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Showing 10,026 through 10,050 of 100,000 results

Auswirkungen von Mikroplastik auf die Grünlippmuschel Perna viridis (BestMasters)

by Sinja Rist

Sinja Rist untersucht die Auswirkungen von Mikroplastik, das in marinen Sedimenten weltweit verbreitet ist, auf die Grünlippmuschel Perna viridis. Sie zeigt, dass nach einer 6-wöchigen Exposition im Labor mit steigender Partikelzahl starke Einschränkungen physiologischer Funktionen wie Filtration, Atmung, Bewegung und Byssusproduktion sowie eine erhöhte Mortalität auftreten. Signifikante Effekte waren dabei schon bei geringen Partikelmengen messbar. Insgesamt lassen die Ergebnisse dieser Studie auf eine deutliche Dezimierung der Energiereserven der Muscheln schließen. Die Kontamination der Partikel mit dem organischen Schadstoff Fluoranthen hatte dagegen keinen eindeutig messbaren Effekt auf die Tiere. Diese Studie verdeutlicht, dass im Angesicht einer steigenden Mikroplastikbelastung benthischer Habitate mit diversen Auswirkungen auf die Organismen gerechnet werden muss.

Auszüge aus James Clerk Maxwells Elektrizität und Magnetismus

by Fritz Emde

Dieser Buchtitel ist Teil des Digitalisierungsprojekts Springer Book Archives mit Publikationen, die seit den Anfängen des Verlags von 1842 erschienen sind. Der Verlag stellt mit diesem Archiv Quellen für die historische wie auch die disziplingeschichtliche Forschung zur Verfügung, die jeweils im historischen Kontext betrachtet werden müssen. Dieser Titel erschien in der Zeit vor 1945 und wird daher in seiner zeittypischen politisch-ideologischen Ausrichtung vom Verlag nicht beworben.

Autecology: Organisms, Interactions and Environmental Dynamics

by Gimme H. Walter Rob Hengeveld

This book spells out the theoretical structure, methodology and philosophy of the science of autecology. The autecological approach focuses on the interactions of individual organisms (and their species-specific adaptations) with the spatio-temporal dynamics of their environment as a basis for interpreting patterns of diversity and abundance in nat

Authentic School Science: Knowing and Learning in Open-Inquiry Science Laboratories (Contemporary Trends and Issues in Science Education #1)

by Wolff-Michael Roth

According to John Dewey, Seymour Papert, Donald Schon, and Allan Collins, school activities, to be authentic, need to share key features with those worlds about which they teach. This book documents learning and teaching in open-inquiry learning environments, designed with the precepts of these educational thinkers in mind. The book is thus a first-hand report of knowing and learning by individuals and groups in complex open-inquiry learning environments in science. As such, it contributes to the emerging literature in this field. Secondly, it exemplifies research methods for studying such complex learning environments. The reader is thus encouraged not only to take the research findings as such, but to reflect on the process of arriving at these findings. Finally, the book is also an example of knowledge constructed by a teacher-researcher, and thus a model for teacher-researcher activity.

Authenticity: The Cultural History of a Political Concept

by Maiken Umbach Mathew Humphrey

Authenticity is everywhere: political leaders invoke the idea to gain our support, advertisers use it to sell their products. But is authenticity a dangerous hoax? What is, and is not, authentic has been hotly debated ever since the concept was invented. Many academics have sought to "unmask" authenticity claims as deceptive. This book takes a different approach. In chapters covering historical and contemporary examples, the authors explore why authenticity, real or imagined, exercises such a powerful hold on our imaginations. The chapters trace how invocations of authenticity borrow from one another, across arenas such as philosophy and theology, encounters with nature, leisure, and mass consumption, political and corporate leadership, left-wing and right-wing ideologies. This cultural history of authenticity is of interest to academic and lay readers alike, who are interested in the significance and history of a concept that shapes how we understand ourselves and the world we live in.

Authenticity: The Cultural History of a Political Concept

by Maiken Umbach Mathew Humphrey

Authenticity is everywhere: political leaders invoke the idea to gain our support, advertisers use it to sell their products. But is authenticity a dangerous hoax? What is, and is not, authentic has been hotly debated ever since the concept was invented. Many academics have sought to "unmask" authenticity claims as deceptive. This book takes a different approach. In chapters covering historical and contemporary examples, the authors explore why authenticity, real or imagined, exercises such a powerful hold on our imaginations. The chapters trace how invocations of authenticity borrow from one another, across arenas such as philosophy and theology, encounters with nature, leisure, and mass consumption, political and corporate leadership, left-wing and right-wing ideologies. This cultural history of authenticity is of interest to academic and lay readers alike, who are interested in the significance and history of a concept that shapes how we understand ourselves and the world we live in.

Authenticity of Foods of Animal Origin

by Ioannis Sotirios Arvanitoyannis

Over the last 20-30 years the number of food poisoning incidents has increased considerably and this has had disastrous effects both on consumers and the food industry. Several food industries went bankrupt due to huge amounts of money paid to compensate consumers' family/relatives. These unfortunate incidents triggered consumer and governmental aw

Authenticity of Foods of Plant Origin (Food Biology Series)

by Konstantinos Kotsanopoulos

Food is adulterated to increase profit or due to negligence. Adulteration can compromise food safety and quality, and harm consumers. This may undermine consumer trust and the reputation of the food industry. As such, it is very important to monitor, control and detect adulteration. A number of techniques have been developed for the authentication of food and verifying its quality and associated claims. Foods of plant origin are the source of nutrients for billions of people around the globe. Due to the huge variety of plants, and the lack of visual characteristics as a result of processing, advanced techniques are required to detect adulteration. This book reviews the latest developments in the field of authenticity of foods of plant origin, examining concepts such as traceability, and how they are applied to facilitate the support of claims, as well as legislative requirements in the major economies around the world. The basic techniques used nowadays in verifying authenticity of these types of foods are reviewed and discussed, and their applications are summarized. The book also focuses on categories of foods most prone to adulteration attempts due to their characteristics, properties and production methods commonly followed, thus allowing the reader to more easily identify the chapter that is of interest in each case. The book will be of interest to food industrialists, chemists, quality control scientists and technologists, microbiologists, analytical chemists and food physical chemists within the food industry. It is also aimed at academicians who are interested in the authenticity of foods of plant origin and the advancements in the analytical fields that support relevant legal and marketing requirements.

Authenticity of Foods of Plant Origin (Food Biology Series)

by Konstantinos Kotsanopoulos

Food is adulterated to increase profit or due to negligence. Adulteration can compromise food safety and quality, and harm consumers. This may undermine consumer trust and the reputation of the food industry. As such, it is very important to monitor, control and detect adulteration. A number of techniques have been developed for the authentication of food and verifying its quality and associated claims. Foods of plant origin are the source of nutrients for billions of people around the globe. Due to the huge variety of plants, and the lack of visual characteristics as a result of processing, advanced techniques are required to detect adulteration. This book reviews the latest developments in the field of authenticity of foods of plant origin, examining concepts such as traceability, and how they are applied to facilitate the support of claims, as well as legislative requirements in the major economies around the world. The basic techniques used nowadays in verifying authenticity of these types of foods are reviewed and discussed, and their applications are summarized. The book also focuses on categories of foods most prone to adulteration attempts due to their characteristics, properties and production methods commonly followed, thus allowing the reader to more easily identify the chapter that is of interest in each case. The book will be of interest to food industrialists, chemists, quality control scientists and technologists, microbiologists, analytical chemists and food physical chemists within the food industry. It is also aimed at academicians who are interested in the authenticity of foods of plant origin and the advancements in the analytical fields that support relevant legal and marketing requirements.

Authentische Aufgaben im theoretischen Bereich von Instruktions- und Lehr-Lern-Forschung

by Jochen Kuhn

Jochen Kuhn stellt einen Ansatz zum aufgabenorientierten Lernen mit kontextorientierten Aufgabenstellungen zu Zeitungsartikeln im Physikunterricht vor. Die empirischen Ergebnisse zeigen neben der schulartübergreifenden Effektivität sowie einer zeitlichen Nachhaltigkeit von „Zeitungsaufgaben“ auch Optimierungsmöglichkeiten dieser Lernmedien.

Author and Subject Indexes to Volumes 1–10 Literature 1969–1973 (Astronomy and Astrophysics Abstracts #15/16)

by S. Böhme U. Esser W. Fricke U. Güntzel-Lingner I. Heinrich Frieda Henn D. Krahn L. Schmadel H. Scholl G. Zech

Astronomy and Astrophysics Abstracts, which has appeared in semi-annual volumes since 1969, is devoted to the recording, summarizing and indexing of astronomical publications through­ out the world. It is prepared under the auspices of the Interna­ tional Astronomical Union (according to a resolution adopted at the 14th General Assembly in 1970). Astronomy and Astrophysics Abstracts aims to present a com­ prehensive documentation of literature in all fields of astronomy and astrophysics. Volume 15/16 contains author and subject indexes of volumes 1 - 10, covering the literature from 1969 to 1973. It is a pleasure to express our warmest thanks to Miss Helga Ballmann, Mrs. Monika Betz, Dr. Siegfried B6hme, Mrs. Karola Gud6, Miss Lore Kiefert, and Mrs. Ingrid Wolf for their kind support in the preparation of the indexes. Heidelberg, June 1976 Ute Esser Inge Heinrich Frieda Henn Dietlinde Krahn Hans Scholl Gert Zech v Introduction The Author Index contains 110 180 references to publications initial letter following the first names. of 28654 different authors. The Subject Index contains 38145 An effort has been made to cite Russian names according to references to 7170 different key words. the following transliteration: The main characteristics of the concept of Astronomy and r Astrophysics Abstracts, Author and Subject Indexes may be A a P p a summarized briefly.

Author, Subject, and Object Indexes (Astronomy and Astrophysics Abstracts #59/60)

by I. Heinrich L. D. Schmadel

Astronomy and Astrophysics Abstracts aims to present a comprehensive documentation of the literature concerning all aspects of astronomy, astrophysics, and their border fields. It is devoted to the recording, summarizing, and indexing of relevant publications throughout the world. Astronomy and Astrophysics Abstracts is prepared by a special department of the Astronomisches Rechen-Institut under the auspices of the International Astronomical Union.Volume 59/60 - the fifth Cumulative Index of Astronomy and Astrophysics Abstracts - comprises author, subject, and object indexes to volumes 49 - 58. Thus, the astronomical and astrophysical literature of the five-year period 1989 - 1993 is covered by this volume.

Author, Subject, and Object Indexes to Volumes 37–46. Literature 1984–1988 (Astronomy and Astrophysics Abstracts #47/48)

by Inge Heinrich Lutz Schmadel Master

From the reviews: "Astronomy and Astrophysics Abstracts has appeared in semi-annual volumes since 1969 and it has already become one of the fundamental publications in the fields of astronomy, astrophysics and neighbouring sciences. It is the most important English-language abstracting journal in the mentioned branches. ...The abstracts are classified under more than a hundred subject categories, thus permitting a quick survey of the whole extended material. The AAA is a valuable and important publication for all students and scientists working in the fields of astronomy and related scienes. As such it represents a necessary ingredient of any astronomical library all over the world." Space Science Review1"Dividing the whole field plus related subjects into 108 categories, each work is numbered and most are accompanied by brief abstracts. Fairly comprehensive cross-referencing links relevant papers to more than one category, and exhaustive author and subject indices are to be found at the back, making the catalogues easy to use. The series appears to be so complete in its coverage and always less than a year out of date that I shall certainly have to make a little more space on those shelves for future volumes." The Observatory Magazine2

Authority in Islam: From Mohammed to Khomeini

by Mehdi Mozaffari

This text looks at the future orientation of the People's Liberation Army. It covers military leadership, readiness and expenditure, defense doctrine, high-tech warfare acquisitions, the scientific and technological base for defense procurement and China's security concerns in Northeast Asia.

Authority in Islam: From Mohammed to Khomeini

by Mehdi Mozaffari

This text looks at the future orientation of the People's Liberation Army. It covers military leadership, readiness and expenditure, defense doctrine, high-tech warfare acquisitions, the scientific and technological base for defense procurement and China's security concerns in Northeast Asia.

Autism: Neural Basis and Treatment Possibilities (Novartis Foundation Symposia #251)

by Gregory R. Bock Jamie A. Goode

This book draws together contributions from some of the leading investigators in the field of autism to consider specific problem areas in current research. Each contributor brings expertise from a different field, providing a balanced view of the whole spectrum of study of this disorder. It covers four main areas: Twin and family studies indicate that the heritability of the underlying liability to autism exceeds 90% and point to a multifactorial causation, involving a relatively small number of susceptibility genes. The book discusses this issue in detail, along with the problem of why some additional symptoms are associated with autism while others are not. New techniques are available for examining the neurobiology of autism. The book contains results from imaging studies showing the contributions of different brain regions to autism. It includes neuropathological data and examines the neuropharmacology of autism. There is considerable discussion concerning the fundamental psychological deficit in children with autism. There is good evidence that "Theory of Mind" deficits are associated with autism and this issue is discussed in the book, as are other competing possibilities. The most important practical question facing medical and psychological practitioners is how to help children with autism. The evidence relating to possible psychological or psychiatric interventions for rehabilitation of children with autism is examined in detail. Drug treatments have generally been disappointing in this field and there is one chapter devoted specifically to this problem. The book focusses ultimately on intervention studies and so is of practical relevance to people interested in helping autistic children. In addition, it provides a very convenient summary of the principal controversies which currently exist in research on autism.

Autism: A Reappraisal of Concepts and Treatment (Child Behavior and Development)

by Michael Rutter Eric Schopler

This volume aims to provide the reader with an up-to-date account of knowledge, research, education, and clinical practice in the field of au­ tism, from an international perspective. The emphasis throughout is on the growing points of knowledge and on the new developments in prac­ tice. We have tried to keep a balance between the need for rigorous research and systematic evaluation and the importance of expressing new ideas and concepts so that they may influence thinking at a stage when questions are being formulated and fresh approaches to treatment are being developed. The book had its origins in the 1976 International Symposium on Autism held in St. Gallen, Switzerland but it is not in any sense a proceed­ ings of that meeting. Most papers have been extensively rewritten to provide a fuller coverage of the topic and also to take account of the issues raised at the meeting. Discussion dialogues have been revised and re­ structured to stand as self-contained chapters. Many significant contribu­ tions to the conference have not been induded in order to maintain the balance of a definitive review; however a few extra chapters have been added to fill crucial gaps 0 We hope the result is a vivid picture ofthe current state of the art. As editors we have been most impressed by the advances since the 1970 international conference in London.

Autism: The Movement Sensing Perspective (Foundations and Innovations in Neurobiology)

by Elizabeth B. Torres Caroline Whyatt

Autism: The Movement Sensing Perspective is the result of a collaborative effort by parents, therapists, clinicians, and researchers from all disciplines in science including physics, engineering, and applied mathematics. This book poses questions regarding the current conceptualization and approach to the study of autism, providing an alternative unifying data-driven framework grounded in physiological factors. This book reaches beyond subjective descriptions of autistic phenomena and embraces a new era of objective measurements, analyses, and statistical inferences. The authors harness activities from the nervous systems across the brain and body (often in tandem), and introduce a platform for the comprehensive personalized phenotyping of individuals with autism. The impact of this approach is discussed to advance the development of tailored treatments options, enhance the ability to longitudinally track symptomatology, and to fundamentally empower affected individuals and their families. This book encompasses a new era for autism research and treatments, and our continuous effort to collectively empower and embrace the autistic community.

Autism: The Movement Sensing Perspective (Frontiers in Neuroscience)

by Elizabeth B. Torres Caroline Whyatt

Autism: The Movement Sensing Perspective is the result of a collaborative effort by parents, therapists, clinicians, and researchers from all disciplines in science including physics, engineering, and applied mathematics. This book poses questions regarding the current conceptualization and approach to the study of autism, providing an alternative unifying data-driven framework grounded in physiological factors. This book reaches beyond subjective descriptions of autistic phenomena and embraces a new era of objective measurements, analyses, and statistical inferences. The authors harness activities from the nervous systems across the brain and body (often in tandem), and introduce a platform for the comprehensive personalized phenotyping of individuals with autism. The impact of this approach is discussed to advance the development of tailored treatments options, enhance the ability to longitudinally track symptomatology, and to fundamentally empower affected individuals and their families. This book encompasses a new era for autism research and treatments, and our continuous effort to collectively empower and embrace the autistic community.

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