Browse Results

Showing 50,126 through 50,150 of 75,581 results

Pi in the Sky

by Wendy Mass

Joss is the seventh son of the Supreme Overlord of the Universe, and all he gets to do is deliver pies. That's right: pies. Of course these pies actually hold the secrets of the universe between their buttery crusts, but they're still pies.Joss comes from a family of overachievers, and is happy to let his older brothers shine. But when Earth suddenly disappears, Joss is tasked with the not-so-simple job of bringing it back. With the help of an outspoken girl from Earth named Annika, Joss embarks on the adventure of a lifetime and learns that the universe is an even stranger place than he'd imagined.

Pick Up Sticks

by Jennifer Mason

Would you believe that two NASA scientists used a baby toy to inspire their design for the next generation of space explorers? Read on to learn about how Adrian Agogino and Vytas SunSpiral designed the SUPERball Bot and what their plans are for the future.

Picking Up: On the Streets and Behind the Trucks with the Sanitation Workers of New York City

by Robin Nagle

A “gripping” behind-the-scenes look at New York’s sanitation workers by an anthropologist who joined the force (Robert Sullivan, author of Rats).America’s largest city generates garbage in torrents—11,000 tons from households each day on average. But New Yorkers don’t give it much attention. They leave their trash on the curb or drop it in a litter basket, and promptly forget about it. And why not? On a schedule so regular you could almost set your watch by it, someone always comes to take it away.But who, exactly, is that someone? And why is he—or she—so unknown?In Picking Up, the anthropologist Robin Nagle introduces us to the men and women of New York City’s Department of Sanitation and makes clear why this small army of uniformed workers is the most important labor force on the streets. Seeking to understand every aspect of the Department’s mission, Nagle accompanied crews on their routes, questioned supervisors and commissioners, and listened to story after story about blizzards, hazardous wastes, and the insults of everyday New Yorkers. But the more time she spent with the DSNY, the more Nagle realized that observing wasn’t quite enough—so she joined the force herself. Driving the hulking trucks, she obtained an insider’s perspective on the complex kinships, arcane rules, and obscure lingo unique to the realm of sanitation workers.Nagle chronicles New York City’s four-hundred-year struggle with trash, and traces the city’s waste-management efforts from a time when filth overwhelmed the streets to the far more rigorous practices of today, when the Big Apple is as clean as it’s ever been.“An intimate look at the mostly male work force as they risk injury and endure insult while doing the city’s dirty work [and] a fascinating capsule history of the department.” —Publishers Weekly“[Nagle’s] passion for the subject really comes to life.” —The New York Times“Evokes the physical and psychological toll of this dangerous, filthy, necessary work.” —Nature“Nagle joins the likes of Jane Jacobs and Jacob Riis, writers with the chutzpah to dig deep into the Rube Goldberg machine we call the Big Apple and emerge with a lyrical, clear-eyed look at how it works.” — Mother Jones

Picks and Shovels: A Martin Hench Novel (The Martin Hench Novels)

by Cory Doctorow

New York Times bestselling author Cory Doctorow returns to the world of Red Team Blues to bring us the origin story of Martin Hench and the most powerful new tool for crime ever invented: the personal computer.The year is 1986. The city is San Francisco. Here, Martin Hench will invent the forensic accountant--what a bounty hunter is to people, he is to money--but for now he's an MIT dropout odd-jobbing his way around a city still reeling from the invention of a revolutionary new technology that will change everything about crime forever, one we now take completely for granted.When Marty finds himself hired by Silicon Valley PC startup Fidelity Computing to investigate a group of disgruntled ex-employees who've founded a competitor startup, he quickly realizes he's on the wrong side. Marty ditches the greasy old guys running Fidelity Computing without a second thought, utterly infatuated with the electric atmosphere of Computing Freedom. Located in the heart of the Mission, this group of brilliant young women found themselves exhausted by the predatory business practices of Fidelity Computing and set out to beat them at their own game, making better computers and driving Fidelity Computing out of business. But this optimistic startup, fueled by young love and California-style burritos, has no idea the depth of the evil they're seeking to unroot or the risks they run.In this company-eat-company city, Martin and his friends will be lucky to escape with their lives.At the Publisher's request, this title is being sold without Digital Rights Management Software (DRM) applied.

Picky Peggy (Science Solves It!)

by Jennifer Dussling

Solve kid-sized dilemmas and mysteries with the Science Solves It! series. These fun books for kids ages 5–8 blend clever stories with real-life science. Why did the dog turn green? Can you control a hiccup? Is that a UFO? Find the answers to these questions and more as kid characters dive into physical, life, and earth sciences. When Mr. Cooper gives Peggy a new baby duck, she promises to take good care of it. But when Fluff's feathers begin to droop and his eyes are no longer bright and shiny, Peggy discovers why and learns that good nutrition is very important - for growing ducks and growing girls! Books in this perfect STEM series will help kids think like scientists and get ahead in the classroom. Activities and experiments are included in every book! (Level One; Science topic: Nutrition)

Pico-solar Electric Systems: The Earthscan Expert Guide to the Technology and Emerging Market (Earthscan Expert)

by John Keane

This book provides a comprehensive overview of the technology behind the pico-solar revolution and offers guidance on how to test and choose quality products. The book also discusses how pioneering companies and initiatives are overcoming challenges to reach scale in the marketplace, from innovative distribution strategies to reach customers in rural India and Tanzania, to product development in Cambodia, product assembly in Mozambique and the introduction of ‘pay as you go’ technology in Kenya. Pico-solar is a new category of solar electric system which has the potential to transform the lives of over 1.6 billion people who live without access to electricity. Pico-solar systems are smaller and more affordable than traditional solar systems and have the power to provide useful amounts of electricity to charge the increasing number of low power consuming appliances from mobile phones, e-readers and parking metres, to LED lights which have the power to light up millions of homes in the same way the mobile phone has connected and empowered communities across the planet. The book explains the important role pico-solar has in reducing reliance on fossil fuels while at the same time tackling world poverty and includes useful recommendations for entrepreneurs, charities and governments who want to participate in developing this exciting and rapidly expanding market.

Pictorial Atlas of Soil and Seed Fungi: Morphologies of Cultured Fungi and Key to Species,Third Edition (Mycology)

by Tsuneo Watanabe

This third edition describes and illustrates more than 515 fungal species, including 49 oomycetous, 35 zygomycetous, 49 ascomycetous, 38 basidiomycetous, and 344 anamorphic species. All fungi are described alphabetically in order of Oomycota, Zygomycota, Ascomycota, Basidiomycota, and Anamorphic (Deuteromycetous) fungi. For each genus, the atlas includes type species, references, morphology, and materials. The book illustrates all fungi alongside morphologies and colonies of their fresh agar cultures or dried specimens, providing ready access to morphologically similar fungi for quick comparison. This edition also contains a bonus CD-ROM, which includes color versions of all images from the book.

Pictorial Atlas of Soilborne Fungal Plant Pathogens and Diseases (Mycology #34)

by Tsuneo Watanabe

The Pictorial Atlas of Soilborne Fungal Plant Pathogens and Diseases describes the soilborne fungal diseases caused by Oomycetes, Zygomycetes, Ascomycetes, Basidiomycetes, and Deuteromycetous (Anamorphic) fungi. Soilborne fungal diseases are significant as both environmental and agricultural problems, yet it is difficult to understand the ecology of pathogenic fungi and its effective control. This book provides very detailed information on many of the commonly and not so commonly encountered groups of soilborne fungi diseases. It will be a useful reference for those teaching and conducting research in mycology, plant pathology, soilborne plant diseases, and the ecology of fungal communities.

Picture Science

by Carla Neumann-Hinds

Make digital photography an important part of your early childhood program!Young children love to investigate the natural world, and they love to take photographs.Picture Science will help you go beyond just documenting class projects. It will show you how to use digital photography to make each step in the scientific process-from posing a question, to gathering data, to showing your findings-concrete and fun for children.Keyed throughout to early learning standards, Picture Science provides inspiring examples that will stimulate you to design your own lesson plans. Technical advice and tips for buying a camera for your center or family child care business are included as well.Picture Science won the prestigious 2007 Directors' Choice Award and Judges' Selection Award from Early Childhood News

Piercing of Materials with Abrasive Water Jet (SpringerBriefs in Applied Sciences and Technology)

by Ivana Kleinedlerová Peter Kleinedler

This book presents an innovative approach for piercing materials and shows how the application of computer software and correct setting of technological parameters in production are important tools for achieving the required production quality. Piercing of material is performed in practice for all types and thicknesses of materials, always within the residual material. This book shows how the AWJC piercing in material can be performed in a more productive way as is currently the case, bringing ultimate reduction of cutting costs, especially for cut material saving.

Pieza a pieza: La historia del chico que se construyó a sí mismo

by David Aguilar

No te pierdas la increíble historia de superación de David Aguilar, Hand Solo en redes. «Muchas veces me preguntan qué se siente cuando te falta medio brazo. Y, la verdad... no lo sé. ¿Qué sentís cuando os falta un dedo? Contadlos por mí, ¿vale? Dejad de leer y contad los dedos que tenéis. «Uno, dos, tres, cuatro, cinco, seis, siete, ocho, nueve, ¡diez! ¿Qué sentís cuando os falta el onceavo dedo? No lo sabéis; yo tampoco. Lo que sé es que no os falta nada; os sobra. Os sobran posibilidades.» En este libro, David Aguilar narra, con una voz fresca y cercana, cómo construyó su primer brazo de Lego y otras muchas historias con las que enseñarnos la lección más importante que ha aprendido: no hay mejor prótesis que el amor. Sobre los autores...DAVID Y FERRAN AGUILAR David nació con el síndrome de Poland. Sus padres, Ferran y Nathalie, así como su hermana Naia, lo han acompañado en todos sus proyectos. Con tan solo nueve años construyó su primera prótesis y desde entonces no ha parado de crear y evolucionar.Ferran, por su parte, no ha escatimado esfuerzo en dar a conocer la historia de su hijo, con la seguridad de que, algún día, inspiraría al mundo entero. Esta familia andorrana se ha convertido recientemente también en protagonista de un documental, Mr. Hand Solo, en el que comparten su historia de superación. Pieza a pieza supone la última muestra de su empeño en participar en un sinfín de proyectos solidarios con los que luchar contra el estigma de la discapacidad y el bullying.

Piezo-Active Composites

by Christopher R. Bowen Vitaly Yu. Topolov Paolo Bisegna

The book is devoted to the problem of microgeometry properties and anisotropy relations in modern piezo-active composites. These materials are characterized by various electromechanical properties and remarkable abilities to convert mechanical energy into electric energy and vice versa. Advantages of the performance of the composites are discussed in the context of the orientation effects, first studied by the authors for main connectivity patterns and with due regard to a large anisotropy of effective piezoelectric coefficients and electromechanical coupling factors. The novelty of the book consists in the systematization results of orientation effects, the anisotropy of piezoelectric properties and their role in forming considerable hydrostatic piezoelectric coefficients, electromechanical coupling factors and other parameters in the composites based on either ferroelectric ceramic or relaxor-ferroelectric single crystals.

Piezo-Active Composites: Microgeometry–Sensitivity Relations (Springer Series in Materials Science #271)

by Christopher R. Bowen Vitaly Yu. Topolov Paolo Bisegna

This book is devoted to the systematic description of the role of microgeometry of modern piezo-active composites in the formation of their piezoelectric sensitivity. In five chapters, the authors analyse kinds of piezoelectric sensitivity for piezo-active composites with specific connectivity patterns and links between the microgeometric feature and piezoelectric response. The role of components and microgeometric factors is discussed in the context of the piezoelectric properties and their anisotropy in the composites. Interrelations between different types of the piezoelectric coefficients are highlighted. This book fills a gap in piezoelectric materials science and provides readers with data on the piezoelectric performance of novel composite materials that are suitable for sensor, transducer, hydroacoustic, energy-harvesting, and other applications.

Piezo-Electric Electro-Acoustic Transducers

by Valeriy Sharapov Zhanna Sotula Larisa Kunickaya

Electroacoustic transducers (EAT) are devices, which transform electric energy to energy of acoustic fluctuations. Principles of action, design of transducers for work in air and water as well as for non-destructive control are described in the book. New technologies of designing EAT, not only expanding designing possibilities, are described. They also allow to create transducers with improved characteristics. In particular, methods to increase target capacity (sound pressure), decrease working (resonant) frequency of transducers and expand frequencies of projectors and sound receivers are developed. Methods and control units of transducers in batch production of transducers are described, too.

Piezo-Particulate Composites: Manufacturing, Properties, Applications (Springer Series in Materials Science #283)

by Christopher R. Bowen Vitaly Yu. Topolov Hamideh Khanbareh

This book provides an overview of the current state of the art in novel piezo-composites based on ferroelectrics. Covering aspects ranging from theoretical materials simulation and manufacturing and characterization methods, to the application and performance of these materials, it focuses on the optimization of the material parameters.Presenting the latest findings on modern composites and highlighting the applications of piezoelectric materials for sensors, transducers and hydro-acoustics, the book addresses an important gap in the physics of active dielectrics and materials science and describes new trends in the research on ferroelectric composites.

Piezoelectric Accelerometers with Integral Electronics

by Felix Levinzon

This book provides an invaluable reference to Piezoelectric Accelerometers with Integral Electronics (IEPE). It describes the design and performance parameters of IEPE accelerometers and their key elements, PE transducers and FET-input amplifiers. Coverage includes recently designed, low-noise and high temperature IEPE accelerometers. Readers will benefit from the detailed noise analysis of the IEPE accelerometer, which enables estimation of its noise floor and noise limits. Other topics useful for designers of low-noise, high temperature silicon-based electronics include noise analysis of FET amplifiers, experimental investigation and comparison of low-frequency noise in different JFETs and MOSFETs, and ultra-low-noise JFETs (at level of 0. 6 nV/√Hz). The discussion also includes ultra-low-noise (at level of 3 ng/√Hz) seismic IEPE accelerometers and high temperature (up to 175 C) triaxial and single axis miniature IEPE accelerometers, along with key factors for their design. * Provides a comprehensive reference to the design and performance of IEPE accelerometers, including low-noise and high temperature IEPE sensors; * Includes noise analysis of the IEPE accelerometer, which enables estimation of the its noise floor and noise limits; * Describes recently design of ultra-low-noise (at level of 3 ng/√Hz) IEPE seismic accelerometers and high temperature (up to 175 C) triaxial and single axis miniature IEPE accelerometers; * Compares low-frequency noise in different JFETs and MOSFETs including measurement results of ultra-low-noise (at level of 0. 6 nV/√Hz) JFET; * Presents key factors for design of low-noise and high temperature IEPE accelerometer and their electronics.

Piezoelectric Actuators and Generators for Energy Harvesting: Research And Development (Innovation And Discovery In Russian Science And Engineering Ser.)

by Ivan A. Parinov Sergey N. Shevtsov Arkady N. Soloviev Alexander V. Cherpakov Valery A. Chebanenko

This book presents new approaches to R&D of piezoelectric actuators and generators of different types based on established, original constructions and contemporary research into framework of theoretical, experimental, and numerical methods of physics, mechanics, and materials science. Improved technical solutions incorporated into the devices demonstrate high output values of voltage and power, allowing application of the goods in various areas of energy harvesting. The book is divided into seven chapters, each presenting main results of the chapter, along with a brief exposition of novel findings from around the world proving context for the author’s results. It presents particular results of the Soviet and Russian schools of Mechanics and Material Sciences not previously available outside of Russia.

Piezoelectric Actuators: Control Applications of Smart Materials

by Seung-Bok Choi Young-Min Han

Currently, many smart materials exhibit one or multifunctional capabilities that are being effectively exploited in various engineering applications, but these are only a hint of what is possible. Newer classes of smart materials are beginning to display the capacity for self-repair, self-diagnosis, self-multiplication, and self-degradation. Ultima

Piezoelectric Bending Transducers: The Physics of Their Static and Dynamic Behaviour A Textbook About Indispensable Actuators in Microtechnology, Mechatronics and Medical Technology

by Rüdiger G. Ballas

The wide range of industrial applications for piezoelectric bending transducers as actuators and high-precision positioning systems requires their performance to be adapted to the respective task. This presupposes that it is already possible to predict the static and dynamic behaviour of such actuator structures in the respective application during the design and development phase. The geometric dimensions of the individual active and passive layers, their sequence in the layer system and their elasto- and electromechanical properties are key factors here. This book focuses on the analytical description of the static and dynamic behaviour of piezoelectric multilayer bending transducers. It is intended to provide students of natural sciences and engineering as well as engineers and scientists in practice with a solid engineering tool for the design of piezoceramic bending transducers. The benefits of the analytical description obtained are demonstrated based on real measurements on a monomorph in multilayer technology. The requirements for understanding the material are limited to basic knowledge of one- and multidimensional analysis as well as elementary Newtonian mechanics, technical mechanics and electricity.

Piezoelectric Ceramic Resonators

by Jiří Erhart Petr Půlpán Martin Pustka

This book helps the reader to understand the specific properties of piezoelectric ceramic resonators. It provides their theoretical description by immitance and equivalent circuit method. The nummerical modelling described is accompanied by examples of properties measured experimentally. Piezoelectric ceramic transformers are also covered, followed by a series of solved and unsolved problems prepared specially for students.

Piezoelectric Energy Harvesting

by Alper Erturk Daniel J. Inman

The transformation of vibrations into electric energy through the use of piezoelectric devices is an exciting and rapidly developing area of research with a widening range of applications constantly materialising. With Piezoelectric Energy Harvesting, world-leading researchers provide a timely and comprehensive coverage of the electromechanical modelling and applications of piezoelectric energy harvesters. They present principal modelling approaches, synthesizing fundamental material related to mechanical, aerospace, civil, electrical and materials engineering disciplines for vibration-based energy harvesting using piezoelectric transduction.Piezoelectric Energy Harvesting provides the first comprehensive treatment of distributed-parameter electromechanical modelling for piezoelectric energy harvesting with extensive case studies including experimental validations, and is the first book to address modelling of various forms of excitation in piezoelectric energy harvesting, ranging from airflow excitation to moving loads, thus ensuring its relevance to engineers in fields as disparate as aerospace engineering and civil engineering.Coverage includes:Analytical and approximate analytical distributed-parameter electromechanical models with illustrative theoretical case studies as well as extensive experimental validationsSeveral problems of piezoelectric energy harvesting ranging from simple harmonic excitation to random vibrations Details of introducing and modelling piezoelectric coupling for various problemsModelling and exploiting nonlinear dynamics for performance enhancement, supported with experimental verificationsApplications ranging from moving load excitation of slender bridges to airflow excitation of aeroelastic sections A review of standard nonlinear energy harvesting circuits with modelling aspects.

Piezoelectric MEMS Resonators

by Harmeet Bhugra Gianluca Piazza

This book introduces piezoelectric microelectromechanical (pMEMS) resonators to a broad audience by reviewing design techniques including use of finite element modeling, testing and qualification of resonators, and fabrication and large scale manufacturing techniques to help inspire future research and entrepreneurial activities in pMEMS. The authors discuss the most exciting developments in the area of materials and devices for the making of piezoelectric MEMS resonators, and offer direct examples of the technical challenges that need to be overcome in order to commercialize these types of devices. Some of the topics covered include: Widely-used piezoelectric materials, as well as materials in which there is emerging interest Principle of operation and design approaches for the making of flexural, contour-mode, thickness-mode, and shear-mode piezoelectric resonators, and examples of practical implementation of these devices Large scale manufacturing approaches, with a focus on the practical aspects associated with testing and qualification Examples of commercialization paths for piezoelectric MEMS resonators in the timing and the filter markets . . . and more! The authors present industry and academic perspectives, making this book ideal for engineers, graduate students, and researchers.

Piezoelectric Materials and Devices: Applications in Engineering and Medical Sciences

by M. S. Vijaya

Starting from the fundamentals, this book provides a concise yet complete treatment of piezoelectric materials, an important class of smart materials which are useful as both actuators and sensors. Including case studies, the text introduces different types of dielectric materials, describes the preparation and properties of various piezoelectric materials used in device applications, and presents various engineering and medical applications of piezoelectric materials. It also discusses in detail the design and virtual prototyping of piezoelectric devices using commercially available software tools like ANSYS and PAFEC.

Piezoelectric Materials: Applications in SHM, Energy Harvesting and Biomechanics (ANE/Athena Books)

by Suresh Bhalla Sumedha Moharana Visalakshi Talakokula Naveet Kaur

Piezoelectric materials are attracting significant research efforts and resources worldwide. The major thrust areas include structural health monitoring, bio-mechanics, bio-medicine and energy harvesting. Engineering and technological applications of this smart material warrants multi-dimensional theoretical and experimental knowledge and expertise in fields of mechanics, instrumentation, digital electronics and information technology, over and above the specific domain knowledge. This book presents, from theory to practice, the application of piezoelectric smart materials in engineering domains such as structural health monitoring (SHM), bio-mechanics, bio-medical engineering and energy harvesting.

Piezoelectric Materials: From Fundamentals to Emerging Applications

by Jiagang Wu

Piezoelectric Materials Analyze the foundational materials of the electronics industry In recent years piezoelectric materials have become one of the world’s most important classes of functional materials. Their ability to convert between mechanical and electrical energy makes them indispensable for sensors, transducers, actuators, catalysts, and many other foundational electronic devices. As electronics industries expand at unprecedented rates, the range of applications for piezoelectric materials continues to grow. Piezoelectric Materials offers a comprehensive overview of this group of materials, its key properties, and its applications. Beginning with the fundamental science of piezoelectric phenomena, it then analyzes different the numerous different classes of piezoelectric materials and their current and future industrial functions. The result is essential for engineers and materials scientists working in any number of areas. Piezoelectric Materials readers will also find: Analysis of materials types include lead-based and lead-free piezoelectric materials, textured piezoceramics, piezoelectric thin films, and many moreDetailed discussion of applications including dielectric energy storage and biomedical technologyAuthorship by a leading researcher of piezoelectric materials Piezoelectric Materials is ideal for materials scientists, electronic engineers, polymer chemists, solid state chemists, and any other researchers or professionals working with these key materials.

Refine Search

Showing 50,126 through 50,150 of 75,581 results