ETUDE COMPARATIVE DES AEROSOLS CARBONES EN MILIEU TROPICAL, URBAIN ET ARCTIQUE PDF Download
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Author: STEPHANE.. RUELLAN
Publisher:
ISBN:
Category :
Languages : fr
Pages : 198
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Book Description
LES DIFFERENTS PROCESSUS DE COMBUSTION GENERENT DE GRANDES QUANTITES D'AEROSOLS CARBONES (CARBONE-SUIE ET CARBONE ORGANIQUE) DANS L'ATMOSPHERE. A CEUX-CI SE RAJOUTE UNE SOURCE BIOGENIQUE DE CARBONE ORGANIQUE PARTICULAIRE. L'IMPACT DE CES AEROSOLS SUR LA CHIMIE ATMOSPHERIQUE ET LE BILAN RADIATIF DEPEND DE LEURS PROPRIETES (TAILLE, COMPOSITION CHIMIQUE ET HYDROSOLUBILITE) SUSCEPTIBLES DE CHANGER EN FONCTION DES SOURCES ET D'EVOLUER DURANT LE TRANSPORT DES PARTICULES. LES PROPRIETES DES AEROSOLS CARBONES ONT ETE ETUDIE POUR DIFFERENTES SOURCES EN MILIEU URBAIN (PARIS, THESSALONIQUE), TROPICAL (REPUBLIQUE CENTRAFRICAINE) ET ARCTIQUE (SEVETTIJARVI, FINLANDE). LES PRELEVEMENTS ONT ETE EFFECTUES A DIFFERENTES DISTANCES DES SOURCES AFIN D'OBSERVER LES PROCESSUS DE VIEILLISSEMENT DES PARTICULES. LA MESURE DES DIFFERENTES FRACTIONS CARBONEES PARTICULAIRES (CARBONE-SUIE (BC), ORGANIQUE (OC) ET ORGANIQUE HYDROSOLUBLE (WSOC) AINSI QUE DES CONCENTRATIONS EN NOMBRE DE PARTICULES A PERMIS DE PROPOSER DIVERS INDICATEURS DE VIEILLISEMENTS. PARMI CES DERNIERS, LE RAPPORT WSOC/OC QUI CROIT PAR VIEILLISSEMENT PHOTOCHIMIQUE EST PARTICULIEREMENT INTERESSANT CAR IL DONNE EGALEMENT DES INDICATIONS SUR LA DISPARITION DES PARTICULES PAR ENTRAINEMENT DANS LES PLUIES. LE RAPPORT BC/OC, SUSCEPTIBLE D'AUGMENTER PAR LESSIVAGE D'OC OU DE DIMINUER PAR FORMATION D'OC SECONDAIRE A MONTRE UNE EVOLUTION DIFFERENTE SELON LES CARACTERISTIQUES DES AEROSOLS (CARACTERE HYDROSOLUBLE) ET DE L'ENVIRONNEMENT ETUDIE (PHOTOCHIMIE, HUMIDITE). CETTE ETUDE A MIS EN VALEUR LA GRANDE VARIABILITE DES PROPRIETES D'ABSORPTION DE BC () EN RELATION AVEC LE GROSSISSEMENT DES PARTICULES ET LEUR ETAT DE MELANGE (INTERNE OU EXTERNE). ENFIN, CES RESULTATS EXPERIMENTAUX POURRONT ETRE UTILISES DANS LES FUTURES ETUDES DE MODELISATION DE L'IMPACT RADIATIF DES AEROSOLS.
Author: STEPHANE.. RUELLAN
Publisher:
ISBN:
Category :
Languages : fr
Pages : 198
Get Book Here
Book Description
LES DIFFERENTS PROCESSUS DE COMBUSTION GENERENT DE GRANDES QUANTITES D'AEROSOLS CARBONES (CARBONE-SUIE ET CARBONE ORGANIQUE) DANS L'ATMOSPHERE. A CEUX-CI SE RAJOUTE UNE SOURCE BIOGENIQUE DE CARBONE ORGANIQUE PARTICULAIRE. L'IMPACT DE CES AEROSOLS SUR LA CHIMIE ATMOSPHERIQUE ET LE BILAN RADIATIF DEPEND DE LEURS PROPRIETES (TAILLE, COMPOSITION CHIMIQUE ET HYDROSOLUBILITE) SUSCEPTIBLES DE CHANGER EN FONCTION DES SOURCES ET D'EVOLUER DURANT LE TRANSPORT DES PARTICULES. LES PROPRIETES DES AEROSOLS CARBONES ONT ETE ETUDIE POUR DIFFERENTES SOURCES EN MILIEU URBAIN (PARIS, THESSALONIQUE), TROPICAL (REPUBLIQUE CENTRAFRICAINE) ET ARCTIQUE (SEVETTIJARVI, FINLANDE). LES PRELEVEMENTS ONT ETE EFFECTUES A DIFFERENTES DISTANCES DES SOURCES AFIN D'OBSERVER LES PROCESSUS DE VIEILLISSEMENT DES PARTICULES. LA MESURE DES DIFFERENTES FRACTIONS CARBONEES PARTICULAIRES (CARBONE-SUIE (BC), ORGANIQUE (OC) ET ORGANIQUE HYDROSOLUBLE (WSOC) AINSI QUE DES CONCENTRATIONS EN NOMBRE DE PARTICULES A PERMIS DE PROPOSER DIVERS INDICATEURS DE VIEILLISEMENTS. PARMI CES DERNIERS, LE RAPPORT WSOC/OC QUI CROIT PAR VIEILLISSEMENT PHOTOCHIMIQUE EST PARTICULIEREMENT INTERESSANT CAR IL DONNE EGALEMENT DES INDICATIONS SUR LA DISPARITION DES PARTICULES PAR ENTRAINEMENT DANS LES PLUIES. LE RAPPORT BC/OC, SUSCEPTIBLE D'AUGMENTER PAR LESSIVAGE D'OC OU DE DIMINUER PAR FORMATION D'OC SECONDAIRE A MONTRE UNE EVOLUTION DIFFERENTE SELON LES CARACTERISTIQUES DES AEROSOLS (CARACTERE HYDROSOLUBLE) ET DE L'ENVIRONNEMENT ETUDIE (PHOTOCHIMIE, HUMIDITE). CETTE ETUDE A MIS EN VALEUR LA GRANDE VARIABILITE DES PROPRIETES D'ABSORPTION DE BC () EN RELATION AVEC LE GROSSISSEMENT DES PARTICULES ET LEUR ETAT DE MELANGE (INTERNE OU EXTERNE). ENFIN, CES RESULTATS EXPERIMENTAUX POURRONT ETRE UTILISES DANS LES FUTURES ETUDES DE MODELISATION DE L'IMPACT RADIATIF DES AEROSOLS.
Author: Bruno Voituriez
Publisher: UNESCO
ISBN:
Category : Science
Languages : en
Pages : 132
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Book Description
El Nino, caprice of the heavens, scapegoat for every calamity? The general public cannot really understand what is behind the El Nino phenomenon. The book offers a tour of the Earth's climate to understand one of its normal but extreme components.
Author: Andrew Brooks
Publisher: Zed Books Ltd.
ISBN: 1783600691
Category : Business & Economics
Languages : en
Pages : 224
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Book Description
‘An interesting and important account.’ Daily Telegraph Have you ever stopped and wondered where your jeans came from? Who made them and where? Ever wondered where they end up after you donate them for recycling? Following a pair of jeans, Clothing Poverty takes the reader on a vivid around-the-world tour to reveal how clothes are manufactured and retailed, bringing to light how fast fashion and clothing recycling are interconnected. Andrew Brooks shows how recycled clothes are traded across continents, uncovers how retailers and international charities are embroiled in commodity chains which perpetuate poverty, and exposes the hidden trade networks which transect the globe. Stitching together rich narratives, from Mozambican markets, Nigerian smugglers and Chinese factories to London’s vintage clothing scene, TOMS shoes and Vivienne Westwood’s ethical fashion lines, Brooks uncovers the many hidden sides of fashion.
Author: Archibald Geikie
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 192
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Author: Lord William Taylour
Publisher: W W Norton & Company Incorporated
ISBN: 9780500275863
Category : History
Languages : en
Pages : 180
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Book Description
Studies the distinctive culture of the Mycenaeans, examining the architectural, engineering and artistic achievements of this civilization which dominated the pre-Classical era of Greek history.
Author: Emily Vermeule
Publisher:
ISBN:
Category : Bronze age
Languages : en
Pages : 406
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Book Description
Author: Naomi Adelson
Publisher: University of Toronto Press
ISBN: 1442656980
Category : Social Science
Languages : en
Pages : 160
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Book Description
'Being Alive Well': Health and the Politics of Cree Well-Being is a critical medical anthropological analysis of health theory in the social sciences with specific reference to the James Bay Cree of northern Quebec. In it the author argues that definitions of health are not simply reflections of physiological soundness but convey broader cultural and political realities. The book begins with a treatise on the study of health in the social sciences and a call for a broader understanding of the cultural parameters of any definition of health. Following a chapter that outlines the history of the Whapmagoostui (Great Whale River) region and the people, Adelson presents the underlying symbolic foundations of a Cree concept of health, or miyupimaatisiiun. The core of this book is an ethnographic study of the Whapmagoostui Cree and their particular concept of "health" (miyupimaatisiiun or "being alive well"). That concept is mediated by history, cultural practices, and the contemporary world of the Cree, including their fundamental concerns about their land and culture. In the contemporary context, health – or more specifically, "being alive well" – for the Cree of Great Whale is an intimate fusion of social, political, and personal well-being, thus linking individual bodies to a larger socio-political reality.
Author: John Tyndall
Publisher:
ISBN:
Category : Alps
Languages : en
Pages : 140
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Book Description
Author: John Tyndall
Publisher:
ISBN:
Category : Force and energy
Languages : en
Pages : 624
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Book Description
Author: Baron George Cuvier
Publisher: Createspace Independent Publishing Platform
ISBN: 9781978392069
Category :
Languages : en
Pages : 356
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Book Description
Jean Léopold Nicolas Frédéric Cuvier (August 23, 1769 - May 13, 1832), known as Georges Cuvier, was a French naturalist and zoologist. Cuvier was a major figure in natural sciences research in the early 19th century, and was instrumental in establishing the fields of comparative anatomy and vertebrate paleontology through his work in comparing living animals with fossils. He established animal extinctions as a fact, and was the most influential proponent of catastrophism in geology in the early 19th century. His most famous work is the Le Règne Animal (1817; English: The Animal Kingdom). In 1819, he was created a peer for the life in honor of his scientific contributions. Thereafter he was known as Baron Cuvier.
