Indochinese Refugees PDF Download

Author:
Publisher:
ISBN:
Category : International relief
Languages : en
Pages : 2

View

Book Description

Author: Douglas Self
Publisher: Taylor & Francis
ISBN: 1136123814
Category : Technology & Engineering
Languages : en
Pages : 1293

View

Book Description
This book is essential for audio power amplifier designers and engineers for one simple reason...it enables you as a professional to develop reliable, high-performance circuits. The Author Douglas Self covers the major issues of distortion and linearity, power supplies, overload, DC-protection and reactive loading. He also tackles unusual forms of compensation and distortion produced by capacitors and fuses. This completely updated fifth edition includes four NEW chapters including one on The XD Principle, invented by the author, and used by Cambridge Audio. Crosstalk, power amplifier input systems, and microcontrollers in amplifiers are also now discussed in this fifth edition, making this book a must-have for audio power amplifier professionals and audiophiles.

Author: Herbert Lieberman
Publisher: CRC Press
ISBN: 1000148416
Category : Medical
Languages : en
Pages : 558

View

Book Description
Stressing the theory involved in formulating suspensions, emulsions, and colloidal drug products, this Second Edition of a well-received reference test highlights typical formulations, the avoidance of formulation pitfalls, and compliance with established regulatory principles.

Author: Walter W. Tunnessen
Publisher: Lippincott Williams & Wilkins
ISBN:
Category : Medical
Languages : en
Pages : 728

View

Book Description

Author: Douglas Self
Publisher: Taylor & Francis
ISBN: 1136111891
Category : Technology & Engineering
Languages : en
Pages : 606

View

Book Description
The Design of Active Crossovers is a unique guide to the design of high-quality circuitry for splitting audio frequencies into separate bands and directing them to different loudspeaker drive units specifically designed for handling their own range of frequencies. Traditionally this has been done by using passive crossover units built into the loudspeaker boxes; this is the simplest solution, but it is also a bundle of compromises. The high cost of passive crossover components, and the power losses in them, means that passive crossovers have to use relatively few parts. This limits how well the crossover can do its basic job. Active crossovers, sometimes called electronic crossovers, tackle the problem in a much more sophisticated manner. The division of the audio into bands is performed at low signal levels, before the power amplifiers, where it can be done with much greater precision. Very sophisticated filtering and response-shaping networks can be built at comparatively low cost. Time-delay networks that compensate for phyical misalignments in speaker construction can be implemented easily; the equivalent in a passive crossover is impractical because of the large cost and the heavy signal losses. Active crossover technology is also directly applicable to other band-splitting signal-processing devices such as multi-band compressors. The use of active crossovers is increasing. They are used by almost every sound reinforcement system, by almost every recording studio monitoring set-up, and to a small but growing extent in domestic hifi. There is a growing acceptance in the hifi industry that multi-amplification using active crossovers is the obvious next step (and possibly the last big one) to getting the best possible sound. There is also a large usage of active crossovers in car audio, with the emphasis on routing the bass to enormous low-frequency loudspeakers. One of the very few drawbacks to using the active crossover approach is that it requires more power amplifiers; these have often been built into the loudspeaker, along with the crossover, and this deprives the customer of the chance to choose their own amplifier, leading to resistance to the whole active crossover philosophy. A comprehensive proposal for solving this problem is an important part of this book. The design of active crossovers is closely linked with that of the loudspeakers they drive. A chapter gives a concise but complete account of all the loudspeaker design issues that affect the associated active crossover. This book is packed full of valuable information, with virtually every page revealing nuggets of specialized knowledge never before published. Essential points of theory bearing on practical performance are lucidly and thoroughly explained, with the mathematics kept to an essential minimum. Douglas' background in design for manufacture ensures he keeps a wary eye on the cost of things. Features: Crossover basics and requirements The many different crossover types and how they work Design almost any kind of active filter with minimal mathematics Make crossover filters with very low noise and distortion Make high-performance time-delay filters that give a constant delay over a wide range of frequency Make a wide variety of audio equaliser stages: shelving, peaking and notch characteristics All about active crossover system design for optimal noise and dynamic range There is a large amount of new material that has never been published before. A few examples: using capacitance multipliers in biquad equalisers, opamp output biasing to reduce distortion, the design of NTMTM notch crossovers, the design of special filters for filler-driver crossovers, the use of mixed capacitors to reduce filter distortion, differentially elevated internal levels to reduce noise, and so on. Douglas wears his learning lightly, and this book features the engaging prose style familiar from his other books The Audio Power Amplifier Design Handbook, Self on Audio, and the recent Small Signal Audio Design.

Author: Young Adult Conservation Corps (U.S.)
Publisher:
ISBN:
Category :
Languages : en
Pages : 6

View

Book Description

Author: Walter F. Boron
Publisher: Elsevier Health Sciences
ISBN: 1455711810
Category : Medical
Languages : en
Pages : 1351

View

Book Description
Medical Physiology, in its updated 2nd edition, firmly relates molecular and cellular biology to the study of human physiology and disease. Drs. Walter Boron and Emile Boulpaep and a team of leading physiologists present you with practical, accurate coverage, continually emphasizing the clinical implications of the material. Each chapter explains the principles and organization of each body system, while more than 1400 high-quality, full-color line drawings and prominently featured clinical examples clarify every concept. This exceptionally detailed and comprehensive guide to physiology is ideal for a rich, straightforward, state-of-the-art understanding of this essential subject. Quickly review important content using prominent boxes included throughout the text to provide clinical examples of disordered physiology. Master difficult concepts with the use of 800 color drawings that feature balloon captions explaining key processes. Find information easily with the intuitive organization by body system and consistent style. Get up-to-date coverage of physiology with updated text and figures. Access the fully searchable text online at www.StudentConsult.com, along with Webnotes, Image Bank, 150 Self-assessment questions, and 10 physiology animations. Stay current thanks to updated material, including a new chapter on Physiology of Aging and a new section on hemostasis. Gain a clear visual understanding with a revised and updated art program of high-quality, full color line drawings and prominently featured clinical examples.

Author: Joseph E. Muscolino
Publisher: Mosby
ISBN:
Category : Medical
Languages : en
Pages : 866

View

Book Description
A full-color atlas of the muscles of the human body, this text provides in-depth coverage of skeletal muscles. An easy-to-understand format organizes the material by body region, moving from head to extremities. For each region, there is an overview of the muscles of the region as a whole, with information on how muscles in that region function together and large drawings of the muscles of that entire region. Then each particular muscle in that region is described with name, the origin of that name, Greek and Latin derivations, pronunciation, attachments, actions, a drawing with an arrow showing the muscle's line of pull, innervation to two levels of detail, and arterial supply to two levels of detail. That overview is followed by a practical, step-by-step guide to palpating that muscle, a group muscle illustration to show the muscle's anatomical relationship to nearby muscles, the methodology for learning muscle actions, and clinically useful information for that muscle. Instructor's resources available.

Author: Mårten T. Landahl
Publisher: Courier Dover Publications
ISBN: 0486832775
Category : Science
Languages : en
Pages : 147

View

Book Description
This classic monograph on unsteady transonic flow — the flow of air encountered at speeds at or near the speed of sound — is of continuing interest to students and professionals in aerodynamics, fluid dynamics, and other areas of applied mathematics. After a brief Introduction, Swedish physicist Mårten T. Landahl presents a chapter in which the two-dimensional solution is derived, succeeded by a discussion of its relation to the subsonic and supersonic solutions. Three chapters on low aspect ratio configurations follow, covering triangular wings and similar planforms with curved leading edges, rectangular wings, and cropped delta wings, and low aspect ratio wing-body combinations. The treatment concludes with a consideration of the experimental determination of air forces on oscillating wings at transonic speeds.

Author: The Editors of REA
Publisher: Research & Education Assoc.
ISBN: 0738671045
Category : Business & Economics
Languages : en
Pages : 130

View

Book Description
REA’s Essentials provide quick and easy access to critical information in a variety of different fields, ranging from the most basic to the most advanced. As its name implies, these concise, comprehensive study guides summarize the essentials of the field covered. Essentials are helpful when preparing for exams, doing homework and will remain a lasting reference source for students, teachers, and professionals. Microeconomics includes the fundamentals of supply and demand, consumer theory, production, perfect competition, the monopoly, and factor prices.