Author: Publisher: Odile Jacob
ISBN: 2738188389
Category :
Languages : en
Pages : 303
Book Description
Author: Publisher: Odile Jacob
ISBN: 2738188389
Category :
Languages : en
Pages : 303
Book Description
Operative Technique in Neonates and Infants
Author: Thomas A. AngerpointnerPublisher: Springer Science & Business Media
ISBN: 3642877079
Category : Medical
Languages : en
Pages : 150
Book Description
In conventional partial resection of parenchymatous organs significant bleeding is one of the main problems, especially in neonates and infants. The patients rapidly lose considerable amounts of their small blood volume. Laser light leads to photo thermal effects in tissue and causes coagulation, drying up, carbonization and evaporization, depending on the temperature. The neodymium Y AG laser emits nonvisible light in the near infrared with a wavelength of l. 0611m. This wavelength implies a relatively deep penetration into the tissue. This laser system, properly a coagulation laser, achieves its cutting effect by its high power density [9]. Because of thermal radiation in all directions, both sides of the section plane are coagulated as a positive side effect. Thus, in parenchymatous organs a combination of resection and sealing of the cut vessels and ducts, up to a limited diameter, is obtained. Laser Instruments We use a neodymium-YAG laser mediLas 2 (MBB-Medizintechnik, D-8012 Ottobrunn, Federal Republic of Germany), wavelength l. 0611m, maximal power output around 110 W (Fig. 1). Normally we prefer to work without tissue contact, Fig. l. The Nd-YAG laser system mediLas 2 with maximal power output around 100 W The Neodymium Y AG Laser in Surgery of Parenchymatous Organs 25 Fig. 2. The focusing handpiece with focal distance of 50 mm 1cm Fig. 3.
Laser Ultrasonics Techniques and Applications
Author: L.E DrainPublisher: Routledge
ISBN: 1351435582
Category : Science
Languages : en
Pages : 470
Book Description
The first book devoted to laser techniques in the generation and reception of ultrasonic waves in materials, Laser Ultrasonics: Techniques and Applications provides a full description of the state of the art in all fields involving both lasers and ultrasonics. This practical book focuses mainly on the possible applications of the techniques, yet th
Lasers
Author: Jean-Claude DielsPublisher: John Wiley & Sons
ISBN: 3527410392
Category : Science
Languages : en
Pages : 278
Book Description
"Lasers" are active ingredients of our modern life, but they are inconspicuous as they often go unnoticed. This intuitive introductory guide will tell you all you want to know about laser technologies in very diverse fields from nuclear and particle physics to medicine, astronomy and ultra-precise metrology. The book is coherently focused on fundamentals, and is aimed to stimulate intuition about present and future applications, while unveiling the halo of myths around lasers. Written by reputable laser experts who think that science should be entertaining, this useful reference relies on simple analogies and illustrations rather than complex mathematics, and will be suitable for students and end-users of laser technologies, including novices. Voted a CHOICE Outstanding Academic Title 2012
Ultra-Fast Fiber Lasers
Author: Le Nguyen BinhPublisher: CRC Press
ISBN: 143981130X
Category : Science
Languages : en
Pages : 438
Book Description
Ultrashort pulses in mode-locked lasers are receiving focused attention from researchers looking to apply them in a variety of fields, from optical clock technology to measurements of the fundamental constants of nature and ultrahigh-speed optical communications. Ultrashort pulses are especially important for the next generation of ultrahigh-speed optical systems and networks operating at 100 Gbps per carrier. Ultra Fast Fiber Lasers: Principles and Applications with MATLAB® Models is a self-contained reference for engineers and others in the fields of applied photonics and optical communications. Covering both fundamentals and advanced research, this book includes both theoretical and experimental results. MATLAB files are included to provide a basic grounding in the simulation of the generation of short pulses and the propagation or circulation around nonlinear fiber rings. With its unique and extensive content, this volume— Covers fundamental principles involved in the generation of ultrashort pulses employing fiber ring lasers, particularly those that incorporate active optical modulators of amplitude or phase types Presents experimental techniques for the generation, detection, and characterization of ultrashort pulse sequences derived from several current schemes Describes the multiplication of ultrashort pulse sequences using the Talbot diffraction effects in the time domain via the use of highly dispersive media Discusses developments of multiple short pulses in the form of solitons binding together by phase states Elucidates the generation of short pulse sequences and multiple wavelength channels from a single fiber laser The most practical short pulse sources are always found in the form of guided wave photonic structures. This minimizes problems with alignment and eases coupling into fiber transmission systems. In meeting these requirements, fiber ring lasers operating in active mode serve well as suitable ultrashort pulse sources. It is only a matter of time before scientists building on this research develop the practical and easy-to-use applications that will make ultrahigh-speed optical systems universally available.
Current Catalog
Author: National Library of Medicine (U.S.)Publisher:
ISBN:
Category : Medicine
Languages : en
Pages : 1160
Book Description
First multi-year cumulation covers six years: 1965-70.
Appareillages de pratique esthétique (2e ed.)
Author: MARTINI Marie-ClaudePublisher: Lavoisier
ISBN: 2743064625
Category :
Languages : en
Pages : 322
Book Description
Les appareillages utilisés pour les soins esthétiques sont extrêmement nombreux. Se repérer dans le large éventail d’articles proposés par les fabricants n’est pas chose aisée, d’autant moins que les notices sont souvent très succintes quant au mode de fonctionnement et aux divers accessoires qui composent les appareils. Cet ouvrage a été le premier à présenter un panorama complet de ces appareils. Ce domaine évoluant très vite, cette nouvelle édition s’est enrichie des nouveautés du marché et demeure un outil sans équivalent tant par son approche pratique que par ses qualités pédagogiques. Afin d’être didactique et de permettre aux lecteurs de trouver rapidement l’information recherchée, les appareillages sont largement illustrés, classés selon leur principe de fonctionnement et présentés selon le même plan : description, principe de fonctionnement, mode d'action, indications, utilisation, précautions d'emploi, entretien, avantages et inconvénients. Des rappels généraux de physique aident à la compréhension des divers systèmes évoqués. Cette nouvelle édition s’enrichit des nouveaux appareillages issus des récentes techniques de rajeunissement, de remodelage du corps, d’amincissement, d’examen de la peau et d’épilation. De plus, un chapitre consacré à la législation présente les nouvelles normes et recommandations en la matière. Appareillages de pratique esthétique ne se limite pas aux exigences des différents diplômes et enseignements de l’esthétique-cosmétique : il englobe les nouveautés techniques présentes sur le marché qui doivent être connues des spécialistes. Cet ouvrage a été conçu pour les étudiants et enseignants en CAP et BTS esthétique - cosmétique, et les professionnels de l'esthétique et médecins.
Principles and Practice of Lasers in Otorhinolaryngology and Head and Neck Surgery
Author: V. Oswal Publisher: Kugler Publications
ISBN: 9062992323
Category : Medical
Languages : en
Pages : 951
Book Description
Foreword In this era's informational paradigm, while pondering the considerations to be penned in this foreword, the relevance of a text such as this emerged progressively as the focal point. After all, for years, one established source for accessing large amounts of valuable information had been the Encyclopaedia Britannica, a printed tome, which is no longer relevant. Instant access to the latest scientific information is freely available to all with an internet. So, what can this text provide that cannot be readily accessed? In contemplating given topics, the Editors, as most certainly occurred in this publication, chose clinical authorities to author chapters in their areas of expertise. The experienced clinician often finds such a forum a unique opportunity to reflect on years of knowledge acquisition and then render an insightful discourse on the lineage of his/her current understanding of the topic. On the other side of the coin, the reader instantly acquires a knowledge base, which was validated with an exhaustive literature search and gains the senior authors' perspective of it. A less experienced author will benefit from thoroughly reviewing the currently available science and technology and moreover, gain experience in scientific writing. In the latter scenario the senior author is at once mentor and expert. Under ordinary circumstances, from the concept outline submission to a publisher, the time line to completion of the text is approximately one and a half to two years. Recruiting and assigning authors, awaiting late manuscript submissions and editing are unquestionably time consuming. Yet a passionate, dedicated Editor will take seemingly varied submissions and script them into a worthy finished product. Such was the case with this publication. The end result is a superbly structured text covering most of the concepts relating to the topic in a format that is both logical and intuitive. At the risk of some redundancy, I share with you my thoughts on some of the significant number of new additions and improvements made to this second edition. The chapter on risk management is a welcome contribution. The rationale for the shift in the current decision tree for laryngeal cancer as it relates to macro versus micro margins, improvements in voice quality and the choice of initial therapeutic considerations are appropriately vetted. The rethinking of HPV associated malignancies is a new and most important addition. Zeitels' presentation of angiolytic lasers for benign and malignant pathology is state of the art. I particularly enjoyed reading about lasers and the association with tropical diseases. The chapters on robotic surgery, non-invasive cartilage reshaping and photo-diagnostics puts the latest technical innovation in our discipline into perspective. The excellent illustrations and photographs are a bonus. There are other areas that could be mentioned e.g. paediatrics, however, the aforementioned has more than adequately established the tenor of the text. n their quest to provide a one-stop knowledge base of a reference quality, it is inescapable that the size of the final proof would surpass the typical numbers of between four and five hundred pages for the hard bound volume. Tightening the text by removing some peripheral material would deprive the book its very objective of a reference quality publication. The obvious solution was to present the work in a set of two volumes, and the editors and the publishers have to be congratulated in achieving this seamlessly. The natural anatomical split provides the reader with a convenience of picking up the volume of relevance for the task at hand. An unusual feature is the inclusion of MCQs after each chapter, to serve as a test for recall of knowledge, the result of which can be assessed simply by going back to the chapter! The Editors and the publishers have exploited the now ubiquitous electronic media network to their advantage. Operating on various platforms a dedicated website will complement the book with updates, operative videos, and means of communication to share the knowledge globally. It was the focus of this brief foreword to explore the relevance of this text in the current informational climate. It provides the essential foundation for informed thought on this topic. Agree or disagree with the information contained within, the reader has acquired the knowledge to be able to do such. With this text you will be rewarded for sitting in your most comfortable chair, thumbing through the pages and sensing the new print. Immediately understood will be the time and effort it took to complete a text of this calibre. Read the chapters first that initially appeal to you and then without question you will read the remainder. This book should be in the library of any serious student of the subject. I feel privileged to have been asked to write the foreword. Marshall Strome
Advances in Nd:YAG Laser Surgery
Author: Stephen N. JoffePublisher: Springer Science & Business Media
ISBN: 1461237289
Category : Medical
Languages : en
Pages : 382
Book Description
The Nd:YAG laser has finally become the multidisciplinary and muitispeciaity tool of the 1980s. Primarily developed for gastrointestinal applications for controlling bleeding, at present it is also used for endoscopic treatment of gastrointestinal tumors, endobronchial cancer, and bladder and gynecological lesions and finding applications in otorhinolaryngology and neurosurgery. De velopment of laser scalpels and focusing head-pieces has now allowed the Nd:YAG laser to be used for open surgical procedures in general and plastic surgery, head and neck surgery, urology, gynecology, dermatology, and neu rosurgery. The rapid development in ceramic technology has led to contact surgery allowing physicians a choice of excision, vaporization, coagulation, incision, or combinations thereof by easily changing probes rather than having to select new laser wavelengths. This technology is rapidly replacing the carbon dioxide laser which currently has no adequate flexible waveguide for fiberoptic en doscopy, cannot be used in a water medium (e.g., bladder), and has poor coagulation properties when compared to the Nd:YAG laser. Future developments may see the Nd:YAG laser even replacing electro cautery in the operating room due to its greater safety and efficacy. Local hyperthermia (laserthermia) with computer control, photodynamic therapy, and ophthalmic applications make the Nd:YAG laser the most exciting tech nological advancement in medicine and surgery for the 1980s.
ACB
Author: Publisher:
ISBN:
Category : Surgery
Languages : en
Pages : 460
Book Description
Issues for 1950-51 include Acta Anaesthesiologica Belgica, 1-2 Année.
