Le attività di laboratorio e di tirocinio nella formazione universitaria

• Record Nr.: UNISA990002308970203316
• Pubbl/distr/stampa: Roma : Armando
• Descrizione fisica: v. ; 24 cm
• Collana: Il sicomoro
• Disciplina: 378.17382
• Soggetti: Insegnamento universitario -- Ruolo [dei] Laboratori
• Collocazione: II.4. 3823/
• Lingua di pubblicazione: Italiano
• Formato: Materiale a stampa
• Livello bibliografico: Monografia

L'organizzazione. / di W. Brown

• Record Nr.: UNINA990002728490403321
• Autore: Brown, Wilfred <1908-1985>
• Pubbl/distr/stampa: Milano : ISEDI, 1973
• Locazione: ECA
• Collocazione: 7-13-14
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia

Asphaltenes [[electronic resource] ] : Fundamentals and Applications / / edited by Maite Subirana, Eric Y. Sheu

• Record Nr.: UNINA9910792491103321
• Pubbl/distr/stampa: New York, NY : , : Springer US : , : Imprint : Springer, , 1995
• ISBN: 1-4757-9293-X
• Edizione: [1st ed. 1995.]
• Descrizione fisica: 1 online resource (XII, 246 p.)
• Disciplina: 660
• Soggetti: Chemical engineering; Inorganic chemistry; Organic chemistry; Polymers ; Materials science; Industrial Chemistry/Chemical Engineering; Inorganic Chemistry; Organic Chemistry; Polymer Sciences; Characterization and Evaluation of Materials
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: Bibliographic Level Mode of Issuance: Monograph
• Nota di bibliografia: Includes bibliographical references at the end of each chapters and index.
• Nota di contenuto: I. Colloidal Properties of Asphaltenes in Organic Solvents -- II. Sulfur and Nitrogen Molecular Structures in Asphaltenes and Related Materials Quantified by XANES Spectroscopy -- III. Solubility and Phase Behavior of Asphaltenes in Hydrocarbon Media -- IV. A Unified View of the Colloidal Nature of Asphaltenes -- V. The Effects of Asphaltenes on the Chemical and Physical Characteristics of Asphalt -- VI. Asphalt Emulsion for Environmental Coating and Encapsulation -- VII. Potential of Ultrasonic Generators for Use in Oil Wells and Heavy Crude Oil/Bitumen Transportation Facilities -- VIII. New Methods of Petroleum Sludge Disposal and Utilization.
• Sommario/riassunto: Asphaltenes have traditionally been viewed as being extremely complex, thus very hard to characterize. In addition, certain fundamental properties of asphaltenes have pre­ viously been ; inaccessible to study by traditional macroscopic methods, further limiting understanding of asphaltenes. These limitations inhibited development of descriptions regarding the microscopic structure and solution dynamics of asphaltenes. However, a variety ofmore recent studies have implied that asphaltenes share many chemical properties with the smaller, more tractable components of crude oils. Recent measurements have indicated that asphaltene molecular weights are not as !arge as previously thought, perhaps in the range of 600 to I 000 amu. In addition, new experimental methods applied to asphaltene chemical structures have been quite revealing, yielding a broad understanding. Conse­ quently, the ability to relate chemical structure with physical and chemical properties can be developed and extended to the understanding of important commercial properties of asphal­ tenes. This book treats significant new developments in the fundamentals and applications of asphaltenes. In the first section ofthe book, new experimental methods are described that characterize asphaltene structures from the molecular to colloidallength scale. The colloidal properties are understandable in terms of asphaltene chemical structures, especially with regard to the heteroatom impact on bonding. However, quantitative measurements of the of asphaltene self-association still need to be determined. In the second section of enthalpy this book, the fundamental understanding of asphaltenes is related riirectly to asphaltene utilization.