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[null,"1.","Record Nr.",null,"UNINA9910830166003321"]
[null,null,"Autore",null,"Azhari Haim <1955->"]
[null,null,"Titolo",null,"Basics of biomedical ultrasound for engineers / / Haim Azhari"]
[null,null,"Pubbl/distr/stampa",null,"Hoboken, New Jersey : , : Wiley, , [2010]"]
[null,null,"ISBN",null,"1-282-54781-X"]
[{"$nulls":4},"9786612547812"]
[{"$nulls":4},"0-470-56147-5"]
[{"$nulls":4},"0-470-56146-7"]
[null,null,"Descrizione fisica",null,"1 online resource (392 pages)"]
[null,null,"Disciplina",null,"616.0754"]
[null,null,"Soggetti",null,"Ultrasonics in medicine"]
[{"$nulls":4},"Ultrasonics"]
[null,null,"Lingua di pubblicazione",null,"Inglese"]
[null,null,"Formato",null,"Materiale a stampa"]
[null,null,null,"Livello bibliografico","Monografia"]
[null,null,null,"Note generali","Description based upon print version of record."]
[null,null,null,"Nota di bibliografia","Includes bibliographical references and index."]
[null,null,"Nota di contenuto",null,"PREFACE -- ACKNOWLEDGMENTS -- INTRODUCTION -- Prelude and Basic Defi nitions -- The Advantages of Using Ultrasound in Medicine -- A General Statement on Safety -- Some Common Applications of Ultrasound -- What Is It that We Need to Know? -- References -- 1 WAVES-A GENERAL DESCRIPTION -- 1.1 General Defi nitions of Waves-A Qualitative Description -- 1.2 General Properties of Waves-A Qualitative Description -- -- 1.3 Mechanical One-Dimensional Waves -- 1.4 The Wave Function -- 1.5 The Wave Equation -- 1.6 Harmonic Waves -- 1.6.1 Equivalent Presentations -- 1.7 Group Waves -- 1.8 Wave Velocity -- 1.9 Standing Waves (a Mathematical Description) -- 1.10 Spherical Waves -- 1.11 Cylindrical Waves -- 1.12 The Wave Equation in a Nonhomogeneous Medium -- 2 WAVES IN A ONE-DIMENSIONAL MEDIUM -- 2.1 The Propagation Speed of Transverse Waves in a String -- 2.2 Vibration Frequencies for a Bounded String -- 2.3 Wave Refl ection (Echo) in a One-Dimensional Medium -- 2.4 Special Cases -- 2.5 Wave Energy in Strings -- 2.6 Propagation of Longitudinal Waves in an Isotropic Rod or String -- 2.7 A Clinical Application of Longitudinal Waves in a String -- 3 ULTRASONIC WAVES IN FLUIDS -- 3.1 Waves in Fluids -- 3.2 Compressibility -- 3.3. Longitudinal Waves in Fluids -- 3.4 The Wave Energy -- 3.5 Intensity -- 3.6 Radiation Pressure -- 3.7 A Perfect Reflector -- 4 PROPAGATION OF ACOUSTIC WAVES IN SOLID MATERIALS. -- 4.1 Introduction to the Mechanics of Solids -- 4.2 The Elastic Strain -- 4.3 Stress -- 4.4 "]
[{"$nulls":4},"Hooke's Law and Elastic Coefficients -- 4.5 The Wave Equation for an Elastic Solid Material -- 4.6 Propagation of a Harmonic Planar Wave in a Solid Material -- 5 ATTENUATION AND DISPERSION -- 5.1 The Attenuation Phenomenon -- 5.2 Explaining Attenuation with a Simple Model -- 5.3 Attenuation Dependency on Frequency -- 5.4 The Complex Wave Number -- 5.5 Speed of Sound Dispersion -- 5.6 The Nonlinear Parameter B/A -- 6 REFLECTION AND TRANSMISSION -- 6.1 The Acoustic Impedance -- 6.2 Snell's Law."]
[{"$nulls":4},"6.3 Refl ection and Transmission from Boundaries Separating Two Fluids (or Solids with No Shear Waves) -- -- 6.4 Refl ection from a Free Surface in Solids (Mode Conversion) -- 6.5 Refl ection and Transmission from a Liquid- Solid Boundary -- 7 ACOUSTIC LENSES AND MIRRORS -- 7.1 Optics -- 7.2 Optics and Acoustics -- 7.3 An Ellipsoidal Lens -- 7.4 Spherical Lenses -- 7.5 Zone Lenses -- 7.6 Acoustic Mirrors (Focusing Reflectors) -- 8 TRANSDUCERS AND ACOUSTIC FIELDS -- 8.1 Piezoelectric Transducers -- 8.2 The Acoustic Field -- 8.3 The Field of a Point Source -- 8.4 The Field of a Disc Source -- 8.5 The Field of Various Transducers -- 8.6 Phased-Array Transducers -- 8.7 Annular Phased Arrays -- 9 ULTRASONIC IMAGING USING THE PULSE-ECHO TECHNIQUE -- 9.1 Basic Defi nitions in Imaging -- 9.2 The “A-Line” -- 9.3 Scatter Model for Soft Tissues -- 9.4 Time Gain Compensation -- 9.5 Basic Pulse-Echo Imaging (B-Scan) -- 9.6 Advanced Methods for Pulse-Echo Imaging -- 10 SPECIAL IMAGING TECHNIQUES. -- 10.1 Acoustic Impedance Imaging-Impediography -- 10.2 Elastography -- 10.3 Tissue Speckle Tracking -- 10.4 Through-Transmission Imaging -- 10.5 Vibro-acoustic Imaging -- 10.6 Time Reversal -- 10.7 Ultrasonic Computed Tomography -- 10.8 Contrast Materials -- 10.9 Coded Excitations -- References -- 11 DOPPLER IMAGING TECHNIQUES -- 11.1 The Doppler Effect -- 11.2 Velocity Estimation -- 11.3 Frequency Shift Estimation -- 11.4 Duplex Imaging (Combined B-Scan and Color Flow Mapping) -- References -- 12 SAFETY AND THERAPEUTIC APPLICATIONS -- 12.1 Effects Induced by Ultrasound and Safety -- 12.2 Ultrasonic Physiotherapy -- 12.3 Lithotripsy -- 12.4 Hyperthermia HIFU and Ablation -- 12.5 Drug Delivery -- 12.6 Gene Therapy -- 12.7 Cosmetic Applications -- APPENDIX A: TYPICAL ACOUSTIC PROPERTIES OF TISSUES -- -- APPENDIX B: EXEMPLARY PROBLEMS. -- APPENDIX C: ANSWERS TO EXEMPLARY PROBLEMS -- INDEX."]
[null,null,null,"Sommario/riassunto","\"Basics of Biomedical Ultrasound for Engineers is a structured textbook for university engineering courses in biomedical ultrasound and for researchers in the field. This book offers a tool for building a solid understanding of biomedical ultrasound, and leads the novice through the field in a step-by-step manner. The book begins with the most basic definitions of waves, proceeds to ultrasounds in fluids, and then delves into solid ultrasounds, the most complicated kind of ultrasound. It encompasses a wide range of topics within biomedical ultrasound, from conceptual definitions of waves to the intricacies of focusing devices, transducers, and acoustic fields\"--Provided by publisher."]
[null,"2.","Record Nr.",null,"UNINA9910828276203321"]
[null,null,"Autore",null,"Ioinovici Adrian <1950->"]
[null,null,"Titolo",null,"Power electronics and energy conversion systems . Volume 1 Fundamentals and hard-switching converters / / Adrian Ioinovici"]
[null,null,"Pubbl/distr/stampa",null,"Chichester, West Sussex ; ; Hoboken, : John Wiley & Sons, 2012"]
[null,null,"ISBN",null,"1-118-44335-7"]
[{"$nulls":4},"1-118-44304-7"]
[{"$nulls":4},"1-299-44944-1"]
[{"$nulls":4},"1-118-44336-5"]
[null,null,"Edizione",null,"[1st ed.]"]
[null,null,"Descrizione fisica",null,"1 online resource (869 p.)"]
[null,null,"Disciplina",null,"621.31/7"]
[null,null,"Soggetti",null,"Power electronics"]
[{"$nulls":4},"Electric current converters"]
[{"$nulls":4},"Electric circuits"]
[{"$nulls":4},"Switching circuits"]
[null,null,"Lingua di pubblicazione",null,"Inglese"]
[null,null,"Formato",null,"Materiale a stampa"]
[null,null,null,"Livello bibliografico","Monografia"]
[null,null,null,"Note generali","Description based upon print version of record."]
[null,null,null,"Nota di bibliografia","Includes bibliographical references and index."]
[null,null,"Nota di contenuto",null,"Power Electronics and Energy Conversion Systems; Contents; Preface; 1 Introduction; 1.1 Why Energy Conversion Electronics Circuits?; 1.1.1 Applications in the Information and Telecommunication Industry; 1.1.2 Applications in Renewable Energy Conversion; 1.1.3 Future Energy Conversion - Fuel Cells; 1.1.4 Electric Vehicles; 1.1.5 Applications in Electronic Display Devices; 1.1.6 Audio Amplifiers; 1.1.7 Applications in Portable Electronic Devices; 1.1.8 Applications in High Voltage Physics Experiments and Atomic Accelerators; 1.1.9 Lighting Technology; 1.1.10 Aerospace Applications"]
[{"$nulls":4},"1.1.11 Power System Conditioning 1.1.12 Energy Recycling in Manufacturing Industry; 1.1.13 Applications in Space Exploration; 1.1.14 Defense Applications; 1.1.15 Drives and High-Power Industrial Applications; 1.1.16 Classification of Power Electronic Circuits; 1.2 Basic Principles of Operation of a Power Electronics Circuit; 1.3 Basic Components of the Power Circuit: Power Semiconductor Switches and Passive Reactive Elements; 1.3.1 Uncontrollable Switches - Power Diodes; 1.3.2 Semicontrollable Switches (Thyristors); 1.3.3 Controllable Switches; 1.3.3.1 Bipolar Junction Transistor (BJT)"]
[{"$nulls":4},"1.3.3.2 Power Metal Oxide Semiconductor Field-Effect Transistor (MOSFET)1.3.3.3 Insulated Gate Bipolar Transistor (IGBT); 1.3.4 Gallium "]
[{"$nulls":4},"Nitride (GaN) Switch Technology; 1.3.5 Energy Losses Associated with Power Switches; 1.3.5.1 Switching Losses; 1.3.5.2 Off-State Leakage Power Loss; 1.3.5.3 Conduction Power Loss; 1.3.5.4 Gate Drive Power Loss; 1.3.5.5 Heat Sinks; 1.3.5.6 Outline for Choosing a Transistor; 1.3.6 Passive Reactive Elements; 1.3.6.1 Capacitors; 1.3.6.2 Inductors, Transformers, Coupled Inductors; 1.3.7 Ultracapacitors"]
[{"$nulls":4},"1.4 Basic Steady-State Analysis of Duty Cycle Controlled Converters with Constant Switching Frequency 1.4.1 Input-to-Output Voltage Ratio for Basic DC-DC Converters; 1.4.2 Continuous and Discontinuous Conduction Operation Modes; 1.4.3 Design of the Elements of the Basic Converters; 1.4.4 Controller for Duty Cycle Control (PWM); 1.4.5 Conversion Efficiency, Hard-switching and Soft-switching; 1.5 Introduction to Switched-Capacitor (SC) Converters; 1.6 Frequency-Controlled Converters; 1.6.1 Resonant Converters; 1.6.2 Quasi-Resonant Converters (QRC)"]
[{"$nulls":4},"1.7 Overview on AC-DC Rectifiers and DC-AC Inverters 1.7.1 Rectifiers; 1.7.2 Inverters; 1.8 Case Studies; 1.8.1 Case Study 1; 1.8.2 Case Study 2; 1.8.3 Case Study 3; 1.9 Highlights of the Chapter; Problems; Bibliography; 2 Modeling DC-DC Converters; 2.1 What is the Purpose of Modeling the Power Stage?; 2.2 Average State-Space Equations, Small-Ripple Approximation (Time-Linearization); 2.3 DC Voltage Gain and AC Small-Signal Open-Loop Transfer Functions Based on Average State-Space Equations for Converters Operating in Continuous Conduction Mode"]
[{"$nulls":4},"2.3.1 DC Voltage Gain and AC Open-Loop Line-to-Load Voltage Transfer Function"]
[null,null,null,"Sommario/riassunto","Power Electronics and Energy Conversion Systems is a definitive five-volume reference spanning classical theory through practical applications and consolidating the latest advancements in energy conversion technology. Comprehensive yet highly accessible, each volume is organised in a basic-to-sophisticated crescendo, providing a single-source reference for undergraduate and graduate students, researchers and designers.Volume 1 Fundamentals and Hard-switching Converters introduces the key challenges in power electronics from basic components to operation principles and"]