Download or read book International Congress on Advanced Surface Ablation SBK written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Refractive Surgery written by and published by . This book was released on 2008 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Temper Sands in Prehistoric Oceanian Pottery written by William R. Dickinson and published by Geological Society of America. This book was released on 2006-01-01 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Oceanian ceramic cultures making earthenware pottery spread during the past 3500 years through a dozen major island groups spanning 6000 km of the tropical Pacific Ocean from western Micronesia to western Polynesia. Island potters mixed sand as temper into clay bodies during ceramic manufacture. The nature of island sands is governed by the geotectonics of hotspot chains, island arcs, subduction zones, backarc basins, and remnant arcs as well as by sedimentology. Because small islands with bedrock exposures of restricted character are virtual point sources of sand, many tempers are diagnostic of specific islands. Petrographic study of temper sands in thin section allows distinction between indigenous pottery and exotic pottery transported from elsewhere. Study of 2223 prehistoric Oceanian potsherds from 130 islands and island clusters indicates the nature of Oceanian temper types and documents 105 cases of interisland transport of ceramics over distances typically
Download or read book Hydrogeology Chemical Weathering and Soil Formation written by Allen Hunt and published by John Wiley & Sons. This book was released on 2021-04-06 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explores soil as a nexus for water, chemicals, and biologically coupled nutrient cycling Soil is a narrow but critically important zone on Earth's surface. It is the interface for water and carbon recycling from above and part of the cycling of sediment and rock from below. Hydrogeology, Chemical Weathering, and Soil Formation places chemical weathering and soil formation in its geological, climatological, biological and hydrological perspective. Volume highlights include: The evolution of soils over 3.25 billion years Basic processes contributing to soil formation How chemical weathering and soil formation relate to water and energy fluxes The role of pedogenesis in geomorphology Relationships between climate soils and biota Soils, aeolian deposits, and crusts as geologic dating tools Impacts of land-use change on soils The American Geophysical Union promotes discovery in Earth and space science for the benefit of humanity. Its publications disseminate scientific knowledge and provide resources for researchers, students, and professionals. Find out more about this book from this Q&A with the Editors
Download or read book Corneal Biomechanics written by C.J. Roberts and published by Kugler Publications. This book was released on 2017-05-15 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: While lecturing in recent months at a number of prominent institutions, I asked some of the residents and fellows whether and how they might benefit from a book on corneal biomechanics. The typical response was the look of a deer caught in the headlights as they tried to intuit the “appropriate” answer, but had little understanding or insight as to why this would be an important and useful knowledge base for them now, or in the future. I then posed the question differently. “Would a book that explained corneal biomechanical principles and testing devices and their application in detecting eyes at risk for developing keratoconus and post-LASIK ectasia, understanding the biomechanical impact of specific types of keratorefractive surgery and riboflavin UV-A corneal collagen cross-linking, and the impact of corneal biomechanics on the fidelity of intraocular pressure measurement and risk for glaucoma progression be of interest?” Framed in this context, the answer I got was a resounding, “Yes!” Therein lies a fundamental disconnect that highlights both the opportunity and need to educate all ophthalmologists about this nascent field. This comprehensive book is strengthened by the breadth of contributions from leading experts around the world and provides an important resource for ophthalmologists at all levels of training and experience. It gives a panoramic snapshot of our understanding of corneal biomechanics today, bridging the gap between theoretical principles, testing devices that are commercially available and in development as well as current and potential future clinical applications. While there has been a long-held appreciation that all types of keratorefractive surgery have an impact and interdependence on corneal biomechanics and wound healing, the initial finite element analyses that were applied to understand radial keratotomy were limited by incorrect assumptions that the cornea was a linear, elastic, homogenous, isotropic material.1 With the advent of excimer laser vision correction, critical observations indicated that Munnerlyn’s theoretic ablation profiles did not account for either lower or higher order (e.g. spherical aberration) refractive outcomes,2 suggesting that there were important components missing from the equation—e.g., corneal biomechanics and wound healing. In a seminal editorial, Roberts3 pointed out that the cornea is not a piece of plastic, but rather a material with viscoelastic qualities. Since that time, much has been learned about spatial and depth- related patterns of collagen orientation and interweaving, as well as the biomechanical response to different keratorefractive surgeries that sever tension-bearing lamellae, as the cornea responds to and redistributes stress induced by IOP, hydration, eye rubbing, blinking and extraocular muscle forces.3-6 The first reports of post-LASIK ectasia7 highlighted the need to identify a biomechanical signature of early keratoconus as well as corneas at high risk of developing ectasia irrespective of their current topography or tomography. The introduction of two instruments into clinical use—the Ocular Response Analyzer (ORA) and the Corneal Visualization Scheimpflug Technology (Corvis ST)—that allow measurement of various biomechanical metrics further catapulted the field. The availability of these instruments in routine clinical settings allowed the systematic study of the effect of age, collagen disorders, collagen cross-linking, corneal rings, flaps of various depths, contour, sidecut angulation, pockets, and flockets, just to name of few. Future application of biomechanics to the sclera may improve our understanding of the development and prevention of myopia, as well as scleral surgeries and treatments under development for presbyopia. It was appreciated by Goldmann and Schmidt that corneal thickness and curvature would influence the measurement of applanation tonometry. The recent ability to measure some corneal biomechanical metrics have led to IOP measurement that may be more immune both to their influence and the impact of central corneal thickness (CCT). Certain chapters in this book explain how a thin cornea could be stiffer than a thick one and that stiffness is also impacted by IOP, thereby precluding simplistic attempts to adjust IOP measurements using nomograms based upon CCT alone. Also highlighted is how corneal hysteresis, the ability of the cornea to absorb and dissipate energy during the bidirectional applanation response to a linear Gaussian air puff, appears to be an independent risk factor for glaucoma progression and rate of progression.9,10 This comprehensive book starts out with a section devoted to outlining basic biomechanical principles and theories, teaching us the language of what Dupps11 has referred to as “mechanospeak”, thus providing a context and common vocabulary to better comprehend the following chapters. By first defining basic concepts such as stress-strain relationships and creep, this theoretical basis is later applied to explain the pathogenesis of corneal diseases, e.g., explaining how a focal abnormality in corneal biomechanical properties precipitates a cycle of decompensation and localized thinning and steepening, clinically expressed as ectasia progression. These early chapters further detail biomechanical differences between in-vivo and ex-vivo testing, between human and animal corneas and sclera, and between methods of testing. The second section provides a thorough description of two FDA-approved devices to measure corneal biomechanics in the clinic (i.e., the ORA and the Corvis ST), as well as an overview of potential future technologies, including OCT with air puff stimulus, ocular pulse elastography, and Brilloiun microscopy. The third and final section of the book is a thorough treatise on how to interpret the metrics derived from the waveform provided by available clinical devices; their adjunct use in ectasia risk screening; the comparative biomechanical impact of various keratorefractive surgeries and corneal procedures such as PRK, LASIK, SMILE, and corneal collagen cross-linking; the impact of corneal biomechanics on IOP measurement; and potential biomechanical markers of enhanced susceptibility to glaucoma progression. This compendium of our current knowledge of corneal biomechanics, its measurement and application, provides a strong foundation to more fully understand advances in keratorefractive and corneal surgery, diseases, and treatments, all of which are interdependent on and influence inherent corneal biomechanical properties and behavior. Both the robust aspects and limitations of our current understanding are presented, including the challenge of creating accurate and predictive finite element models that incorporate the impact of IOP, corneal thickness, geometry, and scleral properties on corneal biomechanics. This book provides a key allowing clinical ophthalmologists and researchers to grasp the basics and nuances of this exciting field and to shape it as it evolves in the future.
Download or read book The Two Selves written by Stanley B. Klein and published by Oxford University Press. This book was released on 2014 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our experience of a unified sense of the self is underwritten by a multiplicity of self-aspects having very different metaphysical commitments. Our experience of unity is provided by a process-which, under certain clinical conditions, is rendered inoperative-that enables a person to experience mental states as personally owned.
Download or read book Space Age Acronyms written by Reta C. Moser and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt: Acronym agglomeration is an affliction of the age, and there are acronym addicts who, in their weakness, find it impossible to resist them. More than once in recent months my peers have cautioned me about my apparent readiness to use not only acronyms, but abbreviations, foreign isms, codes, and other cryptic symbols rather than common, ordinary American words. Many among us, though, either have not received or have chosen to ignore such advice. As a consequence, what we write and speak is full of mystery and confusion. It is then for the reader and listener and for the writer and speaker that Reta C. Moser has compiled this guide. Its effective application to the art of communication is urged. Such use should help avoid many of the misunderstandings involving terminology which occur daily. Although such misunderstandings are certainly crucial in humanistic and social situations, they are often of immediate import and the trigger to disaster in scientific, technical, and political situations. Some 15,000 acronyms and 25,000 definitions are provided (a 50- and 47 -percent increase over the 1964 edition!), with due credit to Miss Moser's diligence in making the compilation and with the acknowledgment that the acronymical phenomenon is very much with us. This edition, like the first, is certain to be of value to writers, librarians, editors, and others who must identify and deal with acronyms.
Download or read book Pearls in Glaucoma Therapy written by Dada Tanuj and published by JP Medical Ltd. This book was released on 2011-08 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: The text in the book outlines the scientific theories on the causation of glaucoma, incorporates the risk factors for disease and includes a detailed insight into the work up of glaucoma patients including both basic tests like gonioscopy/optic nerve head evaluation and advanced investigations of structure and function like the optical coherence tomography (OCT), glaucoma diagnosis (GDx) and Heidelberg retina tomography (HRT).
Download or read book Evolution of Extracellular Matrix written by Fred W. Keeley and published by Springer Science & Business Media. This book was released on 2013-03-15 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: The evolution of single cells into multicellular organisms was mediated, in large part, by the extracellular matrix. The proteins and glycoconjugates that make up the extracellular matrix provide structural support to cellular complexes, facilitate cell adhesion and migration, and impart mechanical properties that are important for tissue function. Each class of ECM macromolecule has evolved to incorporate distinctive properties that are defined by conserved modules that are mixed together to achieve appropriate function. This volume provides a comprehensive analysis of how the major ECM components evolved over time in order to fill their specific roles found in modern organisms. The major focus is on the structural matrix proteins, matricellular proteins, and more complex ECM structures such as basement membranes. Adhesive proteins and their receptors are also discussed.
Download or read book Spectrochemical Analysis written by James D. Ingle and published by . This book was released on 1988 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Sr/Grad-level text on analytical spectrometric methods. Emphasizes general principles and quantitative expressions for signals and signal-to-noise ratio. Instrumentation methodology and performance characteristics for all major optical, atomic, and molecular techniques are discussed.
Download or read book Before Siam written by Nicolas Revire and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents new research and discoveries to reconstruct the cultures, religious persuasions and artistic traditions in pre-modern Thailand and its neighboring regions.
Download or read book Dynamics of Complex Intracontinental Basins written by Ralf Littke and published by Springer Science & Business Media. This book was released on 2008-08-11 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sedimentary basins host, among others, most of our energy and fresh-water resources: they can be regarded as large geo-reactors in which many physical and chemical processes interact. Their complexity can only be well understood in well-organized interdisciplinary co-operations. This book documents how researchers from different geo-scientific disciplines have jointly analysed the structural, thermal, and sedimentary evolution as well as fluid dynamics of a complex sedimentary basin system which has experienced a variety of activation and reactivation impulses as well as intense salt tectonics. In this book we have summarized our geological, geophysical and geochemical understanding of some of the most important processes affecting sedimentary basins in general and our view on the evolution of one of the largest, best explored and most complex continental sedimentary basins on Earth: The Central European Basin System.
Download or read book Mobility and Pottery Production written by Caroline Heitz and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book combines findings from archaeology and anthropology on the making, use and distribution of hand-made pottery, the rhythms of mobility involved and the transformations triggered by such processes, discussing different theoretical perspectives and methodological approaches.
Download or read book Complex Cases with LASIK written by Louis E. Probst and published by Slack. This book was released on 2000 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ability to effectively manage complications and complex cases is essential for the success of any LASIK practice. Complex Cases with LASIK provides a comprehensive review of some of the most common and many of the most challenging LASIK cases, so that every LASIK surgeon can feel confident managing complex surgical strategies and outcomes. This book represents a collection of more than 85 complex LASIK cases from the world's most prominent refractive surgeons who have a combined experience of over 200,000 LASIK procedures. Common LASIK complications such as epithelial ingrowth and flap striae are addressed, as well as the less common but difficult complications of central islands, buttonhole flaps, LASIK interface keratitis, and irregular astigmatism. LASIK contraindications are also reviewed to demonstrate complex case outcomes. The complex cases are divided into categories and each subsection contains a summary that describes the current concepts for those problems. Each complex case starts with a standard data page outlining the critical case information. The case presentation includes clinical, intraoperative, and postoperative photographs, as well as relevant topographies. Each case is followed by an editorial comment summarizing the key points and highlighting the pearls and pitfalls. This book is an essential resource for both the aspiring and experienced LASIK surgeon.
Download or read book Custom LASIK written by Lucio Buratto and published by . This book was released on 2003 with total page 824 pages. Available in PDF, EPUB and Kindle. Book excerpt: Custom LASIK: Surgical Techniques and Complications is the most comprehensive resource on LASIK currently available. This new edition of LASIK: Surgical Techniques and Complications has been revised and updated to include the latest in wavefront technology, new microkeratome instruments, and the most recent surgical procedures, in addition to various complex cases and complications. The collaboration of Drs. Buratto and Brint, along with a team of international surgeons, have produced a complete text specifically to improve the quality of vision. Amateur surgeons benefit from the format in which basic surgical procedures are explained. Advanced laser procedure with ablations and intralase without the blade are more advanced techniques specifically detailed to assist the expert surgeon. The scope of this new edition is designed to provide the multitude of LASIK techniques that have emerged and the technological advancements that have made them possible. With over 1,000 color illustrations demonstrating the various procedures and concepts, readers are able to develop a more thorough understanding of LASIK. These images supplement the wealth of surgical strategies presented throughout this resource.
Download or read book Femtosecond Laser Assisted Keratoplasty written by Jorge L Alio and published by JP Medical Ltd. This book was released on 2013-07-30 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keratoplasty is the transplantation of all or part of the cornea to repair scarred or damaged tissue. A femtosecond laser is a laser which emits ultrashort pulses, used for minimally invasive corneal surgery. This book is a concise guide to the technique of femtosecond laser-assisted keratoplasty. Beginning with an introduction to the technology, the following chapters discuss its use for different disorders. This practical text is based on the surgical experience of its internationally recognised authors from Spain, Germany, France and the USA. It includes more than 230 full colour clinical photographs and illustrations to enhance learning. Key points Concise guide to the corneal transplantation procedure of femtosecond laser-assisted keratoplasty Covers key technologies and uses for different disorders Internationally recognised author and editor team Includes more than 230 clinical photographs and illustrations
Download or read book Pediatric Nuclear Medicine PET written by S. Ted Treves and published by Springer Science & Business Media. This book was released on 2007-04-03 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 3rd edition of this classic – considered the standard in the field - reflects the latest advances in PET, SPECT, and oncology. Updated to incorporate cutting-edge diagnostic techniques, it serves as a bedrock resource for physicians whose nuclear medicine practices include children and provides a vast amount of background material for residents in training. The new edition retains the fundamental standard of excellence that earned its predecessors such a distinguished reputation. It has been thoroughly updated to incorporate cutting-edge diagnostic techniques. Pediatric Nuclear Medicine/PET, Third Edition is an indispensable resource for physicians whose practices include children and provides a vast amount of background material for residents in training.
