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پزشکی، دندانپزشکی و داروسازی
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محصولات
Natural Polymers: Industry Techniques and Applications - Original PDF
نویسندگان: خلاصه: This book introduces the most recent innovations in natural polymer applications in the food, construction, electronics, biomedical, pharmaceutical, and engineering industries. The authors provide perspectives from their respective range of industries covering classification, extraction, modification, and application of natural polymers from various sources in nature. They discuss the techniques used in analysis of natural polymers in various systems incorporating natural polymers as well as their intrinsic properties.
Polymer coatings : a guide to chemistry, characterization, and selected applications - Original PDF
نویسندگان: خلاصه: Materials always have been of crucial importance for society. The wide range of the presently existent materials provides a large variety of properties that have been put to full use for many applications. However, applications often require a combination of properties or, actually, different properties at different locations and times, dependent on the circumstances at hand. Hence, combinations of materials are important and, since properties at surfaces are usually required to be different from those in bulk, coatings have become an important branch of materials science.
Functional Polymer Coatings: Principles, Methods, and Applications - Original PDF
نویسندگان: خلاصه: Focusing on a variety of coatings, this book provides detailed discussion on preparation, novel techniques, recent developments, and design theories to present the advantages of each function and provide the tools for better product performance and properties. • Presents advantages and benefits of properties and applications of the novel coating types • Includes chapters on specific and novel coatings, like nanocomposite, surface wettability tunable, stimuli-responsive, anti-fouling, antibacterial, self-healing, and structural coloring • Provides detailed discussion on recent developments in the field as well as current and future perspectives • Acts as a guide for polymer and materials researchers in optimizing polymer coating properties and increasing product performance
Natural polymers for drug delivery - Original PDF
نویسندگان: خلاصه: Natural polymers have been utilized extensively in food, pharmaceuticals, cosmetics, textiles, oil drilling and paint industries. Their non-toxic and inexpensive attributes readily enhance their commercial acceptability and make them potent agents in lieu of synthetic polymers. This book explores the opportunistic utility of natural polymers in developing effective drug delivery systems and provides a comprehensive and up-to-date analysis of their source, chemical structure and mechanism of action. Covering novel polymers for drug delivery--in particular extracts from plants, microorganisms and proteins, as well as water soluble and water insoluble biodegradable polymers--it presents an encyclopedic overview of natural polymers: * quintessential roles in binding drugs towards enhancing bio-availability * modification and derivatization for targeted delivery * role as active drugs Natural Polymers for Drug Delivery is an invaluable resource for researchers, students and industrial scientists in the fields of biochemistry, chemistry, pharmacology and food science
Natural Polymer Drug Delivery Systems: Nanoparticles, Plants, and Algae - Original PDF
نویسندگان: خلاصه: Drug delivery is attractive approach for medicine fi eld, as more potent and specifi c drugs are being developed. With the integration of nanotechnology, socalled smart drug-delivery systems integrate biosensing functionalities which sustain independently in vivo reaction control that resulting in part unique features of the term Nanomedicine. Nanotechnology is one of the very frontiers of science today. Current polymeric research is dominantly participating in the advancement of nanotechnology by offering the controlled release of therapeutic agents in constant doses over prolong periods, cyclic dosage, and tunable release of both hydrophilic and hydrophobic drugs. Many biomaterials can be used to this end, offering extensive chemical diversity and the potential for further modifi cation using nanoparticles. Conventional methods of drug delivery present several disadvantages, mainly due to off-target effects that may originate severe side and toxic effect to healthy tissues. New drug delivery systems based on nanoscale devices showing new and improved properties and developed as promising solutions for achieving desirable therapeutic effi cacy. Here, we provide a broad overview of novel nanoparticle based drug delivery systems, covering its innovations, applications and commercialization systems using both natural and synthetic polymers.
Fundamentals of Plastics Thermoforming - Original PDF
نویسندگان: خلاصه: The process of heating and reshaping plastics sheet and film materials has been in use since the beginning of the plastics industry. This process is known as thermoforming. Today this process is used for industrial products including signage, housings, and hot tubs. It also produces much of the packaging in use today including blister packs, egg cartons, and food storage containers. This process has many advantages over other methods of producing these products, but it has some limitations. This book has a twofold purpose. It is designed to be used as a text book for a course on thermoforming. It is also intended to be an application guide for professionals in the field of thermoforming including manufacturing, process and quality engineers, and managers. This book is focused on process application rather than theory. It refers to real products and processes with the intent of understanding the real issues faced in this industry. In addition to materials and processes, part and tool design are covered. Quality control is critical to any operation and this is also covered in this text. Two areas of focus in today's industry include Lean operations and environmental issues. Both of these topics are also included. Table of Contents: Introduction / Plastics Materials / Thermoforming Process Overview / The Forming Process / Part Design Mold / Tool Design / Quality Control Issues / Lean Operations / Environmental Issues
Rheology and Processing of Polymeric Materials: Polymer Rheology - Original PDF
نویسندگان: خلاصه: Volume 1 presents first fundamental principles of the rheology of polymeric fluid including kinematics and stresses of a deformable body, the continuum theory for the viscoelasticity of flexible homogeneous polymeric liquids, the molecular theory for the viscoelasticity of flexible homogeneous polymeric liquids, and the experimental methods for the measurement of the rheological properties of poylmeric liquids. The materials presented are intended to set a stage for the subsequent chapters by introducing the basic concepts and principles of rheology, from both phenomenological and molecular perspectives, ofstructurally simple flexible and homogeneous polymeric liquids. Next, this volume presents the rheological behavior of structurally complex polymeric materials including miscible polymer blends, block copolymers, liquid-crystalline polymers, thermoplastic polyurethanes, immiscible polymer blends, perticulare-filled polymers, organoclay nanocomposites, molten polymers with dissolved gas, and thermosts.
Update on Troubleshooting in Thermoforming - Original PDF
نویسندگان: خلاصه: Thermoforming is a technique whereby a flat sheet of plastic is changed into a three-dimensional object with the use of heat. However, there are a lot of problems that can occur during this process and this book will provide thermoformers and part designers with an insight into the problems that can occur during the production of a product explain why problems happen and how to prevent them. Problems can be classified as uneven shapes, blisters or bubbles, poor detail, incomplete forming, sagging (excessive sheet sag, uneven sag), webbing, stretch marks, poor wall distribution, tearing the plastic sheet when forming, part sticking to the mould, part warpage, surface marking, uneven edges, raised corners, and cracking in corners. Also discussed are the different types of surface defects, their identification in plastic parts and the ways to solve the problem. All these problems and their remedies are covered in detail in this book. This book will be of use to those producing thermoformed items whether they are experienced thermoformers or new to the technique, and to designers, designing items which will be produced by thermoforming.
Polymer Processing: Principles and Design - Original PDF
نویسندگان: خلاصه: Fundamental concepts coupled with practical, step-by-step guidance With its emphasis on core principles, this text equips readers with the skills and knowledge to design the many processes needed to safely and successfully manufacture thermoplastic parts. The first half of the text sets forth the general theory and concepts underlying polymer processing, such as the viscoelastic response of polymeric fluids and diffusion and mass transfer. Next, the text explores specific practical aspects of polymer processing, including mixing, extrusion dies, and post-die processing. By addressing a broad range of design issues and methods, the authors demonstrate how to solve most common processing problems.
Fire Properties of Polymer Composite Materials - Original PDF
نویسندگان: خلاصه: This book is the first to deal comprehensively with the important topic of the fire behaviour of polymer composite materials. Composites are used in a diverse range of applications, including land and marine transport, aerospace, the chemical industry, and most branches of civil engineering infrastructure. It is our belief that fire behaviour is the single most important factor limiting the wider use of composites in many of these areas. Our aim in producing this volume is therefore to stimulate the work that is needed to overcome this fundamental problem. The first step in such a journey is, of course, to summarise what is presently known, which is what we have attempted here. This book aims to be an authoritative reference source. The book covers all of the key issues on the behaviour of polymer composites in fire. This includes a description of the thermal degradation and combustion mechanisms of composites, including the thermal decomposition reactions, reaction rates, flammable volatiles and toxic gases of organic polymers and fibres. The fire reaction properties that define the flammability and fire hazard of polymer composites are described, including time-to-ignition, heat release rate, flame spread, smoke and gaseous combustion products. The fire resistive properties of composites are also described, including the key properties of burn-through rate and mechanical integrity during and after fire.آیا کتاب مورد نظر هنوز بر روی سایت قرار نگرفته است؟ جای نگرانی نیست! کافی است بر روی گزینه سفارش کتاب کلیک کرده و درخواست خود را ثبت کنید. در کمتر از چند ساعت کتاب شما را آماده خواهیم کرد.