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Haltbarmachen von Lebensmitteln: Chemische, physikalische und mikrobiologische Grundlagen der Verfahren
by R. Heiss K. EichnerDieses Buch entwickelte sich aus Vorlesungen, welche der eine Autor an der Tech nischen Universität München bis zu seiner Emeritierung als Institutsleiter im Jahre 1975, und nachfolgend der andere Autor ebenfalls an dieser Universität und später hin an der Universität Münster gehalten hat. Lehren heißt Forschungsergebnisse zu vereinfachen und das Erkannte in einen allgemeinen Zusammenhang zu bringen. Die Kombination von Forschung und Lehre verbindet in besonderer Weise Erkenntnis fmdung und Anwendung. Die gemeinsame Veröffentlichung ergibt sich aus der überlegung, daß in der Bundesrepublik Deutschland die Verbesserungen lebens mitteltechnischer Prozesse vielfach noch empirisch - auf dem Weg über neue Konstruktionen - vorgenommen werden und daß forschungsmäßig weitgehend die Berechnung des physikalischen Verfahrensablaufes im Vordergrund steht. In den USA jedoch leiten sich die Verfahren von Anfang an stärker von den produktbezoge nen biochemischen und mikrobiologischen Eigenschaften und Veränderungen der Lebensmittel ab. Um den durch die Fakultätsgrenzen der Wissensgebiete in der Bundesrepublik Deutschland gehemmten Anpassungsprozeß zu verbessern, wurden die beiden aus unterschiedlichen fachlichen Ausgangspunkten gehaltenen Vorlesungen über die Haltbarmachungsverfahren vereinigt und dabei in der Weise überarbeitet, daß die Arten der Veränderungen im Zusammenhang mit den ihren zeitlichen Ablauf bestimmenden Einflußgrößen betrachtet werden, woraus sich Grundlagen für die Ver fahrenstechnik ableiten lassen.
Haltbarmachen von Lebensmitteln: Chemische, physikalische und mikrobiologische Grundlagen der Verfahren
by Rudolf Heiss Karl EichnerAus den Besprechungen: "...Es ist zu begrü?en, daß hiermit ein relativ knappes, gut lesbares, den modernsten Stand referierendes Werk vorhanden ist. Man kann jetzt schon sagen, daß es ein Standardwerk sein wird, an dem kein Lebensmittelchemiker oder -technologe vorbeigehen kann. Zumindest sollte es in jeder Fachbibliothek stehen und bei der Ausbildung der Lebensmittelchemiker und -technologen maßgeblich benutzt werden." Zeitschrift für Lebensmittel-Untersuchung und -Forschung#1
Haltbarmachen von Lebensmitteln: Chemische, physikalische und mikrobiologische Grundlagen der Verfahren
by Rudolf Heiss Karl EichnerGanz praxisgerecht vereinigt dieses bewährte Fachbuch die Sichtweisen des Lebensmitteltechnologen und des Lebensmittelchemikers. Die dritte Auflage wurde vor allem im Bereich der Mikrobiologie aktualisiert. Das neue Kapitel über die Mindestanforderungen an Verpackungen hat direkten Bezug zur Müllvermeidung. Aus dem Inhalt: Chemische Veränderungen und ihre Vermeidung.- Frischhaltepackungen.- Mikrobiologische Gefährdung und ihre Vermeidung.- Wirkung chemischer Konservierungsstoffe.- Frischhaltung durch Kälte.- Tiefgefrieren.- Trocknung.- Hitzesterilisierung.- Konservierung mittels ionisierender Strahlen.- Mindestanforderungen an die Verpackung.
Halophytic and Salt-Tolerant Feedstuffs: Impacts on Nutrition, Physiology and Reproduction of Livestock
by Hassan M. El Shaer Victor Roy SquiresNaturally occurring salt tolerant and halophytic plants (trees, shrubs, grasses, and forbs) have always been utilized by livestock as a supplement or drought reserve. Salt tolerant forage and fodder crops are now being planted over wide areas. Increasingly, large-scale production of fodder on formerly abandoned irrigated cropland has allowed salt t
Halophytes as a resource for livestock and for rehabilitation of degraded lands (Tasks for Vegetation Science #32)
by V. Squires A. T. AyoubDesertification (land degradation in arid, semi-arid and dry sub-humid areas resulting mainly from adverse human impacts) is the main environmental problem of dry lands, which occupy more than 40 per cent of the total global land area. The phenomenon threatens about 3.6 billion hectares and currently affects the livelihood of about 900 million people. Thl! world is now losing annually about 1.5 million hectares of total irrigated lands (240 million hectares) due mostly to salinization, mainly in drylands. Salt affected soils are widely distributed throughout the arid and semi-arid regions, and particularly severe in China (7 million ha), India (20 million ha), Pakistan (3.2 million ha), USA (5.2 million ha), as well as Near East, southern Europe and elsewhere. Demands on production have increased the pressure on existing productive land and moved the limits of production onto increasingly marginal lands. Wise land-use practices have yet to be developed for such conditions. The Executive Director of UNEP reported to the Governing Council in February 1992 concerning the "Status of Desertification and Implementation of the United Nations Plan of Action to Comtat Desertification (PACD)". The Report concludes that major efforts to implement the PACD had gJne into supporting measures rather than concrete corrective field operations. Little evidence of progrl!ss was found in irrigated croplands, rainfed croplands or rangelands. It was recommended that every piece of land should be used in keeping with its ecological characteristics, natural capabilities and constraints.
Halogen-Free Flame-Retardant Polymers: Next-generation Fillers for Polymer Nanocomposite Applications (Springer Series in Materials Science #294)
by Suprakas Sinha Ray Malkappa KurumaThis book presents an overview of recent academic and industrial research efforts concerning halogen-free flame-retardant (FR) polymers and their nanocomposites. It summarizes the synthesis methods for various types of halogen-free FR polymers and their nanocomposites, and critically reviews their flame-retardant behavior, toxic-gas evolution during combustion, and inhibition methods. In turn, the book discusses the importance of metal oxide nanoparticles, nanoclay, and graphene in flame inhibition and addresses the FR properties of various FR compounds containing polymers, their FR mechanisms, and fire toxicant releasing and inhibition methods in detail. It systematically covers the synergetic effects between different FR compounds, and explains the significance of thermal stability and melt dripping for polymers’ FR properties.The fundamental concepts described here are essential to understanding the FR behaviors of various polymers and their nanocomposites, and to developing efficient, environmentally friendly FR polymers and nanocomposites for a wide range of applications. This book is ideally suited for researchers in the fields of polymer science and engineering, and for graduate students in chemistry and materials science.
Halogen Bonding in Solution
by Stefan HuberLong-awaited on the importance of halogen bonding in solution, demonstrating the specific advantages in various fields - from synthesis and catalysis to biochemistry and electrochemistry! Halogen bonding (XB) describes the interaction between an electron donor and the electrophilic region of a halogen atom. Its applicability for molecular recognition processes long remained unappreciated and has mostly been studied in solid state until recently. As most physiological processes and chemical reactions take place in solution, investigations in solutions are of highest relevance for its use in organic synthesis and catalysis, pharmaceutical chemistry and drug design, electrochemistry, as well as material synthesis. Halogen Bonding in Solution gives a concise overview of halogen bond interactions in solution. It discusses the history and electronic origin of halogen bonding and summarizes all relevant examples of its application in organocatalysis. It describes the use of molecular iodine in catalysis and industrial applications, as well as recent developments in anion transport and binding. Hot topic: Halogen bonding is an important interaction between molecules or within a molecule. The field has developed considerably in recent years, with numerous different approaches and applications having been published. Unique: There are several books on halogen bonding in solid state available, but this will be the first one focused on halogen bonding in solution. Multi-disciplinary: Summarizes the history and nature of halogen bonding in solution as well as applications in catalysis, anion recognition, biochemistry, and electrochemistry. Aimed at facilitating exciting future developments in the field, Halogen Bonding in Solution is a valuable source of information for researchers and professionals working in the field of supramolecular chemistry, catalysis, biochemistry, drug design, and electrochemistry.
Halogen Bonding in Solution
by Stefan HuberLong-awaited on the importance of halogen bonding in solution, demonstrating the specific advantages in various fields - from synthesis and catalysis to biochemistry and electrochemistry! Halogen bonding (XB) describes the interaction between an electron donor and the electrophilic region of a halogen atom. Its applicability for molecular recognition processes long remained unappreciated and has mostly been studied in solid state until recently. As most physiological processes and chemical reactions take place in solution, investigations in solutions are of highest relevance for its use in organic synthesis and catalysis, pharmaceutical chemistry and drug design, electrochemistry, as well as material synthesis. Halogen Bonding in Solution gives a concise overview of halogen bond interactions in solution. It discusses the history and electronic origin of halogen bonding and summarizes all relevant examples of its application in organocatalysis. It describes the use of molecular iodine in catalysis and industrial applications, as well as recent developments in anion transport and binding. Hot topic: Halogen bonding is an important interaction between molecules or within a molecule. The field has developed considerably in recent years, with numerous different approaches and applications having been published. Unique: There are several books on halogen bonding in solid state available, but this will be the first one focused on halogen bonding in solution. Multi-disciplinary: Summarizes the history and nature of halogen bonding in solution as well as applications in catalysis, anion recognition, biochemistry, and electrochemistry. Aimed at facilitating exciting future developments in the field, Halogen Bonding in Solution is a valuable source of information for researchers and professionals working in the field of supramolecular chemistry, catalysis, biochemistry, drug design, and electrochemistry.
Haloforms and Related Compounds in Drinking Water (The Handbook of Environmental Chemistry #5 / 5G)
by P. Andrzejewski W. Elshorbagy F. H. Frimmel S. K. Golfinopoulos J. B. Jahnel B. Legube T. D. Lekkas R. Loos J. Nawrocki C. J. NokesDrinking water quality has been a matter of concern for several decades. Disinfection of drinking water improves its microbiological quality and prevents disease outbreaks. However, continuously increasing scientific research concerns the presence of organic and inorganic contaminants in water. Many of these compounds, named haloforms, originate from the procedure of disinfection, being formed during reactions of disinfectants with natural organic matter present in water. Haloforms may possess carcinogenic or mutagenic properties; therefore minimization of their concentrations in drinking water is a critical issue. Regulatory measures are becoming more and more stringent, as new health effects become known and optimized high-sensitivity analytical methodologies are being developed. Up-to-date research findings concerning all these aspects have been collected, critically reviewed, summarized, and are presented and discussed in the present book.
Haloalkyne Chemistry (SpringerBriefs in Molecular Science)
by Huanfeng Jiang Chuanle Zhu Wanqing WuThis book presents efficient and practical methods for the synthesis of various functionalized organic molecules from haloalkynes through different reaction processes such as cross-coupling reactions, nucleophilic additions and cycloadditions. It consists of four chapters demonstrating interesting examples of these transformations, and showcasing the synthetic power of haloalkynes for rapid assembly of complex molecular structures. Most of the protocols allow multiple bond-forming events to occur in a single operation, offering opportunities to advance chemical synthesis and address the increasing demands for green and sustainable chemistry. It also presents a wide range of functionalized products, including many synthetically useful conjugated cyclic and acyclic structures that have potential applications in materials science, chemical biology and natural product synthesis. This book is a valuable reference not only for organic chemists, but also for biologists and materials scientists involved in the modern synthesis of organic compounds and materials.Huanfeng Jiang and Wanqing Wu are both Professors at the School of Chemistry and Chemical Engineering, South China University of Technology, China.Chuanle Zhu is a Postdoctoral Fellow at the School of Chemistry and Chemical Engineering, South China University of Technology, China.
Halo Moon
by Sharon CohenBravery, friendship and the magic of an unknowable universe combine in this extraordinary adventure from the heart. Great for fans of Frank Cottrell Boyce and David Almond. In Ethiopia, Ageze has unearthed an ancient device that can make predictions. It tells him: there is a date, there is a place, there is a moment when it will happen. A disaster that will change everything. Halo Moon loves stars, and the night sky is full of them in her remote Yorkshire village. It's a place where nothing interesting ever happens, let alone a catastrophe. So when a stranger appears at the end of a near-impossible journey and tells her lives are at risk, she can barely believe it. But if she doesn't help Ageze, everything and everyone she knows might disappear for ever ... As Halo says: there's a hundred ways to start this story, a hundred ways to tell it. Each one is impossible. Each one, unbelievable. But it did all happen and I promise it's all true.HALO MOON is Sharon Cohen's second novel. Her first novel, THE STARMAN AND ME, was highly commended for the Branford Boase Award 2018 and shortlisted for the Essex Book Awards 2018. It has also been shortlisted for the East Sussex Children's Book Awards 2019 and nominated for the Northern Ireland Book Award 2019.
Hallo Robot: Meet Your New Workmate and Friend
by Bennie Mols Nieske VergunstHow robots will change our world Some fear that robots could do half our jobs and even wipe us out. But is that likely? Rather than hurt humans, robots could help us. Smart machines already make our cars and clean our homes. Soon they could drive us about, teach our children, and keep our parents company. While dealing with the ethical concerns about Artificial Intelligence, Bennie Mols and Nieske Vergunst present a brief guide to the history, present and future of robots. They show how moving AI could allow the lame to walk again, rescue survivors from collapsed buildings, and boost the global fight against hunger and pollution. Welcome to a realistic and vivid view of our robot future. With 60 colour photos. Topics covered: From dolls to industrial workers, a history of robots How robots respond to their surroundings What robots learn about human speech Why self-driving cars are safer and greener The possibilities of robots in education Meet the ‘cyborgs’ who learn to walk again Why evolution designs the best robots Will rogue robots take over the world? Using robots as weapons and drones What the future holds: 2100, a Robot Odyssey
Halide Perovskites: Photovoltaics, Light Emitting Devices, and Beyond
by Tze-Chien Sum Nripan MathewsReal insight from leading experts in the field into the causes of the unique photovoltaic performance of perovskite solar cells, describing the fundamentals of perovskite materials and device architectures. The authors cover materials research and development, device fabrication and engineering methodologies, as well as current knowledge extending beyond perovskite photovoltaics, such as the novel spin physics and multiferroic properties of this family of materials. Aimed at a better and clearer understanding of the latest developments in the hybrid perovskite field, this is a must-have for material scientists, chemists, physicists and engineers entering or already working in this booming field.
Halide Perovskites: Photovoltaics, Light Emitting Devices, and Beyond
by Tze-Chien Sum Nripan MathewsReal insight from leading experts in the field into the causes of the unique photovoltaic performance of perovskite solar cells, describing the fundamentals of perovskite materials and device architectures. The authors cover materials research and development, device fabrication and engineering methodologies, as well as current knowledge extending beyond perovskite photovoltaics, such as the novel spin physics and multiferroic properties of this family of materials. Aimed at a better and clearer understanding of the latest developments in the hybrid perovskite field, this is a must-have for material scientists, chemists, physicists and engineers entering or already working in this booming field.
Halide Perovskite Lasers (SpringerBriefs in Applied Sciences and Technology)
by Yong Kang Tay Huajun He Xiangling Tian Mingjie Li Tze Chien SumThis book highlights the rapidly emerging field of solution-processed halide perovskite lasers. These amazing materials not only possess exceptional photovoltaic properties, but are also outstanding optical gain media. Halide perovskites are the latest member of solution-processed optical gain media, joining organics and traditional semiconductor colloidal quantum dots. Amplified spontaneous emission and lasing have been demonstrated in various halide perovskite configurations and nanostructures with wavelengths tunable over the visible and infrared wavelengths (400–1000 nm). This book provides comprehensive information on perovskite lasing, starting with some fundamentals of lasers and their basic operating principles. Unambiguous methods for identifying lasing light emission are presented, while the basic optoelectronic properties of perovskite materials are also discussed, with an emphasis on their photophysics, using ultrafast optical spectroscopy techniques. The viability of perovskites as a gain media within a suitable resonator, as well as the characterization methods for optical gain, are highlighted. The book closes with a discussion on the remaining challenges (such as electrical driven lasing and material stabilities) that need to be tackled, and the future of this new family of lasers.
Halide Glasses for Infrared Fiberoptics (NATO Science Series E: #123)
by R. M. AlmeidaThe field of heavy metal halide glasses (namely fluorides) is only ten years old now, but it has developed rapidly since the discovery of fluorozirconate glasses by the group at the University of Rennes (France). The main reason for this was the early demonstration of the enormous potential of such glasses for use as long-haul ultra-low loss middle infrared waveguide materials, aided in part by the scientific interest held by their unusual short range structures. As a result, significant research efforts were initiated in the academic, government and industrial sectors in Europe, the United States and Japan. However, the search for a finished product has per haps led to a partial overlooking of some of the more funda mental aspects by the scientific community. After the initial excitement, the workers in this field are perhaps at a crossroads where attenuations lower than 1 dB/Km need to be obtained for long lengths of fiber of good chemical and thermal stability, in order to guarantee continual R&D sUE ports. Therefore, there is a strong need for a critical asses sment of the potential of halide glasses for infrared fiber optics and the formulation of recommendations for future re search in this area and other related fields.
Halbzeit der Energiewende?: An der Schwelle in eine neue Energiegesellschaft
by Josef GochermannIst die Energiewende steckengeblieben oder gar gescheitert? Haben Regulierung und Politik den Wandel zum nachhaltigen Umgang mit Energie ausgebremst? Verschläft die Wirtschaft die Wende? Nein, ganz und gar nicht. Während vielen die Energiewende nicht schnell genug vorankommt, befinden wir uns bereits auf der Schwelle in eine neue Energiegesellschaft. Die Energiewende ist Teil eines größeren Wandlungsprozesses. Ein Wandel im Umgang mit Energie, ihrer Gewinnung und ihres Wertes, Teil der laufenden vierten industriellen Revolution und viel mehr als nur der Umstieg auf regenerative Energien. Dieser Wandel vollzieht sich quer durch alle Bereiche der Wirtschaft und der Gesellschaft, baut die Energiewirtschaft um, verändert die Mobilität und initiiert dezentrale Lösungen in Unternehmen und Städten und Gemeinden. Das Buch richtet sich an alle, die sich am Umbau des Energiesystems beteiligen wollen, Unternehmen und Organisationen sowie auch der Politik.
Halbringe: Algebraische Theorie und Anwendungen in der Informatik (Teubner Studienbücher Mathematik)
by Hanns Joachim Weinert
Halbleiterbauelemente der Hochfrequenztechnik: Laufzeitdioden, Gunn-Elemente, Mikrowellen-Feldeffekttransistoren (Teubner Studienskripte Technik)
by Andreas Schlachetzki
Halbleiter und Phosphore / Semiconductors and Phosphors / Semiconducteurs et Phosphores: Vorträge des Internationalen Kolloquiums 1956 „Halbleiter und Phosphore“ in Garmisch-Partenkirchen
by Michael Schön Heinrich WelkerVom 28. August bis l. September 1956 fand in Garmisch-Partenkirchen unter dem Patronat der Internationalen Union für reine und angewandte Physik (I.U.P.A.P.) und mit Unterstützung der UNESCO sowie der Bundes-und der Bayerischen Landesbehörden ein "Internationales Kolloquium über Halbleiter und Phosphore" statt. Das Kolloquium wurde vorbereitet von W. Gerlach, G. Joos, H. Maier-Leibnitz, M. Schön und H. Welker. Das Kolloquium schloß sich an die "International Conference on Semi conductors 1954" in Amsterdam an. Während dort bereits Probleme auch aus dem Bereich der den Halbleitern nahe verwandten photoleitenden Phosphore in einigen Beiträgen berührt wurden, wurde in Garmisch-Partenkirchen dieses Gebiet ausdrücklich in die gemeinsame Diskussion einbezogen. Besonders eingehend wurden behandelt: Kristallwachstum und Kristallbau fehler, chemische Natur und Art des Einbaus von Fremdatomen in das Kristallgitter, Oberflächenerscheinungen, diamagnetische Suszeptibilität, Ther mokraft und elektrische Eigenschaften sowohl von Halbleiter- als auch von Phosphorsubstanzen. Mit dem vorliegenden Band legen wir nun die Vorträge des Kolloquiums den Fachgenossen vor. Es sind auch die Beiträge aufgenommen, die den Teil nehmern an dem Kolloquium nur als Vordrucke verfügbar waren, über die aber aus Zeitmangel nicht vorgetragen werden konnte. Von einer Kürzung der Beiträge glaubten wir absehen zu sollen, wenn auch hierdurch der Umfang des Tagungsberichts über das vorgesehene Ausmaß angewachsen ist. Zu danken haben wir den Autoren, besonders aber dem Verlag, der jederzeit auf unsere Wünsche eingegangen ist und dem die Herstellung und Ausstattung des Bandes eine stete Sorge war.
