An Introduction to the Periodic Law for General Chemistry Students.

ERIC Educational Resources Information Center

Schlenker, Richard M.

A brief introduction to the periodic table of the elements is presented. The periodic relationships are demonstrated through the use of seven tables which include a breakdown of the periodic table by groups or families, valence ring electron populations by period, electronic configurations of the elements, electron configurations of the elements…

Ecological periodic tables: Killer apps for translational ecology

EPA Science Inventory

The chemical periodic table, the Linnaean system of classification and the Hertzsprung-Russell diagram are information organizing structures that have transformed chemistry, biology and astronomy, respectively. Ecological periodic tables are information organizing structures wit...

Atomic adsorption on graphene with a single vacancy: systematic DFT study through the periodic table of elements

NASA Astrophysics Data System (ADS)

Pašti, Igor A.; Jovanović, Aleksandar; Dobrota, Ana S.; Mentus, Slavko V.; Johansson, Börje; Skorodumova, Natalia V.

Vacancies in graphene present sites of altered chemical reactivity and open possibilities to tune graphene properties by defect engineering. The understanding of chemical reactivity of such defects is essential for successful implementation of carbon materials in advanced technologies. We report the results of a systematic DFT study of atomic adsorption on graphene with a single vacancy for the elements of rows 1 to 6 of the Periodic Table of Elements (PTE), excluding lanthanides. The calculations have been performed using PBE, long-range dispersion interaction-corrected PBE (PBE+D2 and PBE+D3) and non-local vdW-DF2 functional. We find that most elements strongly bind to the vacancy, except for the elements of groups 11 and 12, and noble gases, for which the contribution of dispersion interaction to bonding is most significant. The strength of the interaction with the vacancy correlates with the cohesive energy of the elements in their stable phases: the higher the cohesive energy is the stronger bonding to the vacancy can be expected. As most atoms can be trapped at the SV site we have calculated the potentials of dissolution and found that in most cases the metals adsorbed at the vacancy are more "noble" than they are in their corresponding stable phases.

Atomic adsorption on graphene with a single vacancy: systematic DFT study through the periodic table of elements.

PubMed

Pašti, Igor A; Jovanović, Aleksandar; Dobrota, Ana S; Mentus, Slavko V; Johansson, Börje; Skorodumova, Natalia V

2018-01-03

Vacancies in graphene present sites of altered chemical reactivity and open possibilities to tune graphene properties by defect engineering. The understanding of chemical reactivity of such defects is essential for successful implementation of carbon materials in advanced technologies. We report the results of a systematic DFT study of atomic adsorption on graphene with a single vacancy for the elements of rows 1-6 of the periodic table of elements (PTE), excluding lanthanides. The calculations have been performed using the PBE, long-range dispersion interaction-corrected PBE (PBE+D2 and PBE+D3) and non-local vdW-DF2 functionals. We find that most elements strongly bind to the vacancy, except for the elements of groups 11 and 12, and noble gases, for which the contribution of dispersion interaction to bonding is most significant. The strength of the interaction with the vacancy correlates with the cohesive energy of the elements in their stable phases: the higher the cohesive energy is, the stronger bonding to the vacancy can be expected. As most atoms can be trapped at the SV site we have calculated the potentials of dissolution and found that in most cases the metals adsorbed at the vacancy are more "noble" than they are in their corresponding stable phases.

Ecological periodic tables: in principle and practice - January 2013

EPA Science Inventory

The chemical periodic table, the Linnaean system of classification and the Hertzsprung-Russell diagram are iconic information organizing structures in chemistry, biology and astronomy, respectively. Ecological periodic tables are information organizing structures for ecology. T...

Let Us Make the Table Periodic.

ERIC Educational Resources Information Center

Campbell, J. Arthur

1989-01-01

An approach to teaching the properties of the elements and their arrangement in the periodic table is suggested. Discussed are symbols for the elements, format of the table, and coding the properties of the elements on the table. (CW)

Online Periodic Table: A Cautionary Note

NASA Astrophysics Data System (ADS)

Izci, Kemal; Barrow, Lloyd H.; Thornhill, Erica

2013-08-01

The purpose of this study was (a) to evaluate ten online periodic table sources for their accuracy and (b) to compare the types of information and links provided to users. Limited studies have been reported on online periodic table (Diener and Moore 2011; Slocum and Moore in J Chem Educ 86(10):1167, 2009). Chemistry students' understanding of periodic table is vital for their success in chemistry, and the online periodic table has the potential to advance learners' understanding of chemical elements and fundamental chemistry concepts (Brito et al. in J Res Sci Teach 42(1):84-111, 2005). The ten sites were compared for accuracy of data with the Handbook of Chemistry and Physics (HCP, Haynes in CRC handbook of chemistry and physics: a ready-reference book of chemical and physical data. CRC Press, Boca Raton 2012). The 10 sites are the most visited periodic table Web sites available. Four different elements, carbon, gold, argon, and plutonium, were selected for comparison, and 11 different attributes for each element were identified for evaluating accuracy. A wide variation of accuracy was found among the 10 periodic table sources. Chemicool was the most accurate information provider with 66.67 % accuracy when compared to the HCP. The 22 types of information including meaning of name and use in industry and society provided by these sites were, also, compared. WebElements, "Chemicool", "Periodic Table Live", and "the Photographic Periodic Table of the Elements" were the most information providers, providing 86.36 % of information among the 10 Web sites. "WebElements" provides the most links among the 10 Web sites. It was concluded that if an individual teacher or student desires only raw physical data from element, the Internet might not be the best choice.

Ecological periodic tables for nekton and benthic macrofaunal community usage of estuarine habitats Slides

EPA Science Inventory

Ecological periodic tables for nekton and benthic macrofaunal community usage of estuarine habitats Steven P. Ferraro, U.S. Environmental Protection Agency, Newport, OR Background/Questions/Methods The chemical periodic table, the Linnaean system of classification, and the Her...

Discovering Periodicity: Hands-On, Minds-On Organization of the Periodic Table by Visualizing the Unseen

ERIC Educational Resources Information Center

Selco, Jodye; Bruno, Mary; Chan, Sue

2013-01-01

Understanding how the periodic table of elements is organized and how to read information from it is fundamental for understanding chemistry. Introductory chemistry courses usually include discussions detailing what elemental information can be determined by virtue of its position on the periodic table. Although many people have been exposed to…

31 CFR Appendix B to Part 359 - Composite Semiannual Rate Period Table

Code of Federal Regulations, 2010 CFR

2010-07-01

... 31 Money and Finance: Treasury 2 2010-07-01 2010-07-01 false Composite Semiannual Rate Period... SAVINGS BONDS, SERIES I Pt. 359, App. B Appendix B to Part 359—Composite Semiannual Rate Period Table 1. What months make up the composite semiannual rate period? You may use the following table to find when...

Life-table methods for detecting age-risk factor interactions in long-term follow-up studies.

PubMed

Logue, E E; Wing, S

1986-01-01

Methodological investigation has suggested that age-risk factor interactions should be more evident in age of experience life tables than in follow-up time tables due to the mixing of ages of experience over follow-up time in groups defined by age at initial examination. To illustrate the two approaches, age modification of the effect of total cholesterol on ischemic heart disease mortality in two long-term follow-up studies was investigated. Follow-up time life table analysis of 116 deaths over 20 years in one study was more consistent with a uniform relative risk due to cholesterol, while age of experience life table analysis was more consistent with a monotonic negative age interaction. In a second follow-up study (160 deaths over 24 years), there was no evidence of a monotonic negative age-cholesterol interaction by either method. It was concluded that age-specific life table analysis should be used when age-risk factor interactions are considered, but that both approaches yield almost identical results in absence of age interaction. The identification of the more appropriate life-table analysis should be ultimately guided by the nature of the age or time phenomena of scientific interest.

The Living Periodic Table

ERIC Educational Resources Information Center

Nahlik, Mary Schrodt

2005-01-01

To help make the abstract world of chemistry more concrete eighth-grade students, the author has them create a living periodic table that can be displayed in the classroom or hallway. This display includes information about the elements arranged in the traditional periodic table format, but also includes visual real-world representations of the…

The Different Periodic Tables of Dmitrii Mendeleev

ERIC Educational Resources Information Center

Laing, Michael

2008-01-01

Between 1869 and 1905 the Russian chemist Dmitrii Mendeleev published several tables with different arrangements of the chemical elements. Four of these are compared with periodic tables by Russian scientists from 1934 and 1969. The difficulties caused by the lanthanoid elements are clearly seen in the table of 1905, which satisfactorily includes…

Periodic Table of Students.

ERIC Educational Resources Information Center

Johnson, Mike

1998-01-01

Presents an exercise in which an eighth-grade science teacher decorated the classroom with a periodic table of students. Student photographs were arranged according to similarities into vertical columns. Students were each assigned an atomic number according to their placement in the table. The table is then used to teach students about…

Elegant grapheme-phoneme correspondence: a periodic chart and singularity generalization unify decoding.

PubMed

Gates, Louis

2018-04-01

The accompanying article introduces highly transparent grapheme-phoneme relationships embodied within a Periodic table of decoding cells, which arguably presents the quintessential transparent decoding elements. The study then folds these cells into one highly transparent but simply stated singularity generalization-this generalization unifies the decoding cells (97% transparency). Deeper, the periodic table and singularity generalization together highlight the connectivity of the periodic cells. Moreover, these interrelated cells, coupled with the singularity generalization, clarify teaching targets and enable efficient learning of the letter-sound code. This singularity generalization, in turn, serves as a model for creating unified but easily stated subordinate generalizations for any one of the transparent cells or groups of cells shown within the tables. The article then expands the periodic cells into two tables of teacher-ready sample word lists-one table includes sample words for the basic and phonogram vowel cells, and the other table embraces word samples for the transparent consonant cells. The paper concludes with suggestions for teaching the cellular transparency embedded within reoccurring isolated words and running text to promote decoding automaticity of the periodic cells.

Medical Surveillance Monthly Report. Volume 17, Number 5, May 2010

DTIC Science & Technology

2010-05-01

vehicle-related death rates between those that were and were not part of holiday periods (Table 5). Holiday vs. non-holiday periods: During all federal...holiday periods) compared to all non-holiday periods. Of note, death rates were lower two days before and one day after holiday periods compared...related death rates were comparable between the fi rst 30 days post-deployment and all other non-deployed times (Table 7). Editorial comment:Table 7

A common periodic table of codons and amino acids.

PubMed

Biro, J C; Benyó, B; Sansom, C; Szlávecz, A; Fördös, G; Micsik, T; Benyó, Z

2003-06-27

A periodic table of codons has been designed where the codons are in regular locations. The table has four fields (16 places in each) one with each of the four nucleotides (A, U, G, C) in the central codon position. Thus, AAA (lysine), UUU (phenylalanine), GGG (glycine), and CCC (proline) were placed into the corners of the fields as the main codons (and amino acids) of the fields. They were connected to each other by six axes. The resulting nucleic acid periodic table showed perfect axial symmetry for codons. The corresponding amino acid table also displaced periodicity regarding the biochemical properties (charge and hydropathy) of the 20 amino acids and the position of the stop signals. The table emphasizes the importance of the central nucleotide in the codons and predicts that purines control the charge while pyrimidines determine the polarity of the amino acids. This prediction was experimentally tested.

"ChemMend": A Card Game to Introduce and Explore the Periodic Table While Engaging Students' Interest

ERIC Educational Resources Information Center

Martí-Centelles, Vicente; Rubio-Magnieto, Jenifer

2014-01-01

Deep knowledge of the periodic table is one of the most important keys to understand the basic principles of Chemistry. Memorizing the elements of the groups and periods is one of the most commonly used strategies to learn the position of each element in the periodic table; nevertheless, it is a hard task for most students. The use of card games…

Nonconventional Methods in Teaching Matter, Atoms, Molecules and the Periodic Table for Nonmajor Students.

ERIC Educational Resources Information Center

Cherif, Abour A.; Adams, Gerald E.; Cannon, Charles E.

1997-01-01

Describes several activities used to teach students from middle school age to college nonmajors about the nature of matter, atoms, molecules and the periodic table. Strategies integrate such approaches as hands-on activities, visualization, writing, demonstrations, role play, and guided inquiry. For example, the periodic table is viewed as a town…

31 CFR Appendix B to Part 359 - Composite Semiannual Rate Period Table

Code of Federal Regulations, 2014 CFR

2014-07-01

... 31 Money and Finance: Treasury 2 2014-07-01 2014-07-01 false Composite Semiannual Rate Period Table B Appendix B to Part 359 Money and Finance: Treasury Regulations Relating to Money and Finance... SAVINGS BONDS, SERIES I Pt. 359, App. B Appendix B to Part 359—Composite Semiannual Rate Period Table 1...

Online Periodic Table: A Cautionary Note

ERIC Educational Resources Information Center

Izci, Kemal; Barrow, Lloyd H.; Thornhill, Erica

2013-01-01

The purpose of this study was (a) to evaluate ten online periodic table sources for their accuracy and (b) to compare the types of information and links provided to users. Limited studies have been reported on online periodic table (Diener and Moore 2011; Slocum and Moore in "J Chem Educ" 86(10):1167, 2009). Chemistry students'…

Relating Functional Groups to the Periodic Table

ERIC Educational Resources Information Center

Struyf, Jef

2009-01-01

An introduction to organic chemistry functional groups and their ionic variants is presented. Functional groups are ordered by the position of their specific (hetero) atom in the periodic table. Lewis structures are compared with their corresponding condensed formulas. (Contains 5 tables.)

An Application-Oriented Periodic Table of the Elements.

ERIC Educational Resources Information Center

Bouma, J.

1989-01-01

A brief history of several of the early forms of the periodic table of the elements are discussed including those of Mendeleev, Meyer, Hubbard, Gmelin, Von Antropoff, and Strong. A more every-day-life form of the table is presented. (CW)

Transferable pseudoclassical electrons for aufbau of atomic ions.

PubMed

Ekesan, Solen; Kale, Seyit; Herzfeld, Judith

2014-06-05

Generalizing the LEWIS reactive force field from electron pairs to single electrons, we present LEWIS• in which explicit valence electrons interact with each other and with nuclear cores via pairwise interactions. The valence electrons are independently mobile particles, following classical equations of motion according to potentials modified from Coulombic as required to capture quantum characteristics. As proof of principle, the aufbau of atomic ions is described for diverse main group elements from the first three rows of the periodic table, using a single potential for interactions between electrons of like spin and another for electrons of unlike spin. The electrons of each spin are found to distribute themselves in a fashion akin to the major lobes of the hybrid atomic orbitals, suggesting a pointillist description of the electron density. The broader validity of the LEWIS• force field is illustrated by predicting the vibrational frequencies of diatomic and triatomic hydrogen species. Copyright © 2014 Wiley Periodicals, Inc.

Reflections on Teaching Periodic Table Concepts: A Case Study of Selected Schools in South Africa

ERIC Educational Resources Information Center

Mokiwa, Hamza Omari

2017-01-01

The Periodic Table of Elements is central to the study of modern Physics and Chemistry. It is however, considered by teachers as difficult to teach. This paper reports on a case study exploring reflections on teaching periodic table concepts in five secondary schools from South Africa. Qualitative methodology of interviews and document analysis…

40 CFR Table 6 to Subpart Aaaaa of... - Periodic Monitoring for Compliance With Opacity and Visible Emissions Limits

Code of Federal Regulations, 2013 CFR

2013-07-01

... 40 Protection of Environment 14 2013-07-01 2013-07-01 false Periodic Monitoring for Compliance With Opacity and Visible Emissions Limits 6 Table 6 to Subpart AAAAA of Part 63 Protection of... Hazardous Air Pollutants for Lime Manufacturing Plants Pt. 63, Subpt. AAAAA, Table 6 Table 6 to Subpart...

40 CFR Table 6 to Subpart Aaaaa of... - Periodic Monitoring for Compliance With Opacity and Visible Emissions Limits

Code of Federal Regulations, 2010 CFR

2010-07-01

... 40 Protection of Environment 13 2010-07-01 2010-07-01 false Periodic Monitoring for Compliance With Opacity and Visible Emissions Limits 6 Table 6 to Subpart AAAAA of Part 63 Protection of... Hazardous Air Pollutants for Lime Manufacturing Plants Part 63, Subpt. AAAAA, Table 6 Table 6 to Subpart...

40 CFR Table 6 to Subpart Aaaaa of... - Periodic Monitoring for Compliance With Opacity and Visible Emissions Limits

Code of Federal Regulations, 2014 CFR

2014-07-01

... 40 Protection of Environment 14 2014-07-01 2014-07-01 false Periodic Monitoring for Compliance With Opacity and Visible Emissions Limits 6 Table 6 to Subpart AAAAA of Part 63 Protection of... Hazardous Air Pollutants for Lime Manufacturing Plants Pt. 63, Subpt. AAAAA, Table 6 Table 6 to Subpart...

40 CFR Table 6 to Subpart Aaaaa of... - Periodic Monitoring for Compliance With Opacity and Visible Emissions Limits

Code of Federal Regulations, 2011 CFR

2011-07-01

... 40 Protection of Environment 13 2011-07-01 2011-07-01 false Periodic Monitoring for Compliance With Opacity and Visible Emissions Limits 6 Table 6 to Subpart AAAAA of Part 63 Protection of... Hazardous Air Pollutants for Lime Manufacturing Plants Part 63, Subpt. AAAAA, Table 6 Table 6 to Subpart...

40 CFR Table 6 to Subpart Aaaaa of... - Periodic Monitoring for Compliance With Opacity and Visible Emissions Limits

Code of Federal Regulations, 2012 CFR

2012-07-01

... 40 Protection of Environment 14 2012-07-01 2011-07-01 true Periodic Monitoring for Compliance With Opacity and Visible Emissions Limits 6 Table 6 to Subpart AAAAA of Part 63 Protection of Environment... Pollutants for Lime Manufacturing Plants Part 63, Subpt. AAAAA, Table 6 Table 6 to Subpart AAAAA of Part 63...

The redoubtable ecological periodic table

EPA Science Inventory

Ecological periodic tables are repositories of reliable information on quantitative, predictably recurring (periodic) habitat–community patterns and their uncertainty, scaling and transferability. Their reliability derives from their grounding in sound ecological principle...

Turning the table on advice programs for parents: Using placemats to enhance family interaction at restaurants

PubMed Central

Green, Richard B.; Hardison, William L.; Greene, Brandon F.

1984-01-01

There are many opportunities in a family's daily routine to enrich the interactions among its members. One such opportunity arises at family restaurants. Surveys of restaurant personnel and customers suggested the possibility of enriching family interactions by redesigning indigenous materials such as table placemats. Accordingly, we developed Table-Talk placemats that provided conversational topics and illustrated games in which the entire family could participate. After some testing of these placemats in a preschool, a field experiment was conducted with families dining in restaurants. Table-Talk placements occasioned more social and educational dialogue among family members than either traditional-placemat or no-material conditions. Social validation ratings provided by mental health counselors and the parents suggested that Table-Talk placemats occasioned healthy and enjoyable interactions among family members. PMID:16795680

Experiences with Interactive Multi-touch Tables

NASA Astrophysics Data System (ADS)

Fikkert, Wim; Hakvoort, Michiel; van der Vet, Paul; Nijholt, Anton

Interactive multi-touch tables can be a powerful means of communication for collaborative work as well as an engaging environment for competition. Through enticing gameplay we have evaluated user experience on competitive gameplay, collaborative work and musical expression. In addition, we report on our extensive experiences with two types of interactive multi-touch tables and we introduce a software framework that abstracts from their technical differences.

Superconductivity theory applied to the periodic table of the elements

DOE Office of Scientific and Technical Information (OSTI.GOV)

Elifritz, T.L.

1994-12-31

The modern theory of superconductivity, based upon the BCS to Bose-Einstein transition, is applied to the periodic table of the elements, in order to isolate the essential features of high temperature superconductivity and to predict its occurrence within the periodic table. It is predicted that Sodium-Ammonia, Sodium Zinc Phosphide and Bismuth (I) Iodide are promising materials for experimental explorations of high temperature superconductivity.

IUPAC Periodic Table of the Isotopes

USGS Publications Warehouse

Holden, N.E.; Coplen, T.B.; Böhlke, J.K.; Wieser, M.E.; Singleton, G.; Walczyk, T.; Yoneda, S.; Mahaffy, P.G.; Tarbox, L.V.

2011-01-01

For almost 150 years, the Periodic Table of the Elements has served as a guide to the world of elements by highlighting similarities and differences in atomic structure and chemical properties. To introduce students, teachers, and society to the existence and importance of isotopes of the chemical elements, an IUPAC Periodic Table of the Isotopes (IPTI) has been prepared and can be found as a supplement to this issue.

Superconductivity theory applied to the periodic table of the elements

NASA Technical Reports Server (NTRS)

Elifritz, Thomas Lee

1995-01-01

The modern theory of superconductivity, based upon the BCS to Bose-Einstein transition is applied to the periodic table of the elements, in order to isolate the essential features of of high temperature superconductivity and to predict its occurrence with the periodic table. It is predicted that Sodium-Ammonia, Sodium Zinc Phosphide and Bismuth (I) Iodide are promising materials for experimental explorations of high temperature superconductivity.

An Effective Method of Introducing the Periodic Table as a Crossword Puzzle at the High School Level

ERIC Educational Resources Information Center

Joag, Sushama D.

2014-01-01

A simple method to introduce the modern periodic table of elements at the high school level as a game of solving a crossword puzzle is presented here. A survey to test the effectiveness of this new method relative to the conventional method, involving use of a wall-mounted chart of the periodic table, was conducted on a convenience sample. This…

A new way to experience the International Gastric Cancer Association Congress: the Web Round Tables.

PubMed

Morgagni, Paolo; Verlato, Giuseppe; Marrelli, Daniele; Roviello, Franco; de Manzoni, Giovanni

2014-10-01

In an attempt to attract a wider diversity of professionals to the 10th International Gastric Cancer Association Congress (IGCC) held in June 2013, the Scientific Committee of the conference organized a number of pre-congress Web Round Tables to discuss cutting-edge topics relating to gastric cancer treatment. Twenty Web Round Tables, each coordinated by a different chairman, were proposed on the IGCC Website 1 year before the congress. Each chairman identified a number of studies related to the theme of his/her Round Table and invited corresponding authors to send an update of their conclusions in light of their subsequent experience, which would then form the basis of discussion of the Web Round Tables. The chairmen posted several questions regarding these updates on the web and opened a forum for a period of 1-2 months. The forum was free and specifically intended for congress participants. Fifty-one (9.9 %) of the 516 authors contacted took part in the initiative. Two hundred fifty participants from 21 countries joined the forum discussion and posted 671 comments. The Web Round Tables were viewed 15,810 times while the forum was open. Overall, the Web Round Tables aroused considerable interest, especially among young professionals working in the area of gastric cancer who had the opportunity to contact and interact with experts in what often turned out to be an interesting and lively exchange of views. All the discussions are now freely available for consultation on the IGCC website. The Web Round Table experience was presented, with great success, during the conference at special afternoon sessions.

Hillslope-Riparian-Streamflow Interactions in a Discontinuous Permafrost Alpine Environment

NASA Astrophysics Data System (ADS)

Carey, S. K.

2004-12-01

Hillslope-riparian-streamflow interactions are poorly characterized in mountainous discontinuous permafrost environments. Permafrost underlain soils have a distinct soil profile, characterized by thick near-surface organic horizons atop ice-rich mineral substrates, whereas slopes without permafrost have thinner or absent organic soils overlying well drained mineral horizons. Riparian areas occur at the base of both seasonally frozen and permafrost slopes, yet a stronger hydrologic and soil transition occurs at slope bases with only seasonal frost. In a subarctic alpine catchment within the Wolf Creek Research Basin, Yukon, Canada, experiments were conducted between 2001 and 2003 to evaluate linkages along the slope-riparian-stream continuum during melt and post-melt periods. Water table, hydraulic head, stable isotope (d2H, d18O) and simple geochemical (pH, SpC, DOC) data were collected along transects during melt and summer periods. In soils with only seasonal frost, there was a downward piezometric gradient in slopes and upward gradient in riparian areas during melt. In contrast, permafrost soils did not show a recharge/discharge gradient between the slope and riparian zone. DOC declined and SpC increased with depth at all sites during melt. DOC was lower in riparian zones and areas without organic soils. SpC declined in soils as dilute meltwater entered the soil, yet it was difficult to establish spatial relations due to differences in melt timing. The similarity in stable isotope composition among sites indicated that the slopes were well flushed with snowmelt water to depth. DOC in streamflow was greatest on the ascending freshet hydrograph, and declined rapidly following melt. Streamflow SpC declined dramatically in response to dilute meltwater inputs and a decline in stream pH indicates flowpaths through organic horizons. Following melt, DOC concentrations declined rapidly in both slopes and riparian areas. In summer, water tables lowered in seasonally frozen slopes, yet an upward hydraulic gradient and near-surface water table was maintained in the riparian area. In permafrost slopes, water tables fell into mineral soils, increasing SpC and reducing DOC. Riparian water tables remained high and DOC was greater than the seasonally frozen soils, yet riparian zone hydraulic gradient reversed suggesting a small recharge gradient. In permafrost soil, riparian zone DOC was an order of magnitude higher than seasonally frozen riparian zones, which had DOC concentrations similar to streamflow. The similarity in stable isotope ratios among sites throughout the summer indicated that soil waters were dominated by water supplied during melt period. Rainfall waters had little long-term effect on slope and riparian isotopic ratios. Mixing analysis of geochemical and isotopic parameters indicates that during melt, most water was supplied via near surface organic layers, whereas later in the year, subsurface pathways predominated. Permafrost slope-riparian zones have a different hydraulic and geochemical interaction than seasonally frozen ones, yet their respective contribution to streamflow during different times of the year remains unclear at this time.

A periodic table of coiled-coil protein structures.

PubMed

Moutevelis, Efrosini; Woolfson, Derek N

2009-01-23

Coiled coils are protein structure domains with two or more alpha-helices packed together via interlacing of side chains known as knob-into-hole packing. We analysed and classified a large set of coiled-coil structures using a combination of automated and manual methods. This led to a systematic classification that we termed a "periodic table of coiled coils," which we have made available at http://coiledcoils.chm.bris.ac.uk/ccplus/search/periodic_table. In this table, coiled-coil assemblies are arranged in columns with increasing numbers of alpha-helices and in rows of increased complexity. The table provides a framework for understanding possibilities in and limits on coiled-coil structures and a basis for future prediction, engineering and design studies.

The Role of Triads in the Evolution of the Periodic Table: Past and Present

NASA Astrophysics Data System (ADS)

Scerri, Eric

2008-04-01

The purpose of this article is to propose a new design for the presentation of the periodic system of the elements. It is a system that highlights the fundamental importance of elements as basic substances rather than elements as simple substances, a distinction that is explained in the article. The proposed table is a variant of the Janet or left-step periodic table. Furthermore the fundamental nature of atomic number triads of elements is put to use in obtaining a new perfect triad by relocating hydrogen among the halogens to give the triad H, F, Cl. The relative virtues of this table, as compared with the medium-long form and the left-step table, are discussed.

Streamflow characteristics of streams in southeastern Afghanistan

USGS Publications Warehouse

Vining, Kevin C.

2010-01-01

Statistical summaries of streamflow data for all historical streamgaging stations that have available data in the southeastern Afghanistan provinces of Ghazni, Khost, Logar, Paktya, and Wardak, and a portion of Kabul Province are presented in this report. The summaries for each streamgaging station include a station desciption, table of statistics of monthly and annual mean discharges, table of monthly and annual flow duration, table of probability of occurrence of annual high discharges, table of probability of occurrence of annual low discharges, table of annual peak discharge and corresponding gage height for the period of record, and table of monthly and annual mean discharges for the period of record.

40 CFR 79.5 - Periodic reporting requirements.

Code of Federal Regulations, 2014 CFR

2014-07-01

... 40 Protection of Environment 17 2014-07-01 2014-07-01 false Periodic reporting requirements. 79.5...) REGISTRATION OF FUELS AND FUEL ADDITIVES General Provisions § 79.5 Periodic reporting requirements. (a) Fuel... table: Table 1 to § 79.5—Quarterly Reporting Deadlines Calendar quarter Time period covered Quartely...

From Periodic Properties to a Periodic Table Arrangement

ERIC Educational Resources Information Center

Besalú, Emili

2013-01-01

A periodic table is constructed from the consideration of periodic properties and the application of the principal components analysis technique. This procedure is useful for objects classification and data reduction and has been used in the field of chemistry for many applications, such as lanthanides, molecules, or conformers classification.…

The Periodic Table CD.

ERIC Educational Resources Information Center

Banks, Alton J.; Holmes, Jon L.

1995-01-01

Describes the characteristics of the digitized version of The Periodic Table Videodisc. Provides details about the organization of information and access to the data via Macintosh and Windows computers. (DDR)

Element-ary Development.

ERIC Educational Resources Information Center

Schamp, Homer W., Jr.

1989-01-01

Describes the historic development of the periodic table from the four-element theory to the Lavoisier's table. Presents a table listing the old and new names of chemicals and the Lavoisier's table of elements. Lists two references. (YP)

Ecological periodic tables: in principle and practice (in OIKOS)

EPA Science Inventory

“Science is organized knowledge.” Immanuel Kant (1724–1804) Ecological periodic tables are an information organizing system with categorical habitat types as elements and predictably recurring (periodic) properties of a target biotic community, such as its relative species rich...

On the reliability, uncertainty, scaling and transferability of ecological production functions in ecological periodic tables

EPA Science Inventory

Ecological periodic tables are an information organizing system. Their elements are categorical habitat types. Their attributes are quantitative, predictably recurring (periodic) properties of a target biotic community. Since they translate habitats as inputs into measures of ...

Implementing a Computer Program that Captures Students' Work on Customizable, Periodic-System Data Assignments

ERIC Educational Resources Information Center

Wiediger, Susan D.

2009-01-01

The periodic table and the periodic system are central to chemistry and thus to many introductory chemistry courses. A number of existing activities use various data sets to model the development process for the periodic table. This paper describes an image arrangement computer program developed to mimic a paper-based card sorting periodic table…

Stream gage descriptions and streamflow statistics for sites in the Tigris River and Euphrates River Basins, Iraq

USGS Publications Warehouse

Saleh, Dina K.

2010-01-01

Statistical summaries of streamflow data for all long-term streamflow-gaging stations in the Tigris River and Euphrates River Basins in Iraq are presented in this report. The summaries for each streamflow-gaging station include (1) a station description, (2) a graph showing annual mean discharge for the period of record, (3) a table of extremes and statistics for monthly and annual mean discharge, (4) a graph showing monthly maximum, minimum, and mean discharge, (5) a table of monthly and annual mean discharges for the period of record, (6) a graph showing annual flow duration, (7) a table of monthly and annual flow duration, (8) a table of high-flow frequency data (maximum mean discharge for 3-, 7-, 15-, and 30-day periods for selected exceedance probabilities), and (9) a table of low-flow frequency data (minimum mean discharge for 3-, 7-, 15-, 30-, 60-, 90-, and 183-day periods for selected non-exceedance probabilities).

Mathematics of Periodic Tables for Benzenoid Hydrocarbons.

PubMed

Dias, Jerry Ray

2007-01-01

The upper and lower bounds for invariants of polyhex systems based on the Harary and Harborth inequalities are studied. It is shown that these invariants are uniquely correlated by the Periodic Table for Benzenoid Hydrocarbons. A modified periodic table for total resonant sextet (TRS) benzenoids based on the invariants of Ds and r(empty) is presented; Ds is the number of disconnections among the empty rings for fused TRS benzenoid hydrocarbons. This work represents a contribution toward deciphering the topological information content of benzenoid formulas.

Periodic Properties and Inquiry: Student Mental Models Observed during a Periodic Table Puzzle Activity

ERIC Educational Resources Information Center

Larson, Kathleen G.; Long, George R.; Briggs, Michael W.

2012-01-01

The mental models of both novice and advanced chemistry students were observed while the students performed a periodic table activity. The mental model framework seems to be an effective way of analyzing student behavior during learning activities. The analysis suggests that students do not recognize periodic trends through the examination of…

Trust Threshold Based Public Key Management in Mobile Ad Hoc Networks

DTIC Science & Technology

2016-03-05

should operate in a self-organized way. Capkun t al. [15] proposed a certificate-based self-organized pub- c key management for MANETs by removing...period allo node started with ignorance interact with other nodes, th not reach T th Table 2 Attack behavior for operations . Operation Attack...section, we discuss the core operations o CTPKM as illustrated by Fig. 1 . Each mobile entity is able t communicate with other entities using public

Theodore William Richards and the Periodic Table

ERIC Educational Resources Information Center

Conant, James B.

1970-01-01

Discusses the contribution of Theodore Richards to the accurate determination of atomic weights of copper and other elements; his major contribution was to the building of the definitive periodic table of the elements. (BR)

Interaction between groundwater and trees in an arid site: Potential impacts of climate variation and groundwater abstraction on trees

NASA Astrophysics Data System (ADS)

Yin, Lihe; Zhou, Yangxiao; Huang, Jinting; Wenninger, Jochen; Zhang, Eryong; Hou, Guangcai; Dong, Jiaqiu

2015-09-01

The understanding of the interaction between groundwater and trees is vital for sustainable groundwater use and maintenance of a healthy ecosystem in arid regions. The short- and long-term groundwater contribution to tree water use was investigated using the HYDRUS-1D model and stable isotopes. For the short-term simulation, the ratio between the actual transpiration (Ta) and potential transpiration (Tp) approached almost ∼1.0 due to the constant groundwater uptake. The results from the short-term simulation indicated that the groundwater contribution to tree water use ranged between 53% and 56% in the dry season (May-June) and 16-19% in the wet period (August-September). Isotopic analysis indicated that groundwater contributed to 45% of plant water use in the dry season, decreasing to 4-12% during the wet period. Because of canopy interception and transpiration, groundwater recharge only occurred after heavy rainfall and accounted for 3-8% of the total heavy rainfall. For the long-term simulation, Ta/Tp ranged between 0.91 and 1.00 except in 2007 (0.78), when the water table declined because of groundwater abstraction. In the scenario simulation for deep water table conditions caused by anthropogenic activities, Ta/Tp ranged between 0.09 and 0.40 (mean = 0.22) that is significantly lower than the values in the natural conditions. In conclusion, vegetation restoration in arid zones should be cautious as over-planting of trees will decrease the groundwater recharge and potentially cause a rapid drop in water table levels, which in turn may result in the death of planted trees. Trees adapt to arid regions by adopting root patterns that allow soil water uptake by shallow roots and groundwater use by deep roots, thus climatic variation itself may not bring severe negative impact on trees. However, anthropogenic activities, such as groundwater abstraction, will result in significant water table decline that will reduce actual transpiration of trees significantly according to the results from the scenario simulation.

Toward an Organic Chemist's Periodic Table.

ERIC Educational Resources Information Center

Hall, H. K., Jr.

1980-01-01

An analogy between electron transfer reactions of the elements and those of organic molecules is offered. Examples of organic electron transfer reactions are presented. The rationale of constructing an organic chemists' periodic table is also discussed. (HM)

Recommended Format for the Periodic Table of the Elements.

ERIC Educational Resources Information Center

Loening, K. L.

1984-01-01

Presents a new, recommended format for the periodic table which does not use the letters A and B to designate subgroups of elements. Also describes events leading to the adoption of this recommendation. (JM)

Comparison of Sedentary Behaviors in Office Workers Using Sit-Stand Tables With and Without Semiautomated Position Changes.

PubMed

Barbieri, Dechristian França; Srinivasan, Divya; Mathiassen, Svend Erik; Oliveira, Ana Beatriz

2017-08-01

We compared usage patterns of two different electronically controlled sit-stand tables during a 2-month intervention period among office workers. Office workers spend most of their working time sitting, which is likely detrimental to health. Although the introduction of sit-stand tables has been suggested as an effective intervention to decrease sitting time, limited evidence is available on usage patterns of sit-stand tables and whether patterns are influenced by table configuration. Twelve workers were provided with standard sit-stand tables (nonautomated table group) and 12 with semiautomated sit-stand tables programmed to change table position according to a preset pattern, if the user agreed to the system-generated prompt (semiautomated table group). Table position was monitored continuously for 2 months after introducing the tables, as a proxy for sit-stand behavior. On average, the table was in a "sit" position for 85% of the workday in both groups; this percentage did not change significantly during the 2-month period. Switches in table position from sit to stand were, however, more frequent in the semiautomated table group than in the nonautomated table group (0.65 vs. 0.29 hr -1 ; p = .001). Introducing a semiautomated sit-stand table appeared to be an attractive alternative to a standard sit-stand table, because it led to more posture variation. A semiautomated sit-stand table may effectively contribute to making postures more variable among office workers and thus aid in alleviating negative health effects of extensive sitting.

Towards molecular medicine: a case for a biological periodic table.

PubMed

Gawad, Charles

2005-01-01

The recently amplified pace of development in the technologies to study both normal and aberrant cellular physiology has allowed for a transition from the traditional reductionist approaches to global interrogations of human biology. This transformation has created the anticipation that we will soon more effectively treat or contain most types of diseases through a 'systems-based' approach to understanding and correcting the underlying etiology of these processes. However, to accomplish these goals, we must first have a more comprehensive understanding of all the elements involved in human cellular physiology, as well as why and how they interact. With the vast number of biological components that have and are being discovered, creating methods with modern computational techniques to better organize biological elements is the next requisite step in this process. This article aims to articulate the importance of the organization of chemical elements into a periodic table had on the conversion of chemistry into a quantitative, translatable science, as well as how we can apply the lessons learned in that transition to the current transformation taking place in biology.

Tilt Table Therapies for Patients with Severe Disorders of Consciousness: A Randomized, Controlled Trial

PubMed Central

Krewer, Carmen; Luther, Marianne; Koenig, Eberhard; Müller, Friedemann

2015-01-01

One major aim of the neurological rehabilitation of patients with severe disorders of consciousness (DOC) is to enhance patients’ arousal and ability to communicate. Mobilization into a standing position by means of a tilt table has been shown to improve their arousal and awareness. However, due to the frequent occurrence of syncopes on a tilt table, it is easier to accomplish verticalization using a tilt table with an integrated stepping device. The objective of this randomized controlled clinical trial was to evaluate the effectiveness of a tilt table therapy with or without an integrated stepping device on the level of consciousness. A total of 50 participants in vegetative or minimally conscious states 4 weeks to 6 month after injury were treated with verticalization during this randomized controlled trial. Interventions involved ten 1-hour sessions of the specific treatment over a 3-week period. Blinded assessors made measurements before and after the intervention period, as well as after a 3-week follow-up period. The coma recovery scale-revised (CRS-R) showed an improvement by a median of 2 points for the group receiving tilt table with integrated stepping (Erigo). The rate of recovery of the group receiving the conventional tilt table therapy significantly increased by 5 points during treatment and by an additional 2 points during the 3-week follow-up period. Changes in spasticity did not significantly differ between the two intervention groups. Compared to the conventional tilt table, the tilt table with integrated stepping device failed to have any additional benefit for DOC patients. Verticalization itself seems to be beneficial though and should be administered to patients in DOC in early rehabilitation. Trial Registration: Current Controlled Trials Ltd (www.controlled-trials.com), identifier number ISRCTN72853718 PMID:26623651

Tilt Table Therapies for Patients with Severe Disorders of Consciousness: A Randomized, Controlled Trial.

PubMed

Krewer, Carmen; Luther, Marianne; Koenig, Eberhard; Müller, Friedemann

2015-01-01

One major aim of the neurological rehabilitation of patients with severe disorders of consciousness (DOC) is to enhance patients' arousal and ability to communicate. Mobilization into a standing position by means of a tilt table has been shown to improve their arousal and awareness. However, due to the frequent occurrence of syncopes on a tilt table, it is easier to accomplish verticalization using a tilt table with an integrated stepping device. The objective of this randomized controlled clinical trial was to evaluate the effectiveness of a tilt table therapy with or without an integrated stepping device on the level of consciousness. A total of 50 participants in vegetative or minimally conscious states 4 weeks to 6 month after injury were treated with verticalization during this randomized controlled trial. Interventions involved ten 1-hour sessions of the specific treatment over a 3-week period. Blinded assessors made measurements before and after the intervention period, as well as after a 3-week follow-up period. The coma recovery scale-revised (CRS-R) showed an improvement by a median of 2 points for the group receiving tilt table with integrated stepping (Erigo). The rate of recovery of the group receiving the conventional tilt table therapy significantly increased by 5 points during treatment and by an additional 2 points during the 3-week follow-up period. Changes in spasticity did not significantly differ between the two intervention groups. Compared to the conventional tilt table, the tilt table with integrated stepping device failed to have any additional benefit for DOC patients. Verticalization itself seems to be beneficial though and should be administered to patients in DOC in early rehabilitation. Trial Registration: Current Controlled Trials Ltd (www.controlled-trials.com), identifier number ISRCTN72853718.

Ecological periodic tables: In principle and practice

EPA Science Inventory

The chemical periodic table, the Linnaean system of classification and the Hertzsprung-Russell diagram are iconic information organizing structure in chemistry, biology and astronomy, respectively, because they are simple, exceptionally useful and they foster the expansion of sci...

Setting the Periodic Table.

ERIC Educational Resources Information Center

Saturnelli, Annette

1985-01-01

Examines problems resulting from different forms of the periodic table, indicating that New York State schools use a form reflecting the International Union of Pure and Applied Chemistry's 1984 recommendations. Other formats used and reasons for standardization are discussed. (DH)

The Periodic Table as a Tool for Teaching the Nature of Science

ERIC Educational Resources Information Center

Peters, Erin E.; Sterling, Donna R.

2008-01-01

Teaching the connectedness of relationships among elements in the Periodic Table is often an overwhelming task, and can result in shallow student understanding. This article contains a series of activities that evoke student prior knowledge about classification, leads them to discover periodicity and other relationships among the characteristics…

The complex relationships between methane emissions and water table at an ombrotrophic bog

NASA Astrophysics Data System (ADS)

Humphreys, Elyn; Roulet, Nigel; Moore, Tim

2017-04-01

Broad spatial and temporal variations in methane emissions from peatlands have been related to many variables including water table position, temperature and vegetation characteristics and functioning. In general, wetter peatlands tend to have greater methane emissions. However, over shorter periods of time and space, the relationship between water table and methane emissions can reverse, show hysteresis or be absent entirely. These relationships are investigated at the Mer Bleue Bog, a temperate ombrotrophic bog near Ottawa, Canada. Six years of concurrent growing season eddy covariance and automated chamber fluxes reveal the expected broad patterns. During the wettest growing season, the water table remained within 40 cm of the bog's hummock surfaces. Methane emissions were upwards of 20 to 45 mg C m-2 d-1 and exceeded the emission rates from two drier growing seasons which saw periods where the water table dropped to nearly 80 cm below the hummock surface. In those periods, methane emission rates declined to about 5 mg C m-2 d-1 or less. Lawn plots with aerenchymatous Eriophorum vegetation and high water tables had greatest emissions (exceeding 200 mg C m-2 d-1) compared to hummock plots vegetated by ericaceous shrubs, which had emissions rates similar to those measured by eddy covariance. However, within a growing season, hysteresis and inverse relationships between water table and methane emissions were observed at both ecosystem and chamber plot scales. These included periods between rainfall events where methane emissions increased while the water table deepened. The potential roles of methane production, consumption, storage and transport processes on these patterns will be discussed.

Bioinorganic Life and Neural Activity: Toward a Chemistry of Consciousness?

PubMed

Chang, Christopher J

2017-03-21

Identifying what elements are required for neural activity as potential path toward consciousness, which represents life with the state or quality of awareness, is a "Holy Grail" of chemistry. As life itself arises from coordinated interactions between elements across the periodic table, the majority of which are metals, new approaches for analysis, binding, and control of these primary chemical entities can help enrich our understanding of inorganic chemistry in living systems in a context that is both universal and personal.

The Periodic Table. Physical Science in Action[TM]. Schlessinger Science Library. [Videotape].

ERIC Educational Resources Information Center

2000

Kids know that when they are lost, they look at a map to find their way. It's no different in the world of science, as they'll learn in The Periodic Table--a fun and engaging look at the road map of the elements. Young students will learn about key information included on the table, including atomic number, atomic mass and chemical symbol. They'll…

Local Anesthetic Microcapsules.

DTIC Science & Technology

1981-04-15

III Chemical Structure of Local Anesthetics 12 Table IV Processing Summary of Lidocaine Microencapsulation 15 Table V Lidocaine Microcapsule Size...Distribution 17 Table VI Processing Summary of Etidocaine Microencapsulation 18 Table VII Etidocaine Microcapsule Size Distribution 19 Table VIII Lidocaine...REPORT I PERIOD COVERED Annual Local Anesthetic Microcapsules 1 July 1980-30 March 1981 6. PERFORMING ORG. REPORT NUMBER 2106-1 7. AUTHOR() S

Ecological periodic tables: In principle and practice - Janury 2012

EPA Science Inventory

The chemical periodic table, the Linnaean system of classification and the Hertzsprung-Russell diagram are iconic information organizing structures in chemistry, biology and astronomy, respectively, because they are simple, exceptionally useful and they foster the expansion of sc...

High-Level Ab Initio Calculations of Intermolecular Interactions: Heavy Main-Group Element π-Interactions.

PubMed

Krasowska, Małgorzata; Schneider, Wolfgang B; Mehring, Michael; Auer, Alexander A

2018-05-02

This work reports high-level ab initio calculations and a detailed analysis on the nature of intermolecular interactions of heavy main-group element compounds and π systems. For this purpose we have chosen a set of benchmark molecules of the form MR 3 , in which M=As, Sb, or Bi, and R=CH 3 , OCH 3 , or Cl. Several methods for the description of weak intermolecular interactions are benchmarked including DFT-D, DFT-SAPT, MP2, and high-level coupled cluster methods in the DLPNO-CCSD(T) approximation. Using local energy decomposition (LED) and an analysis of the electron density, details of the nature of this interaction are unraveled. The results yield insight into the nature of dispersion and donor-acceptor interactions in this type of system, including systematic trends in the periodic table, and also provide a benchmark for dispersion interactions in heavy main-group element compounds. © 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

12 CFR 226.9 - Subsequent disclosure requirements.

Code of Federal Regulations, 2013 CFR

2013-01-01

... the form of a table and provided on the front of any page of the periodic statement, above the notice... a table and provided on the front of any page of the periodic statement; or (B) If a notice required... each consumer entitled to receive a periodic statement under § 226.5(b)(2) for any one billing cycle...

12 CFR 226.9 - Subsequent disclosure requirements.

Code of Federal Regulations, 2014 CFR

2014-01-01

... the form of a table and provided on the front of any page of the periodic statement, above the notice... a table and provided on the front of any page of the periodic statement; or (B) If a notice required... each consumer entitled to receive a periodic statement under § 226.5(b)(2) for any one billing cycle...

12 CFR 226.9 - Subsequent disclosure requirements.

Code of Federal Regulations, 2011 CFR

2011-01-01

... the form of a table and provided on the front of any page of the periodic statement, above the notice... a table and provided on the front of any page of the periodic statement; or (B) If a notice required... consumer entitled to receive a periodic statement under § 226.5(b)(2) for any one billing cycle. (2...

An Overview of Starfish: A Table-Centric Tool for Interactive Synthesis

NASA Technical Reports Server (NTRS)

Tsow, Alex

2008-01-01

Engineering is an interactive process that requires intelligent interaction at many levels. My thesis [1] advances an engineering discipline for high-level synthesis and architectural decomposition that integrates perspicuous representation, designer interaction, and mathematical rigor. Starfish, the software prototype for the design method, implements a table-centric transformation system for reorganizing control-dominated system expressions into high-level architectures. Based on the digital design derivation (DDD) system a designer-guided synthesis technique that applies correctness preserving transformations to synchronous data flow specifications expressed as co- recursive stream equations Starfish enhances user interaction and extends the reachable design space by incorporating four innovations: behavior tables, serialization tables, data refinement, and operator retiming. Behavior tables express systems of co-recursive stream equations as a table of guarded signal updates. Developers and users of the DDD system used manually constructed behavior tables to help them decide which transformations to apply and how to specify them. These design exercises produced several formally constructed hardware implementations: the FM9001 microprocessor, an SECD machine for evaluating LISP, and the SchemEngine, garbage collected machine for interpreting a byte-code representation of compiled Scheme programs. Bose and Tuna, two of DDD s developers, have subsequently commercialized the design derivation methodology at Derivation Systems, Inc. (DSI). DSI has formally derived and validated PCI bus interfaces and a Java byte-code processor; they further executed a contract to prototype SPIDER-NASA's ultra-reliable communications bus. To date, most derivations from DDD and DRS have targeted hardware due to its synchronous design paradigm. However, Starfish expressions are independent of the synchronization mechanism; there is no commitment to hardware or globally broadcast clocks. Though software back-ends for design derivation are limited to the DDD stream-interpreter, targeting synchronous or real-time software is not substantively different from targeting hardware.

Elements in the history of the Periodic Table.

PubMed

Rouvray, Dennis H

2004-06-01

Discovery of the Periodic Table was rendered possible only after four decisive prerequisites had been achieved. These were (i) the abandonment of the metaphysical and occult notions of elements that typified the alchemical era; (ii) the adoption of a modern and workable definition of an element; (iii) the development of analytical chemical techniques for the isolation of the elements and determination of their properties; and (iv) the devising of a means of associating each element with a characteristic natural number. The Periodic Table made its appearance on cue almost as soon as these preconditions had been fulfilled.

Liquid electrolyte-free, solid-state solar cells with inorganic hole transport materials

DOE Office of Scientific and Technical Information (OSTI.GOV)

Kanatzidis, Mercouri G.; Chung, In; Lee, Byunghong

Photovoltaic cells incorporating the compounds A/M/X compounds as hole transport materials are provide. The A/M/X compounds comprise one or more A moieties, one or more M atoms and one or more X atoms. The A moieties are selected from organic cations and elements from Group 1 of the periodic table, the M atoms are selected from elements from at least one of Groups 3, 4, 5, 13, 14 or 15 of the periodic table, and the X atoms are selected from elements from Group 17 of the periodic table.

40 CFR Table 3 to Subpart Ooo - Fugitive Emission Limits

Code of Federal Regulations, 2011 CFR

2011-07-01

... 40 Protection of Environment 6 2011-07-01 2011-07-01 false Fugitive Emission Limits 3 Table 3 to... Processing Plants Subpt. OOO, Table 3 Table 3 to Subpart OOO—Fugitive Emission Limits Table 3 to Subpart OOO...; andPeriodic inspections of water sprays according to § 60.674(b) and § 60.676(b); and A repeat...

40 CFR Table 3 to Subpart Ooo - Fugitive Emission Limits

Code of Federal Regulations, 2010 CFR

2010-07-01

... 40 Protection of Environment 6 2010-07-01 2010-07-01 false Fugitive Emission Limits 3 Table 3 to... Processing Plants Subpt. OOO, Table 3 Table 3 to Subpart OOO—Fugitive Emission Limits Table 3 to Subpart OOO...; andPeriodic inspections of water sprays according to § 60.674(b) and § 60.676(b); and A repeat...

Host Plant-Herbivore-Predator Interactions in Chrysoperla carnea (Neuroptera: Chrysopidae) and Myzus persicae (Homoptera: Aphididae) on Four Plant Species Under Laboratory Conditions.

PubMed

Farrokhi, Milad; Gharekhani, Gholamhossein; Iranipour, Shahzad; Hassanpour, Mahdi

2017-12-05

The common green lacewing, Chrysoperla carnea (Stephens) (Neuroptera: Chrysopidae), is a well-known biocontrol agent. The current study examined host plant-herbivore-predator interactions with C. carnea and Myzus persicae on four host plants (peach, almond, pepper, and potato). The experiments were carried out at 25 ± 1°C and 65 ± 5% RH at a photoperiod of 16:8 (L:D) h). Duration of the preadult growth period, adult longevity, fecundity, and population growth parameters were analyzed based on the age-stage, two-sex life table theory. The shortest and longest preadult developmental times of the predator were observed on the peach and potato, respectively. The highest and lowest predation rate, oviposition period, and male and female longevity of predator were also observed on the peach and potato, respectively. The lowest intrinsic rate of increase (r) and finite rate of increase (λ) were observed on the potato (0.1087 and 1.11 d-1, respectively) and the highest on the peach (0.1460 and 1.15 d-1, respectively). The maximum and minimum mean generation times (T) were 41.84 and 35.59 d in the potato and peach, respectively. Overall, peach was found to be a more appropriate host than the other host plants for development and predation fitness of C. carnea. These findings reveal that information on tritrophic interactions and subsequent life table evaluation of natural enemies improves integrated pest management programs. Published by Oxford University Press on behalf of Entomological Society of America 2017. This work is written by (a) US Government employee(s) and is in the public domain in the US.

Selective intra-dinucleotide interactions and periodicities of bases separated by K sites: a new vision and tool for phylogeny analyses.

PubMed

Valenzuela, Carlos Y

2017-02-13

Direct tests of the random or non-random distribution of nucleotides on genomes have been devised to test the hypothesis of neutral, nearly-neutral or selective evolution. These tests are based on the direct base distribution and are independent of the functional (coding or non-coding) or structural (repeated or unique sequences) properties of the DNA. The first approach described the longitudinal distribution of bases in tandem repeats under the Bose-Einstein statistics. A huge deviation from randomness was found. A second approach was the study of the base distribution within dinucleotides whose bases were separated by 0, 1, 2… K nucleotides. Again an enormous difference from the random distribution was found with significances out of tables and programs. These test values were periodical and included the 16 dinucleotides. For example a high "positive" (more observed than expected dinucleotides) value, found in dinucleotides whose bases were separated by (3K + 2) sites, was preceded by two smaller "negative" (less observed than expected dinucleotides) values, whose bases were separated by (3K) or (3K + 1) sites. We examined mtDNAs, prokaryote genomes and some eukaryote chromosomes and found that the significant non-random interactions and periodicities were present up to 1000 or more sites of base separation and in human chromosome 21 until separations of more than 10 millions sites. Each nucleotide has its own significant value of its distance to neutrality; this yields 16 hierarchical significances. A three dimensional table with the number of sites of separation between the bases and the 16 significances (the third dimension is the dinucleotide, individual or taxon involved) gives directly an evolutionary state of the analyzed genome that can be used to obtain phylogenies. An example is provided.

The periodic table: icon and inspiration.

PubMed

Poliakoff, Martyn; Tang, Samantha

2015-03-13

To start this discussion meeting on the new chemistry of the elements held on 12 May 2014, Martyn Poliakoff, Foreign Secretary of the Royal Society, was invited to give the opening remarks. As a chemist and a presenter of the popular online video channel 'The periodic table of videos', Martyn communicates his personal and professional interest in the elements to the public, who in turn use these videos both as an educational resource and for entertainment purposes. Ever since Mendeleev's first ideas for the periodic table were published in 1869, the table has continued to grow as new elements have been discovered, and it serves as both icon and inspiration; its form is now so well established that it is recognized the world over as a symbol for science. This paper highlights but a few of the varied forms that the table can take, such as an infographic, which can convey the shortage of certain elements with great impact. © 2015 The Author(s) Published by the Royal Society. All rights reserved.

A Modern Periodic Table.

ERIC Educational Resources Information Center

Herrenden-Harker, B. D.

1997-01-01

Presents a modern Periodic Table based on the electron distribution in the outermost shell and the order of filling of the sublevels within the shells. Enables a student to read off directly the electronic configuration of the element and the order in which filling occurs. (JRH)

Ecological periodic tables for nekton and benthic macrofaunal community usage of estuarine habitats

EPA Science Inventory

Background/Questions/Methods The chemical periodic table, the Linnaean system of classification, and the Hertzsprung-Russell diagram are iconic information organizing systems because they are simple, easy to understand, exceptionally useful, and they foster the expansion of sc...

Ecological periodic tables for estuarine habitats

EPA Science Inventory

Southwood (1977; J Anim Ecol 46: 337-365) compared the situation in ecology to that in chemistry before the development of the periodic table when each fact, for example, the solubility or reactivity of a chemical element, had to be discovered independently and remembered in isol...

Multiple valence superatoms.

PubMed

Reveles, J U; Khanna, S N; Roach, P J; Castleman, A W

2006-12-05

We recently demonstrated that, in gas phase clusters containing aluminum and iodine atoms, an Al(13) cluster behaves like a halogen atom, whereas an Al(14) cluster exhibits properties analogous to an alkaline earth atom. These observations, together with our findings that Al(13)(-) is inert like a rare gas atom, have reinforced the idea that chosen clusters can exhibit chemical behaviors reminiscent of atoms in the periodic table, offering the exciting prospect of a new dimension of the periodic table formed by cluster elements, called superatoms. As the behavior of clusters can be controlled by size and composition, the superatoms offer the potential to create unique compounds with tailored properties. In this article, we provide evidence of an additional class of superatoms, namely Al(7)(-), that exhibit multiple valences, like some of the elements in the periodic table, and hence have the potential to form stable compounds when combined with other atoms. These findings support the contention that there should be no limitation in finding clusters, which mimic virtually all members of the periodic table.

30 CFR 250.1200 - Question index table.

Code of Federal Regulations, 2011 CFR

2011-07-01

... 30 Mineral Resources 2 2011-07-01 2011-07-01 false Question index table. 250.1200 Section 250.1200... Measurement, Surface Commingling, and Security § 250.1200 Question index table. The table in this section...? § 250.1204(a) 20. What are the requirements for a periodic well test used for allocation? § 250.1204(b...

30 CFR 250.1200 - Question index table.

Code of Federal Regulations, 2012 CFR

2012-07-01

... 30 Mineral Resources 2 2012-07-01 2012-07-01 false Question index table. 250.1200 Section 250.1200..., Surface Commingling, and Security § 250.1200 Question index table. The table in this section lists...(a) 20. What are the requirements for a periodic well test used for allocation? § 250.1204(b) 21...

30 CFR 250.1200 - Question index table.

Code of Federal Regulations, 2014 CFR

2014-07-01

... 30 Mineral Resources 2 2014-07-01 2014-07-01 false Question index table. 250.1200 Section 250.1200..., Surface Commingling, and Security § 250.1200 Question index table. The table in this section lists...(a) 20. What are the requirements for a periodic well test used for allocation? § 250.1204(b) 21...

30 CFR 250.1200 - Question index table.

Code of Federal Regulations, 2013 CFR

2013-07-01

... 30 Mineral Resources 2 2013-07-01 2013-07-01 false Question index table. 250.1200 Section 250.1200..., Surface Commingling, and Security § 250.1200 Question index table. The table in this section lists...(a) 20. What are the requirements for a periodic well test used for allocation? § 250.1204(b) 21...

Ecological periodic tables for benthic macrofaunal usage of estuarine habitats

EPA Science Inventory

Southwood (1977: Journal of Animal Ecology 46: 337-365), in his presidential address to the British Ecological Society, compared the situation in ecology to that in chemistry before the development of the chemical periodic table when each fact, for example, the solubility or reac...

Fully Exploiting The Potential Of The Periodic Table Through Pattern Recognition.

ERIC Educational Resources Information Center

Schultz, Emeric

2005-01-01

An approach to learning chemical facts that starts with the periodic table and depends primarily on recognizing and completing patterns and following a few simple rules is described. This approach exploits the exceptions that arise and uses them as opportunities for further concept development.

VizieR Online Data Catalog: Mira Variables in the OGLE Bulge fields (Groenewegen+, 2005)

NASA Astrophysics Data System (ADS)

Groenewegen, M. A. T.; Blommaert, J. A. D. L.

2005-07-01

Table 1 provides the results of the period analysis (up to 3 periods with error and amplitudes with error), and associated 2MASS and DENIS photometry. Table 2 provides the cross-correlation with other objects and special remarks. (4 data files).

77 FR 8751 - Table Saw Blade Contact Injuries; Reopening of the Comment Period

Federal Register 2010, 2011, 2012, 2013, 2014

2012-02-15

... Contact Injuries; Reopening of the Comment Period AGENCY: U.S. Consumer Product Safety Commission. ACTION... of injury associated with table saw blade contact, regulatory alternatives, other possible [[Page.... All comments received may be posted without change, including any personal identifiers, contact...

Plasma Interactions With Spacecraft

DTIC Science & Technology

2009-04-01

software core 3 Table 2. N2kDB classes 8 Table 3. N2kDB Application Programmer Interface 11 Table 4. How to get number of items from N2kDB 14 Table 5...grid, timesteps, and pages of particles. Table 4 specifies how these functions are used to get useful quantities. The Getcount function gets the...number of items with data item names that start with the specified string. 13 Table 4. How to get number of items from N2kDB. Function Specifics

Summary of Round Table Session and Appendixes

Treesearch

1992-01-01

The round table session was designed for interaction between the presenters and other round table participants. Twelve round tables, each capable of holding 10 participants were set up in one room. Presenters for the sessions were encouraged to lead discussions on one of many topics in these areas: a research idea that the presenter was just formulating; an unpublished...

Creating New Mathematical Applications Utilizing SMART Table

ERIC Educational Resources Information Center

Seals, Cheryl D.; Swanier, Cheryl S.; Nyagwencha, Justus Nyamweya; Cagle, Ashley L.; Houser, Navorro

2011-01-01

SMART Technologies is leading the way for interactive learning, through their many different tools. The SMART Table is a multi-user, multi-touch interactive interface that not only teaches children different concepts in fun ways (Steurer P., 2003), but it also inspires cooperative competition. In Alabama, the state curriculum for kindergarten…

Solving the Self-Interaction Problem in Kohn-Sham Density Functional Theory. Application to Atoms

DOE PAGES

Daene, M.; Gonis, A.; Nicholson, D. M.; ...

2014-10-14

Previously, we proposed a computational methodology that addresses the elimination of the self-interaction error from the Kohn–Sham formulation of the density functional theory. We demonstrated how the exchange potential can be obtained, and presented results of calculations for atomic systems up to Kr carried out within a Cartesian coordinate system. In our paper, we provide complete details of this self-interaction free method formulated in spherical coordinates based on the explicit equidensity basis ansatz. We also prove analytically that derivatives obtained using this method satisfy the Virial theorem for spherical orbitals, where the problem can be reduced to one dimension. Wemore » present the results of calculations of ground-state energies of atomic systems throughout the periodic table carried out within the exchange-only mode.« less

12 CFR 226.18 - Content of disclosures.

Code of Federal Regulations, 2014 CFR

2014-01-01

... separately from other periodic payments disclosed in the table under this paragraph (s), outside the table... form of a table, with no more than five columns, with headings and format substantially similar to Model Clause H-4(E), H-4(F), H-4(G), or H-4(H) in Appendix H to this part. The table shall contain only...

30 CFR 250.1200 - Question index table.

Code of Federal Regulations, 2010 CFR

2010-07-01

... 30 Mineral Resources 2 2010-07-01 2010-07-01 false Question index table. 250.1200 Section 250.1200... Security § 250.1200 Question index table. The table in this section lists questions concerning Oil and Gas... requirements for a periodic well test used for allocation? § 250.1204(b) 21. What are the requirements for site...

12 CFR 226.18 - Content of disclosures.

Code of Federal Regulations, 2013 CFR

2013-01-01

... separately from other periodic payments disclosed in the table under this paragraph (s), outside the table... form of a table, with no more than five columns, with headings and format substantially similar to Model Clause H-4(E), H-4(F), H-4(G), or H-4(H) in Appendix H to this part. The table shall contain only...

26 CFR 1.441-0 - Table of contents.

Code of Federal Regulations, 2010 CFR

2010-04-01

...) Computation of taxable income. (1) In general. (2) Length of taxable year. (b) General rules and definitions... accounting period. (4) Calendar year. (5) Fiscal year. (i) Definition. (ii) Recognition. (6) Grandfathered...) INCOME TAXES Accounting Periods § 1.441-0 Table of contents. This section lists the captions contained in...

Ecological periodic tables for US Pacific Northwest estuarine habitats

EPA Science Inventory

In his presidential address to the British Ecological Society, T.R.E. Southwood (1977; J Anim Ecol (1977), 46: 337-365) compared the situation in ecology to that in chemistry before the development of the periodic table when each fact, for example, the solubility or reactivity of...

Interactions of Water Vapor with Oxides at Elevated Temperatures

NASA Technical Reports Server (NTRS)

Jacobson, Nathan; Opila, Elizabeth; Copland, Evan; Myers, Dwight

2003-01-01

Many volatile metal hydroxides form by reaction of the corresponding metal oxide with water vapor. These reactions are important in a number of high temperature corrosion processes. Experimental methods for studying the thermodynamics of metal hydroxides include: gas leak Knudsen cell mass spectrometry, free jet sampling mass spectrometry, transpiration and hydrogen-oxygen flame studies. The available experimental information is reviewed and the most stable metal hydroxide species are correlated with position in the periodic table. Current studies in our laboratory on the Si-O-H system are discussed.

40 CFR Table 3 to Subpart Ooo of... - Fugitive Emission Limits

Code of Federal Regulations, 2014 CFR

2014-07-01

... 40 Protection of Environment 7 2014-07-01 2014-07-01 false Fugitive Emission Limits 3 Table 3 to... Mineral Processing Plants Pt. 60, Subpt. OOO, Table 3 Table 3 to Subpart OOO of Part 60—Fugitive Emission...; andPeriodic inspections of water sprays according to § 60.674(b) and § 60.676(b); and A repeat...

40 CFR Table 3 to Subpart Ooo of... - Fugitive Emission Limits

Code of Federal Regulations, 2012 CFR

2012-07-01

... 40 Protection of Environment 7 2012-07-01 2012-07-01 false Fugitive Emission Limits 3 Table 3 to... Mineral Processing Plants Subpt. OOO, Table 3 Table 3 to Subpart OOO of Part 60—Fugitive Emission Limits... performance test according to § 60.11 of this part and § 60.675 of this subpart; andPeriodic inspections of...

40 CFR Table 8 to Subpart U of... - Summary of Compliance Alternative Requirements for the Back-End Process Provisions

Code of Federal Regulations, 2011 CFR

2011-07-01

... Requirements for the Back-End Process Provisions 8 Table 8 to Subpart U of Part 63 Protection of Environment...: Group I Polymers and Resins Pt. 63, Subpt. U, Table 8 Table 8 to Subpart U of Part 63—Summary of... be monitored Requirements Compliance Using Stripping Technology, Demonstrated through Periodic...

40 CFR Table 8 to Subpart U of... - Summary of Compliance Alternative Requirements for the Back-End Process Provisions

Code of Federal Regulations, 2010 CFR

2010-07-01

... Requirements for the Back-End Process Provisions 8 Table 8 to Subpart U of Part 63 Protection of Environment...: Group I Polymers and Resins Pt. 63, Subpt. U, Table 8 Table 8 to Subpart U of Part 63—Summary of... be monitored Requirements Compliance Using Stripping Technology, Demonstrated through Periodic...

40 CFR Table 3 to Subpart Ooo of... - Fugitive Emission Limits

Code of Federal Regulations, 2013 CFR

2013-07-01

... 40 Protection of Environment 7 2013-07-01 2013-07-01 false Fugitive Emission Limits 3 Table 3 to... Mineral Processing Plants Pt. 60, Subpt. OOO, Table 3 Table 3 to Subpart OOO of Part 60—Fugitive Emission...; andPeriodic inspections of water sprays according to § 60.674(b) and § 60.676(b); and A repeat...

40 CFR Table 8 to Subpart U of... - Summary of Compliance Alternative Requirements for the Back-End Process Provisions

Code of Federal Regulations, 2014 CFR

2014-07-01

... Requirements for the Back-End Process Provisions 8 Table 8 to Subpart U of Part 63 Protection of Environment...: Group I Polymers and Resins Pt. 63, Subpt. U, Table 8 Table 8 to Subpart U of Part 63—Summary of... be monitored Requirements Compliance Using Stripping Technology, Demonstrated through Periodic...

40 CFR Table 8 to Subpart U of... - Summary of Compliance Alternative Requirements for the Back-End Process Provisions

Code of Federal Regulations, 2012 CFR

2012-07-01

... Requirements for the Back-End Process Provisions 8 Table 8 to Subpart U of Part 63 Protection of Environment...: Group I Polymers and Resins Pt. 63, Subpt. U, Table 8 Table 8 to Subpart U of Part 63—Summary of... be monitored Requirements Compliance Using Stripping Technology, Demonstrated through Periodic...

40 CFR Table 8 to Subpart U of... - Summary of Compliance Alternative Requirements for the Back-End Process Provisions

Code of Federal Regulations, 2013 CFR

2013-07-01

... Requirements for the Back-End Process Provisions 8 Table 8 to Subpart U of Part 63 Protection of Environment...: Group I Polymers and Resins Pt. 63, Subpt. U, Table 8 Table 8 to Subpart U of Part 63—Summary of... be monitored Requirements Compliance Using Stripping Technology, Demonstrated through Periodic...

The Analysis of Three-Way Contingency Tables by Three-Mode Association Models.

ERIC Educational Resources Information Center

Anderson, Carolyn J.

1996-01-01

Generalizations of L. A. Goodman's RC(M) association model (1991 and earlier) are presented for three-way tables. These three-mode association models use L. R. Tucker's three-mode components model (1964, 1966) to represent the three-factor interaction or the combined effects of two- and three-factor interactions. (SLD)

Interactive Data Exploration with Smart Drill-Down

PubMed Central

Joglekar, Manas; Garcia-Molina, Hector; Parameswaran, Aditya

2017-01-01

We present smart drill-down, an operator for interactively exploring a relational table to discover and summarize “interesting” groups of tuples. Each group of tuples is described by a rule. For instance, the rule (a, b, ⋆, 1000) tells us that there are a thousand tuples with value a in the first column and b in the second column (and any value in the third column). Smart drill-down presents an analyst with a list of rules that together describe interesting aspects of the table. The analyst can tailor the definition of interesting, and can interactively apply smart drill-down on an existing rule to explore that part of the table. We demonstrate that the underlying optimization problems are NP-Hard, and describe an algorithm for finding the approximately optimal list of rules to display when the user uses a smart drill-down, and a dynamic sampling scheme for efficiently interacting with large tables. Finally, we perform experiments on real datasets on our experimental prototype to demonstrate the usefulness of smart drill-down and study the performance of our algorithms. PMID:28210096

Sugarcane Responses to Water-Table Depth and Periodic Flood

USDA-ARS?s Scientific Manuscript database

Sugarcane (Saccharum spp.) is routinely exposed to periodic floods and shallow water tables in Florida’s Everglades Agricultural Area (EAA). The purpose of this study was to examine the yields and juice quality of four sugarcane cultivars (CP 88-1762, CP 89-2143, CP 89-2376, and CP 96-1252) maintain...

Changing Ideas about the Periodic Table of Elements and Students' Alternative Concepts of Isotopes and Allotropes.

ERIC Educational Resources Information Center

Schmidt, Hans-Jurgen; Baumgartner, Tim; Eybe, Holger

2003-01-01

Investigates secondary school students' concepts of isotopes and allotropes and how the concepts are linked to the Periodic Table of Elements (PTE). Questions senior high school students with multiple choice items and interviews. Shows that students actively tried to make sense of what they had experienced. (KHR)

Primo Levi and the Periodic Table: Teaching Chemistry Using A Literary Text (Excerpt)

ERIC Educational Resources Information Center

Osorio, Viktoria Klara Lakatos; Tiedemann, Peter Wilhelm; Porto, Paulo Alves

2007-01-01

The excerpts from The Periodic Table book written by Primo Levi is discussed related to chemical concepts. The use of a literary text as a starting point of discussions of chemical concepts has allowed the integration of various topics covered in separate courses of the undergraduate program in chemistry.

It's Elemental!

ERIC Educational Resources Information Center

Diener, Lynn; Moore, John W.

2011-01-01

An understanding of the periodic table is central to the study of chemistry. So it is no surprise that it is included in the National Science Education Standards. But how can teachers get students excited about the periodic table? And how can teachers help them learn it in a way that challenges their critical-thinking skills? The authors'…

Ecological periodic tables for benthic macrofaunal usage of estuarine habitats : Insights from a case study in Tillamook bay, Oregon, USA

EPA Science Inventory

This study validates the ecological relevance of estuarine habitat types to the benthic macrofaunal community and, together with previous similar studies, suggests they can serve as elements in ecological periodic tables of benthic macrofaunal usage in the bioregion. We compared...

Technetium: The First Radioelement on the Periodic Table

ERIC Educational Resources Information Center

Johnstone, Erik V.; Yates, Mary Anne; Poineau, Frederic; Sattelberger, Alfred P.; Czerwinski, Kenneth R.

2017-01-01

The radioactive nature of technetium is discussed using a combination of introductory nuclear physics concepts and empirical trends observed in the chart of the nuclides and the periodic table of the elements. Trends such as the enhanced stability of nucleon pairs, magic numbers, and Mattauch's rule are described. The concepts of nuclear binding…

CH-TRU Waste Content Codes (CH-TRUCON)

DOE Office of Scientific and Technical Information (OSTI.GOV)

Washington TRU Solutions LLC

2007-08-15

The CH-TRU Waste Content Codes (CH-TRUCON) document describes the inventory of the U.S. Department of Energy (DOE) CH-TRU waste within the transportation parameters specified by the Contact-Handled Transuranic Waste Authorized Methods for Payload Control (CH-TRAMPAC). The CH-TRAMPAC defines the allowable payload for the Transuranic Package Transporter-II (TRUPACT-II) and HalfPACT packagings. This document is a catalog of TRUPACT-II and HalfPACT authorized contents and a description of the methods utilized to demonstrate compliance with the CH-TRAMPAC. A summary of currently approved content codes by site is presented in Table 1. The CH-TRAMPAC describes "shipping categories" that are assigned to each payload container.more » Multiple shipping categories may be assigned to a single content code. A summary of approved content codes and corresponding shipping categories is provided in Table 2, which consists of Tables 2A, 2B, and 2C. Table 2A provides a summary of approved content codes and corresponding shipping categories for the "General Case," which reflects the assumption of a 60-day shipping period as described in the CH-TRAMPAC and Appendix 3.4 of the CH-TRU Payload Appendices. For shipments to be completed within an approximately 1,000-mile radius, a shorter shipping period of 20 days is applicable as described in the CH-TRAMPAC and Appendix 3.5 of the CH-TRU Payload Appendices. For shipments to WIPP from Los Alamos National Laboratory (LANL), Nevada Test Site, and Rocky Flats Environmental Technology Site, a 20-day shipping period is applicable. Table 2B provides a summary of approved content codes and corresponding shipping categories for "Close-Proximity Shipments" (20-day shipping period). For shipments implementing the controls specified in the CH-TRAMPAC and Appendix 3.6 of the CH-TRU Payload Appendices, a 10-day shipping period is applicable. Table 2C provides a summary of approved content codes and corresponding shipping categories for "Controlled Shipments" (10-day shipping period).« less

CH-TRU Waste Content Codes (CH-TRUCON)

DOE Office of Scientific and Technical Information (OSTI.GOV)

Washington TRU Solutions LLC

2007-06-15

The CH-TRU Waste Content Codes (CH-TRUCON) document describes the inventory of the U.S. Department of Energy (DOE) CH-TRU waste within the transportation parameters specified by the Contact-Handled Transuranic Waste Authorized Methods for Payload Control (CH-TRAMPAC). The CH-TRAMPAC defines the allowable payload for the Transuranic Package Transporter-II (TRUPACT-II) and HalfPACT packagings. This document is a catalog of TRUPACT-II and HalfPACT authorized contents and a description of the methods utilized to demonstrate compliance with the CH-TRAMPAC. A summary of currently approved content codes by site is presented in Table 1. The CH-TRAMPAC describes "shipping categories" that are assigned to each payload container.more » Multiple shipping categories may be assigned to a single content code. A summary of approved content codes and corresponding shipping categories is provided in Table 2, which consists of Tables 2A, 2B, and 2C. Table 2A provides a summary of approved content codes and corresponding shipping categories for the "General Case," which reflects the assumption of a 60-day shipping period as described in the CH-TRAMPAC and Appendix 3.4 of the CH-TRU Payload Appendices. For shipments to be completed within an approximately 1,000-mile radius, a shorter shipping period of 20 days is applicable as described in the CH-TRAMPAC and Appendix 3.5 of the CH-TRU Payload Appendices. For shipments to WIPP from Los Alamos National Laboratory (LANL), Nevada Test Site, and Rocky Flats Environmental Technology Site, a 20-day shipping period is applicable. Table 2B provides a summary of approved content codes and corresponding shipping categories for "Close-Proximity Shipments" (20-day shipping period). For shipments implementing the controls specified in the CH-TRAMPAC and Appendix 3.6 of the CH-TRU Payload Appendices, a 10-day shipping period is applicable. Table 2C provides a summary of approved content codes and corresponding shipping categories for "Controlled Shipments" (10-day shipping period).« less

CH-TRU Waste Content Codes (CH-TRUCON)

DOE Office of Scientific and Technical Information (OSTI.GOV)

Washington TRU Solutions LLC

2007-09-20

The CH-TRU Waste Content Codes (CH-TRUCON) document describes the inventory of the U.S. Department of Energy (DOE) CH-TRU waste within the transportation parameters specified by the Contact-Handled Transuranic Waste Authorized Methods for Payload Control (CH-TRAMPAC). The CH-TRAMPAC defines the allowable payload for the Transuranic Package Transporter-II (TRUPACT-II) and HalfPACT packagings. This document is a catalog of TRUPACT-II and HalfPACT authorized contents and a description of the methods utilized to demonstrate compliance with the CH-TRAMPAC. A summary of currently approved content codes by site is presented in Table 1. The CH-TRAMPAC describes "shipping categories" that are assigned to each payload container.more » Multiple shipping categories may be assigned to a single content code. A summary of approved content codes and corresponding shipping categories is provided in Table 2, which consists of Tables 2A, 2B, and 2C. Table 2A provides a summary of approved content codes and corresponding shipping categories for the "General Case," which reflects the assumption of a 60-day shipping period as described in the CH-TRAMPAC and Appendix 3.4 of the CH-TRU Payload Appendices. For shipments to be completed within an approximately 1,000-mile radius, a shorter shipping period of 20 days is applicable as described in the CH-TRAMPAC and Appendix 3.5 of the CH-TRU Payload Appendices. For shipments to WIPP from Los Alamos National Laboratory (LANL), Nevada Test Site, and Rocky Flats Environmental Technology Site, a 20-day shipping period is applicable. Table 2B provides a summary of approved content codes and corresponding shipping categories for "Close-Proximity Shipments" (20-day shipping period). For shipments implementing the controls specified in the CH-TRAMPAC and Appendix 3.6 of the CH-TRU Payload Appendices, a 10-day shipping period is applicable. Table 2C provides a summary of approved content codes and corresponding shipping categories for "Controlled Shipments" (10-day shipping period).« less

CH-TRU Waste Content Codes (CH-TRUCON)

DOE Office of Scientific and Technical Information (OSTI.GOV)

Washington TRU Solutions LLC

2006-06-20

The CH-TRU Waste Content Codes (CH-TRUCON) document describes the inventory of the U.S. Department of Energy (DOE) CH-TRU waste within the transportation parameters specified by the Contact-Handled Transuranic Waste Authorized Methods for Payload Control (CH-TRAMPAC). The CH-TRAMPAC defines the allowable payload for the Transuranic Package Transporter-II (TRUPACT-II) and HalfPACT packagings. This document is a catalog of TRUPACT-II and HalfPACT authorized contents and a description of the methods utilized to demonstrate compliance with the CH-TRAMPAC. A summary of currently approved content codes by site is presented in Table 1. The CH-TRAMPAC describes "shipping categories" that are assigned to each payload container.more » Multiple shipping categories may be assigned to a single content code. A summary of approved content codes and corresponding shipping categories is provided in Table 2, which consists of Tables 2A, 2B, and 2C. Table 2A provides a summary of approved content codes and corresponding shipping categories for the "General Case," which reflects the assumption of a 60-day shipping period as described in the CH-TRAMPAC and Appendix 3.4 of the CH-TRU Payload Appendices. For shipments to be completed within an approximately 1,000-mile radius, a shorter shipping period of 20 days is applicable as described in the CH-TRAMPAC and Appendix 3.5 of the CH-TRU Payload Appendices. For shipments to WIPP from Los Alamos National Laboratory (LANL), Nevada Test Site, and Rocky Flats Environmental Technology Site, a 20-day shipping period is applicable. Table 2B provides a summary of approved content codes and corresponding shipping categories for "Close-Proximity Shipments" (20-day shipping period). For shipments implementing the controls specified in the CH-TRAMPAC and Appendix 3.6 of the CH-TRU Payload Appendices, a 10-day shipping period is applicable. Table 2C provides a summary of approved content codes and corresponding shipping categories for "Controlled Shipments" (10-day shipping period).« less

CH-TRU Waste Content Codes (CH-TRUCON)

DOE Office of Scientific and Technical Information (OSTI.GOV)

Washington TRU Solutions LLC

2006-01-18

The CH-TRU Waste Content Codes (CH-TRUCON) document describes the inventory of the U.S. Department of Energy (DOE) CH-TRU waste within the transportation parameters specified by the Contact-Handled Transuranic Waste Authorized Methods for Payload Control (CH-TRAMPAC). The CH-TRAMPAC defines the allowable payload for the Transuranic Package Transporter-II (TRUPACT-II) and HalfPACT packagings. This document is a catalog of TRUPACT-II and HalfPACT authorized contents and a description of the methods utilized to demonstrate compliance with the CH-TRAMPAC. A summary of currently approved content codes by site is presented in Table 1. The CH-TRAMPAC describes "shipping categories" that are assigned to each payload container.more » Multiple shipping categories may be assigned to a single content code. A summary of approved content codes and corresponding shipping categories is provided in Table 2, which consists of Tables 2A, 2B, and 2C. Table 2A provides a summary of approved content codes and corresponding shipping categories for the "General Case," which reflects the assumption of a 60-day shipping period as described in the CH-TRAMPAC and Appendix 3.4 of the CH-TRU Payload Appendices. For shipments to be completed within an approximately 1,000-mile radius, a shorter shipping period of 20 days is applicable as described in the CH-TRAMPAC and Appendix 3.5 of the CH-TRU Payload Appendices. For shipments to WIPP from Los Alamos National Laboratory (LANL), Nevada Test Site, and Rocky Flats Environmental Technology Site, a 20-day shipping period is applicable. Table 2B provides a summary of approved content codes and corresponding shipping categories for "Close-Proximity Shipments" (20-day shipping period). For shipments implementing the controls specified in the CH-TRAMPAC and Appendix 3.6 of the CH-TRU Payload Appendices, a 10-day shipping period is applicable. Table 2C provides a summary of approved content codes and corresponding shipping categories for "Controlled Shipments" (10-day shipping period).« less

CH-TRU Waste Content Codes (CH-TRUCON)

DOE Office of Scientific and Technical Information (OSTI.GOV)

Washington TRU Solutions LLC

2006-08-15

The CH-TRU Waste Content Codes (CH-TRUCON) document describes the inventory of the U.S. Department of Energy (DOE) CH-TRU waste within the transportation parameters specified by the Contact-Handled Transuranic Waste Authorized Methods for Payload Control (CH-TRAMPAC). The CH-TRAMPAC defines the allowable payload for the Transuranic Package Transporter-II (TRUPACT-II) and HalfPACT packagings. This document is a catalog of TRUPACT-II and HalfPACT authorized contents and a description of the methods utilized to demonstrate compliance with the CH-TRAMPAC. A summary of currently approved content codes by site is presented in Table 1. The CH-TRAMPAC describes "shipping categories" that are assigned to each payload container.more » Multiple shipping categories may be assigned to a single content code. A summary of approved content codes and corresponding shipping categories is provided in Table 2, which consists of Tables 2A, 2B, and 2C. Table 2A provides a summary of approved content codes and corresponding shipping categories for the "General Case," which reflects the assumption of a 60-day shipping period as described in the CH-TRAMPAC and Appendix 3.4 of the CH-TRU Payload Appendices. For shipments to be completed within an approximately 1,000-mile radius, a shorter shipping period of 20 days is applicable as described in the CH-TRAMPAC and Appendix 3.5 of the CH-TRU Payload Appendices. For shipments to WIPP from Los Alamos National Laboratory (LANL), Nevada Test Site, and Rocky Flats Environmental Technology Site, a 20-day shipping period is applicable. Table 2B provides a summary of approved content codes and corresponding shipping categories for "Close-Proximity Shipments" (20-day shipping period). For shipments implementing the controls specified in the CH-TRAMPAC and Appendix 3.6 of the CH-TRU Payload Appendices, a 10-day shipping period is applicable. Table 2C provides a summary of approved content codes and corresponding shipping categories for "Controlled Shipments" (10-day shipping period).« less

CH-TRU Waste Content Codes (CH-TRUCON)

DOE Office of Scientific and Technical Information (OSTI.GOV)

Washington TRU Solutions LLC

2006-12-20

The CH-TRU Waste Content Codes (CH-TRUCON) document describes the inventory of the U.S. Department of Energy (DOE) CH-TRU waste within the transportation parameters specified by the Contact-Handled Transuranic Waste Authorized Methods for Payload Control (CH-TRAMPAC). The CH-TRAMPAC defines the allowable payload for the Transuranic Package Transporter-II (TRUPACT-II) and HalfPACT packagings. This document is a catalog of TRUPACT-II and HalfPACT authorized contents and a description of the methods utilized to demonstrate compliance with the CH-TRAMPAC. A summary of currently approved content codes by site is presented in Table 1. The CH-TRAMPAC describes "shipping categories" that are assigned to each payload container.more » Multiple shipping categories may be assigned to a single content code. A summary of approved content codes and corresponding shipping categories is provided in Table 2, which consists of Tables 2A, 2B, and 2C. Table 2A provides a summary of approved content codes and corresponding shipping categories for the "General Case," which reflects the assumption of a 60-day shipping period as described in the CH-TRAMPAC and Appendix 3.4 of the CH-TRU Payload Appendices. For shipments to be completed within an approximately 1,000-mile radius, a shorter shipping period of 20 days is applicable as described in the CH-TRAMPAC and Appendix 3.5 of the CH-TRU Payload Appendices. For shipments to WIPP from Los Alamos National Laboratory (LANL), Nevada Test Site, and Rocky Flats Environmental Technology Site, a 20-day shipping period is applicable. Table 2B provides a summary of approved content codes and corresponding shipping categories for "Close-Proximity Shipments" (20-day shipping period). For shipments implementing the controls specified in the CH-TRAMPAC and Appendix 3.6 of the CH-TRU Payload Appendices, a 10-day shipping period is applicable. Table 2C provides a summary of approved content codes and corresponding shipping categories for "Controlled Shipments" (10-day shipping period).« less

CH-TRU Waste Content Codes (CH-TRUCON)

DOE Office of Scientific and Technical Information (OSTI.GOV)

Washington TRU Solutions LLC

2007-02-15

The CH-TRU Waste Content Codes (CH-TRUCON) document describes the inventory of the U.S. Department of Energy (DOE) CH-TRU waste within the transportation parameters specified by the Contact-Handled Transuranic Waste Authorized Methods for Payload Control (CH-TRAMPAC). The CH-TRAMPAC defines the allowable payload for the Transuranic Package Transporter-II (TRUPACT-II) and HalfPACT packagings. This document is a catalog of TRUPACT-II and HalfPACT authorized contents and a description of the methods utilized to demonstrate compliance with the CH-TRAMPAC. A summary of currently approved content codes by site is presented in Table 1. The CH-TRAMPAC describes "shipping categories" that are assigned to each payload container.more » Multiple shipping categories may be assigned to a single content code. A summary of approved content codes and corresponding shipping categories is provided in Table 2, which consists of Tables 2A, 2B, and 2C. Table 2A provides a summary of approved content codes and corresponding shipping categories for the "General Case," which reflects the assumption of a 60-day shipping period as described in the CH-TRAMPAC and Appendix 3.4 of the CH-TRU Payload Appendices. For shipments to be completed within an approximately 1,000-mile radius, a shorter shipping period of 20 days is applicable as described in the CH-TRAMPAC and Appendix 3.5 of the CH-TRU Payload Appendices. For shipments to WIPP from Los Alamos National Laboratory (LANL), Nevada Test Site, and Rocky Flats Environmental Technology Site, a 20-day shipping period is applicable. Table 2B provides a summary of approved content codes and corresponding shipping categories for "Close-Proximity Shipments" (20-day shipping period). For shipments implementing the controls specified in the CH-TRAMPAC and Appendix 3.6 of the CH-TRU Payload Appendices, a 10-day shipping period is applicable. Table 2C provides a summary of approved content codes and corresponding shipping categories for "Controlled Shipments" (10-day shipping period).« less

CH-TRU Waste Content Codes (CH-TRUCON)

DOE Office of Scientific and Technical Information (OSTI.GOV)

Washington TRU Solutions LLC

2006-09-15

The CH-TRU Waste Content Codes (CH-TRUCON) document describes the inventory of the U.S. Department of Energy (DOE) CH-TRU waste within the transportation parameters specified by the Contact-Handled Transuranic Waste Authorized Methods for Payload Control (CH-TRAMPAC). The CH-TRAMPAC defines the allowable payload for the Transuranic Package Transporter-II (TRUPACT-II) and HalfPACT packagings. This document is a catalog of TRUPACT-II and HalfPACT authorized contents and a description of the methods utilized to demonstrate compliance with the CH-TRAMPAC. A summary of currently approved content codes by site is presented in Table 1. The CH-TRAMPAC describes "shipping categories" that are assigned to each payload container.more » Multiple shipping categories may be assigned to a single content code. A summary of approved content codes and corresponding shipping categories is provided in Table 2, which consists of Tables 2A, 2B, and 2C. Table 2A provides a summary of approved content codes and corresponding shipping categories for the "General Case," which reflects the assumption of a 60-day shipping period as described in the CH-TRAMPAC and Appendix 3.4 of the CH-TRU Payload Appendices. For shipments to be completed within an approximately 1,000-mile radius, a shorter shipping period of 20 days is applicable as described in the CH-TRAMPAC and Appendix 3.5 of the CH-TRU Payload Appendices. For shipments to WIPP from Los Alamos National Laboratory (LANL), Nevada Test Site, and Rocky Flats Environmental Technology Site, a 20-day shipping period is applicable. Table 2B provides a summary of approved content codes and corresponding shipping categories for "Close-Proximity Shipments" (20-day shipping period). For shipments implementing the controls specified in the CH-TRAMPAC and Appendix 3.6 of the CH-TRU Payload Appendices, a 10-day shipping period is applicable. Table 2C provides a summary of approved content codes and corresponding shipping categories for "Controlled Shipments" (10-day shipping period).« less

CH-TRU Waste Content Codes

DOE Office of Scientific and Technical Information (OSTI.GOV)

Washington TRU Solutions LLC

2008-01-16

The CH-TRU Waste Content Codes (CH-TRUCON) document describes the inventory of the U.S. Department of Energy (DOE) CH-TRU waste within the transportation parameters specified by the Contact-Handled Transuranic Waste Authorized Methods for Payload Control (CH-TRAMPAC). The CH-TRAMPAC defines the allowable payload for the Transuranic Package Transporter-II (TRUPACT-II) and HalfPACT packagings. This document is a catalog of TRUPACT-II and HalfPACT authorized contents and a description of the methods utilized to demonstrate compliance with the CH-TRAMPAC. A summary of currently approved content codes by site is presented in Table 1. The CH-TRAMPAC describes "shipping categories" that are assigned to each payload container.more » Multiple shipping categories may be assigned to a single content code. A summary of approved content codes and corresponding shipping categories is provided in Table 2, which consists of Tables 2A, 2B, and 2C. Table 2A provides a summary of approved content codes and corresponding shipping categories for the "General Case," which reflects the assumption of a 60-day shipping period as described in the CH-TRAMPAC and Appendix 3.4 of the CH-TRU Payload Appendices. For shipments to be completed within an approximately 1,000-mile radius, a shorter shipping period of 20 days is applicable as described in the CH-TRAMPAC and Appendix 3.5 of the CH-TRU Payload Appendices. For shipments to WIPP from Los Alamos National Laboratory (LANL), Nevada Test Site, and Rocky Flats Environmental Technology Site, a 20-day shipping period is applicable. Table 2B provides a summary of approved content codes and corresponding shipping categories for "Close-Proximity Shipments" (20-day shipping period). For shipments implementing the controls specified in the CH-TRAMPAC and Appendix 3.6 of the CH-TRU Payload Appendices, a 10-day shipping period is applicable. Table 2C provides a summary of approved content codes and corresponding shipping categories for "Controlled Shipments" (10-day shipping period).« less

Physical explanation of the periodic table.

PubMed

Ostrovsky, V N

2003-05-01

The Periodic Table of the elements, the most important generalization in chemistry, is often considered as a representative special case in the study of the relation between chemistry and physics. Its quantum interpretation was initiated, but not completed, by Niels Bohr. In this paper, post-Bohr conceptual developments are discussed from historical and epistemological points of view. The difference between high-precision numerical calculations for individual atoms and the theory of the periodic system as a whole is emphasized. Periodic laws met in Nature are not restricted to the chemical Periodic Table. A comparative study of these laws makes it possible to single out essential features that define the particular pattern of periodicity. It is shown that the periodic system of neutral ground state atoms now has a firm nonempirical quantum-theoretical basis. Alternative approaches, based on group theory and other mathematical schemes, are briefly discussed. It is argued that, while quantum theory is capable of fully accurate calculations for relatively simple atoms or molecular objects, the complexity of polyatomic molecules and chemical reactions guarantees the flourishing of chemistry as a separate scientific discipline.

Ancient Maya astronomical tables from Xultun, Guatemala.

PubMed

Saturno, William A; Stuart, David; Aveni, Anthony F; Rossi, Franco

2012-05-11

Maya astronomical tables are recognized in bark-paper books from the Late Postclassic period (1300 to 1521 C.E.), but Classic period (200 to 900 C.E.) precursors have not been found. In 2011, a small painted room was excavated at the extensive ancient Maya ruins of Xultun, Guatemala, dating to the early 9th century C.E. The walls and ceiling of the room are painted with several human figures. Two walls also display a large number of delicate black, red, and incised hieroglyphs. Many of these hieroglyphs are calendrical in nature and relate astronomical computations, including at least two tables concerning the movement of the Moon, and perhaps Mars and Venus. These apparently represent early astronomical tables and may shed light on the later books.

Building Effective Collaboration in a Comprehensive Approach (Etablissement d’une collaboration efficace selon une approche globale)

DTIC Science & Technology

2017-11-01

Improvement on this Construct Table Table 3-1 Inter-Agency Maturity Levels 3-3 Table 5-1 High -Low Scores for the Inter-Team Cooperation...Factors 5-4 Table 5-2 High -Low Scores for the Individual Interaction Format Items 5-4 Table 5-3 Number of Military and Civilian Respondents by Civil...a wilful dismissal of the capabilities of other entities, which can lead to an escalation of tensions within the CA collective. As a consequence, it

Using AFQT to Test for Gender Differences in Services

DTIC Science & Technology

2016-03-01

17  B.  MILITARY FEMALE RETENTION STUDIES ................................ 17  1.  Asch, Malchiodi, and Miller (2012...AFQT and Marriage Interactions ...................................... 63  Table 18.  OLS Regression Results for FY2005 Army and Air Force Female AFQT...and Marriage Interactions ...................................... 65  Table 19.  OLS Regression Results for FY2010 Navy and Marine Corps Female AFQT

The Octet Rules: A Dating Game for Atoms

ERIC Educational Resources Information Center

Welborn, Jennifer

2004-01-01

To develop student interest in the periodic table, the author developed a simple, but fun, role-playing activity. This play is used after students have learned the basic structure of atoms and the general layout of the periodic table. It also comes after students have learned the basics of ionic and covalent bonding. The basic idea of bonding is…

That Is Not Where that Element Goes ... Ah, the Nature of Science

ERIC Educational Resources Information Center

Nargund, Vanashri; Rogers, Meredith A. Park

2009-01-01

Learning how the periodic table has developed over time can provide an important foundation for students' future science learning, as they begin to explore the explanatory power of other models in science. In this activity, students are given the opportunity to investigate the generation of the modern periodic table, through a process of creating…

First-Year Chemistry in the Context of the Periodic Table.

ERIC Educational Resources Information Center

Woodgate, Sheila D.

1995-01-01

Describes the methods that have been developed to blend descriptive chemistry and principles in a first-year chemistry course. The key is active teaching of the subject using the periodic table as a template. Inorganic chemistry is taught using a group approach: developing trends that help teaching and learning become obvious if all elements of…

Transferable Pseudo-Classical Electrons for Aufbau of Atomic Ions

PubMed Central

Ekesan, Solen; Kale, Seyit; Herzfeld, Judith

2014-01-01

Generalizing the LEWIS reactive force field from electron pairs to single electrons, we present LEWIS• in which explicit valence electrons interact with each other and with nuclear cores via pairwise interactions. The valence electrons are independently mobile particles, following classical equations of motion according to potentials modified from Coulombic as required to capture quantum characteristics. As proof of principle, the aufbau of atomic ions is described for diverse main group elements from the first three rows of the periodic table, using a single potential for interactions between electrons of like spin and another for electrons of unlike spin. The electrons of each spin are found to distribute themselves in a fashion akin to the major lobes of the hybrid atomic orbitals, suggesting a pointillist description of the electron density. The broader validity of the LEWIS• force field is illustrated by predicting the vibrational frequencies of diatomic and triatomic hydrogen species. PMID:24752384

12 CFR 1026.18 - Content of disclosures.

Code of Federal Regulations, 2012 CFR

2012-01-01

... payment shall be disclosed separately from other periodic payments disclosed in the table under this...)-(4) of this section shall be in the form of a table, with no more than five columns, with headings... this part. The table shall contain only the information required in paragraphs (s)(2)-(4) of this...

76 FR 44018 - Agency Information Collection Activities: Proposed Collection: Comment Request

Federal Register 2010, 2011, 2012, 2013, 2014

2011-07-22

... Services Administration (HRSA) publishes periodic summaries of proposed projects being developed for... estimates are presented in two tables. The first table represents the estimated burden for the first year... month submission to calculate the total burden hours. Table 1--Estimate of Burden for the First Year...

26 CFR 1.807-1 - Mortality and morbidity tables.

Code of Federal Regulations, 2011 CFR

2011-04-01

... insurance (active life reserves); accidental death benefits 1959 Accidental Death Benefits Table. 3... tables of period 2 disablement rates and the 1930 to 1950 termination rates of the 1952 Disability Study... reserves) The 1930 to 1950 termination rates of the 1952 Disability study of the Society of Actuaries. 5...

26 CFR 1.807-1 - Mortality and morbidity tables.

Code of Federal Regulations, 2013 CFR

2013-04-01

... insurance (active life reserves); accidental death benefits 1959 Accidental Death Benefits Table. 3... tables of period 2 disablement rates and the 1930 to 1950 termination rates of the 1952 Disability Study... reserves) The 1930 to 1950 termination rates of the 1952 Disability study of the Society of Actuaries. 5...

26 CFR 1.807-1 - Mortality and morbidity tables.

Code of Federal Regulations, 2014 CFR

2014-04-01

... insurance (active life reserves); accidental death benefits 1959 Accidental Death Benefits Table. 3... tables of period 2 disablement rates and the 1930 to 1950 termination rates of the 1952 Disability Study... reserves) The 1930 to 1950 termination rates of the 1952 Disability study of the Society of Actuaries. 5...

26 CFR 1.807-1 - Mortality and morbidity tables.

Code of Federal Regulations, 2012 CFR

2012-04-01

... insurance (active life reserves); accidental death benefits 1959 Accidental Death Benefits Table. 3... tables of period 2 disablement rates and the 1930 to 1950 termination rates of the 1952 Disability Study... reserves) The 1930 to 1950 termination rates of the 1952 Disability study of the Society of Actuaries. 5...

40 CFR 35.162 - Basis for allotment.

Code of Federal Regulations, 2011 CFR

2011-07-01

... are presented in Table 1 of this section, with their associated elements, sub-elements, and supporting... periodic adjustments for inflation and a maximum funding level (150 percent of its previous fiscal year...) 2004, according to the schedule presented in Table 2 of this section: Table 2—Component Weights in the...

40 CFR 35.162 - Basis for allotment.

Code of Federal Regulations, 2012 CFR

2012-07-01

... are presented in Table 1 of this section, with their associated elements, sub-elements, and supporting... periodic adjustments for inflation and a maximum funding level (150 percent of its previous fiscal year...) 2004, according to the schedule presented in Table 2 of this section: Table 2—Component Weights in the...

29 CFR Appendix A to Subpart S of... - Decompression Tables

Code of Federal Regulations, 2010 CFR

2010-07-01

... working period at 20 pounds gauge. Decompression Table No. 1: 20 pounds for 4 hours, total decompression... minutes per pound. Stage 2 (final) elapsed time 40 Total time 43 Example No. 2: 5-hour working period at... pressure p.s.i.g. Working period hours 1/2 1 11/2 2 3 4 5 6 7 8 Over 8 9 to 12 3 3 3 3 3 3 3 3 3 3 3 14 6 6...

A multivariate time-frequency method to characterize the influence of respiration over heart period and arterial pressure

NASA Astrophysics Data System (ADS)

Orini, Michele; Bailón, Raquel; Laguna, Pablo; Mainardi, Luca T.; Barbieri, Riccardo

2012-12-01

Respiratory activity introduces oscillations both in arterial pressure and heart period, through mechanical and autonomic mechanisms. Respiration, arterial pressure, and heart period are, generally, non-stationary processes and the interactions between them are dynamic. In this study we present a methodology to robustly estimate the time course of cross spectral indices to characterize dynamic interactions between respiratory oscillations of heart period and blood pressure, as well as their interactions with respiratory activity. Time-frequency distributions belonging to Cohen's class are used to estimate time-frequency (TF) representations of coherence, partial coherence and phase difference. The characterization is based on the estimation of the time course of cross spectral indices estimated in specific TF regions around the respiratory frequency. We used this methodology to describe the interactions between respiration, heart period variability (HPV) and systolic arterial pressure variability (SAPV) during tilt table test with both spontaneous and controlled respiratory patterns. The effect of selective autonomic blockade was also studied. Results suggest the presence of common underling mechanisms of regulation between cardiovascular signals, whose interactions are time-varying. SAPV changes followed respiratory flow both in supine and standing positions and even after selective autonomic blockade. During head-up tilt, phase differences between respiration and SAPV increased. Phase differences between respiration and HPV were comparable to those between respiration and SAPV during supine position, and significantly increased during standing. As a result, respiratory oscillations in SAPV preceded respiratory oscillations in HPV during standing. Partial coherence was the most sensitive index to orthostatic stress. Phase difference estimates were consistent among spontaneous and controlled breathing patterns, whereas coherence was higher in spontaneous breathing. Parasympathetic blockade did not affect interactions between respiration and SAPV, reduced the coherence between SAPV and HPV and between respiration and HPV. Our results support the hypothesis that non-autonomic, possibly mechanically mediated, mechanisms also contributes to the respiratory oscillations in HPV. A small contribution of sympathetic activity on HPV-SAPV interactions around the respiratory frequency was also observed.

Cycles of explosive and effusive eruptions at Kīlauea Volcano, Hawai‘i

USGS Publications Warehouse

Swanson, Don; Rose, Timothy R.; Mucek, Adonara E; Garcia, Michael O.; Fiske, Richard S.; Mastin, Larry G.

2014-01-01

The subaerial eruptive activity at Kīlauea Volcano (Hawai‘i) for the past 2500 yr can be divided into 3 dominantly effusive and 2 dominantly explosive periods, each lasting several centuries. The prevailing style of eruption for 60% of this time was explosive, manifested by repeated phreatic and phreatomagmatic activity in a deep summit caldera. During dominantly explosive periods, the magma supply rate to the shallow storage volume beneath the summit dropped to only a few percent of that during mainly effusive periods. The frequency and duration of explosive activity are contrary to the popular impression that Kīlauea is almost unceasingly effusive. Explosive activity apparently correlates with the presence of a caldera intersecting the water table. The decrease in magma supply rate may result in caldera collapse, because erupted or intruded magma is not replaced. Glasses with unusually high MgO, TiO2, and K2O compositions occur only in explosive tephra (and one related lava flow) and are consistent with disruption of the shallow reservoir complex during caldera formation. Kīlauea is a complex, modulated system in which melting rate, supply rate, conduit stability (in both mantle and crust), reservoir geometry, water table, and many other factors interact with one another. The hazards associated with explosive activity at Kīlauea’s summit would have major impact on local society if a future dominantly explosive period were to last several centuries. The association of lowered magma supply, caldera formation, and explosive activity might characterize other basaltic volcanoes, but has not been recognized.

Interactive plant functional group and water table effects on decomposition and extracellular enzyme activity in Sphagnum peatlands

Treesearch

Magdalena M. Wiedermann; Evan S. Kane; Lynette R. Potvin; Erik A. Lilleskov

2017-01-01

Peatland decomposition may be altered by hydrology and plant functional groups (PFGs), but exactly how the latter influences decomposition is unclear, as are potential interactions of these factors.We used a factorial mesocosm experiment with intact 1 m3 peat monoliths to explore how PFGs (sedges vs Ericaceae) and water table level individually...

Interactive access to forest inventory data for the South Central United States

Treesearch

William H. McWilliams

1990-01-01

On-line access to USDA, Forest Service successive forest inventory data for the South Central United States is provided by two computer systems. The Easy Access to Forest Inventory and Analysis Tables program (EZTAB) produces a set of tables for specific geographic areas. The Interactive Graphics and Retrieval System (INGRES) is a database management system that...

Use of Automatic Interaction Detector in Monitoring Faculty Salaries. AIR 1983 Annual Forum Paper.

ERIC Educational Resources Information Center

Cohen, Margaret E.

A university's use of the Automatic Interaction Detector (AID) to monitor faculty salary data is described. The first step consists of examining a tree diagram and summary table produced by AID. The tree is used to identify the characteristics of faculty at different salary levels. The table is used to determine the explanatory power of the…

Effect of Programmed Instruction on Students' Attitude towards Structure of the Atom and the Periodic Table among Kenyan Secondary Schools

ERIC Educational Resources Information Center

Wangila, M. J.; Martin, W.; Ronald, M.

2015-01-01

This study examined the effect of Programmed Instruction on students' attitude towards Structure of the Atom and the Periodic Table (SAPT) among mixed (co-educational) secondary schools of Butere district, Kakamega county, Kenya. The quasi-experimental research design was adopted, using the nonrandomized Solomon four-group as a model. The sample…

Chemistry and the Periodic Table: Teacher's Guide Levels A, B, and C. Preliminary Limited Edition.

ERIC Educational Resources Information Center

Cambridge Physics Outlet, Woburn, MA. Education Programs Dept.

This is a two-part curriculum package for the teaching of chemistry and the periodic table. The first part, the Teacher's Guide, contains information necessary for using the equipment in a typical classroom including learning goals, vocabulary, math skills, and sample data for each activity. The second part of the package consists of photocopy…

40 CFR 63.129 - Transfer operations provisions-reporting and recordkeeping for performance tests and notification...

Code of Federal Regulations, 2012 CFR

2012-07-01

...)(4) through (a)(7) of this section in the next Periodic Report as specified in § 63.152(c) of this..., or carbon adsorbers specified in table 7 of this subpart, recorded during the performance test, and... specified in table 7 of this subpart, and averaged over the time period of the performance test; and (iii...

40 CFR 63.129 - Transfer operations provisions-reporting and recordkeeping for performance tests and notification...

Code of Federal Regulations, 2013 CFR

2013-07-01

...)(4) through (a)(7) of this section in the next Periodic Report as specified in § 63.152(c) of this..., or carbon adsorbers specified in table 7 of this subpart, recorded during the performance test, and... specified in table 7 of this subpart, and averaged over the time period of the performance test; and (iii...

40 CFR 63.129 - Transfer operations provisions-reporting and recordkeeping for performance tests and notification...

Code of Federal Regulations, 2014 CFR

2014-07-01

...)(4) through (a)(7) of this section in the next Periodic Report as specified in § 63.152(c) of this..., or carbon adsorbers specified in table 7 of this subpart, recorded during the performance test, and... specified in table 7 of this subpart, and averaged over the time period of the performance test; and (iii...

Matching Element Symbols with State Abbreviations: A Fun Activity for Browsing the Periodic Table of Chemical Elements

ERIC Educational Resources Information Center

Woelk, Klaus

2009-01-01

A classroom activity is presented in which students are challenged to find matches between the United States two-letter postal abbreviations for states and chemical element symbols. The activity aims to lessen negative apprehensions students might have when the periodic table of the elements with its more than 100 combinations of letters is first…

Design and Implementation of a Bingo Game for Teaching the Periodic Table

ERIC Educational Resources Information Center

Franco-Mariscal, Antonio Joaquín; Cano-Iglesias, María José

2014-01-01

This article describes a game designed to help Spanish high school students (grade 10, age 15-16) understand the periodic table. It combines some features of bingo and a puzzle in the same pedagogical game, making it an engaging approach for learning about this important teaching tool. Students are given a verbal clue -- the name of a chemical…

40 CFR 63.129 - Transfer operations provisions-reporting and recordkeeping for performance tests and notification...

Code of Federal Regulations, 2011 CFR

2011-07-01

...)(4) through (a)(7) of this section in the next Periodic Report as specified in § 63.152(c) of this..., or carbon adsorbers specified in table 7 of this subpart, recorded during the performance test, and... specified in table 7 of this subpart, and averaged over the time period of the performance test; and (iii...

Large rivers of the United States

USGS Publications Warehouse

Iseri, Kathleen T.; Langbein, Walter Basil

1974-01-01

Information on the flow of the 28 largest rivers in the United States is presented for the base periods 1931-60 and 1941-70. Drainage area, stream length, source, and mouth are included. Table 1 shows the average discharge at downstream gaging stations. Table 2 lists large rivers in order of average discharge at the mouth, based on the period 1941-70.

Periodic Table of the Elements in the Perspective of Artificial Neural Networks

ERIC Educational Resources Information Center

Lemes, Mauricio R.; Dal Pino, Arnaldo

2011-01-01

Although several chemical elements were not known by end of the 19th century, Mendeleev came up with an astonishing achievement, the periodic table of elements. He was not only able to predict the existence of (then) new elements, but also to provide accurate estimates of their chemical and physical properties. This is a profound example of the…

12 CFR 226.18 - Content of disclosures.

Code of Federal Regulations, 2011 CFR

2011-01-01

..., the balloon payment shall be disclosed separately from other periodic payments disclosed in the table... information in paragraphs (s)(2)-(4) of this section shall be in the form of a table, with no more than five...) in appendix H to this part. The table shall contain only the information required in paragraphs (s)(2...

46 CFR 502.221 - Briefs; requests for findings.

Code of Federal Regulations, 2010 CFR

2010-10-01

... presiding officer shall fix the time and manner of filing briefs and any enlargement of time. The period of... subject index or table of contents with page references and a list of authorities cited. (f) All briefs... pages containing the table of contents, table of authorities, and certificate of service, unless the...

IMS/Satellite Situation Center report: Predicted orbit plots for IMP-J-1976

NASA Technical Reports Server (NTRS)

1975-01-01

Predicted orbit plots for the IMP-J satellite were given for the time period January-December 1976. These plots are shown in three projections. The time period covered by each set of projections is 12 days and 6 hours, corresponding approximately to the period of IMP-J. The three coordinate systems used are the Geocentric Solar Ecliptic system (GSE), the Geocentric Solar Magnetospheric system (GSM), and the Solar Magnetic system (SM). For each of the three projections, time ticks and codes are given on the satellite trajectories. The codes are interpreted in the table at the base of each plot. Time is given in the table as year/day/decimal hour, and the total time covered by each plot is shown at the bottom of each table.

Comparative study of species sensitivity distributions based on non-parametric kernel density estimation for some transition metals.

PubMed

Wang, Ying; Feng, Chenglian; Liu, Yuedan; Zhao, Yujie; Li, Huixian; Zhao, Tianhui; Guo, Wenjing

2017-02-01

Transition metals in the fourth period of the periodic table of the elements are widely widespread in aquatic environments. They could often occur at certain concentrations to cause adverse effects on aquatic life and human health. Generally, parametric models are mostly used to construct species sensitivity distributions (SSDs), which result in comparison for water quality criteria (WQC) of elements in the same period or group of the periodic table might be inaccurate and the results could be biased. To address this inadequacy, the non-parametric kernel density estimation (NPKDE) with its optimal bandwidths and testing methods were developed for establishing SSDs. The NPKDE was better fit, more robustness and better predicted than conventional normal and logistic parametric density estimations for constructing SSDs and deriving acute HC5 and WQC for transition metals in the fourth period of the periodic table. The decreasing sequence of HC5 values for the transition metals in the fourth period was Ti > Mn > V > Ni > Zn > Cu > Fe > Co > Cr(VI), which were not proportional to atomic number in the periodic table, and for different metals the relatively sensitive species were also different. The results indicated that except for physical and chemical properties there are other factors affecting toxicity mechanisms of transition metals. The proposed method enriched the methodological foundation for WQC. Meanwhile, it also provided a relatively innovative, accurate approach for the WQC derivation and risk assessment of the same group and period metals in aquatic environments to support protection of aquatic organisms. Copyright © 2016 Elsevier Ltd. All rights reserved.

Cerium; crystal structure and position in the periodic table.

PubMed

Johansson, Börje; Luo, Wei; Li, Sa; Ahuja, Rajeev

2014-09-17

The properties of the cerium metal have intrigued physicists and chemists for many decades. In particular a lot of attention has been directed towards its high pressure behavior, where an isostructural volume collapse (γ phase → α phase) has been observed. Two main models of the electronic aspect of this transformation have been proposed; one where the 4f electron undergoes a change from being localized into an itinerant metallic state, and one where the focus is on the interaction between the 4f electron and the conduction electrons, often referred to as the Kondo volume collapse model. However, over the years it has been repeatedly questioned whether the cerium collapse really is isostructural. Most recently, detailed experiments have been able to remove this worrisome uncertainty. Therefore the isostructural aspect of the α-γ transition has now to be seriously addressed in the theoretical modeling, something which has been very much neglected. A study of this fundamental characteristic of the cerium volume collapse is made in present paper and we show that the localized [rlhar2 ] delocalized 4f electron picture provides an adequate description of this unique behavior. This agreement makes it possible to suggest that an appropriate crossroad position for cerium in The Periodic Table.

Cerium; Crystal Structure and Position in The Periodic Table

PubMed Central

Johansson, Börje; Luo, Wei; Li, Sa; Ahuja, Rajeev

2014-01-01

The properties of the cerium metal have intrigued physicists and chemists for many decades. In particular a lot of attention has been directed towards its high pressure behavior, where an isostructural volume collapse (γ phase → α phase) has been observed. Two main models of the electronic aspect of this transformation have been proposed; one where the 4f electron undergoes a change from being localized into an itinerant metallic state, and one where the focus is on the interaction between the 4f electron and the conduction electrons, often referred to as the Kondo volume collapse model. However, over the years it has been repeatedly questioned whether the cerium collapse really is isostructural. Most recently, detailed experiments have been able to remove this worrisome uncertainty. Therefore the isostructural aspect of the α-γ transition has now to be seriously addressed in the theoretical modeling, something which has been very much neglected. A study of this fundamental characteristic of the cerium volume collapse is made in present paper and we show that the localized ⇌ delocalized 4f electron picture provides an adequate description of this unique behavior. This agreement makes it possible to suggest that an appropriate crossroad position for cerium in The Periodic Table. PMID:25227991

40 CFR 63.502 - Equipment leak and heat exchange system provisions.

Code of Federal Regulations, 2010 CFR

2010-07-01

... § 63.182(a)(3) and § 63.182(d) (i.e., Periodic Reports) shall be submitted as part of the Periodic... achieving the applicable compliance date. (i) When § 63.166(b)(4)(i) refers to Table 9 of subpart G of this part, the owner or operator is only required to consider organic HAP listed on Table 9 of subpart G of...

40 CFR 63.502 - Equipment leak and heat exchange system provisions.

Code of Federal Regulations, 2013 CFR

2013-07-01

... § 63.182(a)(3) and § 63.182(d) (i.e., Periodic Reports) shall be submitted as part of the Periodic... achieving the applicable compliance date. (i) When § 63.166(b)(4)(i) refers to Table 9 of subpart G of this part, the owner or operator is only required to consider organic HAP listed on Table 9 of subpart G of...

The Role of Triads in the Evolution of the Periodic Table: Past and Present

ERIC Educational Resources Information Center

Scerri, Eric

2008-01-01

The purpose of this article is to propose a new design for the presentation of the periodic system of the elements. It is a system that highlights the fundamental importance of elements as basic substances rather than elements as simple substances, a distinction that is explained in the article. The proposed table is a variant of the Janet or…

A nuclear chocolate box: the periodic table of nuclear medicine.

PubMed

Blower, Philip J

2015-03-21

Radioisotopes of elements from all parts of the periodic table find both clinical and research applications in radionuclide molecular imaging and therapy (nuclear medicine). This article provides an overview of these applications in relation to both the radiological properties of the radionuclides and the chemical properties of the elements, indicating past successes, current applications and future opportunities and challenges for inorganic chemistry.

40 CFR 63.502 - Equipment leak and heat exchange system provisions.

Code of Federal Regulations, 2014 CFR

2014-07-01

... § 63.182(a)(3) and § 63.182(d) (i.e., Periodic Reports) shall be submitted as part of the Periodic... achieving the applicable compliance date. (i) When § 63.166(b)(4)(i) refers to Table 9 of subpart G of this part, the owner or operator is only required to consider organic HAP listed on Table 9 of subpart G of...

40 CFR 63.502 - Equipment leak and heat exchange system provisions.

Code of Federal Regulations, 2012 CFR

2012-07-01

... § 63.182(a)(3) and § 63.182(d) (i.e., Periodic Reports) shall be submitted as part of the Periodic... achieving the applicable compliance date. (i) When § 63.166(b)(4)(i) refers to Table 9 of subpart G of this part, the owner or operator is only required to consider organic HAP listed on Table 9 of subpart G of...

40 CFR 63.502 - Equipment leak and heat exchange system provisions.

Code of Federal Regulations, 2011 CFR

2011-07-01

... § 63.182(a)(3) and § 63.182(d) (i.e., Periodic Reports) shall be submitted as part of the Periodic... achieving the applicable compliance date. (i) When § 63.166(b)(4)(i) refers to Table 9 of subpart G of this part, the owner or operator is only required to consider organic HAP listed on Table 9 of subpart G of...

Evaluation of Existing and New Periodic Tables of the Elements for the Chemistry Education of Blind Students

ERIC Educational Resources Information Center

Fantin, Dennis; Sutton, Marc; Daumann, Lena J.; Fischer, Kael F.

2016-01-01

As a symbol of the power and majesty of science, the periodic table has inspired many scientists-to-be to investigate the deep secrets of nature through the study of chemistry. In the spirit of inclusion, blind students too deserve and need to have their curiosity about the inner workings of nature stimulated through greater exposure to this…

Ecohydrological controls over water budgets in floodplain meadows

NASA Astrophysics Data System (ADS)

Morris, Paul J.; Verhoef, Anne; Macdonald, David M. J.; Gardner, Cate M.; Punalekar, Suvarna M.; Tatarenko, Irina; Gowing, David

2013-04-01

Floodplain meadows are important ecosystems, characterised by high plant species richness including rare species. Fine-scale partitioning along soil hydrological gradients allows many species to co-exist. Concerns exist that even modest changes to soil hydrological regime as a result of changes in management or climate may endanger floodplain meadows communities. As such, understanding the interaction between biological and physical controls over floodplain meadow water budgets is important to understanding their likely vulnerability or resilience. Floodplain meadow plant communities are highly heterogeneous, leading to patchy landscapes with distinct vegetation. However, it is unclear whether this patchiness in plant distribution is likely to translate into heterogeneous soil-vegetation-atmosphere transfer (SVAT) rates of water and heat, or whether floodplain meadows can reasonably be treated as internally homogeneous in physical terms despite this patchy vegetation. We used a SVAT model, the Soil-Water-Atmosphere-Plants (SWAP) model by J.C. van Dam and co-workers, to explore the controls over the partitioning of water budgets in floodplain meadows. We conducted our research at Yarnton Mead on the River Thames in Oxfordshire, one of the UK's best remaining examples of a floodplain meadow, and which is still managed and farmed in a low-intensity mixed-use manner. We used soil and plant data from our site to parameterise SWAP; we drove the model using in-situ half-hourly meteorological data. We analysed the model's sensitivity to a range of soil and plant parameters - informed by our measurements - in order to assess the effects of different plant communities on SVAT fluxes. We used a novel method to simulate water-table dynamics at the site; the simulated water tables provide a lower boundary condition for SWAP's hydrological submodel. We adjusted the water-table model's parameters so as to represent areas of the mead with contrasting topography, and so different heights above the river level and different moisture and drainage regimes. The model was most sensitive to changes in the parameters that define the water-table model. Plant above-ground parameters, such as leaf area index and canopy height also had strong influences on simulated fluxes. The model exhibited low sensitivity to plant root parameters; this was particularly true during wet periods when the simulated plant communities were oxygen stressed. Changes in soil texture profile exhibited an intermediate level of control over SVAT fluxes. Our findings indicate that unlike in environments with deep water tables, such as drylands and headwater basins, high-quality water-table data with decimetre or even centimetre accuracy are important to accurate simulation of SVAT fluxes. Future studies that seek to simulate SVAT fluxes in shallow groundwater systems should either use high frequency, high-quality water-table observations as part of the driving data set, or should ensure that water-table dynamics and their interactions with surface processes can be simulated in a robust and physically meaningful manner. The low sensitivity of our model to plant root parameters reflects the proximity of the water table to the ground surface and the fact that the simulated plant community is rarely water-stressed, and again contrasts with findings from existing SVAT model research in environments with deep water tables.

A staging table for the embryonic development of the brownbanded bamboo shark (Chiloscyllium punctatum)

PubMed Central

Onimaru, Koh; Motone, Fumio; Kiyatake, Itsuki; Nishida, Kiyonori

2018-01-01

Background: Studying cartilaginous fishes (chondrichthyans) has helped us understand vertebrate evolution and diversity. However, resources such as genome sequences, embryos, and detailed staging tables are limited for species within this clade. To overcome these limitations, we have focused on a species, the brownbanded bamboo shark (Chiloscyllium punctatum), which is a relatively common aquarium species that lays eggs continuously throughout the year. In addition, because of its relatively small genome size, this species is promising for molecular studies. Results: To enhance biological studies of cartilaginous fishes, we establish a normal staging table for the embryonic development of the brownbanded bamboo shark. Bamboo shark embryos take around 118 days to reach the hatching period at 25°C, which is approximately 1.5 times as fast as the small‐spotted catshark (Scyliorhinus canicula) takes. Our staging table divides the embryonic period into 38 stages. Furthermore, we found culture conditions that allow early embryos to grow in partially opened egg cases. Conclusions: In addition to the embryonic staging table, we show that bamboo shark embryos exhibit relatively fast embryonic growth and are amenable to culture, key characteristics that enhance their experimental utility. Therefore, the present study is a foundation for cartilaginous fish research. Developmental Dynamics 247:712–723, 2018. © 2017 Wiley Periodicals, Inc. PMID:29396887

The influence of irrigation-induced water table fluctuation on iron redistribution and arsenic immobilization within the unsaturation zone.

PubMed

Chi, Zeyong; Xie, Xianjun; Pi, Kunfu; Wang, Yanxin; Li, Junxia; Qian, Kun

2018-05-08

Given the long-term potential risk of arsenic (As)-contaminated agricultural soil to public health, the redistribution of iron (Fe) and immobilization of As within the unsaturation zone during irrigation and consequent water table fluctuations were studied via a column experiment and corresponding geochemical modeling. Experimental results show that As and Fe accumulated significantly at the top of the column during irrigation. A tremendous increase in As and Fe accumulation rates exists after water table recovery. It was deduced that Fe(II) and As(III) were oxidized directly by O 2 at the period of low water table. But the production of hydroxyl radical (OH) was promoted at the period of high water table due to the oxidation of adsorbed Fe(II). The generated OH further accelerate the oxidation of Fe(II) and As(III). Moreover, the combination of As and Fe is more stronger at the top of the column due to the transformation of combined states of As from surface complexation into surface precipitation with the growth of Fe(III) minerals. This study details the processes and mechanisms of As and Fe immobilization within the unsaturation zone during different irrigation periods and accordingly provides some insights to mitigate As accumulation in topsoil. Copyright © 2018 Elsevier B.V. All rights reserved.

The Periodic Round Table (by Gary Katz)

NASA Astrophysics Data System (ADS)

Rodgers, Reviewed By Glen E.

2000-02-01

Unwrapping and lifting the Periodic Round Table out of its colorful box is an exciting experience for a professional chemist or a chemistry student. Touted as a "new way of looking at the elements", it is certainly thatat least at first blush. The "table" consists of four sets of two finely finished hardwood discs each with the following elemental symbols and their corresponding atomic numbers pleasingly and symmetrically wood-burned into their faces. The four sets of two discs are 1 1/2, 3, 4 1/2, and 6 in. in diameter, each disc is 3/4 in. thick, and therefore the entire "round table" stands 6 in. high and is 6 in. in diameter at its base. The eight beautifully polished discs (represented below) are held together by center dowels that allow each to be rotated separately.

Impact of groundwater capillary rises as lower boundary conditions for soil moisture in a land surface model

NASA Astrophysics Data System (ADS)

Vergnes, Jean-Pierre; Decharme, Bertrand; Habets, Florence

2014-05-01

Groundwater is a key component of the global hydrological cycle. It sustains base flow in humid climate while it receives seepage in arid region. Moreover, groundwater influences soil moisture through water capillary rise into the soil and potentially affects the energy and water budget between the land surface and the atmosphere. Despite its importance, most global climate models do not account for groundwater and their possible interaction with both the surface hydrology and the overlying atmosphere. This study assesses the impact of capillary rise from shallow groundwater on the simulated water budget over France. The groundwater scheme implemented in the Total Runoff Integrated Pathways (TRIP) river routing model in a previous study is coupled with the Interaction between Soil Biosphere Atmosphere (ISBA) land surface model. In this coupling, the simulated water table depth acts as the lower boundary condition for the soil moisture diffusivity equation. An original parameterization accounting for the subgrid elevation inside each grid cell is proposed in order to compute this fully-coupled soil lower boundary condition. Simulations are performed at high (1/12°) and low (0.5°) resolutions and evaluated over the 1989-2009 period. Compared to a free-drain experiment, upward capillary fluxes at the bottom of soil increase the mean annual evapotranspiration simulated over the aquifer domain by 3.12 % and 1.54 % at fine and low resolutions respectively. This process logically induces a decrease of the simulated recharge from ISBA to the aquifers and contributes to enhance the soil moisture memory. The simulated water table depths are then lowered, which induces a slight decrease of the simulated mean annual river discharges. However, the fully-coupled simulations compare well with river discharge and water table depth observations which confirms the relevance of the coupling formalism.

Interaction of coastal urban groundwater with infrastructure due to tidal variation

NASA Astrophysics Data System (ADS)

Su, X.; Prigiobbe, V.

2017-12-01

The urbanization of coastal areas has been increasing during the last century. For these areas, groundwater is one of major source of potable water for the population, the industry, and the agriculture, with an average demand of 30 m3/s [1,2]. Simultaneously, the rate of sea-level rise has been recorded to be approximately 40 mm/yr [3], with potential negative consequences on the coastal groundwater. As the sea-level rises, sea-water intrusion into potable aquifers may become more important [4] and the water table of the shallow aquifer underneath the coastal areas may rise [5]. Therefore, the water quality of the aquifer decreases and interaction between the shallow aquifer and infrastructure may occur. In particular, in the latter case, disruptive events may become more frequent, such as infiltration of groundwater into damaged sewer causing discharge of untreated sewage (combined sewer overflows, CSOs). Here, a study is presented on the modeling of urban groundwater in coastal areas to identify the cause of frequent CSOs in dry weather conditions, i.e., CSOs are not expected to occur. The evolution of the water table was described in response of tidal variation to quantify the interaction between the shallow aquifer and an aging sewer. The watershed of the city of Hoboken (NJ), at the estuary of Hudson river, was implemented in MODFLOW. The model was built using dataset from various sources. Geostatistic was applied to create the aquifer geology and measurements of the water table from monitoring wells within the urban area were used as boundary conditions and model validation. Preliminary results of the simulations are shown the figure, where the water table over a period of 7 months was calculated. The groundwater model with the sewer will help identifying the parts of the network that might be submerged by the groundwater and, therefore, subjected to infiltration. Combining groundwater and sewer modeling with the hydrograph separation method [6], the model prediction of infiltration will be validated. References [1] Pimentel et al. BioScience, 54, 909-918, 2004. [2] Owolabi Glob. Ini., 11, 69-87, 2017. [3] Milne Astro. Geophys., 49, 224-228, 2008 [4] Vzquez-Su et al. Hydro. J. 13, 522-533, 2005. [5] Gburek et al. Ground Water, 37,175-184, 1999. [6] Prigiobbe and Giulianelli. Water Sci.Tech. 60, 727-735, 2009.

Investigating the Effectiveness of Storylines Embedded within a Context-Based Approach: The Case for the Periodic Table

ERIC Educational Resources Information Center

Demircioglu, Hulya; Demircioglu, Gokhan; Calik, Muammar

2009-01-01

We investigated the effect of the context-based approach on 9th grade students' conceptions of the Periodic Table. Within a nonequivalent pretest-posttest control group design the study was conducted with 80 grade 9 students (aged 15-16) drawn from two classes (39 and 41 students) in a high school in Turkey. The experimental group was exposed to…

A Reconstruction of Development of the Periodic Table Based on History and Philosophy of Science and Its Implications for General Chemistry Textbooks

ERIC Educational Resources Information Center

Brito, Angmary; Rodriguez, Maria A.; Niaz, Mansoor

2005-01-01

The objectives of this study are: (a) elaboration of a history and philosophy of science (HPS) framework based on a reconstruction of the development of the periodic table; (b) formulation of seven criteria based on the framework; and (c) evaluation of 57 freshman college-level general chemistry textbooks with respect to the presentation of the…

Directed evolution of the periodic table: probing the electronic structure of late actinides.

PubMed

Marsh, M L; Albrecht-Schmitt, T E

2017-07-25

Recent investigations of the coordination chemistry and physical properties of berkelium (Z = 97) and californium (Z = 98) have revealed fundamental differences between post-curium elements and lighter members of the actinide series. This review highlights these developments and chronicles key findings and concepts from the last half-century that have helped usher in a new understanding of the evolution of electronic structure in the periodic table.

40 CFR Appendix D to Part 61 - Methods for Estimating Radionuclide Emissions

Code of Federal Regulations, 2011 CFR

2011-07-01

... Table 1. Table 1—Adjustment to Emission Factors for Effluent Controls Controls Types of radionuclides... applicable to gaseous radionuclides; periodic testing is prudent to ensure high removal efficiency. Fabric...

40 CFR Appendix D to Part 61 - Methods for Estimating Radionuclide Emissions

Code of Federal Regulations, 2013 CFR

2013-07-01

... Table 1. Table 1—Adjustment to Emission Factors for Effluent Controls Controls Types of radionuclides... applicable to gaseous radionuclides; periodic testing is prudent to ensure high removal efficiency. Fabric...

Piezoelectric Resonance Enhanced Microwave And Optoelectronic Interactive Devices

DTIC Science & Technology

2013-05-01

0080 glass complex permittivity measured by NECVP method near 4.01GHz (TE103) and 5.19 (TE105) GHz...144 Table A.4 Corning 0080 glass complex permittivity measured by post resonant technique ...... 144 Table A.5...144 Table A.6 Complex permittivity of Pyrex glass rod measured by NECVP method near 4.01GHz (TE103) and 5.19

12 CFR 1026.60 - Credit and charge card applications and solicitations.

Code of Federal Regulations, 2013 CFR

2013-01-01

... states in the table. (2) Fees for issuance or availability. (i) Any annual or other periodic fee that may... pursuant to paragraph (c), (d)(2), (e)(1) or (f) of this section generally shall be in the form of a table with headings, content, and format substantially similar to any of the applicable tables found in G-10...

12 CFR 226.5a - Credit and charge card applications and solicitations.

Code of Federal Regulations, 2011 CFR

2011-01-01

... states in the table. (2) Fees for issuance or availability. (i) Any annual or other periodic fee that may...)(1) or (f) of this section generally shall be in the form of a table with headings, content, and format substantially similar to any of the applicable tables found in G-10 in appendix G to this part...

12 CFR 226.5a - Credit and charge card applications and solicitations.

Code of Federal Regulations, 2013 CFR

2013-01-01

... states in the table. (2) Fees for issuance or availability. (i) Any annual or other periodic fee that may...), (d)(2), (e)(1) or (f) of this section generally shall be in the form of a table with headings, content, and format substantially similar to any of the applicable tables found in G-10 in appendix G to...

40 CFR 63.1328 - Heat exchange systems provisions.

Code of Federal Regulations, 2010 CFR

2010-07-01

... subpart. (e) When § 63.104 refers to Table 4 of subpart F of this part or Table 9 of subpart G of this part, the owner or operator is only required to consider organic HAP listed on Table 6 of this subpart... reported in the Periodic Reports required by § 63.152(c), the owner or operator shall instead report the...

40 CFR 63.1328 - Heat exchange systems provisions.

Code of Federal Regulations, 2011 CFR

2011-07-01

... subpart. (e) When § 63.104 refers to Table 4 of subpart F of this part or Table 9 of subpart G of this part, the owner or operator is only required to consider organic HAP listed on Table 6 of this subpart... reported in the Periodic Reports required by § 63.152(c), the owner or operator shall instead report the...

40 CFR 63.1328 - Heat exchange systems provisions.

Code of Federal Regulations, 2012 CFR

2012-07-01

... subpart. (e) When § 63.104 refers to Table 4 of subpart F of this part or Table 9 of subpart G of this part, the owner or operator is only required to consider organic HAP listed on Table 6 of this subpart... reported in the Periodic Reports required by § 63.152(c), the owner or operator shall instead report the...

12 CFR 1026.60 - Credit and charge card applications and solicitations.

Code of Federal Regulations, 2014 CFR

2014-01-01

... states in the table. (2) Fees for issuance or availability. (i) Any annual or other periodic fee that may... pursuant to paragraph (c), (d)(2), (e)(1) or (f) of this section generally shall be in the form of a table with headings, content, and format substantially similar to any of the applicable tables found in G-10...

40 CFR 63.10006 - When must I conduct subsequent performance tests or tune-ups?

Code of Federal Regulations, 2012 CFR

2012-07-01

... applicable periodic HCl emissions tests according to Table 5 to this subpart and § 63.10007 at least... performance tests according to Table 5 to this subpart and § 63.10007 at least every year. (b) For affected... years (once every year for Hg) according to Table 5 and § 63.10007. Should subsequent emissions testing...

12 CFR 1026.60 - Credit and charge card applications and solicitations.

Code of Federal Regulations, 2012 CFR

2012-01-01

... states in the table. (2) Fees for issuance or availability. (i) Any annual or other periodic fee that may... pursuant to paragraph (c), (d)(2), (e)(1) or (f) of this section generally shall be in the form of a table with headings, content, and format substantially similar to any of the applicable tables found in G-10...

12 CFR 226.5a - Credit and charge card applications and solicitations.

Code of Federal Regulations, 2014 CFR

2014-01-01

... states in the table. (2) Fees for issuance or availability. (i) Any annual or other periodic fee that may...), (d)(2), (e)(1) or (f) of this section generally shall be in the form of a table with headings, content, and format substantially similar to any of the applicable tables found in G-10 in appendix G to...

12 CFR 226.5a - Credit and charge card applications and solicitations.

Code of Federal Regulations, 2012 CFR

2012-01-01

... states in the table. (2) Fees for issuance or availability. (i) Any annual or other periodic fee that may...)(1) or (f) of this section generally shall be in the form of a table with headings, content, and format substantially similar to any of the applicable tables found in G-10 in appendix G to this part...

40 CFR 63.10006 - When must I conduct subsequent performance tests or tune-ups?

Code of Federal Regulations, 2014 CFR

2014-07-01

... limit, you must conduct all applicable periodic HCl emissions tests according to Table 5 to this subpart... performance tests according to Table 5 to this subpart and § 63.10007 at least every year. (b) For affected... years (once every year for Hg) according to Table 5 and § 63.10007. Should subsequent emissions testing...

40 CFR 63.10006 - When must I conduct subsequent performance tests or tune-ups?

Code of Federal Regulations, 2013 CFR

2013-07-01

... limit, you must conduct all applicable periodic HCl emissions tests according to Table 5 to this subpart... performance tests according to Table 5 to this subpart and § 63.10007 at least every year. (b) For affected... years (once every year for Hg) according to Table 5 and § 63.10007. Should subsequent emissions testing...

Hyperfine interactions of trans-lead elements studied by nuclear radiations

DOE Office of Scientific and Technical Information (OSTI.GOV)

Ansaldo, E.J.

1973-09-16

The applications of nuclear radiation methods to the study of hyperfine interactions (hfi) for elements beyond Pb in the periodic table are reviewed. A general discussion of hfi is presented along with a review of specific methods. The techniques are illustrated whenever possible by their application to the actinides, with emphasis on the unsolved aspects of the results. A special method of sample preparation is ion implantation, in which stable or radioactive ions of practically any element are shot into the host, either by means of isotope separators or the recoil energy of nuclear reactions or radioactive decays. The locationmore » of the implanted (recoiled) atom in the lattice has to be assessed for a reliable determination of the hfi. Therefore, a chapter on the channeling technique is also included. (JRD)« less

Visualize Your Data with Google Fusion Tables

NASA Astrophysics Data System (ADS)

Brisbin, K. E.

2011-12-01

Google Fusion Tables is a modern data management platform that makes it easy to host, manage, collaborate on, visualize, and publish tabular data online. Fusion Tables allows users to upload their own data to the Google cloud, which they can then use to create compelling and interactive visualizations with the data. Users can view data on a Google Map, plot data in a line chart, or display data along a timeline. Users can share these visualizations with others to explore and discover interesting trends about various types of data, including scientific data such as invasive species or global trends in disease. Fusion Tables has been used by many organizations to visualize a variety of scientific data. One example is the California Redistricting Map created by the LA Times: http://goo.gl/gwZt5 The Pacific Institute and Circle of Blue have used Fusion Tables to map the quality of water around the world: http://goo.gl/T4SX8 The World Resources Institute mapped the threat level of coral reefs using Fusion Tables: http://goo.gl/cdqe8 What attendees will learn in this session: This session will cover all the steps necessary to use Fusion Tables to create a variety of interactive visualizations. Attendees will begin by learning about the various options for uploading data into Fusion Tables, including Shapefile, KML file, and CSV file import. Attendees will then learn how to use Fusion Tables to manage their data by merging it with other data and controlling the permissions of the data. Finally, the session will cover how to create a customized visualization from the data, and share that visualization with others using both Fusion Tables and the Google Maps API.

IMS/Satellite Situation Center report. Predicted orbit plots for Hawkeye 1, 1976

NASA Technical Reports Server (NTRS)

1975-01-01

The predicted orbit plots are shown in three projections. The time period covered by each set of projections is 2 days 1 hour, corresponding approximately to the period of Hawkeye 1. The three coordinate systems used are the Geocentric Solar Ecliptic system (GSE), the Geocentric Solar Magnetospheric system (GSM), and the Solar Magnetic system (SM). For each of the three projections, time ticks and codes are given on the satellite trajectories. The codes are interpreted in the table at the base of each plot. Time is given in the table as year/day/decimal hour. The total time covered by each plot is shown at the bottom of each table, and an additional variable is given in the table for each time tick. For the GSM and SM projection this variable is the geocentric distance to the satellite in earth radii, and for the GSE projection the variable is satellite ecliptic latitude in degrees.

SU-D-209-04: Raise Your Table: An Effective Way to Reduce Radiation Dose for Fluoroscopy

DOE Office of Scientific and Technical Information (OSTI.GOV)

Huo, D; Hoerner, M; Toskich, B

2016-06-15

Purpose: Patient table height plays an important role in estimating patient skin dose for interventional radiology (IR) procedures, because the patient’s skin location is dependent on the height of table. Variation in table height can lead to as much as 150% difference in skin dose for patient exams with similar air kerma meter readings. In our facility, IR procedural workflow was recently changed to require the IR physicians to confirm the patient table height before the procedure. The patient table height data was collected before and after this workflow change to validate the implementation of this practice. Methods: Table heightmore » information was analyzed for all procedures performed in three IR rooms, which were impacted by the workflow change, covering three months before and after the change (Aug 2015 to Jan 2016). In total, 442, 425, and 390 procedures were performed in these three rooms over this time period. There were no personnel or procedure assignment changes during the six-month period of time. Statistical analysis was performed for the average table height changes before and after the workflow change. Results: For the three IR rooms investigated, after the workflow change, the average table heights were increased by 1.43 cm (p=0.004084), 0.66 cm (p=0.187089), and 1.59 cm (p=0.002193), providing a corresponding estimated skin dose savings of 6.76%, 2.94% and 7.62%, respectively. After the workflow change, the average table height was increased by 0.95 cm, 0.63 cm, 0.55 cm, 1.07 cm, 1.12 cm, and 3.36 cm for the six physicians who routinely work in these three rooms. Conclusion: Consistent improvement in table height settings has been observed for all IR rooms and all physicians following a simple workflow change. This change has led to significant patient dose savings by making physicians aware of the pre-procedure table position.« less

Students' Perceptions about the Use of Educational Games as a Tool for Teaching the Periodic Table of Elements at the High School Level

ERIC Educational Resources Information Center

Franco-Mariscal, Antonio Joaquín; Oliva-Martínez, Jose´ María; Gil, M. L. Almoraima

2015-01-01

The study reported here was conducted to investigate the perceptions of high school students on the use of educational games as a tool for teaching the periodic table of elements in a chemistry class in Spain. The 127 students who participated in this study came from six different classes in grade 10 (15-16 years old). The students' perceptions of…

Evaluation of Augmented REality Sandtable (ARES) during Sand Table Construction

DTIC Science & Technology

2018-01-01

ARL-TR-8278 ● JAN 2018 US Army Research Laboratory Evaluation of Augmented REality Sandtable ( ARES ) during Sand Table...NOTICES Disclaimers The findings in this report are not to be construed as an official Department of the Army position unless so designated by...Evaluation of Augmented REality Sandtable ( ARES ) during Sand Table Construction by Kelly S Hale and Jennifer M Riley Design Interactive

Metal hydrides as electrode/catalyst materials for oxygen evolution/reduction in electrochemical devices

DOEpatents

Bugga, Ratnakumar V.; Halpert, Gerald; Fultz, Brent; Witham, Charles K.; Bowman, Robert C.; Hightower, Adrian

1997-01-01

An at least ternary metal alloy of the formula, AB.sub.(5-Y)X(.sub.y), is claimed. In this formula, A is selected from the rare earth elements, B is selected from the elements of groups 8, 9, and 10 of the periodic table of the elements, and X includes at least one of the following: antimony, arsenic, and bismuth. Ternary or higher-order substitutions, to the base AB.sub.5 alloys, that form strong kinetic interactions with the predominant metals in the base metal hydride are used to form metal alloys with high structural integrity after multiple cycles of hydrogen sorption.

Short-term response of methane fluxes and methanogen activity to water table and soil warming manipulations in an Alaskan peatland

Treesearch

M.R. Turetsky; C.C. Treat; M. Waldrop; J.M. Waddington; J.W. Harden; A.D. McGuire

2008-01-01

Growing season CH4 fluxes were monitored over a two year period following the start of ecosystem-scale manipulations of water table position and surface soil temperatures in a moderate rich fen in interior Alaska. The largest CH4 fluxes occurred in plots that received both flooding (raised water table position) and soil...

iTTVis: Interactive Visualization of Table Tennis Data.

PubMed

Wu, Yingcai; Lan, Ji; Shu, Xinhuan; Ji, Chenyang; Zhao, Kejian; Wang, Jiachen; Zhang, Hui

2018-01-01

The rapid development of information technology paved the way for the recording of fine-grained data, such as stroke techniques and stroke placements, during a table tennis match. This data recording creates opportunities to analyze and evaluate matches from new perspectives. Nevertheless, the increasingly complex data poses a significant challenge to make sense of and gain insights into. Analysts usually employ tedious and cumbersome methods which are limited to watching videos and reading statistical tables. However, existing sports visualization methods cannot be applied to visualizing table tennis competitions due to different competition rules and particular data attributes. In this work, we collaborate with data analysts to understand and characterize the sophisticated domain problem of analysis of table tennis data. We propose iTTVis, a novel interactive table tennis visualization system, which to our knowledge, is the first visual analysis system for analyzing and exploring table tennis data. iTTVis provides a holistic visualization of an entire match from three main perspectives, namely, time-oriented, statistical, and tactical analyses. The proposed system with several well-coordinated views not only supports correlation identification through statistics and pattern detection of tactics with a score timeline but also allows cross analysis to gain insights. Data analysts have obtained several new insights by using iTTVis. The effectiveness and usability of the proposed system are demonstrated with four case studies.

Technetium: The First Radioelement on the Periodic Table

DOE PAGES

Johnstone, Erik V.; Yates, Mary Anne; Poineau, Frederic; ...

2017-02-21

The radioactive nature of technetium is discussed using a combination of introductory nuclear physics concepts and empirical trends observed in the chart of the nuclides and the periodic table of the elements. Trends such as the enhanced stability of nucleon pairs, magic numbers, and Mattauch's rule are described. Here, the concepts of nuclear binding energies and the nuclear shell model are introduced and used to explain the relative stability of radionuclides and, in particular, the isotopes of technetium.

Progress on Oceanographic Tables and Standards 1983-1986: Work and Recommendations of the Unesco/SCOR/ICES/IAPSO Joint Panel. Unesco Technical Papers in Marine Science No. 50.

ERIC Educational Resources Information Center

United Nations Educational, Scientific, and Cultural Organization, Paris (France). Div. of Marine Sciences.

The present document covers activities carried out by and under the auspices of the Joint Panel on Oceanographic Tables and Standards (JPOTS) over the period of 1983-1986. The first part is the report of the Chairman of JPOTS on the activities of the Panel during the period 1983-1985. Two major topics were considered by the Panel: (1) the…

Separating Mass and Height Contributions in Gravity Variations at Medicina, Italy

NASA Astrophysics Data System (ADS)

Zerbini, S.; Bruni, S.; Errico, M.; Santi, E.; Wziontek, H.

2016-12-01

During 1996, at the Medicina station, a GPS and a superconducting gravimeter (SG) were installed in the framework of an experiment focused on the comparison between height and gravity variations. Absolute gravity observations are also performed twice a year and environmental parameters, among others water table levels, are recorded continuously. The station is also equipped with a second GPS system, the two antennas are very close to each other, and both are located in close proximity to the VLBI dish. Two decades of continuous height and gravity observations are now available which allow investigating both long and short period signals and the relevant correlations between the two measured quantities. Long period signatures are observed, a principal component is due to subsidence which is well known to occur in the area; however, also non-linear long-period behaviors are observed. Seasonal effects are also clearly recognizable in the time series and are mainly associated with the water table seasonal behavior. The station is characterized by clayey soil which is subject to consolidation effects when the water table lowers during the summer period. This effect is particularly recognizable in the SG data since the instrument is installed on a shallow foundation pillar which may suffer for height decreases in the order of 2,5-3 cm for water table lowering of 2 m.

Experimental Analysis of Propeller Interactions With a Flexible Wing Micro-Air-Vehicle

DTIC Science & Technology

2006-03-23

Wing (Freestream Only) Momentum Balance Results.............. 94 Table 10. Flexible/ Rigid Wing (Freestream and Propeller Running) Momentum Balance ...107 Table 18. Propeller/MAV Forces and Moments at 14,000 RPM ( Rigid Wing) ............ 107 Table 19. Balance Data (Raw and Corrected...velocity field around the vehicle. A limited number of tests have been performed to assess the technique in comparison to force balance data. 4

Periodic Contractions among the Elements. Or, on Being the Right Size.

ERIC Educational Resources Information Center

Mason, Joan

1988-01-01

Discusses the significance of periodicity and covalent atomic radius among the elements. Describes contraction across the row, expansion down the group, irregularities in the buildup of the periodic table and periodicities of physiochemical properties. (CW)

Groundwater-supported evapotranspiration within glaciated watersheds under conditions of climate change

NASA Astrophysics Data System (ADS)

Cohen, Denis; Person, Mark; Daannen, Ronnie; Locke, Sharon; Dahlstrom, Dave; Zabielski, Victor; Winter, Thomas C.; Rosenberry, Donald O.; Wright, Herb; Ito, Emi; Nieber, John L.; Gutowski, William J.

2006-04-01

This paper analyzes the effects of geology and geomorphology on surface-water/-groundwater interactions, evapotranspiration, and recharge under conditions of long-term climatic change. Our analysis uses hydrologic data from the glaciated Crow Wing watershed in central Minnesota, USA, combined with a hydrologic model of transient coupled unsaturated/saturated flow (HYDRAT2D). Analysis of historical water-table (1970-1993) and lake-level (1924-2002) records indicates that larger amplitude and longer period fluctuations occur within the upland portions of watersheds due to the response of the aquifer system to relatively short-term climatic fluctuations. Under drought conditions, lake and water-table levels fell by as much as 2-4 m in the uplands but by 1 m in the lowlands. The same pattern can be seen on millennial time scales. Analysis of Holocene lake-core records indicates that Moody Lake, located near the outlet of the Crow Wing watershed, fell by as much as 4 m between about 4400 and 7000 yr BP. During the same time, water levels in Lake Mina, located near the upland watershed divide, fell by about 15 m. Reconstructed Holocene climate as represented by HYDRAT2D gives somewhat larger drops (6 and 24 m for Moody Lake and Lake Mina, respectively). The discrepancy is probably due to the effect of three-dimensional flow. A sensitivity analysis was also carried out to study how aquifer hydraulic conductivity and land-surface topography can influence water-table fluctuations, wetlands formation, and evapotranspiration. The models were run by recycling a wet year (1985, 87 cm annual precipitation) over a 10-year period followed by 20 years of drier and warmer climate (1976, 38 cm precipitation). Model results indicated that groundwater-supported evapotranspiration accounted for as much as 12% (10 cm) of evapotranspiration. The aquifers of highest hydraulic conductivity had the least amount of groundwater-supported evapotranspiration owing to a deep water table. Recharge was even more sensitive to aquifer hydraulic conductivity, especially in the lowland regions. These findings have important implications for paleoclimatic studies, because the hydrologic response of a surface-water body will vary across the watershed to a given climate signal.

Dynamic factor analysis of groundwater quality trends in an agricultural area adjacent to Everglades National Park.

PubMed

Muñoz-Carpena, R; Ritter, A; Li, Y C

2005-11-01

The extensive eastern boundary of Everglades National Park (ENP) in south Florida (USA) is subject to one of the most expensive and ambitious environmental restoration projects in history. Understanding and predicting the water quality interactions between the shallow aquifer and surface water is a key component in meeting current environmental regulations and fine-tuning ENP wetland restoration while still maintaining flood protection for the adjacent developed areas. Dynamic factor analysis (DFA), a recent technique for the study of multivariate non-stationary time-series, was applied to study fluctuations in groundwater quality in the area. More than two years of hydrological and water quality time series (rainfall; water table depth; and soil, ground and surface water concentrations of N-NO3-, N-NH4+, P-PO4(3-), Total P, F-and Cl-) from a small agricultural watershed adjacent to the ENP were selected for the study. The unexplained variability required for determining the concentration of each chemical in the 16 wells was greatly reduced by including in the analysis some of the observed time series as explanatory variables (rainfall, water table depth, and soil and canal water chemical concentration). DFA results showed that groundwater concentration of three of the agrochemical species studied (N-NO3-, P-PO4(3-)and Total P) were affected by the same explanatory variables (water table depth, enriched topsoil, and occurrence of a leaching rainfall event, in order of decreasing relative importance). This indicates that leaching by rainfall is the main mechanism explaining concentration peaks in groundwater. In the case of N-NH4+, in addition to leaching, groundwater concentration is governed by lateral exchange with canals. F-and Cl- are mainly affected by periods of dilution by rainfall recharge, and by exchange with the canals. The unstructured nature of the common trends found suggests that these are related to the complex spatially and temporally varying land use patterns in the watershed. The results indicate that peak concentrations of agrochemicals in groundwater could be reduced by improving fertilization practices (by splitting and modifying timing of applications) and by operating the regional canal system to maintain the water table low, especially during the rainy periods.

Dynamic factor analysis of groundwater quality trends in an agricultural area adjacent to Everglades National Park

NASA Astrophysics Data System (ADS)

Muñoz-Carpena, R.; Ritter, A.; Li, Y. C.

2005-11-01

The extensive eastern boundary of Everglades National Park (ENP) in south Florida (USA) is subject to one of the most expensive and ambitious environmental restoration projects in history. Understanding and predicting the water quality interactions between the shallow aquifer and surface water is a key component in meeting current environmental regulations and fine-tuning ENP wetland restoration while still maintaining flood protection for the adjacent developed areas. Dynamic factor analysis (DFA), a recent technique for the study of multivariate non-stationary time-series, was applied to study fluctuations in groundwater quality in the area. More than two years of hydrological and water quality time series (rainfall; water table depth; and soil, ground and surface water concentrations of N-NO 3-, N-NH 4+, P-PO 43-, Total P, F -and Cl -) from a small agricultural watershed adjacent to the ENP were selected for the study. The unexplained variability required for determining the concentration of each chemical in the 16 wells was greatly reduced by including in the analysis some of the observed time series as explanatory variables (rainfall, water table depth, and soil and canal water chemical concentration). DFA results showed that groundwater concentration of three of the agrochemical species studied (N-NO 3-, P-PO 43-and Total P) were affected by the same explanatory variables (water table depth, enriched topsoil, and occurrence of a leaching rainfall event, in order of decreasing relative importance). This indicates that leaching by rainfall is the main mechanism explaining concentration peaks in groundwater. In the case of N-NH 4+, in addition to leaching, groundwater concentration is governed by lateral exchange with canals. F -and Cl - are mainly affected by periods of dilution by rainfall recharge, and by exchange with the canals. The unstructured nature of the common trends found suggests that these are related to the complex spatially and temporally varying land use patterns in the watershed. The results indicate that peak concentrations of agrochemicals in groundwater could be reduced by improving fertilization practices (by splitting and modifying timing of applications) and by operating the regional canal system to maintain the water table low, especially during the rainy periods.

Groundwater-supported evapotranspiration within glaciated watersheds under conditions of climate change

USGS Publications Warehouse

Cohen, D.; Person, M.; Daannen, R.; Locke, S.; Dahlstrom, D.; Zabielski, V.; Winter, T.C.; Rosenberry, D.O.; Wright, H.; Ito, E.; Nieber, J.L.; Gutowski, W.J.

2006-01-01

This paper analyzes the effects of geology and geomorphology on surface-water/-groundwater interactions, evapotranspiration, and recharge under conditions of long-term climatic change. Our analysis uses hydrologic data from the glaciated Crow Wing watershed in central Minnesota, USA, combined with a hydrologic model of transient coupled unsaturated/saturated flow (HYDRAT2D). Analysis of historical water-table (1970-1993) and lake-level (1924-2002) records indicates that larger amplitude and longer period fluctuations occur within the upland portions of watersheds due to the response of the aquifer system to relatively short-term climatic fluctuations. Under drought conditions, lake and water-table levels fell by as much as 2-4 m in the uplands but by 1 m in the lowlands. The same pattern can be seen on millennial time scales. Analysis of Holocene lake-core records indicates that Moody Lake, located near the outlet of the Crow Wing watershed, fell by as much as 4 m between about 4400 and 7000 yr BP. During the same time, water levels in Lake Mina, located near the upland watershed divide, fell by about 15 m. Reconstructed Holocene climate as represented by HYDRAT2D gives somewhat larger drops (6 and 24 m for Moody Lake and Lake Mina, respectively). The discrepancy is probably due to the effect of three-dimensional flow. A sensitivity analysis was also carried out to study how aquifer hydraulic conductivity and land-surface topography can influence water-table fluctuations, wetlands formation, and evapotranspiration. The models were run by recycling a wet year (1985, 87 cm annual precipitation) over a 10-year period followed by 20 years of drier and warmer climate (1976, 38 cm precipitation). Model results indicated that groundwater-supported evapotranspiration accounted for as much as 12% (10 cm) of evapotranspiration. The aquifers of highest hydraulic conductivity had the least amount of groundwater-supported evapotranspiration owing to a deep water table. Recharge was even more sensitive to aquifer hydraulic conductivity, especially in the lowland regions. These findings have important implications for paleoclimatic studies, because the hydrologic response of a surface-water body will vary across the watershed to a given climate signal. ?? 2005 Elsevier B.V. All rights reserved.

The Physiological Demands of Table Tennis: A Review

PubMed Central

Kondrič, Miran; Zagatto, Alessandro Moura; Sekulić, Damir

2013-01-01

Although table tennis has a tradition lasting more than 100 years, relatively little is known about players’ physiological requirements – especially during competition. In this review we discuss research studies that have led to our current understanding of how the body functions during table tennis training and competition and how this is altered by training. Match and practice analysis of the table tennis game indicates that during intense practice and competition it is predominantly the anaerobic alactic system that is called into play, while the endurance system is relied on to recovery the anaerobic stores used during such effort. It is thus important for coaches to keep in mind that, while the anaerobic alactic system is the most energetic system used during periods of exertion in a table tennis game, a strong capacity for endurance is what helps a player recover quicker for the following match and the next day of competition. This paper provides a review of specific studies that relate to competitive table tennis, and highlights the need for training and research programs tailored to table tennis. Key Points Match and practice analysis of the table tennis game indicates that during intense practice and competition it is predominantly the anaerobic alactic system that is called into play. The endurance system is relied on to recovery the anaerobic stores used during hard practice and competition effort. It is important for coaches to keep in mind that, while the anaerobic alactic system is the most energetic system used during periods of exertion in a table tennis game, a strong capacity for endurance is what helps a player recover quicker for the following match and the next day of competition. PMID:24149139

Modelling of seasonal dynamics of Wetland-Groundwater flow interaction in the Canadian Prairies

NASA Astrophysics Data System (ADS)

Ali, Melkamu; Nussbaumer, Raphaël; Ireson, Andrew; Keim, Dawn

2015-04-01

Wetland-shallow groundwater interaction is studied at the St. Denis National Wildlife Area in Saskatchewan, Canada, located within the northern glaciated prairies of North America. Ponds in the Canadian Prairies are intermittently connected by fill-spill processes in the spring and growing season of some wetter years. The contribution of the ponds and wetlands to groundwater is still a significant research challenge. The objective of this study is to evaluate model's ability to reproduce observed effects of groundwater-wetland interactions including seasonal pattern of shallow groundwater table, intended flow direction and to quantify the depression induced infiltration from the wetland to the surrounding uplands. The integrated surface-wetland-shallow groundwater processes and the changes in land-energy and water balances caused by the flow interaction are simulated using ParFlow-CLM at a small watershed of 1km2 containing both permanent and seasonal wetland complexes. We compare simulated water table depth with piezometers reading monitored by level loggers at the watershed. We also present the strengths and limitations of the model in reproducing observed behaviour of the groundwater table response to the spring snowmelt and summer rainfall. Simulations indicate that the shallow water table at the uphill recovers quickly after major rainfall events in early summer that generates lateral flow to the pond. In late summer, the wetland supplies water to the surrounding upland when the evapotranspiration is higher than the precipitation in which more water from the root zone is up taken by plants. Results also show that Parflow-CLM is able to reasonably simulate the water table patterns response to summer rainfall, while it is insufficient to reproduce the spring snowmelt infiltration which is the most dominant hydrological process in the Prairies.

Indexing of Popular Periodicals: The State of the Art

ERIC Educational Resources Information Center

Aveney, Brian; Slade, Rod

1978-01-01

Nine indexing services of popular periodicals are discussed in terms of content, coverage, and characteristics: Access, Consumers Index, Index to Free Periodicals, New York Times Information Bank, Magazine Index, Monthly Periodicals Index, New Periodicals Index, Popular Periodical Index, and Readers Guide. A table indicates coverage for each index…

An analytical study on nested flow systems in a Tóthian basin with a periodically changing water table

NASA Astrophysics Data System (ADS)

Zhao, Ke-Yu; Jiang, Xiao-Wei; Wang, Xu-Sheng; Wan, Li; Wang, Jun-Zhi; Wang, Heng; Li, Hailong

2018-01-01

Classical understanding on basin-scale groundwater flow patterns is based on Tóth's findings of a single flow system in a unit basin (Tóth, 1962) and nested flow systems in a complex basin (Tóth, 1963), both of which were based on steady state models. Vandenberg (1980) extended Tóth (1962) by deriving a transient solution under a periodically changing water table in a unit basin and examined the flow field distortion under different dimensionless response time, τ∗. Following Vandenberg's (1980) approach, we extended Tóth (1963) by deriving the transient solution under a periodically changing water table in a complex basin and examined the transient behavior of nested flow systems. Due to the effect of specific storage, the flow field is asymmetric with respect to the midline, and the trajectory of internal stagnation points constitutes a non-enclosed loop, whose width decreases when τ∗ decreases. The distribution of the relative magnitude of hydraulic head fluctuation, Δh∗ , is dependent on the horizontal distance away from a divide and the depth below the land surface. In the shallow part, Δh∗ decreases from 1 at the divide to 0 at its neighboring valley under all τ∗, while in the deep part, Δh∗ reaches a threshold, whose value decreases when τ∗ increases. The zones with flowing wells are also found to change periodically. As water table falls, there is a general trend of shrinkage in the area of zones with flowing wells, which has a lag to the declining water table under a large τ∗. Although fluxes have not been assigned in our model, the recharge/discharge flux across the top boundary can be obtained. This study is critical to understand a series of periodically changing hydrogeological phenomena in large-scale basins.

75 FR 34515 - American Energy Services, Inc., Dynacore Patent Litigation Trust, Earth Sciences, Inc., Empiric...

Federal Register 2010, 2011, 2012, 2013, 2014

2010-06-17

... Group Holdings, Inc. (f/k/a Leasing Solutions, Inc. and Le Bon Table Brand Foods Corp.), Reliance... Solutions, Inc. and Le Bon Table Brand Foods Corp.) because it has not filed any periodic reports since the...

WASP (Write a Scientific Paper) using Excel - 2: Pivot tables.

PubMed

Grech, Victor

2018-02-01

Data analysis at the descriptive stage and the eventual presentation of results requires the tabulation and summarisation of data. This exercise should always precede inferential statistics. Pivot tables and pivot charts are one of Excel's most powerful and underutilised features, with tabulation functions that immensely facilitate descriptive statistics. Pivot tables permit users to dynamically summarise and cross-tabulate data, create tables in several dimensions, offer a range of summary statistics and can be modified interactively with instant outputs. Large and detailed datasets are thereby easily manipulated making pivot tables arguably the best way to explore, summarise and present data from many different angles. This second paper in the WASP series in Early Human Development provides pointers for pivot table manipulation in Excel™. Copyright © 2018 Elsevier B.V. All rights reserved.

TableViewer for Herschel Data Processing

NASA Astrophysics Data System (ADS)

Zhang, L.; Schulz, B.

2006-07-01

The TableViewer utility is a GUI tool written in Java to support interactive data processing and analysis for the Herschel Space Observatory (Pilbratt et al. 2001). The idea was inherited from a prototype written in IDL (Schulz et al. 2005). It allows to graphically view and analyze tabular data organized in columns with equal numbers of rows. It can be run either as a standalone application, where data access is restricted to FITS (FITS 1999) files only, or it can be run from the Quick Look Analysis(QLA) or Interactive Analysis(IA) command line, from where also objects are accessible. The graphic display is very versatile, allowing plots in either linear or log scales. Zooming, panning, and changing data columns is performed rapidly using a group of navigation buttons. Selecting and de-selecting of fields of data points controls the input to simple analysis tasks like building a statistics table, or generating power spectra. The binary data stored in a TableDataset^1, a Product or in FITS files can also be displayed as tabular data, where values in individual cells can be modified. TableViewer provides several processing utilities which, besides calculation of statistics either for all channels or for selected channels, and calculation of power spectra, allows to convert/repair datasets by changing the unit name of data columns, and by modifying data values in columns with a simple calculator tool. Interactively selected data can be separated out, and modified data sets can be saved to FITS files. The tool will be very helpful especially in the early phases of Herschel data analysis when a quick access to contents of data products is important. TableDataset and Product are Java classes defined in herschel.ia.dataset.

Periodic Table of Elements: Los Alamos National Laboratory

Science.gov Websites

, Communication Specialist talks about the Periodic Table of Elements 7/17/17 Back to Elements List Fermium is process, but the identification of Pu-244 raised the possibility that still more neutrons could have been discovery of the new elements, and the new data on neutron capture, was kept secret on the orders of the U.S

Sixty Symbols, by The University of Nottingham

NASA Astrophysics Data System (ADS)

MacIsaac, Dan

2009-11-01

Faculty at the University of Nottingham are continuing to develop short (5-10 minutes long) insightful video-streamed vignettes for the web. Their earlier sites: Test Tube: Behind the World of Science and the widely known Periodic Table of Videos (a video on each element in the periodic table featured in WebSights last semester) have been joined by a new effort from the faculty of Physics, Astronomy and Engineering-Sixty Symbols: Videos about the Symbols of Physics and Astronomy. I liked the vignette on chi myself.

Fluid-Structure Interaction of Channel Driven Cavity Flow

DTIC Science & Technology

2016-06-01

3 32 ") thick neoprene rubber sheet. The sheet was bonded to the acrylic using 3M Scotch- Weld Neoprene High Performance Rubber and Gasket Adhesive...TABLES Table 1. Natural Frequencies of the 0.5 mm (0.02”) Thick Aluminum Plate ..........19 Table 2. Mean Normalized Strains...1300. A bead of 100% silicone was applied on the bond to prevent water from infiltrating the adhesive. The 3M Scotch- Weld 1300 adhesive kept the

Attention to Language: Lessons Learned at the Dinner Table.

ERIC Educational Resources Information Center

Ely, Richard; Gleason, Jean Berko; MacGibbon, Ann; Zaretsky, Elena

2001-01-01

Studied the dinner table conversations of 22 families with young children. Analyzed utterances for language-focused terms. Reported that metalinguistic uses exceeded pragmatic uses. Found that during routine social interactions, parents provide children with potentially important information about the communicative functions of language.…

IMS/Satellite Situation Center report. Predicted orbit plots for IMP-H-1976. [Explorer 47 satellite

NASA Technical Reports Server (NTRS)

1975-01-01

Predicted orbit plots are shown in three projections. The time period covered by each set of projections is 12 days 6 hours, corresponding approximately to the period of IMP-H satellite. The three coordinate systems used are the Geocentric Solar Ecliptic system (GSE), the Geocentric Solar Magnetospheric system (GSM), and the Solar Magnetic system (SM). For each of the three projections, time ticks and codes are given on the satellite trajectories. The codes are interpreted in the table at the base of each plot. Time is given in the table as year/day/decimal hour. The total time covered by each plot is shown at the bottom of each table. An additional variable is given in the table for each time tick. For the GSM and SM projection this variable is the geocentric distance to the satellite in earth radii, and for the GSE projection the variable is satellite ecliptic latitude in degrees.

Paper Tools and Periodic Tables: Newlands and Mendeleev Draw Grids.

PubMed

Gordin, Michael D

2018-02-01

This essay elaborates on Ursula Klein's methodological concept of "paper tools" by drawing on several examples from the history of the periodic table. Moving from John A. R. Newlands's "Law of Octaves," to Dmitrii Mendeleev's first drafts of his periodic system in 1869, to Mendeleev's chemical speculations on the place of the ether within his classification, one sees that the ways in which the scientists presented the balance between empirical data and theoretical manipulation proved crucial for the chemical community's acceptance or rejection of their proposed innovations. This negotiated balance illustrates an underemphasised feature of Klein's conceptualisation of the ways in which a paper tool generates new knowledge.

Patterns in coupled water and energy cycle: Modeling, synthesis with observations, and assessing the subsurface-landsurface interactions

NASA Astrophysics Data System (ADS)

Rahman, A.; Kollet, S. J.; Sulis, M.

2013-12-01

In the terrestrial hydrological cycle, the atmosphere and the free groundwater table act as the upper and lower boundary condition, respectively, in the non-linear two-way exchange of mass and energy across the land surface. Identifying and quantifying the interactions among various atmospheric-subsurface-landsurface processes is complicated due to the diverse spatiotemporal scales associated with these processes. In this study, the coupled subsurface-landsurface model ParFlow.CLM was applied over a ~28,000 km2 model domain encompassing the Rur catchment, Germany, to simulate the fluxes of the coupled water and energy cycle. The model was forced by hourly atmospheric data from the COSMO-DE model (numerical weather prediction system of the German Weather Service) over one year. Following a spinup period, the model results were synthesized with observed river discharge, soil moisture, groundwater table depth, temperature, and landsurface energy flux data at different sites in the Rur catchment. It was shown that the model is able to reproduce reasonably the dynamics and also absolute values in observed fluxes and state variables without calibration. The spatiotemporal patterns in simulated water and energy fluxes as well as the interactions were studied using statistical, geostatistical and wavelet transform methods. While spatial patterns in the mass and energy fluxes can be predicted from atmospheric forcing and power law scaling in the transition and winter months, it appears that, in the summer months, the spatial patterns are determined by the spatially correlated variability in groundwater table depth. Continuous wavelet transform techniques were applied to study the variability of the catchment average mass and energy fluxes at varying time scales. From this analysis, the time scales associated with significant interactions among different mass and energy balance components were identified. The memory of precipitation variability in subsurface hydrodynamics acts at the 20-30 day time scale, while the groundwater contribution to sustain the long-term variability patterns in evapotranspiration acts at the 40-60 day scale. Diurnal patterns in connection with subsurface hydrodynamics were also detected. Thus, it appears that the subsurface hydrodynamics respond to the temporal patterns in land surface fluxes due to the variability in atmospheric forcing across multiple space and time scales.

VeriClick: an efficient tool for table format verification

NASA Astrophysics Data System (ADS)

Nagy, George; Tamhankar, Mangesh

2012-01-01

The essential layout attributes of a visual table can be defined by the location of four critical grid cells. Although these critical cells can often be located by automated analysis, some means of human interaction is necessary for correcting residual errors. VeriClick is a macro-enabled spreadsheet interface that provides ground-truthing, confirmation, correction, and verification functions for CSV tables. All user actions are logged. Experimental results of seven subjects on one hundred tables suggest that VeriClick can provide a ten- to twenty-fold speedup over performing the same functions with standard spreadsheet editing commands.

Examining the spatial and temporal variation of groundwater inflows to a valley-to-floodplain river using 222Rn, geochemistry and river discharge: the Ovens River, southeast Australia

NASA Astrophysics Data System (ADS)

Yu, M. C. L.; Cartwright, I.; Braden, J. L.; de Bree, S. T.

2013-12-01

Radon (222Rn) and major ion geochemistry were used to define and quantify the catchment-scale groundwater-surface water interactions along the Ovens River in the southeast Murray-Darling Basin, Victoria, Australia, between September 2009 and October 2011. The Ovens River is characterized by the transition from a single channel within a mountain valley in the upper catchment to a multi-channel meandering river on flat alluvial plains in the lower catchment. Overall, the Ovens River is dominated by gaining reaches, receiving groundwater from both alluvial and basement aquifers. The distribution of gaining and losing reaches is governed by catchment morphology and lithology. In the upper catchment, rapid groundwater recharge through the permeable aquifers increases the water table. The rising water table, referred to as hydraulic loading, increases the hydraulic head gradient toward the river and hence causes high baseflow to the river during wet (high flow) periods. In the lower catchment, lower rainfall and finer-gained sediments reduce the magnitude and variability of hydraulic gradient between the aquifer and the river, producing lower but more constant groundwater inflows. The water table in the lower reaches has a shallow gradient, and small changes in river height or groundwater level can result in fluctuating gaining and losing behaviour. The middle catchment represents a transition in river-aquifer interactions from the upper to the lower catchment. High baseflow in some parts of the middle and lower catchments is caused by groundwater flowing over basement highs. Mass balance calculations based on 222Rn activities indicate that groundwater inflows are 2 to 17% of total flow with higher inflows occurring during high flow periods. In comparison to 222Rn activities, estimates of groundwater inflows from Cl concentrations are higher by up to 2000% in the upper and middle catchment but lower by 50 to 100% in the lower catchment. The high baseflow estimates using Cl concentrations may be due to the lack of sufficient difference between groundwater and surface water Cl concentrations. Both hydrograph separation and differential flow gauging yield far higher baseflow fluxes than 222Rn activities and Cl concentrations, probably indicating the input of other sources to the river in additional to regional groundwater, such as bank return flows.

The effects of snow and salt on ice table stability in University Valley, Antarctica

USGS Publications Warehouse

Williams, Kaj; Heldmann, Jennifer L.; McKay, Christopher P.; Mellon, Michael T.

2018-01-01

The Antarctic Dry Valleys represent a unique environment where it is possible to study dry permafrost overlaying an ice-rich permafrost. In this paper, two opposing mechanisms for ice table stability in University Valley are addressed: i) diffusive recharge via thin seasonal snow deposits and ii) desiccation via salt deposits in the upper soil column. A high-resolution time-marching soil and snow model was constructed and applied to University Valley, driven by meteorological station atmospheric measurements. It was found that periodic thin surficial snow deposits (observed in University Valley) are capable of drastically slowing (if not completely eliminating) the underlying ice table ablation. The effects of NaCl, CaCl2 and perchlorate deposits were then modelled. Unlike the snow cover, however, the presence of salt in the soil surface (but no periodic snow) results in a slight increase in the ice table recession rate, due to the hygroscopic effects of salt sequestering vapour from the ice table below. Near-surface pore ice frequently forms when large amounts of salt are present in the soil due to the suppression of the saturation vapour pressure. Implications for Mars high latitudes are discussed.

Yeast-2-Hybrid data file showing progranulin interactions in human fetal brain and bone marrow libraries.

PubMed

Tegeder, Irmgard

2016-12-01

Progranulin deficiency in humans is associated with neurodegeneration. Its mechanisms are not yet fully understood. We performed a Yeast-2-Hybrid screen using human full-length progranulin as bait to assess the interactions of progranulin. Progranulin was screened against human fetal brain and human bone marrow libraries using the standard Matchmaker technology (Clontech). This article contains the full Y2H data table, including blast results and sequences, a sorted table according to selection criteria for likely positive, putatively positive, likely false and false preys, and tables showing the gene ontology terms associated with the likely and putative preys of the brain and bone marrow libraries. The interactions with autophagy proteins were confirmed and functionally analyzed in "Progranulin overexpression in sensory neurons attenuates neuropathic pain in mice: Role of autophagy" (C. Altmann, S. Hardt, C. Fischer, J. Heidler, H.Y. Lim, A. Haussler, B. Albuquerque, B. Zimmer, C. Moser, C. Behrends, F. Koentgen, I. Wittig, M.H. Schmidt, A.M. Clement, T. Deller, I. Tegeder, 2016) [1].

78 FR 78985 - Agency Information Collection Activities: Proposed Collection; Comment Request

Federal Register 2010, 2011, 2012, 2013, 2014

2013-12-27

...) will publish periodic summaries of proposed projects. To request more information on the proposed... the effects and accomplishments of SAMHSA programs. The following table is an estimated annual... transaction \\1\\ This table represents the maximum additional burden if adult respondents for ATR provide...

Accounting for intracell flow in models with emphasis on water table recharge and stream-aquifer interaction: 1. Problems and concepts

USGS Publications Warehouse

Jorgensen, Donald G.; Signor, Donald C.; Imes, Jeffrey L.

1989-01-01

Intracell flow is important in modeling cells that contain both sources and sinks. Special attention is needed if recharge through the water table is a source. One method of modeling multiple sources and sinks is to determine the net recharge per cell. For example, for a model cell containing both a sink and recharge through the water table, the amount of recharge should be reduced by the ratio of the area of influence of the sink within the cell to the area of the cell. The reduction is the intercepted portion of the recharge. In a multilayer model this amount is further reduced by a proportion factor, which is a function of the depth of the flow lines from the water table boundary to the internal sink. A gaining section of a stream is a typical sink. The aquifer contribution to a gaining stream can be conceptualized as having two parts; the first part is the intercepted lateral flow from the water table and the second is the flow across the streambed due to differences in head between the water level in the stream and the aquifer below. The amount intercepted is a function of the geometry of the cell, but the amount due to difference in head across the stream bed is largely independent of cell geometry. A discharging well can intercept recharge through the water table within a model cell. The net recharge to the cell would be reduced in proportion to the area of influence of the well within the cell. The area of influence generally changes with time. Thus the amount of intercepted recharge and net recharge may not be constant with time. During periods when the well is not discharging there will be no intercepted recharge even though the area of influence from previous pumping may still exist. The reduction of net recharge per cell due to internal interception of flow will result in a model-calculated mass balance less than the prototype. Additionally the “effective transmissivity” along the intercell flow paths may be altered when flow paths are occupied by intercepted recharge.

The elements of life and medicines

PubMed Central

Chellan, Prinessa; Sadler, Peter J

2015-01-01

Which elements are essential for human life? Here we make an element-by-element journey through the periodic table and attempt to assess whether elements are essential or not, and if they are, whether there is a relevant code for them in the human genome. There are many difficulties such as the human biochemistry of several so-called essential elements is not well understood, and it is not clear how we should classify elements that are involved in the destruction of invading microorganisms, or elements which are essential for microorganisms with which we live in symbiosis. In general, genes do not code for the elements themselves, but for specific chemical species, i.e. for the element, its oxidation state, type and number of coordinated ligands, and the coordination geometry. Today, the biological periodic table is in a position somewhat similar to Mendeleev's chemical periodic table of 1869: there are gaps and we need to do more research to fill them. The periodic table also offers potential for novel therapeutic and diagnostic agents, based on not only essential elements, but also non-essential elements, and on radionuclides. Although the potential for inorganic chemistry in medicine was realized more than 2000 years ago, this area of research is still in its infancy. Future advances in the design of inorganic drugs require more knowledge of their mechanism of action, including target sites and metabolism. Temporal speciation of elements in their biological environments at the atomic level is a major challenge, for which new methods are urgently needed. PMID:25666066

The elements of life and medicines.

PubMed

Chellan, Prinessa; Sadler, Peter J

2015-03-13

Which elements are essential for human life? Here we make an element-by-element journey through the periodic table and attempt to assess whether elements are essential or not, and if they are, whether there is a relevant code for them in the human genome. There are many difficulties such as the human biochemistry of several so-called essential elements is not well understood, and it is not clear how we should classify elements that are involved in the destruction of invading microorganisms, or elements which are essential for microorganisms with which we live in symbiosis. In general, genes do not code for the elements themselves, but for specific chemical species, i.e. for the element, its oxidation state, type and number of coordinated ligands, and the coordination geometry. Today, the biological periodic table is in a position somewhat similar to Mendeleev's chemical periodic table of 1869: there are gaps and we need to do more research to fill them. The periodic table also offers potential for novel therapeutic and diagnostic agents, based on not only essential elements, but also non-essential elements, and on radionuclides. Although the potential for inorganic chemistry in medicine was realized more than 2000 years ago, this area of research is still in its infancy. Future advances in the design of inorganic drugs require more knowledge of their mechanism of action, including target sites and metabolism. Temporal speciation of elements in their biological environments at the atomic level is a major challenge, for which new methods are urgently needed.

Influence of Game Evolution and the Phase of Competition on Temporal Game Structure in High-Level Table Tennis Tournaments.

PubMed

Leite, Jorge Vieira de Mello; Barbieri, Fabio Augusto; Miyagi, Willian; Malta, Elvis de Souza; Zagatto, Alessandro Moura

2017-01-01

The aims of this study were: a) to investigate the game temporal structure in high-level table tennis competitions; b) to verify the influence of game evolution in international competitions from 2009 to 2012 (World Table Tennis Championships and the Olympic Games) on game temporal structure; c) to compare game temporal structure according to the phase of competition. Comparisons between the three international tournaments demonstrated that rally duration decreased significantly (p < 0.05) during the analyzed period (2009-2012), while the rest time increased (p < 0.05) from 2009 to 2011, but decreased (p < 0.05) from 2011 to 2012. In the competition phase analysis, it was found that rally duration decreased (p < 0.05) in the quarterfinals in relation to the semifinals and finals, while the rest time increased (p < 0.05) from the quarterfinals to semifinals and finals. Based on our findings and previous literature, we concluded that the performance level, game evolution and the competition phase influenced the game temporal structure of table tennis, considering longer rest periods adopted by elite athletes in relation to non-elite athletes, the reduction in rally duration and an increase in rest time over the 2009-2012 period and through the competition phases (quarterfinals to finals).

Incorporating water table dynamics in climate modeling: 1. Water table observations and equilibrium water table simulations

NASA Astrophysics Data System (ADS)

Fan, Ying; Miguez-Macho, Gonzalo; Weaver, Christopher P.; Walko, Robert; Robock, Alan

2007-05-01

Soil moisture is a key participant in land-atmosphere interactions and an important determinant of terrestrial climate. In regions where the water table is shallow, soil moisture is coupled to the water table. This paper is the first of a two-part study to quantify this coupling and explore its implications in the context of climate modeling. We examine the observed water table depth in the lower 48 states of the United States in search of salient spatial and temporal features that are relevant to climate dynamics. As a means to interpolate and synthesize the scattered observations, we use a simple two-dimensional groundwater flow model to construct an equilibrium water table as a result of long-term climatic and geologic forcing. Model simulations suggest that the water table depth exhibits spatial organization at watershed, regional, and continental scales, which may have implications for the spatial organization of soil moisture at similar scales. The observations suggest that water table depth varies at diurnal, event, seasonal, and interannual scales, which may have implications for soil moisture memory at these scales.

LGM-30B, Stage II Dissected Motors Test Report,

DTIC Science & Technology

1980-07-01

Relaxation Test Data (Outer Propellant) 29 Table 9, Stress Relaxation Test Data (Inner Propellant) 31 Table 10 , Cohesive Tear Energy Test Data (Outer...Outer) 45 7 Maximum Stress (Inner) 46 8Strain at Rupture (Inner) 47 9 Modulus (Inner) 48 Regression Plot, Low Rate Tensile 10 Maximum Stress (Outer...outer propellants are almost the same. H. TEAR ENERGY TEST: Data from this test period are contained in Tables 10 and 11. Sufficient valid data became

Winning the game: brain processes in expert, young elite and amateur table tennis players.

PubMed

Wolf, Sebastian; Brölz, Ellen; Scholz, David; Ramos-Murguialday, Ander; Keune, Philipp M; Hautzinger, Martin; Birbaumer, Niels; Strehl, Ute

2014-01-01

(1) compared with amateurs and young elite, expert table tennis players are characterized by enhanced cortical activation in the motor and fronto-parietal cortex during motor imagery in response to table tennis videos; (2) in elite athletes, world rank points are associated with stronger cortical activation. To this aim, electroencephalographic data were recorded in 14 expert, 15 amateur and 15 young elite right-handed table tennis players. All subjects watched videos of a serve and imagined themselves responding with a specific table tennis stroke. With reference to a baseline period, power decrease/increase of the sensorimotor rhythm (SMR) during the pretask- and task period indexed the cortical activation/deactivation (event-related desynchronization/synchronization, ERD/ERS). Regarding hypothesis (1), 8-10 Hz SMR ERD was stronger in elite athletes than in amateurs with an intermediate ERD in young elite athletes in the motor cortex. Regarding hypothesis (2), there was no correlation between ERD/ERS in the motor cortex and world rank points in elite experts, but a weaker ERD in the fronto-parietal cortex was associated with higher world rank points. These results suggest that motor skill in table tennis is associated with focused excitability of the motor cortex during reaction, movement planning and execution with high attentional demands. Among elite experts, less activation of the fronto-parietal attention network may be necessary to become a world champion.

Anomalous van der Waals-Casimir interactions on graphene: A concerted effect of temperature, retardation, and non-locality

NASA Astrophysics Data System (ADS)

Ambrosetti, Alberto; Silvestrelli, Pier Luigi

2018-04-01

Dispersion forces play a major role in graphene, largely influencing adhesion of adsorbate moieties and stabilization of functional multilayered structures. However, the reliable prediction of dispersion interactions on graphene up to the relevant ˜10 nm scale is an extremely challenging task: in fact, electromagnetic retardation effects and the highly non-local character of π electrons can imply sizeable qualitative variations of the interaction with respect to known pairwise approaches. Here we address both issues, determining the finite-temperature van der Waals (vdW)-Casimir interaction for point-like and extended adsorbates on graphene, explicitly accounting for the non-local dielectric permittivity. We find that temperature, retardation, and non-locality play a crucial role in determining the actual vdW scaling laws and the stability of both atomic and larger molecular adsorbates. Our results highlight the importance of these effects for a proper description of systems of current high interest, such as graphene interacting with biomolecules, and self-assembly of complex nanoscale structures. Due to the generality of our approach and the observed non-locality of other 2D materials, our results suggest non-trivial vdW interactions from hexagonal mono-layered materials from group 14 of the periodic table, to transition metal dichalcogenides.

Anomalous van der Waals-Casimir interactions on graphene: A concerted effect of temperature, retardation, and non-locality.

PubMed

Ambrosetti, Alberto; Silvestrelli, Pier Luigi

2018-04-07

Dispersion forces play a major role in graphene, largely influencing adhesion of adsorbate moieties and stabilization of functional multilayered structures. However, the reliable prediction of dispersion interactions on graphene up to the relevant ∼10 nm scale is an extremely challenging task: in fact, electromagnetic retardation effects and the highly non-local character of π electrons can imply sizeable qualitative variations of the interaction with respect to known pairwise approaches. Here we address both issues, determining the finite-temperature van der Waals (vdW)-Casimir interaction for point-like and extended adsorbates on graphene, explicitly accounting for the non-local dielectric permittivity. We find that temperature, retardation, and non-locality play a crucial role in determining the actual vdW scaling laws and the stability of both atomic and larger molecular adsorbates. Our results highlight the importance of these effects for a proper description of systems of current high interest, such as graphene interacting with biomolecules, and self-assembly of complex nanoscale structures. Due to the generality of our approach and the observed non-locality of other 2D materials, our results suggest non-trivial vdW interactions from hexagonal mono-layered materials from group 14 of the periodic table, to transition metal dichalcogenides.

Seamless 3D interaction for virtual tables, projection planes, and CAVEs

NASA Astrophysics Data System (ADS)

Encarnacao, L. M.; Bimber, Oliver; Schmalstieg, Dieter; Barton, Robert J., III

2000-08-01

The Virtual Table presents stereoscopic graphics to a user in a workbench-like setting. This device shares with other large- screen display technologies (such as data walls and surround- screen projection systems) the lack of human-centered unencumbered user interfaces and 3D interaction technologies. Such shortcomings present severe limitations to the application of virtual reality (VR) technology to time- critical applications as well as employment scenarios that involve heterogeneous groups of end-users without high levels of computer familiarity and expertise. Traditionally such employment scenarios are common in planning-related application areas such as mission rehearsal and command and control. For these applications, a high grade of flexibility with respect to the system requirements (display and I/O devices) as well as to the ability to seamlessly and intuitively switch between different interaction modalities and interaction are sought. Conventional VR techniques may be insufficient to meet this challenge. This paper presents novel approaches for human-centered interfaces to Virtual Environments focusing on the Virtual Table visual input device. It introduces new paradigms for 3D interaction in virtual environments (VE) for a variety of application areas based on pen-and-clipboard, mirror-in-hand, and magic-lens metaphors, and introduces new concepts for combining VR and augmented reality (AR) techniques. It finally describes approaches toward hybrid and distributed multi-user interaction environments and concludes by hypothesizing on possible use cases for defense applications.

Tabulation as a high-resolution alternative to coarse-graining protein interactions: Initial application to virus capsid subunits

NASA Astrophysics Data System (ADS)

Spiriti, Justin; Zuckerman, Daniel M.

2015-12-01

Traditional coarse-graining based on a reduced number of interaction sites often entails a significant sacrifice of chemical accuracy. As an alternative, we present a method for simulating large systems composed of interacting macromolecules using an energy tabulation strategy previously devised for small rigid molecules or molecular fragments [S. Lettieri and D. M. Zuckerman, J. Comput. Chem. 33, 268-275 (2012); J. Spiriti and D. M. Zuckerman, J. Chem. Theory Comput. 10, 5161-5177 (2014)]. We treat proteins as rigid and construct distance and orientation-dependent tables of the interaction energy between them. Arbitrarily detailed interactions may be incorporated into the tables, but as a proof-of-principle, we tabulate a simple α-carbon Gō-like model for interactions between dimeric subunits of the hepatitis B viral capsid. This model is significantly more structurally realistic than previous models used in capsid assembly studies. We are able to increase the speed of Monte Carlo simulations by a factor of up to 6700 compared to simulations without tables, with only minimal further loss in accuracy. To obtain further enhancement of sampling, we combine tabulation with the weighted ensemble (WE) method, in which multiple parallel simulations are occasionally replicated or pruned in order to sample targeted regions of a reaction coordinate space. In the initial study reported here, WE is able to yield pathways of the final ˜25% of the assembly process.

The most enjoyable way to learn the periodic table

NASA Astrophysics Data System (ADS)

Gümüşsoy, Verim; Kaya, Mustafa

2017-04-01

Constructivist learning allows students to be actively involved in the learning process and thus the learning to be permanent. It makes the lesson more interesting and enjoyable compared to classical learning where students are passive and get bored quickly. When students engage in activities during the learning process, they enjoy it more. And there is no doubt that games help this a lot. In this project, a game has been designed to make it more entertaining to learn the periodical table for the students. In this game, a huge periodical table (with empty columns) is drawn with acrylic paint in the school yard. Acrylic paint is preferred because it is resilient to outdoor conditions, quick drying and relatively durable. Besides its functionality in the game, the presence of the huge periodical table in the yard boosts students' motivation for scientific activities. Students are taught about the periodical table in their Chemistry lesson a week before the game is to be played. They are informed about the game and asked to bring some sportswear to wear during the game. On the game day, the class is divided into teams of five people. Each team wears a different color vest and is called by the color of the vest they are wearing. The starting point is drawn as far as possible from the periodical table. Furthermore, some question cards that cover the subject are used in the game. As an example from the game: one student from each team is asked to find the correct place by the atomic number of a certain element as described in the cards given to them. There is a time limit so the stopwatch is started as each student starts reading the information on the card. The student runs to the correct place of the certain element according to the clues on their given card. Then they stop and raise their hands. The teacher stops the stopwatch for that student. The teams gain points according to their speed and correct guesses. The game continues as other students are given different question cards and asked to follow same directions. In the end, the winning team is awarded. The game contains both short term goals, like allowing students to acquire the aimed learning outcome in a permanent way while having fun, and long term goals, like increasing the motivation toward the lesson and school and gaining team awareness.

National Centers for Environmental Prediction

Science.gov Websites

Reference List Table of Contents NCEP OPERATIONAL MODEL FORECAST GRAPHICS PARALLEL/EXPERIMENTAL MODEL Developmental Air Quality Forecasts and Verification Back to Table of Contents 2. PARALLEL/EXPERIMENTAL GRAPHICS VERIFICATION (GRID VS.OBS) WEB PAGE (NCEP EXPERIMENTAL PAGE, INTERNAL USE ONLY) Interactive web page tool for

46 CFR 61.05-15 - Boiler mountings and attachments.

Code of Federal Regulations, 2010 CFR

2010-10-01

...-15 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) MARINE ENGINEERING PERIODIC...) Each valve shall be opened and examined by the marine inspector at the interval specified in Table 61... the boiler and be examined by the marine inspector at the interval specified by Table 61.05-10 when...

46 CFR 169.247 - Firefighting equipment.

Code of Federal Regulations, 2011 CFR

2011-10-01

... certification and periodic inspection and at such other times as considered necessary all fire-extinguishing... condition of the equipment. The inspector verifies that the tests and inspections required in Tables 169.247.... Table 169.247(a)(1)—Portable Extinguishers Type unit Test Foam Discharge. Clean hose and inside of...

46 CFR 61.05-15 - Boiler mountings and attachments.

Code of Federal Regulations, 2014 CFR

2014-10-01

...-15 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) MARINE ENGINEERING PERIODIC...) Each valve shall be opened and examined by the marine inspector at the interval specified in Table 61... the boiler and be examined by the marine inspector at the interval specified by Table 61.05-10 when...

76 FR 12980 - Agency Information Collection Activities: Proposed Collection; Comment Request

Federal Register 2010, 2011, 2012, 2013, 2014

2011-03-09

...) will publish periodic summaries of proposed projects. To request more information on the proposed... allowing SAMHSA to quantify the effects and accomplishments of SAMHSA programs. The following table is an...,000 .03 2,400 $18.40 $44,160 \\1\\ This table represents the maximum additional burden if adult...

46 CFR 61.05-15 - Boiler mountings and attachments.

Code of Federal Regulations, 2012 CFR

2012-10-01

...-15 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) MARINE ENGINEERING PERIODIC...) Each valve shall be opened and examined by the marine inspector at the interval specified in Table 61... the boiler and be examined by the marine inspector at the interval specified by Table 61.05-10 when...

46 CFR 169.247 - Firefighting equipment.

Code of Federal Regulations, 2010 CFR

2010-10-01

... certification and periodic inspection and at such other times as considered necessary all fire-extinguishing... condition of the equipment. The inspector verifies that the tests and inspections required in Tables 169.247.... Table 169.247(a)(1)—Portable Extinguishers Type unit Test Foam Discharge. Clean hose and inside of...

46 CFR 61.05-15 - Boiler mountings and attachments.

Code of Federal Regulations, 2011 CFR

2011-10-01

...-15 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) MARINE ENGINEERING PERIODIC...) Each valve shall be opened and examined by the marine inspector at the interval specified in Table 61... the boiler and be examined by the marine inspector at the interval specified by Table 61.05-10 when...

46 CFR 61.05-15 - Boiler mountings and attachments.

Code of Federal Regulations, 2013 CFR

2013-10-01

...-15 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) MARINE ENGINEERING PERIODIC...) Each valve shall be opened and examined by the marine inspector at the interval specified in Table 61... the boiler and be examined by the marine inspector at the interval specified by Table 61.05-10 when...

26 CFR 1.807-1 - Mortality and morbidity tables.

Code of Federal Regulations, 2010 CFR

2010-04-01

... life reserves); accidental death benefits 1959 Accidental Death Benefits Table. 3. Permanent and paid... of period 2 disablement rates and the 1930 to 1950 termination rates of the 1952 Disability Study of...) The 1930 to 1950 termination rates of the 1952 Disability study of the Society of Actuaries. 5. Group...

Information about Student Enrollment, College Staff and the Budget.

ERIC Educational Resources Information Center

College of the Canyons, Santa Clarita, CA. Office of Institutional Development.

Consisting primarily of charts and tables, this report provides historical data on student enrollment, college staff, and the budget at California's College of the Canyons, focusing primarily on the period from 1990-94. The first section provides tables on student enrollment, including total headcount; enrollment by gender, age group,…

26 CFR 1.62-2 - Reimbursements and other expense allowance arrangements.

Code of Federal Regulations, 2012 CFR

2012-04-01

..., and Taxable Income § 1.62-2 Reimbursements and other expense allowance arrangements. (a) Table of contents. The contents of this section are as follows: (a) Table of contents. (b) Scope. (c) Reimbursement... general. (2) Safe harbors. (i) Fixed date method. (ii) Periodic payment method. (3) Pattern of...

40 CFR 60.56a - Standards for municipal waste combustor operating practices.

Code of Federal Regulations, 2012 CFR

2012-07-01

... cause such facility to exceed the carbon monoxide standards shown in table 1. Table 1—MWC Operating..., at a minimum, address the following elements of MWC unit operation: (1) Summary of the applicable... periodic upset or off-specification conditions; (8) Procedures for minimizing particulate matter carryover...

40 CFR 60.56a - Standards for municipal waste combustor operating practices.

Code of Federal Regulations, 2013 CFR

2013-07-01

... cause such facility to exceed the carbon monoxide standards shown in table 1. Table 1—MWC Operating..., at a minimum, address the following elements of MWC unit operation: (1) Summary of the applicable... periodic upset or off-specification conditions; (8) Procedures for minimizing particulate matter carryover...

40 CFR 60.56a - Standards for municipal waste combustor operating practices.

Code of Federal Regulations, 2011 CFR

2011-07-01

... cause such facility to exceed the carbon monoxide standards shown in table 1. Table 1—MWC Operating..., at a minimum, address the following elements of MWC unit operation: (1) Summary of the applicable... periodic upset or off-specification conditions; (8) Procedures for minimizing particulate matter carryover...

Why Teach the Electron Configuration of the Elements as We Do?

ERIC Educational Resources Information Center

Millikan, Roger C.

1982-01-01

Discusses pros and cons of current methods of teaching electron configurations of elements. Offers alternative instructional strategies, suggesting that although tables of electron configurations are useful and in conjunction with periodic tables may help solve many problems, they should be included as reference material. (Author/JN)

26 CFR 1.62-2 - Reimbursements and other expense allowance arrangements.

Code of Federal Regulations, 2014 CFR

2014-04-01

..., and Taxable Income § 1.62-2 Reimbursements and other expense allowance arrangements. (a) Table of contents. The contents of this section are as follows: (a) Table of contents. (b) Scope. (c) Reimbursement... general. (2) Safe harbors. (i) Fixed date method. (ii) Periodic payment method. (3) Pattern of...

40 CFR 60.56a - Standards for municipal waste combustor operating practices.

Code of Federal Regulations, 2014 CFR

2014-07-01

... cause such facility to exceed the carbon monoxide standards shown in table 1. Table 1—MWC Operating..., at a minimum, address the following elements of MWC unit operation: (1) Summary of the applicable... periodic upset or off-specification conditions; (8) Procedures for minimizing particulate matter carryover...

26 CFR 1.62-2 - Reimbursements and other expense allowance arrangements.

Code of Federal Regulations, 2011 CFR

2011-04-01

..., and Taxable Income § 1.62-2 Reimbursements and other expense allowance arrangements. (a) Table of contents. The contents of this section are as follows: (a) Table of contents. (b) Scope. (c) Reimbursement... general. (2) Safe harbors. (i) Fixed date method. (ii) Periodic payment method. (3) Pattern of...

26 CFR 1.62-2 - Reimbursements and other expense allowance arrangements.

Code of Federal Regulations, 2013 CFR

2013-04-01

..., and Taxable Income § 1.62-2 Reimbursements and other expense allowance arrangements. (a) Table of contents. The contents of this section are as follows: (a) Table of contents. (b) Scope. (c) Reimbursement... general. (2) Safe harbors. (i) Fixed date method. (ii) Periodic payment method. (3) Pattern of...

Periodic Burning In Table Mountain-Pitch Pine Stands

Treesearch

Russell B. Randles; David H. van Lear; Thomas A. Waldrop; Dean M. Simon

2002-01-01

Abstract - The effects of multiple, low intensity burns on vegetation and wildlife habitat in Table Mountain (Pinus pungens Lamb.)-pitch (Pinus rigida Mill.) pine communities were studied in the Blue Ridge Mountains of North Carolina. Treatments consisted of areas burned from one to four times at 3-4 year...

26 CFR 1.168(i)-5 - Table of contents.

Code of Federal Regulations, 2010 CFR

2010-04-01

... period. (ii) Shorter recovery period. (iii) Less accelerated depreciation method. (iv) More accelerated... in the year of replacement. (i) In general. (ii) Applicable recovery period, depreciation method, and... acquired property. (3) Recovery period and/or depreciation method of the properties are the same, or both...

26 CFR 1.168(i)-5 - Table of contents.

Code of Federal Regulations, 2012 CFR

2012-04-01

... period. (ii) Shorter recovery period. (iii) Less accelerated depreciation method. (iv) More accelerated... in the year of replacement. (i) In general. (ii) Applicable recovery period, depreciation method, and... acquired property. (3) Recovery period and/or depreciation method of the properties are the same, or both...

26 CFR 1.168(i)-5 - Table of contents.

Code of Federal Regulations, 2011 CFR

2011-04-01

... period. (ii) Shorter recovery period. (iii) Less accelerated depreciation method. (iv) More accelerated... in the year of replacement. (i) In general. (ii) Applicable recovery period, depreciation method, and... acquired property. (3) Recovery period and/or depreciation method of the properties are the same, or both...

26 CFR 1.168(i)-5 - Table of contents.

Code of Federal Regulations, 2013 CFR

2013-04-01

... period. (ii) Shorter recovery period. (iii) Less accelerated depreciation method. (iv) More accelerated... in the year of replacement. (i) In general. (ii) Applicable recovery period, depreciation method, and... acquired property. (3) Recovery period and/or depreciation method of the properties are the same, or both...

26 CFR 1.168(i)-5 - Table of contents.

Code of Federal Regulations, 2014 CFR

2014-04-01

... period. (ii) Shorter recovery period. (iii) Less accelerated depreciation method. (iv) More accelerated... in the year of replacement. (i) In general. (ii) Applicable recovery period, depreciation method, and... acquired property. (3) Recovery period and/or depreciation method of the properties are the same, or both...

Something New from the Past.

ERIC Educational Resources Information Center

Schmuckler, Joseph S., Ed.

1980-01-01

Includes annotations of articles from previous issues of this periodical on the following topics: balancing equations and nomenclature, the mole, the silver tree experiment, and history of the periodic table. (CS)

Single d-metal atoms on F(s) and F(s+) defects of MgO(001): a theoretical study across the periodic table.

PubMed

Neyman, Konstantin M; Inntam, Chan; Matveev, Alexei V; Nasluzov, Vladimir A; Rösch, Notker

2005-08-24

Single d-metal atoms on oxygen defects F(s) and F(s+) of the MgO(001) surface were studied theoretically. We employed an accurate density functional method combined with cluster models, embedded in an elastic polarizable environment, and we applied two gradient-corrected exchange-correlation functionals. In this way, we quantified how 17 metal atoms from groups 6-11 of the periodic table (Cu, Ag, Au; Ni, Pd, Pt; Co, Rh, Ir; Fe, Ru, Os; Mn, Re; and Cr, Mo, W) interact with terrace sites of MgO. We found bonding with F(s) and F(s+) defects to be in general stronger than that with O2- sites, except for Mn-, Re-, and Fe/F(s) complexes. In M/F(s) systems, electron density is accumulated on the metal center in a notable fashion. The binding energy on both kinds of O defects increases from 3d- to 4d- to 5d-atoms of a given group, at variance with the binding energy trend established earlier for the M/O2- complexes, 4d < 3d < 5d. Regarding the evolution of the binding energy along a period, group 7 atoms are slightly destabilized compared to their group 6 congeners in both the F(s) and F(s+) complexes; for later transition elements, the binding energy increases gradually up to group 10 and finally decreases again in group 11, most strongly on the F(s) site. This trend is governed by the negative charge on the adsorbed atoms. We discuss implications for an experimental detection of metal atoms on oxide supports based on computed core-level energies.

Method For Growth of Crystal Surfaces and Growth of Heteroepitaxial Single Crystal Films Thereon

NASA Technical Reports Server (NTRS)

Powell, J. Anthony (Inventor); Larkin, David J. (Inventor); Neudeck, Philip G. (Inventor); Matus, Lawrence G. (Inventor)

2000-01-01

A method of growing atomically-flat surfaces and high quality low-defect crystal films of semiconductor materials and fabricating improved devices thereon is discussed. The method is also suitable for growing films heteroepitaxially on substrates that are different than the film. The method is particularly suited for growth of elemental semiconductors (such as Si), compounds of Groups III and V elements of the Periodic Table (such as GaN), and compounds and alloys of Group IV elements of the Periodic Table (such as SiC).

DFTB Parameters for the Periodic Table: Part 1, Electronic Structure.

PubMed

Wahiduzzaman, Mohammad; Oliveira, Augusto F; Philipsen, Pier; Zhechkov, Lyuben; van Lenthe, Erik; Witek, Henryk A; Heine, Thomas

2013-09-10

A parametrization scheme for the electronic part of the density-functional based tight-binding (DFTB) method that covers the periodic table is presented. A semiautomatic parametrization scheme has been developed that uses Kohn-Sham energies and band structure curvatures of real and fictitious homoatomic crystal structures as reference data. A confinement potential is used to tighten the Kohn-Sham orbitals, which includes two free parameters that are used to optimize the performance of the method. The method is tested on more than 100 systems and shows excellent overall performance.

Web life: Sixty Symbols

NASA Astrophysics Data System (ADS)

2009-09-01

So what is the site about? If you enjoyed The Periodic Table of Videos we profiled earlier this year (January p35), but found it a bit too...well...chemical, then this is the website for you. Physics does not really have a periodic table, so a handful of scientists from Nottingham University in the UK worked with video-journalist Brady Haran to create one. The result is a 6 × 10 matrix of important symbols in physics and astronomy, each linked to a 5-10 min video describing the symbol's significance.

[Mechanism of renal elimination of 2 elements of group IIIA of the periodic table : aluminum and indium].

PubMed

Galle, P

1981-01-05

Aluminium and indium, two elements of group IIIA of the periodic table, are concentrated by the kidney inside lysosomes of proximal tubule cell. In these lysosomes, aluminium and indium are precipitated as non-soluble phosphate salts and these precipitates are then expelled in the tubular lumen and eliminated with the urinary flow. These data have been visualized by analytical microscopy (ion microscopy and X ray microanalysis). Local acid phosphatases are assumed to permit the concentration of aluminium and indium salts inside the lysosomes.

Positron lifetime calculation for the elements of the periodic table.

PubMed

Campillo Robles, J M; Ogando, E; Plazaola, F

2007-04-30

Theoretical positron lifetime values have been calculated systematically for most of the elements of the periodic table. Self-consistent and non-self-consistent schemes have been used for the calculation of the electronic structure in the solid, as well as different parametrizations for the positron enhancement factor and correlation energy. The results obtained have been studied and compared with experimental data, confirming the theoretical trends. As is known, positron lifetimes in bulk show a periodic behaviour with atomic number. These calculations also confirm that monovacancy lifetimes follow the same behaviour. The effects of enhancement factors used in calculations have been commented upon. Finally, we have analysed the effects that f and d electrons have on positron lifetimes.

75 FR 38757 - Periodic Reporting Exceptions

Federal Register 2010, 2011, 2012, 2013, 2014

2010-07-06

... POSTAL REGULATORY COMMISSION 39 CFR 3055 [Docket No. RM2010-11; Order No. 481] Periodic Reporting...-permanent exceptions to certain rules on periodic reporting of service performance measurement. DATES... 202-789-6820 or [email protected] . SUPPLEMENTARY INFORMATION: Table of Contents I...

Growth of radish and marigold following repeated exposure to nitrogen dioxide, sulfur dioxide, and ozone

DOE Office of Scientific and Technical Information (OSTI.GOV)

Reinert, R.A.; Sanders, J.S.

Radish and marigold plants were exposed to 0.3 ppM of nitrogen dioxide (NO/sub 2/), sulfur dioxide (SO/sub 2/), and /or ozone (O/sub 3/) nine times during a 3-wk period. No interactions among NO/sub 2/, SO/sub 2/, and O/sub 3/ were detected in measurement of radish foliage and root dry weight. Treatments containing O/sub 3/ reduced radish foliage and root (hypocotyl) dry weight 356 and 531 mg/plant, respectively. Interactions among NO/sub 2/, SO/sub 2/ and O/sub 3/ occurred in shoots and roots of marigold. SO/sub 2/ alone reduced marigold shoot and root dry weight, but this effect was reversed in themore » presence of O/sub 3/. The suppressive effect of SO/sub 2/ on root weight was also reversed by NO/sub 2/. Treatments containing SO/sub 2/ reduced dry flower weight 0.17 g/plant, but effects of the pollutant interactions observed in shoots and roots were not present. 8 references, 2 tables.« less

A periodic table of effective field theories

DOE Office of Scientific and Technical Information (OSTI.GOV)

Cheung, Clifford; Kampf, Karol; Novotny, Jiri

We systematically explore the space of scalar effective field theories (EFTs) consistent with a Lorentz invariant and local S-matrix. To do so we define an EFT classification based on four parameters characterizing 1) the number of derivatives per interaction, 2) the soft properties of amplitudes, 3) the leading valency of the interactions, and 4) the spacetime dimension. Carving out the allowed space of EFTs, we prove that exceptional EFTs like the non-linear sigma model, Dirac-Born-Infeld theory, and the special Galileon lie precisely on the boundary of allowed theory space. Using on-shell momentum shifts and recursion relations, we prove that EFTsmore » with arbitrarily soft behavior are forbidden and EFTs with leading valency much greater than the spacetime dimension cannot have enhanced soft behavior. We then enumerate all single scalar EFTs in d < 6 and verify that they correspond to known theories in the literature. Finally, our results suggest that the exceptional theories are the natural EFT analogs of gauge theory and gravity because they are one-parameter theories whose interactions are strictly dictated by properties of the S-matrix.« less

A periodic table of effective field theories

DOE PAGES

Cheung, Clifford; Kampf, Karol; Novotny, Jiri; ...

2017-02-06

We systematically explore the space of scalar effective field theories (EFTs) consistent with a Lorentz invariant and local S-matrix. To do so we define an EFT classification based on four parameters characterizing 1) the number of derivatives per interaction, 2) the soft properties of amplitudes, 3) the leading valency of the interactions, and 4) the spacetime dimension. Carving out the allowed space of EFTs, we prove that exceptional EFTs like the non-linear sigma model, Dirac-Born-Infeld theory, and the special Galileon lie precisely on the boundary of allowed theory space. Using on-shell momentum shifts and recursion relations, we prove that EFTsmore » with arbitrarily soft behavior are forbidden and EFTs with leading valency much greater than the spacetime dimension cannot have enhanced soft behavior. We then enumerate all single scalar EFTs in d < 6 and verify that they correspond to known theories in the literature. Finally, our results suggest that the exceptional theories are the natural EFT analogs of gauge theory and gravity because they are one-parameter theories whose interactions are strictly dictated by properties of the S-matrix.« less

League tables and school effectiveness: a mathematical model.

PubMed Central

Hoyle, Rebecca B; Robinson, James C

2003-01-01

'School performance tables', an alphabetical list of secondary schools along with aggregates of their pupils' performances in national tests, have been published in the UK since 1992. Inevitably, the media have responded by publishing ranked 'league tables'. Despite concern over the potentially divisive effect of such tables, the current government has continued to publish this information in the same form. The effect of this information on standards and on the social make-up of the community has been keenly debated. Since there is no control group available that would allow us to investigate this issue directly, we present here a simple mathematical model. Our results indicate that, while random fluctuations from year to year can cause large distortions in the league-table positions, some schools still establish themselves as 'desirable'. To our surprise, we found that 'value-added' tables were no more accurate than tables based on raw exam scores, while a different method of drawing up the tables, in which exam results are averaged over a period of time, appears to give a much more reliable measure of school performance. PMID:12590748

26 CFR 1.168(i)-6 - Like-kind exchanges and involuntary conversions.

Code of Federal Regulations, 2012 CFR

2012-04-01

.... This paragraph (c) provides rules for determining the applicable recovery period, the applicable... the depreciation allowance using the optional depreciation tables. (ii) Applicable recovery period, depreciation method, and convention. The recovery period, depreciation method, and convention determined under...

26 CFR 1.168(i)-6 - Like-kind exchanges and involuntary conversions.

Code of Federal Regulations, 2014 CFR

2014-04-01

.... This paragraph (c) provides rules for determining the applicable recovery period, the applicable... the depreciation allowance using the optional depreciation tables. (ii) Applicable recovery period, depreciation method, and convention. The recovery period, depreciation method, and convention determined under...

26 CFR 1.168(i)-6 - Like-kind exchanges and involuntary conversions.

Code of Federal Regulations, 2013 CFR

2013-04-01

.... This paragraph (c) provides rules for determining the applicable recovery period, the applicable... the depreciation allowance using the optional depreciation tables. (ii) Applicable recovery period, depreciation method, and convention. The recovery period, depreciation method, and convention determined under...

26 CFR 1.168(i)-6 - Like-kind exchanges and involuntary conversions.

Code of Federal Regulations, 2011 CFR

2011-04-01

.... This paragraph (c) provides rules for determining the applicable recovery period, the applicable... the depreciation allowance using the optional depreciation tables. (ii) Applicable recovery period, depreciation method, and convention. The recovery period, depreciation method, and convention determined under...

Inferring probabilistic stellar rotation periods using Gaussian processes

NASA Astrophysics Data System (ADS)

Angus, Ruth; Morton, Timothy; Aigrain, Suzanne; Foreman-Mackey, Daniel; Rajpaul, Vinesh

2018-02-01

Variability in the light curves of spotted, rotating stars is often non-sinusoidal and quasi-periodic - spots move on the stellar surface and have finite lifetimes, causing stellar flux variations to slowly shift in phase. A strictly periodic sinusoid therefore cannot accurately model a rotationally modulated stellar light curve. Physical models of stellar surfaces have many drawbacks preventing effective inference, such as highly degenerate or high-dimensional parameter spaces. In this work, we test an appropriate effective model: a Gaussian Process with a quasi-periodic covariance kernel function. This highly flexible model allows sampling of the posterior probability density function of the periodic parameter, marginalizing over the other kernel hyperparameters using a Markov Chain Monte Carlo approach. To test the effectiveness of this method, we infer rotation periods from 333 simulated stellar light curves, demonstrating that the Gaussian process method produces periods that are more accurate than both a sine-fitting periodogram and an autocorrelation function method. We also demonstrate that it works well on real data, by inferring rotation periods for 275 Kepler stars with previously measured periods. We provide a table of rotation periods for these and many more, altogether 1102 Kepler objects of interest, and their posterior probability density function samples. Because this method delivers posterior probability density functions, it will enable hierarchical studies involving stellar rotation, particularly those involving population modelling, such as inferring stellar ages, obliquities in exoplanet systems, or characterizing star-planet interactions. The code used to implement this method is available online.

Patterns of genomic and phenomic diversity in wine and table grapes

USDA-ARS?s Scientific Manuscript database

Grapes are one of the most economically and culturally important crops worldwide, and they have been bred for both winemaking and fresh consumption. Here we evaluate patterns of diversity across 33 phenotypes collected over a 17-year period from 580 table and wine grape accessions that belong to one...

76 FR 35431 - Draft National Pollutant Discharge Elimination System (NPDES) General Permit for Stormwater...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-06-17

...: Table 1--Entities Potentially Regulated by This Permit North American Examples of affected Industry... intend the preceding table to be exhaustive, but provides it as a guide for readers regarding entities.../wastetech/guide/construction/index.cfm . B. Extension of Comment Period EPA is extending the deadline for...

17 CFR 200.80a - Appendix A-Documentary materials available to the public.

Code of Federal Regulations, 2013 CFR

2013-04-01

... § 200.80a Appendix A—Documentary materials available to the public. [See footnotes at end of table... Prospectuses (selling circulars) in connection with registration statement 10 Periodic reports (annual... Investment Company Act of 1940 (17 CFR 230.240) 3(b) [See footnotes at end of table] Description Pursuant to...

40 CFR 455.47 - Pretreatment standards for new sources (PSNS).

Code of Federal Regulations, 2013 CFR

2013-07-01

... the requirements of the Pollution Prevention Alternative listed in Table 8 to this part 455 (or received a modification by Best Engineering Judgement for modifications not listed in Table 8 to this part... periodic certification statement as described in § 455.41(b) during the months of June and December of each...

12 CFR 1026.18 - Content of disclosures.

Code of Federal Regulations, 2013 CFR

2013-01-01

...)-(4) of this section shall be in the form of a table, with no more than five columns, with headings... this part. The table shall contain only the information required in paragraphs (s)(2)-(4) of this... the first regular periodic payment will be due and the earliest date on which that rate may apply...

40 CFR 455.45 - New source performance standards (NSPS).

Code of Federal Regulations, 2014 CFR

2014-07-01

... Alternative listed in Table 8 to this part 455 (or received a modification by Best Professional Judgement for modifications not listed in Table 8 of this part 455); (2) The discharger will notify its NPDES permit writer at....41(a); (3) The discharger will submit to its NPDES permitting authority a periodic certification...

40 CFR 455.45 - New source performance standards (NSPS).

Code of Federal Regulations, 2013 CFR

2013-07-01

... Alternative listed in Table 8 to this part 455 (or received a modification by Best Professional Judgement for modifications not listed in Table 8 of this part 455); (2) The discharger will notify its NPDES permit writer at....41(a); (3) The discharger will submit to its NPDES permitting authority a periodic certification...

17 CFR 200.80a - Appendix A-Documentary materials available to the public.

Code of Federal Regulations, 2012 CFR

2012-04-01

... § 200.80a Appendix A—Documentary materials available to the public. [See footnotes at end of table... Prospectuses (selling circulars) in connection with registration statement 10 Periodic reports (annual... Investment Company Act of 1940 (17 CFR 230.240) 3(b) [See footnotes at end of table] Description Pursuant to...

Lidar measurements of stratospheric ozone at Table Mountain, California, since 1988

NASA Technical Reports Server (NTRS)

Mcdermid, I. Stuart; Schmoe, Martha; Walsh, T. Daniel

1994-01-01

Regular measurements of stratospheric ozone concentration profiles have been made at Table Mountain, California, since January 1988. During the period to December 1991, 435 independent profiles were measured by the differential absorption lidar technique. These long-term results, and an evaluation of their quality, is presented in this paper.

40 CFR 455.45 - New source performance standards (NSPS).

Code of Federal Regulations, 2012 CFR

2012-07-01

... Alternative listed in Table 8 to this part 455 (or received a modification by Best Professional Judgement for modifications not listed in Table 8 of this part 455); (2) The discharger will notify its NPDES permit writer at....41(a); (3) The discharger will submit to its NPDES permitting authority a periodic certification...

12 CFR 1026.18 - Content of disclosures.

Code of Federal Regulations, 2014 CFR

2014-01-01

...)-(4) of this section shall be in the form of a table, with no more than five columns, with headings... this part. The table shall contain only the information required in paragraphs (s)(2)-(4) of this... the first regular periodic payment will be due and the earliest date on which that rate may apply...

46 CFR 31.10-18 - Firefighting equipment: General-TB/ALL.

Code of Federal Regulations, 2010 CFR

2010-10-01

... equipment shall be made: Table 31.10-18(b) Type unit Test Soda acid Discharge. Clean hose and inside of... made: Table 31.10-18(c) Type system Test Foam Systems utilizing a soda solution shall have such... for certification and the periodic inspection by discharging foam for approximately 15 seconds from...

40 CFR 455.46 - Pretreatment standards for existing sources (PSES).

Code of Federal Regulations, 2013 CFR

2013-07-01

... listed in Table 8 to this part 455 (or received a modification by Best Engineering Judgement for modifications not listed in Table 8 to this part 455); (2) The discharger will notify its local Control... its local Control Authority a periodic certification statement as described in § 455.41(b) during the...

17 CFR 200.80a - Appendix A-Documentary materials available to the public.

Code of Federal Regulations, 2014 CFR

2014-04-01

... § 200.80a Appendix A—Documentary materials available to the public. [See footnotes at end of table... Prospectuses (selling circulars) in connection with registration statement 10 Periodic reports (annual... Investment Company Act of 1940 (17 CFR 230.240) 3(b) [See footnotes at end of table] Description Pursuant to...

46 CFR 31.10-18 - Firefighting equipment: General-TB/ALL.

Code of Federal Regulations, 2011 CFR

2011-10-01

... equipment shall be made: Table 31.10-18(b) Type unit Test Soda acid Discharge. Clean hose and inside of... made: Table 31.10-18(c) Type system Test Foam Systems utilizing a soda solution shall have such... for certification and the periodic inspection by discharging foam for approximately 15 seconds from...

Information about Student Enrollment, College Staff and the Budget.

ERIC Educational Resources Information Center

College of the Canyons, Santa Clarita, CA. Office of Institutional Development.

Consisting primarily of charts and tables, this report provides historical data on student enrollment, college staff, and the budget at California's College of the Canyons, focusing primarily on the period from 1991 to 1995. The first section provides tables on student enrollment, including total headcount; enrollment by full-/part-time status,…

40 CFR 73.21 - Phase II repowering allowances.

Code of Federal Regulations, 2010 CFR

2010-07-01

... in the following table Unit Year 2000 adjusted basic allowances RE Burger 1 1273 RE Burger 2 1245 RE... manner: EC01SE92.082 where: Forfeiture Period = difference (as a portion of a year) between the end of... table in paragraph (a) of this section. (c)(2) The Administrator will reallocate any allowances...

Patterns of genomic and phenomic diversity in wine and table grapes

USDA-ARS?s Scientific Manuscript database

Grapes are one of the most economically and culturally important crops worldwide and they have been bred for both winemaking and fresh consumption. Here we evaluate patterns of diversity across 33 phenotypes collected over a 17-year period from 580 table and wine grape cultivars that belong to one ...

Winning the game: brain processes in expert, young elite and amateur table tennis players

PubMed Central

Wolf, Sebastian; Brölz, Ellen; Scholz, David; Ramos-Murguialday, Ander; Keune, Philipp M.; Hautzinger, Martin; Birbaumer, Niels; Strehl, Ute

2014-01-01

This study tested two hypotheses: (1) compared with amateurs and young elite, expert table tennis players are characterized by enhanced cortical activation in the motor and fronto-parietal cortex during motor imagery in response to table tennis videos; (2) in elite athletes, world rank points are associated with stronger cortical activation. To this aim, electroencephalographic data were recorded in 14 expert, 15 amateur and 15 young elite right-handed table tennis players. All subjects watched videos of a serve and imagined themselves responding with a specific table tennis stroke. With reference to a baseline period, power decrease/increase of the sensorimotor rhythm (SMR) during the pretask- and task period indexed the cortical activation/deactivation (event-related desynchronization/synchronization, ERD/ERS). Regarding hypothesis (1), 8–10 Hz SMR ERD was stronger in elite athletes than in amateurs with an intermediate ERD in young elite athletes in the motor cortex. Regarding hypothesis (2), there was no correlation between ERD/ERS in the motor cortex and world rank points in elite experts, but a weaker ERD in the fronto-parietal cortex was associated with higher world rank points. These results suggest that motor skill in table tennis is associated with focused excitability of the motor cortex during reaction, movement planning and execution with high attentional demands. Among elite experts, less activation of the fronto-parietal attention network may be necessary to become a world champion. PMID:25386126

Groundwater response to reforestation in the Darling Range of Western Australia

NASA Astrophysics Data System (ADS)

Bell, R. W.; Schofield, N. J.; Loh, I. C.; Bari, M. A.

1990-11-01

Replacement of deep-rooted perennial vegetation with annual crops and pastures has led to rising groundwater tables and transport of previously stored salts to streams in southwest Western Australia. Trials to determine the potential of various reforestation strategies to reverse this process by lowering the groundwater table were commenced in 1976-1981. Results are reported from six experimental sites for the period 1979-1986. Despite the mean annual rainfall of the experimental period being 10% below the 1926-1986 mean, groundwater levels under pasture rose by up to 1.2m. The change in groundwater levels beneath reforestation ranged from a 0.6-m increase to a 3-m decrease relative to the ground surface. Groundwater levels under reforestation in all cases decreased relative to groundwater levels under pasture. The magnitude of this reduction was shown to increase with the proportion of cleared area reforested and with the crown cover of the reforestation. The salinity of the water table decreased by 12% under reforestation and by 32% under pasture over the period 1979-1986.

The Periodic Pyramid

ERIC Educational Resources Information Center

Hennigan, Jennifer N.; Grubbs, W. Tandy

2013-01-01

The chemical elements present in the modern periodic table are arranged in terms of atomic numbers and chemical periodicity. Periodicity arises from quantum mechanical limitations on how many electrons can occupy various shells and subshells of an atom. The shell model of the atom predicts that a maximum of 2, 8, 18, and 32 electrons can occupy…

Nutrient transport and transformation beneath an infiltration basin

USGS Publications Warehouse

Sumner, D.M.; Rolston, D.E.; Bradner, L.A.

1998-01-01

Field experiments were conducted to examine nutrient transport and transformation beneath an infiltration basin used for the disposal of treated wastewater. Removal of nitrogen from infiltrating water by denitrification was negligible beneath the basin, probably because of subsurface aeration as a result of daily interruptions in basin loading. Retention of organic nitrogen in the upper 4.6 m of the unsaturated zone (water table depth of approximately 11 m) during basin loading resulted in concentrations of nitrate as much as 10 times that of the applied treated wastewater, following basin 'rest' periods of several weeks, which allowed time for mineralization and nitrification. Approximately 90% of the phosphorus in treated wastewater was removed within the upper 4.6 m of the subsurface, primarily by adsorption reactions, with abundant iron and aluminum oxyhydroxides occurring as soil coatings. A reduction in the flow rate of infiltrating water arriving at the water table may explain the accumulation of relatively coarse (>0.45 ??m), organic forms of nitrogen and phosphorus slightly below the water table. Mineralization and nitrification reactions at this second location of organic nitrogen accumulation contributed to concentrations of nitrate as much as three times that of the applied treated wastewater. Phosphorus, which accumulated below the water table, was immobilized by adsorption or precipitation reactions during basin rest periods.Field experiments were conducted to examine nutrient transport and transformation beneath an infiltration basin used for the disposal of treated wastewater. Removal of nitrogen from infiltrating water by denitrification was negligible beneath the basin, probably because of subsurface aeration as a result of daily interruptions in basin loading. Retention of organic nitrogen in the upper 4.6 m of the unsaturated zone (water table depth of approximately 11 m) during basin loading resulted in concentrations of nitrate as much as 10 times that of the applied treated wastewater, following basin 'rest' periods of several weeks, which allowed time for mineralization and nitrification. Approximately 90% of the phosphorus in treated wastewater was removed within the upper 4.6 m of the subsurface, primarily by adsorption reactions, with abundant iron and aluminum oxyhydroxides occurring as soil coatings. A reduction in the flow rate of infiltrating water arriving at the water table may explain the accumulation of relatively coarse (>0.45 ??m), organic forms of nitrogen and phosphorus slightly below the water table. Mineralization and nitrification reactions at this second location of organic nitrogen accumulation contributed to concentrations of nitrate as much as three times that of the applied treated wastewater. Phosphorus, which accumulated below the water table, was immobilized by adsorption or precipitation reactions during basin rest periods.

Real-time 4D ERT monitoring of river water intrusion into a former nuclear disposal site using a transient warping-mesh water table boundary (Invited)

NASA Astrophysics Data System (ADS)

Johnson, T.; Hammond, G. E.; Versteeg, R. J.; Zachara, J. M.

2013-12-01

The Hanford 300 Area, located adjacent to the Columbia River in south-central Washington, USA, is the site of former research and uranium fuel rod fabrication facilities. Waste disposal practices at site included discharging between 33 and 59 metric tons of uranium over a 40 year period into shallow infiltration galleries, resulting in persistent uranium contamination within the vadose and saturated zones. Uranium transport from the vadose zone to the saturated zone is intimately linked with water table fluctuations and river water intrusion driven by upstream dam operations. As river stage increases, the water table rises into the vadose zone and mobilizes contaminated pore water. At the same time, river water moves inland into the aquifer, and river water chemistry facilitates further mobilization by enabling uranium desorption from contaminated sediments. As river stage decreases, flow moves toward the river, ultimately discharging contaminated water at the river bed. River water specific conductance at the 300 Area varies around 0.018 S/m whereas groundwater specific conductance varies around 0.043 S/m. This contrast provides the opportunity to monitor groundwater/river water interaction by imaging changes in bulk conductivity within the saturated zone using time-lapse electrical resistivity tomography. Previous efforts have demonstrated this capability, but have also shown that disconnecting regularization constraints at the water table is critical for obtaining meaningful time-lapse images. Because the water table moves with time, the regularization constraints must also be transient to accommodate the water table boundary. This was previously accomplished with 2D time-lapse ERT imaging by using a finely discretized computational mesh within the water table interval, enabling a relatively smooth water table to be defined without modifying the mesh. However, in 3D this approach requires a computational mesh with an untenable number of elements. In order to accommodate the water table boundary in 3D, we propose a time-lapse warping mesh inversion, whereby mesh elements that traverse the water table are modified to generate a smooth boundary at the known water table position, enabling regularization constraints to be accurately disconnected across the water table boundary at a given time. We demonstrate the approach using a surface ERT array installed adjacent to the Columbia River at the 300 Area, consisting of 352 electrodes and covering an area of approximately 350 m x 350 m. Using autonomous data collection, transmission, and filtering tools coupled with high performance computing resources, the 4D imaging process is automated and executed in real time. Each time lapse survey consists of approximately 40,000 measurements and 4 surveys are collected and processed per day from April 1st , 2013 to September 30th, 2013. The data are inverted on an unstructured tetrahedral mesh that honors LiDAR-based surface topography and is comprised of approximately 905,000 elements. Imaging results show the dynamic 4D extent of river water intrusion, and are validated with well-based fluid conductivity measurements at each monitoring well within the imaging domain.

Estimating drain flow from measured water table depth in layered soils under free and controlled drainage

NASA Astrophysics Data System (ADS)

Saadat, Samaneh; Bowling, Laura; Frankenberger, Jane; Kladivko, Eileen

2018-01-01

Long records of continuous drain flow are important for quantifying annual and seasonal changes in the subsurface drainage flow from drained agricultural land. Missing data due to equipment malfunction and other challenges have limited conclusions that can be made about annual flow and thus nutrient loads from field studies, including assessments of the effect of controlled drainage. Water table depth data may be available during gaps in flow data, providing a basis for filling missing drain flow data; therefore, the overall goal of this study was to examine the potential to estimate drain flow using water table observations. The objectives were to evaluate how the shape of the relationship between drain flow and water table height above drain varies depending on the soil hydraulic conductivity profile, to quantify how well the Hooghoudt equation represented the water table-drain flow relationship in five years of measured data at the Davis Purdue Agricultural Center (DPAC), and to determine the impact of controlled drainage on drain flow using the filled dataset. The shape of the drain flow-water table height relationship was found to depend on the selected hydraulic conductivity profile. Estimated drain flow using the Hooghoudt equation with measured water table height for both free draining and controlled periods compared well to observed flow with Nash-Sutcliffe Efficiency values above 0.7 and 0.8 for calibration and validation periods, respectively. Using this method, together with linear regression for the remaining gaps, a long-term drain flow record for a controlled drainage experiment at the DPAC was used to evaluate the impacts of controlled drainage on drain flow. In the controlled drainage sites, annual flow was 14-49% lower than free drainage.

THz and Sub-THz Capabilities of a Table-Top Radiation Source Driven by an RF Thermionic Electron Gun

DOE Office of Scientific and Technical Information (OSTI.GOV)

Smirnov, Alexei V.; Agustsson, R.; Boucher, S.

Design features and experimental results are presented for a sub-mm wave source [1] based on APS RF thermionic electron gun. The setup includes compact alpha-magnet, quadrupoles, sub-mm-wave radiators, and THz optics. The sub-THz radiator is a planar, oversized structure with gratings. Source upgrade for generation frequencies above 1 THz is discussed. The THz radiator will use a short-period undulator having 1 T field amplitude, ~20 cm length, and integrated with a low-loss oversized waveguide. Both radiators are integrated with a miniature horn antenna and a small ~90°-degree in-vacuum bending magnet. The electron beamline is designed to operate different modes includingmore » conversion to a flat beam interacting efficiently with the radiator. The source can be used for cancer diagnostics, surface defectoscopy, and non-destructive testing. Sub-THz experiment demonstrated a good potential of a robust, table-top system for generation of a narrow bandwidth THz radiation. This setup can be considered as a prototype of a compact, laser-free, flexible source capable of generation of long trains of Sub-THz and THz pulses with repetition rates not available with laser-driven sources.« less

NEW HYPERON EQUATIONS OF STATE FOR SUPERNOVAE AND NEUTRON STARS IN DENSITY-DEPENDENT HADRON FIELD THEORY

DOE Office of Scientific and Technical Information (OSTI.GOV)

Banik, Sarmistha; Hempel, Matthias; Bandyopadhyay, Debades

2014-10-01

We develop new hyperon equation of state (EoS) tables for core-collapse supernova simulations and neutron stars. These EoS tables are based on a density-dependent relativistic hadron field theory where baryon-baryon interaction is mediated by mesons, using the parameter set DD2 for nucleons. Furthermore, light and heavy nuclei along with interacting nucleons are treated in the nuclear statistical equilibrium model of Hempel and Schaffner-Bielich which includes excluded volume effects. Of all possible hyperons, we consider only the contribution of Λs. We have developed two variants of hyperonic EoS tables: in the npΛφ case the repulsive hyperon-hyperon interaction mediated by the strangemore » φ meson is taken into account, and in the npΛ case it is not. The EoS tables for the two cases encompass a wide range of densities (10{sup –12} to ∼1 fm{sup –3}), temperatures (0.1 to 158.48 MeV), and proton fractions (0.01 to 0.60). The effects of Λ hyperons on thermodynamic quantities such as free energy per baryon, pressure, or entropy per baryon are investigated and found to be significant at higher densities. The cold, β-equilibrated EoS (with the crust included self-consistently) results in a 2.1 M {sub ☉} maximum mass neutron star for the npΛφ case, whereas that for the npΛ case is 1.95 M {sub ☉}. The npΛφ EoS represents the first supernova EoS table involving hyperons that is directly compatible with the recently measured 2 M {sub ☉} neutron stars.« less

Probing quantum effects in lithium

NASA Astrophysics Data System (ADS)

Deemyad, Shanti; Zhang, Rong

2018-05-01

In periodic table lithium is the first element immediately after helium and the lightest metal. While fascinating quantum nature of condensed helium is suppressed at high densities, lithium is expected to adapt more quantum solid behavior under compression. This is due to the presence of long range interactions in metallic systems for which an increase in the de-Boer parameter (λ/σ, where σ is the minimum interatomic distance and λ is the de-Broglie wavelength) is predicted at higher densities [1,2]. Physics of dense lithium offers a rich playground to look for new emergent quantum phenomena in condensed matter and has been subject of many theoretical and experimental investigations. In this article recent progress in studying the quantum nature of dense lithium will be discussed.

Principles of assembly reveal a periodic table of protein complexes.

PubMed

Ahnert, Sebastian E; Marsh, Joseph A; Hernández, Helena; Robinson, Carol V; Teichmann, Sarah A

2015-12-11

Structural insights into protein complexes have had a broad impact on our understanding of biological function and evolution. In this work, we sought a comprehensive understanding of the general principles underlying quaternary structure organization in protein complexes. We first examined the fundamental steps by which protein complexes can assemble, using experimental and structure-based characterization of assembly pathways. Most assembly transitions can be classified into three basic types, which can then be used to exhaustively enumerate a large set of possible quaternary structure topologies. These topologies, which include the vast majority of observed protein complex structures, enable a natural organization of protein complexes into a periodic table. On the basis of this table, we can accurately predict the expected frequencies of quaternary structure topologies, including those not yet observed. These results have important implications for quaternary structure prediction, modeling, and engineering. Copyright © 2015, American Association for the Advancement of Science.

Recovery of phase inconsistencies in continuously moving table extended field of view magnetic resonance imaging acquisitions.

PubMed

Kruger, David G; Riederer, Stephen J; Rossman, Phillip J; Mostardi, Petrice M; Madhuranthakam, Ananth J; Hu, Houchun H

2005-09-01

MR images formed using extended FOV continuously moving table data acquisition can have signal falloff and loss of lateral spatial resolution at localized, periodic positions along the direction of table motion. In this work we identify the origin of these artifacts and provide a means for correction. The artifacts are due to a mismatch of the phase of signals acquired from contiguous sampling fields of view and are most pronounced when the central k-space views are being sampled. Correction can be performed using the phase information from a periodically sampled central view to adjust the phase of all other views of that view cycle, making the net phase uniform across each axial plane. Results from experimental phantom and contrast-enhanced peripheral MRA studies show that the correction technique substantially eliminates the artifact for a variety of phase encode orders. Copyright (c) 2005 Wiley-Liss, Inc.

Learning about Probability from Text and Tables: Do Color Coding and Labeling through an Interactive-User Interface Help?

ERIC Educational Resources Information Center

Clinton, Virginia; Morsanyi, Kinga; Alibali, Martha W.; Nathan, Mitchell J.

2016-01-01

Learning from visual representations is enhanced when learners appropriately integrate corresponding visual and verbal information. This study examined the effects of two methods of promoting integration, color coding and labeling, on learning about probabilistic reasoning from a table and text. Undergraduate students (N = 98) were randomly…

Finite Element Analysis of Fluid-Structure Interaction in a Blast-Resistant Window System (PREPRINT)

DTIC Science & Technology

2008-03-01

membrane effects that only become significant at large out-of-plane deflection levels ( Ugural 1981). Similarly, the mass of each panel, and therefore the...Forum, 465, 143-150. Ugural A.C. (1981). Stresses in Plates and Shells, McGraw-Hill, New York. 30 TABLE CAPTIONS Table 1. Properties of air (at

Analyzing Discourse: Text and Talk. Georgetown University Round Table on Languages and Linguistics (Washington, D.C., 1981).

ERIC Educational Resources Information Center

Tannen, Deborah, Ed.

The Georgetown Round Table on discourse analysis dealt with the following aspects of the topic: Emerson's essay on language; oral remembering and narrative structures; persuasive discourse; social construction of topical cohesion; discourse as an interactional achievement; the place of intonation; topic as the unit of analysis in a criminal law…

Design and application of BIM based digital sand table for construction management

NASA Astrophysics Data System (ADS)

Fuquan, JI; Jianqiang, LI; Weijia, LIU

2018-05-01

This paper explores the design and application of BIM based digital sand table for construction management. Aiming at the demands and features of construction management plan for bridge and tunnel engineering, the key functional features of digital sand table should include three-dimensional GIS, model navigation, virtual simulation, information layers, and data exchange, etc. That involving the technology of 3D visualization and 4D virtual simulation of BIM, breakdown structure of BIM model and project data, multi-dimensional information layers, and multi-source data acquisition and interaction. Totally, the digital sand table is a visual and virtual engineering information integrated terminal, under the unified data standard system. Also, the applications shall contain visual constructing scheme, virtual constructing schedule, and monitoring of construction, etc. Finally, the applicability of several basic software to the digital sand table is analyzed.

Farewell Year 12: Chemistry at Nagle College

ERIC Educational Resources Information Center

Awad, Maro; Azar, Stefanie; Vieiro, Bianca; van Rooy, Wilhelmina

2012-01-01

With one week to go, Year 12 chemistry made their final practical an event to be remembered. We decided to take that infamous Periodic Table to the next level, transforming it into an edible table! Armed with 114 biscuits, multiple tubs filled with coloured icing, plastic knives, and gloves and "Professional" piping bags, we converted the science…

Consumption of Energy in New York State: 1972 (with Estimates for 1973).

ERIC Educational Resources Information Center

Hausgaard, Olaf

This report contains tabular data on energy consumption for the calendar year 1972 and a forecast of natural gas requirements for the period 1973 to 1976. Broad sector categories used in the tables are electric utilities, residential commercial, industrial, and transportation. Tables show energy consumption by primary source and major sector for…

40 CFR Appendix IV to Part 265 - Tests for Significance

Code of Federal Regulations, 2014 CFR

2014-07-01

... changes in the concentration or value of an indicator parameter in periodic ground-water samples when... then be compared to the value of the t-statistic found in a table for t-test of significance at the specified level of significance. A calculated value of t which exceeds the value of t found in the table...

40 CFR Appendix IV to Part 265 - Tests for Significance

Code of Federal Regulations, 2011 CFR

2011-07-01

... changes in the concentration or value of an indicator parameter in periodic ground-water samples when... then be compared to the value of the t-statistic found in a table for t-test of significance at the specified level of significance. A calculated value of t which exceeds the value of t found in the table...

12 CFR 226.18 - Content of disclosures.

Code of Federal Regulations, 2012 CFR

2012-01-01

... information in paragraphs (s)(2)-(4) of this section shall be in the form of a table, with no more than five...) in Appendix H to this part. The table shall contain only the information required in paragraphs (s)(2... on which the first regular periodic payment will be due and the earliest date on which that rate may...

40 CFR 455.42 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the...

Code of Federal Regulations, 2012 CFR

2012-07-01

...) The discharger will meet the requirements of the Pollution Prevention Alternative listed in Table 8 to... in Table 8 of this part 455); (2) The discharger will notify its NPDES permit writer at the time of... discharger will submit to its NPDES permitting authority a periodic certification statements as described in...

40 CFR 455.42 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the...

Code of Federal Regulations, 2013 CFR

2013-07-01

...) The discharger will meet the requirements of the Pollution Prevention Alternative listed in Table 8 to... in Table 8 of this part 455); (2) The discharger will notify its NPDES permit writer at the time of... discharger will submit to its NPDES permitting authority a periodic certification statements as described in...

40 CFR 455.44 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the...

Code of Federal Regulations, 2013 CFR

2013-07-01

...) The discharger will meet the requirements of the Pollution Prevention Alternative listed in Table 8 to... on Table 8 of this part 455); (2) The discharger will notify its NPDES permitting authority at the....41(a); (3) The discharger will submit to its NPDES permit writer a periodic certification statement...

40 CFR 455.43 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the...

Code of Federal Regulations, 2013 CFR

2013-07-01

... meet the requirements of the Pollution Prevention Alternative listed in Table 8 to this part 455 (or received a modification by Best Professional Judgement for modifications not listed in Table 8 of this part... submit to its NPDES permitting authority a periodic certification statement as described in § 455.41(b...

40 CFR 455.44 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the...

Code of Federal Regulations, 2014 CFR

2014-07-01

...) The discharger will meet the requirements of the Pollution Prevention Alternative listed in Table 8 to... on Table 8 of this part 455); (2) The discharger will notify its NPDES permitting authority at the....41(a); (3) The discharger will submit to its NPDES permit writer a periodic certification statement...

40 CFR 455.42 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the...

Code of Federal Regulations, 2014 CFR

2014-07-01

...) The discharger will meet the requirements of the Pollution Prevention Alternative listed in Table 8 to... in Table 8 of this part 455); (2) The discharger will notify its NPDES permit writer at the time of... discharger will submit to its NPDES permitting authority a periodic certification statements as described in...

40 CFR 455.43 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the...

Code of Federal Regulations, 2014 CFR

2014-07-01

... meet the requirements of the Pollution Prevention Alternative listed in Table 8 to this part 455 (or received a modification by Best Professional Judgement for modifications not listed in Table 8 of this part... submit to its NPDES permitting authority a periodic certification statement as described in § 455.41(b...

40 CFR 455.44 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the...

Code of Federal Regulations, 2012 CFR

2012-07-01

...) The discharger will meet the requirements of the Pollution Prevention Alternative listed in Table 8 to... on Table 8 of this part 455); (2) The discharger will notify its NPDES permitting authority at the....41(a); (3) The discharger will submit to its NPDES permit writer a periodic certification statement...

40 CFR 455.43 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the...

Code of Federal Regulations, 2012 CFR

2012-07-01

... meet the requirements of the Pollution Prevention Alternative listed in Table 8 to this part 455 (or received a modification by Best Professional Judgement for modifications not listed in Table 8 of this part... submit to its NPDES permitting authority a periodic certification statement as described in § 455.41(b...

40 CFR Appendix IV to Part 265 - Tests for Significance

Code of Federal Regulations, 2012 CFR

2012-07-01

... changes in the concentration or value of an indicator parameter in periodic ground-water samples when... then be compared to the value of the t-statistic found in a table for t-test of significance at the specified level of significance. A calculated value of t which exceeds the value of t found in the table...

40 CFR Appendix IV to Part 265 - Tests for Significance

Code of Federal Regulations, 2013 CFR

2013-07-01

... changes in the concentration or value of an indicator parameter in periodic ground-water samples when... then be compared to the value of the t-statistic found in a table for t-test of significance at the specified level of significance. A calculated value of t which exceeds the value of t found in the table...

Summary of Capital and Operations & Maintenance Cost Experience of Automated Guideway Transit Systems Costs and Trends for the period 1976-1978. Supplement I

DOT National Transportation Integrated Search

1979-10-01

This costs supplement is presented in the form of a series of tables and figures which summarize the data obtained as well as the results of analysis. Comments and explanatory notes relative to tables/figures are made where appropriate. Also included...

14 CFR 171.311 - Signal format requirements.

Code of Federal Regulations, 2013 CFR

2013-01-01

... zero state of the data filed represents the lower limit of the absolute range of the coded parameter... transmitted as a “zero” DPSK signal lasting for a six-bit period (see Tables 4a and 4b). Table 4a—Approach... microsecond. T0=Time separation in microseconds between TO and FRO beam centers corresponding to zero degrees...

14 CFR 171.311 - Signal format requirements.

Code of Federal Regulations, 2011 CFR

2011-01-01

... zero state of the data filed represents the lower limit of the absolute range of the coded parameter... transmitted as a “zero” DPSK signal lasting for a six-bit period (see Tables 4a and 4b). Table 4a—Approach... microsecond. T0=Time separation in microseconds between TO and FRO beam centers corresponding to zero degrees...

14 CFR 171.311 - Signal format requirements.

Code of Federal Regulations, 2012 CFR

2012-01-01

... zero state of the data filed represents the lower limit of the absolute range of the coded parameter... transmitted as a “zero” DPSK signal lasting for a six-bit period (see Tables 4a and 4b). Table 4a—Approach... microsecond. T0=Time separation in microseconds between TO and FRO beam centers corresponding to zero degrees...

14 CFR 171.311 - Signal format requirements.

Code of Federal Regulations, 2014 CFR

2014-01-01

... zero state of the data filed represents the lower limit of the absolute range of the coded parameter... transmitted as a “zero” DPSK signal lasting for a six-bit period (see Tables 4a and 4b). Table 4a—Approach... microsecond. T0=Time separation in microseconds between TO and FRO beam centers corresponding to zero degrees...

HAWQS Beta Flyer

EPA Pesticide Factsheets

HAWQS is a web-based interactive water quantity and quality modeling system that provides users with interactive web interfaces and maps; pre-loaded input data; outputs that include tables, charts, graphs and raw output data; and a user guide.

HAWQS beta flyer

EPA Pesticide Factsheets

HAWQS is a web-based interactive water quantity and quality modeling system that provides users with interactive web interfaces and maps; pre-loaded input data; outputs that include tables, charts, graphs and raw output data; and a user guide.

Experimental and computational evidence of halogen bonds involving astatine

NASA Astrophysics Data System (ADS)

Guo, Ning; Maurice, Rémi; Teze, David; Graton, Jérôme; Champion, Julie; Montavon, Gilles; Galland, Nicolas

2018-03-01

The importance of halogen bonds—highly directional interactions between an electron-deficient σ-hole moiety in a halogenated compound and an acceptor such as a Lewis base—is being increasingly recognized in a wide variety of fields from biomedicinal chemistry to materials science. The heaviest halogens are known to form stronger halogen bonds, implying that if this trend continues down the periodic table, astatine should exhibit the highest halogen-bond donating ability. This may be mitigated, however, by the relativistic effects undergone by heavy elements, as illustrated by the metallic character of astatine. Here, the occurrence of halogen-bonding interactions involving astatine is experimentally evidenced. The complexation constants of astatine monoiodide with a series of organic ligands in cyclohexane solution were derived from distribution coefficient measurements and supported by relativistic quantum mechanical calculations. Taken together, the results show that astatine indeed behaves as a halogen-bond donor—a stronger one than iodine—owing to its much more electrophilic σ-hole.

Fundamental parameters and origin of the very eccentric binary 41 Dra

NASA Astrophysics Data System (ADS)

Tokovinin, A.; Balega, Y. Y.; Pluzhnik, E. A.; Shatsky, N. I.; Gorynya, N. A.; Weigelt, G.

2003-10-01

The evolutionary status and origin of the most eccentric known binary in a quadruple system, 41 Dra (e=0.9754, period 3.413 yr), are discussed. New observations include the much improved combined speckle-interferometric orbit, resolved photometry of the components and their spectroscopic analysis. The age of the system is 2.5 +/- 0.2 Gyr; all four components are likely coeval. The high eccentricity of the orbit together with known age and masses provide a constraint on the tidal circularization theory: it seems that the eccentric orbit survived because the convective zones of the F-type dwarfs were very thin. Now as the components of 41 Dra are leaving the Main Sequence, their increased interaction at each periastron passage may result in detectable changes in period and eccentricity. Tables 1, 2, and 3 are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/409/245

Beaver Mediated Water Table Dynamics in Mountain Peatlands

NASA Astrophysics Data System (ADS)

Karran, D. J.; Westbrook, C.; Bedard-Haughn, A.

2016-12-01

Water table dynamics play an important role in the ecological and biogeochemical processes that regulate carbon and water storage in peatlands. Beaver are common in these habitats and the dams they build have been shown to raise water tables in other environments. However, the impact of beaver dams in peatlands, where water tables rest close to the surface, has yet to be determined. We monitored a network of 50 shallow wells in a Canadian Rocky Mountain peatland for 6 years. During this period, a beaver colony was maintaining a number of beaver ponds for four years until a flood event removed the colony from the area and breached some of the dams. Two more years of data were collected after the flood event to assess whether the dams enhanced groundwater storage. Beaver dams raised water tables just as they do in other environments. Furthermore, water tables within 100 meters of beaver dams were more stable than those further away and water table stability overall was greater before the flood event. Our results suggest the presence/absence of beaver in peatlands has implications for groundwater water storage and overall system function.

48 CFR 9904.414-63 - Effective date.

Code of Federal Regulations, 2010 CFR

2010-10-01

... during the cost accounting period. This applies both to items that are subject to periodic depreciation or amortization and also to such items as land that are not subject to periodic write-offs. Unless... requirements specified in the Cost Accounting Standard No. 403. Tables I through VI deal with home office...

48 CFR 9904.414-63 - Effective date.

Code of Federal Regulations, 2014 CFR

2014-10-01

... during the cost accounting period. This applies both to items that are subject to periodic depreciation or amortization and also to such items as land that are not subject to periodic write-offs. Unless... requirements specified in the Cost Accounting Standard No. 403. Tables I through VI deal with home office...

40 CFR 63.130 - Transfer operations provisions-periodic recordkeeping and reporting.

Code of Federal Regulations, 2012 CFR

2012-07-01

...-periodic recordkeeping and reporting. 63.130 Section 63.130 Protection of Environment ENVIRONMENTAL..., and Wastewater § 63.130 Transfer operations provisions—periodic recordkeeping and reporting. (a) Each... monitored under § 63.127 of this subpart, and listed in table 7 of this subpart or specified by the...

48 CFR 9904.414-63 - Effective date.

Code of Federal Regulations, 2012 CFR

2012-10-01

... during the cost accounting period. This applies both to items that are subject to periodic depreciation or amortization and also to such items as land that are not subject to periodic write-offs. Unless... requirements specified in the Cost Accounting Standard No. 403. Tables I through VI deal with home office...

40 CFR 63.130 - Transfer operations provisions-periodic recordkeeping and reporting.

Code of Federal Regulations, 2013 CFR

2013-07-01

...-periodic recordkeeping and reporting. 63.130 Section 63.130 Protection of Environment ENVIRONMENTAL..., and Wastewater § 63.130 Transfer operations provisions—periodic recordkeeping and reporting. (a) Each... monitored under § 63.127 of this subpart, and listed in table 7 of this subpart or specified by the...

A Mathematical View of Water Table Fluctuations in a Shallow Aquifer in Brazil.

PubMed

Neto, Dagmar C; Chang, Hung K; van Genuchten, Martinus Th

2016-01-01

Detailed monitoring of the groundwater table can provide important data about both short- and long-term aquifer processes, including information useful for estimating recharge and facilitating groundwater modeling and remediation efforts. In this paper, we presents results of 4 years (2002 to 2005) of monitoring groundwater water levels in the Rio Claro Aquifer using observation wells drilled at the Rio Claro campus of São Paulo State University in Brazil. The data were used to follow natural periodic fluctuations in the water table, specifically those resulting from earth tides and seasonal recharge cycles. Statistical analyses included methods of time-series analysis using Fourier analysis, cross-correlation, and R/S analysis. Relationships could be established between rainfall and well recovery, as well as the persistence and degree of autocorrelation of the water table variations. We further used numerical solutions of the Richards equation to obtain estimates of the recharge rate and seasonable groundwater fluctuations. Seasonable soil moisture transit times through the vadose zone obtained with the numerical solution were very close to those obtained with the cross-correlation analysis. We also employed a little-used deep drainage boundary condition to obtain estimates of seasonable water table fluctuations, which were found to be consistent with observed transient groundwater levels during the period of study. © 2015, National Ground Water Association.

Where to place the positive muon in the Periodic Table?

PubMed

Goli, Mohammad; Shahbazian, Shant

2015-03-14

In a recent study it was suggested that the positively charged muon is capable of forming its own "atoms in molecules" (AIM) in the muonic hydrogen-like molecules, composed of two electrons, a muon and one of the hydrogen's isotopes, thus deserves to be placed in the Periodic Table [Phys. Chem. Chem. Phys., 2014, 16, 6602]. In the present report, the capacity of the positively charged muon in forming its own AIM is considered in a large set of molecules replacing muons with all protons in the hydrides of the second and third rows of the Periodic Table. Accordingly, in a comparative study the wavefunctions of both sets of hydrides and their muonic congeners are first derived beyond the Born-Oppenheimer (BO) paradigm, assuming protons and muons as quantum waves instead of clamped particles. Then, the non-BO wavefunctions are used to derive the AIM structures of both hydrides and muonic congeners within the context of the multi-component quantum theory of atoms in molecules. The results of the analysis demonstrate that muons are generally capable of forming their own atomic basins and the properties of these basins are not fundamentally different from those AIM containing protons. Particularly, the bonding modes in the muonic species seem to be qualitatively similar to their congener hydrides and no new bonding model is required to describe the bonding of muons to a diverse set of neighboring atoms. All in all, the positively charged muon is similar to a proton from the structural and bonding viewpoint and deserves to be placed in the same box of hydrogen in the Periodic Table. This conclusion is in line with a large body of studies on the chemical kinetics of the muonic molecules portraying the positively charged muon as a lighter isotope of hydrogen.

The discovery of plutonium reorganized the periodic table and aided the discovery of new elements

DOE Office of Scientific and Technical Information (OSTI.GOV)

Clark, David L

2009-01-01

The modern Periodic Table derives principally from the work of the great Russian scientist Dimitri Mendeleev, who in 1869 enunciated a 'periodic law' that the properties of the elements are a periodic function of their atomic weights, and arranged the 65 known elements in a 'periodic table'. Fundamentally, every column in the main body of the Periodic Table is a grouping of elements that display similar chemical and physical behavior. Similar properties are therefore exhibited by elements with widely different mass. Chemical periodicity is central to the study of chemistry, and no other generalization comes close to its ability tomore » systematize and rationalize known chemical facts. With the development of atomic theory, and an understanding of the electronic structure of atoms, chemical periodicity and the periodic table now find their natural explanation in the electronic structure of atoms. Moving from left to right along any row, the elements are arranged sequentially according to nuclear charge (the atomic number). Electrons counter balance that nuclear charge, hence each successive element has one more electron in its configuration. The electron configuration, or distribution of electrons among atomic orbitals, may be determined by application of the Pauli principle (paired spin in the same orbital) and the aufbau principle (which outlines the order of filling of electrons into shells of orbitals - s, p, d, f, etc.) such that in a given atom, no two electrons may have all four quantum numbers identical. In 1939, only three elements were known to be heavier than actinium: thorium, protactinium, and uranium. All three exhibited variable oxidation states and a complex chemistry. Thorium, protactinium and uranium were assumed to be d-transition metals and were placed in the Periodic Table under hafnium, tantalum, and tungsten, respectively. By 1940, McMillan and Abelson bombarded uranium atoms with slow neutrons and successfully identified atoms of element 93, which they named neptunium after the planet Neptune. This rapidly set the stage for the discovery of the next succeeding element, plutonium (Seaborg, McMillan, Kennedy, and Wahl, 1940), named after the next planet away from the Sun, Pluto. The newly discovered elements were presumed to fit comfortably in the Periodic Table under rhenium and osmium, respectively. However, subsequent tracer chemical experiments showed that neptunium and plutonium were closer in their chemical properties to uranium than their presumed homologues, rhenium and osmium. Spectroscopic evidence also indicated that the new elements were not typical transition elements, but had f-electrons in their valence shell. Thus, several researchers, including McMillan and Wahl, and Zachariasen at Los Alamos, suggested that these elements might be part of a second inner-transition series in which the 5f-electron subshell was being filled. It was not clear, however, where the new series would begin. McMillian had proposed a 'uraninide series' that started with neptunium, but attempts to isolate elements with atomic numbers 95 and 96 based on assumed similarities to uranium were unsuccessful. Both Wahl and Zacharias en had proposed a thoride series that started with protactinium. In 1944, Seaborg proposed that the series started with thorium, and that all of the elements heavier than actinium constituted an 'actinide' series similar to the lanthanides. Because the 5f-shell began filling in the same relative position as the 4f-shell, the electronic configuration of elements in the two series would be similar. Guided by the hypothesis that elements 95 and 96 were homologues of europium and gadolinium, new experiments were designed and the elements were uniquely synthesized and separated from all others. The new elements were subsequently named americium and curium. Seaborg's 'Actinide Concept' thus played a major role in the discovery of the transplutonium elements. It provided the framework that supported synthesis, isolation, and identification of the succeeding actinide elements berkelium through lawrencium and beyond to the element with Atomic Number 118. But as research has progressed in the study of the actinide elements, it has become clear that the 5f series has a unique chemistry that is distinct from the lanthanides. One of the focal points of study in actinide research has been to better define the scope and limitations of the actinide concept. Seaborg's actinide concept of heavy element electronic structure, prediction that the actinides form a transition series analogous to the rare earth series of lanthanide elements, is now well accepted in the scientific community and included in all standard configurations of the Periodic Table.« less

Water table dynamics in undisturbed, drained and restored blanket peat

NASA Astrophysics Data System (ADS)

Holden, J.; Wallage, Z. E.; Lane, S. N.; McDonald, A. T.

2011-05-01

SummaryPeatland water table depth is an important control on runoff production, plant growth and carbon cycling. Many peatlands have been drained but are now subject to activities that might lead to their restoration including the damming of artificial drains. This paper investigates water table dynamics on intact, drained and restored peatland slopes in a blanket peat in northern England using transects of automated water table recorders. Long-term (18 month), seasonal and short-term (storm event) records are explored. The restored site had drains blocked 6 years prior to monitoring commencing. The spatially-weighted mean water table depths over an 18 month period were -5.8 cm, -8.9 cm and -11.5 cm at the intact, restored and drained sites respectively. Most components of water table behaviour at the restored site, including depth exceedance probability curves, seasonality of water table variability, and water table responses to individual rainfall events were intermediate between that of the drained and intact sites. Responses also depended on location with respect to the drains. The results show that restoration of drained blanket peat is difficult and the water table dynamics may not function in the same way as those in undisturbed blanket peat even many years after management intervention. Further measurement of hydrological processes and water table responses to peatland restoration are required to inform land managers of the hydrological success of those projects.

Large-Scale Atomic/Molecular Massively Parallel Simulator (LAMMPS) Simulations of the Molecular Crystal alphaRDX

DTIC Science & Technology

2013-08-01

potential for HMX / RDX (3, 9). ...................................................................................8 1 1. Purpose This work...6 dispersion and electrostatic interactions. Constants for the SB potential are given in table 1. 8 Table 1. SB potential for HMX / RDX (3, 9...modeling dislocations in the energetic molecular crystal RDX using the Large-Scale Atomic/Molecular Massively Parallel Simulator (LAMMPS) molecular

The Influence of an Interactive Educational Approach on Visitors' Learning in a Swiss Zoo

ERIC Educational Resources Information Center

Lindemann-Matthies, Petra; Kamer, Tobias

2005-01-01

A new but costly approach to providing visitors of zoos with information on conservation is the presentation of small exhibits by zoo professionals or volunteers. At these "touch tables" visitors can find out about the biology, ecology, and conservation of animals kept in the zoo. We studied the effect of a touch table on visitors'…

The Nimbus 4 data catalog. Volume 3: Data orbits 1124-1956, 1 July - 31 August 1970

NASA Technical Reports Server (NTRS)

1971-01-01

The Nimbus 4 satellite catalog for the period of 1 July through 31 August, 1970 is presented. The subjects discussed are: (1) summary of operations, (2) orbital elements and daily sensors on table, (3) image dissector camera system montages, and (4) temperature-humidity infrared radiometer montages. Data are presented as tables and photographs.

77 FR 76942 - 2013-2014 Summer Flounder and Scup Specifications; 2013 Black Sea Bass Specifications...

Federal Register 2010, 2011, 2012, 2013, 2014

2012-12-31

... announced in a Federal Register notice prior to the start of the 2014 fishing year. Table 3--2014... Register notice prior to the start of the 2014 fishing year. Table 4--Scup Specifications Commercial... overage of the 2012 Winter II period will be addressed in July 2013, prior to the start of the 2013 Winter...

The Timber Resource Inventory Model (TRIM): a projection model for timber supply and policy analysis.

Treesearch

P.L. Tedder; R.N. La Mont; J.C. Kincaid

1987-01-01

TRIM (Timber Resource Inventory Model) is a yield table projection system developed for timber supply projections and policy analysis. TRIM simulates timber growth, inventories, management and area changes, and removals over the projection period. Programs in the TRIM system, card-by-card descriptions of required inputs, table formats, and sample results are presented...

46 CFR 11.217 - Examination procedures and denial of officer endorsements.

Code of Federal Regulations, 2011 CFR

2011-10-01

... deck and engineer unlimited officer endorsements are administered at periodic intervals. The examination fee set out in table 10.219(a) in § 10.219 of this chapter must be paid before the applicant may... discretion of the OCMI. The examination fee set out in table 10.219(a) in § 10.219 of this chapter must be...

40 CFR 63.2850 - How do I comply with the hazardous air pollutant emission standards?

Code of Federal Regulations, 2010 CFR

2010-07-01

...) Periodic SSM reports in accordance with § 63.2861(c). (iii) Immediate SSM reports in accordance with § 63... and table 1 of this section for sources under normal operation, and the schedules for demonstrating compliance for existing sources under normal operation in table 2 of this section. (c) New sources. Your new...

40 CFR 63.2850 - How do I comply with the hazardous air pollutant emission standards?

Code of Federal Regulations, 2013 CFR

2013-07-01

... accordance with § 63.2861(a). (ii) Periodic SSM reports in accordance with § 63.2861(c). (iii) Immediate SSM... paragraph (a) of this section and table 1 of this section for sources under normal operation, and the schedules for demonstrating compliance for existing sources under normal operation in table 2 of this...

46 CFR 11.217 - Examination procedures and denial of officer endorsements.

Code of Federal Regulations, 2010 CFR

2010-10-01

... deck and engineer unlimited officer endorsements are administered at periodic intervals. The examination fee set out in table 10.219(a) in § 10.219 of this chapter must be paid before the applicant may... discretion of the OCMI. The examination fee set out in table 10.219(a) in § 10.219 of this chapter must be...

40 CFR 63.2850 - How do I comply with the hazardous air pollutant emission standards?

Code of Federal Regulations, 2014 CFR

2014-07-01

... accordance with § 63.2861(a). (ii) Periodic SSM reports in accordance with § 63.2861(c). (iii) Immediate SSM... paragraph (a) of this section and table 1 of this section for sources under normal operation, and the schedules for demonstrating compliance for existing sources under normal operation in table 2 of this...

40 CFR 63.2850 - How do I comply with the hazardous air pollutant emission standards?

Code of Federal Regulations, 2012 CFR

2012-07-01

... accordance with § 63.2861(a). (ii) Periodic SSM reports in accordance with § 63.2861(c). (iii) Immediate SSM... paragraph (a) of this section and table 1 of this section for sources under normal operation, and the schedules for demonstrating compliance for existing sources under normal operation in table 2 of this...

40 CFR 63.2850 - How do I comply with the hazardous air pollutant emission standards?

Code of Federal Regulations, 2011 CFR

2011-07-01

...) Periodic SSM reports in accordance with § 63.2861(c). (iii) Immediate SSM reports in accordance with § 63... and table 1 of this section for sources under normal operation, and the schedules for demonstrating compliance for existing sources under normal operation in table 2 of this section. (c) New sources. Your new...

40 CFR 51.122 - Emissions reporting requirements for SIP revisions relating to budgets for NOX emissions.

Code of Federal Regulations, 2014 CFR

2014-07-01

... NOX emissions data as described in this section. (c) Each revision must provide for periodic reporting...) of this section. (3) Through 2011, reports are to be submitted according to the schedule in Table 1... reports are to be submitted each year that a triennial report is not required. Table 1—Schedule for...

26 CFR 1.45G-0 - Table of contents for the railroad track maintenance credit rules.

Code of Federal Regulations, 2010 CFR

2010-04-01

.... (1) In general. (2) Definitions. (i) Trade or business. (ii) Group and controlled group. (iii) Group.... (6) Tax accounting periods used. (i) In general. (ii) Special rule when timing of QRTME is... table of contents for § 1.45G-1. § 1.45G-1Railroad track maintenance credit. (a) In general. (b...

Summary of Computer Usage and Inventory of Computer Utilization in Curriculum, FY 1988-89.

ERIC Educational Resources Information Center

Tennessee Univ., Chattanooga. Center of Excellence for Computer Applications.

In addition to data on FY 1988-89, the 12 tables that constitute the major part of this report on computer utilization at the University of Tennessee at Chattanooga (UTC) provide comparisons among the 10 annual inventories that have been conducted, and demonstrate growth patterns over the 10-year period. The first five tables organize data by…

COSMIC monthly progress report

NASA Technical Reports Server (NTRS)

1994-01-01

Activities of the Computer Software Management and Information Center (COSMIC) are summarized for the month of January 1994. Tables showing the current inventory of programs available from COSMIC are presented and program processing and evaluation activities are discussed. Marketing and customer service activities in this period are presented as is the progress report of NASTRAN maintenance and support. Tables of disseminations and budget summary conclude the report.

40 CFR 63.6625 - What are my monitoring, installation, collection, operation, and maintenance requirements?

Code of Federal Regulations, 2012 CFR

2012-07-01

... requirements? (a) If you elect to install a CEMS as specified in Table 5 of this subpart, you must install... periodic data quality checks in accordance with 40 CFR part 60, appendix F, procedure 1. (3) As specified... you are required to install a continuous parameter monitoring system (CPMS) as specified in Table 5 of...

Gravity and Height Variations at Medicina, Italy

NASA Astrophysics Data System (ADS)

Bruni, Sara; Zerbini, Susanna; Errico, Maddalena; Santi, Efisio; Wziontek, Hartmut

2017-04-01

Since 1996, at the Medicina station, height and gravity variations are monitored continuously by means of GPS, VLBI and superconducting gravimeter (SG) data. Additionally, absolute gravity observations are performed twice a year and environmental parameters, among others water table levels, are regularly acquired. Levelling between the different monuments at the site area is also carried out repeatedly to constrain local ties in the vertical position. Two GPS systems are located very close to each other, and both are in close proximity to the VLBI antenna. Twenty years of data are now available, which allow investigating both long- and short-period height and gravity signals together with their relevant correlations. Natural land subsidence, which is well known to occur in the area, is a major component of the observed long-term behavior; however, non-linear long-period signatures are also present in the time series. On a shorter time scale, fingerprints of the water table seasonal oscillations can be recognized in the data. The Medicina site is characterized by clayey soil subjected to consolidation effects when the water table lowers during summer periods. The pillar on which the SG is installed is especially affected because of its shallow foundation, causing height decreases in the order of 2.5-3 cm for water table lowering of 2 m. This study presents a comparative analysis of the different data sets with the aim of separating mass and deformation contributions in the SG gravity record.

Flexibility in data interpretation: effects of representational format.

PubMed

Braithwaite, David W; Goldstone, Robert L

2013-01-01

Graphs and tables differentially support performance on specific tasks. For tasks requiring reading off single data points, tables are as good as or better than graphs, while for tasks involving relationships among data points, graphs often yield better performance. However, the degree to which graphs and tables support flexibility across a range of tasks is not well-understood. In two experiments, participants detected main and interaction effects in line graphs and tables of bivariate data. Graphs led to more efficient performance, but also lower flexibility, as indicated by a larger discrepancy in performance across tasks. In particular, detection of main effects of variables represented in the graph legend was facilitated relative to detection of main effects of variables represented in the x-axis. Graphs may be a preferable representational format when the desired task or analytical perspective is known in advance, but may also induce greater interpretive bias than tables, necessitating greater care in their use and design.

At the Table with Family and Making Family Meals Manageable

MedlinePlus

... and community settings. Regular family meals and the social interaction they provide are essential for helping your child ... parenting can work against successful nourishment and parenting interactions ... social situations outside of the immediate family. Resources A ...

A high-speed drug interaction search system for ease of use in the clinical environment.

PubMed

Takada, Masahiro; Inada, Hiroshi; Nakazawa, Kazuo; Tani, Shoko; Iwata, Michiaki; Sugimoto, Yoshihisa; Nagata, Satoru

2012-12-01

With the advancement of pharmaceutical development, drug interactions have become increasingly complex. As a result, a computer-based drug interaction search system is required to organize the whole of drug interaction data. To overcome problems faced with the existing systems, we developed a drug interaction search system using a hash table, which offers higher processing speeds and easier maintenance operations compared with relational databases (RDB). In order to compare the performance of our system and MySQL RDB in terms of search speed, drug interaction searches were repeated for all 45 possible combinations of two out of a group of 10 drugs for two cases: 5,604 and 56,040 drug interaction data. As the principal result, our system was able to process the search approximately 19 times faster than the system using the MySQL RDB. Our system also has several other merits such as that drug interaction data can be created in comma-separated value (CSV) format, thereby facilitating data maintenance. Although our system uses the well-known method of a hash table, it is expected to resolve problems common to existing systems and to be an effective system that enables the safe management of drugs.

Interactive data based on Apriori - AHP - C4.5 results assessment method

NASA Astrophysics Data System (ADS)

Zhao, Quan; Zhang, Li

2017-05-01

AHP method for weight calculation method, will introduce the subjective concept of "experts, supposed steps", for the objective result has certain uncertainty, causes the classroom interaction data attribute weights proportion difference is not big, the whole class achievement trend of convergence, introduce the concept of Apriori-AHP. C4.5 is used to calculate the weight of attribute column, and then using the Apriori-AHP algorithm calculate attribute weights, attribute importance weights on judgment performance indicators table overall consideration, with the weight of index table of gifted student achievement, make the class performance trends to fluctuate, have tended to be "standard" real results for teacher reference.

Beyond the Periodic Table of Elements: The Role of Superatoms.

PubMed

Jena, Puru

2013-05-02

Atomic clusters composed of homo or heteroatomic species constitute an intermediate phase of matter where every atom counts and whose properties depend on their size, shape, composition, and charge. If specific clusters mimicking the chemistry of atoms can be produced, they can be thought of as man-made superatoms forming the building blocks of a new three-dimensional periodic table. Novel materials with tailored properties can then be synthesized by assembling these superatoms. This invited Perspective presents a brief summary of the pioneering works that led to this concept, and highlights the recent breakthroughs that hold promise for a new era in materials science.

Radiation exposure during in-situ pinning of slipped capital femoral epiphysis hips: does the patient positioning matter?

PubMed

Mohammed, Riazuddin; Johnson, Karl; Bache, Ed

2010-07-01

Multiple radiographic images may be necessary during the standard procedure of in-situ pinning of slipped capital femoral epiphysis (SCFE) hips. This procedure can be performed with the patient positioned on a fracture table or a radiolucent table. Our study aims to look at any differences in the amount and duration of radiation exposure for in-situ pinning of SCFE performed using a traction table or a radiolucent table. Sixteen hips in thirteen patients who were pinned on radiolucent table were compared for the cumulative radiation exposure to 35 hips pinned on a fracture table in 33 patients during the same time period. Cumulative radiation dose was measured as dose area product in Gray centimeter2 and the duration of exposure was measured in minutes. Appropriate statistical tests were used to test the significance of any differences. Mean cumulative radiation dose for SCFE pinned on radiolucent table was statistically less than for those pinned on fracture table (P<0.05). The mean duration of radiation exposure on either table was not significantly different. Lateral projections may increase the radiation doses compared with anteroposterior projections because of the higher exposure parameters needed for side imaging. Our results showing decreased exposure doses on the radiolucent table are probably because of the ease of a frog leg lateral positioning obtained and thereby the ease of lateral imaging. In-situ pinning of SCFE hips on a radiolucent table has an additional advantage that the radiation dose during the procedure is significantly less than that of the procedure that is performed on a fracture table.

10 CFR 35.2645 - Records of periodic spot-checks for gamma stereotactic radiosurgery units.

Code of Federal Regulations, 2013 CFR

2013-01-01

... 10 Energy 1 2013-01-01 2013-01-01 false Records of periodic spot-checks for gamma stereotactic... MATERIAL Records § 35.2645 Records of periodic spot-checks for gamma stereotactic radiosurgery units. (a) A... and intercom systems, timer termination, treatment table retraction mechanism, and stereotactic frames...

48 CFR 9904.414-63 - Effective date.

Code of Federal Regulations, 2013 CFR

2013-10-01

... period. This applies both to items that are subject to periodic depreciation or amortization and also to such items as land that are not subject to periodic write-offs. Unless there is a major fluctuation, it.... 403. Tables I through VI deal with home office expense allocations to business units. The A Division...

10 CFR 35.2645 - Records of periodic spot-checks for gamma stereotactic radiosurgery units.

Code of Federal Regulations, 2014 CFR

2014-01-01

... 10 Energy 1 2014-01-01 2014-01-01 false Records of periodic spot-checks for gamma stereotactic... MATERIAL Records § 35.2645 Records of periodic spot-checks for gamma stereotactic radiosurgery units. (a) A... and intercom systems, timer termination, treatment table retraction mechanism, and stereotactic frames...

40 CFR 63.130 - Transfer operations provisions-periodic recordkeeping and reporting.

Code of Federal Regulations, 2011 CFR

2011-07-01

... 40 Protection of Environment 9 2011-07-01 2011-07-01 false Transfer operations provisions-periodic... § 63.130 Transfer operations provisions—periodic recordkeeping and reporting. (a) Each owner or... § 63.127 of this subpart, and listed in table 7 of this subpart or specified by the Administrator in...

10 CFR 35.2645 - Records of periodic spot-checks for gamma stereotactic radiosurgery units.

Code of Federal Regulations, 2012 CFR

2012-01-01

... 10 Energy 1 2012-01-01 2012-01-01 false Records of periodic spot-checks for gamma stereotactic... MATERIAL Records § 35.2645 Records of periodic spot-checks for gamma stereotactic radiosurgery units. (a) A... and intercom systems, timer termination, treatment table retraction mechanism, and stereotactic frames...

Methane Emissions From Western Siberian Wetlands: Heterogeneity and Sensitivity to Climate Change

NASA Astrophysics Data System (ADS)

Bohn, T. J.; Lettenmaier, D. P.; Podest, E.; McDonald, K. C.; Sathulur, K.; Bowling, L. C.; Friborg, T.

2007-12-01

Prediction of methane emissions from high-latitude wetlands is important given concerns about their sensitivity to a warming climate. As a basis for prediction of wetland methane emissions at regional scales, we have coupled the Variable Infiltration Capacity macroscale hydrological model (VIC) with the Biosphere-Energy-Transfer- Hydrology terrestrial ecosystem model (BETHY) and a wetland methane emissions model to make large-scale estimates of methane emissions as a function of soil temperature, water table depth, and net primary productivity (NPP), with a parameterization of the sub-grid heterogeneity of the water table depth based on topographic wetness index. Using landcover classifications derived from L-band satellite synthetic aperture radar imagery, we simulated methane emissions for the Chaya River basin in western Siberia, an area that includes the Bakchar Bog, for a retrospective baseline period of 1980-1999, and evaluated their sensitivity to increases in temperature of 0-5 °C and increases in precipitation of 0-15%. The interactions of temperature and precipitation, through their effects on the water table depth, play an important role in determining methane emissions from these wetlands. The balance between these effects varies spatially, and their net effect depends in part on sub- grid topographic heterogeneity. Higher temperatures alone increase methane production in saturated areas, but cause those saturated areas to shrink in extent, resulting in a net reduction in methane emissions. Higher precipitation alone raises water tables and expands the saturated area, resulting in a net increase in methane emissions. Combining a temperature increase of 3 °C and an increase of 10% in precipitation, to represent the climate conditions likely in western Siberia at the end of this century, results in roughly a doubling of annual methane emissions. This work was carried out at the University of Washington, at Purdue University, and at the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.

Trends in Student Financing of Undergraduate Education: Selected Years, 1995-96 to 2011-12. Web Tables. NCES 2014-013

ERIC Educational Resources Information Center

National Center for Education Statistics, 2014

2014-01-01

Between 1995-96 and 2011-12, the number of undergraduates attending postsecondary institutions in the United States increased from nearly 17 million to 23 million. The web tables presented in this report provide a comprehensive look over a 16-year period at the trends in how undergraduates enrolled in U.S. postsecondary institutions finance their…

78 FR 55723 - Agency Information Collection Activities; Submission for Office of Management and Budget Review...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-09-11

... information as follows: Table 1--Estimated Annual Reporting Burden \\1\\ Number of Average Activity/21 CFR... 16 40 640 822.30) Periodic reports (Sec. 822.38) 131 3 393 40 15,720 Total 33,360 \\1\\ There are no.... Explanation of Reporting Burden Estimate. The burden captured in table 1 of this document is based on the data...

Developing Tools for Ecological Forestry and Carbon Management in Longleaf Pine

DTIC Science & Technology

2016-08-01

22 Table 5.2. Carbon concentrations of plants in the ground cover layer by growth form and carbon concentrations in longleaf...harvest. The stand is connected at the edges to form periodic boundary conditions (toroidal) ...............................................241...coarse root mass. Table 5.2. Carbon concentrations (%) of plants in the ground cover layer (< 1 m in height) by growth form and C

Neutron Scattering Reference

Science.gov Websites

Conversion Factors Periodic Table of the Elements Chart of the Nuclides Map of the Nuclides Computer Index of (Atominstitut der Österreichischen Universitäten) Neutron Activation Table of Elements Neutron Scattering at neutronsources.org. The information contained here in the Neutron Scattering Web has been

Federal Funds for Research and Development: Fiscal Years 1980, 1981, and 1982. Volume XXX. Detailed Statistical Tables. Surveys of Science Resources Series.

ERIC Educational Resources Information Center

National Science Foundation, Washington, DC.

During the March through July 1981 period a total of 36 Federal agencies and their subdivisions (95 individual respondents) submitted data in response to the Annual Survey of Federal Funds for Research and Development, Volume XXX, conducted by the National Science Foundation. The detailed statistical tables presented in this report were derived…

Cultural Resources Survey at Selected Locations, Table Rock Lake, Missouri and Arkansas,

DTIC Science & Technology

1986-12-01

terrace along the river banks, and this alluvial material interfingers with fine-grained colluvium (redeposited loess) and cherty residuum washed fran...by block nhstber) Archaic Period Interfluve Meander Core Rice Complex Bluff Shelter James River Complex Mississippian Sprfld Plteu Cultural Resource...Invt Jefferson City Chert Osage Table Rock Lake Dalton Kings River Ozark Highlands White River Geomorphology Long Creek Paleo-Indian Basin 20

Allylic amination reactivity of Ni, Pd, and Pt heterobimetallic and monometallic complexes.

PubMed

Carlsen, Ryan W; Ess, Daniel H

2016-06-14

Transition metal heterobimetallic complexes with dative metal-metal interactions have the potential for novel fast reactivity. There are few studies that both compare the reactivity of different metal centers in heterobimetallic complexes and compare bimetallic reactivity to monometallic reactivity. Here we report density-functional calculations that show the reactivity of [Cl2Ti(N(t)BuPPh2)2M(II)(η(3)-methallyl)] heterobimetallic complexes for allylic amination follows M = Ni > Pd > Pt. This reactivity trend was not anticipated since the amine addition transition state involves M(II) to M(0) reduction and this could disadvantage Ni. Comparison of heterobimetallic complexes to the corresponding monometallic (CH2)2(N(t)BuPPh2)2M(II)(η(3)-methallyl) complexes reveals that this reactivity trend is due to the bimetallic interaction and that the bimetallic interaction significantly lowers the barrier height for amine addition by >10 kcal mol(-1). The impact of the early transition metal center on the amination addition barrier height depends on the late transition metal center. The lowest barrier heights for this reaction occur when late and early transition metal centers are from the same periodic table row.

United States life tables eliminating certain causes of death, 1999-2001.

PubMed

Arias, Elizabeth; Heron, Melonie; Tejada-Vera, Betzaida

2013-05-31

This report presents abridged cause-elimination life tables and multiple-decrement life table functions for 33 selected causes of death, by race (white and black) and sex, for the total United States. It is the fourth in a set of reports that present life table data for the United States and each state for the period 1999-2001. The life table functions presented in this report represent the mortality experience of a hypothetical cohort assuming that a particular cause of death is eliminated. The report includes a description of the methodology used to estimate the life table functions shown in four sets of tables. Each set contains seven tables, one each for the total population, total males, total females, white males, white females, black males, and black females. From birth, a person has a 31% chance of dying of Diseases of heart (heart disease) and a 22% chance of dying of Malignant neoplasms (cancer). In contrast, the probabilities of dying from Accidents (unintentional injuries), Diabetes mellitus (diabetes), and Septicemia--3 of the 10 leading causes of death in 1991-2001--are much smaller. Likewise, elimination of heart disease would increase life expectancy at birth by almost 4 years, and elimination of cancer by more than 3 years. Other leading causes of death have a much smaller impact.

A computer program designed to produce tables from alphanumeric data

USGS Publications Warehouse

Ridgley, Jennie L.; Schnabel, Robert Wayne

1978-01-01

This program is designed to produce tables from alphanumeric data. Each line of data that appears in the table is entered into a data file as a single line of data. Where necessary, a predetermined delimiter is added to break up the data into column data. The program can process the following types of data: (1) title, (2) headnote, (3) footnote, (4) two levels of column headers, (5) solid lines, (6) blank lines, (7) most types of numeric data, and (8) all types of alphanumeric data. In addition, the program can produce a series of continuation tables from large data sets. Fitting of all data to the final table format is performed by the program, although provisions have been made for user-modification of the final format. The width of the table is adjustable, but may not exceed 158 characters per line. The program is useful in that it permits alteration of original data or table format without having to physically retype all or portions of the table. The final results may be obtained quickly using interactive terminals, and execution of the program requires only minimal knowledge of computer usage. Tables produced may be of publishable quality, especially when reduced. Complete user documentation and program listing are included. NOTE: Although this program has been subjected to many tests a warranty on accuracy or proper functioning is neither implied nor expressed.

Frustration across the periodic table: heterolytic cleavage of dihydrogen by metal complexes

DOE Office of Scientific and Technical Information (OSTI.GOV)

Bullock, R. Morris; Chambers, Geoffrey M.

2017-07-24

This Perspective examines the field of Frustrated Lewis Pairs (FLPs) in the context of transition metal mediated heterolytic cleavage of H2, with a particular emphasis on molecular complexes bearing an intramolecular Lewis base. FLPs have traditionally been associated with group compounds, yet many transition metal reactions support a broader classification of FLPs to include certain types of transition metal complexes with reactivity resembling main group based FLPs. This article surveys transition metal complexes that heterolytically cleave H2, which vary in the degree that the Lewis pairs within these systems interact. Particular attention is focused on complexes bearing a pendant aminemore » function as the base. Consideration of transition metal compounds in the context of FLPs can inspire new innovations and improvements in transition metal catalysis.« less

Fusion pumped light source

DOEpatents

Pappas, Daniel S.

1989-01-01

Apparatus is provided for generating energy in the form of light radiation. A fusion reactor is provided for generating a long, or continuous, pulse of high-energy neutrons. The neutron flux is coupled directly with the lasing medium. The lasing medium includes a first component selected from Group O of the periodic table of the elements and having a high inelastic scattering cross section. Gamma radiation from the inelastic scattering reactions interacts with the first component to excite the first component, which decays by photon emission at a first output wavelength. The first output wavelength may be shifted to a second output wavelength using a second liquid component responsive to the first output wavelength. The light outputs may be converted to a coherent laser output by incorporating conventional optics adjacent the laser medium.

Accurate spin-orbit and spin-other-orbit contributions to the g-tensor for transition metal containing systems.

PubMed

Van Yperen-De Deyne, A; Pauwels, E; Van Speybroeck, V; Waroquier, M

2012-08-14

In this paper an overview is presented of several approximations within Density Functional Theory (DFT) to calculate g-tensors in transition metal containing systems and a new accurate description of the spin-other-orbit contribution for high spin systems is suggested. Various implementations in a broad variety of software packages (ORCA, ADF, Gaussian, CP2K, GIPAW and BAND) are critically assessed on various aspects including (i) non-relativistic versus relativistic Hamiltonians, (ii) spin-orbit coupling contributions and (iii) the gauge. Particular attention is given to the level of accuracy that can be achieved for codes that allow g-tensor calculations under periodic boundary conditions, as these are ideally suited to efficiently describe extended condensed-phase systems containing transition metals. In periodic codes like CP2K and GIPAW, the g-tensor calculation schemes currently suffer from an incorrect treatment of the exchange spin-orbit interaction and a deficient description of the spin-other-orbit term. In this paper a protocol is proposed, making the predictions of the exchange part to the g-tensor shift more plausible. Focus is also put on the influence of the spin-other-orbit interaction which becomes of higher importance for high-spin systems. In a revisited derivation of the various terms arising from the two-electron spin-orbit and spin-other-orbit interaction (SOO), new insight has been obtained revealing amongst other issues new terms for the SOO contribution. The periodic CP2K code has been adapted in view of this new development. One of the objectives of this study is indeed a serious enhancement of the performance of periodic codes in predicting g-tensors in transition metal containing systems at the same level of accuracy as the most advanced but time consuming spin-orbit mean-field approach. The methods are first applied on rhodium carbide but afterwards extended to a broad test set of molecules containing transition metals from the fourth, fifth and sixth row of the periodic table. The set contains doublets as well as high-spin molecules.

Hydrologic assessment of three drainage basins in the Pinelands of southern New Jersey, 2004-06

USGS Publications Warehouse

Walker, Richard L.; Nicholson, Robert S.; Storck, Donald A.

2011-01-01

The New Jersey Pinelands is an ecologically diverse area in the southern New Jersey Coastal Plain, most of which overlies the Kirkwood-Cohansey aquifer system. The demand for groundwater from this aquifer system is increasing as local development increases. Because any increase in groundwater withdrawals has the potential to affect streamflows and wetland water levels, and ultimately threaten the ecological health and diversity of the Pinelands ecosystem, the U.S. Geological Survey, in cooperation with the New Jersey Pinelands Commission, began a multi-phase hydrologic investigation in 2004 to characterize the hydrologic system supporting the aquatic and wetland communities of the New Jersey Pinelands area (Pinelands). The current investigation of the hydrology of three representative drainage basins in the Pinelands (Albertson Brook, McDonalds Branch, and Morses Mill Stream basins) included a compilation of existing data; collection of water-level and streamflow data; mapping of the water-table altitude and depth to the water table; and analyses of water-level and streamflow variability, subsurface gradients and flow patterns, and water budgets. During 2004-06, a hydrologic database of existing and new data from wells and stream sites was compiled. Methods of data collection and analysis were defined, and data networks consisting of 471 wells and 106 surface-water sites were established. Hydrographs from 26 water-level-monitoring wells and four streamflow-gaging stations were analyzed to show the response of water levels and streamflow to precipitation and recharge with respect to the locations of these wells and streams within each basin. Water-level hydrographs show varying hydraulic gradients and flow potentials, and indicate that responses to recharge events vary with well depth and proximity to recharge and discharge areas. Results of the investigation provide a detailed characterization of hydrologic conditions, processes, and relations among the components of the hydrologic cycle in the Pinelands. In the Pinelands, recharge replenishes the aquifer system and contributes to groundwater flow, most of which moves to wetlands and surface water where natural discharge occurs. Some groundwater flow is intercepted by supply wells. Recharge rates generally are highest during the non-growing season and are inversely related to evapotranspiration. Analysis of subsurface hydraulic gradients, water-table fluctuations, and streamflow variability indicates a strong linkage between groundwater and wetlands, lakes and streams. Gradient analysis indicates that most wetlands are in groundwater discharge areas, but some wetlands are in groundwater recharge areas. The depth to the water table ranges from zero at surface-water features up to about 10 meters in topographically high areas. Depth to water fluctuates seasonally, and the magnitude of these fluctuations generally increases with distance from surface water. Variations in the permeability of the soils and sediments of the aquifer system strongly affect patterns of water movement through the subsurface and the interaction of groundwater with wetlands, lakes and streams. Mean annual streamflow during 2004-06 ranged from 83 to 106 percent of the long-term mean annual discharge, indicating that the data-collection period can be considered representative of average conditions. Measurements of groundwater levels, stream stage, and stream discharge and locations of start-of-flow are illustrated in basin-wide maps of water-table altitude, depth to the water table, and stream base flow during the period. Water-level data collected along 15 hydrologic transects that span the range of environments from uplands through wetlands to surface water were used to determine hydraulic gradients, potential flow directions, and areas of recharge and discharge. These data provide information about the localized interactions of groundwater with wetlands and surface water. Wetlands were categorized with r

TOPMODEL simulations of streamflow and depth to water table in Fishing Brook Watershed, New York, 2007-09

USGS Publications Warehouse

Nystrom, Elizabeth A.; Burns, Douglas A.

2011-01-01

TOPMODEL uses a topographic wetness index computed from surface-elevation data to simulate streamflow and subsurface-saturation state, represented by the saturation deficit. Depth to water table was computed from simulated saturation-deficit values using computed soil properties. In the Fishing Brook Watershed, TOPMODEL was calibrated to the natural logarithm of streamflow at the study area outlet and depth to water table at Sixmile Wetland using a combined multiple-objective function. Runoff and depth to water table responded differently to some of the model parameters, and the combined multiple-objective function balanced the goodness-of-fit of the model realizations with respect to these parameters. Results show that TOPMODEL reasonably simulated runoff and depth to water table during the study period. The simulated runoff had a Nash-Sutcliffe efficiency of 0.738, but the model underpredicted total runoff by 14 percent. Depth to water table computed from simulated saturation-deficit values matched observed water-table depth moderately well; the root mean squared error of absolute depth to water table was 91 millimeters (mm), compared to the mean observed depth to water table of 205 mm. The correlation coefficient for temporal depth-to-water-table fluctuations was 0.624. The variability of the TOPMODEL simulations was assessed using prediction intervals grouped using the combined multiple-objective function. The calibrated TOPMODEL results for the entire study area were applied to several subwatersheds within the study area using computed hydrogeomorphic properties of the subwatersheds.

Smart Drill-Down: A New Data Exploration Operator

PubMed Central

Joglekar, Manas; Garcia-Molina, Hector; Parameswaran, Aditya

2015-01-01

We present a data exploration system equipped with smart drill-down, a novel operator for interactively exploring a relational table to discover and summarize “interesting” groups of tuples. Each such group of tuples is represented by a rule. For instance, the rule (a, b, ★, 1000) tells us that there are a thousand tuples with value a in the first column and b in the second column (and any value in the third column). Smart drill-down presents an analyst with a list of rules that together describe interesting aspects of the table. The analyst can tailor the definition of interesting, and can interactively apply smart drill-down on an existing rule to explore that part of the table. In the demonstration, conference attendees will be able to use the data exploration system equipped with smart drill-down, and will be able to contrast smart drill-down to traditional drill-down, for various interestingness measures, and resource constraints. PMID:26844008

Methyl cation affinities of neutral and anionic maingroup-element hydrides: trends across the periodic table and correlation with proton affinities.

PubMed

Mulder, R Joshua; Guerra, Célia Fonseca; Bickelhaupt, F Matthias

2010-07-22

We have computed the methyl cation affinities in the gas phase of archetypal anionic and neutral bases across the periodic table using ZORA-relativistic density functional theory (DFT) at BP86/QZ4P//BP86/TZ2P. The main purpose of this work is to provide the methyl cation affinities (and corresponding entropies) at 298 K of all anionic (XH(n-1)(-)) and neutral bases (XH(n)) constituted by maingroup-element hydrides of groups 14-17 and the noble gases (i.e., group 18) along the periods 2-6. The cation affinity of the bases decreases from H(+) to CH(3)(+). To understand this trend, we have carried out quantitative bond energy decomposition analyses (EDA). Quantitative correlations are established between the MCA and PA values.

DOE Office of Scientific and Technical Information (OSTI.GOV)

Peng, Jun, E-mail: pengjun@cimm.com.cn; Zhang, Li, E-mail: zhangli@cimm.com.cn; School of Instrumentation Science and Opto-electronics Engineering, Beihang University, Beijing

The moment of inertia calibration system is developed by Changcheng Institute of Metrology and Measurement (CIMM). Rotation table - torsional spring system is used to generate angular vibration, and laser vibrometer is used to measure rotational angle and the vibration period. The object to be measured is mounted on the top of the rotation table. The air-bearing system is elaborately manufactured which reduce the friction of the angular movement and increase measurement accuracy. Heterodyne laser interferometer collaborates with column diffraction grating is used in the measurement of angular movement. Experiment shows the method of measuring oscillating angle and period introducedmore » in this paper is stable and the time resolution is high. When the air damping effect can’t be neglected in moment of inertia measurement, the periodic waveform area ratio method is introduced to calculate damping ratio and obtain the moment of inertia.« less

The Influence of Training Strategy and Physical Condition toward Forehand Drive Ability in Table Tennis

NASA Astrophysics Data System (ADS)

Langitan, F. W.

2018-02-01

The objective of this research is to find out the influence of training strategy and physical condition toward forehand drive ability in table tennis of student in faculty of sport in university of Manado, department of health and recreation education. The method used in this research was factorial 2x2 design method. The population was taken from the student of Faculty of Sport at Manado State University, Indonesia, in 2017 of 76 students for sample research. The result of this research shows that: In general, this training strategy of wall bounce gives better influence toward forehand drive ability compare with the strategy of pair training in table tennis. For the students who have strong forehand muscle, the wall bounce training strategy give better influence to their ability of forehand drive in table tennis. For the student who have weak forehand muscle, pair training strategy give better influence than wall bound training toward forehand drive ability in table tennis. There is an interaction between training using hand muscle strength to the training result in table tennis using forehand drive.

40 CFR 63.118 - Process vent provisions-periodic reporting and recordkeeping requirements.

Code of Federal Regulations, 2011 CFR

2011-07-01

... 40 Protection of Environment 9 2011-07-01 2011-07-01 false Process vent provisions-periodic..., and Wastewater § 63.118 Process vent provisions—periodic reporting and recordkeeping requirements. (a... table 3 of this subpart or specified by the Administrator in accordance with § 63.114(c) and § 63.117(e...

40 CFR 63.118 - Process vent provisions-periodic reporting and recordkeeping requirements.

Code of Federal Regulations, 2013 CFR

2013-07-01

... 40 Protection of Environment 10 2013-07-01 2013-07-01 false Process vent provisions-periodic..., and Wastewater § 63.118 Process vent provisions—periodic reporting and recordkeeping requirements. (a... table 3 of this subpart or specified by the Administrator in accordance with §§ 63.114(c) and 63.117(e...

40 CFR 63.118 - Process vent provisions-periodic reporting and recordkeeping requirements.

Code of Federal Regulations, 2012 CFR

2012-07-01

... 40 Protection of Environment 10 2012-07-01 2012-07-01 false Process vent provisions-periodic..., and Wastewater § 63.118 Process vent provisions—periodic reporting and recordkeeping requirements. (a... table 3 of this subpart or specified by the Administrator in accordance with §§ 63.114(c) and 63.117(e...

Response Characteristics of Dissolved Organic Carbon Flushing in a Subarctic Alpine Catchment

NASA Astrophysics Data System (ADS)

Carey, S. K.

2002-12-01

Dissolved organic carbon (DOC) is an important part of ecosystem-scale carbon balances and in the transport of contaminants as it interacts with other dissolved substances including trace metals. It also can be used as a surrogate hydrological tracer in permafrost regions as near-surface waters are often DOC enriched due to the presence of thick organic soils. In a small subarctic alpine catchment within the Wolf Creek Research Basin, Yukon, Canada, DOC was studied in the summer of 2001 and spring of 2002 to determine the role frost (both permanent and seasonal), snowmelt and summer storms on DOC flushing. Peak DOC concentrations occurred during the snowmelt period, approximately one week prior to peak discharge. However, peak discharge took place several weeks after snow on south facing exposures had melted. Within the hillslopes, DOC concentrations were three to five times greater in wells underlain with permafrost compared with seasonal frost. Groundwater DOC concentrations declined during snowmelt, yet remained at levels above the streamflow. After peaking, streamflow DOC concentrations declined exponentially suggesting a simple flushing mechanism, however there did not appear to be a relation between DOC and topographic position. Following melt, permafrost underlain slopes had near-surface water tables and retained elevated levels of DOC, whereas slopes without permafrost had rapidly declining water tables at upslope locations with low DOC concentrations at all positions except near-stream riparian zones. The influence of summer rainstorms on DOC was monitored on three occasions. In each case DOC peaked on the ascending limb of the runoff hydrograph and declined exponentially on the receding limb and hysteretic behavior occurred between discharge and DOC during all events. Patterns of DOC within the hillslopes and streams suggest that runoff from permafrost-underlain slopes control DOC flushing within the stream during both snowmelt and summer periods. This flushing mechanism conforms with conceptual models of runoff generation in discontinuous permafrost catchments whereby water tables within permafrost-underlain slopes rise into porous organic-layers, whereupon DOC is leached into the water and rapidly conveyed to the stream.

Interactive Multimedia Instruction for Training Self-Directed Learning Techniques

DTIC Science & Technology

2016-06-01

feedback and input on the content, format, and pedagogical approach of the lesson. This survey could be e-mailed to the principal ARI researcher for...peers in self-directed learning. Some examples of the metaphorical relationships and common examples woven into this IMI are identified in Table 1...20 Table 1 Metaphorical Relationships and Illustrations Used in Self-Directed Learning Training Military or Common Example Self-Directed

26 CFR 20.7520-1T - Valuation of annuities, unitrust interests, interests for life or terms of years, and remainder...

Code of Federal Regulations, 2010 CFR

2010-04-01

... present value determined under this section. See § 20.2031-7T(d) (and, for certain prior periods, § 20.... Section 1.642(c)-6T(e)(6) contains Table S used for determining the present value of a single life... (payout factors) and Table D (actuarial factors used in determining the present value of a remainder...

Near Hartree-Fock quality GTO basis sets for the first- and third-row atoms

NASA Technical Reports Server (NTRS)

Partridge, Harry

1989-01-01

Energy-optimized Gaussian-type-orbital (GTO) basis sets of accuracy approaching that of numerical Hartree-Fock computations are compiled for the elements of the first and third rows of the periodic table. The methods employed in calculating the sets are explained; the applicability of the sets to electronic-structure calculations is discussed; and the results are presented in tables and briefly characterized.

26 CFR 1.401(a)(9)-6 - Required minimum distributions for defined benefit plans and annuity contracts.

Code of Federal Regulations, 2014 CFR

2014-04-01

... interest rate and the Mortality Table provided in Rev. Rul. 2001-62 (2001-2 C.B. 632), illustrate the...-quarters age 79 rate. 6 Five percent discounted 18 months (1.05+(−1.5)). 7 Blended age 79/age 80 mortality... mortality tables applicable to such date); and (4) The end point of the period certain, if any, for any...

26 CFR 1.401(a)(9)-6 - Required minimum distributions for defined benefit plans and annuity contracts.

Code of Federal Regulations, 2013 CFR

2013-04-01

... interest rate and the Mortality Table provided in Rev. Rul. 2001-62 (2001-2 C.B. 632), illustrate the...-quarters age 79 rate. 6 Five percent discounted 18 months (1.05+(−1.5)). 7 Blended age 79/age 80 mortality... mortality tables applicable to such date); and (4) The end point of the period certain, if any, for any...

26 CFR 1.401(a)(9)-6 - Required minimum distributions for defined benefit plans and annuity contracts.

Code of Federal Regulations, 2012 CFR

2012-04-01

... interest rate and the Mortality Table provided in Rev. Rul. 2001-62 (2001-2 C.B. 632), illustrate the...-quarters age 79 rate. 6 Five percent discounted 18 months (1.05∧(−1.5)). 7 Blended age 79/age 80 mortality... mortality tables applicable to such date); and (4) The end point of the period certain, if any, for any...

Petroleum Quality Information System 2012 Annual Report

DTIC Science & Technology

2012-01-01

Data Summary ................................................................................. 26 Table 3- 9 : Neat Alcohol- to -Jet (ATJ8), 2012 Test... Metals : (ppm) 0.5 0.01 0.10 0.03 0.01 Alkali Metals and Metalloids: (ppm) 1.0 0.01 0.11 0.04 0.03 Hydrocarbon Composition...Alcohol- to -Jet (ATJ8), 2012 Test Results Table 3- 9 displays Neat Alcohol- to -Jet (ATJ8) results for the 2012 reporting period. Three analyses were

A periodic table for cancer.

PubMed

Epstein, Richard J

2015-01-01

Cancers exhibit differences in metastatic behavior and drug sensitivity that correlate with certain tumor-specific variables such as differentiation grade, growth rate/extent and molecular regulatory aberrations. In practice, patient management is based on the past results of clinical trials adjusted for these biomarkers. Here, it is proposed that treatment strategies could be fine-tuned upfront simply by quantifying tumorigenic spatial (cell growth) and temporal (genetic stability) control losses, as predicted by genetic defects of cell-cycle-regulatory gatekeeper and genome-stabilizing caretaker tumor suppressor genes, respectively. These differential quantifications of tumor dysfunction may in turn be used to create a tumor-specific 'periodic table' that guides rational formulation of survival-enhancing anticancer treatment strategies.

Kinase Pathway Database: An Integrated Protein-Kinase and NLP-Based Protein-Interaction Resource

PubMed Central

Koike, Asako; Kobayashi, Yoshiyuki; Takagi, Toshihisa

2003-01-01

Protein kinases play a crucial role in the regulation of cellular functions. Various kinds of information about these molecules are important for understanding signaling pathways and organism characteristics. We have developed the Kinase Pathway Database, an integrated database involving major completely sequenced eukaryotes. It contains the classification of protein kinases and their functional conservation, ortholog tables among species, protein–protein, protein–gene, and protein–compound interaction data, domain information, and structural information. It also provides an automatic pathway graphic image interface. The protein, gene, and compound interactions are automatically extracted from abstracts for all genes and proteins by natural-language processing (NLP).The method of automatic extraction uses phrase patterns and the GENA protein, gene, and compound name dictionary, which was developed by our group. With this database, pathways are easily compared among species using data with more than 47,000 protein interactions and protein kinase ortholog tables. The database is available for querying and browsing at http://kinasedb.ontology.ims.u-tokyo.ac.jp/. PMID:12799355

RNA-protein interactions in plant disease: hackers at the dinner table.

PubMed

Spanu, Pietro D

2015-09-01

Plants are the source of most of our food, whether directly or as feed for the animals we eat. Our dinner table is a trophic level we share with the microbes that also feed on the primary photosynthetic producers. Microbes that enter into close interactions with plants need to evade or suppress detection and host immunity to access nutrients. They do this by deploying molecular tools - effectors - which target host processes. The mode of action of effector proteins in these events is varied and complex. Recent data from diverse systems indicate that RNA-interacting proteins and RNA itself are delivered by eukaryotic microbes, such as fungi and oomycetes, to host plants and contribute to the establishment of successful interactions. This is evidence that pathogenic microbes can interfere with the host software. We are beginning to see that pathogenic microbes are capable of hacking into the plants' immunity programs. © 2015 The Author. New Phytologist © 2015 New Phytologist Trust.

Flexibility in data interpretation: effects of representational format

PubMed Central

Braithwaite, David W.; Goldstone, Robert L.

2013-01-01

Graphs and tables differentially support performance on specific tasks. For tasks requiring reading off single data points, tables are as good as or better than graphs, while for tasks involving relationships among data points, graphs often yield better performance. However, the degree to which graphs and tables support flexibility across a range of tasks is not well-understood. In two experiments, participants detected main and interaction effects in line graphs and tables of bivariate data. Graphs led to more efficient performance, but also lower flexibility, as indicated by a larger discrepancy in performance across tasks. In particular, detection of main effects of variables represented in the graph legend was facilitated relative to detection of main effects of variables represented in the x-axis. Graphs may be a preferable representational format when the desired task or analytical perspective is known in advance, but may also induce greater interpretive bias than tables, necessitating greater care in their use and design. PMID:24427145

Radial sets: interactive visual analysis of large overlapping sets.

PubMed

Alsallakh, Bilal; Aigner, Wolfgang; Miksch, Silvia; Hauser, Helwig

2013-12-01

In many applications, data tables contain multi-valued attributes that often store the memberships of the table entities to multiple sets such as which languages a person masters, which skills an applicant documents, or which features a product comes with. With a growing number of entities, the resulting element-set membership matrix becomes very rich of information about how these sets overlap. Many analysis tasks targeted at set-typed data are concerned with these overlaps as salient features of such data. This paper presents Radial Sets, a novel visual technique to analyze set memberships for a large number of elements. Our technique uses frequency-based representations to enable quickly finding and analyzing different kinds of overlaps between the sets, and relating these overlaps to other attributes of the table entities. Furthermore, it enables various interactions to select elements of interest, find out if they are over-represented in specific sets or overlaps, and if they exhibit a different distribution for a specific attribute compared to the rest of the elements. These interactions allow formulating highly-expressive visual queries on the elements in terms of their set memberships and attribute values. As we demonstrate via two usage scenarios, Radial Sets enable revealing and analyzing a multitude of overlapping patterns between large sets, beyond the limits of state-of-the-art techniques.

Periodic table of virus capsids: implications for natural selection and design.

PubMed

Mannige, Ranjan V; Brooks, Charles L

2010-03-04

For survival, most natural viruses depend upon the existence of spherical capsids: protective shells of various sizes composed of protein subunits. So far, general evolutionary pressures shaping capsid design have remained elusive, even though an understanding of such properties may help in rationally impeding the virus life cycle and designing efficient nano-assemblies. This report uncovers an unprecedented and species-independent evolutionary pressure on virus capsids, based on the the notion that the simplest capsid designs (or those capsids with the lowest "hexamer complexity", C(h)) are the fittest, which was shown to be true for all available virus capsids. The theories result in a physically meaningful periodic table of virus capsids that uncovers strong and overarching evolutionary pressures, while also offering geometric explanations to other capsid properties (rigidity, pleomorphy, auxiliary requirements, etc.) that were previously considered to be unrelatable properties of the individual virus. Apart from describing a universal rule for virus capsid evolution, our work (especially the periodic table) provides a language with which highly diverse virus capsids, unified only by geometry, may be described and related to each other. Finally, the available virus structure databases and other published data reiterate the predicted geometry-derived rules, reinforcing the role of geometry in the natural selection and design of virus capsids.

26 CFR 53.4958-0 - Table of contents.

Code of Federal Regulations, 2011 CFR

2011-04-01

... period. (iii) Abatement if correction during the correction period. (d) Tax paid by organization managers. (1) In general. (2) Organization manager defined. (i) In general. (ii) Special rule for certain.... (6) Due to reasonable cause. (7) Limits on liability for management. (8) Joint and several liability...

46 CFR 189.25-20 - Fire extinguishing equipment.

Code of Federal Regulations, 2012 CFR

2012-10-01

... each inspection for certification, periodic inspection, and at such other times as considered necessary... conducted. At each inspection for certification and periodic inspection the inspector shall conduct the... and semiportable fire-extinguishing systems shall be checked as noted in Table 189.25-20(a)(1). In...

46 CFR 91.25-20 - Fire-extinguishing equipment.

Code of Federal Regulations, 2011 CFR

2011-10-01

... each inspection for certification, periodic inspection and at other times necessary, the inspector will... certification and periodic inspection, the inspector will check fire-extinguishing equipment with the following... systems shall be checked as noted in Table 91.25-20(a)(1). In addition, the hand portable fire...

40 CFR 90.318 - Oxides of nitrogen analyzer calibration.

Code of Federal Regulations, 2010 CFR

2010-07-01

... chemiluminescent oxides of nitrogen analyzer as described in this section. (b) Initial and Periodic Interference... and periodic calibration. Prior to its initial use and monthly thereafter, or within one month prior... following table). Example calibration points (%) Acceptable for calibration? 20, 30, 40, 50, 60, 70 No...

46 CFR 189.25-20 - Fire extinguishing equipment.

Code of Federal Regulations, 2014 CFR

2014-10-01

... each inspection for certification, periodic inspection, and at such other times as considered necessary... conducted. At each inspection for certification and periodic inspection the inspector shall conduct the... and semiportable fire-extinguishing systems shall be checked as noted in Table 189.25-20(a)(1). In...

46 CFR 189.25-20 - Fire extinguishing equipment.

Code of Federal Regulations, 2013 CFR

2013-10-01

... each inspection for certification, periodic inspection, and at such other times as considered necessary... conducted. At each inspection for certification and periodic inspection the inspector shall conduct the... and semiportable fire-extinguishing systems shall be checked as noted in Table 189.25-20(a)(1). In...

40 CFR 60.674 - Monitoring of operations.

Code of Federal Regulations, 2013 CFR

2013-07-01

... monthly periodic inspections to check that water is flowing to discharge spray nozzles in the wet... repeat testing requirement specified in Table 3 of this subpart provided that the affected facility meets... affected facility conducts periodic inspections of the upstream water spray(s) that are responsible for...

46 CFR 91.25-20 - Fire extinguishing equipment.

Code of Federal Regulations, 2013 CFR

2013-10-01

... each inspection for certification, periodic inspection and at other times necessary, the inspector will... certification and periodic inspection, the inspector will check fire-extinguishing equipment with the following... systems shall be checked as noted in Table 91.25-20(a)(1). In addition, the hand portable fire...

46 CFR 189.25-20 - Fire-extinguishing equipment.

Code of Federal Regulations, 2010 CFR

2010-10-01

... each inspection for certification, periodic inspection, and at such other times as considered necessary... conducted. At each inspection for certification and periodic inspection the inspector shall conduct the... and semiportable fire-extinguishing systems shall be checked as noted in Table 189.25-20(a)(1). In...

40 CFR 60.674 - Monitoring of operations.

Code of Federal Regulations, 2012 CFR

2012-07-01

... monthly periodic inspections to check that water is flowing to discharge spray nozzles in the wet... repeat testing requirement specified in Table 3 of this subpart provided that the affected facility meets... affected facility conducts periodic inspections of the upstream water spray(s) that are responsible for...

40 CFR 91.318 - Oxides of nitrogen analyzer calibration.

Code of Federal Regulations, 2011 CFR

2011-07-01

... nitrogen analyzer as described in this section. (b) Initial and periodic interference. Prior to its... is required. (c) Initial and periodic calibration. Prior to its introduction into service, and... 80 percent of the 10 to 90 percent range (64 percent) is required (see following table). Example...

40 CFR 91.318 - Oxides of nitrogen analyzer calibration.

Code of Federal Regulations, 2013 CFR

2013-07-01

... nitrogen analyzer as described in this section. (b) Initial and periodic interference. Prior to its... is required. (c) Initial and periodic calibration. Prior to its introduction into service, and... 80 percent of the 10 to 90 percent range (64 percent) is required (see following table). Example...

40 CFR 90.318 - Oxides of nitrogen analyzer calibration.

Code of Federal Regulations, 2011 CFR

2011-07-01

... chemiluminescent oxides of nitrogen analyzer as described in this section. (b) Initial and Periodic Interference... and periodic calibration. Prior to its initial use and monthly thereafter, or within one month prior... following table). Example calibration points (%) Acceptable for calibration? 20, 30, 40, 50, 60, 70 No...

46 CFR 91.25-20 - Fire extinguishing equipment.

Code of Federal Regulations, 2014 CFR

2014-10-01

... each inspection for certification, periodic inspection and at other times necessary, the inspector will... certification and periodic inspection, the inspector will check fire-extinguishing equipment with the following... systems shall be checked as noted in Table 91.25-20(a)(1). In addition, the hand portable fire...

46 CFR 91.25-20 - Fire-extinguishing equipment.

Code of Federal Regulations, 2010 CFR

2010-10-01

... each inspection for certification, periodic inspection and at other times necessary, the inspector will... certification and periodic inspection, the inspector will check fire-extinguishing equipment with the following... systems shall be checked as noted in Table 91.25-20(a)(1). In addition, the hand portable fire...

46 CFR 189.25-20 - Fire-extinguishing equipment.

Code of Federal Regulations, 2011 CFR

2011-10-01

... each inspection for certification, periodic inspection, and at such other times as considered necessary... conducted. At each inspection for certification and periodic inspection the inspector shall conduct the... and semiportable fire-extinguishing systems shall be checked as noted in Table 189.25-20(a)(1). In...

40 CFR 91.318 - Oxides of nitrogen analyzer calibration.

Code of Federal Regulations, 2010 CFR

2010-07-01

... nitrogen analyzer as described in this section. (b) Initial and periodic interference. Prior to its... is required. (c) Initial and periodic calibration. Prior to its introduction into service, and... 80 percent of the 10 to 90 percent range (64 percent) is required (see following table). Example...

40 CFR 60.674 - Monitoring of operations.

Code of Federal Regulations, 2014 CFR

2014-07-01

... monthly periodic inspections to check that water is flowing to discharge spray nozzles in the wet... repeat testing requirement specified in Table 3 of this subpart provided that the affected facility meets... affected facility conducts periodic inspections of the upstream water spray(s) that are responsible for...

40 CFR 90.318 - Oxides of nitrogen analyzer calibration.

Code of Federal Regulations, 2013 CFR

2013-07-01

... chemiluminescent oxides of nitrogen analyzer as described in this section. (b) Initial and Periodic Interference... and periodic calibration. Prior to its initial use and monthly thereafter, or within one month prior... following table). Example calibration points (%) Acceptable for calibration? 20, 30, 40, 50, 60, 70 No...

26 CFR 1.817A-0 - Table of contents.

Code of Federal Regulations, 2011 CFR

2011-04-01

... period. (5) Examples. (c) Applicable interest rates for equity-indexed modified guaranteed contracts... captions that appear in section § 1.817A-1: § 1.817A-1Certain modified guaranteed contracts. (a) Definitions. (1) Modified guaranteed contract. (2) Temporary guarantee period. (3) Equity-indexed modified...

Elegant Grapheme-Phoneme Correspondence: A Periodic Chart and Singularity Generalization Unify Decoding

ERIC Educational Resources Information Center

Gates, Louis

2018-01-01

The accompanying article introduces highly transparent grapheme-phoneme relationships embodied within a Periodic table of decoding cells, which arguably presents the quintessential transparent decoding elements. The study then folds these cells into one highly transparent but simply stated singularity generalization--this generalization unifies…

On Determining the Rise, Size, and Duration Classes of a Sunspot Cycle

NASA Astrophysics Data System (ADS)

Wilson, Robert M.; Hathaway, David H.; Reichmann, Edwin J.

1996-09-01

The behavior of ascent duration, maximum amplitude, and period for cycles 1 to 21 suggests that they are not mutually independent. Analysis of the resultant three-dimensional contingency table for cycles divided according to rise time (ascent duration), size (maximum amplitude), and duration (period) yields a chi-square statistic (= 18.59) that is larger than the test statistic (= 9.49 for 4 degrees-of-freedom at the 5-percent level of significance), thereby, inferring that the null hypothesis (mutual independence) can be rejected. Analysis of individual 2 by 2 contingency tables (based on Fisher's exact test) for these parameters shows that, while ascent duration is strongly related to maximum amplitude in the negative sense (inverse correlation) - the Waldmeier effect, it also is related (marginally) to period, but in the positive sense (direct correlation). No significant (or marginally significant) correlation is found between period and maximum amplitude. Using cycle 22 as a test case, we show that by the 12th month following conventional onset, cycle 22 appeared highly likely to be a fast-rising, larger-than-average-size cycle. Because of the inferred correlation between ascent duration and period, it also seems likely that it will have a period shorter than average length.

On Determining the Rise, Size, and Duration Classes of a Sunspot Cycle

NASA Technical Reports Server (NTRS)

Wilson, Robert M.; Hathaway, David H.; Reichmann, Edwin J.

1996-01-01

The behavior of ascent duration, maximum amplitude, and period for cycles 1 to 21 suggests that they are not mutually independent. Analysis of the resultant three-dimensional contingency table for cycles divided according to rise time (ascent duration), size (maximum amplitude), and duration (period) yields a chi-square statistic (= 18.59) that is larger than the test statistic (= 9.49 for 4 degrees-of-freedom at the 5-percent level of significance), thereby, inferring that the null hypothesis (mutual independence) can be rejected. Analysis of individual 2 by 2 contingency tables (based on Fisher's exact test) for these parameters shows that, while ascent duration is strongly related to maximum amplitude in the negative sense (inverse correlation) - the Waldmeier effect, it also is related (marginally) to period, but in the positive sense (direct correlation). No significant (or marginally significant) correlation is found between period and maximum amplitude. Using cycle 22 as a test case, we show that by the 12th month following conventional onset, cycle 22 appeared highly likely to be a fast-rising, larger-than-average-size cycle. Because of the inferred correlation between ascent duration and period, it also seems likely that it will have a period shorter than average length.

Bouncing ball problem: stability of the periodic modes.

PubMed

Barroso, Joaquim J; Carneiro, Marcus V; Macau, Elbert E N

2009-02-01

Exploring all its ramifications, we give an overview of the simple yet fundamental bouncing ball problem, which consists of a ball bouncing vertically on a sinusoidally vibrating table under the action of gravity. The dynamics is modeled on the basis of a discrete map of difference equations, which numerically solved fully reveals a rich variety of nonlinear behaviors, encompassing irregular nonperiodic orbits, subharmonic and chaotic motions, chattering mechanisms, and also unbounded nonperiodic orbits. For periodic motions, the corresponding conditions for stability and bifurcation are determined from analytical considerations of a reduced map. Through numerical examples, it is shown that a slight change in the initial conditions makes the ball motion switch from periodic to chaotic orbits bounded by a velocity strip v=+/-Gamma(1-epsilon) , where Gamma is the nondimensionalized shaking acceleration and epsilon the coefficient of restitution which quantifies the amount of energy lost in the ball-table collision.

DOE Office of Scientific and Technical Information (OSTI.GOV)

Schipper, L.; Ketoff, A.; Meyers, S.

This summary report presents information on the end-uses of energy in the residential sector of seven major OECD countries over the period 1960-1978. Much of the information contained herein has never been published before. We present data on energy consumption by energy type and end-use for three to five different years for each country. Each year table is complemented by a set of indicators, which are assembled for the entire 20-year period at the end of each country listing. Finally, a set of key indicators from each country is displayed together in a table, allowing comparison for three periods: earlymore » (1960-63), pre-embargo (1970-73), and recent (1975-78). Analysis of these results, smoothing and interpolation of the data, addition of further data, and analytical comparison of in-country and cross-country trends will follow in the next phase of our work.« less

Electrical Impedance Imaging for Early Detection of Breast Cancer for Young Women

DTIC Science & Technology

2013-12-01

replacement therapy, prior biopsy, frequency of menstrual periods 16. SECURITY CLASSIFICATION OF: 17. LIMITATION OF ABSTRACT 18. NUMBER OF PAGES...separate manual remediation databases were being used (one of which was at one point a copy of the other with some overlap of corrected values), there...in file" during manual remediation) . The Visits and Exams tables both had date variables and although the Menstrual History and All Findings tables

26 CFR 1.101-7 - Mortality table used to determine exclusion for deferred payments of life insurance proceeds.

Code of Federal Regulations, 2013 CFR

2013-04-01

... insured's death. If A is 59 years of age at the time of the insured's death, the period with respect to... reference to the interest rate used by the insurance company and the mortality table set forth in § 1.72-7(c... beneficiary, A, at the death of the insured. Upon the insured's death, however, A selects an option for the...

26 CFR 1.101-7 - Mortality table used to determine exclusion for deferred payments of life insurance proceeds.

Code of Federal Regulations, 2011 CFR

2011-04-01

... insured's death. If A is 59 years of age at the time of the insured's death, the period with respect to... reference to the interest rate used by the insurance company and the mortality table set forth in § 1.72-7(c... beneficiary, A, at the death of the insured. Upon the insured's death, however, A selects an option for the...

26 CFR 1.101-7 - Mortality table used to determine exclusion for deferred payments of life insurance proceeds.

Code of Federal Regulations, 2012 CFR

2012-04-01

... insured's death. If A is 59 years of age at the time of the insured's death, the period with respect to... reference to the interest rate used by the insurance company and the mortality table set forth in § 1.72-7(c... beneficiary, A, at the death of the insured. Upon the insured's death, however, A selects an option for the...

26 CFR 1.101-7 - Mortality table used to determine exclusion for deferred payments of life insurance proceeds.

Code of Federal Regulations, 2014 CFR

2014-04-01

... insured's death. If A is 59 years of age at the time of the insured's death, the period with respect to... reference to the interest rate used by the insurance company and the mortality table set forth in § 1.72-7(c... beneficiary, A, at the death of the insured. Upon the insured's death, however, A selects an option for the...

26 CFR 1.101-7 - Mortality table used to determine exclusion for deferred payments of life insurance proceeds.

Code of Federal Regulations, 2010 CFR

2010-04-01

... insured's death. If A is 59 years of age at the time of the insured's death, the period with respect to... reference to the interest rate used by the insurance company and the mortality table set forth in § 1.72-7(c... beneficiary, A, at the death of the insured. Upon the insured's death, however, A selects an option for the...

The response of soil organic carbon of a rich fen peatland in interior Alaska to projected climate change

USGS Publications Warehouse

Fan, Zhaosheng; McGuire, Anthony David; Turetsky, Merritt R.; Harden, Jennifer W.; Waddington, James Michael; Kane, Evan S.

2013-01-01

It is important to understand the fate of carbon in boreal peatland soils in response to climate change because a substantial change in release of this carbon as CO2 and CH4 could influence the climate system. The goal of this research was to synthesize the results of a field water table manipulation experiment conducted in a boreal rich fen into a process-based model to understand how soil organic carbon (SOC) of the rich fen might respond to projected climate change. This model, the peatland version of the dynamic organic soil Terrestrial Ecosystem Model (peatland DOS-TEM), was calibrated with data collected during 2005–2011 from the control treatment of a boreal rich fen in the Alaska Peatland Experiment (APEX). The performance of the model was validated with the experimental data measured from the raised and lowered water-table treatments of APEX during the same period. The model was then applied to simulate future SOC dynamics of the rich fen control site under various CO2 emission scenarios. The results across these emissions scenarios suggest that the rate of SOC sequestration in the rich fen will increase between year 2012 and 2061 because the effects of warming increase heterotrophic respiration less than they increase carbon inputs via production. However, after 2061, the rate of SOC sequestration will be weakened and, as a result, the rich fen will likely become a carbon source to the atmosphere between 2062 and 2099. During this period, the effects of projected warming increase respiration so that it is greater than carbon inputs via production. Although changes in precipitation alone had relatively little effect on the dynamics of SOC, changes in precipitation did interact with warming to influence SOC dynamics for some climate scenarios.

Vadose zone controls on damping of climate-induced transient recharge fluxes in U.S. agroecosystems

NASA Astrophysics Data System (ADS)

Gurdak, Jason

2017-04-01

Understanding the physical processes in the vadose zone that link climate variability with transient recharge fluxes has particular relevance for the sustainability of groundwater-supported irrigated agriculture and other groundwater-dependent ecosystems. Natural climate variability on interannual to multidecadal timescales has well-documented influence on precipitation, evapotranspiration, soil moisture, infiltration flux, and can augment or diminish human stresses on water resources. Here the behavior and damping depth of climate-induced transient water flux in the vadose zone is explored. The damping depth is the depth in the vadose zone that the flux variation damps to 5% of the land surface variation. Steady-state recharge occurs when the damping depth is above the water table, and transient recharge occurs when the damping depth is below the water table. Findings are presented from major agroecosystems of the United States (U.S.), including the High Plains, Central Valley, California Coastal Basin, and Mississippi Embayment aquifer systems. Singular spectrum analysis (SSA) is used to identify quasi-periodic signals in precipitation and groundwater time series that are coincident with the Arctic Oscillation (AO) (6-12 mo cycle), Pacific/North American oscillation (PNA) (<1-4 yr cycle), El Niño/Southern Oscillation (ENSO) (2-7 yr cycle), North Atlantic Oscillation (NAO) (3-6 yr cycle), Pacific Decadal Oscillation (PDO) (15-30 yr cycle), and Atlantic Multidecadal Oscillation (AMO) (50-70 yr cycle). SSA results indicate that nearly all of the quasi-periodic signals in the precipitation and groundwater levels have a statistically significant lag correlation (95% confidence interval) with the AO, PNA, ENSO, NAO, PDO, and AMO indices. Results from HYDRUS-1D simulations indicate that transient water flux through the vadose zone are controlled by highly nonlinear interactions between mean infiltration flux and infiltration period related to the modes of climate variability and the local soil textures, layering, and depth to the water table. Simulation results for homogeneous profiles generally show that shorter-period climate oscillations, smaller mean fluxes, and finer-grained soil textures generally produce damping depths closer to land surface. Simulation results for layered soil textures indicate more complex responses in the damping depth, including the finding that finer-textured layers in a coarser soil profile generally result in damping depths closer to land surface, while coarser-textured layers in coarser soil profile result in damping depths deeper in the vadose zone. Findings from this study improve understanding of how vadose zone properties influences transient recharge flux and damp climate variability signals in groundwater systems, and have important implications for sustainable management of groundwater resources and coupled agroecosystems under future climate variability and change.

DELPHI: An introduction to output layout and data content

DOE Office of Scientific and Technical Information (OSTI.GOV)

Smith, C.F.

1994-08-16

DELPHI was the data summary and interpretation code used by gas diagnostics personnel during the period from 1968 through 1986. It was written by Floyd Momyer, and went through several revisions during its period of use. Described here is the final version, which provided the most extensive set of summary tables. Earlier versions of the code lacked some of the capabilities of the final version, but what they did include was of substantially the same format. DELPHI was run against most available input decks in the mid 1980s. Microfiche and hardcopy output were generated. Both now reside in our archives.more » These reruns used modified input decks, which may not have had the proper {open_quotes}trigger{close_quotes} to instruct DELPHI to output some tables. These tables could, therefore be missing from a printout even though the necessary data was present. Also, modifications to DELPHI did, in some instances, eliminate DELPHIs` capability to correctly output some of the earlier optional tables. This monologue is intended to compliment the archived printout, and to provide enough insight so that someone unfamiliar with the techniques of Gas Diagnostics can retrieve the results at some future date. DELPHI last ran on the CDC-7600 machines, and was not converted to run on the Crays when the CDC-7600`s were decommissioned. DELPHI accepted data from various analytical systems, set up data summary tables, and combined preshot tracer and detector data with these results to calculate the total production of measured species and the indicated fission yields and detector conversions.« less

Dynamics of soil biogeochemical gas emissions shaped by remolded aggregate sizes and carbon configurations under hydration cycles.

PubMed

Ebrahimi, Ali; Or, Dani

2018-01-01

Changes in soil hydration status affect microbial community dynamics and shape key biogeochemical processes. Evidence suggests that local anoxic conditions may persist and support anaerobic microbial activity in soil aggregates (or in similar hot spots) long after the bulk soil becomes aerated. To facilitate systematic studies of interactions among environmental factors with biogeochemical emissions of CO 2 , N 2 O and CH 4 from soil aggregates, we remolded silt soil aggregates to different sizes and incorporated carbon at different configurations (core, mixed, no addition). Assemblies of remolded soil aggregates of three sizes (18, 12, and 6 mm) and equal volumetric proportions were embedded in sand columns at four distinct layers. The water table level in each column varied periodically while obtaining measurements of soil GHG emissions for the different aggregate carbon configurations. Experimental results illustrate that methane production required prolonged inundation and highly anoxic conditions for inducing measurable fluxes. The onset of unsaturated conditions (lowering water table) resulted in a decrease in CH 4 emissions while temporarily increasing N 2 O fluxes. Interestingly, N 2 O fluxes were about 80% higher form aggregates with carbon placement in center (anoxic) core compared to mixed carbon within aggregates. The fluxes of CO 2 were comparable for both scenarios of carbon sources. These experimental results highlight the importance of hydration dynamics in activating different GHG production and affecting various transport mechanisms about 80% of total methane emissions during lowering water table level are attributed to physical storage (rather than production), whereas CO 2 emissions (~80%) are attributed to biological activity. A biophysical model for microbial activity within soil aggregates and profiles provides a means for results interpretation and prediction of trends within natural soils under a wide range of conditions. © 2017 John Wiley & Sons Ltd.

Terrestrial effects of high energy cosmic rays

NASA Astrophysics Data System (ADS)

Atri, Dimitra

On geological timescales, the Earth is likely to be exposed to higher than the usual flux of high energy cosmic rays (HECRs) from astrophysical sources such as nearby supernovae, gamma ray bursts or by galactic shocks. These high-energy particles strike the Earth's atmosphere, initiating an extensive air shower. As the air shower propagates deeper, it ionizes the atmosphere by producing charged secondary particles and photons. Increased ionization leads to changes in atmospheric chemistry, resulting in ozone depletion. This increases the flux of solar UVB radiation at the surface, which is potentially harmful to living organisms. Increased ionization affects the global electrical circuit, which could enhance the low-altitude cloud formation rate. Secondary particles such as muons and thermal neutrons produced as a result of hadronic interactions of the primary cosmic rays with the atmosphere are able to reach the ground, enhancing the biological radiation dose. The muon flux dominates the radiation dose from cosmic rays causing damage to DNA and an increase in mutation rates and cancer, which can have serious biological implications for surface and sub-surface life. Using CORSIKA, we perform massive computer simulations and construct lookup tables for 10 GeV - 1 PeV primaries, which can be used to quantify these effects from enhanced cosmic ray exposure to any astrophysical source. These tables are freely available to the community and can be used for other studies. We use these tables to study the terrestrial implications of galactic shock generated by the infall of our galaxy toward the Virgo cluster. Increased radiation dose from muons could be a possible mechanism explaining the observed periodicity in biodiversity in paleobiology databases.

Terrestrial Effects of High Energy Cosmic Rays

NASA Astrophysics Data System (ADS)

Atri, Dimitra

2011-01-01

On geological timescales, the Earth is likely to be exposed to an increased flux of high energy cosmic rays (HECRs) from astrophysical sources such as nearby supernovae, gamma ray bursts or by galactic shocks. These high-energy particles strike the Earth's atmosphere initiating an extensive air shower. As the air shower propagates deeper, it ionizes the atmosphere by producing charged secondary particles. Increased ionization could lead to changes in atmospheric chemistry, resulting in ozone depletion. This could increase the flux of solar UVB radiation at the surface, which is potentially harmful to living organisms. Increased ionization affects the global electrical circuit can could possibly enhance the low-altitude cloud formation rate. Secondary particles such as muons and thermal neutrons produced as a result of nuclear interactions are able to reach the ground, enhancing the biological radiation dose. The muon flux dominates radiation dose from cosmic rays causing DNA damage and increase in the mutation rates, which can have serious biological implications for terrestrial and sub-terrestrial life. This radiation dose is an important constraint on the habitability of a planet. Using CORSIKA, we perform massive computer simulations and construct lookup tables from 10 GeV - 1 PeV primaries (1 PeV - 0.1 ZeV in progress), which can be used to quantify these effects. These tables are freely available to the community and can be used for other studies, not necessarily relevant to Astrobiology. We use these tables to study the terrestrial implications of galactic shock generated by the infall of our galaxy toward the Virgo cluster. This could be a possible mechanism explaining the observed periodicity in biodiversity in paleobiology databases.

Linking Water Table Dynamics to Carbon Cycling in Artificial Soil Column Incubations

NASA Astrophysics Data System (ADS)

Geertje, Pronk; Adrian, Mellage; Tatjana, Milojevic; Fereidoun, Rezanezhad; Cappellen Philippe, Van

2016-04-01

The biogeochemistry of wetlands soils is closely tied to their hydrology. Water table fluctuations that cause flooding and drying of these systems may lead to enhanced degradation of organic matter and release of greenhouse gasses (e.g. CO2, CH4) to the atmosphere. However, predicting the influence of water table fluctuations on the biogeochemical functioning of soils requires an understanding of the interactions of soil hydrology with biogeochemical and microbial processes. To determine the effects of water table dynamics on carbon cycling, we are carrying out state-of-the-art automated soil column experiments with fully integrated monitoring of hydro-bio-geophysical process variables under both constant and oscillating water table conditions. An artificial, homogeneous mixture consisting of minerals and organic matter is used to provide a well-defined starting material. The artificial soils are composed of quartz sand, montmorillonite, goethite and humus from a forested riparian zone, from which we also extracted the microbial inoculum added to the soil mixture. The artificial soils are packed into 60 cm high, 7.5 cm wide columns. In the currently ongoing experiment, three replicate columns are incubated while keeping the water table constant water at mid-depth, while another three columns alternate between drained and saturated conditions. Micro-sensors installed at different depths below the soil surface record time-series redox potentials (Eh) varying between oxidizing (~+700 mV) and reducing (~-200 mV) conditions. Continuous O2 levels throughout the soil columns are monitored using high-resolution, luminescence-based, Multi Fiber Optode (MuFO) microsensors. Pore waters are collected periodically with MicroRhizon samplers from different depths, and analyzed for pH, EC, dissolved inorganic and organic carbon and ion/cation compositions. These measurements allow us to track the changes in pore water geochemistry and relate them to differences in carbon cycling between the contrasting water table regimes. Particular attention is given to the mobilization and redistribution of iron from the initially homogeneously distributed goethite. In addition, small solid-phase samples are collected monthly from the saturated and unsaturated zones of the soil columns to characterize the microbial communities and changes in soil microstructure and organo-mineral associations. Headspace gas measurements are used to derive the effluxes of CO2 and CH4 during the experiment. Together, the experimental data will provide a comprehensive picture of the early development of the soil and the accompanying establishment of biogeochemical gradients under dynamic hydrological conditions. They will allow us to relate the degradation of soil organic matter and greenhouse gas emissions to the saturation conditions and redox chemistry under controlled conditions. The experiment is in progress with an expected total duration of 6 months.

Interacting Compasses

ERIC Educational Resources Information Center

Riveros, Hector G.; Betancourt, Julian

2009-01-01

The use of multiple compasses to map and visualize magnetic fields is well-known. The magnetic field exerts a torque on the compasses aligning them along the lines of force. Some science museums show the field of a magnet using a table with many compasses in a closely packed arrangement. However, the very interesting interactions that occur…

40 CFR Table 8 to Subpart Uuuuu of... - Reporting Requirements

Code of Federal Regulations, 2014 CFR

2014-07-01

... (CONTINUED) National Emission Standards for Hazardous Air Pollutants: Coal- and Oil-Fired Electric Utility... period. If there were no periods during which the CMSs, including continuous emissions monitoring system, and operating parameter monitoring systems, were out-of-control as specified in § 63.8(c)(7), a...

40 CFR Table 8 to Subpart Uuuuu of... - Reporting Requirements

Code of Federal Regulations, 2013 CFR

2013-07-01

... (CONTINUED) National Emission Standards for Hazardous Air Pollutants: Coal- and Oil-Fired Electric Utility... period. If there were no periods during which the CMSs, including continuous emissions monitoring system, and operating parameter monitoring systems, were out-of-control as specified in § 63.8(c)(7), a...

49 CFR 180.217 - Requalification requirements for MEGCs.

Code of Federal Regulations, 2014 CFR

2014-10-01

... Requalification requirements for MEGCs. (a) Periodic inspections. Each MEGC must be given an initial visual...) The 5-year periodic inspection must include an external examination of the structure, the pressure... specified in Table 1 in § 180.207. (b) Exceptional inspection and test. If a MEGC shows evidence of damaged...

49 CFR 180.217 - Requalification requirements for MEGCs.

Code of Federal Regulations, 2012 CFR

2012-10-01

... Requalification requirements for MEGCs. (a) Periodic inspections. Each MEGC must be given an initial visual...) The 5-year periodic inspection must include an external examination of the structure, the pressure... specified in Table 1 in § 180.207. (b) Exceptional inspection and test. If a MEGC shows evidence of damaged...

49 CFR 180.217 - Requalification requirements for MEGCs.

Code of Federal Regulations, 2010 CFR

2010-10-01

... Requalification requirements for MEGCs. (a) Periodic inspections. Each MEGC must be given an initial visual...) The 5-year periodic inspection must include an external examination of the structure, the pressure... specified in Table 1 in § 180.207. (b) Exceptional inspection and test. If a MEGC shows evidence of damaged...

49 CFR 180.217 - Requalification requirements for MEGCs.

Code of Federal Regulations, 2013 CFR

2013-10-01

... Requalification requirements for MEGCs. (a) Periodic inspections. Each MEGC must be given an initial visual...) The 5-year periodic inspection must include an external examination of the structure, the pressure... specified in Table 1 in § 180.207. (b) Exceptional inspection and test. If a MEGC shows evidence of damaged...

49 CFR 180.217 - Requalification requirements for MEGCs.

Code of Federal Regulations, 2011 CFR

2011-10-01

... Requalification requirements for MEGCs. (a) Periodic inspections. Each MEGC must be given an initial visual...) The 5-year periodic inspection must include an external examination of the structure, the pressure... specified in Table 1 in § 180.207. (b) Exceptional inspection and test. If a MEGC shows evidence of damaged...

Topological Crystalline Superconductivity in Locally Noncentrosymmetric Multilayer Superconductors

NASA Astrophysics Data System (ADS)

Yoshida, Tomohiro; Sigrist, Manfred; Yanase, Youichi

2015-07-01

Topological crystalline superconductivity in locally noncentrosymmetric multilayer superconductors (SCs) is proposed. We study the odd-parity pair-density wave (PDW) state induced by the spin-singlet pairing interaction through the spin-orbit coupling. It is shown that the PDW state is a topological crystalline SC protected by a mirror symmetry, although it is topologically trivial according to the classification based on the standard topological periodic table. The topological property of the mirror subsectors is intuitively explained by adiabatically changing the Bogoliubov-de Gennes Hamiltonian. A subsector of the bilayer PDW state reduces to the two-dimensional noncentrosymmetric SC, while a subsector of the trilayer PDW state is topologically equivalent to the spinless p -wave SC. Chiral Majorana edge modes in trilayers can be realized without Cooper pairs in the spin-triplet channel and chemical potential tuning.

Topological Crystalline Superconductivity in Locally Noncentrosymmetric Multilayer Superconductors.

PubMed

Yoshida, Tomohiro; Sigrist, Manfred; Yanase, Youichi

2015-07-10

Topological crystalline superconductivity in locally noncentrosymmetric multilayer superconductors (SCs) is proposed. We study the odd-parity pair-density wave (PDW) state induced by the spin-singlet pairing interaction through the spin-orbit coupling. It is shown that the PDW state is a topological crystalline SC protected by a mirror symmetry, although it is topologically trivial according to the classification based on the standard topological periodic table. The topological property of the mirror subsectors is intuitively explained by adiabatically changing the Bogoliubov-de Gennes Hamiltonian. A subsector of the bilayer PDW state reduces to the two-dimensional noncentrosymmetric SC, while a subsector of the trilayer PDW state is topologically equivalent to the spinless p-wave SC. Chiral Majorana edge modes in trilayers can be realized without Cooper pairs in the spin-triplet channel and chemical potential tuning.

LaNi{sub 5}-based metal hydride electrode in Ni-MH rechargeable cells

DOE Office of Scientific and Technical Information (OSTI.GOV)

Bugga, R.V.; Fultz, B.; Bowman, R.

1999-03-30

An at least ternary metal alloy of the formula AB{sub (Z-Y)}X{sub (Y)} is disclosed. In this formula, A is selected from the rare earth elements, B is selected from the elements of Groups 8, 9, and 10 of the Periodic Table of the Elements, and X includes at least one of the following: antimony, arsenic, germanium, tin or bismuth. Z is greater than or equal to 4.8 and less than or equal to 6.0. Y is greater than 0 and less than 1. Ternary or higher-order substitutions to the base AB{sub 5} alloys that form strong kinetic interactions with themore » predominant metals in the base metal hydride are used to form metal alloys with high structural integrity after multiple cycles of hydrogen sorption. 16 figs.« less

LaNi.sub.5 is-based metal hydride electrode in Ni-MH rechargeable cells

DOEpatents

Bugga, Ratnakumar V.; Fultz, Brent; Bowman, Robert; Surampudi, Subra Rao; Witham, Charles K.; Hightower, Adrian

1999-01-01

An at least ternary metal alloy of the formula AB.sub.(Z-Y) X.sub.(Y) is disclosed. In this formula, A is selected from the rare earth elements, B is selected from the elements of Groups 8, 9, and 10 of the Periodic Table of the Elements, and X includes at least one of the following: antimony, arsenic, germanium, tin or bismuth. Z is greater than or equal to 4.8 and less than or equal to 6.0. Y is greater than 0 and less than 1. Ternary or higher-order substitutions to the base AB.sub.5 alloys that form strong kinetic interactions with the predominant metals in the base metal hydride are used to form metal alloys with high structural integrity after multiple cycles of hydrogen sorption.

LaNi{sub 5}-based metal hydride electrode in Ni-MH rechargeable cells

DOEpatents

Bugga, R.V.; Fultz, B.; Bowman, R.; Surampudi, S.R.; Witham, C.K.; Hightower, A.

1999-03-30

An at least ternary metal alloy of the formula AB{sub (Z-Y)}X{sub (Y)} is disclosed. In this formula, A is selected from the rare earth elements, B is selected from the elements of Groups 8, 9, and 10 of the Periodic Table of the Elements, and X includes at least one of the following: antimony, arsenic, germanium, tin or bismuth. Z is greater than or equal to 4.8 and less than or equal to 6.0. Y is greater than 0 and less than 1. Ternary or higher-order substitutions to the base AB{sub 5} alloys that form strong kinetic interactions with the predominant metals in the base metal hydride are used to form metal alloys with high structural integrity after multiple cycles of hydrogen sorption. 16 figs.

A practical hybrid model of application, integration, and competencies at interactive table conferences in histology (ITCH).

PubMed

Ettarh, Rajunor

2016-05-06

Significant changes have been implemented in the way undergraduate medical education is structured. One of the challenges for component courses such as histology in medical and dental curricula is to restructure and deliver training within new frameworks. This article describes the process of aligning the purpose and experience in histology laboratory to the goal of applying knowledge gained to team-based medical practice at Tulane University School of Medicine. Between 2011 and 2015, 711 medical students took either a traditional laboratory-based histology course (353 students) or a team-based hybrid histology course with active learning in laboratory (358 students). The key difference was in the laboratory component of the hybrid course - interactive table conferences in histology-during which students developed new competencies by working in teams, reviewing images, solving problems by applying histology concepts, and sharing learning. Content, faculty and online resources for microscopy were the same in both courses. More student-student and student-faculty interactions were evident during the hybrid course but student evaluation ratings and grades showed reductions following introduction of table conferences when compared to previous ratings. However, outcomes at National Board of Medical Examiners(®) (NBME(®) ) Subject Examination in Histology and Cell Biology showed significant improvement (72.4 ± 9.04 and 76.44 ± 9.36 for percent correct answers, traditional and hybrid courses, respectively, P < 0.0001). This model of table conferences to augment the traditional histology laboratory experience exemplifies the extent that restructuring enhancements can be used in currently taught courses in the undergraduate medical curriculum. Anat Sci Educ 9: 286-294. © 2016 American Association of Anatomists. © 2016 American Association of Anatomists.

Effects of soil water table regime on tree community species richness and structure of alluvial forest fragments in Southeast Brazil.

PubMed

Silva, A C; Higuchi, P; van den Berg, E

2010-08-01

In order to determine the influence of soil water table fluctuation on tree species richness and structure of alluvial forest fragments, 24 plots were allocated in a point bar forest and 30 plots in five forest fragments located in a floodplain, in the municipality of São Sebastião da Bela Vista, Southeast Brazil, totalizing 54, 10 X 20 m, plots. The information recorded in each plot were the soil water table level, diameter at breast height (dbh), total height and botanical identity off all trees with dbh > 5 cm. The water table fluctuation was assessed through 1 m deep observation wells in each plot. Correlations analysis indicated that sites with shallower water table in the flooding plains had a low number of tree species and high tree density. Although the water table in the point bar remained below the wells during the study period, low tree species richness was observed. There are other events taking place within the point bar forest that assume a high ecological importance, such as the intensive water velocity during flooding and sedimentation processes.

Annual safe groundwater yield in a semiarid basin using combination of water balance equation and water table fluctuation

NASA Astrophysics Data System (ADS)

Rezaei, Abolfazl; Mohammadi, Zargham

2017-10-01

The safe groundwater yield plays a major role in the appropriate management of groundwater systems, particularly in (semi-)arid areas like Iran. This study incorporates both the water balance equation and the water table fluctuation to estimate the annual safe yield of the unconfined aquifer in the eastern part of the Kaftar Lake, an Iranian semiarid region. Firstly, the water balance year 2002-03, owing same water table elevation at the beginning and year-end, was chosen from the monthly representative groundwater hydrograph of the aquifer to be taken into account as a basic water year for determining the safe yield. Then the ratio of the total groundwater pumping to the annual groundwater recharge in the selected water balance year together with the quantity of total recharge occurred in the wet period (October to May) of the year of interest were applied to evaluate the annual safe yield at the initiation of the dry period (June to September) of the year of interest. Knowing the annual safe groundwater withdrawal rate at the initiation of each dry period could be helpful to decision makers in managing groundwater resources conservation. Analysis results indicate that to develop a safe management strategy in the aquifer; the ratio of the annual groundwater withdrawal to the annually recharged volume should not exceed 0.69. In the water year 2003-04 where the ratio is equal to 0.52, the water table raised up (about 0.48 m) while the groundwater level significantly declined (about 1.54 m) over the water year 2007-08 where the ratio of the annual groundwater withdrawal to the annually recharged volume (i.e., 2.76) is larger than 0.69.

Solid polymer battery electrolyte and reactive metal-water battery

DOEpatents

Harrup, Mason K.; Peterson, Eric S.; Stewart, Frederick F.

2000-01-01

In one implementation, a reactive metal-water battery includes an anode comprising a metal in atomic or alloy form selected from the group consisting of periodic table Group 1A metals, periodic table Group 2A metals and mixtures thereof. The battery includes a cathode comprising water. Such also includes a solid polymer electrolyte comprising a polyphosphazene comprising ligands bonded with a phosphazene polymer backbone. The ligands comprise an aromatic ring containing hydrophobic portion and a metal ion carrier portion. The metal ion carrier portion is bonded at one location with the polymer backbone and at another location with the aromatic ring containing hydrophobic portion. The invention also contemplates such solid polymer electrolytes use in reactive metal/water batteries, and in any other battery.