Proceedings of The Academy of Natural Sciences (Vol. 154, 2005) PDF Download

Author:
Publisher: Academy of Natural Sciences
ISBN: 9781437955521
Category :
Languages : en
Pages : 168

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Author: Academy of Natural Sciences of Philadelphia
Publisher:
ISBN:
Category : Electronic journals
Languages : en
Pages : 308

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"Publications of the Academy of Natural Sciences of Philadelphia": v. 53, 1901, p. 788-794.

Author: Matt Walker
Publisher: Macmillan
ISBN: 9780312371166
Category : Nature
Languages : en
Pages : 236

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A collection of animal trivia focusing on the unusual or bizarre includes such examples as the sexual prowess of virgin male butterflies, the role of eyeballs in enabling frogs to swallow, and the fighting styles of deer as evidenced by their horn shape.

Author: Megan Raby
Publisher: UNC Press Books
ISBN: 1469635615
Category : Nature
Languages : en
Pages : 337

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Biodiversity has been a key concept in international conservation since the 1980s, yet historians have paid little attention to its origins. Uncovering its roots in tropical fieldwork and the southward expansion of U.S. empire at the turn of the twentieth century, Megan Raby details how ecologists took advantage of growing U.S. landholdings in the circum-Caribbean by establishing permanent field stations for long-term, basic tropical research. From these outposts of U.S. science, a growing community of American "tropical biologists" developed both the key scientific concepts and the values embedded in the modern discourse of biodiversity. Considering U.S. biological fieldwork from the era of the Spanish-American War through the anticolonial movements of the 1960s and 1970s, this study combines the history of science, environmental history, and the history of U.S.–Caribbean and Latin American relations. In doing so, Raby sheds new light on the origins of contemporary scientific and environmentalist thought and brings to the forefront a surprisingly neglected history of twentieth-century U.S. science and empire.

Author: Jordi López-Pujol
Publisher: BoD – Books on Demand
ISBN: 9533077514
Category : Science
Languages : en
Pages : 406

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The term biodiversity defines not only all the variety of life in the Earth but also their complex interactions. Under the current scenario of biodiversity loss, and in order to preserve it, it is essential to achieve a deep understanding on all the aspects related to the biological interactions, including their functioning and significance. This volume contains several contributions (nineteen in total) that illustrate the state of the art of the academic research in the field of biological interactions in its widest sense; that is, not only the interactions between living organisms are considered, but also those between living organisms and abiotic elements of the environment as well as those between living organisms and the humans.

Author: Ignác Capek
Publisher: John Wiley & Sons
ISBN: 1119120934
Category : Science
Languages : en
Pages : 672

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There is a growing interest in the use of nanoparticles modifiedwith DNAs, viruses, peptides and proteins for the rational designof nanostructured functional materials and their use in biosensorapplications. The challenge is to control the organization ofbiomolecules on nanoparticles while retaining their biologicalactivity as potential chemical and gene therapeutics. Thesenoble metal nanoparticles/biomolecules conjugates have specificproperties and therefore they are attractive materials fornanotechnology in biochemistry and medicine. In this book, the author review work performed dealing with theDNA structure and functionalities, interactions between DNA, noblemetal nanoparticles, surface active agents, solvents and otheradditives. Particular attention is given to how the DNA’schain length and the DNA conformation affect the interaction andstructure of the nanoconjugates and nanostructures that are formed.Also discussed are the recent advances in the preparation,characterization, and applications of noble metal nanoparticlesthat are conjugated with DNA aptamers and oligomers. The advantagesand disadvantages of functionalized nanoparticles through variousdetection modes are highlighted, including colorimetry,fluorescence, electrochemistry, SPR, and, mass spectrometry for thedetection of small molecules and biomolecules. The functionalizednoble metal nanoparticles are selective and sensitive for theanalytes, showing their great potential in biosensing. Furthermore,this book reviews recent progress in the area of DNA-noble metalnanoparticles based artificial nanostructures, that is, thepreparation, collective properties, and applications of variousDNA-based nanostructures are also described.

Author:
Publisher: Academy of Natural Sciences
ISBN: 9781437955538
Category :
Languages : en
Pages : 410

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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Author: Julian P. Hume
Publisher: Bloomsbury Publishing
ISBN: 1472937457
Category : Nature
Languages : en
Pages : 797

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A comprehensive review of the hundreds of bird species that have become extinct over the last 1,000 years of habitat degradation, over-hunting and rat introduction. Extinct Birds has become the standard text on this subject, covering both familiar icons of extinction as well as more obscure birds, some known from just one specimen or from travellers' tales. This second edition is expanded to include dozens of new species, as more are constantly added to the list, either through extinction or through new subfossil discoveries. The book is the result of decades of research into literature and museum drawers, as well as caves and subfossil deposits, which often reveal birds long-gone that disappeared without ever being recorded by scientists while they lived. From Great Auks, Carolina Parakeets and Dodos to the amazing yet almost completely vanished bird radiations of Hawaii and New Zealand via rafts of extinction in the Pacific and elsewhere, this book is both a sumptuous reference and astounding testament to humanity's devastating impact on wildlife.

Author: Klement Tockner
Publisher: Elsevier
ISBN: 0081026137
Category : Science
Languages : en
Pages : 946

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Rivers of Europe, Second Edition, presents the latest update on the only primary source of complete and comparative baseline data on the biological and hydrological characteristics of more than 180 of the highest profile rivers in Europe. With even more full-color photographs and maps, the book includes conservation information on current patterns of river use and the extent to which human society has exploited and impacted them. Each chapter includes up to 10 featured rivers, with detailed information on their physiography, hydrology, ecology/biodiversity and human impacts. Rivers selected for specific coverage include the largest, the most natural, and those most affected by humans. This book provides the most comprehensive information ecologists and conservation managers need to better assess their management and meet the EU legislative good governance targets. Includes comparison photos of rivers, along with information on the history and management of each river Presents summary information on hydrological, ecological and freshwater biodiversity patterns and trends of each river Highlights environmental issues of great importance to citizens and governments, including fragmentation by dams, pollution, introduction of nonnative species and reductions in biodiversity