Biosonar by Annemarie Surlykke, Paul E. Nachtigall, Richard R. Fay,

By Annemarie Surlykke, Paul E. Nachtigall, Richard R. Fay, Arthur N. Popper (eds.)

Two teams of animals, bats and odontocetes (toothed whales), have independently built the power to orient and observe prey by means of biosonar (echolocation). This lively mechanism of orientation permits those animals to function less than low gentle stipulations. Biosonar is a conceptual assessment of what's identified approximately biosonar in bats and odontocetes. Chapters are written via bat and odontocetes specialists, leading to collaborations that not just learn info on either animals, but additionally examine and distinction mechanisms. This ebook offers a distinct perception that might support enhance our figuring out of biosonar in either animal teams.

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Evolution, Gender, and Rape (Bradford Books) by Cheryl Brown Travis

By Cheryl Brown Travis

Are men and women biologically destined to be in perpetual clash? Does evolutionary genetics properly clarify sexual aggression? Such questions were a lot debated in either the media and academia. specifically, the proposal that rape is an evolutionary variation, positioned forth by way of Randy Thornhill and Craig T. Palmer in their e-book A usual historical past of Rape (MIT Press, 2000), vaulted the talk into nationwide prominence. This ebook assesses Thornhill and Palmer's principles, in addition to the severe responses to their paintings. Drawing on thought and knowledge from anthropology, behavioral ecology, evolutionary biology, primatology, psychology, and sociology, the essays clarify the issues and boundaries of a strictly organic version of rape. They argue that commonly stereotyped gender roles are grounded extra in tradition than in differing organic reproductive roles.The booklet is split into 3 components. the 1st half, "Evolutionary types and Gender," addresses vast theoretical and methodological problems with evolutionary conception and sociobiology. half 2, "Critiquing Evolutionary versions of Rape," addresses particular propositions of Thornhill and Palmer, making specific their unexamined assumptions and difficult the medical bases for his or her conclusions. It additionally considers different stories on organic gender modifications. half three, "Integrative Cultural types of Gender and Rape," deals substitute types of rape, which include psychology and cultural structures, in addition to a broader interpretation of evolutionary conception.

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Cell Signaling During Mammalian Early Embryo Development by Henry J. Leese, Daniel R. Brison

By Henry J. Leese, Daniel R. Brison

The ebook considers signaling occasions from the zygote embryo via to the blastocyst with proper information from embryonic stem (ES) cells, together with discussion with the extracellular atmosphere and with the maternal tract in the course of the implantation strategy. software of the data defined to enhance the luck of human and animal assisted belief is taken into account the place acceptable, however the concentration is essentially on basic instead of utilized cell/molecular biology, as this can be the realm that has traditionally been overlooked. whereas the overall gains of metabolism in the course of preimplantation improvement are good verified, in particular when it comes to nutrient specifications, uptake and destiny, remarkably little is understood approximately early embryo signaling occasions, intracellular or intercellular, among person embryos in vitro or with the feminine reproductive tract in vivo. This contrasts with the wealth of knowledge on phone signaling in somatic cells and tissues, as a look at any textbook of biochemistry illustrates. This lack of awareness is such that our knowing of the molecular phone biology of early embryos -- a prerequisite to defining the mechanisms which keep an eye on improvement at this serious degree of the lifestyles cycle -- is heavily incomplete. This quantity is the 1st to handle this factor by means of describing the present nation of data on telephone signaling in the course of mammalian early embryo improvement and highlighting precedence components for research.

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Numerical and Physical Aspects of Aerodynamic Flows IV by J. H. Whitelaw (auth.), Dr. Tuncer Cebeci (eds.)

By J. H. Whitelaw (auth.), Dr. Tuncer Cebeci (eds.)

This quantity features a collection of the papers awarded on the Fourth Symposium on Numerical and actual elements of Aerodynamic Flows, which was once held on the California nation collage, lengthy seashore, from 16-19 January 1989. It comprises the Stewartson Memorial Lecture of Professor J. H. Whitelaw, and is split into 3 elements. the 1st is a suite of papers that describe the prestige of present expertise in - and three-d regular flows, the second one bargains with - and 3-dimensional unsteady flows, and the papers within the 3rd tackle balance and transition. all of the 3 components starts off with an outline of present examine, as defined within the following chapters. the person papers are edited models of the chosen papers initially submitted to the symposium. 4 years have handed because the 3rd Symposium, and likely traits be­ come transparent if one compares the papers contained during this quantity with these of past volumes. There are extra 3- than two-dimensional difficulties consid­ ered partly 1 and the latter deal with more challenging difficulties than long ago, for instance, the extension to better angles of assault, to transonic movement, to major­ area ice accretion, and to thick hydrofoils. the big variety of papers within the first half displays the emphasis of present examine and improvement and the wishes of industry.

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Structure and Approximation in Physical Theories by A. Hartkämper, H.-J. Schmidt (auth.), A. Hartkämper, H.-J.

By A. Hartkämper, H.-J. Schmidt (auth.), A. Hartkämper, H.-J. Schmidt (eds.)

The current quantity comprises 14 contributions awarded at a colloquium on "Structure and Approximation in actual Theories" held at Osnabruck in June 1980. The articles are provided within the revised shape written after the colloquium and accordingly additionally take account of the result of the dialogue on the colloquium. it's a extraordinary characteristic that the matter of approximation in actual theories has only in the near past came across a few cognizance within the philosophy of technological know-how, even if the operating physicist is con­ stantly faced with these questions. No fascinating thought of actual technology precisely matches its experimental information; nearly each relation among varied theories is an approximate one. There­ fore an sufficient reconstruction of actual theories needs to keep in mind and conceptualize the instant of approximation. the vast majority of the articles during this publication is based round this topic. There are at the least difficult, 'structuralistic' methods to the formalization of actual theories within which the point of approximation has been integrated: the technique because of P. Suppes, J. Sneed, W. Stegmuller ("S-approach") and the strategy of G. Lud­ wig and his co-workers ("L-approach"). The articles during this publication correspondingly fall into 3 sessions: presentation, elaboration and critique of the L-approach [Hartkamper/Schmidt, Ludwig, Neumann, Werner, Schmidt, Mayr, Kamiah, Majer, Grafe] or of the S-approach [Moulines, Balzer, Cooke], and articles touching on either methods or considering comparable concerns [Scheibe, Pfarr, Castrigiano]. after all, this can be just a tough type and every article has to be appraised in its personal right.

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The Catecholaminergic Innervation of the Rat Amygdala by Esther Asan

By Esther Asan

Experimental facts exhibits that catecholamines may be able to modulate details processing within the amygdaloid advanced. The dense catecholaminergic innervation of the amygdala could hence exert major impression upon its well-documented services in emotion, awareness, studying and reminiscence. Dysfunctions of the platforms were instructed to be eager about the etiology of neuropsychiatric issues together with senile dementia, Parkinson's illness and schizophrenia. To extra perception into neural mechanisms of the innervation, the current examine presents a close documentation of ultrastructural and neurochemical features of dopanminergic, noradrinergic and adrenergic afferent fibers and in their aim constructions in critical, basal and intercalated amygdaloid nuclei. A excessive measure of heterogeneitiy is saw among the nuclei in regards to the diverse catecholaminergic innervation styles and the peptide content material of person catecholaminergic fibers, in addition to in regards to the neurotransmitter/-modulator and receptor expression of attainable amygdaloid objective neurons. the implications are mentioned in regards to formerly documented houses of the nuclei.

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Physical Properties of Nanosystems by V. G. Kravets, R. R. Nair, P. Blake, L. A. Ponomarenko, I.

By V. G. Kravets, R. R. Nair, P. Blake, L. A. Ponomarenko, I. Riaz, R. Jalil, S. Anisimova (auth.), Janez Bonca, Sergei Kruchinin (eds.)

Recent advances in nanoscience have verified that essentially new actual phenomena are discovered while platforms are lowered to sizes equivalent to the basic microscopic size scales of the cloth investigated. there was nice curiosity during this examine due, specifically, to its function within the improvement of spintronics, molecular electronics and quantum info processing. The contributions to this quantity describe new advances in lots of of those primary and interesting parts of nanophysics, together with carbon nanotubes, graphene, magnetic nanostructures, shipping via coupled quantum dots, spintronics, molecular electronics, and quantum info processing.

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