also addresses astrophysics, gravitation, earth and environmental
science, as well as medical and biological physics. The second part
focuses on advances in system science and computers, exploring
automatic circuit control, power systems, computer communication,
fluid mechanics, simulation and modeling, software engineering,
data structures and applications of artificial intelligence among
other areas. Offering a collection of contributions presented at
the 1st International Conference on Applied Physics, System Science
and Computers (APSAC 2016), the book bridges the gap between
applied physics and electrical engineering. It not only to presents
new methods, but also promotes collaborations between different
communities working on related topics at the interface between
physics and engineering, with a special focus on communication,
data modeling and visualization, quantum information, applied
mechanics as well as bio and geophysics.
This book mainly focuses on key aspects of biomembranes that have
emerged over the past 15 years. It covers static and dynamic
descriptions, as well as modeling for membrane organization and
shape at the local and global (at the cell level) scale. It also
discusses several new developments in non-equilibrium aspects that
have not yet been covered elsewhere. Biological membranes are the
seat of interactions between cells and the rest of the world, and
internally, they are at the core of complex dynamic reorganizations
and chemical reactions. Despite the long tradition of membrane
research in biophysics, the physics of cell membranes as well as of
biomimetic or synthetic membranes is a rapidly developing field.
Though successful books have already been published on this topic
over the past decades, none include the most recent advances.
Additionally, in this domain, the traditional distinction between
biological and physical approaches tends to blur. This book gathers
the most recent advances in this area, and will benefit biologists
and physicists alike.
This book gives physical chemists a broader view of potential
biological applications of their techniques for the study of
nucleic acids in the gas phase. It provides organic chemists,
biophysicists, and pharmacologists with an introduction to new
techniques they can use to find the answers to yet unsolved
questions. Laboratory sciences have bloomed with a variety of
techniques to decipher the properties of the molecules of life.
This volume introduces techniques used to investigate the
properties of nucleic acids in the absence of solvent. It
highlights the specificities pertaining to the studies of nucleic
acids, although some of the techniques can similarly be applied to
the study of other biomolecules, like proteins. The first part of
the book introduces the techniques, from the transfer of nucleic
acids to the gas-phase, to their detailed physico-chemical
investigation. Each chapter is devoted to a specific molecular
property, and illustrates how various approaches (experimental and
theoretical) can be combined for the interpretation.
The second part of the book is devoted to applying the gas-phase
approaches to solve specific questions related to the biophysics,
biochemistry or pharmacology of nucleic acids.
Over the past decade, numerous books have attempted to explain ions
in aqueous solutions in relation to biophysical phenomena. Ions in
Water and Biophysical Implications, from Chaos to Cosmos offers a
physicochemical point of view of the spread of this matter and
suggests innovative solutions that will challenge the biophysics
research establishment. Starting with a throughout discussion of
the properties of liquid water, in particular as a structured
liquid with an extensive hydrogen bonded structure, the book
examines water as a solvent for gases, non-electrolytes, and
electrolytes and reviews the properties, sizes and thermodynamics
of isolated and aqueous ions, as well as their interactions,
including those of polyelectrolytes. The effects of ions on water
structure, including those on solvent dynamics and certain
thermodynamic quantities, are presented. This volume investigates
water surfaces with its vapour, with another liquid, and with a
solid, as well as the effects of solutes, including simple ions and
the water-miscible non-electrolytes. Surfaces are relevant to
biomolecular and colloidal systems and the book discusses briefly
surfactants, micelles and vesicles. Finally, the book concludes
with a review of the various biophysical implications involving
chaotropic and kosmotropic ions in homogeneous solutions and the
Hofmeister series for ions concerning biomolecular and colloidal
systems and some aspects of protein hydration and K+/Na+
selectivity in ion channels. Ions in Water and Biophysical
Implications, from Chaos to Cosmos will appeal to physical
chemists, biophysicists, biochemists, as well as to all students
and researchers involved in the study of aqueous solutions.
Three-volumes book "Handbook of II-VI Semiconductor-Based Sensors
and Radiation Detectors" is the first to cover both chemical
sensors and biosensors and all types of photodetectors and
radiation detectors based on II-VI semiconductors. It contains a
comprehensive and detailed analysis of all aspects of the
application of II-VI semiconductors in these devices. The second
volume "Photodetectors" of a three-volume set, focus on the
consideration of all types of optical detectors, including IR
detectors, visible and UV photodetectors. This consideration
includes both the fundamentals of the operation of detectors and
the peculiarities of their manufacture and use. In particular,
describes numerous strategies for their fabrication and
characterization. An analysis of new trends in development of II-VI
semiconductors-based photodetectors such as graphene/HgCdTe-,
nanowire- and quantum dot-based photodetectors, as well as
solution-processed, multicolor, flexible and self-powered
photodetectors, are also given.
This book explores the remarkable information correspondences and
probability structures of proteins. Correspondences are pervasive
in biochemistry and bioinformatics: proteins share homologies,
folding patterns, and mechanisms. Probability structures are just
as paramount: folded state graphics reflect Angstrom-scale maps of
electron density. The author explores protein sequences (primary
structures), both individually and in sets (systems) with the help
of probability and information tools. This perspective will enhance
the reader's knowledge of how an important class of molecules is
designed and put to task in natural systems, and how we can
approach class members in hands-on ways.
This book is a comprehensive summary of 50 years of research from
theoretical predictions to experimental confirmation of the
manifestation of spin exchange in EPR spectroscopy. The author
unfolds the details of comprehensive state of the art of
theoretical calculations, which have been proven to become the core
of the paradigm shift in spin exchange and set the direction for
the future of spin exchange research. The book refers to important
experimental data that confirms the theory. It describes the modern
protocol for determining the bi-molecular spin exchange rate from
the EPR spectra, which will be especially interesting for
experimentalists. Given its scope, the book will benefit all
researchers engaged in theory and experiments in the area of spin
exchange and its manifestations in EPR spectroscopy, where many
remarkable applications of the spin probe have been developed.
Lasers are progressively more used as versatile tools for
fabrication purposes. The wide range of available powers,
wavelengths, operation modes, repetition rates etc. facilitate the
processing of a large spectrum of materials at exceptional
precision and quality. Hence, manifold methods were established in
the past and novel methods are continuously under development.
Biomimetics, the translation from nature-inspired principles to
technical applications, is strongly multidisciplinary. This field
offers intrinsically a wide scope of applications for laser based
methods regarding structuring and modification of materials. This
book is dedicated to laser fabrication methods in biomimetics. It
introduces both, a laser technology as well as an application
focused approach. The book covers the most important laser
lithographic methods and various biomimetics application scenarios
ranging from coatings and biotechnology to construction, medical
applications and photonics.
This lecture volume aims to give students and researchers in this
rapidly expanding field of biophotonics an interdisciplinary
perspective. Among the primary topics are ultrahigh resolution
microscopy, particle tracking, photon correlation spectroscopy, and
nonlinear optical methods as used in biological and biomedical
research, with a focus on current applications in biophysics and
biomedicine.
Plasma Medical Science describes the progress that has been made in
the field over the past five years, illustrating what readers must
know to be successful. As non-thermal, atmospheric pressure plasma
has been applied for a wide variety of medical fields, including
wound healing, blood coagulation, and cancer therapy, this book is
a timely resource on the topics discussed.
Since most therapeutic efforts have been predominantly focused on
pharmaceuticals that target proteins, there is an unmet need to
develop drugs that intercept cellular pathways that critically
involve nucleic acids. Progress in the discovery of nucleic acid
binding drugs naturally relies on the availability of analytical
methods that assess the efficacy and nature of interactions between
nucleic acids and their putative ligands. This progress can benefit
tremendously from new methods that probe nucleic acid/ligand
interactions both rapidly and quantitatively. A variety of novel
methods for these studies have emerged in recent years, and Methods
for Studying DNA/Drug Interactions highlights new and
non-conventional methods for exploring nucleic acid/ligand
interactions. Designed to present drug-developing companies with a
survey of possible future techniques, the book compares their
drawbacks and advantages with respect to commonly used tools.
Perhaps more importantly, this book was written to inspire young
scientists to continue to advance these methods into fruition,
especially in light of current capabilities for assay
miniaturization and enhanced sensitivity using microfluidics and
nanomaterials.
Molecular recognition, also known as biorecognition, is the heart
of all biological interactions. Originating from protein stretching
experiments, dynamic force spectroscopy (DFS) allows for the
extraction of detailed information on the unbinding process of
biomolecular complexes. It is becoming progressively more important
in biochemical studies and is finding wider applications in areas
such as biophysics and polymer science. In six chapters, Dynamic
Force Spectroscopy and Biomolecular Recognition covers the most
recent ideas and advances in the field of DFS applied to
biorecognition: Chapter 1: Reviews the basic and novel aspects of
biorecognition and discusses the emerging capabilities of
single-molecule techniques to disclose kinetic properties and
molecular mechanisms usually hidden in bulk measurements Chapter 2:
Describes the basic principle of atomic force microsocopy (AFM) and
DFS, with particular attention to instrumental and theoretical
aspects more strictly related to the study of biomolecules Chapter
3: Overviews the theoretical background in which experimental data
taken in nonequilibrum measurements of biomolecular unbinding
forces are extrapolated to equilibrium conditions Chapter 4:
Reviews the most common and efficient strategies adopted in DFS
experiments to immobilize the interacting biomolecules to the AFM
tip and to the substrate Chapter 5: Presents and discusses the most
representative aspects related to the analysis of DFS data and the
challenges of integrating well-defined criteria to calibrate data
in automatic routinary procedures Chapter 6: Overviews the most
relevant DFS applications to study biorecognition processes,
including the biotin/avidin pair, and selected results on various
biological complexes, including antigen/antibody, proteins/DNA, and
complexes involved in adhesion processes Chapter 7: Summarizes the
main results obtained by DFS applied to study biorecognition
processes with forthcoming theoretical and experimental advances
Although DFS is a widespread, worldwide technique, no books focused
on this subject have been available until now. Dynamic Force
Spectroscopy and Biomolecular Recognition provides the state of the
art of experimental data analysis and theoretical procedures,
making it a useful tool for researchers applying DFS to study
biorecognition processes.
The physical-chemical properties of the omega-3 fatty acid DHA
(docosahexaenoic acid) enable it to facilitate rapid biochemical
processes in the membrane. This effect has numerous benefits,
including those involved in the growth of bacteria, rapid energy
generation, human vision, brain impulse, and photosynthesis, to
name a few. Yet DHA also carries risks that can lead to cellular
death and disease. Omega-3 Fatty Acids and the DHA Principle
explores the roles of omega-3 fatty acids in cellular membranes
ranging from human neurons and swimming sperm to deep sea bacteria,
and develops a principle by which to assess their benefits and
risks. The DHA Principle states that the blending of lipids to form
cellular membranes is evolutionarily-honed to maximize benefit
while minimizing risk, and that a complex blending code involving
conformational dynamics, energy stress, energy yield, and chemical
stability underlies all cellular membranes. This book lays the
groundwork to understanding this code. It examines the evolution of
DHA and the membrane and explores the general properties of
omega-3s and other membrane lipids. It then focuses on cellular
biology before shifting to a practical discussion on applications.
The authors discuss the DHA Principle as applied to petroleum
degradation, winemaking, global warming, molecular farming, aging,
neurodegenerative diseases, and the prevention of colon cancer.
Reflecting the increased public interest that has emerged over the
years, this volume uses an integrative approach to explain the
complex roles of omega-3s in the membrane. Incorporating principles
from chemistry, cellular biology, evolution, and ecology, this work
gives researchers in a variety of fields the building blocks to
stimulate further study.
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