Author: Jean-Philippe Petitpierre
Publisher:
ISBN:
Category :
Languages : fr
Pages : 233
Book Description
Contribution à l'étude de l'oxydation électrochimique du Mn (II) en milieu sulfurique
Author: Jean-Philippe Petitpierre
Publisher:
ISBN:
Category :
Languages : fr
Pages : 233
Book Description
Publisher:
ISBN:
Category :
Languages : fr
Pages : 233
Book Description
Contribution à l'étude de l'oxydation électrochimique du Mn (II) en Mn (III) en milieu sulfurique concentré
CONTRIBUTION A L'ETUDE DE L'OXYDATION ANODIQUE DE QUELQUES IONS DE METAUX DE TRANSITION EN MILIEU MARIN RECONSTITUE
Author: Rodolphe Jund
Publisher:
ISBN:
Category :
Languages : fr
Pages : 103
Book Description
L'ETUDE ELECTROCHIMIQUE DE L'OXYDATION ANODIQUE DES IONS MN**(2+) ET FE**(2+) EN MILIEU MARIN RECONSTITUE A MONTRE QUE LA FORMATION DE DEPOTS EST PLUS RAPIDE LORS DE L'OXYDATION DE L'ION MN**(2+); ALORS QU'ELLE EST PLUS LENTE DANS LE CAS DE L'ION FE**(2+). CELA POURRAIT ALORS PERMETTRE DE COMPRENDRE POURQUOI LA TENEUR MOYENNE EN MANGANESE EST PLUS ELEVEE QUE CELLE EN FER DANS LES NODULES POLYMETALLIQUES MARINS. EN EFFET, LES POURCENTAGES MOYENS EN MANGANESE ET EN FER SONT RESPECTIVEMENT DE 35% ET DE 15%. EN OUTRE, ON POURRAIT ETUDIER L'EXTRACTION SELECTIVE, PAR REDUCTION ELECTROCHIMIQUE, DES CATIONS METALLIQUES DE CES CONCRETIONS POLYMETALLIQUES
Publisher:
ISBN:
Category :
Languages : fr
Pages : 103
Book Description
L'ETUDE ELECTROCHIMIQUE DE L'OXYDATION ANODIQUE DES IONS MN**(2+) ET FE**(2+) EN MILIEU MARIN RECONSTITUE A MONTRE QUE LA FORMATION DE DEPOTS EST PLUS RAPIDE LORS DE L'OXYDATION DE L'ION MN**(2+); ALORS QU'ELLE EST PLUS LENTE DANS LE CAS DE L'ION FE**(2+). CELA POURRAIT ALORS PERMETTRE DE COMPRENDRE POURQUOI LA TENEUR MOYENNE EN MANGANESE EST PLUS ELEVEE QUE CELLE EN FER DANS LES NODULES POLYMETALLIQUES MARINS. EN EFFET, LES POURCENTAGES MOYENS EN MANGANESE ET EN FER SONT RESPECTIVEMENT DE 35% ET DE 15%. EN OUTRE, ON POURRAIT ETUDIER L'EXTRACTION SELECTIVE, PAR REDUCTION ELECTROCHIMIQUE, DES CATIONS METALLIQUES DE CES CONCRETIONS POLYMETALLIQUES
Contribution à l'étude de l'oxydation electrochimique de l'acide nitreux et des ions nitrite
Contribution à l'étude de l'oxydation de l'étain II en milieu complexant
ICREEC 2019
Author: Ahmed Belasri
Publisher: Springer Nature
ISBN: 9811554447
Category : Technology & Engineering
Languages : en
Pages : 659
Book Description
This book highlights peer reviewed articles from the 1st International Conference on Renewable Energy and Energy Conversion, ICREEC 2019, held at Oran in Algeria. It presents recent advances, brings together researchers and professionals in the area and presents a platform to exchange ideas and establish opportunities for a sustainable future. Topics covered in this proceedings, but not limited to, are photovoltaic systems, bioenergy, laser and plasma technology, fluid and flow for energy, software for energy and impact of energy on the environment.
Publisher: Springer Nature
ISBN: 9811554447
Category : Technology & Engineering
Languages : en
Pages : 659
Book Description
This book highlights peer reviewed articles from the 1st International Conference on Renewable Energy and Energy Conversion, ICREEC 2019, held at Oran in Algeria. It presents recent advances, brings together researchers and professionals in the area and presents a platform to exchange ideas and establish opportunities for a sustainable future. Topics covered in this proceedings, but not limited to, are photovoltaic systems, bioenergy, laser and plasma technology, fluid and flow for energy, software for energy and impact of energy on the environment.
Analytical Methods in the Nuclear Fuel Cycle
The Boundaries of the West African Craton
Author: Nasser Ennih
Publisher: Geological Society of London
ISBN: 9781862392519
Category : Science
Languages : en
Pages : 552
Book Description
Publisher: Geological Society of London
ISBN: 9781862392519
Category : Science
Languages : en
Pages : 552
Book Description
Applied Mineralogy in the Mining Industry
Author: W. Petruk
Publisher: Elsevier
ISBN: 0080527337
Category : Technology & Engineering
Languages : en
Pages : 287
Book Description
Techniques of performing applied mineralogy investigations, and applications and capabilities of recently developed instruments for measuring mineral properties are explored in this book intended for practicing applied mineralogists, students in mineralogy and metallurgy, and mineral processing engineers. The benefits of applied mineralogy are presented by using in-depth applied mineralogy studies on base metal ores, gold ores, porphyry copper ores, iron ores and industrial minerals as examples. The chapter on base metal ores includes a discussion on the effects of liberation, particle sizes and surfaces coatings of Pb, Cu, Fe, Ca and So4- on the recoveries of sphalerite, galena and chalcopyrite. The chapter on gold discusses various methods of determining the quantities of gold in different minerals, including 'invisible' gold in pyrite and arsenopyrite, so that a balance of the distribution of gold among the minerals can be calculated. This book also discusses the roles of pyrite, oxygen, moisture and bacterial (thiobacillus ferrooxidans) on reactions that produce acidic drainage from tailings piles, and summarizes currently used and proposed methods of remediation of acidic drainage.
Publisher: Elsevier
ISBN: 0080527337
Category : Technology & Engineering
Languages : en
Pages : 287
Book Description
Techniques of performing applied mineralogy investigations, and applications and capabilities of recently developed instruments for measuring mineral properties are explored in this book intended for practicing applied mineralogists, students in mineralogy and metallurgy, and mineral processing engineers. The benefits of applied mineralogy are presented by using in-depth applied mineralogy studies on base metal ores, gold ores, porphyry copper ores, iron ores and industrial minerals as examples. The chapter on base metal ores includes a discussion on the effects of liberation, particle sizes and surfaces coatings of Pb, Cu, Fe, Ca and So4- on the recoveries of sphalerite, galena and chalcopyrite. The chapter on gold discusses various methods of determining the quantities of gold in different minerals, including 'invisible' gold in pyrite and arsenopyrite, so that a balance of the distribution of gold among the minerals can be calculated. This book also discusses the roles of pyrite, oxygen, moisture and bacterial (thiobacillus ferrooxidans) on reactions that produce acidic drainage from tailings piles, and summarizes currently used and proposed methods of remediation of acidic drainage.
Flexoelectricity in Liquid Crystals
Author: Agnes Buka
Publisher: World Scientific
ISBN: 1848167997
Category : Science
Languages : en
Pages : 299
Book Description
The book intends to give a state-of-the-art overview of flexoelectricity, a linear physical coupling between mechanical (orientational) deformations and electric polarization, which is specific to systems with orientational order, such as liquid crystals. Chapters written by experts in the field shed light on theoretical as well as experimental aspects of research carried out since the discovery of flexoelectricity. Besides a common macroscopic (continuum) description the microscopic theory of flexoelectricity is also addressed. Electro-optic effects due to or modified by flexoelectricity as well as various (direct and indirect) measurement methods are discussed. Special emphasis is given to the role of flexoelectricity in pattern-forming instabilities. While the main focus of the book lies in flexoelectricity in nematic liquid crystals, peculiarities of other mesophases (bent-core systems, cholesterics, and smectics) are also reviewed. Flexoelectricity has relevance to biological (living) systems and can also offer possibilities for technical applications. The basics of these two interdisciplinary fields are also summarized.
Publisher: World Scientific
ISBN: 1848167997
Category : Science
Languages : en
Pages : 299
Book Description
The book intends to give a state-of-the-art overview of flexoelectricity, a linear physical coupling between mechanical (orientational) deformations and electric polarization, which is specific to systems with orientational order, such as liquid crystals. Chapters written by experts in the field shed light on theoretical as well as experimental aspects of research carried out since the discovery of flexoelectricity. Besides a common macroscopic (continuum) description the microscopic theory of flexoelectricity is also addressed. Electro-optic effects due to or modified by flexoelectricity as well as various (direct and indirect) measurement methods are discussed. Special emphasis is given to the role of flexoelectricity in pattern-forming instabilities. While the main focus of the book lies in flexoelectricity in nematic liquid crystals, peculiarities of other mesophases (bent-core systems, cholesterics, and smectics) are also reviewed. Flexoelectricity has relevance to biological (living) systems and can also offer possibilities for technical applications. The basics of these two interdisciplinary fields are also summarized.