eBooks de Divulgación científica, página 10 de 122

Bio-based polymers are materials that are produced from renewable resources. Their biodegradable properties are the driver of worldwide interest among researchers and manufacturers in recent years due to the demand and need for alternatives to fossil fuel based polymers. The use of biodegradable polymers creates a sustainable industry. In contrast, the raw materials for synthetic polymers derived from petrochemicals will eventually deplete and most of them are non-biodegradable. Despite these advantages, bio-based polymers account for only a tiny fraction of the total global plastic market. Non-biodegradability issues of synthetic pharmaceutical inactive ingredients strongly emphasized innovators towards the development of biopolymers. Recently natural biodegradable excipients gained significant attention due to their sustainability and engineered applications. Innovative technologies to transform these materials into value-added chemicals via novel graft-polymerization or co-processing techniques for the production of high-performance multifunctional and low-cost polymers with tunable structures are key parts of its sustainable development. Biopolymers Towards Green and Sustainable Development elaborates on important issues that surround bio-based polymers. It gives the reader an overview of biopolymers, the impact of non-biodegradable polymers on the environment and health, emerging sources of biodegradable polymers, structural and morphological characterization techniques, thermomechanical properties, biodegradable plastics from biopolymers, pharmaceutical, biomedical, and textile applications, and pharmacokinetics and pharmacodynamics. Moreover, a brief bibliometric meta-analysis on bio-based pharmaceutical excipients provides an update about teams involved in the development of polymeric research that may be of interest to anyone who wants to work on sustainable biopolymer projects. Key Features - provides an updated summary on recently discovered natural polymeric materials- gives a thorough breakdown of the vast range of biopolymer applications including fabrication of conventional and novel drug delivery, polymeric scaffolds, composites, microneedles, and green synthesis of metallic nanoparticles,- summarizes pharmacology and pharmacokinetics of the inactive pharmaceutical ingredient and excipients- presents a bibliometric meta-analysis indicating potential collaboration between country, organization, institution, and authors with a view on recent ongoing trends in tyhe biopolymer landscape.

This book highlights the advancements in the manufacture and testing of functional composites, metal matrix composites and polymer matrix composites. Chapters provide information about machinability studies of metals and composites using a variety of analytical techniques. The 12 book chapters also highlight updates in manufacturing technologies like CNC turning processes, electrical discharge machining, end milling, abrasive jet machining, electro chemical machining, additive manufacturing, and resistance spot welding. Readers will learn how to solve applied problems in industrial processing and applications. The book is of significant interest to industrialists working on the basic and experimental parameters for fabricating functional composites and manufacturing technology. Because of the multidisciplinary nature of the presented topics, the information presented in the book is of value to a broad audience involved in research, including materials scientists, chemists, physicists, manufacturing and chemical engineers and processing specialists who are involved and interested in the frontiers of composite materials.

An Introduction to Plant Immunity is a comprehensive guide to plant immunology and stress response. The book covers the topic in 21 detailed chapters, starting from an introduction to the subject to the latest knowledge about plant disease resistance. The topics covered in the book include plant pathogens, plant diseases, plant immunity, passive defense mechanisms, acquired resistance, molecular genetics of plant immunology, protein function and genetic engineering. Each chapter provides a reader-friendly introduction along with clear sections detailing each topic. Additionally, detailed references for further reading are also provided. The combination of basic and advanced information on plant immunity make this book an essential textbook for students in botany and plant biology courses. Researchers interested in plant genomics and the effects of environmental and microbial interactions on plants will also benefit from this informative reference.

Influenza is one of the most ancient and intriguing diseases that has been accompanying our civilization for millennia. While mankind has successfully defeated many dangerous influenza infections in the last couple of centuries, influenza control remains a serious problem for public health. A number of influenza vaccines and antiviral compounds have been licensed in recent times. However, the influenza virus is still ahead of us, as it continues to persistently infect humans to this day. Influenza: A Century of Research shows how influenza virology has developed historically and the tremendous knowledge that has been uncovered in the study of influenza. In this monograph, the authors present a historical perspective on influenza, chronologically, with an emphasis on its virology. Chapters cover information about the isolation of the first influenza viruses, substrates, and models for studying influenza, structure, and life cycle of the influenza virus, mechanisms of attenuation and virulence. Chapters progress into the multidisciplinary aspects of influenza research such as influenza virus ecology and the evolutionary origin of epidemic and pandemic influenza viruses. A significant part of the book also covers the description of the prevention and treatment of influenza and reasons that have contributed to insufficient control for influenza. The questions of how the COVID-19 pandemic affects the circulation of seasonal respiratory viruses, and if we can eliminate this virus are also addressed. Influenza: A Century of Research is an informative source of information for a broad range of readers, academic or otherwise, who are interested in knowing more about the disease.

This handbook is a guide to numerical and experimental processes that are used to analyze and improve the efficiency of vertical axis rotors. Chapters present information that is required to optimize the geometrical parameters of rotors or understand how to augment upstream water velocity. The authors of this volume present a numerical model to characterize the water flow around the vertical axis rotors using commercial CFD code in Ansys Fluent. The software has been used to select adequate parameters and perform computational simulations of spiral Darrieus turbines. The contents of the volume explain the experimental procedure carried out to evaluate the performance of the spiral Darrieus turbine, how to characterize the water flow in the vicinity of the tested turbine and the method to assess the spiral angle influence on the turbine performance parameters. Results for different spiral angles (ranging from 10 to 40) are presented. This volume is a useful handbook for engineers involved in power plant design and renewable energy sectors who are studying the computational fluid dynamics of vertical axis turbines (such as Darrieus turbines) that are used in hydropower projects. Key features: - 4 chapters that cover the numerical and experimental analysis of vertical axis rotors and hydrokinetic turbines - Simple structured layout for easy reading (methodology, models and results) - Bibliographic study to introduce the reader to the subject - A wide range of parameters included in experiments - A comprehensive appendix of tables for mechanical parameters, statistical models, rotor parameters and geometric details.

This book focuses on cases and studies of interest to mechanical engineers and industrial technicians. The considered applications in this volume are widely used in several industrial fields particularly in the automotive and aviation industries. Readers will understand the theory and techniques which are used in each application covered in each chapter. The book contents include the following topics: Numerical analysis of hydrokinetic turbines Computational fluid dynamics of a CuO based nanofluid in mini-channel cross-sections Orthodontic biomechanics of a NiTi arch wires Reynolds number effects on fluid flow through Savonius rotors Effect of operating parameters on Zn-Mn alloys deposited from additive-free chloride bath Optical properties and stability of a blue-emitting phosphor (Sr2P2O7:Eu2+) Under UV and VUV excitation Numerical study of the influence of nanofluid type on thermal improvement in a three dimensional mini channel Electrochemical studies and characterization of Zn-Mn coatings deposited in the presence of novel organic additives Prediction of fire and smoke propagation under a range of external conditions Structural design of a 10 kW H-Darrieus wind turbine The presented case studies and development approaches aim to provide the readers, such as graduate students, PhD candidates and professionals with basic and applied information broadly related to mechanical engineering and technology.

Frontiers in Stem Cell and Regenerative Medicine Research Volume 10[Edited for Volume 10]Stem cell and regenerative medicine research is an important area of clinical research which promises to change the face of medicine as it will be practiced in the years to come. Challenges in the 21st century to combat diseases such as cancer, Alzheimers disease and retinal disorders, among others, may well be addressed employing stem cell therapies and tissue regeneration techniques. Frontiers in Stem Cell and Regenerative Medicine Research brings updates on multidisciplinary topics relevant to stem cell research and their application in regenerative medicine. The series is essential reading for researchers seeking updates in stem cell therapeutics and regenerative medicine. Volume 10 includes 5 chapters on these topics: -Novel drugs and their stem cell-based targets for osteoporosis: challenges and proceedings-The role of cancer stem cells in disease progression and therapy resistance-Stem cells from human exfoliated deciduous teeth in tissue regeneration-The fate of toxicological studies: from animal models to stem cell-based methods-Effect of material properties on differentiation of mesenchymal stem cells

Soft robotics is a subfield of robotics that encompasses the design and fabrication of robots with soft and compliant materials. Soft robots represent components like human prosthetics or biomimicking systems. Soft robotics relies on technically astute designs based on the correct choice of materials to enable a level of dexterity not possible with rigid components alone. The basic prime movers (actuators) and perception (sensors) require control systems capable of accommodating imprecise feedback data and often unpredictable reaction times. Mobility in such robots is more akin to entomological or marine systems than conventional guided vehicles. This reference is a guide to materials and systems used in soft robotics. If features 6 chapters contributed by robotics experts that review fundamental and applied topics that are important for understanding the requirements of soft robotics design projects and the physics of the polymers involved. Chapters are organized for easy reading and include references. The topics include: - Aspects of materials processing and engineering for the development of soft robotic devices - A review on biological gripping principles and their application to robotics - Information about self-sensing electroadhesive polymer grippers with magnetically controllable surface geometry - Theoretical and experimental investigations of magnetic hybrid materials - Modeling and dynamic analysis of a novel rotary soft robotic arm by transfer matrix method - Design and control of a portable continuum robot for pipe inspection assisted by a rigid manipulator This book is a suitable reference for scholars and engineers who are seeking knowledge about materials and design principles in soft robotics with its practical applications.

Advances in Organic Synthesis is a book series devoted to the latest advances in synthetic approaches towards challenging structures. The series presents comprehensive reviews written by eminent authorities on different synthetic approaches to selected target molecules and new methods developed to achieve specific synthetic transformations or optimal product yields. Advances in Organic Synthesis is essential for all organic chemists in academia and the industry who wish to keep abreast of rapid and important developments in the field. Contents of this volume include these 7 reviews: - Recent advances in copper-catalyzed heterocyclic syntheses- Application of modern green chemistry methods in the synthesis of quinolines, quinazolines and quinazolinones- Electroluminescence polymers-a review on synthesis by organic compounds- Multicomponent approach for the synthesis of xanthenes- From atoms to macromolecules: 100 years of polymer research- An overview of oxidizing and reducing agents in total synthesis- Amino acid-derived ionic liquids: novel biodegradable catalytic systems for green synthesis of heterocycles

Biochemistry a practical manual has been designed to meet the laboratory syllabus of students pursuing Biochemistry courses at undergraduate levels of various Universities. Features: Preparation of Standard Buffers and pH Chemistry of Carbohydrates, Chemistry of Lipids Identification of Amino Acids Analysis of Drugs, Clinical Biochemistry, Enzymes Analysis of Milk and Food Stuffs Abnormal Constituents of UrineContents 1. Preparation of Standard Buffers and pH 2. Chemistry of Carbohydrates 3. Chemistry of Lipids 4. Identification of Amino acids 5. Analysis of Drugs 6. Clinical Bio-Chemistry 7. Enzymes 8. Analysis of Milk and Food stuffs 9. Abnormal Constituents of UrineAbout the Author N. Sarath Chandra Bose did MSc in Biochemistry and MPhil from Acharya Nagarjuna University, Guntur and has submitted thesis for PhD in the same University. He has 8 years of teaching experience and presently he is a guest faculty in the Department of Biochemistry, Acharya Nagarjuna University. He has presented number of papers in International and National Seminars.

A coletânea Discussões Interdisciplinares: debates e discussões entre ciências exatas e naturais – Volume 10 reúne um conjunto instigante de estudos que atravessam áreas como física, saúde, meio ambi

This book includes interactive and intentionally designed illustrations that create a framework for association while supporting and promoting the Bahamas.With the use of cartoons and "Concepts Contexts" that are fillable sections of text (that have an answer key at the bottom of the page), we create a guide to understanding and learning high school chemistry in an easily digestible format.The information contained within the book is the exclusive work product of David Ferguson and is not to be reproduced, copied or distributed without the expressed written consent of David Ferguson.

Molecular and Physiological Insights into Plant Stress Tolerance and Applications in Agriculture is an edited volume that presents research on plant stress responses at both molecular and physiological levels. Key Features: - Emphasizes the morphological and physiological reactions of plants and the underlying molecular mechanisms when faced with stress from environmental or pathogenic factors. - Explores microbial dynamics within the plant rhizosphere and the application of plant growth-promoting bacteria as biofertilizers and endophytes as biocontrol agents to enhance crop growth and productivity for sustainable agriculture. - Systematically summarizes molecular mechanisms in plant stress tolerance and discusses the current applications of biotechnology, nanotechnology, and precision breeding to obtain stress-tolerant crops, contributing to climate-smart agriculture and global food security. - Includes contributions and references from multidisciplinary experts in plant stress physiology, plant molecular biology, plant biotechnology, agronomy, agriculture, nanotechnology, and environmental science. The content of the book is aimed at addressing UN SDG goals 2, 12, and 15 to achieve zero hunger and responsible consumption and production, and to sustainable use of terrestrial ecosystems, respectively. This comprehensive resource is suitable for researchers, students, teachers, agriculturists, and readers in plant science, and allied disciplines. Readership: Researchers, students, teachers, agriculturists, and readers in plant science, and allied disciplines.

Mycosporine-like amino acids (MAAs), have the property of absorbing ultraviolet rays, and are widely used as active ingredients in cosmetics such as sunscreens. They also have many bioactive properties that make them an attractive ingredient for pharmaceuticals and functional food. This book summarizes information about the molecular structures, activities and applications of mycosporine-like amino acids (MAAs). It aims to be an introductory book for undergraduate and graduate students in applied sciences, or as a handbook for researchers in pharmaceutical chemistry and cosmetics. Key features - 11 structured chapters covering the biochemistry of MAAs - Introduces readers to biochemical and synthetic pathways of MAAs - Presents information on many bioactive properties of MAAs including helioprotective, anti-inflammatory, antioxidant and anti-collagenase effects - Simple, clear explanations for learners - Academic and scholarly references for advanced readers - Illustrated appendices

This book is a guide to the application of ionic liquids (ILs) in the oil industry. It includes ten chapters that review basic and advanced topics. Starting with a general introduction to IL structure and properties, the book comprehensively explains the use of ILs in key petroleum extraction processes such as pollutant removal, demulsification, crude oil transport and oil recovery. Additional applications that are important for the sustainability management of petrochemical operations such as deepwell hydrate inhibition, CO2 capture, corrosion engineering, catalysis, hydrocarbon separation, bitumen extraction and stabilization are also included. Each chapter also provides bibliographic references for further reading. The wide range of topics makes this an informative reference to students and professionals in petroleum engineering, chemical engineering programs and any other training course that requires reading material for an understanding of the oil industry. General readers and researchers interested in the fascinating chemistry of ionic liquids will also enjoy this book.

This book informs readers about recent advances in graphene carbocatalysis encapsulating the current developments in the syntheses, properties, characterizations, functionalization, and catalytic applications of graphene, its derivatives, and composites. It serves as a comprehensive primary reference book for chemistry and engineering students who are required to learn about graphene chemistry in detail. It also serves as an introductory reference for industry professionals and researchers who are interested in graphene research as well as its emerging applications in catalysis and beyond. Volume 2 presents information about the industrial applications of graphene-based materials. It starts with graphene-based photocatalysis and progresses into the electrochemical applications of related materials. Highlighted applications in this domain include the use of graphene for hydrogen production and in electrodes for electrochemical sensors. It also covers developments in graphene-based smart energy materials. The final chapter of the volume summarizes the future of graphene-based material technology.

African Meteorites is a comprehensive exploration of meteorite falls and finds across the arid and hot regions of the African continent, offering profound insights into a significant collection of meteorites, second only to Antarctica. The book is divided into seven chapters, covering the origin and formation of meteorites, statistical analyses of meteorite falls in African countries, classes and mass distribution of meteorite finds, allocation and renaming of North West African (NWA) meteorites, exceptional and rare meteorite falls and finds in Eastern Morocco Sahara, protocols for recognizing, recovering, and preserving meteorites in Sahara, and a review of confirmed and proposed meteorite falls, finds, and impact structures in Egypt, Sudan, and Libya. With detailed and updated references complementing the simple presentation, this book is an invaluable resource for meteoriticists, hunters, museums, astronomers, students, and geology and astronomy enthusiasts, on the origin, characteristics, and collection of meteorites discovered in Africa. Key Themes: Meteorite origin, formation, and classificationMeteorite falls and finds in AfricaUnique features of North West Africa (NWA) meteoritesRare and exceptional meteorite falls and finds in Eastern Morocco SaharaProtocols for recognizing and preserving meteorites in the SaharaMeteorite falls, finds, and impact structures in Egypt, Sudan, and LibyaReadership: Meteoriticists, geologists, mineralogists, historians, researchers and general readers.

Rare-earth hexaborides are a group of materials composed of octahedral boron units. They are useful for making advanced ceramics that have a wide range of industrial applications due to their low electronic work functions, hardness, refractory properties, low electrical resistances and specific thermal expansion coefficients. Rare-Earth Metal Hexaborides: Synthesis, Properties, and Applications provides a quick reference on rare-earth metal hexaborides and their engineering applications. It provides a primer on rare earth elements followed by details of rare-earth hexaboride structures, synthetic methods, and information about their alloys and ceramic composites. References to scholarly research are also provided for assisting advanced readers. This reference is a handy source of information for chemical engineering and materials science scholars, and anyone interested in the applied chemistry of rare-earth metals and borides.

Cerium is the most abundant metal of rare-earth elements. It can be used to make materials such as phosphors and alloys, that have applications in various applied fields (like electronics, magnetics and heterogeneous catalysis) and devices (like catalytic converters and gas mantles). Cerium-Based Materials: Synthesis, Properties and Applications presents detailed knowledge about cerium materials. Starting with the history of cerium-based materials, it gives an introduction to the synthesis of chemicals like cerium oxides and composites. This is followed by information about characterization of cerium nanoparticles and industrial applications of cerium-based materials, with a focus on catalysis, biomedical engineering and pharmaceutical chemistry. This book is an essential reference for researchers and chemical engineers who want a summary of cerium materials and its applications.

Recent Trends in Livestock Innovative Technologies explores the most recent developments and developing trends in the livestock farming industry. The book delves into the application of innovative technologies in various aspects of livestock production, management, and health through edited chapters. The book starts with an outline of the difficulties the livestock sector faces and the necessity for technological solutions to these difficulties. Subsequent chapters cover innovations in this area. Key topics include: Advances in genetics and breeding methods: Contributing authors stress the possible impact of issues like marker-assisted selection, genomic selection, and gene editing on the future of animal breeding. Precision livestock farming: The use of sensor technologies, data analytics, and automation to monitor and control livestock production systems more effectively. The authors examine how these technologies enable real-time monitoring of environmental variables, animal activity, and health, which enhances production, animal welfare, and resource use. The management of feed and nutrition in livestock production: The book explores cutting-edge feed formulations, precise feeding systems, and alternative feed sources that can increase feed efficiency, lessen negative effects on the environment, and improve animal health. Fresh methods for illness prevention and management, such as the use of vaccines, diagnostics, and biosecurity measures. Social and ethical issues related to the adoption of cutting-edge livestock technologies. The authors attempt to give a fair assessment of the advantages and drawbacks of these technologies, and address concerns about animal welfare, environmental sustainability, and public perception of current farming practices. Recent Trends in Livestock Innovative Technologies is an informative resource for researchers, professionals, and policymakers interested in staying up-to-date with the advancements and future directions of the livestock industry.