Die Wirkung Von Substanzen Auf Den Netzbau Der Spinne Als Biologischer Test
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Die Wirkung Von Substanzen Auf Den Netzbau Der Spinne Als Biologischer Test
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Author : Peter Nikolaus Witt
language : de
Publisher: Springer-Verlag
Release Date : 2013-07-02
Die Wirkung Von Substanzen Auf Den Netzbau Der Spinne Als Biologischer Test written by Peter Nikolaus Witt and has been published by Springer-Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-07-02 with Science categories.
2 fehlte bisher. Auf Grund der Übersicht sollte es möglich sein, eine unbekannte Substanz einzuordnen, wenn sie eine Wirkung auf den Netzbau der Spinne zeigt. Dies scheint besonders wichtig im Hinblick auf das aktuelle Problem der biologi schen Testung von Körperflüssigkeiten Geisteskranker; wird doch von vielen die Hypothese vertreten, daß bei Geisteskrankheiten, oder zumindest bei den in ihrem Verlauf auftretenden Delirien, im pathologisch veränderten Stoffwechsel des Men schenhalluzinogene Substanzen auftreten ( GERARD 1955; W ITT 1956a ). Verdächtigt wurden dabei alle jene Substanzen, die beim Gesunden delirienähnliche Zustände verursachen und die Stoffen ähnlich sehen, die schon im normalen Stoffwechsel auftreten. Bisher ist aber niemals eine solche Substanz im Körper eines kranken Menschen nachgewiesen worden (KEUP 1954). Die Spinnen reagieren nun auf eine ganze Reihe der verdächtigen Substanzen in ihrem Netzbau spezifisch. So zeigten sie Netzbauveränderungen nach Mescalin (WITT 1954), dem zusammen mit 3,5 Dijod-4-methoxy-phenäthylamin nach JATZKEWITZ u. NoESKE (1951) als vielleicht im Körper entstehendes biogenes Amin "eine mögliche Bedeutung nicht abzusprechen ist"; sie reagieren spezifisch auf Adrenochrom (WITT 1954), das HoFFER, ÜSMOND u. SMYTHIES (1954) beim Menschen halluzinogen wirksam fanden, woraus sie die Hypothese entwickelten, daß der fehlgeleitete fermentative Abbau des Adrenalins im Körper zu einer Adrenochromanreicherung führt und damit die Delirien erklärt werden könnten; Spinnen reagieren spezifisch auf d-Lysergsäure-diäthylamid (WITT 1951), und von BLICKENSTORFER (1952) wurde hauptsächlich die Hypothese verfochten, daß diese Substanz möglicherweise im kranken Körper als Spurenstoff auftritt.
Die Wirkung Von Substanzen Auf Den Netzbau Der Spinne Als Biologischer Test
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Author : Peter Nik Witt
language : de
Publisher:
Release Date : 1968
Die Wirkung Von Substanzen Auf Den Netzbau Der Spinne Als Biologischer Test written by Peter Nik Witt and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with categories.
Applied Myrmecology
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Author : Robert K Vander Meer
language : en
Publisher: CRC Press
Release Date : 2019-04-23
Applied Myrmecology written by Robert K Vander Meer and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-04-23 with Science categories.
Ants have always fascinated the nature observer. Reports from ancient Egypt and Mesopotamia indicate that ants interested humans long ago. Myrmecology as a science had its beginning in the last century with great naturalists like Andre, Darwin, Emery, Escherich, Fabre, Fields, Forel, Janet, Karawaiew, McCook, Mayr, Smith, Wasmann and Wheeler. They studied ants as an interesting biological phenomenon, with little thought of the possible beneficial or detrimental effects ants could have on human activities (see Wheeler 1910 as an example). When Europeans began colonizing the New World, serious ant problems occurred. The first reports of pest ants came from Spanish and Portuguese officials of the fifteenth and sixteenth centuries in Trinidad, The West Indies, Central America and South America. Leaf-cutting ants were blamed for making agricultural development almost impossible in many areas. These ants, Atta and Acromyrmex species, are undoubtedly the first ants identified as pests and may be considered to have initiated interest and research in applied myrmecology (Mariconi 1970).
Current Developments In Psychopharmacology
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Author : W.B. Essman
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Current Developments In Psychopharmacology written by W.B. Essman and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Medical categories.
The areas of experimental and clinical psychopharmacology have continued to grow in terms of the numbers of studies appearing in the literature as well as the activity generated by other disciplines that has influenced the output of behavioral pharmacology research. Psychoactive drugs have been considered for their comparative effects upon selected behaviors or for their effect upon diverse behaviors. Behavioral circum stances certainly influence not only the metabolism and action of psycho tropic drugs behaviorally, but also the disposition of these agents and/ or their metabolites in regions of the central nervous system. There can hardly be a psychopharmacology without a neuropharmacology, and the latter would seem to depend upon a neurochemistry. There would appear to be variables that exert potent influences upon the disposition and action of psychotropic drugs, that also relate quite directly to their effects upon behavior; these include drug interactions, nutritional status, environmental effects such as temperature, photic and tactile stimulation, and stress, and the basal status upon which such drug treatment is superimposed. In this volume of Current Developments in Psychopharmacology, which will be the last to appear in this format, we have sought to focus upon a series of current topical reviews that highlight representative areas of experimental and clinical research activity in psychopharmacology. In the first chapter, Dr. Lagerspetz reviews a frequently neglected aspect of psychopharmacological research-the actions of psychoactive agents upon the nervous system and behavior of non-mammalian species.
Psychopathology
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Author : Charles Frederick Reed
language : en
Publisher: Harvard University Press
Release Date : 1958
Psychopathology written by Charles Frederick Reed and has been published by Harvard University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1958 with Medical categories.
"Five general areas are represented in the selections: (I) the problem of the effects of early experience on psychological development; (2) psychosomatic disorders and neurosis; (3) schizophrenic psychosis; (4) somatic factors in psychopathology; and (5) the social context and its effects on the phenomena of behavior."--
Biology Of Spiders
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Author : Rainer Foelix
language : en
Publisher: Oxford University Press
Release Date : 2010-12-31
Biology Of Spiders written by Rainer Foelix and has been published by Oxford University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-12-31 with Science categories.
One of the only books to treat the whole spider, from its behavior and physiology to its neurobiology and reproductive characteristics, Biology of Spiders is considered a classic in spider literature. First published in German in 1979, the book is now in its third edition, and has established itself as the supreme authority on these fascinating creatures. Containing five hundred new references, this book incorporates the latest research while dispelling many oft-heard myths and misconceptions that surround spiders. Of special interest are chapters on the structure and function of spider webs and silk, as well as those on spider venom. A new subchapter on tarantulas will appeal especially to tarantula keepers and breeders. The highly accessible text is supplemented by exceptional, high-quality photographs, many of them originals, and detailed diagrams. It will be of interest to arachnologists, entomologists, and zoologists, as well as to academics, students of biology, and the general reader curious about spiders.
National Library Of Medicine Current Catalog
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Author : National Library of Medicine (U.S.)
language : en
Publisher:
Release Date : 1969
National Library Of Medicine Current Catalog written by National Library of Medicine (U.S.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969 with Medicine categories.
First multi-year cumulation covers six years: 1965-70.
Psychotropic Agents
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Author :
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Psychotropic Agents written by and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Medical categories.
The description of the pharmacology of psychotomimetics, cannabis, and alcohol in this third volume concludes the discussion on psychotropic agents. As psychomotor stimulants these groups of psychotropic agents are of little or no therapeutic relevance, but since they are used in a nonmedical manner, or are even considered by some groups of the population as social commodities, their behavioral effects and psychopharmacological properties are not the concern of the pharmacol ogist alone. The same is true of psychotomimetics, as well as cannabis and its components. Psychotomimetics have a social history going back many hundreds of years and are among the most potent psychotropic agents known to man. The closing description of psychopharmacology also deals with the psychotropic effects of a number of drugs not primarily considered to be psychotropic. Their psychotropic effects are either an inherent constituent of their therapeutic profile, as is the case with opiates, hypnotics, and caffeine, or they may occur indirectly as side effects or accompanying effects during therapy. This applies to p-adrenoreceptor antagonists and anticholinergics. The editors are also aware that a description of psychotropic agents would not have been complete without discussing the medical, ethical, and legal aspects of the development, clinical testing, and use of such drugs.
A Spider S Web
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Author : Peter N. Witt
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
A Spider S Web written by Peter N. Witt and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
"Gradually, a faint brightness appeared in the east, and the air, which had been very warm through the night, felt cool and chilly. Though there was no daylight yet, the darkness was diminished, and the stars looked pale. The prison, which had been a mere black mass with little shape or form, put on its usual aspect; and ever and anon a solitary watchman could be seen upon its roof, stopping to look down upon the preparations in the street . . . By and by the feeble light grew stronger, and the houses with their sign-boards and inscriptions stood plainly out, in the dull grey morning . . . And now, the sun's first beams came glancing into the street; and the night's work, which, in its various stages and in the varied fancies of the lookers-on had taken a hundred shapes, wore its own proper form - a scaffold and a gibbet . . . " (The Complete Works of Charles Dickens, Harper & Brothers, New York and London, Barnaby Rudge, Vol. II, Chapter XIX, page 164. ) Dickens describes an activity which takes place in the early morning hours, just before sunrise. As the day begins and people start to go about their business and get ready to watch the hanging, the hangman is ready with the gallows.
Psychedelics Encyclopedia
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Author : Peter Stafford
language : en
Publisher: Ronin Publishing
Release Date : 2013-02-18
Psychedelics Encyclopedia written by Peter Stafford and has been published by Ronin Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-02-18 with Social Science categories.
Traces the history of the use of hallucinogenic drugs and discusses the psychological and physical effects of LSD, marijuana, mescaline, and other drugs.