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Author: Jean Abdo
Publisher:
ISBN:
Category :
Languages : fr
Pages : 157
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Book Description
L'ECHOGRAPHIE ULTRASONORE EST UNE TECHNIQUE D'IMAGERIE UTILISEE EN IMAGERIE MEDICALE ET EN CONTROLE NON DESTRUCTIF. EN VUE DE L'ELABORATION D'UN OUTIL DE SIMULATION D'UN ECHOGRAPHE ULTRASONORE A FOCALISATION DYNAMIQUE, NOUS AVONS CALCULE LES FONCTIONS DE DIFFRACTION ET LES FONCTIONS DE TRANSFERT DES ELEMENTS EMETTEURS OU RECEPTEURS DES CAPTEURS PIEZOELECTRIQUES DE FORME CIRCULAIRE OU RECTANGULAIRE. NOUS NOUS SOMMES SURTOUT INTERESSES AUX BARRETTES LINEAIRES ET AUX SONDES ANNULAIRES. NOUS AVONS PU AUSSI VALIDER NOS MODELES EN COMPARANT NOS RESULTATS THEORIQUES AUX RESULTATS EXPERIMENTAUX QUE NOUS AVONS RELEVES AU COURS DES EXPERIENCES QUE NOUS AVONS MENEES
Author: Jean Abdo
Publisher:
ISBN:
Category :
Languages : fr
Pages : 157
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Book Description
L'ECHOGRAPHIE ULTRASONORE EST UNE TECHNIQUE D'IMAGERIE UTILISEE EN IMAGERIE MEDICALE ET EN CONTROLE NON DESTRUCTIF. EN VUE DE L'ELABORATION D'UN OUTIL DE SIMULATION D'UN ECHOGRAPHE ULTRASONORE A FOCALISATION DYNAMIQUE, NOUS AVONS CALCULE LES FONCTIONS DE DIFFRACTION ET LES FONCTIONS DE TRANSFERT DES ELEMENTS EMETTEURS OU RECEPTEURS DES CAPTEURS PIEZOELECTRIQUES DE FORME CIRCULAIRE OU RECTANGULAIRE. NOUS NOUS SOMMES SURTOUT INTERESSES AUX BARRETTES LINEAIRES ET AUX SONDES ANNULAIRES. NOUS AVONS PU AUSSI VALIDER NOS MODELES EN COMPARANT NOS RESULTATS THEORIQUES AUX RESULTATS EXPERIMENTAUX QUE NOUS AVONS RELEVES AU COURS DES EXPERIENCES QUE NOUS AVONS MENEES
Author: Nazir Faham
Publisher:
ISBN:
Category :
Languages : fr
Pages : 300
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Book Description
CE TRAVAIL CONSISTE A CONCEVOIR ET A REALISER UN SYSTEME DE FOCALISATION SPATIO-TEMPORELLE DE L'ENERGIE ULTRASONORE AVEC UN BALAYAGE INFORMATISE DE LA TACHE FOCALE. NOUS SOMMES PARTIS D'UNE ANTENNE MULTI-ELEMENTS DESTINEE A L'AUSCULTATION DES OUVRAGES D'ART EN GENIE CIVIL A DES PROFONDEURS SUPERIEURES A UN METRE PAR ECHOGRAPHIE ULTRASONORE. LA REALISATION DE CE SYSTEME DE FOCALISATION SPATIO-TEMPORELLE IMPLANTE SUR ORDINATEUR A NECESSITE LA CONCEPTION ET LA REALISATION : - D'UNE CARTE ELECTRONIQUE DESTINEE D'UNE PART, A STOCKER ET A ORDONNER LES LIGNES A RETARD ET D'AUTRE PART A ASSURER L'INTERFACAGE ENTRE L'ORDINATEUR ET LES TRADUCTEURS EMETTEURS, - DES AMPLIFICATEURS DE PUISSANCE ALIMENTANT LES COUPLES DE TRADUCTEURS EMETTEURS, - D'UN LOGICIEL QUI GENERE LES TRAINS DE SIGNAUX CARRES IDENTIQUES SELON LES SPECIFICATIONS EXIGEES ET LES LIGNES A RETARD TEMPOREL ASSOCIEES. LES RESULTATS OBTENUS SUR UN BLOC TEST EN BETON DE GRANDES DIMENSIONS MONTRENT QUE LE SYSTEME REALISE S'EST REVELE PERFORMANT LORS DE LA DETECTION DE DISCONTINUITES D'IMPEDANCE ACOUSTIQUE A GRANDE DISTANCE : NOUS AVONS LOCALISE SANS DIFFICULTE UNE ANOMALIE SITUEE A 1,2 M DE L'ANTENNE ET NOUS AVONS PU DISTINGUER AISEMENT L'ECHO DE FOND DU BLOC SITUE A 1,8 M.
Author: Jean-Charles Dubuis
Publisher:
ISBN:
Category :
Languages : fr
Pages : 177
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Book Description
NOTIONS DE PHYSIQUE FONDAMENTALE DES ULTRASONS ET APPLICATION A L'ECHOGRAPHIE ULTRASONORE DANS LE DOMAINE BIOMEDICAL. ETUDE ET REALISATION D'UN OUTIL D'EVALUATION METTANT EN OEUVRE UN ECHOGRAPHE ULTRASONORE A BALAYAGE SECTORIEL ELECTRONIQUE ET FOCALISATION DYNAMIQUE. ANALYSE DES RESULTATS OBTENUS AVEC L'APPAREILLAGE DE PREMIERE GENERATION. DETERMINATION DES FACTEURS ESSENTIELS DE L'APPAREILLAGE DE SECONDE GENERATION
Author: Susanna Sarti
Publisher: British Archaeological Reports Oxford Limited
ISBN:
Category : Antiques & Collectibles
Languages : en
Pages : 314
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Book Description
Campana, a businessman from Rome, formed one of the most important private collections of antiquities of the 19th century yet it has been little studied. This thesis examines Campana's private life, his role as patron of the arts, archaeologist and collector and his trial for fraud, ending in exile.
Author: John Davidson Beazley
Publisher: Oxford, Clarendon P
ISBN:
Category : Decoration and ornament, Etruscan
Languages : en
Pages : 418
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Book Description
Author: Manolēs Andronikos
Publisher:
ISBN:
Category : Art, Ancient
Languages : en
Pages : 252
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Book Description
Excerpt from the prologue written by the author MANOLIS ANDRONICOS, "It has been necessary to try to produce a text which will serve the needs of the specialist without ignoring those of the general reader. Such attempts are far from easy in execution and not infrequently succeed only in sacrificing academic integrity without providing adequate information for the non-specialist. It is not for me to say if I have achieved what I set out to do. Nevertheless, in addition to the text, there are the illustrations to the book which I believe contribute to the success of its purpose as I have defined it. A picture is always the best means - after the objects themselves - for every reader, specialist or not, to gain a closer idea of archaeological finds. Once I had decided to write the book I considered it essential not to limit myself to the recent impressive finds from the royal tombs, but to set before the reader a synoptic but solid account of all the archaeological finds in the area. In this way its considerable interest becomes comprehensible - an area which has yielded graves containing hand-made prehistoric pottery and bronze jewellery, a magnificent architectural complex dating to the last years of the fourth century, the theatre of a city, a small temple and a series of monumental Macedonian tombs with unique painted compositions of the classical period, masterpieces of jewellery made by Greek goldsmiths, of miniature sculpture and the most magnificent products of Greek metalworking. The brilliance of the latter sheds new light on the older finds so that these acquire their proper perspective. In addition to all this, the finds from Vergina provide new information about Macedonian Hellenism, our knowledge of which so far is based almost exclusively on literary sources emanating from Athens. It is natural that that city, the only serious political rival to Macedonia, should frequently distort its enemy's true face and denigrate its historical contribution to the development of Hellenism, at least before the meteoric rise of Alexander the Great."
Author: Anna A. Trofimova
Publisher: Getty Publications
ISBN: 9780892368839
Category : Art
Languages : en
Pages : 328
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Book Description
The ancient Greeks traveled widely by sea and founded colonies in far-flung locations. On the north coast of the Black Sea were a number of such Greek settlements, places where the Greeks made contact with the local Scythian population. Greek goods were traded extensively throughout the region, and many of these often-luxurious articles eventually made their way into tombs. From its wealth of such Greek finds from the Black Sea, the State Hermitage Museum in St. Petersburg has lent some 175 Greek objects to an exhibition at the J. Paul Getty Museum at the Getty Villa. This richly illustrated catalogue to the exhibition presents nine essays on the archaeology of the northern Black Sea region and its history, culture, and art, including sculpture, pottery, gems, and jewelry. Written by curators at the State Hermitage Museum, Greeks on the Black Sea presents an intriguing world at once Greek and barbarian.
