The only introductory text on the market today that explains the underlying physics and engineering applicable to all lasers Although lasers are becoming increasingly important in our high-tech environment, many of the technicians and engineers who install, operate, and maintain them have had little, if any, formal training in the field of electro-optics. This can result in less efficient usage of these important tools. Introduction to Laser Technology, Fourth Edition provides readers with a good understanding of what a laser is and what it can and cannot do. The book explains what types of laser to use for different purposes and how a laser can be modified to improve its performance in a given application. With a unique combination of clarity and technical depth, the book explains the characteristics and important applications of commercial lasers worldwide and discusses light and optics, the fundamental elements of lasers, and laser modification.? In addition to new chapter-end problems, the Fourth Edition includes new and expanded chapter material on: Material and wavelength Diode Laser Arrays Quantum-cascade lasers Fiber lasers Thin-disk and slab lasers Ultrafast fiber lasers Raman lasers Quasi-phase matching Optically pumped semiconductor lasers Introduction to Laser Technology, Fourth Edition is an excellent book for students, technicians, engineers, and other professionals seeking a fuller, more formal introduction to the field of laser technology.
Settled Asbestos Dust Sampling and Analysis compiles the most significant data on asbestos in settled dust. This ready reference presents an analysis of settled dusts and surface particles of all sizes for asbestosthat is useful for qualitative and quantitative assessment and helps to determine the source of fibers. The main scope of this reference includes sample collection, sample analyses, and interpretation of settled dust data, as well as the use of such data for purposes including asbestos abatement projects and in-place management programs. Sections on lead and other particulates are also included.
Patients often present to health care clinics with complaints of sciatica or pain radiating from the back or buttock into the thigh or leg. Frequently, the patient has a lumbar or sacral radiculopathy caused by a degenerative etiology, however, there are many possible causes for these symptoms. This text utilizes almost 600 references to fully explore the many causes of and mimics of radiculopathy of the lumbar and sacral spine. This book details the clinical features that help distinguish a degenerative etiology of lumbosacral radiculopathy from other categories, such as vascular (e.g. aortic aneurysm, epidural hematoma), infection (e.g. spondylodiscitis, shingles), and tumor (e.g. spinal metastasis, schwannoma). Each section includes: An estimation of the frequency of the condition as a cause or mimic of LSR (when possible), pathophysiological mechanisms that cause neurological deficit or pain, possible distinguishing clinical features, distinguishing imaging and/or laboratory tests, and examples of misdiagnoses or challenging cases. Summary lists are generated that include various historical and physical findings with a differential diagnosis of conditions to consider.
This book summarizes research about sciatica for clinicians such as chiropractors, physical therapists, primary care providers, osteopaths, and physiatrists. Well-informed patients will also benefit from reading this book. This book uses thousands of references, hundreds of images, original illustrations, and case studies to review mechanisms of pain, examination techniques, and treatment of sciatica. While the focus is on non-pharmaceutical and minimally invasive treatments, this book also reviews the indications for more invasive procedures. Each chapter also includes a historical review dating back decades or centuries, which puts the newer treatments in perspective.In this book you will learn: What is sciatica and does it always relate to the spine? What common features occur in most cases of sciatica? Has our concept of what causes sciatica changed over time? What does it mean when symptoms are above the knee or below the knee? Can imaging help determine if disc lesions are causing symptoms? Does sciatica mean you are just getting old? What mechanisms allow disc herniations to heal? What percentage of cases of sciatica typically require surgery? What are the most effective non-pharmaceutical treatments for sciatica? What vitamins and natural substances are beneficial for sciatica?
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