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  • Inorganic Chemistry  (7,149)
  • Humans
  • Niederschlag
  • SPACE SCIENCES
  • 2020-2024  (10)
  • 1950-1954  (1,641)
  • 1940-1944  (1,640)
  • 1930-1934  (3,903)
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  • 1
    Publication Date: 2024-04-04
    Description: The risk estimation of precipitation events with high recurrence periods is difficult due to the limited time scale with meteorological observations. A homogenous distribution of rain gauges, especially in mountainous terrain, is also hardly convertible. In this study an analytical model with a high spatial resolution, designed for stochastic simulations of flood-related precipitation, is developed, evaluated and applied to different investigation areas in Germany.
    Keywords: QC1-999 ; Niederschlag ; precipitation ; Stochastik ; Meteorologie ; Simulation ; flood risk ; meteorology ; simulation ; stochastic ; Hochwasser ; bic Book Industry Communication::P Mathematics & science::PH Physics ; thema EDItEUR::P Mathematics and Science::PH Physics
    Language: German
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  • 2
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    Frontiers Media SA
    Publication Date: 2024-03-31
    Description: Echolocation has evolved in different groups of animals, from bats and cetaceans to birds and humans, and enables localization and tracking of objects in a dynamic environment, where light levels may be very low or absent. Nature has shaped echolocation, an active sense that engages audiomotor feedback systems, which operates in diverse environments and situations. Echolocation production and perception vary across species, and signals are often adapted to the environment and task. In the last several decades, researchers have been studying the echolocation behavior of animals, both in the air and underwater, using different methodologies and perspectives. The result of these studies has led to rich knowledge on sound production mechanisms, directionality of the sound beam, signal design, echo reception and perception. Active control over echolocation signal production and the mechanisms for echo processing ultimately provide animals with an echoic scene or image of their surroundings. Sonar signal features directly influence the information available for the echolocating animal to perceive images of its environment. In many echolocating animals, the information processed through echoes elicits a reaction in motor systems, including adjustments in subsequent echolocation signals. We are interested in understanding how echolocating animals deal with different environments (e.g. clutter, light levels), tasks, distance to targets or objects, different prey types or other food sources, presence of conspecifics or certain predators, ambient and anthropogenic noise. In recent years, some researchers have presented new data on the origins of echolocation, which can provide a hint of its evolution. Theoreticians have addressed several issues that bear on echolocation systems, such as frequency or time resolution, target localization and beam-forming mechanisms. In this Research Topic we compiled recent work that elucidates how echolocation – from sound production, through echolocation signals to perception- has been shaped by nature functioning in different environments and situations. We strongly encouraged comparative approaches that would deepen our understanding of the processes comprising this active sense.
    Keywords: QP1-981 ; Q1-390 ; bats ; Biosonar ; Humans ; marine mammals ; sensory biology ; Birds ; Behavior ; Communication ; thema EDItEUR::M Medicine and Nursing::MF Pre-clinical medicine: basic sciences::MFG Physiology
    Language: English
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  • 3
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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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  • 4
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    Frontiers Media SA
    Publication Date: 2024-03-30
    Description: In the ancient past, cocoa has been appreciated as a high-calorie food to boost energy in soldiers and for its undefined medicinal and mystical properties. During other times, chocolate has been considered as the forbidden “food of God”: a treasure of pleasure for the mind and the soul. The overall perception of the consumer for chocolate was of a “charming” and appealing food with lots of negative aspects related to high sugar content leading to consider chocolate as “junk food” for its “obesigen” calories. Recently, in association with the renewed interest of nutrition science in alternative source of health-promoting foods and ingredients, a large body of research has been conducted to unravel the pro and cons of cocoa in relation to human health. Epidemiological evidences indicate that cocoa consumption helps preventing cardiovascular disease for its high content in bioactive flavonoids. Clinical trials show that chocolate consumption might improve vascular function, decreasing platelet aggregation and display an antioxidant and anti-inflammatory effect. The putative protective action of cocoa seems to be multi-factorial and involving different aspects of vascular, antioxidant and endothelial function. However, the mechanism(s) that account for the benefits of cocoa it is still unclear. The aim of this Research Topic is therefore to provide the reader with an objective picture of the state of art on the association between cocoa and health, mainly through the evidences of human trials; overwhelmingly considered the golden standard for nutritional science. The Research Topic will cover the analysis of the manufacturing processes of the chocolate and the antioxidant effects in humans as well as the majority of the putative health effects of chocolate and cocoa, such as anti-inflammatory properties, effect on immunity, platelet aggregation, blood pressure, endothelial function and cognitive behavior. Unraveling the functional properties of cocoa will help to understand if the 'food of God' is a primordial gift for the health of mankind.
    Keywords: R5-920 ; RC581-607 ; TX341-641 ; Antioxidants ; Obesity ; Flavonoids ; Humans ; Chocolate ; Blood pressure ; Inflammation ; Cognitive function ; Cocoa ; Immunity
    Language: English
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  • 5
    Publication Date: 2024-04-05
    Description: This eBook comprises s series of original research and review articles dealing with the anatomical, genetic, and physiological organization of the auditory system from humans to monkeys and mice.
    Keywords: RC321-571 ; Q1-390 ; audition ; monkeys ; gens ; translational ; Humans ; Rodents ; Memory ; Perception ; Physiology ; functional imaging ; Anatomy ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences::PSA Life sciences: general issues::PSAN Neurosciences
    Language: English
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  • 6
    Publication Date: 2024-04-05
    Description: The global population aged over 60 is set to rise dramatically in the coming decades. In many countries, the older population now faces the prospect of spending a quarter of their lives aged over 65, and a significant proportion will have to cope with cognitive decline associated with normal ageing or with dementia disorders. Given that these fundamental demographic changes will pose a significant challenge to health care systems, a detailed understanding of age-related cognitive and neurobiological changes is essential in helping elderly populations maintain cognitive performance. In addition, developing sensitive biomarkers to identify those at risk of developing dementia is crucial for early and effective interventions. To make inferences about the ageing process from the animal model back to the human, rigorous behavioral paradigms must be used to ensure that the same function is being examined across species. Given that similar navigational paradigms can easily be applied to humans and animals, recent years have seen an expansion of studies attempting to bridge the gap between age-related changes in animal and human spatial cognition. These studies begin to suggest that disruptions in spatial computations are among the earliest indicators of impending cognitive decline. In addition, although many animal studies have identified pathological mechanisms with paradigms involving spatial navigation, these mechanisms support many nonspatial cognitive functions as well. As a consequence, a successful characterization of how spatial processing changes in the ageing brain could reveal fundamental effects of cognitive ageing that could inform about general mechanisms underlying decline in perception, mnemonic processing and multisensory integration.
    Keywords: RC321-571 ; Q1-390 ; Neuroscience ; spatial navigation ; Humans ; Aging ; Animal Models ; Dementia ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences::PSA Life sciences: general issues::PSAN Neurosciences
    Language: English
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  • 7
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    White Rose University Press | White Rose University Press
    Publication Date: 2022-12-06
    Description: In Hidden Depths, Professor Penny Spikins explores how our emotional connections have shaped human ancestry. Focusing on three key transitions in human origins, Professor Spikins explains how the emotional capacities of our early ancestors evolved in response to ecological changes, much like similar changes in other social mammals. For each transition, dedicated chapters examine evolutionary pressures, responses in changes in human emotional capacities and the archaeological evidence for human social behaviours. Starting from our earliest origins, in Part One, Professor Spikins explores how after two million years ago, movement of human ancestors into a new ecological niche drove new types of collaboration, including care for vulnerable members of the group. Emotional adaptations lead to cognitive changes, as new connections based on compassion, generosity, trust and inclusion also changed our relationship to material things. Part Two explores a later key transition in human emotional capacities occurring after 300,000 years ago. At this time changes in social tolerance allowed ancestors of our own species to further reach out beyond their local group and care about distant allies, making human communities resilient to environmental changes. An increasingly close relationship to animals, and even to cherished possessions, appeared at this time, and can be explained through new human vulnerabilities and ways of seeking comfort and belonging. Lastly, Part Three focuses on the contrasts in emotional dispositions arising between ourselves and our close cousins, the Neanderthals. Neanderthals are revealed as equally caring yet emotionally different humans, who might, if things had been different, have been in our place today. This new narrative breaks away from traditional views of human evolution as exceptional or as a linear progression towards a more perfect form. Instead, our evolutionary history is situated within similar processes occurring in other mammals, and explained as one in which emotions, rather than ‘intellect’, were key to our evolutionary journey. Moreover, changes in emotional capacities and dispositions are seen as part of differing pathways each bringing strengths, weaknesses and compromises. These hidden depths provide an explanation for many of the emotional sensitivities and vulnerabilities which continue to influence our world today.
    Keywords: Human demography ; Group size ; Lithic transfers ; Raw material movements ; Bonobos ; Dog burial ; Comfort ; Symbolic objects ; Symbolism ; Mobiliary art ; Attachment fluidity ; Hypersociability ; Human-animal relationships ; Dog domestication ; Attachment object ; Approachability ; Approach behaviour ; Avoidance behaviour ; Androgens ; Physiological responses ; Cognitive Archaeology ; Autism Spectrum Condition ; Handaxe ; Biface ; Neurodiversity ; Palaeolithic stone tools ; Evolution of neurodiversity ; Rock art ; Ice age art ; Material Culture ; Cultural transmission ; Emotional commitment ; Biopsychosocial approach ; Social tolerance ; Attachment ; Genus Homo ; Acheulian ; Cultural evolution ; Skeletal abnormality ; Injury ; Illness ; Interdependence ; Emotional sensitivity ; Moral emotions ; Evolution of Altruism ; Hominins ; Upper Palaeolithic ; Lower Palaeolithic ; Ecological niche ; Selective pressure ; Behavioural ecology ; Wolves ; Affective empathy ; Cognitive empathy ; Theory of mind ; Human Cognition ; Vulnerability ; Evolutionary Psychology ; Developmental psychology ; Helping behaviours ; Social cognition ; Social mammals ; Human Emotion ; Human social collaboration ; Generosity ; Emotional brain ; Social emotions ; Comparative behaviour ; Evolution ; Social carnivores ; Primate behavioural ecology ; Primate social systems ; Human Evolution ; Human ancestors ; Collaboration ; Evolutionary Biology ; Emotional vulnerability ; Social connection ; Decolonisation ; Social networks ; Middle Palaeolithic ; Community resilience ; Convergent evolution ; Chimpanzee ; Origin of modern humans ; Social safeness ; Wolf domestication ; Cherished possessions ; Compensatory attachment ; Loneliness ; Palaeolithic art ; Stress reactivity ; Bonding hormones ; Humans ; Hunter-gatherers ; Intergroup collaboration ; Tolerance ; Emotional connection ; Autism ; Trust ; Early Prehistory ; Palaeopathology ; Origins of healthcare ; Human self-domestication ; Palaeolithic Archaeology ; Social brain ; Care-giving ; Empathy ; Neanderthals ; Compassion ; Social Connection ; Evolution of Emotions ; Human Origins ; Adaptation ; Prehistory ; bic Book Industry Communication::J Society & social sciences::JH Sociology & anthropology::JHM Anthropology ; bic Book Industry Communication::H Humanities::HD Archaeology ; bic Book Industry Communication::P Mathematics & science::PS Biology, life sciences ; bic Book Industry Communication::P Mathematics & science::PS Biology, life sciences::PSA Life sciences: general issues::PSAF Ecological science, the Biosphere ; bic Book Industry Communication::P Mathematics & science::PS Biology, life sciences::PSA Life sciences: general issues::PSAJ Evolution ; bic Book Industry Communication::J Society & social sciences::JP Politics & government::JPW Political activism::JPWQ Revolutionary groups & movements ; bic Book Industry Communication::J Society & social sciences::JM Psychology
    Language: English
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  • 8
    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: drugs ; Behavior ; Memory tasks ; pre-clinical ; clinical ; Humans ; Animals ; thema EDItEUR::P Mathematics and Science::PD Science: general issues ; thema EDItEUR::M Medicine and Nursing::MK Medical specialties, branches of medicine::MKG Pharmacology
    Language: English
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  • 9
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    Aisthesis Verlag
    Publication Date: 2024-03-24
    Description: Wie konstituieren sich Gedichtbände – nach dem freien Vers – zu einem ästhetischen Ganzen? Anhand dreier Analysen von Gedichtbänden seit 2000 lote ich unter dem Paradigma formaler Wiederholung unabhängig von traditionellen Parametern wie Reim und Metrum Varianten der Konstituierung und Darstellung ästhetischer Ganzheit aus. So unterschiedlich die drei untersuchten AutorInnen – Ulf Stolterfoht, Oswald Egger und Monika Rinck – auch arbeiten, ihre Bücher (fachsprachen, nihilum album, Honigprotokolle) sind geprägt von formalen Gesamtkonzepten, die ich entsprechend unter den Bezeichnungen Populationen und branding, Zeit-Räume und Verortung sowie Protokollieren und Fest-schreiben zu erschliessen versuche. Trotz ihrer Unterschiedlichkeit spielt, so der methodische Leitgedanke, in allen drei Fällen das Denkmodell einer gegensätzlichen Gleichzeitigkeit von Kontinuität und Diskontinuität, das ich in Anlehnung an den evolutionstheoretischen Begriff des punctuated equilibrium herausarbeite, eine prägende Rolle. Dieses Denkmodell verbinde ich in der Folge mit den Begriffen einer kontinuierlichen Praxis des Denkens bzw. Schreibens und eines diskontinuierlichen Artefakts, deren Gegensätzlichkeit sich in der Gesamtdarstellung der jeweiligen Gedichtbände widerspiegelt. Unter dieser Voraussetzung trete ich an die Gedichtbände mit einer synchronen Methodik heran, sodass ich mich unter Ausschluss der diachronen, d.h. werkhistorischen, Perspektive auf die immanente Systematik der Bände konzentrieren kann. In der Wiederholung als Bedingung einer solchen Systematik finde ich die zeitweilige Stabilisierung einer Praxis, die ebenso Bedingung der poetischen Produktion wie Bedingung ihrer differenziellen Modifikation ist. Im Rückbezug auf das punctuated equilibrium taucht der Rhythmus des Wechselspiels zwischen der Kontinuität einer stabilen Praxis und der Diskontinuität einer Modifikation dieser Praxis als Grundmotiv auf.
    Keywords: Ulf Stolterfoht ; fachsprachen ; kompilieren ; branding ; Oswald Egger ; nihilum album ; Verortung ; Element ; Monika Rinck ; Honigprotokolle ; Niederschlag ; fest-schreiben ; Gedichte ; Form ; Gegenwartsliteratur ; Leben ; Lebensform ; Poetik der Analyse ; Wozu ; Warum ; Konzept ; Darstellung ; Synchronizität ; Rhythmus ; Wiederholung ; Ganzheit ; Struktur ; Denkmodell ; Kontinuität ; Diskontinuität ; Praxis ; Artefakt ; Punctuated Equilibrium ; Stephen J. Gould ; Charles de Roche ; Sandro Zanetti ; Paul Feyerabend ; Olivier Rieppel ; Karl Sigmund ; Christoph Menke ; thema EDItEUR::D Biography, Literature and Literary studies
    Language: German
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  • 10
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    De Gruyter | De Gruyter Open Poland
    Publication Date: 2022-11-22
    Description: This edited volume examines the opportunities to think, do, and/or create jointly afforded by digital storytelling. The contributors discuss digital storytelling in the context of educational programs, teaching anthropology, and ethnographic research involving a variety of populations and subjects that will appeal to researchers and practitioners engaged with qualitative methods and pedagogies that rely on media technology.
    Keywords: Discourse ; Climate Change ; Humans ; Nature ; Oceania ; Resilience ; Environmental Ethics ; Environmental Change ; Worldview ; bic Book Industry Communication::J Society & social sciences::JF Society & culture: general::JFF Social issues & processes::JFFC Social impact of disasters ; bic Book Industry Communication::J Society & social sciences::JF Society & culture: general::JFH Popular beliefs & controversial knowledge::JFHF Folklore, myths & legends ; bic Book Industry Communication::J Society & social sciences::JF Society & culture: general::JFS Social groups::JFSL Ethnic studies::JFSL9 Indigenous peoples ; bic Book Industry Communication::J Society & social sciences::JH Sociology & anthropology::JHB Sociology::JHBD Population & demography ; bic Book Industry Communication::J Society & social sciences::JH Sociology & anthropology::JHM Anthropology ; bic Book Industry Communication::P Mathematics & science::PS Biology, life sciences::PSX Human biology::PSXM Medical anthropology
    Language: English
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  • 11
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 187 (1930), S. 1-15 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 4 Ill.
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  • 12
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 188 (1930), S. 200-204 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Die von GORTNER c. s. beschriebenen und gedeuteten Gefrierpunktsunterschiede zwischen Lösungen, die ein hydratiertes Kolloid enthalten und denen ohne Kolloidzusatz, wurden bestätigt. Dieser GORTNER-Effekt verschwindet, sobald man dem Kolloid seine Hydratation mittels hinzugesetzten Tannins entnimmt.
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  • 13
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 188 (1930), S. 309-324 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 17 Ill.
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  • 14
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 188 (1930), S. 290-308 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Messungen von SCHENCK über die Gasgleichgewichte über Eisen, seinen Oxyden und Carbiden werden phasentheoretisch ausgewertet. Hierbei wird die Existenz einer nuen Carbidphase wahrscheinlich gemacht. Bei der Annahme des Carbids ergibt sich die Existenz von 5 Fünfphasengleichgewichten.
    Additional Material: 12 Ill.
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  • 15
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 188 (1930), S. 396-408 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 8 Ill.
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  • 16
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 189 (1930) 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 17
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 187 (1930), S. 337-361 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Hier wird eine direkte potentiometrische Titration durch ein verhältnismäßig luftbeständiges, schwaches Reduktionsmittel, statt des stärkeren, luftunbeständigeren Reagens als Titriermittels, zur Bestimmung gewisser Elemente vorgeschlagen, die auf die Bestimmung von Selen, Tellur und Gold erfolgreich angewandt worden ist.
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  • 18
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 187 (1930), S. 382-384 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 19
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Durch Einleiten von Wasserstoff und gleichzeitige Belichtung mit kurzwelligen Strahlen aus einer Uviol-Tauchlampe der Firma Schott & GEN., Jena, wird die braune Rutheniumlösung, erhalten durch Auflösen von Rutheniumhydroxyd in Salzsäure, zu der wasserhellen bzw. hell orangefarbigen Lösung reduziert.
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  • 20
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 188 (1930), S. 32-36 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 21
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 188 (1930), S. 47-51 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
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  • 22
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 189 (1930), S. 145-167 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wurden Silber-Cadmiumlegierungen von 40% bis 60%, Silbergehalt auf thermischem, elektrischem, volumetrischem und mikrographischem Wege untersucht.
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  • 23
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 189 (1930), S. 183-189 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Ill.
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  • 24
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 189 (1930), S. 196-214 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Es wurden die Reaktionsverhältnisse )(nach der Cl-Entwicklungsgeschwindigkeit beurteilt) zwischen Chromsäure und konz. Salzsäure in Abhängigkeit von Temperatur und Konzentration untersucht. Bei festgelegter Chromatmenge erwies sich die C1-Entwicklungsgeschwindigkeit in einer etwa 20%igen Salzsäurelösung bei gewöhnlicher Temperatur gleich Null. Die Reaktion verläuft erst merklich in einer etwa 25%-HCl-Lösung. Der träge Reaktionsverlauf ist durch Hindernisse bedingt und kann durch Zugabe geeigneter Beschleuniger in entsprechenden Konzentrationen beseitigt werden.
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  • 25
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 189 (1930), S. 258-262 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Die Bedingungen des analytischen Nachweises des Zinns mit der Leuchterscheinung, die seine Halogenverbindungen in der Bunsenflamme geben, werden festgelegt.
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  • 26
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 189 (1930), S. 287-288 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 27
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 189 (1930), S. 305-328 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Beim Erhitzen von KC1 und H3PO4 auf 350° erhält man KPO3.
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  • 28
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 7 Ill.
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  • 29
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 189 (1930), S. 137-144 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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    Zeitschrift für anorganische Chemie 189 (1930), S. 174-182 
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    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Es wird ein Weg angegeben zur präparativen Darstellung der einzelnen reinen Kieselhydrate SiO2·2H2O, 2SiO2·3H2O, SiO2·lH2O und 2SiO2· 1H2O.
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    Zeitschrift für anorganische Chemie 190 (1930), S. 90-94 
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    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Reine Selenbromwasserstoffsäure H2SeBr6 löst sich in Wasser klar und ohne Zersetzung auf. Die von GUTBIER und ENGEROFF beobachtete Bildung von kolloidalem Selen ist auf die leichte Zersetzlichkeit der Selenbromwasserstoffsäure in Diselendibromid zurück- zuführen. Die Salze der Selenbromwasserstoffsäure sind ebenfalls ohne Abscheidung von Selen in Wasser löslich, spalten aber an der Luft, vor allem bei höheren Temperaturen, ebenfalls Brom ab, und können dann Lösungen von kolloidalem Selen liefern.
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    Zeitschrift für anorganische Chemie 190 (1930), S. 145-160 
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    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Graphitsäure ist ein chemisch wohldefinierter Stoff, in welchem das Verhältnis von Kohlenstoff zu Sauerstoff zu Wasserstoff wie 2:1:1 ist.Ihrer Entstehung, ihren Eigenschaften und ihrem ganzem Verhalten nach kommt ihr die Formel C603H3 oder besser C6(OH)3 zu. Die Kohlenstoffatome sind wie im Ausgangsmaterial Graphit und im weiteren Umwandlungsprodukt Mellithsäure in Sechsringen angeordnet, die in der Graphitsäure nebeneinander liegend Waben- ebenen bilden. An jedem Sechsring befinden sich drei Hydroxylgruppen.
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    Zeitschrift für anorganische Chemie 190 (1930), S. 185-187 
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    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die beschleunigende Wirkung des Beizens von zu versilbernden Gläsern mit SnCl2-Lösung beruht auf einer die Ag-Abscheidung befördernden Adsorption von SnO2-Sol. Andere Kolloide vermögen ähnliches zu leisten. Auch die Vergoldung von Glas kann mit SnC12 beschleunigt werden.
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    Zeitschrift für anorganische Chemie 190 (1930), S. 270-276 
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    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Neben den1 Chlor-1-fluorid besteht auch ein Chlor-3-fluorid, welches durch Erhitzen von CI2 oder CIF mit überschüssigem F2 dar- gestellt wird. Die umkehrbare Reaktion CIF + F2 ⇆ CIF3 führt zu einem Gleichgewicht, in dem bei 250° Zahl der CIF-Moleküle ein Mehrfaches der CIF3-Moleküle ist. Die Zusammensetzung des neuen Fluorids is durch Analysen und Dichtebestimmungen sichergestellt. Seine physikalischen und chemischen Eigenschaften werden mit - geteilt.Besonders bemerkenswert ist die Lebhaftigkeit und die Mannigfaltigkeit der Reaktionen des CIF3.
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    Zeitschrift für anorganische Chemie 190 (1930), S. 303-312 
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    Keywords: Chemistry ; Inorganic Chemistry
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    Topics: Chemistry and Pharmacology
    Notes: Bei den Eisenkohlenstofflegierungen ist die Farbe unabhängig vom Kohlenstoffgehalt sowie der Wärmebehandlung.Nur die Intensität der Farbe ist verschieden.Das Klingenmuster der japanischen Schwerter wurde durch die Unterschiede irn Reflexionsvermögen der Gefügebestandteile gut erklärt.
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    Zeitschrift für anorganische Chemie 192 (1930), S. 90-96 
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    Keywords: Chemistry ; Inorganic Chemistry
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    Topics: Chemistry and Pharmacology
    Notes: Ein kurzes Verfahren der Bogenspektrographie wird mitgeteilt.
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    Zeitschrift für anorganische Chemie 191 (1930), S. 49-59 
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    Zeitschrift für anorganische Chemie 191 (1930), S. 65-68 
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    Keywords: Chemistry ; Inorganic Chemistry
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    Zeitschrift für anorganische Chemie 191 (1930), S. 181-193 
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    Zeitschrift für anorganische Chemie 191 (1930), S. 171-180 
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    Keywords: Chemistry ; Inorganic Chemistry
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    Topics: Chemistry and Pharmacology
    Notes: Es wurden Untersuchungen über die Möglichkeit eines inneren Platzwechsels bei Wolframaten und Molybdaten der Erdalkalien und von Zn, Cd, Ni und Mn angestellt. Dabei wurde zunächst eine einfache Methode angegeben, wie man qualitativ sehr geringe Diffusionen bestimmen und die Größenordnung des Diffusionskoeffizienten ermitteln kann. Damit konnten wir finden, daß in den Verbindungen BaWO4, BaMoO4, SrWO4, SrMoO4, CaWO4, CaMoO4, MgWO4 und MgMoO4 bei Temperaturen zwischen 800 und 1000° die Metalle sehr wenig zur Diffusion neigen, daß sie also sehr fest an den Gitterpunkten gebunden sind, während der Säurerest wesentlich leichter wandert. Bei den untersuchten Schwermetallverbindungen nehmen beide Bestandteile ungefähr gleichmäßig an der Diffusion teil, werdenalsoähnlich fest an den Gitterpunkten gehalten.
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    Zeitschrift für anorganische Chemie 192 (1930), S. 366-368 
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    Keywords: Chemistry ; Inorganic Chemistry
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    Zeitschrift für anorganische Chemie 193 (1930), S. 76-80 
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    Zeitschrift für anorganische Chemie 192 (1930), S. 113-122 
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    Zeitschrift für anorganische Chemie 192 (1930), S. 123-128 
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    Zeitschrift für anorganische Chemie 193 (1930), S. 176-186 
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    Topics: Chemistry and Pharmacology
    Notes: Beim Erhitzen von JF5 und F2 entsteht in umkehrbarer Reaktion JE7. Ein gutes Verfahren zur Darstellung und die Ausbeuten Werden mitgeteilt. Das Molekulargewicht ist zu 260 gefunden worden; die analytische. Zusammensetzung entspricht der Formel JF7.
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    Zeitschrift für anorganische Chemie 193 (1930), S. 191-192 
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    Zeitschrift für anorganische Chemie 193 (1930), S. 245-269 
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    Zeitschrift für anorganische Chemie 193 (1930), S. 270-276 
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    Topics: Chemistry and Pharmacology
    Notes: Es sind Debyeaufnahmen von Aluminiumchlorids hergestellt worden. Es ist festgestellt, daß das Element seiner Struktur durch eine hexagonale Zelle dargestellt ist von der rhomboedrischen Packung mit den Parametern \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm a = 3,475} \pm {\rm 0,007 \AA}\frac{{\rm c}}{{\rm a}} = 2,45 \pm 0,01,$$\end{document} die eine AlCl3-Molekel enthält. Die angenäherten Koordinaten des Chlor- und Al-Ionen sind durch die folgenden Zahlen angegeben. Es ist die Verknüpfung zwischen den Eigentümlichkeiten solcher Gitter und den physikalisch-chemischen Eigenschaften von Aluminiumchlorid betrachtet.
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    Zeitschrift für anorganische Chemie 193 (1930), S. 277-296 
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    Keywords: Chemistry ; Inorganic Chemistry
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    Topics: Chemistry and Pharmacology
    Notes: Die rosa sogenannten Manganosulfide, wie sie durch Fällung bei Zimmertemperatur aus einem wäßrigen Reaktionsgemisch mit 0,1 n. Mangankonzentration bei Vewendung von MnSO4 oder MnC12, NH3SH und (NH4)2S, ohne und mit NH3-Zusatz erhalten werden, verhielten sich beim Verweilen unter ihrer Mutterlauge bei Zimmertemperatur und in zerstreutem Tageslicht folgendermaßen:1Sämtliche rosa Niederschläge, erhalten mit NH3-freier NH4SH-Lösung, wobei im Mittel 4,5 Molekeln NH4SH auf 1 Atom Mn im Rgm kamen, zeigten im Mittel am 6. Tage nach ihrer Herstellung stellenweise den Beginn eines Grünüberganges; die Fortpflanzung dieses Grünüberganges erfolgte aber in der Regel mit außerordentlicher Langsamkeit.2Unabhängig vom Grünübergange, gleichzeitig und vie1 rascher als derselbe, erfolgte ein Übergang des Rosa in Orange; letzterer Übergang pflegte im Maximum in 6 Monaten vollständig zu werden, worauf die schwarzgrüne Modifikation sich auf Kosten des Orangen weiterbildete.3Ein Anwachsen der NH4SH-Mengen über die Äquivalenz mit dem Mangan im Rgm bis zu 14 Molekeln auf 1 Atom Mangan änderte die mittlere 6- tägige Beginnzeit des Grünüberganges nicht, beschleunigte aber, und zwar maximal bei rund 4 Molekeln NH4SH auf 1 Atom Mangan im Rgm, die Fortpflanzung dieses Grünüberganges und verzögerte stark den Orangeübergang des rosa Sulfides.
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    Zeitschrift für anorganische Chemie 193 (1930), S. 367-384 
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    Keywords: Chemistry ; Inorganic Chemistry
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    Zeitschrift für anorganische Chemie 193 (1930), S. 391-405 
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    Zeitschrift für anorganische Chemie 193 (1930), S. 420-424 
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    Keywords: Chemistry ; Inorganic Chemistry
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    Topics: Chemistry and Pharmacology
    Notes: Es wurde die spezifische Leitfähigkeit wäßriger Lösungen des Kaliumperrhenats KReO4 bei 18, 25, 30 und 40° und für verschiedene Konzentrationen von 0,04-0,0005 Grammol pro Liter bestimmt, und die molekulare Leitfähigkeit und der Dissoziationsgrad des Salzes sowie die Beweglichkeit des Ions ReO4′ bei verschiedenen Konzentrationen bei 18 und 25° und der Temperaturkoeffizient für die Konzentrationen 0,01 und 0,001 berechnet.
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    Zeitschrift für anorganische Chemie 194 (1930), S. 47-50 
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    Keywords: Chemistry ; Inorganic Chemistry
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    Topics: Chemistry and Pharmacology
    Notes: Es wird der Nachweis geführt, daß in den bei der Zersetzung von Rubidium- und Cäsiumazid verbleibenden Rückständen die Nitride Rb3N und Cs3N dieser Metalle vorhanden sind. Die Rückstände stellen graugrüne, außerordentlich feuchtigkeitsempfindliche Pulver dar, die von Wasser sofort nach zerlegt werden. Von Interesse wäre es noch, die Frage zu klären, ob bei den Alkalimetallen noch andere Stickstoffverbindungen existieren, die etwa bei der Hydrolyse Anlaß zum Auftreten der beobachteten reduzierenden Verbindung geben.
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    Zeitschrift für anorganische Chemie 194 (1930), S. 239-257 
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    Keywords: Chemistry ; Inorganic Chemistry
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    Topics: Chemistry and Pharmacology
    Notes: 1. Es wurden die Bedingungen der Fällung des Ammoniumphosphormolybdates in Anwesenheit von Weinsäure untersucht.
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    Zeitschrift für anorganische Chemie 194 (1930), S. 73-88 
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    Zeitschrift für anorganische Chemie 194 (1930), S. 147-150 
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    Zeitschrift für anorganische Chemie 194 (1930), S. 159-161 
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    Zeitschrift für anorganische Chemie 194 (1930), S. 223-238 
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    Topics: Chemistry and Pharmacology
    Notes: 1. Im System Cd—Mg existieren zwei Mischkristallreihen mit hexagonaler dichtester Kugelpackung, von welchen die eine, α, das Achsenverhältnis 1,89, die andere, β, das Achsenverhältnis 1,62 bei allen Konzentrationen beibehält.
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    Zeitschrift für anorganische Chemie 194 (1930), S. 258-260 
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    Zeitschrift für anorganische Chemie 194 (1930), S. 261-267 
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    Zeitschrift für anorganische Chemie 194 (1930), S. 278-292 
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    Topics: Chemistry and Pharmacology
    Notes: Die Ursachen für die Widersprüche zwischen den Angaben von PICCINI-MARINO und RUTTER für die Herstellung von Vanadosulfaten werden aufgeklärt und auf die Nichtbeachtung der Schwefelsäure-Konzentration zurückgeführt.
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    Zeitschrift für anorganische Chemie 195 (1931), S. 41-59 
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    Zeitschrift für anorganische Chemie 195 (1931), S. 105-112 
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    Zeitschrift für anorganische Chemie 194 (1930), S. 358-368 
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    Notes: Das System [Co(NH3)5Cl]Cl2 + 2HBr ⇄ [Co(NH3)5CI]Br2 + 2HCl wurde untersucht.
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    Zeitschrift für anorganische Chemie 195 (1931) 
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    Zeitschrift für anorganische Chemie 195 (1931), S. 35-40 
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    Notes: Durch Versuche wurde ermittelt, daß1der Dampfdruck von Zinnsulfür beim Erhitzen in Gegenwart von Erdalkalien sich sehr stark erniedrigt,2dabei Thioxystannite von der Zusammensetzung SnS·2CaO, SnS·2SrO und SnS·2BaO entstehen.3Es wurden ferner die Darstellungsmethoden dieser Salze angegeben und einige ihrer Eigenschaften beschrieben.
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    Zeitschrift für anorganische Chemie 195 (1931), S. 61-74 
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    Zeitschrift für anorganische Chemie 195 (1931), S. 75-82 
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    Notes: 1. Potentiometrisch kann Jodid entweder so bestimmt werden, daß man unter Zugabe von Tetrachlorkohlenstoff bis zum ersten Wendepunkt beim Verbrauch von 1 Val Permanganat auf 1 Mol Jodid titriert oder ohne Zusatz bis zum zweiten Wendepunkt, der beim doppelten Verbrauch eintritt. Sind auf 1 Mol Jodid nicht mehr als 10 Mol Bromid vorhanden, so ist die erste Art unbedingt genauer; bei höheren Bromidüberschüssen hängt es von den Eigenschaften des benutzten Potentiometers ab, welches Verfahren bessere Ergebnisse liefert.
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    Zeitschrift für anorganische Chemie 195 (1931), S. 127-128 
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    Zeitschrift für anorganische Chemie 195 (1931), S. 338-338 
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    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Zeitschrift für anorganische Chemie 195 (1931), S. 239-240 
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    Keywords: Chemistry ; Inorganic Chemistry
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    Zeitschrift für anorganische Chemie 195 (1931), S. 247-254 
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    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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    Zeitschrift für anorganische Chemie 195 (1931), S. 269-287 
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    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Es werden für die Bildung von Siliciumtetrachlorid aus Kieselsäure, Kohle und Chlor die für die verschiedenen Modifikationen notwendigen Temperaturen bestimmt: Amorphe Kieselsäure (aus Alkalisilicatlösung gefällt, bzw. durch Hydrolyse von Siliciumfluorid gewonnen, bei Dunkelrotglut entwässert) = 740°, Tridymit = 1060 bis 1070°, Cristobalit = 1060-1070°, Quarz = 1220°.
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    Zeitschrift für anorganische Chemie 185 (1930), S. 239-253 
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    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Reines Natriumhydrid wurde aus einem technischen Produkt hergestellt. Seine Eigenschaften werden näher beschrieben.
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    Zeitschrift für anorganische Chemie 185 (1930), S. 254-266 
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    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Bildungswärme des reinen Natriumhydrids wurde calorimetrisch aus der Differenz der Lösungswärmen des Natriums (44,38 ± 0,21 kcal) und des Natriumhydrids (31,57 ± 0,15 kcal) in Wasser bestimmt. Das Mittel der Bestimmungen liegt bei Q = 12,8 kcal für die Bildung von 1 Mol NaH aus festem Na und gasförmigem H2.
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    Zeitschrift für anorganische Chemie 185 (1930), S. 305-323 
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    Keywords: Chemistry ; Inorganic Chemistry
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    Topics: Chemistry and Pharmacology
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    Zeitschrift für anorganische Chemie 185 (1930), S. 333-336 
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    Keywords: Chemistry ; Inorganic Chemistry
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    Zeitschrift für anorganische Chemie 185 (1930), S. 403-412 
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    Keywords: Chemistry ; Inorganic Chemistry
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    Topics: Chemistry and Pharmacology
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    Zeitschrift für anorganische Chemie 185 (1930), S. 417-424 
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    Keywords: Chemistry ; Inorganic Chemistry
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    Zeitschrift für anorganische Chemie 186 (1930), S. 257-288 
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    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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    Zeitschrift für anorganische Chemie 186 (1930), S. 357-364 
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    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Die Adsorption von Ameisen-, Monochloressig-, Essig-, Butter-, Propion-, Milch-, Aminoessig-, Aminopropion-, Benzoe-, o-, m- und p-Aminobensoesäure durch frischgefälltes Zirkonhydroxyd wurde untersucht.
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    Zeitschrift für anorganische Chemie 186 (1930), S. 373-386 
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    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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    Zeitschrift für anorganische Chemie 187 (1930) 
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    Zeitschrift für anorganische Chemie 187 (1930), S. 24-28 
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    Keywords: Chemistry ; Inorganic Chemistry
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    Topics: Chemistry and Pharmacology
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    Zeitschrift für anorganische Chemie 187 (1930), S. 75-96 
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    Keywords: Chemistry ; Inorganic Chemistry
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    Topics: Chemistry and Pharmacology
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    Zeitschrift für anorganische Chemie 187 (1930), S. 127-128 
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    Keywords: Chemistry ; Inorganic Chemistry
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    Zeitschrift für anorganische Chemie 187 (1930), S. 129-154 
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    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Es wurden die Gleichgewichte zwischen Thallium und Blei mit Thallium (1) chlorid und Bleichlorid irn Schmelzfluß untersucht.
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    Zeitschrift für anorganische Chemie 187 (1930), S. 165-176 
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    Keywords: Chemistry ; Inorganic Chemistry
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    Zeitschrift für anorganische Chemie 187 (1930), S. 193-208 
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    Keywords: Chemistry ; Inorganic Chemistry
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    Topics: Chemistry and Pharmacology
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    Zeitschrift für anorganische Chemie 187 (1930), S. 237-240 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Die Niederschläge, welche man erhält durch Oxydation und Photooxydation von Ammoniumrhodanid, sind Gemische verschiedener Zusammensetzung, welche abhängig ist:a)von der Stärke der benutzten Lösung undb)von der Menge des als Verunreinigung vorhandenen Eisens.
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    Zeitschrift für anorganische Chemie 187 (1930), S. 289-312 
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    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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    Zeitschrift für anorganische Chemie 187 (1930), S. 313-320 
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    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Manganifluorid gibt mit Fluoriden von organischen Basen zwei Typen Doppelfluoride, nämlich MMnF4 · nH2O und M2MnF5. Der letztere Typus ist mit den vorher erhaltenen Alkalimenganifluoriden analog, während der erstere einen neuen Typus repräsentiert, welcher bei organischen Basen unzweifelhaft vorherrschend ist. Die Verbindungen beider Serien haben rote Farbe, zeigen aber sowohl in Alkohol als auch in Eisessig ganz verschiedene Löslichkeit. Übrigens sind diese Fluoride bedeutend beständiger als die entsprechenden Doppelchloride von 3-wertigem Mangan.
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    Zeitschrift für anorganische Chemie 187 (1930), S. 362-368 
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    Keywords: Chemistry ; Inorganic Chemistry
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    Zeitschrift für anorganische Chemie 187 (1930), S. 379-381 
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    Keywords: Chemistry ; Inorganic Chemistry
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    Zeitschrift für anorganische Chemie 187 (1930), S. 385-397 
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    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Durch eine Reihe neuerer Arbeiten war ermittelt worden, daß nur 3 Hydrate des Arsenpentoxyds, nämlich As2O5 · 7H2O, As2O5 · 4H2O und 3 As2O5 · 5H2O, existenzfähig sind. Im Gegensatz zu diesen Befunden ist bei obigen Versuchen durch Eindampfen von wäßrigen Lösungen von As2O5 bis 180° entsprechend den Angaben von E. KOPP das kristallisierte Hydrat As2O5 · 2H2O isoliert worden. Durch Bestimmung der Entwässerung wurde festgestellt, daß das Wasser konstitutiv gebunden ist und mithin die Pyroarsensäure, H4As2O7, vorliegt.
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    Zeitschrift für anorganische Chemie 188 (1930) 
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    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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    Zeitschrift für anorganische Chemie 188 (1930), S. 37-46 
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    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Rhodanwasserstoffsäure und Rhodanammonium lassen sich ohne Zersetzung verdampfen, wenn die wäßrige Lösung der Säure oder des Salzes in erhitzte Gefäße eingetropft oder mittels heißer Luft oder überhitztem Dampf eingesprüht wird.
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    Zeitschrift für anorganische Chemie 188 (1930), S. 60-71 
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    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wird eine konduktometrische (Kapitel I C und D) und eine potentiometrische (Kapitel II B und C) Methode zur Analyse von Nitriersäuren gegeben.
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    Zeitschrift für anorganische Chemie 188 (1930), S. 72-89 
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    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Durch Abkühlungskurven wurde festgestellt, daß N aOH und NaNO3 zwei Verbindungen 2 NaOH.NaN03 und NaOH · NaNO3 mit- einander bilden. Das gesamte Löslichkeitsbild im System NaOH- NaN03-H20 wurde unter Benützung der bekannten Löslichkeitsuntersuchungen, die sich bis 65° erstrecken, festgestellt, indem Iso- thermen bei 100° und 125° und Abkühlungskurven bestimmter Gemische aufgenommen wurden. Es zeigte sich, daß die Doppelsalze früher in den Lösungen nicht gefunden werden konnten, weil der Gehalt an NaOH nicht hoch genug und auch die Temperatur zu niedrig gewählt wurde. Das im regulären Dreieck dargestellte Zustandsbild, das die Löslichkeit darstellt, kann in drei Teile zerlegt werden. Ein ternares Eutektikum bildet sich aus den drei Verbindungen NaOH, NaOH · H3O und 2 NaOH · NaNO3 · Untersucht wurden ferner die Siedeerscheinungen, die dadurch besonders interessant waren, daß sich im Dreieck zwei Gebiete ergaben von Ge- mischen, die bei Sättigung nur unter höherem Dampfdruck als einer Atmosphäre sieden können. Es findet ein Zusammenfließen der sogenannten ersten und zweiten Siedekurve statt. Das erste Gebiet liegt vollständig im Sättigungsfeld von NaNO3, das zweite in dem des Doppelsalzes NaOH · NaNO3 · Außer den Siedeerscheinungen, die besondere Eigentümlichkeit in gewissen Gebieten zeigen, wurden auch die Dampfdrucke der gesättigten Lösungen untersucht und ein vollständiges Bild der Dampfdrucke aller gesättigten Lösungen gegeben.
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    Zeitschrift für anorganische Chemie 188 (1930), S. 143-151 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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