This Brief highlights different approaches used to create stable cellulase and its use in different fields. Cellulase is an industrial enzyme with a broad range of significant applications in biofuel production and cellulosic waste management. Cellulase 7a from Trichoderma reesei is the most efficient enzyme in the bio hydrolysis of cellulose. In order to improve its thermal stability, it can be engineered using a variety of approaches, such as hydrophobic interactions, aromatic interactions, hydrogen bonds, ion pairs and disulfide bridge creation.

Biorefineries compiles the basic science and technologies used to convert terrestrial and aquatic biomass into essential molecular compounds and polymeric materials. The book provides in depth insights into this fairly recent concept of industrial chemistry that aims to achieve optimal economic profits while minimizing the environmental impact. Chapters written by renowned experts cover, amongst others, the application of catalysis, downstream processing, biomass sourced olefins, lignin biorefinery techniques and biogas. The authors thoroughly examine and explain the value chain for biomass conversion into platform molecules and their transformation into final products. A comprehensive thematic overview on the topic giving beginners access to fundamental concepts is presented. Supplemented by numerous full color figures and tables, the contents impart knowledge about the involved techniques. Advanced students and experts in the field will find the summary of state-of-the-art research and current literature of valuable interest. Explores the enormous potential of biomass conversion as a future source for fuels and chemicals Focuses on both general scientific background and current innovations in the field of biorefinery Targets students and researchers in Chemistry, Chemical Engineering, Biotechnology, and Materials Science About the Editors Prof. Michele Aresta, Chair of the Scientific Committee of CIRCC in Italy and holds the IMM Chair at the Department of Chemical and Biomolecular Engineering at NUS, Singapore. He is author of over 200 papers and Author or Editor of nine books. Prof. Angela Dibenedetto, Associate Professor at the Department of Chemistry of the University of Bari (Italy) focused on carbon dioxide utilization by applying biorefinery concepts; and Director of the Interuniversity Consortium on Chemical Reactivity and Catalysis-CIRCC. Prof. Franck Dumeignil, Deputy Director of the CNRS joint Unit of Catalysis and Chemistry of Solid (UCCS) of Lille University (France); project coordinator of several projects on chemistry, including the EuroBioRef Project for designing next generation biorefineries.

Centrifugal Materials Processing; L.L. Regel, W.R. Wilcox. Convection in Crystal Growth under High Gravity on a Centrifuge; J. Friedrich, G. Muller. Segregation in Crystal Growth under High Gravity on a Centrifuge: A Comparison between Experimental and Theoretical Results; J. Friedrich, G. Muller. Analysis of Thermal Convection in Molten Tin Under Centrifugal Conditions; L. Bergelin, A. Chevy. Thermal Stability During Centrifugation: Flow Visualization Experiment; Numerical Results; W.A. Arnold, L.L. Regel. Flow Visualization Study of Convection in a Centrifuge; P.V. Skudarnov, et al. Determination of Solid/Melt Interface Shape and Growth Rate During Gradient Freeze Solidification on a Centrifuge Using Current Interface Demarcation; I. Moskowitz, et al. In Situ Observation of Directional Solidification in High Gravity; Y. Inatomi, et al. Impurity Distribution and Superconducting Properties of PbTe: T1 Crystals Grown in a Centrifuge; R. Parfeniev, et al. A Low Cost Centrifuge for Materials Processing in High Gravity; Y.A. Chen, et al. 20 Additional Articles. Index.

The first edition of the Printing Ink Manual was published by the Society of British Printing Ink Manufacturers in 1961 to fill the need for an authorative textbook on printing technology, which would serve both as a training manual and a reliable reference book for everyday use. The book soon became established as a standard source of information on printing inks and reached its fourth edition by 1988. This, the fifth edition, is being published only five years later, so rapid has been the development in technology. The objective of the Printing Ink Manual remains unchanged. It is a practical handbook designed for use by everyone engaged in the printing ink industry and the associated industries. It provides all the information required by the ink technical for the day-to-day formulation of printing inks. It supplies the factory manager with details of the latest equipment and manufacturing methods, including large-scale production, and gives guidance on achieving quality assessment and total quality management specifications. Care has been taken to maintain the value of the Manual for training both technical personnel and others who requiresome kn- ledge of inks. Readers with little scientific knowledge will not find dif- culty in using the Manual, but sufficient chemistry and physics have been included to provide an explanation of the underlying principles and theories governing the behaviour of inks for use by the advanced te- nologist. Suppliers of raw materials, substrate manufacturers, printers and print users will find the book a valuable source of information.

Ion-exchange Technology II: Applications presents an overview of the numerous industrial applications of ion-exchange materials. In particular, this volume focuses on the use of ion-exchange materials in various fields including chemical and biochemical separations, water purification, biomedical science, toxic metal recovery and concentration, waste water treatment, catalysis, alcohol beverage, sugar and milk technologies, pharmaceuticals industry and metallurgical industries. This title is a highly valuable source not only to postgraduate students and researchers but also to industrial R&D specialists in chemistry, chemical, and biochemical technology as well as to engineers and industrialists.

It's the new rock and roll. It's the new black. Sustainability is trendy, and not just among hipsters and pop stars. The uncool chemical sector helped pioneer it, and today, companies inside and outside the sector have embraced it. But what have they embraced? Surely not the Brundtland definition of meeting "the needs of the present without compromising the ability of future generations to meet their own needs."

Sustainability describes a change in the chemical industry's approach to the external world: to regulators, to greens, to neighbors, to investors and to the general public. Displacing the adversarialism of the 1970s-80s, sustainability is a new approach to social/political conflict, and an attempt to rebuild the industry's long-suffering public image. In practice, it consists of:
A 'stakeholder' approach to communications and external relations
A rebranding of regulatory compliance and risk management, with the emphasis on their benefits to stakeholders
Recognition (and even celebration) of the opportunities, not just the costs, of environmental and social protection

The core of this book is a survey of the world's 29 largest chemical companies: how they put sustainability into action (six of the 29 do not), and the six 'sustainability brands' they have created. It begins with a history of stakeholders conflict, before looking at various definitions of sustainability - by academics, by the public and by investors. After the survey and analysis, the book covers sustainability and 'greenwash' plus the ROI of sustainability, and it gives five recommendations.

This comprehensive series covers the science and technology of zeolites and all related microporous and mesoporous materials. Authored by renowned experts, volume 3 deals with the most widely employed techniques for the post-synthesis modification of molecular sieves.

New process technology strategies are required to cope with the future. Fossil feedstocks are losing ground in favour of renewable feedstocks and secondary resources. Conventional processing routes using thermal `sledgehammer' techniques are replaced by highly selective (bio)catalytic conversions. The future process engineer is neither allowed to think in terms of unit operations, nor to take for granted the conventional practice of continuous steady state processing. Hybrid systems and transient operations are more and more frequently encountered. The continuing impressive progress being made in process modelling and control will revolutionize the process industries. In the new generation of chemical production processes the keyword is precision. Precision in terms of selectivity and of efficiency, is required to maximize the utilisation of materials and energy. Moreover, enhanced precision is needed to exploit the quality of materials and energy to the full extent. Only by reducing the squandering of materials, energy and quality will a harmonious relationship be established between the process industries, the economy, and the environment. Process integration, as well as an integrated effort by the disciplines involved in process technology, will be of crucial importance in attaining the goals of precision process technology. These emerging strategies involve an active exchange of tools and ideas between a variety of disciplines, not only in plant design and operation, but even more in the early stages of process development and design. By looking from various angles at what the future has in store for the process industries, this volume systematically lifts the corners of the veil and may inspire to establish a new tradition of precision in process technology.

Nanoparticles presents the remarkable variety of nanoparticle families, compositions, structures, and functions. The book discusses nanoparticles made of semiconductors, metals, metal-oxides, organics, biological and hybrid constituents. Through a wealth of examples and case studies, supplemented by numerous figures, readers that are not necessarily active or experts in this area acquire a broad overview of this exciting field at the interface between scientifi c research and practical technologies. The contents summarize the contributions to this field of diverse scientific and technological disciplines- chemistry, physics, biology, electronics and others providing acomprehensive knowledge- the types of nanoparticles, their compositions and how the relationships between the atomic constituents affect their properties, as well as potential applications of nanoparticles. - Covers diverse uses of nanoparticles in scientifi c research and industrial applications, underscoring their extraordinary diversity and potential utilization. - Experimental and conceptual approaches applied to the study of nanoparticles are discussed extensively. Additional references provide the reader with a basis for further study. - Also available by Professor Jelinek: Biomimetics - A Molecular Perspective (2013), ISBN: 978-3-11-028117-0

F.J. Balta-Calleja, A. Gonzalez Arche, T.A. Ezquerra, C. Santa Cruz, F. Batallan, B. Frick, G.A. Arche, E. Lopez Cabarcos, Structure and Properties of Ferroelectric Copolymers of Poly (vinylidene) Fluoride H.G. Kilian, T. Pieper Packing of Chain Segments: A Method for Describing X-Ray Patterns of Crystalline, Liquid Crystalline and Non-Crystalline Polymers K. Miyasaka PVA-Iodine Complexes: Formation, Structure and Properties

The two volumes "New Developments in Polymer Analytics" deal with recent progress in the characterization of polymers, mostly in solution but also at s- faces. Despite the fact that almost all of the described techniques are getting on in years, the contributions are expected to meet the readers interest because either the methods are newly applied to polymers or the instrumentation has achieved a major breakthrough leading to an enhanced utilizaton by polymer scientists. The first volume concentrates on separation techniques. H. Pasch summarizes the recent successes of multi-dimensional chromatography in the characteri- tion of copolymers. Both, chain length distribution and the compositional h- erogeneity of copolymers are accessible. Capillary electrophoresis is widely and successfully utilized for the characterization of biopolymers, particular of DNA. It is only recently that the technique has been applied to the characterization of water soluble synthetic macromolecules. This contributrion of Grosche and Engelhardt focuses on the analysis of polyelectrolytes by capillary electopho- sis. The last contribution of the first volume by Coelfen and Antonietti sum- rizes the achievements and pitfalls of field flow fractionation techniques. The major drawbacks in the instrumentation have been overcome in recent years and the"triple F techniques" are currently advancing to a powerful competitor to size exclusion chromatography.

Over the past four decades polymers containing imide groups (usually as build ing blocks of the polymer backbone) have attracted increasing interest of sci entists engaged in fundamental research as well as that of companies looking into their application and commercialization. This situation will apparently continue in the future and justifies that from time to time reviews be published which sum up the current state of knowledge in this field. Imide groups may impart a variety of useful properties to pol~'mers, e. g. , thermal stability chain stiffness, crystallinity, mesogenic properties, photoreactivity etc. These lead to a broad variety of potential applications. This broad and somewhat heteroge neous field is difficult to cover in one single review or monograph. A rather com prehensive monograph was edited four years ago by K. Mittal, mainly concen trating on procedures and properties of technical interest. Most reviews presented in this volume of Advances in Polymer Science focus on fundamen tal research and touch topics not intensively discussed in the monograph by K. Mittal. Therefore, the editor of this work hopes that the reader will appreci ate finding complementary information. Finally I wish to thank all the contributors who made this work possible and I would like to thank Dr. Gert Schwarz for the revision of the manuscripts of the contributions 3 and 4. Hamburg, September 1998 Hans R. Kricheldorf Contents Nanoporous Polyimides J. L. Hedrick, K. R. Carter, l. W. Labadie, R. D. Miller, W.

Over the past four decades polymers containing imide groups (usually as build ing blocks of the polymer backbone) have attracted increasing interest of sci entists engaged in fundamental research as well as that of companies looking into their application and commercialization. This situation will apparently continue in the future and justifies that from time to time reviews be published which sum up the current state of knowledge in this field. Imide groups may impart a variety of useful properties to polymers, e. g., thermal stability chain stiffness, crystallinity, mesogenic properties, photoreactivity etc. These lead to a broad variety of potential applications. This broad and somewhat heteroge neous field is difficult to cover in one single review or monograph. A rather com prehensive monograph was edited four years ago by K. Mittal, mainly concen trating on procedures and properties of technical interest. Most reviews presented in this volume of Advances in Polymer Science focus on fundamen tal research and touch topics not intensively discussed in the monograph by K. Mittal. Therefore, the editor of this work hopes that the reader will appreci ate finding complementary information. Finally I wish to thank all the contributors who made this work possible and I would like to thank Dr. Gert Schwarz for the revision of the manuscripts of the contributions 3 and 4. Hamburg, September 1998 Hans R. Kricheldorf Contents Rapid Synthesis of Polyimides from Nylon Salt Type Monomers Y. Imai . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Das Buch enthalt folgende Beitrage: C. Harbour, J.P. Barford, K.-S. Low, Sydney, Australia: "Prozessentwicklung " "fur Hybridoma-Zellen"A.J. MacLeod, Edinburgh, UK: "Die " "Verwendung von Plasmaproteinfraktionen als Zusatz zum Medium" "von Tierzellkulturen"M. Morandi, A. Valeri, Siena, Italy: "ss-Interferon Produktion im industriellen Massstab"J. Engels, E. Uhlmann, Frankfurt, FRG: "Gensynthese"H. Schwab, Graz, Austria: "Rekombinante DNA-Techniken zur Verbesserung " "industriell genutzter Mikroorganismenstamme""

R.W. Lenz Biodegradable Polymers J. Heller Poly (Ortho Esters) A.J. Domb, S. Amselem, J. Shah, M. Maniar Polyanhydrides: Synthesis and Characterization M.V. Sefton Microencapsulation of Live Animal Cells Using Polyacrylates E. Doelker Cellulose Derivatives

H.M. Kalisz, Freiburg, FRG: "Microbial Proteinases." Proteinases play an important role as reagents in laboratory and clinical analyses and in industrial processes. The discovery of new, highly specific proteinases and improved enzyme technology, such as immobilisation and novel purification methods, should make the microbial enzymes even more attractive in biotechnology. M. Maestracci, K. Bui, A. Thiery, A. Arnaud, P. Galzy, Montpellier, France: "The " "Amidase from a Brevibacterium Strain: Study and " "Applications." In the first part of this paper different microbial enzyme systems able to hydrolyze the true amide function are reviewed. Following consideration of analytical techniques (NMR, GLC, TLC, colorimetric assay of the ammonium ion) useful in the study of amidases, the second part of the paper deals with the amidases of Brevibacterium sp. R312 and their applications.

This is the second edition of Melt Rheology and its Role in Plastics Processing, although the title has changed to reflect its broadened scope. Advances in the recent years in rheometer technology and polymer science have greatly enhanced the usefulness of rheology in the plastics industry. It is now possible to design polymers having specific molecular structures and to predict the flow properties of melts having those structures. In addition, rheological properties now provide more precise information about molecular structure. This book provides all the information that is needed for the intelligent application of rheology in the development of new polymers, the determination of molecular structure and the correlation of processability with laboratory test data. Theory and equations are limited to what is essential for the use of rheology in the characterization of polymers, the development of new plastics materials and the prediction of plastics processing behavior. The emphasis is on information that will be of direct use to practitioners. Extensive references are provided for those wishing to pursue certain issues in greater depth. While the primary audience is applied polymer scientists and plastics engineers, the book will also be of use to postgraduate students in polymer science and engineering and as a text for a graduate course.

In this special issue review articles summarize the most outstanding features of microorganisms that can survive under extreme conditions. These microorganisms are adapted to living at 100 Degrees C in volcanic springs, at low temperatures in the cold polar seas, at high pressure in the deep sea, at very low and high pH values (pH 0-1 or pH 10-11), or at very high salt concentrations (35%). The latest findings on the molecular biology and the protein structure of these exotic organisms are presented. In addition, the potential applications of extremophiles are reviewed, including the production of enzymes, compatible solutes and the use of these extremophiles in the degradation of xenobiotics.

1. I. Gutman, Kragujevac/Yugpslavia Topological Properties of Benzenoid Systems 2. I. Gutman, Kragujevac/Yugoslavia Total Pi-Electron of Benzenoid Hydrocarbons 3. B.N. Cyvin, J. Brunvoll, S.J. Cyvin, Trondheim/Norway Benzenoid Chemical Isomers and Their Enumeration 4. B.N. Cyvin, J. Brunvoll, S.J. Cyvin, Trondheim/Norway Enumeration of Benzenoid Systems and Other Polyhexes