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Den Grundoperationen der mechanischen Verfahrenstechnik liegen in vielen Fällen immer wiederkehrende physikalische Vorgänge zugrunde: die Sinkbewegung von Partikeln in gasförmiger oder flüssiger Umgebung, die Durchströmung von Partikelschichten oder die Erzeugung neuer Grenzflächen. Entsprechend werden in diesem Buch mechanische Verfahren, die auf gemeinsamen physikalischen Prinzipien beruhen, konsequent auch in gemeinsamen Kapiteln zusammengefasst. So kann der Leser ein tiefes Verständnis für die zugrunde liegenden Gesetzmäßigkeiten entwickeln und wird in die Lage versetzt, auch komplex zusammengesetzte Verfahrensschritte zu analysieren oder zu entwickeln und die für ein gegebenes Problem am besten geeignete Lösung zu finden. In diversen Exkursen werden speziell benötigte und außerfachliche Grundlagen vorgestellt bzw. wiederholt. Zahlreiche Übungsaufgaben mit vollständig durchgerechneten Lösungen unterstützen die Vermittlung des Lehrstoffes.
Particles. --- Size of particles --- Clay --- Colloids --- Sand --- Soils --- Grammar, Comparative and general Particles --- Particles --- Grammar, Comparative and general --- Function words
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Hypericum extract preparations are used extensively in many countries to treat mildly to moderately depressed patients. While this was based previously on traditional experience, extensive research over the last 10 years has given a broad preclinical and clinical basis to justify the use of Hypericum as an antidepressant. This book reviews the available data related to the biochemical, functional, and behavioural pharmacology of Hypericum and its active constituents. The clinical chapters overview the evidenced basis for its use as an antidepressant, initial data in anxiety and somatoform disorders, and the site effect profile of Hypericum and its possible relevant drug interactions. The known pharmacokinetics of the relevant constituents and the biopharmaceutical quality of commercially available Hypericum preparations are also discussed.
Hypericum perforatum --- Affective disorders --- Therapeutic use. --- Treatment. --- Disorders, Affective --- Mood disorders --- Psychology, Pathological --- Common Saint Johnswort --- Klamath weed --- Perforate Saint Johnswort --- Saint Johns-wort, Common --- Saint Johnswort, Common --- St. Johnswort, Common --- Tipton's weed --- Hypericum --- Toxicology. --- Neurosciences. --- Neurology. --- Psychiatry. --- Psychotherapy. --- Biochemistry. --- Pharmacology/Toxicology. --- Plant Biochemistry. --- Biological chemistry --- Chemical composition of organisms --- Organisms --- Physiological chemistry --- Biology --- Chemistry --- Medical sciences --- Psychagogy --- Therapy (Psychotherapy) --- Mental illness --- Clinical sociology --- Mental health counseling --- Medicine and psychology --- Mental health --- Medicine --- Nervous system --- Neuropsychiatry --- Neural sciences --- Neurological sciences --- Neuroscience --- Chemicals --- Pharmacology --- Poisoning --- Poisons --- Composition --- Treatment --- Diseases --- Toxicology --- Pharmacology. --- Neurology . --- Psychotherapy . --- Plant biochemistry. --- Phytochemistry --- Plant biochemistry --- Plant chemistry --- Biochemistry --- Botany --- Phytochemicals --- Plant biochemical genetics --- Drug effects --- Medical pharmacology --- Chemotherapy --- Drugs --- Pharmacy --- Physiological effect
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This book presents results of a cross-national research project on self-employment in eleven advanced economies and demonstrates how and why the practice is reemerging in modern societies. While traditional forms of self-employment, such as skilled crafts work and shop keeping, are in decline, they are being replaced by self-employment in both professional and unskilled occupations. Differences in self-employment across societies depend on the extent to which labor markets are regulated and the degree to which intergenerational family relationships are a primary factor structuring social organization. For each of the eleven countries analyzed, the book highlights the extent to which social background, educational attainment, work history, family status, and gender affect the likelihood that an individual will enter--and continue--a particular type of self-employment. While involvement with self-employment is becoming more common, it is occurring for individuals in activities that are more diverse, unstable and transitory than in years past.
Self-employed. --- Equality. --- Social status. --- Travailleurs indépendants --- Egalité (Sociologie) --- Statut social --- Travailleurs indépendants --- Egalité (Sociologie) --- Social standing --- Socio-economic status --- Socioeconomic status --- Standing, Social --- Status, Social --- Egalitarianism --- Inequality --- Social equality --- Social inequality --- Free-lancers --- Freelancers --- Power (Social sciences) --- Prestige --- Political science --- Sociology --- Democracy --- Liberty --- Persons
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This volume examines the role of education in shaping rates and patterns of intergenerational social mobility among men and women during the twentieth century. Focusing on the relationship between a person's social class and the social class of his or her parents, each chapter looks at a different country—the United States, Sweden, Germany, France, the Netherlands, Italy, Spain, and Switzerland. Contributors examine change in absolute and relative mobility and in education across birth cohorts born between the first decade of the twentieth century and the early 1970s. They find a striking similarity in trends across all countries, and in particular a contrast between the fortunes of people born before the 1950s, those who enjoyed increasing rates of upward mobility and a decline in the strength of the link between class origins and destinations, and later generations who experienced more downward mobility and little change in how origins and destinations are linked. This volume uncovers the factors that drove these shifts, revealing education as significant in promoting social openness. It will be an invaluable source for anyone who wants to understand the evolution of mobility and inequality in the contemporary world.
Educational mobility --- Social mobility --- History --- E-books --- Mobility, Social --- Sociology --- Education mobility --- Mobility, Educational --- Europe. --- United States. --- class mobility. --- education. --- educational expansion. --- intergenerational mobility. --- structural change.
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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
neurodegenerative diseases --- aging --- Parkinson's disease --- Alzheimer's disease --- neurodegeneration --- β-amyloid --- Aβ
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Afroasiatic languages --- Congresses. --- Hamitic languages --- Semitic languages --- -Afrasian languages --- Afro-Asiatic languages --- Erythraic languages --- Hamito-Semitic languages --- Semito-Hamitic languages --- Congresses --- Langues chamito-sémitiques --- Congrès --- Semitische talen. Taalwetenschap. (Congres) --- Afrikaanse talen. Taalwetenschap. (Congres) --- Oosterse talen. Taalwetenschap. (Congres) --- Hamietische talen. Taalwetenschap. (Congres) --- Sémitiques (Langues). Linguistique. (Congrès) --- Ethiopiennes (Langues). Linguistique. (Congrès) --- Negro-africaines (Langues). Linguistique. (Congrès) --- Langues orientales. Linguistique. (Congrès) --- Hamitiques (Langues). Linguistique. (Congrès) --- Ethiopische talen. Taalwetenschap. (Congres) --- Afrasian languages
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