Download or read book Between the Scales Water from different Perspectives written by Christoph Junghans and published by Christoph Junghans. This book was released on with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Between the Scales Water from Different Perspectives written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Water is one of the most frequently studied fluids on earth. In this thesis, water was investigated at two resolutions using multi-scale computer simulation techniques. First, the atomistic and coarse-grained resolutions were studied separately. In the atomistic resolution, a~water molecule is described chemically by three atoms, while in the coarse-grained case, a~molecule is modeled by a~sphere.rnrnIn this work, various coarse-grained models have been developed using different coarse-graining techniques, mainly iterative Boltzmann inversion and iterative inverse Monte Carlo, which are structure-based approaches that aim to reproduce distributions, such as the pair distribution functions, of the atomistic model. In this context the Versatile Object-oriented Toolkit for Coarse-graining applications (VOTCA) was developed.rnrnIt was studied to which extent the coarse-grained models can simultaneously reproduce several properties of the underlying atomistic model, such as thermodynamic properties like pressure and compressibility or structural properties, which have not been used in the coarse-graining process, e.g. the tetrahedral packing behavior, which is responsible for many special properties of water.rnrnSubsequently, these two resolutions were combined using the adaptive resolution scheme, which combines the advantage of atomistic details in a~small cavity of high resolution with the computational efficiency of the coarse-grained model in order to access larger time and length scales. In this scheme, the introduced coarse-grained models were used to study the influence of the hydrogen bonds on the hydration of small fullerenes. It was found that the interface structure is more dependent on the nature of the interaction between the solute and water molecules than on the presence of the hydrogen bond network.rn.
Download or read book Between the Scales Water from Different Perspectives written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Water is one of the most frequently studied fluids on earth. In this thesis, water was investigated at two resolutions using multi-scale computer simulation techniques. First, the atomistic and coarse-grained resolutions were studied separately. In the atomistic resolution, a~water molecule is described chemically by three atoms, while in the coarse-grained case, a~molecule is modeled by a~sphere.rnrnIn this work, various coarse-grained models have been developed using different coarse-graining techniques, mainly iterative Boltzmann inversion and iterative inverse Monte Carlo, which are structure-based approaches that aim to reproduce distributions, such as the pair distribution functions, of the atomistic model. In this context the Versatile Object-oriented Toolkit for Coarse-graining applications (VOTCA) was developed.rnrnIt was studied to which extent the coarse-grained models can simultaneously reproduce several properties of the underlying atomistic model, such as thermodynamic properties like pressure and compressibility or structural properties, which have not been used in the coarse-graining process, e.g. the tetrahedral packing behavior, which is responsible for many special properties of water.rnrnSubsequently, these two resolutions were combined using the adaptive resolution scheme, which combines the advantage of atomistic details in a~small cavity of high resolution with the computational efficiency of the coarse-grained model in order to access larger time and length scales. In this scheme, the introduced coarse-grained models were used to study the influence of the hydrogen bonds on the hydration of small fullerenes. It was found that the interface structure is more dependent on the nature of the interaction between the solute and water molecules than on the presence of the hydrogen bond network.rn.
Download or read book Field Scale Water and Solute Flux in Soils written by Roth and published by Birkhäuser. This book was released on 2012-12-06 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the proceedings of the first workshop held at Monte Verità near Ascona, Switzerland on September 24-29, 1989. The workshop was designed to survey the current understanding of water and solute transport through unsaturated soils under field conditions, and to foster research by discussing some unresolved key issues relative to transport modeling and experimentation in four "Think Tank" groups. The first part of this book consists of the reports prepared by the Think Tank groups, who discussed the following topics: modeling approaches, effective large scale properties, evaluation of filed properties, and the role preferential flow. The second part contains a selection of reviewed original contributions presented at the workshop, with topics ranging from the presentation of results from large scale experiments, to improved or new modeling approaches, and to legal or policy aspects. This book is intended for researchers in soil science, hydrology, and environmental engineering who have an interest in transport and reaction processes in the unsaturated zone. It will provide them with a representative sample of current research activities, and with a group discussion of future research directions in four important areas of water and solute transport.
Download or read book Soil and Water Quality at Different Scales written by Peter A. Finke and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Integrated studies on the assessment and improvement of soil and water quality have to deal almost inevitably with issues of scale, since the spatial support of measurements, the model calculations and the presentation of results usually vary. This book contains the selected and edited proceedings of a workshop devoted to issues of scale entitled: `Soil and Water Quality at Different Scales', which was held in 1996 in Wageningen. It is intended for environmental researchers, scientists and MSc and PhD students. Part 1 covers current issues and methodologies with scale related soil and water quality research. Part 2 covers agroecological and hydrological case studies in which scale transforms form an important part of the research chain. Part 3 consists of papers focusing on methodologies and up and downscaling. Part 4 contains review papers based on modellers' and statisticians' considerations as well as the papers and posters presented during the workshop. Part 5 consists of short research notes.
Download or read book The Palgrave Handbook of Global Sustainability written by Robert Brinkmann and published by Springer Nature. This book was released on 2023-04-04 with total page 2585 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of sustainability continues to evolve as a discipline. The world is facing multiple sustainability challenges such as climate change, water depletion, ecosystem loss, and environmental racism. The Handbook of Sustainability will provide a comprehensive reference for the field that examines in depth the major themes within what are known as the three E’s of sustainability: environment, equity, and economics. These three themes will serve as the main organizing body of the work. In addition, the work will include sections on history and sustainability, major figures in the development of sustainability as a discipline, and important organizations that contributed or that continue to contribute to sustainability as a field. The work is explicitly global in scope as it considers the very different issues associated with sustainability in the global north and south
Download or read book The Oxford Handbook of Water Politics and Policy written by Ken Conca and published by Oxford University Press. This book was released on 2018 with total page 713 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook is currently in development, with individual articles publishing online in advance of print publication. At this time, we cannot add information about unpublished articles in this handbook, however the table of contents will continue to grow as additional articles pass through the review process and are added to the site. Please note that the online publication date for this handbook is the date that the first article in the title was published online. For more information, please read the site FAQs.
Download or read book Small scale water supply system SSS for remote and rural areas in developing countries written by Jose Abdon Ordóñez Andrade and published by kassel university press GmbH. This book was released on 2018-10-23 with total page 333 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Waterbackpack PAUL -Portable Aqua Unit for Life Saving- is a water treatment unit based on the Ultra-Low Pressure Ultrafiltration (ULP-UF) technology and is since 2010 successfully applied as a fast response to get safe water during natural disasters or emergencies in more than 2 000 cases worldwide. In addition, PAUL has demonstrated that the ULP-UF technology can be used in permanent decentralised drinking-water supply for remote and rural areas, as it is easy to handle and does require neither chemicals nor energy consumption nor spare parts on a regular basis. Hence, the ULP-UF is an appropriate solution in the process of reaching the Sustainable Development Goals (SDGs), ensure by 2030 access to safe drinking water worldwide. However, during long-term uses and under certain water characteristics, the ULP-UF faces some operational and maintenance challenges. The biofouling adhered to the membrane surface may lead to severe flux reduction. In addition, some re-growth of bacteria may take place on the permeate side because of the presence of high content of natural organic matter (NOM) in the raw water, especially Biopolymer and Humic Acids. Therefore, the aim of this study was to integrate some appropriate treatment steps before the ULP-UF technology, so that a reduction of attachment of NOM and biofilm to the membrane could be achieved and thus an increase of permeate flux and a reduction of potential regrowth of bacteria on permeate water could be accomplished.
Download or read book Water Pollution in Natural Porous Media at Different Scales written by L. Candela and published by IGME. This book was released on 2007 with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Best practices and technologies for small scale agricultural water management in Ethiopia Proceedings of a MoARD MoWR USAID IWMI Symposium and Exhibition held at Ghion Hotel Addis Ababa Ethiopia 7 9 March 2006 written by Awulachew, Seleshi Bekele and published by IWMI. This book was released on with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: Policy / Irrigation practices / Drip irrigation / Irrigation systems / Water harvesting / Irrigation management
Download or read book Large Scale Regional Water Resources Planning written by D.C. Major and published by Springer. This book was released on 2013-12-21 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: While creativity plays an important role in the advancement of computer science, great ideas are built on a foundation of practical experience and knowledge. This book presents programming techniques which will be useful in both AI projects and more conventional software engineering endeavors. My primary goal is to enter tain, to introduce new technologies and to provide reusable software modules for the computer programmer who enjoys using programs as models for solutions to hard and interesting problems. If this book succeeds in entertaining, then it will certainly also educate. I selected the example application areas covered here for their difficulty and have provided both program examples for specific applications and (I hope) the method ology and spirit required to master problems for which there is no obvious solution. I developed the example programs on a Macintosh TM using the Macintosh Common LISP TM development system capturing screen images while the example programs were executing. To ensure portability to all Common LISP environments, I have provided a portable graphics library in Chapter 2. All programs in this book are copyrighted by Mark Watson. They can be freely used in any free or commercial software systems if the following notice appears in the fine print of the program's documentation: "This program contains software written by Mark Watson." No royalties are required. The program miniatures contained in this book may not be distributed by posting in source code form on public information networks, or in printed form without my written permission.
Download or read book Environmental Health Perspectives written by and published by . This book was released on 1993 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Encyclop dia Britannica written by Hugh Chisholm and published by . This book was released on 1926 with total page 1972 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Steam written by Babcock & Wilcox Company and published by . This book was released on 1923 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Refrigerating World written by and published by . This book was released on 1918 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Global Water System in the Anthropocene written by Anik Bhaduri and published by Springer. This book was released on 2014-08-11 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Global Water System in the Anthropocene provides the platform to present global and regional perspectives of world-wide experiences on the responses of water management to global change in order to address issues such as variability in supply, increasing demands for water, environmental flows and land use change. It helps to build links between science and policy and practice in the area of water resources management and governance, relates institutional and technological innovations and identifies in which ways research can assist policy and practice in the field of sustainable freshwater management. Until the industrial revolution, human beings and their activities played an insignificant role influencing the dynamics of the Earth system, the sum of our planet‘s interacting physical, chemical, and biological processes. Today, humankind even exceeds nature in terms of changing the biosphere and affecting all other facets of Earth system functioning. A growing number of scientists argue that humanity has entered a new geological epoch that needs a corresponding name: the Anthropocene. Human activities impact the global water system as part of the Earth system and change the way water moves around the globe like never before. Thus, managing freshwater use wisely in the planetary water cycle has become a key challenge to reach global environmental sustainability.
Download or read book Lectures on the Elements of Chemistry written by Joseph Black and published by . This book was released on 1807 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt:
