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Proprietes Physico Chimiques De Particules Obtenues Par Granulation Humide
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Book Synopsis PROPRIETES PHYSICO-CHIMIQUES DE PARTICULES OBTENUES PAR GRANULATION HUMIDE by : Valérie Darmon
Download or read book PROPRIETES PHYSICO-CHIMIQUES DE PARTICULES OBTENUES PAR GRANULATION HUMIDE written by Valérie Darmon and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Les neutres pour granules pharmaceutiques sont nés de l'industrie de la confiserie où ils étaient utilisés à des fins décoratives. L'industrie pharmaceutique s'est intéressée à ce produit dans les années 50, révolutionnant le monde de la granulation. " Les neutres, composés de sucre et d'amidon, inertes, inodores et sans goût, sont utilisés aujourd'hui comme noyaux sur lesquels est monté le principe actif et éventuellement par dessus un enrobage permettant une libération modifiée. Le but de notre travail a été de caractériser au mieux ce produit afin de justifier d'une qualité pharmaceutique et d'élaborer une monographie à la pharmacopée. Pour cela, trois systèmes de granulométries différentes ont été étudiés: 250/355mm, 500/600mm, 850/1000mm. Deux axes ont été abordés: un axe physico-chimique ayant permis d'observer une évolution d'un facteur textural en fonction de la granulométrie des systèmes et un axe mécanique montrant un très bon comportement en compression ainsi qu'une très bonne cohésion des compacts obtenus
Book Synopsis Influence de la viscosité et de la tension superficielle du liquide de mouillage sur la maîtrise du procédé de granulation humide à fort taux de cisaillement by : Baptiste Chesse
Download or read book Influence de la viscosité et de la tension superficielle du liquide de mouillage sur la maîtrise du procédé de granulation humide à fort taux de cisaillement written by Baptiste Chesse and published by . This book was released on 2013 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: La granulation humide et les phénomènes qui la gouvernent sont encore mal connus malgré son intérêt dans l’industrie pharmaceutique. Cette étude se centre sur la maîtrise de la granulation humide lors de la modification des propriétés physico-chimiques du liquide de mouillage dans le cas d’un mélangeur-granulateur à fort taux de cisaillement. Deux paramètres physico-chimiques ont été pris en compte : la viscosité du liquide du mouillage et sa tension superficielle. Les meilleurs résultats ayant été observés pour une viscosité soutenue, l’objectif a été d’augmenter la viscosité du mélange tout en maintenant la tension superficielle pour voir l’impact de ces modifications sur la maitrise du procédé et la qualité du grain obtenu. Deux composés ont été ajoutés dans le liquide de mouillage pour modifier les paramètres physicochimiques : le glycérol, qui permet une viscosité élevée et une tension superficielle maintenue, et l’HPMC, qui permet d’avoir une viscosité élevée malgré une tension superficielle un peu plus faible. Des séries de granulations humides ont été réalisées avec trois types de liquide de mouillage pour le glycérol de viscosité croissante (Glycérol 30%, Glycérol 50% et Glycérol 60%) et deux types de liquides de mouillage pour l’HPMC (HPMC 0.5 % et HPMC 1%) avec différents temps de mouillage de la poudre. Pour analyser le déroulement de la granulation humide et la qualité de la granulation, la mesure du couple sur l’arbre d’agitation est réalisée tout au long de l’ajout du liquide de mouillage. Ensuite, une analyse de la distribution granulométrique de la poudre et de l’évolution du diamètre des grains obtenus est réalisée. Au vu des résultats de couple, le procédé apparaît moins maitrisé avec le glycérol quand la viscosité augmente alors que ce phénomène est moins marqué avec l’HPMC où le procédé est mieux maîtrisé à viscosité équivalente. Le glycérol 30% et l’HPMC 1% semblent être les conditions les plus adéquates pour la maîtrise du procédé de granulation humide à haut taux de cisaillement. Ces résultats semblent se confirmer aussi bien du point de vue des études sur le couple que des études sur la distribution granulométrique et sur les l’évolution du diamètre des grains. Pour l’HPMC, ces résultats peuvent être expliqués par la tension superficielle plus faible des liquides de mouillage, qui favorise l’étalement des gouttes de liquides de mouillage et diminue la formation de gros grains. De plus, les propriétés liantes de l’HPMC pourraient expliquer ces bons résultats en facilitant l’adhérence des particules en début de granulation favorisant ainsi une granulation régulière de la poudre.
Book Synopsis Faecal Sludge Management by : Linda Strande
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.
Book Synopsis Poly(lactic acid) Science and Technology by : Alfonso Jiménez
Download or read book Poly(lactic acid) Science and Technology written by Alfonso Jiménez and published by Royal Society of Chemistry. This book was released on 2015 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive overview of the synthesis, characterisation, properties and applications of poly(lactic acid) science and technology covering scientific, ecological, social and economic issues.
Book Synopsis Handbook of Soil Analysis by : Marc Pansu
Download or read book Handbook of Soil Analysis written by Marc Pansu and published by Springer Science & Business Media. This book was released on 2007-04-18 with total page 996 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook is a reference guide for selecting and carrying out numerous methods of soil analysis. It is written in accordance with analytical standards and quality control approaches. It covers a large body of technical information including protocols, tables, formulae, spectrum models, chromatograms and additional analytical diagrams. The approaches are diverse, from the simplest tests to the most sophisticated determination methods.
Book Synopsis Cropping Systems, Land Tenure and Social Diversity in Wenchi, Ghana by : Samuel Adjei-Nsiah
Download or read book Cropping Systems, Land Tenure and Social Diversity in Wenchi, Ghana written by Samuel Adjei-Nsiah and published by . This book was released on 2006 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: However, there is still considerable scope for further development of these self-organised innovations.
Book Synopsis Advances in Uranium Ore Processing and Recovery from Non-conventional Resources by : International Atomic Energy Agency
Download or read book Advances in Uranium Ore Processing and Recovery from Non-conventional Resources written by International Atomic Energy Agency and published by Agency. This book was released on 1985 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Analysis written by J. Gautheyrou and published by CRC Press. This book was released on 2001-01-01 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this book is to provide a better understanding of tools for soil analysis in order to use them more efficiently. It covers sampling problems as well as difficulties relating to actual analysis and quality control.
Book Synopsis Processing of Particulate Solids by : J.P. Seville
Download or read book Processing of Particulate Solids written by J.P. Seville and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over half of the products of the chemical and process industries are sold in a particulate form. The range of such products is vast: from agrochemicals to pigments, from detergents to foods, from plastics to pharmaceuticals. However, surveys of the performance of processes designed to produce particulate products have consistently shown inadequate design and poor reliability. `Particle technology' is a new subject facing new challenges. Chemical and process engineering is becoming less concerned with the design of plants to produce generic simple chemicals (which are often single phase fluids) and is now more concerned with speciality `effect' chemicals which may often be in particulate form. Chemical and process engineers are also being recruited in increasing numbers into areas outside their tranditional fields, such as the food industry, pharmaceuticals and the manufacture of a wide variety of consumer products. This book has been written to meet their needs. It provides comprehensive coverage of the technology of particulate solids, in a form which is both accessible and concise enough to be useful to engineering and science students in the final year of an undergraduate degree, and at Master's level. Although it was written with students of chemical engineering in mind, it will also be of use and interest to students of other disciplines. It comprises an account of the fundamentals of teh subject, illustrated by worked examples, and followed by a wide range of selected applications.
Book Synopsis A Statistical Theory of the Strength of Materials by : Waloddi Weibull
Download or read book A Statistical Theory of the Strength of Materials written by Waloddi Weibull and published by . This book was released on 1939 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Food and Agriculture Organization of the United Nations Publisher :Food & Agriculture Org. ISBN 13 :9789251045411 Total Pages :20 pages Book Rating :4.0/5 (454 download)
Book Synopsis What is the Code of Conduct for Responsible Fisheries? by : Food and Agriculture Organization of the United Nations
Download or read book What is the Code of Conduct for Responsible Fisheries? written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2001 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: The actual Code of conduct is also available (1996) (ISBN 9251038341).
Book Synopsis Managing California's Snow Zone Lands for Water by : Henry Walter Anderson
Download or read book Managing California's Snow Zone Lands for Water written by Henry Walter Anderson and published by . This book was released on 1963 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Pharmaceutical Granulation Technology by : Dilip M. Parikh
Download or read book Handbook of Pharmaceutical Granulation Technology written by Dilip M. Parikh and published by CRC Press. This book was released on 2021-05-11 with total page 905 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theoretical discussions covering granulation and engineering perspectives. Covers new advances in expert systems, process modelling and bioavailability Chapters on emerging technologies in particle engineering Updated Current research and developments in granulation technologies
Book Synopsis Coral Reef Ascidians of New Caledonia by : Claude Monniot
Download or read book Coral Reef Ascidians of New Caledonia written by Claude Monniot and published by IRD Editions. This book was released on 1991 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Introduction to Differential Manifolds by : Jacques Lafontaine
Download or read book An Introduction to Differential Manifolds written by Jacques Lafontaine and published by Springer. This book was released on 2015-07-29 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an introduction to differential manifolds. It gives solid preliminaries for more advanced topics: Riemannian manifolds, differential topology, Lie theory. It presupposes little background: the reader is only expected to master basic differential calculus, and a little point-set topology. The book covers the main topics of differential geometry: manifolds, tangent space, vector fields, differential forms, Lie groups, and a few more sophisticated topics such as de Rham cohomology, degree theory and the Gauss-Bonnet theorem for surfaces. Its ambition is to give solid foundations. In particular, the introduction of “abstract” notions such as manifolds or differential forms is motivated via questions and examples from mathematics or theoretical physics. More than 150 exercises, some of them easy and classical, some others more sophisticated, will help the beginner as well as the more expert reader. Solutions are provided for most of them. The book should be of interest to various readers: undergraduate and graduate students for a first contact to differential manifolds, mathematicians from other fields and physicists who wish to acquire some feeling about this beautiful theory. The original French text Introduction aux variétés différentielles has been a best-seller in its category in France for many years. Jacques Lafontaine was successively assistant Professor at Paris Diderot University and Professor at the University of Montpellier, where he is presently emeritus. His main research interests are Riemannian and pseudo-Riemannian geometry, including some aspects of mathematical relativity. Besides his personal research articles, he was involved in several textbooks and research monographs.
Download or read book Aeronomy written by P. M. Banks and published by Elsevier. This book was released on 2013-09-24 with total page 445 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aeronomy, Part A is an attempt to make a comprehensive exposition of the processes in aeronomy, the study of composition, movement, and thermal balance of the upper regions of the planetary atmosphere. The text covers topics such as atmospheric regions and atmospheric density, the temperature and molecular mass of the atmosphere; the permanent constituents and the molecular and isotonic composition of the homosphere; and the transition from the homosphere to the heterosphere. Also covered are topics such as the temperature gradient and energies in the thermosphere, conditions at 200km and above 250km, solar radiation and ionization, and aeronomic reactions. The book is recommended for scientists, especially natural physicists, who would like to know more about the field of aeronomy and its advances.
Book Synopsis Adhesion Measurement Methods by : Robert Lacombe
Download or read book Adhesion Measurement Methods written by Robert Lacombe and published by CRC Press. This book was released on 2005-11-21 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: Adhesion Measurement Methods: Theory and Practice provides practical information on the most important measurement techniques, their unique advantages and disadvantages, and the selection of the proper method for a given application. It includes useful information and formulae on adhesion related matters such as driving force formulae for various m
