Download or read book Comparaison de deux syst mes de polissage de composite written by Inès Ettwiller and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les résines composites sont aujourd'hui largement plébiscitées pour la réalisation de restaurations directes. Ces dernières possèdent des propriétés mécaniques et esthétiques de plus en plus performantes, grâce, notamment, à l'évolution de la chimie de la phase résineuse mais également, grâce à l'augmentation de la teneur en charges. Les composites directs majoritairement utilisés aujourd'hui sont des composites microhybrides ou microhybrides nanochargés. Actuellement, quand on envisage une restauration en composite, le débat porte majoritairement sur le choix des matériaux et sur la technique de stratification. La finition et le polissage des composites, souvent réalisés très rapidement en fin de séance, restent les étapes les plus négligées. Si les protocoles de stratification des composites sont aujourd'hui bien codifiés, aucun consensus n'existe, à l'heure actuelle, pour le polissage des composites. Par ailleurs, il est nécessaire de corréler le système de polissage à la nature du composite. En 2017, une thèse de revue de la littérature sur le polissage des composites a été réalisée à l'université de Bordeaux. La thèse conclut que le système majoritairement étudié et utilisé dans la pratique est le système de disques diamantés Sof-Lex®. D'après ces études, le Sof-Lex® permet d'obtenir la surface la moins rugueuse. En revanche, aucune étude ne fait mention du respect de l'intégrité des tissus dentaires bordant la restauration. Le polissoir idéal doit certes permettre de lisser et polir la surface en composite, mais il doit être suffisamment sélectif pour préserver au maximum l'émail adjacent. L'objectif de ce travail de thèse est de comparer deux séquences de polissage : le Sof-Lex® et un nouveau système commercialisé par Komet conçu pour optimiser le polissage du composite tout en préservant les tissus adjacents : le Kompoline®. Une étude ex-vivo a été réalisée sur dents avulsées. L'intégrité des tissus dentaires bordant la restauration a été observée au microscope numérique. Ce travail de recherche pourrait aboutir à une prise de conscience du délabrement dentaire généré par les séquences de polissage actuellement plébiscitées.
Download or read book Faecal Sludge Management written by Linda Strande and published by IWA Publishing. This book was released on 2014-08-15 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is estimated that literally billions of residents in urban and peri-urban areas of Africa, Asia, and Latin America are served by onsite sanitation systems (e.g. various types of latrines and septic tanks). Until recently, the management of faecal sludge from these onsite systems has been grossly neglected, partially as a result of them being considered temporary solutions until sewer-based systems could be implemented. However, the perception of onsite or decentralized sanitation technologies for urban areas is gradually changing, and is increasingly being considered as long-term, sustainable options in urban areas, especially in low- and middle-income countries that lack sewer infrastructures. This is the first book dedicated to faecal sludge management. It compiles the current state of knowledge of the rapidly evolving field of faecal sludge management, and presents an integrated approach that includes technology, management, and planning based on Sandecs 20 years of experience in the field. Faecal Sludge Management: Systems Approach for Implementation and Operation addresses the organization of the entire faecal sludge management service chain, from the collection and transport of sludge, and the current state of knowledge of treatment options, to the final end use or disposal of treated sludge. The book also presents important factors to consider when evaluating and upscaling new treatment technology options. The book is designed for undergraduate and graduate students, and engineers and practitioners in the field who have some basic knowledge of environmental and/or wastewater engineering.
Download or read book The Metals Black Book written by Michael Lash Wayman and published by . This book was released on 1998 with total page 738 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dictionary of Building and Civil Engineering written by Don Montague and published by Taylor & Francis. This book was released on 1996 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dual-language dictionary lists over 20,000 specialist terms in both French and English, covering architecture, building, engineering and property terms. It meets the needs of all building professionals working on projects overseas. It has been comprehensively researched and compiled to provide an invaluable reference source in an increasingly European marketplace.
Download or read book CASTI Metals Black Book written by John E. Bringas and published by . This book was released on 2003 with total page 854 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Journal of Chemistry written by and published by . This book was released on 1998 with total page 1108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Code of Practice for Metal Mines written by Canada. Environment Canada and published by . This book was released on 2009 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes operational activities and associated environmental concerns of this industrial sector. The document applies to the complete life cycle of mining, from exploration to mine closure, and environmental management practices are recommended to mitigate the identified environmental concerns. The recommended practices in the Code include the development and implementation of environmental management tools, the management of wastewater and mining wastes, and the prevention and control of environmental releases to air, water and land. The Code of Practice will be adopted by Environment Canada and others as a guidance document that recommends environmental protection practices for the mine life cycle. The Code applies specifically to metal mines but will provide useful guidance for all sectors of the mining industry.
Download or read book The Boundaries of the West African Craton written by Nasser Ennih and published by Geological Society of London. This book was released on 2008 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Metals Red Book written by John E. Bringas and published by . This book was released on 1998 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book How to Design Wastewater Systems for Local Conditions in Developing Countries written by David M. Robbins and published by IWA Publishing. This book was released on 2014-03-15 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a practical handbook providing a step-by-step approach to the techniques used for characterizing wastewater sources and investigating sites where collection, treatment and reuse/disposal technologies will be installed. It is intended to help enable local implementation of on-site and decentralized wastewater management system (DWMS)for wide scale use in development settings. How to Design Wastewater Systems for Local Conditions in Developing Countries helps local service providers and regulatory officials make informed decisions through the use of tools, checklists and case studies. It includes a link to a web based community of on-site and decentralized wastewater professionals, which contains related tools and case studies. This handbook serves as a reference for training classes, certification programs, and higher education programs in civil and sanitary engineering. There is an increasing interest on the part of local government officials and private sector service providers to implement wastewater treatment systems to solve sanitation problems. The model presented in this handbook promotes activities that first generate data related to source and site conditions that represent critical inputs, and then applies this information to the technology selection process. Matching the most appropriate technologies to the specific needs of the wastewater project is the key that leads to long term sustainability. How to Design Wastewater Systems for Local Conditions in Developing Countries is an invaluable resource for public sector decision makers and private sector service providers in developing countries. It is also a useful text for students at engineering colleges in developing countries interested in taking a class that teaches the methods of decentralized wastewater management system (DWMS) development.
Download or read book Guide to the International Registration of Marks under the Madrid Agreement and the Madrid Protocol written by World Intellectual Property Organization and published by WIPO. This book was released on 2019-09-11 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Guide is primarily intended for applicants and holders of international registrations of marks, as well as officials of the competent administrations of the Member States of the Madrid Union. It leads them through the various steps of the international registration procedure and explains the essential provisions of the Madrid Agreement, the Madrid Protocol and the Common Regulations.
Download or read book Optical Scattering written by John C. Stover and published by SPIE-International Society for Optical Engineering. This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first edition of this book concentrated on relating scatter from optically smooth surfaces to the microroughness on those surfaces. After spending six years in the semiconductor industry, Dr. Stover has updated and expanded the third edition. Newly included are scatter models for pits and particles as well as the use of wafer scanners to locate and size isolated surface features. New sections cover the multimillion-dollar wafer scanner business, establishing that microroughness is the noise, not the signal, in these systems. Scatter measurements, now routinely used to determine whether small-surface features are pits or particles and inspiring new technology that provides information on particle material, are also discussed. These new capabilities are now supported by a series of international standards, and a new chapter reviews those documents. New information on scatter from optically rough surfaces has also been added. Once the critical limit is exceeded, scatter cannot be used to determine surface-roughness statistics, but considerable information can still be obtained - especially when measurements are made on mass-produced products. Changes in measurement are covered, and the reader will find examples of scatter measurements made using a camera for a fraction of the cost and in a fraction of the time previously possible. The idea of relating scatter to surface appearance is also discussed, and appearance has its own short chapter. After all, beauty is in the eye of the beholder, and what we see is scattered light.
Download or read book A Phonetic Dictionary of the English Language written by Hermann Michaelis and published by . This book was released on 1913 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Metals Black Book written by and published by . This book was released on 1998 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Compendium of Sanitation Systems and Technologies written by Elizabeth Tilley and published by . This book was released on 2014 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Jinsha site written by 成都金沙遗址博物馆 and published by 中信出版社. This book was released on 2006 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Perspectives in Dental Ceramics written by Jack D. Preston and published by Quintessence Publishing (IL). This book was released on 1988 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt:
