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In Walking with Friends, D.J. Gregory, a thirty-yearold who has cerebral palsy, describes his year of traveling with the PGA tour and walking every course. For D.J., this experience has been the fulfillment of a lifelong dream as well as a search for inspiration, but it has also become a source of inspiration for countless others. D.J. started watching golf with his father when he was twelve years old. While becoming a professional player, joining the amateur ranks, or even becoming a caddy were never realistic considerations because of his cerebral palsy, being able to walk the courses that the golfers—D.J.’s heroes— played was a dream D.J. never gave up on. Over the course of the 200...
COX-2 inhibitors are important drugs with analgesic and anti-inflammatory effects. The discovery of COX-2, the evolution of drug development in this field and the implications of these developments in patient therapy are topics of this volume. This book presents both pre-clinical and clinical information and is important for clinicians interested in the latest information about this class of drugs, for researchers and for students in the field.
Speciation is one of the great themes of evolutionary biology. It is the process through which new species are born and diversity generated. Yet for many years our understanding of the process consisted of little more than a perception that if populations are isolated geographically, they will diverge genetically and may come to form new species. This situation began to change in the 1960s as an increasing number of biologists challenged the exclusivity of allopatric speciation and began to probe more deeply into the actual process by which divergence occurs and reproductive isolation is acquired. This focus on process led to many new insights, but numerous questions remain and speciation is now one of the most dynamic areas of research in modern evolutionary biology. This volume presents the newest research findings on speciation bringing readers up to day on species concepts, modes of speciation, and the nature of reproductive barriers. It also discusses the forces that drive divergence of populations, the genetic control of reproductive isolation, and the role played by hybrid zones and hybridization in speciation.
Progress in Medicinal Chemistry
Vols. for 1963- include as pt. 2 of the Jan. issue: Medical subject headings.
Rooted firmly in the principles of econology, the agricultural enterprise, even though having been exposed to the impact of environmental problems arising from land degradation, soil erosion, groundwater depletion and pollution and loss of biological diversity, has so far stood firm and survived to meet the food requirements of the growing population, so much so that there have been some striking instances of food glut in several countires, including some that used to sufer famiens only half a century ago.
As an ecosystem service, soil also serves to capture nutrients and sequester carbon, and these issues are discussed in the context of adding value to soil protection. The influence of modern agricultural techniques in enhancing soil productivity is also discussed. Throughout the book case studies support the discussion.
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