The growth of biological thought by Ernst Mayr

By Ernst Mayr

Not anyone during this century can communicate with higher authority at the development of principles in biology than Ernst Mayr. And no publication has ever demonstrated the lifestyles sciences so firmly within the mainstream of Western highbrow heritage as The progress of organic Thought. Ten years in training, it is a paintings of epic proportions, tracing the advance of the key difficulties of biology from the earliest makes an attempt to discover order within the range of lifestyles, to fashionable learn into the mechanisms of gene transmission.

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Das Sehen in der Dämmerung: Physiologie und Klinik by Franz A. Hamburger

By Franz A. Hamburger

Kenntnisse auf dem Gebiete der Physiolo ie gehoren zum Bildungsgut des Arztes, ja jedes Naturforschers. Das hier be handelte Thema ist sogar oft Gegenstand von Fragen, die der Laie an den Arzt richtet und die der Arzt manchmal nicht be friedigend beantworten kann. Der Verfasser hat sich deshalb be muht, bei aller Knappheit der Darstellung auch dem fachlich Uneingeweihten verstandlich zu bleiben. Dies um so mehr, als, las Thema einen Ausschnitt aus der Sinnesphysiologie betrifft, der die Augenheilkunde, die innere Medizin und die Neurologie, ja seihst die Physik und die Philosophie miteinander vereinigt. Es ist der Ehrgeiz des Verfassers, auch bei dpn Anhangern die;;er Disziplinen auf Interesse zu stossen. Die Studie stellt die Zusammenfassung von Arbeiten dar, die der Verfasser im Dienste der Deutschen Kriegsmarine in den Jahren 1942 bis 1945 ausgefuhrt hat. Sie gingen zu einem Teile auf Veranlassung und Anregung des Herrn Doz. Dr. E. He i n si u s zuruck, der mit Herrn Hofrat Prof. Dr. A. v. T s ehe r m a okay - S e y sen e g g eine eigene sinnesmedizinische Abteilung einge richtet hatte. Die Versuche dienten praktischen Gesichtspunkten. fuhrten aher zu Ergebnissen, die die Theorie des Lichtsinns nicht unwesentlich beeinflussen. In den drei Jahren entstanden etwa zehn Berichte, die bisher nicht veroffentlicht wenlen konnten

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Life Strategies, Human Evolution, Environmental Design: by Valerius Geist (auth.)

By Valerius Geist (auth.)

Consider that you simply have been requested tips to be sure human survival. the place could you start? Conservation of assets jumps to brain. we have to preserve assets so that financial actions may well proceed. unfortunately, it is a fake commence. assets are continually outlined through a given economic climate, and simply it determines what's and what's no longer a source. for this reason, retaining assets implies simply the perpetua­ tion of the ideal economic climate. Conservation of assets as we all know them has not anything to do with the survival of mankind, however it has a great deal to do with the survival of the commercial process and society we are living in this day. we need to begin, for that reason, at a extra easy point. This point, a few might argue, is addressed via making sure for humans "clean genes. " back, this can be a unsuitable starting. it's completely mistaken-for purposes of technology. it's a fake commence simply because malfunctioning organs and morphological buildings usually are not merely because of deleterious hereditary components yet fairly as a result of negative environments in the course of early progress and improvement. furthermore, eugenics isn't really appropriate to any yet a small fraction of society. Eugenics is probably not inappropriate to our destiny, yet is untimely and will be of little drawback till we know the way human genes and surroundings interact.

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Dynamical Systems. An Introduction with Applications in by P. N. V. Tu, Pierre N. Tu

By P. N. V. Tu, Pierre N. Tu

This publication - probably the one of its style - offers a finished account of Dynamical structures in a undeniable non-technical language that is as rigorous because it should be made at this introductory point. ranging from the 1st steps of differential equations, at the assumption that readers merely have a modest mathematical history, it fast takes them to nonlinear dynamical structures, linearization idea, restrict cycles, Gradient, Lagrangean and Hamiltonian dynamical platforms. except a brand new bankruptcy on Floquet concept, Centre Manifold theorems and Liapunov-Schmidt aid, this moment version additionally comprises new fabrics, extra examples, illustrations and functions: virtually each bankruptcy has been re-written and enlarged to maintain with quick advances during this box.

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BMP Receptor by Reddi A.

By Reddi A.

Bone morphogenetic proteins (BMPs) are osteotro-phic and osteoinductive cytokines. BMPs are pleio-tropic cytokines with activities not just on bone and cartilage but in addition on mind, tooth, pores and skin, middle, lung, kidney, and a number of alternative tissues. They act on chemotaxis. mitosis, differentiation, cellphone survival and phone demise. The organic activities of BMPs are med-iated via binding to precise BMP receptors kinds I and II. there's a collaboration among the receptors and downstream substrates resembling receptor-regulated R-Smads 1, five, and eight. The phosphorylated R-Smads companion with Co-Smad. Smad4. and input the nucleus to start up the transcription of BMP-responsive genes. Smad6 inhibits the task of kind I BMP receptor protein kinase. therefore, the BMP receptors offer a finely regulated homeostatic approach with exams and balances.

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