Contribution à l'étude de la régénération des membranes (étape de rinçage) PDF Download
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Author: Rachid Kerbage
Publisher:
ISBN:
Category :
Languages : fr
Pages : 185
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LE COLMATAGE DES MEMBRANES EST UN PHENOMENE INEVITABLE. UN NETTOYAGE CHIMIQUE PERIODIQUE EST NECESSAIRE POUR QUE LES MEMBRANES RETROUVENT LEURS CARACTERISTIQUES INITIALES ET LEUR PERFORMANCE. L'ETUDE PORTERA SUR LE RINCAGE (PRERINCAGE) DES MEMBRANES QUI CONSTITUE UNE ETAPE IMPORTANTE DANS UN CYCLE DE NETTOYAGE. IL PERMET, EN PARTICULIER, L'ELIMINATION DE LA PARTIE SUPERFICIELLE ET FAIBLEMENT LIEE DU DEPOT DE SURFACE. POUR REALISER CETTE ETUDE LES MEMBRANES (ORGANIQUES ET MINERALES) ONT ETE COLMATEES DANS DES CONDITIONS STANDARDISEES. LES PRODUITS COLMATANTS ETANT SOIT LA PECTINE, SOIT UNE PROTEINE (ALBUMINE D'UF): CES PRODUITS ONT ETE CHOISIS PARCE QU'ILS JOUENT UN ROLE TRES IMPORTANT DANS LE COLMATAGE DES MEMBRANES LORS DE LA FILTRATION DE LIQUIDE ALIMENTAIRE. L'EFFICACITE DE RINCAGE A ETE CARACTERISEE D'UNE PART PAR UNE EVALUATION DE LA MATIERE COLMATANTE ELIMINEE ET, D'AUTRE PART, PAR UNE ETUDE DE LA RECUPERATION DE LA PERMEABILITE DES MEMBRANES. AINSI, L'INFLUENCE DE PLUSIEURS PARAMETRES OPERATOIRES SUR L'EFFICACITE DU RINCAGE DES MEMBRANES A PU ETRE QUANTIFIEE: ON OBSERVE AINSI QUE L'ACTION DU RINCAGE SUR LA RECUPERATION DE LA PERMEABILITE DES MEMBRANES RESTE FAIBLE. ENFIN, LA METHODE DE PERMPOROMETRIE GAZ-LIQUIDE A ETE ADAPTEE ET UTILISEE COMME MOYEN DE CONTROLE ET D'EVALUATION DE L'EFFICACITE DU NETTOYAGE DES MEMBRANES. CETTE METHODE, EN DONNANT LA DISTRIBUTION DE PORES ACTIFS ET DE PERMEABILITE DES MEMBRANES, PERMET DE DISTINGUER LES ETAPES IMPORTANTES DANS UN CYCLE DE NETTOYAGE ET DE VISUALISER L'ACTION DES AGENTS DE NETTOYAGE TANT A LA SURFACE QU'A L'INTERIEUR DES PORES
Author: Rachid Kerbage
Publisher:
ISBN:
Category :
Languages : fr
Pages : 185
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Book Description
LE COLMATAGE DES MEMBRANES EST UN PHENOMENE INEVITABLE. UN NETTOYAGE CHIMIQUE PERIODIQUE EST NECESSAIRE POUR QUE LES MEMBRANES RETROUVENT LEURS CARACTERISTIQUES INITIALES ET LEUR PERFORMANCE. L'ETUDE PORTERA SUR LE RINCAGE (PRERINCAGE) DES MEMBRANES QUI CONSTITUE UNE ETAPE IMPORTANTE DANS UN CYCLE DE NETTOYAGE. IL PERMET, EN PARTICULIER, L'ELIMINATION DE LA PARTIE SUPERFICIELLE ET FAIBLEMENT LIEE DU DEPOT DE SURFACE. POUR REALISER CETTE ETUDE LES MEMBRANES (ORGANIQUES ET MINERALES) ONT ETE COLMATEES DANS DES CONDITIONS STANDARDISEES. LES PRODUITS COLMATANTS ETANT SOIT LA PECTINE, SOIT UNE PROTEINE (ALBUMINE D'UF): CES PRODUITS ONT ETE CHOISIS PARCE QU'ILS JOUENT UN ROLE TRES IMPORTANT DANS LE COLMATAGE DES MEMBRANES LORS DE LA FILTRATION DE LIQUIDE ALIMENTAIRE. L'EFFICACITE DE RINCAGE A ETE CARACTERISEE D'UNE PART PAR UNE EVALUATION DE LA MATIERE COLMATANTE ELIMINEE ET, D'AUTRE PART, PAR UNE ETUDE DE LA RECUPERATION DE LA PERMEABILITE DES MEMBRANES. AINSI, L'INFLUENCE DE PLUSIEURS PARAMETRES OPERATOIRES SUR L'EFFICACITE DU RINCAGE DES MEMBRANES A PU ETRE QUANTIFIEE: ON OBSERVE AINSI QUE L'ACTION DU RINCAGE SUR LA RECUPERATION DE LA PERMEABILITE DES MEMBRANES RESTE FAIBLE. ENFIN, LA METHODE DE PERMPOROMETRIE GAZ-LIQUIDE A ETE ADAPTEE ET UTILISEE COMME MOYEN DE CONTROLE ET D'EVALUATION DE L'EFFICACITE DU NETTOYAGE DES MEMBRANES. CETTE METHODE, EN DONNANT LA DISTRIBUTION DE PORES ACTIFS ET DE PERMEABILITE DES MEMBRANES, PERMET DE DISTINGUER LES ETAPES IMPORTANTES DANS UN CYCLE DE NETTOYAGE ET DE VISUALISER L'ACTION DES AGENTS DE NETTOYAGE TANT A LA SURFACE QU'A L'INTERIEUR DES PORES
Author: Françoise BENAS
Publisher:
ISBN:
Category :
Languages : fr
Pages : 270
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Author: N. F. Mazel (Mlle.)
Publisher:
ISBN:
Category :
Languages : fr
Pages :
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Author: Nabil Mameri
Publisher:
ISBN:
Category :
Languages : fr
Pages : 266
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Book Description
ETUDE DU TRANSFERT DE MATIERE A TRAVERS LA MEMBRANE OU DE LA COUCHE DE POLARISATION DE CONCENTRATION. EN CE QUI CONCERNE LES MEMBRANES DES BARRIERES MINERALES A BASE D'OXYDES D'ALUMINIUM SE COMPORTE COMME DES TENSIONS VIS-A-VIS DE POLYSTYRENES EN SOLUTION DANS LE CYCLO-HEXANE. LA PERMEABILITE DES MEMBRANES SYMETRIQUES DEPEND DU RAYON DES PORES. ON ETUDIE ENSUITE LA THEORIE DE L'ULTRAFILTRATION EN CELLULE NON AGITEE A TAUX DE REJET EGAL A UN. LES RESULTATS DIFFERENT SELON QUE L'ON A A FAIRE A DES MOLECULES NEUTRES OU DES PROTEINES. DANS UNE TROISIEME PARTIE ON ETUDIE L'AMELIORATION DU TRANSFERT DE MATIERE PAR PROMOTION DE TURBULENCE
Author: United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR)
Publisher: United Nations
ISBN: 9210600029
Category : Political Science
Languages : en
Pages : 512
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Book Description
This report assesses the levels and effects of exposure to ionizing radiation. Scientific findings underpin radiation risk evaluation and international protection standards. This report comprises a report with two underpinning scientific annexes. The first annex recapitulates and clarifies the philosophy of science as well as the scientific knowledge for attributing observed health effects in individuals and populations to radiation exposure, and distinguishes between that and inferring risk to individuals and populations from an exposure. The second annex reviews the latest thinking and approaches to quantifying the uncertainties in assessments of risk from radiation exposure, and illustrates these approaches with application to examples that are highly pertinent to radiation protection.
Author: Andrew B. Peitzman
Publisher: Lippincott Williams & Wilkins
ISBN: 9780781762755
Category : Medical
Languages : en
Pages : 828
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Book Description
The thoroughly updated Third Edition of this popular and widely used pocket reference guides the trauma team through every aspect of patient care after injury and before, during, and after acute care surgery—from prehospital care, to resuscitation, treatment of specific organ injuries, priorities in intensive care, and management of special situations. Designed for rapid, on-the-spot information retrieval, this manual will be a staple reference in emergency departments and trauma centers. Flow charts, algorithms, sequential lists, and tables throughout facilitate quick clinical decision-making. More than 200 illustrations demonstrate specific injuries and procedures. Appendices include organ injury scales, tetanus prophylaxis recommendations, and frequently used forms.
Author: Bryan Corrin
Publisher: Elsevier Health Sciences
ISBN: 0702046221
Category : Medical
Languages : en
Pages : 785
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Book Description
With an emphasis on practical diagnostic problem solving, Pathology of the Lungs, 3rd Edition provides the pulmonary pathologist and the general surgical pathologist with an accessible, comprehensive guide to the recognition and interpretation of common and rare neoplastic and non-neoplastic lung conditions. The text is written by two authors and covers all topics in a consistent manner without the redundancies or lapses that are common in multi-authored texts. The text is lavishly illustrated with the highest quality illustrations which accurately depict the histologic, immunohistochemical and cytologic findings under consideration and it is supplemented throughout with practical tips and advice from two internationally respected experts. The user-friendly design and format allows rapid access to essential information and the incorporation throughout of relevant clinical and radiographic information makes it a complete diagnostic resource inside the reporting room. Approximately 1,000 high quality full color illustrations.Provides the user with a complete visual guide to each specimen and assists in the recognition and diagnosis of any slide looked at under the microscope. Comprehensive coverage of both common and rare lung diseases and disorders. One stop consultation resource for the reporting room or study, no need to go further to get questions answered. Clinical background and ancillary radiographs incorporated throughout.Provides the user with all of the necessary diagnostic tools to make a complete and accurate pathologic report. Practical advice and tips from two of the world’s recognized experts. Provides the trainee and general surgical pathologist with time saving diagnostic clues when dealing with difficult specimens. Consistent and uniform approach incorporated for each disease and disorder (Etiology, pathogenesis, clinical features, pathologic features, differential diagnosis) User-friendly format enables quick and easy navigation to the key information required. Extensive use of summary tables, charts and graphs throughout the text. Helps simplify and clarify complex concepts and facilitates “at a glance comparisons between entities. Extensive reference list highlights landmark articles as well as including most up-to-date citations. Directs the trainee and practitioner to the most recent and authoritative sources for further reading and investigation
Author: Christopher C. Chang
Publisher: Springer
ISBN: 1493902652
Category : Medical
Languages : en
Pages : 600
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Book Description
Diseases of the Sinuses: A Comprehensive Textbook of Diagnosis and Treatment, 2nd Edition, offers the definitive source of information about the basic science of the sinuses and the clinical approach to sinusitis. Since the widely praised publication of the first edition, understanding of sinus disease has changed dramatically, mainly as a result of recent developments and new discoveries in the field of immunology. This updated and expanded edition is divided into sections addressing, separately, the pathogenesis, clinical presentation, medical and surgical management of acute and chronic rhinosinusitis. Special entities such as autoimmune-related sinusitis, allergy and sinusitis, and aspirin-exacerbated respiratory disease are discussed in separate chapters. The role of immunodeficiency is also addressed. The management section has been fully updated to incorporate new medical modalities and surgical procedures. Developed by a distinguished group of international experts who share their expertise and insights from years of collective experience in treating sinus diseases, the book will appeal to anyone who has an interest in sinus disease, including both physicians and allied health professionals. Internists, pediatricians, allergists, otolaryngologists and infectious disease specialists will find the book to be an invaluable, comprehensive reference. Physician assistants and nurse practitioners who work with specialists who treat sinus disease will also benefit from the book.
Author: S. Roussos
Publisher: Springer Science & Business Media
ISBN: 9401706611
Category : Technology & Engineering
Languages : en
Pages : 641
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Book Description
G.HAINNAUX Departement Milieu et Activites Agricoles, Centre ORSTOM, 911 Avenue d' Agropolis, B.P. 5045, 34032 Montpellier Cedex , France. Solid state fermentation, popularly abbreviated as SSF, is currently investigated by many groups throughout the world. The study of this technique was largely neglected in the past in European and Western countries and there is now a high demand for SSF, meaning in food, environment, agricultural, phannaceutical and many other biotechnological applications. It gives me satisfaction to note that the importance of this technique was realised at my department way back in 1975 since then, our team has put concentrated efforts on developing this technique. xvii Foreword Advances in Solid State Fermentation Foreword M. PUYGRENIER Agropolis Valorisation, Avenue d' Agropolis, 34394 Montpellier Cedex 5, France. On the name of the Scientific Community, I would like to express the wish that this International Symposium on SSF should be successful. Solid State Fermentation is part of biotechnology research. It consists on seeding solid culture medium with bacteria or fungi (filamentous or higher) and on producing, in this medium (solid components and exudates) metabolites and high value products. In fact, this process is very old. In older industries such the food and agricultural, this technique has been extensively used. An example of this is the production of pork sausages and Roquefort cheese. Pharmaceutical industry could make extensive use of SSF in the production of secondary metabolites of many kinds and development in this direction is soon expected.
Author: Ursula Zinko
Publisher:
ISBN:
Category : Alternative toxicity testing
Languages : en
Pages : 244
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Book Description
