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Curation Of Solar Wind Collector Plates From A Solar Wind Sample Return Swsr Spacecraft Mission
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Book Synopsis Curation of Solar Wind Collector Plates from a Solar Wind Sample Return (SWSR) Spacecraft Mission by : Allan H. Treiman
Download or read book Curation of Solar Wind Collector Plates from a Solar Wind Sample Return (SWSR) Spacecraft Mission written by Allan H. Treiman and published by . This book was released on 1993 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Genesis Mission by : C.T. Russell
Download or read book The Genesis Mission written by C.T. Russell and published by Springer Science & Business Media. This book was released on 2011-06-27 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: NASA's Genesis mission, launched on August 8, 2001 is the fifth mission in the Discovery series. Genesis addresses questions about the materials and processes involved in the origin of the solar system by providing precise knowledge of solar isotopic and elemental compositions for comparison with the compositions of meteoritic and planetary materials. This book describes the Genesis mission, the solar wind collector materials, the solar wind concentrator and simulations of its performance, the plasma ion and electron instruments, and the way these two instruments are used to determine the solar wind flow regime on board the spacecraft. The book is of interest to all potential users of the data returned by the Genesis mission, to those studying the isotopic and chemical composition of the early solar system whose work will be influenced by the measurements made by Genesis and by all those interested in the design and implementation of space instruments to study space plasmas.
Book Synopsis Solar Wind Sample Return Explorer Mission by : D. S. Burnett
Download or read book Solar Wind Sample Return Explorer Mission written by D. S. Burnett and published by . This book was released on 1986* with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Materials in Space - Science, Technology and Exploration: Volume 551 by : Aloysius F. Hepp
Download or read book Materials in Space - Science, Technology and Exploration: Volume 551 written by Aloysius F. Hepp and published by . This book was released on 1999-11-26 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: The MRS Symposium Proceeding series is an internationally recognised reference suitable for researchers and practitioners.
Book Synopsis Impurity Characterization of Solar Wind Collectors for the Genesis Discovery Mission by Resonance Ionization Mass Spectrometry by :
Download or read book Impurity Characterization of Solar Wind Collectors for the Genesis Discovery Mission by Resonance Ionization Mass Spectrometry written by and published by . This book was released on 1999 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: NASA's Genesis Discovery Mission is designed to collect solar matter and return it to earth for analysis. The mission consists of launching a spacecraft that carries high purity collector materials, inserting the spacecraft into a halo orbit about the L1 sun-earth libration point, exposing the collectors to the solar wind for two years, and then returning the collectors to earth. The collectors will then be made available for analysis by various methods to determine the elemental and isotopic abundance of the solar wind. In preparation for this mission, potential collector materials are being characterized to determine baseline impurity levels and to assess detection limits for various analysis techniques. As part of the effort, potential solar wind collector materials have been analyzed using resonance ionization mass spectrometry (RIMS). RIMS is a particularly sensitivity variation of secondary neutral mass spectrometry that employs resonantly enhanced multiphoton ionization (REMPI) to selectively postionize an element of interest, and thus discriminates between low levels of that element and the bulk material. The high sensitivity and selectivity of RIMS allow detection of very low concentrations while consuming only small amounts of sample. Thus, RIMS is well suited for detection of many heavy elements in the solar wind, since metals heavier than Fe are expected to range in concentrations from 1 ppm to 0.2 ppt. In addition, RIMS will be able to determine concentration profiles as a function of depth for these implanted solar wind elements effectively separating them from terrestrial contaminants. RIMS analyses to determine Ti concentrations in Si and Ge samples have been measured. Results indicate that the detection limit for RIMS analysis of Ti is below 100 ppt for 106 averages. Background analyses of the mass spectra indicate that detection limits for heavier elements will be similar. Furthermore, detection limits near 1 ppt are possible with higher repetition rate lasers where it will be possible to increase signal averaging to 108 laser shots.
Download or read book The Genesis Mission written by and published by . This book was released on 2005 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The NASA Genesis mission collected solar wind on ultrapure materials between November 30, 2001 and April 1, 2004. The samples were returned to Earth September 8, 2004. Despite the hard landing that resulted from a failure of the avionics to deploy the parachute, many samples were returned in a condition that will permit analyses. Sample analyses of these samples should give a far better understanding of the solar elemental and isotopic composition (Burnett et al. 2003). Further, the photospheric composition is thought to be representative of the solar nebula, so that the Genesis mission will provide a new baseline for the average solar nebula composition with which to compare present-day compositions of planets, meteorites, and asteroids. Sample analysis is currently underway. The Genesis samples must be placed in the context of the solar and solar wind conditions under which they were collected. Solar wind is fractionated from the photosphere by the forces that accelerate the ions off of the Sun. This fractionation appears to be ordered by the first ionization potential (FIP) of the elements, with the tendency for low-FIP elements to be over-abundant in the solar wind relative to the photosphere, and high-FIP elements to be under-abundant (e.g. Geiss, 1982; von Steiger et al., 2000). In addition, the extent of elemental fractionation differs across different solarwind regimes. Therefore, Genesis collected solar wind samples sorted into three regimes: 'fast wind' or 'coronal hole' (CH), 'slow wind' or 'interstream' (IS), and 'coronal mass ejection' (CME). To carry this out, plasma ion and electron spectrometers (Barraclough et al., 2003) continuously monitored the solar wind proton density, velocity, temperature, the alpha/proton ratio, and angular distribution of suprathermal electrons, and those parameters were in turn used in a rule-based algorithm that assigned the most probable solar wind regime (Neugebauer et al., 2003). At any given time, only one of three regime-specific collectors (CH, IS, or CME) was exposed to the solar wind. Here we report on the regime-specific solar wind conditions from in-situ instruments over the course of the collection period. Further, we use composition data from the SWICS (Solar Wind Ion Composition Spectrometer) instrument on ACE (McComas et al., 1998) to examine the FIP fractionation between solar wind regimes, and make a preliminary comparison of these to the FIP analysis of Ulysses/SWICS composition data (von Steiger et al. 2000). Our elemental fractionation study includes a reevaluation of the Ulysses FIP analysis in light of newly reported photospheric abundance data (Asplund, Grevesse & Sauval, 2005). The new abundance data indicate a metallicity (Z/X) for the Sun almost a factor of two lower than that reported in the widely used compilation of Anders & Grevesse (1989). The new photospheric abundances suggest a lower degree of solar wind fractionation than previously reported by von Steiger et al. (2000) for the first Ulysses polar orbit (1991-1998).
Book Synopsis The Power of the Machine by : Alf Hornborg
Download or read book The Power of the Machine written by Alf Hornborg and published by Rowman Altamira. This book was released on 2001-10-16 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hornborg argues that we are caught in a collective illusion about the nature of modern technology that prevents us from imagining solutions to our economic and environmental crises other than technocratic fixes. He demonstrates how the power of the machine generates increasingly asymmetrical exchanges and distribution of resources and risks between distant populations and ecosystems, and thus an increasingly polarized world order. The author challenges us to reconceptualize the machine—'industrial technomass'—as a species of power and a problem of culture. He shows how economic anthropology has the tools to deconstruct the concepts of production, money capital, and market exchange, and to analyze capital accumulation as a problem at the very interface of the natural and social sciences. His analysis provides an alternative understanding of economic growth and technological development. Hornborg's work is essential for researchers in anthropology, human ecology, economics, political economy, world-systems theory, environmental justice, and science and technology studies. Find out more about the author at the Lund University, Sweden web site.
Book Synopsis Strategic Plan, 2008-2012 by : Kenya Human Rights Commission
Download or read book Strategic Plan, 2008-2012 written by Kenya Human Rights Commission and published by . This book was released on 2007 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Kenya Human Rights Commission (KHRC) envisions a Kenya that respects, protects and promotes human rights and democratic values. This vision is grounded in the belief that it is possible to realize a new Kenyan society based on a human rights culture that upholds the dignity of all its members equally and without discrimination. This Strategic Plan represents a blueprint towards achieving its roles and mandate during the period 2008-2012.
Book Synopsis Volatiles in the Martian Crust by : Justin Filiberto
Download or read book Volatiles in the Martian Crust written by Justin Filiberto and published by Elsevier. This book was released on 2018-08-30 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volatiles in the Martian Crust is a vital reference for future missions - including ESA’s EXO Mars and NASA’s Mars2020 rover - looking for evidence of life on Mars and the potential for habitability and human exploration of the Martian crust. Mars science is a rapidly evolving topic with new data returned from the planet on a daily basis. The book presents chapters written by well-established experts who currently focus on the topic, providing the reader with a fresh, up-to-date and accurate view. Organized into two main sections, the first half of the book focuses on the Martian meteorites and specific volatile elements. The second half of the book explores processes and locations on the crust, including what we have learned about volatile mobility in the Martian crust. Coverage includes data from orbiter and in situ rovers and landers, geochemical and geophysical modeling, and combined data from the SNC meteorites. Presents information about the nature, relationship, and reactivity of chemical elements and compounds on Mars Explores the potential habitability of Mars Provides a comprehensive view of volatiles in the Martian crust from studies of actual samples as well as from the variety of landed missions, including the MER and Curiosity rovers Delivers a vital reference for ongoing and future missions to Mars while synthesizing large data sets and research on volatiles in the Martian atmosphere Concludes with an informative summary chapter that looks to future Mars missions and what might be learned
Book Synopsis Mars Science Laboratory by : John Grotzinger
Download or read book Mars Science Laboratory written by John Grotzinger and published by Springer. This book was released on 2012-12-19 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Mars Science Laboratory is the latest and most advanced NASA roving vehicle to explore the surface of Mars. The Curiosity rover has landed in Gale crater and will explore this region assessing conditions on the surface that might be hospitable to life and paving the way for later even more sophisticated exploration of the surface. This book describes the mission, its exploration and scientific objectives, studies leading to the design of the mission and the instruments that accomplish the objectives of the mission. This book is aimed at all those engaged in Martian studies as well as those interested in the origin of life in other environments. It will be a valuable reference for anyone who uses data from the Mars Science Laboratory. Previously published in Space Science Reviews journal, Vol. 170/1-4, 2012.
Book Synopsis Nourishing millions: Stories of change in nutrition: Synopsis by : Yosef, Sivan
Download or read book Nourishing millions: Stories of change in nutrition: Synopsis written by Yosef, Sivan and published by Intl Food Policy Res Inst. This book was released on 2016-06-29 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, the world has seen unprecedented attention and political commitment to addressing malnutrition. Milestones such as the Scaling Up Nutrition (SUN) Movement, the Lancet Maternal and Child Nutrition Series, and the Second International Conference on Nutrition (ICN2) have marked the rapid rise of nutrition on the global policy and research agenda. These developments reverse years of relative neglect for nutrition. Undernutrition is a global challenge with huge social and economic costs. It kills millions of young children annually, stunts growth, erodes child development, reduces the amount of schooling children attain, and increases the likelihood of their being poor as adults, if they survive. Stunting persists through a lifetime and beyond—underweight mothers are more likely to give birth to underweight children, perpetuating undernutrition across generations. Undernutrition reduces global gross domestic product by US$1.4–$2.1 trillion a year—the size of the total economy of Africa south of the Sahara.
Book Synopsis Sustainable Cities and Energy Policies by : Roberta Capello
Download or read book Sustainable Cities and Energy Policies written by Roberta Capello and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this book is to highlight the great potential of decentralized (i.e. local or urban) energy policies in achieving environmentally-benign developments for modern cities. Urban sustainability is placed in the context of the debate on global sustainable development. A wide array of policy initiatives is discussed and evaluated, ranging from market-based energy policies to technological innovation policies for the energy sector. A theoretical framework for technology adoption processes is developed and empirically tested. The main question addressed is: which are the critical success factors for successful urban energy policies? This question is also dealt with in a meta-analytic context by assessing and comparing the performance of energy policies in various European cities, with a particular view to renewable energy.
Author :International Food Policy Research Institute Publisher :Intl Food Policy Res Inst ISBN 13 :9780896295490 Total Pages : pages Book Rating :4.2/5 (954 download)
Book Synopsis 2011 Global Food Policy Report by : International Food Policy Research Institute
Download or read book 2011 Global Food Policy Report written by International Food Policy Research Institute and published by Intl Food Policy Res Inst. This book was released on 2012-04-23 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The 2011 Global Food Policy Report is a new annual IFPRI publication that provides a comprehensive, research-based analysis of major food policy challenges at the global, regional, national, and local levels. It highlights important developments and events in food policy that occurred in 2011, discusses lessons learned, offers policy recommendations, presents IFPRI's food policy tools and indicators, and takes a look forward into 2012. The Report reflects perspectives from across the globe. Its nine chapters, written by IFPRI researchers and other food policy experts, provide state-of-the-art analysis on such crucial topics as:food price levels and volatility natural and human-caused disasters climate change biofuels the links between agriculture and nutrition, health, water, and energy sustainable land management regional developments new players in global food policy The Report features numerous tables, figures, infographics, and maps, as well as a collection of stakeholders' thoughts on what influenced food policy in 2011.
Book Synopsis Jane's Air-launched Weapons by : Duncan Lennox
Download or read book Jane's Air-launched Weapons written by Duncan Lennox and published by . This book was released on 2001 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: - Air-to-air missiles - Air-to-surface missiles - Bombs - Guns, pods and mountings - Air-launched rockets - Underwater weapons - Analysis tables - Contractors
Book Synopsis Teff: nutrient composition and health benefits by : Baye, Kaleab
Download or read book Teff: nutrient composition and health benefits written by Baye, Kaleab and published by Intl Food Policy Res Inst. This book was released on with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Teff (Eragrostis tef), has been cultivated and used for human consumption in Ethiopia for centuries. However, teffs global use for human consumption has been restrained partly due to limited knowledge about its nutrient composition and the processing challenges faced in making teff-based food products. Over the past decade, the recognition that teff is gluten-free has raised global interest. Consequently, literature on the nutritional composition, processing quality, and health benefits of teff has grown considerably. The existing literature suggests that teff is composed of complex carbohydrates with slowly digestible starch. Teff has a similar protein content to other more common cereals like wheat, but is relatively richer than other cereals in the essential amino acid lysine. Teff is also a good source of essential fatty acids, fiber, minerals (especially calcium and iron), and phytochemicals such as polyphenols and phytates.
Download or read book Technical Abstracts written by and published by . This book was released on 1965 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Cereals and Pulses by : Martin Brink
Download or read book Cereals and Pulses written by Martin Brink and published by PROTA. This book was released on 2006 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
