Synthesis & BIOCOMP Mtls CHEM BIO MOD Natural Polymers PDF Download

Author: Yukio Imanishi
Publisher: Springer
ISBN:
Category : Medical
Languages : en
Pages : 328

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Author: J. Comyn
Publisher: Springer Science & Business Media
ISBN: 9400948581
Category : Technology & Engineering
Languages : en
Pages : 387

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Book Description
Polymers are permeable, whilst ceramics, glasses and metals are gener ally impermeable. This may seem a disadvantage in that polymeric containers may allow loss or contamination of their contents and aggressive substances such as water will diffuse into polymeric struc tures such as adhesive joints or fibre-reinforced composites and cause weakening. However, in some cases permeability is an advantage, and one particular area where this is so is in the use of polymers in drug delivery systems. Also, without permeable polymers, we would not enjoy the wide range of dyed fabrics used in clothing and furnishing. The fundamental reason for the permeability of polymers is their relatively high level of molecular motion, a factor which also leads to their high levels of creep in comparison with ceramics, glasses and metals. The aim of this volume is to examine some timely applied aspects of polymer permeability. In the first chapter basic issues in the mathema tics of diffusion are introduced, and this is followed by two chapters where the fundamental aspects of diffusion in polymers are presented. The following chapters, then, each examine some area of applied science where permeability is a key issue. Each chapter is reasonably self-contained and intended to be informative without frequent outside reference. This inevitably leads to some repetition, but it is hoped that this is not excessive.

Author: Robert J. Pugh
Publisher: Cambridge University Press
ISBN: 1107090571
Category : Science
Languages : en
Pages : 447

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Combining academic and industrial viewpoints, this is the definitive stand-alone resource for researchers, students and industrialists. With the latest on foam research, test methods and real-world applications, it provides straightforward answers to why foaming occurs, how it can be avoided, and how different degrees of antifoaming can be achieved.

Author: Peter Grunwald
Publisher: MDPI
ISBN: 3038973181
Category : Science
Languages : en
Pages : 511

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This book is a printed edition of the Special Issue "Immobilized Biocatalysts" that was published in Catalysts

Author: Henk G. Merkus
Publisher: Springer
ISBN: 3319941747
Category : Technology & Engineering
Languages : en
Pages : 455

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Book Description
This edited volume brings together the expertise of numerous specialists on the topic of particles – their physical, chemical, pharmacological and toxicological characteristics – when they are a component of pharmaceutical products and formulations. The book discusses in detail properties such as the composition, size, shape, surface properties and porosity of particles with respect to how they impact the formulations and products in which they are used and the effective delivery of pharmaceutical active ingredients. It considers all dosage forms of pharmaceuticals involving particles, from powders to tablets, creams to ointments, and solutions to dry-powder inhalers, also including the latest nanomedicine products. Further, it discusses examples of particle toxicity, as well as the important subject of pharmaceutical industry regulations, guidelines and legislation. The book is of interest to researchers and practitioners who work on testing and developing pharmaceutical dosage and delivery systems.

Author: L.E. Scheving
Publisher: Springer Science & Business Media
ISBN: 9400935471
Category : Medical
Languages : en
Pages : 475

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High blood pressure (BP) (with fats and smoking) is one of the three roots of cardio-cerebro-renovascular disease affecting up to 25% of the adult population. Hence, high blood pressure should be recognized and treated, to reduce any complications and prolong life, as noted by Michael Weber of the Veterans Administration Hospital in Long Beach, California. He further emphasizes the need for monitoring before one starts the treatment of high blood pressure. Indeed, he refers to the results of the Australian study on mild hypertension with a large percentage of placebo responders and rightly suggests that many people are treated who should not be because of 'white-coat-associated high blood pressure'. He also points to the lack of standardization of techniques for data analysis and of methods of BP measurement. Ambulatory monitoring under usual condi tions without concomitant recording of events does not allow even a qualitative assessment of the impact of varying stimuli, in weber's opinion.

Author: Vivek Kumar
Publisher: Springer
ISBN: 9811318409
Category : Medical
Languages : en
Pages : 664

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The book discusses ways to overcome the side effects of using hydrocarbon-based products as energy sources. Hydrocarbons produce raw crude oil waste of around 600,000 metric tons per annum, with a range of uncertainty of 200,000 metric tons per year. The various chapters in this book focus on approaches to reduce these wastes through the application of potential microbes, in a process called bioremediation. The book is a one-stop reference resource on the methods, mechanisms and application of the bio-composites, in the laboratory and field. Focusing on resolving a very pressing environmental issue, it not only provides details of existing challenges, but also offers deeper insights into the possibility of solving problems using hydrocarbon bioremediation.

Author: Jeffrey R. Morgan
Publisher: Springer Science & Business Media
ISBN: 0896035166
Category : Technology & Engineering
Languages : en
Pages : 1215

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Book Description
In recent years, the field of tissue engineering has begun, in part, to c- lesce around the important clinical goal of developing substitutes or repla- ments for defective tissues or organs. These efforts are focused on many tissues including skin, cartilage, liver, pancreas, bone, blood, muscle, the vascu- ture, and nerves. There is a staggering medical need for new and effective treatments for acquired as well as inherited defects of organs/tissues. Tissue engineering is at the interface of the life sciences, engineering, and clinical medicine and so draws upon advances in cell and molecular biology, mate- als sciences, and surgery, as well as chemical and mechanical engineering. Such an interdisciplinary field requires a broad knowledge base as well as the use of a wide assortment of methods and approaches. It is hoped that by bringing together these protocols, this book will help to form connections - tween the different disciplines and further stimulate the synergism underlying the foundation of the tissue engineering field.

Author:
Publisher:
ISBN: 9788461698424
Category :
Languages : en
Pages : 912

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Author: David L. Bish
Publisher: Walter de Gruyter GmbH & Co KG
ISBN: 150150911X
Category : Science
Languages : en
Pages : 668

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Volume 45 of Reviews in Mineralogy and Geochemistry is a new and expanded update of Volume 4 from 1977. Most of the material in this volume is entirely new, and Natural Zeolites: Occurrence, Properties, Applications presents a fresh and expanded look at many of the subjects contained in Volume 4. There has been an explosion in our knowledge of the crystal chemistry and structures of natural zeolites (Chapters 1 and 2), due in part to the now-common Rietveld method that allows treatment of powder diffraction data. Studies on the geochemistry of natural zeolites have also greatly increased, partly as a result of the interests related to the disposal of radioactive wastes, and Chapters 3, 4, 5, 13, and 14 detail the latest results in this important area. Until the latter part of the 20th century, zeolites were often looked upon as a geological curiosity, but they are now known to be widespread throughout the world in sedimentary and igneous deposits and in soils (Chapters 6-12). The application of natural zeolites has greatly expanded since the first zeolite volume. Chapter 15 details the use of natural zeolites for removal of ammonium ions, heavy metals, radioactive cations, and organic molecules from natural waters, wastewaters, and soils. Similarly, Chapter 16 describes the use of natural zeolites as building blocks and cements in the building industry, Chapter 17 outlines their use in solar energy storage, heating, and cooling applications, and Chapter 18 describes their use in a variety of agricultural applications, including as soil conditioners, slow-release fertilizers, soil-less substrates, carriers for insecticides and pesticides, and remediation agents in contaminated soils.