Extraction Et Caracterisation De La Matiere Organique Soluble Des Horizons Profonds Dun Sol Arable

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Extraction et caractérisation de la matière organique soluble des horizons profonds d'un sol arable

Author : Aurélien Lavaud
Publisher :
ISBN 13 :
Total Pages : 228 pages
Book Rating : 4.:/5 (758 download)

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Book Synopsis Extraction et caractérisation de la matière organique soluble des horizons profonds d'un sol arable by : Aurélien Lavaud

Download or read book Extraction et caractérisation de la matière organique soluble des horizons profonds d'un sol arable written by Aurélien Lavaud and published by . This book was released on 2010 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'augmentation de la concentration en CO2 atmosphérique due à la combustion des ressources fossiles et à la déforestation est aujourd'hui l'un des grands problèmes environnementaux. Pour stocker du carbone et ainsi diminuer la concentration du CO2 émis par l'activité humaine dans l'atmosphère, il faudrait pouvoir agir sur les puits de carbone situés dans la biosphère continentale. Le plus grand réservoir superficiel de carbone de la biosphère continentale est le sol, qui stocke 1500 Mt de carbone. Le potentiel des sols français à stocker du carbone est actuellement évalué pour l'horizon labouré, i.e. les premiers 30 cm. Toutefois, des travaux récents ont montré qu'une proportion importante du carbone des sols est stockée dans les horizons B et C. Le rôle précis du carbone organique soluble ou COD (Carbone Organique Dissous) dans la stabilisation et/ ou déstabilisation du carbone des horizons profonds, est indispensable pour pouvoir adapter les modes de gestion des terres et les systèmes de culture afin d'augmenter le stock de carbone dans les sols. Malgré une littérature abondante, les études concernant les COD sont principalement limitées aux sols des écosystèmes forestiers et surtout à l'échelle du laboratoire. Les résultats obtenus n'ont jamais été confirmés sur le terrain. L'objectif général de cette thèse est de mieux définir la proportion des matières organiques hydrosolubles des différents horizons d'un sol arable et préciser leurs principales caractéristiques structurales. Ce travail prend en compte l'importance du mode de pratique cultural et l'impact des périodes de sécheresse prolongées en particulier au niveau des horizons profonds. Différentes techniques analytiques (spectrofluorimétrie, chromatographie d'exclusion de taille, pyrolyse CG/MS, RMN 13C) ont été utilisées sur les eaux collectées au niveau des plaques lysimétriques et des bougies poreuses mais également sur les extraits HPO, TPH et HPI, dans le but de caractériser la MO des horizons profonds en s'appuyant sur des travaux préexistants sur les eaux de surface. Les travaux ont montré que la MO des horizons profonds était caractérisée par une faible aromaticité, une plus faible masse moléculaire et par la présence de composés de type lignines et terpénoïdes.

Livestock Policy Analysis

Author : International Livestock Research Institute
Publisher : ILRI (aka ILCA and ILRAD)
ISBN 13 : 9789291460038
Total Pages : 268 pages
Book Rating : 4.4/5 (6 download)

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Book Synopsis Livestock Policy Analysis by : International Livestock Research Institute

Download or read book Livestock Policy Analysis written by International Livestock Research Institute and published by ILRI (aka ILCA and ILRAD). This book was released on 1995-01-01 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Policy concepts; Identification of policy issues; Production systems, supply and demand; Market, price and trade policies; Marketing and distribution systems; Budget and manpower planning; Land tenure police for the livestock sector; Policy analysis report writing and communication; Livestock production and marketing in alphabeta - a case study.

The Forests of the Philippines

Author : Philippines. Bureau of Forestry
Publisher :
ISBN 13 :
Total Pages : 574 pages
Book Rating : 4.0/5 ( download)

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Book Synopsis The Forests of the Philippines by : Philippines. Bureau of Forestry

Download or read book The Forests of the Philippines written by Philippines. Bureau of Forestry and published by . This book was released on 1908 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt:

New Guinea Vegetation

Author : K. Paijmans
Publisher : Elsevier Science & Technology
ISBN 13 :
Total Pages : 240 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis New Guinea Vegetation by : K. Paijmans

Download or read book New Guinea Vegetation written by K. Paijmans and published by Elsevier Science & Technology. This book was released on 1976 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

New Queries in Aesthetics and Metaphysics

Author : Anna-Teresa Tymieniecka
Publisher : Springer Science & Business Media
ISBN 13 : 9780792311959
Total Pages : 498 pages
Book Rating : 4.3/5 (119 download)

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Book Synopsis New Queries in Aesthetics and Metaphysics by : Anna-Teresa Tymieniecka

Download or read book New Queries in Aesthetics and Metaphysics written by Anna-Teresa Tymieniecka and published by Springer Science & Business Media. This book was released on 1991-10-31 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection is the final volume of a four book survey of the state of phenomenology fifty years after the death of Edmund Husserl. Its publication represents a landmark in the comprehensive treatment of contemporary phenomenology in all its vastness and richness. The diversity of the issues raised here is dazzling, but the main themes of Husserl's thought are all either explicitly treated, or else they underlie the ingenious approaches found here. Time, historicity, intentionality, eidos, meaning, possibility/reality, and teleology are the main concerns of this collection devoted to studies in aesthetics, metaphysics and literary interpretation, written by such authors as, among others, R. Cobb-Stevens, C. Moreno Marquez, J. Swiecimski, Sitansu Ray and M. Kronegger. These original studies of phenomenological aesthetics and literary theory by scholars from all parts of the world were gathered by the World Institute for Advanced Phenomenological Research and Learn ing during the year 1988/89 during its assessment of the phenomeno logical movement, fifty years after Husserl's death. IX A -T. Tymieniecka (ed.), Analecta Husserliana, Vol. XXXVII, ix.

Flora Of Eastern Saudi Arabia

Author : James P. Mandaville
Publisher : Routledge
ISBN 13 : 1136151621
Total Pages : 561 pages
Book Rating : 4.1/5 (361 download)

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Book Synopsis Flora Of Eastern Saudi Arabia by : James P. Mandaville

Download or read book Flora Of Eastern Saudi Arabia written by James P. Mandaville and published by Routledge. This book was released on 2013-08-06 with total page 561 pages. Available in PDF, EPUB and Kindle. Book excerpt: First published in 1990. A practical manual for identifying the plants of Saudi Arabia’s Eastern Province. This guide is useful for development and conservation of natural resources, includes botanical terminology and so will appeal to those with this knowledge, but also due to the colour plates, to the non-specialist who might be interested in desert wildflowers of the area.

Trichier

Author : Alessandra Ceretto
Publisher : Lulu.com
ISBN 13 : 136509796X
Total Pages : 192 pages
Book Rating : 4.3/5 (65 download)

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Book Synopsis Trichier by : Alessandra Ceretto

Download or read book Trichier written by Alessandra Ceretto and published by Lulu.com. This book was released on with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Turning Points of the New Phenomenological Era

Author : Anna-Teresa Tymieniecka
Publisher : Springer Science & Business Media
ISBN 13 : 9401134642
Total Pages : 570 pages
Book Rating : 4.4/5 (11 download)

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Book Synopsis The Turning Points of the New Phenomenological Era by : Anna-Teresa Tymieniecka

Download or read book The Turning Points of the New Phenomenological Era written by Anna-Teresa Tymieniecka and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt: orbit and far beyond it. Indeed, the immense, painstaking, indefatigable and ever-improving effort of Husserl to find ever-deeper and more reliable foundations for the philosophical enterprise (as well as his constant critical re-thinking and perfecting of the approach and so called "method" in order to perform this task and thus cover in this source-excavation an ever more far-reaching groundwork) stands out and maintains itself as an inepuisable reservoir for philosophical reflec tion in which all the above-mentioned work has either its core or its source. In fact, in his undertaking to re-think the entire philosophical enterprise as such and to recreate philosophy upon what he sought to be at least a satisfactorily legitimated basis, Husserl, through his already systematised and "authorized" work, and his courses, and later on in his spontaneous reflection (which did not find its way into a definitive corpus but was nevertheless sufficiently coherent with his previously established body of thought to be considered a continuation of it), uncovers perspectives upon the universe of man and projects their new philosophical thematisation that brings together all the attempts by philosophers (e. g. , Merleau-Ponty, who drew upon this material and found there his own inspiration) who succeeded him with foundational intentions; it also gives a core of philosophical ideas and insights for the youngergenerationofphilosophers today.

The Ecology of Areas with Serpentinized Rocks

Author : B.A. Roberts
Publisher : Springer Science & Business Media
ISBN 13 : 9401137226
Total Pages : 425 pages
Book Rating : 4.4/5 (11 download)

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Book Synopsis The Ecology of Areas with Serpentinized Rocks by : B.A. Roberts

Download or read book The Ecology of Areas with Serpentinized Rocks written by B.A. Roberts and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 425 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Agricultural English

Author : Georgeta Raţă
Publisher : Cambridge Scholars Publishing
ISBN 13 : 1443839612
Total Pages : 385 pages
Book Rating : 4.4/5 (438 download)

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Book Synopsis Agricultural English by : Georgeta Raţă

Download or read book Agricultural English written by Georgeta Raţă and published by Cambridge Scholars Publishing. This book was released on 2012-04-25 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: Agricultural English is a collection of essays on the English of Agriculture. The approach is a linguistic one: the different aspects of the English used in the field of agriculture (agricultural practices, agricultural systems) and in some fields related to agriculture (agricultural zoology, agri-tourism, biology, botany, ecology, entomology, gastronomy, land measurement, plant pathology, zoology) are analysed from a morphological (combination, derivation), syntactical (nominal phrases, verbal phrases), lexical and lexicographical, semantic (homonymy, semantic fields, synonymy, terminology), pragmatic (academic discourse, idiom, metaphor), etymological (etymon, Latin heritage), and contrastive (English–Croatian, English–French, English–German, English–Romanian, Romanian–English) points of view. The book will appeal to agriculturists, animal breeders, professors, researchers, students, and translators from Croatian-, English-, French-, German-, and Romanian-speaking countries, active in their own countries or abroad. The types of academic readership it would appeal to include academic teaching staff, researchers and students in the fields of agriculture and related fields – agricultural zoology, agri-tourism, biology, botany, ecology, entomology, gastronomy, land measurement, plant pathology, and zoology.

Husserl’s Legacy in Phenomenological Philosophies

Author : Anna-Teresa Tymieniecka
Publisher : Springer Science & Business Media
ISBN 13 : 9401133689
Total Pages : 417 pages
Book Rating : 4.4/5 (11 download)

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Book Synopsis Husserl’s Legacy in Phenomenological Philosophies by : Anna-Teresa Tymieniecka

Download or read book Husserl’s Legacy in Phenomenological Philosophies written by Anna-Teresa Tymieniecka and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Plant-Animal Interactions

Author : Kleber Del-Claro
Publisher : Springer Nature
ISBN 13 : 3030668770
Total Pages : 357 pages
Book Rating : 4.0/5 (36 download)

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Book Synopsis Plant-Animal Interactions by : Kleber Del-Claro

Download or read book Plant-Animal Interactions written by Kleber Del-Claro and published by Springer Nature. This book was released on 2021-06-04 with total page 357 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook provides the first overview of plant-animal interactions for twenty years focused on the needs of students and professors. It discusses a range of topics from the basic structures of plant-animal interactions to their evolutionary implications in producing and maintaining biodiversity. It also highlights innovative aspects of plant-animal interactions that can represent highly productive research avenues, making it a valuable resource for anyone interested in a future career in ecology. Written by leading experts, and employing a variety of didactic tools, the book is useful for students and teachers involved in advanced undergraduate and graduate courses addressing areas such as herbivory, trophic relationships, plant defense, pollination and biodiversity.

A Hand-book to the Flora of Ceylon

Author : Henry Trimen
Publisher :
ISBN 13 :
Total Pages : 506 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis A Hand-book to the Flora of Ceylon by : Henry Trimen

Download or read book A Hand-book to the Flora of Ceylon written by Henry Trimen and published by . This book was released on 1900 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt: Indonesien, Florenwerke

The Billy Meier Contacts Reports: Book 1

Author : Billy Meier
Publisher :
ISBN 13 : 9781481132886
Total Pages : 274 pages
Book Rating : 4.1/5 (328 download)

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Book Synopsis The Billy Meier Contacts Reports: Book 1 by : Billy Meier

Download or read book The Billy Meier Contacts Reports: Book 1 written by Billy Meier and published by . This book was released on 2012-11-30 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Billy Meier Contact Reports: Book 1This is Book 1 of the long desired series that will eventually contain all of the translated Contact Reports, including corrected versions of the translations done by Wendelle Stevens. The contact numbers will be listed on the cover of each volume, as is the case in the first edition above.This is the perfect way to have your own copies of this invaluable information.

Threatened Australian Plants

Author : J. H. Leigh
Publisher :
ISBN 13 :
Total Pages : 132 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Threatened Australian Plants by : J. H. Leigh

Download or read book Threatened Australian Plants written by J. H. Leigh and published by . This book was released on 1992 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Serpentine and Its Vegetation

Author : R. R. Brooks
Publisher :
ISBN 13 :
Total Pages : 526 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Serpentine and Its Vegetation by : R. R. Brooks

Download or read book Serpentine and Its Vegetation written by R. R. Brooks and published by . This book was released on 1987 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: An exhaustive worldwide survey of serpentine soils and the characteristic vegetation that they support. It includes a continent-by-continent listing of known serpentine locations.

Meaning and Language: Phenomenological Perspectives

Author : Filip Mattens
Publisher :
ISBN 13 :
Total Pages : 372 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Meaning and Language: Phenomenological Perspectives by : Filip Mattens

Download or read book Meaning and Language: Phenomenological Perspectives written by Filip Mattens and published by . This book was released on 2008-07-08 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the first anthology to provide a wide-ranging picture of how phenomenology relates to language. It contains both in-depth studies on new aspects of language in Husserl’s thought as well as original phenomenological research that explores the respective potentials and limits of linguistic expression and conceptualization. The fourteen texts gathered here may have a single aim, but their content varies depending on the respective author’s intention: either to discuss problems of language within the Husserlian framework, to address philosophical issues of language proceeding from a phenomenological viewpoint, or to provide a reflection on phenomenology’s relation to language. Thus, rather than being organized by topic, the collection has been arranged into three parts, according to the respective authors’ philosophical approaches.