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Book Description
ETUDE DES PROPRIETES ELECTRIQUES ET DE LA SOLUBILITE D'UNE NOUVELLE CLASSE DE MATERIAUX VITREUX A BASE DE FLUORURES DE METAUX (ZR, TH, SC, U, PB). DESCRIPTION DETAILLEE DE LA SYNTHESE DES VERRES ET ANALYSE DES PHASES PAR RAYONS X ET CALORIMETRIE DIFFERENTIELLE
Book Description
ETUDE DES PROPRIETES ELECTRIQUES ET DE LA SOLUBILITE D'UNE NOUVELLE CLASSE DE MATERIAUX VITREUX A BASE DE FLUORURES DE METAUX (ZR, TH, SC, U, PB). DESCRIPTION DETAILLEE DE LA SYNTHESE DES VERRES ET ANALYSE DES PHASES PAR RAYONS X ET CALORIMETRIE DIFFERENTIELLE
Book Description
LES TRAVAUX DECRITS CONCERNENT PRINCIPALEMENT L'ETUDE DE VERRES DONT LE FORMATEUR DE RESEAU EST L'ANHYDRIDE PHOSPHORIQUE P 2O 5. UNE PARTIE DES RECHERCHES EST RELATIVE A LA SYNTHESE ET A LA CARACTERISATION DE VERRES A BASSE TEMPERATURE DE TRANSITION VITREUSE ET A ETE EFFECTUEE EN ROUMANIE. UNE PREMIERE FAMILLE DE MATERIAUX EST CONSTITUEE DE VERRES POUR LESQUELS L'OXYDE FORMATEUR P 2O 5, PARTIELLEMENT SUBSTITUE PAR B 2O 3 OU SIO 2, EST ASSOCIE AUX MODIFICATEURS SNO, PBO OU ZNO ET AUX SELS HALOGENES SNF 2, PBF 2 OU ZNCL 2. UNE SECONDE FAMILLE DE VERRES, BASEE SUR DES PHOSPHOSULFATES VITREUX DU SYSTEME P 2O 5-ZNSO 4-K 2SO 4-LI 2SO 4, A ETE EXPLOREE EN VUE D'UNE UTILISATION PLUS SPECIFIQUE DE CES MATRICES COMME SOLVANT DE MOLECULES OU POLYMERES ORGANIQUES. DES SYSTEMES NE CONTENANT PAS P 2O 5 COMME FORMATEUR DE RESEAU ONT EGALEMENT ETE ETUDIES ET SONT PRESENTES EN ANNEXE. UNE SECONDE PARTIE DES TRAVAUX A ETE CONSACREE A L'ETUDE DES PROPRIETES ELECTRIQUES DES VERRES DU SYSTEME P 2O 5-NA 2O-V 2O 5 ET A ETE REALISEE EN FRANCE. LA CONDUCTIVITE ELECTRIQUE (IONIQUE, ELECTRONIQUE OU MIXTE) DE CES MATERIAUX A ETE ETUDIEE EN FONCTION DE LA TEMPERATURE DANS LA GAMME 25 - 400\C. L'ETUDE DE L'INFLUENCE DE LA PRESSION ISOSTATIQUE (1 - 5000 BARS) A MIS EN EVIDENCE UNE DIFFERENCE DE COMPORTEMENT POUR LES VERRES A CONDUCTION IONIQUE (P 2O 5-NA 2O) ET ELECTRONIQUE (P 2O 5-V 2O 5). POUR LES PREMIERS, ON OBSERVE UNE DIMINUTION DE LA CONDUCTIVITE AVEC LA PRESSION ET L'EFFET INVERSE POUR LES SECONDS. UNE APPROCHE THERMODYNAMIQUE DES VARIATIONS DE LA CONDUCTIVITE EN FONCTION DE CES DEUX PARAMETRES (TEMPERATURE ET PRESSION) A ETE DEVELOPPEE ET CONFRONTEE AUX MODELES MICROSCOPIQUES PROPOSES, C'EST-A-DIRE UN MECANISME DE SAUT PAR PAIRES INTERSTITIELLES POUR LA CONDUCTION IONIQUE ET LE MECANISME DU PETIT POLARON POUR LA CONDUCTION ELECTRONIQUE.
Author: AHMED.. EL HOUARI Publisher: ISBN: Category : Languages : fr Pages : 130
Book Description
PREPARATION DE NOUVEAUX MATERIAUX VITREUX DANS LE SYSTEME QUATERNAIRE BAF::(2)-THF::(4)-YF::(3)-ZNF::(2). DETERMINATION DES TEMPERATURES CARACTERISTIQUES T::(G), T::(C), T::(P) ET DE LEUR EVOLUTION EN FONCTION DU POURCENTAGE AU BAF2. CES VERRES FLUORES PRESENTENT UN TRES LARGE DOMAINE DE TRANSPARENCE ALLANT DE 0,3MU M DANS L'ULTRAVIOLET A 8MU M DANS L'INFRAROUGE
Author: YVES.. LE PAGE Publisher: ISBN: Category : Languages : fr Pages : 190
Book Description
LES SYSTEMES TERNAIRES LNF::(3)-BAF::(2)-MNF::(2) ONT FAIT L'OBJET D'UNE ETUDE SYSTEMATIQUE. LES COMPOSITIONS PERMETTANT LA FORMATION DE VERRE ONT ETE OPTIMISEES EN FAISANT INTERVENIR UN QUATRIEME COMPOSE: LE TETRAFLUORURE DE THORIUM. LES PROPRIETES MAGNETIQUES ET OPTIQUES, SPECIALEMENT LA TRANSMISSION DANS L'INFRAROUGE MOYEN, SONT DECRITES
Author: B. Scrosati Publisher: Springer Science & Business Media ISBN: 9401119163 Category : Science Languages : en Pages : 375
Book Description
The main motivation for the organization of the Advanced Research Workshop in Belgirate was the promotion of discussions on the most recent issues and the future perspectives in the field of Solid State lonics. The location was chosen on purpose since Belgirate was the place were twenty years ago, also then under the sponsorship of NATO, the very first international meeting on this important and interdisciplinary field took place. That meeting was named "Fast Ion Transport in Solids" and gathered virtually everybody at that time having been active in any aspect of motion of ions in solids. The original Belgirate Meeting made for the first time visible the technological potential related to the phenomenon of the fast ionic transport in solids and, accordingly, the field was given the name "Solid State lonics". This field is now expanded to cover a wide range of technologies which includes chemical sensors for environmental and process control, electrochromic windows, mirrors and displays, fuel cells, high performance rechargeable batteries for stationary applications and electrotraction, chemotronics, semiconductor ionics, water electrolysis cells for hydrogen economy and other applications. The main idea for holding an anniversary meeting was that of discussing the most recent issues and the future perspectives of Solid State lonics just twenty years after it has started at the same location on the lake Maggiore in North Italy.
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.
Author: Wade H. Shafer Publisher: Springer ISBN: Category : Education Languages : en Pages : 328
Book Description
Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1 957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna tional publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 28 (thesis year 1 983) a total of 10,661 theses titles from 26 Canadian and 197 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this important annual reference work. While Volume 28 reports theses submitted in-1983, on occasion, certain univer sities do report theses submitted in previous years but not reported at the time.
Author: Gunarathna Perera Willorage
Author: Gunarathna Perera Willorage
Author: Ahmed el- Houari (auteur d'une thèse de sciences.)
Author: MARIA-CAMELIA.. BALASOIU UNGUREANU
Author: AHMED.. EL HOUARI
Author: YVES.. LE PAGE
Author: Yves Le Page (auteur d'une thèse de sciences.)
Author: International Atomic Energy Agency
Author: B. Scrosati
Author: Ahmed Belasri
Author: Wade H. Shafer