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Books > Science & Mathematics > Chemistry > General
Investigation of the structure and function of biological molecules
through spectroscopic methods is a field rich in revealing, clever
techniques and demanding experiments. It is most gratifying to see
that the basic concepts are applied to more and more complex
systems, making feasible the study of the behaviour of whole
systems in relation to molecular disturbances. The analytical
potential of spectroscopy and spectroscopic imaging enables species
identification of bacteria and tissue recognition. Clear
opportunities for in vivo applications become apparent in the
medical field. The methods developed in biophysics start to
generate spin-off in the direction of biotechnology, where in
previous years we have seen this happen for biochemical techniques.
New directions are manifest. Tools are being developed to
investigate the behaviour of single molecules in interaction with
their environment. Individual interactions can now be investigated
and individual molecules in complexes can be visualized. Processes
that were previously unobservable as a result of ensemble averaging
can now be investigated on a single molecule level. Completely new
information with regard to molecular behaviour is obtained in this
way. The insights amaze us and the prospect that this development
will continue is exciting. The 8th European Conference on the
Spectroscopy of Biological Molecules is proud to have contributed
to the dissemination of these new directions. This proceedings book
is an appropriate reflection of the progress obtained so far in the
spectroscopy of biological molecules.
Annual Reports in Computational Chemistry is a new periodical
providing timely and critical reviews of important topics in
computational chemistry as applied to all chemical disciplines.
Topics covered include quantum chemistry, molecular mechanics,
force fields, chemical education, and applications in academic and
industrial settings. Each volume is organized into (thematic)
sections with contributions written by experts. Focusing on the
most recent literature and advances in the field, each article
covers a specific topic of importance to computational chemists.
Annual Reports in Computational Chemistry is a 'must' for
researchers and students wishing to stay up-to-date on current
developments in computational chemistry.
* Broad coverage of computational chemistry and up-to-date
information
* The topics covered include quantum chemistry, molecular
mechanics, force fields, chemical education, and applications in
academic and industrial settings
* Each chapter reviews the most recent literature on a specific
topic of interest to computational chemists
The "Gold Standard" in Biochemistry text books. Biochemistry 4e, is
a modern classic that has been thoroughly revised. Don and Judy
Voet explain biochemical concepts while offering a unified
presentation of life and its variation through evolution. It
incorporates both classical and current research to illustrate the
historical source of much of our biochemical knowledge.
Key Features: Provides botanical descriptions, distribution and
pharmacological investigations of notable medicinal and herbal
plants used to prevent or treat diabetes. Discusses phytochemical
and polyherbal formulations for the management of diabetes and
other related complications. Contains reports on antidiabetic
plants and their potential uses in drug discovery based on their
bioactive molecules.
The object ofthis text is to examine, and elaborate on the meaning
of the established premise that 'taste is a chemical sense.' In
particular, the major effort is directed toward the degree to which
chemical principles apply to phenomena associated with the
inductive (recognition) phase of taste. A second objective is to
describe the structure and properties of compounds with varying
taste that allow decisions to be made with respect to the probable
nature of the recognition chemistry for the different tastes, and
the probable nature of the receptor(s) for those tastes. A final
objective is to include appropriate interdisciplinary observations
that have application to solving problems related to the chemical
nature of taste. Taste is the most easily accessible chemical
structure-biological activity relationship, and taste chemistry
studies, i.e. the chemistry of sweetness, saltiness, sourness, and
bitterness, have application to general biology, physiology, and
pharmacology. Because it involves sensory perception, taste is also
of interest to psychologists, and has application to the food and
agricultural industries. The largest portion of the text is
directed toward sweetness as, due to economic and other factors,
the majority of the scientific studies are concerned with
sweetness. The text begins with a prologue to describe the problems
associated with the study of taste chemistry. Then, there is an
introductory chapter to serve as an overview of the general
interdisciplinary knowledge of the subject. It is followed by a
chapter on the fundamental chemical principles that apply to taste
induction chemistry.
1 2 Prof. Dr. Vladimir Mikhailovitsh Kolodkin, Prof. Dr.-Ing.
Wolfgang Ruck 1 Institute of Natural and Technogenic Disasters,
Udmurt State University, Izhevsk (Russia), 2 Institute of Ecology
and Environmental Chemistry, University Luneburg (Germany) During
the Cold War a whole arsenal of deadly chemical weapons was allowed
to build up on both sides of the ideological divide. Happily, today
the problems are reversed. Expertise is now required in the field
of safe and environment-friendly disposal of chemical weapons and
cleaning up of contaminated sites all around the world, but not
least in the ex-Soviet-led countries. The participants and speakers
to the NATO-Russia advanced research workshop on the "Ecological
Risks Associated with the Destruction of nd th Chemical Weapons,"
hosted by the University of Luneburg on 22 - 26 October, 2003,
therefore, came from many different parts of the world. Of the
eight countries represented at the workshop, two were ex-Eastern-
Block, and six were Western countries. Yet the West was by no means
overrepresented. On the contrary, the Russian expert-speaker
contingent, with 33 participants, did justice to the size of their
country - and to their chemical-weapons problem - and provided the
majority of active participants. In all, there were 57
participants, of which 11 dispatched from the TACIS project "The
development of the chemical weapons" facility at the detached plant
No 4 of OAO Khimprom, Novocheboksarsk."
III . 2 Preparation of synthetic membranes 72 III . 3 Phase
inversion membranes 75 III. 3. 1 Preparation by evaporation 76 III
. 3. 2 Precipitation. from the vapour phase 76 III . 3. 3
Precipitation by controlled evaporation 76 Thermal precipitation 76
III . 3. 4 III . 3. 5 Immersion precipitation 77 Preparation
techniques for immersion precipitation 77 III . 4 Flat membranes 77
III . 4. 1 78 III . 4. 2 Tubular membranes 81 III . 5 Preparation
techniques for composite membranes 82 III. 5. 1 Interfacial
polymerisation Dip-coating 83 III . 5. 2 III . 5. 3 Plasma
polymerisation 86 III . 5. 4 Modification of homogeneous dense
membranes 87 III . 6 Phase separation in polymer systems 89 III .
6. 1 Introduction 89 III . 6. 1. 1 Thermodynamics 89 III . 6. 2
Demixing processes 99 III . 6. 2. 1 Binary mixtures 99 III . 6. 2.
2 Ternary systems 102 III . 6. 3 Crystallisation 104 III . 6. 4
Gelation 106 III . 6. 5 Vitrification 108 III . 6. 6 Thermal
precipitation 109 III . 6. 7 Immersion precipitation 110 III . 6. 8
Diffusional aspects 114 III . 6. 9 Mechanism of membrane formation
117 III. 7 Influence of various parameters on membrane morphology
123 III. 7. 1 Choice of solvent-nonsolvent system 123 III . 7. 2
Choice of the polymer 129 III . 7. 3 Polymer concentration 130 III
. 7. 4 Composition of the coagulation bath 132 III . 7. 5
Composition of the casting solution 133 III . 7.
Observational, experimental and analytical data show that C60,
larger fullerenes, and related structures of elemental carbon exist
in interstellar space, meteorites, and on Earth and are associated
with meteorite in impact events and in carbon-rich environments
such as coals (shungite) and bitumen. The existence of natural
fullerenes is at best contested and incompletely documented;
realistically it is still controversial. Their presence in
astronomical environments can be experimentally constrained but
observationally they remain elusive. Fullerenes formation in
planetary environments is poorly understood. They survived for
giga-years when the environmental conditions were exactly right but
even then only a fraction of their original abundance survived.
Natural fullerenes and related carbon structures are found in
interstellar space, in carbonaceous meteorites associated with
giant meteorite impacts (including at the Cretaceous-Tertiary
boundary) as well as in soot, coal and natural bitumen.
This book provides an up-to-date summary of the state of knowledge
on natural fullerenes occurrences and the laboratory techniques
used to determine their presence at low concentration in rock
samples. It demonstrates that natural fullerenes exist and should
be searched for in places not yet considered such as
carbon-containing deep-seated crustal rocks.
"Natural Fullerenes and Related Structures of Elemental Carbon" is
written for professional astronomers, meteoriticists, earth and
planetary scientists, biologists and chemists interested in carbon
and hydrocarbon vapor condensation. It is an invaluable resource
for practicing research scientists and science teachers in Earth
and Planetary Science, Astronomy and Carbon Science.
Packaging plays a major role in the environmental footprints of
products from any industrial sector, and thus is important to
address the sustainability issues of packaging. Packaging and the
packaging sector have to be eco-conscious as there are many types
of packaging across various industrial sectors and so are their
environmental impacts as well. Plastic packaging is one of the most
common element and the packaging sector accounts for almost 40% of
plastic pollution in the world. Sustainable packaging is the only
way forward to alleviate the environmental devastations from the
the packaging sector. This book presents case studies and discusses
how to make packaging more sustainable for a better future.
• Describes the endemic plants used in traditional medicine •
Includes the chemical and bioactive compounds from desertic
medicinal plants • Addresses the analytic techniques to determine
chemical and bioactive compounds • Represents an effort to keep
the ethnobiological knowledge of communities
Display and play with the building blocks of life with The Elements
Magnet Set! Based on the iconic images from Theodore Gray's
bestselling book The Elements, this beautiful magnet set is the
perfect way to add a little atomic flair at work and home. Spell
out a fun message or just display and inspire some awe for all the
elements that make up the world around you. This miniature kit
includes: - 121 element magnets, each highlighting an important
piece of the periodic table. Magnet size is approximately 1" x 1" -
48-page book exploring the world's most important elements, with
full color-photographs throughout
It was the objective of the ASI on "Advances in High Pressure
Studies of Chemical and Biochemical Systems" to present the current
status of such studies and to emphasize the advances achieved
during the nine years since the previous ASI on "High Pressure
Chemistry." These advances are partly due to the improved
instrumentation enabling static and dynamic measurements at
pressures several orders of magnitude higher than before, and
partly due to the more general availability of high pressure
equipment. This has led to a remarkable development in various
areas of physics and chemistry, and especially in biochemistry.
Throughout the presentation of this Advanced Study Institute the
emphasis fell on the teaching character of such a summer school,
and the contributions in this volume are of such a nature.
Following a general introduction to modern high pressure research,
a series of chapters on theoretical and experimental studies of
gases, fluids and solids at high temperatures and pressures are
presented with special emphasis on the physical aspects involved.
Instrumentation used in such studies, viz. shock compression, NMR
spectroscopy, laser scattering, x-ray and neutron scattering, and
vibrational spectroscopy are treated in detail. The subsequent
chapters are devoted to the application of high pressure techniques
in the broad areas of organic, inorganic and biochemistry_ The
formal lectures were supplemented by 29 contributed papers, for
which a list of titles is included.
Agrochemical products and adjuvants are of vital importance in
agriculture, to protect food and fibre crops from weeds, insect
pests and diseases, in order to feed and clothe the growing world
population. In recent years there have been increasing pressures to
produce agrochemical formulations which have a lower environmental
impact and are safer in use. Enormous changes have taken place in
the chemistry and technology of agrochemicals over the last twenty
years or so and this book provides a timely review of the most
important area of technology in the development of new products.
This book covers issues around international product quality and
safety standards and describes the current and likely future trends
which will carry the industry forward into the next millennium. It
brings together well known international experts with many years of
practical experience from agrochemical companies, consultancies,
academic institutions and regulatory bodies. Chemists and
technologists involved in developing new or improved agrochemical
formulations will find this book an essential reference in the
course of their work. The book will also be of interest to those
working in research and development departments of raw material
suppliers, as a concise review of this important field.
This book presents a thorough and updated treatment of food
chemistry based on modern concepts.
This book contains the lecture notes for the NATO Advanced Research
Workshop on th Green Industrial Applications of Ionic Liquids held
April 12th_16 , 2000 in Heraklion, Crete, Greece. This was the
fIrst international meeting devoted to research in the area of
ionic liquids (salts with melting points below 100 0c), and was
intended to explore the promise of ionic liquids as well as to set
a research agenda for the fIeld. It was the fIrst international
meeting dedicated to the study and application of ionic liquids as
solvents, and forty-one scientists and engineers from academia,
industry, and government research laboratories (as well as six
industry observers and four student assistants) met to discuss the
current and future status of the application of ionic liquids to
new green industrial technologies. It was immediately clear that
the number of organic chemists and engineers working in the fIeld
needed to be increased. It was also clear that the declining
interest in high temperature molten salts and subsequent increase
in low melting ionic liquid solvents had not yet taken hold in
Eastern Europe. Participants from NATO Partner Countries
contributed signifIcant expertise in high temperature molten salts
and were able to take back a new awareness and interest in ionic
liquid solvents.
Eine pragnante, gut strukturierte Einfuhrung in die Anwendungen von
DFT-Berechnungen In der neu uberarbeiteten zweiten Auflage von
Density Functional Theory: A Practical Introduction liefern die
Autoren eine pragnante und leicht verstandliche Einfuhrung in die
wichtigsten Konzepte und praktischen Anwendungen der
Dichtefunktionaltheorie (DFT), wobei der Schwerpunkt auf die DFT
der ebenen Wellen gelegt wird. Die Autoren, die uber
jahrzehntelange Erfahrung auf diesem Gebiet verfugen, bieten
Studierenden mit unterschiedlichen Vorkenntnissen ein ausgewogenes
Mass an Verstandlichkeit und Klarheit und haben auf diese Weise ein
insgesamt sehr gut zu verstehendes Fachbuch verfasst. * In dieser
neuen Auflage werden die Genauigkeit von DFT-Berechnungen und die
Wahl der Funktionale detailliert eroertert * Das Werk bietet einen
UEberblick uber ein breites Spektrum an verfugbaren DFT-Codes * Mit
zusatzlichen Beispielen zur Nutzung von DFT fur Berechnungen von
Materialien mit hohem Durchsatz * Starkere Hervorhebung der
Berechnung von Phasendiagrammen und offener Ensemble-Methoden, die
in der Elektrochemie umfassend genutzt werden. * In dieser
erweiterten Auflage werden auch Berechnungen abgedeckt, die uber
die Standard-DFT hinausgehen, z. B. DFT mit Dispersionskorrektur,
DFT+U und zeitabhangige DFT
The material presented in this book deals with basic mechanisms of
free radical reactions in autoxidation processes and anitoxidant
suppression of autoxidation of foods, biochemical models and
biologi cal systems. Autoxidation in foods and corresponding
biological effects are usually approached separately although
recent mechanistic developments in the biochemistry and free
radical chemistry of per oxides and their precursors tend to bring
these two fields closer. Apparent ability of antioxidants in diets
to reduce the inci dence of cancer has resulted in scrutiny of
autoxidized products and their precursors as possibly toxic,
mutagenic and carcinogenic agents. Mechanisms of any of these
effects have been barely ad dressed. Yet we know now that free
radicals, as esoteric as they were only a few decades ago, are
being discovered in foods, biochem ical and biological systems and
do play a role in the above-mentioned causalities. The purpose of
the Workshop and the resulting book was to give a unifying approach
towards study of beneficial and deleterious effects of
autoxidation, based on rigorous scientific considerations. It is
our hope that the material presented in this book will not only
provide a review of the "state of the art" of autoxidation and anti
oxidants, but also reflect the interaction which occurred during
the Workshop between workers using model sytems, and food and
biological systems."
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