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  • Inorganic Chemistry  (6,728)
  • Life and Medical Sciences  (1,358)
  • Industrial Chemistry  (1,307)
  • 42.75
  • Biology
  • 2020-2024  (22)
  • 1950-1954  (3,584)
  • 1935-1939  (3,946)
  • 1915-1919
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  • 1
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    transcript Verlag | transcript Verlag
    Publication Date: 2024-03-22
    Description: Gene gelten im Allgemeinen als die Essenz eines Lebewesens, die all seine charakteristischen Eigenschaften bestimmt. Aus biologischer Sicht trifft diese Vorstellung jedoch längst nicht mehr zu. Im Mittelpunkt dieses Buches steht daher die Frage, warum und wie das essentialistische Denken die gesellschaftliche Wahrnehmung biologischer Forschungsprojekte immer noch beeinflusst. Anhand aktueller Erkenntnisse der Genetik und Epigenetik geht Kirsten Schmidt auf die Suche nach einer neuen Interpretation des Genbegriffs im Zeitalter der Postgenomik. Das Verständnis von Genen als dynamischen Prozessen erweist sich dabei als eine fruchtbare Alternative zum Essentialismus.
    Keywords: Essentialismus ; Gen ; Philosophie ; Epigenetik ; Biologie ; Genetik ; Postgenomik ; Leben ; Wissenschaft ; Wissenschaftsphilosophie ; Naturphilosophie ; Wissenschaftssoziologie ; Soziologie ; Philosophy ; Biology ; Life ; Science ; Philosophy of Science ; Philosophy of Nature ; Sociology of Science ; Sociology ; bic Book Industry Communication::P Mathematics & science::PD Science: general issues::PDA Philosophy of science ; bic Book Industry Communication::H Humanities::HP Philosophy::HPJ Philosophy: metaphysics & ontology ; bic Book Industry Communication::P Mathematics & science::PD Science: general issues::PDR Impact of science & technology on society
    Language: German
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  • 2
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    Masaryk University Press | Masaryk University
    Publication Date: 2024-04-04
    Description: Title in English: History of the Institute of Biology, Faculty of Medicine, Masaryk University A representative book on the history and present of one of the oldest institutes of the Faculty of Medicine of Masaryk University, which has been contributing significantly to the development of biological sciences since its inception.
    Keywords: Historical sciences ; Historyof Medicine ; health care ; Personalities ; Natural science ; Biology ; thema EDItEUR::P Mathematics and Science::PD Science: general issues::PDX History of science
    Language: Czech
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  • 3
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    Logos Verlag Berlin | Logos Verlag Berlin
    Publication Date: 2024-04-04
    Description: In Zeiten, in denen die Komplexität gesellschaftlicher, politischer, wirtschaftlicher und technologischer Probleme zunehmend steigt, ist der Erwerb einer naturwissenschaftlichen Grundbildung für die persönliche Meinungsbildung von zentraler Bedeutung. Hierzu gehört das Erlernen von naturwissenschaftlichen Erkenntnismethoden wie dem Experimentieren. Erkenntnisse zu experimentierspezifischen Kompetenzen zeigen, dass Lernende über unterschiedliche Vorstellungen bezüglich des Experimentierens verfügen. Diese zeigen sich in unterschiedlichen Vorgehensweisen, die mehr oder weniger stark von der Vorgehensweise in realer wissenschaftlicher Forschung abweichen. Ziel der vorliegenden Studie ist eine differenzierte Erfassung und Analyse individueller Prozessstrukturen sowie prozessbezogener Niveaustufen von Experimentierprozessen Lehramtsstudierender der Biologie. Die Ergebnisse zeigen, dass die meisten Experimentierprozesse nicht, wie in idealisierten Modellen angenommen, einem linearen Prozessverlauf verlaufen, sondern wiederholte Wechsel zwischen den Experimentierphasen aufweisen. Insbesondere die Durchführung nimmt hier eine zentrale Stellung ein. Die Vernetzung der Experimentierphasen ist unterschiedlich ausgeprägt und steht in einem positiven Zusammenhang mit der Qualität eines Experimentierprozesses. Die prozessbezogenen Niveaustufen weisen Ausprägungen über alle Niveaus hinweg auf. Aus den Ergebnissen werden Hinweise zur Gestaltung von Unterricht und universitärer Lehre sowie Implikationen für die fachdidaktische Forschung abgeleitet.
    Keywords: Science ; Science ; Life Sciences ; Biology ; Education ; thema EDItEUR::P Mathematics and Science::PD Science: general issues ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences ; thema EDItEUR::J Society and Social Sciences::JN Education
    Language: German
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  • 4
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    Logos Verlag
    Publication Date: 2024-04-05
    Description: New technologies have revealed previously unknown and invisible parts of the human body and made it visible at the molecular level, revealing in turn more detailed structures and arrangements than those which were previously available. In doing so, in many ways they refine, expand, and even completely overturn forms of contemporary knowledge. This book maps the shifts and blurring of boundaries in contemporary bioscientific discourse. The authors of its chapters trace the shifts of boundaries in terms of the gradual blurring of the validity of established concepts, interpretive frameworks, and standards of judgment, which are analysed from ontological, gnoseological, ethical, and social perspectives. At the same time, they also map the blurring of boundaries in terms of the interdisciplinary crossing of boundaries between various scientific and artistic disciplines. The shifting of boundaries ultimately forms a part of these boundaries’ definition; upon the basis of a rationally guided discussion, these shifts can be guided and corrected so as to avoid any irreversible damage. Jana Tomašovičová is a philosopher with a special interest in contemporary philosophy and bioethics. She analyses the impact of biotechnology on traditional social, ethical, and anthropological concepts and their relevance in new conditions. She is an associate professor at the Faculty of Arts, University of Ss. Cyril and Methodius in Trnava, Slovakia. During her bioethics research, she conducted short research stays at the universities of Bonn, Heidelberg, Tübingen, and Zürich.
    Keywords: Science ; Life Sciences ; Biology ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences
    Language: English
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  • 5
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    Taylor & Francis | CRC Press
    Publication Date: 2023-09-12
    Description: The complex regulations of the Endangered Species Act established by the U.S. Fish and Wildlife Service can be challenging for environmental professionals who must comply with them or assist clients in compliance. This is true especially for those without a background in biology or ecology. The Endangered Species Act: History, Implementation, Successes, and Controversies discusses the Act using clear scientific prose that all professionals whose activities fit into the ESA compliance process can readily comprehend, including those with limited education in science. The book begins by exploring the deeply rooted history of the Endangered Species Act, which extends back decades preceding its enactment in 1973. It continues with a discussion of the basic scientific theory underlying the Act and provides an overview of its key regulations. The author also examines the Act in the context of other key environmental planning statutes such as the National Environmental Policy Act and the Clean Water Act, especially Section 404 of the Clean Water Act, which relates specifically to wetlands. The remainder of the book details the regulatory processes faced by other government agencies and private developers who must routinely ensure that their actions comply with the Endangered Species Act. It concludes with a broad discussion of current controversies associated with the Act and how those controversies might ultimately change how environmental practitioners will have to comply with the Act in the future. The book is neither a defense of the Endangered Species Act and its associated regulations nor a call to repeal or modify the Act or regulations. The presentation is factual and avoids the hype and hyperbole commonly directed at the Act by both environmental activists and deregulation proponents. Readers will gain a solid understanding of how the Act was established, what goals were envisioned by its framers, how current environmental practice under the Act has been shaped, and how those practices might be changed in the future.
    Keywords: Environment law ; Applied ecology ; Biology ; life sciences ; Zoology & animal sciences ; bic Book Industry Communication::L Law::LN Laws of Specific jurisdictions::LNK Environment, transport & planning law::LNKJ Environment law ; bic Book Industry Communication::R Earth sciences, geography, environment, planning::RN The environment::RNC Applied ecology ; bic Book Industry Communication::P Mathematics & science::PS Biology, life sciences ; bic Book Industry Communication::P Mathematics & science::PS Biology, life sciences::PSV Zoology & animal sciences
    Language: English
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  • 6
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    UCL Press
    Publication Date: 2024-03-23
    Description: Bloomsbury Scientists is the story of the network of scientists and artists living in a square mile of London before and after the First World War. This inspired group of men and women viewed creativity and freedom as the driving force behind nature, and each strove to understand this in their own inventive way. Their collective energy changed the social mood of the era and brought a new synthesis of knowledge to ideas in science and art. Class barriers were threatened as power shifted from the landed oligarchy to those with talent and the will to make a difference. A time of unexpected opportunities, from the new disciplines of Genetics and Ecology to Post-Impressionism and beyond, Michael Boulter seamlessly weaves together the stories originating from Bloomsbury’s laboratories, libraries and studios. He narrates the breakthroughs of scientists such as Ray Lankester and Marie Stopes alongside the creative outputs of H. G. Wells and Virginia Woolf, among many others, and intricately connects them all through personal friendships, grievances, quarrels and affections. Bloomsbury Scientists offers a fresh and crucial perspective on this history at a time when the complex relationship between science and art continues to be debated.
    Keywords: london ; history of science ; bloomsbury ; scientists ; Biology ; Charles Darwin ; Evolution ; Francis Galton ; thema EDItEUR::1 Place qualifiers::1D Europe::1DD Western Europe::1DDU United Kingdom, Great Britain ; thema EDItEUR::N History and Archaeology::NH History::NHD European history ; thema EDItEUR::P Mathematics and Science::PD Science: general issues::PDX History of science
    Language: English
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  • 7
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    Frontiers Media SA
    Publication Date: 2024-04-04
    Description: This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact
    Keywords: polyoxometalates ; Catalysis ; Biology ; Energy ; Materials Science ; magnetic materials ; active matter ; Water-oxidation ; Keggin ; supramolecular chemistry ; thema EDItEUR::P Mathematics and Science::PD Science: general issues
    Language: English
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  • 8
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    Frontiers Media SA
    Publication Date: 2024-04-04
    Description: The Frontiers in Chemistry Editorial Office team are delighted to present the inaugural “Frontiers in Chemistry: Rising Stars” article collection, showcasing the high-quality work of internationally recognized researchers in the early stages of their independent careers. All Rising Star researchers featured within this collection were individually nominated by the Journal’s Chief Editors in recognition of their potential to influence the future directions in their respective fields. The work presented here highlights the diversity of research performed across the entire breadth of the chemical sciences, and presents advances in theory, experiment and methodology with applications to compelling problems. This Editorial features the corresponding author(s) of each paper published within this important collection, ordered by section alphabetically, highlighting them as the great researchers of the future. The Frontiers in Chemistry Editorial Office team would like to thank each researcher who contributed their work to this collection. We would also like to personally thank our Chief Editors for their exemplary leadership of this article collection; their strong support and passion for this important, community-driven collection has ensured its success and global impact.
    Keywords: Green and Sustainable Chemistry ; Analytical Chemistry ; Theoretical and Computational Chemistry ; Polymer Chemistry ; Medicinal and Pharmaceutical Chemistry ; Organic Chemistry ; Nanoscience ; Catalysis and Photocatalysis ; Supramolecular Chemistry ; Electrochemistry ; Inorganic Chemistry ; Chemical Biology ; thema EDItEUR::P Mathematics and Science::PD Science: general issues
    Language: English
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  • 9
    Publication Date: 2023-12-20
    Description: Giulia Parola’s Environmental Democracy at the Global Level: Rights and Duties for a New Citizenship can be seen as a manifesto that is both traditional and revolutionary at the same time. It calls for the construction of a new civilisation centred on the environment, while drawing on the traditional notions of democratic government. It adopts an approach that is focused on the power of individuals rather than governments, as ways to protect and improve the environment. It proposes that environmental rights and ecological duties are self-evident and inalienable, and should be treated as the cornerstones of a new democracy. Parola’s book is a thought provoking and intriguing work that will be of interest to scholars of environmental studies as well as to legal practitioners and non-specialists. Giulia Parola has studied Environmental Law at the University of Torino, at the University of René Descartes in Paris, (where she obtained PhD in Public Law) and at the University of Iceland ( LLM in Natural Resources Law and International Environmental Law). In 2011, she was appointed by the University of Laval (Canada, Quebec) as a researcher and a lecturer in Environmental Law.
    Keywords: GE1-350 ; K ; International Law ; Materials Science ; Industrial Chemistry ; Law ; Comparative Law ; Foreign Law ; Environment ; Natural Sciences ; German Civil Code ; Pollution Control ; bic Book Industry Communication::K Economics, finance, business & management::KC Economics::KCN Environmental economics
    Language: English
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  • 10
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-05
    Description: Nanofibers, particularly those of a carbonaceous content, have received increased interest in the past two decades due to their outstanding physico-chemical characteristics and their possibility to form and contribute towards a plethora of potentially advantageous materials for consumer, industrial and medical applications. Despite this, and together with the numerous research studies and published articles that have sought to investigate these aspects, the potential impact of CNTs is still not understood. Whether or not nanofibers may be able to provide a sophisticated alternative to conventional materials is still debatable, whilst their effects upon both environmental and human health are highly equivocal. How nanofibers are conceived can determine how they may interact with different environments, such as the human body. Understanding each key step of the synthesis and production of nanofibers to their use within potential applications is therefore essential in gaining an insight into how they may be perceived by any biological system and environment. Thus, obtaining such information will enable all scientific communities to begin to realize the potential advantages posed by nanofibers. The aim of this Special Issue therefore, was to provide a collective overview of nanofibers; ‘from synthesis to application’. The Issue particularly focuses upon carbon-based nanofibers, but also highlights alternative nanofiber types. Emphasis is given holistically, with articles discussing the production routes of nanofibers, their plight during their life-cycle (origin to applied form and effects over time), as well as how nanofibers could either incite conflict, or provide aid to human and environmental health.
    Keywords: QD1-999 ; Toxicology ; Chemistry ; Biology ; Material Science ; Nanofibers ; Nanotechnology ; thema EDItEUR::P Mathematics and Science::PN Chemistry
    Language: English
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  • 11
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    Taylor & Francis | CRC Press
    Publication Date: 2024-03-31
    Description: Because of many misconceptions, the biological drug manufacturing industry does not fully utilize disposable components, despite their wide availability. These misconceptions include concerns for the quality of materials, running costs, scalability, the level of automation possible, and the training of staff needed to include these components in existing bioprocessing systems. Not fully realizing the long-term benefits, many manufacturers are unwilling to discard investments made in fixed equipment and traditional stainless steel systems. Regulatory and environmental concerns, however, will eventually compel manufacturers to adopt disposable systems. Making a strong case for disposables, Disposable Bioprocessing Systems demonstrates the true potential of these systems. Written by a researcher and professor with hands-on experience in designing, establishing, and validating biological manufacturing facilities worldwide, and creating model facilities using maximum disposable technology, this book is the first comprehensive introduction to understanding disposable systems. It gives an overview of the current state of the disposable bioprocessing industry, resolves all controversial issues, and guides readers in choosing disposable components that meet their needs. An important chapter on safety addresses facts and myths about the use of plastics and elastomers—including the issue of leaching—and how to ensure regulatory compliance. Helping readers understand their choices, the book describes the equipment and systems available to prepare the starting materials for the manufacturing of biological drugs—from disposable containers to filters. The author also discusses costs, regulations, and concerns about waste disposal, and shares his predictions for the future of the disposable bioprocessing industry. A practical manual for those interested in the transition to disposable systems, this book will also interest students of bioprocessing. It offers a timely view of disposable bioprocessing technology as a "game changer" that will facilitate developing new drugs and conducting research in the emerging field of stem cells and gene therapy.
    Keywords: Biotechnology ; Pharmaceutical Science ; Industrial Chemistry ; PHARMACEUTICAL ; BIOSCIENCE ; CHEMLIB ; SCI-TECH ; BIOMEDICALSCIENCE ; CHEMICALENGINEERING ; STM ; bags ; bioreactors ; cleaning ; disposal ; downstream ; single ; stainless ; steel ; use ; validation ; thema EDItEUR::M Medicine and Nursing::MF Pre-clinical medicine: basic sciences ; thema EDItEUR::M Medicine and Nursing::MK Medical specialties, branches of medicine::MKG Pharmacology ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TD Industrial chemistry and manufacturing technologies::TDC Industrial chemistry and chemical engineering ; thema EDItEUR::M Medicine and Nursing::MQ Nursing and ancillary services::MQW Biomedical engineering
    Language: English
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  • 12
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    transcript Verlag
    Publication Date: 2021-02-10
    Description: Wahrnehmung, Kognition und Ästhetik lassen sich als differente Verarbeitungs- und Ausdrucksformen einer biologischen Basisausstattung des Menschen verstehen. Ob diese stabil sind oder ob sie kulturell überformt oder gar transformiert werden, bildet die zentrale medienanthropologische Fragestellung des Bandes. Dabei wird geprüft, welcher Art die wechselseitigen Impulse sind, die zu kulturellen und biologischen Veränderungen führen können, welche Wirkung sie besitzen und welche Dauer ihnen zukommt. Diese Fragen richten sich nicht allein auf Prozesse wahrnehmungstechnischer, kognitiver oder ästhetischer Habitualisierungen, sondern thematisieren deren physiologische Voraussetzungen. Mit der Beteiligung ausgewiesener Forscher aus den Bereichen Biologie, Medizin und Hirnforschung erschließt dieser Band Neuland im Grenzgebiet der Natur- und Kulturwissenschaften.
    Keywords: Wahrnehmung ; Kognition ; Ästhetik ; Medien ; Biologie ; Hirnforschung ; Medienästhetik ; Medienwissenschaft ; Aesthetics ; Media ; Biology ; Media Aesthetics ; Media Studies ; bic Book Industry Communication::J Society & social sciences::JF Society & culture: general::JFD Media studies
    Language: German
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  • 13
    Publication Date: 2024-04-05
    Description: The Great Lagoon is a central part of the Szczecin Lagoon, a major component in the Odra River estuary system. It is also an important European natural heritage site and one of the largest resting places for migratory birds in the Baltic Sea area. The first part of Wolnomiejski's and Witek’s book gives a thorough overview of the most up-to-date knowledge of this region, including the assessment of its biological production. Based on these findings authors develop a food web model of the Polish part of the Szczecin Lagoon, identifying a total of 45 trophic-functional components. The model describes a variety of features ranging from the magnitude of consumption, to the amount of unassimilated food and export of individual system components, and serves as an invaluable source, helping researchers to estimate various ecological indicators of The Great Lagoon’s ecosystem.
    Keywords: QH301-705.5 ; Biology ; Natural Sciences ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences
    Language: English
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  • 14
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    Universitätsverlag Göttingen
    Publication Date: 2024-04-04
    Description: This bibliography documents the printed works of Johann Friedrich Blumenbach (1752–1840) and makes them accessible for research purposes. Blumenbach was Professor of Medicine and Natural History at the University of Göttingen. He was one of the leading exponents of the revolutionary change of the geo-biological concept of the world at the turn of the 18th to the 19th century. His works exemplarily show the interactions between the life sciences, the humanities and the social sciences of his day.
    Keywords: History of Universities ; Bibliography ; Biology ; History of Science ; Darwinism ; thema EDItEUR::P Mathematics and Science::PD Science: general issues ; thema EDItEUR::J Society and Social Sciences::JN Education::JNM Higher education, tertiary education ; thema EDItEUR::G Reference, Information and Interdisciplinary subjects::GB Encyclopaedias and reference works::GBC Reference works::GBCR Bibliographies, catalogues ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences ; thema EDItEUR::P Mathematics and Science::PD Science: general issues::PDX History of science
    Language: German
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  • 15
    Publication Date: 2022-04-28
    Description: For more than 40 years, Jesper Hoffmeyer has been committed to the idea of developing “a semiotics of nature, or biosemiotics as he chose to call this effort, that could intelligibly explain how all the phenomena of inherent meaning and signification in living nature – from the lowest level of sign processes in unicellular organisms to the cognitive and social behavior of animals – can emerge from a universe that was not so organized and meaningful from the very beginning” (Emmeche et al. 2002: 41). In this volume, over 80 world-class scholars from more than 20 countries select a short quotation taken from any of Jesper Hoffmeyer’s texts and provide their scholarly commentary upon that passage – whether in the form of an analytical explication, a critical disagreement or a conceptual extension – that as they feel asks the questions that need to be asked, proposes the ideas that need to be proposed, or that draws out the implications that need to be so explicitly drawn out, germane to the claims of the selected passage. At once a celebration and a serious academic development of the work of Jesper Hoffmeyer, this landmark volume marks the occasion of his 70th birthday on February 21, 2012.
    Keywords: jesper hoffmeyer ; semiotics ; biosemiotics ; Biology ; Charles Sanders Peirce ; Evolution ; Semiosis ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GT Interdisciplinary studies::GTE Semiotics / semiology
    Language: English
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  • 16
    Publication Date: 2024-04-08
    Description: The name DGGTB (Deutsche Gesellschaft für Geschichte und Theorie der Biologie; German Society for the History and Theory of Biology) reflects recent history as well as German tradition. The Society is a relatively late addition to a series of German societies of science and medicine that began with the »Deutsche Gesellschaft für Geschichte der Medizin und der Naturwissenschaften«, founded in 1910 by Leipzig University's Karl Sudhoff (1853-1938), who wrote: »We want to establish a ,German' society in order to gather German-speaking historians together in our special disciplines so that they form the core of an international society...«. Yet Sudhoff, at this time of burgeoning academic internationalism, was »quite willing« to accommodate the wishes of a number of founding members and »drop the word German in the title of the Society and have it merge with an international society«. The founding and naming of the Society at that time derived from a specific set of historical circumstances, and the same was true some 80 years later when in 1991, in the wake of German reunification, the »Deutsche Gesellschaft für Geschichte und Theorie der Biologie« was founded. From the start, the Society has been committed to bringing studies in the history and philosophy of biology to a wide audience, using for this purpose its Jahrbuch für Geschichte und Theorie der Biologie. Parallel to the Jahrbuch, the Verhandlungen zur Geschichte und Theorie der Biologie has become the by now traditional medium for the publication of papers delivered at the Society's annual meetings. In 2005 the Jahrbuch was renamed Annals of the History and Philosophy of Biology, reflecting the Society's internationalist aspirations in addressing comparative biology as a subject of historical and philosophical studies.
    Description: The name DGGTB (Deutsche Gesellschaft für Geschichte und Theorie der Biologie; German Society for the History and Theory of Biology) reflects recent history as well as German tradition. The Society is a relatively late addition to a series of German societies of science and medicine that began with the »Deutsche Gesellschaft für Geschichte der Medizin und der Naturwissenschaften«, founded in 1910 by Leipzig University's Karl Sudhoff (1853-1938), who wrote: »We want to establish a ,German' society in order to gather German-speaking historians together in our special disciplines so that they form the core of an international society...«. Yet Sudhoff, at this time of burgeoning academic internationalism, was »quite willing« to accommodate the wishes of a number of founding members and »drop the word German in the title of the Society and have it merge with an international society«. The founding and naming of the Society at that time derived from a specific set of historical circumstances, and the same was true some 80 years later when in 1991, in the wake of German reunification, the »Deutsche Gesellschaft für Geschichte und Theorie der Biologie« was founded. From the start, the Society has been committed to bringing studies in the history and philosophy of biology to a wide audience, using for this purpose its Jahrbuch für Geschichte und Theorie der Biologie. Parallel to the Jahrbuch, the Verhandlungen zur Geschichte und Theorie der Biologie has become the by now traditional medium for the publication of papers delivered at the Society's annual meetings. In 2005 the Jahrbuch was renamed Annals of the History and Philosophy of Biology, reflecting the Society's internationalist aspirations in addressing comparative biology as a subject of historical and philosophical studies.
    Keywords: Biology ; Historical studies ; Philosophical studies ; Maggi ; Pavia ; bic Book Industry Communication::H Humanities::HP Philosophy::HPC History of Western philosophy ; bic Book Industry Communication::P Mathematics & science::PS Biology, life sciences ; bic Book Industry Communication::W Lifestyle, sport & leisure::WN Natural history ; thema EDItEUR::Q Philosophy and Religion::QD Philosophy::QDH Philosophical traditions and schools of thought ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences ; thema EDItEUR::W Lifestyle, Hobbies and Leisure::WN Nature and the natural world: general interest
    Language: German
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  • 17
    Publication Date: 2022-04-28
    Description: At the start of the twenty-first century, warnings have been raised in some quarters about how – by intent or by mishap – advances in biotechnology and related fields could aid the spread of disease. Science academics, medical organisations, governments, security analysts, and others are among those that have sought to raise concern. Education and Ethics in the Life Sciences examines a variety of attempts to bring greater awareness to security concerns associated with the life sciences. It identifies lessons from practical initiatives across a wide range of national contexts as well as more general reflections about education and ethics. The eighteen contributors bring together perspectives from a diverse range of fields – including politics, virology, sociology, ethics, security studies, microbiology, and medicine – as well as their experiences in universities, think tanks and government. In offering their assessment about what must be done and by whom, each chapter addresses a host of challenging practical and conceptual questions. Education and Ethics in the Life Sciences will be of interest to those planning and undertaking training activities in other areas. In asking how education and ethics are being made to matter in an emerging area of social unease, it will also be of interest to those with more general concerns about professional conduct.
    Keywords: biotechnology ; prevention ; ethics ; education ; Bioethics ; Biological warfare ; Biological Weapons Convention ; Biology ; Biosecurity ; China ; Dual-use technology ; bic Book Industry Communication::J Society & social sciences::JF Society & culture: general::JFM Ethical issues & debates::JFMG Ethical issues: scientific & technological developments ; bic Book Industry Communication::J Society & social sciences::JN Education
    Language: English
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  • 18
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    Taylor & Francis | Routledge
    Publication Date: 2024-04-07
    Description: Attending the World Economic Forum this past week, I was struck by two trends. The first was that brain research has emerged as a hot topic. Not only was brain science or brain health a new theme at the meeting, research on the brain emerged in discussions about next generation computing, global cooperation, and even models of economic development as well as being linked to mental health or mindfulness. In a meeting frequented largely by economists and business leaders, I was surprised by the number of non-scientists who have become enchanted by brain science. Clearly this is the era of the brain, with mental health now part of a much broader discussion.
    Keywords: policy ; society ; mental health ; Biology ; Epigenetics ; Genetics ; Genome ; Neuroscience ; Plastic ; Social policy ; thema EDItEUR::J Society and Social Sciences ; thema EDItEUR::M Medicine and Nursing
    Language: English
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  • 19
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    Coimbra University Press
    Publication Date: 2022-01-31
    Description: This work brings together various contributions from experts in very diverse areas of knowledge, to discuss the theme ‘Light’ from various points of view. The subjects gathered in this work come from the areas of Physics, Philosophy, Transcendence, Chemistry, Optics, Literature, History of Sciences, History, Geography, International Relations, Biology, Psychology, Art, Cinema and Photography, Medicine and Museology. The texts partially reflect the contents presented at the interdisciplinary colloquium ‘Visões da Luz’ held in October 2015, on the occasion of the International Year of Light 2015, under the aegis of III-UC and open to academia and society, to teachers of the Basic and Secondary Education.
    Keywords: Geography ; Chemistry ; Literature ; Geology ; Light ; Optics ; Biology ; History ; Physics
    Language: Portuguese
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    Logos Verlag Berlin | Logos Verlag Berlin
    Publication Date: 2024-04-05
    Description: The field of psychiatry changed dramatically in the latter half of the nineteenth century, largely by embracing science. The transformation was most evident in Germany, where many psychiatrists began to work concurrently in the clinic and the laboratory. Some researchers sought to discover brain correlates of mental illness, while others looked to experimental psychology for insights into mental dynamics. Featured here, are the lives and works of Emil Kraepelin - often considered the founder of modern scientific psychiatry, his teacher Bernhard Gudden, and his anatomist colleague Franz Nissl. The book describes scientific findings together with the methods used; it explains why diagnoses were then (and are still now) so difficult to make; it also explores mind-brain controversies. The Making of Modern Psychiatry will inform and delight mental health professionals as well as all persons curious about the origins of modern psychiatry.
    Keywords: Science ; Life Sciences ; Biology ; Psychology ; Technology & Engineering ; Agriculture ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences ; thema EDItEUR::J Society and Social Sciences::JM Psychology ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TV Agriculture and farming
    Language: English
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    Taylor & Francis | CRC Press
    Publication Date: 2024-04-11
    Description: Suitable for practicing engineers and engineers in training, this book covers the most important operations involving particulate solids. Through clear explanations of theoretical principles and practical laboratory exercises, the text provides an understanding of the behavior of powders and pulverized systems. It also helps readers develop skills for operating, optimizing, and innovating particle processing technologies and machinery in order to carry out industrial operations. The author explores common bulk solids processing operations, including milling, agglomeration, fluidization, mixing, and solid-fluid separation.
    Keywords: Industrial Chemistry ; Food Chemistry ; FOOD ; CHEMLIB ; SCI-TECH ; CHEMICALENGINEERING ; CHEMISTRY ; STM ; bed ; distribution ; fluidized ; industry ; mass ; material ; particle-size ; processing ; technology ; transfer ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TD Industrial chemistry and manufacturing technologies::TDC Industrial chemistry and chemical engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TD Industrial chemistry and manufacturing technologies::TDC Industrial chemistry and chemical engineering::TDCT Food and beverage technology ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials::TGM Materials science
    Language: English
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    transcript Verlag | transcript Verlag
    Publication Date: 2024-03-27
    Description: From self-help books and nootropics, to self-tracking and home health tests, to the tinkering with technology and biological particles - biohacking brings biology, medicine, and the material foundation of life into the sphere of »do-it-yourself«. This trend has the potential to fundamentally change people's relationship with their bodies and biology but it also creates new cultural narratives of responsibility, authority, and differentiation. Covering a broad range of examples, this book explores practices and representations of biohacking in popular culture, discussing their ambiguous position between empowerment and requirement, promise and prescription.
    Keywords: Culture ; Representation ; Biology ; Medicine ; Biocultures ; Biohacking ; Biotechnology ; Cultural Narratives ; DIY ; America ; Body ; Biopolitics ; American Studies ; Life Sciences ; Cultural Studies ; thema EDItEUR::D Biography, Literature and Literary studies::DS Literature: history and criticism::DSB Literary studies: general ; thema EDItEUR::J Society and Social Sciences::JP Politics and government::JPA Political science and theory ; thema EDItEUR::M Medicine and Nursing::MB Medicine: general issues
    Language: English
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  • 23
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Es wird der Versuch unternommen, die Wärmeübergangszahl einer in einem senkrechten Verdampferrohr umlaufenden und siedenden Flüssigkeit in Abhängigkeit von den maßgebenden Einflüssen anzugeben. Zu diesem Zwecke wurden die Rohrwandtemperatur und die Flüssigkeitstemperatur im Rohr gemessen. Für die verwendeten Rohrabmessungen läßt sich die Wärmeübergangszahl durch eine einfache Potenzfunktion wiedergeben. Über sie wird im folgenden berichtet.Die Versuche wurden durchgeführt mit der dankenswerten Unterstützung des Vereins Deutscher Ingenieure durch Zuschüsse aus ERP-Mitteln, ferner der DECHEMA, Frankfurt a. M.; BASF, Ludwigshafen a. Rh.; B. Müller, Weidenau; C. Canzler, Düren, und Deutsche Forschungsgemeinschaft, Bad Godesberg.Meinen beiden Mitarbeitern Dipl.-Ing. R. Baumann und Dipl.-Ing. W. Busch danke ich für ihre Unterstützung bei der Durchführung und Auswertung der Versuche. Ferner waren mit den Versuchen beschäftigt die Herren cand. chem. ing. Hunke Schwarze, Boger, Canzler, Hummel, Ernst u. George.
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    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Die Verfahrenstechnik benutzt vielfach Methoden der Vakuumtechnik als Hilfsmittel. Ein Hauptproblem bei Verfahren im Druckgebiet unter 10 Torr ist der Transport großer Gas- und Dampfvolumina. Es wird eine Apparatur beschrieben, mit der man unter Ausnutzung dieser Tatsache sehr kleine Gasgehalte in Flüssigkeiten bestimmen kann.
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    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Es wird eine Auswahl neuer Anwendungen beschrieben, die sich auf die Theorie der Flammenfortpflanzung, auf rheologische Flüssigkeiten, die Strömung geschmolzenen Glases in der Schmelzwanne, die Bewegung des flüssigen Stahls im Konverter, den Einfluß pulsierender Strömung auf die Kohfenstaubverbrennung und die Heizgasströmung bei Eckenfeuerung beziehen. Am Beispiel des Gesetzes von Avogadro und des Wienschen Verschiebungsgesetzes wird schließlich gezeigt, daß die Bedeutung der Ähnlichkeitstheorie wesentlich tiefer als nur in der Anwendung liegt.
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 51-55 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Es wurde die Wärmeleitzahl verschiedener Flüssigkeiten in einer näher beschriebenen Apparatur untersucht, in der gleichzeitig ein hohes elektrisches Feld angelegt werden konnte. Es zeigte sich, daß das Wärmeleitvermögen unter dem Einfluß des Gleichspannungsfeldes auf das 2- bis 5fache des normalen Wertes ansteigt. Wie Schlierenaufnahmen beweisen, wird dieser mit steigender Temperatur zunehmende Effekt durch Konvektionsbewegungen der Flüssigkeiten hervorgerufen.
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 56-56 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 72-74 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Technische Kornverteilungen werden meist mit Hilfe der Rosin-Rammler-Sperling-Gleichung in einem doppelt-logarithmisch geteilten Körnungsnetz dargestellt. Im folgenden wird gezeigt, daß diese Verteilungsfunktion unter bestimmten Bedingungen auch Normalverteilungen erfaßt. Diese Tatsache erweitert den Anwendungsbereich der RRS-Gleichung und läßt manche Darstellungen im Körnungsnetz sinnfälliger deuten.
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 81-83 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Für elektrophoretische Trennungen von Substanzgemischen (Eiweißhydrolysaten, Gerbstoffgemischen) wurde ein Stromversorgungsgerät entwickelt, welches elektronisch - stabilisierte Gleichspannungen von 0 bis 1500 V liefert.
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    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Der Transport von Gasen und Dämpfen in Papier wird unter Verwendung einer Strömungsmethode untersucht. Die für die Luftdurchlässigkeit maßgebenden Faktoren können auf bekannte Gesetze zurückgeführt werden, so daß man die Durchlässigkeit für jedes permanente Gas aus einer Messung der Luftdurchlässigkeit für einen beliebigen mittleren Druck berechnen kann.  -  Der Wasserdampftransport in Papier und Folien kann, sofern er nicht nach den bekannten Gesetzen durch das freie Porenvolumen vonstatten geht, unter Berücksichtigung von Adsorptionsisothermen quantitativ erfaßt werden. Aus den theoretischen und experimentellen Untersuchungen folgt, daß das Oberflächenkonzentrationsgefälle sowie die Oberflächenkonzentration selbst von maßgeblichem Einfluß sind. Es wird damit die Möglichkeit aufgezeigt, Aussagen über die Wasserdampfdurchlässigkeit unter allen praktisch vorkommenden klimatischen Bedingungen zu machen.
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 97-100 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Außer der für die Selbstzündung von Gasen und Dämpfen maßgebenden Temperatur, dem „Gaszündpunkt“, findet man bei vielen brennbaren chemischen Substanzen noch einen  -  meist sehr viel niedriger liegenden  -  „Tropfzündpunkt“, bei dem sich die flüssige Phase der betreffenden Substanz beim Auftreffen auf eine heiße Fläche entzündet. Die Merkmale der beiden Zündpunkte werden einander gegenübergestellt und Folgerungen für explosionsgefährdete Räume gezogen; weiterhin wird eine empirische Formel für die Berechnung des Tropfzündpunktes in einzelnen chemischen Gruppen angegeben.
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 113-113 
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    Keywords: Chemistry ; Industrial Chemistry
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 101-106 
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    Keywords: Chemistry ; Industrial Chemistry
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 114-116 
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    Keywords: Chemistry ; Industrial Chemistry
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 118-120 
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    Chemie Ingenieur Technik - CIT 26 (1954) 
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 129-131 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Es wird ein Verfahren und die zugehörige Apparatur für die kontinuierliche Kurzweg-Fraktionierung beschrieben. Die Apparatur ist aus kontinuierlich abgestuften Elementen der einfachen Destillation zusammengesetzt und hat als wesentlichsten Bestandteil eine Heizwanne mit einem Temperaturgradienten. Die Leistungsfähigkeit des Verfahrens wird am Beispiel eines Zweistoffgemisches mit einer gewöhnlichen Fraktionierung aus einem Claisenkolben verglichen.
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    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Notes: An einigen Beispielen wird erläutert, wie man durch strömungstechnische Maßnahmen in Trocknern eine gleichmäßige Trocknung und geringe Verluste an Strömungsenergie erreichen kann. Ferner wird dargelegt, wie sich die Strömung vor und hinter Lüftern sowie in Querschnittsänderungen und Umlenkungen ordnen und lenken läßt, und wie man die Luft auf mehrere Kanäle genügend gleichmäßig verteilen kann.
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 157-163 
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    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Notes: Es werden die Bedingungen für die Entstehung eines Quertriebs (Auftriebs), der von der Magnus-Kraft herrührt, beschrieben und zunächst an sedimentierenden Teilchenschüttungen verschiedener Größe und verschiedenen Materials geprüft. Dabei wird die Zahl der sedimentierenden Teilchen im wandnahen Bereich mit der im achsennahen Bereich verglichen. Es ergab sich eine Anreicherung der Teilchen im achsennahen Bereich bis zu 25%. Bei sedimentierenden Schüttungen mit Teilchen zweier Größenklassen reichern sich dagegen die größeren im Strömungsmaximum bis zu 40% an.Im II. Teil dieser Arbeit wird die Wirkung der Magnus - Kraft in strömenden Elektrolytlösungen und Gasgemischen erörtert.
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 163-168 
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    Keywords: Chemistry ; Industrial Chemistry
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    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 171-172 
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 175-176 
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 236-236 
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    Keywords: Chemistry ; Industrial Chemistry
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 237-238 
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 239-244 
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 259-264 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Wenn man die Meßwerte für die reduzierte (d. h. auf den kritischen Zustand bezogene) Dichte aesättigter Flüssigkeiten in Abhängigkeit von der reduzierten Temperatur aufträgt, so erhält man, ähnlich wie beim Dampfdruck, keine einheitliche Kurve, wie es das Theorem der übereinstimmenden Zustände in der üblichen Fassung verlangt, sondern eine einparametrige Kurvenschar. Für diese wird eine der Erfahrung angepaßte Gleichung aufgestellt, die den auch für die Dampfdruckkurve maßgebenden „kritischen Parameter“ enthält. Durch Einführung der Nullpunktsdichte statt der kritischen Dichte ergibt sich eine vom kritischen Parameter weitgehend unabhängige Funktion, die tabellarisch wiedergegeben wird und deren Anwendungsmöglichkeiten diskutiert und an Hand von Zahlenbeispielen erläutert werden. Das auf den absoluten Nullpunkt extrapolierte Molvolumen zeigt bei Kohlenwasserstoffen präzise Zusammenhänge mit der Struktur der Molekeln. Zur Abschätzung des kritischen Volumens organischer Verbindungen wird eine Zusammenstellung der Meßwerte und ein System von Substitutionsinkrementen angegeben.
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 281-284 
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    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Nach einer grundsätzlichen Betrachtung des Ausmauerungs-Problems werden allgemeine Formeln zur Ermittlung der Spannungen und Dehnungen angegeben, die in einer Kugelschale unter dem Einfluß des Druckes und eines Temperaturgefälles auftreten. Hieraus wird für den ausgemauerten, kugelförmigen Behälter eine Bedingung hergeleitet, deren Erfüllung gewährleistet, daß sich das Mauerwerk vom Eisenmantel nicht ablöst. Die Verwendung von quellendem Kitt bringt Vorteile. Abschließend werden die im Mauerwerk und im Eisenmantel auftretenden Spannungen ermittelt.
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    ISSN: 0009-286X
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    Notes: Im I. Teil wurde der Quertrieb in sedimentierenden Teilchenschüttungen untersucht. Nachfolgend wird gezeigt, daß auch in laminar strömenden wäßrigen Elektrolytlösungen ein Quertrieb entsteht, infolgedessen die größeren lonen bevorzugt in den Bereich höherer Strömungsgeschwindigkeit, also in den achsennahen Bereich diffundieren. Diese Versuche lassen Schlüsse auf die lonenhydratation zu. Außerdem wurde der Quertrieb in laminar strömender Luft mit sehr hoher Strömungsgeschwindigkeit, z. B. im Wirbelrohr, beobachtet. Auch dort ergibt sich für die größeren Molekeln eine Anreicherung im achsennahen Bereich, d. h. eine O2-Anreicherung im Kaltgasanteil. Abschließend werden die Ergebnisse in den einzelnen Aggregatzuständen miteinander verglichen.
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 287-289 
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 291-291 
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 349-349 
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 533-538 
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    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Für verschiedene Verfahren der chemischen Technik, insbesondere bei der Glasherstellung und in der Eisenindustrie, werden Werkstoffe gebraucht, die bei Temperaturen von etwa 1500 °C und darüber beständig sind. Hierfür kommen vor allem keramische Materialien in Betracht. Es werden daher im folgenden Baustoffe und Rohstoffe behandelt, welche zur Herstellung von Silica-, Sillimanit-, Korund-, Magnesit-, Chrommagnesit-, Dolomit-, Siliciumcarbid- und Zirkon-Steinen dienen. Anwendungsgrenzen, Wärmedehnung, Temperaturwechselbeständigkeit, Wärmeleitung und die chemische Beständigkeit dieser Materialien bei Temperaturen um 1500 °C werden besprochen.
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 548-554 
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    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Es wird ein Überblick über die Eigenschaften und die Verwendungsmöglichkeiten von Kunststoff-Folien und kunststoffbeschichteten Papieren und Pappen als Verpackungswerkstoffe in der chemischen Industrie gegeben, wobei deren Vor- und Nachteile einander gegenübergestellt werden.
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 543-547 
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    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Der Packstoffverbrauch entfällt zu einem großen Teil auf Aluminiumfolien, vor allem in der Nahrungsund Genußmittel-Industrie. In der chemischen und pharmazeutischen Industrie dagegen ist er verhältnismäßig gering. Im folgenden wird ein Überblick über die für Verpackungszwecke wichtigen Eigenschaften von Aluminiumfolien gegeben unter besonderer Berücksichtigung der Möglichkeiten zu ihrer Veredelung.
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 555-561 
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    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Die Badische Anilin- & Soda-Fabrik A.G. hat gemeinsam mit der Firma Dr. F. Raschig GmbH., Ludwigshafen am Rhein, für die chemische Technik den neuen Werkstoff BascodurEingetragenes Warenzeichen der BASF. entwickelt, der geeignet ist, Lücken innerhalb der heute bekannten nichtmetallischen Apparatebaustoffe zu schließen. Nach kurzen Angaben über Eigenschaften und Verarbeitung des Materials werden an Hand zahlreicher Bilder insbesondere Anwendungsbeispiele aus dem chemischen Apparatebau besprochen.
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 568-575 
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 643-643 
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 647-648 
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 667-669 
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    Source: Wiley InterScience Backfile Collection 1832-2000
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    Notes: Im In- und Ausland nimmt die Anwendung dimensionsloser Kennzahlen auf dem Gebiet der Wärmeübertragung immer mehr zu. Diese Entwicklung läßt sich nicht durch den Einwand aufhalten, daß dimensionslose Darstellungen unanschaulich seien, denn in Wirklichkeit lassen sich alle wichtigen Kennzahlen als Verhältnisse gleichartiger Größen in anschaulicher Form darstellen und bei der Berechnung von Wärmeübertragern verwenden.
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    Notes: Das Problem der automatischen Zählung und Größenanalyse mikroskopischer Teilchen wird besonders in den USA und England seit einigen Jahren intensiv bearbeitet, während in Deutschland auf diesem Gebiet praktisch noch kein Schrifttum vorliegt. Es sollen deshalb hier der Stand der Entwicklung und die bekanntgewordenen Geräte diskutiert werden. Allen beschriebenen Methoden ist das Ziel gemeinsam, jedes Teilchen einzeln zu messen und zu zählen. Dies führt zwangsläufig zu elektronischen Mitteln, da nur diese hinreichende Zählgeschwindigkeiten ermöglichen. -  Im ersten Teil der Arbeit werden Verfahren zur automatischen Größenanalyse von Aerosolen behandeit, während im zweiten Teil automatische Methoden zur Auszählung von mikroskopischen Präparaten und Mikrophotographien beschrieben werden.
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 673-676 
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    Notes: Nachdem im ersten Teil das Anheizen flüssigkeitsgefüllter Behälter behandelt wurde, werden nun der Temperaturverlauf und die Wärmeverluste beim Abkühlen derartiger Behälter berechnet. Dabei wird sowohl der Abkühlungsvorgang aus dem stationären Zustand heraus behandelt als auch der Fall, daß vor Erreichen des stationären Zustands die Wärmezufuhr im Innern des Behälters aufhört. Die Resultate für den Abkühlungsvorgang lassen sich ohne neue Schwierigkeiten aus den schon in Teil I gewonnenen Ergebnissen für das Anheizen herleiten. Es wird ferner das Anheizen und die Abkühlung gasgefüllter Behälter untersucht. Zwei Beispiele zeigen die Anwendung der gewonnenen Gleichungen und der daraus entwickelten Diagramme.
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 1-1 
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    Chemie Ingenieur Technik - CIT 26 (1954) 
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    Notes: Aus umfangreichen Untersuchungen an den verschiedensten Trocknertypen1 wird in dieser Arbeit über die Ergebnisse berichtet, die an Tunnel-, Mulden- sowie Stromtrocknern erhalten wurden. Die Versuche hatten den Zweck, rechnerische Unterlagen für den Entwurf der Trockner zu schaffen.
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 14-18 
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    Notes: Die Erzeugung der technisch wichtigen spezifischen Oberflächen am Beispiel von Quarzsand bei fort-schreitender Schwingmahlung wird in weitem Feinheitsbereich verfolgt; die jeweils aus Siebanalyse bzw. Körnungsnetz erhaltenen idealisierten Oberflächen und die Oberflächen nach dem Blaine-Test werden mit der zunächst physikalish am besten definierten Oberfläche nach der Argon-Adsorptionsmethode verglichen und wesentliche zerkleinerungsphysikalische Folgerungen gezogen sowie Bewertungsfragen beantwortet.
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    Notes: In der Verfahrenstechnik sind häufig Prozesse durchzuführen, bei denen Mehrstoffgemische mit einer flüssigen oder gasförmigen Phase behandelt werden müssen. Die bei diesen Verfahren auftretenden strömungstechnischen Probleme sind bisher von der klassischen Strömungslehre nur sehr wenig erörtert worden. Die folgenden Ausführungen zeigen, wie auf diesem Gebiete durch Anwendung strömungstechnischer Methoden praktisch wichtige Erkenntnisse gewonnen werden können.
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    Notes: Beschrieben werden ein Verfahren sowie eine Meßanordnung, mit denen die Wämeleitfähigkeit λ, die Wärmekapazität cλ und die Wärmeeindringzahl \documentclass{article}\pagestyle{empty}\begin{document}$\sqrt {\lambda c\gamma } $\end{document} in einem Kurzversuch gleichzettig bestimmt werden können.
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 44-51 
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    Notes: In einer Versuchsanlage wurden Wärmeübergang und Druckabfall verschiedener Speichermassen gemessen. Auf Grund dieser und früherer Versuche wurden Heizflächenbedarf und Heizflächenkosten unter gleichen energetischen Bedingungen für längs durchströmte Rohre verschiedenen Durchmessers, Kugelschüttungen, Raschig-Ringfüllungen sowie Riffeleinsätze ermittelt. Am Beispiel der Regeneratoren von Linde-Fränkl-Anlagen werden die Vorteile gegenüber Röhren-Wärmeaustauschern diskutiert. Die Versuche sind noch nicht abgeschlossen.
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 55-56 
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 56-56 
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 59-60 
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 57-57 
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 57-59 
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 60-64 
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 65-72 
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    Notes: Chemie und Hüttenkunde sind keine getrennten Forschungsgebiete. Lediglich ihre äußere und industrielle Geschichte führte zu zwei verschiedenen Bezeichnungen, die auch heute noch beibehalten werden. In Wirklichkeit aber überschneiden sich gerade in den letzten Jahrzehnten die beiden Wissenschaftszweige in zunehmendem Maße. Der Einfluß der reinen Chemie auf die Hüttenkunde wird an vielen Beispielen erläutert.
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    Notes: Nachdem bereits über das Grundprinzip des Sorbogen-I-Verfahens berichtet wurde, soll hier seine Anwendung bei der Abscheidung von Wasser, Kohlendioxyd und Acetylen aus zu zerlegender Luft in einer Reinigungsanlage beschrieben werden. Die Anlage arbeitet mit Aktivkohle als Adsorbens bei Normaltemperatur und mäßig erhöhtem Druck und bildet den vorgeschalteten Teil einer Luftzerlegungsanlage. Das Verfahren bietet gegenüber älteren Anlagen wirtschaftliche Vorteile. Es wird ein Reinheitsgrad von einigen Hundertstel pM (1 pM = 1 ċ 10-4%) Kohlendioxyd und eine völlige Entfernung von Acetylen und Wasserdampf ohne zusätzlichen Energieaufwand erreicht.
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    Notes: Nach dem Theorem der übereinstimmenden Zustände sollten die reduzierten Dampfdruckkurven verschiedener nicht assoziierter Stoffe zusammenfallen. Tatsächlich bilden sie jedoch in guter Näherung eine einparametrige Kurvenschar. Durch Einführung eines stoffspezifischen „kritischen Parameters“ gelingt es, eine die Meßwerte befriedigend darstellende Gleichung dieser Kurvenschar zu entwickeln, mit deren Hilfe man die ganze Dampfdruckkurve einer Substanz berechnen kann, wenn der kritische Punkt und der normale Siedepunkt bekannt sind. Kennt man aus Messungen den Dampfdruck bei zwei beliebigen Temperaturen, so läßt sich auch der kritische Druck mit einiger Zuverlässigkeit abschätzen. Zur Erleichterung der Anwendung werden die in der Gleichung auftretenden Temperaturfunktionen tabellarisch wiedergegeben. An verschiedenen Beispielen wird die Brauchbarkeit der neuen Dampfdruckformel gezeigt.
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 94-96 
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    Notes: Die konstruktiven Voraussetzungen für Laboratoriumszentrifugen mit bisher in der Praxis nicht erreichbaren Fliehkräften werden dargelegt. Das entwickelte Gerät, das im Gegensatz zu anderen Bauarten nur eine einzige radial um die Drehachse rotierende Zelle für die Einsatzflüssigkeit besitzt, wird beschrieben. Es ermöglicht bei 84 000 U/min Normalbeschleunigungen von 584 000 g, bei 120 000 U/min und kleineren Präparatmengen von 915 000 g. Besondere Einsätze zur Erfassung des Sediments bringen bei präparativen und möglicherweise auch analytischen Arbeiten besondere Vorteile.
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 106-112 
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 121-129 
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    Notes: Während der Hauptversammlung der Deutschen Bunsengesellschaft 1953 in Duisburg wurden unter dem Hauptthema „Die physikalisch-chemischen Grundlagen der technischen Reaktionsführung“ durch zusammenfassende Vorträge und Originalmitteilungen Beiträge zum wissenschaftlichen Verständnis und zur technischen Beherrschung der Reaktionsapparate gebracht, die im folgenden zusammenfassend referiert werdenDie sechs zusammenfassenden Vorträge zum Hauptthema sowie eine Reihe weiterer fachlicher Vorträge sind veröffentlicht in Z. Elektrochem., Ber. Bunsenges. physik. Chem. 57, Nr. 7 [1953]. Diesen Arbeiten ist auch der größte Teil der hier wiedergegebenen Bilder entnommen.
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    Notes: Um ein Urteil über die Brauchbarkeit von Mischgeräten zu gewinnen, wurden auf Grund statistischer Überlegungen für Gemische aus zwei Komponenten Formeln entwickelt, die ein Maß für die Güte der Mischung abgeben.
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    Chemie Ingenieur Technik - CIT 26 (1954), S. 172-172 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 26 (1954) 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Vergleicht man die chemische Industrie der Deutschen Bundesrepublik mit der des Auslandes, so zeigt sich, daß unsere Industrie billiger produzieren muß. Kontinuierliche Verfahren sind deshalb von größtem Interesse. Aus den wichtigsten Grundverfahren werden Beispiele herausgegriffen, an denen die voraussichtliche künftige technische Entwicklung aufgezeigt wird. Zwangsläufig ergeben sich hieraus die Aufgaben, die der deutsche Apparatebau zu lösen hat.
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    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 26 (1954), S. 202-205 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Die Drehöfen mit balligen und oberflächengeschmierten Tragrollen wurden im Laufe der vergangenen beiden Jahre weiterentwickelt. Die im Betrieb mit diesen Lagerungen erzielten Erfahrungen werden mitgeteilt. Vor etwa 2 Jahren war darauf hingewiesen worden1, daß Mängel der bisherigen Drehofenlagerungen dadurch zu beseitigen sind, daß die Funktion des Ofentragens grundsätzlich von der Ofenlängsführung getrennt wird.
    Additional Material: 6 Ill.
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    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 26 (1954), S. 205-205 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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    Electronic Resource
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 26 (1954), S. 226-228 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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