This book should be of interest to students of animal ecology; ecology.

This expert volume in the Diagnostic Pathology series is an excellent point-of-care resource for practitioners at all levels of experience and training. Covering all areas of nonneoplastic pediatric pathology, it incorporates the most recent clinical, pathologic, and molecular knowledge in this challenging field to provide a comprehensive overview of all key issues relevant to today's practice. Richly illustrated and easy to use, Diagnostic Pathology: Nonneoplastic Pediatrics is a one-stop reference for accurate, complete pathology reports, ideal as a day-to-day reference for both pediatric and general pathologists or as a reliable training resource. Provides a clear framework for a better understanding of the clinical and histopathologic appearances of more than 270 nonneoplastic entities, covering every organ system with a focus on reactive, infectious, congenital, and genetic conditions Covers significant advances in this complex field, including recent molecular discoveries and updated disease entities, new information on multiple immunologic disorders, changes and expansions to several classification systems (such as WHO, Banff, and ISSVA), and updates in other scoring systems Contains new chapters on manifestations of pediatric COVID-19 infection, tumoral calcinosis, multiple skeletal dysplasia, skeletal muscle, collagenous gastritis and colitis, adenovirus appendicitis, intestinal pseudoobstruction, disorders of sexual development, and Kikuchi disease Includes approximately 3,000 high-quality clinical and histologic images, gross pathology images, radiologic images, and full-color illustrations to help practicing and in-training pathologists reach a confident diagnosis-as well as nearly 200 additional images online Employs consistently templated chapters and bulleted content for quick, expert reference at the point of care Includes an eBook version that enables you to access all text, figures, and references, with the ability to search, customize your content, make notes and highlights, and have content read aloud

This book should be of interest to students of animal ecology; ecology.

What could be regarded as the beginning of a theory of commutators AB - BA of operators A and B on a Hilbert space, considered as a dis cipline in itself, goes back at least to the two papers of Weyl [3] {1928} and von Neumann [2] {1931} on quantum mechanics and the commuta tion relations occurring there. Here A and B were unbounded self-adjoint operators satisfying the relation AB - BA = iI, in some appropriate sense, and the problem was that of establishing the essential uniqueness of the pair A and B. The study of commutators of bounded operators on a Hilbert space has a more recent origin, which can probably be pinpointed as the paper of Wintner [6] {1947}. An investigation of a few related topics in the subject is the main concern of this brief monograph. The ensuing work considers commuting or "almost" commuting quantities A and B, usually bounded or unbounded operators on a Hilbert space, but occasionally regarded as elements of some normed space. An attempt is made to stress the role of the commutator AB - BA, and to investigate its properties, as well as those of its components A and B when the latter are subject to various restrictions. Some applica tions of the results obtained are made to quantum mechanics, perturba tion theory, Laurent and Toeplitz operators, singular integral trans formations, and Jacobi matrices.

Diagnostic Pathology: Pediatrics offers expert guidance on over 170 of the most important benign and malignant pediatric neoplasm diagnoses. This 860-page book is divided into 16 sections that encompass every major organ system covering all the important pediatric neoplasms. Each chapter covers the main clinical, gross, and microscopic features in a systematic way that allows the pathologist to quickly arrive at the correct diagnosis. Unique to this book are the image galleries. Most textbooks include a limited number of images of the more common diagnoses (usually only one or two images), but this book includes a minimum of at least 5 images per diagnosis. Overall, the book includes over 2,431 stunning pathologic and radiographic images, along with several high-color medical illustrations. Each image is carefully annotated to highlight the elements that are most diagnostically significant. Many of the diagnoses discussed in this book contain images from entities in the differential diagnosis that allow for easy and quick comparisons when considering more than one diagnosis. In addition, ancillary techniques such as immuno histochemistry, molecular, and cytology are included for those neoplasms that may require other techniques in their work up. Lastly, this book features the classic benefits of all Amirsys[registered] titles, including time-saving bulleted text, Key Facts in each chapter, stunning annotated images, extensive index, and Amirsys eBook Advantage[trademark], an online version of the print book with larger images and fully searchable text.