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Sample records for actinoid series elements

  1. Basis of the solution chemistry of actinoids and lanthanoids

    The studies on aqueous solutions of actinoids and lanthanoids, which are important basis of fuel reprocessing or waste processing and disposal, are reviewed. Characteristics of lanthanoid and actinoid elements including their electronic configuration and valence orbitals, promotion of energy level of f orbitals (4f to 5d and 5f to 6d), the spread of f orbitals and the itinerancy are examined. Similarity and difference between lanthanoids and actinoids are discussed on the basis the difference of f and d electron orbitals. The chemistry of hydrated ions of lanthanoids and actinoids are discussed together with the absorption spectra. (T.H.)

  2. Correlations between molecular structure and charge distribution in organometallic complexes of lanthanoids and actinoids

    The correlation between molecular structure and charge distribution was investigated in organometallic compounds of the lanthanoid (4f-) and actinoid (5f-) elements. These compounds are suitable models for two reasons: a) they are soluble in nonpolar solvents and b) in both series, there is a possibility for continuous variation of the ionic size of the central ion. Detailed investigation of several compound-classes with different molecular symmetry, has given important information concerning the influence of the molecular structure on the macroscopic charge distribution in the molecule. The anisotropy of the charge distribution in the molecule increases with decreasing of the molecular symmetry. Contrary to predictions previously discussed in the literature, it has been shown, that the molecular symmetry primarily does not depend on sterical interactions, but on the Coulomb-interaction between the central ion and the ligand. Using different models which take into account the molecular geometry and the charge distribution, it was possible to calculate the partial electrical moments between ligand and central ion for several coordinating atoms of the used ligands. The contribution of the f-electrons to the total charge distribution around the central ion can be quantitatively calculated from the molecular polarizability and the total charge distribution of the investigated molecule. (orig./RB)

  3. MOLECULAR-STRUCTURE AND CHARGE-DISTRIBUTION OF THE 4F AND 5F ELEMENTS .3. DIPOLE-MOMENTS AND CHARGE-DISTRIBUTION OF 1/1-ADDUCTS OF TRIS(CYCLOPENTADIENYL)LANTHANOIDS(III) AND TRIS(CYCLOPENTADIENYL) ACTINOIDS(III) WITH TETRAHYDROFURAN - X-RAY STRUCTURAL-ANALYSIS OF (C5H5)3DY.THF

    MAIER, R; KANELLAKOPULOS, B; APOSTOLIDIS, C; NUBER, B

    1992-01-01

    The dielectricity constant and the dipole moment of the 1:1 adducts of the tris(cyclopentadienyl)compounds of the trivalent lanthanoids La to Lu (with exception of the Pm compound) and of the lighter actinoids Th, U, Np, and Pu with tetrahydrofuran, (C5H5)3M(III).THF, were measured and the charge di

  4. Lanthanoids(III) and actinoids(III) in water: Diffusion coefficients and hydration enthalpies from polarizable molecular dynamics simulations

    By using polarizable molecular dynamics (MD) simulations of lanthanoid(III) and actinoid(III) ions in water, we obtained ionic diffusion coefficients and hydration enthalpies for both series. These values are in good agreement with experiments. Simulations thus allow us to relate them to microscopic structure. In particular, across the series the diffusion coefficients decrease, reflecting the increase of ion-water interaction. Hydration enthalpies also show that interactions increase from light to heavy ions in agreement with experiment. The apparent contradictory result of the decrease of the diffusion coefficient with decreasing ionic radius is tentatively explained in terms of dielectric friction predominance on Stokes' diffusive regime. (authors)

  5. Material Development for Nuclear Fusion and Energy Development Using Actinoids

    Kayano, Hideo

    1994-01-01

    In our Facilities. fundamental researches on nuclear fuels and reactor materials have been performed by making use of JMTR and JOYO. Authors outline original studies among them currently performed by having myself as the core. Research fields in progress are material developments for the nuclear fusion such as ferritic steel and V alloy and energy development using Actinoids. As the material development for practical nuclear fusion, we do those of low activation V alloys, ferritic steels and ...

  6. Development of partitioning process: back-extraction of actinoid and lanthanoid with hydrazine carbonate

    In the present study the back extraction of actinoid, lanthanoid, Y, Zr, and Mo from DIDPA [Diisodecylphosphoric Acid] and HDEHP [Di(2-ethylhexylphosphoric) Acid] was investigated by using hydrazine carbonate solution. Hydrazine carbonate is a salt-free reagent and easy to decompose. If it is possible to apply this reagent to the 4-group partitioning process, more sophisticated process would be constructed, because of the reduction of secondary wastes. All the elements other than Y could be back-extracted from HDEHP and all the elements other than Y and Mo could be back-extracted from DIDPA by hydrazine carbonate. It was found that the nature of alcohol which was added to avoid emulsification affects on the distribution ratio more than the added amount. (author)

  7. Recovery of actinoids from waste solutions of fuel reprocessing

    In part II of the literature survey, characteristics of the principal separation methods, i.e., solvent extraction and ion exchange, for plutonium(IV), americium(III) and lanthanoids(III) are first described to help understand essentials in the actual examples of applications of the methods. Then, some examples of recoverying actinoids from liquid wastes, especially on a large scale, are presented. Finally, flowsheets being developed in the world for partitioning high-level liquid wastes in fuel reprocessing are given with discussion on their respective problems. (author)

  8. JAEA thermodynamic database for performance assessment of geological disposal of high-level and TRU wastes. Refinement of thermodynamic data for trivalent actinoids and samarium

    Within the scope of the JAEA thermodynamic database project for performance assessment of geological disposal of high-level radioactive and TRU wastes, the refinement of the thermodynamic data for the inorganic compounds and complexes of trivalent actinoids (actinium(III), plutonium(III), americium(III) and curium(III)) and samarium(III) was carried out. Refinement of thermodynamic data for these elements was based on the thermodynamic database for americium published by the Nuclear Energy Agency in the Organisation for Economic Co-operation and Development (OECD/NEA). Based on the similarity of chemical properties among trivalent actinoids and samarium, complementary thermodynamic data for their species expected under the geological disposal conditions were selected to complete the thermodynamic data set for the performance assessment of geological disposal of radioactive wastes. (author)

  9. Study on thermodynamic properties of actinoid oxides

    Tsuji, Toshihide; Miyajima, Nobuyoshi; Kato, Tetsuya; Ochida, Manabu [Nagoya Univ. (Japan). School of Engineering; Mumomura, Tadasumi; Yamashita, Toshiyuki; Nitani, Noriko; Ouchi, Kinji

    1996-01-01

    Since long-life transuranium elements (TRU) accumulate associated with a progress of high-burnup of fuel, TRU quenching in a reactor or an accelerator has been examined in Japan. To design a fuel for TRU quenching, thermal expansion is an important thermal parameter along with thermal capacity and heat transfer coefficient. Here, lattice constants of PuO{sub 2} ThO{sub 2}, UO{sub 2} and NpO{sub 2} were investigated by high temperature X-ray diffraction, showing that the lattice constants of these dioxides but UO{sub 2} obtained in this study were well coincident with Tailor`s values. The linear expansion coefficients for ThO{sub 2}, UO{sub 2} and PuO{sub 2} agreed with TPRC data and that of NpO{sub 2} with Fahey`s measurement. The linear expansion coefficient of NpO{sub 2} was found to be temperature dependent as well as other three dioxides. Those values were in inverse proportion to their melting points in a higher temperature range, whereas in a lower temperature one, the coefficient of UO{sub 2} was larger than those of NpO{sub 2} and PuO{sub 2}. Therefore, such abnormal behavior of the coefficient in a low temperature range was considered to be related to the lower Debye temperature of UO{sub 2} compared with the other dioxides. (M.N.)

  10. Flotation extraction of actinoids and lanthanoids from nitric acid solutions

    A study was made on possibility of using method of ion flotation for extraction of actinoids and lanthanoids from liquid radioactive wastes of spent fuel reprocessing. For this purpose ion flotation of thorium, plutonium (4), uranium (6) and gadolinium from aqueous nitric acid solutions (HNO3 concentration - from 0.01 up to 5.0 mol/l) was investigated, using lauryl phosphoric acid (LPA) as surfactant-collector. Growth of the degree of separation of metal ions with increase of LPA, introduced into the system, independently of acidity of solutions was established. Decrease of separation degree of uranium (6) and gadolinium with acidity growth and constancy of this parameter for plutonium (4) and thorium are observed at fixed mole LPA/metal ratio. Principle possibility of 100% flotation extraction of plutonium (4) and thorium independently of acidity of aqueous solutions is shown. Addition of 0.5 mol/l Ca(NO3)2 into the system doesn't produce sufficient effect on flotation extraction of thorium

  11. Polyacrylonitrile based composite materials with extracting agents containing chemically bonded CMPO groups for separation of actinoids

    Kameník, Jan; Šebesta, F.; John, J.; Böhmer, V.; Rudzevich, V.; Grüner, Bohumír

    2015-01-01

    Roč. 304, č. 1 (2015), s. 313-319. ISSN 0236-5731 Institutional support: RVO:61388980 ; RVO:61389005 Keywords : actinoids * CMPO * Calix[4]arene * cobalt bis(dicarbollide) * polyacrylonitrile * composite material Subject RIV: JI - Composite Materials; CA - Inorganic Chemistry (UACH-T) Impact factor: 1.034, year: 2014

  12. Effects of natural organic compounds on adsorption of actinoid on solid phase and interaction between colloid

    Tominaga, Takeshi; Minai, Yoshitaka; Takahashi, Yoshio; Kohashi, Asaya [Tokyo Univ. (Japan); Yoshida, Zenko; Meguro, Yoshihiro; Kimura, Takaumi

    1996-01-01

    Two problems were studied such as, at first, the effects of calcium and magnesium on formation of complex of actinoid (III) and humic acid and, second, estimation of number of hydrate of europium (III) in polycarbonic acid complex by fluorescence lifetime measurements. With adding calcium and magnesium, the solubility of humic acid and apparent complex formation constant of actinoid (III)-humic acid complex decreased and amount of adsorption of humic acid on kaolinite increased. Apparent complex formation constant increased with increasing the dissociation degree but decreased with increasing the concentration of supporting electrolyte as same as that of humic acid. This result can be explained by the model of polymer electrolyte on the static electrical interaction with metal ions, because polycarbonic acid is polymer electrolyte with many dissociation groups in a molecule. (S.Y.)

  13. Study on actinoids in boundary ion transfer from an aspect of solution chemistry

    Kihara, Sorin; Shirai, Makoto; Matsui, Masakazu [Kyoto Univ., Uji (Japan). Inst. for Chemical Research; Yoshida, Zenko; Aoyagi, Hisao; Kitatsuji, Yoshihiro

    1996-01-01

    This study aimed to elucidate the fundamental properties of boundary ion transfer between water (W) and organic solvent (O) and to apply the results to the study on actinoid ions. First, dissolved states of ion in W and O in relation to boundary transfer were investigated and the transfer stimulation effects by an addition of some agents which can induce their complex formation were examined. Then, a theoretical equation which expresses a relationship between ion-pair extraction reaction and {Delta}Gtr was proposed and proved with {Delta}Gtr of single ion obtained by the use of VITIES, which is an apparatus for voltammetric determination of boundary ion transfer developed by the authors. Single ion transfer in W/O was estimated from the voltammogram based on I-{Delta}V curve (I; electric current which corresponds to the amount of ion transfer and {Delta}V; phase boundary voltage). In addition, determination of actinoid ion transfer in W/O boundary was made by VITIES to clarify the ion transfer energy, velocity and transferred molecular species. Thus, developments of a new isolation method and a trial sensor for actinoid ions were undertaken based on these results. (M.N.)

  14. Pulsed photoacoustic laser spectroscopy for the purpose of determining actinoids specific to various oxidation states in solutions

    The pulsed laser-induced photoacoustic spectroscopy for the speciation of very low concentrations of actinoides in near neutral aquatic solutions is described. Special photoacoustic cells made of two identical piezoelectrical crystals coupled with quartz cuvettes containing the actinoide solutions provide the possibility of a differential measurement. With this technique, using gated detection with a boxcar-integrator, the solvent and window absorption effects are reduced. Following a simple theoretical description, the detection limit of this system can be estimated. Experiments with solutions of pure actinoide ions has shown that some of the oxidation states, such as Pu(IV), Pu(VI) and Am(III) can be detected down to 10-8 mol L-1. The linearity between the boxcar-signal and the actinoide concentration is demonstrated for an extended range over 4 orders of magnitude. Furthermore, qualitative measurements are made for hydrolysis reactions, carbonate complexation and polynucleation of Am-241, Pu-239 and Pu-238 in dilute solutions. With the help of ultrafiltration, photoacoustic spectroscopy is used for indirect detection of polynuclear species, colloids and microcolloids under various solution conditions. (orig.)

  15. Lie-series for orbital elements -- II. The spatial case

    Pál, András

    2016-01-01

    If one has to attain high accuracy over long timescales during the numerical computation of the N-body problem, the method called Lie-integration is one of the most effective algorithms. In this paper we present a set of recurrence relations with which the coefficients needed by the Lie-integration of the orbital elements related to the spatial N-body problem can be derived up to arbitrary order. Similarly to the planar case, these formulae yields identically zero series in the case of no perturbations. In addition, the derivation of the formulae has two stages, analogously to the planar problem. Namely, the formulae are obtained to the first order, and then, higher order relations are expanded by involving directly the multilinear and fractional properties of the Lie-operator.

  16. Effects of organic compounds on actinoid transfer in natural environment

    Hiraki, Keizo; Nakaguchi, Yuzuru; Suzuki, Yasuhiro [Kinki Univ., Higashi-Osaka, Osaka (Japan). Faculty of Science and Technology; Senoo, Muneaki; Nagao, Seiya; Sakamoto, Yoshiaki

    1996-01-01

    For safety evaluation of geological disposal of radioactive wastes, it seems necessary to elucidate the geological transfer of radioactive nuclides in the soil and the undersea sediments. It has been known that there exist various organic compounds highly potential to form a complex with TRU elements, uranium, copper etc. in the soil and the sediments and those compounds may play an important role for geological transfer of nuclides. In this study, fluorescent substances contained in underground and river water were focused as the measures to identify the molecular species of organic compounds in natural water and their interactions with radionuclides and minor metals, and their geological transfers were investigated. Spectrophotometric properties of humic acid obtained in the market were examined. Its fluorescent intensity was strongest at pH 10 and stable for 2 weeks or more. Then, highly polluted river water was taken from Yamato river to determine the contents of humic acid and other fluorescent substances. Further, the effects of the additions of Cu and Fe on the fluorescent intensity were examined. (M.N.)

  17. Diagram of measurement series elements deviation from local linear approximations

    Lande, D. V.; Snarskii, A. A.

    2009-01-01

    Method for detection and visualization of trends, periodicities, local peculiarities in measurement series (dL-method) based on DFA technology (Detrended fluctuation analysis) is proposed. The essence of the method lies in reflecting the values of absolute deviation of measurement accumulation series points from the respective values of linear approximation. It is shown that dL-method in some cases allows better determination of local peculiarities than wavelet-analysis. Easy-to-realize appro...

  18. The transuranium elements: Members of the 5f series

    The Symposium to commemorate the fiftieth anniversary of the discovery of the transuranium elements is an appropriate occasion on which to review the history of the development of ideas concerning the electronic structure of the new elements which, by determining their chemistry, would fix their position in the Periodic Table. Seaborg's actinide hypothesis was based on the properties of Np and Pu, as well as those of transuranium elements discovered after 1940. The elaboration of this hypothesis, with its profound consequences for our current understanding of the Periodic Table, will be traced from its beginnings to its present status, making use of the wealth of spectroscopic and magnetic data accumulated over the years to draw conclusions about the electronic structure of the actinides. Np and Pu, in particular, offered the first possibility for detailed study of the binding energies of 5f versus 6d electrons. The rich chemistry of these two elements is still providing new insights into the subtleties of electronic structure

  19. Study on radiation-induced oxide-reduction of actinoid ions in acid solution

    Ishigure, Kenkichi; Katsumura, Yosuke; Hiroishi, Daisuke [Tokyo Univ. (Japan). Faculty of Engineering] [and others

    1996-01-01

    Many studies have been made on the application of actinoid ion, especially UO{sub 2}{sup 2+} to change atomic valance but the mechanism of photoreduction has not yet been solved. In this study, the mechanism of photoreduction of UO{sub 2}{sup 2+} in acid solution was investigated. As functions of alcohol and acid concentrations, {phi}(U{sup IV}) was determined and photoreduction of UO{sub 2}{sup 2+} was investigated as well as NpO{sub 2}{sup 2+}. As an increase of alcohol content (EtOH, MtOH, iso-PrOH), {phi}(U{sup IV}) increased to reach a plateau ({approx}0.6). In addition, {phi}(U{sup IV}) increased linearly with an increase of acid content and the value became smaller in the order, H{sub 3}PO{sub 4}, H{sub 2}SO{sub 4}, HClO{sub 4} solution. Comparing with these results of UO{sub 2}{sup 2+}, photoreduction of NpO{sub 2}{sup 2+} was investigated. Only NpO{sub 2}{sup +} was produced as the final products, but not Np{sup IV} and NP{sup III}. Alcohol dependency of NpO{sub 2}{sup 2+} photoreduction was similar to that of UO{sub 2}{sup 2+} system but the plateau level of {phi} (NpO{sub 2}{sup 2+}) was lower ({approx}0.15) than the latter. (M.N.)

  20. Parallel, Series, and Intermediate Interconnections of Optical Nanocircuit Elements Part 1: Analytical Solution

    Salandrino, Alessandro; Alu, Andrea; Engheta, Nader

    2007-01-01

    Following our recent development of the paradigm for extending the classic concepts of circuit elements to the infrared and optical frequencies [N. Engheta, A. Salandrino, A. Alu, Phys. Rev. Lett. 95, 095504 (2005)], in this paper we investigate the possibility of connecting nanoparticles in series and in parallel configurations, acting as nanocircuit elements, In particular, we analyze a pair of conjoined half-cylinders, whose relatively simple geometry may be studied and analyzed analytical...

  1. Performance curves of a series DC motor predicted using parametric finite element analysis

    Ebben, R.N. (Milwaukee Electric Tool Corp., Brookfield, WI (United States)); Brauer, J.R.; Lizalek, G.C.; Cendes, Z.J. (Ansoft Corp., Pittsburgh, PA (United States))

    1999-05-01

    Direct-current motors with brushes are commonly used for portable tools and other appliances. A procedure is derived that uses finite element analysis to predict the performance curves of a typical series dc motor. A number of different analyses are made with parametric variations of current and rotor position. The computed torque-speed and current-speed curves are shown to agree closely with the measured curves.

  2. Assembly, integration, and verification (AIV) in ALMA: series processing of array elements

    Lopez, Bernhard; Jager, Rieks; Whyborn, Nicholas D.; Knee, Lewis B. G.; McMullin, Joseph P.

    2012-09-01

    The Atacama Large Millimeter/submillimeter Array (ALMA) is a joint project between astronomical organizations in Europe, North America, and East Asia, in collaboration with the Republic of Chile. ALMA will consist of at least 54 twelve-meter antennas and 12 seven-meter antennas operating as an aperture synthesis array in the (sub)millimeter wavelength range. It is the responsibility of ALMA AIV to deliver the fully assembled, integrated, and verified antennas (array elements) to the telescope array. After an initial phase of infrastructure setup AIV activities began when the first ALMA antenna and subsystems became available in mid 2008. During the second semester of 2009 a project-wide effort was made to put in operation a first 3- antenna interferometer at the Array Operations Site (AOS). In 2010 the AIV focus was the transition from event-driven activities towards routine series production. Also, due to the ramp-up of operations activities, AIV underwent an organizational change from an autonomous department into a project within a strong matrix management structure. When the subsystem deliveries stabilized in early 2011, steady-state series processing could be achieved in an efficient and reliable manner. The challenge today is to maintain this production pace until completion towards the end of 2013. This paper describes the way ALMA AIV evolved successfully from the initial phase to the present steady-state of array element series processing. It elaborates on the different project phases and their relationships, presents processing statistics, illustrates the lessons learned and relevant best practices, and concludes with an outlook of the path towards completion.

  3. Quench characteristics of HTSC elements in series-connected flux-lock type SFCLs through magnetic flux-linkage

    We investigated simultaneous quench characteristics of high-TC superconducting (HTSC) elements in the flux-lock type superconducting fault current limiters (SFCLs) connected in series through the magnetic flux-linkage. To apply the flux-lock type SFCL into power system, its current and voltage ratings are required to increase, which can be achieved by increasing the number of HTSC elements connected in series and in parallel. However, the slight difference in critical currents among HTSC elements, especially connected in series, causes uneven quenches. The suggested structure in this paper, which each flux-lock type SFCL unit was wound in series on the same iron core, can induce the simultaneous quench among HTSC elements by the magnetic flux-linkage generated in each flux-lock type SFCL unit. Through analysis for the fault current limiting experiments using HTSC elements based on YBCO thin films, the mutual flux linkage among the flux-lock type SFCL units was confirmed to be effective for the balanced power burden of HTSC elements in series-connected flux-lock type SFCLs

  4. Preparation and characterization of zirconium phosphate ion exchanger samples with respect to the separation of highly active actinoid elements

    Inorganic ion exchangers are of growing interest in connection with separation processes of α-radiators of high specific activity, or with high gamma doses, because they have a considerably higher radiation resistance at their disposal compared to the commonly used organic ion exchangers. In opposition to their use, however, are the worse properties regarding capacity, chemical resistivity, exchange rate and reproducibility of the ion exchange bed. In the present work, an attempt has been made to influence the properties of a typical representative of this group, zirconium phosphate (ZP), by systematic changing of the preparation parameters in such a manner that a sufficient capacity is obtained regarding tri-valent ions. In addition, information is to be gathered in order to clarify the connection between exchanger property and structure of the ZP. (orig./LH)

  5. Actinoid sorption from nitric acid onto stainless steel. 1. Plutonium sorption and deposition

    Data are given on the sorption of plutonium from nitric acid onto 12Kh18N10T stainless steel. This is determined by the contact time, the temperature, the plutonium and nitric acid concentrations, and the element state. The uptake varies in the following sequence: Puh>> Pu(IV) > Pu(VI) > Pu(III). The plutonium deposition on reference specimens has been determined with periodic drying

  6. Physical properties of the 6d-series elements from density functional theory: Close similarity to lighter transition metals

    Gyanchandani, Jyoti; Sikka, S. K.

    2011-05-01

    We have calculated some of the physical properties of the recently discovered 6d elements by density functional theory. Comparison with those of the 5d metals shows that there is a close analogy for the crystal structures, for parabolic variation of equilibrium atomic volumes and bulk moduli, and an almost linearly increasing behavior of the pressure derivative of the bulk modulus across the 6d series. The Friedel model that is used to explain these trends for homologous series also holds for 6d metals. These elements also seem to be placed correctly in the Periodic Table.

  7. The Tore Supra toroidal pump limiter: experience feedback of HHF elements series manufacture

    Since 1992, reliable High Heat Flux PFCs based on copper alloy heat sink structures and a CFC armour, have been developed. The final result is an actively cooled high heat flux element that is capable of removing up to 10 MW.m-2 in stationary operating conditions. About 600 of these high performance individual components have then been manufactured and assembled in order to equip a Toroidal Pump Limiter (TPL). The final deliveries was successfully achieved end of 2001. The paper deals with the experience feedback built-up along the four years duration of the TPL components manufacture. We will show where issues were encountered, how solutions were found to achieve the fabrication of components and will highlight what are the main technical lessons to be learned: acceptance criteria, choice of materials, margins of processes. Finally a proposal of an alternative optimised design is presented, fruit of the experience gained from this up to now, unique series manufacture of actively cooled plasma facing HHF components. We believe that such experience will certainly be of use to ITER as well as to Wendelstein 7-X as far as PFC is concerned. (authors)

  8. Source tracing of noble metal elements in Lower Cambrian black rock series of Guizhou-Hunan Provinces, China

    2000-01-01

    The Lower Cambrian black rock series of South China is abnormally rich in noble metal elements. According to the concentrations, the ratios, the relations, the distribution and partition patterns of noble metal elements, the authors think that the noble metals and other elements are neither directly from extraterrestrial materials, nor from the products of normal marine sedimentation. The abnormal enrichment of noble metal elements is closely related with hydrothermal fluid that flew out on the sea floor through deep cycling and reaction with Proterozoic ultramafic-mafic igneous rocks forming noble metal rich fluid. It is possible to form industrial multiple-element- ore-deposits, especially hydrothermal type platinum-group-element-ore-deposits in the region with strong hydrothermal action.

  9. Source tracing of noble metal elements in Lower Cambrian black rock series of Guizhou-Hunan Provinces, China

    李胜荣; 高振敏

    2000-01-01

    The Lower Cambrian black rock series of South China is abnormally rich in noble metal elements. According to the concentrations, the ratios, the relations, the distribution and partition patterns of noble metal elements, the authors think that the noble metals and other elements are neither directly from extraterrestrial materials, nor from the products of normal marine sedimentation. The abnormal enrichment of noble metal elements is closely related with hydrothermal fluid that flew out on the sea floor through deep cycling and reaction with Proterozoic ultramafic-mafic igneous rocks forming noble metal rich fluid. It is possible to form industrial multiple-element-ore-deposits, especially hydrothermal type platinum-group-element-ore-deposits in the region with strong hydrothermal action.

  10. Postirradiation examinations of element G-3 from the GCFR F-1 series of mixed-oxide elements after approx. 3 at. % burnup

    Postirradiation examinations were performed on element G-3, from the GCFR F-1 series of mixed-oxide elements, after 2.6 at. % burnup in EBR-II. The 20% cold-worked Type 316 stainless steel clad G-3 element was irradiated as an encapsulated element using a stainless steel thermal barrier to achieve peak cladding temperatures of 6900C at a peak power of 14.4 kW/ft. The maximum diametral increase of the element was 0.2% ΔD/D0. The volatile fission products were found just above the top of the fuel column and in a gap between the bottom and next higher fuel pellet. Annular pellets were used in the element, and at 2.6 at. % burnup, the central hole was closed by fuel material at both the top and the bottom of the fuel column. Fission-product attack of the cladding was minimal; a uniform matrix attack of only 0.3 mil was found along most of the length of the fuel column

  11. Classification of very similar tungsten materials by multivariate interpretation of extensive series of trace element analysis

    Codes written in BASIC for minicomputers have been developed for multivariate regression, principal component analysis, and the cluster method. Based on data sets of optical emission spectroscopy and flame atomic absorption spectroscopy, WO3 and W powders of different origin can be analyzed for iron. Binary correlation coefficients and object and variable representation in the system of coordinates of the principal elements as well as the CLUPOT code confirmed and enlarged the knowledge about the origin of the trace element in tungsten materials

  12. The Evolutionary Modeling and Short-range Climatic Prediction for Meteorological Element Time Series

    YU Kangqing; ZHOU Yuehua; YANG Jing'an; KANG Zhuo

    2005-01-01

    The time series of precipitation in flood season (May-September) at Wuhan Station, which is set as an example of the kind of time series with chaos characters, is split into two parts: One includes macro climatic timescale period waves that are affected by some relatively steady climatic factors such as astronomical factors (sunspot, etc.), some other known and/or unknown factors, and the other includes micro climatic timescale period waves superimposed on the macro one. The evolutionary modeling (EM), which develops from genetic programming (GP), is supposed to be adept at simulating the former part because it creates the nonlinear ordinary differential equation (NODE) based upon the data series. The natural fractals (NF)are used to simulate the latter part. The final prediction is the sum of results from both methods, thus the model can reflect multi-time scale effects of forcing factors in the climate system. The results of this example for 2002 and 2003 are satisfactory for climatic prediction operation. The NODE can suggest that the data vary with time, which is beneficial to think over short-range climatic analysis and prediction. Comparison in principle between evolutionary modeling and linear modeling indicates that the evolutionary one is a better way to simulate the complex time series with nonlinear characteristics.

  13. The use of Rich and Suter diagrams to explain the electron configurations of transition elements

    Orofino, Hugo; Machado, Sergio P.; Faria, Roberto B., E-mail: faria@iq.ufrj.br [Instituto de Quimica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ (Brazil)

    2013-09-01

    Rich and Suter diagrams are a very useful tool to explain the electron configurations of all transition elements, and in particular, the s{sup 1} and s{sup 0} configurations of the elements Cr, Cu, Nb, Mo, Ru, Rh, Pd, Ag, and Pt. The application of these diagrams to the inner transition elements also explains the electron configurations of lanthanoids and actinoids, except for Ce, Pa, U, Np, and Cm, whose electron configurations are indeed very special because they are a mixture of several configurations. (author)

  14. The use of Rich and Suter diagrams to explain the electron configurations of transition elements

    Hugo Orofino

    2013-01-01

    Full Text Available Rich and Suter diagrams are a very useful tool to explain the electron configurations of all transition elements, and in particular, the s¹ and s0 configurations of the elements Cr, Cu, Nb, Mo, Ru, Rh, Pd, Ag, and Pt. The application of these diagrams to the inner transition elements also explains the electron configurations of lanthanoids and actinoids, except for Ce, Pa, U, Np, and Cm, whose electron configurations are indeed very special because they are a mixture of several configurations.

  15. Separation methods used for large-scale production of transplutonium elements

    The production of transplutonium elements by fission reactor in countries of the world is by combination of reactor technology and chemical engineering. A review is made of the chemical processes for production of transplutonium elements on a large scale from neutron-irradiated actinoids; first, historical progress of the production in macro quantities of transplutonium elements in the world, and then the principal processes developed in respective countries and organizations. Finally, these methods are discussed with emphasis placed on the possibility of application to the partitioning of high-level liquid wastes in fuel reprocessing. (author)

  16. Emergence of californium as the second transitional element in the actinide series.

    Cary, Samantha K; Vasiliu, Monica; Baumbach, Ryan E; Stritzinger, Jared T; Green, Thomas D; Diefenbach, Kariem; Cross, Justin N; Knappenberger, Kenneth L; Liu, Guokui; Silver, Mark A; DePrince, A Eugene; Polinski, Matthew J; Van Cleve, Shelley M; House, Jane H; Kikugawa, Naoki; Gallagher, Andrew; Arico, Alexandra A; Dixon, David A; Albrecht-Schmitt, Thomas E

    2015-01-01

    A break in periodicity occurs in the actinide series between plutonium and americium as the result of the localization of 5f electrons. The subsequent chemistry of later actinides is thought to closely parallel lanthanides in that bonding is expected to be ionic and complexation should not substantially alter the electronic structure of the metal ions. Here we demonstrate that ligation of californium(III) by a pyridine derivative results in significant deviations in the properties of the resultant complex with respect to that predicted for the free ion. We expand on this by characterizing the americium and curium analogues for comparison, and show that these pronounced effects result from a second transition in periodicity in the actinide series that occurs, in part, because of the stabilization of the divalent oxidation state. The metastability of californium(II) is responsible for many of the unusual properties of californium including the green photoluminescence. PMID:25880116

  17. Emergence of californium as the second transitional element in the actinide series

    Cary, Samantha K.; Vasiliu, Monica; Baumbach, Ryan E.; Stritzinger, Jared T.; GREEN, THOMAS D.; Diefenbach, Kariem; Cross, Justin N.; Knappenberger, Kenneth L.; Liu, Guokui; Silver, Mark A.; DePrince, A. Eugene; Polinski, Matthew J.; Van Cleve, Shelley M.; House, Jane H.; Kikugawa, Naoki

    2015-01-01

    A break in periodicity occurs in the actinide series between plutonium and americium as the result of the localization of 5f electrons. The subsequent chemistry of later actinides is thought to closely parallel lanthanides in that bonding is expected to be ionic and complexation should not substantially alter the electronic structure of the metal ions. Here we demonstrate that ligation of californium(III) by a pyridine derivative results in significant deviations in the properties of the resu...

  18. Effect of homogenization and alloying elements on hot deformation behaviour of 1XXX series aluminum alloys

    Shakiba, Mohammad

    In the present study, the effect of different alloying elements as well as the homogenization treatment on the hot workability and microstructure of dilute Al-Fe-Si alloys was investigated using hot compression tests, optical microscopy, SEM, electron EBSD, TEM, electrical conductivity measurements. The effect of the homogenization treatment on the microstructure and hot workability of two dilute Al-Fe-Si alloys was first investigated. Homogenization promoted the phase transformation from the metastable AlmFe or alpha-AlFeSi phase to the Al3Fe equilibrium phase and induced a significant change in solute levels in the solid solution. Homogenization at 550°C significantly reduced the solid solution levels due to the elimination of the supersaturation originating from the cast ingot and produced the lowest flow stress under all of the deformation conditions studied. The hot deformation behavior of dilute Al-Fe-Si alloys containing different amounts of Fe (0.1 to 0.7 wt%) and Si (0.1 to 0.25 wt%) was studied by uniaxial compression tests conducted at various temperatures (350-550 °C) and strain rates (0.01-10 s-1). The flow stress of the 1xxx alloys increased with increasing Fe and Si content. Increasing the Fe content from 0.1 to 0.7% raised the flow stress by 11-32% in Al-Fe-0.1Si alloys, whereas the flow stress increased 5-14% when the Si content increased from 0.1 to 0.25% in Al-0.1Fe-Si alloys. The experimental stress-strain data were employed to drive constitutive equations correlating flow stress, deformation temperature and strain rate considering the influence of the chemical composition. The microstructural analysis results revealed that dynamic recovery is the sole softening mechanism during hot deformation of dilute Al-Fe-Si alloys. Increasing the Fe and Si content retarded dynamic recovery and resulted in a decrease in the subgrain size and mean misorientation angle of the boundaries. Furthermore, the hot deformation behavior of dilute Al-Fe-Si alloys

  19. Developing common information elements for renewable energy systems: summary and proceedings of the SERI/AID workshop

    Ashworth, J.H.; Neuendorffer, J.W.

    1980-06-01

    This report describes the activities, conclusions, and recommendations of the Workshop on Evaluation Systems for Renewable Energy Systems sponsored by the Agency for International Development and SERI, held 20-22 February 1980 in Golden, Colorado. The primary objectives of the workshop was to explore whether it was possible to establish common information elements that would describe the operation and impact of renewable energy projects in developing countries. The workshop provided a forum for development program managers to discuss the information they would like to receive about renewable energy projects and to determine whether common data could be agreed on to facilitate information exchange among development organizations. Such information could be shared among institutions and used to make informed judyments on the economic, technical, and social feasibility of the technologies. Because developing countries and foreign assistance agencies will be financing an increasing number of renewable energy projects, these organizations need information on the field experience of renewable energy technologies. The report describes the substance of the workshop discussions and includes the papers presented on information systems and technology evaluation and provides lists of important information elements generated by both the plenary sessions and the small working groups.

  20. Validation and Verification the Expanded Table for Transition Metal Carbonyl and Main Group Element Cluster Series which obey the 18-Electron and 8-Electron (octet Rules respectively

    Enos Masheija Kiremire

    2014-12-01

    Full Text Available The transition metal carbonyl clusters and Main group element clusters belong to natural series based on the number theory. The number series of the cluster series have been generated using the empirical formula k = ½ (E-V where k represents the linkages or bonds that glue together the cluster elements which obey the eighteen electron rule or the octet rule and E is related to the sum of eighteen electrons or the eight electrons and V is the sum of the valence electrons. An expanded cluster table been constructed to accommodate the analysis of medium to relatively large clusters of high nuclearity. Using the knowledge of k-value and the cluster table it is possible for a given cluster formula to be categorized into its type of series and its geometry deduced. This is relatively easy for simple to medium clusters. It is hoped that this simple approach to be adapted to categorize and deduce structures of clusters with high nuclearity. This approach to clusters using number theory will complement the existing clusters theories such as Wade-Mingos rules1-7, Jemmismno rules8-9 and topology rules10.

  1. Generation Mini-Series: Contemporary German Historical Event-Television and the Implications of its Interactive Elements

    Hall, Sara F.

    2016-01-01

    The controversial 2012 ZDF mini-series Unsere Mütter, unsere Väter/Generation War epitomizes German “historical event television,” a broadcasting trend aligned with the recent tendency to normalize the nation’s relationship with its past. Reaching beyond the borders of the narrative drama, the series’ producers created and promoted collateral content encouraging viewers to interact with the fictional characters and other audience members in such new media platforms as Facebook, a pu...

  2. A time series generalized functional model based method for vibration-based damage precise localization in structures consisting of 1D, 2D, and 3D elements

    Sakaris, C. S.; Sakellariou, J. S.; Fassois, S. D.

    2016-06-01

    This study focuses on the problem of vibration-based damage precise localization via data-based, time series type, methods for structures consisting of 1D, 2D, or 3D elements. A Generalized Functional Model Based method is postulated based on an expanded Vector-dependent Functionally Pooled ARX (VFP-ARX) model form, capable of accounting for an arbitrary structural topology. The FP model's operating parameter vector elements are properly constrained to reflect any given topology. Damage localization is based on operating parameter vector estimation within the specified topology, so that the location estimate and its uncertainty bounds are statistically optimal. The method's effectiveness is experimentally demonstrated through damage precise localization on a laboratory spatial truss structure using various damage scenarios and a single pair of random excitation - vibration response signals in a low and limited frequency bandwidth.

  3. Determination of natural radionuclides from 238U and 232Th series, trace and major elements in sediment cores from baixada Santista and evaluation of impacted areas

    Baixada Santista is the region of higher population of the coast of Sao Paulo State, where it is located the largest port in Latin America, in the city of Santos, and the most important industrial complex of Latin America, in the city of Cubatao. This region has received in recent years a considerable load of industrial and domestic effluents in its water bodies, as a direct result of the industrial and port activities and the large population growth in recent decades, and is considered nowadays highly impacted. In the present study sediment cores were collected in the estuary of Santos-Cubatao, in the estuary of Sao Vicente, in the channel of Bertioga and Santos Bay, in order to determine the concentration of trace and major elements and natural radionuclides from the 238U and 232Th series. The techniques used were neutron activation analysis, X-ray fluorescence and gamma spectrometry, respectively. The obtained values for the elements Cr, Sb, Ta and Zn in some cores, are higher than data from literature, and can indicate a possible anthropic contribution. Comparing the obtained values of Cr and Zn elements determined in the sediment cores with the values of TEL and PEL index for sediment quality, it was verified that the studied region presents Cr levels higher than TEL in Santos-Cubatao estuary and Bertioga channel and Zn element presented values higher than TEL for some core slices of Santos-Cubatao estuary, for one core of Sao Vicente estuary, one core in Bertioga channel and Santos Bay. For the other elements, the values obtained in this study can be considered as reference values for the region. Although the element As presented higher values than the TEL in all the studied environments, the concentrations obtained are of the same order of magnitude as literature data and, therefore, can be considered also as reference values for the region. No enrichment was found for the major elements in all the ecosystems studied, with the exception for the element P

  4. Phases of Environmental Evolution Indicated by Primary Chemical Elements and Paleontological Records in the Upper Pleistocene-Holocene Series for the Salawusu River Valley, China

    2007-01-01

    Studies of lithology, sedimentary facies and the distribution regularity of SiO2 and Al2O3 contents and Al2O3/SiO2 ratio allow us to divide the Upper Pleistocene-Holocene Series represented by the Milanggouwan section in China's Salawusu River valley into six segments: MGS1, MGS2, MGS3,MGS4, MGS5 and MGS6. The boundary ages for MGS1 (the Dishaogouwan and Dagouwan Formations), MGS2 (the upper Chengchuan Formation), MGS3 (the middle Chengchuan Formation),MGS4 (the lower Chengchuan Formation), MGS5 (most strata of the Salawusu Formation) and MGS6 (the bottom of the Salawusu Formation and the top of the Lishi Formation) correspond to those of MIS1, MIS2, MIS3, MIS4, MIS5 and MIS6, respectively, from deep sea sediments or continental glaciers. MGS5 can be subdivided into five subsegments (MGS5a, MGS5b, MGS5c,MGS5d and MGS5e) and the boundary ages of these subsegments correspond to those of MIS5a,MIS5b, MIS5c, MIS5d and MIS5e, respectively. Based on the paleoenvironment and paleoecology indicated by the primary chemical elements, fossil vertebrates, mollusks and pollen grains, we hypothesize that MGS1, MGS2, MGS3, MGS4, MGS5 and MGS6 and the subsegments of MGS5 match the corresponding stages for oxygen isotopes in the deep sea sediments and continental glaciers,and the substages of MIS5 in terms of climatic characters, further explaining the phenomena that determined the formation of the late Quaternary strata and the paleontology of the Salawusu River valley. These phenomena relate to fluctuations in the global climate (and particularly in the East Asian monsoon) during the glacial and interglacial periods.

  5. Complex Fuzzy-valued Function's Series Based on Fuzzy Structured Element%基于结构元线性生成的复Fuzzy值函数项级数

    陈孝国

    2012-01-01

    文献[1]中提出了基于结构元理论的Fuzzy数项级数的概念,文献[2]、文献[3]、文献[4]对其收敛性进行了探讨,文献[5]、文献[6]对模糊值函数项数列及级数进行了研究.本文在此基础上给出了基于结构元线性生成的复Fuzzy值函数项数列及级数的定义,同时对复Fuzzy值函数项级数的一些重要性质进行了研究,并给出了相应定理.%The definition of fuzzy series based on fuzzy structured element is advanced in paper [1]. Then the convergence of fuzzy series is discussed in papers [2], [3] and [4], At the same time, the fuzzy-valued function sequence and series are studied in papers [5] and [6]. In this paper,the definitions of linear complex fuzzy-valued function's sequence and series are given based on structured element. At the same time,some important properties of complex fuzzy-valued function's series are studied. Finally, some corresponding theorems are given.

  6. Comparative Study of f-Element Electronic Structure across a Series of Multimetallic Actinide, Lanthanide-Actinide and Lanthanum-Actinide Complexes Possessing Redox-Active Bridging Ligands

    Schelter, Eric J.; Wu, Ruilian; Veauthier, Jacqueline M.; Bauer, Eric D.; Booth, Corwin H.; Thomson, Robert K.; Graves, Christopher R.; John, Kevin D.; Scott, Brian L.; Thompson, Joe D.; Morris, David E.; Kiplinger, Jaqueline L.

    2010-02-24

    A comparative examination of the electronic interactions across a series of trimetallic actinide and mixed lanthanide-actinide and lanthanum-actinide complexes is presented. Using reduced, radical terpyridyl ligands as conduits in a bridging framework to promote intramolecular metal-metal communication, studies containing structural, electrochemical, and X-ray absorption spectroscopy are presented for (C{sub 5}Me{sub 5}){sub 2}An[-N=C(Bn)(tpy-M{l_brace}C{sub 5}Me4R{r_brace}{sub 2})]{sub 2} (where An = Th{sup IV}, U{sup IV}; Bn = CH{sub 2}C{sub 6}H{sub 5}; M = La{sup III}, Sm{sup III}, Yb{sup III}, U{sup III}; R = H, Me, Et) to reveal effects dependent on the identities of the metal ions and R-groups. The electrochemical results show differences in redox energetics at the peripheral 'M' site between complexes and significant wave splitting of the metal- and ligand-based processes indicating substantial electronic interactions between multiple redox sites across the actinide-containing bridge. Most striking is the appearance of strong electronic coupling for the trimetallic Yb{sup III}-U{sup IV}-Yb{sup III}, Sm{sup III}-U{sup IV}-Sm{sup III}, and La{sup III}-U{sup IV}-La{sup III} complexes, [8]{sup -}, [9b]{sup -} and [10b]{sup -}, respectively, whose calculated comproportionation constant K{sub c} is slightly larger than that reported for the benchmark Creutz-Taube ion. X-ray absorption studies for monometallic metallocene complexes of U{sup III}, U{sup IV}, and U{sup V} reveal small but detectable energy differences in the 'white-line' feature of the uranium L{sub III}-edges consistent with these variations in nominal oxidation state. The sum of this data provides evidence of 5f/6d-orbital participation in bonding and electronic delocalization in these multimetallic f-element complexes. An improved, high-yielding synthesis of 4{prime}-cyano-2,2{prime}:6{prime},2{double_prime}-terpyridine is also reported.

  7. Transuranium elements

    This paper reports that neutron irradiation of uranium, beginning in 1934, led to the reported discovery of such transuranium elements as eka-rhenium. After a few years of investigation these were correctly identified, in December 1938, as fission products. The first real transuranium elements, with atomic numbers 93 and 94 (neptumiun and plutionium), were discovered in 1940-1941. Plutomiun-239 was shown to be fission-able with slow neutrons, and chemical methods for its separation in quantity were developed. Not until it was recognized that transuranium elements should be part of a 14-member actinide series could elements 95 and 96 (americium and curium) be chemically identified after their nuclear synthesis. This new view was the key to the synthesis and identified after their nuclear synthesis. This new view was the key to the synthesis and identification of the next seven transuranium elements, resulting in the completion of the actinide series at element 103 in 1961. The transactinide elements could, according to the actinide concept, also be correctly placed in the periodic table, and the chemical properties of the first transactinide elements, elements 104 and 105 (rutherfordium and hafnium), confirm this point of view. Transuranium elements through number 109 are now known

  8. 浅谈单相串激电机电枢元件的借偏%On the Def lection of Single-Phase Series Motor Armature Element

    庄晓龙

    2014-01-01

    以电刷的放置原则为切入点,引出串激电机电枢元件的借偏概念,介绍电枢元件借偏大小判断的原理和基本步骤。%With the principle of placing the brush as a starting point, the concept of universal motor armature element def lection is pointed, and the principle and basic steps of armature elements def lection judgment is introduced.

  9. 浅谈单相串激电机电枢元件的借偏%On the Def lection of Single-Phase Series Motor Armature Element

    庄晓龙

    2014-01-01

    With the principle of placing the brush as a starting point, the concept of universal motor armature element def lection is pointed, and the principle and basic steps of armature elements def lection judgment is introduced.%以电刷的放置原则为切入点,引出串激电机电枢元件的借偏概念,介绍电枢元件借偏大小判断的原理和基本步骤。

  10. Fourier series

    Tolstov, Georgi P

    1962-01-01

    Richard A. Silverman's series of translations of outstanding Russian textbooks and monographs is well-known to people in the fields of mathematics, physics, and engineering. The present book is another excellent text from this series, a valuable addition to the English-language literature on Fourier series.This edition is organized into nine well-defined chapters: Trigonometric Fourier Series, Orthogonal Systems, Convergence of Trigonometric Fourier Series, Trigonometric Series with Decreasing Coefficients, Operations on Fourier Series, Summation of Trigonometric Fourier Series, Double Fourie

  11. Trace element abundances in rutile from eclogite-granulite rock series of the Złote Mountains in the Sudetes (SW Poland)

    Bakun-Czubanov, N.; Kusy, D.; Fiala, Jiří

    2005-01-01

    Roč. 26, - (2005), s. 132-136. ISSN 0867-7360. [Crystalline Rocks of the East-European Craton. meeting of the Petrology Group of the Mineralogical Society of Poland /12./. Stary Folwark, 13.10.2005-16.10.2005] Institutional research plan: CEZ:AV0Z30130516 Keywords : rutile * trace elements * Zr-in-rutile geothermometer Subject RIV: DB - Geology ; Mineralogy http://www.geo.uw.edu.pl/PTMINSP/2005/2005.htm

  12. The Regression Analysis of Dynamic Characteristic for Series Nanofiltration Membrane Elements%系列纳滤膜元件动态特性的回归分析

    杨宇星; 靖大为; 韩力伟; 李菁杨

    2013-01-01

      明确了纳滤膜元件运行特性与动态特性的概念,给出了膜系统运行状态方程及膜元件动态特性表达式的求解方法,并说明了纳滤膜元件脱盐率特性曲线的变化规律,为纳滤膜系统软件的设计及运行分析提供了数据基础。%The concepts of operation and dynamic characteristics of the nanofiltration membrane elements are clarified. Meanwhile, the solving methods of operation state equation of membrane system and dynamic characteristic expression of membrane element are also given in this paper. Besides, the authors illustrate the change rules of desalination rate level char-acteristic curve of nanofiltration membrane element, which provides data basis for the software design and operation analysis of nanofiltration membrane system.

  13. Time-scales of erosion and weathering processes in the Himalayan river system: Element and isotope approach using the U-series

    The time-scales of erosion and weathering processes are key parameters which need to be determined to understand the response of the reliefs to external forcing like tectonics, climate and human activities. They were recovered by using U-series nuclides analyzed in sediments and suspended materials carried by the Himalayan rivers of the Ganges and Brahmaputra basins. In the Ganges basin, the time-scales of weathering determined from the study of coarse sediments carried by the Kali Gandaki range from several ky, where the uplift is located, to 350 ky. Such values indicate that the bed-rocks are in situ weathered for a long period before the weathering residual products get transported in the rivers as coarse sediments. At the outlet of the high range, these sediments are carried by the tributaries of the Ganges, the Gandak and Ghaghara, during a transfer period of about 100 ka. The study of the sediments at the outlet of the Brahmaputra tributaries allows to propose time-scales of weathering ranging from 110 to 270 ky. Such long periods confirm that during their transfer in the plains, the sediments are temporarily trapped at several places in the basins. In the Ganges and Brahmaputra rivers, the time-scales of sedimentary transfer are 575 and 160 ky, respectively. These values, which are of the same order as their response times, are much longer than the timescales of the Quaternary climate oscillations. It confirms the buffering action of the asiatic alluvial plains for the high-frequency sediment flux variations in response to external forcing in the chain. The study of suspended materials suggests that their chemical compositions result from the mixing of coarse river sediments with fine particles from various locations in the basin which are affected by vegetation recycling. By contrast to coarse sediments, the time-scales of transfer for the suspended materials are fast, e.g. a few ky, pointing the potential of U-series nuclides to assess particle transport

  14. Infinite series

    Hyslop, James M

    2006-01-01

    Intended for advanced undergraduates and graduate students, this concise text focuses on the convergence of real series. Definitions of the terms and summaries of those results in analysis that are of special importance in the theory of series are specified at the outset. In the interests of maintaining a succinct presentation, discussion of the question of the upper and lower limits of a function is confined to an outline of those properties with a direct bearing on the convergence of series.The central subject of this text is the convergence of real series, but series with complex terms and

  15. Series misdemeanors

    Stoutemyer, David R

    2012-01-01

    Puiseux series are power series in which the exponents can be fractional and/or negative rational numbers. Several computer algebra systems have one or more built-in or loadable functions for computing truncated Puiseux series -- perhaps generalized to allow coefficients containing functions of the series variable that are dominated by any power of that variable, such as logarithms and nested logarithms of the series variable. Some computer-algebra systems also offer functions that can compute more-general truncated recursive hierarchical series. However, for all of these kinds of truncated series there are important implementation details that haven't been addressed before in the published literature and in current implementations. For implementers this article contains ideas for designing more convenient, correct, and efficient implementations or improving existing ones. For users, this article is a warning about some of these limitations. Many of the ideas in this article have been implemented in the compu...

  16. Chart Series

    U.S. Department of Health & Human Services — The Centers for Medicare and Medicaid Services (CMS) offers several different Chart Series with data on beneficiary health status, spending, operations, and quality...

  17. Time Series Explorer

    Loredo, Thomas

    The key, central objectives of the proposed Time Series Explorer project are to develop an organized collection of software tools for analysis of time series data in current and future NASA astrophysics data archives, and to make the tools available in two ways: as a library (the Time Series Toolbox) that individual science users can use to write their own data analysis pipelines, and as an application (the Time Series Automaton) providing an accessible, data-ready interface to many Toolbox algorithms, facilitating rapid exploration and automatic processing of time series databases. A number of time series analysis methods will be implemented, including techniques that range from standard ones to state-of-the-art developments by the proposers and others. Most of the algorithms will be able to handle time series data subject to real-world problems such as data gaps, sampling that is otherwise irregular, asynchronous sampling (in multi-wavelength settings), and data with non-Gaussian measurement errors. The proposed research responds to the ADAP element supporting the development of tools for mining the vast reservoir of information residing in NASA databases. The tools that will be provided to the community of astronomers studying variability of astronomical objects (from nearby stars and extrasolar planets, through galactic and extragalactic sources) will revolutionize the quality of timing analyses that can be carried out, and greatly enhance the scientific throughput of all NASA astrophysics missions past, present, and future. The Automaton will let scientists explore time series - individual records or large data bases -- with the most informative and useful analysis methods available, without having to develop the tools themselves or understand the computational details. Both elements, the Toolbox and the Automaton, will enable deep but efficient exploratory time series data analysis, which is why we have named the project the Time Series Explorer. Science

  18. DCP Series

    Philip Stearns

    2011-01-01

    Photo essay. A collection of Images produced by intentionally corrupting the circuitry of a Kodak DC280 2 MP digitalcamera. By rewiring the electronics of a digital camera, glitched images are produced in a manner that parallels chemically processing unexposed film or photographic paper to produce photographic images without exposure to light. The DCP Series of Digital Images are direct visualizations of data generated by a digital camera as it takes a picture. Electronic processes associated...

  19. SERI Biomass Program. FY 1983 annual report

    Corder, R.E.; Hill, A.M.; Lindsey, H.; Lowenstein, M.Z.; McIntosh, R.P.

    1984-02-01

    This report summarizes the progress and research accomplishments of the SERI Biomass Program during FY 1983. The SERI Biomass Program consists of three elements: Aquatic Species, Anaerobic Digestion, and Photo/Biological Hydrogen. Each element has been indexed separately. 2 references, 44 figures, 22 tables.

  20. Formation of Pedogenic Carbonates in the Semi-arid Rio Grande Valley: Insights from Carbon, Major elements, and U-series isotopes in Natural and Agricultural Soils of Southern New Mexico and Western Texas

    Nyachoti, S. K.; Ma, L.; Jin, L.; Tweedie, C. E.

    2013-12-01

    Accumulation of pedogenic carbonates in arid and semi-arid soils affects soil porosity, water infiltration, and global carbon cycle. We investigate formation rates of these carbonates under different land uses in the semi-arid Rio Grande valley using mineralogy, concentrations of major elements (including C), and U-series isotopes. Our study sites include one alfalfa farm (Alfalfa) at El Paso, TX under frequent irrigation with saline water from the Rio Grande River, and one natural shrub field under natural rainfall conditions at the USDA Jornada Experimental Range (Jornada) in NM. Major minerals observed at Alfalfa and Jornada are calcite, quartz, and feldspars. Calcite/quartz ratios increase upward in the profile at Alfalfa, suggesting formation of carbonates in shallow soils. Consistently, total carbon increases toward the soil surface at Alfalfa, contributed by both soil organic carbon and soil inorganic carbon (pedogenic carbonates). Concentrations of major elements (e.g Ca, Mg, and Sr) also increase toward the surface at Alfalfa, suggesting surface addition. Alternating trends of enrichment and depletion are observed throughout the soil profiles. In contrast, calcite/quartz ratios decrease toward the surface at Jornada, indicative of leaching at shallow soils and redeposition of calcite at depth. This is in agreement with high soil inorganic carbon contents measured at depth. At Jornada however, the Ca, Mg and Sr concentrations decrease toward the surface, showing typical depletion profiles. (234U/238U) activity ratios in bulk soils increase upward at Alfalfa while at Jornada (234U/238U) ratios decrease toward the surface. (234U/238U) ratios at Alfalfa suggest surface addition of U onto shallow soils probably from irrigation water, which is known to have high (234U/238U) ratios. Jornada shows preferential loss of 234U upward. U-series disequilibrium in pedogenic carbonates enables calculation of their formation ages. At Alfalfa, carbonate ages range from 2

  1. Time constraints on the origin of large volume basalts derived from O-isotope and trace element mineral zoning and U-series disequilibria in the Laki and Grímsvötn volcanic system

    Bindeman, Ilya N.; Sigmarsson, Olgeir; Eiler, John

    2006-05-01

    The 1783-1784 AD fissure eruption of Laki (Iceland) produced 15 km 3 of homogeneous basaltic lavas and tephra that are characterized by extreme (3‰) 18O-depletion relative to normal mantle. Basaltic tephra erupted over the last 8 centuries and as late as in November 2004 from the Grímsvötn central volcano, which together with Laki are a part of a single volcanic system, is indistinguishable in δ18O from Laki glass. This suggests that all tap a homogeneous and long-lived low- δ18O magma reservoir. In contrast, we observe extreme oxygen isotope heterogeneity (2.2-5.2‰) in olivine and plagioclase contained within these lavas and tephra, and disequilibrium mineral-glass oxygen-isotope fractionations. Such low- δ18O glass values, and extreme 3‰ range in δ18O olivine have not been described in any other unaltered basalt. The energy constrained mass balance calculation involving oxygen isotopes and major element composition calls for an origin of the Laki-Grímsvötn quartz tholeiitic basaltic melts with δ18O = 3.1‰ by bulk digestion of low- δ18O hydrated basaltic crust with δ18O = - 4‰ to + 1‰, rather than magma mixing with ultra-low- δ18O silicic melt. The abundant Pleistocene hyaloclastites, which were altered by synglacial meltwaters, can serve as a likely assimilant material for the Grímsvötn magmas. The ( 226Ra / 230Th) activity ratio in Laki lavas and 20th century Grímsvötn tephras is 13% in-excess of secular equilibrium, but products of the 20th century Grímsvötn eruptions have equilibrium ( 210Pb / 226Ra). Modeling of oxygen isotope exchange between disequilibrium phenocrysts and magmas, and these short-lived U-series nuclides yields a coherent age for the Laki-Grímsvötn magma reservoir between 100 and 1000 yrs. We propose the existence of uniquely fingerprinted, low- δ18O, homogeneous, large volume, and long-lived basaltic reservoir beneath the Laki-Grímsvötn volcanic system that has been kept alive in its position above the

  2. DCP Series

    Philip Stearns

    2011-06-01

    Full Text Available Photo essay. A collection of Images produced by intentionally corrupting the circuitry of a Kodak DC280 2 MP digitalcamera. By rewiring the electronics of a digital camera, glitched images are produced in a manner that parallels chemically processing unexposed film or photographic paper to produce photographic images without exposure to light. The DCP Series of Digital Images are direct visualizations of data generated by a digital camera as it takes a picture. Electronic processes associated with the normal operations of the camera, which are usually taken for granted, are revealed through an act of intervention. The camera is turned inside­out through complexes of short­circuits, selected by the artist, transforming the camera from a picture taking device to a data capturing device that renders raw data (electronic signals as images. In essence, these images are snap­shots of electronic signals dancing through the camera's circuits, manually rerouted, written directly to the on­board memory device. Rather than seeing images of the world through a lens, we catch a glimpse of what the camera sees when it is forced to peer inside its own mind.

  3. Creativity Management Key Elements

    Fuchs Ángeles, Rosa María; Franceso Tonetti, Federico Carlo

    2015-01-01

    Organizations are constantly looking towards innovation. In order to reach it they must foment creativity. This paper analyzes a series of elements considered in the organizational creativity management and proposes a model with the indispensable factors that organizations should consider to reach it. These elements are: culture and organizational environment, strategy, structure, communication, relation with customers, human resources (recruiting, training, job design, compensation, promotio...

  4. Carrier-mediated transport of actinides and rare earth elements through liquid and plasticized membranes

    The first works in this field were realized approximately 25 years ago, when BLOCK et al. reported their studies about carrier-mediated transport (also called pertraction or membrane extraction) of uranium through plasticized membranes with neutral esters derived from phosphoric acid. At this time, the methodical principles of selective pertraction of ionic compounds through so-called bulk liquid membranes containing carriers were known. However, these membranes, similarly as plasticized membranes, have not achieved a broader use. This is probably because bulk liquid membranes are from a technical point of view fairly distant from the idea of a typical membrane system, and plasticized membranes (sometimes also called gel membranes) present great resistance. By the end of the 1960's and at the beginning of the 1970's, LI and CUSSLER worked out the principles for two widely used pertraction techniques, called pertraction through emulsion liquid and supported liquid membranes (ELM and SLM). These two techniques not only have greatest significance in laboratory practice, but they also are interesting for technological aims because of the attainable large phase boundaries, e.g. 103-104 m2/m3. Many ways to arrange membrane systems are described in papers. Recently, the significance of carrier-mediated transport through liquid membranes has grown to have (since 1980) separate section at the International Solvent Extraction Conference. This paper does not deal with mathematical models and the mechanism of pertraction in general, but it gives an overview of results obtained in publications referring to pertraction of two related element groups - actinoids and rare earth elements - using various membrane types. (author) 154 refs

  5. Dow Introduces "Human Element" to China

    Jenny Du

    2007-01-01

    @@ Recently, the DOW Chemical Company of the United States introduced the "Human Element" to China. The "Human Element" series campaignwas launched in North America and Europe respectively from 2006 and the Q2 of 2007.

  6. Transuranium elements

    In this paper, the authors introduce this volume of historical and research papers on the transuranium elements by reviewing the period of discovery of elements 93 and beyond. Then the authors highlight the research achievements that focus on the unique properties of the 5f elements. Finally, the authors outline the technology and applications of transuranium elements and their radiobiology

  7. Continuously-Variable Series-Elastic Actuator

    Mooney, Luke M.; Herr, Hugh M.

    2013-01-01

    Actuator efficiency is an important factor in the design of powered leg prostheses, orthoses, exoskeletons, and legged robots. A continuously-variable series-elastic actuator (CV-SEA) is presented as an efficient actuator for legged locomotion. The CV-SEA implements a continuously-variable transmission (CVT) between a motor and series elastic element. The CVT reduces the torque seen at the motor and allows the motor to operate in speed regimes of higher efficiency, while the series-elastic el...

  8. Studies of the physico-chemical properties on the transuranian elements in connection with the migration phenomenon in the geosphere. Task 3 Characterization of radioactive waste forms. A series of final reports (1985-89)

    In the first part, the properties of the transuranium elements (TRU) mainly Pu Np Am have been investigated in terms of complexation by OH and CO3 ligands in aqueous solution. The species which are formed in given physicochemical conditions (ionic strength, concentrations...) are studied with no direct reference to well defined ground waters. Equilibrium constants of complexes and redox potential values are useful in the drawing up of Pourbaix's diagrams. Areas of stability of species in function of Eh pH pCO2 are given for the different elements in a few cases. The second part of this report deals with the study of the transfer of tritiated water cesium and strontium through highly compacted clay (diffusion coefficient). In a third part a code for the computation of ion migration and diffusion in areas close to radwaste storage facilities has been developed. This type of application was found to require a mesh pattern and boundary conditions different from the usual, which justifies the writing of a new code called CONDIMENT. (Convection and Diffusion of elements) 49 figs.; 18 tabs.; 21 refs

  9. Study on actinoid isolation by antimonide ion exchanger

    Tsuji, Masamichi [Tokyo Inst. of Tech. (Japan). Faculty of Science; Kubota, Masumitsu; Yamagishi, Isao

    1996-01-01

    To establish a containment of long-life nuclides and an effective reduction of waste volume is important to reduce the loadings on the natural environment. Chemical isolation of radioactive nuclides from wastes was attempted by using inorganic ion exchanger with high specificity and thermal stability. In this study, titanium antimonide was used as an ion exchanger to investigate the adsorption of trivalent metallic ions according to Kielland plot curves. When the ionic equivalent fraction (X-bar{sub M}) was around 0.005, Kielland plot curve of either of 3-valent metallic ions was bent, suggesting the exchanger had two different adsorption sites. The slope of the curve became smaller as an elevation of temperature. These results show that the ion radius was decreased resulting from partial elimination of the hydrated water of ion and thus, the steric conditions around the exchange site might be improved. (M.N.)

  10. Mechanism of fission of neutron-deficient actinoids nuclides

    Sueki, Keisuke; Nakahara, Hiromichi [Tokyo Metropolitan Univ., Hachioji (Japan). Faculty of Science; Tanase, Masakazu; Nagame, Yuichiro; Shinohara, Nobuo; Tsukada, Kazuaki

    1996-01-01

    A heavy ion reaction ({sup 19}F+{sup 209}Bi) is selected. The reaction produces neutron-deficient {sup 228}U which is compound nucleus with a pair of Rb(z=37) and Cs(Z=55). Energy dissipation problem of nucleus was studied by measuring the isotope distribution of two fissile nuclides. Bismuth metal evaporated on aluminium foil was irradiated by {sup 19}F with the incident energy of 105-128 MeV. We concluded from the results that the excess energy of reaction system obtained with increasing the incident energy is consumed by (1) light Rb much more than Cs and (2) about 60% of energy is given to two fission fragments and the rest 40% to the translational kinetic energy or unknown anomalous {gamma}-ray irradiation. (S.Y.)

  11. New mesogenic homologous series of -methylcinnamates

    R A Vora; A K Prajapati

    2001-04-01

    Compounds of a new smectogenic homologous series of -methylcinnamates were prepared by condensing different 4--alkoxybenzoyl chloride with methoxyethyl trans-4-hydroxy- -methylcinnamate. In this series, the first six members are non-mesogenic. -Heptyloxy derivative exhibits monotropic smectic A phase whereas rest of the members exhibit enantiotropic smectic A mesophase. The compounds are characterized by combination of elemental analysis and spectroscopic techniques. Enthalpies of few homologues are measured by DSC techniques. Fluorescent properties are also observed. The thermal stabilities of the present series are compared with those of other structurally related mesogenic homologous series.

  12. Harry Potter Series and Gothic Traditions

    ZHU Hong-rui

    2015-01-01

    Since the first book—Harry Potter and the Philosopher’s Stone of Harry Potter series was published in 1997, it has caused a series of magic storm around the world. Why Harry Potter series can transcend ages and nationality, and have created so much global repercussion? The reason can partially due to the wonderful magic world described by Rowling. The more profound reason is that Rowling applied Gothic traditions in Harry Potter series to make her works more attractive. The thesis is based on Gothic traditions, and has discussed status and influence of Gothic novel, and Gothic elements, like situation, environment and character.

  13. Summation of series

    Jolley, LB W

    2004-01-01

    Over 1,100 common series, all grouped for easy reference. Arranged by category, these series include arithmetical and geometrical progressions, powers and products of natural numbers, figurate and polygonal numbers, inverse natural numbers, exponential and logarithmic series, binomials, simple inverse products, factorials, trigonometrical and hyperbolic expansions, and additional series. 1961 edition.

  14. Improved 206Pb/238U microprobe geochronology by the monitoring of a trace-element-related matrix effect; SHRIMP, ID-TIMS, ELA-ICP-MS and oxygen isotope documentation for a series of zircon standards

    Black, L.P.; Kamo, S.L.; Allen, C.M.; Davis, D.W.; Aleinikoff, J.N.; Valley, J.W.; Mundil, R.; Campbell, I.H.; Korsch, R.J.; Williams, I.S.; Foudoulis, C.

    2004-01-01

    Precise isotope dilution-thermal ionisation mass spectrometry (ID-TIMS) documentation is given for two new Palaeozoic zircon standards (TEMORA 2 and R33). These data, in combination with results for previously documented standards (AS3, SL13, QGNG and TEMORA 1), provide the basis for a detailed investigation of inconsistencies in 206Pb/238U ages measured by microprobe. Although these ages are normally consistent between any two standards, their relative age offsets are often different from those established by ID-TIMS. This is true for both sensitive high-resolution ion-microprobe (SHRIMP) and excimer laser ablation-inductively coupled plasma-mass spectrometry (ELA-ICP-MS) dating, although the age offsets are in the opposite sense for the two techniques. Various factors have been investigated for possible correlations with age bias, in an attempt to resolve why the accuracy of the method is worse than the indicated precision. Crystallographic orientation, position on the grain-mount and oxygen isotopic composition are unrelated to the bias. There are, however, striking correlations between the 206Pb/238U age offsets and P, Sm and, most particularly, Nd abundances in the zircons. Although these are not believed to be the primary cause of this apparent matrix effect, they indicate that ionisation of 206Pb/238U is influenced, at least in part, by a combination of trace elements. Nd is sufficiently representative of the controlling trace elements that it provides a quantitative means of correcting for the microprobe age bias. This approach has the potential to reduce age biases associated with different techniques, different instrumentation and different standards within and between laboratories. Crown Copyright ?? 2004 Published by Elsevier B.V. All rights reserved.

  15. Time-scales of erosion and weathering processes in the Himalayan river system: Element and isotope approach using the U-series; Constantes de temps des processus d'erosion et d'alteration dans le systeme himalayen: approche geochimique elementaire et isotopique par les series de l'uranium

    Granet, M

    2007-06-15

    The time-scales of erosion and weathering processes are key parameters which need to be determined to understand the response of the reliefs to external forcing like tectonics, climate and human activities. They were recovered by using U-series nuclides analyzed in sediments and suspended materials carried by the Himalayan rivers of the Ganges and Brahmaputra basins. In the Ganges basin, the time-scales of weathering determined from the study of coarse sediments carried by the Kali Gandaki range from several ky, where the uplift is located, to 350 ky. Such values indicate that the bed-rocks are in situ weathered for a long period before the weathering residual products get transported in the rivers as coarse sediments. At the outlet of the high range, these sediments are carried by the tributaries of the Ganges, the Gandak and Ghaghara, during a transfer period of about 100 ka. The study of the sediments at the outlet of the Brahmaputra tributaries allows to propose time-scales of weathering ranging from 110 to 270 ky. Such long periods confirm that during their transfer in the plains, the sediments are temporarily trapped at several places in the basins. In the Ganges and Brahmaputra rivers, the time-scales of sedimentary transfer are 575 and 160 ky, respectively. These values, which are of the same order as their response times, are much longer than the timescales of the Quaternary climate oscillations. It confirms the buffering action of the asiatic alluvial plains for the high-frequency sediment flux variations in response to external forcing in the chain. The study of suspended materials suggests that their chemical compositions result from the mixing of coarse river sediments with fine particles from various locations in the basin which are affected by vegetation recycling. By contrast to coarse sediments, the time-scales of transfer for the suspended materials are fast, e.g. a few ky, pointing the potential of U-series nuclides to assess particle transport

  16. Protection vs. false targets in series systems

    The paper analyses the optimal distribution of the defense resources between protecting the genuine system elements and deploying false elements (targets) in a series system, which is destroyed when any genuine element is destroyed. False and genuine elements cannot be distinguished by the attacker. We analyze a two-period game where the defender builds the defense in the first period, whereas the attacker attacks in the second period. Three cases are considered: the attacker attacks only one element, the attacker attacks all system elements, the attacker chooses the number of elements to attack that maximizes the overall system vulnerability. The probability of element destruction in the case of attack is defined as a contest function depending on the ratio of the defender's and attacker's effort and on a contest intensity parameter. The dependence of the minmax defense strategy (number of false elements) and the most harmful attack strategy (number of attacked elements) on the amount of resources available to the counterparts, on the number of genuine system elements and on the contest intensity is analyzed. Illustrative examples are presented

  17. New elements - approaching ?

    Hofmann, S.

    1998-06-01

    The search for new elements is part of the broader field of investigations of nuclei at the limits of stability. In two series of experiments at SHIP, six new elements 0034-4885/61/6/002/img2 were synthesized via fusion reactions using 1n-deexcitation channels and lead or bismuth targets. The isotopes were unambiguously identified by means of 0034-4885/61/6/002/img3 correlations. Alpha decay, not fission, is the dominant decay mode. The collected decay data establish a means of comparison with theoretical data. This aids in the selection of appropriate models that describe the properties of known nuclei. Predictions based on these models are useful in the preparation of the next generation of experiments. Cross sections decrease by two orders of magnitude from bohrium (Z = 107) to element 112, for which a cross section of 1 pb was measured. The development of intense beam currents and sensitive detection methods is essential for the production and identification of still heavier elements and new isotopes of already known elements, as well as the measurement of small 0034-4885/61/6/002/img4-, 0034-4885/61/6/002/img5- and fission-branching ratios. An equally sensitive set-up is needed for the measurement of excitation functions at low cross sections. Based on our results, it is likely that the production of isotopes of element 114 close to the island of spherical superheavy elements (SHEs) could be achieved by fusion reactions using 0034-4885/61/6/002/img6 targets. Systematic studies of the reaction cross sections indicate that the transfer of nucleons is an important process for the initiation of fusion. The data allow for the fixing of a narrow energy window for the production of SHEs using 1n-emission channels. The likelihood of broadening the energy window by investigation of radiative capture reactions, use of neutron deficient projectile isotopes and use of actinide targets is discussed.

  18. PELTIER ELEMENTS

    Tani, Laurits

    2015-01-01

    To control Peltier elements, temperature controller was used. I used TEC-1091 that was manufactured my Meerstetter Engineering. To gain control with the temperature controller, software had to be intalled on a controlling PC. There were different modes to control the Peltier: Tempererature controller to control temperature, Static current/voltage to control voltage and current and LIVE ON/OFF to auto-tune the controller respectively to the system. Also, since near the collision pipe there is much radiation, radiation-proof Peltier elements have to be used. To gain the best results, I had to find the most efficient Peltier elements and try to get their cold side to -40 degrees Celsius.

  19. Radiographic element

    Radiographic elements are disclosed having first and second silver halide emulsion layers comprised of a dispersing medium and radiation-sensitive silver halide grains, and a support interposed between said silver halide emulsion layers capable of transmitting radiation to which said second silver halide emulsion layer is responsive. These elements are characterized in that at least said first silver halide emulsion layer contains tabular silver halide grains and spectral sensitizing dye adsorbed to the surface of the grains. Crossover can be improved in relation to the imaging characteristics. (author)

  20. Testing research on overvoltage waveshape measurements using capacitor element C3 in series connection within 500kV CVT%500kV CVT内置低压电容C3测量过电压波形的试验研究

    司文荣; 贺林; 金珩; 傅晨钊; 黄华

    2013-01-01

    为验证基于内置低压电容C3电容式试验互感器(Capacitor Voltage Transformer,CVT)测量电力系统过电压波形的分压方式,即低压电容C3与高压电容C1和中压电容C2进行串联分压作为低压臂输出,基于无锡日新厂500kV CVT进行设备改造,串入了自制大容量无感电容单元(54μF)C3,分别进行了模拟工频过电压试验、操作冲击试验和雷电冲击试验.对采集获取的C3两端输出的数字电压波形信号进行了时、频域分析,以及分压比稳定性验证.试验和数据分析结果表明,串接自制大容量无感电容C3两端输出的电压波形光滑平稳,基本无过冲和振荡,分压比与设计值的相对偏差小于1%,即该分压方式适合用于超高压电网系统单次过电压波形的测量.%To validate a novel voltage-divider based on the capacitive voltage transformer (CVT) to measure over-voltage waveshape for power system, an element C3 in series connection with high-voltage capacitance C1 and media-voltage capacitance C2 as the low voltage part of sensor (LVPS) is used. A CVT of 500kV level provided by Nissin Electric Wuxi CO. , LTD was modified within a element C3 of 54μF in series connection. Lots of tests with ac simulation overvoltage, switch impulse and lightning impulse are done respectively to the modified CVT. Voltage waveshapes from the element C3 with digital sampling are analyzed in both time and frequency domains, and the stabilization of the voltage division ratio is also verified. The results of tests and data analysis show that the voltage waveshapes from the element C3 developed in series connection within CVT have a good characteristic with stable waveshape parameters, no overshoot and oscillation, and the relative deviation is lower than 1 % . It is feasible to be used in overvoltage waveshape measurements of power system with ultra-high voltage level.

  1. Radiolabelled Cellular Blood Elements

    This volume contains the abstracts of the 5th International Symposion on Radiolabelling of Cellular Blood Elements to be held in Vienna, Austria, September 10-14, 1989. The Meeting is the fifth in a series of meetings designed to discuss the basics and clinical application of radiolabelling techniques. In these days, beside the search for new labelling agents and extending the knowledge in clinical use, the use of monoclonal antibodies is a big new challenge. All reviewed contributions that have been accepted for presentation are contained in this volume. (authors) 58 of them are of INIS scope

  2. Series Transmission Line Transformer

    Buckles, Robert A.; Booth, Rex; Yen, Boris T.

    2004-06-29

    A series transmission line transformer is set forth which includes two or more of impedance matched sets of at least two transmissions lines such as shielded cables, connected in parallel at one end ans series at the other in a cascading fashion. The cables are wound about a magnetic core. The series transmission line transformer (STLT) which can provide for higher impedance ratios and bandwidths, which is scalable, and which is of simpler design and construction.

  3. Rheumatoid Arthritis Educational Video Series

    Full Text Available ... Rheumatoid Arthritis Educational Video Series Rheumatoid Arthritis Educational Video Series This series of five videos was designed ... Activity Role of Body Weight in Osteoarthritis Educational Videos for Patients Rheumatoid Arthritis Educational Video Series Psoriatic ...

  4. Accounting Issues: An Essay Series Part VII--Liabilities

    Laux, Judy

    2008-01-01

    This article, the seventh in the series, presents accounting for liabilities along with some related conceptual and measurement issues. Additional coverage is devoted to potential ethical dilemmas and both theoretical and empirical literature related to this set of accounting elements.

  5. Almost everywhere convergence over cubes of multiple trigonometric Fourier series

    Under certain conditions on a function φ:[0,+∞)→[0,+∞) we prove a theorem asserting that the convergence almost everywhere of trigonometric Fourier series for all functions of class φ(L)[-π,π) implies the convergence over cubes of the multiple Fourier series and all its conjugates for an arbitrary function f element of φ(L)(log+L)d-1)[-π,π)d, d element of N. It follows from this and an earlier result of the author on the convergence almost everywhere of Fourier series of functions of one variable and class L(log+L)(log+log+log+L))[-π,π) that if f element of L(log+L)d(log+log+log+L))[-π,π)d, d element of N, then the Fourier series of f and all its conjugates converge over cubes almost everywhere

  6. The construction of TRIGA-TRAP and direct high-precision Penning trap mass measurements on rare-earth elements and americium

    Ketelaer, Jens

    2010-06-14

    The construction of TRIGA-TRAP and direct high-precision Penning trap mass measurements on rare-earth elements and americium: Nuclear masses are an important quantity to study nuclear structure since they reflect the sum of all nucleonic interactions. Many experimental possibilities exist to precisely measure masses, out of which the Penning trap is the tool to reach the highest precision. Moreover, absolute mass measurements can be performed using carbon, the atomic-mass standard, as a reference. The new double-Penning trap mass spectrometer TRIGA-TRAP has been installed and commissioned within this thesis work, which is the very first experimental setup of this kind located at a nuclear reactor. New technical developments have been carried out such as a reliable non-resonant laser ablation ion source for the production of carbon cluster ions and are still continued, like a non-destructive ion detection technique for single-ion measurements. Neutron-rich fission products will be available by the reactor that are important for nuclear astrophysics, especially the r-process. Prior to the on-line coupling to the reactor, TRIGA-TRAP already performed off-line mass measurements on stable and long-lived isotopes and will continue this program. The main focus within this thesis was on certain rare-earth nuclides in the well-established region of deformation around N {proportional_to} 90. Another field of interest are mass measurements on actinoids to test mass models and to provide direct links to the mass standard. Within this thesis, the mass of {sup 241}Am could be measured directly for the first time. (orig.)

  7. Series resonance inverter with triggered vacuum gaps

    Damstra, Geert C.; Zhang, X.

    1994-05-01

    Series resonance inverters based on semi-conductor switching elements are well-known and have a wide range of application, mainly for lower voltages. For high voltage application many switching elements have to be put in series to obtain sufficient blocking voltage. Voltage grinding and multiple gate control elements are needed. There is much experience with the triggered vacuum gaps as high voltage/high current single shot elements, for example in reignition circuits for synthetic circuit breaker tests. These elements have a blocking voltage of 50 - 100 kV and are triggerable by a light fiber control device. A prototype inverter has been developed that generates 0.1 Hz, 30 kV AC voltages with a flat top for tests on cables and capacitors of many micro farads fed from a low voltage supply of about 600 V. Only two TVG elements are needed to switch the resonant circuit alternatively on the positive or negative supply. The resonant circuit itself consists of the capacitance of the testobject and a high quality inductor that determines the frequency and the peak current of the voltage reversing process.

  8. Time Series Momentum

    Moskowitz, Tobias J.; Ooi, Yao Hua; Heje Pedersen, Lasse

    2012-01-01

    We document significant “time series momentum” in equity index, currency, commodity, and bond futures for each of the 58 liquid instruments we consider. We find persistence in returns for one to 12 months that partially reverses over longer horizons, consistent with sentiment theories of initial...... under-reaction and delayed over-reaction. A diversified portfolio of time series momentum strategies across all asset classes delivers substantial abnormal returns with little exposure to standard asset pricing factors and performs best during extreme markets. Examining the trading activities...... of speculators and hedgers, we find that speculators profit from time series momentum at the expense of hedgers....

  9. Radiographic element

    Radiographic elements are disclosed comprised of first and second silver halide emulsion layers separated by an interposed support capable of transmitting radiation to which the second image portion is responsive. At least the first imaging portion contains a silver halide emulsion in which thin tubular silver halide grains of intermediate aspect ratios (from 5:1 to 8:1) are present. Spectral sensitizing dye is adsorbed to the surface of the tubular grains. Increased photographic speeds can be realized at comparable levels of crossover. (author)

  10. Thematic Unity Across a Video Game Series.

    Jason Brame

    2011-07-01

    Full Text Available Koji Kondo’s music is among the most recognized video game music ever written. As the composer for both Super Mario Bros. (Nintendo, 1984 and The Legend of Zelda (Nintendo, 1986, he has received international fame and recognition for his game compositions. With The Legend of Zelda series, Kondo has managed to create new music for each iteration of the series while maintaining a sense of unity across the series as a whole. Through the use of motivic and prolongational analysis, this article demonstrates how Kondo created this unity across the entire Zelda franchise, while making each game’s score unique by examining one musical element, the overworld theme, from each of the main entries in the Zelda series. A Schenkerian-like analysis is used to identify structural and motivic relationships between the various themes. This essay concludes with an examination of semiotic implications of this analysis and its impact on other aspects of the Zelda series and game music analysis as a whole. Using concepts from Barthes Elements of Semiology, I discuss the implication of the musical analysis to show how this approach can provide the basis for an in-depth look at musical signs in video games. In this discussion of thematic unity, I’m exploring both musical theme and a semiological theme.

  11. Historical Climatology Series

    National Oceanic and Atmospheric Administration, Department of Commerce — The Historical Climatology Series (HCS) is a set of climate-related publications published by NOAA's National Climatic Data Center beginning in 1978. HCS is...

  12. Multivariate Time Series Search

    National Aeronautics and Space Administration — Multivariate Time-Series (MTS) are ubiquitous, and are generated in areas as disparate as sensor recordings in aerospace systems, music and video streams, medical...

  13. Long time series

    Hisdal, H.; Holmqvist, E.; Hyvärinen, V.; Jónsson, P.; Kuusisto, E.; Larsen, S. E.; Lindström, G.; Ovesen, N. B.; Roald, L. A.

    Awareness that emission of greenhouse gases will raise the global temperature and change the climate has led to studies trying to identify such changes in long-term climate and hydrologic time series. This report, written by the......Awareness that emission of greenhouse gases will raise the global temperature and change the climate has led to studies trying to identify such changes in long-term climate and hydrologic time series. This report, written by the...

  14. Series connection of IGBT

    Nguyen, The Van; Jeannin, Pierre-Olivier; Vagnon, Eric; Frey, David; Crébier, Jean-Christophe

    2010-01-01

    International audience This article analyzes the effects of parasitic capacitances in the series connection of IGBT, which exist naturally due to gate driver and power circuit geometry. Two solutions, that can be combined, are proposed to minimize these effects in order to achieve a better voltage balancing. The first one is based on gate driver self-powering technique. The second one is based on a vertical structure assembly of IGBT connected in series. The performance offered by these tw...

  15. Superheavy elements

    Hofmann, S

    1999-01-01

    The outstanding aim of experimental investigations of heavy nuclei is the exploration of spherical 'SuperHeavy Elements' (SHEs). On the basis of the nuclear shell model, the next double magic shell-closure beyond sup 2 sup 0 sup 8 Pb is predicted at proton numbers between Z=114 and 126 and at neutron number N=184. All experimental efforts aiming at identifying SHEs (Z>=114) were negative so far. A highly sensitive search experiment was performed in November-December 1995 at SHIP. The isotope sup 2 sup 9 sup 0 116 produced by 'radiative capture' was searched for in the course of a 33 days irradiation of a sup 2 sup 0 sup 8 Pb target with sup 8 sup 2 Se projectiles, however, only cross-section limits were measured. Positive results were obtained in experiments searching for elements from 110 to 112 using cold fusion and the 1n evaporation channel. The produced isotopes were unambiguously identified by means of alpha-alpha correlations. Not fission, but alpha emission is the dominant decay mode. The measurement ...

  16. Multivariate Generalized Gram-Charlier Series in Vector Notations

    C, Dharmani Bhaveshkumar

    2015-01-01

    The article derives multivariate Generalized Gram-Charlier (GGC) series that expands an unknown joint probability density function (\\textit{pdf}) of a random vector in terms of the differentiations of the joint \\textit{pdf} of a reference random vector. Conventionally, the higher order differentiations of a multivariate \\textit{pdf} in GGC series will require multi-element array or tensor representations. But, the current article derives the GGC series in vector notations. The required higher...

  17. The elemental composition of the Sun I. The intermediate mass elements Na to Ca

    Scott, Pat; Grevesse, Nicolas; Asplund, Martin; Sauval, A. Jacques; Lind, Karin; Takeda, Yoichi; Collet, Remo; Trampedach, Regner; Hayek, Wolfgang

    2014-01-01

    The composition of the Sun is an essential piece of reference data for astronomy, cosmology, astroparticle, space and geo-physics. This article, dealing with the intermediate-mass elements Na to Ca, is the first in a series describing the comprehensive re-determination of the solar composition. In this series we severely scrutinise all ingredients of the analysis across all elements, to obtain the most accurate, homogeneous and reliable results possible. We employ a highly realistic 3D hydrod...

  18. Transition edge sensor series array bolometer

    A transition edge sensor series array (TES-SA) is an array of identical TESs that are connected in series by low-inductance superconducting wiring. The array elements are equally and well thermally coupled to the absorber and respond to changes in the absorber temperature in synchronization. The TES-SA total resistance increases compared to a single TES while the shape of the superconducting transition is preserved. We are developing a TES-SA with a large number, hundreds to thousands, of array elements with the goal of enabling the readout of a TES-based bolometer operated at 4.2 K with a semiconductor-based amplifier located at room temperature. The noise and dynamic performance of a TES-SA bolometer based on a niobium/aluminum bilayer is analyzed. It is shown that stable readout of the bolometer with a low-noise transimpedance amplifier is feasible.

  19. Visual time series analysis

    Fischer, Paul; Hilbert, Astrid

    2012-01-01

    We introduce a platform which supplies an easy-to-handle, interactive, extendable, and fast analysis tool for time series analysis. In contrast to other software suits like Maple, Matlab, or R, which use a command-line-like interface and where the user has to memorize/look-up the appropriate...... commands, our application is select-and-click-driven. It allows to derive many different sequences of deviations for a given time series and to visualize them in different ways in order to judge their expressive power and to reuse the procedure found. For many transformations or model-ts, the user may...... choose between manual and automated parameter selection. The user can dene new transformations and add them to the system. The application contains efficient implementations of advanced and recent techniques for time series analysis including techniques related to extreme value analysis and filtering...

  20. Heavy elements (I). From transuranium elements to superheavy elements

    History of the synthesis and discovery of heavy elements starting from 93 is reviewed. This article describes the story of thrilling competition for the discovery of new elements with increasing difficulties as the atomic number increases, beginning the 93 element, neptunium. Particularly, competition between USA and USSR has lasted from 102 to 106 element and was unsettled until a new aspect was developed in relation with the superheavy elements theoretically predicted. Here, the search of naturally occurring superheavy elements is briefly explained as an introduction to the present and future perspectives of the research on the superheavy elements which is appearing in the succeeding article. (author)

  1. Applied time series analysis

    Woodward, Wayne A; Elliott, Alan C

    2011-01-01

    ""There is scarcely a standard technique that the reader will find left out … this book is highly recommended for those requiring a ready introduction to applicable methods in time series and serves as a useful resource for pedagogical purposes.""-International Statistical Review (2014), 82""Current time series theory for practice is well summarized in this book.""-Emmanuel Parzen, Texas A&M University""What an extraordinary range of topics covered, all very insightfully. I like [the authors'] innovations very much, such as the AR factor table.""-David Findley, U.S. Census Bureau (retired)""…

  2. Time series analysis

    Madsen, Henrik

    2007-01-01

    ""In this book the author gives a detailed account of estimation, identification methodologies for univariate and multivariate stationary time-series models. The interesting aspect of this introductory book is that it contains several real data sets and the author made an effort to explain and motivate the methodology with real data. … this introductory book will be interesting and useful not only to undergraduate students in the UK universities but also to statisticians who are keen to learn time-series techniques and keen to apply them. I have no hesitation in recommending the book.""-Journa

  3. Rheumatoid Arthritis Educational Video Series

    Full Text Available ... Patient Webcasts / Rheumatoid Arthritis Educational Video Series Rheumatoid Arthritis Educational Video Series This series of five videos ... member of our patient care team. Managing Your Arthritis Managing Your Arthritis Managing Chronic Pain and Depression ...

  4. Rheumatoid Arthritis Educational Video Series

    ... Patient Webcasts / Rheumatoid Arthritis Educational Video Series Rheumatoid Arthritis Educational Video Series This series of five videos ... member of our patient care team. Managing Your Arthritis Managing Your Arthritis Managing Chronic Pain and Depression ...

  5. Rheumatoid Arthritis Educational Video Series

    Full Text Available ... Corner / Patient Webcasts / Rheumatoid Arthritis Educational Video Series Rheumatoid Arthritis Educational Video Series This series of five videos was designed to help you learn more about Rheumatoid Arthritis (RA). You will learn how the diagnosis of ...

  6. Continuously-variable series-elastic actuator.

    Mooney, Luke; Herr, Hugh

    2013-06-01

    Actuator efficiency is an important factor in the design of powered leg prostheses, orthoses, exoskeletons, and legged robots. A continuously-variable series-elastic actuator (CV-SEA) is presented as an efficient actuator for legged locomotion. The CV-SEA implements a continuously-variable transmission (CVT) between a motor and series elastic element. The CVT reduces the torque seen at the motor and allows the motor to operate in speed regimes of higher efficiency, while the series-elastic element efficiently stores and releases mechanical energy, reducing motor work requirements for actuator applications where an elastic response is sought. An energy efficient control strategy for the CV-SEA was developed using a Monte-Carlo minimization method that randomly generates transmission profiles and converges on those that minimize the electrical energy consumption of the motor. The CV-SEA is compared to a standard SEA and an infinitely variable series elastic actuator (IV-SEA). Simulations suggest that a CV-SEA will require less energy that an SEA or IV-SEA when used in a knee prosthesis during level-ground walking. PMID:24187221

  7. Methods to create series of technology

    R. Rząsiński

    2009-10-01

    Full Text Available Purpose: The main reason to commence research concerning new methods of transformation technology into structure was introduced in the process of creating ordered technologies on the basis of series of structure. The worked out datum for these methods is as elaborated ordered families of structure in the form of series of types or modular series of elements structure.Design/methodology/approach: This paper shows algorithmic understanding to get input data in the process of technology creation based on data of structure. Basic tool to realize data selection for the process of manufacture is the theory of technological similarity, algorithmic method and use of advanced graphic programme.Findings: The basic result of the analyzed problem is to realize relations between structure and technology for specified series of machine engines elements types. Moreover, the theory of technological similarity with its essential constituents which determine input date for selection processes algorythmisation of technological features on the basis of constructional features was introduced.Research limitations/implications: Analyzed methods develop algorythmisation of designing environment and support integration with the process preparing production. Further analyses will be carried out on in order to specify the theory of technological similarity in new forms of computer-aided (relational databases, theory of automatic classification.Practical implications: Described methods were developed based on practical examples of the technological module systems creation for hydraulic cylinders used in mining, slag cars used in metallurgy and series of gears types. The represented methods are applied to the unit’s types of hydraulic servo-motors used in mining.Originality/value: Method of the technological similarity, the algorithmic method and CAM method are the basis for selection of technological features in the process, which creates the as ordered technology

  8. Composition: Unity - Diversity series

    Bergstrøm-Nielsen, Carl

    2015-01-01

    Unity-Diversity series are open compositions to be realised by improvising musicians. See more about my composition practise in the entry "Composition - General Introduction". This work is licensed under a Creative Commons "by-nc" License. You may for non-commercial purposes use and distribute it...

  9. Lower GI Series

    ... more detailed view of the large intestine The health care provider and radiologist—a doctor who specializes in medical imaging— will ... the large intestine with the barium • if the health care provider has ... GI series, the radiologist will inject air through the tube to inflate ...

  10. Arithmetic hypergeometric series

    The main goal of this survey is to give common characteristics of auxiliary hypergeometric functions (and their generalisations), functions which occur in number-theoretic problems. Originally designed as a tool for solving these problems, the hypergeometric series have become a connecting link between different areas of number theory and mathematics in general. Bibliography: 183 titles.

  11. Impedance matching through a single passive fractional element

    Radwan, Ahmed Gomaa

    2012-07-01

    For the first time, a generalized admittance Smith chart theory is introduced to represent fractional order circuit elements. The principles of fractional order matching circuits are described. We show that for fractional order α < 1, a single parallel fractional element can match a wider range of load impedances as compared to its series counterpart. Several matching examples demonstrate the versatility of fractional order series and parallel element matching as compared to the conventional approach. © 2012 IEEE.

  12. Mechanical Analogies of Fractional Elements

    HU Kai-Xin; ZHU Ke-Qin

    2009-01-01

    A Fractional element model describes a special kind of viscoelastic material.Its stress is proportional to the fractional-order derivative of strain. Physically the mechanical analogies of fractional elements can be represented by spring-dashpot fractal networks. We introduce a constitutive operator in the constitutive equations of viscoelastic materials.To derive constitutive operators for spring-dashpot fractal networks, we use Heaviside operational calculus, which provides explicit answers not otherwise obtainable simply.Then the series-parallel formulas for the constitutive operator are derived. Using these formulas, a constitutive equation of fractional element with 1/2-order derivative is obtained.Finally we find the way to derive the constitutive equations with other fractional-order derivatives and their mechanical analogies.

  13. Causality between time series

    Liang, X San

    2014-01-01

    Given two time series, can one tell, in a rigorous and quantitative way, the cause and effect between them? Based on a recently rigorized physical notion namely information flow, we arrive at a concise formula and give this challenging question, which is of wide concern in different disciplines, a positive answer. Here causality is measured by the time rate of change of information flowing from one series, say, X2, to another, X1. The measure is asymmetric between the two parties and, particularly, if the process underlying X1 does not depend on X2, then the resulting causality from X2 to X1 vanishes. The formula is tight in form, involving only the commonly used statistics, sample covariances. It has been validated with touchstone series purportedly generated with one-way causality. It has also been applied to the investigation of real world problems; an example presented here is the cause-effect relation between two climate modes, El Ni\\~no and Indian Ocean Dipole, which have been linked to the hazards in f...

  14. Spacer for supporting fuel element boxes

    A spacer plate unit arranged externally on each side and at a predetermined level of a polygonal fuel element box for mutually supporting, with respect to one another, a plurality of the fuel element boxes forming a fuel element bundle, is formed of a first and a second spacer plate part each having the same length and the same width and being constituted of unlike first and second materials, respectively. The first and second spacer plate parts of the several spacer plate units situated at the predetermined level are arranged in an alternating continuous series when viewed in the peripheral direction of the fuel element box, so that any two spacer plate units belonging to face-to-face oriented sides of two adjoining fuel element boxes in the fuel element bundle define interfaces of unlike materials

  15. Cost calculation of constructions series of types

    P. Gendarz

    2010-05-01

    Full Text Available Purpose: The main aim of research was to elaborate methods to estimate costs in construction series of types production process.Design/methodology/approach: Based on manufacturing cost of one element it is possible to determine cost of other elements belonged to the same construction series of types. The four main cost estimating methods were distinguished. The first method is feature-based. The technological operations are dedicated to specified pieces of element. Cost manufacturing of every piece is specified. Based on elementary costs the manufacturing cost of whole part is calculated. The second method uses construction similarity theory. The selected part manufacturing costs are functionally depended on main part manufacturing costs. The CAM method is based on time calculation from manufacturing process simulation. The simplified method uses normalized masses of analyzed parts pieces. The balance coefficients of those pieces are specified.Findings: Manufacturing cost estimation methods were analyzed. Those methods are based on construction and manufacturing technology. The main conclusion is that CAM method is most accurate.Research limitations/implications: The CAM method is limited to analyze only manufacturing process based on numerically controlled machines. The Feature-based method require developed database for analyzed part family.Practical implications: Presented method was applied in hydraulic props manufacturing cost analysis.Originality/value: Described analysis puts together and compares different cost estimating methods which allows choosing most suitable method for analyzed manufacturing process.

  16. New elements - approaching Z=114

    The search for new elements is part of the broader field of investigations of nuclei at the limits of stability. In two series of experiments at SHIP, six new elements (Z=107-112) were synthesized via fusion reactions using 1n-deexcitation channels and lead or bismuth targets. The isotopes were unambiguously identified by means of α-α correlations. Not fission, but alpha decay is the dominant decay mode. The collected decay data establish a means of comparison with theoretical data. This aids in the selection of appropriate models that describe the properties of known nuclei. Predictions based on these models are useful in the preparation of the next generation of experiments. Cross-sections decrease by two orders of magnitude from bohrium (Z=107) to element 112, for which a cross-section of 1 pb was measured. The development of intense beam currents and sensitive detection methods is essential for the production and identification of still heavier elements and new isotopes of already known elements, as well as the measurement of small α-, β- and fission-branching ratios. An equally sensitive set-up is needed for the measurement of excitation functions at low cross-sections. Based on our results, it is likely that the production of isotopes of element 114 close to the island of spherical super heavy elements (SHE) could be achieved by fusion reactions using 208Pb targets. Systematic studies of the reaction cross-sections indicate that the transfer of nucleons is an important process for the initiation of fusion. The data allow for the fixing of a narrow energy window for the production of SHE using 1n-emission channels. (orig.)

  17. New elements - approaching Z=114

    Hofmann, S.

    1998-03-01

    The search for new elements is part of the broader field of investigations of nuclei at the limits of stability. In two series of experiments at SHIP, six new elements (Z=107-112) were synthesized via fusion reactions using 1n-deexcitation channels and lead or bismuth targets. The isotopes were unambiguously identified by means of {alpha}-{alpha} correlations. Not fission, but alpha decay is the dominant decay mode. The collected decay data establish a means of comparison with theoretical data. This aids in the selection of appropriate models that describe the properties of known nuclei. Predictions based on these models are useful in the preparation of the next generation of experiments. Cross-sections decrease by two orders of magnitude from bohrium (Z=107) to element 112, for which a cross-section of 1 pb was measured. The development of intense beam currents and sensitive detection methods is essential for the production and identification of still heavier elements and new isotopes of already known elements, as well as the measurement of small {alpha}-, {beta}- and fission-branching ratios. An equally sensitive set-up is needed for the measurement of excitation functions at low cross-sections. Based on our results, it is likely that the production of isotopes of element 114 close to the island of spherical super heavy elements (SHE) could be achieved by fusion reactions using {sup 208}Pb targets. Systematic studies of the reaction cross-sections indicate that the transfer of nucleons is an important process for the initiation of fusion. The data allow for the fixing of a narrow energy window for the production of SHE using 1n-emission channels. (orig.)

  18. New elements - approaching Z = 114

    The search for new elements is part of the broader field of investigations of nuclei at the limits of stability. In two series of experiments at SHIP, six new elements (Z = 107-112) were synthesized via fusion reactions using 1n-deexcitation channels and lead or bismuth targets. The isotopes were unambiguously identified by means of α-α correlations. Alpha decay, not fission, is the dominant decay mode. The collected decay data establish a means of comparison with theoretical data. This aids in the selection of appropriate models that describe the properties of known nuclei. Predictions based on these models are useful in the preparation of the next generation of experiments. Cross sections decrease by two orders of magnitude from bohrium (Z = 107) to element 112, for which a cross section of 1 pb was measured. The development of intense beam currents and sensitive detection methods is essential for the production and identification of still heavier elements and new isotopes of already known elements, as well as the measurement of small α-, β- and fission-branching ratios. An equally sensitive set-up is needed for the measurement of excitation functions at low cross sections. Based on our results, it is likely that the production of isotopes of element 114 close to the island of spherical superheavy elements (SHEs) could be achieved by fusion reactions using 208Pb targets. Systematic studies of the reaction cross sections indicate that the transfer of nucleons is an important process for the initiation of fusion. The data allow for the fixing of a narrow energy window for the production of SHEs using 1n-emission channels. The likelihood of broadening the energy window by investigation of radiative capture reactions, use of neutron deficient projectile isotopes and use of actinide targets is discussed. (author)

  19. Rheumatoid Arthritis Educational Video Series

    Full Text Available ... Rheumatoid Arthritis Educational Video Series This series of five videos was designed to help you learn more ... Patients from Johns Hopkins Stategies to Increase your Level of Physical Activity Role of Body Weight in ...

  20. GPS Position Time Series @ JPL

    Owen, Susan; Moore, Angelyn; Kedar, Sharon; Liu, Zhen; Webb, Frank; Heflin, Mike; Desai, Shailen

    2013-01-01

    Different flavors of GPS time series analysis at JPL - Use same GPS Precise Point Positioning Analysis raw time series - Variations in time series analysis/post-processing driven by different users. center dot JPL Global Time Series/Velocities - researchers studying reference frame, combining with VLBI/SLR/DORIS center dot JPL/SOPAC Combined Time Series/Velocities - crustal deformation for tectonic, volcanic, ground water studies center dot ARIA Time Series/Coseismic Data Products - Hazard monitoring and response focused center dot ARIA data system designed to integrate GPS and InSAR - GPS tropospheric delay used for correcting InSAR - Caltech's GIANT time series analysis uses GPS to correct orbital errors in InSAR - Zhen Liu's talking tomorrow on InSAR Time Series analysis

  1. Series of Reciprocal Triangular Numbers

    Bruckman, Paul; Dence, Joseph B.; Dence, Thomas P.; Young, Justin

    2013-01-01

    Reciprocal triangular numbers have appeared in series since the very first infinite series were summed. Here we attack a number of subseries of the reciprocal triangular numbers by methodically expressing them as integrals.

  2. Resumming QCD perturbation series

    Since the advent of Quantum Field Theory (QFT) in the late 1940's, perturbation theory has become one of the most developed and successful means of extracting phenomenologically useful information from a QFT. In the ever-increasing enthusiasm for new phenomonological predictions, the mechanics of perturbation theory itself have often taken a back seat. It is in this light that this thesis aims to investigate some of the more fundamental properties of perturbation theory. The benefits of resumming perturbative series are highlighted by the explicit calculation of the three-jet rate in e+e- annihilation, resummed to all orders in leading and next-to-leading large algorithms. It is found that the result can be expressed simply in terms of exponentials and error functions. (author)

  3. Globe: Lecture series

    2007-01-01

    The LHC: an accelerator of science This series of lectures is all about understanding the scientific and technological challenges of the phenomenal LHC project and assessing its innovations through their everyday applications. Come and take a sneak preview of the LHC! Communicate: the Grid, a computer of global dimensions François Grey, head of communication in CERN’s Information Technology Department How will it be possible for the 15 million billion bytes of data generated by the LHC every year to be handled and stored by a computer that doesn’t have to be the size of a skyscraper? The computer scientists have the answer: the Grid, which will harness the power of tens of thousands of computers all over the world by creating a network of computers and making them operate as one. >>> Lectures are free and require no specialist knowledge. In french. 
 >>> By reservation only: tel. +41 (0)22 767 76 76

  4. Harmonic Series Meets Fibonacci Sequence

    Chen, Hongwei; Kennedy, Chris

    2012-01-01

    The terms of a conditionally convergent series may be rearranged to converge to any prescribed real value. What if the harmonic series is grouped into Fibonacci length blocks? Or the harmonic series is arranged in alternating Fibonacci length blocks? Or rearranged and alternated into separate blocks of even and odd terms of Fibonacci length?

  5. The diagram for phyllotactic series

    Joanna Szymanowska-Pułka

    2014-02-01

    Full Text Available Many authors studying phyllotaxis in various plant species have reported the occurrence of many different numbers of contact parastichy pairs that are members of different Fibonacci-like series. On the basis of these reports a diagram was constructed in which any theoretically possible series was represented by the two first members of a given series.

  6. On everywhere divergence of trigonometric Fourier series

    The following theorem is established. Theorem. Let a function φ:[0,+∞)→[0,+∞) and a sequence {ψ(m)} satisfy the following condition: the function φ(u)/u is non-decreasing on (0,+∞), ψ(m)≥1 (m=1,2,...) and φ(m)ψ(m)=o(m√ln m / √ln ln m) as m→∞. Then there is a function f element of L[-π,π] such that ∫-ππφ(|f(x)|) dxm→∞Sm(f,x)/ψ(m)=∞ for all x element of [-π,π] here Sm(f) is the m-th partial sum of the trigonometric Fourier series of f

  7. Discrete Element Modeling

    Morris, J; Johnson, S

    2007-12-03

    The Distinct Element Method (also frequently referred to as the Discrete Element Method) (DEM) is a Lagrangian numerical technique where the computational domain consists of discrete solid elements which interact via compliant contacts. This can be contrasted with Finite Element Methods where the computational domain is assumed to represent a continuum (although many modern implementations of the FEM can accommodate some Distinct Element capabilities). Often the terms Discrete Element Method and Distinct Element Method are used interchangeably in the literature, although Cundall and Hart (1992) suggested that Discrete Element Methods should be a more inclusive term covering Distinct Element Methods, Displacement Discontinuity Analysis and Modal Methods. In this work, DEM specifically refers to the Distinct Element Method, where the discrete elements interact via compliant contacts, in contrast with Displacement Discontinuity Analysis where the contacts are rigid and all compliance is taken up by the adjacent intact material.

  8. New elements - approaching Z = 114

    Hofmann, S. [Gesellschaft fuer Schwerionenforschung (GSI), Darmstadt (Germany)

    1998-06-01

    The search for new elements is part of the broader field of investigations of nuclei at the limits of stability. In two series of experiments at SHIP, six new elements (Z = 107-112) were synthesized via fusion reactions using 1n-deexcitation channels and lead or bismuth targets. The isotopes were unambiguously identified by means of {alpha}-{alpha} correlations. Alpha decay, not fission, is the dominant decay mode. The collected decay data establish a means of comparison with theoretical data. This aids in the selection of appropriate models that describe the properties of known nuclei. Predictions based on these models are useful in the preparation of the next generation of experiments. Cross sections decrease by two orders of magnitude from bohrium (Z = 107) to element 112, for which a cross section of 1 pb was measured. The development of intense beam currents and sensitive detection methods is essential for the production and identification of still heavierelements and new isotopes of already known elements, as well as the measurement of small {alpha}-, {beta}- and fission-branching ratios. An equally sensitive set-up is needed for the measurement of excitation functions at low cross sections. Based on our results, it is likely that the production of isotopes of element 114 close to the island of spherical superheavy elements (SHEs) could be achieved by fusion reactions using {sup 208}Pb targets. Systematic studies of the reaction cross sections indicate that the transfer of nucleons is an important process for the initiation of fusion. The data allow for the fixing of a narrow energy window for the production of SHEs using 1n-emission channels. The likelihood of broadening the energy window by investigation of radiative capture reactions, use of neutron deficient projectile isotopes and use of actinide targets is discussed. (author)

  9. New elements produced at GSI

    Hofmann, Sigurd

    1998-12-01

    In two series of experiments at SHIP, six new elements (Z=107-112) were synthesized via fusion reactions using lead or bismuth targets and 1n-deexcitation channels. The isotopes were unambiguously identified by means of α-α correlations. Not fission, but alpha decay is the dominant decay mode. Cross-sections decrease by two orders of magnitude from bohrium (Z=107) to element 112, for which a cross-section of 1 pb was measured. Based on our results, it is likely that the production of isotopes of element 114 close to the island of spherical SuperHeavy Elements (SHE) could be achieved by fusion reactions using 208Pb targets. Systematic studies of the reaction cross-sections indicate that the transfer of nucleons is an important process for the initiation of fusion. The data allow for the fixing of a narrow energy window for the production of SHE using 1n-emission channels. The likelihood of broadening the energy window by investigation of radiative capture reactions, use of neutron deficient projectile isotopes and use of actinide targets is discussed.

  10. New elements produced at GSI

    In two series of experiments at SHIP, six new elements (Z=107-112) were synthesized via fusion reactions using lead or bismuth targets and 1n-deexcitation channels. The isotopes were unambiguously identified by means of α-α correlations. Not fission, but alpha decay is the dominant decay mode. Cross-sections decrease by two orders of magnitude from bohrium (Z=107) to element 112, for which a cross-section of 1 pb was measured. Based on our results, it is likely that the production of isotopes of element 114 close to the island of spherical SuperHeavy Elements (SHE) could be achieved by fusion reactions using 208Pb targets. Systematic studies of the reaction cross-sections indicate that the transfer of nucleons is an important process for the initiation of fusion. The data allow for the fixing of a narrow energy window for the production of SHE using 1n-emission channels. The likelihood of broadening the energy window by investigation of radiative capture reactions, use of neutron deficient projectile isotopes and use of actinide targets is discussed

  11. Electron backscattering rates of light elements in Moliere approximation

    Electron backscattering rates of light elements (atomic number Z = 6, 13, 29) are evaluated for electron energies of E = 20 ... 60 keV. The scattering amplitude in Moliere approximation is expanded as a series. The series elements are calculated in closed form with the aid of substitute functions. By comparison with the first Born approximation this yields correction factors of 1 ... 1,25. (orig.) 891 WBU

  12. Modelling bursty time series

    Many human-related activities show power-law decaying interevent time distribution with exponents usually varying between 1 and 2. We study a simple task-queuing model, which produces bursty time series due to the non-trivial dynamics of the task list. The model is characterized by a priority distribution as an input parameter, which describes the choice procedure from the list. We give exact results on the asymptotic behaviour of the model and we show that the interevent time distribution is power-law decaying for any kind of input distributions that remain normalizable in the infinite list limit, with exponents tunable between 1 and 2. The model satisfies a scaling law between the exponents of interevent time distribution (β) and autocorrelation function (α): α + β = 2. This law is general for renewal processes with power-law decaying interevent time distribution. We conclude that slowly decaying autocorrelation function indicates long-range dependence only if the scaling law is violated. (paper)

  13. Nonketotic hyperglycinemia case series

    Mehtab Iqbal

    2015-01-01

    Full Text Available To present three cases who presented with neonatal hiccups and who were later diagnosed with nonketotic hyperglycinemia (NKH. Case series. We present three babies who presented in neonatal life with hiccups who later were diagnosed with NKH. Two babies presented on the 2nd day of life with hypotonia, poor feeding, and abnormal movements including jitteriness, hiccups, and twitching. The third baby only had transient hiccups lasting for a couple of days in the 1st week of life but later presented at 3 months of age with poor feeding, drowsiness, and jerky movements. All three cases needed extensive investigations before reaching the diagnosis including metabolic screen, lumbar puncture, electroencephalography, and computed tomography/magnetic resonance imaging. The first two babies needed intubation on their 2nd day of life because of apneas in whom later, the care was withdrawn after reaching the diagnosis of NKH because of poor prognosis. The third baby was discharged home on oral dextromethorphan and ketogenic diet. We discuss the importance of early recognition of symptoms (frequent hiccups and investigation needed to reach the diagnosis early as it helps in making decision to either carry on treatment or withdraw care because of poor prognosis. It also helps in genetic counseling and prenatal diagnosis can be offered at the subsequent pregnancy.

  14. Analytical series representing DE431 ephemerides of terrestrial planets

    Kudryavtsev, Sergey M.

    2016-03-01

    This paper describes the new analytical series DEA431, which comprise orbital elements of terrestrial planets obtained from the long-term numerical ephemerides DE431. The series are obtained from a modified frequency analysis of the ephemerides over 30 000 yr [-13 000, 17 000], the total time interval covered by DE431. Unlike the procedure involving classical Fourier analysis, the development here is made to trigonometric series in which both the amplitudes and the arguments of the series terms are high-degree polynomials of time. A comparison of the new series with those given by the most accurate analytical theory of planetary motion VSOP2013 is performed. The two analytical solutions find very similar major fundamental frequencies of planetary motion; however, the number of terms for orbital elements in the DEA431 development is about one order of magnitude lower than that in the VSOP2013 theory. VSOP2013 is still the best analytical solution when predicting the motion of terrestrial planets over 100 years or so, but DEA431 gives a much better prediction over long intervals, up to several tens of thousands of years. Over 24 000 yr centred at epoch J2000, the maximum differences between the rectangular ecliptic coordinates of terrestrial planets calculated using the DEA431 analytical series and the corresponding coordinates given by DE431 numerical ephemerides are 0.5 km for Mercury, 14.0 km for Venus, 12.7 km for the Earth-Moon barycentre, and 76.5 km for Mars. All coefficients of the DEA431 series and FORTRAN routines for calculating both orbital elements and rectangular coordinates of the terrestrial planets on the basis of the new series are available on the SAI web-server.

  15. The Ekamanganese elements

    A recent study tends to revalidate the search for element 43 done in 1925. In ores with properties similar to the hypothetical chemical properties of the missing elements 43 and 75, the unknown elements were concentrated by chemical means. Roentgen-ray spectroscopy was applied in order to observe the characteristic Roentgen L lines for element 75 and K lines for element 43. Element 43 was observed in sperrylith, gadolinit, fergusonit and columbit. The name masurium was proposed. Similarly, element 75 was observed in tantalit, wolframit and platinit. The name rhenium was chosen. (MCB)

  16. SHAG test series

    This report describes the investigation, results, and conclusions of the INEL effort to determine the cause of the reduced performance of a naturally aged Crane gate valve with a Limitorque motor operator. The motor-operated valve served 25 years in the Shippingport Atomic Power Station as a feedwater isolation valve before being refurbished and installed in a piping system in the Heissdampfreaktor (HDR), where valve operability in typical pressure and temperature environments and during simulated earthquakes was studied. During the test program it was discovered that under some valve hydraulic loadings the motor operator failed to reach torque levels high enough to open the closing torque switch. Failure of the torque switch to open caused the motor to go into a stall. In normal plant service, stalling an operator motor can cause motor burnout and render the valve inoperable for subsequent safety functions. The investigation concluded that the poor performance of the valve was caused by heating of the motor windings and by external circuit resistance, both of which prevented the motor from developing its rated torque. The investigations also identified torque spring aging as a problem. This document, Volume 2 of this report contains Appendices A through E, which present details and specifics of the tests and results reported in Volume 1. Appendix A, the value anomaly appendix, is a copy of the report that describes the investigation, results, and conclusions of the INEL effort to determine the cause of the reduced performance of a naturally aged Crane gated valve with a Limitorque motor operator. Appendix B describes the VKL instrumentation for the SHAG test series. Appendices C and D provide supplementary information regarding snubbers and transducers used in the HDR tests. Appendix E discusses the analyses of the frequency response functions recorded during the HDR testing

  17. Bootstrapping High Dimensional Time Series

    Zhang, Xianyang; Cheng, Guang

    2014-01-01

    This article studies bootstrap inference for high dimensional weakly dependent time series in a general framework of approximately linear statistics. The following high dimensional applications are covered: (1) uniform confidence band for mean vector; (2) specification testing on the second order property of time series such as white noise testing and bandedness testing of covariance matrix; (3) specification testing on the spectral property of time series. In theory, we first derive a Gaussi...

  18. Autoencoding Time Series for Visualisation

    Gianniotis, Nikolaos; Kügler, Dennis; Tino, Peter; Polsterer, Kai; Misra, Ranjeev

    2015-01-01

    We present an algorithm for the visualisation of time series. To that end we employ echo state networks to convert time series into a suitable vector representation which is capable of capturing the latent dynamics of the time series. Subsequently, the obtained vector representations are put through an autoencoder and the visualisation is constructed using the activations of the bottleneck. The crux of the work lies with defining an objective function that quantifies the reconstruction error ...

  19. FROG: Time-series analysis

    Allan, Alasdair

    2014-06-01

    FROG performs time series analysis and display. It provides a simple user interface for astronomers wanting to do time-domain astrophysics but still offers the powerful features found in packages such as PERIOD (ascl:1406.005). FROG includes a number of tools for manipulation of time series. Among other things, the user can combine individual time series, detrend series (multiple methods) and perform basic arithmetic functions. The data can also be exported directly into the TOPCAT (ascl:1101.010) application for further manipulation if needed.

  20. From Fourier Series to Rapidly Convergent Series for Zeta(3)

    Scheufens, Ernst E

    2011-01-01

    The article presents a mathematical study which investigates the exact values of the Riemann zeta (ζ) function. It states that exact values can be determined from Fourier series for periodic versions of even power functions. It notes that using power series for logarithmic functions on this such...

  1. Conductance of quantum interference transistors in parallel and in series

    Nikolić, K.; Nikolić, P.; Šordan, R.

    1999-07-01

    We theoretically study the electronic conductance G and the current-voltage characteristics of two quantum interference transistors in parallel and in series. We use two different definitions of conductance, G ˜ T and G ˜ T / R. Neither can reproduce the classical additivity law in the case of coherent transport due to quantum interference for the elements in series and quasibound states when elements are in parallel. In the case of two transistors in series, we find that the quantity T / R only qualitatively better represents the additivity law, which is probably expected because this model avoids counting the contact resistance twice. However, for the parallel configuration of transistors, the conductance is almost additive for the majority of energies when G ˜ T, except for the single-mode regime. Possible use of these configurations in digital electronics for basic logic functions is discussed.

  2. Benchmarking the QUAD4/TRIA3 element

    Pitrof, Stephen M.; Venkayya, Vipperla B.

    1993-09-01

    The QUAD4 and TRIA3 elements are the primary plate/shell elements in NASTRAN. These elements enable the user to analyze thin plate/shell structures for membrane, bending and shear phenomena. They are also very new elements in the NASTRAN library. These elements are extremely versatile and constitute a substantially enhanced analysis capability in NASTRAN. However, with the versatility comes the burden of understanding a myriad of modeling implications and their effect on accuracy and analysis quality. The validity of many aspects of these elements were established through a series of benchmark problem results and comparison with those available in the literature and obtained from other programs like MSC/NASTRAN and CSAR/NASTRAN. Never-the-less such a comparison is never complete because of the new and creative use of these elements in complex modeling situations. One of the important features of QUAD4 and TRIA3 elements is the offset capability which allows the midsurface of the plate to be noncoincident with the surface of the grid points. None of the previous elements, with the exception of bar (beam), has this capability. The offset capability played a crucial role in the design of QUAD4 and TRIA3 elements. It allowed modeling layered composites, laminated plates and sandwich plates with the metal and composite face sheets. Even though the basic implementation of the offset capability is found to be sound in the previous applications, there is some uncertainty in relatively simple applications. The main purpose of this paper is to test the integrity of the offset capability and provide guidelines for its effective use. For the purpose of simplicity, references in this paper to the QUAD4 element will also include the TRIA3 element.

  3. Benchmarking the QUAD4/TRIA3 element

    Pitrof, Stephen M.; Venkayya, Vipperla B.

    1993-01-01

    The QUAD4 and TRIA3 elements are the primary plate/shell elements in NASTRAN. These elements enable the user to analyze thin plate/shell structures for membrane, bending and shear phenomena. They are also very new elements in the NASTRAN library. These elements are extremely versatile and constitute a substantially enhanced analysis capability in NASTRAN. However, with the versatility comes the burden of understanding a myriad of modeling implications and their effect on accuracy and analysis quality. The validity of many aspects of these elements were established through a series of benchmark problem results and comparison with those available in the literature and obtained from other programs like MSC/NASTRAN and CSAR/NASTRAN. Never-the-less such a comparison is never complete because of the new and creative use of these elements in complex modeling situations. One of the important features of QUAD4 and TRIA3 elements is the offset capability which allows the midsurface of the plate to be noncoincident with the surface of the grid points. None of the previous elements, with the exception of bar (beam), has this capability. The offset capability played a crucial role in the design of QUAD4 and TRIA3 elements. It allowed modeling layered composites, laminated plates and sandwich plates with the metal and composite face sheets. Even though the basic implementation of the offset capability is found to be sound in the previous applications, there is some uncertainty in relatively simple applications. The main purpose of this paper is to test the integrity of the offset capability and provide guidelines for its effective use. For the purpose of simplicity, references in this paper to the QUAD4 element will also include the TRIA3 element.

  4. A COMBINED HYBRID FINITE ELEMENT METHOD FOR PLATE BENDING PROBLEMS

    Tian-xiao Zhou; Xiao-ping Xie

    2003-01-01

    In this paper, a combined hybrid method is applied to finite element discretization ofplate bending problems. It is shown that the resultant schemes are stabilized, i.e., theconvergence of the schemes is independent of inf-sup conditions and any other patch test.Based on this, two new series of plate elements are proposed.

  5. Fuel element design handbook

    Merckx, K.R.

    1958-09-01

    The economic development of nuclear reactors depends upon the integrated progress in the fields of reactor design, fuel element design, reactor operation, and fuel production and separation. Broad criteria, which restrict the fuel element design, are determined by the mutual consideration of the problems encountered in all the above fields. Hence, no stage of reactor design or operation is independent of the fuel element problem, nor can the fuel element designer disregard the interest of any one field. As an introduction to the fuel element design problem, this chapter describes how the general criteria for a fuel element are determined.

  6. Introduction to the finite element method in electromagnetics

    Polycarpou, Anastasis

    2006-01-01

    This series lecture is an introduction to the finite element method with applications in electromagnetics. The finite element method is a numerical method that is used to solve boundary-value problems characterized by a partial differential equation and a set of boundary conditions. The geometrical domain of a boundary-value problem is discretized using sub-domain elements, called the finite elements, and the differential equation is applied to a single element after it is brought to a "weak" integro-differential form. A set of shape functions is used to represent the primary unknown variable

  7. Advances in time series forecasting

    Cagdas, Hakan Aladag

    2012-01-01

    Readers will learn how these methods work and how these approaches can be used to forecast real life time series. The hybrid forecasting model is also explained. Data presented in this e-book is problem based and is taken from real life situations. It is a valuable resource for students, statisticians and working professionals interested in advanced time series analysis.

  8. Complex Landscape Terms in Seri

    O'Meara, Carolyn; Bohnemeyer, Jurgen

    2008-01-01

    The nominal lexicon of Seri is characterized by a prevalence of analytical descriptive terms. We explore the consequences of this typological trait in the landscape domain. The complex landscape terms of Seri classify geographic entities in terms of their material make-up and spatial properties such as shape, orientation, and merological…

  9. A TV Series Starring Science.

    Thomson, Peggy

    1980-01-01

    The Children's Television Workshop "3-2-1 Contact" project is a series of documentary programs on science and technology subjects aimed at 8- to 12-year-olds. Based on research on children's television viewing, the series attempts to pique children's interest, alter their stereotypes of scientists, and attract them to the experience of scientific…

  10. National Security Series, User's Guide.

    Jones, Saundra L.

    This document is a guide to using the "National Security Series", which consists of seven books designed for teaching about national security issues in high school social studies classes. Five of the series books contain lessons designed to supplement specific courses by relating national security issues to U.S. government, U.S. history,…

  11. Convergence of a Catalan Series

    Koshy, Thomas; Gao, Zhenguang

    2012-01-01

    This article studies the convergence of the infinite series of the reciprocals of the Catalan numbers. We extract the sum of the series as well as some related ones, illustrating the power of the calculus in the study of the Catalan numbers.

  12. The Synthesis of Superheavy Elements

    The elements with the atomic numbers 107-112 have been synthesized and unambiguously identified at the velocity filter SHIP at GSI. The technique allowing for this successful experimental program is the combination of the detection of correlations between evaporation residues and subsequent a-decays with a powerful separator. Systematic investigations, the construction of decay chain networks and mass measurements are some of the possible approaches to study the decay chains tentatively attributed to the isotopes of the elements 114 and 116 at Dubna, which are, in contrast to those observed at GSI, not connected to α-decays of known isotopes. The sensitivity limit of the set-up at GSI has reached the 1pb level. For systematic investigation in this region of extremely low cross section and to synthesize nuclei of higher Z this limit has to be pushed to even lower values. An extensive development program is pursued at SHIP in order to reach at least an order of magnitude lower cross sections. Apart from target cooling and separator development a super conducting CW linear accelerator is studied to reach this goal. To design a successful experimental program for the possible discovery of new elements the nuclear structure of the heaviest nuclei has to be understood as well as the reaction mechanism which leads to their production in heavy ion reactions. We have initiated series of systematic studies for both subjects

  13. Data Element Registry Services

    U.S. Environmental Protection Agency — Data Element Registry Services (DERS) is a resource for information about value lists (aka code sets / pick lists), data dictionaries, data elements, and EPA data...

  14. Stress and Deformation Analysis in Base Isolation Elements Using the Finite Element Method

    Claudiu Iavornic; Gilbert-Rainer Gillich; Vasile Iancu; Zeno-Iosif Praisach; Ovidiu Vasile

    2011-01-01

    In Modern tools as Finite Element Method can be used to study the behavior of elastomeric isolation systems. The simulation results obtained in this way provide a large series of data about the behavior of elastomeric isolation bearings under different types of loads and help in taking right decisions regarding geometrical optimizations needed for improve such kind of devices.

  15. Stress and Deformation Analysis in Base Isolation Elements Using the Finite Element Method

    Claudiu Iavornic

    2011-01-01

    Full Text Available In Modern tools as Finite Element Method can be used to study the behavior of elastomeric isolation systems. The simulation results obtained in this way provide a large series of data about the behavior of elastomeric isolation bearings under different types of loads and help in taking right decisions regarding geometrical optimizations needed for improve such kind of devices.

  16. Urban series automatic vending machine; Urban series jido hanbaiki

    NONE

    2000-01-10

    In place of the 'Phase II' series automatic vending machine for exclusively indoor use with interior decoration design, which has enjoyed good reputation, development was made on a new series having been completely changed in its design concept. Its major features are as follows: (1) the new series has added vending machine lines for cans, cups and paper-packs; (2) adoption was made on construction that allows outdoor installation matching with scenery in addition to the indoor installation (only for cans and cigarettes); (3) adoption was made on removable panels that will coordinate with the environment of installation; and (4) either a one-thousand yen note or a card can be used on the same machine. The new series has also acquired good reputation because of its design that machines can be installed in any place, diverse kinds of merchandises can be handled, and the energy saving function has been improved. (translated by NEDO)

  17. Models for dependent time series

    Tunnicliffe Wilson, Granville; Haywood, John

    2015-01-01

    Models for Dependent Time Series addresses the issues that arise and the methodology that can be applied when the dependence between time series is described and modeled. Whether you work in the economic, physical, or life sciences, the book shows you how to draw meaningful, applicable, and statistically valid conclusions from multivariate (or vector) time series data.The first four chapters discuss the two main pillars of the subject that have been developed over the last 60 years: vector autoregressive modeling and multivariate spectral analysis. These chapters provide the foundational mater

  18. Autoencoding Time Series for Visualisation

    Gianniotis, Nikolaos; Tino, Peter; Polsterer, Kai; Misra, Ranjeev

    2015-01-01

    We present an algorithm for the visualisation of time series. To that end we employ echo state networks to convert time series into a suitable vector representation which is capable of capturing the latent dynamics of the time series. Subsequently, the obtained vector representations are put through an autoencoder and the visualisation is constructed using the activations of the bottleneck. The crux of the work lies with defining an objective function that quantifies the reconstruction error of these representations in a principled manner. We demonstrate the method on synthetic and real data.

  19. Time Series with Tailored Nonlinearities

    Raeth, C

    2015-01-01

    It is demonstrated how to generate time series with tailored nonlinearities by inducing well- defined constraints on the Fourier phases. Correlations between the phase information of adjacent phases and (static and dynamic) measures of nonlinearities are established and their origin is explained. By applying a set of simple constraints on the phases of an originally linear and uncor- related Gaussian time series, the observed scaling behavior of the intensity distribution of empirical time series can be reproduced. The power law character of the intensity distributions being typical for e.g. turbulence and financial data can thus be explained in terms of phase correlations.

  20. Rare (Earth Elements [score

    Camilo Méndez

    2014-12-01

    Full Text Available Rare (Earth Elements is a cycle of works for solo piano. The cycle was inspired by James Dillon’s Book of Elements (Vol. I-V. The complete cycle will consist of 14 pieces; one for each selected rare (earth element. The chosen elements are Neodymium, Erbium, Tellurium, Hafnium, Tantalum, Technetium, Indium, Dysprosium, Lanthanium, Cerium, Europium, Terbium, Yttrium and Darmstadtium. These elements were selected due to their special atomic properties that in many cases make them extremely valuable for the development of new technologies, and also because of their scarcity. To date, only 4 works have been completed Yttrium, Technetium, Indium and Tellurium.

  1. Lower GI Series (Barium Enema)

    ... barium into a bedpan or nearby toilet. A health care professional may give you an enema to flush out the rest of the barium. An x-ray technician and a radiologist perform a lower gastrointestinal (GI) series at a ...

  2. Rheumatoid Arthritis Educational Video Series

    Full Text Available ... of Body Weight in Osteoarthritis Educational Videos for Patients Rheumatoid Arthritis Educational Video Series Psoriatic Arthritis 101 ... Patient to an Adult Rheumatologist Drug Information for Patients Arthritis Drug Information Sheets Benefits and Risks of ...

  3. Accounting Issues: An Essay Series Part I--Introduction to Accounting Theory and Cash

    Laux, Judy

    2007-01-01

    Recent accounting scandals challenge academics to refocus the educational process on the theoretical underpinnings of accounting. This is the first in a series of articles designed to facilitate this realignment. Intended as a supplement for the introductory accounting course, the essay series connects each of the primary accounting elements to…

  4. Techniques for the discovery of new elements

    Search for new elements is part of the broader field of investigations of nuclei at the limits of stability. In two series of experiments at SHIP, six new elements (Z=107-112) were synthesized via fusion reactions by 1n-deexcitation channels using lead or bismuth targets. The isotopes were unambiguously identified by means of αα correlations. Alpha decay, and not fission, is the dominant decay mode due to strong shell effects. Cross sections drop by two orders of magnitude from nielsbohrium (Z=107) to element 112, for which a cross section of 1 pb was measured. The development of intensive beam currents and sensitive detection methods is a necessity, aiming at production and identification of still heavier elements and new isotopes of already known elements, as well as small α-, β- and fission-branching ratios. An equally sensitive set-up is needed for measurement of excitation functions at low cross sections. Our results give hope that isotopes of element 114 close to the island of spherical superheavy elements could be produced by fusion reactions using 208Pb or 209Bi targets. Systematic studies of the reaction cross sections indicate that transfer of nucleons is the important process to initiate the fusion process. (orig.)

  5. Techniques for the discovery of new elements

    Hofmann, S.

    Search for new elements is part of the broader field of investigations of nuclei at the limits of stability. In two series of experiments at SHIP, six new elements ( Z = 107-112) were synthesized via fusion reactions by 1n-deexcitation channels using lead or bismuth targets. The isotopes were unambiguously identified by means of αα correlations. Alpha decay, and not fission, is the dominant decay mode due to strong shell effects. Cross sections drop by two orders of magnitude from nielsbohrium ( Z = 107) to element 112, for which a cross section of 1 pb was measured. The development of intensive beam currents and sensitive detection methods is a necessity, aiming at production and identification of still heavier elements and new isotopes of already known elements, as well as small α-, β- and fission-branching ratios. An equally sensitive set-up is needed for measurement of excitation functions at low cross sections. Our results give hope that isotopes of element 114 close to the island of spherical superheavy elements could be produced by fusion reactions using 208Pb or 209Bi targets. Systematic studies of the reaction cross sections indicate that transfer of nucleons is the important process to initiate the fusion process.

  6. Techniques for the discovery of new elements

    Hofmann, S. [Gesellschaft fuer Schwerionenforschung mbH, Darmstadt (Germany)

    1997-04-01

    Search for new elements is part of the broader field of investigations of nuclei at the limits of stability. In two series of experiments at SHIP, six new elements (Z=107-112) were synthesized via fusion reactions by 1n-deexcitation channels using lead or bismuth targets. The isotopes were unambiguously identified by means of {alpha}{alpha} correlations. Alpha decay, and not fission, is the dominant decay mode due to strong shell effects. Cross sections drop by two orders of magnitude from nielsbohrium (Z=107) to element 112, for which a cross section of 1 pb was measured. The development of intensive beam currents and sensitive detection methods is a necessity, aiming at production and identification of still heavier elements and new isotopes of already known elements, as well as small {alpha}-, {beta}- and fission-branching ratios. An equally sensitive set-up is needed for measurement of excitation functions at low cross sections. Our results give hope that isotopes of element 114 close to the island of spherical superheavy elements could be produced by fusion reactions using {sup 208}Pb or {sup 209}Bi targets. Systematic studies of the reaction cross sections indicate that transfer of nucleons is the important process to initiate the fusion process. (orig.). 37 refs.

  7. Multivariate Time Series Similarity Searching

    Jimin Wang; Yuelong Zhu; Shijin Li; Dingsheng Wan; Pengcheng Zhang

    2014-01-01

    Multivariate time series (MTS) datasets are very common in various financial, multimedia, and hydrological fields. In this paper, a dimension-combination method is proposed to search similar sequences for MTS. Firstly, the similarity of single-dimension series is calculated; then the overall similarity of the MTS is obtained by synthesizing each of the single-dimension similarity based on weighted BORDA voting method. The dimension-combination method could use the existing similarity searchin...

  8. Correlation filtering in financial time series

    Aste, T; Tumminello, M; Mantegna, R N

    2005-01-01

    We apply a method to filter relevant information from the correlation coefficient matrix by extracting a network of relevant interactions. This method succeeds to generate networks with the same hierarchical structure of the Minimum Spanning Tree but containing a larger amount of links resulting in a richer network topology allowing loops and cliques. In Tumminello et al. \\cite{TumminielloPNAS05}, we have shown that this method, applied to a financial portfolio of 100 stocks in the USA equity markets, is pretty efficient in filtering relevant information about the clustering of the system and its hierarchical structure both on the whole system and within each cluster. In particular, we have found that triangular loops and 4 element cliques have important and significant relations with the market structure and properties. Here we apply this filtering procedure to the analysis of correlation in two different kind of interest rate time series (16 Eurodollars and 34 US interest rates).

  9. Stochastic modelling of regional archaeomagnetic series

    Hellio, G; Bouligand, C; Jault, D

    2015-01-01

    SUMMARY We report a new method to infer continuous time series of the declination, inclination and intensity of the magnetic field from archeomagnetic data. Adopting a Bayesian perspective, we need to specify a priori knowledge about the time evolution of the magnetic field. It consists in a time correlation function that we choose to be compatible with present knowledge about the geomagnetic time spectra. The results are presented as distributions of possible values for the declination, inclination or intensity. We find that the methodology can be adapted to account for the age uncertainties of archeological artefacts and we use Markov Chain Monte Carlo to explore the possible dates of observations. We apply the method to intensity datasets from Mari, Syria and to intensity and directional datasets from Paris, France. Our reconstructions display more rapid variations than previous studies and we find that the possible values of geomagnetic field elements are not necessarily normally distributed. Another outp...

  10. Calculations of power series development for solving problems of dynamics heat transfer

    For a given turbulent pipe flow, the transient heat occurs by convection as well as by thermal diffusity. In order to describe this process, a system of differnetial equations is given. The solution of this system will be possible with power series development at unknown coefficients. Therefore the calculation with power series will be shortly described and completed at several points and the development of determinants with power series as elements will be pointed out. (auth.)

  11. Asymptotic behavior of two-terminal series-parallel networks

    Golinelli, O.

    1997-01-01

    This paper discusses the enumeration of two-terminal series-parallel networks, i.e. the number of electrical networks built with n identical elements connected in series or parallel with two-terminal nodes. They frequently occur in applied probability theory as a model for real networks. The number of networks grows asymptotically like R^n/n^alpha, as for some models of statistical physics like self-avoiding walks, lattice animals, meanders, etc. By using a exact recurrence relation, the entr...

  12. The synthetic elements

    Hoffman, D.C.

    1990-05-01

    Prior to 1940, the heaviest element known was uranium, discovered in 1789. Since that time the elements 93 through 109 have been synthesized and identified and the elements 43, 61, 85, and 87 which were missing form the periodic tables of the 1930's have been discovered. The techniques and problems involved in these discoveries and the placement of the transuranium elements in the periodic table will be discussed. The production and positive identification of elements heavier than Md (Z=101), which have very short half-lives and can only be produced an atom-at-a-time, are very difficult and there have been controversies concerning their discovery. Some of the new methods which have been developed and used in these studies will be described. The prospects for production of still heavier elements will be considered.

  13. Properties of elements

    An element, in its chemical definition, is a common entity to the different variants of a simple substance and to the combinations of this substance with others. The place of an element in the periodic system is indicated by its atomic number (number of protons of the nucleus). The isotopes of a same element differ by the number of neutrons. Ninety-three elements exist naturally and 20 others have been produced artificially. This article presents the main properties of the elements summarized in tables: general properties (atomic number, name, symbol, atomic mass, electronic structure, first ionization energy, electronic affinity, oxidation number, density, fusion and boiling temperatures), the atomic and metallic radii, the electronegativity, the atomic mass and period of the main radionuclides, the historical discovery of the elements and their relative abundance on the Earth. (J.S.)

  14. The synthetic elements

    Prior to 1940, the heaviest element known was uranium, discovered in 1789. Since that time the elements 93 through 109 have been synthesized and identified and the elements 43, 61, 85, and 87 which were missing form the periodic tables of the 1930's have been discovered. The techniques and problems involved in these discoveries and the placement of the transuranium elements in the periodic table will be discussed. The production and positive identification of elements heavier than Md (Z=101), which have very short half-lives and can only be produced an atom-at-a-time, are very difficult and there have been controversies concerning their discovery. Some of the new methods which have been developed and used in these studies will be described. The prospects for production of still heavier elements will be considered

  15. The solar element

    Kragh, Helge

    2009-01-01

    of the nineteenth century. In the modest form of a yellow spectral line known as D3, 'helium' was sometimes supposed to exist in the Sun's atmosphere, an idea which is traditionally ascribed to J. Norman Lockyer. Did Lockyer discover helium as a solar element? How was the suggestion received by chemists, physicists...... and astronomers in the period until the spring of 1895, when William Ramsay serendipitously found the gas in uranium minerals? The hypothetical element helium was fairly well known, yet Ramsay's discovery owed little or nothing to Lockyer's solar element. Indeed, for a brief while it was thought that the two...... elements might be different. The complex story of how helium became established as both a solar and terrestrial element involves precise observations as well as airy speculations. It is a story that is unique among the discovery histories of the chemical elements....

  16. Element Level Semantic Matching

    Giunchiglia, Fausto; Yatskevich, Mikalai

    2004-01-01

    We think of Match as an operator which takes two graph-like structures and produces a mapping between semantically related nodes. The matching process is essentially divided into two steps: element level and structure level. Element level matchers consider only labels of nodes, while structure level matchers start from this information to consider the full graph. In this paper we present various element level semantic matchers, and discuss their implementation within the S-Match system. The m...

  17. Elements in biological AMS

    AMS (Accelerator Mass Spectrometry) provides high detection sensitivity for isotopes whose half-lives are between 10 years and 100 million years. 14C is the most developed of such isotopes and is used in tracing natural and anthropogenic organic compounds in the Earth's biosphere. Thirty-three elements in the main periodic table and 17 lanthanides or actinides have long lived isotopes, providing potential tracers for research in elemental biochemistry. Overlap of biologically interesting heavy elements and possible AMS tracers is discussed

  18. Chemistry of superheavy elements

    Schaedel, M. [Japan Atomic Energy Agency, Tokai, Ibaraki (Japan). Advanced Science Research Center; GSI Helmholtz Center for Heavy Ion Research, Darmstadt (Germany)

    2012-07-01

    The chemistry of superheavy elements - or transactinides from their position in the Periodic Table - is summarized. After giving an overview over historical developments, nuclear aspects about synthesis of neutron-rich isotopes of these elements, produced in hot-fusion reactions, and their nuclear decay properties are briefly mentioned. Specific requirements to cope with the one-atom-at-a-time situation in automated chemical separations and recent developments in aqueous-phase and gas-phase chemistry are presented. Exciting, current developments, first applications, and future prospects of chemical separations behind physical recoil separators ('pre-separator') are discussed in detail. The status of our current knowledge about the chemistry of rutherfordium (Rf, element 104), dubnium (Db, element 105), seaborgium (Sg, element 106), bohrium (Bh, element 107), hassium (Hs, element 108), copernicium (Cn, element 112), and element 114 is discussed from an experimental point of view. Recent results are emphasized and compared with empirical extrapolations and with fully-relativistic theoretical calculations, especially also under the aspect of the architecture of the Periodic Table. (orig.)

  19. Chemistry of superheavy elements

    The chemistry of superheavy elements - or transactinides from their position in the Periodic Table - is summarized. After giving an overview over historical developments, nuclear aspects about synthesis of neutron-rich isotopes of these elements, produced in hot-fusion reactions, and their nuclear decay properties are briefly mentioned. Specific requirements to cope with the one-atom-at-a-time situation in automated chemical separations and recent developments in aqueous-phase and gas-phase chemistry are presented. Exciting, current developments, first applications, and future prospects of chemical separations behind physical recoil separators ('pre-separator') are discussed in detail. The status of our current knowledge about the chemistry of rutherfordium (Rf, element 104), dubnium (Db, element 105), seaborgium (Sg, element 106), bohrium (Bh, element 107), hassium (Hs, element 108), copernicium (Cn, element 112), and element 114 is discussed from an experimental point of view. Recent results are emphasized and compared with empirical extrapolations and with fully-relativistic theoretical calculations, especially also under the aspect of the architecture of the Periodic Table. (orig.)

  20. Series-Fed Microstrip Array Antenna with Circular Polarization

    Tuan-Yung Han

    2012-01-01

    This study proposes a novel 2 × 2 array antenna design with broadband and circularly-polarized (CP) operation. The proposed design uses a simple series-fed network to increase the CP bandwidth without requiring one-by-one adjustment of each array element or a complex feed network. Selecting the appropriate spacing between each array element allows the proposed array antenna to generate CP radiation with a low axial ratio. Experimental results based on a prototype show that this 2 × 2 microstr...

  1. Stochastic finite element method with simple random elements

    Starkloff, Hans-Jörg

    2008-01-01

    We propose a variant of the stochastic finite element method, where the random elements occuring in the problem formulation are approximated by simple random elements, i.e. random elements with only a finite number of possible values.

  2. Formation of heterogeneous magmatic series beneath North Santorini, South Aegean island arc

    Bailey, John C; Jensen, E.S.; Hansen, A.; Kann, A.D.J.; Kann, K.

    The geochemistry of basaltic to dacitic lavas and dykes in the volcanic centres of NorthSantorini (Greece) has been investigated using elemental and Sr-Nd-Pb isotopic data andthree main magmatic series with sub-parallel trace element patterns for basalts can bedistinguished. The basalts have Sr and...... subducted slab to the overlying mantle. The three main magmatic series followed independent paths of assimilation of upper crustal materials during fractional crystallization. Assimilation was more pronounced at the basaltic stage. The long-lived histories of the three main magmatic series imply repetitive...

  3. Spectroscopic studies of the transplutonium elements

    Carnall, W.T.; Conway, J.G.

    1983-01-01

    The challenging opportunity to develop insights into both atomic structure and the effects of bonding in compounds makes the study of actinide spectroscopy a particularly fruitful and exciting area of scientific endeavor. It is also the interpretation of f-element spectra that has stimulated the development of the most sophisticated theoretical modeling attempted for any elements in the periodic table. The unique nature of the spectra and the wealth of fine detail revealed make possible sensitive tests of both physical models and the results of Hartree-Fock type ab initio calculations. This paper focuses on the unique character of heavy actinide spectroscopy. It discusses how it differs from that of the lighter member of the series and what are the special properties that are manifested. Following the introduction, the paper covers the following: (1) the role of systematic studies and the relationships of heavy-actinide spectroscopy to ongoing spectroscopic investigations of the lighter members of the series; (2) atomic (free-ion) spectra which covers the present status of spectroscopic studies with transplutonium elements, and future needs and directions in atomic spectroscopy; (3) the spectra of actinide compounds which covers the present status and future directions of spectroscopic studies with compounds of the transplutonium elements; and other spectroscopies. 1 figure, 2 tables.

  4. Spectroscopic studies of the transplutonium elements

    The challenging opportunity to develop insights into both atomic structure and the effects of bonding in compounds makes the study of actinide spectroscopy a particularly fruitful and exciting area of scientific endeavor. It is also the interpretation of f-element spectra that has stimulated the development of the most sophisticated theoretical modeling attempted for any elements in the periodic table. The unique nature of the spectra and the wealth of fine detail revealed make possible sensitive tests of both physical models and the results of Hartree-Fock type ab initio calculations. This paper focuses on the unique character of heavy actinide spectroscopy. It discusses how it differs from that of the lighter member of the series and what are the special properties that are manifested. Following the introduction, the paper covers the following: (1) the role of systematic studies and the relationships of heavy-actinide spectroscopy to ongoing spectroscopic investigations of the lighter members of the series; (2) atomic (free-ion) spectra which covers the present status of spectroscopic studies with transplutonium elements, and future needs and directions in atomic spectroscopy; (3) the spectra of actinide compounds which covers the present status and future directions of spectroscopic studies with compounds of the transplutonium elements; and other spectroscopies. 1 figure, 2 tables

  5. SERI advanced wind turbine blades

    Tangler, J.; Smith, B.; Jager, D.

    1992-02-01

    The primary goal of the Solar Energy Research Institute's (SERI) advanced wind turbine blades is to convert the kinetic energy in the wind into mechanical energy in an inexpensive and efficient manner. To accomplish this goal, advanced wind turbine blades have been developed by SERI that utilize unique airfoil technology. Performance characteristics of the advanced blades were verified through atmospheric testing on fixed-pitch, stall-regulated horizontal-axis wind turbines (HAWTs). Of the various wind turbine configurations, the stall-regulated HAWT dominates the market because of its simplicity and low cost. Results of the atmospheric tests show that the SERI advanced blades produce 10 percent to 30 percent more energy than conventional blades.

  6. Separation and spectrophotometric determination of elements

    This book is a useful text intended as a reference for the laboratory that is either involved in spectrophotometric analysis or requires separations prior to analysis by any method. It attempts to cover a diverse series of topics in fewer than 700 pages. Part I of the book covers general topics such as separation schemes (solvent extraction, precipitation, volatility, ion exchange), principles and instrumentation used for spectrophotometry, and color reagents in only 119 pages. Entire books have been written on each of those subjects. The author must therefore resort to extensive referencing to cover each subject adequately. Part II, Methods for Separation and Determination of Individual Elements, discusses all elements - both nonmetals and metals and major procedures for the separation and spectrophotometric determination of each element are adequately covered

  7. BSCW Unstructured Mixed Element Grids

    National Aeronautics and Space Administration — Corase Grid: Quad Surface Faces= 9360 Tria Surface Faces= 128928 Nodes = 2869187 Total Elements = 9099201 Hex Elements = 0 Pent_5 Elements = 0 Pent_6 Elements =...

  8. Proceedings of transuranium elements

    The identification of the first synthetic elements was established by chemical evidence. Conclusive proof of the synthesis of the first artificial element, technetium, was published in 1937 by Perrier and Segre. An essential aspect of their achievement was the prediction of the chemical properties of element 43, which had been missing from the periodic table and which was expected to have properties similar to those of manganese and rhenium. The discovery of other artificial elements, astatine and francium, was facilitated in 1939-1940 by the prediction of their chemical properties. A little more than 50 years ago, in the spring of 1940, Edwin McMillan and Philip Abelson synthesized element 93, neptunium, and confirmed its uniqueness by chemical means. On August 30, 1940, Glenn Seaborg, Arthur Wahl, and the late Joseph Kennedy began their neutron irradiations of uranium nitrate hexahydrate. A few months later they synthesized element 94, later named plutonium, by observing the alpha particles emitted from uranium oxide targets that had been bombarded with deuterons. Shortly thereafter they proved that is was the second transuranium element by establishing its unique oxidation-reduction behavior. The symposium honored the scientists and engineers whose vision and dedication led to the discovery of the transuranium elements and to the understanding of the influence of 5f electrons on their electronic structure and bonding. This volume represents a record of papers presented at the symposium

  9. Main: -300ELEMENT [PLACE

    Full Text Available -300ELEMENT S000122 11-May-2006 (last modified) kehi Present upstream of the promoter from the B ... liadin, and low molecular weight glutenin genes of wheat ; See S000001 -300CORE; See S000002 -300MOTIF; -300 ... element; hordein; gliadin; glutenin; seed; wheat ... (Triticum aestivum) TGHAAARK ...

  10. The Elements of Empathy.

    Iannotti, Ronald J.

    When assessing the influence of empathy on prosocial motivation, analyzing empathy alone would lead to a misunderstanding. We must also assess other elements of the situation, such as the altruist's coping skills and situational constraints. In a similar manner empathy itself should be conceptualized as a process with many elements. One way to…

  11. Elements of life

    Samuel, J.

    2004-01-01

    A Biography of J.M.W. Turner's life told through the use of the elements. A five screen video installation. This is the Main Screen which was complimented by four video screens to represent each element.Shown at the Community Pharmacy Gallery May 2004.

  12. Eisenstein Series on Loop Groups

    Liu, Dongwen

    2011-01-01

    Based on Garland's work, in this paper we construct the Eisenstein series on the adelic loop groups over a number field, induced from either a cusp form or a quasi-character which is assumed to be unramified. We compute the constant terms, prove their absolute and uniform convergence under the affine analog of Godement's criterion. For the case of quasi-characters the resulting formula is an affine Gindikin-Karpelevich formula. Then we prove the convergence of Eisenstein series themselves in certain analogs of Siegel subsets.

  13. Monolithic freeform element

    Kiontke, Sven R.

    2015-09-01

    For 10 years there has been the asphere as one of the new products to be accepted by the market. All parts of the chain design, production and measurement needed to learn how to treat the asphere and what it is helpful for. The aspheric optical element now is established and accepted as an equal optical element between other as a fast growing part of all the optical elements. Now we are focusing onto the next new element with a lot of potential, the optical freeform surface. Manufacturing results will be shown for fully tolerance optic including manufacturing, setup and optics configurations including measurement setup. The element itself is a monolith consisting of several optical surfaces that have to be aligned properly to each other. The freeform surface is measured for surface form tolerance (irregularity, slope, Zernike, PV).

  14. Flow Element Models

    Heiselberg, Per; Nielsen, Peter V.

    Air distribution in ventilated rooms is a flow process that can be divided into different elements such as supply air jets, exhaust flows, thermal plumes, boundary layer flows, infiltration and gravity currents. These flow elements are isolated volumes where the air movement is controlled by a re...... restricted number of parameters, and the air movement is fairly independent of the general flow in the enclosure. In many practical situations, the most convenient· method is to design the air distribution system using flow element theory.......Air distribution in ventilated rooms is a flow process that can be divided into different elements such as supply air jets, exhaust flows, thermal plumes, boundary layer flows, infiltration and gravity currents. These flow elements are isolated volumes where the air movement is controlled by a...

  15. NUCLEAR REACTOR FUEL ELEMENT

    Wheelock, C.W.; Baumeister, E.B.

    1961-09-01

    A reactor fuel element utilizing fissionable fuel materials in plate form is described. This fuel element consists of bundles of fuel-bearing plates. The bundles are stacked inside of a tube which forms the shell of the fuel element. The plates each have longitudinal fins running parallel to the direction of coolant flow, and interspersed among and parallel to the fins are ribs which position the plates relative to each other and to the fuel element shell. The plate bundles are held together by thin bands or wires. The ex tended surface increases the heat transfer capabilities of a fuel element by a factor of 3 or more over those of a simple flat plate.

  16. 中国元素在国际运动品牌产品外观设计中的应用与思考--以网球系列产品为例%Application and Consideration of Chinese Element in International Sports Brand’s Product Appearance De-sign:For Example Tennis Series Products

    陕威; 孙娣

    2015-01-01

    The use of literature, case analysis and others research methods to study of the application that the Chi-nese elements in international sports brand’s product de-sign. Research shows that the international sports brand product design for the Chinese market often use of Chi-nese color create a consumption atmosphere,cause the e-motional resonance with consumers;use of Chinese graph-ic symbols to build brand image of the personality,to en-hance the efficiency of brand appeal, narrow the psycho-logical distance with consumers;clever use of Chinese characters enhance the implications of brand cultural,en-hance the cultural identity with consumers. The major is-sues about the international sports brand product design is that split the link between“inside”and“outside”on Chi-nese element and the use of representation,this brings me some enlightenment in our local sports brand. Through this research to provide a theoretical reference for our local sports brand to accurate develop and reasonable use of Chinese elements in product design.%运用文献资料和案例分析等研究方法,对国际运动品牌产品外观设计中中国元素的应用进行分析。研究表明国际运动品牌针对中国市场的产品外观设计,常常使用中国色彩营造消费氛围,引起消费者的情感共鸣;运用中国图形符号塑造品牌个性形象,提升品牌诉求效率,拉近同消费者的心理距离;巧用中国汉字提升品牌文化意蕴,增进消费者的文化认同。当前国际运动品牌产品外观设计中主要存在割裂中国元素“内”与“外”之间的联系及运用表象化问题,这带给我国本土运动品牌一些启示。以期为我国本土运动品牌在产品外观设计中准确的开发与合理的运用中国元素提供理论参考。

  17. Slotted headless screws -- Metric series

    International Organization for Standardization. Geneva

    1972-01-01

    Specifies the dimensions for diameters from 1 mm up to and including 10 mm; refers to ISO/R 888 for length, and to ISO/R 262 for thread series; for the different shapes and dimensions of screw ends no reference has been made.

  18. Peaceful Schools. By Request Series.

    Fager, Jennifer; Boss, Suzie

    This booklet is part of a series of reports on "hot topics" in education. It presents information intended to cut through the hype and hysteria that often surrounds the subject of school violence. The booklet offers an overview of current research on school violence prevention, outlines some practical ideas for use in the classroom, and takes a…

  19. Volterra Series Based Distortion Effect

    Agerkvist, Finn T.

    2010-01-01

    A large part of the characteristic sound of the electric guitar comes from nonlinearities in the signal path. Such nonlinearities may come from the input- or output-stage of the amplier, which is often equipped with vacuum tubes or a dedicated distortion pedal. In this paper the Volterra series...

  20. Lower GI Series (Barium Enema)

    ... plain coffee or tea, without cream or milk sports drinks in flavors such as lemon, lime, or orange strained fruit juice, such as apple or white grape—orange juice is not recommended water The person needs to take laxatives and enemas the night before a lower GI series. A laxative is ...

  1. Series BK contactless DC motors

    Buss, V.A.; Vevyurko, I.A.; Ivanov, G.V.; Kuzmin, V.N.; Mikhaylov, E.M.; Stoma, A.S.

    1985-05-01

    Implementation of principles described in a previous work has allowed development and introduction to series production of a motor series including 36 standard types and sizes. The series is designed to operate at a nominal voltage of 27 V and includes two main versions: the BK-1 for fans and BK-2 for pumps. The BK-2 motor differs from the BK-1 in that it has a thin sealed sleeve of high impedance nonmagnetic metal separating the rotor and stator cavities, allowing the rotor of the BK-2 to operate in the fluids or other media being pumped. Characteristics of the motors are presented. The BK-1316 has an operating life of about 50,000 hours at nominal speed of 6000 rpm. The experience of series production of the BK motors has shown the need for further improvement of the design and technology in order to decrease the number of metal cutting, winding and assembly operations required. The use of plastic structures is suggested to this end.

  2. Series expansions and sudden singularities

    Barrow, John D; Tsokaros, A

    2013-01-01

    We construct solutions of the Friedmann equations near a sudden singularity using generalized series expansions for the scale factor, the density, and the pressure of the fluid content. In this way, we are able to arrive at a solution with a sudden singularity containing two free constants, as required for a general solution of the cosmological equations.

  3. Scholars’ Comments On the Series

    2007-01-01

    The collection embodies the highest academic standard of China’s research on international politics. The publication of the collection is very timely and the series tells about how China can look upon the world appropriately and how the world can look upon China appropriately.—Fan Jingyi, Professor and Dean of the School of Journalism and Communication, Tsinghua University

  4. Teenage Pregnancy. Opposing Viewpoints Series.

    Thompson, Stephen P.

    Books in the Opposing Viewpoints series challenge readers to question their own opinions and assumptions. By reading carefully balanced views, readers confront new ideas on the topic of interest. Although some experts believe that the problem of teenage pregnancy has been overstated, other recent studies have led many people to believe that…

  5. Flora Malesiana, Series III: Bryophyta

    Wijk, van der R.

    1951-01-01

    Scope, organization, and purpose of Series III, Flora Malesiana (Musci and Hepaticae) are explained. Collaboration is asked on the following points: (a) To collect Mosses and Hepaticae in Malaysia and to add extensive and detailed data to the specimens (directions available on application to the Edi

  6. Cosmetology Series. Duty Task List.

    Oklahoma State Dept. of Vocational and Technical Education, Stillwater. Curriculum and Instructional Materials Center.

    This document contains the occupational duty/task lists for three occupations in the cosmetology series. Each occupation is divided into a number of duties. A separate page for each duty in the occupation lists the tasks in that duty along with its code number and columns to indicate whether that particular duty has been taught and to provide…

  7. Stochastic Time-Series Spectroscopy

    Scoville, John

    2015-01-01

    Spectroscopically measuring low levels of non-equilibrium phenomena (e.g. emission in the presence of a large thermal background) can be problematic due to an unfavorable signal-to-noise ratio. An approach is presented to use time-series spectroscopy to separate non-equilibrium quantities from slowly varying equilibria. A stochastic process associated with the non-equilibrium part of the spectrum is characterized in terms of its central moments or cumulants, which may vary over time. This parameterization encodes information about the non-equilibrium behavior of the system. Stochastic time-series spectroscopy (STSS) can be implemented at very little expense in many settings since a series of scans are typically recorded in order to generate a low-noise averaged spectrum. Higher moments or cumulants may be readily calculated from this series, enabling the observation of quantities that would be difficult or impossible to determine from an average spectrum or from prinicipal components analysis (PCA). This meth...

  8. Locations in television drama series

    Waade, Anne Marit

    reflect the growing academic and business interests, respectively, on places in a global media and consumption culture (Falkheimer & Jansson, 2006). Based on empirical location studies of three crime series, Wallander (Yellow Bird, 2008-2012), The Bridge (SVT1 & DR1, 2011-2013) and Dicte (Misofilm/TV2...

  9. Farming. Canada at Work Series.

    Love, Ann; Drake, Jane

    This book is part of the Canada At Work series that introduces children to the people, machines, work and environmental concerns involved in bringing to market the products from important Canadian natural resources. This volume features a year-round look at two kinds of agriculture in Canada. On the vegetable farm, children find out about spring…

  10. Teen Addiction. Current Controversies Series.

    Winters, Paul A., Ed.

    The Current Controversies series explores social, political, and economic controversies that dominate the national and international scenes today from a variety of perspectives. Recent surveys have shown that, after years of decline, drug use among teenagers has increased during the 1990s, and that alcohol and tobacco use have remained…

  11. The heaviest elements

    How long does an atom need to ''exist before it's possible to do any meaningful chemistry on it? Is it possible to learn anything at all about the reactions of an element for which no more than a few dozen atoms have ever existed simultaneously? These are some of the questions colleagues in a few laboratories worldwide attempt to answer as they investigate the chemistry of the heaviest elements--elements produced one atom at a time in accelerators by bombarding radioactive targets with high-intensity beams of heavy ions. All of these elements spontaneously decay; the most stable of them have half-lives of only a few minutes, some that are less stable exist for only milliseconds. So far, no chemical studies have been performed on elements whose longest lived isotopes last only milliseconds because the difficulties of doing chemistry on this time scale under highly radioactive conditions are enormous. Over the past 10 years, however, nuclear chemists have developed new techniques or adapted existing ones to begin to probe the chemical properties of those very heavy elements that have half-lives in the range of seconds to minutes. Although the classic experiments are now nearly 40 years old, they are worth describing, as they were the first of their kind and illustrate many of the techniques that are still used and essential in studying these very short-lived, radioactive elements

  12. Series Expansion Method for Asymmetrical Percolation Models with Two Connection Probabilities

    Inui, Norio; Komatsu, Genichi; Kameoka, Koichi

    2000-01-01

    In order to study the solvability of the percolation model based on Guttmann and Enting's conjecture, the power series for the percolation probability in the form of ∑nHn(q)pn is examined. Although the power series is given by calculating inverse of the transfer-matrix in principle, it is very hard to obtain the inverse matrix containing many complex polynomials as elements. We introduce a new series expansion technique which does not necessitate inverse operation for the transfer-matrix.By using the new procedure, we derive the series of the asymmetrical percolation probability including the isotropic percolation probability as a special case.

  13. System Elements Heterogeneity

    Stanislav A. Kuja

    2013-01-01

    Full Text Available The paper deals with the features of the systematic approach development, shows that the systematic approach lacks the definition of system elements divisibility. This fact simplifies the system description. The article shows that, depending on the selection of the criterion of divisibility, different types of elements with different properties are got. Depending on the selection of the criterion of divisibility, the system structure becomes multidimensional. The paper recommends to indicate the criterion of the system divisibility during the systems research. It increases the certainty of the description of a complex system and characterizes the system elements.

  14. Learning time series evolution by unsupervised extraction of correlations

    Deco, Gustavo; Schürmann, Bernd

    1995-03-01

    We focus on the problem of modeling time series by learning statistical correlations between the past and present elements of the series in an unsupervised fashion. This kind of correlation is, in general, nonlinear, especially in the chaotic domain. Therefore the learning algorithm should be able to extract statistical correlations, i.e., higher-order correlations between the elements of the time signal. This problem can be viewed as a special case of factorial learning. Factorial learning may be formulated as an unsupervised redundancy reduction between the output components of a transformation that conserves the transmitted information. An information-theoretic-based architecture and learning paradigm are introduced. The neural architecture has only one layer and a triangular structure in order to transform elements by observing only the past and to conserve the volume. In this fashion, a transformation that guarantees transmission of information without loss is formulated. The learning rule decorrelates the output components of the network. Two methods are used: higher-order decorrelation by explicit evaluation of higher-order cumulants of the output distributions, and minimization of the sum of entropies of each output component in order to minimize the mutual information between them, assuming that the entropies have an upper bound given by Gibbs second theorem. After decorrelation between the output components, the correlation between the elements of the time series can be extracted by analyzing the trained neural architecture. As a consequence, we are able to model chaotic and nonchaotic time series. Furthermore, one critical point in modeling time series is the determination of the dimension of the embedding vector used, i.e., the number of components of the past that are needed to predict the future. With this method we can detect the embedding dimension by extracting the influence of the past on the future, i.e., the correlation of remote past and future

  15. Multi-Element Airfoil System

    Turner, Travis L. (Inventor); Khorrami, Mehdi R. (Inventor); Lockard, David P. (Inventor); McKenney, Martin J. (Inventor); Atherley, Raymond D. (Inventor); Kidd, Reggie T. (Inventor)

    2014-01-01

    A multi-element airfoil system includes an airfoil element having a leading edge region and a skin element coupled to the airfoil element. A slat deployment system is coupled to the slat and the skin element, and is capable of deploying and retracting the slat and the skin element. The skin element substantially fills the lateral gap formed between the slat and the airfoil element when the slat is deployed. The system further includes an uncoupling device and a sensor to remove the skin element from the gap based on a critical angle-of-attack of the airfoil element. The system can alternatively comprise a trailing edge flap, where a skin element substantially fills the lateral gap between the flap and the trailing edge region of the airfoil element. In each case, the skin element fills a gap between the airfoil element and the deployed flap or slat to reduce airframe noise.

  16. Solar cell element

    Nakano, Akihiko; Matsumoto, Hitoshi; Uda, Hiroshi; Komatsu, Yasumitsu; Ikegami, Kiyoharu.

    1989-05-18

    In the existing CdS/CdTe-based solar cell element, nothing is formed except the component effective for generating electromotive force and the components necessary for leading, collecting and extracting the generated electricity, hence even when the element shows deterioration of its performance during its usage, it has been difficult to analyze the above situation. In addition, it has also a defect that its characteristic such as the transfer efficiency in the neighborhood of its glass substrate in connection also with its manufacturing process. In order to solve the above problematical points, this invention proposes, with regard to a CdS-based solar cell element composed by forming a thin film on its substrate, to make a blank space on the above substrate and form thereon a thin film which composes the solar cell element concerned alone or in a piling up manner. 4 figs.

  17. Nuclear reactor fuel elements

    An improved nuclear power reactor fuel element is described which consists of fuel rods, rod guide tubes and an end plate. The system allows direct access to an end of each fuel rod for inspection purposes. (U.K.)

  18. Nuclear reactor fuel element

    The fuel element for a BWR known from the patent application DE 2824265 is developed so that the screw only breaks on the expansion shank with reduced diameter if the expansion forces are too great. (HP)

  19. The elemental composition of the Sun I. The intermediate mass elements Na to Ca

    Scott, Pat; Asplund, Martin; Sauval, A Jacques; Lind, Karin; Takeda, Yoichi; Collet, Remo; Trampedach, Regner; Hayek, Wolfgang

    2014-01-01

    The composition of the Sun is an essential piece of reference data for astronomy, cosmology, astroparticle, space and geo-physics. This article, dealing with the intermediate-mass elements Na to Ca, is the first in a series describing the comprehensive re-determination of the solar composition. In this series we severely scrutinise all ingredients of the analysis across all elements, to obtain the most accurate, homogeneous and reliable results possible. We employ a highly realistic 3D hydrodynamic solar photospheric model, which has successfully passed an arsenal of observational diagnostics. To quantify systematic errors, we repeat the analysis with three 1D hydrostatic model atmospheres (MARCS, MISS and Holweger & M\\"uller 1974) and a horizontally and temporally-averaged version of the 3D model ($\\langle$3D$\\rangle$). We account for departures from LTE wherever possible. We have scoured the literature for the best transition probabilities, partition functions, hyperfine and other data, and stringently ...

  20. Creating superheavy elements

    During the past 20 years physicists around the world have been engaged in the task of producing superheavy elements. At the Institute for Heavy-Ion Research in Darmstadt the authors have met with some success, synthesizing the nuclei of elements 107, 108 and 109. These nuclei lie beyond the 106-proton threshold that marked the limits of previous techniques for creating and identifying heavy elements. Experimental mass measurements, followed up by theory, show that the new elements owe their stability to the microscopic arrangement of their protons and neutrons rather than the macroscopic properties that stabilize lighter nuclei. On the other hand the authors have met with problems that have thus far prevented them from reaching the goals set in the late 1960's, when elements up to 114 seemed within reach. Working to overcome obstacles to further progress, however, has deepened our understanding of nuclear structure and of the dynamics of fusion reactions between nuclei. Nucleosynthesis has come a long way from the earliest years when elements not found in nature were created in nuclear reactors. Physicists have employed ever-heavier projectiles to bombard target atoms; the latest development is cold fusion, which masses and bombardment energies are carefully chosen to minimize the excitation of newly formed nuclei. In the course of their work early ideas about how to synthesize superheavy elements have almost all turned out to be wrong: the nuclei of the elements that can be synthesized are deformed and not, as postulated in 1966, spherical. In the fusion process they use stable, naturally plentiful spherical nuclei and medium-weight projectiles, not, as expected earlier, the heaviest radioactive man-made nuclei and correspondingly light projectiles. Fusion must take place at the lowest possible bombardment energy, and not, as believed earlier, with excess impact energy to assist the process by brute force

  1. New roof element system

    Ditlev, Jesper; Rudbeck, Claus Christian

    1997-01-01

    The aim of the project has been to develop an element system for warm deck roofs which, from a thermal and economical point of view, can deal with the future demands for heat loss coefficients for low slope roofs.......The aim of the project has been to develop an element system for warm deck roofs which, from a thermal and economical point of view, can deal with the future demands for heat loss coefficients for low slope roofs....

  2. Structural elements design manual

    Draycott, Trevor

    2012-01-01

    Gives clear explanations of the logical design sequence for structural elements. The Structural Engineer says: `The book explains, in simple terms, and with many examples, Code of Practice methods for sizing structural sections in timber, concrete,masonry and steel. It is the combination into one book of section sizing methods in each of these materials that makes this text so useful....Students will find this an essential support text to the Codes of Practice in their study of element sizing'.

  3. Distant elements of surprise

    The fortuitous alignment of a quasar and a distant galaxy has enabled astronomers to unravel the origin and evolution of chemical elements. Cosmologists and fossil hunters have more in common than it might first appear. Palaeontologists analyse fossil records of the last 3.5 billion years to track the evolution of life on Earth. Motivated by a similar curiosity, astronomers are searching for chemical elements in stars and cosmic gas to understand the origin of the chemistry of the universe, and how it has developed since the Big Bang. The basic theoretical framework of the universe's chemistry has been in place for half a century. The lightest elements - hydrogen and helium, along with trace amounts of deuterium and lithium - were created within a few minutes of the Big Bang. All of the other elements were assembled at much later times by the fusion of hydrogen and helium nuclei in the interior of stars. Some of these elements were dispersed through space in the violent supernova explosions with which some stars end their lives. They were then condensed into subsequent generations of stars, and into the planets that formed around them. Some of these elements were eventually incorporated into organic structures and became essential for life on Earth. This cosmic cycle continues to the present day. The closest region of active star formation is the Orion nebula, which is visible to anyone who looks up at the sky on a clear winter's night. But the details of the cycle are still far from clear. For example, we do not know when most of the elements were produced in the universe as a whole, or which stars were responsible for producing which elements. In order to unravel the path of chemical evolution we have to shift our attention to much further away than the Orion nebula. (U.K.)

  4. Atoms, molecules & elements

    Graybill, George

    2007-01-01

    Young scientists will be thrilled to explore the invisible world of atoms, molecules and elements. Our resource provides ready-to-use information and activities for remedial students using simplified language and vocabulary. Students will label each part of the atom, learn what compounds are, and explore the patterns in the periodic table of elements to find calcium (Ca), chlorine (Cl), and helium (He) through hands-on activities.

  5. Novel porcine repetitive elements

    Nonneman Dan J

    2006-12-01

    Full Text Available Abstract Background Repetitive elements comprise ~45% of mammalian genomes and are increasingly known to impact genomic function by contributing to the genomic architecture, by direct regulation of gene expression and by affecting genomic size, diversity and evolution. The ubiquity and increasingly understood importance of repetitive elements contribute to the need to identify and annotate them. We set out to identify previously uncharacterized repetitive DNA in the porcine genome. Once found, we characterized the prevalence of these repeats in other mammals. Results We discovered 27 repetitive elements in 220 BACs covering 1% of the porcine genome (Comparative Vertebrate Sequencing Initiative; CVSI. These repeats varied in length from 55 to 1059 nucleotides. To estimate copy numbers, we went to an independent source of data, the BAC-end sequences (Wellcome Trust Sanger Institute, covering approximately 15% of the porcine genome. Copy numbers in BAC-ends were less than one hundred for 6 repeat elements, between 100 and 1000 for 16 and between 1,000 and 10,000 for 5. Several of the repeat elements were found in the bovine genome and we have identified two with orthologous sites, indicating that these elements were present in their common ancestor. None of the repeat elements were found in primate, rodent or dog genomes. We were unable to identify any of the replication machinery common to active transposable elements in these newly identified repeats. Conclusion The presence of both orthologous and non-orthologous sites indicates that some sites existed prior to speciation and some were generated later. The identification of low to moderate copy number repetitive DNA that is specific to artiodactyls will be critical in the assembly of livestock genomes and studies of comparative genomics.

  6. The Middle Pivot Element Algorithm

    Anchala Kumari; Soubhik Chakraborty

    2012-01-01

    This paper is an improvement over the previous work on New Sorting Algorithm first proposed by Sundararajan and Chakraborty (2007). Here we have taken the pivot element as the middle element of the array. We call this improved version Middle Pivot Element Algorithm (MPA) and it is found that MPA is much faster than the two algorithms RPA (Random Pivot element Algorithm) and FPA (First Pivot element Algorithm) in which the pivot element was selected either randomly or as the first element, res...

  7. Solar energy - design element

    The main focus of this study is the theoretical examination of the possibilities of applying technological, functional, aesthetic and energy resources in elements of urban design. Designed solutions are treated as part of the overall optimization of architectural elements and urban space, in which technological development enables the use of certain energy potentials of elements of urban design. The paper presents student hypothetical design models of urban architectural elements with integrated photovoltaic modules. The analytical procedure was applied in the analysis of student work in a seminar of the first year of master studies at the Faculty of Architecture. The aim is to improve students' awareness of the need for proper handling of energy and the possibility of integration with other architectural elements. The research and the results have enabled further work on the sustainable development of architectural elements with a focus on the use of solar energy by promoting the modern design approach. Key words: PV module, teaching, solar energy, urban design

  8. Various considerations on hypergeometric series

    Euler, Leonhard

    2008-01-01

    E661 in the Enestrom index. This was originally published as "Variae considerationes circa series hypergeometricas" (1776). In this paper Euler is looking at the asymptotic behavior of infinite products that are similar to the Gamma function. He looks at the relations between some infinite products and integrals. He takes the logarithm of these infinite products, and expands these using the Euler-Maclaurin summation formula. In section 14, Euler seems to be rederiving some of the results he already proved in the paper. However I do not see how these derivations are different. If any readers think they understand please I would appreciate it if you could email me. I am presently examining Euler's work on analytic number theory. The two main topics I want to understand are the analytic continuation of analytic functions and the connection to divergent series, and the asymptotic behavior of the Gamma function.

  9. Random time series in astronomy.

    Vaughan, Simon

    2013-02-13

    Progress in astronomy comes from interpreting the signals encoded in the light received from distant objects: the distribution of light over the sky (images), over photon wavelength (spectrum), over polarization angle and over time (usually called light curves by astronomers). In the time domain, we see transient events such as supernovae, gamma-ray bursts and other powerful explosions; we see periodic phenomena such as the orbits of planets around nearby stars, radio pulsars and pulsations of stars in nearby galaxies; and we see persistent aperiodic variations ('noise') from powerful systems such as accreting black holes. I review just a few of the recent and future challenges in the burgeoning area of time domain astrophysics, with particular attention to persistently variable sources, the recovery of reliable noise power spectra from sparsely sampled time series, higher order properties of accreting black holes, and time delays and correlations in multi-variate time series. PMID:23277606

  10. Numerical Sequence of Borane Series

    Enos Masheija Kiremire

    2014-01-01

    A table of hydroborane families has been created. The table links boranes of different families(homologous series) and members of the same family based on k number. The table is useful deducing straight away whether a borane( molecular formula) is closo, nido or arachno or something else. The table also indicates that boranes are formed according to natural periodic function (arithmetical progression). The empirical formula utilized is extremely versatile, simple and based on the principle of...

  11. Winding numbers and Fourier series

    Kahane, Jean-Pierre

    2010-01-01

    This is an expository talk on a topic of classical analysis, arising from the VMO theory of the topological degree due to Br\\'ezis and Nirenberg (1995). We sketch the history of the subject and some of its recent developments. The paper is organized as a sequence of questions. Most of them, in particular the last one, deal with Fourier series of continuous functions of constant absolute value. One of them contains new results on the comparison of summation processes.

  12. Application of a nonlinear spring element to analysis of circumferentially cracked pipe under dynamic loading

    As part of the US NRC's Degraded Piping Program, the concept of using a nonlinear spring element to simulate the response of cracked pipe in dynamic finite element pipe evaluations was initially proposed. The nonlinear spring element is used to represent the moment versus rotation response of the cracked pipe section. The moment-rotation relationship for the crack size and material of interest is determined from either J-estimation scheme analyses or experimental data. In this paper, a number of possible approaches for modeling the nonlinear stiffness of the cracked pipe section are introduced. One approach, modeling the cracked section moment rotation response with a series of spring-slider elements, is discussed in detail. As part of this discussion, results from a series of finite element predictions using the spring-slider nonlinear spring element are compared with the results from a series of dynamic cracked pipe system experiments from the International Piping Integrity Research Group (IPIRG) program

  13. Semiclassical Series at Finite Temperature

    Aragão de Carvalho, C; Fraga, E S; Jorás, S E

    1999-01-01

    We derive the semiclassical series for the partition function of a one-dimensional quantum-mechanical system consisting of a particle in a single-well potential. We do this by applying the method of steepest descent to the path-integral representation of the partition function, and we present a systematic procedure to generate the terms of the series using the minima of the Euclidean action as the only input. For the particular case of a quartic anharmonic oscillator, we compute the first two terms of the series, and investigate their high and low temperature limits. We also exhibit the nonperturbative character of the terms, as each corresponds to sums over infinite subsets of perturbative graphs. We illustrate the power of such resummations by extracting from the first term an accurate nonperturbative estimate of the ground-state energy of the system and a curve for the specific heat. We conclude by pointing out possible extensions of our results which include field theories with spherically symmetric class...

  14. Aerial Image Series Quality Assessment

    With the growing demand for geospatial data, the aerial imagery with high spatial, spectral, and temporal resolution achieves great development. It is imperative to evaluate whether the acquired images are qualified enough, since the further image mosaic asks for strict time consistency and a re-flight involves considerable resources. In this paper, we address the problem of quick aerial image series quality assessment. An image series quality analysis system is proposed, which includes single image quality assessment, image series quality assessment based on the image matching, and offering a visual matching result in real time for human validation when the computer achieves dubious results. For two images, the affine matrix is different for different parts of images, especially for images of wide field. Therefore we calculate transfer matrixes by using even-distributed control points from different image parts with the RANSAC technology, and use the image rotation angle for image mosaic for human validation. Extensive experiments conducted on aerial images show that the proposed method can obtain similar results with experts

  15. Resumming the string perturbation series

    Grassi, Alba; Mariño, Marcos; Zakany, Szabolcs

    2015-05-01

    We use the AdS/CFT correspondence to study the resummation of a perturbative genus expansion appearing in the type II superstring dual of ABJM theory. Although the series is Borel summable, its Borel resummation does not agree with the exact non-perturbative answer due to the presence of complex instantons. The same type of behavior appears in the WKB quantization of the quartic oscillator in Quantum Mechanics, which we analyze in detail as a toy model for the string perturbation series. We conclude that, in these examples, Borel summability is not enough for extracting non-perturbative information, due to non-perturbative effects associated to complex instantons. We also analyze the resummation of the genus expansion for topological string theory on local , which is closely related to ABJM theory. In this case, the non-perturbative answer involves membrane instantons computed by the refined topological string, which are crucial to produce a well-defined result. We give evidence that the Borel resummation of the perturbative series requires such a non-perturbative sector.

  16. Travel Series as TV Entertainment: Genre characteristics and touristic views on foreign countries

    Anne Marit Waade

    2009-04-01

    Full Text Available Why is it not the deprived developing country, but rather the tempting destination the host arrives in when guiding the audience in a travel series? And how can we explore the specific combination of entertainment and education that travel series represent? Basically the travel series genre is a hybrid of journalistic documentary, entertaining lifestyle series and TV ads and the different series put different emphasis on the different genre elements. Travel series represent a certain kind of mediated consumption and they reflect lifestyle identity in relation to touristic consumer cultures. Like other lifestyle series dealing with consumption products and lifestyle markers encompassing fashion, food, garden, design and interior that balance somewhere between journalism and advertising, travel series typically deal with destinations, travel modes, cultural experiences and food as commodities. To understand the cultural and democratic value of travel series as a popular TV genre in the context of public service broadcasting, it is not the fact that the series contain educative and enlightening information about foreign cultures told in an entertaining and popular way that are of my interest. Rather it is tourism and media consumer culture as such, one has to expound as valuable democratic and cultural practice. The article presents different matrices of the respectively cultural and consumer knowledge that the different types of travel series include.

  17. Nonlinear time series analysis methods and applications

    Diks, Cees

    1999-01-01

    Methods of nonlinear time series analysis are discussed from a dynamical systems perspective on the one hand, and from a statistical perspective on the other. After giving an informal overview of the theory of dynamical systems relevant to the analysis of deterministic time series, time series generated by nonlinear stochastic systems and spatio-temporal dynamical systems are considered. Several statistical methods for the analysis of nonlinear time series are presented and illustrated with applications to physical and physiological time series.

  18. ACCURATE TIME SERIES CLASSIFICATION USING SHAPELETS

    M. Arathi; A. GOVARDHAN

    2014-01-01

    Time series data are sequences of values measured o ver time. One of the most recent approaches to classification of time series data is to find shape lets within a data set. Time series shapelets are time series subsequences which represent a class. In order to compare two time series sequences, existing work use s Euclidean distance measure. The problem with Euclid ean distance is that it requires data to be standardized if scales ...

  19. Maria Goeppert Mayer's Theoretical Work on Rare-Earth and Transuranic Elements

    Wang, Frank Y.

    2008-01-01

    After the discovery of element 93 neptunium by Edwin McMillan and Philip H. Abelson in 1941, Maria Goeppert Mayer applied the Thomas-Fermi model to calculate the electronic configuration of heavy elements and predicted the occurrence of a second rare-earth series in the vicinity of elements 91 or 92 extending to the transuranic elements. Mayer was motivated by Enrico Fermi, who was at the time contemplating military uses of nuclear energy. Historical development of nuclear science research le...

  20. Probabilistic boundary element method

    Cruse, T. A.; Raveendra, S. T.

    1989-01-01

    The purpose of the Probabilistic Structural Analysis Method (PSAM) project is to develop structural analysis capabilities for the design analysis of advanced space propulsion system hardware. The boundary element method (BEM) is used as the basis of the Probabilistic Advanced Analysis Methods (PADAM) which is discussed. The probabilistic BEM code (PBEM) is used to obtain the structural response and sensitivity results to a set of random variables. As such, PBEM performs analogous to other structural analysis codes such as finite elements in the PSAM system. For linear problems, unlike the finite element method (FEM), the BEM governing equations are written at the boundary of the body only, thus, the method eliminates the need to model the volume of the body. However, for general body force problems, a direct condensation of the governing equations to the boundary of the body is not possible and therefore volume modeling is generally required.

  1. Computing Heavy Elements

    Schunck, N; Kortelainen, M; McDonnell, J; Moré, J; Nazarewicz, W; Pei, J; Sarich, J; Sheikh, J; Staszczak, A; Stoitsov, M; Wild, S M

    2011-01-01

    Reliable calculations of the structure of heavy elements are crucial to address fundamental science questions such as the origin of the elements in the universe. Applications relevant for energy production, medicine, or national security also rely on theoretical predictions of basic properties of atomic nuclei. Heavy elements are best described within the nuclear density functional theory (DFT) and its various extensions. While relatively mature, DFT has never been implemented in its full power, as it relies on a very large number (~ 10^9-10^12) of expensive calculations (~ day). The advent of leadership-class computers, as well as dedicated large-scale collaborative efforts such as the SciDAC 2 UNEDF project, have dramatically changed the field. This article gives an overview of the various computational challenges related to the nuclear DFT, as well as some of the recent achievements.

  2. Fuel Element Technical Manual

    Burley, H.H. [ed.

    1956-08-01

    It is the purpose of the Fuel Element Technical Manual to Provide a single document describing the fabrication processes used in the manufacture of the fuel element as well as the technical bases for these processes. The manual will be instrumental in the indoctrination of personnel new to the field and will provide a single data reference for all personnel involved in the design or manufacture of the fuel element. The material contained in this manual was assembled by members of the Engineering Department and the Manufacturing Department at the Hanford Atomic Products Operation between the dates October, 1955 and June, 1956. Arrangement of the manual. The manual is divided into six parts: Part I--introduction; Part II--technical bases; Part III--process; Part IV--plant and equipment; Part V--process control and improvement; and VI--safety.

  3. Advanced finite element technologies

    Wriggers, Peter

    2016-01-01

    The book presents an overview of the state of research of advanced finite element technologies. Besides the mathematical analysis, the finite element development and their engineering applications are shown to the reader. The authors give a survey of the methods and technologies concerning efficiency, robustness and performance aspects. The book covers the topics of mathematical foundations for variational approaches and the mathematical understanding of the analytical requirements of modern finite element methods. Special attention is paid to finite deformations, adaptive strategies, incompressible, isotropic or anisotropic material behavior and the mathematical and numerical treatment of the well-known locking phenomenon. Beyond that new results for the introduced approaches are presented especially for challenging nonlinear problems.

  4. Trend prediction of chaotic time series

    Li Aiguo; Zhao Cai; Li Zhanhuai

    2007-01-01

    To predict the trend of chaotic time series in time series analysis and time series data mining fields, a novel predicting algorithm of chaotic time series trend is presented, and an on-line segmenting algorithm is proposed to convert a time series into a binary string according to ascending or descending trend of each subsequence. The on-line segmenting algorithm is independent of the prior knowledge about time series. The naive Bayesian algorithm is then employed to predict the trend of chaotic time series according to the binary string. The experimental results of three chaotic time series demonstrate that the proposed method predicts the ascending or descending trend of chaotic time series with few error.

  5. Osteoporosis and trace elements

    Aaseth, J.; Boivin, G.; Andersen, Ole

    2012-01-01

    functional, exercise related and nutritional factors. Of particular considerations are calcium (Ca) status, vitamin D, fluoride, magnesium and other trace elements. Several trace elements such as zinc and copper are essential for normal development of the skeleton in humans and animals. Fluoride accumulates....... Numerous investigators have evaluated the role of medications and supplementations with minerals and trace substances to reverse the progression of this disease. Although bisphosphonates are still the drugs of choice, low-dosed fluoride and strontium salts have shown promise for the future....

  6. Bibliography on transuranium elements

    A selective bibliography of prominent publications on transuranium elements is compiled. Heading papers, symposia proceedings and the textbooks are included in the bibliography. The bibliography is arranged under the headings: (1)Books, Symposia Proceedings, Reviews etc., (2)Discovery, (3)Weighable Isolation, (4)Metal Preparation, (5)Nuclear Properties, (6)Plutonium as Reactor Fuel, (7)Fuel Reprocessing, (8)Solid State Chemistry, Thermochemistry and Spectroscopy, (9)Radiation Safety, (10)Applications, and (11)Some Typical Indian Papers. Total number of references cited are 298. The bibliography, though selective, will serve as a starting point for comprehensive literature search on transuranium elements. (author)

  7. Finite element analysis

    2010-01-01

    Finite element analysis is an engineering method for the numerical analysis of complex structures. This book provides a bird's eye view on this very broad matter through 27 original and innovative research studies exhibiting various investigation directions. Through its chapters the reader will have access to works related to Biomedical Engineering, Materials Engineering, Process Analysis and Civil Engineering. The text is addressed not only to researchers, but also to professional engineers, engineering lecturers and students seeking to gain a better understanding of where Finite Element Analysis stands today.

  8. Finite elements and approximation

    Zienkiewicz, O C

    2006-01-01

    A powerful tool for the approximate solution of differential equations, the finite element is extensively used in industry and research. This book offers students of engineering and physics a comprehensive view of the principles involved, with numerous illustrative examples and exercises.Starting with continuum boundary value problems and the need for numerical discretization, the text examines finite difference methods, weighted residual methods in the context of continuous trial functions, and piecewise defined trial functions and the finite element method. Additional topics include higher o

  9. Elements of linear space

    Amir-Moez, A R; Sneddon, I N

    1962-01-01

    Elements of Linear Space is a detailed treatment of the elements of linear spaces, including real spaces with no more than three dimensions and complex n-dimensional spaces. The geometry of conic sections and quadric surfaces is considered, along with algebraic structures, especially vector spaces and transformations. Problems drawn from various branches of geometry are given.Comprised of 12 chapters, this volume begins with an introduction to real Euclidean space, followed by a discussion on linear transformations and matrices. The addition and multiplication of transformations and matrices a

  10. Rocket propulsion elements

    Sutton, George P

    2011-01-01

    The definitive text on rocket propulsion-now revised to reflect advancements in the field For sixty years, Sutton's Rocket Propulsion Elements has been regarded as the single most authoritative sourcebook on rocket propulsion technology. As with the previous edition, coauthored with Oscar Biblarz, the Eighth Edition of Rocket Propulsion Elements offers a thorough introduction to basic principles of rocket propulsion for guided missiles, space flight, or satellite flight. It describes the physical mechanisms and designs for various types of rockets' and provides an unders