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Author: J. Kowallis Publisher: J. Kowallis ISBN: 1637959141 Category : Fiction Languages : en Pages : 343
Book Description
Sisters will clash. A staff, a sword. The gates are thrown open. Darkness sweeps through Taran's consciousness. Hellia's deathly apparition stole her sisters. She doesn't know where they are, where to look, or if she'll ever find them. While Taran's powers are growing, so is her fear and anxiety. Answers elude her, and no one understands her terror. Not even Coll. And time is running out. Every second brings them closer and closer to nothing. And closer to the waning end of the hexen race.
Author: J. Kowallis Publisher: J. Kowallis ISBN: 1637959141 Category : Fiction Languages : en Pages : 343
Book Description
Sisters will clash. A staff, a sword. The gates are thrown open. Darkness sweeps through Taran's consciousness. Hellia's deathly apparition stole her sisters. She doesn't know where they are, where to look, or if she'll ever find them. While Taran's powers are growing, so is her fear and anxiety. Answers elude her, and no one understands her terror. Not even Coll. And time is running out. Every second brings them closer and closer to nothing. And closer to the waning end of the hexen race.
Author: J. Kowallis Publisher: J. Kowallis ISBN: 1646067207 Category : Fiction Languages : en Pages : 350
Book Description
Bryden changed everything. History that once was, is no longer. And life doesn't exist as it once did. Hellia lurks in the shadows between worlds, but the specter of the once-powerful hexen is the least of Taran Grim's worries. Something happened that day in Bryden. Something Taran failed to see. And Coll might be the one paying the price.
Book Description
This volume offers a comprehensive overview of advanced research in the field of environmental green chemistry for air, soil and water pollutants, and presents emerging technologies on the chemical treatment of polluted sites and wastes. The 15 chapters, prepared by internationally respected experts, address the following topics: (1) monitoring of indoor and outdoor air pollutants; (2) atmospheric degradation processes and formation mechanisms of secondary pollutants; (3) the environmental assessment and impacts of soils polluted by heavy metals and hydrocarbons; (4) sustainable and emerging technologies for the chemical treatment of organic and animal wastes and wastewaters; (5) photocatalytic CO2 conversion methods for the mitigation of greenhouse effects; and (6) non-conventional methods in green chemistry synthesis. Lastly, the authors outline the future perspectives of each topic. Given its multidisciplinary approach, combining environmental analysis and engineering, the book offers a valuable resource for all researchers and students interested in environmental chemistry and engineering.
Author: Derek J. Chadwick Publisher: John Wiley & Sons ISBN: 0470515686 Category : Science Languages : en Pages : 290
Book Description
Insect-Plant Interactions and Induced Plant Defence Chair: John A. Pickett, 1999 This book examines the sophisticated mechanisms that plants use to defend themselves against attack by insects and pathogens, focusing on the networks of plant signalling pathways that underlie these defences. In response to herbivory, plants release a complex blend of as many as 100 volatile chemicals, known as semiochemicals ('sign chemicals'). These act as an airborne SOS signal, revealing the presence of the herbivore to the predators and parasitoids that are its natural enemies. Plants also have endogenous defence mechanisms that can be induced in response to pathogens, and separate chapters deal with systemic acquired resistance, phytoalexins, and the interacting pathways in pathogen and pest resistance. The book discusses underlying biochemical mechanisms by which plant stress leads to the biosynthesis of chemical signals from pools of secondary metabolite precursors, or even from the primary metabolism source. Finally, consideration is given to the possibilities for exploiting these signalling pathways by plant molecular genetics. The use of plant signals and their analogues to switch on defence pathways in crop plants is covered in depth. Bringing together contributions from entomologists, chemical ecologists, molecular biologists and plant physiologists this book is truly interdisciplinary, and will be essential reading for anyone with an interest in agricultural pest control.
Author: Herman Pines Publisher: Academic Press ISBN: Category : Science Languages : en Pages : 616
Book Description
Base-Catalyzed Reactions of Hydrocarbons and Related Compounds focuses on the use of bases as catalysts for the conversion of hydrocarbons and related compounds. In order to emphasize the broad scope of base-catalyzed reactions, examples dealing with the conversion of non-hydrocarbons are given. Comprised of 14 chapters, this book begins with a historical overview of base-catalyzed conversions of hydrocarbons, followed by a discussion on the isomerization of olefins, acetylenes, and allenes, as well as the dimerization and oligomerization of hydrocarbons. The reader is then introduced to a variety of reactions, including those between aromatic hydrocarbons and olefins and between alkylpyridines and alkenylpyridines; homogeneous carbon-carbon addition reactions; and reactions of aprotic solvents with olefins. Subsequent chapters explore carbon-carbon addition of olefins with miscellaneous compounds; addition of ammonia, amines, and anilines to olefinic hydrocarbons; hydrogenation and oxygenation; dehydrogenation, aromatization, and hydrogen transfer; and dehydration of alcohols. This monograph will be of interest to chemists.
Author: Wayne F. Reed Publisher: John Wiley & Sons ISBN: 0470917385 Category : Technology & Engineering Languages : en Pages : 493
Book Description
Offers new strategies to optimize polymer reactions With contributions from leading macromolecular scientists and engineers, this book provides a practical guide to polymerization monitoring. It enables laboratory researchers to optimize polymer reactions by providing them with a better understanding of the underlying reaction kinetics and mechanisms. Moreover, it opens the door to improved industrial-scale reactions, including enhanced product quality and reduced harmful emissions. Monitoring Polymerization Reactions begins with a review of the basic elements of polymer reactions and their kinetics, including an overview of stimuli-responsive polymers. Next, it explains why certain polymer and reaction characteristics need to be monitored. The book then explores a variety of practical topics, including: Principles and applications of important polymer characterization tools, such as light scattering, gel permeation chromatography, calorimetry, rheology, and spectroscopy Automatic continuous online monitoring of polymerization (ACOMP) reactions, a flexible platform that enables characterization tools to be employed simultaneously during reactions in order to obtain a complete record of multiple reaction features Modeling of polymerization reactions and numerical approaches Applications that optimize the manufacture of industrially important polymers Throughout the book, the authors provide step-by-step strategies for implementation. In addition, ample use of case studies helps readers understand the benefits of various monitoring strategies and approaches, enabling them to choose the best one to match their needs. As new stimuli-responsive and "intelligent" polymers continue to be developed, the ability to monitor reactions will become increasingly important. With this book as their guide, polymer scientists and engineers can take full advantage of the latest monitoring strategies to optimize reactions in both the lab and the manufacturing plant.
Author: J. Kowallis
Author: J. Kowallis
Author: J. Kowallis
Author: Paul Wayne Ayers
Author: Elena Jiménez
Author: Wayne S. Mahoney
Author: Derek J. Chadwick
Author: Herman Pines
Author: Wayne F. Reed
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