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Roxy
by Neal Shusterman Jarrod ShustermanFrom the team that brought you the New York Times bestselling Dry comes a &“gritty and unflinching&” (Booklist) thriller that proves when gods play games, even love is a lie.The freeway is coming. It will cut the neighborhood in two. Construction has already started, pushing toward this corridor of condemned houses and cracked concrete with the momentum of the inevitable. Yet there you are, in the fifth house on the left, fighting for your life. Ramey, I. The victim of the bet between two manufactured gods: the seductive and lethal Roxy (Oxycontin), who is at the top of her game, and the smart, high-achieving Addison (Adderall), who is tired of being the helpful one, and longs for a more dangerous, less wholesome image. The wager—a contest to see who can bring their mark to &“the Party&” first—is a race to the bottom of a rave that has raged since the beginning of time. And you are only human, dazzled by the lights and music. Drawn by what the drugs offer—tempted to take that step past helpful to harmful…and the troubled places that lie beyond. But there are two I. Rameys—Isaac, a soccer player thrown into Roxy&’s orbit by a bad fall and a bad doctor and Ivy, his older sister, whose increasing frustration with her untreated ADHD leads her to renew her acquaintance with Addy. Which one are you?
Rubber Band Engineer
by Lance AkiyamaRubber Band Engineer: All-Ballistic Pocket Edition is a fun-filled book of backyard projects that's perfect for gifting. Shooting far, flying high, and delivering way more exciting results than expected are the goals of the gadgets in Rubber Band Engineer: All-Ballistic Pocket Edition. Discover unexpected ways to turn common materials into crafty contraptions that range from surprisingly simple to curiously complex. Through vivid color photos, you'll be guided to create slingshot rockets, unique catapults, improvised darts, and a clever crossbow. Whether you build one or all 10 of these designs, you'll feel like an ingenious engineer when you're through. Best of all, you don't need to be an experienced tinkerer to make any of the projects! All you need are household tools and materials, such as paper clips, pencils, paint stirrers, and ice pop sticks.Oh, and rubber bands. Lots of rubber bands.Grab your glue gun, pull out your pliers, track down your tape, and get started on the challenging, fun, and rewarding journey toward becoming a rubber band engineer.
Rubber Based Bionanocomposites: Applications (Advanced Structured Materials #227)
by P. M. VisakhThis book emphasizes on the various aspects of applications of rubber-based bionanocomposites. It summarizes in a comprehensive manner many of the recent research advances in the rubber-based bionanocomposites and their applications, such as biomedical packaging, structural applications, military applications, tire industry, and coating industry of different bionanocomposites of cellulose rubber, chitin rubber, starch rubber, soy protein rubber, PLA rubber, hemi cellulose rubber-based bionanocomposites. This book also discusses PHA-based rubber composites which covers an up to date record on the major findings and observations in the field of applications of rubber based bionanocomposites. This book serves as a “one stop” reference resource for important research accomplishments in the above area. Academics, researchers, scientists, rubber technologist, biotechnologist, and students in research and development will benefit from an application-oriented book that helps them to find solutions to both fundamental and applied problems.
Rubber Based Bionanocomposites: Characterisation (Advanced Structured Materials #210)
by Visakh P. M.This book presents detailed insights into the characterization of bionanocomposite materials based on rubber. Examining various classes of material bases, such as cellulose, chitin, starch, soy proteins, polylactic acid (PLA), bacterial cellulose and casein, it offers a valuable reference resource for graduate and postgraduate engineering students, researchers and polymer engineers working in industry.
Rubber Boots Methods for the Anthropocene: Doing Fieldwork in Multispecies Worlds
by Nils Bubandt Astrid Oberborbeck Andersen Rachel CypherA methodological follow-up to Arts of Living on a Damaged Planet The environmental and climatic crises of our time are fundamentally multispecies crises. And the Anthropocene, a time of &“human-made&” disruptions on a planetary scale, is a disruption of the fabric of life as a whole. The contributors to Rubber Boots Methods for the Anthropocene argue that understanding the multispecies nature of these disruptions requires multispecies methods.Answering methodological challenges posed by the Anthropocene, Rubber Boots Methods for the Anthropocene retools the empirical study of the socioecological chaos of the contemporary moment across the arts, human science, and natural science. Based on critical landscape history, multispecies curiosity, and collaboration across disciplines and knowledge systems, the volume presents thirteen transdisciplinary accounts of practical methodological experimentation, highlighting diverse settings ranging from the High Arctic to the deserts of southern Africa and from the pampas of Argentina to the coral reefs of the Western Pacific, always insisting on the importance of firsthand, &“rubber boots&” immersion in the field.The methodological companion to Arts of Living on a Damaged Planet: Ghosts and Monsters of the Anthropocene (Minnesota, 2017), this collection puts forth empirical studies of the multispecies messiness of contemporary life that investigate some of the critical questions of our time.Contributors: Filippo Bertoni, Museum für Naturkunde, Berlin; Harshavardhan Bhat, U of Westminster; Nathalia Brichet, U of Copenhagen; Janne Flora, Aarhus U, Denmark; Natalie Forssman, U of British Columbia; Peter Funch, Aarhus U; Kirsten Hastrup, U of Copenhagen; Colin Hoag, Smith College; Joseph Klein, U of California, Santa Cruz; Andrew S. Mathews, U of California, Santa Cruz; Daniel Münster, U of Oslo; Ursula Münster, U of Oslo; Jon Rasmus Nyquist, U of Oslo; Katy Overstreet, U of Copenhagen; Pierre du Plessis, U of Oslo; Meredith Root-Bernstein; Heather Anne Swanson, Aarhus U; Anna Lowenhaupt Tsing, U of California,Santa Cruz; Stine Vestbo.
Rubber Curing and Properties
by Jean-Maurice Vergnaud Iosif-Daniel RoscaFeaturing the work one of the world's foremost authorities on rubber curing, this uniquely comprehensive resource provides valuable data that will allow researchers and engineers to find solutions to their own curing problems. It delves into a variety of current evaluation practices for unvulcanized and vulcanized rubber and curing methods, i
Rubber Structures in Oil and Gas Equipment
by Jie Zhang Chuanjun HanRubber products are widely used in all aspects of oil and gas drilling and production, which play an important role in oil and gas development. The performances of rubber products determine the safe and efficient development of oil and gas. In this book, rubber experiment and the constitutive model have been introduced. The rubber sealing ring, metal-rubber sealing structure, stator rubber of PDM, wellhead BOP and downhole rubber packer have been investigated. The mechanical properties and sealing properties of rubber structures have been studied. These contents can provide a basis for the design, manufacture and maintenance of rubber structures.
Rubbish!: Dirt On Our Hands And Crisis Ahead
by Richard GirlingWe can no longer cope with our waste. Every hour in the UK we throw away enough rubbish to fill the Albert hall - a statistic quoted so often that perhaps we've stopped imagining what it means. And every year the flow accelerates.This is the story of our rubbish - from the first human bowel movement to the littering of outer space. With a hankerchief to his nose, Girling picks through our fridge mountain, our crumbling sewers, trading waste, packaging waste, hazardous industrial waste... it is a mucky saga of carelessness, greed and opportunism, wasted opportunity and official bungling. But Rubbish! is also a plea for us to consider other kinds of waste: the trashing of our landscape, the unstoppable floods of junk that clog our mailboxes, litter the skies and foul the airwaves...Rubbish! may not be a conventional battle cry but this is unmistakably a call to arms - not just for the three 'R's - reduce, re-use, recycle - but for us to fight for new ideas, brave initiative rather than reliance on old systems that are crumbling before our eyes.
Rubies and Implants: Aluminium oxide and Its Diverse Facets
by Bozena ArnoldA material that enchants us as ruby or sapphire and is applied in watches or lasers.A material that gives us a better life in the form of implants.A material that provides irreplaceable technical services with its hardness and heat resistance.A fascinating material. Its name is aluminium oxide.In this book you will find a lot of exciting and often astonishing information about this extraordinary material. First, the necessary facts about the substance aluminium oxide are given. Then the world of the gemstones ruby and sapphire is described. And finally, the world of alumina as well as technical ceramics is illuminated.
Ruby Goldberg's Bright Idea
by Anna HumphreyRuby wants first prize at the fifth grade science fair—and she thinks her quirky, creative, Rube Goldberg–esque invention is just the way to get it! Rife with “depth and charm,” this story is peppered with engaging science facts and insights (Publishers Weekly).Ten-year-old Ruby Goldberg is determined to win her school science fair and beat her nemesis Dominic Robinson. She’s snagged second place for the last two years, and she’s set on claiming first prize. The only trouble is that Ruby has no ideas. When her grandfather’s beloved basset hound dies, Ruby thinks of the perfect thing that will cheer him up and win her first place—an innovative, state-of-the-art, not-to-be-duplicated Ruby Goldberg invention! Before long Ruby is so busy working on her idea that she ignores everything else in her life, including her best friend, Penny. And what started out as simple turns into something much more complicated! Can Ruby get her priorities—and her project—in order before it’s too late?
Rudiments of Signal Processing and Systems
by Tom J. MoirThis book is intended to be a little different from other books in its coverage. There are a great many digital signal processing (DSP) books and signals and systems books on the market. Since most undergraduate courses begin with signals and systems and then move on in later years to DSP, I felt a need to combine the two into one book that was concise yet not too overburdening. This means that students need only purchase one book instead of two and at the same time see the flow of knowledge from one subject into the next. Like the rudiments of music, it starts at the very beginning with some elementary knowledge and builds on it chapter by chapter to advanced work by chapter 15. I have been teaching now for 38 years and always think it necessary to credit the pioneers of the subjects we teach and ask the question “How did we get to this present stage in technological achievement”? Therefore, in Chapter 1 I have given a concise history trying to not sway too much away from the subject area. This is followed by the rudimentary theory in increasing complexity. It has already been taught successfully to a class at Auckland University of Technology New Zealand.
Ruffe: The spiky little freshwater ruffian
by Mark EverardThis book is dedicated to the spiky little freshwater ruffian known better as the ruffe, pope, 'tommy ruffe' and other local names. A fascinating little fish, the ruffe is long overdue a book all of its own. Much loved by many anglers, ruffe can also be problematic when introduced beyond their native range. Scientist, author and broadcaster Dr Mark Everard details fascinating aspects of the biology, angling and wider contributions to society of the ruffe.
Rufus: The Remarkable True Story of a Tamed Fox
by Ernest DudleyRufus was born free in the Scottish highlands; but when he came into the possession of Don MacCaskill, he proved a willing captive. Not surprising in view of the understanding care and loving attention he received in the MacCaskill household. The wonderful part about this story is how Rufus responded to his captivity and to the other pets in the MacCaskill household. There was Cronk the raven, Shuna the Labrador pup, and Cassius the half-wild kitten; and Rufus became close friends with them all. Ernest Dudley has written a factual narrative of great warmth about an animal too often condemned to death for reasons not always valid and seldom without abiding prejudice. The book recounts how this playful, affectionate fox refuses to return to the wild; how he becomes acquainted with a vixen, mates, and breeds young in captivity. How Rufus allows strangers to hold him; how he poses for pictures; and how his unique personality captivates all who come to know him. This revealing document will be deeply enjoyed by everyone who loves animals or is interested in animal behavior.
Ruggiero Boscovich’s Theory of Natural Philosophy: Points, Distances, Determinations (Science Networks. Historical Studies #60)
by Luca GuzzardiDrawing on published works, correspondence and manuscripts, this book offers the most comprehensive reconstruction of Boscovich’s theory within its historical context. It explains the genesis and theoretical as well as epistemological underpinnings in light of the Jesuit tradition to which Boscovich belonged, and contrasts his ideas with those of Newton, Leibniz, and their legacy. Finally, it debates crucial issues in early-modern physical science such as the concept of force, the particle-like structure of matter, the idea of material points and the notion of continuity, and shares novel insights on Boscovich’s alleged influence on later developments in physics. With its attempt to reduce all natural forces to one single law, Boscovich’s Theory of Natural Philosophy, published in 1758, left a lasting impression on scientists and philosophers of every age regarding the fundamental unity of physical phenomena. The theory argues that every pair of material points is subject to one mutual force — and always the same force — which is their propensity to be mutually attracted or repelled, depending on their distance from one another. Furthermore, the action of this unique force is visualized through a famous diagram that fascinated generations of scientists. But his understanding of key terms of the theory — such as the notion of force involved and the very idea of a material point — is only ostensibly similar to our current conceptual framework. Indeed, it needs to be clarified within the plurality of contexts in which it has emerged rather than being considered in view of later developments.The book is recommended for scholars and students interested in the ideas of the early modern period, especially historians and philosophers of science, mathematicians and physicists with an interest in the history of the discipline, and experts on Jesuit science and philosophy.
Ruido: Un fallo en el juicio humano
by Cass R. Sunstein Daniel Kahneman Olivier SibonyPARA ENTENDER CÓMO PENSAMOS Y PENSAR MEJOR, HAY QUE LEER A KAHNEMAN Premio Nobel de Economía Dos médicos en la misma ciudad pueden dar diagnósticos diferentes a pacientes idénticos; dos jueces pueden dictar sentencias distintas ante delitos similares; nosotros mismos podemos decidir una cosa u otra según sea por la mañana o por la tarde, o según se acerque o no la hora de comer. Estos son ejemplos de ruido: el sesgo que conlleva variabilidad en juicios que deberían ser iguales. El ruido está presente en todas las decisiones individuales y colectivas, y produce errores en innumerables terrenos, desde la medicina hasta la economía, pasando por el derecho, la sanidad, la protección infantil y la contratación. Además, también nos importuna e influye a la hora de tomar muchas de nuestras decisiones cotidianas. Daniel Kahneman, uno de los psicólogos más importantes del mundo, junto con Cass R. Sunstein y Olivier Sibony, dos eminencias mundiales en pensamiento estratégico, nos enseñan a escuchar ese ruido, cuyo impacto tendemos a ignorar, y a reducirlo para mejorar nuestros juicios. Basado en el mismo tipo de análisis agudo e ingeniosos ejemplos que convirtió Pensar rápido, pensar despacio en un best seller internacional, Ruido ofrece una serie de remedios originales, prácticos y sencillos para pensar mejor. La crítica ha dicho:«Una investigación absolutamente brillante de un problema social inmenso que nos ha pasado desapercibido cuando ha estado siempre ante nuestros ojos.»Steven Levitt, autor de Freakonomics «Monumental y apasionante. Excepcional.»The Sunday Times «Un tour de force de sabiduría y claridad.»The New York Times «Puede que Ruido sea el libro más importante que he leído en más de una década. Una obra maestra.»Angela Duckworth, autora de Grit «Un logro magistral y un hito en el campo de la psicología.»Philip E. Tetlock, coautor de Superpronosticadores «Una exploración electrizante de la mente humana. Este libro cambiará permanentemente nuestra forma de pensar sobre la escala y el alcance de los prejuicios.»David Lammy, diputado por Tottenham «Prepárate para que algunas de las mentes más brillantes del mundo te ayuden a repensar tu forma de evaluar a las personas, tomar decisiones y resolver problemas.»Adam Grant, autor de Think Again y presentador del TED podcast WorkLife
Ruins (Pathfinder #2)
by Orson Scott CardFrom the author of Ender's Game, the soon-to-be major motion picture!A complex fate. A deadly path. Book two in the New York Times bestselling series Publishers Weekly calls "an epic in the best sense." <P><P>When Rigg and his friends crossed the Wall between the only world they knew and a world they could not imagine, he hoped he was leading them to safety. But the dangers in this new wallfold are more difficult to see. Rigg, Umbo, and Param know that they cannot trust the expendable, Vadesh--a machine shaped like a human, created to deceive--but they are no longer certain that they can even trust one another. But they will have little choice. Because although Rigg can decipher the paths of the past, he can't yet see the horror that lies ahead: A destructive force with deadly intentions is hurtling toward Garden. If Rigg, Umbo, and Param can't work together to alter the past, there will be no future. <P><P>The adventure, suspense, and time travel continue in this second installment in the critically acclaimed New York Times and Publishers Weekly bestselling Pathfinder series.
Rules and Exceptions in Biology: from Fundamental Concepts to Applications
by Alfredo V. Peretti Lucía S. Calbacho-Rosa Paola A. Olivero Mariela A. Oviedo-Diego David E. VrechThis is the first book to cover and explore the rules and exceptions in biology. It presents past and current perspectives on the subject and discusses the various situations of transition from rule to exception and vice versa. In doing so, the book fills a gap in the scientific literature and stimulates useful and valuable discussions among researchers working in biology worldwide. The chapters begin with a theoretical framework, followed by the main topic(s) or question(s), and a summary of previous work on the topic. Examples are discussed, with concluding remarks and suggestions for future research. A section with key concepts is included at the end of each chapter, allowing the reader to jump directly to the most important findings or observations. Each chapter is written to be used as a reference by graduate students and professionals from a variety of scientific disciplines (e.g. behavior, ecology, evolution, and systematics).
Rules and Meaning in Quantum Mechanics (European Studies in Philosophy of Science #13)
by Iulian D. ToaderThis book pursues an investigation at the intersection of philosophy of physics and philosophy of language, and offers a critical analysis of rival explanations of the semantic facts of quantum mechanics. The author presents new insights, including a reworking of Einstein's incompleteness argument, a fresh take on Bohr's correspondence principle, and several critiques of recent views in the philosophy of quantum logic. The book will be of interest to scholars and students whose philosophical work concerns language, logic, or physics.
Rules and Red Tape: A Prism for Public Administration Theory and Research
by Barry Bozeman Mary K. FeeneyThis work includes a brief history of skyscrapers as well as chapters on elevators and communications, facades and facing, mechanical and electrical systems, forces of nature, and much more.
Rules of Thumb for Water and Wastewater Engineers
by Moe ToghraeiRules of Thumb for Water and Wastewater Engineers A unique resource that helps water engineers make quick evaluations and estimate design decisions Water and wastewater treatment are essential processes in the water economy and as such, vital to the health and success of any community. At its core, the essence of this process is converting one analysis (source water, which can come from wells, lakes, sea, wastewater or even treated wastewater) into goal water. The process is generally separated by industrial and municipal processes according to intention of the produced water. Relying on a contaminant-classified approach, Rules of Thumb for Water and Wastewater Engineers provides engineers with the necessary skills to ascertain the best methodology for a broad range of impurities in an H2O source. Within these bounds, the manual offers guidelines for important areas of management: potable water treatment, municipal wastewater treatment, industrial water treatment, and industrial wastewater treatment. As the first step to water treatment is to identify both consumers and contaminants, this program gives engineers a resource to easily reference the appropriate chapter for a given contaminant, and thereby evaluate situations quickly and estimate design decisions at a glance before a more detailed approach is taken. Rules of Thumb for Water and Wastewater Engineers readers will also find: Tools that provide quick way to evaluate a situation and make quick decisions Two chapters on removing dissolved materials, a complex topic that deserves much attention Rules of thumb developed over the course of over 20 years of experience by the author Illustrations and figures to help elucidate points made throughout the text Rules of Thumb for Water and Wastewater Engineers is a useful reference for environmental engineers, chemical engineers, municipal engineers, chemists, and industries including the paper and food industry.
Rules of the Road: The Automobile and the Transformation of American Criminal Justice
by Spencer HeadworthA thorough and engaging look at an unexpected driver of changes in the American criminal justice system Driving is an unavoidable part of life in the United States. Even those who don't drive much likely know someone who does. More than just a simple method of getting from point A to point B, however, driving has been a significant influence on the United States' culture, economy, politics – and its criminal justice system. Rules of the Road tracks the history of the car alongside the history of crime and criminal justice in the United States, demonstrating how the quick and numerous developments in criminal law corresponded to the steadily rising prominence, and now established supremacy, of the automobile. Spencer Headworth brings together research from sociology, psychology, criminology, political science, legal studies, and histories of technology and law in illustrating legal responses to changing technological and social circumstances. Rules of the Road opens by exploring the early 20th-century beginnings of the relationship between criminal law and automobility, before moving to the direct impact of the automobile on prosecutorial and criminal justice practices in the latter half of the 20th century. Finally, Headworth looks to recent debates and issues in modern-day criminal justice to consider what this might presage for the future. Using a seemingly mundane aspect of daily life as its investigative lens, this creative, imaginative, and thoroughly researched book provides a fresh perspective on the transformations of the U.S. criminal justice system.
Rules, Reason, and Self-Knowledge
by Julia TanneyTanney challenges not only the cognitivist approach that has dominated philosophy and the special sciences for fifty years, but metaphysical-empirical approaches to the mind in general. Rules, Reason, and Self-Knowledge advocates a return to the world-involving, circumstance-dependent, normative practices where the rational mind has its home.
Ruling Reptiles: Crocodylian Biology and Archosaur Paleobiology (Life of the Past)
by James O. Farlow Matthew F. Bonnan Ray Wilhite Christine Böhmer Stephanie K. Drumheller Roger S. Seymour Hendrik Klein Holly N. Woodward Ricardo Araújo Vincent Fernandez Peter S. Johnston Christopher R. Langel Sarah W. Keenan Marisa Tellez Patrick V. Wheatley Ryan J. Haupt Alexander K. Hastings Domenic C. D'Amore Jackson K. Njau Lucy Gomes de Souza Rodrigo Vargas Pêgas Mauro Bruno da Silva Lacerda Kirstin S. Brink Aaron R. LeBlanc Thomas M. Cullen Alida M. Bailleul Mary H. Schweitzer Julia Audije-Gil Fernando Barroso-Barcenilla Oscar Cambra-Moo Haley D. O'Brien Peter Brice Gordon Grigg Cory J. KumagaiModern crocodylians—crocodiles, alligators, caiman (Central and South America), and gharials (India)—have evolved over 250 million years from a fully terrestrial, bipedal ancestor. Along with birds, crocodylians are the only living members of Archosauria, the group including nonavian dinosaurs. Ruling Reptiles features contributions on a broad range of topics surrounding crocodylian evolution and biology including osteology, osteohistology, developmental biology, myology, odontology, functional morphology, allometry, body size estimation, taphonomy, parasitology, ecology, thermophysiology, and ichnology. It demonstrates how the wide variety of these studies can also provide crucial insights into dinosaurian biology and evolution.Featuring the latest findings and interpretations, Ruling Reptiles: Crocodylian Biology and Archosaur Paleobiology is an essential resource for zoologists, biologists, and paleontologists.
Rumbles: A Curious History of the Gut: The Secret Story of the Body's Most Fascinating Organ
by Elsa RichardsonThe fascinating—and often secret—history of the body's most fascinating system: the gut.The stomach is notoriously outspoken. It growls, gurgles, and grumbles while other organs remain silent, inconspicuous, and content. For centuries humans have puzzled over this rowdy, often overzealous organ, deliberating on the extent of its influence over cognition, mental wellbeing and emotions, and wondering how the gut became so central to our sense of self. Traveling from ancient Greece to Victorian England, eighteenth-century France to modern America, cultural historian Elsa Richardson leads us on a lively tour of the gut, exploring all the ways that we have imagined, theorized, and probed the mysteries of the gastroenterological system. We'll meet a wildly diverse cast of characters including Edwardian body builders, hunger-striking suffragettes, demons, medieval alchemists, and one poor teenage girl plagued by a remarkably vocal gut, all united by this singular organ. Engaging, eye-opening, and thought-provoking, Rumbles leaves no stone unturned, scrutinising religious tracts and etiquette guides, satirical cartoons and political pamphlets, in its quest to answer the millennia-old question: Are we really ruled by our stomachs?
Rumen Microbiology: From Evolution to Revolution
by Anil Kumar Puniya Rameshwar Singh Devki Nandan KamraThis book offers an in-depth description of different groups of microbes (i. e. bacteria, protozoa, fungi and viruses) that exist in the rumen microbial community, and offers an overview of rumen microbiology, the rumen microbial ecosystem of domesticated ruminants, and rumen microbial diversity. It provides the latest concepts on rumen microbiology for scholars, researchers and teachers of animal and veterinary sciences. With this goal in mind, throughout the text we focus on specific areas related to the biology and complex interactions of the microbes in rumen, integrating significant key issues in each respective area. We also discuss rumen manipulation with plant secondary metabolites, microbial feed additives, utilization of organic acids, selective inhibition of harmful rumen microbes, and 'omics' approaches to manipulating rumen microbial functions. A section on the exploration and exploitation of rumen microbes addresses topics including the current state of knowledge on rumen metagenomics, rumen: an underutilized niche for industrially important enzymes and ruminal fermentations to produce fuels. We next turn our attention to commercial applications of rumen microbial enzymes and to the molecular characterization of euryarcheal communities within an anaerobic digester. A section on intestinal disorders and rumen microbes covers acidosis in cattle, urea/ ammonia metabolism in the rumen and nitrate/ nitrite toxicity in ruminant diets. Last, the future prospects of rumen microbiology are examined, based on the latest developments in this area. In summary, the book offers a highly systematic collection of essential content on rumen microbiology.