WorldWideScience

Sample records for appendix a4 far-field

  1. Far field acceleration

    Energy Technology Data Exchange (ETDEWEB)

    Fernow, R.C.

    1995-07-01

    Far fields are propagating electromagnetic waves far from their source, boundary surfaces, and free charges. The general principles governing the acceleration of charged particles by far fields are reviewed. A survey of proposed field configurations is given. The two most important schemes, Inverse Cerenkov acceleration and Inverse free electron laser acceleration, are discussed in detail.

  2. 44 CFR Appendix A(4) to Part 61 - Appendix A(4) to Part 61

    Science.gov (United States)

    2010-10-01

    ... notice sent to you in conjunction with the community inspection procedure established under 44 CFR 59.30... procedure set forth in National Flood Insurance Program Regulations (44 CFR 59.30). During the several years... 44 Emergency Management and Assistance 1 2010-10-01 2010-10-01 false Appendix A(4) to Part 61...

  3. Notions of support for far fields

    Science.gov (United States)

    Sylvester, John

    2006-08-01

    In practical remote sensing, faraway sources radiate fields that, within measurement precision, are nearly those radiated by point sources. Algorithms like MUSIC (Devaney J. Acoust. Soc. Am. at press, Kirsch 2002 Inverse Problems 18 1025-40) correctly identify their number, their locations and their strengths based on observations of the near or far fields they radiate. Asymptotic perturbation formulae (Ammari et al 2005 SIAM J. Appl. Math. 65 2107-27, Brühl et al 2003 Numer. Math. 93 635-54) have been used to successfully locate small sparse inclusions based on remote measurements. The main motivation for this paper is to locate sources which are supported on sets that are larger and less sparse. Although the far field of a solution to the inhomogeneous Helmholtz equation does not determine the source, or its support, uniquely, we will show how to associate with any far field a unique union of well-separated-convex sets (UWSC sets) that is both big enough to support a source that can radiate that far field, and small enough that it must be contained in the UWSC-support of any source that radiates the same far field. This means that it makes theoretical sense to look for not only the number and the locations, but also the convex geometry of sources based on the far field they radiate. The only requirement is that sources be well separated—the diameter of each convex component is strictly smaller than the distance to the other components. We also give examples to illustrate the extent to which both the convexity and well-separated properties in UWSC are necessary, i.e. we will exhibit far fields with which it is not possible to associate a unique smallest compact set or, in {{\\bb R}}^{2} , a unique smallest disjoint union of convex sets.

  4. Far-field environment working group summary

    Energy Technology Data Exchange (ETDEWEB)

    Pearcy, E.C. [Center for Nuclear Waste Regulatory Analyses, San Antonio, TX (United States); Cady, R.E. [Nuclear Regulatory Commission, Washington, DC (United States)

    1995-09-01

    This article is a summary of the proceedings of a group discussion which took place at the Workshop on the Role of Natural Analogs in Geologic Disposal of High-Level Nuclear Waste in San Antonio, Texas on July 22-25, 1991. The working group concentrated on the subject of the potential impacts of underground disposal of high-level radioactive wastes on the far-field environment.

  5. A far field estimate for source integrals

    Science.gov (United States)

    Levine, H.

    A mathematical stratagem, based on a relation of asymptotic equivalence, is proposed for ascertaining far field source behavior. The relation associates a plane wave function at locations remote from a central reference point with a combination of converging and diverging spherical wave functions along the direction of its normal or propagating vector. An integral extended over all directions in space of a unit vector leads to an asymptotic characterization of a Fourier transform of the integrand function.

  6. Ultrashort Pulses for Far-Field Nanoscopy

    CERN Document Server

    Maurer, Patrick; Romero-Isart, Oriol

    2016-01-01

    The Abbe diffraction limit prevents focusing monochromatic light in the far-field beyond a spot size half its wavelength. For microscopy purposes at the nanoscale, namely nanoscopy, such limit can be circumvented by either using near-fields, which are not diffraction-limited, or, in fluorescence nanoscopy, by manipulating bright and dark states of the fluorescent markers. Here we propose and analyze an alternative approach for far-field nanoscopy based on using coherent polychromatic light, that is, ultrashort pulses. Such pulses have spectral bandwidths comparable, and even larger in the attosecond regime, than a carrier optical frequency. We show that a train of ultrashort pulses can be used to excite markers with nanoscale resolution. In particular, we show that they can be focused to a spot size given by the wavelength associated to its spectral bandwidth and that they can excite a two-level marker with an optical transition. The excitation mechanism is non-conventional for two-level systems, as it relies...

  7. Natural analogs for far-field environment/hydrology

    Energy Technology Data Exchange (ETDEWEB)

    Hoxie, D.T. [Geological Survey, Denver, CO (United States)

    1995-09-01

    This paper discusses the applicability of natural-analog studies to characterize far-field conditions in the vicinity of geologic repository systems for the disposal of high-level radioactive wastes. Conditions in the far field are determined by the natural state and evolution of the repository geosphere and its environment.

  8. Spectrally resolved far-fields of terahertz quantum cascade lasers

    CERN Document Server

    Brandstetter, Martin; Krall, Michael; Kainz, Martin A; Detz, Hermann; Zederbauer, Tobias; Andrews, Aaron M; Strasser, Gottfried; Unterrainer, Karl

    2016-01-01

    We demonstrate a convenient and fast method to measure the spectrally resolved far-fields of multimode terahertz quantum cascade lasers by combining a microbolometer focal plane array with an FTIR spectrometer. Far-fields of fundamental TM0 and higher lateral order TM1 modes of multimode Fabry-P\\'erot type lasers have been distinguished, which very well fit to the results obtained by a 3D finite-element simulation. Furthermore, multimode random laser cavities have been investigated, analyzing the contribution of each single laser mode to the total far-field. The presented method is thus an important tool to gain in-depth knowledge of the emission properties of multimode laser cavities at terahertz frequencies, which become increasingly important for future sensing applications.

  9. Adiabatic far-field sub-diffraction imaging

    Science.gov (United States)

    Cang, Hu; Salandrino, Alessandro; Wang, Yuan; Zhang, Xiang

    2015-08-01

    The limited resolution of a conventional optical imaging system stems from the fact that the fine feature information of an object is carried by evanescent waves, which exponentially decays in space and thus cannot reach the imaging plane. We introduce here an adiabatic lens, which utilizes a geometrically conformal surface to mediate the interference of slowly decompressed electromagnetic waves at far field to form images. The decompression is satisfying an adiabatic condition, and by bridging the gap between far field and near field, it allows far-field optical systems to project an image of the near-field features directly. Using these designs, we demonstrated the magnification can be up to 20 times and it is possible to achieve sub-50 nm imaging resolution in visible. Our approach provides a means to extend the domain of geometrical optics to a deep sub-wavelength scale.

  10. Topological magnetoelectric effects in microwave far-field radiation

    Science.gov (United States)

    Berezin, M.; Kamenetskii, E. O.; Shavit, R.

    2016-07-01

    Similar to electromagnetism, described by the Maxwell equations, the physics of magnetoelectric (ME) phenomena deals with the fundamental problem of the relationship between electric and magnetic fields. Despite a formal resemblance between the two notions, they concern effects of different natures. In general, ME-coupling effects manifest in numerous macroscopic phenomena in solids with space and time symmetry breakings. Recently, it was shown that the near fields in the proximity of a small ferrite particle with magnetic-dipolar-mode (MDM) oscillations have the space and time symmetry breakings and the topological properties of these fields are different from the topological properties of the free-space electromagnetic fields. Such MDM-originated fields—called magnetoelectric (ME) fields—carry both spin and orbital angular momenta. They are characterized by power-flow vortices and non-zero helicity. In this paper, we report on observation of the topological ME effects in far-field microwave radiation based on a small microwave antenna with a MDM ferrite resonator. We show that the microwave far-field radiation can be manifested with a torsion structure where an angle between the electric and magnetic field vectors varies. We discuss the question on observation of the regions of localized ME energy in far-field microwave radiation.

  11. Far-field super-resolution imaging of resonant multiples.

    Science.gov (United States)

    Guo, Bowen; Huang, Yunsong; Røstad, Anders; Schuster, Gerard

    2016-05-01

    We demonstrate for the first time that seismic resonant multiples, usually considered as noise, can be used for super-resolution imaging in the far-field region of sources and receivers. Tests with both synthetic data and field data show that resonant multiples can image reflector boundaries with resolutions more than twice the classical resolution limit. Resolution increases with the order of the resonant multiples. This procedure has important applications in earthquake and exploration seismology, radar, sonar, LIDAR (light detection and ranging), and ultrasound imaging, where the multiples can be used to make high-resolution images. PMID:27386521

  12. Far-field super-resolution imaging of resonant multiples

    KAUST Repository

    Guo, B.

    2016-05-20

    We demonstrate for the first time that seismic resonant multiples, usually considered as noise, can be used for super-resolution imaging in the far-field region of sources and receivers. Tests with both synthetic data and field data show that resonant multiples can image reflector boundaries with resolutions more than twice the classical resolution limit. Resolution increases with the order of the resonant multiples. This procedure has important applications in earthquake and exploration seismology, radar, sonar, LIDAR (light detection and ranging), and ultrasound imaging, where the multiples can be used to make high-resolution images.

  13. Coherence vortices of partially coherent beams in the far field

    Institute of Scientific and Technical Information of China (English)

    Liu Pu-Sheng; Lü Bai-da

    2007-01-01

    Based on the propagation law of cross-spectral density function, studied in this paper are the coherence vortices of partially coherent, quasi-monochromatic singular beams with Gaussian envelope and Schell-model correlator in the far field, where our main attention is paid to the evolution of far-field coherence vortices into intensity vortices of fully coherent beams. The results show that, although there are usually no zeros of intensity in partially coherent beams with Gaussian envelope and Schell-model correlator, zeros of spectral degree of coherence exist. The coherence vortices of spectral degree of coherence depend on the relative coherence length, mode index and positions of pairs of points.If a point and mode index are kept fixed, the position of coherence vortices changes with the increase of the relative coherence length. For the low coherent case there is a circular phase dislocation. In the coherent limit coherence vortices become intensity vortices of fully coherent Laguerre-Gaussian beams.

  14. Fundamental Bounds on Radio Localization Precision in the Far Field

    CERN Document Server

    Dil, B J; Hoenders, B J

    2015-01-01

    This paper experimentally and theoretically investigates the fundamental bounds on radio localization precision of far-field Received Signal Strength (RSS) measurements. RSS measurements are proportional to power-flow measurements time-averaged over periods long compared to the coherence time of the radiation. Our experiments are performed in a novel localization setup using 2.4GHz quasi-monochromatic radiation, which corresponds to a mean wavelength of 12.5cm. These experiments show for the first time that time-averaged far-field RSS measurements are not independent but cross-correlated over a spatial region. We experimentally and theoretically show that the minimum radius of the cross-correlated region approaches the diffraction limit, which equals half the mean wavelength of the radiation. Measuring RSS beyond a sampling density of one sample per half the mean wavelength is shown not to increase localization precision, as the Root-Mean-Squared-Error (RMSE) converges asymptotically to roughly half the mean ...

  15. Far-field measurements of short-wavelength surface plasmons

    Energy Technology Data Exchange (ETDEWEB)

    Blau, Yochai; Gjonaj, Bergin; David, Asaf; Dolev, Shimon; Shterman, Doron; Bartal, Guy, E-mail: guy@ee.technion.ac.il [Department of Electrical Engineering, Technion - Israel Institute of Technology, Haifa 32000 (Israel)

    2015-03-23

    We present direct far-field measurements of short-wavelength surface plasmon polaritons (SPP) by conventional optics means. Plasmonic wavelength as short as 231 nm was observed for 532 nm illumination on a Ag−Si{sub 3}N{sub 4} platform, demonstrating the capability to characterize SPPs well below the optical diffraction limit. This is done by scaling a sub-wavelength interferometric pattern to a far-field resolvable periodicity. These subwavelength patterns are obtained by coupling light into counter-propagating SPP waves to create a standing-wave pattern of half the SPP wavelength periodicity. Such patterns are mapped by a scattering slit, tilted at an angle so as to increase the periodicity of the intensity pattern along it to more than the free-space wavelength, making it resolvable by diffraction limited optics. The simplicity of the method as well as its large dynamic range of measurable wavelengths make it an optimal technique to characterize the properties of plasmonic devices and high-index dielectric waveguides, to improve their design accuracy and enhance their functionality.

  16. Far-field superresolution by imaging of resonance scattering

    KAUST Repository

    Schuster, Gerard T.

    2014-10-31

    We show that superresolution imaging in the far-field region of the sources and receivers is theoretically and practically possible if migration of resonant multiples is employed. A resonant multiple is one that bounces back and forth between two scattering points; it can also be the multiple between two smoothly varying interfaces as long as the reflection wave paths partially overlap and reflect from the same Fresnel zone. For a source with frequency f, compared to a one-way trip, N round trips in propagating between two scatterers increase the effective frequency by 2N × f and decrease the effective wavelength by λ/(2N). Thus, multiples can, in principle, be used as high-frequency probes to estimate detailed properties of layers. Tests with both synthetic and field data validate this claim. Improved resolution by multiple imaging is not only feasible for crustal reflections, but might be applicable to mantle and core reverberations recorded by earthquake seismologists.

  17. Far-Field Tsunami Hazard in New Zealand Ports

    Science.gov (United States)

    Borrero, Jose C.; Goring, Derek G.; Greer, S. Dougal; Power, William L.

    2015-03-01

    We present the results of a numerical modeling study investigating the effects of far-field tsunamis in New Zealand ports. Four sites (Marsden Point, Tauranga, Harbor, Port Taranaki and Lyttelton Harbor) were selected based on a combination of factors such as economic importance and the availability of historical and/or instrumental data. Numerical models were created using the ComMIT tsunami modeling tool and the Method Of Splitting Tsunami (MOST) hydrodynamic model. Comparison of model results to measured data from recent historical events showed that, for particular sites and events, the model correlated well with the timing and amplitude of the observed tsunami, and, in most cases, there was generally good agreement between the and modeled tsunami heights and current speeds. A sensitivity analysis for tsunami heights and current speeds was conducted using a suite of large ( M W 9) tsunamigenic earthquake sources situated at regular 15° intervals in azimuth along the Pacific Rim while another set of scenarios focused on regional tsunami sources in the Southwest Pacific. Model results were analyzed for tsunami heights and current speeds as a function of the source region. In terms of currents, the analysis identified where speeds were greatest and which source was responsible. Results suggested that tsunamis originating from Central America produced the strongest response in New Zealand. The modeling was also used to determine the timing and duration of potentially dangerous current speeds as well as minimum `safe depths' for vessel evacuation offshore. This study was motivated by the desire to reduce damage and operational losses via improved forecasting of far-field tsunamis at New Zealand ports. It is important that forecasts are accurate since tsunami damage to ships and facilities is expensive and can be mitigated given timely warnings and because preventable false alarms are also costly in terms of lost productivity. The modeling presented here will

  18. Far-field Diffraction Properties of Annular Walsh Filters

    Directory of Open Access Journals (Sweden)

    Pubali Mukherjee

    2013-01-01

    Full Text Available Annular Walsh filters are derived from the rotationally symmetric annular Walsh functions which form a complete set of orthogonal functions that take on values either +1 or −1 over the domain specified by the inner and outer radii of the annulus. The value of any annular Walsh function is taken as zero from the centre of the circular aperture to the inner radius of the annulus. The three values 0, +1, and −1 in an annular Walsh function can be realized in a corresponding annular Walsh filter by using transmission values of zero amplitude (i.e., an obscuration, unity amplitude and zero phase, and unity amplitude and phase, respectively. Not only the order of the Walsh filter but also the size of the inner radius of the annulus provides an additional degree of freedom in tailoring of point spread function by using these filters for pupil plane filtering in imaging systems. In this report, we present the far-field amplitude characteristics of some of these filters to underscore their potential for effective use in several demanding applications like high-resolution microscopy, optical data storage, microlithography, optical encryption, and optical micromanipulation.

  19. Parameter governing the far-field features of round jets

    Science.gov (United States)

    Xia, Xi; Mohseni, Kamran

    2016-10-01

    This study is inspired by the observation and hypothesis that the spreading and decay behaviors of a jet directly depend on the momentum-mixing mechanism between the jet and surrounding fluid. This mixing behavior is dictated by the kinematic viscosity ν for a laminar jet, which can be dramatically enhanced in a turbulent flow and is represented by the eddy viscosity ɛ . Similarly, pulsation in a synthetic jet is identified as another mechanism for enhancing mixing, which can be captured by an enhanced eddy viscosity beyond what is observed in a corresponding turbulent continuous jet. To this end, an effective-eddy-viscosity concept is proposed to model any excitation of a jet that could result in enhanced mixing beyond what is predicted by the kinematic viscosity. Our previous study found that ɛ is actuator dependent and its relationship with the spreading or decay behavior of a jet is not obvious. To remove the actuator dependence, this study performs a dimensional analysis to relate the spreading and decay behaviors to a scaled effective eddy viscosity ɛ /√{K } (K is the momentum flux). This quantity physically represents a competition between the radial diffusion and the axial convection of the jet axial momentum. The experimental results confirm that ɛ /√{K } governs the spreading and decay rates of the far field for any round jets.

  20. Near-field to far-field transition of photonic crystal fibers symmetries and interference phenomena

    CERN Document Server

    Mortensen, N A

    2002-01-01

    The transition from the near to the far field of the fundamental mode radiating out of a photonic crystal fiber is investigated experimentally and theoretically. It is observed that the hexagonal shape of the near field rotates two times by pi/6 when moving into the far field, and eventually six satellites form around a nearly gaussian far-field pattern. A semi-empirical model is proposed, based on describing the near field as a sum of seven gaussian distributions, which qualitatively explains all the observed phenomena and quantitatively predicts the relative intensity of the six satellites in the far field.

  1. Fractal characteristics of far-field diffraction patterns for two-dimensional Thue-Morse quasicrystals

    Institute of Scientific and Technical Information of China (English)

    YANG Ming-yang; ZHOU Jun; L Petti; S De Nicola; P Mormile

    2011-01-01

    We report a numerical method to analyze the fractal characteristics of far-field diffraction patterns for two-dimensional Thue-Morse(2-D TM) structures.The far-field diffraction patterns of the 2-D TM structures can be obtained by the numerical method,and they have a good agreement with the experimental ones.The analysis shows that the fractal characteristics of far-field diffraction patterns for the 2-D TM structures are determined by the inflation rule,which have potential applications in the design of optical diffraction devices.

  2. Influence of turbulent atmosphere on the far-field coherent combined beam quality

    Institute of Scientific and Technical Information of China (English)

    Pu Zhou; Zejin Liu; Xiaojun Xu; Xiaolin Wang; Xiao Li; Zilun Chen

    2008-01-01

    Propagation of coherent combined laser beams in turbulent atmosphere is numerically studied based on the extended Huygens-Fresnel principle. By choosing beam propagation factor (BPF) and beam quality factor (BQ) to characterize the far-field irradiance distribution properties, the influence of turbulence on far-field coherent combined beam quality is studied in detail. The investigation reveals that with the coherence length decreasing, the irradiance distribution pattern evolves from typical non-Gaussian shape with multiple side-lobes into Gaussian shape which is seen in the incoherent combining case. In weak turbulent atmosphere, the far-field beam quality suffers less when the 1aser array gets more compact and operates at a longer wavelength. In strong turbulent atmosphere, the far-field beam quality degrades into the incoherent combining case without any relationship with the fill factor and laser wavelength.

  3. Structural polarization properties of vector Gaussian beam in the far field

    Institute of Scientific and Technical Information of China (English)

    Zhou Guo-Quan; Ni Yong-Zhou; Chu Xiu-Xiang

    2007-01-01

    Based on the vector angular spectrum representation of optical beam and the method of stationary phase, the analytical TE and TM terms of vector Gaussian beam have been presented in the far field. By using the local polarization matrix, the polarization properties of the TE and TM terms in the far field are investigated, and it is found that the degree of their polarization is only determined by the spatial location. When the source is completely polarized, the TE and TM terms are both completely polarized in the far field. When the source is completely unpolarized, the TE and TM terms in the far field are partially polarized. The whole beam is also partially polarized except on the propagating axis. Moreover, the degrees of polarization of TE and TM terms are both larger than that of the whole beam.

  4. A universal expression of near-filed/far-field boundary in stratified structures

    CERN Document Server

    Li, Chao; Wang, Huai Yu; Wang, Xue Hua

    2015-01-01

    The division of the near-field and far-field zones for electromagnetic waves is important for simplifying theoretical calculations and applying far-field results. In this paper, we have studied the far-field asymptotic behaviors of dipole radiations in stratified backgrounds and obtained a universal empirical expression of near-field/far-field (NFFF) boundary. The boundary is mainly affected by lateral waves, which corresponds to branch point contributions in Sommerfeld integrals. In a semispace with a higher refractive index, the NFFF boundary is determined by a dimensional parameter and usually larger than the operating wavelength by at least two orders of magnitude. In a semispace with the lowest refractive index in the structure (usually air), the NFFF boundary is about ten wavelengths. Moreover, different treatments in the asymptotic method are discussed and numerically compared. An equivalence between the field expressions obtained from the asymptotic method and those from reciprocal theorem is demonstr...

  5. DESIGN EARTHQUAKES AND SEISMIC DEMAND FOR PBEE IN FAR-FIELD AND NEAR-SOURCE CONDITIONS

    OpenAIRE

    Chioccarelli, Eugenio

    2010-01-01

    In this thesis the problem of identification of design earthquakes and seismic demand for performance based earthquake engineering (PBEE) is studied referring to far-field and near-source conditions. Ordinary probability seismic hazard analyses (PSHA), usually referred to far-field conditions, are the base of hazard evaluation of the most advanced seismic codes (e.g. Eurocode 8, 2006, CS.LL.PP. 2008, etc.). PSHA allows to identify for each considered site the probability of exceedance of ...

  6. Near-field/far-field interface of a near-surface low level radioactive waste site

    OpenAIRE

    Beadle, Ian R.; S. Boult; Graham, J.; Hand, V. L.; Humphreys, Paul; Trivedi, D. P.; Warwick, P.

    2004-01-01

    Experimental and Modelling studies have been used to investigate the biogeochemical processes occurring at the interface zone between the near-field and far-field of the Drigg Low- Level radioactive Waste (LLW) trenches. These have led to a conceptual model of interface biogeochemistry, which has subsequently been modelled by the BNFL code known as the Generalised Repository Model (GRM). GRM simulations suggest that as organic rich leachate migrates into the far-field, iron III minerals such ...

  7. One-dimensional Fibonacci grating for far-field super-resolution imaging.

    Science.gov (United States)

    Wu, Kedi; Wang, Guo Ping

    2013-06-15

    One-dimensional Fibonacci gratings are used to transform evanescent waves into propagating waves for far-field super-resolution imaging. By detecting far-field intensity distributions of light through objects in front of the Fibonacci grating in free space, we can observe the objects with nearly λ/9 spatial resolution. Analytical results are verified by numerical simulations. We also discuss the effect of sampling error on imaging resolution of the system. PMID:23938967

  8. Approximate analytical expressions of apertured broadband beams in the far field

    Institute of Scientific and Technical Information of China (English)

    Lu Shi-Zhuan; You Kai-Ming; Chen Lie-Zun; Wang You-Wen

    2011-01-01

    The approximate analytical expressions of the apertured broadband beams in the far field with Gaussian and Laguerre-Gaussian spatial modes are presented. For the radially polarized Laguerre-Gaussian beam, the result reveals that the electromagnetic field in the far field is transverse magnetic. The influences of bandwidth (Γ) and truncation parameter (C0) on the transverse intensity distribution of the Gaussian beam and on the energy flux distribution of radially polarized Laguerre-Gaussian beam are analysed.

  9. Coexistence of Near-Field and Far-Field Sources: the Angular Resolution Limit

    International Nuclear Information System (INIS)

    Passive source localization is a well known inverse problem in which we convert the observed measurements into information about the direction of arrivals. In this paper we focus on the optimal resolution of such problem. More precisely, we propose in this contribution to derive and analyze the Angular Resolution Limit (ARL) for the scenario of mixed Near-Field (NF) and Far-Field (FF) Sources. This scenario is relevant to some realistic situations. We base our analysis on the Smith's equation which involves the Cramér-Rao Bound (CRB). This equation provides the theoretical ARL which is independent of a specific estimator. Our methodology is the following: first, we derive a closed-form expression of the CRB for the considered problem. Using these expressions, we can rewrite the Smith's equation as a 4-th order polynomial by assuming a small separation of the sources. Finally, we derive in closed-form the analytic ARL under or not the assumption of low noise variance. The obtained expression is compact and can provide useful qualitative informations on the behavior of the ARL

  10. Combustion noise from gas turbine aircraft engines measurement of far-field levels

    Science.gov (United States)

    Krejsa, Eugene A.

    1987-01-01

    Combustion noise can be a significant contributor to total aircraft noise. Measurement of combustion noise is made difficult by the fact that both jet noise and combustion noise exhibit broadband spectra and peak in the same frequency range. Since in-flight reduction of jet noise is greater than that of combustion noise, the latter can be a major contributor to the in-flight noise of an aircraft but will be less evident, and more difficult to measure, under static conditions. Several methods for measuring the far-field combustion noise of aircraft engines are discussed in this paper. These methods make it possible to measure combustion noise levels even in situations where other noise sources, such as jet noise, dominate. Measured far-field combustion noise levels for several turbofan engines are presented. These levels were obtained using a method referred to as three-signal coherence, requiring that fluctuating pressures be measured at two locations within the engine core in addition to the far-field noise measurement. Cross-spectra are used to separate the far-field combustion noise from far-field noise due to other sources. Spectra and directivities are presented. Comparisons with existing combustion noise predictions are made.

  11. Near-field and far-field goniophotometry of focused LED arrays

    Science.gov (United States)

    Jacobs, Valéry A.; Forment, Stefaan; Rombauts, Patrick; Hanselaer, Peter

    2014-05-01

    Luminaires are conventionally modeled using a far-field representation. To calculate this representation, a photometer revolves a light source at fixed distance and illuminances are measured in a set of angular directions. Using the inversesquare- law, the far-field intensity, also termed luminous intensity distribution is then calculated. For Lambertian sources, the far-field starts from a distance of five times the maximal dimension of a light source; which is called the limiting photometric distance. The advent of luminaires composed of LED arrays with narrow beams have shown that this limit is no longer valid and far larger distances (up to 15 times the maximal diameter) are suggested by the lighting community. This problem is even more outspoken when the individual LEDs are focused at close distance, as in e.g. surgical luminaires. To overcome these problems, we exploit the use of a near-field representation to describe an array of two narrow-beam LEDs focused at close distance. For such a test source, this paper shows how a near-field luminance goniometer is able to construct ray-data. Ray files can be used to calculate a near-field representation and far-field representation of a light source. These measurements are validated by a theoretical derivation of the intensity of an array, using a simple analytical model to describe the emission of the individual LEDs. This near-field approach makes discussions to determine the far-field photometric distance superfluous.

  12. Fast evaluation of far-field signals for time-domain wave propagation

    CERN Document Server

    Field, Scott E

    2014-01-01

    Time-domain simulation of wave phenomena on a finite computational domain often requires a fictitious outer boundary. An important practical issue is the specification of appropriate boundary conditions on this boundary, often conditions of complete transparency. Attention to this issue has been paid elsewhere, and here we consider a different, although related, issue: far-field signal recovery. Namely, from smooth data recorded on the outer boundary we wish to recover the far-field signal which would reach arbitrarily large distances. These signals encode information about interior scatterers and often correspond to actual measurements. This article expresses far-field signal recovery in terms of time-domain convolutions, each between a solution multipole moment recorded at the boundary and a sum-of-exponentials kernel. Each exponential corresponds to a pole term in the Laplace transform of the kernel, a finite sum of simple poles. Greengard, Hagstrom, and Jiang have derived the large-$\\ell$ (spherical-harmo...

  13. Analysis of ventilation systems subjected to explosive transients: far-field analysis

    International Nuclear Information System (INIS)

    Progress in developing a far-field explosion simulation computer code is outlined. The term far-field implies that this computer code is suitable for modeling explosive transients in ventilation systems that are far removed from the explosive event and are rather insensitive to the particular characteristics of the explosive event. This type of analysis is useful when little detailed information is available and the explosive event is described parametrically. The code retains all the features of the TVENT code and allows completely compressible flow with inertia and choking effects. Problems that illustrate the capabilities and limitations of the code are described

  14. Efficient Compression of Far Field Matrices in Multipole Algorithms based on Spherical Harmonics and Radiating Modes

    Directory of Open Access Journals (Sweden)

    Arne Schroeder

    2012-08-01

    Full Text Available This paper proposes a compression of far field matrices in the fast multipole method and its multilevel extension for electromagnetic problems. The compression is based on a spherical harmonic representation of radiation patterns in conjunction with a radiating mode expression of the surface current. The method is applied to study near field effects and the far field of an antenna placed on a ship surface. Furthermore, the electromagnetic scattering of an electrically large plate is investigated. It is demonstrated, that the proposed technique leads to a significant memory saving, making multipole algorithms even more efficient without compromising the accuracy.

  15. Unstable resonator system producing a high irradiance beam in the far field

    International Nuclear Information System (INIS)

    Laser systems comprising an unstable resonator and optics for increasing the magnification of the output beam from the resonator to concentrate the power distribution in the far field are disclosed. The resonator device produces a beam of laser energy which is an annulus in cross section and matched optics change the energy distribution in the annulus; both refractory and reflecting optics are disclosed. Also graphs describing the intensity distribution of the annular beam under various conditions in both the near field and far field locations in the optical system are provided

  16. Polarization-current-based, finite-difference time-domain, near-to-far-field transformation.

    Science.gov (United States)

    Zeng, Yong; Moloney, Jerome V

    2009-05-15

    A near-to-far-field transformation algorithm for three-dimensional finite-difference time-domain is presented in this Letter. This approach is based directly on the polarization current of the scatterer, not the scattered near fields. It therefore eliminates the numerical errors originating from the spatial offset of the E and H fields, inherent in the standard near-to-far-field transformation. The proposed method is validated via direct comparisons with the analytical Lorentz-Mie solutions of plane waves scattered by large dielectric and metallic spheres with strong forward-scattering lobes. PMID:19448834

  17. Some properties on far-field pattern of scattering by penetrable obstacle in ocean waveguide

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    This paper is concerned with the properties of propagation far-field patterns corresponding to the scattering of time harmonic acoustic waves by a bounded penetrable obstacle in an ocean waveguide.The sets of solutions to the transmission problem are constructed such that the restriction of these solutions to the boundary of the penetrable obstacle is dense in a Hilbert space.Then conditions under which a set of propagation far-field patterns is complete in a Hilbert space are determined.These properties are important in investigating inverse transmission problems in an ocean waveguide.

  18. Far-field breakup of spiral waves in the plankton ecological systems

    CERN Document Server

    Liu, Quan-Xing

    2007-01-01

    For oscillatory conditions, breakup of the spiral waves far away from the spiral core (as so-called "far-field breakup") was reported in a simple activator-inhibitor model by Markus B\\"{a}r, Michal Or-Guil and Lutz Brusch [Phys. Rev. Lett. \\textbf{82}, 1160 (1999) and New J. Phys. \\textbf{6}, 5 (2004)], which is in the chemical reaction-diffusion system. In present letter, the scenario in the plankton ecological system is reported. The spatial plankton model is studied numerically by computer and we find that the far-field breakup also exists in the oceanic ecological systems over a range of diffusion coefficients of phytoplankton and zooplankton. The far-field breakup leading to the spatial chaos patterns can be verified in field observation and is useful to understand the population dynamics of oceanic ecological systems. It also indicates that the far-field breakup may be a common phenomenon in the world. Finally, we give some illumination from the ecological meaning.

  19. Analysis of atrial sensed far-field ventricular signals : A reassessment

    NARCIS (Netherlands)

    Brouwer, J; Nagelkerke, D; denHeijer, P; Mulder, H; Begemann, MJS; Lie, KI; Ruiter, Jaap H.

    1997-01-01

    Accurate detection of the spontaneous far-field ventricular signal may be used to determine the ventricular activation, and hence, the interval from atrial stimulus to the ventricular R wave (AR interval) using a standard atrial pacing lead. This can be useful in developing a physiological atrial ra

  20. Anomalous spectral shift of near- and far-field plasmonic resonances in nano-gaps

    CERN Document Server

    Lombardi, Anna; Weller, Lee; Andrae, Patrick; Benz, Felix; Chikkaraddy, Rohit; Aizpurua, Javier; Baumberg, Jeremy J

    2016-01-01

    The near-field and far-field spectral response of plasmonic systems are often assumed to be identical, due to the lack of methods that can directly compare and correlate both responses under similar environmental conditions. We develop a widely-tuneable optical technique to probe the near-field resonances within individual plasmonic nanostructures that can be directly compared to the corresponding far-field response. In tightly-coupled nanoparticle-on-mirror constructs with nanometer-sized gaps we find >40meV blueshifts of the near-field compared to the dark-field scattering peak, which agrees with full electromagnetic simulations. Using a transformation optics approach, we show such shifts arise from the different spectral interference between different gap modes in the near- and far-field. The control and tuning of near-field and far-field responses demonstrated here is of paramount importance in the design of optical nanostructures for field-enhanced spectroscopy, as well as to control near-field activity ...

  1. Analytical Prediction and Optimization of Far-Field Pyroshock Test Procedures

    Science.gov (United States)

    Lacher, Alexander; Jungel, Nikolas; von Wagner, Utz; Bager, Annette

    2012-07-01

    The simulation of far-field pyroshocks is mainly performed by the use of mechanical or mechatronic devices such as hammer pendulums, shakers and piezoactors. Latter show limitations concerning frequency and acceleration ranges which does not hold for hammer pendulums or bolt guns. Their controllability, however, is rather unsatisfactory and there still exists a general lack of computational prediction tools for usually time consuming and costly far-field pyroshock tests. Mechanical minimal models of existing hammer test devices are presented and investigated by the use of the finite element and analytical methods. The tedious mechanical impact problem is reduced by introducing a nonlinear compressive spring connecting striking partners. Computational test results are verified by experiments and optimized by an evolution strategy allowing for determination of optimum test parameters. The algorithms developed are the basis for fast and efficient predictions of pyroshock tests.

  2. Far Field Evolution of Momentum Driven and Scalar Dominated Flow Field

    Directory of Open Access Journals (Sweden)

    V. Ilangovan

    2016-01-01

    Full Text Available To capture the effect of initial conditions in far field evolution of momentum driven and scalar dominated flow field, Witze scaling has been used for collapsing vector and scalar data to attain asymptotic state at self-preserving region of the jet. It incorporates the initial mass, momentum, energy to capture the effect of heating level on both near and far field development of strongly heated coaxial turbulent round air jets entering into quiescent ambient. This paper compares the effectiveness of potential core length and jet effective diameter as the length scales to collapse both mean and fluctuating components of velocity vector and temperature scalar. Similarity considerations with Witze length scale using the initial momentum flux and buoyancy flux gives a good collapse at all levels of heating.

  3. Fusion of regularized femtosecond filaments in air: far field on-axis emission

    Science.gov (United States)

    Shipilo, D. E.; Panov, N. A.; Sunchugasheva, E. S.; Mokrousova, D. V.; Andreeva, V. A.; Kosareva, O. G.; Seleznev, L. V.; Savel’ev, A. B.; Ionin, A. A.; Chin, S. L.

    2016-11-01

    The fusion of several coherent 800 nm femtosecond filaments is induced experimentally and numerically by transmitting a beam through a mask with circular apertures followed by the focusing lens. The far-field image of the four-filament fusion region reveals bright on-axis maximum and differs drastically from the diffraction pattern of a low energy beam propagating through the mask in the linear regime. In 3D+time numerical simulations with the carrier wave resolved we show a factor-of-5 saturable growth in the peak plasma density with successive increase in the number of mask openings. An overall spectral blueshift of the fundamental and the third harmonics follows the plasma density increase. The simulated far-field on-axis emission agrees with the experiment and serves as the indication of nonlinear interaction in the fusion region.

  4. Far-field mapping of the longitudinal magnetic and electric optical fields

    CERN Document Server

    Ecoffey, C

    2013-01-01

    In this letter, we demonstrate the experimental mapping of the longitudinal magnetic and electric optical fields with a standard scanning microscope that involves a high numerical aperture far-field objective. The imaging concept relies upon the insertion of an azimuthal or a radial polarizer within the detection path of the microscope which acts as an optical electromagnetic filter aimed at transmitting selectively to the detector the signal from the magnetic or electric longitudinal fields present in the detection volume, respectively. The resulting system is thus versatile, non invasive, of high resolution, and shows high detection efficiencies. Magnetic optical properties of physical and biological micro and nano-structures may thus be revealed with a far-field microscope.

  5. Review of speciation and solubility of radionuclides in the near and far field. Pt. 2

    International Nuclear Information System (INIS)

    This report represents Part 2 in a series of three reports which review the speciation and solubility of radionuclides in the near and far field. Part 2 is a general bibliography from 1978 to 1991. This report contains the bibliography for the review of speciation and solubility radionuclides in the near and far field from 1978 to 1991. The importance of the solubility and speciation of radionuclides in relation to the safety assessment of the repository is discussed. Solubility is defined, both theoretically and pragmatically, and the factors which influence solubility and speciation are discussed. The literature search was performed using the INIS database. The UKAEA RECAP database, the NIREX report bibliography and a list of DOE reports provided by the DOE were also used. The bibliography is divided into five sections, solubility and speciation experimental data, basic thermodynamic data, solubility limiting solid phases, experimental design and review and overview articles. Some references appear in more than one section. (Author)

  6. Evaluation of Near/Far Field and Directivity of Ultrasonic Transducer for Turbine Rotor Disc

    International Nuclear Information System (INIS)

    Near/far field length and directivity of transducers were investigated for the improvement and evaluation of the detectability of flaws in a disc. The reference block is fabricated for the disc of stage 6 in Yonggwang unit 1. The near/far field and directivity of an ultrasonic transducer with the center frequency of 5MHz were calculated for the inspection of the disc. These values showed good agreements with the experimental results. In the system composed of a wedge and a disc, those are evaluated theoretically and experimentally for the specimen with the artificial flaws of the size 2mm and 4mm and an ultrasonic transducer with the center frequency 5MHz and diameter 0.5 inch. The detectability of keyway-flaw and detectable region for inspection were evaluated by using both tangential 45 .deg. and 90 .deg. transducers located at the distance of 53mm and 75mm from the disc hub, respectively

  7. Examination of Far-Field Mathematical Absorber Reflection Suppression through Computational Electromagnetic Simulation

    Directory of Open Access Journals (Sweden)

    S. F. Gregson

    2012-01-01

    Full Text Available The mathematical absorber reflection suppression (MARS technique has been used to identify and then suppress the effects of spurious scattering within spherical, cylindrical, and planar near-field antenna measurement systems, compact antenna test ranges (CATRs, and far-field measurement facilities for some time now. The recent development of a general-purpose three-dimensional computational electromagnetic model of a spherical antenna test system has enabled the MARS measurement and postprocessing technique to be further investigated. This paper provides an overview of the far-field MARS technique and presents an introduction to the computational electromagnetic range model. Preliminary results of computational electromagnetic range simulations that replicate typical MARS measurement configurations are presented and discussed which, for the first time, confirm through simulation many of the observations that have previously been noted using purely empirical techniques.

  8. Far-field Imaging beyond the Diffraction Limit Using a Single Radar

    CERN Document Server

    Li, Lianlin; Cui, Tiejun; Tan, Yunhua; Yao, Kan

    2014-01-01

    Far-field imaging beyond the diffraction limit is a long sought-after goal in various imaging applications, which requires usually an array of antennas or mechanical scanning. Here, we present an alternative and novel concept for this challenging problem: a single radar system consisting of a spatial-temporal resonant aperture antenna (referred to as the slavery antenna) and a broadband horn antenna (termed the master antenna). We theoretically demonstrate that such resonant aperture antenna is responsible for converting parts of the evanescent waves into propagating waves, and delivering them to the far-field. We also demonstrate that there are three basic requirements on the proposed subwavelength imaging strategy: the strong spatial-temporal dispersive aperture, the near-field coupling, and the temporal (or broadband) illumination. Such imaging concept of a single radar provides unique ability to produce real-time data when an object is illuminated by broadband electromagnetic waves, which lifts up the har...

  9. Far-field subwavelength imaging from a single broadband antenna in combined with strongly disordered medium

    CERN Document Server

    Li, Lianlin; Cui, Tie Jun

    2014-01-01

    The far-field subwavlength imaging is a challenging issue. In this letter we demonstrate numerically that the far-field subwavelength imaging of weakly scattering objects can be obtained by processing the data acquired by a single antenna, which benefits from the use of the strongly disordered medium. A mathematical model has been proposed for solving such problem based on the idea of sparse reconstruction. Moreover, this study leads to an important conclusion that the strongly disordered medium can serves as an efficient apparatus for the single-antenna compressive measurement, which shifts the complexity of devising compressive sensing (CS) hardware from the design, fabrication and electronic control. The proposed method and associated results can find applications in several imaging disciplines, such as optics, THz, RF or ultrasound imaging.

  10. Multi-pulse pumping for far-field super-resolution imaging

    Science.gov (United States)

    Requena, Sebastian; Raut, Sangram; Doan, Hung; Kimball, Joe; Fudala, Rafal; Borejdo, Julian; Gryczynski, Ignacy; Strzhemechny, Yuri; Gryczynski, Zygmunt

    2016-02-01

    Recently, far-field optical imaging with a resolution significantly beyond diffraction limit has attracted tremendous attention allowing for high resolution imaging in living objects. Various methods have been proposed that are divided in to two basic approaches; deterministic super-resolution like STED or RESOLFT and stochastic super-resolution like PALM or STORM. We propose to achieve super-resolution in far-field fluorescence imaging by the use of controllable (on-demand) bursts of pulses that can change the fluorescence signal of long-lived component over one order of magnitude. We demonstrate that two beads, one labeled with a long-lived dye and another with a short-lived dye, separated by a distance lower than 100 nm can be easily resolved in a single experiment. The proposed method can be used to separate two biological structures in a cell by targeting them with two antibodies labeled with long-lived and short-lived fluorophores.

  11. Focusing far-field nanoscale optical needles by planar nanostructured metasurfaces

    Science.gov (United States)

    Liu, Tao; Wang, Tong; Yang, Shuming; Jiang, Zhuangde

    2016-08-01

    Far-field nanoscale optical needles are obtained using water-immersed planar nanostructured metasurfaces illuminated with a 193 nm deep ultra-violet laser. The method is based on the vectorial angular spectrum theory and an established nonlinear optimization model. For a 50 μm-diameter metasurface with a linearly polarized beam (x-polarized), an optical needle with 12.4λ0 length has been produced at a mid-focal distance of 14.5 μm. The transverse beam sizes are as small as 129 nm and 59.4 nm in the x and y directions, respectively. The design results are agreed well with the rigorous electromagnetic calculations using three-dimensional finite-difference time-domain (FDTD) method with a suggested 25 nm-thick aluminum coating film for the metasurface. These far-field nanoscale optical needles are potentially applied in the fields of nanolithography, nanoprinting, and nanoscopy.

  12. Algorithm of far-field centre estimation based on phase-only matched filter

    Institute of Scientific and Technical Information of China (English)

    Gao Yan-Qi; Zhu Bao-Qiang; Liu Dai-Zhong; Liu Xiao-Feng; Lin Zun-Qi

    2009-01-01

    Estimation of the far-field centre is carried out in beam auto-alignment. In this paper, the features of the far-field of a square beam are presented. Based on these features, a phase-only matched filter is designed, and the algorithm of centre estimation is developed. Using the simulated images with different kinds of noise and the 40 test images that are taken in sequence, the accuracy of this algorithm is estimated. Results show that the error is no more than one pixel for simulated noise images with a 99% probability, and the stability is restricted within one pixel for test images. Using the improved algorithm, the consumed time is reduced to 0.049 s.

  13. A far-field-viewing sensor for making analytical measurements in remote locations.

    Science.gov (United States)

    Michael, K L; Taylor, L C; Walt, D R

    1999-07-15

    We demonstrate a far-field-viewing GRINscope sensor for making analytical measurements in remote locations. The GRINscope was fabricated by permanently affixing a micro-Gradient index (GRIN) lens on the distal face of a 350-micron-diameter optical imaging fiber. The GRINscope can obtain both chemical and visual information. In one application, a thin, pH-sensitive polymer layer was immobilized on the distal end of the GRINscope. The ability of the GRINscope to visually image its far-field surroundings and concurrently detect pH changes in a flowing stream was demonstrated. In a different application, the GRINscope was used to image pH- and O2-sensitive particles on a remote substrate and simultaneously measure their fluorescence intensity in response to pH or pO2 changes.

  14. Estimation of coupling efficiency of optical fiber by far-field method

    Science.gov (United States)

    Kataoka, Keiji

    2010-09-01

    Coupling efficiency to a single-mode optical fiber can be estimated with the field amplitudes at far-field of an incident beam and optical fiber mode. We call it the calculation by far-field method (FFM) in this paper. The coupling efficiency by FFM is formulated including effects of optical aberrations, vignetting of the incident beam, and misalignments of the optical fiber such as defocus, lateral displacements, and angle deviation in arrangement of the fiber. As the results, it is shown the coupling efficiency is proportional to the central intensity of the focused spot, i.e., Strehl intensity of a virtual beam determined by the incident beam and mode of the optical fiber. Using the FFM, a typical optics in which a laser beam is coupled to an optical fiber with a lens of finite numerical aperture (NA) is analyzed for several cases of amplitude distributions of the incident light.

  15. Study on the Optically Transparent Near-Field and Far-Field RFID Reader Antenna

    Directory of Open Access Journals (Sweden)

    Yuan Yao

    2014-01-01

    Full Text Available A study on the optically transparent RFID reader antenna which can operate in both near-field and far-field is proposed in this paper. The antenna with a dimension of 45 mm × 45 mm is fabricated using Indium tin oxide film and can operate from 915 to 935 MHz covering the China UHF RFID band. The strong and uniform magnetic field is excited by magnetic dipole source. Both simulation and measurement results are shown to illustrate the performance of the proposed antenna. The measured reading distances are up to 40 mm and 100 mm for near-field and far-field applications, respectively.

  16. Note on the classification of super-resolution in far-field microscopy and information theory

    CERN Document Server

    Passon, Oliver

    2016-01-01

    In recent years several far-field microscopy techniques have been developed which manage to overcome the diffraction limit of resolution. A unifying classification scheme for them is clearly desirable. We argue that existing schemes based on the information capacity of the optical system can not easily be extended to cover e.g., STED microscopy or techniques based on single molecule imaging. We suggest a classification based on a reconstruction of the Abbe limit.

  17. The Far Field Pattern Analysis of Vertical and Horizontal Dipole Embedded in a Dielectric Slab

    OpenAIRE

    G.Anjaneyulu; Dr. G.S.N.Raju

    2014-01-01

    The radiation characteristics of dipole antenna embedded in a dielectric slab depend on dielectric material properties. In this paper, the far field radiation characteristics of vertical and horizontal dipole antennas embedded in a dielectric slab of different thickness with a ground plane is considered and patterns are derived applying reciprocity theorem. Numerical results are presented in a graphical form to show the effects of the dielectric material on antenna pattern

  18. Far-field optical nanothermometry using individual sub-50 nm upconverting nanoparticles

    Science.gov (United States)

    Kilbane, Jacob D.; Chan, Emory M.; Monachon, Christian; Borys, Nicholas J.; Levy, Elizabeth S.; Pickel, Andrea D.; Urban, Jeffrey J.; Schuck, P. James; Dames, Chris

    2016-06-01

    We demonstrate far-field optical thermometry using individual NaYF4 nanoparticles doped with 2% Er3+ and 20% Yb3+. Isolated 20 × 20 × 40 nm3 particles were identified using only far-field optical imaging, confirmed by subsequent scanning electron microscopy. The luminescence thermometry response for five such single particles was characterized for temperatures from 300 K to 400 K. A standard Arrhenius model widely used for larger particles can still be accurately applied to these sub-50 nm particles, with good particle-to-particle uniformity (response coefficients exhibited standard deviations below 5%). With its spatial resolution on the order of 50 nm when imaging a single particle, far below the diffraction limit, this technique has potential applications for both fundamental thermal measurements and nanoscale metrology in industrial applications.We demonstrate far-field optical thermometry using individual NaYF4 nanoparticles doped with 2% Er3+ and 20% Yb3+. Isolated 20 × 20 × 40 nm3 particles were identified using only far-field optical imaging, confirmed by subsequent scanning electron microscopy. The luminescence thermometry response for five such single particles was characterized for temperatures from 300 K to 400 K. A standard Arrhenius model widely used for larger particles can still be accurately applied to these sub-50 nm particles, with good particle-to-particle uniformity (response coefficients exhibited standard deviations below 5%). With its spatial resolution on the order of 50 nm when imaging a single particle, far below the diffraction limit, this technique has potential applications for both fundamental thermal measurements and nanoscale metrology in industrial applications. Electronic supplementary information (ESI) available. See DOI: 10.1039/c6nr01479h

  19. Far-field fluorescence microscopy beyond the diffraction limit: Fluorescence imaging with ultrahigh resolution

    OpenAIRE

    Rice, James H.

    2007-01-01

    Fluorescence microscopy is an important and extensively utilised tool for imaging biological systems. However, the image resolution that can be obtained has a limit as defined through the laws of diffraction. Demand for improved resolution has stimulated research into developing methods to image beyond the diffraction limit based on far-field fluorescence microscopy techniques. Rapid progress is being made in this area of science with methods emerging that enable fluorescence imaging in the f...

  20. A Flexible Far Field Boundary Procedure for Hyperbolic Problems: Multiple Penalty Terms Applied in a Domain

    OpenAIRE

    Nordström, Jan; Abbas, Qaisar; A. Erickson, Brittany; Frenander, Hannes

    2013-01-01

    A new weak boundary procedure for hyperbolic problems is presented. We consider high order finite difference operators of summation-by-parts form with weak boundary conditions and generalize that technique. The new boundary procedure is applied at far field boundaries in an extended domain where data is known. We show how to raise the order of accuracy of the scheme, how to modify the spectrum of the resulting operator and how to construct non-reflecting properties at the boundaries. The new ...

  1. Far-field Imaging beyond the Diffraction Limit Using a Single Radar

    OpenAIRE

    Li, Lianlin; Li, Fang; Cui, Tiejun; TAN, YUNHUA; Yao, Kan

    2014-01-01

    Far-field imaging beyond the diffraction limit is a long sought-after goal in various imaging applications, which requires usually an array of antennas or mechanical scanning. Here, we present an alternative and novel concept for this challenging problem: a single radar system consisting of a spatial-temporal resonant aperture antenna (referred to as the slavery antenna) and a broadband horn antenna (termed the master antenna). We theoretically demonstrate that such resonant aperture antenna ...

  2. A Coupled Far-Field Formulation for Time-Periodic Numerical Problems in Fluid Dynamics

    Indian Academy of Sciences (India)

    Edmund Chadwick; Rabea El-Mazuzi

    2012-11-01

    Consider uniform flow past an oscillating body generating a time-periodic motion in an exterior domain, modelled by a numerical fluid dynamics solver in the near field around the body. A far-field formulation, based on the Oseen equations, is presented for coupling onto this domain thereby enabling the whole space to be modelled. In particular, examples for formulations by boundary elements and infinite elements are described.

  3. Far-Field Focus and Dispersionless Anticrossing Bands in Two-Dimensional Photonic Crystals

    Directory of Open Access Journals (Sweden)

    Xiaoshuang Chen

    2007-01-01

    Full Text Available We review the simulation work for the far-field focus and dispersionless anticrossing bands in two-dimensional (2D photonic crystals. In a two-dimensional photonic-crystal-based concave lens, the far-field focus of a plane wave is given by the distance between the focusing point and the lens. Strong and good-quality far-field focusing of a transmitted wave, explicitly following the well-known wave-beam negative refraction law, can be achieved. The spatial frequency information of the Bloch mode in multiple Brillouin zones (BZs is investigated in order to indicate the wave propagation in two different regions. When considering the photonic transmission in a 2D photonic crystal composed of a negative phase-velocity medium (NPVM, it is shown that the dispersionless anticrossing bands are generated by the couplings among the localized surface polaritons of the NPVM rods. The photonic band structures of the NPVM photonic crystals are characterized by a topographical continuous dispersion relationship accompanied by many anticrossing bands.

  4. Insights on proximity effect and multiphoton induced luminescence from gold nanospheres in far field optical microscopy

    Energy Technology Data Exchange (ETDEWEB)

    Borglin, Johan [Biomedical Photonics Group, Department of Chemistry and Molecular Biology, University of Gothenburg, Kemivägen 10, 412 96 Gothenburg (Sweden); Department of Physics, University of Gothenburg, Kemivägen 10, 412 96 Gothenburg (Sweden); Guldbrand, Stina [Department of Physics, University of Gothenburg, Kemivägen 10, 412 96 Gothenburg (Sweden); Evenbratt, Hanne [Pharmaceutical Technology, Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Kemigården 4, 412 96 Gothenburg (Sweden); Kirejev, Vladimir; Ericson, Marica B., E-mail: marica.ericson@chem.gu.se [Biomedical Photonics Group, Department of Chemistry and Molecular Biology, University of Gothenburg, Kemivägen 10, 412 96 Gothenburg (Sweden); Grönbeck, Henrik [Department of Applied Physics, Chalmers University of Technology, Kemivägen 9, 412 96 Gothenburg (Sweden)

    2015-12-07

    Gold nanoparticles can be visualized in far-field multiphoton laser-scanning microscopy (MPM) based on the phenomena of multiphoton induced luminescence (MIL). This is of interest for biomedical applications, e.g., for cancer diagnostics, as MPM allows for working in the near-infrared (NIR) optical window of tissue. It is well known that the aggregation of particles causes a redshift of the plasmon resonance, but its implications for MIL applying far-field MPM should be further exploited. Here, we explore MIL from 10 nm gold nanospheres that are chemically deposited on glass substrates in controlled coverage gradients using MPM operating in NIR range. The substrates enable studies of MIL as a function of inter-particle distance and clustering. It was shown that MIL was only detected from areas on the substrates where the particle spacing was less than one particle diameter, or where the particles have aggregated. The results are interpreted in the context that the underlying physical phenomenon of MIL is a sequential two-photon absorption process, where the first event is driven by the plasmon resonance. It is evident that gold nanospheres in this size range have to be closely spaced or clustered to exhibit detectable MIL using far-field MPM operating in the NIR region.

  5. The spectral shift between near- and far-field resonances of optical nano-antennas.

    Science.gov (United States)

    Menzel, Christoph; Hebestreit, Erik; Mühlig, Stefan; Rockstuhl, Carsten; Burger, Sven; Lederer, Falk; Pertsch, Thomas

    2014-04-21

    Within the past several years a tremendous progress regarding optical nano-antennas could be witnessed. It is one purpose of optical nano-antennas to resonantly enhance light-matter interactions at the nanoscale, e.g. the interaction of an external illumination with molecules. In this specific, but in almost all schemes that take advantage of resonantly enhanced electromagnetic fields in the vicinity of nano-antennas, the precise knowledge of the spectral position of resonances is of paramount importance to fully exploit their beneficial effects. Thus far, however, many nano-antennas were only optimized with respect to their far-field characteristics, i.e. in terms of their scattering or extinction cross sections. Although being an emerging feature in many numerical simulations, it was only recently fully appreciated that there exists a subtle but very important difference in the spectral position of resonances in the near-and the far-field. With the purpose to quantify this shift, Zuloaga et al. suggested a Lorentzian model to estimate the resonance shift. Here, we devise on fully analytical grounds a strategy to predict the resonance in the near-field directly from that in the far-field and disclose that the issue is involved and multifaceted, in general. We outline the limitations of our theory if more sophisticated optical nano-antennas are considered where higher order multipolar contributions and higher order antenna resonances become increasingly important. Both aspects are highlighted by numerically studying relevant nano-antennas.

  6. Insights on proximity effect and multiphoton induced luminescence from gold nanospheres in far field optical microscopy

    International Nuclear Information System (INIS)

    Gold nanoparticles can be visualized in far-field multiphoton laser-scanning microscopy (MPM) based on the phenomena of multiphoton induced luminescence (MIL). This is of interest for biomedical applications, e.g., for cancer diagnostics, as MPM allows for working in the near-infrared (NIR) optical window of tissue. It is well known that the aggregation of particles causes a redshift of the plasmon resonance, but its implications for MIL applying far-field MPM should be further exploited. Here, we explore MIL from 10 nm gold nanospheres that are chemically deposited on glass substrates in controlled coverage gradients using MPM operating in NIR range. The substrates enable studies of MIL as a function of inter-particle distance and clustering. It was shown that MIL was only detected from areas on the substrates where the particle spacing was less than one particle diameter, or where the particles have aggregated. The results are interpreted in the context that the underlying physical phenomenon of MIL is a sequential two-photon absorption process, where the first event is driven by the plasmon resonance. It is evident that gold nanospheres in this size range have to be closely spaced or clustered to exhibit detectable MIL using far-field MPM operating in the NIR region

  7. Far-field beam-pattern of a twin-slot HEB mixer at 600GHz

    Science.gov (United States)

    Zhou, Kangmin; Delorme, Yan; Lefevre, Roland; Dauplay, Frederic; Feret, Alexandre; Vacelet, Thibaut; Lou, Zheng; Shi, Sheng-Cai

    2014-11-01

    In this paper, we report on the measured and simulated far-field beam-patterns of a quasi-optical NbN superconducting hot electron bolometer (HEB) mixer at 600GHz. This superconducting HEB mixer consists of an extended hemispherical lens with a diameter of 12.7mm and an extension length of 2.45mm, a twin-slot planar antenna (two slots measuring 148.5μm × 10.4μm with a separation of 78.98μm) and a 5.5-nm thick NbN thin-film micro-bridge with an area of 2μm × 0.2μm . The far-field beam pattern of this mixer is measured by a direct-detection technique with a dynamic range of nearly 25dB, showing an FWHM beam angle of 2.7° and -18dB level of the first side-lobe. The measured beam of the quasi-optical mixer is nearly collimated and has good Gaussian beam efficiency. In addition, the far-field beam-pattern is measured at different DC bias voltages of the superconducting HEB mixer and at different bath temperatures. The measured results are compared with the ones simulated by two different methods. Detailed measurement and simulation results will be presented.

  8. Two-Dimensional Far Field Source Locating Method with Nonprior Velocity

    Directory of Open Access Journals (Sweden)

    Qing Chen

    2016-01-01

    Full Text Available Relative position of seismic source and sensors has great influence on locating accuracy, particularly in far field conditions, and the accuracy will decrease seriously due to limited calculation precision and prior velocity error. In order to improve the locating accuracy of far field sources by isometric placed sensors in a straight line, a new locating method with nonprior velocity is proposed. After exhaustive research, this paper states that the hyperbola which is used for locating will be very close to its asymptote when seismic source locates in far field of sensors; therefore, the locating problem with prior velocity is equivalent to solving linear equations and the problem with nonprior velocity is equivalent to a nonlinear optimization problem with respect to the unknown velocity. And then, this paper proposed a new locating method based on a one-variable objective function with respect to the unknown velocity. Numerical experiments show that the proposed method has faster convergence speed, higher accuracy, and better stability.

  9. Experimental Verification of the Spectral Shift between Near- and Far-Field Peak Intensities of Plasmonic Nanoantennas

    CERN Document Server

    Alonso-Gonzalez, P; Neubrech, F; Huck, Christian; Chen, J; Golmar, F; Casanova, F; Hueso, L E; Pucci, A; Aizpurua, J; Hillenbrand, R

    2013-01-01

    Theory predicts a distinct spectral shift between the near- and far-field optical responses of plasmonic antennas. Here we combine near-field optical microscopy and far-field spectroscopy of individual infrared-resonant nanoantennas to verify experimentally this spectral shift. Numerical calculations corroborate our experimental results. We furthermore discuss the implications of this effect in surface-enhanced infrared spectroscopy (SEIRS).

  10. Controlling activation site density by low-energy far-field stimulation in cardiac tissue

    Science.gov (United States)

    Hörning, Marcel; Takagi, Seiji; Yoshikawa, Kenichi

    2012-06-01

    Tachycardia and fibrillation are potentially fatal arrhythmias associated with the formation of rotating spiral waves in the heart. Presently, the termination of these types of arrhythmia is achieved by use of antitachycardia pacing or cardioversion. However, these techniques have serious drawbacks, in that they either have limited application or produce undesirable side effects. Low-energy far-field stimulation has recently been proposed as a superior therapy. This proposed therapeutic method would exploit the phenomenon in which the application of low-energy far-field shocks induces a large number of activation sites (“virtual electrodes”) in tissue. It has been found that the formation of such sites can lead to the termination of undesired states in the heart and the restoration of normal beating. In this study we investigate a particular aspect of this method. Here we seek to determine how the activation site density depends on the applied electric field through in vitro experiments carried out on neonatal rat cardiac tissue cultures. The results indicate that the activation site density increases exponentially as a function of the intracellular conductivity and the level of cell isotropy. Additionally, we report numerical results obtained from bidomain simulations of the Beeler-Reuter model that are quantitatively consistent with our experimental results. Also, we derive an intuitive analytical framework that describes the activation site density and provides useful information for determining the ratio of longitudinal to transverse conductivity in a cardiac tissue culture. The results obtained here should be useful in the development of an actual therapeutic method based on low-energy far-field pacing. In addition, they provide a deeper understanding of the intrinsic properties of cardiac cells.

  11. A NUMERICAL MODEL OF FAR-FIELD COD CONCENTRATION DISTRIBUTION FOR NATURAL RIVER

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    A far-field numerical model is developed to simulate jet pollution into natural rivers. Its character is to compute the velocity and pollution concentration separately. The velocity is computed by SIMPLEC algorithm in boundary-fitted coordinate systems. The pollution concentration distribution is computed by developed QUAL-IIm and QAIIL 2D program. The present model was applied to the Xiantao section of the Hanjiang River a tributary of Yangtze River, and Xiangjiang River. The flow field and COD distribution are in good agreement with field data.

  12. The Optical Chirality Flux as a Useful Far-Field Probe of Chiral Near Fields

    CERN Document Server

    Poulikakos, Lisa V; McPeak, Kevin M; Burger, Sven; Niegemann, Jens; Hafner, Christian; Norris, David J

    2016-01-01

    To optimize the interaction between chiral matter and highly twisted light, quantities that can help characterize chiral electromagnetic fields near nanostructures are needed. Here, by analogy with Poynting's theorem, we formulate the time-averaged conservation law of optical chirality in lossy dispersive media and identify the optical chirality flux as an ideal far-field observable for characterizing chiral optical near fields. Bounded by the conservation law, we show that it provides precise information, unavailable from circular dichroism spectroscopy, on the magnitude and handedness of highly twisted fields near nanostructures.

  13. Near-field to far-field characterization of speckle patterns generated by disordered nanomaterials

    CERN Document Server

    Parigi, Valentina; Binard, Guillaume; Bourdillon, Céline; Maître, Agnès; Carminati, Rémi; Krachmalnicoff, Valentina; De Wilde, Yannick

    2016-01-01

    We study the intensity spatial correlation function of optical speckle patterns above a disordered dielectric medium in the multiple scattering regime. The intensity distributions are recorded by scanning near-field optical microscopy (SNOM) with sub-wavelength spatial resolution at variable distances from the surface in a range which spans continuously from the near-field (distance $ \\ll \\lambda $) to the far-field regime (distance $\\gg \\lambda $). The non-universal behavior at sub-wavelength distances reveals the connection between the near-field speckle pattern and the internal structure of the medium.

  14. Far-Field and Middle-Field Vertical Velocities Associated with Megathrust Earthquakes

    Science.gov (United States)

    Fleitout, L.; Trubienko, O.; Klein, E.; Vigny, C.; Garaud, J.; Shestakov, N.; Satirapod, C.; Simons, W. J.

    2013-12-01

    The recent megathrust earthquakes (Sumatra, Chili and Japan) have induced far-field postseismic subsidence with velocities from a few mm/yr to more than 1cm/yr at distances from 500 to 1500km from the earthquake epicentre, for several years following the earthquake. This subsidence is observed in Argentina, China, Korea, far-East Russia and in Malaysia and Thailand as reported by Satirapod et al. ( ASR, 2013). In the middle-field a very pronounced uplift is localized on the flank of the volcanic arc facing the trench. This is observed both over Honshu, in Chile and on the South-West coast of Sumatra. In Japan, the deformations prior to Tohoku earthquake are well measured by the GSI GPS network: While the East coast was slightly subsiding, the West coast was raising. A 3D finite element code (Zebulon-Zset) is used to understand the deformations through the seismic cycle in the areas surrounding the last three large subduction earthquakes. The meshes designed for each region feature a broad spherical shell portion with a viscoelastic asthenosphere. They are refined close to the subduction zones. Using these finite element models, we find that the pattern of the predicted far-field vertical postseismic displacements depends upon the thicknesses of the elastic plate and of the low viscosity asthenosphere. A low viscosity asthenosphere at shallow depth, just below the lithosphere is required to explain the subsidence at distances from 500 to 1500km. A thick (for example 600km) asthenosphere with a uniform viscosity predicts subsidence too far away from the trench. Slip on the subduction interface is unable tot induce the observed far-field subsidence. However, a combination of relaxation in a low viscosity wedge and slip or relaxation on the bottom part of the subduction interface is necessary to explain the observed postseismic uplift in the middle-field (volcanic arc area). The creep laws of the various zones used to explain the postseismic data can be injected in

  15. Near-field to far-field characterization of speckle patterns generated by disordered nanomaterials.

    Science.gov (United States)

    Parigi, Valentina; Perros, Elodie; Binard, Guillaume; Bourdillon, Céline; Maître, Agnès; Carminati, Rémi; Krachmalnicoff, Valentina; De Wilde, Yannick

    2016-04-01

    We study the intensity spatial correlation function of optical speckle patterns above a disordered dielectric medium in the multiple scattering regime. The intensity distributions are recorded by scanning near-field optical microscopy (SNOM) with sub-wavelength spatial resolution at variable distances from the surface in a range which spans continuously from the near-field (distance ≪ λ) to the far-field regime (distance ≫ λ). The non-universal behavior at sub-wavelength distances reveals the connection between the near-field speckle pattern and the internal structure of the medium. PMID:27136995

  16. Characterization of Nonparaxial Truncated Cosine-Gaussian Beams and the Beam Quality in the Far Field

    Institute of Scientific and Technical Information of China (English)

    KANG Xiao-Ping; L(U) Bai-Da

    2006-01-01

    @@ The analytical expression characterizing the propagation of nonparaxial truncated cosine-Gaussian (CoG) beams in free space is derived, and some special cases are discussed. The extended power in the bucket (PIB) is proposed to characterize the beam quality of nonparaxial truncated beams in the far field. It is shown that the extended PIB is applicable to nonparaxial truncated beams, and the PIB of nonparaxial truncated CoG beams depends on the decentred parameter, waist-width-to-wavelength ratio, truncation parameter, and bucket size chosen.

  17. Comparison of different antenna diagnostics techniques with limited far field data input

    DEFF Research Database (Denmark)

    Pivnenko, Sergey; Cappellin, Cecilia

    2015-01-01

    antenna, a large slotted waveguide array, and a small slotted waveguide array with shaped excitation. Systematic investigation is carried out to provide a relation between the number of the input antenna cuts or the size of the angular sector and the quality of the reconstructed equivalent currents......In this paper, three different antenna diagnostics techniques are compared for the case when the input far-field data represent only few complete cuts or a two-dimensional grid with a limited angular sector. The techniques are applied to several different antennas: a high-gain offset reflector...

  18. A Broadband UHF Tag Antenna For Near-Field and Far-Field RFID Communications

    Directory of Open Access Journals (Sweden)

    M. Dhaouadi

    2014-12-01

    Full Text Available The paper deals with the design of passive broadband tag antenna for Ultra-High Frequency (UHF band. The antenna is intended for both near and far fields Radio Frequency Identification (RFID applications. The meander dipole tag antenna geometry modification is designed for frequency bandwidth increasing. The measured bandwidth of the proposed broadband Tag antenna is more than 140 MHz (820–960 MHz, which can cover the entire UHF RFID band. A comparison between chip impedance of datasheet and the measured chip impedance has been used in our simulations. The proposed progressive meandered antenna structure, with an overall size of 77 mm × 14 mm × 0.787 mm, produces strong and uniform magnetic field distribution in the near-field zone. The antenna impedance is matched to common UHF chips in market simply by tuning its capacitive and inductive values since a perfect matching is required in the antenna design in order to enhance the near and the far field communications. Measurements confirm that the designed antenna exhibits good performance of Tag identification for both near-field and far-field UHF RFID applications.

  19. Far-field optical imaging and manipulation of individual spins with nanoscale resolution

    Science.gov (United States)

    Maurer, P. C.; Maze, J. R.; Stanwix, P. L.; Jiang, L.; Gorshkov, A. V.; Zibrov, A. A.; Harke, B.; Hodges, J. S.; Zibrov, A. S.; Yacoby, A.; Twitchen, D.; Hell, S. W.; Walsworth, R. L.; Lukin, M. D.

    2010-11-01

    A fundamental limit to existing optical techniques for measurementand manipulation of spin degrees of freedom is set by diffraction, which does not allow spins separated by less than about a quarter of a micrometre to be resolved using conventional far-field optics. Here, we report an efficient far-field optical technique that overcomes the limiting role of diffraction, allowing individual electronic spins to be detected, imaged and manipulated coherently with nanoscale resolution. The technique involves selective flipping of the orientation of individual spins, associated with nitrogen-vacancy centres in room-temperature diamond, using a focused beam of light with intensity vanishing at a controllable location, which enables simultaneous single-spin imaging and magnetometry at the nanoscale with considerably less power than conventional techniques. Furthermore, by inhibiting spin transitions away from the laser intensity null, selective coherent rotation of individual spins is realized. This technique can be extended to subnanometre dimensions, thus enabling applications in diverse areas ranging from quantum information science to bioimaging.

  20. Comparison of predicted far-field temperatures for discrete and smeared heat sources

    International Nuclear Information System (INIS)

    A fundamental concern in the design of the potential repository at Yucca Mountain, Nevada is the response of the host rock to the emplacement of heat-generating waste. The thermal perturbation of the rock mass has implications regarding the structural hydrologic, and geochemical performance of the potential repository. The phenomenological coupling of many of these performance aspects makes repository thermal modeling a difficult task. For many of the more complex, coupled models, it is often necessary to reduce the geometry of the potential repository to a smeared heat-source approximation. Such simplifications have impacts on induced thermal profiles that in turn may influence other predicted responses through one- or two-way thermal couplings. The effect of waste emplacement layout on host-rock thermal response was chosen as the primary emphasis of this study. Using a consistent set of modeling and input assumptions, far-field thermal response predictions were made for discrete-source as well as plate source approximations of the repository geometry. Input values used in the simulations are consistent with a design-basis areal power density (APD) of 80 kW/acre as would be achieved assuming a 2010 emplacement start date, a levelized receipt schedule, and a limitation on available area as published in previous design studies. It was found that edge effects resulting from general repository layout have a significant influence on the shapes and extents of isothermal profiles, and should be accounted for in far-field modeling efforts

  1. Far-field nanoscale infrared spectroscopy of vibrational fingerprints of molecules with graphene plasmons

    Science.gov (United States)

    Hu, Hai; Yang, Xiaoxia; Zhai, Feng; Hu, Debo; Liu, Ruina; Liu, Kaihui; Sun, Zhipei; Dai, Qing

    2016-07-01

    Infrared spectroscopy, especially for molecular vibrations in the fingerprint region between 600 and 1,500 cm-1, is a powerful characterization method for bulk materials. However, molecular fingerprinting at the nanoscale level still remains a significant challenge, due to weak light-matter interaction between micron-wavelengthed infrared light and nano-sized molecules. Here we demonstrate molecular fingerprinting at the nanoscale level using our specially designed graphene plasmonic structure on CaF2 nanofilm. This structure not only avoids the plasmon-phonon hybridization, but also provides in situ electrically-tunable graphene plasmon covering the entire molecular fingerprint region, which was previously unattainable. In addition, undisturbed and highly confined graphene plasmon offers simultaneous detection of in-plane and out-of-plane vibrational modes with ultrahigh detection sensitivity down to the sub-monolayer level, significantly pushing the current detection limit of far-field mid-infrared spectroscopies. Our results provide a platform, fulfilling the long-awaited expectation of high sensitivity and selectivity far-field fingerprint detection of nano-scale molecules for numerous applications.

  2. Holocene Relative Sea-Level Changes from Near-, Intermediate-, and Far-Field Locations

    Science.gov (United States)

    Walker, J. S.; Khan, N.; Shaw, T.; Ashe, E.; Vacchi, M.; Peltier, W. R.; Kopp, R. E.; Horton, B.

    2015-12-01

    Holocene relative sea-level (RSL) records exhibit spatial and temporal variability that arises mainly from the interaction of eustatic (land ice volume and thermal expansion) and isostatic (glacio- and hydro-) factors. We fit RSL histories from near-, intermediate-, and far-field locations with noisy-input Gaussian process models to assess rates of RSL change from selected study areas. Records from near-field regions (e.g., Antarctica, Greenland, Canada, Sweden, and Scotland) reveal a complex pattern of RSL fall from a maximum marine limit due to the net effect of eustatic sea-level rise and glacial-isostatic uplift with rates of RSL fall as great as -69 ± 9 m/ka. Intermediate-field regions (e.g., mid-Atlantic and Pacific coasts of the United States, Netherlands, Southern France, St. Croix) display variable rates of RSL rise from the cumulative effect of isostatic and eustatic factors. Fast rates of RSL rise (up to 10 ± 1 m/ka) are found in the early Holocene in regions near the center of forebulge collapse. Far-field RSL records exhibit a mid-Holocene highstand, the timing (between 8 and 4 ka) and magnitude (between <1 and 6 m) of which varies across South America, Africa, Asia and Australia regions.

  3. Modelling of far-field gas migration from a deep radioactive waste repository

    International Nuclear Information System (INIS)

    In assessing the post-closure safety of a deep radioactive waste repository, it is necessary to show that gas generated within the repository can migrate away, through the far-field geology, without affecting repository safety. This paper discusses the contribution of various mechanisms to gas migration through the far field; for example, diffusion of dissolved gas versus gas-phase movement, and bubble flow versus formation of a connected gas stream. It outlines different approaches to modelling gas movement from a repository, with simple semi-analytical models furnishing physical insights into the factors controlling gas migration in the absence of directly applicable experimental data, and more comprehensive numerical computations allowing the exploration of more detailed behaviour when appropriate data is obtained. If gas can induce groundwater movement, this could accelerate the transport of water-borne contaminants. Processes by which this could occur are noted, and the current status of work on possible effects of gas migration on groundwater movement in fractured hard rocks is indicated. 14 refs., 4 figs

  4. Far-field radially polarized focal spot from plasmonic spiral structure combined with central aperture antenna

    Science.gov (United States)

    Mao, Lei; Ren, Yuan; Lu, Yonghua; Lei, Xinrui; Jiang, Kang; Li, Kuanguo; Wang, Yong; Cui, Chenjing; Wen, Xiaolei; Wang, Pei

    2016-03-01

    Manipulation of a vector micro-beam with an optical antenna has significant potentials for nano-optical technology applications including bio-optics, optical fabrication, and quantum information processing. We have designed and demonstrated a central aperture antenna within an Archimedean spiral that extracts the bonding plasmonic field from a surface to produce a new vector focal spot in far-field. The properties of this vector focal field are revealed by confocal microscopy and theoretical simulations. The pattern, polarization and phase of the focal field are determined by the incident light and by the chirality of the Archimedean spiral. For incident light with right-handed circular polarization, the left-handed spiral (one-order chirality) outputs a micro-radially polarized focal field. Our results reveal the relationship between the near-field and far-field distributions of the plasmonic spiral structure, and the structure has the potential to lead to advances in diverse applications such as plasmonic lenses, near-field angular momentum detection, and optical tweezers.

  5. Metal/Polymer Based Stretchable Antenna for Constant Frequency Far-Field Communication in Wearable Electronics

    KAUST Repository

    Hussain, Aftab M.

    2015-10-06

    Body integrated wearable electronics can be used for advanced health monitoring, security, and wellness. Due to the complex, asymmetric surface of human body and atypical motion such as stretching in elbow, finger joints, wrist, knee, ankle, etc. electronics integrated to body need to be physically flexible, conforming, and stretchable. In that context, state-of-the-art electronics are unusable due to their bulky, rigid, and brittle framework. Therefore, it is critical to develop stretchable electronics which can physically stretch to absorb the strain associated with body movements. While research in stretchable electronics has started to gain momentum, a stretchable antenna which can perform far-field communications and can operate at constant frequency, such that physical shape modulation will not compromise its functionality, is yet to be realized. Here, a stretchable antenna is shown, using a low-cost metal (copper) on flexible polymeric platform, which functions at constant frequency of 2.45 GHz, for far-field applications. While mounted on a stretchable fabric worn by a human subject, the fabricated antenna communicated at a distance of 80 m with 1.25 mW transmitted power. This work shows an integration strategy from compact antenna design to its practical experimentation for enhanced data communication capability in future generation wearable electronics.

  6. Electromagnetic exploration of far-field super-focusing nanostructured metasurfaces.

    Science.gov (United States)

    Liu, Tao; Yang, Shuming; Jiang, Zhuangde

    2016-07-25

    Planar multi-annular nanostructured metasurfaces have provided a new way to realize far-field optical super-resolution focusing and nanoscopic imaging, due to the delicate interference of propagating waves diffracted from the metasurface mask. However, so far there are no proper methods that can be used to essentially interpret the super-focusing and nano-imaging mechanisms. This research proposes an electromagnetic methodology for the super-resolution investigation of nanostructured metasurfaces. We have physically modeled the polarization-dependent transmission effect of the subwavelength nanostructure and the vectorial imaging process of a high-numerical-aperture microscopic system. We have found theoretically and experimentally that the current design theories may produce imprecise results; the microscopic imaging experimental method can only detect transversely polarized electric field component and cannot map out three-dimensional total electric energy density distribution behind metasurfaces. This method will potentially be used in far-field nanoscopy, nanolithography, high-density optical storage, etc. PMID:27464083

  7. From superresolution to nanodetection: overview of far field optical nanoscopy techniques for nanostructures

    Science.gov (United States)

    Montgomery, P. C.; Leong-Hoi, A.; Anstotz, F.; Mitev, D.; Pramatarova, L.; Haeberlé, O.

    2016-02-01

    Far field optical nanoscopy has been brought to the forefront with the 2014 Nobel Prize for chemistry in fluorescent nanoscopy for revealing intra-cellular details of tens of nm. In this review, we present an improved classification scheme that summarizes the many optical nanoscopy techniques that exist. We place particular emphasis on unlabelledsuperresolution techniques that provide real improved resolving power and unlabellednanodetection techniques for characterizing unresolved nanostructures. Superresolution is illustrated with sub-100 nm imaging of diatoms with tomographic diffractive microscopyand adenoviruseswith submerged microsphere optical nanoscopy. Three sub-categories of nanodetectionare then presented. Contrast enhancement is illustrated with surface enhanced ellipsometric contrast microscopy for the study of bacterial motility and strobed phase contrast microscopy for measuring the mechanical properties of vesicle membranes. High sensitivity phase measurement using interference microscopy demonstrates how nanostructured surfaces and structures can be characterized in biomaterials, laser textured stainless steel and defects within thin polymer films. Finally, deconvolution is illustrated with the use of through-focus scanning optical microscopy in critical dimension measurement and characterization of 40 nm linewidths in microelectronic devices. In this way we show how new far field optical nanoscopy techniques are being developed for unlabelled characterization of nano and biomaterials.

  8. Far-field nanoscale infrared spectroscopy of vibrational fingerprints of molecules with graphene plasmons

    Science.gov (United States)

    Hu, Hai; Yang, Xiaoxia; Zhai, Feng; Hu, Debo; Liu, Ruina; Liu, Kaihui; Sun, Zhipei; Dai, Qing

    2016-01-01

    Infrared spectroscopy, especially for molecular vibrations in the fingerprint region between 600 and 1,500 cm−1, is a powerful characterization method for bulk materials. However, molecular fingerprinting at the nanoscale level still remains a significant challenge, due to weak light–matter interaction between micron-wavelengthed infrared light and nano-sized molecules. Here we demonstrate molecular fingerprinting at the nanoscale level using our specially designed graphene plasmonic structure on CaF2 nanofilm. This structure not only avoids the plasmon–phonon hybridization, but also provides in situ electrically-tunable graphene plasmon covering the entire molecular fingerprint region, which was previously unattainable. In addition, undisturbed and highly confined graphene plasmon offers simultaneous detection of in-plane and out-of-plane vibrational modes with ultrahigh detection sensitivity down to the sub-monolayer level, significantly pushing the current detection limit of far-field mid-infrared spectroscopies. Our results provide a platform, fulfilling the long-awaited expectation of high sensitivity and selectivity far-field fingerprint detection of nano-scale molecules for numerous applications. PMID:27460765

  9. Can two partially coherent cosh-Gaussian beams generate far fields with the same spectral degree of coherence?

    Institute of Scientific and Technical Information of China (English)

    Lü Su-Ye; Lü Bai-Da

    2009-01-01

    Taking partially coherent cosh-Gaussian (ChG) beams as an example of more general partially coherent beams,we have studied the spectral degree of coherence of partially coherent ChG beams in the far field. It is shown that,unlike Gaussian Schell-model (GSM) beams,in the strict sense there do not exist two partially coherent ChG beams which can generate far fields with the same spectral degree of coherence. However,under certain conditions it is possible to find two partially coherent ChG beams with the same spectral degree of coherence in the far field.

  10. Plasmonic and Mie scattering control of far-field interference for regular ripple formation on various material substrates.

    Science.gov (United States)

    Obara, Go; Maeda, Naoki; Miyanishi, Tomoya; Terakawa, Mitsuhiro; Nedyalkov, Nikolay N; Obara, Minoru

    2011-09-26

    We present experimental and theoretical results on plasmonic control of far-field interference for regular ripple formation on semiconductor and metal. Experimental observation of interference ripple pattern on Si substrate originating from the gold nanosphere irradiated by femtosecond laser is presented. Gold nanosphere is found to be an origin for ripple formation. Arbitrary intensity ripple patterns are theoretically controllable by depositing desired plasmonic and Mie scattering far-field pattern generators. The plasmonic far-field generation is demonstrated not only by metallic nanostructures but also by the controlled surface structures such as ridge and trench structures on various material substrates.

  11. Far-Field Plasmonic Resonance Enhanced Nano-Particle Image Velocimetry within a Micro Channel

    CERN Document Server

    Zhang, Zhili; Haque, Sara S; Zhang, Mingjun

    2010-01-01

    In this paper, a novel far-field plasmonic resonance enhanced nanoparticle-seeded Particle Image Velocimetry (nPIV) has been demonstrated to measure the velocity profile in a micro channel. Chemically synthesized silver nanoparticles have been used to seed the flow in the micro channel. By using Discrete Dipole Approximation (DDA), plasmonic resonance enhanced light scattering has been calculated for spherical silver nanoparticles with diameters ranging from 15nm to 200nm. Optimum scattering wavelength is specified for the nanoparticles in two media: water and air. The diffraction-limited plasmonic resonance enhanced images of silver nanoparticles at different diameters have been recorded and analyzed. By using standard PIV techniques, the velocity profile within the micro channel has been determined from the images.

  12. Optical far-field super-resolution microscopy using nitrogen vacancy center ensemble in bulk diamond

    CERN Document Server

    Li, Shen; Zhao, Bo-Wen; Dong, Yang; Zou, Chong-Wen; Guo, Guang-Can; Sun, Fang-Wen

    2016-01-01

    We demonstrate an optical far-field super-resolution microscopy using array of nitrogen vacancy centers in bulk diamond as near-field optical probes. The local optical field, which transmits through the nanostructures on the diamond surface, is measured by detecting the charge state conversion of nitrogen vacancy center. And the locating of nitrogen vacancy center with spatial resolution of 6.1 nm is realized with the charge state depletion nanoscopy. The nanostructures on the surface of diamond are then imaged with resolution below optical diffraction limit. The results offer an approach to built a general-purpose optical super-resolution microscopy and a convenient platform for high spatial resolution quantum sensing with nitrogen vacancy center.

  13. Single and dual-Gregorian reflector antenna shaped beam far-field synthesis

    Science.gov (United States)

    Mehler, M. J.

    The direct far-field G.O. synthesis of shaped beam reflector antennas has recently been treated by Mehler, Tun and Adatia (1986). These authors use a synthesis technique which exploits complex coordinates and which is based on a method originally considered by Norris and Westcott (1976). They describe the synthesis of single reflector antennas which radiate both elliptical beams and European coverage patterns. Here this technique is extended to consider a class of dual reflector antennas which possess shaped main reflectors and conic subreflectors. An example is given of a Gregorian duel reflector antenna which radiates a cross-polar field significantly smaller than that radiated by single shaped reflector antennas. In addition, the behavior of the radiation pattern as a function of the reflector diameter is investigated.

  14. Far-field and near-field investigation of plasmonic-photonic hybrid laser mode

    CERN Document Server

    Zhang, Taiping; Callard, Ségolène; jamois, Cecile; Letartre, Xavier; Chevalier, Celine; Rojo-Romeo, Pedro; Devif, Brice; Viktorovitch, Pierre

    2014-01-01

    We report an approach to achieve this goal via build a plasmonic-dielectric photonic hybrid system. We induce a defect mode based photonic crystal (PC) cavity to work as a intermedium storage as well as a near-field light source to excite a plasmonic nanoantenna (NA). In this way, a plasmonic-photonic nano-laser source is created in present experiment. The coupling condition between the two elements is investigated in far-field and near-field level. We found that the NA reduces the Q-factor of the PC-cavity. Meanwhile, the NA concentrates and enhances the laser emission of the PC-cavity. This novel hybrid dielectric-plasmonic structure may open a new avenue in the generation of nano-light sources, which can be applied in areas such as optical information storage, non-linear optics, optical trapping and detection, integrated optics, etc.

  15. Far-field nanoscale infrared spectroscopy of vibrational fingerprints of molecules with graphene plasmons

    CERN Document Server

    Hu, Hai; Zhai, Feng; Hu, Debo; Liu, Ruina; Liu, Kaihui; Sun, Zhipei; Dai, Qing

    2016-01-01

    Infrared spectroscopy, especially for molecular vibrations in the fingerprint region between 600 and 1500 cm-1, is a powerful characterization method for bulk materials. However, molecular fingerprinting at the nanoscale level still remains a significant challenge, due to weak light-matter interaction between micron-wavelengthed infrared light and nano-sized molecules. Here, we demonstrate molecular fingerprinting at the nanoscale level using our specially designed graphene plasmonic structure on CaF2 nanofilm. This structure not only avoids the plasmon-phonon hybridization, but also provides in situ electrically-tunable graphene plasmon covering the entire infrared fingerprint region, which was previously unattainable. In addition, undisturbed and highly-confined graphene plasmon offers simultaneous detection of in-plane and out-of-plane vibrational modes with ultrahigh detection sensitivity down to the sub-monolayer level, significantly pushing the current detection limit of far-field mid-infrared spectrosc...

  16. Exploiting spatiotemporal degrees of freedom for far field subwavelength focusing using time reversal in fractals

    CERN Document Server

    Dupré, Matthieu; Fink, Mathias; Lerosey, Geoffroy

    2016-01-01

    Materials which possess a high local density of states varying at a subwavelength scale theoretically permit to focus waves onto focal spots much smaller than the free space wavelength. To do so metamaterials -manmade composite media exhibiting properties not available in nature- are usually considered. However this approach is limited to narrow bandwidths due to their resonant nature. Here, we prove that it is possible to use a fractal resonator alongside time reversal to focus microwaves onto $\\lambda/15$ subwavelength focal spots from the far field, on extremely wide bandwidths. We first numerically prove that this approach can be realized using a multiple channel time reversal mirror, that utilizes all the degrees of freedom offered by the fractal resonator. Then we experimentally demonstrate that this approach can be drastically simplified by coupling the fractal resonator to a complex medium, here a cavity, that efficiently converts its spatial degrees of freedom into temporal ones. This allows to achie...

  17. Far field pacing supersedes anti-tachycardia pacing in a generic model of excitable media

    Energy Technology Data Exchange (ETDEWEB)

    Bittihn, Philip; Parlitz, Ulrich [Drittes Physikalisches Institut, Goettingen University, Friedrich-Hund-Platz 1, 37077 Goettingen (Germany); Luther, Gisela; Bodenschatz, Eberhard; Krinsky, Valentin; Luther, Stefan [Max Planck Institute for Dynamics and Self-Organization, Bunsenstrasse 10, 37073 Goettingen (Germany)], E-mail: bittihn@physik3.gwdg.de

    2008-10-15

    Removing anchored spirals from obstacles is an important step in terminating cardiac arrhythmia. Conventional anti-tachycardia pacing (ATP) has this ability, but only under very restrictive conditions. In a generic model of excitable media, we demonstrate that for unpinning spiral waves from obstacles this profound limitation of ATP can be overcome by far field pacing (FFP). More specifically, an argument is presented for why FFP includes and thus can only extend the capabilities of ATP in the configurations considered. By numerical simulations, we show that in the model there exists a parameter region in which unpinning is possible by FFP but not by ATP. The relevance of this result regarding clinical applications is discussed.

  18. Far-field characterization of the thermal dynamics in lasing microspheres

    CERN Document Server

    Ramirez, J M; Capuj, N E; Berencen, Y; Pitanti, A; Garrido, B; Tredicucci, A

    2015-01-01

    This work reports the dynamical thermal behavior of lasing microspheres placed on a dielectric substrate while they are homogeneously heated-up by the top-pump laser used to excite the active medium. The lasing modes are collected in the far-field and their temporal spectral traces show characteristic lifetimes of about 2 ms. The latter values scale with the microsphere radius and are independent of the pump power in the studied range. Finite-Element Method simulations reproduce the experimental results, revealing that the thermal dynamics is dominated by the heat dissipated towards the substrate through the medium surrounding the contact point. The characteristic system scale regarding thermal transport is of few hundreds of nanometers, thus enabling an effective toy model for investigating heat conduction in non-continuum gaseous media and near-field radiative energy transfer.

  19. Plasmonic Probe With Circular Nano-Moat for far-Field Free Nanofocusing.

    Science.gov (United States)

    Zhang, Mingqian; Wang, Tianying

    2016-12-01

    In this work, a metallic probe with a sharp tip and two half-circular nanostructures on its base is introduced and investigated. The proposed design aims at improving the detection performance of a probe for scattering scanning near-field optical microscopy in terms of enhanced signal-to-noise ratio. Under the premise of processing feasibility, the structure of the probe is designed and optimized with three-dimensional finite-difference time-domain method. And then the performance and optical property of the probe are theoretically investigated and experimentally demonstrated using a scanning near-field optical microscope with aperture probe. It is indicated that a tightly confined optical field with significantly reduced far-field background can be achieved at the tip apex of the probe. PMID:27654281

  20. An atmospheric backscatter model on wind measurements using far-field approximation method

    Institute of Scientific and Technical Information of China (English)

    SHU Weiping; ZHAO Zhengyu

    2007-01-01

    A backscatter model was developed for measuring wind field with the far-field approximation method.The theoretical computation and computer simulations with one spatial dimension show that this model can realistically describe the physical meaning and process of the three methods in wind measurements including the spaced antenna (SA) method,Doppler beam swing (DBS) method,and spaced interferometry (SI).The computational difficulties of the traditional theoretical model cannot only be smoothed away,but common characteristics and differences of the three methods can be compared deeply.The comparison of the numerical results between the Wuhan medium frequency (MF) radar (30° N,114° E) observation and the computer simulation of the full correlation analysis (FCA) of the SA method indicates that the two results agree very well and this model has practical application.

  1. Computation of unsteady transonic flows through rotating and stationary cascades. 3: Acoustic far-field analysis

    Science.gov (United States)

    Slutsky, S.; Fischer, D.; Erdos, J. I.

    1977-01-01

    A small perturbation type analysis has been developed for the acoustic far field in an infinite duct extending upstream and downstream of an axial turbomachinery stage. The analysis is designed to interface with a numerical solution of the near field of the blade rows and, thereby, to provide the necessary closure condition to complete the statement of infinite duct boundary conditions for the subject problem. The present analysis differs from conventional inlet duct analyses in that a simple harmonic time dependence was not assumed, since a transient signal is generated by the numerical near-field solution and periodicity is attained only asymptotically. A description of the computer code developed to carry out the necessary convolutions numerically is included, as well as the results of a sample application using an impulsively initiated harmonic signal.

  2. Far-Field Distributions of Double-Heterostructure Diode Lasers: an Improved Non-Equiphase Model

    Institute of Scientific and Technical Information of China (English)

    ZHAO Zhi-Guo; DUAN Kai-Liang; LU Bai-Da

    2007-01-01

    A non-equiphase Gaussian model is proposed to simulate the far-field distributions ofdouble-heterostructure diode lasers, which is physically reasonable because the phase along the junction of diode lasers could not be equal. A comparison of the numerically calculated intensity profiles in using the equal phase and non-equiphase models with the experimentally measured intensity profiles given by Nemoto shows that in the x direction perpendicular to the junction plane, the non-equiphase Gaussian model is as good as the equal phase Gaussian model. Specifically,in the y direction parallel to the junction plane and the 45° direction with respect to the x axis in the xoy plane,the numerical results by using the non-equiphase model are in good agreement with the experimental data, as the propagation distance is larger than a certain value.

  3. Coupled near-field and far-field exposure assessment framework for chemicals in consumer products

    DEFF Research Database (Denmark)

    Fantke, Peter; Ernstoff, Alexi; Huang, Lei;

    2016-01-01

    Humans can be exposed to chemicals in consumer products through product use and environmental emissions over the product life cycle. Exposure pathways are often complex, where chemicals can transfer directly from products to humans during use or exchange between various indoor and outdoor...... and efficient way to rapidly compare exposure pathways for adult and child users and for the general population. This framework constitutes a user-friendly approach to develop, compare and interpret multiple human exposure scenarios in a coupled system of near-field ('user' environment), far-field and human...... intake compartments, and helps understand the contribution of individual pathways to overall human exposure in various product application contexts to inform decisions in different science-policy fields for which exposure quantification is relevant....

  4. MARFA user's manual: Migration analysis of radionuclides in the far field

    International Nuclear Information System (INIS)

    The computer code Migration Analysis of Radionuclides in the Far Field (MARFA) uses a particle-based Monte Carlo method to simulate the transport of radionuclides in a sparsely fractured geological medium. The algorithm uses non-interacting particles to represent packets of radionuclide mass. These particles are moved through the system according to rules that mimic the underlying physical transport and retention processes. The physical processes represented in MARFA include advection, longitudinal dispersion, Fickian diffusion into an infinite or finite rock matrix, equilibrium sorption, decay, and in-growth. Because the algorithm uses non-interacting particles, the transport and retention processes are limited to those that depend linearly on radionuclide concentration. Multiple non-branching decay chains of arbitrary length are supported, as is full heterogeneity in the transport and retention properties. Two variants of the code are provided. These two versions differ in how particles are routed through the computational domain. In MARFA 3.2.3, transport is assumed to occur along a set of trajectories or pathways that originate at radionuclide source locations. The trajectories are intended to represent the movement of hypothetical, advectively transported groundwater tracers and are typically calculated by pathline tracing in a discrete fracture network flow code. The groundwater speed and retention properties along each pathway may change in time, but the pathway trajectories are fixed. MARFA 3.3.1 allows the transport effects of changing flow directions to be represented by abandoning the fixed pathways and performing node routing within MARFA. (orig.)

  5. Reconstruction of Far-Field Tsunami Amplitude Distributions from Earthquake Sources

    Science.gov (United States)

    Geist, Eric L.; Parsons, Tom

    2016-04-01

    The probability distribution of far-field tsunami amplitudes is explained in relation to the distribution of seismic moment at subduction zones. Tsunami amplitude distributions at tide gauge stations follow a similar functional form, well described by a tapered Pareto distribution that is parameterized by a power-law exponent and a corner amplitude. Distribution parameters are first established for eight tide gauge stations in the Pacific, using maximum likelihood estimation. A procedure is then developed to reconstruct the tsunami amplitude distribution that consists of four steps: (1) define the distribution of seismic moment at subduction zones; (2) establish a source-station scaling relation from regression analysis; (3) transform the seismic moment distribution to a tsunami amplitude distribution for each subduction zone; and (4) mix the transformed distribution for all subduction zones to an aggregate tsunami amplitude distribution specific to the tide gauge station. The tsunami amplitude distribution is adequately reconstructed for four tide gauge stations using globally constant seismic moment distribution parameters established in previous studies. In comparisons to empirical tsunami amplitude distributions from maximum likelihood estimation, the reconstructed distributions consistently exhibit higher corner amplitude values, implying that in most cases, the empirical catalogs are too short to include the largest amplitudes. Because the reconstructed distribution is based on a catalog of earthquakes that is much larger than the tsunami catalog, it is less susceptible to the effects of record-breaking events and more indicative of the actual distribution of tsunami amplitudes.

  6. Prediction of far-field wind turbine noise propagation with parabolic equation.

    Science.gov (United States)

    Lee, Seongkyu; Lee, Dongjai; Honhoff, Saskia

    2016-08-01

    Sound propagation of wind farms is typically simulated by the use of engineering tools that are neglecting some atmospheric conditions and terrain effects. Wind and temperature profiles, however, can affect the propagation of sound and thus the perceived sound in the far field. A better understanding and application of those effects would allow a more optimized farm operation towards meeting noise regulations and optimizing energy yield. This paper presents the parabolic equation (PE) model development for accurate wind turbine noise propagation. The model is validated against analytic solutions for a uniform sound speed profile, benchmark problems for nonuniform sound speed profiles, and field sound test data for real environmental acoustics. It is shown that PE provides good agreement with the measured data, except upwind propagation cases in which turbulence scattering is important. Finally, the PE model uses computational fluid dynamics results as input to accurately predict sound propagation for complex flows such as wake flows. It is demonstrated that wake flows significantly modify the sound propagation characteristics. PMID:27586709

  7. Probabilistic tsunami hazard assessment at Seaside, Oregon, for near-and far-field seismic sources

    Science.gov (United States)

    Gonzalez, F.I.; Geist, E.L.; Jaffe, B.; Kanoglu, U.; Mofjeld, H.; Synolakis, C.E.; Titov, V.V.; Areas, D.; Bellomo, D.; Carlton, D.; Horning, T.; Johnson, J.; Newman, J.; Parsons, T.; Peters, R.; Peterson, C.; Priest, G.; Venturato, A.; Weber, J.; Wong, F.; Yalciner, A.

    2009-01-01

    The first probabilistic tsunami flooding maps have been developed. The methodology, called probabilistic tsunami hazard assessment (PTHA), integrates tsunami inundation modeling with methods of probabilistic seismic hazard assessment (PSHA). Application of the methodology to Seaside, Oregon, has yielded estimates of the spatial distribution of 100- and 500-year maximum tsunami amplitudes, i.e., amplitudes with 1% and 0.2% annual probability of exceedance. The 100-year tsunami is generated most frequently by far-field sources in the Alaska-Aleutian Subduction Zone and is characterized by maximum amplitudes that do not exceed 4 m, with an inland extent of less than 500 m. In contrast, the 500-year tsunami is dominated by local sources in the Cascadia Subduction Zone and is characterized by maximum amplitudes in excess of 10 m and an inland extent of more than 1 km. The primary sources of uncertainty in these results include those associated with interevent time estimates, modeling of background sea level, and accounting for temporal changes in bathymetry and topography. Nonetheless, PTHA represents an important contribution to tsunami hazard assessment techniques; viewed in the broader context of risk analysis, PTHA provides a method for quantifying estimates of the likelihood and severity of the tsunami hazard, which can then be combined with vulnerability and exposure to yield estimates of tsunami risk. Copyright 2009 by the American Geophysical Union.

  8. Structuring of photosensitive material below diffraction limit using far field irradiation

    Science.gov (United States)

    Yadavalli, Nataraja Sekhar; Saphiannikova, Marina; Lomadze, Nino; Goldenberg, Leonid M.; Santer, Svetlana

    2013-11-01

    In this paper, we report on in-situ atomic force microscopy (AFM) studies of topographical changes in azobenzene-containing photosensitive polymer films that are irradiated with light interference patterns. We have developed an experimental setup consisting of an AFM combined with two-beam interferometry that permits us to switch between different polarization states of the two interfering beams while scanning the illuminated area of the polymer film, acquiring corresponding changes in topography in-situ. This way, we are able to analyze how the change in topography is related to the variation of the electrical field vector within the interference pattern. It is for the first time that with a rather simple experimental approach a rigorous assignment can be achieved. By performing in-situ measurements we found that for a certain polarization combination of two interfering beams [namely for the SP (↕, ↔) polarization pattern] the topography forms surface relief grating with only half the period of the interference patterns. Exploiting this phenomenon we are able to fabricate surface relief structures with characteristic features measuring only 140 nm, by using far field optics with a wavelength of 491 nm. We believe that this relatively simple method could be extremely valuable to, for instance, produce structural features below the diffraction limit at high-throughput, and this could significantly contribute to the search of new fabrication strategies in electronics and photonics industry.

  9. Prediction of far-field wind turbine noise propagation with parabolic equation.

    Science.gov (United States)

    Lee, Seongkyu; Lee, Dongjai; Honhoff, Saskia

    2016-08-01

    Sound propagation of wind farms is typically simulated by the use of engineering tools that are neglecting some atmospheric conditions and terrain effects. Wind and temperature profiles, however, can affect the propagation of sound and thus the perceived sound in the far field. A better understanding and application of those effects would allow a more optimized farm operation towards meeting noise regulations and optimizing energy yield. This paper presents the parabolic equation (PE) model development for accurate wind turbine noise propagation. The model is validated against analytic solutions for a uniform sound speed profile, benchmark problems for nonuniform sound speed profiles, and field sound test data for real environmental acoustics. It is shown that PE provides good agreement with the measured data, except upwind propagation cases in which turbulence scattering is important. Finally, the PE model uses computational fluid dynamics results as input to accurately predict sound propagation for complex flows such as wake flows. It is demonstrated that wake flows significantly modify the sound propagation characteristics.

  10. Tsunami Size Distributions at Far-Field Locations from Aggregated Earthquake Sources

    Science.gov (United States)

    Geist, E. L.; Parsons, T.

    2015-12-01

    The distribution of tsunami amplitudes at far-field tide gauge stations is explained by aggregating the probability of tsunamis derived from individual subduction zones and scaled by their seismic moment. The observed tsunami amplitude distributions of both continental (e.g., San Francisco) and island (e.g., Hilo) stations distant from subduction zones are examined. Although the observed probability distributions nominally follow a Pareto (power-law) distribution, there are significant deviations. Some stations exhibit varying degrees of tapering of the distribution at high amplitudes and, in the case of the Hilo station, there is a prominent break in slope on log-log probability plots. There are also differences in the slopes of the observed distributions among stations that can be significant. To explain these differences we first estimate seismic moment distributions of observed earthquakes for major subduction zones. Second, regression models are developed that relate the tsunami amplitude at a station to seismic moment at a subduction zone, correcting for epicentral distance. The seismic moment distribution is then transformed to a site-specific tsunami amplitude distribution using the regression model. Finally, a mixture distribution is developed, aggregating the transformed tsunami distributions from all relevant subduction zones. This mixture distribution is compared to the observed distribution to assess the performance of the method described above. This method allows us to estimate the largest tsunami that can be expected in a given time period at a station.

  11. Vectorial Structure of Non-Paraxial Linearly Polarized Gaussian Beam in Far Field

    Institute of Scientific and Technical Information of China (English)

    ZHOU Guo-Quan; CHEN Liang; NI Yong-Zhou

    2006-01-01

    @@ According to the vectorial structure of non-paraxial electromagnetic beams and the method of stationary phase,the analytical TE and TM terms of non-paraxial linearly polarized Gaussian beam are presented in the far field.The influence of linearly polarized angle on the relative energy flux distributions of the whole beam and its TE and TM terms is studied. The beam spot of the TE term is perpendicular to the direction of linearly polarized angle, while that of the TM term coincides with the direction of linearly polarized angle. The whole beam spot is elliptical, and the long axis is located at the direction of linearly polarized angle. The relative energy flux distribution of the TE term is relatively centralized in the direction perpendicular to the linearly polarized angle.While that of the TM term is relatively centralized in the direction of linearly polarized angle. To obtain the isolated TM and TE terms, a polarizer should be put at the long and the short axis of the whole beam. spot,respectively.

  12. SITE-94. Far-field rock mechanics modelling for nuclear waste disposal

    International Nuclear Information System (INIS)

    The objectives of the far-field rock mechanics study were to investigate the mechanical influence of thermal loading and glaciation on the stability and safety of a hypothetical repository. The Aespoe Hard Rock Laboratory test site was used as a target site for regional and local geology, in situ stress data and material properties. The study treated the rock mass as an assembly of discrete blocks defined by a number of major faults and fracture zones. Two computational models with 15 and 23 major faults and fracture zones were constructed and studied. Thermal loading due to waste emplacement and mechanical loading from a hypothetical glaciation/deglaciation cycle was applied in order to examine the global behaviour of the rock mass under such loading conditions. The problem was treated as a three-dimensional one, simulated by using the three-d distinct element method code 3DEC. From the numerical results, it was found that a maximum temperature of 48 deg C would be reached 200 years after the emplacement of the waste canisters. The average increase of maximum principal stress due to thermal loading is 9.5 MPa horizontally and 20.2 MPa vertically due to glaciation. The maximum shear displacement induced by thermal loading is 25 mm and 81.9 mm by glaciation. 15 refs

  13. EM Modeling of Far-Field Radiation Patterns for Antennas on the GMA-TT UAV

    Science.gov (United States)

    Mackenzie, Anne I.

    2015-01-01

    To optimize communication with the Generic Modular Aircraft T-Tail (GMA-TT) unmanned aerial vehicle (UAV), electromagnetic (EM) simulations have been performed to predict the performance of two antenna types on the aircraft. Simulated far-field radiation patterns tell the amount of power radiated by the antennas and the aircraft together, taking into account blockage by the aircraft as well as radiation by conducting and dielectric portions of the aircraft. With a knowledge of the polarization and distance of the two communicating antennas, e.g. one on the UAV and one on the ground, and the transmitted signal strength, a calculation may be performed to find the strength of the signal travelling from one antenna to the other and to check that the transmitted signal meets the receiver system requirements for the designated range. In order to do this, the antenna frequency and polarization must be known for each antenna, in addition to its design and location. The permittivity, permeability, and geometry of the UAV components must also be known. The full-wave method of moments solution produces the appropriate dBi radiation pattern in which the received signal strength is calculated relative to that of an isotropic radiator.

  14. Modulation and amplification of radiative far field heat transfer: Towards a simple radiative thermal transistor

    Energy Technology Data Exchange (ETDEWEB)

    Joulain, Karl; Ezzahri, Younès; Drevillon, Jérémie [Institut Pprime, Université de Poitiers-CNRS-ENSMA, UPR 3346, ENSIP Bâtiment B25, 2 Rue Pierre Brousse, TSA 41105, 86073 Poitiers Cedex 9 (France); Ben-Abdallah, Philippe [Laboratoire Charles Fabry, UMR 8501, Institut d' optique, CNRS, Université Paris-Sud 11, 2 Avenue Augustin Fresnel, 91127 Palaiseau (France)

    2015-03-30

    We show in this article that phase change materials (PCM) exhibiting a phase transition between a dielectric state and a metallic state are good candidates to perform modulation as well as amplification of radiative thermal flux. We propose a simple situation in plane parallel geometry where a so-called radiative thermal transistor could be achieved. In this configuration, we put a PCM between two blackbodies at different temperatures. We show that the transistor effect can be achieved easily when this material has its critical temperature between the two blackbody temperatures. We also see that the more the material is reflective in the metallic state, the more switching effect is realized, whereas the more PCM transition is stiff in temperature, the more thermal amplification is high. We finally take the example of VO{sub 2} that exhibits an insulator-metallic transition at 68 °C. We show that a demonstrator of a radiative transistor could easily be achieved in view of the heat flux levels predicted. Far-field thermal radiation experiments are proposed to back the results presented.

  15. Reconstruction of far-field tsunami amplitude distributions from earthquake sources

    Science.gov (United States)

    Geist, Eric L.; Parsons, Thomas E.

    2016-01-01

    The probability distribution of far-field tsunami amplitudes is explained in relation to the distribution of seismic moment at subduction zones. Tsunami amplitude distributions at tide gauge stations follow a similar functional form, well described by a tapered Pareto distribution that is parameterized by a power-law exponent and a corner amplitude. Distribution parameters are first established for eight tide gauge stations in the Pacific, using maximum likelihood estimation. A procedure is then developed to reconstruct the tsunami amplitude distribution that consists of four steps: (1) define the distribution of seismic moment at subduction zones; (2) establish a source-station scaling relation from regression analysis; (3) transform the seismic moment distribution to a tsunami amplitude distribution for each subduction zone; and (4) mix the transformed distribution for all subduction zones to an aggregate tsunami amplitude distribution specific to the tide gauge station. The tsunami amplitude distribution is adequately reconstructed for four tide gauge stations using globally constant seismic moment distribution parameters established in previous studies. In comparisons to empirical tsunami amplitude distributions from maximum likelihood estimation, the reconstructed distributions consistently exhibit higher corner amplitude values, implying that in most cases, the empirical catalogs are too short to include the largest amplitudes. Because the reconstructed distribution is based on a catalog of earthquakes that is much larger than the tsunami catalog, it is less susceptible to the effects of record-breaking events and more indicative of the actual distribution of tsunami amplitudes.

  16. Luminescent nanoparticle trapping with far-field optical fiber-tip tweezers.

    Science.gov (United States)

    Decombe, Jean-Baptiste; Valdivia-Valero, Francisco J; Dantelle, Géraldine; Leménager, Godefroy; Gacoin, Thierry; Colas des Francs, Gérard; Huant, Serge; Fick, Jochen

    2016-03-01

    We report stable and reproducible trapping of luminescent dielectric YAG:Ce(3+) nanoparticles with sizes down to 60 nm using far-field dual fiber tip optical tweezers. The particles are synthesized by a specific glycothermal route followed by an original protected annealing step, resulting in significantly enhanced photostability. The tweezers properties are analyzed by studying the trapped particles residual Brownian motion using video or reflected signal records. The trapping potential is harmonic in the transverse direction to the fiber axis, but reveals interference fringes in the axial direction. Large trapping stiffness of 35 and 2 pN μm(-1) W(-1) is measured for a fiber tip-to-tip distance of 3 μm and 300 nm and 60 nm particles, respectively. The forces acting on the nanoparticles are discussed within the dipolar approximation (gradient and scattering force contributions) or exact calculations using the Maxwell Stress Tensor formalism. Prospects for trapping even smaller particles are discussed. PMID:26883602

  17. The degenerating diffraction far-field propagation properties of the conical double half-Gaussian hollow beams

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    The far-field propagation properties of conical double half-Gaussian hollow beams in the condition of Collins formula are studied. Because of the cone angle of this kind of hollow beams, the diffraction is compensated and the inner diameter is turning bigger by the rule of geometric optics as the propagation distance is increasing, whereas the degenerating diffraction phenomenon is turned out. The far-field intensity distribution of the conical double half-Gaussian hollow beams in the condition of in-Collins formula is researched, and the results show that the far-field propagation properties can be depicted by this model. In the experiment, this kind of hollow beams are obtained by means of the dual-reflecting splitting optical system, and the inner diameter of the hollow beams is tested. The results show good agreement with the propagation theory in the condition of in-Collins formula.

  18. Linking near- and far-field hydrodynamic models for simulation of desalination plant brine discharges.

    Science.gov (United States)

    Botelho, D A; Barry, M E; Collecutt, G C; Brook, J; Wiltshire, D

    2013-01-01

    A desalination plant is proposed to be the major water supply to the Olympic Dam Expansion Mining project. Located in the Upper Spencer Gulf, South Australia, the site was chosen due to the existence of strong currents and their likely advantages in terms of mixing and dilution of discharged return water. A high-resolution hydrodynamic model (Estuary, Lake and Coastal Ocean Model, ELCOM) was constructed and, through a rigorous review process, was shown to reproduce the intricate details of the Spencer Gulf dynamics, including those characterising the discharge site. Notwithstanding this, it was found that deploying typically adopted 'direct insertion' techniques to simulate the brine discharge within the hydrodynamic model was problematic. Specifically, it was found that in this study the direct insertion technique delivered highly conservative brine dilution predictions in and around the proposed site, and that these were grid and time-step dependent. To improve the predictive capability, a strategy to link validated computational fluid dynamics (CFD) predictions to hydrodynamic simulations was devised. In this strategy, environmental conditions from ELCOM were used to produce boundary conditions for execution of a suite of CFD simulations. In turn, the CFD simulations provided the brine dilutions and flow rates to be applied in ELCOM. In order to conserve mass in a system-wide sense, artificial salt sinks were introduced to the ELCOM model such that salt quantities were conserved. As a result of this process, ELCOM predictions were naturally very similar to CFD predictions near the diffuser, whilst at the same time they produced an area of influence (further afield) comparable to direct insertion methods. It was concluded that the linkage of the models, in comparison to direct insertion methods, constituted a more realistic and defensible alternative to predict the far-field dispersion of outfall discharges, particularly with regards to the estimation of brine

  19. MARFA version 3.2.2 user's manual: migration analysis of radionuclides in the far field

    International Nuclear Information System (INIS)

    The computer code Migration Analysis of Radionuclides in the Far Field (MARFA) uses a particle-based Monte Carlo method to simulate the transport of radionuclides in a sparsely fractured geological medium. Transport in sparsely fractured rock is of interest because this medium may serve as a barrier to migration of radionuclides to the accessible environment. The physical processes represented in MARFA include advection, longitudinal dispersion, Fickian diffusion into an infinite or finite rock matrix, equilibrium sorption, decay, and in-growth. Multiple non-branching decay chains of arbitrary length are supported. This document describes the technical basis and input requirements for MARFA Version 3.2.2. MARFA Version 3.2 included new capabilities to accommodate transient flow velocities and sorption parameters, which are assumed to be piecewise constant in time. Version 3.2.1 was a minor change from Version 3.2 to allow a more convenient input format for sorption information. New capabilities in Version 3.2.2 include an option to specify a non-zero start time for the simulation, an optional input parameter that decreases the amount of retention within a single fracture because of flow channeling, and an alternative method for sampling the radionuclide source. MARFA uses the particle on random streamline segment algorithm /Painter et al. 2006/, a Monte Carlo algorithm combining time-domain random walk methods with pathway stochastic simulation. The algorithm uses non-interacting particles to represent packets of radionuclide mass. These particles are moved through the system according to rules that mimic the underlying physical transport and retention processes. The set of times required for particles to pass through the geological barrier are then used to reconstruct discharge rates (mass or activity basis). Because the algorithm uses non-interacting particles, the transport and retention processes are limited to those that depend linearly on radionuclide

  20. Modeling of coastal effluent transport: an approach to linking far-field and near-field models

    Institute of Scientific and Technical Information of China (English)

    YANG Zhaoqing; KHANGAOKAR Tarang

    2008-01-01

    One of the challenges in effluent transport modeling in coastal tidal environments is the proper specification of initial dilution in connection with the far-field transport phenomena. An approach of external linkage of far-field and near-field effluent transport models is presented, and applied to simulating the effluent transport in the Port Angeles Harbor, Washington in the Strait of Juan de Fuea. A near-field plume model was used to calculate the effluent initial dilution and a three-dimensional (3-D) hydrodynamic model was developed to simulate the tidal circulation and far-field effluent transport in the Port Angeles Harbor. The hydrodynamic model was driven by tides and surface winds. Observed water surface elevation and velocity data were used to calibrate the model over a period covering the neap-spring tidal cycle. The model was also validated with observed surface drogue trajectory data. The model successfully reproduced the tidal dynamics in the study area and good agreements between model results and observed data were obtained. It is demonstrated that the linkage between the near-field and far-field models in effluent transport modeling can be achieved through iteratively adjusting the model grid sizes such that the dilution ratio and effluent concentration in the circulation model grid cell match the concentration calculated by the near-field plume model.

  1. Emergence of spatiotemporal chaos arising from far-field breakup of spiral waves in the plankton ecological systems

    Institute of Scientific and Technical Information of China (English)

    Liu Quan-Xing; Sun Gui-Quan; Jin Zhen; Li Bai-Lian

    2009-01-01

    It has been reported that the minimal spatially extended phytoplankton-zooplankton system exhibits both tem-poral regular/chaotic behaviour, and spatiotemporal chaos in a patchy environment. As a further investigation by means of computer simulations and theoretical analysis, in this paper we observe that the spiral waves may exist and the spatiotcmporal chaos emerge when the parameters are within the mixed Turing Hopf bifurcation region, which arises from the far-field breakup of the spiral waves over a large range of diffusion coefficients of phytoplankton and zooplankton. Moreover, the spatiotemporal chaos arising from the far-field breakup of spiral waves does not gradually invade the whole space of that region. Our results arc confirmed by nonlinear bifurcation of wave trains. We also discuss ecological implications of these spatially structured patterns.

  2. Optical phase cloaking of 700 nm light waves in the far field by a three-dimensional carpet cloak.

    Science.gov (United States)

    Ergin, Tolga; Fischer, Joachim; Wegener, Martin

    2011-10-21

    Transformation optics is a design tool that connects the geometry of space and propagation of light. Invisibility cloaking is a corresponding benchmark example. Recent experiments at optical frequencies have demonstrated cloaking for the light amplitude only. In this Letter, we demonstrate far-field cloaking of the light phase by interferometric microscope-imaging experiments on the previously introduced three-dimensional carpet cloak at 700 nm wavelength and for arbitrary polarization of light.

  3. An Analysis of Mechanical Constraints when Using Superconducting Gravimeters for Far-Field Pre-Seismic Anomaly Detection

    OpenAIRE

    Shyh-Chin Lan; Teng-To Yu; Cheinway Hwang; and Ricky Kao

    2011-01-01

    Pre-seismic gravity anomalies from records obtained at a 1 Hz sampling rate from superconducting gravimeters (SG) around East Asia are analyzed. A comparison of gravity anomalies to the source parameters of associated earthquakes shows that the detection of pre-seismic gravity anomalies is constrained by several mechanical conditions of the seismic fault plane. The constraints of the far-field pre-seismic gravity amplitude perturbation were examined and the critical spatial relationship betwe...

  4. An Exact Line Integral Representation of the Physical Optics Far Field from Plane PEC Scatterers Illuminnated by Hertzian Dipoles

    DEFF Research Database (Denmark)

    Arslanagic, Samel; Meincke, Peter; Jørgensen, Erik;

    2003-01-01

    We derive a line integral representation of the physical optics scattered far field that yields the exact same result as the conventional surface radiation integral. This representation applies to a perfectly electrically conducting plane scatterer illuminated by electric or magnetic Hertzian...... dipoles. The source and observation points can take on almost arbitrary positions. To illustrate the exactness and efficiency of the new line integral, numerical comparisons with the conventional surface radiation integral are carried out....

  5. Analysis of RF Front-End Performance of Reconfigurable Antennas with RF Switches in the Far Field

    Directory of Open Access Journals (Sweden)

    Insu Yeom

    2014-01-01

    Full Text Available The RF front-end performances in the far-field condition of reconfigurable antennas employing two commonly used RF switching devices (PIN diodes and RF-MEMS switches were compared. Two types of antennas (monopole and slot representing general direct/coupled feed types were used for the reconfigurable antennas to compare the excited RF power to the RF switches by the reconfigurable antenna types. For the switching operation of the antennas, a biasing circuit was designed and embedded in the same antenna board, which included a battery to emphasize the antenna’s adaptability to mobile devices. The measurement results of each reconfigurable antenna (radiation patterns and return losses are presented in this study. The receiving power of the reference antenna was measured by varying the transmitting power of the reconfigurable antennas in the far-field condition. The receiving power was analyzed using the “Friis transmission equation” and compared for two switching elements. Based on the results of these measurements and comparisons, we discuss what constitutes an appropriate switch device and antenna type for reconfigurable antennas of mobile devices in the far-field condition.

  6. The simulation of far-field wavelets using frequency-domain air-gun array near-field wavelets

    Institute of Scientific and Technical Information of China (English)

    Song Jian-Guo; Deng Yong; Tong Xin-Xin

    2013-01-01

    Air-gun arrays are used in marine-seismic exploration. Far-field wavelets in subsurface media represent the stacking of single air-gun ideal wavelets. We derived single air-gun ideal wavelets using near-field wavelets recorded from near-field geophones and then synthesized them into far-field wavelets. This is critical for processing wavelets in marine-seismic exploration. For this purpose, several algorithms are currently used to decompose and synthesize wavelets in the time domain. If the traveltime of single air-gun wavelets is not an integral multiple of the sampling interval, the complex and error-prone resampling of the seismic signals using the time-domain method is necessary. Based on the relation between the frequency-domain phase and the time-domain time delay, we propose a method that first transforms the real near-field wavelet to the frequency domain via Fourier transforms;then, it decomposes it and composes the wavelet spectrum in the frequency domain, and then back transforms it to the time domain. Thus, the resampling problem is avoided and single air-gun wavelets and far-field wavelets can be reliably derived. The effect of ghost reflections is also considered, while decomposing the wavelet and removing the ghost reflections. Modeling and real data processing were used to demonstrate the feasibility of the proposed method.

  7. Localizing Near and Far Field Acoustic Sources with Distributed Microhone Arrays

    DEFF Research Database (Denmark)

    Hansen, Martin Weiss; Jensen, Jesper Rindom; Christensen, Mads Græsbøll

    2014-01-01

    In this paper, we consider the problem of acoustic source localization using distributed microphone arrays. Time differences of arrival (TDOAs) are estimated using a recently proposed method based on joint direction of arrival (DOA) and range estimation. The TDOAs are used to estimate the location...... of an acoustic source using a recently proposed method, based on a 4D parameter space defined by the 3D location of the source, and the TDOA. The performance of the proposed method for acoustic source localization is compared to generalized cross-correlation with phase transform (GCC-PHAT), and a method based...... on joint DOA and pitch estimation, using synthesized harmonic signals with varying source position. Results show a decrease in the error of the estimated position when joint DOA and range estimation is used for TDOA estimation, compared to the GCC-PHAT and joint DOA and pitch methods....

  8. Thermo-mechanical modeling of continental rift evolution over mantle upwelling in presence of far-field stresses

    Science.gov (United States)

    Koptev, Alexander; Burov, Evgueni; Calais, Eric; Leroy, Sylvie; Gerya, Taras

    2016-04-01

    We conducted fully-coupled high resolution rheologically consistent 3D thermo-mechanical numerical models to investigate the processes of mantle-lithosphere interaction (MLI) in presence of preexisting far-field tectonic stresses. MLI-induced topography exhibits strongly asymmetric small-scale 3D features, such as rifts, flexural flank uplifts and complex faults structures. This suggests a dominant role of continental rheological structure and intra-plate stresses in controlling continental rifting and break-up processes above mantle upwelling while reconciling the passive (far-field tectonic stresses) versus active (plume-activated) rift concepts as our experiments show both processes in action. We tested different experiments by varying two principal controlling parameters: 1) horizontal extension velocity and 2) Moho temperature used as simplified indicator of the thermal and rheological lithosphere layering. An increase in the applied extension expectedly gives less localized deformation at lithospheric scale: the growth of external velocity from 1.5 mm/years to 6 mm/years leads to enlargement of the rift zones from 75-175 km to 150-425 km width. On the contrary, increasing of the lithospheric geotherm has an opposite effect leading to narrowing of the rift zone: the change of the Moho isotherm from 600°C to 800°C causes diminution of the rift width from 175-425 km to 75-150 km. Some of these finding are contra-intuitive in terms of usual assumptions. The models refer to strongly non-linear impact of far-field extension rates on timing of break-up processes. Experiments with relatively fast far-field extension (6 mm/years) show intensive normal fault localization in crust and uppermost mantle above the plume head at 15-20 Myrs after the onset of the experiment. When plume head material reaches the bottom of the continental crust (at 25 Myrs), the latter is rapidly ruptured (<1 Myrs) and several steady oceanic floor spreading centers develop. Slower (3 mm

  9. Producing any desired far-field mean irradiance pattern using a partially-coherent Schell-model source

    International Nuclear Information System (INIS)

    A new technique is presented to produce any desired mean far-field irradiance pattern using a partially-coherent Schell-model source. The new method differs from similar approaches in the literature by requiring only phase control. This permits the proposed approach to be easily implemented in the laboratory using a single spatial light modulator. The analytical development of the phase-only method is presented and discussed. Simulation and experimental results are presented to validate the proposed method. Applications for the new technique include free-space optical communications, material processing/manufacture, and particle trapping. (paper)

  10. Study of the surface and far fields of terahertz radiation generated by large-aperture photoconductive antennas

    Institute of Scientific and Technical Information of China (English)

    Zhang Tong-Yi; Cao Jun-Cheng

    2004-01-01

    We have studied analytically the temporal characteristics of terahertz radiation emitted from a biased largeaperture photoconductive antenna triggered by an ultrashort optical pulse. We have included the effects of the finite lifetime and transient mobility dynamics of photogenerated carriers in the analysis. Succinct explicit expressions are obtained for the emitted radiation in the surface field and in the far field. The dependence of the waveforms of the radiated field on the fluence and duration of triggering optical pulse, carrier relaxation time and carrier lifetime are discussed in detail using the obtained expressions.

  11. Benchmark Modeling of the Near-Field and Far-Field Wave Effects of Wave Energy Arrays

    Energy Technology Data Exchange (ETDEWEB)

    Rhinefrank, Kenneth E; Haller, Merrick C; Ozkan-Haller, H Tuba

    2013-01-26

    This project is an industry-led partnership between Columbia Power Technologies and Oregon State University that will perform benchmark laboratory experiments and numerical modeling of the near-field and far-field impacts of wave scattering from an array of wave energy devices. These benchmark experimental observations will help to fill a gaping hole in our present knowledge of the near-field effects of multiple, floating wave energy converters and are a critical requirement for estimating the potential far-field environmental effects of wave energy arrays. The experiments will be performed at the Hinsdale Wave Research Laboratory (Oregon State University) and will utilize an array of newly developed Buoys' that are realistic, lab-scale floating power converters. The array of Buoys will be subjected to realistic, directional wave forcing (1:33 scale) that will approximate the expected conditions (waves and water depths) to be found off the Central Oregon Coast. Experimental observations will include comprehensive in-situ wave and current measurements as well as a suite of novel optical measurements. These new optical capabilities will include imaging of the 3D wave scattering using a binocular stereo camera system, as well as 3D device motion tracking using a newly acquired LED system. These observing systems will capture the 3D motion history of individual Buoys as well as resolve the 3D scattered wave field; thus resolving the constructive and destructive wave interference patterns produced by the array at high resolution. These data combined with the device motion tracking will provide necessary information for array design in order to balance array performance with the mitigation of far-field impacts. As a benchmark data set, these data will be an important resource for testing of models for wave/buoy interactions, buoy performance, and far-field effects on wave and current patterns due to the presence of arrays. Under the proposed project we will initiate

  12. Towards an optical far-field measurement of higher-order multipole contributions to the scattering response of nanoparticles

    CERN Document Server

    Bauer, Thomas; Leuchs, Gerd; Banzer, Peter

    2014-01-01

    We experimentally show an all-optical multipolar decomposition of the lowest-order Eigenmodes of a single gold nanoprism using azimuthally and radially polarized cylindrical vector beams. By scanning the particle through these tailored field distributions, the multipolar character of the Eigenmodes gets encoded into 2D-scanning intensity maps even for higher-order contributions to the Eigenmode that are too weak to be discerned in the direct far-field scattering response. This method enables a detailed optical mode analysis of individual nanoparticles.

  13. Towards an optical far-field measurement of higher-order multipole contributions to the scattering response of nanoparticles

    Energy Technology Data Exchange (ETDEWEB)

    Bauer, Thomas; Orlov, Sergej [Max Planck Institute for the Science of Light, Guenther-Scharowsky-Str. 1/Bldg. 24, 91058 Erlangen (Germany); Institute of Optics, Information and Photonics, University Erlangen-Nuremberg, Staudtstr. 7/B2, 91058 Erlangen (Germany); Leuchs, Gerd; Banzer, Peter, E-mail: peter.banzer@mpl.mpg.de [Max Planck Institute for the Science of Light, Guenther-Scharowsky-Str. 1/Bldg. 24, 91058 Erlangen (Germany); Institute of Optics, Information and Photonics, University Erlangen-Nuremberg, Staudtstr. 7/B2, 91058 Erlangen (Germany); Department of Physics, University of Ottawa, 25 Templeton St., Ottawa, Ontario K1N 6N5 (Canada)

    2015-03-02

    We experimentally show an all-optical multipolar decomposition of the lowest-order eigenmodes of a single gold nanoprism using azimuthally and radially polarized cylindrical vector beams. By scanning the particle through these tailored field distributions, the multipolar character of the eigenmodes gets encoded into 2D-scanning intensity maps even for higher-order contributions to the eigenmode that are too weak to be discerned in the direct far-field scattering response. This method enables a detailed optical mode analysis of individual nanoparticles.

  14. Benchmark Modeling of the Near-Field and Far-Field Wave Effects of Wave Energy Arrays

    Energy Technology Data Exchange (ETDEWEB)

    Rhinefrank, Kenneth E.; Haller, Merrick C.; Ozkan-Haller, H. Tuba

    2013-01-26

    This project is an industry-led partnership between Columbia Power Technologies and Oregon State University that will perform benchmark laboratory experiments and numerical modeling of the near-field and far-field impacts of wave scattering from an array of wave energy devices. These benchmark experimental observations will help to fill a gaping hole in our present knowledge of the near-field effects of multiple, floating wave energy converters and are a critical requirement for estimating the potential far-field environmental effects of wave energy arrays. The experiments will be performed at the Hinsdale Wave Research Laboratory (Oregon State University) and will utilize an array of newly developed Buoys that are realistic, lab-scale floating power converters. The array of Buoys will be subjected to realistic, directional wave forcing (1:33 scale) that will approximate the expected conditions (waves and water depths) to be found off the Central Oregon Coast. Experimental observations will include comprehensive in-situ wave and current measurements as well as a suite of novel optical measurements. These new optical capabilities will include imaging of the 3D wave scattering using a binocular stereo camera system, as well as 3D device motion tracking using a newly acquired LED system. These observing systems will capture the 3D motion history of individual Buoys as well as resolve the 3D scattered wave field; thus resolving the constructive and destructive wave interference patterns produced by the array at high resolution. These data combined with the device motion tracking will provide necessary information for array design in order to balance array performance with the mitigation of far-field impacts. As a benchmark data set, these data will be an important resource for testing of models for wave/buoy interactions, buoy performance, and far-field effects on wave and current patterns due to the presence of arrays. Under the

  15. Influence of the probe-sample interaction on scanning near-field optical microscopic images in the far field

    Institute of Scientific and Technical Information of China (English)

    Li Zhi; Zhang Jia-Sen; Yang Jing; Gong Qi-Huang

    2006-01-01

    We have studied the influence of probe-sample interaction in a scanning near-field optical microscopy (SNOM) in the far field by using samples with a step structure. For a sample with a step height of ~λ/4, the SNOM image contrast between the two sides of the step changes periodically at different scan heights. For a step height of ~λ/2, the image contrast remains approximately the same. The probe-sample interaction determines the SNOM image contrast here. The influence of different refractive indices of the sample has been also analysed by using a simple theoretical model.

  16. Demonstration of a white beam far-field neutron interferometer for spatially resolved small angle neutron scattering

    CERN Document Server

    Hussey, Daniel S; Yuan, Guangcui; Pushin, Dmitry; Sarenac, Dusan; Huber, Michael G; Jacobson, David L; LaManna, Jacob M; Wen, Han

    2016-01-01

    We provide the first demonstration that a neutron far-field interferometer can be employed to measure the microstructure of a sample. The interferometer is based on the moir\\'e pattern of two phase modulating gratings which was previously realized in hard x-ray and visible light experiments. The autocorrelation length of this interferometer, and hence the microstructure length scale that is probed, is proportional to the grating spacing and the neutron wavelength, and can be varied over several orders of magnitude for one pair of gratings. We compare our measurements of the change in visibility from monodisperse samples with calculations which show reasonable agreement. The potential advantages of a far-field neutron interferometer include high fringe visibility in a polychromatic beam (over 30 %), no requirement for an absorbing grating to resolve the interference fringes, and the ability to measure the microstructure in the length scale range of 100 nm to 10 \\mum by varying either the grating spacing or neu...

  17. A Study of Near to Far Fields of JPL Deep Space Network (DSN) Antennas for RFI Analysis

    Science.gov (United States)

    Jamnejad, Vahraz

    2003-01-01

    This paper addresses the issue of calculating the gain and power distribution of DSN antennas in the Fresnel (middle zone) and Fraunhofer (far zone) as a function of the distance from the DSN antenna and the off-boresight angle. Calculating the near and mid fields of DSN antennas are of interest in the receive mode where the transmitting signals from nearby flying objects such as helicopters and airplanes transmitting in the DSN frequency range, interfere with the operation of sensitive RF receiving system of the DSN antennas, and in the transmit mode where fields from high-powered DSN antennas interfere with receivers on nearby flying objects such as helicopters or other systems. Computing the exact fields of a large DSN antenna is, in general, a very complicated and arduous task. Even far-field calculations, which are less complicated compared to near and mid zone fields, take considerable computer time. These calculations become even more involved and time-consuming in very near field and back field regions. We provide two approaches for addressing the radio frequency interference (RFI) issue. In this paper, actual fields in mid and far zones are calculated using a relatively simple formulation that is accurate enough for the purposes of RFI analysis. In a future paper, we study and develop simple reference models that provide upper limit bounds or envelopes of the far field patterns as a function of the antenna diameter and frequency, which can be used for obtaining the field at any given point in space.

  18. Bridging the terahertz near-field and far-field observations of liquid crystal based metamaterial absorbers

    Science.gov (United States)

    Wang, Lei; Ge, Shijun; Chen, Zhaoxian; Hu, Wei; Lu, Yanqing

    2016-09-01

    Metamaterial-based absorbers play a significant role in applications ranging from energy harvesting and thermal emitters to sensors and imaging devices. The middle dielectric layer of conventional metamaterial absorbers has always been solid. Researchers could not detect the near field distribution in this layer or utilize it effectively. Here, we use anisotropic liquid crystal as the dielectric layer to realize electrically fast tunable terahertz metamaterial absorbers. We demonstrate strong, position-dependent terahertz near-field enhancement with sub-wavelength resolution inside the metamaterial absorber. We measure the terahertz far-field absorption as the driving voltage increases. By combining experimental results with liquid crystal simulations, we verify the near-field distribution in the middle layer indirectly and bridge the near-field and far-field observations. Our work opens new opportunities for creating high-performance, fast, tunable, terahertz metamaterial devices that can be applied in biological imaging and sensing. Project supported by the National Basic Research Program of China (Grant No. 2012CB921803), the National Natural Science Foundation of China (Grants Nos. 61225026, 61490714, 11304151, and 61435008), the Natural Science Foundation of Jiangsu Province, China (Grant Nos. BK20150845 and 15KJB140004), the Open Foundation Project of National Laboratory of Solid State Microstructures, China (Grant No. M28003), and the Research Center of Optical Communications Engineering & Technology, Jiangsu Province, China.

  19. The emergence of seismic cycles from stress feedback between intra-plate faulting and far-field tectonic loading

    Science.gov (United States)

    So, Byung-Dal; Capitanio, Fabio A.

    2016-08-01

    Using numerical modeling we show the emergence of cyclic slip behavior of faults from stress feedback through an idealized fault, its surrounding plates and far-field tectonic stress. The tectonic stress is exerted on the fault through a force applied along an idealized plate margin, acting on the fault, resulting from the interactions of viscous embedding and external plates. We find that, in such coupled system, the interaction of plates results into feedback with periodic deformation, slip along the fault and episodic plate margin motions. The viscosity of the embedding and loading plates primarily control the stress-loading time and hence the slip recurrence interval. For an Earth-like range of lithospheric viscosities, we derive a power-law with negative exponent, -0.99 to -0.5, scaling the recurrence period with loading-rate, providing an explanation for the observables from paleoseismology and geodesy. The feedback between single fault and far-field stress that arises from interactions of deforming plates provides a context to understand the earthquake cycle within continents, while reconciling the short-term seismic deformation to the long-term plate tectonics frame.

  20. Far field optical nanoscopy: How far can you go in nanometric characterization without resolving all the details?

    Energy Technology Data Exchange (ETDEWEB)

    Montgomery, Paul C., E-mail: paul.montgomery@unistra.fr [Laboratoire des Sciences de l’Ingénieur, de l’Informatique et de l’Imagerie (ICube), UDS-CNRS, UMR 7367, 23 rue du Loess, 67037 Strasbourg (France); Serio, Bruno; Anstotz, Freddy; Montaner, Denis [Laboratoire des Sciences de l’Ingénieur, de l’Informatique et de l’Imagerie (ICube), UDS-CNRS, UMR 7367, 23 rue du Loess, 67037 Strasbourg (France)

    2013-09-15

    In the development of nanomaterials and biomaterials, new characterization techniques are required that overcome the challenges presented by the increasing dimensional ratio between the different entities to be studied and the growing complexity introduced by the use of heterogeneous materials and technologies. Diffraction limited far field optical nanoscopy techniques are receiving growing interest because of their ability to detect nanometer structures over very large fields and at high speed. We present a classification scheme of the different types of optical nanoscopy techniques. In particular, we highlight four categories of far field diffraction limited techniques based on increasing the contrast, measuring the phase, using deconvolution and using nano-markers. We demonstrate that by increasing the power of detectability, observability or measurability, a wealth of information concerning nanometric structures becomes available even though all the lateral details may not be resolved. For example, it is possible to determine the presence, the structure and orientation of nanostructures, to measure their density, position and 2D and 3D distribution and to measure nanometric surface roughness in bulk materials, surfaces, nano-layers, soft matter and cells. These techniques conserve all the advantages associated with classical imaging such as real time imaging, non-invasiveness, non-destructiveness and ease of use.

  1. Simulation of Far-Field Superresolution Fluorescence Imaging with Two-Color One-Photon Excitation of Reversible Photoactivatable Protein

    Institute of Scientific and Technical Information of China (English)

    WANG Chen; QIAO Ling-Ling; MAO Zheng-Le

    2011-01-01

    We propose to achieve far-field super-resolution imaging by using offset two-color one-photon (2C1P) excitation of reversible photoactivatable fluorescence proteins. Due to the distinctive photoswitching performance of the proteins, such as dronpa, the fluorescence emission will only come from the overlapped region of activation beam and excitation beam. The analysis solution of rate equation shows that the resolution of offset 2C1P microscope is "engineered" by laser power of excitation and activation beams and the power ratio between them. Superior lateral and transverse resolution is theoretically demonstrated compared with conventional fluorescence scanning microscopy.%@@ We propose to achieve far-field super-resolution imaging by using offset two-color one-photon(2C1P) excitation of reversible photoactivatable fluorescence proteins.Due to the distinctive photoswitching performance of the proteins,such as dronpa,the fluorescence emission will only come from the overlapped region of activation beam and excitation beam.The analysis solution of rate equation shows that the resolution of offset 2C1P microscope is "engineered" by laser power of excitation and activation beams and the power ratio between them.Superior lateral and transverse resolution is theoretically demonstrated compared with conventional fluorescence scanning microscopy.

  2. Temperature distribution in front of the liquid-solid interface in the undercooled pure melt influenced by a transverse far field flow

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    The directional solidification in the undercooled pure melt influenced by a transverse far field flow was studied by using the multiple scale method. The result shows that in the boundary layer near the liquid-solid interface, when affected by a transverse far field flow, the temperature distribution in the direction of crystal growth presents an oscillatory and decay front in the side of liquid phase. The crucial distinguishing feature of a temperature pattern due to the transverse convection is the additional periodic modulation of the pattern in the growth direction. The wave number and eigenvalue that satisfy the Mullins-Sekerka dispersion relation are suppressed by the transverse far field flow.

  3. The steady-state solution of dendritic growth from the undercooled binary alloy melt with the far field flow

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    The steady-state dendritic growth from the undercooled binary alloy melt with the far field flow is considered. By neglecting the interface energy, interface kinetics and buoyancy effects in the system, we obtaine the steady-state solution for the case of the large Schmidt number, in terms of the multiple variable expansion method. The changes of the temperature and concentration fields, the morphology of the interface, the normalization parameter and the Peclet number of the system induced by uniform external flow are derived. The results show that, compared with the system of dendritic growth from undercooled pure melt, the convective flow in the system of growth from undercooled binary alloy has stronger effects on the morphology of the interface. Nevertheless, the shape of the interface still remains nearly a paraboloid.

  4. Far-field linear optical superresolution via heterodyne detection in a higher-order local oscillator mode

    CERN Document Server

    Yang, Fan; Moiseev, E S; Simon, Christoph; Lvovsky, A I

    2016-01-01

    The Rayleigh limit has so far applied to all microscopy techniques that rely on linear optical interaction and detection in the far field. Here we demonstrate that detecting the light emitted by an object in higher-order transverse electromagnetic modes (TEMs) can help achieving sub-Rayleigh precision for a variety of microscopy-related tasks. Using optical heterodyne detection in TEM01, we measure the position of coherently and incoherently emitting objects to within 0.0015 and 0.012 of the Rayleigh limit, respectively, and determine the distance between two incoherently emitting slits positioned within 0.28 of the Rayleigh limit with a precision of 0.019 of the Rayleigh limit. Extending our technique to higher-order TEMs enables full imaging with resolution significantly below the Rayleigh limit in a way that is reminiscent of quantum tomography of optical states.

  5. Apparatus comprising a tunable nanomechanical near-field grating and method for controlling far-field emission

    Science.gov (United States)

    Carr, Dustin Wade; Bogart, Gregory Robert

    2007-02-06

    A tunable nanomechanical near-field grating is disclosed which is capable of varying the intensity of a diffraction mode of an optical output signal. The tunable nanomechanical near-field grating includes two sub-gratings each having line-elements with width and thickness less than the operating wavelength of light with which the grating interacts. Lateral apertures in the two sub-gratings are formed from the space between one line-element of the first sub-grating and at least one line-element of the second sub-grating. One of the sub-gratings is capable of motion such that at least one of aperture width and aperture depth changes, causing a perturbation to the near-field intensity distribution of the tunable nanomechanical near-field grating and a corresponding change to the far-field emission of thereof.

  6. Testing the near field/far field model performance for prediction of particulate matter emissions in a paint factory

    DEFF Research Database (Denmark)

    Koivisto, A.J.; Jensen, A.C.Ø.; Levin, Marcus;

    2015-01-01

    A Near Field/Far Field (NF/FF) model is a well-accepted tool for precautionary exposure assessment but its capability to estimate particulate matter (PM) concentrations is not well studied. The main concern is related to emission source characterization which is not as well defined for PM emitters...... compared to e.g. for solvents. One way to characterize PM emission source strength is by using the material dustiness index which is scaled to correspond to industrial use by using modifying factors, such as handling energy factors. In this study we investigate how well the NF/FF model predicts PM...... were adjusted to be similar to the measured concentration levels by adjusting the handling energy factor. The handling energy factors were found to vary considerably depending on the material and process even-though they have the same values as modifying factors in the exposure models. This suggests...

  7. System studies in PA: Development of process influence diagram (PID) for SFR-1 repository near-field + far-field

    International Nuclear Information System (INIS)

    Scenario development is a key component of the performance assessment (PA) process for radioactive waste disposal, the primary objective being to ensure that all relevant factors associated with the future evolution of the repository system are properly considered in PA. As part of scenario development, a list of features, events and processes (FEPs) are identified and assembled, representing the Process System, with interactions/influences between FEPs incorporated in a Process Influence Diagram (PID). This report documents the technical work conducted between 1997 and the end of 1999 under the Systems Studies Project. The overall objective of this project has been the construction of a PID for the SFR-1 repository (final repository for reactor waste), this PID being the first stage in the identification of scenarios to describe future evolution of this repository. The PIDs discussed in this report have been created using two software applications: existing commercial software (Business Modeller, Infotool AB. Stockholm, Sweden) and, more recently, a newly developed software tool SPARTA (Enviros QuantiSci, Henley, U.K.). Although the focus of this report is on the application of SPARTA to PID development, it is important to document the work carried out prior to SPARTA being available, in order to provide a complete record of the entire SFR-1 PID development effort as well as preserving the context of the multi-year project. Following a description of the different disposal sections of the SFR-1 and the various near-field barriers, the sequential development (i.e. near-field of Silo, BMA, BLA, BTF sections; far-field; integrated near-field + far-field) of the PID for SFR-1 repository system using Business Modeller is described. Owing to the complexity of the repository, in terms of number of both different disposal sections (Silo, BLA, BMA, BTF) and barriers associated with each section, the two-dimensional (2D) PID created for SFR-1 using Business Modeller is

  8. The steady-state solution of dendritic growth from the undercooled binary alloy melt with the far field flow

    Institute of Scientific and Technical Information of China (English)

    CHEN MingWen; WANG ZiDong; XU JianJun

    2009-01-01

    The steady-state dendritic growth from the undercooled binary alloy melt with the far field flow is considered.By neglecting the interface energy,interface kinetics and buoyancy effects in the system,we obtaine the steady-state solution for the case of the large Schmidt number,in terms of the multiple variable expansion method.The changes of thtemperature and concentration fields,the morphology of the interface,the normalization parameter and the Peclet number of the system induced by uniform external flow are derived.The results show that,compared with the system of dendritic growth from undercooled pure melt,the convective flow in the system of growth from undercooled binary alloy has stronger effects on the morphology of the interface.Nevertheless,the shape of the interface still remains nearly a paraboloid.

  9. Far-field infrared super-resolution microscopy using picosecond time-resolved transient fluorescence detected IR spectroscopy

    Science.gov (United States)

    Sakai, Makoto; Kawashima, Yasutake; Takeda, Akihiro; Ohmori, Tsutomu; Fujii, Masaaki

    2007-05-01

    A new far-field infrared super-resolution microscopy combining laser fluorescence microscope and picosecond time-resolved transient fluorescence detected IR (TFD-IR) spectroscopy is proposed. TFD-IR spectroscopy is a kind of IR-visible/UV double resonance spectroscopy, and detects IR transitions by the transient fluorescence due to electronic transition originating from vibrationally excited level populated by IR light. IR images of rhodamine-6G solution and of fluorescent beads were clearly observed by monitoring the transient fluorescence. Super-resolution twice higher than the diffraction limit for IR light was achieved. The IR spectrum due to the transient fluorescence was also measured from spatial domains smaller than the diffraction limit.

  10. Approach to tune near- and far-field properties of hybrid dimer nanoantennas via laser melting at the nanoscale

    CERN Document Server

    Sun, Yali; Zuev, Dmitry; Huang, Lirong; Krasnok, Alexander; Belov, Pavel

    2016-01-01

    Asymmetric metal-dielectric nanostructures are demonstrated superior optical properties arise from the combination of strong enhancement of their near fields and controllable scattering characteristics which originate from plasmonic and high-index dielectric components. Here, being inspired by the recent experimental work [Dmitry~Zuev, \\textit{et al.}, Adv. Mater. \\textbf{28}, 3087 (2016)] on a new technique for fabrication of asymmetric hybrid nanoparticles via femtosecond laser melting at the nanoscale, we suggest and study numerically a novel type of hybrid dimer nanoantennas. The nanoantennas consist of asymmetric metal-dielectric (Au/Si) nanoparticles and can allow tuning of the near- and far-field properties via laser melting of the metal part. We demonstrate a modification of scattering properties, near electric field distribution, normalized local density of states, and power patters of radiation of the nanoantennas upon laser reshaping. The parameters used to investigate these effects correspond to e...

  11. System studies in PA: Development of process influence diagram (PID) for SFR-1 repository near-field + far-field

    Energy Technology Data Exchange (ETDEWEB)

    Stenhouse, M.J. [Monitor Scientific, LLC, Denver, CO (United States); Miller, W.M.; Chapman, N.A. [QuantiSci Ltd., Melton Mowbray (United Kingdom)

    2001-05-01

    Scenario development is a key component of the performance assessment (PA) process for radioactive waste disposal, the primary objective being to ensure that all relevant factors associated with the future evolution of the repository system are properly considered in PA. As part of scenario development, a list of features, events and processes (FEPs) are identified and assembled, representing the Process System, with interactions/influences between FEPs incorporated in a Process Influence Diagram (PID). This report documents the technical work conducted between 1997 and the end of 1999 under the Systems Studies Project. The overall objective of this project has been the construction of a PID for the SFR-1 repository (final repository for reactor waste), this PID being the first stage in the identification of scenarios to describe future evolution of this repository. The PIDs discussed in this report have been created using two software applications: existing commercial software (Business Modeller, Infotool AB. Stockholm, Sweden) and, more recently, a newly developed software tool SPARTA (Enviros QuantiSci, Henley, U.K.). Although the focus of this report is on the application of SPARTA to PID development, it is important to document the work carried out prior to SPARTA being available, in order to provide a complete record of the entire SFR-1 PID development effort as well as preserving the context of the multi-year project. Following a description of the different disposal sections of the SFR-1 and the various near-field barriers, the sequential development (i.e. near-field of Silo, BMA, BLA, BTF sections; far-field; integrated near-field + far-field) of the PID for SFR-1 repository system using Business Modeller is described. Owing to the complexity of the repository, in terms of number of both different disposal sections (Silo, BLA, BMA, BTF) and barriers associated with each section, the two-dimensional (2D) PID created for SFR-1 using Business Modeller is

  12. Near-field and far-field effects of elastic structure on coseismic deformation of the 2011 Tohoku earthquake, Japan

    Science.gov (United States)

    Hashima, Akinori; Becker, Thorsten; Freed, Andy; Sato, Hiroshi; Okaya, David; Suito, Hisashi; Yarai, Hiroshi; Ishiyama, Tatsuya; Iwasaki, Takaya

    2016-04-01

    Coseismic deformation due to the 2011 Tohoku earthquake, Japan, was detected by dense GPS network of over 1200 stations and several seafloor stations. Using these observations, we investigated effects of elastic structure on coseismic deformation with a 3-D finite element model incorporating geometry of the regional plate boundaries and elastic structures. First, we computed displacement fields for different elastic models with the same coseismic slip distribution to understand the effect of elastic structures. We assumed the three structure models: (a) Homogeneous model, (b) two-layered model considering crust-mantle structure (rigidity of 35 and 65 GPa, respectively) (Layered model), (c) crust-mantle model with cold subducting slab (85 GPa) (Slab model). We found the two contradicting effects: (1) In the far field (mostly at onshore stations), the amount of displacement decreases with the increase of the average rigidity. (2) In the near field at offshore stations, the amount of surface displacement increases with the increase of rigidity across the faults. This is because the stiffer (less deformable) footwall requires more movement of the hanging wall to accommodate the slip. Next, we inverted the observed displacements to obtain slip distribution for three elastic structures. The patterns of inverted slip distribution are basically similar for all three models but the amount of maximum slip is not simply related to average rigidity of structure models. The maximum slip increases from 39 m in Homogeneous model to 40 m in Layered model and then falls to 38 m in Slab model. These changes show that crust-mantle layering is more effective on far field while slab effect is more important in the near field.

  13. Two-dimensional circulation and mixing in the far field of a surface-advected river plume

    Science.gov (United States)

    Mazzini, Piero L. F.; Chant, Robert J.

    2016-06-01

    Field observations of the Hudson River plume are presented to discuss circulation and mixing in the far field of this coastally trapped buoyant flow. The plume was surface advected and propagated downshelf near the internal wave speed. The plume outflow was characterized by a two-layer bulge-like feature but became continuously stratified and vertically sheared in the far field, where Richardson numbers are generally below 0.5. High-frequency velocity and backscatter data from a moored ADCP revealed strong vertical and horizontal oscillatory motions at the front with a wavelength approximately 7-8 times the plume thickness, consistent with Kelvin-Helmholtz instabilities. These motions quickly died out after 2-3 cycles. The combination of vertical shear and stratification in the plume leads to a buoyancy flux toward the nose of the plume, which competes with mixing. However, the continued salinity increase of the plume as it propagated downshelf indicates that mixing overcomes this delivery of freshwater to the plume front. A simple 2-D model is developed, which relates the time rate-of-change of the plume salinity to: (1) salt entrainment due to vertical mixing, and (2) freshwater flux and salt removal due to the vertical shear of the stratified plume. Estimates of an entrainment coefficient from this model are consistent with previous estimates from the near field of a river outflow. A scaling of the plume width is obtained by assuming that vertical shears are controlled by both thermal wind and a critical Richardson number. This scaling yields plume widths that are consistent with previous laboratory studies.

  14. Antenna Gain Far Field Testing and Calibration%天线增益远场测试及标定

    Institute of Scientific and Technical Information of China (English)

    束咸荣; 董玉良; 王华; 郭先松

    2012-01-01

    The modified Friis transmission formula is put forward in this paper. Based on this, the engineering processing formulas on antenna gain 5 far field test methods are obtained. This analysis points out that, antenna gain test by"the comparative law"is no use for think about insertion loss of test cables and calculating distance between transmitting antenna and receiving antenna, thus it is conveniently for apply to engineering. At last the gain theory curves of different 5 pyramidal homs are calculated with 3 methods and advice on standard-gain horn correct design and exact calibration is given.%文中提出了改进的Friis传输公式,据此得到天线增益远场测试5种方法的工程处理公式.分析指出,其中“比较法”测量天线增益不需要考虑测试馈线的插入损耗和提供收、发天线的间距,便于工程应用.最后,以3种方法计算5种规格角锥喇叭增益的理论曲线,给出了标准增益喇叭正确设计和精确标定的建议.

  15. An Analysis of Mechanical Constraints when Using Superconducting Gravimeters for Far-Field Pre-Seismic Anomaly Detection

    Directory of Open Access Journals (Sweden)

    Shyh-Chin Lan

    2011-01-01

    Full Text Available Pre-seismic gravity anomalies from records obtained at a 1 Hz sampling rate from superconducting gravimeters (SG around East Asia are analyzed. A comparison of gravity anomalies to the source parameters of associated earthquakes shows that the detection of pre-seismic gravity anomalies is constrained by several mechanical conditions of the seismic fault plane. The constraints of the far-field pre-seismic gravity amplitude perturbation were examined and the critical spatial relationship between the SG station and the epicenter precursory signal for detection was determined. The results show that: (1 the pre-seismic amplitude perturbation of gravity is inversely proportional to distance; (2 the transfer path from the epicenter to the SG station that crosses a tectonic boundary has a relatively low pre-seismic gravity anomaly amplitude; (3 the pre-seismic gravity perturbation amplitude is also affected by the attitude between the location of an SG station and the strike of the ruptured fault plane. The removal of typhoon effects and the selection of SG stations within a certain intersection angle to the strike of the fault plane are essential for obtaining reliable pre-seismic gravity anomaly results.

  16. Far-field diffraction and focal plane misalignment effects on simulated GIFTS data from the IHOP field program

    Science.gov (United States)

    Olson, Erik R.; Knuteson, Robert O.; Revercomb, Hank E.; Li, Jun; Huang, Hung-Lung A.

    2004-10-01

    The Geosynchronous Imaging Fourier Transform Spectrometer (GIFTS) and the Hyperspectral Environmental Suite (HES) instruments are geostationary infrared spectrometers. Geostationary orbit provides observations with very good time resolution, but also increases the effect of diffraction. There can be significant differences in emitted radiances due to clouds and changes in surface characteristics. High, thick clouds in particular are much cooler than clear areas. Diffraction causes radiation that originates from cloudy areas outside of the detector field of view to contaminate the clear pixels. GIFTS will also have two detector arrays on different focal planes, which may not be perfectly aligned. This can cause spatial misalignment between the data for the two spectral regions. High spatial resolution numerical models run at the University of Wisconsin - Cooperative Institute for Meteorological Satellite Studies (UW-CIMSS) provide data for examining the diffraction and misalignment effects. The model data represents a variable cloud case during the IHOP field experiment at 1.3-km resolution. This paper outlines the production of high spatial resolution simulated data, characterization of the far field diffraction effects on radiances, and analysis of misalignment effects on temperature and moisture profile retrievals.

  17. Functional imaging of a single cell: far-field infrared super-resolution microscopy using autofluorescence detection

    Science.gov (United States)

    Ohmori, Tsutomu; Inoue, Keiichi; Sakai, Makoto; Fujii, Masaaki; Ishihara, Miya; Kikuchi, Makoto

    2009-02-01

    We demonstrated cell imaging without any stain by far-field 2-color infrared (IR) super-resolution microscopy, combining laser fluorescence microscope and picosecond transient fluorescence detected IR (TFD-IR) spectroscopy. TFD-IR spectroscopy detects IR absorption by monitoring fluorescence due to an electronic transition from a vibrational excited level by an additional visible light. By using the IR microscopy based on TFD-IR spectroscopy, the spatial resolution of the image can be increased to the visible diffraction limit of sub-μm, i.e., the IR is super-resolved. Cell auto-fluorescence due to flavin molecules was monitored for label-free detection of the cellular components. The fluorescence image of an A549 cell was obtained by introducing both an IR light at 3300 nm and a visible light at 560 nm. The spatial resolution of the image was estimated to be 1.6 μm. This is about 2.5-times higher resolution than the diffraction limit of IR light. The fluorescence intensity of the images at 3448 nm was smaller than that at 3300 nm, corresponding to the smaller IR absorption. Therefore, IR spectral imaging of a single cell was achieved with superresolution.

  18. USAF bioenvironmental noise data handbook. Volume 172: Hush-noise suppressor (Aero Systems Engineering, Incorporated) far-field noise

    Science.gov (United States)

    Lee, R. A.; Rau, T. H.; Jones, C.

    1982-07-01

    The hush-house noise suppressor was made by Aero Systems Engineering of Texas, Inc. for acoustical suppression of various AF fighter/trainer aircraft during ground runup operations. This report provides measured and extrapolated data defining the bioacoustic environments produced by several aircraft/engines operating in the hush-house suppressor for various engine power configurations. Far-field data measured at 20 locations are normalized to standard meteorological conditions and extrapolated from 75-8000 meters to derive sets of equal-value contours for seven acoustic measures as function of angle and distance from the source. Refer to Volume 1 of this handbook, 'USAF Bioenvironmental Noise Data Handbook, Vol 1: Organization, Content and Application,' AMRL-TR-75(1) 1975, for discussion of the objective and design of the handbook, the types of data presented, measurement procedures, instrumentation, data processing, definitions of quantities, symbols, equations, applications, limitations, etc. Data are presented for the following aircraft/engines operating in the hush-house noise suppressor: F-4, F-15, F-16, F-105, F-106, F-111F and T-38 aircraft and the TF41-A-1, J79-GE-15, F100-PW-100, J75-P19, J-75-P-17 and TF30-P-100 engines.

  19. Theoretical and numerical studies of crack initiation and propagation in rock masses under freezing pressure and far-field stress

    Directory of Open Access Journals (Sweden)

    Yongshui Kang

    2014-10-01

    Full Text Available Water-bearing rocks exposed to freezing temperature can be subjected to freeze–thaw cycles leading to crack initiation and propagation, which are the main causes of frost damage to rocks. Based on the Griffith theory of brittle fracture mechanics, the crack initiation criterion, propagation direction, and crack length under freezing pressure and far-field stress are analyzed. Furthermore, a calculation method is proposed for the stress intensity factor (SIF of the crack tip under non-uniformly distributed freezing pressure. The formulae for the crack/fracture propagation direction and length of the wing crack under freezing pressure are obtained, and the mechanism for coalescence of adjacent cracks is investigated. In addition, the necessary conditions for different coalescence modes of cracks are studied. Using the topology theory, a new algorithm for frost crack propagation is proposed, which has the capability to define the crack growth path and identify and update the cracked elements. A model that incorporates multiple cracks is built by ANSYS and then imported into FLAC3D. The SIFs are then calculated using a FISH procedure, and the growth path of the freezing cracks after several calculation steps is demonstrated using the new algorithm. The proposed method can be applied to rocks containing fillings such as detritus and slurry.

  20. Theoretical and numerical studies of crack initiation and propagation in rock masses under freezing pressure and far-field stress

    Institute of Scientific and Technical Information of China (English)

    Yongshui Kang; Quansheng Liu; Xiaoyan Liu; Shibing Huang

    2014-01-01

    Water-bearing rocks exposed to freezing temperature can be subjected to freezeethaw cycles leading to crack initiation and propagation, which are the main causes of frost damage to rocks. Based on the Griffith theory of brittle fracture mechanics, the crack initiation criterion, propagation direction, and crack length under freezing pressure and far-field stress are analyzed. Furthermore, a calculation method is proposed for the stress intensity factor (SIF) of the crack tip under non-uniformly distributed freezing pressure. The formulae for the crack/fracture propagation direction and length of the wing crack under freezing pressure are obtained, and the mechanism for coalescence of adjacent cracks is investigated. In addition, the necessary conditions for different coalescence modes of cracks are studied. Using the topology theory, a new algorithm for frost crack propagation is proposed, which has the capability to define the crack growth path and identify and update the cracked elements. A model that incorporates multiple cracks is built by ANSYS and then imported into FLAC3D. The SIFs are then calculated using a FISH procedure, and the growth path of the freezing cracks after several calculation steps is demon-strated using the new algorithm. The proposed method can be applied to rocks containing fillings such as detritus and slurry.

  1. Oklo as a natural analogue. Reconstruction of ancient fluid circulations using trace-element geochemistry from near to far field

    International Nuclear Information System (INIS)

    The natural nuclear reactors located in the Oklo uranium ore deposit (Gabon) represent one of the best analogy of what could be the interaction of a site of radioactive wastes storage with geological medium. It is under this view of natural analogue that reaction zones and uranium ore deposit are studied in part of european program coordinated by C.E.A. The aim of the thesis is to characterize the ancient fluid circulation which have induced some elementary redistributions from near field to far field. Tracing fluid phase geochemistry have been made by study of several mineral populations (apatite, zircon, pyrite chalcopyrite). Fluids escaping from reaction zones during their critically have been identified by isotopic and elementary compositions of apatites located in 'argiles de pile'. Geochemical feature of those fluids have not been founded in the bearing sandstones. Although, mineralogical observations, chemical analysis on whole rocks and analysis of trace elements of zircons and apatites allowed to characterize an early hydrothermal stage which predates criticality in reaction zones. At the scale of uranium ore deposit, study of sulfur allowed to identify several hydrothermal stages. All those stages are later with respect to criticality in reaction zones. The principal fluid circulation stage, present both in pyrites and galena is interpreted as a resulting from mixing between a locally induced fluid and a regional circulation. A second stage is certainly later and correspond to a reworking of lead in galena and precipitation of pyrites and chalcopyrites. (author)

  2. Far-field correlation of bidirectional tracking beams due to wave-front deformation in inter-satellites optical communication links.

    Science.gov (United States)

    Yu, Siyuan; Ma, Zhongtian; Ma, Jing; Wu, Feng; Tan, Liying

    2015-03-23

    In some applications of optical communication systems, such as inter-satellites optical communication, the correlation of the bidirectional tracking beams changes in far-field as a result of wave-front deformation. Far-field correlation model with wave-front deformation on tracking stability is established. Far-field correlation function and factor have been obtained. Combining with parameters of typical laser communication systems, the model is corrected. It shows that deformation pointing-tracking errors θ(A) and θ(B), far-field correlation factor δ depend on RMS of deformation error rms, which decline with a increasing rms including Tilt and Coma. The principle of adjusting far-field correlation factor with wave-front deformation to compensate deformation pointing-tracking errors has been given, through which the deformation pointing-tracking error is reduced to 18.12″ (Azimuth) and 17.65″ (Elevation). Work above possesses significant reference value on optimization design in inter-satellites optical communication.

  3. Tsunami risk assessment in the Marquesas Islands (French Polynesia) through numerical modeling of generic far-field events

    Science.gov (United States)

    Hébert, H.; Schindelé, F.; Heinrich, P.

    Earthquakes occurring at the Pacific Rim can trigger tsunamis that propagate across the ocean and can produce significant damages far away from the source. In French Polynesia, the Marquesas Islands are the most exposed to the far-field tsunami hazards, since they are not protected by any outer coral reef and since submarine slopes are less steep than in other islands. Between 1994 and 1996, four tsunamis have reached the bays of the archipelago, among them, the tsunami initiated by the Chilean Mw 8.1 earthquake, produced up to 3 m high waves in Tahauku Bay. Numerical modeling of these recent events has already allowed us to validate our method of resolution of hydrodynamics laws through a finite-difference scheme that simulates the propagation of the tsunamis across the ocean and computes the inundation heights (run-up) in remote bays. We present in this paper the simulations carried out to study potentially threatening areas located at the Pacific Rim, on the seismogenic Aleutian and Tonga subduction zones. We use a constant seismic moment source (that of the Mw 8.1 Chile 1995 earthquake, M0 = 1.2 1021 N.m) located at several potential epicenters, with the fault strike adapted from the regional seismotectonics pattern. Our results show that the sources chosen in the Aleutian trench do not produce large inundations in the Marquesas bays, except for the easternmost source (longitude 194° E). Sources located in the Tonga trench do not produce high amplifications either, except for the northernmost one (latitude 16° S). We also discuss the behaviour of the tsunami waves within the archipelago, and evidence contrasting responses depending on the arrival azimuths. These results show that, for a given initial seismic energy, the tsunami amplification in remote bays is highly dependent on the source location and fault strike.

  4. Numerical analysis on the signal characteristics for scattered far fields of ultrasonic SH-wave by the internal cavity of material

    International Nuclear Information System (INIS)

    In this paper, the SH-wave scattering by the internal cavity using Boundary Element Method is studied. The effects of defect shape on transmitted and reflected fields are considered. The effects of distance between internal cavity and internal point in infinite domain are also investigated. Numerical calculations by the BEM have been carried out to predict the near field and far field solutions of scattered fields of ultrasonic SH-wave. These far field solutions of frequency domain have been transformed into the waveforms of time domain using inverse fast fourier transform. The presented results can be used to improve the detection sensitivity and pursue quantitative nondestructive evaluation for inverse problem.

  5. Far-field coseismic displacements associated with the great Sumatra earthquakes of December 26, 2004 and March 29, 2005 constrained by Global Positioning System

    Institute of Scientific and Technical Information of China (English)

    WANG Min; ZHANG Peizhen; SHEN Zhengkang; LIU Jie; SUN Hanrong; GAN Weijun; LI Peng

    2006-01-01

    Based on continuous GPS observations within China as well as global GPS tracking network,a calculation has been made of far-field coseismic displacements associated with the December, 2004 (Mw= 9.3) and March, 2005 (Mw= 8.7) earthquakes.The far-field coseismic displacements are associated with the 2004 shock range more than 6000-7000 krn in both north-south and east-west dimensions,and depict an undulated wave pattern of contraction and extension. The coseismic displacements associated with the 2005 event, however, are distributed near the epicentral region, and the event itself may be an aftershock of the 2004 earthquake.

  6. J-85 jet engine noise measured in the ONERA S1 wind tunnel and extrapolated to far field

    Science.gov (United States)

    Soderman, Paul T.; Julienne, Alain; Atencio, Adolph, Jr.

    1991-01-01

    Noise from a J-85 turbojet with a conical, convergent nozzle was measured in simulated flight in the ONERA S1 Wind Tunnel. Data are presented for several flight speeds up to 130 m/sec and for radiation angles of 40 to 160 degrees relative to the upstream direction. The jet was operated with subsonic and sonic exhaust speeds. A moving microphone on a 2 m sideline was used to survey the radiated sound field in the acoustically treated, closed test section. The data were extrapolated to a 122 m sideline by means of a multiple-sideline source-location method, which was used to identify the acoustic source regions, directivity patterns, and near field effects. The source-location method is described along with its advantages and disadvantages. Results indicate that the effects of simulated flight on J-85 noise are significant. At the maximum forward speed of 130 m/sec, the peak overall sound levels in the aft quadrant were attentuated approximately 10 dB relative to sound levels of the engine operated statically. As expected, the simulated flight and static data tended to merge in the forward quadrant as the radiation angle approached 40 degrees. There is evidence that internal engine or shock noise was important in the forward quadrant. The data are compared with published predictions for flight effects on pure jet noise and internal engine noise. A new empirical prediction is presented that relates the variation of internally generated engine noise or broadband shock noise to forward speed. Measured near field noise extrapolated to far field agrees reasonably well with data from similar engines tested statically outdoors, in flyover, in a wind tunnel, and on the Bertin Aerotrain. Anomalies in the results for the forward quadrant and for angles above 140 degrees are discussed. The multiple-sideline method proved to be cumbersome in this application, and it did not resolve all of the uncertainties associated with measurements of jet noise close to the jet. The

  7. A Line Integral Representation of the Physical Optics Far Field from Plane PEC Scatterers Illuminated by Electric or Magnetic Hertzian Dipoles

    DEFF Research Database (Denmark)

    Arslanagic, S.; Meincke, Peter; Jørgensen, E.;

    2002-01-01

    We derive a line integral representation of the physical optics (PO) scattered far field that yields the exact same result as the conventional surface radiation integral. This representation applies to a perfectly electrically conducting plane scatterer illuminated by electric or magnetic Hertzian...

  8. A review of sorption of radionuclides under the near- and far-field conditions of an underground radioactive waste repository. Pt. 3

    International Nuclear Information System (INIS)

    This report summarises work funded by the Department of the Environment and UK Nirex Ltd in the area of sorption of radionuclides under the near-field and far-field conditions pertaining to the underground disposal of radioactive waste in the UK that was presented and discussed in Part I. The report also summarises comparable research undertaken overseas (presented in Part II). (author)

  9. On the Seismic Response of Protected and Unprotected Middle-Rise Steel Frames in Far-Field and Near-Field Areas

    Directory of Open Access Journals (Sweden)

    Dora Foti

    2014-01-01

    Full Text Available Several steel moment-resisting framed buildings were seriously damaged during Northridge (1994; Kobe (1995; Kocaeli, Turkey (1999, earthquakes. Indeed, for all these cases, the earthquake source was located under the urban area and most victims were in near-field areas. In fact near-field ground motions show velocity and displacement peaks higher than far-field ones. Therefore, the importance of considering near-field ground motion effects in the seismic design of structures is clear. This study analyzes the seismic response of five-story steel moment-resisting frames subjected to Loma Prieta (1989 earthquake—Gilroy (far-field register and Santa Cruz (near-field register. The design of the frames verifies all the resistance and stability Eurocodes’ requirements and the first mode has been determined from previous shaking-table tests. In the frames two diagonal braces are installed in different positions. Therefore, ten cases with different periods are considered. Also, friction dampers are installed in substitution of the braces. The behaviour of the braced models under the far-field and the near-field records is analysed. The responses of the aforementioned frames equipped with friction dampers and subjected to the same ground motions are discussed. The maximum response of the examined model structures with and without passive dampers is analysed in terms of damage indices, acceleration amplification, base shear, and interstory drifts.

  10. The stratigraphic imprint of a mid-Telychian (Llandovery, Early Silurian glaciation on far-field shallow-water carbonates, Anticosti Island, Eastern Canada

    Directory of Open Access Journals (Sweden)

    François Clayer

    2014-12-01

    Full Text Available The near-field stratigraphic record of the Early Silurian glaciations is well documented in the literature. Data from far-field areas are, however, sparse. One of the best far-field stratigraphic records of these Llandovery glaciations is exposed on Anticosti Island in eastern Canada. Eight shallow-water paleotropical facies are present close to the mid-Telychian Jupiter–Chicotte formational boundary along the south-central coast of Anticosti Island. These can be grouped into three facies associations that include, from bottom to top: a carbonate facies association (FA-1, a mixed siliciclastic and carbonate facies association (FA-2 and an encrinitic facies association (FA-3. These mid- to outer-ramp strata represent deposition mostly from episodic, high-energy storm events as evidenced by their sharp bases, hummocky cross-stratification, large wave ripples, gutter casts and wave-enhanced sediment gravity flow deposits. Superimposed on a long-term regressive trend, one main transgressive–regressive (TR sequence and four meter-scale TR cycles are evident, indicating a multi-order stratigraphic framework developed under the influence of glacio-eustasy. The Jupiter–Chicotte formational boundary, a regional discontinuity surface caused by a forced regression, corresponds to the onset of a far-field mid-Telychian glaciation.

  11. Simultaneous measurement of patterns in the signal and idler near and far fields from a confocal optical parametrical oscillator with applications in quantum optics

    DEFF Research Database (Denmark)

    Lassen, Mikael Østergaard; Tidemand-Lichtenberg, Peter; Buchhave, Preben

    2005-01-01

    We present the results of an experimental investigation of multimode intensity patterns from an optical parametric oscillator operating above threshold and show that it oscillates in 10-15 transverse modes strongly coupled through the nonlinear crystal, which makes this setup useful for future...... investigation of quantum correlations in the transverse plane. We describe the experimental setup for simultaneous measurements of signal and idler near- and far-field patterns and analyze the effects of various experimental complications such as walk-off and thermal index changes on the generated patterns. We...... also show that the oscillator can be stabilized by optical feedback, indicating a possible route for controlling the generated intensity patterns....

  12. A review of sorption of radionuclides under the near- and far-field conditions of an underground radioactive waste repository. Pt. 2

    International Nuclear Information System (INIS)

    This report, a bibliography, has been prepared, presenting work carried out world-wide since 1970 on the sorption of radionuclides under near- and far-field conditions. Work has been included where the results are relevant to the disposal of low- and intermediate-level radioactive waste in a cementitious repository in the UK. The bibliography has been prepared using the INIS database and includes eight hundred references, listed both by subject and by country. In addition to these indexes, full abstracts are presented in reverse chronological order. A brief description of the relevance and measurement of sorption parameters is included. (author)

  13. Breakdown of doublet recirculation and direct line drives by far-field flow in reservoirs: implications for geothermal and hydrocarbon well placement

    Science.gov (United States)

    Weijermars, R.; van Harmelen, A.

    2016-07-01

    An important real world application of doublet flow occurs in well design of both geothermal and hydrocarbon reservoirs. A guiding principle for fluid management of injection and extraction wells is that mass balance is commonly assumed between the injected and produced fluid. Because the doublets are considered closed loops, the injection fluid is assumed to eventually reach the producer well and all the produced fluid ideally comes from stream tubes connected to the injector of the well pair making up the doublet. We show that when an aquifer background flow occurs, doublets will rarely retain closed loops of fluid recirculation. When the far-field flow rate increases relative to the doublet's strength, the area occupied by the doublet will diminish and eventually vanishes. Alternatively, rather than using a single injector (source) and single producer (sink), a linear array of multiple injectors separated by some distance from a parallel array of producers can be used in geothermal energy projects as well as in waterflooding of hydrocarbon reservoirs. Fluid flow in such an arrangement of parallel source-sink arrays is shown to be macroscopically equivalent to that of a line doublet. Again, any far-field flow that is strong enough will breach through the line doublet, which then splits into two vortices. Apart from fundamental insight into elementary flow dynamics, our new results provide practical clues that may contribute to improve the planning and design of doublets and direct line drives commonly used for flow management of groundwater, geothermal and hydrocarbon reservoirs.

  14. Breakdown of doublet re-circulation and direct line drives by far-field flow in reservoirs: Implications for geothermal and hydrocarbon well placement

    Science.gov (United States)

    Weijermars, R.; van Harmelen, A.

    2016-04-01

    An important real world application of doublet flow occurs in well design of both geothermal and hydrocarbon reservoirs. A guiding principle for fluid management of injection and extraction wells is that mass balance is commonly assumed between the injected and produced fluid. Because the doublets are considered closed loops, the injection fluid is assumed to eventually reach the producer well and all the produced fluid ideally comes from stream tubes connected to the injector of the well pair making up the doublet. We show that when an aquifer background flow occurs, doublets will rarely retain closed loops of fluid re-circulation. When the far-field flow rate increases relative to the doublet's strength, the area occupied by the doublet will diminish and eventually vanishes. Alternatively, rather than using a single injector (source) and single producer (sink), a linear array of multiple injectors separated by some distance from a parallel array of producers can be used in geothermal energy projects as well as in waterflooding of hydrocarbon reservoirs. Fluid flow in such an arrangement of parallel source-sink arrays is shown to be macroscopically equivalent to that of a line doublet. Again, any far-field flow that is strong enough will breach through the line doublet, which then splits into two vortices. Apart from fundamental insight into elementary flow dynamics, our new results provide practical clues that may contribute to improve the planning and design of doublets and direct line drives commonly used for flow management of groundwater, geothermal and hydrocarbon reservoirs.

  15. A review of sorption of radionuclides under the near- and far-field conditions of an underground radioactive waste repository. Pt. 1

    International Nuclear Information System (INIS)

    This report presents and discusses work funded by the Department of the Environment and UK Nirex Ltd in the area of sorption of radionuclides under near-field and far-field conditions as related to the underground disposal of radioactive waste in the UK. It is intended as a basis for comparison with work undertaken world-wide in the sorption area, presented in Part II of this review. The UK and overseas work are compared in Part III. From lists of reports and papers supplied by DOE (HMIP) and Nirex, those publications believed to be relevant were selected and are listed here by subject. Summaries of all these reports are included in the form of abstracts, or where available, executive summaries. The work presented is further summarised and discussed. Sections on sorption and laboratory experimental methods are included, along with a section on the level of understanding and outstanding issues. (Author)

  16. Combining near-field hyperspectral imaging and far-field spectral-angular distribution to develop mid-field white LED optical models with spatial color deviation.

    Science.gov (United States)

    Lee, Tsung-Xian; Lu, Tsung-Lin; Chen, Bo-Song

    2016-07-11

    The integration of spatial distribution of light intensity and color in the midfield is instrumental for LED optical design. On the basis of this rationale, we proposed an accurate and convenient method for developing white LED optical models. Near-field hyperspectral images and far-field spectral-angular distributions were integrated to illustrate changes in spatial light intensity and color distribution in the mid-field, to the exclusion of the absorption, conversion, and scattering of phosphors. The corresponding optical models were developed for three LED samples under different packaging conditions. Their normalized cross-correlation values for spatial light intensity and correlated-color-temperature distribution between simulation and measurement averaged as high as 0.995 and 0.99 respectively, which validated the accuracy and feasibility of the proposed method. PMID:27410897

  17. Time-dependent wellbore breakout growth caused by drilling-induced pore pressure transients: Implications for estimations of far field stress magnitude

    Science.gov (United States)

    Olcott, K. A.; Saffer, D. M.; Elsworth, D.

    2013-12-01

    One method used to constrain principal stress orientations and magnitudes in the crust combines estimates of rock strength with observations of wellbore failures, including drilling-induced tensile fractures (DITF) and compressional borehole breakouts (BO). This method has been applied at numerous Integrated Ocean Drilling Program (IODP) boreholes drilled into sediments in a wide range of settings, including the Gulf of Mexico, the N. Japan and Costa Rican subduction margins, and the Nankai Trough Accretionary Prism. At Nankai and N. Japan, BO widths defined by logging-while-drilling (LWD) resistivity images have been used to estimate magnitudes of far-field horizontal tectonic stresses. At several drillsites (C0010, C0002, and C0011), sections of the borehole were relogged with LWD after the hole was left open for times ranging from ~30 min to 3 days; times between acquisition were associated with pipe connections (~30 min), cleaning and circulating the hole (up to ~3 hr), and evacuation of the site for weather (~3 days). Relogged portions exhibit widening of BO, hypothesized to reflect time-dependent re-equilibration of instantaneous changes in pore fluid pressure (Pf) induced by opening the borehole. In this conceptual model, Pf decrease caused by initial excavation of the borehole and resulting changes in the state of stress at the borehole wall lead to an initial strengthening of the sediment. Re-equilibration of Pf results in time-dependent weakening of the sediment and subsequent BO growth. If correct, this hypothesis implies that stress magnitudes estimated by BO widths could be significantly underestimated. We test this idea using a finite-element model in COMSOL multiphysics that couples fluid flow and deformation in a poroelastic medium. We specify far-field horizontal principal stresses (SHmax and Shmin) in the model domain. At the start of simulations/at the time of borehole opening, we impose a decreased stress at the borehole wall. We consider a

  18. Dynamic Interaction Behavior between Jumbo Container Crane and Pile-Supported Wharf under NearField and Far-Field Ground Motions

    Directory of Open Access Journals (Sweden)

    J. R. LI

    2016-02-01

    Full Text Available Playing an important role in local and national seaport activities, container wharves are susceptible to structural failure and damage during earthquake events. Therefore, factors that affect the seismic response of crane–wharf structures under different types of earthquake ground motions should be elucidated. In this paper, 3D finite element models were established to investigate the differences of natural vibration characteristics between the wharf and crane–wharf structures. The dynamic response of a typical pile-supported wharf structure and the interaction behavior of a crane and wharf structural system under seismic actions of near-field and far-field ground motions were studied by performing numerical simulation and time-history response analysis. Axial force–moment relation curves were adopted to analyze the elastic–plastic limit state of the wharf structure under different ground motions. Results showed that the consideration of the container crane increased the natural vibration period of the pile-supported wharf structure and affected the dynamic characteristics of the structure. Compared with the far-field earthquake ground motion, the nearfield earthquake exerted a more significant impact on the structural dynamic response that controlled the elastic–plastic limit state. With the presence of a crane, the moment and shear force of the pile-top decreased and the location of the extreme value moved down obviously. The findings demonstrated that considering the crane changed the failure mechanism of the wharf structure, and the eccentric effect of the crane may amplify the dynamic response as the peak ground acceleration increases. The results provide reference for the seismic design and the evaluation of the seismic response of container wharves.

  19. Far-Field Tsunami Impact in the North Atlantic Basin from Large Scale Flank Collapses of the Cumbre Vieja Volcano, La Palma

    Science.gov (United States)

    Tehranirad, Babak; Harris, Jeffrey C.; Grilli, Annette R.; Grilli, Stephan T.; Abadie, Stéphane; Kirby, James T.; Shi, Fengyan

    2015-12-01

    In their pioneering work, Ward and Day suggested that a large scale flank collapse of the Cumbre Vieja Volcano (CVV) on La Palma (Canary Islands) could trigger a mega-tsunami throughout the North Atlantic Ocean basin, causing major coastal impact in the far-field. While more recent studies indicate that near-field waves from such a collapse would be more moderate than originally predicted by Ward and Day [Løvholt et al. (J Geophy Res 113:C09026, 2008); Abadie et al. (J Geophy Res 117:C05030, 2012)], these would still be formidable and devastate the Canary Island, while causing major impact in the far-field at many locations along the western European, African, and the US east coasts. Abadie et al. (J Geophy Res 117:C05030, 2012) simulated tsunami generation and near-field tsunami impact from a few CVV subaerial slide scenarios, with volumes ranging from 20 to 450 km^3; the latter representing the most extreme scenario proposed by Ward and Day. They modeled tsunami generation, i.e., the tsunami source, using THETIS, a 3D Navier-Stokes (NS) multi-fluid VOF model, in which slide material was considered as a nearly inviscid heavy fluid. Near-field tsunami impact was then simulated for each source using FUNWAVE-TVD, a dispersive and fully nonlinear long wave Boussinesq model [ Shi et al. (Ocean Modell 43-44:36-51, 2012); Kirby et al. (Ocean Modeling, 62:39-55, 2013)]. Here, using FUNWAVE-TVD for a series of nested grids of increasingly fine resolution, we model and analyze far-field tsunami impact from two of Abadie et al.'s extreme CVV flank collapse scenarios: (i) that deemed the most "credible worst case scenario" based on a slope stability analysis, with a 80 km^3 volume; and (ii) the most extreme scenario, similar to Ward and Day's, with a 450 km^3 volume. Simulations are performed using a one-way coupling scheme in between two given levels of nested grids. Based on the simulation results, the overall tsunami impact is first assessed in terms of maximum surface

  20. Humic substances in performance assessment of nuclear waste disposal: Actinide and iodine migration in the far-field. Third technical progress report

    International Nuclear Information System (INIS)

    The present report describes progress within the third and final year of the EC-project 'Humic Substances in Performance Assessment of Nuclear Waste Disposal: Actinide and Iodine Migration in the Far-Field'. The work conducted within the present project builds on a number of previous activities/project supported by the Commission. It finds its continuation within different EC FP 6 instruments and also provides for additional continued cooperation through network structures resulting from the broad cooperation within the project. Without being a formal requirement of the Commission or co-funding bodies, this report documents results in great technical detail and makes the results available to a broad scientific community. The report contains an executive summary written by the coordinator. More detailed results are given as individual contributions in the form of 12 annexes. Not all results are discussed or referred to in the executive summary report and thus readers with a deeper interest also need to consult the annexes. The overall objectives were to generate knowledge about the impact of humic substances on the migration of actinides and iodine in the far-field of a nuclear waste repository. In the beginning, focus was rather on the potential enhancement due to humic colloid mediated radionuclide transport. Thereby, sources, inventory, stability and mobility of dissolved humic substances in their colloidal form formed a key topic. Other key topics were the interaction with actinides and iodine, transport studies under near-natural conditions in the laboratory, rationalization of knowledge in models and application to three migration cases for visualization of the overall outcome. Changes relative to the original objectives were given by moving emphasis of natural chemical analogue studies from the question of kinetic exchange constants for different inventories in natural and laboratory systems to the study of anthropogenic actinide contaminants in the Irish Sea

  1. Effects of near surface soil moisture profiles during evaporation on far-field ground-penetrating radar data: A numerical study

    KAUST Repository

    Moghadas, Davood

    2013-01-01

    We theoretically investigated the effect of vapor flow on the drying front that develops in soils when water evaporates from the soil surface and on GPR data. The results suggest the integration of the full-wave GPR model with a coupled water, vapor, and heat flow model to accurately estimate the soil hydraulic properties. We investigated the Effects of a drying front that emerges below an evaporating soil surface on the far-field ground-penetrating radar (GPR) data. First, we performed an analysis of the width of the drying front in soils with 12 different textures by using an analytical model. Then, we numerically simulated vertical soil moisture profiles that develop during evaporation for the soil textures. We performed the simulations using a Richards flow model that considers only liquid water flow and a model that considers coupled water, vapor, and heat flows. The GPR signals were then generated from the simulated soil water content profiles taking into account the frequency dependency of apparent electrical conductivity and dielectric permittivity. The analytical approach indicated that the width of the drying front at the end of Stage I of the evaporation was larger in silty soils than in other soil textures and smaller in sandy soils. We also demonstrated that the analytical estimate of the width of the drying front can be considered as a proxy for the impact that a drying front could have on far-field GPR data. The numerical simulations led to the conclusion that vapor transport in soil resulted in S-shaped soil moisture profiles, which clearly influenced the GPR data. As a result, vapor flow needs to be considered when GPR data are interpreted in a coupled inversion approach. Moreover, the impact of vapor flow on the GPR data was larger for silty than for sandy soils. These Effects on the GPR data provide promising perspectives regarding the use of radars for evaporation monitoring. © Soil Science Society of America 5585 Guilford Rd., Madison, WI

  2. Appendix A

    DEFF Research Database (Denmark)

    Henriksen, M. S.; Brincker, Rune; Heshe, Gert

    1999-01-01

    In this appendix a brief summary of experiments on reinforced concrete beams in three-point bending performed at Aalborg University is given. The aim of the investigation is to determine the full load-deflection curves for different beam sizes, different types of concrete and different amounts an...

  3. Appendix C

    DEFF Research Database (Denmark)

    Christensen, F. A.; Henriksen, M. S.; Brincker, Rune

    1999-01-01

    In this appendix a model is formulated for the rotational capacity of reinforced concrete beams assuming rebar tension failure. The model is based on a classical approach and establishes the load-deflection curve of a reinforced concrete beam. The rotational capacity is then obtained as the area ...

  4. Appendix B

    DEFF Research Database (Denmark)

    Christensen, F. A.; Brincker, Rune

    1999-01-01

    In this appendix the failure behaviour of lightly reinforced concrete beams is investigated. A numerical model based on the fictitious crack approach according to Hillerborg [1] is established in order to estimate the load-deflection curve for lightly reinforced concrete beams. The debonding betw...

  5. Prediction and measurement of the electromagnetic environment of high-power medium-wave and short-wave broadcast antennas in far field.

    Science.gov (United States)

    Tang, Zhanghong; Wang, Qun; Ji, Zhijiang; Shi, Meiwu; Hou, Guoyan; Tan, Danjun; Wang, Pengqi; Qiu, Xianbo

    2014-12-01

    With the increasing city size, high-power electromagnetic radiation devices such as high-power medium-wave (MW) and short-wave (SW) antennas have been inevitably getting closer and closer to buildings, which resulted in the pollution of indoor electromagnetic radiation becoming worsened. To avoid such radiation exceeding the exposure limits by national standards, it is necessary to predict and survey the electromagnetic radiation by MW and SW antennas before constructing the buildings. In this paper, a modified prediction method for the far-field electromagnetic radiation is proposed and successfully applied to predict the electromagnetic environment of an area close to a group of typical high-power MW and SW wave antennas. Different from currently used simplified prediction method defined in the Radiation Protection Management Guidelines (H J/T 10. 3-1996), the new method in this article makes use of more information such as antennas' patterns to predict the electromagnetic environment. Therefore, it improves the prediction accuracy significantly by the new feature of resolution at different directions. At the end of this article, a comparison between the prediction data and the measured results is given to demonstrate the effectiveness of the proposed new method.

  6. FDTD analysis of temperature elevation in the lens of human and rabbit models due to near-field and far-field exposures at 2.45 GHz.

    Science.gov (United States)

    Oizumi, Takuya; Laakso, Ilkka; Hirata, Akimasa; Fujiwara, Osamu; Watanabe, Soichi; Taki, Masao; Kojima, Masami; Sasaki, Hiroshi; Sasaki, Kazuyuki

    2013-07-01

    The eye is said to be one of the most sensitive organs to microwave heating. According to previous studies, the possibility of microwave-induced cataract formation has been experimentally investigated in rabbit and monkey eyes, but not for the human eye due to ethical reasons. In the present study, the temperature elevation in the lens, the skin around the eye and the core temperature of numerical human and rabbit models for far-field and near-field exposures at 2.45 GHz are investigated. The temperature elevations in the human and rabbit models were compared with the threshold temperatures for inducing cataracts, thermal pain in the skin and reversible health effects such as heat exhaustion or heat stroke. For plane-wave exposure, the core temperature elevation is shown to be essential both in the human and in the rabbit models as suggested in the international guidelines and standards. For localised exposure of the human eye, the temperature elevation of the skin was essential, and the lens temperature did not reach its threshold for thermal pain. On the other hand, the lens temperature elevation was found to be dominant for the rabbit eye. PMID:23390146

  7. Far-Field Tunable Nano-focusing Based on Metallic Slits Surrounded with Nonlinear-Variant Widths and Linear-Variant Depths of Circular Dielectric Grating

    CERN Document Server

    Cao, Peng-Fei; Zhang, Xiao-Ping; Lu, Wei-Ping; Kong, Wei-Jie; Liang, Xue-Wu

    2013-01-01

    In this work, we design a new tunable nanofocusing lens by the linear-variant depths and nonlinear-variant widths of circular grating for far field practical applications. The constructively interference of cylindrical surface plasmon launched by the subwavelength metallic structure can form a subdiffraction-limited focus, and the focal length of the this structures can be adjusted if the each groove depth and width of circular grating are arranged in traced profile. According to the numerical calculation, the range of focusing points shift is much more than other plasmonic lens, and the relative phase of emitting light scattered by surface plasmon coupling circular grating can be modulated by the nonlinear-variant width and linear-variant depth. The simulation result indicates that the different relative phase of emitting light lead to variant focal length. We firstly show a unique phenomenon for the linear-variant depths and nonlinear-variant widths of circular grating that the positive change and negative ...

  8. Numerical modeling of deep oceanic slab dehydration: Implications for the possible origin of far field intra-continental volcanoes in northeastern China

    Science.gov (United States)

    Sheng, Jian; Liao, Jie; Gerya, Taras

    2016-03-01

    Intra-continental volcanoes have different origins compared to arc volcanoes, and several conflicting geodynamic mechanisms of intra-continental magmatism have been proposed, which require quantitative testing. In this paper, we investigate numerically possible influences of deep subducted slab dehydration processes for the development of intra-continental volcanoes distributed in northeastern China. We employ 2D thermo-mechanical numerical models to investigate the complex dynamics of long-term subduction process, including slab interaction with mantle transition zone, deep oceanic plate dehydration, trench rollback, and back-arc extension. Our experiments show systematically that water can be transported to the transition zone by stagnant slabs hydrating the overlaying deep asthenospheric mantle. Positively buoyant partially molten hydrous plumes arising from the hydrated area formed atop the slabs can propagate upwards and form partially molten mantle regions under the far field continental plate. Our numerical models thus suggest that the development of widely distributed intra-continental volcanism in northeastern China could be related to the rising of multiple relatively small hydrous plumes triggered by stagnant paleo-Pacific slab dehydration in the transition zone.

  9. Prediction and measurement of the electromagnetic environment of high-power medium-wave and short-wave broadcast antennas in far field

    International Nuclear Information System (INIS)

    With the increasing city size, high-power electromagnetic radiation devices such as high-power medium-wave (MW) and short-wave (SW) antennas have been inevitably getting closer and closer to buildings, which resulted in the pollution of indoor electromagnetic radiation becoming worsened. To avoid such radiation exceeding the exposure limits by national standards, it is necessary to predict and survey the electromagnetic radiation by MW and SW antennas before constructing the buildings. In this paper, a modified prediction method for the far-field electromagnetic radiation is proposed and successfully applied to predict the electromagnetic environment of an area close to a group of typical high-power MW and SW wave antennas. Different from currently used simplified prediction method defined in the Radiation Protection Management Guidelines (H J/T 10. 3 -1996), the new method in this article makes use of more information such as antennas' patterns to predict the electromagnetic environment. Therefore, it improves the prediction accuracy significantly by the new feature of resolution at different directions. At the end of this article, a comparison between the prediction data and the measured results is given to demonstrate the effectiveness of the proposed new method. (authors)

  10. Enhancement of the computational efficiency of the near-to-far field mapping in the finite-difference method and ray-by-ray method with the fast multi-pole plane wave expansion approach

    Science.gov (United States)

    Tang, Guanglin; Yang, Ping; Sun, Bingqiang; Panetta, R. Lee; Kattawar, George W.

    2016-06-01

    The finite-difference time-domain (FDTD) and ray-by-ray (RBR) methods are techniques used to calculate the optical properties of nonspherical particles for small-to-moderate and large size parameters, respectively. The former is a rigorous method, and the latter is an approximate geometric-physical optics-hybrid method that takes advantage of both high efficiency of the geometric optics approach and high accuracy of the physical optics approach. In these two methods, the far field is calculated by mapping the near field to the far field with consideration of the phase interference. The mapping computation is more time-consuming than the near-field simulation when multiple scattering directions are involved, particularly in the case of the RBR implementation. To overcome the difficulty, in this study the fast multi-pole method is applied to both FDTD and RBR towards accelerating the far-field calculation, without degrading the accuracy of the simulation results.

  11. 单侧声带振动的远场声压研究%Research on the far-field sound pressure model of unilateral vocal cord vibration

    Institute of Scientific and Technical Information of China (English)

    赵晓; 曹辉; 徐晨

    2013-01-01

    Based on the physical structure and the vibration characteristics of the unilateral vocal cords, this paper pro-posed a unilateral vocal cold vibration model. The far-field sound pressure distribution of the unilateral vocal cord vi-bration model was calculated on the usage of acoustic theory and Rayleigh Integral. The sound pressure distribution pattern was calculated by numerical simulation, which was compared with the sound pressure distribution of the normal vocal cold model in the radiated sound field. The results showed that the sound pressure ratio almost does not change with the change of the direction angle when the vocal cord gap width is identical in the audio frequency range. When the direction angle remains unchanged, the sound pressure ratio decreases linearly with the increase of pores.%根据单侧声带的生理结构和振动特性,提出单侧声带振动模型。运用声学基本理论,采用瑞利积分,计算了此单侧声带模型振动的远场声压分布,仿真数值计算了声压分布规律,并与正常声带模型辐射声场的声压进行比较。结果表明,在音频范围内,在声带空隙宽度相同的条件下,声压比值几乎不随方向角的改变而改变。而在方向角相同情况下,声压比值随着孔隙的增加呈线性下降。

  12. Research and Implementation of Far Field Antenna Testing System%远场天线测试系统的研究与实现

    Institute of Scientific and Technical Information of China (English)

    江思杰; 程照明; 江传华

    2014-01-01

    Aiming at the process and requirements of antenna parameters test, we analyze the main problems in the antenna parameters test, study the influence of environmental factors on measurements in the actual test process, and propose a design of an automatic test system based on virtual instrument technology for far field antenna performance parameters. We elaborate the system components and working principles, including the control principles of a vector network analyzer, an antenna test turntable and a derrick and the timing design of data acquisition. Combined with Matlab, we realize the error compensation of affecting factors and the testing calculation methods of antenna performance parameters, use da-tabase technology to accomplish antenna test data storage, read and report printing, and verify the reliability and feasibility of the scheme through field test experiment.%针对天线参数测试过程及测试要求,分析天线参数测试中的主要问题,研究实际测试过程中环境因素对天线参数测量结果的影响,提出了一种基于虚拟仪器技术的远场天线性能参数自动测试系统的设计方案,详细阐述了该方案的系统组成部分与工作原理,包括矢量网络分析仪、天线测试转台与吊杆的控制原理以及数据采集的时序设计,结合Matlab实现了对影响因素的误差补偿与天线性能参数的测试计算方法,利用数据库技术实现天线测试数据的存储、读取与报告打印,通过现场测试试验验证了该方案的可靠性与可行性。

  13. FDTD analysis of human body-core temperature elevation due to RF far-field energy prescribed in the ICNIRP guidelines

    Science.gov (United States)

    Hirata, Akimasa; Asano, Takayuki; Fujiwara, Osamu

    2007-08-01

    This study investigated the relationship between the specific absorption rate and temperature elevation in an anatomically-based model named NORMAN for exposure to radio-frequency far fields in the ICNIRP guidelines (1998 Health Phys. 74 494-522). The finite-difference time-domain method is used for analyzing the electromagnetic absorption and temperature elevation in NORMAN. In order to consider the variability of human thermoregulation, parameters for sweating are derived and incorporated into a conventional sweating formula. First, we investigated the effect of blood temperature variation modeling on body-core temperature. The computational results show that the modeling of blood temperature variation was the dominant factor influencing the body-core temperature. This is because the temperature in the inner tissues is elevated via the circulation of blood whose temperature was elevated due to EM absorption. Even at different frequencies, the body-core temperature elevation at an identical whole-body average specific absorption rate (SAR) was almost the same, suggesting the effectiveness of the whole-body average SAR as a measure in the ICNIRP guidelines. Next, we discussed the effect of sweating on the temperature elevation and thermal time constant of blood. The variability of temperature elevation caused by the sweating rate was found to be 30%. The blood temperature elevation at the basic restriction in the ICNIRP guidelines of 0.4 W kg-1 is 0.25 °C even for a low sweating rate. The thermal time constant of blood temperature elevation was 23 min and 52 min for a man with a lower and a higher sweating rate, respectively, which is longer than the average time of the SAR in the ICNIRP guidelines. Thus, the whole-body average SAR required for blood temperature elevation of 1 °C was 4.5 W kg-1 in the model of a human with the lower sweating coefficients for 60 min exposure. From a comparison of this value with the basic restriction in the ICNIRP guidelines of 0

  14. 大功率堆积型激光阵列光束的远场分布模型%Far-field distribution pattern of high diode laser stack

    Institute of Scientific and Technical Information of China (English)

    高全华; 王晋国; 孙锋利

    2014-01-01

    为了合理地设计光学系统以整形大功率激光二极管阵列(High Diode Laser Stack)出射光束,必须准确了解HDLS的远场分布,然而对于HDLS远场分布的研究还不多。从亥姆霍兹方程出发,以激光二极管(Diode Laser)远场分布特性为基础,提出了一种新的半导体激光器阵列的远场分布模型,通过计算机仿真给出了简化DLS 模型的远场光场变化图;模型还可表示不对称的双峰结构,有一定的现实意义。%In order to design optical system to collimate laser beam,its far-field distribution should be acquired exact-ly.Based on Helmholtz equation and far-field distribution characteristic of DL(diode laser),a new far-field expression model of DLS(diode laser stack)is proposed.The changing graph of far-field intensity distribution of the simplified DLS is given by simulation. The model has some practical significance because it can express asymmetrical double-peak structure.

  15. Far field tsunami simulations of the 1755 Lisbon earthquake: Implications for tsunami hazard to the U.S. East Coast and the Caribbean

    Science.gov (United States)

    Barkan, R.; ten Brink, U.S.; Lin, J.

    2009-01-01

    The great Lisbon earthquake of November 1st, 1755 with an estimated moment magnitude of 8.5-9.0 was the most destructive earthquake in European history. The associated tsunami run-up was reported to have reached 5-15??m along the Portuguese and Moroccan coasts and the run-up was significant at the Azores and Madeira Island. Run-up reports from a trans-oceanic tsunami were documented in the Caribbean, Brazil and Newfoundland (Canada). No reports were documented along the U.S. East Coast. Many attempts have been made to characterize the 1755 Lisbon earthquake source using geophysical surveys and modeling the near-field earthquake intensity and tsunami effects. Studying far field effects, as presented in this paper, is advantageous in establishing constraints on source location and strike orientation because trans-oceanic tsunamis are less influenced by near source bathymetry and are unaffected by triggered submarine landslides at the source. Source location, fault orientation and bathymetry are the main elements governing transatlantic tsunami propagation to sites along the U.S. East Coast, much more than distance from the source and continental shelf width. Results of our far and near-field tsunami simulations based on relative amplitude comparison limit the earthquake source area to a region located south of the Gorringe Bank in the center of the Horseshoe Plain. This is in contrast with previously suggested sources such as Marqu??s de Pombal Fault, and Gulf of C??diz Fault, which are farther east of the Horseshoe Plain. The earthquake was likely to be a thrust event on a fault striking ~ 345?? and dipping to the ENE as opposed to the suggested earthquake source of the Gorringe Bank Fault, which trends NE-SW. Gorringe Bank, the Madeira-Tore Rise (MTR), and the Azores appear to have acted as topographic scatterers for tsunami energy, shielding most of the U.S. East Coast from the 1755 Lisbon tsunami. Additional simulations to assess tsunami hazard to the U.S. East

  16. 近远场变换中探头方向图的改进与比较%Comparison and Improvement of Probe Patterns in Near-to-Far Field Transformation

    Institute of Scientific and Technical Information of China (English)

    陈玉林; 杨涛; 黄文涛

    2014-01-01

    In order to improve the sidelobe precision in PNF,two new H-plane probe patterns were used in the near-to-far field transformation.The results were analyzed and compared with other two traditional H-plane probe patterns.An array antenna was measured in anechoic chamber.Two traditional methods which are Stratton-chu integral and the E-field integration method and two new methods which are the fringe current and the fringe current approaching method were used in the near-to-far field transformation.The results indicate that the sidelobe precision achieved by the two new methods is close to the international advanced level and is much higher than present level at home.Also,the method is proved to be practical.%基于进一步提高国内平面近场测量中的副瓣精度,将两种新的探头 H面方向图应用到近远场变换中,并与国内目前搭建近场测试系统所使用的两种探头方向图进行结果分析与比较。通过在微波暗室对某频段阵列天线测量,并分别用传统的 Stratton-chu积分法、E面电场法以及边缘电流法与边缘电流逼近法进行近远场变换。结果表明,新的探头方向图应用使副瓣测试精度基本接近国际先进水平,远远优于国内现有水平,具有很强的工程实用性。

  17. Ship Structural Response Analysis of Computational Modelling under Far-field Underwater Explosion%水下远场爆炸下船舶结构响应计算有限元建模方式影响分析

    Institute of Scientific and Technical Information of China (English)

    张安; 刘均; 程远胜

    2014-01-01

    利用有限元软件ABAQUS,针对船舶结构和设备采用不同建模方式,建立4种水下远场爆炸载荷作用下全船结构冲击响应计算的有限元模型,对比分析船体结构局部与总体冲击响应。结果表明:船舶骨材结构与设备的建模方式对结构局部冲击响应如加速度、应力等影响很大,而对结构的总体响应如剖面弯矩等刚性安装设备采用质量点均摊的方式处理以减小建模的工作量。对于大型的弹性安装设备,需采用质量点和弹簧单元仔细建模。%Four different FE models of ship structure and equipments were established to analysis the structural response un -der far-field underwater explosion in ABAQUS .The local and the overall hull structural responses from the four models were com -pared.The results showed that in the case of far-field underwater explosion , the local hull structural responses , such as accelera-tion and stress , are greatly influenced by the modeling methods of stiffeners and equipment .For overall structural responses , such as section moments , stiffeners can be treated as distributed mass in the shell and rigid mounted equipment can be simplified as distributed mass element to reduce workload .The modeling method of flexible mounted equipment has influence on both local hull structure impulse response and overall hull impulse response , so they should be fine modeled using mass elements and con-nector elements .

  18. Eustatic and far-field tectonic control on the development of an intra-platform carbonate-shoal complex: upper tongue of the Tanglewood Member, Upper Ordovician Lexington Limestone, central Kentucky, U.S.A.

    Science.gov (United States)

    Koirala, Dibya Raj; Ettensohn, Frank R.; Clepper, Marta L.

    2016-11-01

    the thickest and coarsest parts of each sequence, and the shallowest depositional environments, coincide with basement fault blocks, which are known to have experienced uplift during earlier Lexington Limestone deposition. The occurrence of thick, coarse facies on the same blocks suggests that the blocks continued to experience uplift into shallow water, where tides and waves redistributed sediments during upper Tanglewood deposition. Although eustasy apparently controlled cyclicity, Taconian far-field forces generated by orogeny in the east seem to have influenced facies distribution in each cycle through reactivation of basement fault zones as synsedimentary growth faults. The example of the upper Tanglewood Member shows that tectonic far-field forces can exert important influences on the development of carbonate depositional environments, even in distal intracratonic settings like the Lexington Platform.

  19. Engineering Study on the CCD-based Measurement of Pulse Laser far-field Divergence Angle%基于CCD的脉冲激光器远场发散角工程化研究

    Institute of Scientific and Technical Information of China (English)

    邢勇; 邢冀川; 宋艳

    2011-01-01

    简述了激光光束的基本参数及特性,并介绍了采用CCD进行激光发散角测量的基本原理和装置.用CCD测量光斑可以及时获得光斑的二维扫描结果.实际工程应用时常采用CCD来测量激光远场发散角.进一步介绍了使用CCD摄像法进行发散角测量所采用的系统软件设计,首次提出了采用图像处理的方法来捕捉脉冲激光光斑.%This paper demonstrated the basic parameters and characteristics of laser beam, and introduced the basic principles and the devices used in the CCD laser divergence angle measurement method. Using CCD to measure the beam spot can gain the two-dimensional scanned result in a real-time manager. As a result, CCD was always used to measure Far-field divergence angle of the laser beam in the real engineering applications. The paper also made a further introduction of software design in the measuring system using CCD camera method. Finally, it is the first time that by the image-processing method to acquire pulse laser spot is introduced.

  20. SEISMIC RESPONSE OF COMPOSITE FRAME WITH CFST COLUMNS UNDER FAR-FIELD GROUND MOTION%远场地震作用下钢管混凝土组合框架的地震反应分析

    Institute of Scientific and Technical Information of China (English)

    王文达; 王军

    2012-01-01

    A typical 10-story composite frame with concrete filled steel tubular (CFST) columns was designed to study the seismic response under far-field ground motion. 28 far-field (>10km) ground motion records in the strong motion database from the Pacific Earthquake Engineering Research (PEER) Center were used for the ground motion input. The sites were divided into four types, named A, B, C and D respectively, according with the classification of United States Geological Survey (USGS). The nonlinear fiber beam-column element was used to simulate the CFST columns and beams, respectively, and the elastic-plastic dynamic time history analysis was performed using OpenSees under meeting more and rare earthquakes of the seismic precautionary intensity in 8 degrees. The results were compared with that of pushover analysis. It is shown that the seismic response of the composite frame exhibits some regularity under different sites and ground motions though the results are discrete. The inverted triangle lateral load pattern is more similar to the result of dynamic time history analysis than the uniform distribution lateral load pattern for the regular composite frame structures, thusly the inverted triangle lateral load pattern should be used to the pushover analysis for the composite frame with CFST columns.%为研究在远场地震动作用下钢管混凝土组合框架的反应,设计了某10层钢管混凝土组合框架,从PEER强震记录数据库中选取了28条远场(距离大于10km)强震地震动记录作为输入地震波,按美国地质勘探局(USGS)对场地类别分类方法将其分为A、B、C、D四类,基于OpenSees建立了非线性纤维梁柱单元的理论模型,对其进行了设防烈度为8度时多遇和罕遇地震作用下弹塑性时程分析,计算结果同时与Pushover分析结果进行了对比.结果表明:虽然不同地震动作用下钢管混凝土组合框架结构反应的离散性较大,但该类结构在不同场地类别下的反应

  1. Simulation study of the effects of near- and far-field heating during focused ultrasound uterine fibroid ablation using an electronically focused phased array: A theoretical analysis of patient safety

    Energy Technology Data Exchange (ETDEWEB)

    Ellens, Nicholas, E-mail: nicholas.ellens@utoronto.ca; Hynynen, Kullervo [Sunnybrook Research Institute, Toronto, Ontario M4N 3M5, Canada and Department of Medical Biophysics, University of Toronto, Toronto, Ontario M5G 1L7 (Canada)

    2014-07-15

    Purpose: Assess the feasibility of using large-aperture, flat ultrasonic transducer arrays with 6500 small elements operating at 500 kHz without the use of any mechanical components for the thermal coagulation of uterine fibroids. This study examines the benefits and detriments of using a frequency that is significantly lower than that used in clinical systems (1–1.5 MHz). Methods: Ultrasound simulations were performed using the anatomies of five fibroid patients derived from 3D MRI. Using electronic steering solely, the ultrasound focus from a flat, 6500-element phased array was translated around the volume of the fibroids in various patterns to assess the feasibility of completing full treatments from fixed physical locations. Successive temperature maps were generated by numerically solving the bioheat equation. Using a thermal dose model, the bioeffects of these simulations were quantified and analyzed. Results: The simulations indicate that such an array could be used to perform fibroid treatments to 18 EM{sub 43} at an average rate of 90 ± 20 cm{sup 3}/h without physically moving the transducer array. On average, the maximum near-field thermal dose for each patient was below 4 EM{sub 43}. Fibroid tissue could be treated as close as 40 mm to the spine without reaching temperatures expected to cause pain or damage. Conclusions: Fibroids were successfully targeted and treated from a single transducer position to acceptable extents and without causing damage in the near- or far-field. Compared to clinical systems, treatment rates were good. The proposed treatment paradigm is a promising alternative to existing systems and warrants further investigation.

  2. 战斗部远场水下爆炸对舰船冲击损伤评估%Evaluation Study on Shock Damage of Ship Subjected to Blasting Warhead Far-Field Underwater Explosion

    Institute of Scientific and Technical Information of China (English)

    程素秋; 王树乐; 陈高杰

    2014-01-01

    利用128核并行计算版ABAQUS软件对爆破型战斗部由远至近攻击舰船的5个工况进行数值模拟,给出主甲板、内底和底龙骨等重要部位的加速度响应,分析冲击因子为0.24~0.78时加速度响应的变化规律。利用实船爆炸试验测量结果对所用仿真算法进行对比验证,并提出采用相对加速度冲击因子的表征参数来评价战斗部远场水下爆炸对靶船的冲击损伤效果。研究成果可为爆破型战斗部毁伤能力评估及舰船结构抗冲击性能评估提供参考。%This paper creates simulations of five loaded cases of a ship subjected to blasting warhead explo⁃sions from afar to near using the ABAQUS codes of 128 cores parallel version. The acceleration response of important locations such as the main deck, inner bottom,and bottom keel are obtained. The varying rule of different shock factors from 0.24 to 0.78 are analyzed, and the presented simulation arithmetic is then veri⁃fied with the real ship shock test measuring results. A token parameter of relative acceleration shock factor is proposed to evaluate the ship shock damage subjected to warhead far-field underwater explosions. The results can provide great references for evaluation of potential blasting warhead damage and ship structure anti-shock capacity.

  3. Appendix E: Geology

    Energy Technology Data Exchange (ETDEWEB)

    Reidel, Steve; Chamness, Mickie A.

    2008-01-17

    This appendix provides a detailed description of geology under the Central Plateau of the Hanford Site, emphasizing the areas around tank farms. It is to be published by client CH2M HILL Hanford Group, Inc., as part of a larger, multi-contractor technical report.

  4. Study of far-field pressure wavelet of air-gun bubble based on p otential flow theory%基于势流理论的气枪气泡远场压力子波特性研究

    Institute of Scientific and Technical Information of China (English)

    叶亚龙; 李艳青; 张阿漫

    2014-01-01

    The study of far-field pressure wavelet of air-gun bubble is the basic research of air-gun sources. In this paper, a boundary element bubble model is established to simulate the dynamics of bubble, and an energy equivalent method is put forward to solve the bottleneck of bubble jet. In our simplified model, the bubble model takes into consideration the thermodynamic factors such as heat transfer and gas release, and the numerical results agree with the data of Nucleus software well. Based on the established model, the influence of heat transfer coefficient, air-gun firing time, and specific heat at constant volume on the pressure wavelet are studied. Finally, the three-dimensional bubble merging numerical method is put forward, which is an expansion of the axisymmetric model. Thus, the preliminary study of coherent air-gun is conducted, especially the influence of the space between two bubbles on the wavelet. This paper provides a reference for the research of air-gun.%气枪气泡的远场压力子波特性研究是研究气枪震源的基础,本文在前人研究基础上建立了三维边界元气泡动力学模型,并针对气泡射流这一技术瓶颈提出了能量等效算法。再在上述模型中加入了简化的热力学模型,考虑了气枪释放气体以及气泡传热等热力学因素,将上面模型计算结果和Nucleus软件模拟结果对比,两者符合良好,并以此为基础探讨了传热系数、气枪发射时间、气体等体比热容对气枪主要参数的影响规律。最后将轴对称气泡融合技术拓展到三维边界元模型,对相干枪进行初步研究,探讨了气枪间距对压力子波的影响规律,旨在为气枪的研究提供参考。

  5. Analysis of the near-field-far-field pattern of tilted planar antenna arrays%斜置平面天线阵的近场-远场方向图分析

    Institute of Scientific and Technical Information of China (English)

    刘俊群

    2012-01-01

    Based on the principle of planar near-field measurement and theory on the spatial pattern of planar antenna arrays, a comprehensive investigation on the spatial pattern of planar antenna arrays tilting away from the planar near-field scanning plane is performed. An efficient computational algorithm on the near-field-far-field pattern in the plane determined by the rotation axis and normal line of the tilted array is developed. The parametric equations on the intersecting curve locus between the plane and unit directional sphere of the planar near-field scanning are thus derived. Consequently, the spatial pattern of the tilted antenna array based on the near-field data is calculated by fast Fourier transform technique, and at the same time a two-dimensional interpolating scheme to evaluate the pattern in the plane is developed. The capability, efficiency, and feasibility of this new algorithm are demonstrated by the good consistency of the calculated results with the numerical simulations and experimental measurements.%从平面近场扫描数据处理原理和平面天线阵方向图理论出发,分析了相对于平面近场扫描平面斜置的平面天线阵方向图.基于斜置平面天线阵的空间结构关系,选择阵面旋转轴与阵面法线形成的平面为性能评估考察平面,发展了一种快速计算性能评估平面方向图的方法.得出该平面与平面近场扫描坐标系单位方向球相交曲线的轨迹参数方程.利用快速傅里叶变换技术,计算出斜置平面天线阵平面近场扫描空间方向图,在此基础上结合轨迹参数方程和二维插值方法解出对应该性能评估平面的方向图数据.数值仿真和实际应用结果表明该分析结论和方法的可靠性与实用性.

  6. Design of Rotating Platform Servo System for Far-field Antenna in Microwave Darkroom%微波暗室远场天线测试转台伺服系统的设计

    Institute of Scientific and Technical Information of China (English)

    余亚飞; 贾平平

    2015-01-01

    高性能天线的研发离不开一套高精度的测试系统。天线测试系统主要包括转台伺服系统、测试仪器、监控系统。其中转台伺服系统的优劣直接影响到微波暗室天线测试的准确性,因此伺服系统的设计显得十分重要。文中设计的微波暗室天线测试转台伺服系统通过ARM处理器控制电机的转动,调整被测天线的姿态的同时记录天线的天线图测试数据。系统可以自动完成远场收发双向测量,降低了测试的难度。借助频谱仪,伺服系统能够准确测量天线方向图、主瓣宽度、波瓣宽度、增益等参数。该伺服系统具有测量误差小、抗干扰能力强、测量灵敏度高等特点。随着微波暗室天线测试技术广泛应用到工业项目,该转台伺服系统具有很高的实用价值。%Development of high performance antenna depends on a high-precision test system. Antenna test system includes servo system, test equipment and monitoring system. The merit of the servo system affects the accuracy of the anechoic chamber antenna test directly. Thus,the design of the servo system is significant. Put forward an antenna pattern test servo system which controls the rotation of the mo-tor through the ARM processor,in order to record the antenna test data while adjusting the measured antenna attitude. This servo system can receive bi-far-field measurements automatically and reduce the difficulty of testing. By means of spectrum analyzer,the servo system can precisely measure antenna pattern,the beam width,the side lobe width,antenna gain and other parameters,which has a small measure-ment error,strong anti-interference ability and is capable of high sensitivity measurements. As the test of microwave anechoic chamber antenna technology is widely applied to industrial projects,this rotating servo system has very high practical value.

  7. 基于三维SAR成像的RCS近远场变换方法研究%Research on Methods of Targets’ RCS Near-field-to-far-field Transformation Based on 3-D SAR Imaging

    Institute of Scientific and Technical Information of China (English)

    张晓玲; 陈明领; 廖可非; 师君; 韦顺军

    2015-01-01

    微波3维成像能够准确地从背景噪声中分离出目标的散射信息,适用于外场目标电磁(EM)散射特性的分析和研究,因而从3维合成孔径雷达(SAR)成像的角度研究目标电磁的散射特性是目前的一个新兴的热门课题。该文以此为背景,首先从Stratton-Chu积分方程出发详细推导3维SAR的近场波数域成像过程,解释3维SAR成像的物理意义;然后阐述基于3维SAR成像的雷达散射截面积(RCS)近远场变换原理,介绍3维SAR图像的散射中心提取方法,给出基于3维SAR成像的RCS近远场变换算法;最后通过FEKO软件进行了仿真实验,得到了5个点目标的RCS近远场变换的方位特性曲线和频率特性曲线,并通过与理论情况的对比,验证该算法在RCS近远场变换技术中的有效性。%Microwave 3-D imaging technique can accurately separate and extract the attractive targets from the background noise. So it can be utilized to analyze and study the ElectroMagnetic (EM) scattering characteristics of the outfield targets. Thus researching the EM scattering characteristics of targets from the perspective of 3-D SAR imaging is becoming an emerging hot field. Based on the background above, firstly, the near field 3-D imaging process in wave-number domain is deduced from the Stratton-Chu integral equation and the physical meaning of 3-D SAR imaging is explained. Then, the principle of targets’ Radar Cross Section (RCS) Near-Field-to-Far-Field Transformation (NFFFT) based on 3-D SAR imaging is elaborated and the method of scattering center extraction from 3-D SAR image is introduced and the algorithm of targets’ RCS NFFFT based on 3-D SAR imaging technique is presented. Finally, though some experiments using the FEKO software, five scattering points’ observing angle characteristic curve and frequency characteristic curve are gotten. Through the comparative experiments with the ideal situation, the effectiveness of the RCS

  8. NEAR AND FAR-FIELD EFFECTS OF TSUNAMIS GENERATED BY THE PAROXYSMAL ERUPTIONS, EXPLOSIONS, CALDERA COLLAPSES AND MASSIVE SLOPE FAILURES OF THE KRAKATAU VOLCANO IN INDONESIA ON AUGUST 26-27, 1883

    Directory of Open Access Journals (Sweden)

    George Pararas-Carayannis

    2003-01-01

    source region. It took approximately 2.5 hours for the tsunami waves to refract around Java and reach Batavia (Jakarta where the only operating tide gauge existed. Wavesof 2.4 meters in height were recorded - but with an unusually long period of 122 minutes. The long period is attributed to modification due to resonance effects and did not reflect source characteristics. The tsunami travel time to Surabaya at the eastern part of Java was 11.9 hours. The reported wave was only 0.2 meters.The far field effects of the tsunami were noticeable around the world, but insignificant. Small sea level oscillations were recorded by tide gauges at Port Blair in the Andaman Sea, at Port Elizabeth in South Africa, and as far away as Australia, New Zealand, Japan, Hawaii, Alaska, the North-American West Coast, South America, and even as far away as the English Channel. It took 12 hours for the tsunami to reach Aden on the southern tip of the Arabian Peninsula, about 3800 nautical miles away. The wave reported at Aden, at Port Blair and at Port Elizabeth, represents the actual tsunami generated in the Sunda Strait. There were no land boundaries on the Indian Ocean side of Krakatau to prevent the tsunami energy from spreading in that direction. The tsunami travel time of a little over 300 nautical miles per hour to Aden appears reasonable. However, it is doubtful that the waves, which were reported at distant locations in the Pacific or in the Atlantic Ocean, represented the actual tsunami generated in the Sunda Strait. Very little, if any at all, of the tsunami energy could have escaped the surrounding inland seas to the east of the Sunda Strait. Most probably, the small waves that were observed in the Pacific as well as in the Atlantic were generated by the atmospheric pressure wave of the major Krakatoa explosion, and not from the actual tsunami generated in the Sunda Strait. The unusual flooding, which occurred at the Bay of Cardiff, in the U.K., was caused by atmospheric coupling of

  9. Static and wind tunnel near-field/far-field jet noise measurements from model scale single-flow base line and suppressor nozzles. Summary report. [conducted in the Boeing large anechoic test chamber and the NASA-Ames 40by 80-foot wind tunnel

    Science.gov (United States)

    Jaeck, C. L.

    1977-01-01

    A test program was conducted in the Boeing large anechoic test chamber and the NASA-Ames 40- by 80-foot wind tunnel to study the near- and far-field jet noise characteristics of six baseline and suppressor nozzles. Static and wind-on noise source locations were determined. A technique for extrapolating near field jet noise measurements into the far field was established. It was determined if flight effects measured in the near field are the same as those in the far field. The flight effects on the jet noise levels of the baseline and suppressor nozzles were determined. Test models included a 15.24-cm round convergent nozzle, an annular nozzle with and without ejector, a 20-lobe nozzle with and without ejector, and a 57-tube nozzle with lined ejector. The static free-field test in the anechoic chamber covered nozzle pressure ratios from 1.44 to 2.25 and jet velocities from 412 to 594 m/s at a total temperature of 844 K. The wind tunnel flight effects test repeated these nozzle test conditions with ambient velocities of 0 to 92 m/s.

  10. Combretastatin A4 phosphate.

    Science.gov (United States)

    West, Catharine M L; Price, Pat

    2004-03-01

    Combretastatin A4 phosphate (CA4P) is a water-soluble prodrug of combretastatin A4 (CA4). The vascular targeting agent CA4 is a microtubule depolymerizing agent. The mechanism of action of the drug is thought to involve the binding of CA4 to tubulin leading to cytoskeletal and then morphological changes in endothelial cells. These changes increase vascular permeability and disrupt tumor blood flow. In experimental tumors, anti-vascular effects are seen within minutes of drug administration and rapidly lead to extensive ischemic necrosis in areas that are often resistant to conventional anti-cancer treatments. Following single-dose administration a viable tumor rim typically remains from which tumor regrowth occurs. When given in combination with therapies targeted at the proliferating viable rim, enhanced tumor responses are seen and in some cases cures. Results from the first clinical trials have shown that CA4P monotherapy is safe and reduces tumor blood flow. There has been some promising demonstration of efficacy. CA4P in combination with cisplatin is also safe. Functional imaging studies have been used to aid the selection of doses for phase II trials. Both dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) and positron emission tomography can measure the anti-vascular effects of CA4P in humans. This review describes the background to the development of CA4P, its proposed mechanism of action, the results from the first clinical trials with CA4P and the role of imaging techniques in its clinical development.

  11. Horseshoe Appendix: An Extremely Rare Appendiceal Anomaly.

    Science.gov (United States)

    Singh, Ch Gyan; Nyuwi, Kuotho T; Rangaswamy, Raju; Ezung, Yibenthung S; Singh, H Manihar

    2016-03-01

    Appendiceal anomalies are extremely rare malformations that are usually found incidentally. Agenesis and duplication of the appendix has been well documented however, the cases of horseshoe appendix reported is very limited, only four cases reported so far. Here, we report a four and half-year-old who underwent interval appendectomy. Intraoperatively both the ends of the appendix were found to be communicating with the cecum with two separate base or stump located at a sagital disposal- the so called "horseshoe appendix".

  12. Waste-Management Education and Research Consortium (WERC) annual progress report, 1991--1992. Appendixes

    Energy Technology Data Exchange (ETDEWEB)

    1992-04-07

    This report contains the following appendices: Appendix A - Requirements for Undergraduate Level; Appendix B - Requirements for Graduate Level; Appendix C - Graduate Degree In Environmental Engineering; Appendix D - Non-degree Certificate Program; Appendix E - Curriculum for Associate Degree Program; Appendix F - Curriculum for NCC Program; Appendix G - Information 1991 Teleconference Series; Appendix H - Information on 1992 Teleconference Series; Appendix I - WERC interactive Television Courses; Appendix J - WERC Research Seminar Series; Appendix K - Sites for Hazardous/Radioactive Waste Management Series; Appendix L- Summary of Technology Development of the Second Year; Appendix M - List of Major Publications Resulting from WERC; Appendix N - Types of Equipment at WERC Laboratories.

  13. Streptococcus milleri in the appendix.

    Science.gov (United States)

    Poole, P M; Wilson, G

    1977-10-01

    The appendix was investigated as a possible habitat of Streptococcus milleri. Both normal and inflamed appendices were examined and the isolation rates compared. S. milleri was present in a quarter of the normal appendices and more than half of those associated with apendicitis--a difference that was statistically highly significant. The isolation rates throughout were indepencent of age. There was a pronounced connection between the presence of S. milleri in the appendix and the purulent manifestations of appendicitis. S. milleri was isolated from other abdominal sites associated with appendicitis. The frequency of isolation was increased by culture in an enrichment broth containing nalidixic acid and sulphadimidine.

  14. 24 CFR Appendix Ms-2 to Part 3500 - Appendix MS-2 to Part 3500

    Science.gov (United States)

    2010-04-01

    ... HOUSING AND URBAN DEVELOPMENT REAL ESTATE SETTLEMENT PROCEDURES ACT Pt. 3500, App. MS-2 Appendix MS-2 to... 24 Housing and Urban Development 5 2010-04-01 2010-04-01 false Appendix MS-2 to Part 3500 MS Appendix MS-2 to Part 3500 Housing and Urban Development Regulations Relating to Housing and...

  15. 24 CFR Appendix Ms-1 to Part 3500 - Appendix MS-1 to Part 3500

    Science.gov (United States)

    2010-04-01

    ... HOUSING AND URBAN DEVELOPMENT REAL ESTATE SETTLEMENT PROCEDURES ACT Pt. 3500, App. MS-1 Appendix MS-1 to... 24 Housing and Urban Development 5 2010-04-01 2010-04-01 false Appendix MS-1 to Part 3500 MS Appendix MS-1 to Part 3500 Housing and Urban Development Regulations Relating to Housing and...

  16. 13 CFR Appendix A to Subpart A of... - Appendix A to Subpart A of Part 113

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false Appendix A to Subpart A of Part 113 A Appendix A to Subpart A of Part 113 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION... ADMINISTRATOR General Provisions Pt. 113, Subpart A, App. A Appendix A to Subpart A of Part 113 Name of...

  17. 43 CFR Appendix A to Subpart A of... - Appendix A to Subpart A of Part 17

    Science.gov (United States)

    2010-10-01

    ... 43 Public Lands: Interior 1 2010-10-01 2010-10-01 false Appendix A to Subpart A of Part 17 A Appendix A to Subpart A of Part 17 Public Lands: Interior Office of the Secretary of the Interior... Race, Color, or National Origin Pt. 17, Subpt. A, App. A Appendix A to Subpart A of Part 17...

  18. Far Field Modeling Methods For Characterizing Surface Detonations

    Energy Technology Data Exchange (ETDEWEB)

    Garrett, A. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2015-10-08

    Savannah River National Laboratory (SRNL) analyzed particle samples collected during experiments that were designed to replicate tests of nuclear weapons components that involve detonation of high explosives (HE). SRNL collected the particle samples in the HE debris cloud using innovative rocket propelled samplers. SRNL used scanning electronic microscopy to determine the elemental constituents of the particles and their size distributions. Depleted uranium composed about 7% of the particle contents. SRNL used the particle size distributions and elemental composition to perform transport calculations that indicate in many terrains and atmospheric conditions the uranium bearing particles will be transported long distances downwind. This research established that HE tests specific to nuclear proliferation should be detectable at long downwind distances by sampling airborne particles created by the test detonations.

  19. Mapping molecules in scanning far-field fluorescence nanoscopy

    Science.gov (United States)

    Ta, Haisen; Keller, Jan; Haltmeier, Markus; Saka, Sinem K.; Schmied, Jürgen; Opazo, Felipe; Tinnefeld, Philip; Munk, Axel; Hell, Stefan W.

    2015-08-01

    In fluorescence microscopy, the distribution of the emitting molecule number in space is usually obtained by dividing the measured fluorescence by that of a single emitter. However, the brightness of individual emitters may vary strongly in the sample or be inaccessible. Moreover, with increasing (super-) resolution, fewer molecules are found per pixel, making this approach unreliable. Here we map the distribution of molecules by exploiting the fact that a single molecule emits only a single photon at a time. Thus, by analysing the simultaneous arrival of multiple photons during confocal imaging, we can establish the number and local brightness of typically up to 20 molecules per confocal (diffraction sized) recording volume. Subsequent recording by stimulated emission depletion microscopy provides the distribution of the number of molecules with subdiffraction resolution. The method is applied to mapping the three-dimensional nanoscale organization of internalized transferrin receptors on human HEK293 cells.

  20. Strong far field coherent scattering of ultraviolet radiation by holococcolithophores

    CERN Document Server

    Quintero-Torres, R; Torres, M; Estrada, M; Cros, L

    2007-01-01

    By considering the structure of holococcoliths (calcite plates that cover holococcolithophores, a haploid phase of the coccolithophore life cycle) as a photonic structure, we apply a discrete dipolar approximation to study the light backscattering properties of these algae. We show that some holococcolith structures have the ability to scatter the ultraviolet (UV) radiation. This property may represent an advantage for holococcolithophores possessing it, by allowing them to live higher in the water column than other coccolithophores.

  1. Far field effects of complex noise barrier reflections

    NARCIS (Netherlands)

    Lutgendorf, D.; Wessels, P.W.; Eerden, F.J.M. van den; Roo, F. de

    2012-01-01

    Within the EU FP7 QUIESST project, QUIeting the Environment for a Sustainable Surface Transport, a test method is being developed for the reflectivity of noise barriers. The method needs to account for a complex shape of barriers and the use of various types of absorbing materials. The performance o

  2. A Far-Field Electro-Magnetic Tractor Beam Project

    Data.gov (United States)

    National Aeronautics and Space Administration — When the project began, our intention was to develop a more accurate model of the forces that could be obtained between experimentally demonstrate...

  3. Far field hydrogeochemistry in the Oklo reactor area (Gabon)

    International Nuclear Information System (INIS)

    In the frame of a general study of the Oklo natural reactor, which takes into account the natural analogue aspect, a complete hydrogeological and hydrogeochemical study is undertaken. The partners of this study are the following: - Section de geochimie, CEA (France): P. Toulhoat, J.P. Gallien, P. L'Henoret, V. Moulin (groundwater chemistry and colloids). - Ecole des Mines de Paris (CIG, Fontainebleau) E. Ledoux, I. Gurban (hydrogeology and modelling) - SKB and Conterra AB (Sweden) J.A.T. Smellie, A. Winberg (hydrogeology, isotope geochemistry). The aim of this study is to try to understand and to characterize the possible mobilization of elements or isotopes when groundwaters come in contact with nuclear reaction zones. The first step of the study is presented here, which comprises a general geochemical and hydrodynamical characterization of the site. In this presentation, the site of Bagombe is also mentioned as it has been confirmed as sector in which nuclear fission reactions occurred as in Oklo. (author). 10 refs., 6 figs., 6 tabs

  4. Far-field hydrogeological model of Paks NPP

    International Nuclear Information System (INIS)

    Complete text of publication follows. The settlements in the vicinity of Paks NPP gain the drinking water from the lower Pannonian aquifers. Uncontrolled releases from the NPP enter into the shallow ground-water and they are transported to the Danube in the Quaternary alluvial sandy gravel layer. The hydraulic potential in the area increases with the depth, so leakage from the upper gravel layer to the lower aquifer is not possible in undisturbed circumstances. The question is that an overexploitation of drinking water can change the pressure conditions so that the contaminated water can enter from the upper gravel layer into the lower aquifer. To answer this question the Visual MODFLOW program was used to simulate the groundwater w, providing quantitative estimates of w rates, w paths and travel times. The simulation was designed to represent average steady-state w conditions. A mathematical model is a representation of a real system or process. The subsurface environment constitutes a complex, three-dimensional, heterogeneous hydrogeologic setting, which strongly influences groundwater flow and transport, and it can be described through careful hydrogeologic practice in the field. The conceptual model of the hydrogeological system in the surroundings of Paks NPP was constructed from the available geologic, hydrogeological, geographical and meteorological data. To obtain a unique solution of a generic model corresponding to a given area, additional information about the physical state of the system is required (boundary and initial conditions). The model was constructed on a 20km x 22km area, its eastern boundary is Danube, the others are defined as no w boundaries. The model consists of 5 main layers: upper sequences of Pleistocene alluvial sediments (sandy layer, Kx,y = 10-4m/s); lower sequences of Pleistocene alluvial sediments (gravel, Kx,y = 10-3m/s); upper Pannonian sediments of restricted transmissivity (Kx,y = 5 x 10-6m/s); Pannonian aquifer (Kx,y = 10-4m/s); lower Pannonian aquitard (Kx,y = 10-7m/s). The anisotropy factor for every layer was Kx,y/Kz = 10. Assuming average precipitation of 600 - 650 mm/y, a recharge rate of 10% (65 mm/y) and average water level in the Danube we found: - The groundwater in the Danube-valley is continuous and is recharged by precipitation in the higher elevations in Mezoefoeld. - The groundwater ws from the north- west to the south-east toward the Danube. - The mean residence time of groundwater in the lower Pannonian aquifer is 230 - 260 ys. - The contamination released from the NPP enters into the gravel and the ground-water transports it to the Danube. The water level of the Danube has little influence to the flow direction, but the travel times are shortened by low and increased by high water level. - The pressure conditions dont let the shallow groundwater and so the contamination w down to the Pannonian aquifer, rather an upwelling can be expected. - An increasing water production from the Pannonian aquifer can change the hydraulic heads and an overexploitation may alter the whole w system. In the present climatic conditions the enhancement of water production by a factor of four may change the basic w directions, and the contaminated water may get into the Pannonian aquifer. A permanent drought increases the vulnerability of the aquifer: because of the insufficient precipitation the recharge decreases, the hydraulic heads are depressed, and the w directions may reverse even in the case of restricted water production. (author)

  5. 31 CFR Appendixes to Chapter V - Note

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Note Appendixes to Chapter V Money... CONTROL, DEPARTMENT OF THE TREASURY Ch. V, Nt. Appendixes to Chapter V—Note Notes: The alphabetical lists.... References to regulatory parts in chapter V or other authorities: : Western Balkans Stabilization...

  6. 基于光导微探针的近场/远场可扫描太赫兹光谱技术∗%Near-field and far-field scanning terahertz sp ectroscopy based on photo conductive microprob e

    Institute of Scientific and Technical Information of China (English)

    许悦红; 张伟力; 张学迁; 王球; 田震; 谷建强; 欧阳春梅; 路鑫超; 张文涛; 韩家广

    2016-01-01

    Recently, terahertz radiation has been a branch of cutting-edge science and technology involving many fields such as public security, military defense and national economy. In the past, far-field measurements were widely carried out based on terahertz time-domain spectroscopy. But the spatial resolution is limited by far-field diffraction effect. In order to break diffraction limit and gain sub-wavelength spatial resolution in terahertz frequency region, a series of near-field detection methods came into being, such as confocal microscopy, using an aperture, guided mode, scattering, direct detection in the near-field, etc. Each method has its own advantages and disadvantages. Using the photoconductive-antenna tip is one of the direct detection methods and it delivers the possibility of near-field measurements of terahertz waves. In this method, the photoconductive-antenna tip is a tapered photoconductive tip probe. So it can be close enough to the sample surface and receive the near-field signal on the basis of principle of photoconductivity. In this way, high spatial resolution can be gained. In this article, we introduce our recent progress of near-field and far- field scanning terahertz spectroscopy system with photoconductive-antenna in detail. Firstly, we analyze and summarize the near-field detection methods that have been developed in these years. And then, using the femtosecond laser whose center wavelength is 800 nm and the photoconductive-antenna tip detector coupled with fiber, we construct fiber near-field/far-field scanning terahertz spectroscopy (N/F-STS). The frequency bandwidth is in a range from 0.2 THz to 1.5 THz and the terahertz spot is circular and uniform indicated by performance test. Also the amplitude and phase of the terahertz field are recorded simultaneously. It has the ability to perform three-dimension scan in various experiment conditions conveniently. Finally, we introduce the real applications in our laboratory. N/F-STS can be used

  7. 40 CFR Appendix A-4 to Part 60 - Test Methods 6 through 10B

    Science.gov (United States)

    2010-07-01

    ... Analytical Reagents of the American Chemical Society. Where such specifications are not available, use the... Reagents of the American Chemical Society. Where such specifications are not available, use the best... Analysis. American Society for Testing and Materials. Philadelphia, PA. 1974. pp. 40-42. 8. Knoll,...

  8. 40 CFR Appendix W to Part 51 - Guideline on Air Quality Models

    Science.gov (United States)

    2010-07-01

    ....0Bibliography 12.0References Appendix A to Appendix W of 40 CFR Part 51—Summaries of Preferred Air Quality... assessing source impact and in evaluating control strategies. i. Appendix W to 40 CFR Part 51 itself... to Appendix A to Appendix W to 40 CFR Part 51. Appendix A contains summaries of refined air...

  9. Villous adenoma of the distal appendix.

    Science.gov (United States)

    Taylor, J V; Thomas, M G; Kelly, S; Sutton, R

    1997-04-01

    Villous adenoma confined to the distal appendix has not been previously reported in conjunction with acute apendicitis. The presence of an adenoma indicates a need for further investigation due to an association with neoplasia elsewhere.

  10. 40 CFR Appendix A to Subpart A of... - Appendix A to Subpart A of Part 750

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 30 2010-07-01 2010-07-01 false Appendix A to Subpart A of Part 750 A Appendix A to Subpart A of Part 750 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED... ACT Procedures for Rulemaking Under Section 6 of the Toxic Substances Control Act Pt. 750, Subpt....

  11. 40 CFR Appendix I to Subpart B of... - Appendix I to Subpart B of Part 205

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 24 2010-07-01 2010-07-01 false Appendix I to Subpart B of Part 205 I Appendix I to Subpart B of Part 205 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) NOISE ABATEMENT PROGRAMS TRANSPORTATION EQUIPMENT NOISE EMISSION CONTROLS Medium and Heavy Trucks...

  12. 13 CFR Appendix A to Part 112 - Appendix A to Part 112

    Science.gov (United States)

    2010-01-01

    ... development centers Small Business Act, sec. 21 and Pub. L. 96-302. International Trade Program Small Business... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false Appendix A to Part 112 A Appendix A to Part 112 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION NONDISCRIMINATION...

  13. 13 CFR Appendix A to Part 1171 - Appendix A to Part 1171

    Science.gov (United States)

    2010-01-01

    .... International Trade Program Small Business Act, section 22. Technical and Management Assistance Small Business... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false Appendix A to Part 1171 A Appendix A to Part 1171 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION NONDISCRIMINATION...

  14. 49 CFR Appendix to Part 38 - Guidance Material

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 1 2010-10-01 2010-10-01 false Guidance Material Appendix to Part 38... SPECIFICATIONS FOR TRANSPORTATION VEHICLES Pt. 38, App. Appendix to Part 38—Guidance Material This appendix....5. A research project sponsored by the Architectural and Transportation Barriers Compliance...

  15. 40 CFR Appendix B to Part 66 - Instruction Manual

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 15 2010-07-01 2010-07-01 false Instruction Manual B Appendix B to Part 66 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED... Manual Note: For text of appendix B see appendix B to part 67....

  16. 12 CFR Appendixes A-H to Subpart A... - Appendixes A-H to Subpart A of Part 702

    Science.gov (United States)

    2010-01-01

    ... 12 Banks and Banking 6 2010-01-01 2010-01-01 false Appendixes A-H to Subpart A of Part 702 A Appendixes A-H to Subpart A of Part 702 Banks and Banking NATIONAL CREDIT UNION ADMINISTRATION REGULATIONS AFFECTING CREDIT UNIONS PROMPT CORRECTIVE ACTION Net Worth Classification Pt. 702, Apps. Appendixes A-H...

  17. Appendix

    DEFF Research Database (Denmark)

    Friis, Ib; Thulin, Mats

    2009-01-01

    A taxonomic and floristic account of all the additional or new species in Etyhiopia and/or Eritrea that have been discovered while Vols 2 - 7 of the Flora of Ethiopia and Eritrea were being published....

  18. Appendix - A small scale research review

    DEFF Research Database (Denmark)

    Larsen, Lea Lund

     training? This will be illustrated by describing a research design in progress at the National Centre of Competence Development, DK, regarding a program where teachers are taught Cooperative Learning as a pedagogical and didactical method. This appendix concerns the first question. In search for empiric results concerning: What do......A small scale research review This appendix provides an analysis of a small scale search for empirical studies regarding the efficacy of adult teacher training. The appendix is a part of a paper delivered at the ASEM conference, June 2009, Bergisch Gladbach, Germany. The paper tries to shed light...... for systematic reviews in the international This will be identified by a search for systematic reviews in the international clearinghouses and afterwards by a small scale mapping done in the pedagogic databaseERIC. The second question sounds: which methods can be used to measure the effects of teacher...

  19. Appendix to Power Dissipation in Division

    DEFF Research Database (Denmark)

    Liu, Wei; Nannarelli, Alberto

    This document is an appendix to the paper: Wei Liu and Alberto Nannarelli, ”Power Dissipation in Division”, Proc. of 42nd Asilomar Conference on Signals, Systems, and Computers, October 2008. The purpose of the document is to provide the necessary information for the implementation of the archite......This document is an appendix to the paper: Wei Liu and Alberto Nannarelli, ”Power Dissipation in Division”, Proc. of 42nd Asilomar Conference on Signals, Systems, and Computers, October 2008. The purpose of the document is to provide the necessary information for the implementation...

  20. 14 CFR Appendix F to Part 151 - Appendix F to Part 151

    Science.gov (United States)

    2010-01-01

    ...) AIRPORTS FEDERAL AID TO AIRPORTS Pt. 151, App. F Appendix F to Part 151 There is set forth below an.... Transformer or generator vaults. 11. Control panels for field lighting. 12. Control equipment for...

  1. The environmental survey manual: Appendix D

    International Nuclear Information System (INIS)

    The purpose of this manual is to provide guidance to the Survey and Sampling and Analysis teams that conduct the one-time Environmental Survey of the major US Department of Energy operating facilities. This appendix contains procedures for chemical analysis of organics, inorganics, and radioisotopes

  2. Energy 21. Preconditions and results. Appendix

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-03-01

    This appendix comprises the following 5 scenarios: Reference scenario for electricity and district heating supply; Action plan scenario for electricity and district heat supply; Energy balances for reference and action plan scenarios; Investments and operating costs for user installations; Projection of CO{sub 2} emissions from the transport sector. (EG)

  3. 15 CFR 4a.4 - Classification authority.

    Science.gov (United States)

    2010-01-01

    ... 15 Commerce and Foreign Trade 1 2010-01-01 2010-01-01 false Classification authority. 4a.4 Section 4a.4 Commerce and Foreign Trade Office of the Secretary of Commerce CLASSIFICATION, DECLASSIFICATION, AND PUBLIC AVAILABILITY OF NATIONAL SECURITY INFORMATION § 4a.4 Classification authority. Authority...

  4. 22 CFR 9a.4 - Classification.

    Science.gov (United States)

    2010-04-01

    ... State shall follow the standards in E.O. 11652 and the provisions of 22 CFR 9.5 through 9.8. ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Classification. 9a.4 Section 9a.4 Foreign... ENERGY PROGRAMS; RELATED MATERIAL § 9a.4 Classification. (a) Section 1 of E.O. 11932, August 4,...

  5. 12 CFR 261a.4 - Fees.

    Science.gov (United States)

    2010-01-01

    ... 12 Banks and Banking 3 2010-01-01 2010-01-01 false Fees. 261a.4 Section 261a.4 Banks and Banking... TO PERSONAL INFORMATION UNDER THE PRIVACY ACT OF 1974 General Provisions § 261a.4 Fees. (a) Copies of... Availability of Information, § 261.10 of this part. (b) No fee. Documents may be furnished without charge...

  6. 12 CFR 269a.4 - Investigator.

    Science.gov (United States)

    2010-01-01

    ... 12 Banks and Banking 3 2010-01-01 2010-01-01 false Investigator. 269a.4 Section 269a.4 Banks and Banking FEDERAL RESERVE SYSTEM (CONTINUED) BOARD OF GOVERNORS OF THE FEDERAL RESERVE SYSTEM DEFINITIONS § 269a.4 Investigator. The term investigator means the officer designated by the panel to investigate...

  7. 32 CFR 383a.4 - Organization.

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 2 2010-07-01 2010-07-01 false Organization. 383a.4 Section 383a.4 National Defense Department of Defense (Continued) OFFICE OF THE SECRETARY OF DEFENSE (CONTINUED) ORGANIZATIONAL CHARTERS DEFENSE COMMISSARY AGENCY (DeCA) § 383a.4 Organization. (a) The DeCA is established as an...

  8. TORSION OF THE VERMIFORM APPENDIX: A CASE REPORT

    Directory of Open Access Journals (Sweden)

    Dr. Imtiaz Wani

    2009-07-01

    Full Text Available Torsion of the vermiform appendix is a rare condition with few cases reported in the literature. Various factors predispose to torsion. Various factors predispose to torsion. We report a case of primary torsion of the vermiform appendix. The clinical presentation was indistinguishable from acute appendicitis and the diagnosis was made at operation. Appendix was preileal in position and the direction of torsion was anticlockwise. There was intrinsic torsion with no obvious factor for torsion identified. Appendectomy was performed.

  9. CT appearance of the normal appendix in adults

    Energy Technology Data Exchange (ETDEWEB)

    Tamburrini, Stefania [Universita' di Napoli Federico II, Dip. Sc. Biomorfologiche e Funzionali, Naples (Italy); UCSD Medical Center, Department of Radiology, San Diego, CA (United States); Brunetti, Arturo [Universita' di Napoli Federico II, Dip. Sc. Biomorfologiche e Funzionali, Naples (Italy); Brown, Michele; Sirlin, Claude B.; Casola, Giovanna [UCSD Medical Center, Department of Radiology, San Diego, CA (United States)

    2005-10-01

    The aims of this study were to identify (1) the normal range of the appendix on computed tomography (CT), (2) the correlation of patient age and sex with the visibility and appearance of the appendix on CT, and (3) the normal variations in wall thickness, intraluminal content, and location of the appendix. Three hundred seventy-two outpatients underwent abdominopelvic CT. The scans were reviewed on the picture archiving and communication system and appendiceal outer-to-outer wall diameter, wall thickness, location, content and its correlation with appendix diameter were analyzed. The appendix was visualized in 305/372 patients. Its location relative to the cecum was highly variable. The diameter range was 3-10 mm; in 42% of cases the diameter was greater than 6 mm. When the intraluminal content (185/305) was visualized, the diameter was slightly superior to the mean (p=0.0156). In 329 CT scans in which oral contrast material was given, the appendix was filled by contrast material in 74/329 patients. The appendix wall thickness was measurable in 22/305 patients (average 0.15 cm). There is significant overlap between the normal and abnormal CT appearance of the appendix. Consequently the diagnosis of acute appendicitis should be based not only on the appearance of the appendix but also on the presence of secondary signs. (orig.)

  10. CT appearance of the normal appendix in adults

    International Nuclear Information System (INIS)

    The aims of this study were to identify (1) the normal range of the appendix on computed tomography (CT), (2) the correlation of patient age and sex with the visibility and appearance of the appendix on CT, and (3) the normal variations in wall thickness, intraluminal content, and location of the appendix. Three hundred seventy-two outpatients underwent abdominopelvic CT. The scans were reviewed on the picture archiving and communication system and appendiceal outer-to-outer wall diameter, wall thickness, location, content and its correlation with appendix diameter were analyzed. The appendix was visualized in 305/372 patients. Its location relative to the cecum was highly variable. The diameter range was 3-10 mm; in 42% of cases the diameter was greater than 6 mm. When the intraluminal content (185/305) was visualized, the diameter was slightly superior to the mean (p=0.0156). In 329 CT scans in which oral contrast material was given, the appendix was filled by contrast material in 74/329 patients. The appendix wall thickness was measurable in 22/305 patients (average 0.15 cm). There is significant overlap between the normal and abnormal CT appearance of the appendix. Consequently the diagnosis of acute appendicitis should be based not only on the appearance of the appendix but also on the presence of secondary signs. (orig.)

  11. Carcinoid of the Appendix During Laparoscopic Cholecystectomy: Unexpected Benefits

    Science.gov (United States)

    Haluck, Randy; Cooney, Robert N.; Minnick, Kathleen E.; Ruggiero, Francesco; Smith, J. Stanley

    1999-01-01

    Carcinoid tumors of the midgut arise from the distal duodenum, jejunum, ileum, appendix, ascending and right transverse colon. The appendix and terminal ileum are the most common location. The majority of carcinoid tumors originate from neuroendocrine cells along the gastrointestinal tract, but they are also found in the lung, ovary, and biliary tracts. We report the first case of elective laparoscopic cholecystectomy in which we found a suspicious lesion at the tip of the appendix and proceeded to perform a laparoscopic appendectomy. The lesion revealed a carcinoid tumor of the appendix. PMID:10323177

  12. Goblet cell carcinoid of the appendix

    Directory of Open Access Journals (Sweden)

    Pahlavan Payam S

    2005-06-01

    Full Text Available Abstract Background Goblet cell carcinoid (GCC of the appendix is a rare neoplasm that share histological features of both adenocarcinoma and carcinoid tumor. While its malignant potential remains unclear, GCC's are more aggressive than conventional carcinoid. The clinical presentations of this neoplasm are also varied. This review summarizes the published literature on GCC of the appendix. The focus is on its diagnosis, histopathological aspects, clinical manifestations, and management. Methods Published studies in the English language between 1966 to 2004 were identified through Medline keyword search utilizing terms "goblet cell carcinoid," "adenocarcinoid", "mucinous carcinoid" and "crypt cell carcinoma" of the appendix. Results Based on the review of 57 published papers encompassing nearly 600 diagnosed patients, the mean age of presentation for GCC of the appendix was 58.89 years with equal representation in both males and females. Accurate diagnosis of this neoplasm requires astute observations within an acutely inflamed appendix as this neoplasm has a prominent pattern of submucosal growth and usually lacks the formation of a well-defined tumor mass. The mesoappendix was involved in 21.64% followed by perineural involvement in 2.06%. The most common clinical presentations in order of frequency were acute appendicitis in 22.5%; asymptomatic in 5.4%; non-localized abdominal pain in 5.15% and an appendicular mass in 3.09%. The most common surgical treatment of choice was appendectomy with right hemicolectomy in 34.70% followed by simple appendectomy in 24.57%. Concomitant distant metastasis at diagnosis was present in 11.16% of patients with the ovaries being the most common site in 3.60% followed by disseminated abdominal carcinomatosis in 1.03%. Local lymph node involvement was seen in 8.76% of patients at the time of diagnosis. The reported 5-year survival ranges from 60 % to 84%. GCC's of the appendix remains a neoplasm of unpredictable

  13. Crohn's disease limited to the vermiform appendix

    DEFF Research Database (Denmark)

    Bak, Martin; Andersen, J C

    1987-01-01

    Thirteen cases of Crohn's disease confined to the vermiform appendix were seen during a 12-year period. They constituted 16.9% of patients with primary resection of the bowel for Crohn's disease in the same period, but only 0.4% of the cases of acute appendicitis. In 10 of the 13 cases...... to approach that of recurrence after resection in other parts of the intestines. Collective review of this and three other relatively large case series gave an estimated recurrence rate of 3.5%. We conclude that in Crohn's disease initially confined to the appendix the course appears to be indolent....... there was marked fibrous thickening of the appendiceal wall, and in 11 there were epithelioid cell granulomas. Appendectomy was performed in all cases. None had postoperative fistula or later manifestations of the disease within the observation time averaging 6.3 years. The recurrence rate was previously believed...

  14. Appendix B - GPRA06 biomass program documentation

    Energy Technology Data Exchange (ETDEWEB)

    None, None

    2009-01-18

    This appendix discusses the assumptions and methods employed in the biomass benefits analysis that is part of the fiscal year 2006 GPRA benefits analysis for all of the Department of Energy’s Energy Efficiency and Renewable Energy (EERE) research and deployment programs. The biomass benefits analysis focuses on the benefits of future achievements by the program and excludes retrospective benefits and benefits resulting from industry’s own initiative and funding.

  15. Online Appendix to Efficient Timing of Retirement

    OpenAIRE

    Geoffrey H. Kingston

    2001-01-01

    Post-retirement, the model in the main text (published in the Review of Economic Dynamics) reduces to the Merton (1969) problem, which has of course an exact solution. Pre-retirement, however, the agent holds an American option, namely, retire now or keep working. Problems involving American options are generally difficult to solve exactly. This appendix describes an approximate solution to the agent's pre-retirement problem.

  16. 49 CFR Appendix C to Part 236 - Safety Assurance Criteria and Processes

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Safety Assurance Criteria and Processes C Appendix... Pt. 236, App. C Appendix C to Part 236—Safety Assurance Criteria and Processes (a) What is the purpose of this appendix? This appendix provides safety criteria and processes that the designer must...

  17. 14 CFR Appendix H to Part 121 - Advanced Simulation

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Advanced Simulation H Appendix H to Part... Simulation This appendix provides guidelines and a means for achieving flightcrew training in advanced... simulator, as appropriate. Advanced Simulation Training Program For an operator to conduct Level C or...

  18. Significance of acquired diverticular disease of the vermiform appendix

    DEFF Research Database (Denmark)

    Kallenbach, Klaus; Hjorth, Sofie Vetli; Engel, Ulla;

    2012-01-01

    To assess the prevalence of acquired diverticulum of the appendix (DA), including incipient forms and its possible significance as a marker of local/regional neoplasms.......To assess the prevalence of acquired diverticulum of the appendix (DA), including incipient forms and its possible significance as a marker of local/regional neoplasms....

  19. 31 CFR Appendix C to Part 356 - Investment Considerations

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 2 2010-07-01 2010-07-01 false Investment Considerations C Appendix...) Pt. 356, App. C Appendix C to Part 356—Investment Considerations I. Inflation-Protected Securities A. Principal and Interest Variability An investment in securities with principal or interest determined...

  20. 31 CFR Appendix C to Part 359 - Investment Considerations

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 2 2010-07-01 2010-07-01 false Investment Considerations C Appendix C to Part 359 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued... BONDS, SERIES I Pt. 359, App. C Appendix C to Part 359—Investment Considerations 1. What are some...

  1. 32 CFR Appendix C to Part 806 - Terms

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 6 2010-07-01 2010-07-01 false Terms C Appendix C to Part 806 National Defense Department of Defense (Continued) DEPARTMENT OF THE AIR FORCE ADMINISTRATION AIR FORCE FREEDOM OF INFORMATION ACT PROGRAM Pt. 806, App. C Appendix C to Part 806—Terms Appellate Authority—The Office of the...

  2. 49 CFR Appendix F to Part 222 - Diagnostic Team Considerations

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Diagnostic Team Considerations F Appendix F to.... 222, App. F Appendix F to Part 222—Diagnostic Team Considerations For purposes of this part, a diagnostic team is a group of knowledgeable representatives of parties of interest in a highway-rail...

  3. 40 CFR Appendix A to Part 63 - Test Methods

    Science.gov (United States)

    2010-07-01

    ....2.1A clearly written test method, preferably in the format of 40 CFR part 60, appendix A Test... reference from other methods in appendix A to 40 CFR part 60. Therefore, to obtain reliable results, persons... certification runs for charging (i.e., 15 charges). The certifications runs shall be unassisted. Following...

  4. 29 CFR Appendix A to Subpart P of... - Soil Classification

    Science.gov (United States)

    2010-07-01

    ... 29 Labor 8 2010-07-01 2010-07-01 false Soil Classification A Appendix A to Subpart P of Part 1926..., App. A Appendix A to Subpart P of Part 1926—Soil Classification (a) Scope and application—(1) Scope... § 1926.652(c), and the use of the data is predicated on the use of the soil classification system...

  5. 14 CFR Appendix C to Part 43 - [Reserved

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false C Appendix C to Part 43 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT MAINTENANCE, PREVENTIVE MAINTENANCE, REBUILDING, AND ALTERATION Appendix C to Part 43...

  6. 14 CFR Appendix A to Part 147 - Curriculum Requirements

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Curriculum Requirements A Appendix A to Part 147 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) SCHOOLS AND OTHER CERTIFICATED AGENCIES AVIATION MAINTENANCE TECHNICIAN SCHOOLS Pt. 147, App. A Appendix...

  7. 49 CFR Appendix C to Part 599 - Electronic Transaction Screen

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 7 2010-10-01 2010-10-01 false Electronic Transaction Screen C Appendix C to Part 599 Transportation Other Regulations Relating to Transportation (Continued) NATIONAL HIGHWAY TRAFFIC... ASSISTANCE TO RECYCLE AND SAVE ACT PROGRAM Pt. 599, App. C Appendix C to Part 599—Electronic...

  8. 40 CFR Appendixes Vi-Vii to Part 600 - [Reserved

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 29 2010-07-01 2010-07-01 false VI Appendixes VI-VII to Part 600 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) ENERGY POLICY FUEL ECONOMY AND CARBON-RELATED EXHAUST EMISSIONS OF MOTOR VEHICLES Appendixes VI-VII to Part 600...

  9. 40 CFR Appendixes Vii-Viii to Part... - [Reserved

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 25 2010-07-01 2010-07-01 false VII Appendixes VII-VIII to Part 264 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) SOLID WASTES (CONTINUED) STANDARDS FOR OWNERS AND OPERATORS OF HAZARDOUS WASTE TREATMENT, STORAGE, AND DISPOSAL FACILITIES Appendixes...

  10. 14 CFR Appendix B to Part 147 - General Curriculum Subjects

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false General Curriculum Subjects B Appendix B to Part 147 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) SCHOOLS AND OTHER CERTIFICATED AGENCIES AVIATION MAINTENANCE TECHNICIAN SCHOOLS Pt. 147, App. B Appendix...

  11. 40 CFR Appendix V to Part 1039 - [Reserved

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 32 2010-07-01 2010-07-01 false V Appendix V to Part 1039 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR POLLUTION CONTROLS CONTROL OF EMISSIONS FROM NEW AND IN-USE NONROAD COMPRESSION-IGNITION ENGINES Appendix V to Part 1039...

  12. 34 CFR Appendix A to Part 300 - Excess Costs Calculation

    Science.gov (United States)

    2010-07-01

    ... 34 Education 2 2010-07-01 2010-07-01 false Excess Costs Calculation A Appendix A to Part 300 Education Regulations of the Offices of the Department of Education (Continued) OFFICE OF SPECIAL EDUCATION... CHILDREN WITH DISABILITIES Pt. 300, App. A Appendix A to Part 300—Excess Costs Calculation Except...

  13. 34 CFR Appendix B to Part 300 - Proportionate Share Calculation

    Science.gov (United States)

    2010-07-01

    ... 34 Education 2 2010-07-01 2010-07-01 false Proportionate Share Calculation B Appendix B to Part... CHILDREN WITH DISABILITIES Pt. 300, App. B Appendix B to Part 300—Proportionate Share Calculation Each LEA... early intervening activities in § 300.226). The following outlines the calculations for the example...

  14. 32 CFR Appendix B to Part 275 - Obtaining Customer Authorization

    Science.gov (United States)

    2010-07-01

    ... required by 32 CFR part 310 for a personnel security investigation. C. Any customer's authorization not... 32 National Defense 2 2010-07-01 2010-07-01 false Obtaining Customer Authorization B Appendix B to... OF 1978 Pt. 275, App. B Appendix B to Part 275—Obtaining Customer Authorization A. A DoD...

  15. 14 CFR Appendix C to Part 420 - Risk Analysis

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 4 2010-01-01 2010-01-01 false Risk Analysis C Appendix C to Part 420... TRANSPORTATION LICENSING LICENSE TO OPERATE A LAUNCH SITE Pt. 420, App. C Appendix C to Part 420—Risk Analysis (a... risk is minimal. (2) An applicant shall perform a risk analysis when a populated area is located...

  16. 32 CFR Appendix C to Part 45 - DD Form 215

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 1 2010-07-01 2010-07-01 false DD Form 215 C Appendix C to Part 45 National... CERTIFICATE OF RELEASE OR DISCHARGE FROM ACTIVE DUTY (DD FORM 214/5 SERIES) Pt. 45, App. C Appendix C to Part 45—DD Form 215 EC21OC91.050...

  17. 7 CFR Appendix B to Part 226 - [Reserved

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 4 2010-01-01 2010-01-01 false B Appendix B to Part 226 Agriculture Regulations of the Department of Agriculture (Continued) FOOD AND NUTRITION SERVICE, DEPARTMENT OF AGRICULTURE CHILD NUTRITION PROGRAMS CHILD AND ADULT CARE FOOD PROGRAM Appendix B to Part 226...

  18. 50 CFR Appendix B to Part 404 - Approved VMS

    Science.gov (United States)

    2010-10-01

    ... 50 Wildlife and Fisheries 7 2010-10-01 2010-10-01 false Approved VMS B Appendix B to Part 404... MARINE NATIONAL MONUMENT Pt. 404, App. B Appendix B to Part 404—Approved VMS I. VMS Mobile Transceiver Unit Thrane & Thrane Sailor 3026D Gold VMS The Thrane & Thrane Sailor 3026D Gold VMS (TT-3026D)...

  19. 32 CFR Appendix A to Part 505 - References

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 3 2010-07-01 2010-07-01 true References A Appendix A to Part 505 National Defense Department of Defense (Continued) DEPARTMENT OF THE ARMY AID OF CIVIL AUTHORITIES AND PUBLIC RELATIONS ARMY PRIVACY ACT PROGRAM Pt. 505, App. A Appendix A to Part 505—References (a) The Privacy Act...

  20. 32 CFR Appendix A to Part 516 - References

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 3 2010-07-01 2010-07-01 true References A Appendix A to Part 516 National Defense Department of Defense (Continued) DEPARTMENT OF THE ARMY AID OF CIVIL AUTHORITIES AND PUBLIC RELATIONS LITIGATION Pt. 516, App. A Appendix A to Part 516—References Publications referenced in this...

  1. 32 CFR Appendix A to Part 513 - References

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 3 2010-07-01 2010-07-01 true References A Appendix A to Part 513 National Defense Department of Defense (Continued) DEPARTMENT OF THE ARMY AID OF CIVIL AUTHORITIES AND PUBLIC RELATIONS INDEBTEDNESS OF MILITARY PERSONNEL Pt. 513, App. A Appendix A to Part 513—References Section...

  2. 32 CFR Appendix B to Part 516 - Mailing Addresses

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 3 2010-07-01 2010-07-01 true Mailing Addresses B Appendix B to Part 516 National Defense Department of Defense (Continued) DEPARTMENT OF THE ARMY AID OF CIVIL AUTHORITIES AND PUBLIC RELATIONS LITIGATION Pt. 516, App. B Appendix B to Part 516—Mailing Addresses The following is...

  3. 49 CFR Appendix B to Part 194 - High Volume Areas

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 3 2010-10-01 2010-10-01 false High Volume Areas B Appendix B to Part 194... Pt. 194, App. B Appendix B to Part 194—High Volume Areas As of January 5, 1993 the following areas are high volume areas: Major rivers Nearest town and state Arkansas River N. Little Rock, AR....

  4. 31 CFR Appendix to Part 341 - Tables of Redemption Values

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 2 2010-07-01 2010-07-01 false Tables of Redemption Values Appendix... RETIREMENT PLAN BONDS Pt. 341, App. Appendix to Part 341—Tables of Redemption Values Table of Redemption Values Providing an Investment Yield of 33/4 Percent per Annum for Bonds Bearing Issue Dates...

  5. 16 CFR Appendix E to Part 305 - Room Air Conditioners

    Science.gov (United States)

    2010-01-01

    ... 16 Commercial Practices 1 2010-01-01 2010-01-01 false Room Air Conditioners E Appendix E to Part... Appendix E to Part 305—Room Air Conditioners Range Information Manufacturer's rated cooling capacity in Btu... CONCERNING DISCLOSURES REGARDING ENERGY CONSUMPTION AND WATER USE OF CERTAIN HOME APPLIANCES AND...

  6. 40 CFR Appendixes I-Vii to Part 85 - [Reserved

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 18 2010-07-01 2010-07-01 false I Appendixes I-VII to Part 85 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) CONTROL OF AIR POLLUTION FROM MOBILE SOURCES Appendixes I-VII to Part 85...

  7. 17 CFR Appendix A to Part 160 - Model Privacy Form

    Science.gov (United States)

    2010-04-01

    ... 17 Commodity and Securities Exchanges 1 2010-04-01 2010-04-01 false Model Privacy Form A Appendix A to Part 160 Commodity and Securities Exchanges COMMODITY FUTURES TRADING COMMISSION PRIVACY OF CONSUMER FINANCIAL INFORMATION Pt. 160, App. A Appendix A to Part 160—Model Privacy Form A. The...

  8. 10 CFR Appendix A to Part 436... - [Reserved

    Science.gov (United States)

    2010-01-01

    ... 10 Energy 3 2010-01-01 2010-01-01 false A Appendix A to Part 436-Energy Conservation Standards for General Operations Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION FEDERAL ENERGY MANAGEMENT AND PLANNING PROGRAMS Appendix A to Part 436—Energy Conservation Standards for General Operations...

  9. 25 CFR Appendix B to Part 276 - Financial Reporting Requirements

    Science.gov (United States)

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false Financial Reporting Requirements B Appendix B to Part 276...—Financial Reporting Requirements A. Purpose and scope. This appendix prescribes requirements for grantee to report financial information to the Bureau and to request advances and reimbursement when a...

  10. 40 CFR Appendix B to Part 67 - Instruction Manual

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 15 2010-07-01 2010-07-01 false Instruction Manual B Appendix B to Part 67 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED... Manual Note: EPA will make copies of appendix B available from: Director, Stationary Source...

  11. 31 CFR Appendix to Part 19 - Covered Transactions

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 1 2010-07-01 2010-07-01 false Covered Transactions Appendix to Part 19 Money and Finance: Treasury Office of the Secretary of the Treasury GOVERNMENTWIDE DEBARMENT AND SUSPENSION (NONPROCUREMENT) Pt. 19, App. Appendix to Part 19—Covered Transactions ER26NO03.000...

  12. 46 CFR Appendix IV to Part 150 - Data Sheet

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Data Sheet IV Appendix IV to Part 150 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES COMPATIBILITY OF CARGOES Pt. 150, App. IV Appendix IV to Part 150—Data Sheet EC02FE91.080 EC02FE91.081...

  13. 34 CFR Appendix to Part 85 - Covered Transactions

    Science.gov (United States)

    2010-07-01

    ... 34 Education 1 2010-07-01 2010-07-01 false Covered Transactions Appendix to Part 85 Education Office of the Secretary, Department of Education GOVERNMENTWIDE DEBARMENT AND SUSPENSION (NONPROCUREMENT) Pt. 85, App. Appendix to Part 85—Covered Transactions ER26NO03.001...

  14. 21 CFR Appendix to Part 1404 - Covered Transactions

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 9 2010-04-01 2010-04-01 false Covered Transactions Appendix to Part 1404 Food and Drugs OFFICE OF NATIONAL DRUG CONTROL POLICY GOVERNMENTWIDE DEBARMENT AND SUSPENSION (NONPROCUREMENT) Pt. 1404, App. Appendix to Part 1404—Covered Transactions ER26NO03.000...

  15. Pathways for School Finance in California. Technical Appendix

    Science.gov (United States)

    Rose, Heather; Sonstelie, Jon; Weston, Margaret

    2010-01-01

    This is a technical appendix for the report, "Pathways for School Finance in California" (ED515651). "Pathways for School Finance in California" simulates alternatives to California's current school finance system. This appendix provides more information about the revenues used in those simulations. The first section describes the districts and…

  16. 32 CFR Appendix C to Part 282 - Submitting a Claim

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 2 2010-07-01 2010-07-01 false Submitting a Claim C Appendix C to Part 282.... 282, App. C Appendix C to Part 282—Submitting a Claim (a) Who May Submit a Claim. Any person (“claimant”) may submit a claim who has a demand for money or property against the Government under 31...

  17. 50 CFR Appendix A to Part 654 - Figures

    Science.gov (United States)

    2010-10-01

    ... 50 Wildlife and Fisheries 8 2010-10-01 2010-10-01 false Figures A Appendix A to Part 654 Wildlife and Fisheries FISHERY CONSERVATION AND MANAGEMENT, NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE STONE CRAB FISHERY OF THE GULF OF MEXICO Pt. 654, App. A Appendix A to Part...

  18. Exposition concerning small windmills. Appendix to main report. Volume 1

    International Nuclear Information System (INIS)

    This appendix to the main report entitled ''Exposition Concerning Small Windmills'' includes background information on the report, profiles of the participating companies and of those visited in Denmark and abroad, questionnaires and interview schemes sent to the participating companies, surveys of producers of Danish and foreign producers of small windmills and an appendix to the economical calculations found within the report. (AB)

  19. 31 CFR Appendix A to Part 500 - Qualifying International Institutions

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Qualifying International Institutions A Appendix A to Part 500 Money and Finance: Treasury Regulations Relating to Money and Finance... Pt. 500, App. A Appendix A to Part 500—Qualifying International Institutions Asian Development...

  20. 49 CFR Appendix A to Part 178 - Specifications for Steel

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 2 2010-10-01 2010-10-01 false Specifications for Steel A Appendix A to Part 178.... 178, App. A Appendix A to Part 178—Specifications for Steel Table 1 Designation Chemical composition... ladle analysis may be 1.40 percent. 6 Rephosphorized Grade 3 steels containing no more than 0.15...

  1. 23 CFR Appendix A to Part 1340 - Sample Design

    Science.gov (United States)

    2010-04-01

    ... OBSERVATIONAL SURVEYS OF SEAT BELT USE Pt. 1340, App. A Appendix A to Part 1340—Sample Design Following is a description of a sample design that meets the final survey guidelines and, based upon NHTSA's experience in... 23 Highways 1 2010-04-01 2010-04-01 false Sample Design A Appendix A to Part 1340...

  2. 48 CFR Appendix to Part 1252 - Tar Matrix

    Science.gov (United States)

    2010-10-01

    ... 48 Federal Acquisition Regulations System 5 2010-10-01 2010-10-01 false Tar Matrix Appendix to Part 1252 Federal Acquisition Regulations System DEPARTMENT OF TRANSPORTATION CLAUSES AND FORMS SOLICITATION PROVISIONS AND CONTRACT CLAUSES Pt. 1252, App. Appendix to Part 1252—Tar Matrix...

  3. 40 CFR Appendix A to Subpart C of... - References

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 5 2010-07-01 2010-07-01 false References A Appendix A to Subpart C of...) AMBIENT AIR MONITORING REFERENCE AND EQUIVALENT METHODS Procedures for Determining Comparability Between Candidate Methods and Reference Methods Pt. 53, Subpt. C, App. A Appendix A to Subpart C of Part...

  4. 40 CFR Appendix A to Subpart A of... - References

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 5 2010-07-01 2010-07-01 false References A Appendix A to Subpart A of...) AMBIENT AIR MONITORING REFERENCE AND EQUIVALENT METHODS General Provisions Pt. 53, Subpt. A, App. A Appendix A to Subpart A of Part 53—References (1) American National Standard Quality Systems—Model...

  5. 10 CFR Appendix B to Part 600 - Audit Report Distributees

    Science.gov (United States)

    2010-01-01

    ... 10 Energy 4 2010-01-01 2010-01-01 false Audit Report Distributees B Appendix B to Part 600 Energy DEPARTMENT OF ENERGY (CONTINUED) ASSISTANCE REGULATIONS FINANCIAL ASSISTANCE RULES Pt. 600, App. B Appendix B to Part 600—Audit Report Distributees Distributee: Manager, Eastern Region, Office of...

  6. 40 CFR Appendix II to Part 86 - Temperature Schedules

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 19 2010-07-01 2010-07-01 false Temperature Schedules II Appendix II... Appendix II to Part 86—Temperature Schedules (a) Ambient temperature cycle for the diurnal emission portion of the evaporative emission test (see § 86.133). Table I—Temperature Versus Time Sequence Use...

  7. 32 CFR Appendix B to Part 282 - Claims Description

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 2 2010-07-01 2010-07-01 false Claims Description B Appendix B to Part 282 National Defense Department of Defense (Continued) OFFICE OF THE SECRETARY OF DEFENSE (CONTINUED.... 282, App. B Appendix B to Part 282—Claims Description The Secretary of Defense is authorized...

  8. 29 CFR Appendix A to Part 4011 - Model Participant Notice

    Science.gov (United States)

    2010-07-01

    ... 29 Labor 9 2010-07-01 2010-07-01 false Model Participant Notice A Appendix A to Part 4011 Labor... DISCLOSURE REQUIREMENTS DISCLOSURE TO PARTICIPANTS Pt. 4011, App. A Appendix A to Part 4011—Model Participant..., the Internal Revenue Service may grant a funding waiver that permits the company to...

  9. 45 CFR Appendix C to Part 5b... - [Reserved

    Science.gov (United States)

    2010-10-01

    ... 45 Public Welfare 1 2010-10-01 2010-10-01 false C Appendix C to Part 5b-Delegations of Authority Public Welfare DEPARTMENT OF HEALTH AND HUMAN SERVICES GENERAL ADMINISTRATION PRIVACY ACT REGULATIONS Appendix C to Part 5b—Delegations of Authority...

  10. 17 CFR Appendix A to Subpart A of... - Appendix A to Subpart A of Part 248 Forms

    Science.gov (United States)

    2010-04-01

    ... under this part, must comply with section 624 of the FCRA and 17 CFR part 248, subpart B, with respect... 17 Commodity and Securities Exchanges 3 2010-04-01 2010-04-01 false Appendix A to Subpart A of Part 248 Forms A Appendix A to Subpart A of Part 248 Forms Commodity and Securities...

  11. VistA 4 Product Roadmap

    Data.gov (United States)

    Department of Veterans Affairs — The VistA 4 Product Roadmap outlines how the Department of Veterans Affairs (VA), under the direction of the VistA Evolution Program, will build upon the previous...

  12. Improved electrical efficiency and bottom ash quality on waste combustion plants. Appendix A4 to A6

    Energy Technology Data Exchange (ETDEWEB)

    Kloeft, H.; Jensen, Peter A.; Nesterov, I.; Hyks, J.; Astrup, T. (Technical Univ. of Denmark, Kgs. Lyngby (Denmark)); Mogensen, Erhardt (Babcock and Wilcox Voelund A/S, Glostrup (Denmark))

    2010-07-01

    Investigations making it possible to evaluate and further develop concepts to improve electrical efficiency in a waste combustion plant were performed. Furthermore, one objective of the study was to investigate the possibilities of improving waste bottom ash leaching properties by use of a rotary kiln treatment. The project work included construction of a bench-scale rotary kiln, performing ash rotary kiln treatment experiments, conducting gas suction probe measurements on a waste incineration plant and making some concept evaluations. The influence of the rotary kiln thermal treatment on the leaching of Ca, Al, Si, Mg, Ba, Sr, Cl, Cu, Pb, Zn, Cr, Mo, sulfate, DOC and carbonate was determined. As a result of these tests, the rotary kiln thermal treatment of bottom ashes can be recommended for reducing the leaching of Cu, Pb, Cl, Zn and DOC; however, an increased leaching of Cr and Mo should be expected. The combustion conditions above the grate of a waste incineration plant were investigated and the release and concentration of volatile ash species in the flue gas such as Cl, Na, K, Ca, Pb, Zn and S were measured. The conducted measurements show that flue gas from grate sections 3 and 4 can produce a sufficiently hot flue gas that contains only low concentrations of corrosive species, and therefore can be used to increase superheater temperatures. Implementation of the so-called flue gas split concept together with other steam circle modifications on a waste combustion plant, and using a reasonable increase in final steam temperature from 400 to 500 deg. C, have the potential to increase electrical efficiency from 24 to 30% (with respect to lower fuel heating value) in a waste combustion plant. The appendices deal with collection of slags for the rotary kiln experiments; overview of the thermal treatment experiments - phase 1; a journal paper with the title ''Quantification of leaching from waste incineration bottom ash treated in a rotary kiln''. (Author)

  13. 7 CFR Appendix 2 to Part 799 - Form FSA-929

    Science.gov (United States)

    2010-01-01

    ... ENVIRONMENTAL PROTECTION ENVIRONMENTAL QUALITY AND RELATED ENVIRONMENTAL CONCERNS-COMPLIANCE WITH THE NATIONAL ENVIRONMENTAL POLICY ACT Pt. 799, App. 2 Appendix 2 to Part 799—Form FSA-929 EC19SE91.001...

  14. 40 CFR Appendix A to Part 423 - 126 Priority Pollutants

    Science.gov (United States)

    2010-07-01

    ... STANDARDS STEAM ELECTRIC POWER GENERATING POINT SOURCE CATEGORY Pt. 423, App. A Appendix A to Part 423—126...-bromophenyl phenyl ether 042Bis(2-chloroisopropyl) ether 043Bis(2-chloroethoxy) methane 044Methylene...

  15. 43 CFR Appendix B to Part 2 - Internet Addresses

    Science.gov (United States)

    2010-10-01

    ... Regulations (43 CFR, Part 2, Subparts A and B): http://www.doi.gov/foia/foiaregs.html 7. DOI FOIA Policy and... 43 Public Lands: Interior 1 2010-10-01 2010-10-01 false Internet Addresses B Appendix B to Part 2... INFORMATION ACT Pt. 2, App. B Appendix B to Part 2—Internet Addresses 1. Department of the Interior (DOI)...

  16. 32 CFR Appendix A to Part 45 - DD Form 214

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 1 2010-07-01 2010-07-01 false DD Form 214 A Appendix A to Part 45 National... CERTIFICATE OF RELEASE OR DISCHARGE FROM ACTIVE DUTY (DD FORM 214/5 SERIES) Pt. 45, App. A Appendix A to Part 45—DD Form 214 EC23OC91.003 EC23OC91.004 EC23OC91.005 EC23OC91.006...

  17. 50 CFR 23.90 - What are the criteria for listing species in Appendix III?

    Science.gov (United States)

    2010-10-01

    ... ENDANGERED SPECIES OF WILD FAUNA AND FLORA (CITES) Lists of Species § 23.90 What are the criteria for listing... concern. (g) Transferring a species from Appendix III to Appendix I or II. If, after monitoring the...

  18. 7 CFR Appendix A to Subpart E of... - Hazard Potential Classification for Civil Works Projects

    Science.gov (United States)

    2010-01-01

    ... AND DESIGN POLICIES AND PROCEDURES Electric System Design Pt. 1724, Subpt. E, App. A Appendix A to... appendix is U.S. Army Corps of Engineers Engineering and Design Dam Safety Assurance Program, ER...

  19. Appendix: proof of the Uniformity Conjecture

    CERN Document Server

    Baldassarri, Francesco

    2011-01-01

    This paper originated as an appendix to the paper "Topology and Geometry of the Berkovich Ramification Locus for Rational Functions, II" by Xander Faber arXiv:1104.0943v2 [math.NT]. It may however be read independently. We prove a variant of the p-adic Rolle theorem, via the theory of the radius of convergence of p-adic connections and the theory of semistable reduction of p-adic curves. We carefully compare the present author's notion [Inv. Math. 182 (2010)] of radius of convergence, of a connection on a p-adic curve X, normalized by the choice of a semistable model of X, with Kedlaya's intrinsic generic radius of convergence of a differential module [Def. 9.4.7 in p-adic Differential Equations, Cambridge Studies in Adv. Math., vol. 125 (2010)].

  20. Incarcerated appendix in a Spigelian hernia

    Directory of Open Access Journals (Sweden)

    Caroline Reinke

    2010-12-01

    Full Text Available Spigelian hernias are rare, making up only 1-2% of all hernias. Like other hernias, they may contain abdominal contents but are more likely to be incarcerated due to the small size of the fascial defect.(1 We describe here the case of a 71-year-old female with a 10-year history of right lower quadrant pain that remained undiagnosed despite multiple imaging studies. Prior to presentation the patient developed a new bulge and increasing pain at this site; an ultrasound revealed the presence of a bowel-containing hernia. The patient was taken urgently to the operating room for a laparoscopic Spigelian hernia repair, and was found to have an incarcerated appendix in the hernia. After the hernia was reduced, an appendectomy was performed and the hernia was repaired with biological mesh. Postoperatively, the patient did well, and her pain resolved.

  1. 5 CFR Appendix A to Subpart F of... - Recommended Language for Court Orders Dividing Employee Annuities

    Science.gov (United States)

    2010-01-01

    ... in this appendix. The model language in this appendix does not award a benefit that is payable after... 5 Administrative Personnel 2 2010-01-01 2010-01-01 false Recommended Language for Court Orders... Pt. 838, Subpt. F, App. A Appendix A to Subpart F of Part 838—Recommended Language for Court...

  2. 31 CFR Appendix H to Subpart C of... - United States Mint

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 1 2010-07-01 2010-07-01 false United States Mint H Appendix H to... RECORDS Privacy Act Pt. 1, Subpt. C, App. H Appendix H to Subpart C of Part 1—United States Mint 1. In general. This appendix applies to the United States Mint. It sets forth specific notification and...

  3. Adult Education Literacy Instruction. Appendix: Tables of Studies Included in the Review

    Science.gov (United States)

    National Institute for Literacy, 2010

    2010-01-01

    Included here are two appendixes to "Adult Education Literacy Instruction: A Review of the Research." Appendix A, "Adult Studies," contains: (1) Assessment Profiles; (2) Alphabetics; (3) Fluency; (4) Vocabulary; and (5) Comprehension. Appendix B, "Adolescent Studies," contains: (1) Alphabetics; (2) Fluency; (3) Vocabulary; and (4) Comprehension.…

  4. 50 CFR Appendix D to Part 404 - Boundary Coordinates for Papaha

    Science.gov (United States)

    2010-10-01

    ... 50 Wildlife and Fisheries 7 2010-10-01 2010-10-01 false Boundary Coordinates for Papaha D Appendix... HAWAIIAN ISLANDS MARINE NATIONAL MONUMENT Pt. 404, App. D Appendix D to Part 404—Boundary Coordinates for Papahanaumokuakea Marine National Monument Ship Reporting Area Appendix D—Geographical Coordinates Ship...

  5. 29 CFR Appendix D to Subpart P of... - Aluminum Hydraulic Shoring for Trenches

    Science.gov (United States)

    2010-07-01

    ... 29 Labor 8 2010-07-01 2010-07-01 false Aluminum Hydraulic Shoring for Trenches D Appendix D to.... 1926, Subpt. P, App. D Appendix D to Subpart P of Part 1926—Aluminum Hydraulic Shoring for Trenches (a) Scope. This appendix contains information that can be used when aluminum hydraulic shoring is...

  6. 78 FR 52457 - Defense Federal Acquisition Regulation Supplement; Appendix A, Armed Services Board of Contract...

    Science.gov (United States)

    2013-08-23

    ...; Appendix A, Armed Services Board of Contract Appeals, Part 1--Charter CFR Correction 0 In Title 48 of the..., in Appendix A to Chapter 2, add two lines to the list immediately preceding Part 1-- Charter to read as follows: Appendix A to Chapter 2--Armed Services Board of Contract Appeals * * * * *...

  7. 34 CFR Appendix A to Subpart N of... - Sample Default Prevention Plan

    Science.gov (United States)

    2010-07-01

    ... 34 Education 3 2010-07-01 2010-07-01 false Sample Default Prevention Plan A Appendix A to Subpart... Default Rates Pt. 668, Subpt. N, App. A Appendix A to Subpart N of Part 668—Sample Default Prevention Plan This appendix is provided as a sample plan for those institutions developing a default prevention...

  8. Preliminary Systems Design Study assessment report. Volume 8, Appendixes

    Energy Technology Data Exchange (ETDEWEB)

    Mayberry, J.L.; Feizollahi, F.; Del Signore, J.C.

    1992-01-01

    The System Design Study (SDS), part of the Waste Technology Development Department at the Idaho National Engineering Laboratory (INEL), examined techniques available for the remediation of hazardous and transuranic waste stored at the Radioactive Waste Management Complex`s Subsurface Disposal Area at the INEL. Using specific technologies, system concepts for treating the buried waste and the surrounding contaminated soil were evaluated. Evaluation included implementability, effectiveness, and cost. The SDS resulted in the development of technology requirements including demonstration, testing, and evaluation activities needed for implementing each concept. This volume of the Systems Design Study contain four Appendixes that were part of the study. Appendix A is an EG&G Idaho, Inc., report that represents a review and compilation of previous reports describing the wastes and quantities disposed in the Subsurface Disposal Area of the Idaho National Engineering Laboratory. Appendix B contains the process flowsheets considered in this study, but not selected for detailed analysis. Appendix C is a historical tabulation of radioactive waste incinerators. Appendix D lists Department of Energy facilities where cementation stabilization systems have been used.

  9. Transverse distinguishability of entangled photons with arbitrarily shaped spatial near- and far-field distributions

    CERN Document Server

    Elsner, Robert; Pieplow, Gregor; Heuer, Axel; Menzel, Ralf

    2014-01-01

    Entangled photons generated by spontaneous parametric down conversion inside a nonlinear crystal exhibit a complex spatial photon count distribution. A quantitative description of this distribution helps with the interpretation of experiments that depend on this structure. We developed a theoretical model and an accompanying numerical calculation that includes the effects of phase matching and the crystal properties to describe a wide range of spatial effects in two-photon experiments. The numerical calculation was tested against selected analytical approximations. We furthermore performed a double-slit experiment where we measured the visibility V and the distinguishability D and obtained $D^2 + V^2 = 1.43$. The numerical model accurately predicts these experimental results.

  10. Powers synthesis of array antennas using the continuation method on far field phase distribution

    NARCIS (Netherlands)

    Castaldi, G.; Gerini, G.

    2002-01-01

    We present a technique, based on the continuation method, to face power synthesis problems for array antennas. By using the least squares method (LSM), the power synthesis problem reduces to the minimization of an objective functional, which represents the square of the distance between the required

  11. Spherical-Wave Far-Field Interferometer for Hard X-Ray Phase Contrast Imaging

    CERN Document Server

    Miao, Houxun; Harmon, Katherine J; Bennett, Eric E; Chedid, Nicholas; Panna, Alireza; Bhandarkar, Priya; Wen, Han

    2014-01-01

    Low dose, high contrast x-ray imaging is of general interest in medical diagnostic applications. X-ray Mach-Zehnder interferometers using collimated synchrotron beams demonstrate the highest levels of phase contrast under a given exposure dose. However, common x-ray sources emit divergent cone beams. Here, we developed a spherical-wave inline Mach-Zehnder interferometer for phase contrast imaging over an extended area with a broadband and divergent source. The first tabletop system was tested in imaging experiments of a mammographic accreditation phantom and various biological specimens. The noise level of the phase contrast images at a clinical radiation dose corresponded to a 6 nano radian bending of the x-ray wavefront. Un-resolved structures with conventional radiography and near-field interferometer techniques became visible at a fraction of the radiation dose.

  12. Far-Field Accumulation of Fissile Material From Waste Packages Containing Plutonium Disposition Waste Form

    International Nuclear Information System (INIS)

    The objective of this calculation is to estimate the quantity of fissile material that could accumulate in fractures in the rock beneath plutonium-ceramic (Pu-ceramic) and Mixed-Oxide (MOX) waste packages (WPs) as they degrade in the potential monitored geologic repository at Yucca Mountain. This calculation is to feed another calculation (Ref. 31) computing the probability of criticality in the systems described in Section 6 and then ultimately to a more general report on the impact of plutonium on the performance of the proposed repository (Ref. 32), both developed concurrently to this work. This calculation is done in accordance with the development plan TDP-DDC-MD-000001 (Ref. 9), item 5. The original document described in item 5 has been split into two documents: this calculation and Ref. 4. The scope of the calculation is limited to only very low flow rates because they lead to the most conservative cases for Pu accumulation and more generally are consistent with the way the effluent from the WP (called source term in this calculation) was calculated (Ref. 4). Ref. 4 (''In-Drift Accumulation of Fissile Material from WPs Containing Plutonium Disposition Waste Forms'') details the evolution through time (breach time is initial time) of the chemical composition of the solution inside the WP as degradation of the fuel and other materials proceed. It is the chemical solution used as a source term in this calculation. Ref. 4 takes that same source term and reacts it with the invert; this calculation reacts it with the rock. In addition to reactions with the rock minerals (that release Si and Ca), the basic mechanisms for actinide precipitation are dilution and mixing with resident water as explained in Section 2.1.4. No other potential mechanism such as flow through a reducing zone is investigated in this calculation. No attempt was made to use the effluent water from the bottom of the invert instead of using directly the effluent water from the WP. This calculation supports disposal criticality analysis and has been prepared in accordance with AP-3.12Q, Calculations (Ref. 49). This calculation uses results from Ref. 4 on actinide accumulation in the invert and more generally does reference heavily the cited calculation. In addition to the information provided in this calculation, the reader is referred to the cited calculation for a more thorough treatment of items applying to both the invert and fracture system such as the choice of the thermodynamic database, the composition of J-13 well water, tuff composition, dissolution rate laws, Pu(OH)4 solubility and also for details on the source term composition. The flow conditions (seepage rate, water velocity in fractures) in the drift and the fracture system beneath initially referred to the TSPA-VA because this work was prepared before the release of the work feeding the TSPA-SR. Some new information feeding the TSPA-SR has since been included. Similarly, the soon-to-be-qualified thermodynamic database data0.ymp has not been released yet

  13. Optical tuning of near and far fields form hybrid dimer nanoantennas via laser-induced melting

    Science.gov (United States)

    Kolodny, Stanislav A.; Sun, Yali; Zuev, Dmitry A.; Makarov, Sergey V.; Krasnok, Alexander E.; Belov, Pavel A.

    2016-08-01

    Hybrid nanophotonics based on metal-dielectric nanostructures unifies the advantages of plasmonics and all-dielectric nanophotonics providing strong localization of light, magnetic optical response and specifically designed scattering properties. Here, we propose a new method for optical properties tuning of hybrid dimer nanoantenas via laser-induced melting at the nanoscale. We demonstrate numerically that near- and farfield properties of a hybrid nanoantenna dramatically changes with fs-laser modification of Au particle. The results lay the groundwork for the fine-tuning of hybrid nanoantennas and can be applied for effective light manipulation at the nanoscale, as well as biomedical and energy applications.

  14. New three-dimensional far-field potential repository thermomechanical calculations; Yucca Mountain Site Characterization Project

    Energy Technology Data Exchange (ETDEWEB)

    Hardy, M.P.; Bai, M.; Goodrich, R.R.; Lin, M.; Carlisle, S. [Agapito (J.F.T.) and Associates, Inc., Grand Junction, CO (United States); Bauer, S.J. [Sandia National Labs., Albuquerque, NM (United States)

    1993-03-01

    The thermomechanical effect on the exploratory ramps, drifts, and shafts as a result of high-level nuclear waste disposal is examined using a three-dimensional thermo-elastic model. The repository layout modeled is based on the use of mechanical mining of all excavations with equivalent waste emplacement areal power densities of 57 and 80 kW/acre. Predicted temperatures and stress changes for the north and south access drifts, east main drift, east-west exploratory drift, the north and south Calico Hills access ramps, the Calico Hills north-south exploratory drift, and the optional exploratory studies facility and man and materials shafts are presented for times 10, 35, 50, 100, 300, 500, 1000, 2000, 5000, and 10,000 years after the start of waste emplacement. The study indicates that the east-west exploratory drift at the repository horizon is subject to the highest thermomechanical impact because it is located closest the buried waste canisters. For most exploratory openings, the thermally induced temperatures and stresses tend to reach the maximum magnitudes at approximately 1000 years after waste emplacement.

  15. An energy absorbing far-field boundary condition for the elastic wave equation

    Energy Technology Data Exchange (ETDEWEB)

    Petersson, N A; Sjogreen, B

    2008-07-15

    The authors present an energy absorbing non-reflecting boundary condition of Clayton-Engquist type for the elastic wave equation together with a discretization which is stable for any ratio of compressional to shear wave speed. They prove stability for a second order accurate finite-difference discretization of the elastic wave equation in three space dimensions together with a discretization of the proposed non-reflecting boundary condition. The stability proof is based on a discrete energy estimate and is valid for heterogeneous materials. The proof includes all six boundaries of the computational domain where special discretizations are needed at the edges and corners. The stability proof holds also when a free surface boundary condition is imposed on some sides of the computational domain.

  16. Solute mass transfer from near field to far field in a HLWR experiment at real scale.

    Science.gov (United States)

    Buil, B.; Peña, J.; Gómez, P.; Garralón, A.; Turrero, M. J.; Sánchez, L.; Durán, J. M.

    2009-04-01

    The FEBEX experiment located in Grimsel (Switzerland) is a 1:1 simulation of a high level waste disposal facility in crystalline rock according to the Spanish concept: two electrical heaters of dimension and weight equivalent to those of the real canisters were installed concentrically with the drift and simulated the thermal effect of the wastes and surrounded by a clay barrier constructed from highly-compacted bentonite blocks. This experiment started in 1996 and the external rim of bentonite is saturated with the granitic water. The difference between the chemical gradients generated by the bentonite porewater and the granitic water made possible the movement of solute into the geosphere. The experiment reproduces in the most realistic conditions, all the processes affecting the radionuclide migration in a HLWR. Two boreholes parallel to the axis of the FEBEX drift were drilled in granite relatively close to the bentonite surface (20 and 60cm) in order to highlight the solute migration mechanisms in crystalline host rock, influenced by the presence of the bentonite buffer and by the geochemical gradients generated at the bentonite/granite interface. After three years of periodic water sampling campaigns in those boreholes, the chemical composition of waters reveal that there is an appreciable increase of Na and Cl concentration in time in the waters sampled from the borehole located at 20cm from the bentonite surface. On the other hand, the Na/Cl ratio in waters is similar to the Na/Cl ratio in the bentonite porewater. For this reason Cl and Na are considered as the main natural tracers indicating the mass transfer process between the bentonite porewater and the granite. A diffusion transport modelling (PHREEQC) was used to describe the mass transfer process. The results show that the Cl and Na concentration in the granitic waters is the result of a diffusive transport from the bentonite to the granite, with a calculated De≈ 5,0E-11 m2/s. These results could have some implications for the performance assessment due to the analogy between 36Cl (one of the dominant radionuclides in the average annual doses in the reference scenario) and the Cl ion. Safety case should take into account the transport of conservative solutes from the bentonite into the granite.

  17. Far-field constant-gradient laser accelerator of electrons in an ion channel

    CERN Document Server

    Khudik, Vladimir; Shvets, Gennady

    2016-01-01

    We predict that electrons in an ion channel can gain ultra-relativistic energies by simultaneously interacting with a laser pulse and, counter-intuitively, with a decelerating electric field. The crucial role of the decelerating field is to maintain high-amplitude betatron oscillations, thereby enabling constant rate energy flow to the electrons via the direct laser acceleration mechanism. Multiple harmonics of the betatron motion can be employed. Injecting electrons into a decelerating phase of a laser wakefield accelerator is one practical implementation of the scheme.

  18. Far-Field Voice Activity Detection and Its Applications in Adverse Acoustic Environments

    DEFF Research Database (Denmark)

    Petsatodis, Theodoros

    2012-01-01

    are subject to reverberation effects, competitive sound sources, and speaker movement. Furthermore, speech distribution varies with time and can be affected by several unpredictable factors including speaker’s temper, mood, gender, age, and more. Thus, during the design phase of a VAD, special considerations....... Furthermore, performance enhancement when using VAD in combination with noise reduction systems is also discussed in terms of residual suppression within silence intervals. For this scope, a noise reduction architecture has been developed based on cascading an one-pass scheme. The final application of VAD...

  19. Near-to-far field transformations for radiative and guided waves

    CERN Document Server

    Yang, Jianji; Lalanne, Philippe

    2015-01-01

    Light emitters or scatterers embedded in stratified media may couple energy to both free space and guided modes of the stratified structure. For a thorough analysis of such structures, it is important to evaluate the angular intensity distribution of both the free-space-propagative and guided waves. In this work, we propose an original method based on Lorentz-reciprocity theorem and on the computation of the near-field around the emitters or scatterers, to efficiently calculate the free-space and guided radiation diagrams with a high accuracy. We also provide an open-source code that may be used with virtually any Maxwells solver. The numerical tool may help to engineer various devices, such as light-emitting diodes or nanoantennas to achieve directional and efficient radiative spontaneous decays in free space and guided optics.

  20. Robustness of the far-field response of nonlocal plasmonic ensembles

    DEFF Research Database (Denmark)

    Tserkezis, Christos; Maack, Johan Rosenkrantz; Liu, Zhaowei;

    2016-01-01

    distribution. For a normal distribution of free-electron nanoparticles, and within the simple nonlocal hydrodynamic Drude model, both the nonlocal blueshift and the plasmon linewidth are shown to be considerably affected by ensemble averaging. Size-variance effects tend however to conceal nonlocality to a...

  1. Compact resonator on leather for nonradiative inductive power transfer and far-field data links

    Science.gov (United States)

    Monti, G.; Corchia, L.; De Benedetto, E.; Tarricone, L.

    2016-06-01

    In this paper, a wearable resonator suitable to be used for both power and data transmission is presented. The basic element is a complementary split ring resonator that has been optimized to operate both as a dipole-like antenna at 2.45 GHz and as the receiver of a resonant energy link operating at 915 MHz when coupled with an identical external resonator connected to a power source. Experimental data referring to a prototype fabricated by using a conductive adhesive fabric on a leather substrate are reported and discussed. With regard to the wireless resonant energy link (WREL), it is demonstrated that at 915 MHz, the RF-to-RF power transfer efficiency of the link is approximately 78.1%. As for the performance obtained when the resonator is used as an antenna, a gain of approximately -0.43 dB was obtained. Additionally, the performance of the proposed link when connected to a Power Management Unit (PMU) that converts the radio frequency (RF) energy received by the wearable resonator into DC energy that can be directly used for recharging a thin-film battery was also investigated. Experimental tests were performed in order to evaluate both the total efficiency of the wireless charger (i.e., the WREL link connected to the PMU) and the time necessary to recharge a THINERGY MEC201 battery. The obtained results demonstrate the feasibility of using the proposed WREL for implementing a battery charger; in particular, by providing an input power higher than 8 dBm, the time necessary to recharge the considered thin-film battery is shorter than 38 min.

  2. Electrical model simulation for a UHF RFID system in near and far fields

    OpenAIRE

    Abou Chakra, Sara; Farrukh, Usamah O.; Amante García, Beatriz

    2012-01-01

    Radio Frequency IDentification (RFID) deployment is needed for efficient item identification. A simulation environment in HP-ADS (Advanced Design System of Agilent Technologies) of Ultra High Frequency RFID systems is constructed in this paper. This paper simulates the system through an electrical model. The tag is represented by a simple empirical model representing the antenna and the chip. The chip is modeled by its impedance which varies with the code. The tag’s model is suitable...

  3. Spectral discrete probability density function of measured wind turbine noise in the far field

    Directory of Open Access Journals (Sweden)

    Payam eAshtiani

    2015-04-01

    Full Text Available Of interest is the spectral character of wind turbine noise at typical residential set-back distances. In this paper a spectral statistical analysis has been applied to immission measurements conducted at three locations. This method provides discrete probability density functions for the Turbine ONLY component of the measured noise. This analysis is completed for 1/3rd Octave sound levels, at integer wind speeds, and is compared to existing metrics for measuring acoustic comfort as well as previous discussions on low frequency noise sources.

  4. Efficient voice activity detection in reverberant enclosures using far field microphones

    DEFF Research Database (Denmark)

    Petsatodis, Theodore; Boukis, Christos

    2009-01-01

    An algorithm suitable for voice activity detection under reverberant conditions is proposed in this paper. Due to the use of far-filed microphones the proposed solution processes speech signals of highly-varying intensity and signal to noise ratio, that are contaminated with several echoes....... The core of the system is a pair of Hidden Markov Models, that effectively model the speech presence and speech absence situations. To minimise mis-detections an adaptive threshold is used, while a hang-over scheme caters for the intra-frame correlation of speech signals. Experimental results conducted...

  5. Spectral discrete probability density function of measured wind turbine noise in the far field.

    Science.gov (United States)

    Ashtiani, Payam; Denison, Adelaide

    2015-01-01

    Of interest is the spectral character of wind turbine noise at typical residential set-back distances. In this paper, a spectral statistical analysis has been applied to immission measurements conducted at three locations. This method provides discrete probability density functions for the Turbine ONLY component of the measured noise. This analysis is completed for one-third octave sound levels, at integer wind speeds, and is compared to existing metrics for measuring acoustic comfort as well as previous discussions on low-frequency noise sources. PMID:25905097

  6. Far field 3D localization of radioactive hot spots using a coded aperture camera.

    Science.gov (United States)

    Shifeng, Sun; Zhiming, Zhang; Lei, Shuai; Daowu, Li; Yingjie, Wang; Yantao, Liu; Xianchao, Huang; Haohui, Tang; Ting, Li; Pei, Chai; Yiwen, Zhang; Wei, Zhou; Mingjie, Yang; Cunfeng, Wei; Chuangxin, Ma; Long, Wei

    2016-01-01

    This paper presents a coded aperture method to remotely estimate the radioactivity of a source. The activity is estimated from the detected counts and the estimated source location, which is extracted by factoring the effect of aperture magnification. A 6mm thick tungsten-copper alloy coded aperture mask is used to modulate the incoming gamma-rays. The location of point and line sources in all three dimensions was estimated with an accuracy of less than 10% when the source-camera distance was about 4 m. The estimated activities were 17.6% smaller and 50.4% larger than the actual activities for the point and line sources, respectively.

  7. Far-field acoustic data for the Texas ASE, Inc. Hush-House, supplement

    Science.gov (United States)

    Lee, R. A.

    1982-04-01

    This report supplements AFAMRL-TR-73-110, which describes the data base (NOISEFILE) used in the computer program (NOISEMAP) to predict the community noise exposure resulting from military aircraft operations. The results of field test measurements to define the single-event noise produced on the ground by military aircraft/engines operating in the Texas ASE Inc. hush-house are presented as a function of angle (0 to 180 from the front of the hush-house) and distance (200 ft to 2500 ft) in various acoustic metrics.

  8. Far-field acoustic data for the Texas ASE, Inc. hush house

    Science.gov (United States)

    Lee, R. A.

    1982-04-01

    This report supplements AFAMRL-TR-73-110, which describes the data base (NOISEFILE) used in the computer program (NOISEMAP) to predict the community noise exposure resulting from military aircraft operations. The results of field test measurements to define the single-event noise produced on the ground by military aircraft/engines operating in the Texas ASE Inc. hush-house are presented as a function of angle (0 deg to 180 deg from the front of the hush-house) and distance (200 ft to 2500 ft) in various acoustic metrics. All the data are normalized to standard acoustic reference conditions of 59 F temperature and 70% relative humidity. Refer to Volume I of the AFAMRL-TR-73-110 report for discussion of the scope, limitations, and definitions needed to understand and use the data in this report.

  9. Corkscrew point spread function for far-field three-dimensional nanoscale localization of pointlike objects

    OpenAIRE

    Lew, Matthew D.; Steven F. Lee; Badieirostami, Majid; Moerner, W. E.

    2011-01-01

    We describe the corkscrew point spread function (PSF), which can localize objects in three dimensions throughout a 3.2 µm depth of field with nanometer precision. The corkscrew PSF rotates as a function of the axial (z) position of an emitter. Fisher information calculations show that the corkscrew PSF can achieve nanometer localization precision with limited numbers of photons. We demonstrate three-dimensional super-resolution microscopy with the corkscrew PSF by imaging beads on the surface...

  10. Plasmon assisted fluorescence emission: far-field observables and their fluctuations

    NARCIS (Netherlands)

    L.A. Langguth

    2015-01-01

    Fluorescence describes the property of matter to absorb light and shortly after emit light of another color. Fluorescent materials are found in nature, e.g. in the jelly-fish Aequorea victoria, in some plants and mushrooms, and in minerals such as Fluorite in which this property was first scientific

  11. Scaling of far-field wake angle of non-axisymmetric pressure disturbance

    OpenAIRE

    Moisy, Frederic; Rabaud, Marc

    2014-01-01

    It has been recently emphasized that the angle of maximum wave amplitude $\\alpha$ in the wake of a disturbance of finite size can be significantly narrower than the maximum value $\\alpha_K = \\sin^{-1}(1/3) \\simeq 19.47^\\mathrm{o}$ predicted by the classical analysis of Kelvin. For axisymmetric disturbance, simple argument based on the Cauchy-Poisson initial-value problem suggests that the wake angle decreases following a Mach-like law at large velocity, $\\alpha \\simeq Fr_L^{-1}$, where $Fr_L=...

  12. The scaling of far-field wake angle of non-axisymmetric pressure disturbance

    CERN Document Server

    Moisy, Frederic

    2014-01-01

    It has been recently emphasized that the angle of maximum wave amplitude $\\alpha$ in the wake of a disturbance of finite size can be significantly narrower than the maximum value $\\alpha_K = \\sin^{-1}(1/3) \\simeq 19.47^\\mathrm{o}$ predicted by the classical analysis of Kelvin. For axisymmetric disturbance, simple argument based on the Cauchy-Poisson initial-value problem suggests that the wake angle decreases following a Mach-like law at large velocity, $\\alpha \\simeq Fr_L^{-1}$, where $Fr_L=U/\\sqrt{gL}$ is the Froude number based on the disturbance velocity $U$, its size $L$, and gravity $g$. In this paper we extend this analysis to the case of non-axisymmetric disturbances, relevant to real ships. We find that, for intermediate Froude numbers, the wake angle follows an intermediate scaling law $\\alpha \\simeq Fr_L^{-2}$, in agreement with the recent prediction of Noblesse \\textit{et al.} [``Why can ship wakes appear narrower than Kelvin's angle?'' to appear in Eur. J. Mech. B/Fluids (2014)]. We show that bey...

  13. Scaling of far-field wake angle of nonaxisymmetric pressure disturbance.

    Science.gov (United States)

    Moisy, F; Rabaud, M

    2014-06-01

    It has been recently emphasized that the angle of maximum wave amplitude α in the wake of a disturbance of finite size can be significantly narrower than the maximum value α_{K}=sin^{-1}(1/3)≃19.47^{∘} predicted by the classical analysis of Kelvin. For axisymmetric disturbance, a simple argument based on the Cauchy-Poisson initial-value problem suggests that the wake angle decreases following a Mach-like law at large velocity, α≃Fr_{L}^{-1}, where Fr_{L}=U/sqrt[gL] is the Froude number based on the disturbance velocity U, its size L, and gravity g. In this paper we extend this analysis to the case of nonaxisymmetric disturbances, relevant to real ships. We find that, for intermediate Froude numbers, the wake angle follows an intermediate scaling law α≃Fr_{L}^{-2}, in agreement with the recent prediction of Noblesse et al. [Eur. J. Mech. B/Fluids 46, 164 (2014)]. We show that beyond a critical Froude number, which scales as A^{1/2} (where A is the length-to-width aspect ratio of the disturbance), the asymptotic scaling α≃Fr_{B}^{-1} holds, where now Fr_{B}=A^{1/2}Fr_{L} is the Froude number based on the disturbance width. We propose a simple model for this transition, and provide a regime diagram of the scaling of the wake angle as a function of parameters (A,Fr_{L}). PMID:25019876

  14. Plasmonics of opalic surface: a combined near-and far-field approach

    CERN Document Server

    Lethiec, Clotilde; Popescu, Trajan; Frederich, Hugo; Ngoc, Phan; Yraola, Eduardo; Schwob, Catherine; Charra, Fabrice; Coolen, Laurent; Douillard, Ludovic; Maître, Agnès

    2016-01-01

    An opalic plasmonic sample, constituted by a hexagonal arrangement of metallized silica spheres, presents remarkable optical properties due to the mixing of periodic arrangement and singularities at the sphere touching points. It is therefore an interesting candidate for exploiting the excitation of both localized and propagating surface plasmons. Several channels of excitation based on these properties or exploiting a certain level of disorder are evidenced, opening new routes for the efficient excitation of plasmons on a wide spectral range. The versatility of such hybrid system is evidenced in the context of two complementary experiments: specular reflective spectrometry and photoemission electron microscopy. Both techniques offer different points of view on the same physical phenomenon and the link between them is discussed. Such experiments evidence the opportunities offered by these 2D hybrid materials in the context of nanophotonics.

  15. Highly directive and Gaussian far-field emission from “giant” photonic trumpets

    DEFF Research Database (Denmark)

    Stepanov, Petr; Delga, Adrien; Gregersen, Niels;

    2015-01-01

    beam Mg ¼ 0:98. Future application prospects include the direct coupling of these devices to a cleaved single-mode optical fiber. The calculated transmission from the taper base to the fiber already reaches 0.59, and we discuss strategies to further improve this figure of merit.......Photonic trumpets are broadband dielectric antennas that efficiently funnel the emission of a pointlike quantum emitter—such as a semiconductor quantum dot—into a Gaussian free-space beam. After describing guidelines for the taper design, we present a “giant” photonic trumpet. The device features...

  16. Far-Field Accumulation of Fissile Material From Waste Packages Containing Plutonium Disposition Waste Form

    Energy Technology Data Exchange (ETDEWEB)

    J.P. Nicot

    2000-09-29

    The objective of this calculation is to estimate the quantity of fissile material that could accumulate in fractures in the rock beneath plutonium-ceramic (Pu-ceramic) and Mixed-Oxide (MOX) waste packages (WPs) as they degrade in the potential monitored geologic repository at Yucca Mountain. This calculation is to feed another calculation (Ref. 31) computing the probability of criticality in the systems described in Section 6 and then ultimately to a more general report on the impact of plutonium on the performance of the proposed repository (Ref. 32), both developed concurrently to this work. This calculation is done in accordance with the development plan TDP-DDC-MD-000001 (Ref. 9), item 5. The original document described in item 5 has been split into two documents: this calculation and Ref. 4. The scope of the calculation is limited to only very low flow rates because they lead to the most conservative cases for Pu accumulation and more generally are consistent with the way the effluent from the WP (called source term in this calculation) was calculated (Ref. 4). Ref. 4 (''In-Drift Accumulation of Fissile Material from WPs Containing Plutonium Disposition Waste Forms'') details the evolution through time (breach time is initial time) of the chemical composition of the solution inside the WP as degradation of the fuel and other materials proceed. It is the chemical solution used as a source term in this calculation. Ref. 4 takes that same source term and reacts it with the invert; this calculation reacts it with the rock. In addition to reactions with the rock minerals (that release Si and Ca), the basic mechanisms for actinide precipitation are dilution and mixing with resident water as explained in Section 2.1.4. No other potential mechanism such as flow through a reducing zone is investigated in this calculation. No attempt was made to use the effluent water from the bottom of the invert instead of using directly the effluent water from the WP. This calculation supports disposal criticality analysis and has been prepared in accordance with AP-3.12Q, Calculations (Ref. 49). This calculation uses results from Ref. 4 on actinide accumulation in the invert and more generally does reference heavily the cited calculation. In addition to the information provided in this calculation, the reader is referred to the cited calculation for a more thorough treatment of items applying to both the invert and fracture system such as the choice of the thermodynamic database, the composition of J-13 well water, tuff composition, dissolution rate laws, Pu(OH){sub 4} solubility and also for details on the source term composition. The flow conditions (seepage rate, water velocity in fractures) in the drift and the fracture system beneath initially referred to the TSPA-VA because this work was prepared before the release of the work feeding the TSPA-SR. Some new information feeding the TSPA-SR has since been included. Similarly, the soon-to-be-qualified thermodynamic database data0.ymp has not been released yet.

  17. Numerical simulation of the sound reflection effects of noise barriers in near and far field

    NARCIS (Netherlands)

    Lutgendorf, D.; Roo, F. de; Eerden, F.J.M. van der; Jean, P.; Ecotière, D.; Dutilleux, G.

    2011-01-01

    This paper deals with the first stages of the development of a new test method for evaluating the reflectivity performance of noise barriers. The reflectivity performance describes the increase in sound level at a receiver due to the presence of the noise barrier. First the current test method for s

  18. Far-field resonance fluorescence from a dipole-interacting laser-driven cold atomic gas

    CERN Document Server

    Jones, Ryan; Olmos, Beatriz

    2016-01-01

    We analyze the temporal response of the fluorescence light that is emitted from a dense gas of cold atoms driven by a laser. When the average interatomic distance is smaller than the wavelength of the photons scattered by the atoms, the system exhibits strong dipolar interactions and collective dissipation. We solve the exact dynamics of small systems with different geometries and show how these collective features are manifest in the scattered light properties such as the photon emission rate, the power spectrum and the second-order correlation function. By calculating these quantities beyond the weak driving limit, we make progress in understanding the signatures of collective behavior in these many-body systems. Furthermore, we clarify the role of disorder on the resonance fluorescence, of direct relevance for recent experimental efforts that aim at the exploration of many-body effects in dipole-dipole interacting gases of atoms.

  19. Verification and validation of models: far-field modelling of radionuclide migration

    International Nuclear Information System (INIS)

    The aim of this project was to improve the capability, efficiency and realism of the NAMMU and NAPSAC codes, which simulate groundwater flow and solute transport. Using NAMMU, various solution methods for non linear problems were investigated. The Broyden method gave a useful reduction in computing time and appeared robust. The relative saving obtained with this method increased with the problem size. This was also the case when parameter stepping was used. The existing empirical sorption models in NAMMU were generalized and a ternary heterogeneous ion exchange model was added. These modifications were tested and gave excellent results. The desirability of coupling NAMMU to an existing geochemical speciation code was assessed

  20. Higher degree moment tensor inversion of Mani earthquake using far-field broad- band recording

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    Breakthrough point source model, extended earthquake source model is used to calculate more seismic source parameters in this paper. We express seismic source using higher degree moment tensors, to reduce a large number terms originally presenting in higher degree moment tensor representation, Haskell rupture model is used. We inverted the source parameters of Mani earthquake in Tibet using broad-band body wave of 32 stations of Global Seismograph Network (GSN), the results show that it is a strike-slip fault, rupture direction is 75° , rupture duration is 19 s, the fault plan is f =77° , d =88° , l =0° , the auxiliary plane is f =347° , d =90° , l =178° , and the fault dimension is 47 km′ 28 km. These results will give new quantitative data for earth dynamics and have practical meaning for seismic source tomography research.

  1. Near and Far Field Particle Plumes Around an Erupting Volcano - W Mata, NE Lau Basin

    Science.gov (United States)

    Walker, S. L.; Baker, E. T.; Lupton, J. E.; Resing, J.; Crowhurst, P. V.; Greene, R.; Buck, N.

    2009-12-01

    Particle-rich plumes carry emissions from actively erupting submarine volcanoes to the ocean environment. Characterizing and mapping the distribution of these plumes can help identify the nature of the eruption, define its impact on ocean chemistry, and suggest mechanisms for the transport of fine ash to distal sediments. Unusually intense particle plumes encountered over W Mata volcano (NE Lau basin) during November 2008 were confirmed in May 2009 to be the product of an ongoing submarine volcanic eruption with more than one active vent near the summit at water depths of 1175-1207 m. The particle plume over the summit in November 2008 was unusually intense in many respects. Light scattering anomalies of dNTU>1.0 were present in the bottom 150 m of the water column (below 1030 m), and exceeded the maximum detection limit of the sensor (dNTU=5.0) for more than 10 minutes while the CTD was within this depth range. The bottom 50 m of the water column had an average temperature anomaly of 0.8°C, spiking to 2.0°C near the seafloor. The oxidation-reduction potential (ORP) plunged dramatically within the particle plume, reaching a maximum anomaly of more than 750 mV near the seafloor. Two CTD tows suggest the plume was being dispersed to the south and west of the summit in November 2008 within a narrow depth range centered at 1050-1100 m. CTD casts conducted in May 2009 showed the particle plume above the summit of W Mata was still optically intense (dNTU>2.0) but occurred as an above-bottom plume at a depth range of 1070-1150 m water depth. The ORP anomaly was 340 mV. Temperature anomalies within the particle plume were less intense than in November. Additional particle profiles acquired on a separate cruise in May 2009 found the W Mata plume was being advected to the north and west of the volcano to a distance of at least 10 km from the summit. In addition to these summit plumes, particle layers were also found at deeper depths. At other erupting volcanoes, down-flank gravity flows create layers of fine ash that can extend to beyond a volcano’s base and are devoid of hydrothermal tracers, such as 3He. A cast in 2004 (to >3000 m) 5 km west of the summit found a thin layer at ~2550 m with a weak particle anomaly (dNTU=0.017) and an elevated 3He value of ~50 δ(3He)%. In 2008 and 2009, several casts within 20 km of W Mata showed thick particle layers (dNTU to ~0.05) from ~2100 m to the seafloor (as deep as 2900 m), without corresponding 3He anomalies. The thin 3He layer at 2550 m was detected again in 2008 but the associated particle anomaly was obscured by the more intense particle concentrations both above and below this depth. The absence of substantial deep plumes in 2004, together with a summit-depth plume a factor of 10 weaker (dNTU~0.01) than seen at about the same location in 2008/09, implies that volcanism at W Mata was less active in 2004 than in 2008/09. We hypothesize that the newly observed deep particle layers are ash dispersing from the summit of an increasingly active W Mata, while the thin 3He layer at ~2550 identifies a yet undiscovered deep hydrothermal source.

  2. Waveguide-based ultrasonic and far-field electromagnetic sensors for downhole reservoir characterization.

    Energy Technology Data Exchange (ETDEWEB)

    Sheen, S. H.; Chien, H. T.; Wang, K.; Liao, S.; Gopalsami, N.; Bakhtiari, S.; Raptis, A. C.; Nuclear Engineering Division

    2010-11-12

    This report summarizes the first year research and development effort leading to development of high-temperature sensors for enhanced geothermal systems. It covers evaluation of ultrasonic and electromagnetic (EM) techniques applied to temperature measurement and flow characterization. On temperature measurement, we have evaluated both microwave radiometry and ultrasonic techniques for temperature gradient and profile measurements. Different antenna designs are evaluated and array loop antenna design is selected for further development. We have also evaluated ultrasonic techniques for total flow characterization, which includes using speed of sound to determine flow temperature, measuring acoustic impedance to estimate fluid density, and using cross-correlation technique to determine the mass flow rate. Method to estimate the flow enthalpy is briefly discussed. At end, the need and proposed techniques to characterize the porosity and permeability of a hot dry rock resource are presented.

  3. Yucca Mountain Project far-field sorption studies and data needs

    International Nuclear Information System (INIS)

    Batch sorption experiments in which radionuclides dissolved in groundwaters from Yucca Mountain were sorbed onto samples of crushed tuff have resulted in a substantial database of sorption coefficients for radionuclides of interest to the repository program. Although this database has been useful in preliminary evaluations of Yucca Mountain as a potential site for a nuclear waste repository, the database has limitations that must be addressed before it can be used for performance assessment calculations in support of a license application for a waste repository. The purpose of this paper is to: review the applicability of simple (constant) sorption coefficients in transport calculations; review and evaluate alternative methods for the derivation of sorption coefficients; summarize and evaluate the present YMP sorption database to identify areas of data sufficiency and significant data gaps; summarize our current understanding of pertinent sorption mechanisms and associated kinetic parameters; evaluate the significance to the YMP of potential problems in the experimental determination and field application of sorption coefficients as enumerated by the NRC (Nuclear Regulatory Commission, 1987) in its technical position paper on sorption; formulate and evaluate strategies for the resolution of NRC concerns regarding experimental problems; and formulate a position on the sorption coefficient database and the level of understanding of sorption mechanisms likely to be required in the licensing application. 75 refs., 1 fig., 2 tabs

  4. Learning for autonomous navigation : extrapolating from underfoot to the far field

    Science.gov (United States)

    Matthies, Larry; Turmon, Michael; Howard, Andrew; Angelova, Anelia; Tang, Benyang; Mjolsness, Eric

    2005-01-01

    Autonomous off-road navigation of robotic ground vehicles has important applications on Earth and in space exploration. Progress in this domain has been retarded by the limited lookahead range of 3-D sensors and by the difficulty of preprogramming systems to understand the traversability of the wide variety of terrain they can encounter. Enabling robots to learn from experience may alleviate both of these problems. We define two paradigms for this, learning from 3-D geometry and learning from proprioception, and describe initial instantiations of them we have developed under DARPA and NASA programs. Field test results show promise for learning traversability of vegetated terrain, learning to extend the lookahead range of the vision system, and learning how slip varies with slope.

  5. Advanced wellbore thermal simulator GEOTEMP2. Appendix. Computer program listing

    Energy Technology Data Exchange (ETDEWEB)

    Mitchell, R.F.

    1982-02-01

    This appendix gives the program listing of GEOTEMP2 with comments and discussion to make the program organization more understandable. This appendix is divided into an introduction and four main blocks of code: main program, program initiation, wellbore flow, and wellbore heat transfer. The purpose and use of each subprogram is discussed and the program listing is given. Flowcharts will be included to clarify code organization when needed. GEOTEMP2 was written in FORTRAN IV. Efforts have been made to keep the programing as conventional as possible so that GEOTEMP2 will run without modification on most computers.

  6. Endometriose kan medføre invagination af appendix

    DEFF Research Database (Denmark)

    Brodersen, Katrine

    2015-01-01

    Intussusception of the appendix is a rare condition with an incidence of approximately 0.01%. In adults, the lead point for the intussusception is most frequently endometriosis, whereas in children, acute inflammation of the appendix is usually the cause (76%). This case report presents a 41-year......-old woman who was referred to hospital care primarily due to blood in her stool and a 1 × 3 cm polypous tumour in her caecum, observed during colonoscopy. She had no gynaecologic history and a normal exam. A right-sided hemicolectomy was performed and pathology showed endometriosis and acute and chronic...

  7. The bumper module of the Audi A4; Das Stossfaengersystem des Audi A4

    Energy Technology Data Exchange (ETDEWEB)

    Haberer, K. [Audi AG, Ingolstadt (Germany)

    2000-11-01

    Special attention was given to the bumper module of the new A4 during the development process. It is notable for its flush integration into the body, with 'zero' clearances and short overhangs. The module includes the bumper supports, the outer covering, the air inlet grille, the fog lights and the horns. Optional extras are an integrated ultrasonic 'Acoustic Parking System' (either front and rear or at the rear only) and a headlamp washer system. Both the bumper support and the deformation elements are made of weight-saving aluminium. The holder for the towing lug has been integrated into the right-hand deformation element and the towing forces are borne centrally by the side member. (orig.) [German] Dem Stossfaengermodul des neuen A4 wurde bei der Entwicklung besondere Aufmerksamkeit gewidmet. Es zeichnet sich durch eine buendige Formintegration in die Karosserie mit sogenannten Nullfugen und durch kurze Karosserieueberstaende aus. (orig.)

  8. Appendix: XXXVI: Integrating knowledge within business processes

    International Nuclear Information System (INIS)

    AMEC NNC is a privately owned international engineering, project management, safety and technical consultancy, dedicated to providing expert advice and solutions to complex engineering and project management challenges in the nuclear and non-nuclear markets. Employing in excess of 1000 people, our network comprises 31 offices across the world. AMEC plc is a world leader in technical services and project management, employing around 45,000 people in some 40 countries around the world. AMEC specializes in the design, delivery and support of infrastructure ranging from local technical services to international landmark projects. This appendix describes the methodology used by AMEC NNC to capture knowledge and best practice within its business processes. In 2003, AMEC NNC conducted an audit of its policies, processes and procedures. This resulted in a number of 'problem areas' being highlighted. We found conflicting business process information and in some cases key areas had no processes associated to them at all. It was felt that much of this had occurred due to rapid growth, confused process ownership and a complex arrangement of documented quality procedures. AMEC NNC decided there was a need to implement a new Integrated Management System (IMS) - a system based on processes and roles first, and supporting documentation second. Fundamental areas such as Quality and Health and Safety would now be inherent in key business areas such as engineering project management, procurement and administration. Additionally, it was deemed beneficial to link 'knowledge' to the execution of the process that would allow new or inexperienced staff to become quickly familiar with best practice and to execute tasks in an efficient and safe manner. After competitive tender, AMEC NNC chose ARIS (Architecture of Integrated Information Systems) from IDS Scheer as the tool for designing and modelling its business processes and capturing best practice

  9. 32 CFR Appendix E to Part 505 - Litigation Status Sheet

    Science.gov (United States)

    2010-07-01

    ... PUBLIC RELATIONS ARMY PRIVACY ACT PROGRAM Pt. 505, App. E Appendix E to Part 505—Litigation Status Sheet...,” “Incorrect records”, or other violations of the Act (specify); (c) Litigation: Date complaint filed, Court... (g) Appeal (If applicable): Date complaint filed, court, case File Number, court's...

  10. 24 CFR Appendix E to Part 3500 - Arithmetic Steps

    Science.gov (United States)

    2010-04-01

    ... 24 Housing and Urban Development 5 2010-04-01 2010-04-01 false Arithmetic Steps E Appendix E to Part 3500 Housing and Urban Development Regulations Relating to Housing and Urban Development (Continued) OFFICE OF ASSISTANT SECRETARY FOR HOUSING-FEDERAL HOUSING COMMISSIONER, DEPARTMENT OF HOUSING...

  11. 32 CFR Appendix B to Part 513 - Standards of Fairness

    Science.gov (United States)

    2010-07-01

    ... PUBLIC RELATIONS INDEBTEDNESS OF MILITARY PERSONNEL Pt. 513, App. B Appendix B to Part 513—Standards of... (1976)) and the Federal Reserve Board Regulation Z (12 CFR part 226 and §§ 226.3, 226.9 (1978))....

  12. 31 CFR Appendix A to Subpart A of... - Departmental Offices

    Science.gov (United States)

    2010-07-01

    ... Offices 1. In general. This appendix applies to the Departmental Offices as defined in 31 CFR 1.1(a)(1). 2.... Requests for records. Initial determinations under 31 CFR 1.5(h) as to whether to grant requests for... to deny records. (i) Appellate determinations under 31 CFR 1.5(i) with respect to records of...

  13. 18 CFR 301.6 - Appendix 1 instructions.

    Science.gov (United States)

    2010-04-01

    ... Investment/Rate Base (2) Schedule 1A: Cash Working Capital (3) Schedule 2: Capital Structure and Rate of... functionalize the Utility's costs. (h) A Utility operating in more than one Pacific Northwest Jurisdiction must file one Appendix 1. (i)(1) A Utility operating in a Jurisdiction within the Pacific Northwest...

  14. 40 CFR Appendix A to Part 272 - State Requirements

    Science.gov (United States)

    2010-07-01

    ....G (except the phrase “and financial test and guarantee, except that the financial test and guarantee... Bender & Company Inc., P.O. Box 7587, Charlottesville, VA 22906-7587, phone number: (800) 833-9844. (b... citations affecting appendix A to part 272, see the List of CFR Sections Affected, which appears in...

  15. 20 CFR Appendixes to Subpart C of... - Note

    Science.gov (United States)

    2010-04-01

    ... Employees' Benefits SOCIAL SECURITY ADMINISTRATION FEDERAL OLD-AGE, SURVIVORS AND DISABILITY INSURANCE (1950- ) Computing Primary Insurance Amounts Pt. 404, Subpt. C, Apps., Nt. Appendixes to Subpart C of Part 404—Note The following appendices contain data that are needed in computing primary insurance amounts....

  16. 20 CFR Appendix III to Subpart C... - Benefit Table

    Science.gov (United States)

    2010-04-01

    ... DISABILITY INSURANCE (1950- ) Computing Primary Insurance Amounts Pt. 404, Subpt. C, App. III Appendix III to Subpart C of Part 404—Benefit Table This benefit table shows primary insurance amounts and maximum family... insurance amounts for an individual whose entitlement began in the period June 1977 through May 1978....

  17. 22 CFR Appendix A to Part 226 - Contract Provisions

    Science.gov (United States)

    2010-04-01

    ... Organizations and Small Business Firms Under Government Grants, Contracts and Cooperative Agreements,” and any... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Contract Provisions A Appendix A to Part 226 Foreign Relations AGENCY FOR INTERNATIONAL DEVELOPMENT ADMINISTRATION OF ASSISTANCE AWARDS TO U.S....

  18. 29 CFR Appendix A to Part 801 - Notice to Examinee

    Science.gov (United States)

    2010-07-01

    ... OF THE EMPLOYEE POLYGRAPH PROTECTION ACT OF 1988 Pt. 801, App. A Appendix A to Part 801—Notice to Examinee Section 8(b) of the Employee Polygraph Protection Act, and Department of Labor regulations (29 CFR... a polygraph examination: 1. (a) The polygraph examination area contain a two-way mirror, a...

  19. 15 CFR Appendix I to Part 921 - Biogeographic Classification Scheme

    Science.gov (United States)

    2010-01-01

    ... 15 Commerce and Foreign Trade 3 2010-01-01 2010-01-01 false Biogeographic Classification Scheme I... RESOURCE MANAGEMENT NATIONAL ESTUARINE RESEARCH RESERVE SYSTEM REGULATIONS Pt. 921, App. I Appendix I to Part 921—Biogeographic Classification Scheme Acadian 1. Northern of Maine (Eastport to the...

  20. Construction safety program for the National Ignition Facility, Appendix B

    Energy Technology Data Exchange (ETDEWEB)

    Cerruti, S.J.

    1997-06-26

    This Appendix contains material from the LLNL Health and Safety Manual as listed below. For sections not included in this list, please refer to the Manual itself. The areas covered are: asbestos, lead, fire prevention, lockout, and tag program confined space traffic safety.

  1. Construction safety program for the National Ignition Facility, Appendix B

    International Nuclear Information System (INIS)

    This Appendix contains material from the LLNL Health and Safety Manual as listed below. For sections not included in this list, please refer to the Manual itself. The areas covered are: asbestos, lead, fire prevention, lockout, and tag program confined space traffic safety

  2. 14 CFR Appendix C to Part 147 - Airframe Curriculum Subjects

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airframe Curriculum Subjects C Appendix C to Part 147 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) SCHOOLS AND OTHER CERTIFICATED AGENCIES AVIATION MAINTENANCE TECHNICIAN SCHOOLS Pt. 147, App....

  3. 14 CFR Appendix D to Part 147 - Powerplant Curriculum Subjects

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Powerplant Curriculum Subjects D Appendix D to Part 147 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) SCHOOLS AND OTHER CERTIFICATED AGENCIES AVIATION MAINTENANCE TECHNICIAN SCHOOLS Pt. 147, App....

  4. 49 CFR Appendix A to Part 220 - Recommended Phonetic Alphabet

    Science.gov (United States)

    2010-10-01

    ...—JULIET K—KILO L—LIMA M—MIKE N—NOVEMBER O—OSCAR P—PAPA Q—QUEBEC R—ROMEO S—SIERRA T—TANGO U—UNIFORM V... appendix A of part 220 does not exist in 49 CFR parts 200 to 399, revised as of Oct. 1, 1997....

  5. Adenocarcinoid of the appendix presenting with metastases to the liver

    DEFF Research Database (Denmark)

    Bak, Martin; Jørgensen, L J

    1987-01-01

    A case of hepatomegalia due to multiple metastases of unknown origin to the liver is described. At autopsy the primary tumor, an adenocarcinoid tumor of the appendix, was identified along with multiple metastases to the lymph nodes and widespread peritoneal carcinoidosis. Hepatic metastases from an...... of the metastases of appendiceal adenocarcinoids is modulated by factors in the recipient organ....

  6. 29 CFR Appendix to Part 1440 - FIFRA Arbitration Rules

    Science.gov (United States)

    2010-07-01

    ... arbitrator, the Service will appoint an arbitrator in accordance with 29 CFR 1440.1 (a) and these rules... 29 Labor 4 2010-07-01 2010-07-01 false FIFRA Arbitration Rules Appendix to Part 1440 Labor Regulations Relating to Labor (Continued) FEDERAL MEDIATION AND CONCILIATION SERVICE ARBITRATION OF...

  7. 40 CFR Appendix II to Subpart V of... - Arbitration Rules

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 18 2010-07-01 2010-07-01 false Arbitration Rules II Appendix II to... Subpart V of Part 85—Arbitration Rules Part A—Pre-Hearing Section 1: Initiation of Arbitration Either party may commence an arbitration under these rules by filing at any regional office of the...

  8. 32 CFR Appendix A to Part 1288 - Decal Specifications

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 6 2010-07-01 2010-07-01 false Decal Specifications A Appendix A to Part 1288 National Defense Other Regulations Relating to National Defense DEFENSE LOGISTICS AGENCY MISCELLANEOUS... employees—Green. (2) The following additional colors will be used to categorize registration further:...

  9. 32 CFR Appendix F to Part 516 - Glossary

    Science.gov (United States)

    2010-07-01

    ... Defense Department of Defense (Continued) DEPARTMENT OF THE ARMY AID OF CIVIL AUTHORITIES AND PUBLIC RELATIONS LITIGATION Pt. 516, App. F Appendix F to Part 516—Glossary Abbreviations AAFES: Army and Air Force...: Armed Services Board of Contract Appeals AUSA: Assistant United States Attorney CFR: Code of...

  10. 44 CFR Appendix A to Part 18 - Certification Regarding Lobbying

    Science.gov (United States)

    2010-10-01

    ... 44 Emergency Management and Assistance 1 2010-10-01 2010-10-01 false Certification Regarding Lobbying A Appendix A to Part 18 Emergency Management and Assistance FEDERAL EMERGENCY MANAGEMENT AGENCY... its instructions. (3) The undersigned shall require that the language of this certification...

  11. 34 CFR Appendix A to Part 82 - Certification Regarding Lobbying

    Science.gov (United States)

    2010-07-01

    ... 34 Education 1 2010-07-01 2010-07-01 false Certification Regarding Lobbying A Appendix A to Part 82 Education Office of the Secretary, Department of Education NEW RESTRICTIONS ON LOBBYING Pt. 82... $10,000 and not more than $100,000 for each such failure. Statement for Loan Guarantees and...

  12. 32 CFR Appendix C to Part 80 - Hearing Procedures

    Science.gov (United States)

    2010-07-01

    ... such proceedings, at no cost to the government, by counsel and by persons with special knowledge or..., unless a discovery request under section D.2. of this appendix is pending. 2. Discovery a. Full and complete discovery shall be available to parties to the proceeding, with the Federal Rules of...

  13. Appendix H - GPRA06 industrial technologies program documentation

    Energy Technology Data Exchange (ETDEWEB)

    None, None

    2009-01-18

    The information provided in this appendix is based on the Industrial Technologies Program (ITP) report of the GPRA06 process, "GPRA06 Quality Metrics - Methodology and Results," Energetics Inc., October 25, 2004. The report includes additional methodological details and the actual off-line energy savings results submitted to the Office of Energy Efficiency and Renewable Energy (EERE).

  14. 40 CFR Appendix C to Part 112 - Substantial Harm Criteria

    Science.gov (United States)

    2010-07-01

    ... could cause injury (as defined at 40 CFR 112.2) to fish and wildlife and sensitive environments. For... 40 Protection of Environment 21 2010-07-01 2010-07-01 false Substantial Harm Criteria C Appendix C to Part 112 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) WATER PROGRAMS...

  15. 12 CFR Appendix A to Part 216 - Model Privacy Form

    Science.gov (United States)

    2010-01-01

    ... the FCRA and 12 CFR part 222, subpart C, with respect to the initial notice and opt-out and any... 12 Banks and Banking 2 2010-01-01 2010-01-01 false Model Privacy Form A Appendix A to Part 216 Banks and Banking FEDERAL RESERVE SYSTEM BOARD OF GOVERNORS OF THE FEDERAL RESERVE SYSTEM PRIVACY...

  16. 12 CFR Appendix A to Part 573 - Model Privacy Form

    Science.gov (United States)

    2010-01-01

    ... the model form under this part, must comply with section 624 of the FCRA and 12 CFR part 571, subpart... 12 Banks and Banking 5 2010-01-01 2010-01-01 false Model Privacy Form A Appendix A to Part 573 Banks and Banking OFFICE OF THRIFT SUPERVISION, DEPARTMENT OF THE TREASURY PRIVACY OF CONSUMER...

  17. 12 CFR Appendix A to Part 716 - Model Privacy Form

    Science.gov (United States)

    2010-01-01

    ... the model form under this part, must comply with section 624 of the FCRA and 12 CFR part 717, subpart... 12 Banks and Banking 6 2010-01-01 2010-01-01 false Model Privacy Form A Appendix A to Part 716 Banks and Banking NATIONAL CREDIT UNION ADMINISTRATION REGULATIONS AFFECTING CREDIT UNIONS PRIVACY...

  18. 32 CFR Appendix C to Part 86 - State Information

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 1 2010-07-01 2010-07-01 false State Information C Appendix C to Part 86 National Defense Department of Defense OFFICE OF THE SECRETARY OF DEFENSE PERSONNEL, MILITARY AND CIVILIAN... State Office Building, Des Moines, IA 50319 6 Release within State, COMM: 515-281-5138. State of...

  19. 46 CFR Appendix B to Part 154 - Stress Analyses Definitions

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Stress Analyses Definitions B Appendix B to Part 154...—Stress Analyses Definitions The following are the standard definitions of stresses for the analysis of an independent tank type B: Normal stress means the component of stress normal to the plane of...

  20. 14 CFR Appendix F to Part 25

    Science.gov (United States)

    2010-01-01

    ... finished or protected edge of the specimen but must be representative of the actual cross-section of the... material, if used, and dress covering) and assembly processes (representative seams and closures) intended... dress covering, is demonstrated to meet the requirements of this appendix using the oil burner test,...

  1. 49 CFR Appendix B to Part 192 - Qualification of Pipe

    Science.gov (United States)

    2010-10-01

    ... appendix B of part 192, see the List of CFR Sections Affected, which appears in the Finding Aids section of... Pipe I. Listed Pipe Specifications API 5L—Steel pipe, “API Specification for Line Pipe” (incorporated..., at least one test weld must be made for each 100 lengths of pipe. On pipe 4 inches (102...

  2. 49 CFR Appendix A to Part 236 - Civil Penalties 1

    Science.gov (United States)

    2010-10-01

    ..., MAINTENANCE, AND REPAIR OF SIGNAL AND TRAIN CONTROL SYSTEMS, DEVICES, AND APPLIANCES Pt. 236, App. A Appendix... device that functions as track relay not in its most restrictive state when train, locomotive, or car...,000 2,000 236.312Movable bridge, interlocking of signal appliances with bridge devices: (a)...

  3. 7 CFR Appendix A to Subpart A of... - Fee Schedule

    Science.gov (United States)

    2010-01-01

    ... institution of vocational education, which operates a program or programs of scholarly research. (2) The term... special methods such as express mail, etc. For services not covered by the FOIA or by this appendix... scholarly research (if the request is from an educational institution) or scientific research (if...

  4. 12 CFR Appendix B to Part 307 - Institution Letterhead

    Science.gov (United States)

    2010-01-01

    .... This Notice is being provided pursuant to 12 CFR 307.3. Please contact , at if additional information... 12 Banks and Banking 4 2010-01-01 2010-01-01 false Institution Letterhead B Appendix B to Part 307...—Institution Letterhead SUBJECT: Notice to Depositor of Voluntary Termination of Insured Status The...

  5. 12 CFR Appendix A to Part 307 - Transferring Institution Letterhead

    Science.gov (United States)

    2010-01-01

    .... A Appendix A to Part 307—Transferring Institution Letterhead SUBJECT: Certification of Total Assumption of Deposits This certification is being provided pursuant to 12 U.S.C. 1818(q) and 12 CFR 307.2... 12 Banks and Banking 4 2010-01-01 2010-01-01 false Transferring Institution Letterhead A...

  6. 41 CFR Appendix D to Chapter 301 - Glossary of Acronyms

    Science.gov (United States)

    2010-07-01

    ... of Standards and Technology NTE: Not to Exceed OBE: Online Self-service Booking Tool OCONUS: Outside... Appendix D to Chapter 301 Public Contracts and Property Management Federal Travel Regulation System...: Automated Teller Machine CAS: Commercial Aviation Service(s) CDW: Collision Damage Waiver CFR: Code...

  7. 40 CFR Appendix A to Subpart E of... - References

    Science.gov (United States)

    2010-07-01

    ...) AMBIENT AIR MONITORING REFERENCE AND EQUIVALENT METHODS Procedures for Testing Physical (Design) and... PM10â2.5 Pt. 53, Subpt. E, App. A Appendix A to Subpart E of Part 53—References (1) American National Standard Quality Systems—Model for Quality Assurance in Design, Development, Production, Installation,...

  8. Kentucky Consumer & Homemaking Education. Appendix for Curriculum Guide.

    Science.gov (United States)

    Bishop, Helen; And Others

    As the appendix for a series of curriculum guides for consumer and homemaking education on the secondary level in Kentucky, this booklet contains instructional activities for classroom use in conjunction with the units in the comprehensive curriculum guides. Included are games, puzzles, skits, quizzes, survey forms, checklists, and review sheets…

  9. 49 CFR Appendix B to Part 236 - Risk Assessment Criteria

    Science.gov (United States)

    2010-10-01

    ... results of the application of safety design principles as noted in Appendix C to this part. The MTTHE is... subsystem or component in the risk assessment. (f) How are processor-based subsystems/components assessed? (1) An MTTHE value must be calculated for each processor-based subsystem or component, or...

  10. 46 CFR Appendix A to Part 154 - Equivalent Stress

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Equivalent Stress A Appendix A to Part 154 Shipping...—Equivalent Stress I. Equivalent stress (σ c) is calculated by the following formula or another formula... normal stress in “x” direction. σy=total normal stress in “y” direction. τxy=total shear stress in...

  11. 20 CFR Appendix to Subpart D of... - Unknown Title

    Science.gov (United States)

    2010-04-01

    ... LUNG BENEFITS (1969- ) Total Disability or Death Due to Pneumoconiosis Pt. 410, Subpt. D, App. Appendix to Subpart D of Part 410 A miner with pneumoconiosis who meets or met one of the following sets of medical specifications, may be found to be totally disabled due to pneumoconiosis at the pertinent...

  12. 7 CFR Appendix A to Part 3015 - Definitions

    Science.gov (United States)

    2010-01-01

    ... CFR 620.2, 40 FR 12472, March 19, 1974), any other regional or interstate government entity, or any... AGRICULTURE UNIFORM FEDERAL ASSISTANCE REGULATIONS Pt. 3015, App. A Appendix A to Part 3015—Definitions... specifically, a county, municipality, city, town, township, local public authority, school district,...

  13. 10 CFR Appendix A to Part 34 - Radiographer Certification

    Science.gov (United States)

    2010-01-01

    ... 10 Energy 1 2010-01-01 2010-01-01 false Radiographer Certification A Appendix A to Part 34 Energy NUCLEAR REGULATORY COMMISSION LICENSES FOR INDUSTRIAL RADIOGRAPHY AND RADIATION SAFETY REQUIREMENTS FOR... of industrial radiography; 2. Make its membership available to the general public nationwide that...

  14. 12 CFR Appendix C to Part 360 - Deposit File Structure

    Science.gov (United States)

    2010-01-01

    ... Association. • 27 = Unincorporated Non-Profit. • • 28 = Other Commercial. CORPORATION • 29 = Business Trust... Non-Profit. • 33 = Incorporated Non-Profit. • 34 = Corporation. • 35 = Corporate Partnership. • 36... 12 Banks and Banking 4 2010-01-01 2010-01-01 false Deposit File Structure C Appendix C to Part...

  15. 12 CFR Appendix B to Part 363 - Illustrative Management Reports

    Science.gov (United States)

    2010-01-01

    ... 12 Banks and Banking 4 2010-01-01 2010-01-01 false Illustrative Management Reports B Appendix B to Part 363 Banks and Banking FEDERAL DEPOSIT INSURANCE CORPORATION REGULATIONS AND STATEMENTS OF GENERAL... total assets of $1 billion or more as of the beginning of its fiscal year, the assessment by...

  16. 22 CFR Appendix E to Part 62 - Unskilled Occupations

    Science.gov (United States)

    2010-04-01

    .... E Appendix E to Part 62—Unskilled Occupations For purposes of 22 CFR 514.22(c)(1), the following are...) Counter and Fountain Workers (18) Dining Room Attendants (19) Electric Truck Operators (20) Elevator... Operators and Handstitchers (43) Stock Room and Warehouse Workers (44) Streetcar and Bus Conductors...

  17. 12 CFR Appendix B to Part 205 - Federal Enforcement Agencies

    Science.gov (United States)

    2010-01-01

    ... ELECTRONIC FUND TRANSFERS (REGULATION E) Pt. 205, App. B Appendix B to Part 205—Federal Enforcement Agencies The following list indicates which Federal agency enforces Regulation E (12 CFR part 205) for... above Federal Trade Commission, Electronic Fund Transfers, Washington, D.C. 20580....

  18. 28 CFR Appendix A to Part 70 - Contract Provisions

    Science.gov (United States)

    2010-07-01

    ... NON-PROFIT ORGANIZATIONS Pt. 70, App. A Appendix A to Part 70—Contract Provisions All contracts... with 37 CFR part 401, “Rights to Inventions Made by Nonprofit Organizations and Small Business Firms... CFR part 60, “Office of Federal Contract Compliance Programs, Equal Employment Opportunity,...

  19. 32 CFR Appendix A to Part 636 - References

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 4 2010-07-01 2010-07-01 true References A Appendix A to Part 636 National...—References Publications and forms referenced in this part may be viewed at the Office of the Provost Marshall... 2507, Notice of Vehicle Impoundment Other References 8 U.S.C. 13. 40 U.S.C. 318a. Memorandum...

  20. 40 CFR Appendix A to Subpart F of... - References

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 5 2010-07-01 2010-07-01 false References A Appendix A to Subpart F of...) AMBIENT AIR MONITORING REFERENCE AND EQUIVALENT METHODS Procedures for Testing Performance Characteristics...—References (1) Marple, V.A., K.L. Rubow, W. Turner, and J.D. Spangler, Low Flow Rate Sharp Cut Impactors...

  1. 32 CFR Appendix E to Subpart M of... - References

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 3 2010-07-01 2010-07-01 true References E Appendix E to Subpart M of Part 552 National Defense Department of Defense (Continued) DEPARTMENT OF THE ARMY MILITARY RESERVATIONS AND...—References Army Regulations referenced in this subpart may be obtained from National Technical...

  2. 32 CFR Appendix to Part 281 - Claims Description

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 2 2010-07-01 2010-07-01 false Claims Description Appendix to Part 281 National Defense Department of Defense (Continued) OFFICE OF THE SECRETARY OF DEFENSE (CONTINUED) MISCELLANEOUS... Part 281—Claims Description The Secretary of Defense is authorized to perform the claim settlement...

  3. Torsion of an Epiploic Appendix Pretending as Acute Appendicitis

    Directory of Open Access Journals (Sweden)

    Kamran Ahmad Malik

    2010-07-01

    Full Text Available Torsion of an epiploic appendix is a rare surgical entity. Its unusual symptomatology, wide variation in physical findings and the absence of helpful laboratory and radiological studies makes it very difficult to diagnose pre-operatively. This is a report of this rare entity found in a patient upon diagnostic laparoscopy performed for suspected acute appendicitis

  4. 14 CFR Appendix K to Part 25 - Extended Operations (ETOPS)

    Science.gov (United States)

    2010-01-01

    ... airplane-engine combination has been evaluated under 14 CFR 25.1535 and found suitable for (identify... does not apply to airplanes with a required flight engineer. (b) APU design. If an APU is needed to comply with this appendix, the applicant must demonstrate that: (1) The reliability of the APU...

  5. 49 CFR Appendix C- to Part 544... - Appendix C- to Part 544 Motor Vehicle Rental and Leasing Companies (Including Licensees and...

    Science.gov (United States)

    2010-10-01

    ... Leasing Companies (Including Licensees and Franchisees) Subject to the Reporting Requirements of Part 544 C Appendix C- to Part 544 Motor Vehicle Rental and Leasing Companies (Including Licensees and... REPORTING REQUIREMENTS Pt. 544, App. C Appendix C— to Part 544 Motor Vehicle Rental and Leasing...

  6. Developing an Intelligent Automatic Appendix Extraction Method from Ultrasonography Based on Fuzzy ART and Image Processing

    Directory of Open Access Journals (Sweden)

    Kwang Baek Kim

    2015-01-01

    Full Text Available Ultrasound examination (US does a key role in the diagnosis and management of the patients with clinically suspected appendicitis which is the most common abdominal surgical emergency. Among the various sonographic findings of appendicitis, outer diameter of the appendix is most important. Therefore, clear delineation of the appendix on US images is essential. In this paper, we propose a new intelligent method to extract appendix automatically from abdominal sonographic images as a basic building block of developing such an intelligent tool for medical practitioners. Knowing that the appendix is located at the lower organ area below the bottom fascia line, we conduct a series of image processing techniques to find the fascia line correctly. And then we apply fuzzy ART learning algorithm to the organ area in order to extract appendix accurately. The experiment verifies that the proposed method is highly accurate (successful in 38 out of 40 cases in extracting appendix.

  7. 41 CFR Appendix A to Subpart A of... - 3-Key Points and Principles

    Science.gov (United States)

    2010-07-01

    ... Principles A Appendix A to Subpart A of Part 102 Public Contracts and Property Management Federal Property..., Subpt. A, App. A Appendix A to Subpart A of Part 102-3—Key Points and Principles This appendix provides... either “established” or “utilized” by an agency 102-3.25, 102-3.40(d), 102-3.40(f) 1. A local...

  8. Supplementary Appendix for: Constrained Perturbation Regularization Approach for Signal Estimation Using Random Matrix Theory

    KAUST Repository

    Suliman, Mohamed

    2016-01-01

    In this supplementary appendix we provide proofs and additional simulation results that complement the paper (constrained perturbation regularization approach for signal estimation using random matrix theory).

  9. Quark and lepton mass matrices with A4 family symmetry

    International Nuclear Information System (INIS)

    Realistic quark masses and mixing angles are obtained applying the successful A4 family symmetry for leptons, motivated by the quark-lepton assignments of SU(5). The A4 symmetry is suitable to give tri-bimaximal neutrino mixing matrix which is consistent with current experimental data. We study new scenario for the quark sector with the A4 symmetry. (author)

  10. 17 CFR 260.7a-4 - Calculation of time.

    Science.gov (United States)

    2010-04-01

    ... 17 Commodity and Securities Exchanges 3 2010-04-01 2010-04-01 false Calculation of time. 260.7a-4 Section 260.7a-4 Commodity and Securities Exchanges SECURITIES AND EXCHANGE COMMISSION (CONTINUED) GENERAL RULES AND REGULATIONS, TRUST INDENTURE ACT OF 1939 Rules Under Section 307 § 260.7a-4 Calculation...

  11. 26 CFR 1.25A-4 - Lifetime Learning Credit.

    Science.gov (United States)

    2010-04-01

    ... 26 Internal Revenue 1 2010-04-01 2010-04-01 true Lifetime Learning Credit. 1.25A-4 Section 1.25A-4... Rates During A Taxable Year § 1.25A-4 Lifetime Learning Credit. (a) Amount of the credit—(1) Taxable years beginning before January 1, 2003. Subject to the phaseout of the education tax credit described...

  12. Significance of the S100A4 protein in psoriasis

    DEFF Research Database (Denmark)

    Zibert, John R; Skov, Lone; Thyssen, Jacob P;

    2010-01-01

    The S100A4 protein is reported as a pivotal player in the tumor microenvironment with a metastasis-promoting function. Moreover, the upregulation of S100A4 is found in other non-malignant human disorders as cardiac and pulmonary systems and rheumatoid arthritis. In this study, we investigated...... of psoriasis. Furthermore, we revealed a massive release of the biologically active forms of S100A4 from psoriatic skin. Interestingly, we found stabilization (increase) of p53 in the basal layer of epidermis in close proximity to cells expressing S100A4. To examine the possible implication of S100A4...

  13. 40 CFR Appendix G to Subpart A of... - UNEP Recommendations for Conditions Applied to Exemption for Essential Laboratory and Analytical...

    Science.gov (United States)

    2010-07-01

    ... Applied to Exemption for Essential Laboratory and Analytical Uses G Appendix G to Subpart A of Part 82... STRATOSPHERIC OZONE Production and Consumption Controls Pt. 82, Subpt. A, App. G Appendix G to Subpart A of Part.... The provisions of Appendix G, paragraphs (1), (2), (3), and (4), regarding purity, mixing,...

  14. 50 CFR 23.46 - What are the requirements for registering a commercial breeding operation for Appendix-I wildlife...

    Science.gov (United States)

    2010-10-01

    ... a commercial breeding operation for Appendix-I wildlife and commercially exporting specimens? 23.46... registering a commercial breeding operation for Appendix-I wildlife and commercially exporting specimens? (a) Purpose. Article VII(4) of the Treaty provides that Appendix-I specimens that are bred in captivity...

  15. 10 CFR Appendix J to Part 50 - Primary Reactor Containment Leakage Testing for Water-Cooled Power Reactors

    Science.gov (United States)

    2010-01-01

    ... CFR 50.12, are still applicable to Option B of this appendix if necessary, unless specifically revoked...-Cooled Power Reactors J Appendix J to Part 50 Energy NUCLEAR REGULATORY COMMISSION DOMESTIC LICENSING OF PRODUCTION AND UTILIZATION FACILITIES Pt. 50, App. J Appendix J to Part 50—Primary Reactor...

  16. Quadrant III RFI draft report: Appendix J, Baseline risk assessment

    International Nuclear Information System (INIS)

    In accordance with the Risk Assessment Guidance for Superfund (U. S.EPA 1989), which states that background risk should be calculated separately from site-related risk in order to provide important information to the risk manager, this appendix assesses the human health risks associated with background levels of naturally occurring compounds in soil at the Portsmouth Gaseous Diffusion Plant (PORTS). This appendix is organized as follows: Background Conditions, in which the results of Geraghty ampersand Miller's work on characterizing background levels of naturally occurring compounds in soils is summarized; Identification of Exposure Pathways; Estimation of Environmental Concentrations; Estimation of Human Intake; Toxicity Assessment, and Risk Characterization, in which numerical estimates of carcinogenic and noncarcinogenic risk are calculated for each naturally occurring compound and potential exposure pathway

  17. Mucocele of the Appendix: Reports of a case for TAC

    International Nuclear Information System (INIS)

    The Mucocele of the appendix is a not very frequent entity and its diagnose pre-operative it is strange. To make diagnose in early form, it is important since lagoons of these lesions are wicked and their quick identification reduces the incidence of pseudo mixoma peritonea. Classically the diagnosis of the mucocele of the appendix is made by laparotomy when being suspected a appendicitis process inflammatory. They have been used for their diagnosis the simple badge of the abdomen, the colon for enema, the ultrasound, the computerized tomography and the gammagraphy with gallium-67 among others. This article describes a case, where the impression pre-operative diagnostic was made and in way non invasive

  18. Complete invagination of vermiform appendix with adenocarcinoma: case report

    International Nuclear Information System (INIS)

    Appendiceal intussusception is a very rare pathological condition, an incidence, as revealed by appendectomy specimens, of only 0.01 percent. There are various types among which complete invagination of the appendix is very rare. We encountered a case of intussusception of the appendix with complete invagination induced by appendiceal adenocarcinoma. A preoperative diagnosis of appendiceal adenocarcinoma and intussusception was not possible, but a final pathological report confirmed these conditions and retrospective analysis of a barium enema showed a finger-like filling defect of the cecum, a relatively specific finding in such cases. We describe a case involving a 39-year old man who one month earlier had noted the onset of pain in the right lower abdomen. (author)

  19. Endometrial Adenocarcinoma and Mucocele of the Appendix: An Unusual Coexistence

    Directory of Open Access Journals (Sweden)

    Ioannis Kalogiannidis

    2013-01-01

    Full Text Available Appendiceal mucocele is a rare clinical entity, which is however quite often associated with mucinous ovarian tumor. The coexistence of mucinous cystadenoma of the appendix and endometrial adenocarcinoma has not been reported before. A 49-year-old woman presented to our clinic with postmenopausal bleeding and no other symptom. Endometrial biopsy revealed endometrial adenocarcinoma of endometrioid type (grade I. Preoperative CT scanning revealed an appendiceal mucocele, and a colonoscopy confirmed the diagnosis. The patient underwent total abdominal hysterectomy with bilateral salpingo-oophorectomy and appendectomy. The final histopathological examination showed a mucinous cystadenoma of the appendix and confirmed the diagnosis of endometrioid endometrial adenocarcinoma. The coexistence of appendiceal mucocele and female genital tract pathology is rare. However, gynecologists should keep a high level of suspicion for such possible coexistence. Both the diagnostic approach and the therapeutic management should be multidisciplinary, most importantly with the involvement of general surgeons.

  20. Real time programming environment for Windows, Appendix A

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-04-05

    This appendix contains all source code for the RTProE system. The following file contents are included: pdb.h; hgen.l; hgen.y; igen.l; igen.y; pdm.l; pdm.y; rtdata.l; rtdata.y; framegen.c; librt.c; librt.h; rtsched.c; build.tsh; sde.tcl; rtsched.def.

  1. Radon-safe new buildings, documentation and technology development. Appendix

    International Nuclear Information System (INIS)

    The project is carried out as three separate subprojects, with subproject 1 as the principal project. Subproject 1 deals with field tests of radon penetration of different floor design (1A) and the effect of passive sub slab ventilation (1B). Subproject 2 deals with laboratory tests of material and design permeability, and subproject 3 deals with mapping of the radon potential and variation of a defined area. The appendix volume presents the detailed data for the results achieved in the project. (ln)

  2. A case of an intussuscepted neuroendocrine carcinoma of the appendix

    Institute of Scientific and Technical Information of China (English)

    Rachel E Thomas; Karen Maude; Olorunda Rotimi

    2006-01-01

    We have described a previously unreported entity of an intussuscepted neuroendocrine carcinoma of the appendix. Our patient was a 70-year-old man whose only complaint was insipient weight loss. Colonoscopy showed a malignant cecal "polyp", and an extended right hemicolectomy was performed. We have reviewed the literature on the causes of appendiceal intussusception and their appropriate treatment options, and clarified the classification of neuroendocrine tumors of the gastrointestinal tract.

  3. Appendix the theory of space with introduction, comments, and addenda

    CERN Document Server

    Kárteszi, F

    1987-01-01

    The epoch-making work of János Bolyai is presented here, together with a supplement outlining Hungarian political and science history to help the reader to get acquainted with the miserable fate of János Bolyai and with his intellectual world. A facsimile of a copy of Bolyai''s original 1831 Scientia Spatii (also known as the Appendix) is included, together with a translation. Comments and notes, and a survey of the effects of his work, complete the volume.

  4. Democratic Republic of the Congo; Selected Issues and Statistical Appendix

    OpenAIRE

    International Monetary Fund

    2003-01-01

    This Selected Issues paper and Statistical Appendix investigates the sources of growth in the Democratic Republic of the Congo (DRC) and evaluates the relative importance of productivity growth and factor accumulation. The analysis is extended to the key sectors of the economy: agriculture, mining, and transport. The paper assesses the DRC’s medium-term growth prospects and compares them with both the post-conflict growth experience to date and the growth objectives of the Poverty Reduction...

  5. Republic of Congo; Selected Issues and Statistical Appendix

    OpenAIRE

    International Monetary Fund

    2004-01-01

    This Selected Issues and Statistical Appendix paper outlines the recent developments in the political and security situation in Congo. It reviews economic performance during 1970–2003, including in the context of IMF-supported programs. The paper also reviews recent developments in public finance management, and examines the constraints on growth and poverty reduction. The sources of economic growth during 1970–2003 are analyzed. The paper also discusses the feasibility of an oil fiscal r...

  6. 12 CFR Appendix B to Part 360 - Debit/Credit File Structure

    Science.gov (United States)

    2010-01-01

    ... 12 Banks and Banking 4 2010-01-01 2010-01-01 false Debit/Credit File Structure B Appendix B to... POLICY RESOLUTION AND RECEIVERSHIP RULES Pt. 360, App. B Appendix B to Part 360—Debit/Credit File Structure This is the structure of the data file the FDIC will provide to apply debits and credits to...

  7. 24 CFR Appendix B to Part 3500 - Illustrations of Requirements of RESPA

    Science.gov (United States)

    2010-04-01

    ... HOUSING AND URBAN DEVELOPMENT REAL ESTATE SETTLEMENT PROCEDURES ACT Pt. 3500, App. B Appendix B to Part... 24 Housing and Urban Development 5 2010-04-01 2010-04-01 false Illustrations of Requirements of RESPA B Appendix B to Part 3500 Housing and Urban Development Regulations Relating to Housing and...

  8. 23 CFR Appendix C to Subpart D of... - Sample Show Cause Rescission

    Science.gov (United States)

    2010-04-01

    ... 23 Highways 1 2010-04-01 2010-04-01 false Sample Show Cause Rescission C Appendix C to Subpart D... Appendix C to Subpart D of Part 230—Sample Show Cause Rescission Certified Mail, Return Receipt Requested...-day show cause notice from this office for failing to implement the required contract...

  9. 40 CFR Appendix A to Subpart A of... - State Regulation of Nonroad Internal Combustion Engines

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 20 2010-07-01 2010-07-01 false State Regulation of Nonroad Internal Combustion Engines A Appendix A to Subpart A of Part 89 Protection of Environment ENVIRONMENTAL PROTECTION...-IGNITION ENGINES General Pt. 89, Subpt. A, App. A Appendix A to Subpart A of Part 89—State Regulation...

  10. 32 CFR Appendix A to Part 284 - Overview of Waiver Application Process

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 2 2010-07-01 2010-07-01 false Overview of Waiver Application Process A Appendix A to Part 284 National Defense Department of Defense (Continued) OFFICE OF THE SECRETARY OF... ALLOWANCES Pt. 284, App. A Appendix A to Part 284—Overview of Waiver Application Process A. Standards...

  11. 40 CFR Appendix A to Subpart E of... - Schedule for Developing Consent Agreements and Test Rules

    Science.gov (United States)

    2010-07-01

    ... Agreements and Test Rules A Appendix A to Subpart E of Part 790 Protection of Environment ENVIRONMENTAL... AGREEMENTS AND TEST RULES Exemptions From Test Rules Pt. 790, Subpt. E, App. A Appendix A to Subpart E of... required under section 4(a) of TSCA but agreement cannot be reached in timely manner on a consent...

  12. 5 CFR Appendix A to 5 Cfr Chapter... - Current Addresses and Geographic Jurisdictions

    Science.gov (United States)

    2010-01-01

    ... 5 Administrative Personnel 3 2010-01-01 2010-01-01 false Current Addresses and Geographic Jurisdictions A Appendix A to 5 CFR Chapter XIV Administrative Personnel FEDERAL LABOR RELATIONS AUTHORITY.... A Appendix A to 5 CFR Chapter XIV—Current Addresses and Geographic Jurisdictions (a) The...

  13. 40 CFR Appendix A to Subpart A of... - Class I Controlled Substances

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 17 2010-07-01 2010-07-01 false Class I Controlled Substances A Appendix A to Subpart A of Part 82 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED..., Subpt. A, App. A Appendix A to Subpart A of Part 82—Class I Controlled Substances Class 1...

  14. 40 CFR Appendix A to Subpart A of... - Restatement of Torts Section 757, Comment b

    Science.gov (United States)

    2010-07-01

    ..., Comment b A Appendix A to Subpart A of Part 350 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY... PROFESSIONALS Trade Secrecy Claims Pt. 350, Subpt. A, App. A Appendix A to Subpart A of Part 350—Restatement of Torts Section 757, Comment b b. Definition of trade secret. A trade secret may consist of any...

  15. 32 CFR Appendix A to Part 275 - Obtaining Basic Identifying Account Information

    Science.gov (United States)

    2010-07-01

    ... A Appendix A to Part 275 National Defense Department of Defense (Continued) OFFICE OF THE SECRETARY... FINANCIAL PRIVACY ACT OF 1978 Pt. 275, App. A Appendix A to Part 275—Obtaining Basic Identifying Account Information A. A DoD law enforcement office may issue a formal written request for basic identifying...

  16. 32 CFR Appendix A to Part 286 - Combatant Commands-Processing Procedures for FOIA Appeals

    Science.gov (United States)

    2010-07-01

    ... FOIA Appeals A Appendix A to Part 286 National Defense Department of Defense (Continued) OFFICE OF THE... REGULATION Pt. 286, App. A Appendix A to Part 286—Combatant Commands—Processing Procedures for FOIA Appeals.... AP1.2.4. Consult with other OSD and DoD Components that may have a significant interest in...

  17. 32 CFR Appendix A to Part 195 - Programs to Which This Part Applies

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 2 2010-07-01 2010-07-01 false Programs to Which This Part Applies A Appendix A...-EFFECTUATION OF TITLE VI OF THE CIVIL RIGHTS ACT OF 1964 Pt. 195, App. A Appendix A to Part 195—Programs to... consideration, or at a nominal or reduced consideration, on lands under the control of the Department of...

  18. 32 CFR Appendix A of Part 216 - Military Recruiting Sample Letter of Inquiry

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 2 2010-07-01 2010-07-01 false Military Recruiting Sample Letter of Inquiry A Appendix A of Part 216 National Defense Department of Defense (Continued) OFFICE OF THE SECRETARY OF... INSTITUTIONS OF HIGHER EDUCATION Information requirements. Pt. 216, App. A Appendix A of Part...

  19. 40 CFR Appendix A to Part 307 - Application for Preauthorization of a CERCLA Response Action

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 27 2010-07-01 2010-07-01 false Application for Preauthorization of a CERCLA Response Action A Appendix A to Part 307 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY... RESPONSE, COMPENSATION, AND LIABILITY ACT (CERCLA) CLAIMS PROCEDURES Pt. 307, App. A Appendix A to Part...

  20. 33 CFR Appendix A to Part 173 - Issuing Authorities and Reporting Authorities

    Science.gov (United States)

    2010-07-01

    ... Authorities A Appendix A to Part 173 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) BOATING SAFETY VESSEL NUMBERING AND CASUALTY AND ACCIDENT REPORTING Pt. 173, App. A Appendix A to Part 173—Issuing Authorities and Reporting Authorities (a) The State is the issuing...

  1. 32 CFR Appendix A to Part 272 - Principles for the Conduct and Support of Basic Research

    Science.gov (United States)

    2010-07-01

    ... Research A Appendix A to Part 272 National Defense Department of Defense (Continued) OFFICE OF THE... DEPARTMENT OF DEFENSE Pt. 272, App. A Appendix A to Part 272—Principles for the Conduct and Support of Basic... investments as a portfolio, with assessments of program success based on aggregate returns. There should be...

  2. 33 CFR Appendix A to Part 105 - Facility Vulnerability and Security Measures Summary (Form CG-6025)

    Science.gov (United States)

    2010-07-01

    ... Security Measures Summary (Form CG-6025) A Appendix A to Part 105 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY MARITIME SECURITY MARITIME SECURITY: FACILITIES Pt. 105, App. A Appendix A to Part 105—Facility Vulnerability and Security Measures Summary (Form CG-6025)...

  3. 39 CFR Appendix A to Subpart A of... - Mail Classification Schedule

    Science.gov (United States)

    2010-07-01

    ... 39 Postal Service 1 2010-07-01 2010-07-01 false Mail Classification Schedule A Appendix A to Subpart A of Part 3020 Postal Service POSTAL REGULATORY COMMISSION PERSONNEL PRODUCT LISTS Mail Classification Schedule Pt. 3020, Subpt. A, App. A Appendix A to Subpart A of Part 3020—Mail...

  4. 33 CFR Appendix A to Part 155 - Specifications for Shore Connection

    Science.gov (United States)

    2010-07-01

    ... Connection A Appendix A to Part 155 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND.... 155, App. A Appendix A to Part 155—Specifications for Shore Connection Item Description Dimension 1... equidistantly placed on a bolt circle of the above diameter, slotted to the flange periphery. The slot width...

  5. 32 CFR Appendix A to Part 203 - Technical Assistance for Public Participation Request Form

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 2 2010-07-01 2010-07-01 false Technical Assistance for Public Participation Request Form A Appendix A to Part 203 National Defense Department of Defense (Continued) OFFICE OF THE... DEFENSE ENVIRONMENTAL RESTORATION ACTIVITIES Pt. 203, App. A Appendix A to Part 203—Technical...

  6. 21 CFR Appendix A to Subpart A of... - List of Applicable Laws, Regulations, and Administrative Provisions

    Science.gov (United States)

    2010-04-01

    ... Regulations (CFR) Parts 1-99, Parts 200-299, Parts 500-599, and Parts 600-799. Relevant sections of the FDA... Administrative Provisions A Appendix A to Subpart A of Part 26 Food and Drugs FOOD AND DRUG ADMINISTRATION... Good Manufacturing Practices Pt. 26, Subpt. A, App. A Appendix A to Subpart A of Part 26—List...

  7. 44 CFR Appendix A to Part 9 - Decision-making Process for E.O. 11988

    Science.gov (United States)

    2010-10-01

    ... 44 Emergency Management and Assistance 1 2010-10-01 2010-10-01 false Decision-making Process for E.O. 11988 A Appendix A to Part 9 Emergency Management and Assistance FEDERAL EMERGENCY MANAGEMENT..., App. A Appendix A to Part 9—Decision-making Process for E.O. 11988 EC02FE91.074...

  8. 32 CFR Appendix A to Part 223 - Procedures for Identifying and Controlling DoD UCNI

    Science.gov (United States)

    2010-07-01

    ... UCNI A Appendix A to Part 223 National Defense Department of Defense (Continued) OFFICE OF THE... INFORMATION (DOD UCNI) Pt. 223, App. A Appendix A to Part 223—Procedures for Identifying and Controlling DoD UCNI A. General 1. The Secretary of Defense's authority for prohibiting the unauthorized disclosure...

  9. 45 CFR Appendix C to Part 1355 - Electronic Data Transmission Format

    Science.gov (United States)

    2010-10-01

    ... upload to its mainframe, Electronic File Transfer is an appropriate transmission mechanism. 4. Personal... 45 Public Welfare 4 2010-10-01 2010-10-01 false Electronic Data Transmission Format C Appendix C.... 1355, App. C Appendix C to Part 1355—Electronic Data Transmission Format All AFCARS data to be...

  10. 42 CFR Appendix A to Part 130 - Definition of HIV Infection or HIV

    Science.gov (United States)

    2010-10-01

    ... 42 Public Health 1 2010-10-01 2010-10-01 false Definition of HIV Infection or HIV A Appendix A to... PAYMENTS RICKY RAY HEMOPHILIA RELIEF FUND PROGRAM Pt. 130, App. A Appendix A to Part 130—Definition of HIV Infection or HIV ER31MY00.000 ER31MY00.001...

  11. 16 CFR Appendix H to Part 305 - Cooling Performance and Cost for Central Air Conditioners

    Science.gov (United States)

    2010-01-01

    ... 16 Commercial Practices 1 2010-01-01 2010-01-01 false Cooling Performance and Cost for Central Air Conditioners H Appendix H to Part 305 Commercial Practices FEDERAL TRADE COMMISSION REGULATIONS UNDER SPECIFIC... RULEâ) Pt. 305, App. H Appendix H to Part 305—Cooling Performance and Cost for Central Air...

  12. 33 CFR Appendix G to Part 157 - Timetables for Application of Double Hull Requirements

    Science.gov (United States)

    2010-07-01

    ... June 30, 1990, and that qualifies for documentation under 46 CFR subpart 67.19 before January 1, 1994... Double Hull Requirements G Appendix G to Part 157 Navigation and Navigable Waters COAST GUARD, DEPARTMENT... RELATING TO TANK VESSELS CARRYING OIL IN BULK Pt. 157, App. G Appendix G to Part 157—Timetables...

  13. 32 CFR Appendix G to Part 275 - Releasing Information Obtained From Financial Institutions

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 2 2010-07-01 2010-07-01 false Releasing Information Obtained From Financial Institutions G Appendix G to Part 275 National Defense Department of Defense (Continued) OFFICE OF THE... FINANCIAL PRIVACY ACT OF 1978 Pt. 275, App. G Appendix G to Part 275—Releasing Information Obtained...

  14. 39 CFR Appendix A to Part 3000 - Code of Ethics For Government Service

    Science.gov (United States)

    2010-07-01

    ... 39 Postal Service 1 2010-07-01 2010-07-01 false Code of Ethics For Government Service A Appendix A.... A Appendix A to Part 3000—Code of Ethics For Government Service Resolved by the House of Representatives (the Senate concurring), That it is the sense of the Congress that the following Code of...

  15. 34 CFR Appendix to Part 73 - Code of Ethics for Government Service

    Science.gov (United States)

    2010-07-01

    ... 34 Education 1 2010-07-01 2010-07-01 false Code of Ethics for Government Service Appendix to Part.... Appendix to Part 73—Code of Ethics for Government Service Any person in Government service should: Put... Code of Ethics was unanimously passed by the United States Congress on June 27, 1980, and signed...

  16. 40 CFR Appendix II to Part 1048 - Large Spark-ignition (SI) Composite Transient Cycle

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 32 2010-07-01 2010-07-01 false Large Spark-ignition (SI) Composite Transient Cycle II Appendix II to Part 1048 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY.... 1048, App. II Appendix II to Part 1048—Large Spark-ignition (SI) Composite Transient Cycle...

  17. 7 CFR Appendix C to Part 225 - Child Nutrition (CN) Labeling Program

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 4 2010-01-01 2010-01-01 false Child Nutrition (CN) Labeling Program C Appendix C to... SERVICE, DEPARTMENT OF AGRICULTURE CHILD NUTRITION PROGRAMS SUMMER FOOD SERVICE PROGRAM Pt. 225, App. C Appendix C to Part 225—Child Nutrition (CN) Labeling Program 1. The Child Nutrition (CN) Labeling...

  18. 7 CFR Appendix C to Part 226 - Child Nutrition (CN) Labeling Program

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    2010-01-01

    ... 7 Agriculture 4 2010-01-01 2010-01-01 false Child Nutrition (CN) Labeling Program C Appendix C to... SERVICE, DEPARTMENT OF AGRICULTURE CHILD NUTRITION PROGRAMS CHILD AND ADULT CARE FOOD PROGRAM Pt. 226, App. C Appendix C to Part 226—Child Nutrition (CN) Labeling Program 1. The Child Nutrition (CN)...

  19. 7 CFR Appendix C to Part 220 - Child Nutrition (CN) Labeling Program

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    2010-01-01

    ... 7 Agriculture 4 2010-01-01 2010-01-01 false Child Nutrition (CN) Labeling Program C Appendix C to... SERVICE, DEPARTMENT OF AGRICULTURE CHILD NUTRITION PROGRAMS SCHOOL BREAKFAST PROGRAM Pt. 220, App. C Appendix C to Part 220—Child Nutrition (CN) Labeling Program 1. The Child Nutrition (CN) Labeling...

  20. 7 CFR Appendix C to Part 210 - Child Nutrition Labeling Program

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 4 2010-01-01 2010-01-01 false Child Nutrition Labeling Program C Appendix C to Part..., DEPARTMENT OF AGRICULTURE CHILD NUTRITION PROGRAMS NATIONAL SCHOOL LUNCH PROGRAM Pt. 210, App. C Appendix C to Part 210—Child Nutrition Labeling Program 1. The Child Nutrition (CN) Labeling Program is...

  1. 14 CFR Appendix F to Part 43 - ATC Transponder Tests and Inspections

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    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false ATC Transponder Tests and Inspections F Appendix F to Part 43 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT MAINTENANCE, PREVENTIVE MAINTENANCE, REBUILDING, AND ALTERATION Pt. 43, App. F Appendix F to...

  2. 14 CFR Appendix B to Part 43 - Recording of Major Repairs and Major Alterations

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    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Recording of Major Repairs and Major Alterations B Appendix B to Part 43 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT MAINTENANCE, PREVENTIVE MAINTENANCE, REBUILDING, AND ALTERATION Pt. 43, App. B Appendix...

  3. 14 CFR Appendix E to Part 43 - Altimeter System Test and Inspection

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    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Altimeter System Test and Inspection E Appendix E to Part 43 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT MAINTENANCE, PREVENTIVE MAINTENANCE, REBUILDING, AND ALTERATION Pt. 43, App. E Appendix E to...

  4. 21 CFR Appendix D to Part 101 - Nutrition Facts for Cooked Fish

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 2 2010-04-01 2010-04-01 false Nutrition Facts for Cooked Fish D Appendix D to Part 101 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) FOOD FOR HUMAN CONSUMPTION FOOD LABELING Pt. 101, App. D Appendix D to Part 101—Nutrition...

  5. 21 CFR Appendix C to Part 101 - Nutrition Facts for Raw Fruits and Vegetables

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    2010-04-01

    ... 21 Food and Drugs 2 2010-04-01 2010-04-01 false Nutrition Facts for Raw Fruits and Vegetables C Appendix C to Part 101 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) FOOD FOR HUMAN CONSUMPTION FOOD LABELING Pt. 101, App. C Appendix C to Part 101—Nutrition...

  6. 43 CFR Appendix A to Part 418 - Calculation of Efficiency Equation

    Science.gov (United States)

    2010-10-01

    ... 43 Public Lands: Interior 1 2010-10-01 2010-10-01 false Calculation of Efficiency Equation A Appendix A to Part 418 Public Lands: Interior Regulations Relating to Public Lands BUREAU OF RECLAMATION.... 418, App. A Appendix A to Part 418—Calculation of Efficiency Equation ER18DE97.008 ER18DE97.009...

  7. 40 CFR Appendix Vii to Part 86 - Standard Bench Cycle (SBC)

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    2010-07-01

    ... 40 Protection of Environment 19 2010-07-01 2010-07-01 false Standard Bench Cycle (SBC) VII Appendix VII to Part 86 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS.... VII Appendix VII to Part 86—Standard Bench Cycle (SBC) 1. The standard bench aging...

  8. 12 CFR Appendix A to Subpart A of... - Federal Home Loan Banks

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    2010-01-01

    ... District 10 (Colorado, Kansas, Nebraska, Oklahoma) Federal Home Loan Bank of Topeka One Security Benefit... 12 Banks and Banking 7 2010-01-01 2010-01-01 false Federal Home Loan Banks A Appendix A to Subpart... Board Pt. 905, Subpt. A, App. A Appendix A to Subpart A of Part 905—Federal Home Loan Banks Federal...

  9. 31 CFR Appendix H to Subpart A of... - United States Mint

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    2010-07-01

    ... deny records. Appellate determinations under 31 CFR 1.5(i) with respect to records of the United States... 31 Money and Finance: Treasury 1 2010-07-01 2010-07-01 false United States Mint H Appendix H to... RECORDS Freedom of Information Act Pt. 1, Subpt. A, App. H Appendix H to Subpart A of Part 1—United...

  10. 34 CFR Appendix B to Part 403 - Examples for 34 CFR 403.194-Comparability Requirements

    Science.gov (United States)

    2010-07-01

    ... TECHNOLOGY EDUCATION PROGRAM Pt. 403, App. B Appendix B to Part 403—Examples for 34 CFR 403.194—Comparability... 34 Education 3 2010-07-01 2010-07-01 false Examples for 34 CFR 403.194-Comparability Requirements B Appendix B to Part 403 Education Regulations of the Offices of the Department of...

  11. 19 CFR Appendix D to Part 113 - Importer Security Filing Bond

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    2010-04-01

    ...) agrees to comply with all Importer Security Filing requirements set forth in 19 CFR part 149, including... 19 Customs Duties 1 2010-04-01 2010-04-01 false Importer Security Filing Bond D Appendix D to Part... THE TREASURY CUSTOMS BONDS Pt. 113, App. D Appendix D to Part 113—Importer Security Filing Bond...

  12. 16 CFR Appendix D2 to Part 305 - Water Heaters-Electric

    Science.gov (United States)

    2010-01-01

    ... 16 Commercial Practices 1 2010-01-01 2010-01-01 false Water Heaters-Electric D2 Appendix D2 to... PRODUCTS REQUIRED UNDER THE ENERGY POLICY AND CONSERVATION ACT (âAPPLIANCE LABELING RULEâ) Pt. 305, App. D2 Appendix D2 to Part 305—Water Heaters—Electric Range Information CAPACITY FIRST HOUR RATING Range...

  13. 12 CFR Appendix C to Part 334 - Model Forms for Opt-Out Notices

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    2010-01-01

    ... 12 Banks and Banking 4 2010-01-01 2010-01-01 false Model Forms for Opt-Out Notices C Appendix C to Part 334 Banks and Banking FEDERAL DEPOSIT INSURANCE CORPORATION REGULATIONS AND STATEMENTS OF GENERAL POLICY FAIR CREDIT REPORTING Pt. 334, App. C Appendix C to Part 334—Model Forms for Opt-Out Notices...

  14. 15 CFR Appendix A to Subpart L of... - Flower Garden Banks National Marine Sanctuary Boundary Coordinates

    Science.gov (United States)

    2010-01-01

    ... Sanctuary Boundary Coordinates A Appendix A to Subpart L of Part 922 Commerce and Foreign Trade Regulations... 922—Flower Garden Banks National Marine Sanctuary Boundary Coordinates This appendix contains a second set of boundary coordinates using the geographic positions of the North American Datum of 1983 (NAD...

  15. 15 CFR Appendix A to Subpart K of... - Cordell Bank National Marine Sanctuary Boundary Coordinates

    Science.gov (United States)

    2010-01-01

    ... Boundary Coordinates A Appendix A to Subpart K of Part 922 Commerce and Foreign Trade Regulations Relating...—Cordell Bank National Marine Sanctuary Boundary Coordinates Coordinates listed in this Appendix are unprojected (Geographic Coordinate System) and based on the North American Datum of 1983 (NAD83)....

  16. 15 CFR Appendix B to Subpart H of... - 2 nmi From the Farallon Islands Boundary Coordinates

    Science.gov (United States)

    2010-01-01

    ... 15 Commerce and Foreign Trade 3 2010-01-01 2010-01-01 false 2 nmi From the Farallon Islands Boundary Coordinates B Appendix B to Subpart H of Part 922 Commerce and Foreign Trade Regulations Relating... 922—2 nmi From the Farallon Islands Boundary Coordinates Coordinates listed in this Appendix...

  17. 15 CFR Appendix I to Subpart P of... - Florida Keys National Marine Sanctuary Boundary Coordinates

    Science.gov (United States)

    2010-01-01

    ... Boundary Coordinates I Appendix I to Subpart P of Part 922 Commerce and Foreign Trade Regulations Relating...—Florida Keys National Marine Sanctuary Boundary Coordinates (Appendix Based on North American Datum of... points at the following coordinates: (i) 25 degrees 34 minutes north latitude, 80 degrees 04 minutes...

  18. 38 CFR Appendix A to Part 41 - Data Collection Form (Form SF-SAC)

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    2010-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 2 2010-07-01 2010-07-01 false Data Collection Form (Form SF-SAC) A Appendix A to Part 41 Pensions, Bonuses, and Veterans' Relief DEPARTMENT OF VETERANS.... Appendix A to Part 41—Data Collection Form (Form SF-SAC) Note: Data Collection Form SF-SAC and...

  19. 14 CFR Appendix B to Part 135 - Airplane Flight Recorder Specifications

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane Flight Recorder Specifications B Appendix B to Part 135 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION.... B Appendix B to Part 135—Airplane Flight Recorder Specifications Parameters Range Installed system...

  20. 14 CFR Appendix E to Part 91 - Airplane Flight Recorder Specifications

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 2 2010-01-01 2010-01-01 false Airplane Flight Recorder Specifications E Appendix E to Part 91 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION... Appendix E to Part 91—Airplane Flight Recorder Specifications Parameters Range Installed system 1...