Download or read book FREZCHEM2 A Chemical Thermodynamic Model for Electrolyte Solutions at subzero Temperatures written by Giles M. Marion and published by DIANE Publishing. This book was released on 1994 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book FREZCHEM A Chemical Thermodynamic Model for Aqueous Solutions at Subzero Temperatures written by and published by . This book was released on 1994 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report documents a FORTRAN version of the Spencer-Moller-Weare chemical thermodynamic model for aqueous electrolyte solutions at sub-zero temperatures (FREZCHEM). FREZCHEM is structured to predict the chemical composition and unfrozen water of aqueous solutions between -60 deg and +25 deg C at atmospheric pressure (0.101325 MPa). FREZCHEM includes two reaction pathways: freezing at variable temperature and fixed total water and evaporation at variable water and fixed temperature. Activity coefficients and the activity of water are calculated using the Pitzer equations, which are valid to high solution ionic strengths (approx. 20 mol k-1). Fifteen chloride and sulfate salts of sodium, potassium, calcium, and magnesium are included in the model. Predicted and experimental measurements of solute molalities and the unfrozen water fraction during sea water freezing are in good agreement. At -50 deg C, 0.3 % of sea water remains unfrozen with 99.7% of Na and 95.5% of Cl having precipitated into one of four salts. FREZCHEM should find many applications in physicochemical studies of aqueous solutions and freezing.
Download or read book The Quaternary Period in the United States written by A.R. Gillespie and published by Elsevier. This book was released on 2003-12-17 with total page 595 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews advances in understanding of the past ca. two million years of Earth history - the Quaternary Period - in the United States. It begins with sections on ice and water - as glaciers, permafrost, oceans, rivers, lakes, and aquifers. Six chapters are devoted to the high-latitude Pleistocene ice sheets, to mountain glaciations of the western United States, and to permafrost studies. Other chapters discuss ice-age lakes, caves, sea-level fluctuations, and riverine landscapes. With a chapter on landscape evolution models, the book turns to essays on geologic processes. Two chapters discuss soils and their responses to climate, and wind-blown sediments. Two more describe volcanoes and earthquakes, and the use of Quaternary geology to understand the hazards they pose. The next part of the book is on plants and animals. Five chapters consider the Quaternary history of vegetation in the United States. Other chapters treat forcing functions and vegetation response at different spatial and temporal scales, the role of fire as a catalyst of vegetation change during rapid climate shifts, and the use of tree rings in inferring age and past hydroclimatic conditions. Three chapters address vertebrate paleontology and the extinctions of large mammals at the end of the last glaciation, beetle assemblages and the inferences they permit about past conditions, and the peopling of North America. A final chapter addresses the numerical modeling of Quaternary climates, and the role paleoclimatic studies and climatic modeling has in predicting future response of the Earth's climate system to the changes we have wrought.
Download or read book Cryosols written by John Kimble and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cryosols – permafrost – occupy a unique part of the earth and have properties greatly different from other soils. They also occur where the greatest impact of global warming is predicted. This is the first book bring together the leading researchers in the area of permafrost soils to produce a review of the geography, cryogenic soil forming processes, ecological processes, classification and use of soils that are affected by permafrost.
Download or read book Mining in the Arctic written by L. Lorentzen and published by CRC Press. This book was released on 2020-08-13 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proceedings of the 6th International Symposium on Mining in the Arctic, held in Greenland in 2001. The papers cover a wide variety of topics, including: mining exploration and exploitation; mining engineering and mine design; environmental impact of mining in the Arctic; and more.
Download or read book Life in the Universe written by Joseph Seckbach and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: The year 2003 was the 50th anniversary of the seminal experiment of Stanley Miller. This was a unique opportunity for highlighting the current interest in this most interdisciplinary subject. The leading space agencies: the European Space Agency (ESA) as well as NASA, the American Space Agency, have planned missions that will elucidate some of the still unknown questions underlying research in the origin of life. New results are surpassing our ability to keep well informed: the reviews that we were presented at the Trieste meeting will bring the readers of this well-documented and timely book up to date in this fast-moving area. An important component of the conference was the review of the Cassini-Huygens mission due to arrive in the Saturn system just one year after the conference convened in Trieste. There was particular interest in the status of the experiments that will take place inside the atmosphere of Titan, the large satellite, which is a testing ground for the theories and experiments in the field of chemical evolution. The Jovian system is currently under study with the view of investigating the possibility of life underneath the frozen surface of the Galilean moon Europa; the ESA mission "Mars Express" and Mars Odyssey received special attention. Some of the world leaders in the field gathered in Trieste in September 2003 - that was a most timely date for reviewing recent data and discussing the prospects of future research.
Download or read book Polar Microbiology written by Robert V. Miller and published by American Society for Microbiology Press. This book was released on 2011-12-29 with total page 453 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sheds new light on the microbial ecology and physiology of the Earth’s polar regions. • Examines the microbial investigations during the International Polar Year of 2008 focusing on the Arctic and Antarctic, along with earlier investigations on critical environmental issues such as climate change, ozone depletion, and elemental cycling. • Offers a survey of what is known and unknown about the microbial inhabitants of polar environments, addresses the adaptations and physiology of cold-adapted microorganisms, and explores the ecological role that polar microbial communities play in biogeochemical cycling. • Presents the challenges that polar and subpolar microorganisms face and describes the lowest temperatures in which microbial life can exist—and the prospects for life on other planets. Recommended for a general microbiology audience as well as for scientists and students in all areas of biology and geomicrobiology.
Download or read book High Temperature Aqueous Solutions written by Roberto Fernandez-Prini and published by CRC Press. This book was released on 1991-12-19 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a thorough discussion of the thermodynamics of aqueous solutions and presents tools for analyzing and solving scientific and practical problems arising in this area. It also presents methods that can be used to deal with ionic and nonionic aqueous solutions under sub- or supercritical conditions. Illustrations and tables give examples of procedures employed to predict thermodynamic quantities of the solutions, and an appendix summarizing statistical mechanical equations used to describe the systems is also provided. High-Temperature Aqueous Solutions: Thermodynamic Properties contains essential information for physical chemists, geochemists, geophysicists, chemical technicians, and scientists involved in electric power generation.
Download or read book Classical Thermodynamics of Non electrolyte Solutions written by Hendrick C. Van Ness and published by . This book was released on 1964 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Molecular Thermodynamics Of Electrolyte Solutions Second Edition written by Lloyd L Lee and published by World Scientific. This book was released on 2021-01-07 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electrolytes and salt solutions are ubiquitous in chemical industry, biology and nature. This unique compendium introduces the elements of the solution properties of ionic mixtures. In addition, it also serves as a bridge to the modern researches into the molecular aspects of uniform and non-uniform charged systems. Notable subjects include the Debye-Hückel limit, Pitzer's formulation, Setchenov salting-out, and McMillan-Mayer scale. Two new chapters on industrial applications — natural gas treating, and absorption refrigeration, are added to make the book current and relevant.This textbook is eminently suitable for undergraduate and graduate students. For practicing engineers without a background in salt solutions, this introductory volume can also be used as a self-study.
Download or read book Theoretical Prediction of the Thermodynamic Behavior of Aqueous Electrolytes at High Pressures and Temperatures written by Harold C. Helgeson and published by . This book was released on 1982 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electrolytes Properties of Solutions written by Georgiĭ Georgievich Aseev and published by Begell House Publishers. This book was released on 1999 with total page 606 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a continuation of a number of the author's works dealing with the study, representation, and methods of calculation of the physicochemical properties of binary and multicomponent electrolyte solutions. It gives data for a great number of electrolytes that are used in modern chemical technology, and is intended for scientific workers and engineers in the chemical and allied industries. Methods for calculating the thermal conductivity and surface tension of multicomponent electrolyte solutions with minimum errors are presented. Related equations for calculating the thermal conductivity of water at the saturation line in the temperature range of zero to 350 degrees C, the activity of water, and the water vapor pressure over pure water in the same temperature range, and over a solution at the saturation line are also considered.
Download or read book Cold Aqueous Planetary Geochemistry with FREZCHEM written by Giles M. Marion and published by Springer Science & Business Media. This book was released on 2007-12-20 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by two of the best US researchers in the field, this text investigates issues of astrobiological relevance in the context of cold aqueous planetary geochemistry. At the core of the technical chapters is the FREZCHEM model, initially developed over many years by one of the authors to quantify aqueous electrolyte properties and chemical thermodynamics at subzero temperatures. FREZCHEM is of huge relevance to scientists in a number of fields, including biogeochemists.
Download or read book Activity Coefficients in Electrolyte Solutions written by Kenneth S. Pitzer and published by CRC Press. This book was released on 2018-05-04 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book was first published in 1991. It considers the concepts and theories relating to mostly aqueous systems of activity coefficients.
Download or read book Hypersaline Environments written by Barbara J. Javor and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hypersaline environments are the principal habitats of petroleum deposition. They are also of intense evolutionary and ecological interest. This book presents a cross-disciplinary examination of the variety of halophilic microorganisms and their roles in modifying the ecology and geochemistry of hypersaline environments. The book also covers in detail the various inland and coastal habitats where halophilic microorganisms thrive. Geographically, hypersaline environments extend from the tropics to the poles, and from the terrestrial to the submarine. Organisms capable of living in such environments have faced unique evolutionary challenges.
Download or read book Life in Ancient Ice written by John D. Castello and published by Princeton University Press. This book was released on 2005-04-10 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on a National Science Foundation-sponsored symposium organized by the editors in 2001, it comprises twenty chapters by internationally renowned scientists, including Russian experts whose decades of work has been rarely available in English."--Jacket.
Download or read book The Planetary Scientist s Companion written by Katharina Lodders and published by Oxford University Press. This book was released on 1998-12-10 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scientists have collected a wealth of physical and chemical data for the Sun, planets, and small bodies in our solar system, but until now this information has been scattered throughout the technical literature. The Planetary Scientist's Companion solves this problem, providing for the first time a single, extensive reference for the interdisciplinary fields of planetary science and cosmochemistry. The book begins with a summary of frequently used physical and chemical constants, unit conversion factors, properties of some compounds and minerals, thermodynamic data, partition coefficients, and useful formulas. This is followed by an overview of the solar system, including comparative data for the planets and their satellites and abundances of the elements. Much of the book is devoted to a series of chapters describing in turn the Sun, each of the planets, and the groups of small bodies (asteroids, comets, meteorites, and Kuiper Belt and Centaur objects). Each chapter includes an introduction, followed by tables of physical and chemical properties compiled from many sources, including data on planetary atmospheres, surfaces, and interiors. The book concludes with data on nearby stars, the interstellar medium, and recently discovered brown dwarfs and possible extrasolar planets, followed by a glossary. A unique and practical resource for anyone interested in contemporary planetary science and cosmochemistry, this volume is likely to be an essential tool in future research.
