Bøger udgivet af Nova Science Publishers Inc

Earth resources are the precious assets that provide living space for human beings. In the last few decades, the pressure on earth resources has increased due to anthropogenic activities and rapid industrialization. The sustainable management of earth resources requires reliable, accurate, and timely information at different observational scales. Geo-information technology is an efficient tool for acquiring information required for environmental protection, earth resources monitoring, and addressing the issues associated with sustainable development and management. It offers an influential and capable tool for mapping, monitoring, modeling, and management of earth resources. Many researchers have reported their findings and operational applications of direct relevance to the management of earth resources with the launch of imaging satellites in the 1970s. However, few studies have been reported to understand the core science and research basics, as there are larger issues of capacity building to use geo-information technology in sustainable development and management of earth resources. There is also a fundamental gap between the theoretical concepts and the operational use of these advanced tools. This could be resolved by providing a broad range of applications of this technology to the scientific and research community in the field of geospatial technologies and allied subjects. This book, entitled "Geo-Information Technology in Earth Resources Monitoring and Management," deals with the challenges for sustainable management and development of earth resources with a focus on India and other countries around the world. The chapters are written by prominent academicians, researchers, and experts in the field of geo-information technology and related subjects. This book is a collection of chapters providing a multi-disciplinary overview for academicians, researchers, scientists, administrators, policymakers, social scientists, and professionals involved in the various aspects of earth resources development, planning, and management. The aim of this book is to replenish the gap in the available literature on the subject by bringing together the concepts, theories, and experiences of specialists and professionals in this field.

Cnidarians are elegant and dazzling aquatic organisms, but despite their beauty they are known to be a threat in many coastal areas around the world. Several species of cnidaria living in tropical or sub-tropical areas are remarkably dangerous, but many Mediterranean species can also cause serious health problems. Really, cnidarians (sea anemones, corals, medusae) are considered among the most dangerous and venomous organisms, thanks to the occurrence in their tissues of batteries of intracellular capsules (nematocysts or cnidocysts) produced by the Golgi apparatus of specialized cells (nematocytes or cnidocytes) from which the phylum Cnidaria takes the name (from the Greek κνίδη = nettle). The consequences of human encounters with cnidarians vary widely, from simple skin irritation to serious anaphylactic manifestations in sensitive subjects. During the last few decades, cnidarians have been perceived as increasingly dangerous due to recurrent jellyfish outbreaks which constitute a threat both for human health and economy and for the environmental equilibrium. In addition, the occurrence of alien species, whose spread is facilitated by human activities, environmental changes, global warming, or man-made modifications of the natural features of territories, pose new and serious challenges to environmental management. For all these reasons, cnidarians can be viewed as a problem. Nevertheless, cnidarians are also viewed with particular interest due to their potential in the field of natural products. Scientists have realized the potential of natural resources hidden in aquatic environments for the development of new drugs or bioactive substances with wide potential use. At present, an enormous scientific literature is available about the value of cnidarian products as potential therapeutic agents, in human nutrition, or for other applications. As such, these organisms can also be reasonably considered a resource. Taking into consideration these two main aspects, this book aims to collect the experiences and recent research data on cnidarians and review present knowledge on the subjects.