Norma tecnica colombiana NTC 1868

Norma tecnica colombiana NTC 1868 PDF Author: Instituto Colombiano de Normas Técnicas y Certificación (ICONTEC)
Publisher:
ISBN:
Category :
Languages : es
Pages : 17

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Norma tecnica colombiana NTC 1868

Norma tecnica colombiana NTC 1868 PDF Author: Instituto Colombiano de Normas Técnicas y Certificación (ICONTEC)
Publisher:
ISBN:
Category :
Languages : es
Pages : 17

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Norma tecnica colombiana NTC 1458

Norma tecnica colombiana NTC 1458 PDF Author: ICONTEC.
Publisher:
ISBN:
Category :
Languages : es
Pages :

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Passiflora

Passiflora PDF Author: Torsten Ulmer
Publisher: Timber Press (OR)
ISBN: 9780881926484
Category : Gardening
Languages : en
Pages : 430

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Book Description
As lushly illustrated as it is informative, this book reveals the immense variation found among members of this extraordinary genus.

Opera Acts

Opera Acts PDF Author: Karen Henson
Publisher: Cambridge University Press
ISBN: 1107004268
Category : Music
Languages : en
Pages : 281

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Book Description
Opera Acts explores a wealth of new historical material about singers in the late nineteenth century and challenges the idea that this was a period of decline for the opera singer. In detailed case studies of four figures - the late Verdi baritone Victor Maurel; Bizet's first Carmen, Célestine Galli-Marié; Massenet's muse of the 1880s and 1890s, Sibyl Sanderson; and the early Wagner star Jean de Reszke - Karen Henson argues that singers in the late nineteenth century continued to be important, but in ways that were not conventionally 'vocal'. Instead they enjoyed a freedom and creativity based on their ability to express text, act and communicate physically, and exploit the era's media. By these and other means, singers played a crucial role in the creation of opera up to the end of the nineteenth century.

Applications of Activated Sludge Models

Applications of Activated Sludge Models PDF Author: Damir Brdjanovic
Publisher: IWA Publishing
ISBN: 1780404638
Category : Science
Languages : en
Pages : 472

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Book Description
In 1982 the International Association on Water Pollution Research and Control (IAWPRC), as it was then called, established a Task Group on Mathematical Modelling for Design and Operation of Activated Sludge Processes. The aim of the Task Group was to create a common platform that could be used for the future development of models for COD and N removal with a minimum of complexity. As the collaborative result of the work of several modelling groups, the Activated Sludge Model No. 1 (ASM1) was published in 1987, exactly 25 years ago. The ASM1 can be considered as the reference model, since this model triggered the general acceptance of wastewater treatment modelling, first in the research community and later on also in practice. ASM1 has become a reference for many scientific and practical projects, and has been implemented (in some cases with modifications) in most of the commercial software available for modelling and simulation of plants for N removal. The models have grown more complex over the years, from ASM1, including N removal processes, to ASM2 (and its variations) including P removal processes, and ASM3 that corrects the deficiencies of ASM1 and is based on a metabolic approach to modelling. So far, ASM1 is the most widely applied. Applications of Activated Sludge Models has been prepared in celebration of 25 years of ASM1 and in tribute to the activated sludge modelling pioneer, the late Professor G.v.R. Marrais. It consists of a dozen of practical applications for ASM models to model development, plant optimization, extension, upgrade, retrofit and troubleshooting, carried out by the members of the Delft modelling group over the last two decades.

Keys to Soil Taxonomy

Keys to Soil Taxonomy PDF Author: Agriculture Department
Publisher: Government Printing Office
ISBN: 9780160923210
Category : Soils
Languages : en
Pages : 372

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Book Description
This publication, Keys to Soil Taxonomy, Twelfth Edition, 2014, coincides with the 20th World Congress of Soil Science, to be held on Jeju Island, Korea in June 2014. The Keys to Soil Taxonomy serves two purposes. It provides the taxonomic keys necessary for the classification of soils in a form that can be used easily in the field. It also acquaints users of soil taxonomy with recent changes in the classification system. The twelfth edition of the Keys to Soil Taxonomy incorporates all changes approved since the publication in 1999 of the second edition of Soil Taxonomy: A Basic System of Soil Classification for Making and Interpreting Soil Surveys.

Author Catalog

Author Catalog PDF Author: Library of Congress
Publisher:
ISBN:
Category : American literature
Languages : en
Pages :

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The Mirage of a Space between Nature and Nurture

The Mirage of a Space between Nature and Nurture PDF Author: Evelyn Fox Keller
Publisher: Duke University Press
ISBN: 082239281X
Category : Science
Languages : en
Pages : 118

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Book Description
In this powerful critique, the esteemed historian and philosopher of science Evelyn Fox Keller addresses the nature-nurture debates, including the persistent disputes regarding the roles played by genes and the environment in determining individual traits and behavior. Keller is interested in both how an oppositional “versus” came to be inserted between nature and nurture, and how the distinction on which that opposition depends, the idea that nature and nurture are separable, came to be taken for granted. How, she asks, did the illusion of a space between nature and nurture become entrenched in our thinking, and why is it so tenacious? Keller reveals that the assumption that the influences of nature and nurture can be separated is neither timeless nor universal, but rather a notion that emerged in Anglo-American culture in the late nineteenth century. She shows that the seemingly clear-cut nature-nurture debate is riddled with incoherence. It encompasses many disparate questions knitted together into an indissoluble tangle, and it is marked by a chronic ambiguity in language. There is little consensus about the meanings of terms such as nature, nurture, gene, and environment. Keller suggests that contemporary genetics can provide a more appropriate, precise, and useful vocabulary, one that might help put an end to the confusion surrounding the nature-nurture controversy.

Sustainable Agriculture and the Environment in the Humid Tropics

Sustainable Agriculture and the Environment in the Humid Tropics PDF Author: National Research Council
Publisher: National Academies Press
ISBN: 0309047498
Category : Technology & Engineering
Languages : en
Pages : 721

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Book Description
Rainforests are rapidly being cleared in the humid tropics to keep pace with food demands, economic needs, and population growth. Without proper management, these forests and other natural resources will be seriously depleted within the next 50 years. Sustainable Agriculture and the Environment in the Humid Tropics provides critically needed direction for developing strategies that both mitigate land degradation, deforestation, and biological resource losses and help the economic status of tropical countries through promotion of sustainable agricultural practices. The book includes: A practical discussion of 12 major land use options for boosting food production and enhancing local economies while protecting the natural resource base. Recommendations for developing technologies needed for sustainable agriculture. A strategy for changing policies that discourage conserving and managing natural resources and biodiversity. Detailed reports on agriculture and deforestation in seven tropical countries.

Biological Wastewater Treatment

Biological Wastewater Treatment PDF Author: Mogens Henze
Publisher: IWA Publishing (International Water Assoc)
ISBN:
Category : Science
Languages : en
Pages : 170

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Book Description
For information on the online course in Biological Wastewater Treatment from UNESCO-IHE, visit: http://www.iwapublishing.co.uk/books/biological-wastewater-treatment-online-course-principles-modeling-and-design Over the past twenty years, the knowledge and understanding of wastewater treatment have advanced extensively and moved away from empirically-based approaches to a first principles approach embracing chemistry, microbiology, physical and bioprocess engineering, and mathematics. Many of these advances have matured to the degree that they have been codified into mathematical models for simulation with computers. For a new generation of young scientists and engineers entering the wastewater treatment profession, the quantity, complexity and diversity of these new developments can be overwhelming, particularly in developing countries where access is not readily available to advanced level tertiary education courses in wastewater treatment. Biological Wastewater Treatment addresses this deficiency. It assembles and integrates the postgraduate course material of a dozen or so professors from research groups around the world that have made significant contributions to the advances in wastewater treatment. The book forms part of an internet-based curriculum in biological wastewater treatment which also includes: Summarized lecture handouts of the topics covered in book Filmed lectures by the author professors Tutorial exercises for students self-learning Upon completion of this curriculum the modern approach of modelling and simulation to wastewater treatment plant design and operation, be it activated sludge, biological nitrogen and phosphorus removal, secondary settling tanks or biofilm systems, can be embraced with deeper insight, advanced knowledge and greater confidence.