Download or read book Comparison of Shuffler and Segmented Gamma Scanner Measurements of 55 Gallon Drums Containing HEU Embedded in Varied Matrices written by and published by . This book was released on 2002 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many forms of nuclear waste materials are constantly generated at Los Alamos Chemical and Metallurgical Research (CMR) Facility. For disposal, accounting of the nuclear material must be done. We were recently tasked with measuring sixteen 55-gallon drums, each containing about 150 to 250 grams of HEU. The lower two-thirds of the drums consisted mostly of paper, plastics, and other combustibles. The HEU in this bulk waste had been previously assayed using a segmented gamma scanner (SGS) and ranged from 1 to 20 grams per drum. The drums were later re-opened and specific packages of HEU waste solids, mostly polyethylene bottles filled with uranium oxide and/or fluoride, were placed on top of the bulk waste. The number of bottles ranged from one to seven with an additional 235U mass between 150 to 230 grams per drum. Although many of these additional mass values were based on results from an old chemical analysis, they are expected to be reasonably accurate. We counted the drums on the SGS and shuffler instruments. The results were biased low on the SGS which was calibrated for normal combustible waste (not bottles embedded in waste) and biased high on the shuffler calibrated for small cans of oxide. The biases were caused by the differences among the calibration standards and the drums. This paper is a study of the nature of these biases, providing corrections and comparing the resulting performance characteristics of the instruments. This effort was greatly enhanced by having photographic as well as real-time radiographic information on many of the drums contents. A new software tool, recently developed at Los Alamos to calculate shuffler count rates accurately and generate bias correction factors, was applied to these drums. The application of the calculational tool to generate bias corrections for these types of matrices is described. The results from the two instruments are compared and discussed.
Download or read book Design and Fabrication of 55 gallon Drum Shuffler Standards written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: To analyze waste with varying levels of nuclear material, suitable standards are needed to calibrate analytical instrumentation. At the Los Alamos Plutonium Facility, the authors have designed and fabricated a single drum standard for a passive-active neutron counter (shuffler). The standard is modified simply by adding or subtracting plutonium of uranium cylinders to adapt to a range of nuclear material. The plutonium or uranium oxide was placed into small cylindrical containers (1-in. diameter by 5-in. long) and diluted with diatomaceous earth. The cylinders were welded closed and removed from the glove box environment without any external contamination. The containers were leak tested and then placed on a segmented gamma scanner to assure homogeneous distribution of the nuclear material. The cylinders are now placed into the drum to achieve the needed ranges for calibration of the instruments.
Download or read book Microbial Products for Health Environment and Agriculture written by Pankaj Kumar Arora and published by Springer Nature. This book was released on 2021-09-21 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edited volume discusses the role of various microbial products in healthcare, environment and agriculture. Several microbial products are directly involved in solving major health problems, agricultural and environmental issues. In healthcare sector, microbes are used as anti-tumor compounds, antibiotics, anti-parasitic agents, enzyme inhibitors and immunosuppressive agents. Microbial products are also used to degrade xenobiotic compounds and bio-surfactants, for biodegradation process. In agriculture, microbial products are used to enhance nutrient uptake, to promote plant growth, or to control plant diseases. The book presents several such applications of microbes in the ecosystems. The chapters are contributed from across the globe and contain up-to-date information. This book is of interest to teachers, researchers, microbiologists and ecologists. Also the book serves as additional reading material for undergraduate and graduate students of agriculture, forestry, ecology, soil science, and environmental sciences.
Download or read book Motor Cortex Microcircuits Frontiers in Brain Microcircuits Series written by Michael Brecht and published by Frontiers E-books. This book was released on 2015-01-05 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: How does the motor cortex enable mammals to generate accurate, complex, and purposeful movements? A cubic millimeter of motor cortex contains roughly ̃10̂5 cells, an amazing ̃4 Km of axons and ̃0.4 Km of dendrites, somehow wired together with ̃10̂9 synapses. Corticospinal neurons (a.k.a. Betz cells, upper motor neurons) are a key cell type, monosynaptically conveying the output of the cortical circuit to the spinal cord circuits and lower motor neurons. But corticospinal neurons are greatly outnumbered by all the other kinds of neurons in motor cortex, which presumably also contribute crucially to the computational operations carried out for planning, executing, and guiding actions. Determining the wiring patterns, the dynamics of signaling, and how these relate to movement at the level of specific excitatory and inhibitory cell types is critically important for a mechanistic understanding of the input-output organization of motor cortex. While there is a predictive microcircuit hypothesis that relates motor learning to the operation of the cerebellar cortex, we lack such a microcircuit understanding in motor cortex and we consider microcircuits as a central research topic in the field. This Research Topic covers any issues relating to the microcircuit-level analysis of motor cortex. Contributions are welcomed from neuroscientists at all levels of investigation, from in vivo physiology and imaging in humans and monkeys, to rodent models, in vitro anatomy, electrophysiology, electroanatomy, cellular imaging, molecular biology, disease models, computational modeling, and more.
Download or read book An Etymological Dictionary of the Latin Language written by Francis Edward Jackson Valpy and published by . This book was released on 1828 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt: An Etymological Dictionary of the Latin Language by Francis Edward Jackson Valpy, first published in 1828, is a rare manuscript, the original residing in one of the great libraries of the world. This book is a reproduction of that original, which has been scanned and cleaned by state-of-the-art publishing tools for better readability and enhanced appreciation. Restoration Editors' mission is to bring long out of print manuscripts back to life. Some smudges, annotations or unclear text may still exist, due to permanent damage to the original work. We believe the literary significance of the text justifies offering this reproduction, allowing a new generation to appreciate it.
Download or read book CRISPR written by Magnus Lundgren and published by Humana. This book was released on 2015-05-20 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents a list of cutting-edge protocols for the study of CRISPR-Cas defense systems and their applications at the genomic, genetic, biochemical and structural levels. CRISPR: Methods and Protocols guides readers through techniques that have been developed specifically for the analysis of CRISPR-Cas and techniques adapted from standard protocols of DNA, RNA and protein biology. Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Authoritative and cutting-edge, CRISPR: Methods and Protocols provides a broad list of tools and techniques to study the interdisciplinary aspects of the prokaryotic CRISPR-Cas defense systems.
Download or read book CRISPR Gene Editing written by Yonglun Luo and published by Humana Press. This book was released on 2019-04-23 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: This detailed volume guides readers through strategic planning and user-friendly guidelines in order to select the most suitable CRISPR-Cas system and target sites with high activity and specificity. Methods covering CRISPR gRNA design, CRISPR delivery, CRISPR activity quantification (indel quantification), and examples of applying CRISPR gene editing in human pluripotent stem cells, primary cells, gene therapy, and genetic screening are included. Written for the highly successful Methods in Molecular Biology series, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Authoritative and invaluable, CRISPR Gene Editing: Methods and Protocols will assist undergraduates, graduates, and researchers with detailed guidelines and methods for the vitally important CRISPR gene editing field. Chapter 3 is available open access under a CC BY 4.0 license via link.springer.com.
Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer. This book was released on 1976 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and dis· seminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) *at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the ac· tivity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volume were handled by an international publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 20 (thesis year 1975) a total of 10,374 theses titles from 28 Canadian and 239 United States universities. We are sure that this broader base for theses titles reported will greatly enhance the value of this important annual reference work. The organization of Volume 20 is identical to that of past years. It consists of theses titles arranged by discipline and by university within each discipline.
Download or read book Decommissioning of Research Reactors written by M. Laraia and published by IAEA. This book was released on 2006 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: Taking into consideration the work done to date on research reactor decommissioning, it is timely to provide an up to date basis for ongoing and intended activities in this field. This report reviews, from a historical perspective, decommissioning projects completed in recent years or under way, and assesses progress as well as open and new issues. It is meant to facilitate timely, safe and efficient completion of decommissioning projects for research reactors by highlighting technologies, and planning or management methodologies, and suggesting ways to overcome expected issues. The report includes a CD-ROM providing details of several hundred research reactor decommissioning projects.
Download or read book Measurement Technology for Safeguards and Materials Control written by Thomas R. Canada and published by . This book was released on 1980 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proposal to Create a Department of Homeland Security written by United States. Congress. House. Committee on the Judiciary. Subcommittee on Crime, Terrorism, and Homeland Security and published by . This book was released on 2002 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Liquid metals Handbook written by Carey B. Jackson and published by . This book was released on 1955 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gene Probes written by Marilena Aquino do Muro and published by Humana Press. This book was released on 2001-09-20 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: Senior scientists Marilena Aquino de Muro and Ralph Rapley have brought together an outstanding collection of time-tested protocols for designing and using genes probes in a wide variety of applications. The applications covered range from searching for specific genes in the human chromosome to the detection of microorganisms and their toxins in the environment and in food samples, as well as in the diagnosis of human disease. Helpful tutorials explain the principles of gene probe design, labeling, detection, target formation, and hybridization conditions.
Download or read book Analysis of Symbolic Data written by Hans-Hermann Bock and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the most recent methods for analyzing and visualizing symbolic data. It generalizes classical methods of exploratory, statistical and graphical data analysis to the case of complex data. Several benchmark examples from National Statistical Offices illustrate the usefulness of the methods. The book contains an extensive bibliography and a subject index.
Download or read book Information Security written by Agnes Hui Chan and published by Springer. This book was released on 2002-09-18 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt: As distinct from other security and cryptography conferences, the Information Security Conference (ISC) 2002 brought together individuals involved in a wide variety of different disciplines of information security to foster the exchange of ideas. The conference is an outgrowth of the Information Security Workshop, first held in Ishikawa, Japan 1997. ISC 2002 was held in Sao Paulo, Brazil, on September 30– October 2, 2002. The Program Committee considered 81 submissions of which 38 papers were accepted for presentation. These proceedings contain revised versions of the accepted papers. The papers provide a representative sample of both the variety and the truly international scope of information security research conducted currently. The topics addressed range from e-commerce protocols to access control and trust management, and to cryptography and cryptographic algorithms. Many people deserve our gratitude for their contribution to the success of the conference. We would like to thank the General Chair, Routo Terada, for overseeing the local arrangements, including registration and maintaining the conference website, and for the smooth running of the conference. We are grateful to Robbie Ye for his expert help in processing the electronic submissions, reviews and acceptance notifications. Robbie’s enthusiasm and energy greatly simplified the Program Committee’s task of conducting the on-line evaluation of the submitted papers under tight time constraints.
Download or read book The Art of Preserving All Kinds of Animal and Vegetable Substances for Several Years written by Nicolas Appert and published by . This book was released on 1811 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Passive Nondestructive Assay of Nuclear Materials written by Doug Reilly and published by . This book was released on 1991 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:
