The first volume of the "Handbook of Polyhydroxyalkanoates (PHA): Microbial Biosynthesis and Feedstocks" focusses on feedstock aspects, enzymology, metabolism and genetic engineering of PHA biosynthesis. It addresses better understanding the mechanisms of PHA biosynthesis in scientific terms and profiting from this understanding in order to enhance PHA biosynthesis in bio-technological terms and in terms of PHA microstructure. It further discusses making PHA competitive for outperforming established petrol-based plastics on industrial scale and obstacles for market penetration of PHA. Aimed at professionals and graduate students in Polymer (plastic) industry, wastewater treatment plants, food industry, biodiesel industry, this book Covers the intracellular on-goings in PHA-accumulating bacteria Assesses diverse feedstocks to be used as carbon source for PHA production including current knowledge on PHA biosynthesis starting from inexpensive waste feedstocks Summarizes recent relevant results dealing with PHA production from various organic by-products Presents the key elements to understand and fine-tune the microstructure and sequence-controlled molecular architecture of PHA co-polyesters Discusses the use of CO-rich syngas, sourced from various organic waste materials, for PHA biosynthesis

This second volume of the "Handbook of Polyhydroxyalkanoates (PHA): Kinetics, Bioengineering and Industrial Aspects" focusses on thermodynamic and mathematical considerations of PHA biosynthesis, bioengineering aspects regarding bioreactor design and downstream processing for PHA recovery from microbial biomass. It covers microbial mixed culture processes and includes a strong industry-focused section with chapters on the economics of PHA production, industrial-scale PHA production from sucrose, next generation industrial biotechnology approaches for PHA production based on novel robust production strains, and holistic techno-economic and sustainability considerations on PHA manufacturing. Aimed at professionals and graduate students in Polymer (plastic) industry, wastewater treatment plants, food industry, biodiesel industry, this book Provides an insight into microbial thermodynamics to reveal the central domain governing in PHA formation, both aerobically and anaerobically. Includes systematic overview of mathematical modelling approaches, starting from low-structured and formal kinetic models until modern tools like metabolic models, cybernetic models and so forth Discusses challenges during scale up of PHA production processes and on development of non-sterile processes and contamination-resistant strains Presents a holistic picture of the current state of PHA research by mixed cultures Reviews the industry-related point of view about current and future trends in PHA production and processing

The third volume of the Handbook of Polyhydroxyalkanoates (PHA) focusses on the production of functionalized PHA bio-polyesters, the post-synthetic modification of PHA, processing and additive manufacturing of PHA, development and properties of PHA-based (bio)composites and blends, the market potential of PHA and follow-up materials, different bulk- and niche applications of PHA, and the fate and use of spent PHA items. Divided into fourteen chapters, it describes functionalized PHA and PHA modification, processing and their application including degradation of spent PHA-based products and fate of these bio-polyesters during compositing and other disposal strategies. Aimed at graduate students and professionals in Polymer science, chemical engineering and bioprocessing, it: Covers current state of the art in the development of chemically modifiable PHA including mult-istep modifications of isolated biopolyesters, short syntheses of monomer feedstocks and so forth. Describes design of functionalized PHA-based polymeric materials by chemical modification . Illustrates preparation of bioactive oligomers derived from microbial PHA and synthetic analogues of natural PHA oligomers. Discusses processing and thermomechanical properties of PHA. Reviews advantages of PHA against other bio-based and conventional polymers with current applications and potential uses of PHA-based polymers highlighting innovative products.

The third volume of the Handbook of Polyhydroxyalkanoates (PHA) focusses on the production of functionalized PHA bio-polyesters, the post-synthetic modification of PHA, processing and additive manufacturing of PHA, development and properties of PHA-based (bio)composites and blends, the market potential of PHA and follow-up materials, different bulk- and niche applications of PHA, and the fate and use of spent PHA items. Divided into fourteen chapters, it describes functionalized PHA and PHA modification, processing and their application including degradation of spent PHA-based products and fate of these bio-polyesters during compositing and other disposal strategies. Aimed at graduate students and professionals in Polymer science, chemical engineering and bioprocessing, it: Covers current state of the art in the development of chemically modifiable PHA including mult-istep modifications of isolated biopolyesters, short syntheses of monomer feedstocks and so forth. Describes design of functionalized PHA-based polymeric materials by chemical modification . Illustrates preparation of bioactive oligomers derived from microbial PHA and synthetic analogues of natural PHA oligomers. Discusses processing and thermomechanical properties of PHA. Reviews advantages of PHA against other bio-based and conventional polymers with current applications and potential uses of PHA-based polymers highlighting innovative products.

The first volume of the "Handbook of Polyhydroxyalkanoates (PHA): Microbial Biosynthesis and Feedstocks" focusses on feedstock aspects, enzymology, metabolism and genetic engineering of PHA biosynthesis. It addresses better understanding the mechanisms of PHA biosynthesis in scientific terms and profiting from this understanding in order to enhance PHA biosynthesis in bio-technological terms and in terms of PHA microstructure. It further discusses making PHA competitive for outperforming established petrol-based plastics on industrial scale and obstacles for market penetration of PHA. Aimed at professionals and graduate students in Polymer (plastic) industry, wastewater treatment plants, food industry, biodiesel industry, this book Covers the intracellular on-goings in PHA-accumulating bacteria Assesses diverse feedstocks to be used as carbon source for PHA production including current knowledge on PHA biosynthesis starting from inexpensive waste feedstocks Summarizes recent relevant results dealing with PHA production from various organic by-products Presents the key elements to understand and fine-tune the microstructure and sequence-controlled molecular architecture of PHA co-polyesters Discusses the use of CO-rich syngas, sourced from various organic waste materials, for PHA biosynthesis

This second volume of the "Handbook of Polyhydroxyalkanoates (PHA): Kinetics, Bioengineering and Industrial Aspects" focusses on thermodynamic and mathematical considerations of PHA biosynthesis, bioengineering aspects regarding bioreactor design and downstream processing for PHA recovery from microbial biomass. It covers microbial mixed culture processes and includes a strong industry-focused section with chapters on the economics of PHA production, industrial-scale PHA production from sucrose, next generation industrial biotechnology approaches for PHA production based on novel robust production strains, and holistic techno-economic and sustainability considerations on PHA manufacturing. Aimed at professionals and graduate students in Polymer (plastic) industry, wastewater treatment plants, food industry, biodiesel industry, this book Provides an insight into microbial thermodynamics to reveal the central domain governing in PHA formation, both aerobically and anaerobically. Includes systematic overview of mathematical modelling approaches, starting from low-structured and formal kinetic models until modern tools like metabolic models, cybernetic models and so forth Discusses challenges during scale up of PHA production processes and on development of non-sterile processes and contamination-resistant strains Presents a holistic picture of the current state of PHA research by mixed cultures Reviews the industry-related point of view about current and future trends in PHA production and processing

The book presents current R&D activities to unravel the physico-chemical properties of diverse biopolymers, and their processing towards functionalised, high-performance bio-products with defined applications. The importance of this research becomes obvious by considering the annual plastic production of about 330 Mt, the lion's share thereof based on the conversion of fossil feedstocks that is highly recalcitrant against biodegradation. Alternative environmentally degradable plastics cover not even 5% of today's plastic market. Such biopolymers encompass various macromolecules of biological origin with diverse monomeric composition, and manifold physico-chemical properties. This structural diversity makes them potential candidates to produce bulk materials, e.g., for packaging purposes, smart functionalised materials in special niches like the biomedical field. Consequently, we witness an increasing trend towards new natural polymers to replace well-established products like plastics. After decades of global R&D developments in this field, and numerous body blows on the way to the anticipated market breakthrough of biopolymers, it is generally recognised that the success of such new materials needs progress in both material performance and production prices. The book Current Advances in Biopolymer Processing & Characterisation is dedicated to the current state-of-the-art of production, modification, characterisation, and processing of two major biopolymer groups: Firstly, polysaccharides, nature's most abundant raw materials, are represented by specialised contributions on biomedical applications of starch and its follow-up products. Polysaccharides were also studied for the examples of functionalised thermoplastic starch, molecular and hydrocolloidal characteristics of xanthan in aqueous environments, and by the design of functionalised xylan-based bio-materials. Secondly, the second series of contributions encompasses diverse biopolyesters. Advanced methods to improve the properties of PLA, fine-tune PLA properties by triggering PLA's crystallisation rate during melt processing, and the strongly emerging field of 3D-printing of PLA, PCL, and microbial PHA are described. Finally, the authors familiarise the reader with the application of mixed microbial cultures to produce PHA heteropolyesters with different thermo-mechanical properties in dependence on cultivation strategy and the microbial species composition. This compilation of new biomaterials with surprising functions and performance, based on these natural polymers will address scientists active in biopolymers production, functionalisation, characterisation, and processing towards bio-technomers. The book is also dedicated to undergraduate students of polymer chemistry and polymer processing, and to representatives of the polymer industry who are interested in developing innovative, sustainable and smart polymeric products. Activities motivated by reading this book shall boost the impatiently desired market penetration of biopolymers and their follow-up products. Such materials definitely display a socioeconomic impact by addressing prevailing ecological concerns such as depleting fossil resources, growing piles of plastic waste, and increasing global warming. The contributions to this book illustrate that bio-inspired remedies for prevalent ecological problems are already available, developed by experts in polymer sciences and engineering, or that these solutions are at least in the status of development.

Bodendynamik als Fachdisziplin wird immer wichtiger: Die Anzahl und Intensit t von Ersch tterungsquellen in unmittelbarer Nachbarschaft von Bauwerken nimmt deutlich zu. Nur verbesserte Berechnungsverfahren erf llen die Anforderungen des erh hten Sicherheitsbedarfs. In dieser neu bearbeiteten 3. Auflage: physikalische Grundlagen, die Ermittlung grundlegender Kennziffern, praktisch wichtige Wertebereiche, L sungsans tze und 175 Abbildungen.

DEA agent Kris Tomlyn, and Times journalist Danielle Underwood assigned to cover Tomlyn's last trip into the Gulf of Mexico before calling it quits, unwittinly find themselves caught in the middle of a conflict neither of them ever imagined when they sailed from Marathon in the Florida keys on that fateful day in January, 1992.

Masterarbeit aus dem Jahr 2007 im Fachbereich VWL - Mikrookonomie, allgemein, Note: 1.00, Universitat Zurich, Veranstaltung: Volkswirtschaftslehre; Sportokonomie, Sprache: Deutsch, Abstract: Diese Arbeit untersucht die Determinanten der Nachfrage nach Profi- Eishockey in der Schweiz. Dabei vergleicht sie die Resultate aus einer OLS-Schatzung und einer Quantilsregression. Die Ergebnisse sind beeindruckend. Es kann nicht nur gezeigt werden, dass die gewahlten Variablen in vielen Fallen einen hochsignifikanten Einfluss auf die Nachfrage ausuben, sondern auch dass sich die Form der Verteilung der Regressoren in den verschiedenen Quantilen deutlich unterscheidet, was auf eine gewisse Heterogenitat in der Nachfrage schliessen lasst. Weiter weist die Beziehung zwischen der Unsicherheit uber den Ausgang des Spiels und der Besucherzahl unabhangig von der Methode einen stark positiven und signifikanten Zusammenhang aus. Obwohl das intuitiv sehr einleuchtend erscheinen mag, lassen die empirischen Resultate vieler fruherer Studien diese Eindeutigkeit vermissen. Zusatzlich wecken die Ergebnisse den Verdacht, dass soziookonomisch bedingte, clubspezifische Eigenschaften die Nachfrage in betrachtlichem Mass stimulieren.