WorldWideScience

Sample records for bluff bodies

  1. Endwall convective heat transfer for bluff bodies

    DEFF Research Database (Denmark)

    Wang, Lei; Salewski, Mirko; Sundén, Bengt;

    2012-01-01

    The endwall heat transfer characteristics of forced flow past bluff bodies have been investigated using liquid crystal thermography (LCT). The bluff body is placed in a rectangular channel with both its ends attached to the endwalls. The Reynolds number varies from 50,000 to 100,000. In this study......, a single bluff body and two bluff bodies arranged in tandem are considered. Due to the formation of horseshoe vortices, the heat transfer is enhanced appreciably for both cases. However, for the case of two bluff bodies in tandem, it is found that the presence of the second bluff body decreases the heat...... transfer as compared to the case of a single bluff body. In addition, the results show that the heat transfer exhibits Reynolds number similarity. For a single bluff body, the Nusselt number profiles collapse well when the data are scaled by Re0.55; for two bluff bodies arranged in tandem, the heat...

  2. Study on Hydrodynamic Vibration in Dual Bluff Body Vortex Flowmeter

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    The characteristics of the dual bluff body vortex shedding is investigated, and the possibility to use dual bluff body combinations to strengthen the hydrodynamic vibration around the bluff body objects is explored. The numerical and experimental approaches were utilized to examine the time dependent flow field and the pressure oscillation around the bluff bodies. The numerical data were obtained by the advanced large eddy simulation model. The experiment was conducted on a laboratory scale of Karman vortex flowmeter with 40 mm diameter. It is revealed that the optimized dual bluff body combinations strengthened the hydrodynamic vibration. It was also found that the hydrodynamic vibration with 180° phase difference occurred at the axisymmetric points of circular pipe on the lateral faces of the equilateral triangle-section bluff bodies. Using the dual bluff body configuration and the differential sensing technique, a novel prototype of vortex flowmeter with excellent noise immunity and improved sensibility was developed.

  3. Bluff Body Flow Control Using Plasma Actuators

    Science.gov (United States)

    Thomas, Flint

    2005-11-01

    In this study, the use of single dielectric barrier discharge plasma actuators for the control of bluff body flow separation is investigated. In particular, surface mounted plasma actuators are used to reduce both drag and unsteady vortex shedding from circular cylinders in cross-flow. It is demonstrated that the plasma-induced surface blowing gives rise to a local Coanda effect that promotes the maintenance of flow attachment. Large reductions in vortex shedding and drag are demonstrated for Reynolds numbers ˜ 10^410^5. Both steady and unsteady plasma-induced surface blowing is explored. Results are presented from experiments involving both two and four surface mounted actuators.

  4. Particle Methods in Bluff Body Aerodynamics

    DEFF Research Database (Denmark)

    Rasmussen, Johannes Tophøj

    Fluid-structure interaction is studied numerically in academics and the industry. Shear computational power alone is insufficient to accurately resolve the complex dynamics of high Reynolds number fluid flow. Therefore the development of more efficient and applicable computational algorithms...... of the flow. The method is validated by simulating the turbulent flow past a flat plate and past the Great Belt East bridge, the Øresund bridge and the Busan-Geoje bridge. The dissertation introduces a novel multiresolution vortex-in-cell algorithm using patches of varying resolution. The Poisson equation....... The implementation is two-dimensional and sequential. The implementation is validated against the analytic solution to the Perlman test case and by free-space simulations of the onset flow around fixed and rotating circular cylinders and bluff body flows around bridge sections. Finally a three-dimensional vortex...

  5. Gas Turbine Engine Staged Fuel Injection Using Adjacent Bluff Body and Swirler Fuel Injectors

    Science.gov (United States)

    Snyder, Timothy S. (Inventor)

    2015-01-01

    A fuel injection array for a gas turbine engine includes a plurality of bluff body injectors and a plurality of swirler injectors. A control operates the plurality of bluff body injectors and swirler injectors such that bluff body injectors are utilized without all of the swirler injectors at least at low power operation. The swirler injectors are utilized at higher power operation.

  6. Physics-based aeroacoustic modelling of bluff-bodies

    OpenAIRE

    Peers, Edward

    2009-01-01

    In this work physics-based modelling of bluff-body noise was performed with application to landing gear noise production. The landing gear is a primary contributor to airframe noise during approach. Noise is primarily generated from the unsteady pressures resulting from the turbulent flow around various components. The research was initiated in response to the need for an improved understanding of landing gear noise prediction tools. A computational approach was adopted so that the noise ...

  7. Piezoelectric energy harvesting from transverse galloping of bluff bodies

    Science.gov (United States)

    Abdelkefi, A.; Hajj, M. R.; Nayfeh, A. H.

    2013-01-01

    The concept of harvesting energy from transverse galloping oscillations of a bluff body with different cross-section geometries is investigated. The energy is harvested by attaching a piezoelectric transducer to the transverse degree of freedom of the body. The power levels that can be generated from these vibrations and the variations of these levels with the load resistance, cross-section geometry, and freestream velocity are determined. A representative model that accounts for the transverse displacement of the bluff body and harvested voltage is presented. The quasi-steady approximation is used to model the aerodynamic loads. A linear analysis is performed to determine the effects of the electrical load resistance and the cross-section geometry on the onset of galloping, which is due to a Hopf bifurcation. The normal form of this bifurcation is derived to determine the type (supercritical or subcritical) of the instability and to characterize the effects of the linear and nonlinear parameters on the level of harvested power near the bifurcation. The results show that the electrical load resistance and the cross-section geometry affect the onset speed of galloping. The results also show that the maximum levels of harvested power are accompanied with minimum transverse displacement amplitudes for all considered (square, D, and triangular) cross-section geometries, which points to the need for performing a coupled analysis of the system.

  8. A numerical analysis of the unsteady flow past bluff bodies

    Science.gov (United States)

    Fernando, M. S. U. K.; Modi, V. J.

    1990-01-01

    The paper describes in detail a relatively sophisticated numerical approach, using the Boundary Element Method in conjunction with the Discrete Vortex Model, to represent the complex unsteady flow field around a bluff body with separating shear layers. Important steps in the numerical analysis of this challenging problem are discussed and a performance evaluation algorithm established. Of considerable importance is the effect of computational parameters such as number of elements representing the geometry, time-step size, location of the nascent vortices, etc., on the accuracy of results and the associated cost. As an example, the method is applied to the analysis of the flow around a stationary Savonius rotor. A detailed parametric study provides fundamental information concerning the starting torque time histories, evolution of the wake, Strouhal number, etc. A comparison with the wind tunnel test data shows remarkable correlation suggesting considerable promise for the approach.

  9. Influence of diffuser angle on a bluff body in ground effect

    OpenAIRE

    Ruhrmann, Andreas; Xin ZHANG

    2003-01-01

    The forces and pressures on a generic bluff body in ground effect were investigated. The bluff-body model was equipped with interchangeable underbody diffuser ramps and side plates. Five different diffuser angles were tested: 5, 10, 15, 17, and 20 deg to the horizontal. The experiments were undertaken in a low-speed wind tunnel equipped with a moving ground. Load cells, pressure taps, and surface flow visualization were the techniques used to evaluate the flow field. The flow field is charact...

  10. Experimental and Numerical Investigation of Flow Structures around Cylindrical Bluff Bodies

    OpenAIRE

    Yagmur Sercan; Dogan Sercan; Aksoy Muharrem H.; Canli Eyub; Ozgoren Muammer

    2015-01-01

    The understanding and quantitative prediction of velocity and pressure fluctuations in turbulent flows around such bluff bodies have been evolving over the years. The main aim of the present work is to investigate experimentally and numerically the flow field in the wake region of different bluff bodies such as circular, square and triangle cross section cylinders placed horizontally perpendicular to the uniform flow. The experimental studies were performed by Particle Image Velocimetry (PIV)...

  11. The anchoring mechanism of a bluff-body stabilized laminar premixed flame

    KAUST Repository

    Kedia, Kushal S.

    2014-09-01

    The objective of this work is to investigate the mechanism of the laminar premixed flame anchoring near a heat-conducting bluff-body. We use unsteady, fully resolved, two-dimensional simulations with detailed chemical kinetics and species transport for methane-air combustion. No artificial flame anchoring boundary conditions were imposed. Simulations show a shear-layer stabilized flame just downstream of the bluff-body, with a recirculation zone formed by the products of combustion. A steel bluff-body resulted in a slightly larger recirculation zone than a ceramic bluff-body; the size of which grew as the equivalence ratio was decreased. A significant departure from the conventional two-zone flame-structure is shown in the anchoring region. In this region, the reaction zone is associated with a large negative energy convection (directed from products to reactants) resulting in a negative flame-displacement speed. It is shown that the premixed flame anchors at an immediate downstream location near the bluff-body where favorable ignition conditions are established; a region associated with (1) a sufficiently high temperature impacted by the conjugate heat exchange between the heat-conducting bluff-body and the hot reacting flow and (2) a locally maximum stoichiometry characterized by the preferential diffusion effects. © 2014 The Combustion Institute.

  12. Vortex dynamics and flapping patterns of the inverted flag with a bluff body

    Science.gov (United States)

    Kim, Hyeonseong; Kim, Junyoung; Kim, Daegyoum

    2015-11-01

    Flow-induced vibration of flexible structures for energy harvesting has drawn attention recently. The inverted flag whose trailing edge is clamped and leading edge is free to move was known to self-excite in a uniform flow of both water and air. In this study, we investigated the effect of an upstream bluff body, a flat plate, on the dynamics of the downstream inverted flag. Periodic vortical structures created by an upstream bluff body make the dynamics of the inverted flag quite different from those of the inverted flag without the bluff body. We examined the motion of the inverted flag by varying the relative displacement of the inverted flag from the bluff body and their relative size. Our results show that the inverted flag can flap with higher frequency and larger amplitude with the upstream bluff body. We also compared the dynamics of the inverted flag with those of the general flag with the upstream bluff body. In order to better understand the dynamics of the flag, the analysis of the flow patterns using particle image velocimetry was also conducted.

  13. Direct numerical simulation of bluff-body-stabilized premixed flames

    KAUST Repository

    Arias, Paul G.

    2014-01-10

    To enable high fidelity simulation of combustion phenomena in realistic devices, an embedded boundary method is implemented into direct numerical simulations (DNS) of reacting flows. One of the additional numerical issues associated with reacting flows is the stable treatment of the embedded boundaries in the presence of multicomponent species and reactions. The implemented method is validated in two test con gurations: a pre-mixed hydrogen/air flame stabilized in a backward-facing step configuration, and reactive flows around a square prism. The former is of interest in practical gas turbine combustor applications in which the thermo-acoustic instabilities are a strong concern, and the latter serves as a good model problem to capture the vortex shedding behind a bluff body. In addition, a reacting flow behind the square prism serves as a model for the study of flame stabilization in a micro-channel combustor. The present study utilizes fluid-cell reconstruction methods in order to capture important flame-to-solid wall interactions that are important in confined multicomponent reacting flows. Results show that the DNS with embedded boundaries can be extended to more complex geometries without loss of accuracy and the high fidelity simulation data can be used to develop and validate turbulence and combustion models for the design of practical combustion devices.

  14. Numerical simulation of separated flows past bluff bodies

    Science.gov (United States)

    Alexandrou, Andreas Neophytou

    1986-12-01

    The steady two-dimensional flow past bluff bodies is simulated numerically using a hybrid Eulerian-Lagrangian model. The boundary layer effects, such as the location of the separation points and the rate of the generation of vorticity, are determined by a boundary layer solver. This solver uses Prandtl's boundary layer equations transformed by the Falkner-Skan transformation and then solved using a cubic spline approximation and a mean weighted residual technique. The vorticity generated at separation is discretized into elemental point vortices and convected downstream into the wake in a Lagrangian manner. The wake is modeled in a finite Eulerian computational domain using a modified Cloud-in-Cell (CIC) method. The velocity field at each time step is obtained as a solution to the rotationality condition using the finite element method in a cartesian mesh with nine-node elements and biquadratic shape functions. The biquadratic shape functions introduce a higher order interpolation scheme for the distribution of the vorticity at the nodal points than the bilinear (area) interpolation used in the original CIC method. The higher order interpolation as used in the CIC formulation performs better than the bilinear interpolation of the original method. This is demonstrated by the simulation of an isolated Rankine vortex. The ability of the CIC method to simulate the dynamics of vortex structures is also tested for the cases of flow past a flat plate and a circular cylinder.

  15. Investigation of vortical flow over bluff bodies with base cavities

    Institute of Scientific and Technical Information of China (English)

    Shu-Cheng Pan; Jin-Sheng Cai

    2012-01-01

    Based on our previous research about drag reduction in term of the base cavity length using two dimensional simulations,this paper describes a numerical study of a bluff body of which the number of base cavities is successively increased and the cavity geometries are also modified to assume different shapes.Here we attempt to find an effective configuration to reduce the drag by increasing the number of base cavities.The numerical simulations examining varied number of base cavities reveal the presence of different strength of vortices in the wake zone which is the reason why the drag coefficients are distinctly different for different cases.In the case with double and triple rectangular cavities,we use the pressure contours snapshots at successive time instants to describe the wake evolution.We further investigate the effect of variable base cavity shapes for a constant cavity length at an identical time instant.A total of two different geometries of base cavities are discussed here:the rectangular and the sinusoidal cavities with sharp and rounded trailing edges,respectively.The numerical results reveal that the former is an effective drag reduction configuration which can produce a significant base pressure recovery corresponding to the strength of the vortices shown in the pressure contour figures.While the latter shows no obvious reduction in drag coefficient and a similar intensity of vortex in the wake zone compared with the unmodified case.Reductions in drag are observed for all the investigated cavity configurations,and additionally it is found that the magnitude of the reduction bears a direct relationship with the number of the cavities up to a certain minimum value.

  16. DNS of turbulent flow past a bluff body with a compliant tensegrity surface

    Science.gov (United States)

    Karandikar, Anish; Bewley, Thomas

    2007-11-01

    Direct numerical simulation (DNS) is used to study turbulent incompressible flow past a bluff body with a compliant surface. We use a 3D time-dependent coordinate transformation to account for the motion of the bluff body surface. Spatially, the flow domain is discretized using a dealiased pseudospectral method in the axial and azimuthal directions, while the radial (wall-normal) direction is discretized using a finite difference scheme. The grid is stretched in the azimuthal direction, which is handled spectrally. This leads to a unique challenge when solving the Poisson equation in the fractional step method for the time march, which we address with both multigrid and preconditioned BiCGStab algorithms. We are presently extending this flow code with a model for the compliant bluff body surface based on the ``tensegrity fabric'' paradigm which combines compressive members (bars) and tensile members (tendons) in a stable, flexible network.

  17. Wall effect on fluid-structure interactions of a tethered bluff body

    Science.gov (United States)

    Sharma, Sumant; Raghav, Vrishank; Komerath, Narayanan; Smith, Marilyn

    2013-11-01

    Wind tunnel experiments have shown an unexplained amplification of the free motion of a tethered bluff body in a small wind tunnel relative to that in a large wind tunnel. The influence of wall proximity on fluid-structure interaction is explored using a compound pendulum motion in the plane orthogonal to a steady freestream with a doublet model for aerodynamic forces. Wall proximity amplifies a purely symmetric single degree of freedom oscillation with the addition of an out-of-phase force. The success of this simple level of simulation enables progress to develop metrics for unsteady wall interference in dynamic testing of tethered bluff bodies.

  18. Simulation of flow around bluff bodies and bridge deck sections using CFD

    OpenAIRE

    Liaw, Kai

    2005-01-01

    This thesis focuses on the simulation of flow around bluff bodies and bridge deck sections, in which unsteady nature and vortex shedding of flow are commonly found, using computational fluid dynamics (CFD). Various turbulence models have been tested to develop understanding and proper modelling techniques for the flow around such bodies. Throughout the thesis, the turbulence models employed, mainly large eddy simulation (LES) and detached eddy simulation (DES), have been validated through...

  19. Transition to bluff body dynamics in the wake of vertical axis turbines

    Science.gov (United States)

    Araya, Daniel; Dabiri, John

    2015-11-01

    A unifying characteristic among bluff bodies is a similar wake structure independent of the shape of the body. We present experimental data to demonstrate that the wake of a vertical axis wind/water turbine (VAWT) shares similar features to that of a bluff body, namely a circular cylinder. For a fixed Reynolds number (Re ~ 104) and variable tip-speed ratio, 2D particle image velocimetry (PIV) is used to measure the velocity field in the wake of three different laboratory-scale turbines: a 2-bladed, 3-bladed, and 5-bladed VAWT, each with similar geometry. From the PIV measurements, the time-averaged and dynamic characteristics of the wake are evaluated. In all cases, we observe three distinct regions in the VAWT wake: (1) the near wake, where periodic blade shedding dominates; (2) a transition region, where blade vortices decay and growth of a shear layer instability occurs; (3) the far wake, where bluff body wake oscillations dominate. We further characterize this wake transition with regard to turbine solidity and examine its relation to the mean flow, an important metric for power production within a wind farm.

  20. Large Eddy Simulation of Swirling Jet in a Bluff-Body Burner

    Institute of Scientific and Technical Information of China (English)

    Yohei FUJIMOTO; Yuzo INOKUCHI; Nobuhiko YAMASAKI

    2005-01-01

    The large eddy simulation (LES) is applied to an unconfined swirling flow of an air surrounding a bluff-body having a central jet of air, and the complicated flowfield that involves the recirculation and vortex breakdown is investigated. The Smagorinsky model is used as the sub-grid scale model. The results of the present numerical simulation are compared with the experimental data of the mean and stochastic root mean square (RMS)variations of two velocity components. Although the inflow conditions are specified in a simple manner, the obtained numerical results are in reasonable agreement with the experiments, except for a part of RMS variation values near downstream of the bluff body. The present numerical calculations can successfully reproduce the two characteristics of the flow, i.e., an upstream recirculation zone established just downstream of the burner plane and the additional recirculation zone established at the more downstream location.

  1. Orientation of bluff body for designing efficient energy harvesters from vortex-induced vibrations

    Energy Technology Data Exchange (ETDEWEB)

    Dai, H. L. [Department of Mechanics, Huazhong University of Science and Technology, Wuhan 430074 (China); School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 639798 (Singapore); Abdelkefi, A. [Department of Mechanical and Aerospace Engineering, New Mexico State University, Las Cruces, New Mexico 88003 (United States); Yang, Y., E-mail: cywyang@ntu.edu.sg [School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 639798 (Singapore); Wang, L. [Department of Mechanics, Huazhong University of Science and Technology, Wuhan 430074 (China)

    2016-02-01

    The characteristics and performances of four distinct vortex-induced vibrations (VIVs) piezoelectric energy harvesters are experimentally investigated and compared. The difference between these VIV energy harvesters is the installation of the cylindrical bluff body at the tip of cantilever beam with different orientations (bottom, top, horizontal, and vertical). Experiments show that the synchronization regions of the bottom, top, and horizontal configurations are almost the same at low wind speeds (around 1.5 m/s). The vertical configuration has the highest wind speed for synchronization (around 3.5 m/s) with the largest harvested power, which is explained by its highest natural frequency and the smallest coupled damping. The results lead to the conclusion that to design efficient VIV energy harvesters, the bluff body should be aligned with the beam for low wind speeds (<2 m/s) and perpendicular to the beam at high wind speeds (>2 m/s)

  2. Orientation of bluff body for designing efficient energy harvesters from vortex-induced vibrations

    International Nuclear Information System (INIS)

    The characteristics and performances of four distinct vortex-induced vibrations (VIVs) piezoelectric energy harvesters are experimentally investigated and compared. The difference between these VIV energy harvesters is the installation of the cylindrical bluff body at the tip of cantilever beam with different orientations (bottom, top, horizontal, and vertical). Experiments show that the synchronization regions of the bottom, top, and horizontal configurations are almost the same at low wind speeds (around 1.5 m/s). The vertical configuration has the highest wind speed for synchronization (around 3.5 m/s) with the largest harvested power, which is explained by its highest natural frequency and the smallest coupled damping. The results lead to the conclusion that to design efficient VIV energy harvesters, the bluff body should be aligned with the beam for low wind speeds (<2 m/s) and perpendicular to the beam at high wind speeds (>2 m/s)

  3. Aerodynamic drag reduction apparatus for gap-divided bluff bodies such as tractor-trailers

    Science.gov (United States)

    Ortega, Jason M.; Salari, Kambiz

    2006-07-11

    An apparatus for reducing the aerodynamic drag of a bluff-bodied vehicle such as a tractor-trailer in a flowstream, the bluff-bodied vehicle of a type having a leading portion, a trailing portion connected to the leading portion, and a gap between the leading and trailing portions defining a recirculation zone. The apparatus is preferably a baffle assembly, such as a vertical panel, adapted to span a width of the gap between the leading and trailing portions so as to impede cross-flow through the gap, with the span of the baffle assembly automatically adjusting for variations in the gap width when the leading and trailing portions pivot relative to each other.

  4. Numerical investigation of incompressible fluid flow and heat transfer across a bluff body in a channel flow

    OpenAIRE

    Taymaz Imdat; Aslan Erman; Benim Ali Cemal

    2015-01-01

    The Lattice Boltzmann Method is applied to computationally investigate the laminar flow and heat transfer of an incompressible fluid with constant material properties in a two-dimensional channel with a built-in bluff body. In this study, a triangular prism is taken as the bluff body. Not only the momentum transport, but also the energy transport is modeled by the Lattice Boltzmann Method. A uniform lattice structure with a single time relaxation rule is us...

  5. The blow-off mechanism of a bluff-body stabilized laminar premixed flame

    KAUST Repository

    Kedia, Kushal S.

    2015-04-01

    © 2014 The Combustion Institute. The objective of this work is to investigate the dynamics leading to blow-off of a laminar premixed flame stabilized on a confined bluff-body using high fidelity numerical simulations. We used unsteady, fully resolved, two-dimensional simulations with detailed chemical kinetics and species transport for methane-air combustion. The flame-wall interaction between the hot reactants and the heat conducting bluff-body was accurately captured by incorporating the conjugate heat exchange between them. Simulations showed a shear-layer stabilized flame just downstream of the bluff-body, with a recirculation zone formed by the products of combustion. The flame was negatively stretched along its entire length, primarily dominated by the normal component of the strain. Blow-off was approached by decreasing the mixture equivalence ratio, at a fixed Reynolds number, of the incoming flow. A flame is stable (does not undergo blow-off) when (1) flame displacement speed is equal to the flow speed and (2) the gradient of the flame displacement speed normal to its surface is higher than the gradient of the flow speed along the same direction. As the equivalence ratio is reduced, the difference between the former and the latter shrinks until the dynamic stability condition (2) is violated, leading to blow-off. Blow-off initiates at a location where this is first violated along the flame. Our results showed that this location was far downstream from the flame anchoring zone, near the end of the recirculation zone. Blow-off started by flame pinching separating the flame into an upstream moving (carried within the recirculation zone) and a downstream convecting (detached from the recirculation zone) flame piece. Within the range of operating conditions investigated, the conjugate heat exchange with the bluff-body had no impact on the flame blow-off.

  6. A rotating, bluff-body disc for reduced variability in wind tunnel aerosol studies

    OpenAIRE

    Koehler, Kirsten A.; Anthony, T. Renee; Van Dyke, Michael; Volckens, John

    2010-01-01

    A rotating bluff-body disc (RBD) was developed to reduce spatiotemporal variability associated with sampling supermicron aerosol in low-velocity wind tunnels. The RBD is designed to rotate eight personal aerosol samplers around a circular path in a forward-facing plane aligned with the wind tunnel cross section. Rotation of the RBD allows each sampler to traverse an identical path about the wind tunnel cross section, which reduces the effects of spatial heterogeneity associated with dispersin...

  7. An Experimental Spatio-Temporal Analysis of Separated Flows Over Bluff Bodies Using Quantitative Flow Visualization

    OpenAIRE

    Vlachos, Pavlos P.

    2000-01-01

    In order to study three-dimensional unsteady turbulent flow fields such as the wakes of bluff bodies, a Digital Particle Image Velocimetry (DPIV) system was developed. This system allows non-intrusive two-dimensional and time varying velocity measurements. Software and hardware modifications necessary to enhance the capabilities of the system were preformed, resulting in increased frequency resolution. However, due to hardware limitations and limitations inherited from the implementation of t...

  8. Simulations and experiments on the ignition probability in turbulent premixed bluff-body flames

    Science.gov (United States)

    Sitte, Michael Philip; Bach, Ellen; Kariuki, James; Bauer, Hans-Jörg; Mastorakos, Epaminondas

    2016-05-01

    The ignition characteristics of a premixed bluff-body burner under lean conditions were investigated experimentally and numerically with a physical model focusing on ignition probability. Visualisation of the flame with a 5 kHz OH* chemiluminescence camera confirmed that successful ignitions were those associated with the movement of the kernel upstream, consistent with previous work on non-premixed systems. Performing many separate ignition trials at the same spark position and flow conditions resulted in a quantification of the ignition probability Pign, which was found to decrease with increasing distance downstream of the bluff body and a decrease in equivalence ratio. Flows corresponding to flames close to the blow-off limit could not be ignited, although such flames were stable if reached from a richer already ignited condition. A detailed comparison with the local Karlovitz number and the mean velocity showed that regions of high Pign are associated with low Ka and negative bulk velocity (i.e. towards the bluff body), although a direct correlation was not possible. A modelling effort that takes convection and localised flame quenching into account by tracking stochastic virtual flame particles, previously validated for non-premixed and spray ignition, was used to estimate the ignition probability. The applicability of this approach to premixed flows was first evaluated by investigating the model's flame propagation mechanism in a uniform turbulence field, which showed that the model reproduces the bending behaviour of the ST-versus-u‧ curve. Then ignition simulations of the bluff-body burner were carried out. The ignition probability map was computed and it was found that the model reproduces all main trends found in the experimental study.

  9. Drag of a D-shaped bluff body under small amplitude harmonic actuation

    Directory of Open Access Journals (Sweden)

    Yaqing Li

    2015-01-01

    Full Text Available Open-loop flow control method was used to affect the development of a turbulent wake behind a D-shaped bluff body. Loud speakers were embedded inside the bluff body to produce two zero-net-mass-flux jets through 2 mm-wide span-wise slots located along the upper and lower edges on the rear wall. The drag forces for different actuation amplitudes (Cμ, the ratio between the momentum of the actuating jets and the moment deficit caused by the bluff body and frequencies (StA were examined. The effects of the phase difference in the two jets (0 and π were also studied. It was found that when Cμ was 0.1%, a drag reduction up to 5% was achieved when the velocities of the two jets varied in phase at a frequency of StA=0.16. When the velocities of the two jets varied π out of phase, significant drag increase was observed.

  10. Drag and lift reduction of a 3D bluff-body using active vortex generators

    Energy Technology Data Exchange (ETDEWEB)

    Aider, Jean-Luc; Beaudoin, Jean-Francois [PSA Peugeot-Citroen, Research and Innovation Department, Velizy-Villacoublay (France); University Paris 6, University Paris 7-10, Laboratoire PMMH, UMR, CNRS, ESPCI, Paris cedex 05 (France); Wesfreid, Jose Eduardo [University Paris 6, University Paris 7-10, Laboratoire PMMH, UMR, CNRS, ESPCI, Paris cedex 05 (France)

    2010-05-15

    In this study, a passive flow control experiment on a 3D bluff-body using vortex generators (VGs) is presented. The bluff-body is a modified Ahmed body (Ahmed in J Fluids Eng 105:429-434 1983) with a curved rear part, instead of a slanted one, so that the location of the flow separation is no longer forced by the geometry. The influence of a line of non-conventional trapezoidal VGs on the aerodynamic forces (drag and lift) induced on the bluff-body is investigated. The high sensitivity to many geometric (angle between the trapezoidal element and the wall, spanwise spacing between the VGs, longitudinal location on the curved surface) and physical (freestream velocity) parameters is clearly demonstrated. The maximum drag reduction is -12%, while the maximum global lift reduction can reach more than -60%, with a strong dependency on the freestream velocity. For some configurations, the lift on the rear axle of the model can be inverted (-104%). It is also shown that the VGs are still efficient even downstream of the natural separation line. Finally, a dynamic parameter is chosen and a new set-up with motorized vortex generators is proposed. Thanks to this active device. The optimal configurations depending on two parameters are found more easily, and a significant drag and lift reduction (up to -14% drag reduction) can be reached for different freestream velocities. These results are then analyzed through wall pressure and velocity measurements in the near-wake of the bluff-body with and without control. It appears that the largest drag and lift reduction is clearly associated to a strong increase of the size of the recirculation bubble over the rear slant. Investigation of the velocity field in a cross-section downstream the model reveals that, in the same time, the intensity of the longitudinal trailing vortices is strongly reduced, suggesting that the drag reduction is due to the breakdown of the balance between the separation bubble and the longitudinal vortices

  11. Bluff body drag manipulation using pulsed jets and Coanda effect

    CERN Document Server

    Barros, Diogo; Noack, Bernd R; Spohn, Andreas; Ruiz, Tony

    2015-01-01

    We analyze the effects of unsteady forcing on the wake and drag of a square back blunt body. In combination with a Coanda effect, shear-layer forcing by periodic blowing of wall bounded jets allows to recover over 30 % of the base pressure. The actuation frequency is an order of magnitude higher than the natural shear-layer instabilities. High frequency Coanda blowing leads to a thinner time-averaged wake. The effect of this form shaping is analyzed by pressure taps on the rear side of the model in combination with PIV measurements. Velocity components of the mean field indicate a pressure recovery and favorable mean curvature effects across the separated shear layers in the region close to the rear end of the blunt body when actuation is applied. The wake dynamics further downstream, however, remains very similar to the unforced oscillatory wake mode.

  12. The response of a harmonically forced premixed flame stabilized on a heat-conducting bluff-body

    KAUST Repository

    Kedia, Kushal S.

    2015-01-01

    © 2014 The Combustion Institute. The objective of this work is to investigate the unsteady response of a bluff-body stabilized laminar premixed flame to harmonic inlet velocity excitation. A time series analysis was performed to analyze the physical sequence of events at a fixed longitudinal forcing frequency of 100 Hz for cases with (1) two different equivalence ratios and (2) two different thermal properties of the stabilizing bluff-body. It was observed that conjugate heat exchange between the heat conducting bluff-body and the surrounding reacting flow has a crucial impact on the dynamic response. The flame area and anchoring location, the net conjugate heat transfer and the total heat release underwent significant oscillations. The latter was mean shifted and had multiple frequencies. The burning velocity varied significantly along the flame length and the recirculation zone underwent complex changes in its shape and size during an unsteady cycle. The lower equivalence ratio case exhibited vortex shedding after an initial symmetric response with periodic flame extinction and re-ignition along its surface, unlike the higher equivalence ratio case. The metal/ceramic bluff-body showed a net heat transfer directed from/to the bluff-body, to/from the reacting flow during an unsteady cycle, resulting in a significantly different flame response for the two otherwise equivalent cases.

  13. Bluff Body Flow Simulation Using a Vortex Element Method

    Energy Technology Data Exchange (ETDEWEB)

    Anthony Leonard; Phillippe Chatelain; Michael Rebel

    2004-09-30

    Heavy ground vehicles, especially those involved in long-haul freight transportation, consume a significant part of our nation's energy supply. it is therefore of utmost importance to improve their efficiency, both to reduce emissions and to decrease reliance on imported oil. At highway speeds, more than half of the power consumed by a typical semi truck goes into overcoming aerodynamic drag, a fraction which increases with speed and crosswind. Thanks to better tools and increased awareness, recent years have seen substantial aerodynamic improvements by the truck industry, such as tractor/trailer height matching, radiator area reduction, and swept fairings. However, there remains substantial room for improvement as understanding of turbulent fluid dynamics grows. The group's research effort focused on vortex particle methods, a novel approach for computational fluid dynamics (CFD). Where common CFD methods solve or model the Navier-Stokes equations on a grid which stretches from the truck surface outward, vortex particle methods solve the vorticity equation on a Lagrangian basis of smooth particles and do not require a grid. They worked to advance the state of the art in vortex particle methods, improving their ability to handle the complicated, high Reynolds number flow around heavy vehicles. Specific challenges that they have addressed include finding strategies to accurate capture vorticity generation and resultant forces at the truck wall, handling the aerodynamics of spinning bodies such as tires, application of the method to the GTS model, computation time reduction through improved integration methods, a closest point transform for particle method in complex geometrics, and work on large eddy simulation (LES) turbulence modeling.

  14. Experimental Study of Flow Control on Bluff Body using Piezoelectric Actuators

    Directory of Open Access Journals (Sweden)

    Nabil Tounsi

    2016-01-01

    Full Text Available Active flow control is experimentally investigated on a car-type bluff body. The actuation is based on a synthetic jet actuator placed at the top of the Ahmed body rear window. In the present paper, a synthetic jet characterization is presented, the frequencies and the optimal amplitudes with regard to the spatial evolution are analyzed. All the measurements are carried out in a wind tunnel at Reynolds numbers based on the body length between 106 and 106. The bluff body shows a maximum drag reduction of 10% when optimal control is applied. Independent effect of the reduced frequency and the momentum coefficient actuation parameters on the drag reduction are also detailed in the present paper. This reduction induces changes in the flow field due to the piezoelectric actuation. The flow topology modification is investigated via particle image velocimetry measurements in order to estimate the flow response to a local excitation and to understand the mechanism involved in the aerodynamic drag control.

  15. Recent development of vortex method in incompressible viscous bluff body flows

    Institute of Scientific and Technical Information of China (English)

    LIU Lan; JI Feng; FAN Jian-ren; CEN Ke-fa

    2005-01-01

    Vortex methods have been alternative tools of finite element and finite difference methods for several decades. This paper presents a brief review of vortex method development in the last decades and introduces efficient vortex methods developed for high Reynolds number bluffbody flows and suitable for running on parallel computer architectures. Included in this study are particle strength exchange methods, core-spreading method, deterministic particle method and hybrid vortex methods. Combined with conservative methods, vortex methods can comprise the most available tools for simulations of three-dimensional complex bluff body flows at high Reynolds numbers.

  16. Numerical modelling of a turbulent bluff-body flow with Reynolds stress turbulent models

    Institute of Scientific and Technical Information of China (English)

    LI Guoxiu; Dirk ROEKAERTS

    2005-01-01

    Numerical modelling of a turbulent bluff-body flow has been performed using differential Reynolds stress models (DRSMs). To clarify the applicability of the existing DRSMs in this complex flow, several typical DRSMs, including LRR-IP model, JM model, SSG model, as well as a modified LRR-IP model, have been validated and evaluated. The performance difference between various DRSMs is quite significant. Most of the above mentioned DRSMs cannot provide overall satisfactory predictions for this challenging test case. Motivated by the deficiency of the existing approaches, a new modification of LRR-IP model has been proposed. A very significant improvement of the prediction of flow field is obtained.

  17. Power production locality of bluff body flutter mills using fully coupled 2D direct numerical simulation

    Science.gov (United States)

    Kuhl, J. M.; Desjardin, P. E.

    2012-01-01

    Two-dimensional, fully coupled direct numerical simulations (DNS) are conducted to examine the local energy dynamics of a flexible cantilevered plate in the wake of a two-dimensional circular cylinder. The motion of the cantilevered plate is described using a finite element formulation and a fully compressible, finite volume Navier Stokes solver is used to compute the flow field. A sharp interface level set method is employed in conjunction with a ghost fluid method to describe the immersed boundaries of the bluff body and flexible plate. DNS is first conducted to validate the numerical methodology and compared with previous studies of flexible cantilevered plates and flow over bluff bodies; excellent agreement with previous results is observed. A newly defined power production/loss geometry metric is introduced based on surface curvature and plate velocity. The metric is found to be useful for determining which sections of the plate will produce energy based on curvature and deflection rate. Scatter plots and probability measures are presented showing a high correlation between the direction of energy transfer (i.e., to or from the plate) and the sign of the newly defined curvature-deflection-rate metric. The findings from this study suggest that a simple local geometry/kinematic based metric can be devised to aid in the development and design of flexible wind energy harvesting flutter mills.

  18. Dynamics of bluff-body-stabilized premixed hydrogen/air flames in a narrow channel

    KAUST Repository

    Lee, Bok Jik

    2015-06-01

    Two-dimensional direct numerical simulations were conducted for bluff-body stabilized flames of a lean hydrogen/air mixture at near-blowoff conditions in a meso-scale channel. Parametric simulations were conducted by incrementally varying the inflow velocity in the vicinity of the blowoff limit, and the corresponding flame response was monitored. The present study is a showcase of combustion DNS with embedded boundary representation, and full demonstration of the detailed visualization of the near-blowoff flame characteristics. As the inflow velocity approaches blowoff limit, the flame dynamics exhibit a complex sequence of events, such as periodic local extinction and recovery, and regrowth of the bulk flame by the flame segments attached behind the bluff-body. The total extinction is observed as the attached flames shrink down and are no longer able to regrow the bulk flames. Despite the disparity in the physical scale under study, the observed sequence of the extinction pathway shows a strong similarity with experimental observations at larger scale combustion systems. © 2015 The Combustion Institute.

  19. Structure of turbulent flows over two-dimensional bluff bodies inspired by a pickup truck geometry

    International Nuclear Information System (INIS)

    Highlights: • Locations and sizes of the vortices did not change beyond half of bluff body height. • Vorticity and vortex sizes increased with the back plate height. • The reverse velocity in the wake increased with the cavity depth to a maximum of 17%. • The bulk of turbulence was produced close to the test models and transported away. • Similarity in symmetry suggests “pairing” of the 1st and 2nd POD modes. - Abstract: An experimental investigation of turbulent flow over complex two-dimensional bluff bodies using a particle image velocimetry (PIV) technique is reported. The study obtained extensive data sets and documented the salient features of these complex flows using the mean flow and turbulent quantities as well as proper orthogonal decomposition (POD) analysis. The results indicate that all the turbulent quantities increased with downstream distance and test model distance from the test section floor as well as cavity depth but no significant increase in turbulence with the cavity length. The triple velocity correlations indicate that there is negative transport of turbulence kinetic energy in the streamwise direction close to the test section floor but positive transport away. The bulk of turbulence was produced close to the test models and transported away. The POD modes with the same symmetry appeared to be similar in shape, but shifted in the streamwise direction. This similarity in symmetry suggests “pairing” between the first and second POD modes

  20. Wavelet-based adaptive numerical simulation of unsteady 3D flow around a bluff body

    Science.gov (United States)

    de Stefano, Giuliano; Vasilyev, Oleg

    2012-11-01

    The unsteady three-dimensional flow past a two-dimensional bluff body is numerically simulated using a wavelet-based method. The body is modeled by exploiting the Brinkman volume-penalization method, which results in modifying the governing equations with the addition of an appropriate forcing term inside the spatial region occupied by the obstacle. The volume-penalized incompressible Navier-Stokes equations are numerically solved by means of the adaptive wavelet collocation method, where the non-uniform spatial grid is dynamically adapted to the flow evolution. The combined approach is successfully applied to the simulation of vortex shedding flow behind a stationary prism with square cross-section. The computation is conducted at transitional Reynolds numbers, where fundamental unstable three-dimensional vortical structures exist, by well-predicting the unsteady forces arising from fluid-structure interaction.

  1. Numerical aerodynamic analysis of bluff bodies at a high Reynolds number with three-dimensional CFD modeling

    Science.gov (United States)

    Bai, YuGuang; Yang, Kai; Sun, DongKe; Zhang, YuGuang; Kennedy, David; Williams, Fred; Gao, XiaoWei

    2013-02-01

    This paper focuses on numerical simulations of bluff body aerodynamics with three-dimensional CFD (computational fluid dynamics) modeling, where a computational scheme for fluid-structure interactions is implemented. The choice of an appropriate turbulence model for the computational modeling of bluff body aerodynamics using both two-dimensional and three-dimensional CFD numerical simulations is also considered. An efficient mesh control method which employs the mesh deformation technique is proposed to achieve better simulation results. Several long-span deck sections are chosen as examples which were stationary and pitching at a high Reynolds number. With the proposed CFD method and turbulence models, the force coefficients and flutter derivatives thus obtained are compared with the experimental measurement results and computed values completely from commercial software. Finally, a discussion on the effects of oscillation amplitude on the flutter instability of a bluff body is carried out with extended numerical simulations. These numerical analysis results demonstrate that the proposed three-dimensional CFD method, with proper turbulence modeling, has good accuracy and significant benefits for aerodynamic analysis and computational FSI studies of bluff bodies.

  2. High-Speed Linear Raman Spectroscopy for Instability Analysis of a Bluff Body Flame

    Science.gov (United States)

    Kojima, Jun; Fischer, David

    2013-01-01

    We report a high-speed laser diagnostics technique based on point-wise linear Raman spectroscopy for measuring the frequency content of a CH4-air premixed flame stabilized behind a circular bluff body. The technique, which primarily employs a Nd:YLF pulsed laser and a fast image-intensified CCD camera, successfully measures the time evolution of scalar parameters (N2, O2, CH4, and H2O) in the vortex-induced flame instability at a data rate of 1 kHz. Oscillation of the V-shaped flame front is quantified through frequency analysis of the combustion species data and their correlations. This technique promises to be a useful diagnostics tool for combustion instability studies.

  3. Effects of bluff-body burner and coal particle size on NOx emissions and burnout

    Energy Technology Data Exchange (ETDEWEB)

    Xiao, L.S.; Cheng, J.F.; Zeng, H.C. [Huazhong University of Science and Technology, Wuhan (China). National Coal Combustion Lab.

    1999-12-01

    Investigations on air staging have been carried out using various coals with different degrees of fineness and a variety of burners with a 92.9 kw h{sup -1} tunnel furnace burning pulverized coal. It has been observed that using the bluff-body burner can reduce both the unburned carbon in fly ash and NOx emissions in the case of air staging. The experimental results show that air-staging combustion has a more remarkable effect on NOx reduction for higher-volatile coal than for lower-volatile coal. The results also show that there is a strong influence of coal particle size on NOx emissions and unburned carbon in the fly ash in the case of air staging. 13 refs., 12 figs., 2 tabs.

  4. Drag and lift reduction of a 3D bluff body using flaps

    Energy Technology Data Exchange (ETDEWEB)

    Beaudoin, Jean-Francois [PSA Peugeot-Citroen, Research and Innovation Department, Velizy-Villacoublay, FR (France); Aider, Jean-Luc [PSA Peugeot-Citroen, Research and Innovation Department, Velizy-Villacoublay, FR (France); Laboratoire PMMH, ESPCI, Paris cedex 05 (France)

    2008-04-15

    We present an experimental study on flow control over a classic 3D bluff-body used in automotive aerodynamics (Ahmed 1983). Flow control is achieved through moving flaps fixed on every edge around the two rear flat surfaces of the model. Different pairs of flaps, with variable angle compared to the walls, are tested. Parametric studies show that the most efficient configuration for the flaps is along the side edges of the rear slant, i.e. in the region where longitudinal vortices are created, and also at the junction between the roof and the rear slant, where the flow separates. We also explore the combinations of different flap configurations. We find interesting results showing cumulative effects between some configurations leading to -25% drag reduction and -105% lift reduction. Finally, particle image velocimetry measurements show that one of the key effects is the control of the longitudinal vortices created at the side edges of the rear slant. (orig.)

  5. Vortex-acoustic lock-on in bluff-body and backward-facing step combustors

    Indian Academy of Sciences (India)

    S R Chakravarthy; R Sivakumar; O J Shreenivasan

    2007-02-01

    Experimental data on acoustic pressure measurements obtained over a wide range of conditions is reported for two simple geometries that are commonly studied for their combustion dynamics behaviour. These geometries are the confined bluff-body and the confined backward-facing steps. The data indicate regimes of flow-acoustic lock-on that signifies the onset of combustion instability, marked by the excitation of high-amplitude discrete tones of sound in the combustor. The highspeed chemiluminescence imaging of the combustion zone indicates heat-release-rate fluctuations occurring at the same frequencies as observed in the acoustic spectra. Attention is then devoted to the data obtained under cold-flow conditions to illustrate distinctly different behaviour than when combustion instability occurs, contrary to the commonly held view that the combustion process does not alter the underlying fluid mechanical processes under low-Mach number conditions.

  6. Experimental and Numerical Investigation of Flow Structures around Cylindrical Bluff Bodies

    Directory of Open Access Journals (Sweden)

    Yagmur Sercan

    2015-01-01

    Full Text Available The understanding and quantitative prediction of velocity and pressure fluctuations in turbulent flows around such bluff bodies have been evolving over the years. The main aim of the present work is to investigate experimentally and numerically the flow field in the wake region of different bluff bodies such as circular, square and triangle cross section cylinders placed horizontally perpendicular to the uniform flow. The experimental studies were performed by Particle Image Velocimetry (PIV method in an open water channel at Reynolds numbers 5000 and 10000 defined according to the characteristic lengths of the cylinders in the facilities of Selcuk University of Advanced Technology Research and Application Center in Turkey. The experimental results are compared to the numerical results obtained by means of transient simulation with LES turbulence model of ANSYS-Fluent Software. It is shown that the numerical and experimental results have a good agreement in respect of the instantaneous and time-averaged flow field patterns of vorticity, velocity component streamwise direction and streamline topology. In addition, drag coefficient of the geometries were also numerically calculated. For all geometries the wake length in x and y directions and size of the foci of the streamlines are decreasing by increasing Reynolds numbers in time-averaged results. The time-averaged flow patterns of both experimental and numerical results have considerable symmetry with respect to the centerline of each cylinder. Contours of the time-averaged stream wise velocity for Re=10000 demonstrate that the stagnation point around the symmetry plane moves further upstream for all cylinders in accordance with Re=5000. The maximum drag coefficient value was yielded for the square cross-section cylinder as 1.78 due to the sharp-edged geometry.

  7. Modeling flow around bluff bodies and predicting urban dispersion using large eddy simulation.

    Science.gov (United States)

    Tseng, Yu-Heng; Meneveau, Charles; Parlange, Marc B

    2006-04-15

    Modeling air pollutant transport and dispersion in urban environments is especially challenging due to complex ground topography. In this study, we describe a large eddy simulation (LES) tool including a new dynamic subgrid closure and boundary treatment to model urban dispersion problems. The numerical model is developed, validated, and extended to a realistic urban layout. In such applications fairly coarse grids must be used in which each building can be represented using relatively few grid-points only. By carrying out LES of flow around a square cylinder and of flow over surface-mounted cubes, the coarsest resolution required to resolve the bluff body's cross section while still producing meaningful results is established. Specifically, we perform grid refinement studies showing that at least 6-8 grid points across the bluff body are required for reasonable results. The performance of several subgrid models is also compared. Although effects of the subgrid models on the mean flow are found to be small, dynamic Lagrangian models give a physically more realistic subgrid-scale (SGS) viscosity field. When scale-dependence is taken into consideration, these models lead to more realistic resolved fluctuating velocities and spectra. These results set the minimum grid resolution and subgrid model requirements needed to apply LES in simulations of neutral atmospheric boundary layer flow and scalar transport over a realistic urban geometry. The results also illustrate the advantages of LES over traditional modeling approaches, particularly its ability to take into account the complex boundary details and the unsteady nature of atmospheric boundary layer flow. Thus LES can be used to evaluate probabilities of extreme events (such as probabilities of exceeding threshold pollutant concentrations). Some comments about computer resources required for LES are also included. PMID:16683605

  8. Experimental and Numerical Investigation of Flow Structures around Cylindrical Bluff Bodies

    Science.gov (United States)

    Yagmur, Sercan; Dogan, Sercan; Aksoy, Muharrem H.; Canli, Eyub; Ozgoren, Muammer

    2015-05-01

    The understanding and quantitative prediction of velocity and pressure fluctuations in turbulent flows around such bluff bodies have been evolving over the years. The main aim of the present work is to investigate experimentally and numerically the flow field in the wake region of different bluff bodies such as circular, square and triangle cross section cylinders placed horizontally perpendicular to the uniform flow. The experimental studies were performed by Particle Image Velocimetry (PIV) method in an open water channel at Reynolds numbers 5000 and 10000 defined according to the characteristic lengths of the cylinders in the facilities of Selcuk University of Advanced Technology Research and Application Center in Turkey. The experimental results are compared to the numerical results obtained by means of transient simulation with LES turbulence model of ANSYS-Fluent Software. It is shown that the numerical and experimental results have a good agreement in respect of the instantaneous and time-averaged flow field patterns of vorticity, velocity component streamwise direction and streamline topology. In addition, drag coefficient of the geometries were also numerically calculated. For all geometries the wake length in x and y directions and size of the foci of the streamlines are decreasing by increasing Reynolds numbers in time-averaged results. The time-averaged flow patterns of both experimental and numerical results have considerable symmetry with respect to the centerline of each cylinder. Contours of the time-averaged stream wise velocity for Re=10000 demonstrate that the stagnation point around the symmetry plane moves further upstream for all cylinders in accordance with Re=5000. The maximum drag coefficient value was yielded for the square cross-section cylinder as 1.78 due to the sharp-edged geometry.

  9. Experimental and numerical investigation of flow control on bluff bodies by passive ventilation

    Science.gov (United States)

    Falchi, M.; Provenzano, G.; Pietrogiacomi, D.; Romano, G. P.

    2006-07-01

    In this work, the so-called natural or passive ventilation drag reduction method is investigated experimentally and numerically. Passive ventilation is performed by directly connecting the high pressure region at the front of a body to the lower pressure in the near wake using a venting duct; in this manner, a net mass flux is established within the wake. In particular, in aerodynamic applications it appears suitable to attain a global reduction in the drag of a body moving in a fluid and a reduction in turbulence levels by means of a global modification of the body wake. Velocity field investigations using particle image velocimetry measurements and a Reynolds averaged numerical code are employed at moderately high Reynolds numbers to clarify the effectiveness of drag reduction on a vented bluff body. The numerical and experimental results agree qualitatively, but the amount of reduction for the vented body (about 10%) is underestimated numerically. The effectiveness of drag reduction has been proved both for smooth and rough (single strip) models. Direct balance measurements are used for comparisons.

  10. Simulation of bluff-body flows using iterative penalization in a multiresolution particle-mesh vortex method

    DEFF Research Database (Denmark)

    Spietz, Henrik Juul; Hejlesen, Mads Mølholm; Walther, Jens Honore

    The ability to predict aerodynamic forces, due to the interaction of a fluid flow with a solid body, is central in many fields of engineering and is necessary to identify error-prone structural designs. In bluff-body flows the aerodynamic forces oscillate due to vortex shedding and variations in ....... This we combine with an iterative penalization method, that allows the simulation of external flows past arbitrary geometries in arbitrary motions such as bridge decks in forced heave and pitch motion...

  11. Biomimetic bluff body drag reduction by self-adaptive porous flaps

    CERN Document Server

    Mazellier, Nicolas; Kourta, Azeddine

    2011-01-01

    The performances of an original passive control system based on a biomimetic approach are assessed by investigating the flow over a bluff-body. This control device consists in a couple of flaps made from the combination of a rigid plastic skeleton coated with a porous fabric mimicking the shaft and the vane of the bird's feathers, respectively. The sides of a square cylinder have been fitted with this system so as to enable the flaps to freely rotate around their leading edge. This feature allows the movable flaps to self-adapt to the flow conditions. Comparing both the uncontrolled and the controlled flow, a significant drag reduction (up to 22%) has been obtained over a broad range of Reynolds number. The investigation of the mean flow reveals a noticeable modification of the flow topology at large scale in the vicinity of the controlled cylinder accounting for the increase of the pressure base in comparison with the natural flow. Meanwhile, the study of the relative motion of both flaps points out that the...

  12. Experimental Study on Turbulent Structure of Humid Air Flame in a Bluff-body Burner

    Institute of Scientific and Technical Information of China (English)

    Bing Ge; Shu-Sheng Zang; Pei-qing Guo

    2009-01-01

    The main objective of the present experimental study is to analyze the turbulent structure in humid air non-premixed flame, and determine the effect of humidity on the flow field and the flame stability limit in turbu-lent non-premixed flame. Particle Image Velocimetry (PIV) is used to capture the instantaneous appearance of vortex structures and obtain the quantitative velocity field. The distributions of Reynolds shear stress, mean and root-mean squared fluctuating (rms) velocities are examined to get insight into the effect of fuel-to-air velocity ra-tio on velocity flow field. The results show that with steam addition, the air-driven vortex in the bluff-body wake is thinner; the biggest peaks of rms velocity and Reynolds shear stress are lower; the distance between the peaks of rms velocity on the sides of centerline reduces. Besides these, the flame stability is affected. Both central fuel penetration limit and partially quenching limit reduce with steam addition.

  13. Combustion instability of pilot flame in a pilot bluff body stabilized combustor

    Institute of Scientific and Technical Information of China (English)

    Fu Xiao; Yang Fujiang; Guo Zhihui

    2015-01-01

    Combustion instability of pilot flame has been investigated in a model pilot bluff body stabilized combustor by running the pilot flame only. The primary objectives are to investigate the pilot flame dynamics and to provide bases for the study of the interaction mechanisms between the pilot flame and the main flame. Dynamic pressures are measured by dynamic pressure transduc-ers. A high speed camera with CH*bandpass filter is used to capture the pilot flame dynamics. The proper orthogonal decomposition (POD) is used to further analyze the high speed images. With the increase of the pilot fuel mass flow rate, the pilot flame changes from stable to unstable state grad-ually. The combustion instability frequency is 136 Hz when the pilot flame is unstable. Numerical simulation results show that the equivalence ratios in both the shear layer and the recirculation zone increase as the pilot fuel mass flow rate increases. The mechanism of the instability of the pilot flame can be attributed to the coupling between the second order acoustic mode and the unsteady heat release due to symmetric vortex shedding. These results illustrate that the pilot fuel mass flow rate has significant influences on the dynamic stability of the pilot flame.

  14. Unsteady Euler/Lagrange simulation of a confined bluff-body gas-solid turbulent flow

    Science.gov (United States)

    Chrigui, Mouldi; Hidouri, Ammar; Sadiki, Amsini; Janicka, Johannes

    2013-10-01

    An unsteady Euler-Lagrangian approach is adopted to predict the gaseous carrier and disperse phases flow dynamics. The turbulence is captured using two different methods, i.e. the unsteady Reynolds averaging based numerical simulation (URANS) and the large eddy simulation (LES). In the latter one, the dynamic Smagorinsky approach is used to model the sub-grid scale stresses. The time-dependent solid particle and gas phase flow properties of a confined bluff-body turbulent flow including two-way coupling effects are evaluated through comparisons with experimental data. The configuration under study features an important recirculation zone and has a mass loading of 22%. So, collision effects are not considered while tracking the disperse phase that consists of glass beads. A thermodynamically consistent turbulence modulation approach is applied for the determination of the source terms that account for the effect of particles on the turbulence level of the carrier phase. Within the URANS technique the dispersion of particles is captured by the Markov sequence approach; this model is modified by integrating a drift factor term while modeling the pressure gradient. A particular emphasis is put on the disperse phase feedback on the carrier phase and coupling procedure within each Eulerian time step along with an unsteady coupling of both codes, the (Eulerian) FASTEST3D and the (Lagrangian) LAG3D codes. Quantitative results of the disperse phase properties as well as those of the carrier phase are presented at different positions around the recirculation zone. The numerical results using both, the LES and/or the URANS delivered comparable results that agree reasonably with experimental data. However, a slight advantage of LES over URANS could be observed.

  15. NEAR-BLOWOFF DYNAMICS OF BLUFF-BODY-STABILIZED PREMIXED HYDROGEN/AIR FLAMES IN A NARROW CHANNEL

    KAUST Repository

    Lee, Bok Jik

    2015-06-07

    The flame stability is known to be significantly enhanced when the flame is attached to a bluff-body. The main interest of this study is on the stability of the flame in a meso-scale channel, considering applications such as combustion-based micro power generators. We investigate the dynamics of lean premixed hydrogen/air flames stabilized behind a square box in a two-dimensional meso-scale channel with high-fidelity numerical simulations. Characteristics of both non-reacting flows and reacting flows over the bluff-body are studied for a range of the mean inflow velocity. The flame stability in reacting flows is investigated by ramping up the mean inflow velocity step by step. As the inlet velocity is increased, the initially stable steady flames undergo a transition to an unsteady mode of regular asymmetric fluctuation. When the inlet velocity is further increased, the flame is eventually blown off. Between the regular fluctuation mode and blowoff limit, there exists a narrow range of the inlet velocity where the flames exhibit periodic local extinction and recovery. Approaching further to blowoff limit, the local extinction and recovery becomes highly transient and a failure of recovery leads blowoff and extinction of the flame kernel.

  16. Numerical investigation of incompressible fluid flow and heat transfer across a bluff body in a channel flow

    Directory of Open Access Journals (Sweden)

    Taymaz Imdat

    2015-01-01

    Full Text Available The Lattice Boltzmann Method is applied to computationally investigate the laminar flow and heat transfer of an incompressible fluid with constant material properties in a two-dimensional channel with a built-in bluff body. In this study, a triangular prism is taken as the bluff body. Not only the momentum transport, but also the energy transport is modeled by the Lattice Boltzmann Method. A uniform lattice structure with a single time relaxation rule is used. For obtaining a higher flexibility on the computational grid, interpolation methods are applied, where the information is transferred from the lattice structure to the computational grid by Lagrange interpolation. The flow is investigated for different Reynolds numbers, while keeping the Prandtl number at the constant value of 0.7. The results show how the presence of a triangular prism effects the flow and heat transfer patterns for the steady-state and unsteady-periodic flow regimes. As an assessment of the accuracy of the developed Lattice Boltzmann code, the results are compared with those obtained by a commercial Computational Fluid Dynamics code. It is observed that the present Lattice Boltzmann code delivers results that are of similar accuracy to the well-established Computational Fluid Dynamics code, with much smaller computational time for the prediction of the unsteady phenomena.

  17. Influence of the bluff body shear layers on the wake of a square prism in a turbulent flow

    Science.gov (United States)

    Lander, D. C.; Letchford, C. W.; Amitay, M.; Kopp, G. A.

    2016-08-01

    Despite a substantial body of literature dealing with the effects of free-stream turbulence (FST) on two-dimensional square prism, there remain some open questions regarding the influence of the bluff body shear layer development in a highly perturbed environment and the resulting impact on bluff body flow characteristics. Accordingly, flows with ambient and enhanced FST were studied at ReD=5.0 ×104 using long-duration time-resolved particle image velocimetry (PIV). The data indicate a narrowing and lengthening of the mean wake and an accompanying rise in base pressure. Using triple decomposition, the underlying dynamics of the wake reveal a streamwise lengthening of the individual von Kármán vortex structures, complementing the increase in mean wake length. Close inspection of the shear layer region, in the presence of FST, indicates a substantial increase in curvature towards the body but no pronounced increase in the growth rate. The loci of maximum turbulent kinetic energy and spanwise vorticity in the shear layer region further reveal that the most pronounced changes occur during the very initial stages follow separation. Inspection of a series of instantaneous PIV fields of Q criterion show that the conventional transition pathway, via the formation and subsequent pairing of the Kelvin-Helmholtz (KH) vortices, is bypassed. The KH vortices are observed to immediately cluster and amalgamate before breaking into smaller random eddies. The bypass transition is followed by shear layer reattachment in some cases. This is considered a primary mechanism responsible for the reported changes in the global flow characteristics and the altered wake dynamics. Furthermore, a quantitative definition of the diffusion length is implemented for the square prism wake and its relationship to the Strouhal number and wake formation length is considered.

  18. Shape optimization of active and passive drag-reducing devices on a D-shaped bluff body

    CERN Document Server

    Semaan, Richard

    2016-01-01

    Shape optimization of an active and a passive drag-reducing device on a two-dimensional D-shaped bluff body is performed. The two devices are: Coanda actuator, and randomly-shaped trailing-edge flap. The optimization sequence is performed by coupling the genetic algorithm software DAKOTA to the mesh generator Pointwise and to the CFD solver OpenFOAM. For the the active device the cost functional is the power ratio, whereas for the passive device it is the drag coefficient. The optimization leads to total power savings of $\\approx 70\\%$ for the optimal Coanda actuator, and a 40\\% drag reduction for the optimal flap. This reduction is mainly achieved through streamlining the base flow and suppressing the vortex shedding. The addition of either an active or a passive device creates two additional smaller recirculation regions in the base cavity that shifts the larger recirculation region away from the body and increases the base pressure. The results are validated against more refined URANS simulations for selec...

  19. Simulation of vortex shedding behind a bluff body flame stabilizer using a hybrid U-RANS/PDF method

    Institute of Scientific and Technical Information of China (English)

    Min-Ming Zhu; Ping-Hui Zhao; Hai-Wen Ge; Yi-Liang Chen

    2012-01-01

    The present study aims at the investigation of the effects of turbulence-chemistry interaction on combustion instabilities using a probability density function (PDF)method. The instantaneous quantities in the flow field were decomposed into the Favre-averaged variables and the stochastic fluctuations,which were calculated by unsteady Reynolds averaged Navier-Stokes (U-RANS) equations and the PDF model,respectively.A joint fluctuating velocityfrequency-composition PDF was used.The governing equations are solved by a consistent hybrid finite volume/MonteCarlo algorithm on triangular unstructured meshes.A nonreacting flow behind a triangular-shaped bluff body flame stabilizer in a rectilinear combustor was simulated by the present method.The results demonstrate the capability of the present method to capture the large-scale coherent structures.The triple decomposition was performed,by dividing the coherent Favre-averaged velocity into time-averaged value and periodical coherent part,to analyze the coherent and incoherent contributions to Reynolds stresses.A simple modification to the coefficients in the turbulent frequency model will help to improve the simulation results.Unsteady flow fields were depicted by streamlines and vorticity contours.Moreover,the association between turbulence production and vorticity saddle points is illustrated.

  20. A Comparison of the Characteristics of Planar and Axisymmetric Bluff-Body Combustors Operated under Stratified Inlet Mixture Conditions

    Directory of Open Access Journals (Sweden)

    G. Paterakis

    2013-01-01

    Full Text Available The work presents comparisons of the flame stabilization characteristics of axisymmetric disk and 2D slender bluff-body burner configurations, operating with inlet mixture stratification, under ultralean conditions. A double cavity propane air premixer formed along three concentric disks, supplied with a radial equivalence ratio gradient the afterbody disk recirculation, where the first flame configuration is stabilized. Planar fuel injection along the center plane of the leading face of a slender square cylinder against the approach cross-flow results in a stratified flame configuration stabilized alongside the wake formation region in the second setup. Measurements of velocities, temperatures, OH∗ and CH∗ chemiluminescence, local extinction criteria, and large-eddy simulations are employed to examine a range of ultralean and close to extinction flame conditions. The variations of the reacting front disposition within these diverse reacting wake topologies, the effect of the successive suppression of heat release on the near flame region characteristics, and the reemergence of large-scale vortical activity on approach to lean blowoff (LBO are investigated. The cross-correlation of the performance of these two popular flame holders that are at the opposite ends of current applications might offer helpful insights into more effective control measures for expanding the operational margin of a wider range of stabilization configurations.

  1. Drag modification and wake control of an axisymmetric bluff body using the Coanda effect

    Science.gov (United States)

    Freund, J. B.; Mungal, M. G.

    This work investigates the ability of Coanda jet blowing to modify the base pressure of a cylindrical body aligned axially in a flow and hence produce overall drag reduction. It is found that blowing through one or two slot jets concentric to the outer body circumference can significantly influence the entire base flow region. The recirculating wake is eliminated and is replaced by free-stream fluid entrained by the Coanda flowing. Base pressure rises signifcantly and leads to drag reduction of up to 30 percent beyond the thrusting action of the Coanda jet. A comparison between the power savings through drag reduction and the power requirement of the Coanda jet demonstrates that net benefits are attainable at certain body geometries and flow conditions. By judiciously selecting the jet blowing velocity, it is possible to produce a nearly flat wake velocity profile requiring little net power.

  2. Computational fluid dynamic studies of certain ducted bluff-body flowfields relevant to turbojet combustors. Volume 2: Time-averaged flowfield predictions for a proposed centerbody combustor

    Science.gov (United States)

    Raju, M. S.; Krishnamurthy, L.

    1986-07-01

    The near-wake region in a ducted bluff-body combustor was investigated by finite-difference computations. The numerical predictions are based upon the time-independent, Reynolds-averaged Navier-Stokes equations and the k-epsilon turbulence model. The steady-state calculations address both nonreacting and reacting flowfields in a novel configuration to more realistically simulate some of the essential features of the primary zone of a gas turbine combustion chamber. This configuration is characterized by turbulent mixing and combustion in the recirculating near-wake region downstream of an axisymmetric bluff body due to two annular air streams--an outer swirl-free flow and an inner swirling flow--and a central fuel jet. The latter contains propane for reacting flows and carbon dioxide for nonreacting flows. In view of the large number of geometrical and flow parameters involved, the reported results are concerned with only a limited parametric examination with the major emphasis being on nonreacting flows. Questions addressed for a particular set of geometric parameters include the effects of variation of mass flow rates in all three streams and the influence of swirl in the middle stream. Reacting computations investigate the influence of swirl on combustion, as well as that of combustion on the flowfield.

  3. Learning to Bluff

    CERN Document Server

    Hurwitz, Evan

    2007-01-01

    The act of bluffing confounds game designers to this day. The very nature of bluffing is even open for debate, adding further complication to the process of creating intelligent virtual players that can bluff, and hence play, realistically. Through the use of intelligent, learning agents, and carefully designed agent outlooks, an agent can in fact learn to predict its opponents reactions based not only on its own cards, but on the actions of those around it. With this wider scope of understanding, an agent can in learn to bluff its opponents, with the action representing not an illogical action, as bluffing is often viewed, but rather as an act of maximising returns through an effective statistical optimisation. By using a tee dee lambda learning algorithm to continuously adapt neural network agent intelligence, agents have been shown to be able to learn to bluff without outside prompting, and even to learn to call each others bluffs in free, competitive play.

  4. REVIEW OF PASSIVE DRAG REDUCTION TECHNIQUES FOR BLUFF ROAD VEHICLES

    Directory of Open Access Journals (Sweden)

    Alaman Altaf

    2014-05-01

    Full Text Available ABSTRACT:This paper presents a review of the techniques used to reduce aerodynamic drag over bluff bodies such as cylinders, spheres, 2D bodies with blunt backs and their application to commercial road vehicles.  The recent research carried out on the drag reduction is presented and categorised. A new classification of the techniques is introduced and major contributions under them are shown. It can be concluded that there is not much work done with realistic 3D bluff bodies, especially using passive methods.ABSTRAK: Kertas kerja ini membentangkan kaji selidik semula teknik yang digunakan untuk mengurangkan seret aerodinamik ke atas jasad tubir seperti silinder, sfera, jasad 2D dengan belakang tumpul dan aplikasinya terhadap kenderaan jalan raya komersial. Pengurangan seretan dibentangkan dan dikategorikan dengan kajian terkini. Klasifikasi teknik terkini diperkenalkan dan sumbangan utamanya diperbentangkan.  Secara kesimpulannya terdapat banyak tugasan yang tidak yang dapat dijalankan dengan menggunakan jasad tubir 3D sebenar, terutamanya dengan penggunaan kaedah pasif.

  5. A case of psychodynamic bluff

    Directory of Open Access Journals (Sweden)

    Vittorio Ferraro

    2012-06-01

    Full Text Available Each story is told, is reconstructed and becomes a reality but it is a “reconstruction” of their own reality, so it‟s always difficult to understand for the listener, the events actually occurred. The patient, “says ...”, but is it true? In some patients, what is narrated has the explicit right now as the “reconstruction”, the presence of “double” story, the true and false. Andrea is evident in the life of a serious shortage, or lack of care from which the most significant consequence is a severe disorder of the self and the lack of autonomy initial departure. There is an ever present in the life of Andrea, a noise: it is the “devaluation” of the other, the world itself and all of all things in life including of course the psychotherapies. All that Andrea is not a real thing, because there is always a double, which neutralizes the opposite have done, or rather what can rightly be part of its products is always missing from a condition of part, by a factor so that it becomes real, authentic. The bluff is a narcissistic disorder and is always connected to the authenticity of the self that is false, however, devalued and grandiose: the person tries to valorise itself but is always terrified, indeed the certainty that sooner or later everyone will see this true nature, therefore, prefer not attributable to the things that makes or obtains. The name Andrea hides something unknown to his own self, why has not developed its originality, had no love to be born as a person has held a life of bluffing, developing skills that he never felt like his, with a mechanism that invalidates all leading him to not ever esteem, not loving each other ever.

  6. The Hydrogen Economy as a Technological Bluff

    Science.gov (United States)

    Vanderburg, Willem H.

    2006-01-01

    The hydrogen economy is a technological bluff in its implied assurance that, despite the accelerating pace at which we are depleting the remaining half of our fossil fuels, our energy future is secure. Elementary thermodynamic considerations are developed to show that a hydrogen economy is about as feasible as a perpetual motion machine. Hydrogen…

  7. Observations of Permafrost Bluff Failure Processes, Barter Island, NE Alaska

    Science.gov (United States)

    Erikson, L. H.; Richmond, B. M.; Gibbs, A.; Jones, B.

    2011-12-01

    Arctic coast permafrost bluffs are extremely vulnerable to increased thaw, erosion, and landward retreat in a warming climate. Here, we report on permafrost bluff retreat processes based on field observations of bluff geology and morphology during the summers of 2010 and 2011 combined with historical analyses of bluff retreat rates from the mid 1940s to the present for Barter Island, NE Alaska. Field data collected included GPS surveys of bluff position and morphology, geologic mapping including stratigraphy, sediment size and composition, ice content, nearshore bathymetry, and temperature gradients recorded by thermistor arrays. Failure mechanisms are the direct causes of failures and include wave action, water flow (both surface and groundwater), freeze/thaw impacts, and surficial weathering. Failure modes are the processes by which the failures occur such as undercutting (notching) and oversteepening of the bluff face, retrogressive thaw slumping, rotational failures, block falls, and gullying. Processes of failure observed along the Barter Island bluffs vary both temporally with seasonal changes in temperature and sea-ice conditions, and spatially associated with variations in bluff height and composition. In the spring and early summer, sediment-entrained land-fast ice recedes, removing and reworking sediment from the bluff and foreshore. Snow melt induces surface runoff and gullying, and is accompanied by thawing of the bluff face which begins to produce debris avalanches and small alluvial fans at the base of the bluffs where a backbeach is present. During the summer months, when sea-ice has retreated from the coast, thermo-erosional niching and mechanical notch formation occurs due to small storm waves and elevated water levels in response to winds and pressure differences. As bluff-face thawing continues large thaw slump failures and block falls begin to develop. In late summer and fall, before the sea ice returns, extra-tropical storms lead to increased

  8. Evaluation of In Situ Combustion for Schrader Bluff

    Energy Technology Data Exchange (ETDEWEB)

    Sarathi, P.; Strycker, A.; Wang, S.

    1999-03-11

    The focus of this report is on the results related to evaluation of in situ combustion processes applied to Schrader Bluff. Initially, overall screening processes were applied to determine which of the EOR methods, were most appropriate for Schrader Bluff. In situ combustion was among the methods considered potentially favorable and was evaluated further. Laboratory scale tube runs were conducted to determine if the kinetic parameters for the crude oil were favorable. Additional sensitivity studies were conducted to evaluate the recovery potential. Described in this report are the results of the (1) initial screening,(2) experimental tube runs, and (3) simulation sensitivity studies as related to in situ combustion in Schrader Bluff.

  9. Disposal of chemical agents and munitions stored at Pine Bluff Arsenal, Pine Bluff, Arkansas

    Energy Technology Data Exchange (ETDEWEB)

    Ensminger, J.T.; Hillsman, E.L.; Johnson, R.D.; Morrisey, J.A.; Staub, W.P.; Boston, C.R.; Hunsaker, D.B.; Leibsch, E.; Rickert, L.W.; Tolbert, V.R.; Zimmerman, G.P.

    1991-09-01

    The Pine Bluff Arsenal (PBA) near Pine Bluff, Arkansas, is one of eight continental United States (CONUS) Army installations where lethal unitary chemical agents and munitions are stored and where destruction of agents and munitions is proposed under the Chemical Stockpile Disposal Program (CSDP). The chemical agent inventory at PBA consists of approximately 12%, by weight, of the total US stockpile. The destruction of the stockpile is necessary to eliminate the risk to the public from continued storage and to dispose of obsolete and leaking munitions. In 1988 the US Army issued a Final Programmatic Environmental Impact Statement (FPEIS) for the CSDP that identified on-site disposal of agents and munitions as the environmentally preferred alternative (i.e., the alternative with the least potential to cause significant adverse impacts). The purpose of this report is to examine the proposed implementation of on-site disposal at PBA in light of more recent and more detailed data than those on which the FPEIS is based. New population data were used to compute fatalities using the same computation methods and values for all other parameters as in the FPEIS. Results indicate that all alternatives are indistinguishable when the potential health impacts to the PBA community are considered. However, risks from on-site disposal are in all cases equal to or less than risks from other alternatives. Furthermore, no unique resources with the potential to prevent or delay implementation of on-site disposal at PBA have been identified.

  10. Monitoring stream bluff erosion using repeat terrestrial laser scanning

    Science.gov (United States)

    Neitzel, G.; Gran, K. B.

    2012-12-01

    Terrestrial laser scanning (TLS) technology provides high-resolution topographic data that can be used to detect geomorphic change in fluvial environments. In this study, we utilize successive terrestrial laser scans to investigate the relationship between peak flow rates and stream bluff erosion in the Amity Creek watershed in Duluth, Minnesota. We also combine TLS scan results with bluff inventories from airborne lidar to estimate the volume of sediment erosion from bluffs in the watershed, which is an important source of fine sediment contributing to the creek's turbidity impairment. We selected nine study bluffs to conduct terrestrial laser scans on after all significant flood events over a two-year time period. The study employs a Faro Focus 3D phase-shift laser to collect data. Post-processing of the TLS-point cloud data sets involves: (1) removal of vegetation and objects other than the erosional surface of interest; (2) decimation of the point cloud in PC Tools and extraction of zmin values to produce a data set manageable in GIS; (3) creation of a bare earth digital elevation model (DEM) for each set of scans using ArcMap; and (4) utilization of Geomorphic Change Detection (GCD) software to generate DEMs of Difference (DODs) from subsequent terrestrial laser scans. Preliminary results from three flooding events indicate significant erosional activity at all field sites. Slumps were observed at two bluffs following spring melt and freeze/thaw cycling. Two major precipitation events in late spring and early summer provided a unique opportunity to observe the impact of extreme high flow events on bluff erosion throughout the watershed using TLS technology. 4.75 inches of intermittent rain over a six-day period in late May 2012 (May 23-28) resulted in slumping at many bluffs and one major failure. The ≥100-year flood that occurred on June 19-20 (7.25 inches), 2012 was powerful enough to induce considerable channel change. Slumps occurred at six study sites

  11. Spanwise bifurcations beneath the bluff-body instability modes

    Science.gov (United States)

    Sau, Amalendu; Peng, Y. F.; Hwang, R. R.

    2016-06-01

    A new family of bifurcations is detected in a cylinder wake. The simulations reveal the presence of physically significant spanwise wavy flow undulation in the near-wake of a square cylinder which plays an important role in the modal transition. The alternate process of vortex shedding initiates a systematic cross-stream momentum transfer that activates self-sustained spanwise oscillation of the physical wake, leading to the growth of sequence of Hopf bifurcations along the topological cores of von Kármán vortices. The study exhibits how exactly such self-excited spanwise oscillatory fluctuations of pressure, velocity, and KE keep growing along a vortex-core for increased Re and distinctly influence the growth of "Mode A" and "Mode B" instability. It reports existence of two distinct stages of wake undulation over 125 ≤ Re ≤ 240. While the weakly subcritical spanwise-periodic oscillations of pressure, velocity, vorticity, and associated uniform and wider length-scale bifurcations along the von Kármán vortex corelines dominate during "Mode A" instability, the transition to the "Mode B" is prompted following faster and random eruption (and swapping) of significantly smaller but variable length-scaled bifurcations and accompanied low frequency non-uniform fluctuation of flow variables. Such unstable flow perturbations and resulting bifurcations along the von Kármán vortex cores apparently influence generation of longitudinal vortical ribs (Mode A and Mode B) in the wake. The appearance of a slow varying secondary frequency at the bifurcation points seemed crucial for initiating the spanwise flow irregularity and transition to "Mode B."

  12. Aerodynamic pitching damping of vehicle-inspired bluff bodies

    Science.gov (United States)

    Tsubokura, Makoto; Cheng, Seeyuan; Nakashima, Takuji; Nouzawa, Takahide; Okada, Yoshihiro

    2010-11-01

    Aerodynamic damping mechanism of road vehicles subjected to pitching oscillation was investigated by using large-eddy simulation technique. The study was based on two kinds of simplified vehicle models, which represent real sedan-type vehicles with different pitching stability in the on-road test. The simplified vehicle modes were developed so as to reproduce the characteristic flow structures above the trunk deck of the real vehicles measured in a wind-tunnel at the static case without oscillation. The forced sinusoidal pitching oscillation was imposed on the models and their pitching damping factors were evaluated through the phase-averaged pitching moment. Then flow structures in the wake of the models were extracted and its contribution to the damping mechanism was discussed. It was found that slight difference of the front and rear pillars' shape drastically affects the flow structures in the wake of the models, which enhance or restrain the vehicles' pitching instability.

  13. 33 CFR 207.170 - Federal Dam, Oklawaha River, Moss Bluff, Fla.; pool level.

    Science.gov (United States)

    2010-07-01

    ... Bluff, Fla.; pool level. 207.170 Section 207.170 Navigation and Navigable Waters CORPS OF ENGINEERS..., Moss Bluff, Fla.; pool level. (a) The level of the pool shall normally be maintained at elevation 56.5 feet above sea level: Provided, That the level of the pool may be raised to not exceeding 58.5...

  14. Fighting Online Click-Fraud Using Bluff Ads

    CERN Document Server

    Haddadi, Hamed

    2010-01-01

    Online advertising is currently the greatest source of revenue for many Internet giants. The increased number of specialized websites and modern profiling techniques, have all contributed to an explosion of the income of ad brokers from online advertising. The single biggest threat to this growth, is however, click-fraud. Trained botnets and even individuals are hired by click-fraud specialists in order to maximize the revenue of certain users from the ads they publish on their websites, or to launch an attack between competing businesses. In this note we wish to raise the awareness of the networking research community on potential research areas within this emerging field. As an example strategy, we present Bluff ads; a class of ads that join forces in order to increase the effort level for click-fraud spammers. Bluff ads are either targeted ads, with irrelevant display text, or highly relevant display text, with irrelevant targeting information. They act as a litmus test for the legitimacy of the individual...

  15. The Interaction Vortex Flow Around Two Bluff Cylinders

    Directory of Open Access Journals (Sweden)

    Hirao K.

    2013-04-01

    Full Text Available In this study, the interaction vortex flow features around a pair of parallel arranged bluff cylinders were observed by visualizing water flow experiment at the range of the gap ratio G/d=0~3. It was obtained that the result of established wind tunnel test and the result of this water tank test agreed about the characteristics of vortex shedding when varying the distance of circular cylinder gap. The flow pattern and vortex shedding frequency of another type bluff cylinder (triangular and square cylinder were also investigated. As a result of the experiment, it was shown that the flow pattern of wake flow was divided into three kinds (coupled vortex streets, biased gap flow and single vortex street regardless of the cylinder section shape and cylinder size. Then, the region of the appearance of flow pattern was shown about each case. In the case where two each other independent vortex streets were formed, three typical flow patterns of vortex formation (in-phase coupled vortex streets, out-of-phase coupled vortex streets and complication coupled vortex streets were observed. It was known that three configuration of vortex formation appear intermittently and alternatively.

  16. Disposal of chemical agents and munitions stored at Pine Bluff Arsenal, Pine Bluff, Arkansas. Final phase 1, Environmental report

    Energy Technology Data Exchange (ETDEWEB)

    Ensminger, J.T.; Hillsman, E.L.; Johnson, R.D.; Morrisey, J.A.; Staub, W.P.; Boston, C.R.; Hunsaker, D.B.; Leibsch, E.; Rickert, L.W.; Tolbert, V.R.; Zimmerman, G.P.

    1991-09-01

    The Pine Bluff Arsenal (PBA) near Pine Bluff, Arkansas, is one of eight continental United States (CONUS) Army installations where lethal unitary chemical agents and munitions are stored and where destruction of agents and munitions is proposed under the Chemical Stockpile Disposal Program (CSDP). The chemical agent inventory at PBA consists of approximately 12%, by weight, of the total US stockpile. The destruction of the stockpile is necessary to eliminate the risk to the public from continued storage and to dispose of obsolete and leaking munitions. In 1988 the US Army issued a Final Programmatic Environmental Impact Statement (FPEIS) for the CSDP that identified on-site disposal of agents and munitions as the environmentally preferred alternative (i.e., the alternative with the least potential to cause significant adverse impacts). The purpose of this report is to examine the proposed implementation of on-site disposal at PBA in light of more recent and more detailed data than those on which the FPEIS is based. New population data were used to compute fatalities using the same computation methods and values for all other parameters as in the FPEIS. Results indicate that all alternatives are indistinguishable when the potential health impacts to the PBA community are considered. However, risks from on-site disposal are in all cases equal to or less than risks from other alternatives. Furthermore, no unique resources with the potential to prevent or delay implementation of on-site disposal at PBA have been identified.

  17. Environmental contaminants in shortnose sturgeon from Bears Bluff National Fish Hatchery, Wadmalaw Island, South Carolina

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — The shortnose sturgeon (Acipenser brevirostrum) is a federally‐listed endangered species. In 2008, eleven shortnose sturgeon, reared at the Bears Bluff National...

  18. Assessing landslide potential on coastal bluffs near Mukilteo, Washington—Geologic site characterization for hydrologic monitoring

    Science.gov (United States)

    Mirus, Benjamin B.; Smith, Joel B.; Benjamin Stark,; York Lewis,; Abigail Michel,; Baum, Rex L.

    2016-07-01

    During the summer 2015, the U.S. Geological Survey collected geologic and geotechnical data for two sites on coastal bluffs along the eastern shore of Puget Sound, Washington. The U.S. Geological Survey also installed hydrologic instrumentation at the sites and collected specimens for laboratory testing. The two sites are located on City of Mukilteo open-space land and are about 0.6 kilometers apart. The bluffs at each site are approximately 42 meters high, and rise steeply from the shoreline with 32–35° slopes. The more northerly of the two sites occupies an active landslide and is mostly unvegetated. The other site is forested, and although stable during the preparation of this report, shows evidence of historical and potential landslide activity. The slopes of the bluffs at both sites are mantled by a thin, nonuniform colluvium underlain by clay-rich glacial deposits and tills of the Whidbey Formation or Double Bluff Drift. Till consisting of sand, gravel, and cobbles caps the bluffs and rests on finer grained glacial deposits of sand, silt, and clay. These types of different glacial deposits are dense, vertically fractured, and generally have low permeability, but field observations indicate that locally the deposits are sufficiently permeable to allow lateral flow of water along fractures and subhorizontal boundaries between deposits of different texture. Laboratory tests indicate that many of the deposits are highly plastic, with low hydraulic conductivity, and moderate shear strength. Steep slopes combined with the strength and hydraulic characteristics of the deposits leave the bluffs prone to slope instability, particularly during the wet season when infiltrating rainfall changes moisture content, pore-water pressure, and effective stress within the hillslope. The instrumentation was designed to primarily observe rainfall variability and hydrologic changes in the subsurface that can affect stability of the bluffs, and also to compare the hydrologic

  19. Assessing landslide potential on coastal bluffs near Mukilteo, Washington—Geologic site characterization for hydrologic monitoring

    Science.gov (United States)

    Mirus, Benjamin B.; Smith, Joel B.; Benjamin Stark; York Lewis; Abigail Michel; Baum, Rex L.

    2016-01-01

    During the summer 2015, the U.S. Geological Survey collected geologic and geotechnical data for two sites on coastal bluffs along the eastern shore of Puget Sound, Washington. The U.S. Geological Survey also installed hydrologic instrumentation at the sites and collected specimens for laboratory testing. The two sites are located on City of Mukilteo open-space land and are about 0.6 kilometers apart. The bluffs at each site are approximately 42 meters high, and rise steeply from the shoreline with 32–35° slopes. The more northerly of the two sites occupies an active landslide and is mostly unvegetated. The other site is forested, and although stable during the preparation of this report, shows evidence of historical and potential landslide activity. The slopes of the bluffs at both sites are mantled by a thin, nonuniform colluvium underlain by clay-rich glacial deposits and tills of the Whidbey Formation or Double Bluff Drift. Till consisting of sand, gravel, and cobbles caps the bluffs and rests on finer grained glacial deposits of sand, silt, and clay. These types of different glacial deposits are dense, vertically fractured, and generally have low permeability, but field observations indicate that locally the deposits are sufficiently permeable to allow lateral flow of water along fractures and subhorizontal boundaries between deposits of different texture. Laboratory tests indicate that many of the deposits are highly plastic, with low hydraulic conductivity, and moderate shear strength. Steep slopes combined with the strength and hydraulic characteristics of the deposits leave the bluffs prone to slope instability, particularly during the wet season when infiltrating rainfall changes moisture content, pore-water pressure, and effective stress within the hillslope. The instrumentation was designed to primarily observe rainfall variability and hydrologic changes in the subsurface that can affect stability of the bluffs, and also to compare the hydrologic

  20. Pengendalian Aliran Pasif pada Silinder Sirkular dengan Inlet Disturbance Body Berbentuk Silinder Elip (AR = 1/4)

    OpenAIRE

    Wawan Aries Widodo,; Triyogi Yuwono,; P. Indiyono; Wasis Dwi Aryawan

    2009-01-01

    This investigation to observe the information about fluid interaction phenomena from fluid momentum flow attach on surface contour of two bluff body shapes, there are elliptic cylinder and circular cylinder. This characteristic predicts aerodynamic force on the bluff bodies are related with drag reduction. Elliptic cylinder (AR = 1/4) and circular cylinder are arranged tandem position with longitudinal gap (G/D = 1), and are located elliptic cylinder as inlet disturbance body on upstream and ...

  1. Mixing and Recirculation Characteristics of A double COncentric Burner with Bluff—Body

    Institute of Scientific and Technical Information of China (English)

    H.K.Ma; C.H.Chiou; 等

    1993-01-01

    The concentric bluff-body jet burner is widely used in industrial combustion systems.This kind of burner often generates a considerably complex recirculation zone behind the bluff body.As a result,the fuel often remains in the recirculation zone,achieving stability of flame.This study investigates,by means of experiments,the variations of the aerodynamics as the fluid is injected into a combustion chamber through a doble concentric burner with a bluff-body.The observation and measurement of the aerodynamics in our experiment are conducted under a cold flow.The controlled parameters in our experiment are:variations in the blockage ratio of the center bluff body,the cone angle of the bluff body,and the velocity ratio(Us/Up) of the secondary jet and primary jet;the injection of helium bubbles into the primary and secondary jets to observe the recirculation zone behind the bluff body;using Tufts for obseving the characteristics of corner recirculation zone in a combustion chamber,measuring the average velocity of each point within the aerodynamics by the 5-hole pitot tube;measuring the distribution of static pressure of the combustion chamber walls with a static pressure tap.

  2. 78 FR 20942 - Niobrara Confluence and Ponca Bluffs Conservation Areas, NE and SD; Draft Environmental Impact...

    Science.gov (United States)

    2013-04-08

    ... AGENCY: Fish and Wildlife Service, National Park Service, Interior. ACTION: Notice of availability. SUMMARY: We, U.S. Fish and Wildlife Service (FWS) and the National Park Service (NPS), as lead agencies... Fish and Wildlife Service National Park Service Niobrara Confluence and Ponca Bluffs Conservation...

  3. Site investigation of Bluff, May 24-26, 1983: Trip report

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — The objectives of the site visit were to 1) familiarize ourselves with Bluff in relation to present and future proposals to mine by dredge, near-shore sed5ments for...

  4. Wall shear stress characterization of a 3D bluff-body separated flow

    Science.gov (United States)

    Fourrié, Grégoire; Keirsbulck, Laurent; Labraga, Larbi

    2013-10-01

    Efficient flow control strategies aimed at reducing the aerodynamic drag of road vehicles require a detailed knowledge of the reference flow. In this work, the flow around the rear slanted window of a generic car model was experimentally studied through wall shear stress measurements using an electrochemical method. The mean and fluctuating wall shear stress within the wall impact regions of the recirculation bubble and the main longitudinal vortex structures which develop above the rear window are presented. Correlations allow a more detailed characterization of the recirculation phenomenon within the separation bubble. In the model symmetry plane the recirculation structure compares well with simpler 2D configurations; specific lengths, flapping motion and shedding of large-scale vortices are observed, these similarities diminish when leaving the middle plane due to the strong three-dimensionality of the flow. A specific attention is paid to the convection processes occurring within the recirculation: a downstream convection velocity is observed, in accordance with 2D recirculations from the literature, and an upstream convection is highlighted along the entire bubble length which has not been underlined in some previous canonical configurations.

  5. Evaluation of LES models for flow over bluff body from engineering application perspective

    Indian Academy of Sciences (India)

    S Vengadesan; A Nakayama

    2005-02-01

    Three SGS stress closure LES models are evaluated for turbulent flow over a square cylinder. Emphasis is placed on solving engineering-applicationtype problems on affordable computer resources and within reasonable turnaround times. Results are compared with available experimental data and previously published workshop results. Numerical strategies are kept the same for all the cases. Results are also discussed keeping in view limitations of LES methodology of modelling for practical problems and current developments. It is concluded that a one-equation model for subgrid kinetic energy is the best choice.

  6. A simulation of a bluff-body stabilized turbulent premixed flame using LES-PDF

    Science.gov (United States)

    Kim, Jeonglae; Pope, Stephen

    2013-11-01

    A turbulent premixed flame stabilized by a triangular cylinder as a flame-holder is simulated. The computational condition matches the Volvo experiments (Sjunnesson et al. 1992). Propane is premixed at a fuel lean condition of ϕ = 0 . 65 . For this reactive simulation, LES-PDF formulation is used, similar to Yang et al. (2012). The evolution of Lagrangian particles is simulated by solving stochastic differential equations modeling transport of the composition PDF. Mixing is modeled by the modified IEM model (Viswanathan et al. 2011). Chemical reactions are calculated by ISAT and for the good load balancing, PURAN distribution of ISAT tables is applied (Hiremath et al. 2012). To calculate resolved density, the two-way coupling (Popov & Pope 2013) is applied, solving a transport equation of resolved specific volume to reduce statistical noise. A baseline calculation shows a good agreement with the experimental measurements in turbulence statistics, temperature, and minor species mass fractions. Chemical reaction does not significantly contribute to the overall computational cost, in contrast to non-premixed flame simulations (Hiremath et al. 2013), presumably due to the restricted manifold of the purely premixed flame in the composition space.

  7. Massive separation around bluff bodies: comparisons among different cfd solvers and turbulence models

    Science.gov (United States)

    Armenio, Vincenzo; Fakhari, Ahmad; Petronio, Andrea; Padovan, Roberta; Pittaluga, Chiara; Caprino, Giovanni

    2015-11-01

    Massive flow separation is ubiquitous in industrial applications, ruling drag and hydrodynamic noise. In spite of considerable efforts, its numerical prediction still represents a challenge for CFD models in use in engineering. Aside commercial software, over the latter years the opensource software OpenFOAMR (OF) has emerged as a valid tool for prediction of complex industrial flows. In the present work, we simulate two flows representative of a class of situations occurring in industrial problems: the flow around sphere and that around a wall-mounted square cylinder at Re = 10000 . We compare the performance two different tools, namely OF and ANSYS CFX 15.0 (CFX) using different unstructured grids and turbulence models. The grids have been generated using SNAPPYHEXMESH and ANSYS ICEM CFD 15.0 with different near wall resolutions. The codes have been run in a RANS mode using k - ɛ model (OF) and SST - k - ω (CFX) with and without wall-layer models. OF has been also used in LES, WMLES and DES mode. Regarding the sphere, RANS models were not able to catch separation, while good prediction of separation and distribution of stresses over the surface were obtained using LES, WMLES and DES. Results for the second test case are currently under analysis. Financial support from COSMO ``cfd open source per opera mortta'' PAR FSC 2007-2013, Friuli Venezia Giulia.

  8. Control of wake destructive behavior for different bluff bodies in channel flow by magnetohydrodynamics

    Science.gov (United States)

    Bovand, M.; Rashidi, S.; Esfahani, J. A.; Masoodi, R.

    2016-06-01

    Control of wake structure may lead to a reduction in the unsteady forces and vibrations in the marine structures. In this paper, the finite-volume method (FVM) is used to simulate the flow around two-dimensional obstacles with different cross-sections. Maxwell equations are used to provide the coupling between the flow field and the magnetic field. The range of Stuart ( Su and Reynolds ( Re numbers are 0-10 and 1-200, respectively. The effects of the magnetic field on the control of the wake structure and vortex shedding behind the obstacles are investigated in details. Moreover, an analogy has been performed between different configurations. Finally, several empirical equations for steadiness and disappearance Stuart numbers are presented for each obstacle. It was found that the diamond and circular configurations have the largest and smallest effects on steadiness and disappearance Stuart numbers among all the configurations. Additionally, it was observed that the drag coefficient slowly reduces by exerting the magnetic field at low Stuart numbers.

  9. Modeling Flow around Bluff Bodies and Predicting Urban Dispersion Using Large Eddy Simulation

    OpenAIRE

    Tseng, Yu-heng; Meneveau, Charles; Parlange, Marc

    2006-01-01

    Modeling air pollutant transport and dispersion in urban environments is especially challenging due to complex ground topography. In this study, we describe a large eddy simulation (LES) tool including a new dynamic subgrid closure and boundary treatment to model urban dispersion problems. The numerical model is developed, validated, and extended to a realistic urban layout. In such applications fairly coarse grids must be used in which each building can be represented using relatively few gr...

  10. Numerical quantification of aerodynamic damping on pitching of vehicle-inspired bluff body

    Science.gov (United States)

    Cheng, S. Y.; Tsubokura, M.; Nakashima, T.; Okada, Y.; Nouzawa, T.

    2012-04-01

    The influence of transient flows on vehicle stability was investigated by large eddy simulation. To consider the dynamic response of a vehicle to real-life transient aerodynamics, a dimensionless parameter that quantifies the amount of aerodynamic damping for vehicle subjects to pitching oscillation is proposed. Two vehicle models with different stability characteristics were created to verify the parameter. For idealized notchback models, underbody has the highest contribution to the total aerodynamic damping, which was up to 69%. However, the difference between the aerodynamic damping of models with distinct A- and C-pillar configurations mainly depends on the trunk-deck contribution. Comparison between dynamically obtained phase-averaged pitching moment with quasi-steady values shows totally different aerodynamic behaviors.

  11. Emissions of nitrogen oxides from partially premixed flames stabilized on a conical bluff body

    OpenAIRE

    Dutka, Marcin Damian

    2015-01-01

    Carbon capture and storage (CCS) technologies allow for the reduction of carbon dioxide (CO2) emissions from the combustion sources of fossil fuels. One such technology is based on the use of hydrogen or hydrogen-enriched fuels and allows for a significant reduction of CO2 emissions. All regulated pollutant emissions, except for harmful nitrogen oxides (NOx), can also be reduced using hydrogen. Hydrogen’s unique properties are challenging for burner designers. High hydrogen-air...

  12. Spatio-temporal Dynamics of Coastal Bluff Erosion near Barrow Alaska over the Past Decade

    Science.gov (United States)

    Kofoed, K. B.; Lopez, A. F.; Aguirre, A.; Aiken, Q.; Cody, R. P.; Gaylord, A. G.; Manley, W. F.; Green, E.; Nelson, L.; Lougheed, V.; Velasco, A. A.; Tweedie, C. E.

    2014-12-01

    Arctic coastal systems are recognized as being one of the most climate change - vulnerable ecosystems on Earth and represent a complex nexus for examining change at the interface between marine, terrestrial, atmospheric, cryospheric and social systems. Although coastal erosion has received increased attention in the Arctic, few studies have examined the fine scale spatiotemporal dynamics and variability in erosion rates relative to the range of factors that act concomitantly to control erosion (e.g. duration of ice free seas, bathymetry, wave action, sea and air temperature, landscape morphology). This study reports on the spatiotemporal dynamics of annual DGPS surveys of eroding coastal bluffs in northern Alaska near the city of Barrow. Surveys along ca. 11km of the Elson Lagoon coast have been conducted since 2002 and additional surveys along ca. 120km of Elson Lagoon and Chuckhi Sea coast have been conducted since 2013. There has been strong inter-annual spatiotemporal variability in erosion rates with no indication of a long term change in erosion rates over time. Factors controlling wave intensity (e.g. wind run, off shore bathymetry, aspect of the coast relative to prevailing winds) explain most variability in erosion rates over time but during relatively calm periods, landscape history and morphology become more important. These findings highlight the extreme fine scale spatiotemporal heterogeneity in erosion rates along the Arctic Coast, and the importance of incorporating both storm-related climatic events and landscape characteristics when forecasting future environmental states in Arctic coastal landscapes. Case studies outlining new remote sensing technologies and future directions of study will also be outlined including terrestrial and airborne LiDAR, and Kite, UAV, and satellite imagery that is being used to derive and monitor topographic and hydrological change near eroding coastal bluffs; a wireless sensor network of micrometeorological and optical

  13. The effect of a large upstream bluff body on the flow through and around an array of cylinders

    Science.gov (United States)

    Klettner, Christian

    2015-11-01

    Risers from the sea floor to installations at the sea surface are an integral part of the flow assurance of deep sea oil exploration, which has become necessary in the last decade. These risers are subjected to various hydrodynamic forcing, particularly sea currents, wakes of upstream installation members and surface waves, which can result in vortex or wake induced vibrations and these in turn can result in riser fatigue or collision. The free stream flow past groups of cylinders has been studied numerically in two- and three-dimensions for Re ~ O (103) (based on the cylinder diameter) by Nicolle & Eames (2011) (direct numerical simulations) and Chang & Constantinescu (2015) (large eddy simulations) respectively. In this study we will be focusing on the first two aspects listed above, specifically laboratory experiments and high resolution numerical simulations will be performed to investigate the effect of an upstream truss on an array of cylinders. The main diagnostic will be how varying the void fraction of the array of cylinders affects the frequency and magnitude of the drag and lift forces on the cylinders.

  14. Environmental Assessment of the Gering-Stegall 115-kV Transmission Line Consolidation Project, Scotts Bluff County, Nebraska

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-05-01

    The Department of Energy (DOE), Western Area Power Administration (Western) proposes to consolidate segments of two transmission lines near the Gering Substation in Gering, Nebraska. The transmission lines are both located in Scotts Bluff County, Nebraska. The transmission lines are both located in Scotts Bluff County, Nebraska, within the city of Gering. Presently, there are three parallel 115-kilovolt (kV) transmission lines on separate rights-of-way (ROW) that terminate at the Gering Substation. The project would include dismantling the Archer-Gering wood-pole transmission line and rebuilding the remaining two lines on single-pole steel double circuit structures. The project would consolidate the Gering-Stegall North and Gering-Stegall South 115-kV transmission lines on to one ROW for a 1.33-mile segment between the Gering Substation and a point west of the Gering Landfill. All existing wood-pole H-frame structures would be removed, and the Gering-Stegall North and South ROWs abandoned. Western is responsible for the design, construction, operation, and maintenance of the line. Western prepared an environmental assessment (EA) that analyzed the potential environmental impacts of the proposed construction, operation, and maintenance of the 115-kV transmission line consolidation. Based on the analyses in the EA, the DOE finds that the proposed action is not a major Federal action significantly affecting the quality of the human environment, within the meaning of the National Environmental Policy Act of 1969 (NEPA).

  15. Environmental Assessment of the Gering-Stegall 115-kV Transmission Line Consolidation Project, Scotts Bluff County, Nebraska

    International Nuclear Information System (INIS)

    The Department of Energy (DOE), Western Area Power Administration (Western) proposes to consolidate segments of two transmission lines near the Gering Substation in Gering, Nebraska. The transmission lines are both located in Scotts Bluff County, Nebraska. The transmission lines are both located in Scotts Bluff County, Nebraska, within the city of Gering. Presently, there are three parallel 115-kilovolt (kV) transmission lines on separate rights-of-way (ROW) that terminate at the Gering Substation. The project would include dismantling the Archer-Gering wood-pole transmission line and rebuilding the remaining two lines on single-pole steel double circuit structures. The project would consolidate the Gering-Stegall North and Gering-Stegall South 115-kV transmission lines on to one ROW for a 1.33-mile segment between the Gering Substation and a point west of the Gering Landfill. All existing wood-pole H-frame structures would be removed, and the Gering-Stegall North and South ROWs abandoned. Western is responsible for the design, construction, operation, and maintenance of the line. Western prepared an environmental assessment (EA) that analyzed the potential environmental impacts of the proposed construction, operation, and maintenance of the 115-kV transmission line consolidation. Based on the analyses in the EA, the DOE finds that the proposed action is not a major Federal action significantly affecting the quality of the human environment, within the meaning of the National Environmental Policy Act of 1969 (NEPA)

  16. Modeling 3-D Slope Stability of Coastal Bluffs Using 3-D Ground-Water Flow, Southwestern Seattle, Washington

    Science.gov (United States)

    Brien, Dianne L.; Reid, Mark E.

    2007-01-01

    Landslides are a common problem on coastal bluffs throughout the world. Along the coastal bluffs of the Puget Sound in Seattle, Washington, landslides range from small, shallow failures to large, deep-seated landslides. Landslides of all types can pose hazards to human lives and property, but deep-seated landslides are of significant concern because their large areal extent can cause extensive property damage. Although many geomorphic processes shape the coastal bluffs of Seattle, we focus on large (greater than 3,000 m3), deepseated, rotational landslides that occur on the steep bluffs along Puget Sound. Many of these larger failures occur in advance outwash deposits of the Vashon Drift (Qva); some failures extend into the underlying Lawton Clay Member of the Vashon Drift (Qvlc). The slope stability of coastal bluffs is controlled by the interplay of three-dimensional (3-D) variations in gravitational stress, strength, and pore-water pressure. We assess 3-D slope-stability using SCOOPS (Reid and others, 2000), a computer program that allows us to search a high-resolution digital-elevation model (DEM) to quantify the relative stability of all parts of the landscape by computing the stability and volume of thousands of potential spherical failures. SCOOPS incorporates topography, 3-D strength variations, and 3-D pore pressures. Initially, we use our 3-D analysis methods to examine the effects of topography and geology by using heterogeneous material properties, as defined by stratigraphy, without pore pressures. In this scenario, the least-stable areas are located on the steepest slopes, commonly in Qva or Qvlc. However, these locations do not agree well with observations of deep-seated landslides. Historically, both shallow colluvial landslides and deep-seated landslides have been observed near the contact between Qva and Qvlc, and commonly occur in Qva. The low hydraulic conductivity of Qvlc impedes ground-water flow, resulting in elevated pore pressures at the

  17. The Overall Drag Losses For A Combination of Bodies

    OpenAIRE

    Sabah Al-Janabi

    2013-01-01

    The objective of this work is to obtain better understanding of the flow over a combination of bluff bodies in close enough proximity to strongly interact with each other. This interaction is often beneficial in that the drag of the overall system is reduced. Proto-types for this problem come from tractor- trailer and missiles, and from various add-on devices designed to reduce their drag. Thus, an experimental investigation was carried out by placing  conical frontal bodies having a base dia...

  18. "To Bluff like a Man or Fold like a Girl?" – Gender Biased Deceptive Behavior in Online Poker

    Science.gov (United States)

    Palomäki, Jussi; Yan, Jeff; Modic, David; Laakasuo, Michael

    2016-01-01

    Evolutionary psychology suggests that men are more likely than women to deceive to bolster their status and influence. Also gender perception influences deceptive behavior, which is linked to pervasive gender stereotypes: women are typically viewed as weaker and more gullible than men. We assessed bluffing in an online experiment (N = 502), where participants made decisions to bluff or not in simulated poker tasks against opponents represented by avatars. Participants bluffed on average 6% more frequently at poker tables with female-only avatars than at tables with male-only or gender mixed avatars—a highly significant effect in games involving repeated decisions. Nonetheless, participants did not believe the avatar genders affected their decisions. Males bluffed 13% more frequently than females. Unlike most economic games employed exclusively in research contexts, online poker is played for money by tens of millions of people worldwide. Thus, gender effects in bluffing have significant monetary consequences for poker players. PMID:27383472

  19. "To Bluff like a Man or Fold like a Girl?" - Gender Biased Deceptive Behavior in Online Poker.

    Science.gov (United States)

    Palomäki, Jussi; Yan, Jeff; Modic, David; Laakasuo, Michael

    2016-01-01

    Evolutionary psychology suggests that men are more likely than women to deceive to bolster their status and influence. Also gender perception influences deceptive behavior, which is linked to pervasive gender stereotypes: women are typically viewed as weaker and more gullible than men. We assessed bluffing in an online experiment (N = 502), where participants made decisions to bluff or not in simulated poker tasks against opponents represented by avatars. Participants bluffed on average 6% more frequently at poker tables with female-only avatars than at tables with male-only or gender mixed avatars-a highly significant effect in games involving repeated decisions. Nonetheless, participants did not believe the avatar genders affected their decisions. Males bluffed 13% more frequently than females. Unlike most economic games employed exclusively in research contexts, online poker is played for money by tens of millions of people worldwide. Thus, gender effects in bluffing have significant monetary consequences for poker players. PMID:27383472

  20. Extreme rates of riverbank erosion of the high bluff formed by the ice-rich syngenetic permafrost (yedoma), Itkillik River, Northern Alaska

    Science.gov (United States)

    Kanevskiy, M. Z.; Shur, Y.; Fortier, D.; Jorgenson, T.; Stephani, E.; Strauss, J.

    2013-12-01

    Riverbank erosion in areas underlain by ice-rich permafrost is strongly affected by the processes of thawing of ground ice, which include (1) thermal erosion, and (2) thermal denudation. Thermal erosion is a process of combined thermal and mechanical action of moving water, which results in simultaneous thawing of frozen soil and its removal by water. Thermal erosion can cause block collapse of eroded banks. Thermal denudation is a process of thawing of frozen soils exposed in the bluff due to solar energy and consequent removal of thawed soils by gravity. Studies of riverbank and coastal erosion revealed that the highest rates of erosion are typical of bluffs composed by yedoma (ice- and organic-rich syngenetically frozen silty deposits). Yedoma deposits can be up to 50 m thick, and they contain huge ice wedges up to 10 m wide. Since 2006, we have studied the process of riverbank erosion of the 35 m high exposure of yedoma along the Itkillik River in northern Alaska. Based on five measurements of the areas occupied by wedge ice in panoramic photographs taken in 2006, 2007, 2011, and 2012, the average wedge-ice volume makes 61% of the entire exposed bluff. The total volumetric ground ice content of the Itkillik yedoma, including wedge, segregated and pore ice, is 85%. We detect three main stages of the riverbank erosion for the study site and other similar sites in the areas of ice-rich permafrost: (1) thermal erosion combined with thermal denudation, (2) thermal denudation, and (3) slope stabilization. The first stage includes formation of thermoerosional niches; development of sub-vertical cracks and block-fall collapse of cornices; and thawing and disintegration of blocks of ground ice and frozen soil in the water. All these processes are accompanied by thermal denudation of the exposed bluff. On August 16, 2007, a big portion of the bluff fell down along the crack sub-parallel to the bluff. As a result, the vertical wall more than 65 m long entirely formed by

  1. Aerial radiometric and magnetic reconnaissance survey of portions of Arkansas, Illinois, Indiana, Kentucky, Missouri, and Tennessee: Dyersburg, Paducah, Poplar Bluff, and Rolla quadrangles, final report. Volume 1 and Volume 2C. Poplar Bluff quadrangle

    International Nuclear Information System (INIS)

    Instrumentation and methods described were used for a Department of Energy (DOE) sponsored, high-sensitivity, aerial gamma-ray spectrometer and magnetometer survey of Dyersburg (Kentucky, Missouri, Tennessee); Paducah (Indiana, Illinois, Kentucky, Missouri); Poplar Bluff (Arkansas, Missouri); and Rolla (Missouri) NTMS, 1:250,000-scale quadrangle. The survey was carried out by Texas Instruments Incorporated under Bendix Field Engineering Corporation Subcontract No. 78-285-L. The objective of the work was to define areas showing surface indications of a generally higher uranium content where detailed exploration for uranium would most likely be successful. A DC-3 aircraft equipped with a high-sensitivity gamma-ray spectrometer and ancillary geophysical and electronic equipment was employed for each quadrangle. The system was calibratd using the DOE calibration facilities at Grand Junction, Colorado, and Lake Mead, Arizona. Gamma-ray spectrometric data were processed to correct for variations in atmospheric, flight, and instrument conditions and were statistically evaluated to remove the effects of surface geologic variations. The resulting first-priority uranium anomalies (showing simultaneously valid eU, eU/eTh, and eU/K anomalies) were interpreted to evaluate their origin and significance. Results of the interpretation in the form of a preferred-anomaly map, along with significance-factor profile maps, stacked profiles, histograms, and descriptions of the geology and known uranium occurrences are presented in Volume 2 of this final report

  2. Low-order modeling of wind farm aerodynamics using leaky Rankine bodies

    OpenAIRE

    Araya, Daniel B.; Craig, Anna E.; Kinzel, Matthias; Dabiri, John O.

    2014-01-01

    We develop and characterize a low-order model of the mean flow through an array of vertical-axis wind turbines (VAWTs), consisting of a uniform flow and pairs of potential sources and sinks to represent each VAWT. The source and sink in each pair are of unequal strength, thereby forming a “leaky Rankine body” (LRB). In contrast to a classical Rankine body, which forms closed streamlines around a bluff body in potential flow, the LRB streamlines have a qualitatively similar appearance to a sep...

  3. Interglacial Extension of the Boreal Forest Limit in the Noatak Valley, Northwest Alaska: Evidence from an Exhumed River-Cut Bluff and Debris Apron

    Science.gov (United States)

    Edwards, M.E.; Hamilton, T.D.; Elias, S.A.; Bigelow, N.H.; Krumhardt, A.P.

    2003-01-01

    Numerous exposures of Pleistocene sediments occur in the Noatak basin, which extends for 130 km along the Noatak River in northwestern Alaska. Nk-37, an extensive bluff exposure near the west end of the basin, contains a record of at least three glacial advances separated by interglacial and interstadial deposits. An ancient river-cut bluff and associated debris apron is exposed in profile through the central part of Nk-37. The debris apron contains a rich biotic record and represents part of an interglaciation that is probably assignable to marine-isotope stage 5. Pollen spectra from the lower part of the debris apron closely resemble modern samples taken from the Noatak floodplain in spruce gallery forest, and macrofossils of spruce are also present at this level. Fossil bark beetles and carpenter ants occur higher in the debris apron. Mutual Climatic Range (MCR) estimates from the fossil beetles suggest temperatures similar to or warmer than today. Together, these fossils indicate the presence of an interglacial spruce forest in the western part of the Noatak Basin, which lies about 80 km upstream of the modern limit of spruce forest.

  4. LARGE EDDY SIMULATION OF TURBULENT FLOW OVER MARGINALLY RESOLVED THREE BLUFF BODIES USING AN IMMERSED BOUNDARY METHOD AND LAGRANGIAN DYNAMIC EDDY-VISCOSITY MODELS. (R828771C004)

    Science.gov (United States)

    The perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Concl...

  5. Research on Vibration Characteristic of Dual Bluff Body Vortex Street Flowmeter%双钝体涡流量计流体振动特性研究

    Institute of Scientific and Technical Information of China (English)

    张平; 彭杰刚; 傅新; 陈鹰

    2001-01-01

    涡街流量计测量应用广泛,但小流量信噪比低、抗干扰性能差.本论文提出以双钝体组合强化流体振动,从而降低涡街流量计的计量下限,提高其抗干扰性能.通过实验研究获得了优化的双钝体组合,表明双钝体组合能达到强化流体振动和提高流量计信噪比的目的.

  6. PDF model based on Langevin equation for polydispersed two-phase flows applied to a bluff-body gas-solid flow,

    CERN Document Server

    Minier, J P; Chibbaro, S

    2010-01-01

    The aim of the paper is to discuss the main characteristics of a complete theoretical and numerical model for turbulent polydispersed two-phase flows, pointing out some specific issues. The theoretical details of the model have already been presented [Minier and Peirano, Physics Reports, Vol. 352/1-3, 2001 ]. Consequently, the present work is mainly focused on complementary aspects, that are often overlooked and that require particular attention. In particular, the following points are analysed : the necessity to add an extra term in the equation for the velocity of the fluid seen in the case of twoway coupling, the theoretical and numerical evaluations of particle averages and the fulfilment of the particle mass-continuity constraint. The theoretical model is developed within the PDF formalism. The important-physical choice of the state vector variables is first discussed and the model is then expressed as a stochastic differential equation (SDE) written in continuous time (Langevin equations) for the veloci...

  7. Pengendalian Aliran Pasif pada Silinder Sirkular dengan Inlet Disturbance Body Berbentuk Silinder Elip (AR = 1/4

    Directory of Open Access Journals (Sweden)

    Wawan Aries Widodo

    2009-01-01

    Full Text Available This investigation to observe the information about fluid interaction phenomena from fluid momentum flow attach on surface contour of two bluff body shapes, there are elliptic cylinder and circular cylinder. This characteristic predicts aerodynamic force on the bluff bodies are related with drag reduction. Elliptic cylinder (AR = 1/4 and circular cylinder are arranged tandem position with longitudinal gap (G/D = 1, and are located elliptic cylinder as inlet disturbance body on upstream and circular cylinder as downstream body. The inlet disturbance body has four shapes, first elliptic cylinder without modification geometry, and the others with modification geometry to cut in front of elliptic cylinder with configuration 5%, 10%, and 15% of major axis length (B. Fluid flow characteristics investigate experimentally on open-circuit subsonic wind tunnel. The experimental results obtain the phenomena fluid interactions are indicated by reattachment process which is related with appearing bubble and massive separation on the surface contour of modified elliptic cylinder. Separating and reattching process is increasing flow transition from laminar to turbulent boundary layer until the postponement of massive separation position on surface contour of circular cylinder. To arrange elliptic cylinder (AR = 1/4 with modification geometry to cut front side 10% from length of major axis as inlet disturbance body gives significant results to reduce drag of circular cylinder. All investigations are running at Reynolds Number of 6.4x104 based on circular cylinder diameter. Abstract in Bahasa Indonesia: Penelitian ini adalah untuk mendapatkan informasi mengenai fenomena interaksi aliran dari momentum fluida yang attach pada kontur permukaan bluff body berbentuk silinder elip maupun silinder sirkular. Karakteristik tersebut digunakan untuk memprediksi gaya aerodinamika pada kedua benda tersebut, terutama berkenaan dengan reduksi gaya hambat (drag reduction. Kedua

  8. Fluidic Control of Aerodynamic Forces on an Axisymmetric Body

    Science.gov (United States)

    Abramson, Philip; Vukasinovic, Bojan; Glezer, Ari

    2007-11-01

    The aerodynamic forces and moments on a wind tunnel model of an axisymmetric bluff body are modified by induced local vectoring of the separated base flow. Control is effected by an array of four integrated aft-facing synthetic jets that emanate from narrow, azimuthally-segmented slots, equally distributed around the perimeter of the circular tail end within a small backward facing step that extends into a Coanda surface. The model is suspended in the wind tunnel by eight thin wires for minimal support interference with the wake. Fluidic actuation results in a localized, segmented vectoring of the separated base flow along the rear Coanda surface and induces asymmetric aerodynamic forces and moments to effect maneuvering during flight. The aerodynamic effects associated with quasi-steady and transitory differential, asymmetric activation of the Coanda effect are characterized using direct force and PIV measurements.

  9. Body Hygiene

    Science.gov (United States)

    ... Home Diaper-Changing Steps for Childcare Settings Body Hygiene Dental Hygiene Water Fluoridation Facial Cleanliness Fish Pedicures and ... spread of hygiene-related diseases . Topics for Body Hygiene Facial Cleanliness Dental Hygiene Water Fluoridation Fish Pedicures and Fish Spas ...

  10. Body Image

    Science.gov (United States)

    ... Help your child have a healthy body image Cosmetic surgery Breast surgery Botox Liposuction Varicose or spider veins Body dysmorphic disorder (BDD) Eating disorders Anorexia nervosa Binge eating ... nervosa Cosmetics and your health Depression during and after pregnancy ...

  11. Body Basics

    Science.gov (United States)

    ... about how the body works, what basic human anatomy is, and what happens when parts of the body don't function properly. Blood Bones, Muscles, and Joints Brain and Nervous System Digestive System Endocrine System Eyes Female Reproductive System ...

  12. Body embellishment

    OpenAIRE

    Zellweger, Christoph

    2015-01-01

    The exhibition Body Embellishment explores the most innovative artistic expression in the 21st-century international arenas of body extension, augmentation, and modification, focusing on jewelry, tattoos, nail arts, and fashion. The areas of focus are jewelry, tattoos, nail arts, and fashion. Avant-garde jewelry consciously engages the body by intersecting and expanding the planes of the human form. Tattoos are at once on and in the body. Nail art, from manicures to pedicures, has humble ...

  13. Body Clock

    Institute of Scientific and Technical Information of China (English)

    刘洪毓

    2000-01-01

    Body clocks” are biological methods of controling body activities.Every living thing has one. In humans, a body clock controls normal periods of sleeping and waking. It controls the time swhen you are most likely to feel pain.Eating, sleeping and exercising at about the same time each day will help keep body activities normal. But changes in your life, a new job, for example, destroy the balance and thus cause health problems.

  14. Health assessment for Mid-America Tanning Company, Sergeant Bluff, Woodbury County, Iowa, Region 7. CERCLIS No. IAD085824688. Preliminary report

    Energy Technology Data Exchange (ETDEWEB)

    1990-06-08

    The Mid-America Tanning Company (MAT) Site is proposed to be listed by the U.S. Environmental Protection Agency (EPA) on the National Priorities List (NPL). Mid-America Tanning, now U.S. Tanning, is an animal hide processing plant located on 98.7 acres approximately five miles south of Sergeant Bluff, Woodbury County, Iowa. From June 1978 to the present, use of chromium has been extended to the entire process, which involves the treatment of approximately 1000 hides per day. The process utilizes trivalent chromium and produces waste sludge and liquids that are treated on-site at the company wastewater treatment facility. Based on the available information, this site is considered to be of potential public health concern because of the risk to human health caused by the likelihood of exposure to hazardous substances via groundwater, surface water and soil. Further environmental characterization and sampling of the site and impacted off-site areas during the Remedial Investigation and Feasibility Study (RI/FS) should be conducted to address the environmental and human exposure pathways discussed above and to further define the extent of contamination at the site.

  15. Body punk

    DEFF Research Database (Denmark)

    Mogensen, Kevin

    BODYPUNK - A Treatise on male body builders and the meaning of the body in the shadow of an Anti Doping Campaign Based on a qualitative study, the thesis investigates the visual representation of the male bodybuilder found in the national anti doping campaign: ‗ "The hunt has begun" along...... with an analysis of the embodied meaning of men‘s bodybuilding....

  16. Body punk

    DEFF Research Database (Denmark)

    Mogensen, Kevin

    BODYPUNK - A Treatise on male body builders and the meaning of the body in the shadow of an Anti Doping Campaign Based on a qualitative study, the thesis investigates the visual representation of the male bodybuilder found in the national anti doping campaign: ‗ "The hunt has begun" along with an...... analysis of the embodied meaning of men‘s bodybuilding....

  17. Body Language

    Institute of Scientific and Technical Information of China (English)

    JosephDeVeto

    2004-01-01

    When we speak,we use much more than just words. We also communicate with our face. our hands,and even our own body. This Kind of communication ean be called “body language” or “non-verbal eommunieation”. Non-verbal

  18. Body Weight and Body Image

    OpenAIRE

    McFarlane Traci; Olmsted Marion P

    2004-01-01

    Abstract Health Issue Body weight is of physical and psychological importance to Canadian women; it is associated with health status, physical activity, body image, and self-esteem. Although the problems associated with overweight and obesity are indeed serious, there are also problems connected to being underweight. Weight prejudice and the dieting industry intensify body image concerns for Canadian women and can have a major negative impact on self-esteem. Key Findings Women have lower BMIs...

  19. Habitat quality and recruitment success of cui-ui in the Truckee River downstream of Marble Bluff Dam, Pyramid Lake, Nevada

    Science.gov (United States)

    Scoppettone, G. Gary; Rissler, Peter H.; Salgado, J. Antonio; Harry, Beverly

    2013-01-01

    We compared cui-ui (Chasmistes cujus) recruitment from two reaches of the Truckee River with histories of severe erosional downcutting caused by a decline in Pyramid Lake surface elevation. In 1975, Marble Bluff Dam (MBD) was constructed 5 kilometers upstream of the extant mouth of the Truckee River to stabilize the upstream reach of the river; the downstream reach of the river remained unstable and consequently unsuitable for cui-ui recruitment. By the early 2000s, there was a decrease in the Truckee River’s slope from MBD to Pyramid Lake after a series of wet years in the 1990s. This was followed by changes in river morphology and erosion abatement. These changes led to the question as to cui-ui recruitment potential in the Truckee River downstream of MBD. In 2012, more than 7,000 cui-ui spawners were passed upstream of MBD, although an indeterminate number of cui-ui spawned downstream of MBD. In this study, we compared cui-ui recruitment upstream and downstream of MBD during a Truckee River low-flow year (2012). Cui-ui larvae emigration to Pyramid Lake began earlier and ended later downstream of MBD. A greater number of cui-ui larvae was produced downstream of MBD than upstream. This also was true for native Tahoe sucker (Catostomus tahoensis) and Lahontan redside (Richardsonius egregius). The improved Truckee River stability downstream of MBD and concomitant cui-ui recruitment success is attributed to a rise in Pyramid Lake's surface elevation. A decline in lake elevation may lead to a shift in stream morphology and substrate composition to the detriment of cui-ui reproductive success as well as the reproductive success of other native fishes.

  20. Integrating Near-Real Time Hydrologic-Response Monitoring and Modeling for Improved Assessments of Slope Stability Along the Coastal Bluffs of the Puget Sound Rail Corridor, Washington State

    Science.gov (United States)

    Mirus, B. B.; Baum, R. L.; Stark, B.; Smith, J. B.; Michel, A.

    2015-12-01

    Previous USGS research on landslide potential in hillside areas and coastal bluffs around Puget Sound, WA, has identified rainfall thresholds and antecedent moisture conditions that correlate with heightened probability of shallow landslides. However, physically based assessments of temporal and spatial variability in landslide potential require improved quantitative characterization of the hydrologic controls on landslide initiation in heterogeneous geologic materials. Here we present preliminary steps towards integrating monitoring of hydrologic response with physically based numerical modeling to inform the development of a landslide warning system for a railway corridor along the eastern shore of Puget Sound. We instrumented two sites along the steep coastal bluffs - one active landslide and one currently stable slope with the potential for failure - to monitor rainfall, soil-moisture, and pore-pressure dynamics in near-real time. We applied a distributed model of variably saturated subsurface flow for each site, with heterogeneous hydraulic-property distributions based on our detailed site characterization of the surficial colluvium and the underlying glacial-lacustrine deposits that form the bluffs. We calibrated the model with observed volumetric water content and matric potential time series, then used simulated pore pressures from the calibrated model to calculate the suction stress and the corresponding distribution of the factor of safety against landsliding with the infinite slope approximation. Although the utility of the model is limited by uncertainty in the deeper groundwater flow system, the continuous simulation of near-surface hydrologic response can help to quantify the temporal variations in the potential for shallow slope failures at the two sites. Thus the integration of near-real time monitoring and physically based modeling contributes a useful tool towards mitigating hazards along the Puget Sound railway corridor.

  1. Bog bodies

    DEFF Research Database (Denmark)

    Lynnerup, Niels

    2015-01-01

    the bog bodies have been studied using medical and natural scientific methods, and recently many bog bodies have been re-examined using especially modern, medical imaging techniques. Because of the preservation of soft tissue, especially the skin, it has been possible to determine lesions and trauma...... and shrink, leading to potential pitfalls in paleopathological diagnostics. Bog bodies have in several instances been crucial in determining the last meal, as gut contents may be preserved, and thus augment our knowledge on pre-historic diet by adding to, for example, stable isotope analyses. This article...

  2. Body Language

    Institute of Scientific and Technical Information of China (English)

    王芳

    2008-01-01

    @@ For Teachers: The Wordless Language Spoken by Everyone by Pamela Osment An old saying goes:"Actions speak louder than words."That's true according to communication experts.Some studies show that up to 90 percent of communication is nonverbal.Though you might say one thing,your body movements may indicate something entirely different.This nonverbal way of communicating is called body language.The Universal(通用的)Language

  3. Direct measurements of controlled aerodynamic forces on a wire-suspended axisymmetric body

    Science.gov (United States)

    Abramson, Philip; Vukasinovic, Bojan; Glezer, Ari

    2011-06-01

    A novel in-line miniature force transducer is developed for direct measurements of the net aerodynamic forces and moments on a bluff body. The force transducers are integrated into each of the eight mounting wires that are utilized for suspension of an axisymmetric model in a wind tunnel having minimal wake interference. The aerodynamic forces and moments on the model are altered by induced active local attachment of the separated base flow. Fluidic control is effected by an array of four integrated aft-facing synthetic jet actuators that emanate from narrow, azimuthally segmented slots, equally distributed around the perimeter of the circular tail end. The jet orifices are embedded within a small backward-facing step that extends into a Coanda surface. The altered flow dynamics associated with both quasi-steady and transitory asymmetric activation of the flow control effect is characterized by direct force and PIV measurements.

  4. Resonances in the forced turbulent wake past a 3D blunt body

    Science.gov (United States)

    Barros, Diogo; Borée, Jacques; Noack, Bernd R.; Spohn, Andreas

    2016-06-01

    We study the resonances of a forced turbulent wake past a flat-based bluff body using symmetric and antisymmetric actuation modes. The natural, unforced wake flow exhibits broadband dynamics superimposed on oscillatory motions linked to the reminiscent laminar Bénard-von Kármán instability in the turbulent flow. Harmonic and subharmonic resonances can be controlled by the phase relationship of periodic forcing and are linked to the symmetry properties of vortex shedding. Symmetric forcing leads to a strong subharmonic amplification of vortex shedding in the wake, but no harmonic excitation. The robustness of the subharmonic resonance is confirmed at different Reynolds numbers. Antisymmetric actuation, however, promotes a harmonic resonance with very similar wake and drag features.

  5. Body contact and body language

    DEFF Research Database (Denmark)

    Winther, Helle Dagmar

    2008-01-01

    ­ment psychology and education provide potential for intense personal develop­ment as well as for social and cultural learning processes. This performative research project originates from the research project entitled, Movement Psy­chol­ogy: The Language of the Body and the Psy­chol­ogy of Movement based...... on the Dance Therapy Form Dansergia. The author, who is a practi­tioner-researcher, is methodologically inspir­ed by phenomenology, performative methods and a narrative and auto-ethnographic approach. The project will be presented in an organic, cre­at­ive and performative way. Through a moving dia......Body contact and body language are unique and existential and, although culturally dependent and socially embodied, they are also universal communication forms. For small children all over the world, warm, close and nourishing body contact is fundamental to their embodied experi­ence of themselves...

  6. The Overall Drag Losses For A Combination of Bodies

    Directory of Open Access Journals (Sweden)

    Sabah Al-Janabi

    2013-05-01

    Full Text Available The objective of this work is to obtain better understanding of the flow over a combination of bluff bodies in close enough proximity to strongly interact with each other. This interaction is often beneficial in that the drag of the overall system is reduced. Proto-types for this problem come from tractor- trailer and missiles, and from various add-on devices designed to reduce their drag. Thus, an experimental investigation was carried out by placing  conical frontal bodies having a base diameter of 0.65 cylinder diameter with different vertex angles (30°, 50°, 70°, and 90°. It was found that, the bluffer cone with 90° vertex angle gives the best minimum drag, which is 31% lower than the drag of the isolated cylinder. Also an interesting phenomenon was observed in that, the minimum drags for all combinations are obtained at the same gap ratio (i.e.at g/d2= 0.365.

  7. Body Imaging

    Science.gov (United States)

    2001-01-01

    The high-tech art of digital signal processing (DSP) was pioneered at NASA's Jet Propulsion Laboratory (JPL) in the mid-1960s for use in the Apollo Lunar Landing Program. Designed to computer enhance pictures of the Moon, this technology became the basis for the Landsat Earth resources satellites and subsequently has been incorporated into a broad range of Earthbound medical and diagnostic tools. DSP is employed in advanced body imaging techniques including Computer-Aided Tomography, also known as CT and CATScan, and Magnetic Resonance Imaging (MRI). CT images are collected by irradiating a thin slice of the body with a fan-shaped x-ray beam from a number of directions around the body's perimeter. A tomographic (slice-like) picture is reconstructed from these multiple views by a computer. MRI employs a magnetic field and radio waves, rather than x-rays, to create images.

  8. Body Rainbow

    Institute of Scientific and Technical Information of China (English)

    2014-01-01

    Phubu did not know how long hehad walked after leaving Baxoi, buthe did know that he was halfwaybetween home and Lhasa. Feelingthe weight of the sack containingPhumo's body on his back, Fhubuhad calmed down from the grief anddesperation. He had just one wish:to carry Phumo to Lhasa. He knewthat Phumo had gone, and her soulwas no longer in this body. But hewas determined to finish the trip, notonly because he had promised so, butalso that he believed that it would beredemption for him.

  9. Susceptible Bodies

    DEFF Research Database (Denmark)

    Grünenberg, Kristina

    2014-01-01

    is understood as ‘susceptible bodies’ by acupuncturists and reflexologists, are brought into being through various bodily and narrative practices. From a practitioners’ perspective, these practices potentially influence treatment outcomes and enables the emergence of not just new bodies, but also potentially...

  10. Sacralising Bodies

    DEFF Research Database (Denmark)

    Kaur, Ravinder

    2010-01-01

    In post-revolution Iran, the sacred notion of martyrdom has been transformed into a routine act of government – a moral sign of order and state sovereignty. Moving beyond the debates of the secularisation of the sacred and the making sacred of the secular, this article argues that the moment...... of sacralisation is realised through co-production within a social setting when the object of sacralisation is recognised as such by others. In contemporary Iran, however, the moment of sacralising bodies by the state is also the moment of its own subversion as the political-theological field of martyrdom......-sacrifice became central to the mass mobilisation against the monarchy. Once the revolutionary government came into existence, this sacred tradition was regulated to create ‘martyrs’ as a fixed category, in order to consolidate the legacy of the revolution. In this political theatre, the dead body is a site...

  11. [Multifaceted body. I. The bodies of medicine].

    Science.gov (United States)

    Saraga, M; Bourquin, C; Wykretowicz, H; Stiefel, F

    2015-02-11

    The human body is the object upon which medicine is acting, but also lived reality, image, symbol, representation and the object of elaboration and theory. All these elements which constitute the body influence the way medicine is treating it. In this series of three articles, we address the human body from various perspectives: medical (1), phenomenological (2), psychosomatic and socio-anthropological (3). This first article discusses four distinct types of representation of the body within medicine, each related to a specific epistemology and shaping a distinct kind of clinical legitimacy: the body-object of anatomy, the body-machine of physiology, the cybernetic body of biology, the statistical body of epidemiology.

  12. Body Image and Body Contouring Procedures.

    Science.gov (United States)

    Sarwer, David B; Polonsky, Heather M

    2016-10-01

    Dissatisfaction with physical appearance and body image is a common psychological phenomena in Western society. Body image dissatisfaction is frequently reported by those who have excess body weight, but also is seen in those of normal body weight. For both groups of individuals, this dissatisfaction impacts self-esteem and quality of life. Furthermore, it is believed to be the motivational catalyst to a range of appearance-enhancing behaviors, including weight loss efforts and physical activity. Body image dissatisfaction is also believed to play a role in the decision to seek the wide range of body contouring procedures offered by aesthetic physicians. Individuals who seek these procedures typically report increased body image dissatisfaction, focus on the feature they wish to alter with treatment, and often experience improvement in body image following treatment. At the same time, extreme body image dissatisfaction is a symptom of a number of recognized psychiatric disorders. These include anorexia nervosa, bulimia nervosa, and body dysmorphic disorder (BDD), all of which can contraindicate aesthetic treatment. This special topic review paper provides an overview of the relationship between body image dissatisfaction and aesthetic procedures designed to improve body contouring. The review specifically focuses on the relationship of body image and body weight, as well as the presentation of body image psychopathology that would contraindicate aesthetic surgery. The overall goal of the paper is to highlight the clinical implications of the existing research and provide suggestions for future research on the psychological aspects of body contouring procedures. PMID:27634782

  13. Body Image and Body Contouring Procedures.

    Science.gov (United States)

    Sarwer, David B; Polonsky, Heather M

    2016-10-01

    Dissatisfaction with physical appearance and body image is a common psychological phenomena in Western society. Body image dissatisfaction is frequently reported by those who have excess body weight, but also is seen in those of normal body weight. For both groups of individuals, this dissatisfaction impacts self-esteem and quality of life. Furthermore, it is believed to be the motivational catalyst to a range of appearance-enhancing behaviors, including weight loss efforts and physical activity. Body image dissatisfaction is also believed to play a role in the decision to seek the wide range of body contouring procedures offered by aesthetic physicians. Individuals who seek these procedures typically report increased body image dissatisfaction, focus on the feature they wish to alter with treatment, and often experience improvement in body image following treatment. At the same time, extreme body image dissatisfaction is a symptom of a number of recognized psychiatric disorders. These include anorexia nervosa, bulimia nervosa, and body dysmorphic disorder (BDD), all of which can contraindicate aesthetic treatment. This special topic review paper provides an overview of the relationship between body image dissatisfaction and aesthetic procedures designed to improve body contouring. The review specifically focuses on the relationship of body image and body weight, as well as the presentation of body image psychopathology that would contraindicate aesthetic surgery. The overall goal of the paper is to highlight the clinical implications of the existing research and provide suggestions for future research on the psychological aspects of body contouring procedures.

  14. Dementia with Lewy Bodies

    Science.gov (United States)

    ... Awards Enhancing Diversity Find People About NINDS NINDS Dementia With Lewy Bodies Information Page Synonym(s): Lewy Body ... and Information Additional resources from MedlinePlus What is Dementia With Lewy Bodies? Dementia with Lewy bodies (DLB) ...

  15. [Multifaceted body. 2. The lived body].

    Science.gov (United States)

    Wykretowicz, H; Saraga, M; Bourquin, C; Stiefel, F

    2015-02-11

    The human body is the object upon which medicine is acting, but also lived reality, image, symbol, representation and the object of elaboration and theory. All these elements which constitute the body influence the way medicine is treating it. In this series of three articles, we address the human body from various perspectives: medical (1), phenomenological (2), psychosomatic and socio-anthropological (3). This second article distinguishes between the body as an object of knowledge or representation and the way the body is lived. This distinction which originates in phenomenological psychiatry aims to understand how the patient experiences his body and to surpass the classical somatic and psychiatric classifications. PMID:25895215

  16. [Multifaceted body. 2. The lived body].

    Science.gov (United States)

    Wykretowicz, H; Saraga, M; Bourquin, C; Stiefel, F

    2015-02-11

    The human body is the object upon which medicine is acting, but also lived reality, image, symbol, representation and the object of elaboration and theory. All these elements which constitute the body influence the way medicine is treating it. In this series of three articles, we address the human body from various perspectives: medical (1), phenomenological (2), psychosomatic and socio-anthropological (3). This second article distinguishes between the body as an object of knowledge or representation and the way the body is lived. This distinction which originates in phenomenological psychiatry aims to understand how the patient experiences his body and to surpass the classical somatic and psychiatric classifications.

  17. 大涡模拟研究钝体有旋流流场的拟序结构%Coherent Structures of Flow Fields in Swirling Flow Around a Bluff-body Using Large Eddy Simulation

    Institute of Scientific and Technical Information of China (English)

    张宏达; 张济民; 韩超; 叶桃红

    2014-01-01

    对带有中心钝体的分层旋流燃烧器的冷态流场进行了大涡模拟(LES),选取动态Smagorinsky涡黏模型作为亚格子模型,研究旋流数为o.45时旋流场的大尺度拟序结构.模拟结果表明:瞬时压强等值面显示的内外螺旋涡及进动涡核(PVC)均与平均速度场流线在空间上呈正交关系,表明两种涡结构均由剪切层Kelvin-Helmholtz不稳定性产生.Q准则等值面显示内外螺旋涡在下游20 mm左右开始发生破碎.PVC发源于环形旋流与环形射流剪切层附近的下游区域.瞬时周向速度的功率谱密度(PSD)出现明显的特征峰,表明PVC影响附近的流体,使之出现进动特征.采用本征正交分解(POD)重构湍流脉动速度场,不同模态下功率谱密度结果表明前两个模态的大尺度结构具有进动特征,使用前两个模态的周向脉动速度等值面显示了PVC周围流体的大尺度涡旋结构.

  18. RESEARCH ON COUPLING OF THE VORTEX-EXCITED RESONANCE AND GALLOPING OF THE BLUFF BODY WITH LARGE SLENDERNESS RATIO%大长细比钝体构件涡激共振与驰振的耦合研究

    Institute of Scientific and Technical Information of China (English)

    周帅; 张志田; 陈政清; 牛华伟

    2012-01-01

    当细长结构的驰振临界风速位于涡激共振风速锁定区间内或者接近时,存在涡激共振与驰振两种不同类型风振现象耦合的可能。该文对这两种振动耦合进行了理论推导并建立了相关的耦合振动预测模型;根据3个大长细比钝体构件的工程实例,通过数值模拟和风洞试验等手段获得的相关风振参数分别估算了两类振动的临界风速与锁定区间。由风洞试验测得的构件实际振动曲线与预测模型吻合良好,从而证实了一定条件下构件涡激共振和驰振存在耦合的可能,定性地说明了在两种不同振动机理下产生的气动负阻尼会相互叠加并共同抵消结构机械阻尼,使涡激共振幅值增大,驰振临界风速提前。%Vortex-induced resonance and galloping are two common types of wind-induced vibrations for the slender structures. When the critical wind speed of galloping falls in the lock-in range of vortex-induced resonance or just closely, these two different vibrations are prone to be coupled. The coupling of these two types of vibrations is theoretically analyzed, and prediction models are formulated accordingly. Based on the investigation of three engineering examples of slender structures, the critical wind speed of galloping and lock-in range of vortex-induced resonance are respectively evaluated with the aerodynamic parameters identified from both numerical simulation and wind tunnel test. The actual vibration curves obtained from wind tunnel test are quite consistent with those from the prediction models, which demonstrated the possibility of the coupling of vortex-induced oscillation and galloping under certain conditions. Moreover, it is found that the negative aerodynamic damping originated from the two different mechanisms is cooperated and can partly cancel the mechanical damping of a structure. As a consequence, the amplitude of vortex-induced resonance will be amplified, and the critical wind speed of galloping is reduced.

  19. [Multifaceted body. I. The bodies of medicine].

    Science.gov (United States)

    Saraga, M; Bourquin, C; Wykretowicz, H; Stiefel, F

    2015-02-11

    The human body is the object upon which medicine is acting, but also lived reality, image, symbol, representation and the object of elaboration and theory. All these elements which constitute the body influence the way medicine is treating it. In this series of three articles, we address the human body from various perspectives: medical (1), phenomenological (2), psychosomatic and socio-anthropological (3). This first article discusses four distinct types of representation of the body within medicine, each related to a specific epistemology and shaping a distinct kind of clinical legitimacy: the body-object of anatomy, the body-machine of physiology, the cybernetic body of biology, the statistical body of epidemiology. PMID:25895214

  20. 2-BODY AND 3-BODY PARQUET THEORY

    NARCIS (Netherlands)

    LANDE, A; SMITH, RA

    1992-01-01

    One of the fundamental approaches to microscopic many-body theory is through the use of perturbation theory. This paper presents a clear derivation of the equations that sum the two-body and three body reducible diagrams that are generated from some input set of irreducible diagrams (typically the b

  1. [Perspectives on body: embodiment and body image].

    Science.gov (United States)

    Chang, Shiow-Ru; Chao, Yu-Mei Yu

    2007-06-01

    "Body" is a basic concept of both the natural and human sciences. This extensive review of the literature explores the various philosophical approaches to the body, including empiricism, idealism, existentialism and phenomenology, as well as the relationship between body and mind. Embodiment and body image are the two main concepts of body addressed in this article. Merleau-Ponty's perspective on embodiment, an important new area of theory development, emphasizes that embodiment research must focus on life experiences, such as the study of body image. Using Schilder's framework of psychosocialology, this article provides a comprehensive understanding of the concept of body image and women's perspectives on the "body" in both Western culture and Eastern cultures. Body size and shape significantly influence the self-image of women. Body image is something that develops and changes throughout one's life span and is continually being constructed, destructed, and reconstructed. Personal body image has important psychological effects on the individual, especially women. This integrative review can make a significant contribution to knowledge in this area and, consequently, to related practice and research.

  2. Lewy Body Disease

    Science.gov (United States)

    Lewy body disease is one of the most common causes of dementia in the elderly. Dementia is the loss of mental ... to affect normal activities and relationships. Lewy body disease happens when abnormal structures, called Lewy bodies, build ...

  3. Body & Lifestyle Changes

    Science.gov (United States)

    ... Close X Home > Pregnancy > Body & lifestyle changes Body & lifestyle changes E-mail to a friend Please fill ... between pregnancies Nutrition, weight & fitness Prenatal care Body & lifestyle changes Is it safe? Labor & birth Postpartum care ...

  4. Inclusion Body Myositis

    Science.gov (United States)

    ... Awards Enhancing Diversity Find People About NINDS NINDS Inclusion Body Myositis Information Page Table of Contents (click ... and Information Additional resources from MedlinePlus What is Inclusion Body Myositis? Inclusion body myositis (IBM) is one ...

  5. Foreign body orbital cyst

    DEFF Research Database (Denmark)

    Yazdanfard, Younes; Heegard, Steffen; Fledelius, Hans C.;

    2001-01-01

    Ophthalmology, penetrating orbital injury, orbital foreign body, ultrasound, computed tomography (CT), histology......Ophthalmology, penetrating orbital injury, orbital foreign body, ultrasound, computed tomography (CT), histology...

  6. Body Matters: Narratives of the Body

    OpenAIRE

    Asandi, Iren; Filipovska, Kalina; Neault, Megan; Olsen, Sara Høier

    2014-01-01

    This project engages the notion of the subjective body in a pasture of social constructions in order to gather an understanding of the narratives created by women about their bodies in relation to cosmetic surgery. The empirical data for this project comes from our virtual ethnographic research on the various forums from the MyLooks website. Moreover, perspectives regarding the body, beauty ideals and theoretical positions from Kathryn Morgan and Kathy Davis fill out the structure of the proj...

  7. [Multifaceted body. 3. The contextualised body].

    Science.gov (United States)

    Bourquin, C; Wykretowicz, H; Saraga, M; Stiefel, F

    2015-02-11

    The human body is the object upon which medicine is acting, but also lived reality, image, symbol, representation and the object of elaboration and theory. All these elements which constitute the body influence the way medicine is treating it. In this series of three articles, we address the human body from various perspectives: medical (1), phenomenological (2), psychosomatic and socio-anthropological (3). This third and last article focuses on the psychosomatic and socio-anthropological facets of the body and their contribution to its understanding. PMID:25895216

  8. Determination of Star Bodies from -Centroid Bodies

    Indian Academy of Sciences (India)

    Lujun Guo; Gangsong Leng

    2013-11-01

    In this paper, we prove that an origin-symmetric star body is uniquely determined by its -centroid body. Furthermore, using spherical harmonics, we establish a result for non-symmetric star bodies. As an application, we show that there is a unique member of $_p\\langle K \\rangle$ characterized by having larger volume than any other member, for all real ≥ 1 that are not even natural numbers, where $_p\\langle K \\rangle$ denotes the -centroid equivalence class of the star body .

  9. [Multifaceted body. 3. The contextualised body].

    Science.gov (United States)

    Bourquin, C; Wykretowicz, H; Saraga, M; Stiefel, F

    2015-02-11

    The human body is the object upon which medicine is acting, but also lived reality, image, symbol, representation and the object of elaboration and theory. All these elements which constitute the body influence the way medicine is treating it. In this series of three articles, we address the human body from various perspectives: medical (1), phenomenological (2), psychosomatic and socio-anthropological (3). This third and last article focuses on the psychosomatic and socio-anthropological facets of the body and their contribution to its understanding.

  10. Media and Body Image

    Science.gov (United States)

    ... Management Education & Events Advocacy For Patients About ACOG Media and Body Image Home For Patients Search FAQs Media and Body ... and Body Image TFAQ002, June 2016 PDF Format Media and Body Image Especially For Teens How can the media make ...

  11. Adolescence and Body Image.

    Science.gov (United States)

    Weinshenker, Naomi

    2002-01-01

    Discusses body image among adolescents, explaining that today's adolescents are more prone to body image distortions and dissatisfaction than ever and examining the historical context; how self-image develops; normative discontent; body image distortions; body dysmorphic disorder (BDD); vulnerability of boys (muscle dysmorphia); who is at risk;…

  12. Reinforced Airfoil Shaped Body

    DEFF Research Database (Denmark)

    2011-01-01

    The present invention relates to an airfoil shaped body with a leading edge and a trailing edge extending along the longitudinal extension of the body and defining a profile chord, the airfoil shaped body comprising an airfoil shaped facing that forms the outer surface of the airfoil shaped body...

  13. General -Harmonic Blaschke Bodies

    Indian Academy of Sciences (India)

    Yibin Feng; Weidong Wang

    2014-02-01

    Lutwak introduced the harmonic Blaschke combination and the harmonic Blaschke body of a star body. Further, Feng and Wang introduced the concept of the -harmonic Blaschke body of a star body. In this paper, we define the notion of general -harmonic Blaschke bodies and establish some of its properties. In particular, we obtain the extreme values concerning the volume and the -dual geominimal surface area of this new notion.

  14. Body Image and Body Dysmorphic Concerns.

    Science.gov (United States)

    Tomas-Aragones, Lucia; Marron, Servando E

    2016-08-23

    Most people would like to change something about their bodies and the way that they look, but for some it becomes an obsession. A healthy skin plays an important role in a person's physical and mental wellbeing, whereas a disfiguring appearance is associated with body image concerns. Skin diseases such as acne, psoriasis and vitiligo produce cosmetic disfigurement and patients suffering these and other visible skin conditions have an increased risk of depression, anxiety, feelings of stigmatization and self-harm ideation. Body image affects our emotions, thoughts, and behaviours in everyday life, but, above all, it influences our relationships. Furthermore, it has the potential to influence our quality of life. Promotion of positive body image is highly recommended, as it is important in improving people's quality of life, physical health, and health-related behaviors. Dermatologists have a key role in identifying body image concerns and offering patients possible treatment options. PMID:27283435

  15. TRACE FOSSILS IN FLYSCH FACIES IN THE MIERS BLUFF FORMATION(LATE TRIASSIC), LIVINGSTON ISLAND, ANTARCTICA%南极利文斯顿岛晚三叠世复理石相遗迹化石

    Institute of Scientific and Technical Information of China (English)

    杨式溥; 邓希光; 郑祥身; 刘小汉

    2001-01-01

    南极利文斯顿岛赫德半岛中的迈尔斯陡崖组主要是浅变质的石英长石杂砂岩、粉砂岩、泥岩和粉砂岩 与泥岩互层等组成的复理石,厚度可能超过3 000 m,形成于浊积扇的上扇和下扇部分,时代可能为晚三叠世。在 复理石相岩石中发育一套深水的遗迹化石,共有15个遗迹属、16个遗迹种,其中有10个可以鉴定到遗迹种、两个 比较种,4个只鉴定到遗迹属,未鉴定到遗迹种;建立1个新遗迹属及新遗迹种,除新遗迹属种外,其余14个遗迹 属,15个遗迹种都曾经在深海复理石相浊积岩内发现过,其中 Belorhaphe, Glockerichnus, Lophoctenium, Rhabdo glyphus, Paleodictyon , Sublorenzinia , Spirophycus , Strobilorhaphe, Tuberculichnus , Cochlichnus 等,属于浊流前产 生在复理石相泥岩内的高度分异的雕画迹(Graphoglyptida),它们产于泥岩却保存为上覆砂岩底面的铸型凸起。另 外Fucusopsis和Neonereites却产生在砂岩内代表浊流后形成的沉积后遗迹组合。文内还描述3种浊流常见的无机 构造,并与上述遗迹化石进行比较。%The Miers Bluff Formation on Hurd Peninsula, Liv ingston Island, West Antarctica, contains low-grade metamorphic grey-wacke, arkose sandstone, shales, con glomerate, pebbly mudstone and breccias and has been in terpreted to be a sequence of turbidites. It may represent sedimentation of upper and lower mid-fan settings. Its thick is more than 3 000 meters (base unknown). Its de positional age has been palynologically dated as Late Trias sic (Ouyang et al., 2000). Many trace fossils of the whole succession were found in the turbidites of the Miers Bluff Formation. All these are deep sea ichnofossils. Fif teen ichnogenus and sixteen ichnospecies are recongnized. They are Belorhaphe ichnosp., Cochlichnus ichonosp. , Fucusopsis annulata Palibin, Glockerichnus ichnosp., Halyminidium sublumbricoides ( Azpeitia ), Lophocteni um comosum Richter

  16. Active flow control for reduction of fluctuating aerodynamic forces of a blunt trailing edge profiled body

    Energy Technology Data Exchange (ETDEWEB)

    Naghib-Lahouti, Arash, E-mail: anaghibl@uwo.c [Boundary Layer Wind Tunnel Laboratory, University of Western Ontario, London, Ontario, N6A 5B9 (Canada); Hangan, Horia [Boundary Layer Wind Tunnel Laboratory, University of Western Ontario, London, Ontario, N6A 5B9 (Canada)

    2010-12-15

    Vortex shedding in the wake of two-dimensional bluff bodies is usually accompanied by three dimensional instabilities. These instabilities result in streamwise and vertical vorticity components which occur at a certain spanwise wavelength. The spanwise wavelength of the instabilities ({lambda}{sub Z}) depends on several parameters, including profile geometry and Reynolds number. The objective of the present work is to study the three dimensional wake instabilities for a blunt trailing edge profiled body, comprised of an elliptical leading edge and a rectangular trailing edge, and to manipulate these instabilities to control the aerodynamic forces. Results of numerical simulations of flow around the body at Re(d) = 400, 600, and 1000, as well as planar Laser Induced Fluorescence (LIF) flow visualizations at Re(d) = 600 and 1000 are analyzed to determine the wake vorticity structure and {lambda}{sub Z}. Based on the findings of these analyses, an active flow control mechanism for attenuation of the fluctuating aerodynamic forces on the body is proposed. The flow control mechanism is comprised of a series of trailing edge injection ports distributed across the span, with a spacing equal to {lambda}{sub Z}. Injection of a secondary flow leads to amplification of the three dimensional instabilities and disorganization of the von Karman vortex street. Numerical simulations indicate that the flow control mechanism can attenuate the fluctuating aerodynamic forces at lower Reynolds numbers (Re(d) = 400 and 600) where {lambda}{sub Z} is constant in time. However, the control mechanism loses its effectiveness at Re(d) = 1000, due to the temporal variations of {lambda}{sub Z}.

  17. Abstract: Body Work

    DEFF Research Database (Denmark)

    Otto, Lene

    2012-01-01

    . The British sociologist Julia Twigg has introduced and explored the term `bodywork', most recently in Body Work in Health and Social Care - Critical Themes, New Agendas (2011). She extends the term body work from applying to the work that individuals undertake on their own bodies, often as part of regimens......This panel will explore the usefulness of the term ‘body work’ in cultural history. Body work is understood as work focusing on the bodies of others as component in a range of occupations in health and social care, as well as in unpaid work in the family. How can the notion of body work inform...... cultural history of health and illness whether through a micro-social focus on the intercorporeal aspects of work in health and social care, or through clarifying our understanding of the times and spaces of work, or through highlighting the relationship between mundane body work and global processes...

  18. Lewy Body Dementia Diagnosis

    Science.gov (United States)

    ... Diagnosis Symptoms Treatment Options Help end Lewy body dementia now! Donate Diagnosis An experienced clinician within the ... an experienced diagnostic team skilled in Lewy body dementia. A thorough dementia diagnostic evaluation includes physical and ...

  19. Lewy Body Dementia Research

    Science.gov (United States)

    ... Research Abstracts Clinical Trials Help end Lewy body dementia now! Donate Research Links Treating Psychosis in Parkinson’s ... The use of antipsychotic medications in Lewy body dementias is a known challenge. Are the medications helpful ...

  20. About Body Water

    Science.gov (United States)

    ... Insulin Delivery Additional Content Medical News About Body Water By James L. Lewis, III, MD NOTE: This ... Version. DOCTORS: Click here for the Professional Version Water Balance About Body Water Dehydration Overhydration Water accounts ...

  1. Body mass index

    Science.gov (United States)

    ... page: //medlineplus.gov/ency/article/007196.htm Body mass index To use the sharing features on this ... your height is to figure out your body mass index (BMI). You and your health care provider ...

  2. Zooplankton body composition

    DEFF Research Database (Denmark)

    Kiørboe, Thomas

    2013-01-01

    I compiled literature on zooplankton body composition, from protozoans to gelatinous plankton, and report allometric relations and average body composition. Zooplankton segregate into gelatinous and non-gelatinous forms, with few intermediate taxa (chaetognaths, polychaetes, and pteropods). In most...... groups body composition is size independent. Exceptions are protozoans, chaetognaths, and pteropods, where larger individuals become increasingly watery. I speculate about the dichotomy in body composition and argue that differences in feeding mechanisms and predator avoidance strategies favor either a...

  3. Michel Foucault's bodies

    OpenAIRE

    Potte-Bonneville, Mathieu

    2012-01-01

    How is it possible for Foucault to present the body at the same time as the foundation and the result of history, as condition and horizon of the theory that takes hold of it ? One has to pay attention to the various registers in which Foucault distributes the acceptations ordinarily confused with the general notion of the body : from "my body" (as it appears in Merleau-Ponty's phenomenology) to "the body' (as it is understood by modern medicine) ; from this body as an object for positive exp...

  4. Written on the Body

    DEFF Research Database (Denmark)

    Christiansen, Steen Ledet

    may choose to alter how we are perceived and to at least some extent control the discontent we may project onto our own body. Through body modification, we can alter the impression of our personality and express a cultural solidarity, as Chris Rojek points out. Tattoos, piercings and other body...... as a semiotic strategy to negotiate and navigate cultural borders. Suicidegirls.com is a website which is both an online community, but also a softcore pin-up site, where the models feature extensive body modifications in the form of tattoos and piercings. The website promotes a democratic approach to the photo...... Butler's account of subversive bodily acts, the pin-up shoots of the Suicide Girls mount a critique of a culture's view of the body as a natural entity. Cultural borders are crossed, as the bodies of the Suicide Girls embed ink into their bodies in the form of tattoos, and gender is played...

  5. Nucleation of nuclear bodies.

    Science.gov (United States)

    Dundr, Miroslav

    2013-01-01

    The nucleus is a complex organelle containing numerous highly dynamic, structurally stable domains and bodies, harboring functions that have only begun to be defined. However, the molecular mechanisms for their formation are still poorly understood. Recently it has been shown that a nuclear body can form de novo by self-organization. But little is known regarding what triggers the formation of a nuclear body and how subsequent assembly steps are orchestrated. Nuclear bodies are frequently associated with specific active gene loci that directly contribute to their formation. Both coding and noncoding RNAs can initiate the assembly of nuclear bodies with which they are physiologically associated. Thus, the formation of nuclear bodies occurs via recruitment and consequent accumulation of resident proteins in the nuclear bodies by nucleating RNA acting as a seeder. In this chapter I describe how to set up an experimental cell system to probe de novo biogenesis of a nuclear body by nucleating RNA and nuclear body components tethered on chromatin. PMID:23980018

  6. The Mallory body

    DEFF Research Database (Denmark)

    Jensen, K; Gluud, C

    1994-01-01

    To aid understanding of markers of disease and predictors of outcome in alcohol-exposed systems, we undertook a literature survey of more than 700 articles to view the morphological characteristics and the clinical and experimental epidemiology of the Mallory body. Mallory bodies are filaments...... suggest a hit-and-run effect of alcohol, whereas other chronic liver diseases show evidence of gradual increase in prevalence of Mallory bodies with severity of hepatic pathology. Mallory bodies in cirrhosis do not imply alcoholic pathogenesis. Obesity, however, is associated with alcoholism and diabetes...

  7. Body-Worn Antennas for Body-Centric Wireless Communications

    DEFF Research Database (Denmark)

    Kammersgaard, Nikolaj Peter Iversen; Kvist, Søren H.; Ôzden, Sinasi ̈;

    2014-01-01

    Ear-to-ear (E2E) on-body propagation and on-body antennas for body-centric wireless communications are presented.......Ear-to-ear (E2E) on-body propagation and on-body antennas for body-centric wireless communications are presented....

  8. Teaching Bodies in Place

    Science.gov (United States)

    Jones, Stephanie; Woglom, James F.

    2013-01-01

    Background/Context: This piece draws on literature in justice-oriented teacher education, feminist pedagogy, and postmodern notions of bodies and place to make sense of data generated from a three-year study of an undergraduate teacher education course. A feminist lens was used to engage a body- and place-focused pedagogy that aimed to engage…

  9. Body Basics Library

    Science.gov (United States)

    ... a Friend Who Cuts? About the Body Basics Library KidsHealth > For Teens > About the Body Basics Library Print A A A Text Size Did you ... system, part, and process works. Use this medical library to find out about basic human anatomy, how ...

  10. Healthy Mouth, Healthy Body

    Science.gov (United States)

    FOR THE DENTAL PATIENT ... Healthy mouth, healthy body T he mouth is a window into the health of the body. It can show signs of nutri- tional ... Sjögren’s syndrome—may first become apparent because of mouth lesions or other oral problems. The mouth is ...

  11. Our Bodies Are Changing

    Institute of Scientific and Technical Information of China (English)

    程国清

    2004-01-01

    Have you ever thought about your body changes?Up to about the age of eight or nine,girls and boys look quite alike.They have similar shaped bodies(形体相似)and their voices sound almost the same.As they grow, all their organs(器官)grow,too.

  12. The Body Bites Back!

    Science.gov (United States)

    Alsop, Steve

    2011-01-01

    How should we think about the body in science education? What ought it mean to be alive and live within epistemologies and pedagogies? What does it mean to be human in science education? In response to Auli Arvola Orlander and Per-Olof Wickram's article, this essay explores some of the possibilities and questions that the body evokes in science…

  13. Body-building

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    正In recent years, more and more people spare no pains to join in the body-building group. People begin to take part in various fitness clubs or fitness centers in their spare time. This shows body-building has become an indispensable part of many people’s life.

  14. Bodies and Voices

    DEFF Research Database (Denmark)

    A wide-ranging collection of essays centred on readings of the body in contemporary literary and socio-anthropological discourse, from slavery and rape to female genital mutilation, from clothing, ocular pornography, voice, deformation and transmutation to the imprisoned, dismembered, remembered......, abducted or ghostly body, in Africa, Australasia and the Pacific, Canada, the Caribbean, Great Britain and Eire...

  15. Monitoring the normal body

    DEFF Research Database (Denmark)

    Nissen, Nina Konstantin; Holm, Lotte; Baarts, Charlotte

    2015-01-01

    of practices for monitoring their bodies based on different kinds of calculations of weight and body size, observations of body shape, and measurements of bodily firmness. Biometric measurements are familiar to them as are health authorities' recommendations. Despite not belonging to an extreme BMI category......, they translate such measurements and recommendations in meaningful ways to fit their everyday life. Conclusions : Normal-weight and moderately overweight people are concerned with their body size and continuously monitor it. Future health promotion work should consider the kind of practices already established...... provides us with knowledge about how to prevent future overweight or obesity. This paper investigates body size ideals and monitoring practices among normal-weight and moderately overweight people. Methods : The study is based on in-depth interviews combined with observations. 24 participants were...

  16. The Semiotic Body

    DEFF Research Database (Denmark)

    Hoffmeyer, Jesper

    2008-01-01

    Most bodies in this world do not have brains and the minority of animal species that do have brained bodies are descendents from species with more distributed or decentralized nervous systems. Thus, bodies were here first, and only relatively late in evolution did the bodies of a few species grow...... of these seemingly ‘unnatural’ mental and even linguistic kinds of species. It is shown how the skin, on the one hand, makes us belong in the world, and on the other hand, is part of the huge landscape of membranes across which the semiotic self incessantly must be reconstituted. The discussion moves...... on to the intracellular world of signal transduction through which the activity of single cells are put to service for bodily needs. The paper further considers the mechanisms behind homeostasis and the semiotics of the psycho-neuro-endocrine integration in the body. The concept of semiotic emergence is introduced...

  17. Pseudotumor of Ciliary Body

    Directory of Open Access Journals (Sweden)

    Mary Varghese

    2014-01-01

    Full Text Available Orbital pseudotumor is a benign disease involving the orbital structures. Pseudotumor of the ciliary body is rare. We present a case of a 27-year-old male who presented with gradual visual loss, pain, and redness in his left eye. On examination he was found to have a yellowish white mass at the periphery of anterior chamber in his left eye and ultrasound biomicroscopy (UBM revealed a ciliary body mass in the same eye. He was treated with systemic steroids, which was tapered over a period of 8 weeks. His symptoms improved and the ciliary body mass disappeared with no recurrence over the next 6 months. UBM is an important diagnostic tool for diagnosing ciliary body mass. Early diagnosis and prompt treatment with systemic steroids may help resolve pseudotumor of the ciliary body.

  18. High-order large-eddy simulation of flow over the ``Ahmed body'' car model

    Science.gov (United States)

    Minguez, M.; Pasquetti, R.; Serre, E.

    2008-09-01

    The structure of the turbulent flow over a simplified automotive model, the Ahmed body (S. R. Ahmed and G. Ramm, SAE Paper No. 8403001, 1984) with a 25° slanted back face, is investigated using high-order large-eddy simulations (LESs) at Reynolds number Re =768000. The numerical approach is carried out with a multidomain spectral Chebyshev-Fourier solver and the bluff body is modeled with a pseudopenalization method. The LES capability is implemented thanks to a spectral vanishing viscosity (SVV) technique, with particular attention to the near wall region. Such a SVV-LES approach is extended for the first time to an industrial three-dimensional turbulent flow over a complex geometry. In order to better understand the interactions between flow separations and the dynamic behavior of the released vortex wake, a detailed analysis of the flow structures is provided. The topology of the flow is well captured showing a partial separation of the boundary layer over the slanted face and the occurrence of two strong contrarotating trailing vortices expanding farther in the wake. The interactions of these large vortices with smaller structures reminiscent of horseshoe vortices, within the shear layer over the slanted face, form large helical structures providing strong unsteady phenomena in the wake. Mean velocity fields and turbulence statistics show a global agreement with the reference experiments of Lienhart et al. (DGLR Fach Symposium der AG SRAB, Stuttgart University, 15-17 November 2000). In order to provide a deeper insight into the nature of turbulence, the flow is analyzed using power spectra and the invariant theory of turbulence of Lumley [Adv. Appl. Mech. 18, 123 (1978)].

  19. The body as art.

    Science.gov (United States)

    Barker, D J; Barker, M J

    2002-07-01

    For millennia people have altered the appearance of their bodies with cosmetics, jewellery, tattoos, piercings, and other surgical procedures. It would appear that they wish to conform to a perceived 'ideal body', although the actual appearance of such a body is subject to temporal, cultural and geographical change. In contemporary society the media are largely responsible for providing the yardsticks against which individual body shape is measured. Today the desired form is generally young, slim, tanned and blemish-free. Sadly, dissatisfaction with body image can be the source of great unhappiness and may even lead to suicide. Interested scholars have debated the meaning of beauty for centuries but it seems that every human society has its own standards. At the simplest it would appear that youth and symmetry are the most highly prized ingredients. There is no doubt that those who fit the conventional standards of attractiveness are treated better by society. Individuals have an inalienable right to their own body appearance, and to alter it as they see fit, however such modifications may not always be in their own best interests. Practitioners of cosmetic procedures must be alert to clients with histories of weight fluctuation, unrealistic body image, or low self-esteem. Psychological disorders may present with dysmorphophobic symptoms. Doctors providing cosmetic services need to be adept at diagnosing psychological illness. PMID:17147524

  20. Materiality, Practice and Body

    DEFF Research Database (Denmark)

    Johansen, Stine Liv; Skovbjerg-Karoff, Helle

    2009-01-01

    In order to understand the interaction between human and technology, the relationship must be emphasized as a triangulation between materiality, body and practice. By introducing play situations from a just finished empirical study in three bigger cities in Denmark, this paper will address...... the interplay from the human‟s point of view, as a body doing a certain practice, which is constantly produced by taking approaches which comes from phenomenology and practice theory. We introduce aspects of play understood as a dynamic between materiality, body and practice with the goal of inspiring not only...

  1. Body Dysmorphic Disorder

    Directory of Open Access Journals (Sweden)

    Perihan Cam Ray

    2012-12-01

    Full Text Available Body dysmorphic disorder is a type of mental illness, wherein the affected person is concerned with body image, manifested as excessive concern about and preoccupation with a perceived defect of their physical features. Although it is a common disease and has been defined in the literature over a century, it is not a well known disease. Chronic, treatment resistant and sometimes delusional nature could result in severe functional impairment. The diagnosis and appropriate therapy of disorder are crucial because of increased suicidality and reduction in life quality. In this article the symptoms, etiology, clinical features and treatment of body dysmorphic disorder are briefly reviewed.

  2. Adolescence and body image.

    Science.gov (United States)

    Weinshenker, Naomi

    2002-05-01

    Concerns about body image range from a normal desire to look attractive to a pathological concern with thinness or physical perfection. Today, more than ever, adolescents in America are prone to body image distortions and dissatisfaction. The reasons for this are multi-determined and include the influence of the media and cultural expectations, as well as a discrepancy between an adolescent's own physical characteristics and the expectations of his or her social environment. Adolescents with severe body image distortions are vulnerable to developing serious psychiatric disorders that can have life-threatening consequences. Schools can help by providing guidance and information in a time of uncertainty. PMID:12046161

  3. Cortical Lewy Body Dementia

    Directory of Open Access Journals (Sweden)

    W. R. G. Gibb

    1990-01-01

    Full Text Available In cortical Lewy body dementia the distribution of Lewy bodies in the nervous system follows that of Parkinson's disease, except for their greater profusion in the cerebral cortex. The cortical tangles and plaques of Alzheimer pathology are often present, the likely explanation being that Alzheimer pathology provokes dementia in many patients. Pure cortical Lewy body dementia without Alzheimer pathology is uncommon. The age of onset reflects that of Parkinson's disease, and clinical features, though not diagnostic, include aphasias, apraxias, agnosias, paranoid delusions and visual hallucinations. Parkinsonism may present before or after the dementia, and survival duration is approximately half that seen in Parkinson's disease without dementia.

  4. Markets, Bodies, Rhythms

    DEFF Research Database (Denmark)

    Borch, Christian; Bondo Hansen, Kristian; Lange, Ann-Christina

    2015-01-01

    This article explores the relationship between bodily rhythms and market rhythms in two distinctly different financial market configurations, namely the open-outcry pit (prevalent especially in the early 20th century) and present-day high-frequency trading. Drawing on Henri Lefebvre...... irrelevant. Yet high-frequency trading does change the role of the body rather than seeking to attune their bodies to the markets, high-frequency traders seek to calibrate their bodies to their algorithms. While the article demonstrates the usefulness of deploying Lefebvre's rhythmanalysis in analyses...... of financial markets, it also suggests that high-frequency trading in particular might produce new types of market rhythms that, contra Lefebvre, do not revolve around traders' bodies....

  5. Post Newtonian Rigid Body

    CERN Document Server

    Xu, C; Wu, X; Wu, Xuejun

    2004-01-01

    In this paper, it is the first time to construct a complete post-Newtonian (PN) model of a rigid body by means of a new constraint on the mass current density and mass density. In our PN rigid body model most of relations, such as spin vector proportional to the angular velocity, the definition on the moment of inertia tensor, the key relation between the mass quadrupole moment and the moment of inertia tensor, rigid rotating formulae of mass quadrupole moment and the moment of inertia tensor, are just the extension of the main relations in Newtonian rigid body model. When all of $1/c^2$ terms are neglected, the PN rigid body model and the corresponding formulae reduce to Newtonian version. The key relation is obtained in this paper for the first time, which might be very useful in the future application to problems in geodynamics and astronomy.

  6. Investigating body function

    International Nuclear Information System (INIS)

    This invention relates to the investigation of body function, especially small bowel function but also liver function, using bile acids and bile salts or their metabolic precursors labelled with radio isotopes and selenium or tellurium. (author)

  7. Unusual orbital foreign bodies

    Directory of Open Access Journals (Sweden)

    Agarwal P

    1993-01-01

    Full Text Available Retained intraorbital organic foreign bodies, particularly wooden, are commonly encountered in ophthalmologic practice. We treated two children who had sustained such injury while playing. They presented to us with non-healing sinus with purulent discharge. In one of the patients, X-rays and CT scan helped to clinch the diagnosis, whereas in the other patient diagnosis was possible by correlating history with clinical findings. Surgical exploration in both patients helped us to remove the foreign bodies. Surprisingly, both the foreign bodies were 7 cm long wooden pieces. We, however, caution that management of such cases should be conservative and that surgical exploration be done only in case of complication. From our experience, we recommend proper localisation by all possible means, blunt dissection, careful haemostasis coupled with excellent lighting and exposure in the atraumatic removal of intraorbital foreign bodies.

  8. [Towards the bionic body].

    Science.gov (United States)

    Andrieu, Bernard

    2011-06-01

    Global technological progress is enabling people to see their mutilated bodies assisted by sophisticated prostheses. Multi-disciplinary and associative care help patients relearn daily living activities and accomplish various exploits.

  9. Giant peritoneal loose bodies

    Directory of Open Access Journals (Sweden)

    Chris van Zyl

    2015-03-01

    Full Text Available Giant peritoneal loose bodies are rare lesions, originating from auto-amputated appendices epiploicae. They may cause urinary or gastrointestinal obstruction and, should the radiologist not be familiar with the entity, can potentially be confused with malignant or parasitic lesions.Familiarity with their characteristic computed tomographic features is essential to prevent unnecessary surgery in the asymptomatic patient. We present a case of a 70-year-old man diagnosed with two giant peritoneal loose bodies.

  10. Body Dysmorphic Disorder

    OpenAIRE

    Ray, Perihan Çam; Demirkol, Mehmet Emin; Tamam, Lut

    2012-01-01

    Body dysmorphic disorder is a type of mental illness, wherein the affected person is concerned with body image, manifested as excessive concern about and preoccupation with a perceived defect of their physical features. Although it is a common disease and has been defined in the literature over a century, it is not a well known disease. Chronic, treatment resistant and sometimes delusional nature could result in severe functional impairment. The diagnosis and appropriate therapy of disorder a...

  11. Body dysmorphic disorder

    OpenAIRE

    Veale, D

    2004-01-01

    Body dysmorphic disorder (BDD) is defined as a preoccupation with an "imagined" defect in one's appearance. Alternatively, where there is a slight physical anomaly, then the person's concern is markedly excessive. The preoccupation is associated with many time consuming rituals such as mirror gazing or constant comparing. BDD patients have a distorted body image, which may be associated with bullying or abuse during childhood or adolescence. Such patients have a poor quality of life, are soci...

  12. [Colorectal foreign bodies].

    Science.gov (United States)

    Thim, Troels; Laurberg, Søren

    2006-09-25

    A patient with a retained anally introduced colorectal foreign body or complications hereof needs appropriate treatment. The patient may be in danger and is certainly in discomfort. The problem is relatively rare; however, its incidence may be expected to increase. Guidelines for handling of the situation are lacking in many textbooks. Here, a suggestion for handling of a patient with a retained colorectal foreign body or complications hereof is presented. PMID:17032594

  13. Multichannel Human Body Communication

    Science.gov (United States)

    Przystup, Piotr; Bujnowski, Adam; Wtorek, Jerzy

    2016-01-01

    Human Body Communication is an attractive alternative for traditional wireless communication (Bluetooth, ZigBee) in case of Body Sensor Networks. Low power, high data rates and data security makes it ideal solution for medical applications. In this paper, signal attenuation for different frequencies, using FR4 electrodes, has been investigated. Performance of single and multichannel transmission with frequency modulation of analog signal has been tested. Experiment results show that HBC is a feasible solution for transmitting data between BSN nodes.

  14. Hacking the body

    OpenAIRE

    Baker, C

    2013-01-01

    This conference paper is available to download from the publisher’s website at the link below. Hacking the Body is a proposed collaborative re-search project that explores the use of the concept of 'hacking' to repurpose and re-imagine internal signals from the body through DIY biosensors and soft circuits. This paper outlines definitions of hacking and how these apply to workshops exploring how to create these sensors.

  15. Bursting bodies of water

    DEFF Research Database (Denmark)

    Rasmussen, Mattias Borg

    2014-01-01

    A silent threat is growing below receding glaciers: lakes are formed as the tongues of the glaciers draw back up the mountain, and huge and growing bodies of water beneath them are contained only be weak moraine walls.......A silent threat is growing below receding glaciers: lakes are formed as the tongues of the glaciers draw back up the mountain, and huge and growing bodies of water beneath them are contained only be weak moraine walls....

  16. Esophageal Foreign Bodies

    Directory of Open Access Journals (Sweden)

    Ufuk Cobanoglu

    2014-04-01

    Full Text Available Esophageal foreign body aspiration is a common event which can cause serious morbidity and mortality in the children and adult population. For that reason, early diagnosis and treatment are crucial for preventing these life threateining complications. Children most often ingest coins and toys whereas adults commonly tend to have problems with meat and bones. Esophageal foreign bodies are located at the cricopharyngeus muscle level in 70%, the thoracic esophagus in 15% and the gastroesophageal junction in the remaining 15%. Symptoms can vary according to the shape and structure of the ingested object, type of location, patient%u2019s age and complications caused by the foreign body. Delay in treatment, esophageal perforation and an underlying esophageal disease are poor prognostic factors. In treatment, observation, foley catheter, rigid or flexible esophagoscopy and removing the foreign body with a Magill forceps, pushing the foreign body into the stomach, giving intravenous glucagon and surgical treatment methods can be used. Rigid esophagoscopy is an effective and safe procedure for foreign body diagnosis and removal. Improved endoscopic experience and clinical management of thoracic surgeons led to reduced morbidity and mortality in recent years. Most of those emergencies of childhood are preventable. Family education is very important.

  17. The neural basis of body form and body action agnosia.

    Science.gov (United States)

    Moro, Valentina; Urgesi, Cosimo; Pernigo, Simone; Lanteri, Paola; Pazzaglia, Mariella; Aglioti, Salvatore Maria

    2008-10-23

    Visual analysis of faces and nonfacial body stimuli brings about neural activity in different cortical areas. Moreover, processing body form and body action relies on distinct neural substrates. Although brain lesion studies show specific face processing deficits, neuropsychological evidence for defective recognition of nonfacial body parts is lacking. By combining psychophysics studies with lesion-mapping techniques, we found that lesions of ventromedial, occipitotemporal areas induce face and body recognition deficits while lesions involving extrastriate body area seem causatively associated with impaired recognition of body but not of face and object stimuli. We also found that body form and body action recognition deficits can be double dissociated and are causatively associated with lesions to extrastriate body area and ventral premotor cortex, respectively. Our study reports two category-specific visual deficits, called body form and body action agnosia, and highlights their neural underpinnings.

  18. Retained, incarcerated oropharyngeal foreign bodies

    OpenAIRE

    Sonkhya, Nishi; Luckwani, Ashok; Mishra, Prakash; Yadav, Ramesh

    2006-01-01

    Foreign body ingestion is a well documented entity. Incarcerated oropharyngel foreign bodies are fre quently observed. Care should be taken for the symptoms like dysphagia and odynophagia, even if no positive history for foreign body ingestion is present. Two cases of incarcerated oropharyngeal foreign bodies are presented here who did not report with history of foreign body ingestion.

  19. Managing Regulatory Body Competence

    International Nuclear Information System (INIS)

    In 2001, the IAEA published TECDOC 1254, which examined the way in which the recognized functions of a regulatory body for nuclear facilities results in competence needs. Using the systematic approach to training (SAT), TECDOC 1254 provided a framework for regulatory bodies for managing training and developing and their maintaining their competence. It has been successfully used by many regulators. The IAEA has also introduced a methodology and an assessment tool - Guidelines for Systematic Assessment of Regulatory Competence Needs (SARCoN) - which provides practical guidance on analysing the training and development needs of a regulatory body and, through a gap analysis, guidance on establishing competence needs and how to meet them. In 2009, the IAEA established a steering committee (supported by a bureau) with the mission to advise the IAEA on how it could best assist Member States to develop suitable competence management systems for their regulatory bodies. The committee recommended the development of a safety report on managing staff competence as an integral part of a regulatory body's management system. This Safety Report was developed in response to this request. It supersedes TECDOC 1254, broadens its application to regulatory bodies for all facilities and activities, and builds upon the experience gained through the application of TECDOC 1254 and SARCoN and the feedback received from Member States. This Safety Report applies to the management of adequate competence as needs change, and as such is equally applicable to the needs of States 'embarking' on a nuclear power programme. It also deals with the special case of building up the competence of regulatory bodies as part of the overall process of establishing an 'embarking' State's regulatory system

  20. Body Building on Diamonds

    Institute of Scientific and Technical Information of China (English)

    Andrei P. Sommer; Dan Zhu; Tim Scharnweber; Hans-Joerg Fecht

    2009-01-01

    Whereas conservative therapies aim to stall the advance of disease, regenerative medicine strives to reverse it. The capacity of most tissues to regenerate derives from stem cells, but there are a number of barriers which have to be circumvented before it will be possible to use stem-cell-based therapies. Such therapies, however, are expected to improve human health enormously,and knowledge gained from studying stem cells in culture and in model organisms is now laying the groundwork for a new era of regenerative medicine. One of the most prominent methods to study stem cell differentiation is to let them to form embryoid bodies. Under favourable conditions any stem cell line will form embryoid bodies. However, the mechanism of the formation of embryoid bodies is not very well understood, and to produce them in the laboratory is in no way trivial - an important technical barrier in stem cell research. Recently, the embryoid body cultivation step has been successfully circumvented for the derivation of osteogenic cultures of embryonic stem cells. Here we report on a simple and reusable system to cultivate embryoid bodies in extremely short times. The method is inspired by the principles that lead to the establishment of the biomimetic triangle.

  1. Symptoms of Lewy Body Dementia

    Science.gov (United States)

    ... Lewy body dementia now! Donate Symptoms Lewy body dementia symptoms and diagnostic criteria Every person with LBD ... an umbrella term for two related clinical diagnoses, dementia with Lewy bodies and Parkinson's disease dementia. The ...

  2. 'Bad boys'' Bodies

    DEFF Research Database (Denmark)

    Skårderud, Finn; Nygren, Pär; Edlund, Birgitta

    2005-01-01

    Children residing in care (hereafter referred to as childcare residents) are a risk¬group for emotional disturbances and behaviour problems. Based on existing knowledge of risk factors one would also expect this population to be a high-risk group for eating disorders and related body-image...... resident group; few differences between girls in the two samples; and a high frequency of having used anabolic?androgenic steroids among boys in care. Body-image problems among boys have hitherto been given little attention. The results call for increased efforts in describing and detecting patho...... disorders. The objective of this study was to describe pathological eating behaviour, dysfunctional body focusing and psychological symptoms in a sample of childcare residents compared with a non-clinical sample. Sixty-one childcare residents (aged 14?21 years, mean 16.2) and a non-clinical comparison group...

  3. Culture and body image

    Directory of Open Access Journals (Sweden)

    D. Alves

    2009-01-01

    Full Text Available The present study aims to investigate the relationship between culture and body image. We intend to know how socio-cultural factors influence the levels of satisfaction with body image. The emphasis is given to the cultural values as represented by the sociocultural norms of societies such as the United States of America and Europe. It is argued that through the media, the values of these industrialized societies are dissipated throughout the world provoking cultural changes and uniformization of behavioural standards. From the literature review, it is possible to conclude that body dissatisfaction is a reality to both sexes and a direct result of the non-conformity to cultural-esthetical patterns promoted by the profit-oriented societies.

  4. Body integrity identity disorder.

    Directory of Open Access Journals (Sweden)

    Rianne M Blom

    Full Text Available INTRODUCTION: Body Integrity Identity Disorder (BIID is a rare, infrequently studied and highly secretive condition in which there is a mismatch between the mental body image and the physical body. Subjects suffering from BIID have an intense desire to amputate a major limb or severe the spinal cord in order to become paralyzed. Aim of the study is to broaden the knowledge of BIID amongst medical professionals, by describing all who deal with BIID. METHODS: Somatic, psychiatric and BIID characteristic data were collected from 54 BIID individuals using a detailed questionnaire. Subsequently, data of different subtypes of BIID (i.e. wish for amputation or paralyzation were evaluated. Finally, disruption in work, social and family life due to BIID in subjects with and without amputation were compared. RESULTS: Based on the subjects' reports we found that BIID has an onset in early childhood. The main rationale given for their desire for body modification is to feel complete or to feel satisfied inside. Somatic and severe psychiatric co-morbidity is unusual, but depressive symptoms and mood disorders can be present, possibly secondary to the enormous distress BIID puts upon a person. Amputation and paralyzation variant do not differ in any clinical variable. Surgery is found helpful in all subjects who underwent amputation and those subjects score significantly lower on a disability scale than BIID subjects without body modification. CONCLUSIONS: The amputation variant and paralyzation variant of BIID are to be considered as one of the same condition. Amputation of the healthy body part appears to result in remission of BIID and an impressive improvement of quality of life. Knowledge of and respect for the desires of BIID individuals are the first steps in providing care and may decrease the huge burden they experience.

  5. Listening to the body?

    DEFF Research Database (Denmark)

    Ravn, Susanne; Christensen, Mette Krogh

    2013-01-01

    Based on a single case study of a Danish elite golfer, this article focuses on describing the different ways in which the golfer experiences the physicality of her body during training. The aim of the article is to explore how phenomenological insights concerning self-consciousness can be used...... suggest that the golfer’s experience of the physicality of her body can be considered in relation to three possible dimensions of self-consciousness: a pre-reflective subject-related dimension, a reflective object-directed dimension and a pre-reflective performative dimension. The pre...

  6. Post Newtonian Rigid Body

    OpenAIRE

    Xu, Chongming; Tao, Jin-he; Wu, Xuejun

    2003-01-01

    In this paper, it is the first time to construct a complete post-Newtonian (PN) model of a rigid body by means of a new constraint on the mass current density and mass density. In our PN rigid body model most of relations, such as spin vector proportional to the angular velocity, the definition on the moment of inertia tensor, the key relation between the mass quadrupole moment and the moment of inertia tensor, rigid rotating formulae of mass quadrupole moment and the moment of inertia tensor...

  7. Biometrics Bodies, Technologies, Biopolitics

    CERN Document Server

    Pugliese, Joseph

    2012-01-01

    Biometric technologies, such as finger- or facial-scan, are being deployed across a variety of social contexts in order to facilitate and guarantee identity verification and authentication. In the post-9/11 world, biometric technologies have experienced an extraordinary period of growth as concerns about security and screening have increased. This book analyses biometric systems in terms of the application of biopolitical power - corporate, military and governmental - on the human body. It deploys cultural theory in examining the manner in which biometric technologies constitute the body as a

  8. Very Young Children's Body Image: Bodies and Minds under Construction

    Science.gov (United States)

    Birbeck, David; Drummond, Murray

    2006-01-01

    In recent years research has recognised that notions of body image, body image ideals and body dissatisfaction develop much earlier than was once thought. Forty-seven children (25 male; 22 female) aged between 5 and 6 years were interviewed on three occasions over 12 months regarding their perceptions of body image. The interviews revealed…

  9. Motion of isolated bodies

    Energy Technology Data Exchange (ETDEWEB)

    Choquet-Bruhat, Yvonne [Academie des Sciences, 23 Quai de Conti, 75270 Paris Cedex 06 (France); Friedrich, Helmut [Max-Planck-Institut fuer Gravitationsphysik, Am Muehlenberg 1, 14476 Golm (Germany)

    2006-10-21

    It is shown that sufficiently smooth initial data for the Einstein-dust or the Einstein-Maxwell-dust equations with non-negative density of compact support develop into solutions representing isolated bodies in the sense that the matter field has spatially compact support and is embedded in an exterior vacuum solution.

  10. Motion of Isolated bodies

    CERN Document Server

    Choquet-Bruhat, Y; Choquet-Bruhat, Yvonne; Friedrich, Helmut

    2006-01-01

    It is shown that sufficiently smooth initial data for the Einstein-dust or the Einstein-Maxwell-dust equations with non-negative density of compact support develop into solutions representing isolated bodies in the sense that the matter field has spatially compact support and is embedded in an exterior vacuum solution.

  11. Understanding Body Language.

    Science.gov (United States)

    Sielski, Lester M.

    1979-01-01

    The article details the significance of nonverbal communication or body language for the counselor in interview situations. It gives background material of the research done in the area of nonverbal communication, and quotes extensively from the leaders in the field. (Author)

  12. Magnetic catalyst bodies

    NARCIS (Netherlands)

    Teunissen, Wendy; Bol, A.A.; Geus, John W.

    2001-01-01

    After a discussion about the importance of the size of the catalyst bodies with reactions in the liquid-phase with a suspended catalyst, the possibilities of magnetic separation are dealt with. Deficiencies of the usual ferromagnetic particles are the reactivity and the clustering of the particles.

  13. Brain, body and culture

    DEFF Research Database (Denmark)

    Geertz, Armin W.

    2010-01-01

    This essay sketches out a biocultural theory of religion which is based on an expanded view of cognition that is anchored in brain and body (embrained and embodied), deeply dependent on culture (enculturated) and extended and distributed beyond the borders of individual brains. Such an approach u...... to scholars of religion and be submitted to further hypotheses and tests by cognitive scientists....

  14. Body composition analysis: Cellular level modeling of body component ratios

    OpenAIRE

    Z. Wang; Heymsfield, S. B.; PI-SUNYER, F.X.; Gallagher, D.; PIERSON, R.N.

    2008-01-01

    During the past two decades, a major outgrowth of efforts by our research group at St. Luke’s-Roosevelt Hospital is the development of body composition models that include cellular level models, models based on body component ratios, total body potassium models, multi-component models, and resting energy expenditure-body composition models. This review summarizes these models with emphasis on component ratios that we believe are fundamental to understanding human body composition during growt...

  15. ‘ SILENT’ LARYNGEAL FOREIGN BODY

    Directory of Open Access Journals (Sweden)

    Chandrasekhar

    2015-06-01

    Full Text Available Laryngeal foreign bodies in adults are rare. The foreign bodies accidentally entering the larynx are symptomatic in the form of choking , stridor or even death. We are presenting a rare case of foreign body in the larynx in a 42 year old male who was symptom free except for dysphonia. The foreign body was removed successfully under local anesthesia.

  16. Body Art: A Panel Discussion.

    Science.gov (United States)

    Surgenor, Peter; And Others

    1997-01-01

    Three camp directors discuss their policies regarding body art and body piercing. Only one director reported a strict policy prohibiting tattoos or body art based on standards that the camp portrays to families. However, all directors enforced policies prohibiting clothing or body art that mentions alcohol, tobacco, drug use, or inappropriate…

  17. Inclusion bodies in Plesiomonas shigelloides.

    OpenAIRE

    Pastian, M R; Bromel, M C

    1984-01-01

    Inclusion bodies were discovered in seven environmental isolates of Plesiomonas shigelloides and the P. shigelloides control (ATCC 14029). Differential staining indicated that the inclusion bodies may be composed of polyphosphates, and developmental stages of the bodies may occur. The inclusion bodies may be useful for rapid presumptive identification of this organism.

  18. Quasi Lp-Intersection Bodies

    Institute of Scientific and Technical Information of China (English)

    Wu Yang YU; Dong Hua WU; Gang Song LENG

    2007-01-01

    The purpose of this paper is to generalize the notion of intersection bodies to that of quasi Lp-intersection bodies. The Lp-analogs of the Busemann intersection inequality and the Brunn Minkowski inequality for the quasi Lp-intersection bodies are obtained. The Aleksandrov-Fenchel inequality for the mixed quasi Lp-intersection bodies is also established.

  19. Body image inflexibility mediates the relationship between body image evaluation and maladaptive body image coping strategies.

    Science.gov (United States)

    Mancuso, Serafino G

    2016-03-01

    Body image inflexibility, the unwillingness to experience negative appearance-related thoughts and emotions, is associated with negative body image and eating disorder symptoms. The present study investigated whether body image inflexibility mediated the relationship between body image evaluation and maladaptive body image coping strategies (appearance-fixing and experiential avoidance) in a college and community sample comprising 156 females aged 18-51 years (M=22.76, SD=6.96). Controlling for recruitment source (college vs. community), body image inflexibility fully mediated the relationship between body image evaluation and maladaptive body image coping strategies. Results indicated that an unwillingness to experience negative appearance-related thoughts and emotions is likely responsible for negative body image evaluation's relationship to appearance-fixing behaviours and experiential avoidance. Findings support extant evidence that interventions that explicitly target body image inflexibility, such as Acceptance and Commitment Therapy, may have utility in treating body dissatisfaction in nonclinical populations. PMID:26595857

  20. Body image inflexibility mediates the relationship between body image evaluation and maladaptive body image coping strategies.

    Science.gov (United States)

    Mancuso, Serafino G

    2016-03-01

    Body image inflexibility, the unwillingness to experience negative appearance-related thoughts and emotions, is associated with negative body image and eating disorder symptoms. The present study investigated whether body image inflexibility mediated the relationship between body image evaluation and maladaptive body image coping strategies (appearance-fixing and experiential avoidance) in a college and community sample comprising 156 females aged 18-51 years (M=22.76, SD=6.96). Controlling for recruitment source (college vs. community), body image inflexibility fully mediated the relationship between body image evaluation and maladaptive body image coping strategies. Results indicated that an unwillingness to experience negative appearance-related thoughts and emotions is likely responsible for negative body image evaluation's relationship to appearance-fixing behaviours and experiential avoidance. Findings support extant evidence that interventions that explicitly target body image inflexibility, such as Acceptance and Commitment Therapy, may have utility in treating body dissatisfaction in nonclinical populations.

  1. Body composition in detoxified alcoholics.

    Science.gov (United States)

    York, J L; Pendergast, D E

    1990-04-01

    Body composition was evaluated in healthy detoxified alcoholics (aged 20-39) and lifestyle controls, with the expectation that prolonged, excessive consumption of alcohol may bring about nutritional or toxicologic alterations in the relationship between body fat and lean body mass. Body fat was assessed by measurements of skin-fold thickness and by means of bioelectric impedance methodology. No noteworthy differences were observed between alcoholics and controls with regard to the relationship between lean body mass and body fat or in the relationship between extracellular and intracellular water. It would appear that 15-20 years of heavy alcohol consumption does not necessarily alter body composition in healthy, young alcoholics. PMID:2190482

  2. Stirring by swimming bodies

    International Nuclear Information System (INIS)

    We consider the stirring of an inviscid fluid caused by the locomotion of bodies through it. The swimmers are approximated by non-interacting cylinders or spheres moving steadily along straight lines. We find the displacement of fluid particles caused by the nearby passage of a swimmer as a function of an impact parameter. We use this to compute the effective diffusion coefficient from the random walk of a fluid particle under the influence of a distribution of swimming bodies. We compare with the results of simulations. For typical sizes, densities and swimming velocities of schools of krill, the effective diffusivity in this model is five times the thermal diffusivity. However, we estimate that viscosity increases this value by two orders of magnitude.

  3. Imaging body armor.

    Science.gov (United States)

    Harcke, H Theodore; Schauer, David A; Harris, Robert M; Campman, Steven C; Lonergan, Gael J

    2002-04-01

    This study examined the feasibility of performing radiographic studies on patients wearing standard-issue body armor. The Kevlar helmet, fragmentation vest, demining suit sleeve, and armor plate were studied with plain film and computed tomography in a simulated casualty situation. We found that the military helmet contains metal screws and metal clips in the headband, but diagnostic computed tomographic images can be obtained. Kevlar, the principal component of soft armor, has favorable photon attenuation characteristics. Plate armor of composite material also did not limit radiographic studies. Therefore, when medically advantageous, patients can be examined radiographically while wearing standard military body armor. Civilian emergency rooms should be aware of these observations because law enforcement officers wear similar protective armor. PMID:11977874

  4. Marijuana and Body Weight

    OpenAIRE

    Sansone, Randy A.; Sansone, Lori A.

    2014-01-01

    Acute marijuana use is classically associated with snacking behavior (colloquially referred to as “the munchies”). In support of these acute appetite-enhancing effects, several authorities report that marijuana may increase body mass index in patients suffering from human immunodeficiency virus and cancer. However, for these medical conditions, while appetite may be stimulated, some studies indicate that weight gain is not always clinically meaningful. In addition, in a study of cancer patien...

  5. Body Dysmorphic Disorder

    OpenAIRE

    Perihan Cam Ray; Mehmet Emin Demirkol; Lut Tamam

    2012-01-01

    Body dysmorphic disorder (BDD) is a relatively common disorder that consists of a distressing or impairing preoccupation with imagined or slight defects in appearance. BDD is commonly considered to be an obsessivecompulsive spectrum disorder, based on similarities it has with obsessive-compulsive disorder. It is important to recognize and appropriately treat BDD, as this disorder is associated with marked impairment in psychosocial functioning, notably poor quality of life, and high suicidali...

  6. PML body meets telomere

    OpenAIRE

    Chung, Inn; Osterwald, Sarah; Deeg, Katharina I.; Rippe, Karsten

    2012-01-01

    The unlimited proliferation potential of cancer cells requires the maintenance of their telomeres. This is frequently accomplished by reactivation of telomerase. However, in a significant fraction of tumors an alternative lengthening of telomeres (ALT) mechanism is active. The molecular mechanism of the ALT pathway remains elusive. In particular, the role of characteristic complexes of promyelocytic leukemia nuclear bodies (PML-NBs) with telomeres, the ALT-associated PML-NBs (APBs), is curren...

  7. Stab resistant body armour

    OpenAIRE

    Horsfall, Ian

    2000-01-01

    There is now a widely accepted need for stab resistant body armour for the police in the UK. However, very little research has been done on knife resistant systems and the penetration mechanics of sharp projectiles are poorly understood. This thesis explores the general background to knife attack and defence with a particular emphasis on the penetration mechanics of edged weapons. The energy and velocity that can be achieved in stabbing actions has been determined for a numb...

  8. Splintered body image

    OpenAIRE

    Castillo Ballén, Sonia

    2014-01-01

    Body image presentation, which made painting morevisual in the 20th century, offers visions of splinteredbodies in different versions of its extention in space andin its proyection in time. This splintered vision in visualpainting was structured by diverse factors, such as theearlier development of photography, and later by audiovisual,videography and rising virtual media. Painting´sclose-up shots on corporal action in the middle of the20th century, allowed us to question new paradigms ofcont...

  9. Few-body physics

    International Nuclear Information System (INIS)

    Few-body hadronic observables play an essential role in a wide number of processes relevant for both particle and nuclear physics. In order for Lattice QCD to offer insight into the interpretation of few-body states, a theoretical infrastructure must be developed to map Euclidean-time correlation functions to the desired Minkowski-time few-body observables. In this talk, I will first review the formal challenges associated with the studies of such systems via Lattice QCD, as first introduced by Maiani and Testa, and then review methodology to circumvent said limitations. The first main example of the latter is the formalism of Luscher to analyze elastic scattering and a second is the method of Lellouch & Luscher to analyze weak decays. I will then proceed to discus recent theoretical generalizations of these frameworks that allow for the determination of scattering amplitudes, resonances, transition and elastic form factors. Finally, I will outline outstanding problems, including those that are now beginning to be addressed.

  10. Few-body physics

    Energy Technology Data Exchange (ETDEWEB)

    Briceno, Raul [Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

    2015-05-01

    Few-body hadronic observables play an essential role in a wide number of processes relevant for both particle and nuclear physics. In order for Lattice QCD to offer insight into the interpretation of few-body states, a theoretical infrastructure must be developed to map Euclidean-time correlation functions to the desired Minkowski-time few-body observables. In this talk, I will first review the formal challenges associated with the studies of such systems via Lattice QCD, as first introduced by Maiani and Testa, and then review methodology to circumvent said limitations. The first main example of the latter is the formalism of Luscher to analyze elastic scattering and a second is the method of Lellouch & Luscher to analyze weak decays. I will then proceed to discus recent theoretical generalizations of these frameworks that allow for the determination of scattering amplitudes, resonances, transition and elastic form factors. Finally, I will outline outstanding problems, including those that are now beginning to be addressed.

  11. Body Language in Drama

    Directory of Open Access Journals (Sweden)

    Nihat ÇALIŞKAN

    2005-12-01

    Full Text Available Drama is an act continuing life-long of a human and is an art of living. Owing to drama a child can gain the apportunity of practising and learning his life in games that he likes most. Today drama is scrutinized in four subtitles as creative, educational, psychodrama and sociodrama. The concepts about drama can be explained as creaticeness, metaksis, interraction, action, activity and empathy.Drama is the explanation of a sense or thought by motion, mimic, gesture and in words. In other words it is the animation of a situation or a subject using body language, reflecting by living, transforming into life.By using the body language consciously and effectively, it has an important function at dramatizing the events, getting students’ attention in education, concretizing abstract expressions, at stres accent and increasing the understandability of messages.Pantomime technic in drama method has a great importance at using the activities and human’s world consciously and animating the expressions and events. Because a teacher’s acting biology is importatnt an educational period.In this study related to drama expression, the importance of creative, educational, psychodrama, sociodrama, body language and pandomime technic in educational period has been tried to explaired.

  12. Implicit Beliefs about Ideal Body Image Predict Body Image Dissatisfaction

    Directory of Open Access Journals (Sweden)

    Niclas eHeider

    2015-10-01

    Full Text Available We examined whether implicit measures of actual and ideal body image can be used to predict body dissatisfaction in young female adults. Participants completed two Implicit Relational Assessment Procedures (IRAPs to examine their implicit beliefs concerning actual (e.g., I am thin and desired ideal body image (e.g., I want to be thin. Body dissatisfaction was examined via self-report questionnaires and rating scales. As expected, differences in body dissatisfaction exerted a differential influence on the two IRAP scores. Specifically, the implicit belief that one is thin was lower in participants who exhibited a high degree of body dissatisfaction than in participants who exhibited a low degree of body dissatisfaction. In contrast, the implicit desire to be thin (i.e., thin ideal body image was stronger in participants who exhibited a high level of body dissatisfaction than in participants who were less dissatisfied with their body. Adding further weight to the idea that both IRAP measures captured different underlying constructs, we also observed that they correlated differently with body mass index, explicit body dissatisfaction, and explicit measures of actual and ideal body image. More generally, these findings underscore the advantage of using implicit measures that incorporate relational information relative to implicit measures that allow for an assessment of associative relations only.

  13. Rotor/body aerodynamic interactions

    Science.gov (United States)

    Betzina, M. D.; Smith, C. A.; Shinoda, P.

    1985-01-01

    A wind tunnel investigation was conducted in which independent, steady state aerodynamic forces and moments were measured on a 2.24 m diam. two bladed helicopter rotor and on several different bodies. The mutual interaction effects for variations in velocity, thrust, tip-path-plane angle of attack, body angle of attack, rotor/body position, and body geometry were determined. The results show that the body longitudinal aerodynamic characteristics are significantly affected by the presence of a rotor and hub, and that the hub interference may be a major part of such interaction. The effects of the body on the rotor performance are presented.

  14. Tess:a Phenomenal Body

    Institute of Scientific and Technical Information of China (English)

    朱利华

    2012-01-01

      Few people read Tess from Maurice Merleau-Ponty’s“body theory”. In Phenomenology of Perception, Merleau-Ponty states that it is body as the subject that perceives the world; such body is a phenomenal body in contrast to an objective body. Tess’s“being in the world”through the body connotates a new way of looking at the classic Tess. Tess’s way of perceiv⁃ing and understanding the world also enlightens us about relationship between human and self, human and other, human and soci⁃ety, human and nature.

  15. Implicit body representations and the conscious body image

    OpenAIRE

    Longo, M. R.; Haggard, P.

    2012-01-01

    Recent studies have revealed that somatosensory processing relies on a class of implicit body representations showing large distortions of size and shape. The relation between these representations and the conscious body image remains unclear. Dissociations have been reported in the clinical literature on eating disorders between different body image measures, with larger and more consistent distortions found with depictive measures, in which participants compare their body to a visual depict...

  16. Body searching for freedom

    OpenAIRE

    Silvia Bortolás

    2008-01-01

    The aim of this study is to analyze how the previous council of class of the third bimester/ 2000 is accomplished, as well as to observe students’s resistance to the rules of Escola Estadual de 1º Grau Tancredo Neves – Santa Maria – RS. Although the school follows a pegagogical liberating proposal based on Paulo Freire’s view, the council of class still call their students well behaved and badly behaved during their disciplinary practices. In that scenary the body is viewed and treated throug...

  17. The Mallory body

    DEFF Research Database (Denmark)

    Jensen, K; Gluud, C

    1994-01-01

    Drawing on data from a previously published literature survey on the clinical and experimental epidemiology of the Mallory body, we discuss current theories on its development in a pro et contra manner. Conclusions have been largely left open to the interpretations of the reader because many...... be found with disease severity or duration in alcoholic liver diseases. The roles of vitamin A deficiency and protein-calorie malnutrition are circumstantial. Drugs known to have calcium-antagonist properties and the physiological characteristics of the stress-response protein ubiquitin support the concept...

  18. Truth, body and religion

    Directory of Open Access Journals (Sweden)

    Jarl-Thure Eriksson

    2011-01-01

    Full Text Available This paper is based on the words of welcome to the symposium on Religion and the Body on 16 June 2010. In a religious context ‘truth’ is like a mantra, a certain imperative to believe in sacred things. The concept of truth and falseness arises, when we as humans compare reality, as we experience it through our senses, with the representation we have in our memory, a comparison of new information with stored information. If we look for the truth, we have to search in the human mind. There we will also find religion.

  19. Body shape preferences: associations with rater body shape and sociosexuality.

    Science.gov (United States)

    Price, Michael E; Pound, Nicholas; Dunn, James; Hopkins, Sian; Kang, Jinsheng

    2013-01-01

    There is accumulating evidence of condition-dependent mate choice in many species, that is, individual preferences varying in strength according to the condition of the chooser. In humans, for example, people with more attractive faces/bodies, and who are higher in sociosexuality, exhibit stronger preferences for attractive traits in opposite-sex faces/bodies. However, previous studies have tended to use only relatively simple, isolated measures of rater attractiveness. Here we use 3D body scanning technology to examine associations between strength of rater preferences for attractive traits in opposite-sex bodies, and raters' body shape, self-perceived attractiveness, and sociosexuality. For 118 raters and 80 stimuli models, we used a 3D scanner to extract body measurements associated with attractiveness (male waist-chest ratio [WCR], female waist-hip ratio [WHR], and volume-height index [VHI] in both sexes) and also measured rater self-perceived attractiveness and sociosexuality. As expected, WHR and VHI were important predictors of female body attractiveness, while WCR and VHI were important predictors of male body attractiveness. Results indicated that male rater sociosexuality scores were positively associated with strength of preference for attractive (low) VHI and attractive (low) WHR in female bodies. Moreover, male rater self-perceived attractiveness was positively associated with strength of preference for low VHI in female bodies. The only evidence of condition-dependent preferences in females was a positive association between attractive VHI in female raters and preferences for attractive (low) WCR in male bodies. No other significant associations were observed in either sex between aspects of rater body shape and strength of preferences for attractive opposite-sex body traits. These results suggest that among male raters, rater self-perceived attractiveness and sociosexuality are important predictors of preference strength for attractive opposite

  20. Body shape preferences: associations with rater body shape and sociosexuality.

    Directory of Open Access Journals (Sweden)

    Michael E Price

    Full Text Available There is accumulating evidence of condition-dependent mate choice in many species, that is, individual preferences varying in strength according to the condition of the chooser. In humans, for example, people with more attractive faces/bodies, and who are higher in sociosexuality, exhibit stronger preferences for attractive traits in opposite-sex faces/bodies. However, previous studies have tended to use only relatively simple, isolated measures of rater attractiveness. Here we use 3D body scanning technology to examine associations between strength of rater preferences for attractive traits in opposite-sex bodies, and raters' body shape, self-perceived attractiveness, and sociosexuality. For 118 raters and 80 stimuli models, we used a 3D scanner to extract body measurements associated with attractiveness (male waist-chest ratio [WCR], female waist-hip ratio [WHR], and volume-height index [VHI] in both sexes and also measured rater self-perceived attractiveness and sociosexuality. As expected, WHR and VHI were important predictors of female body attractiveness, while WCR and VHI were important predictors of male body attractiveness. Results indicated that male rater sociosexuality scores were positively associated with strength of preference for attractive (low VHI and attractive (low WHR in female bodies. Moreover, male rater self-perceived attractiveness was positively associated with strength of preference for low VHI in female bodies. The only evidence of condition-dependent preferences in females was a positive association between attractive VHI in female raters and preferences for attractive (low WCR in male bodies. No other significant associations were observed in either sex between aspects of rater body shape and strength of preferences for attractive opposite-sex body traits. These results suggest that among male raters, rater self-perceived attractiveness and sociosexuality are important predictors of preference strength for

  1. Help! Is This My Body?

    Science.gov (United States)

    ... your dog, or throw a Frisbee with your friends. About three quarters of all teens quit sports around the time their bodies develop. Often it's because the changes in their bodies influence which sports they compete in. Although you can ...

  2. Introduction to the Human Body

    Science.gov (United States)

    ... Resources Archived Modules Updates Introduction to the Human Body Human beings are arguably the most complex organisms on ... for the benefit of the total being. The human body is a single structure but it is made ...

  3. R-body-producing bacteria.

    Science.gov (United States)

    Pond, F R; Gibson, I; Lalucat, J; Quackenbush, R L

    1989-03-01

    Until 10 years ago, R bodies were known only as diagnostic features by which endosymbionts of paramecia were identified as kappa particles. They were thought to be limited to the cytoplasm of two species in the Paramecium aurelia species complex. Now, R bodies have been found in free-living bacteria and other Paramecium species. The organisms now known to form R bodies include the cytoplasmic kappa endosymbionts of P. biaurelia and P. tetraurelia, the macronuclear kappa endosymbionts of P. caudatum, Pseudomonas avenae (a free-living plant pathogen), Pseudomonas taeniospiralis (a hydrogen-oxidizing soil microorganism), Rhodospirillum centenum (a photosynthetic bacterium), and a soil bacterium, EPS-5028, which is probably a pseudomonad. R bodies themselves fall into five distinct groups, distinguished by size, the morphology of the R-body ribbons, and the unrolling behavior of wound R bodies. In recent years, the inherent difficulties in studying the organization and assembly of R bodies by the obligate endosymbiont kappa, have been alleviated by cloning and expressing genetic determinants for these R bodies (type 51) in Escherichia coli. Type 51 R-body synthesis requires three low-molecular-mass polypeptides. One of these is modified posttranslationally, giving rise to 12 polypeptide species, which are the major structural subunits of the R body. R bodies are encoded in kappa species by extrachromosomal elements. Type 51 R bodies, produced in Caedibacter taeniospiralis, are encoded by a plasmid, whereas bacteriophage genomes probably control R-body synthesis in other kappa species. However, there is no evidence that either bacteriophages or plasmids are present in P. avenae or P. taeniospiralis. No sequence homology was detected between type 51 R-body-encoding DNA and DNA from any R-body-producing species, except C. varicaedens 1038. The evolutionary relatedness of different types of R bodies remains unknown. PMID:2651865

  4. Lp-mixed intersection bodies

    Institute of Scientific and Technical Information of China (English)

    ZHAO ChangJian

    2008-01-01

    In this paper the author first introduce a new concept of Lp-dual mixed volumes of star bodies which extends the classical dual mixed volumes. Moreover, we extend the notions of Lp-intersection body to Lp-mixed intersection body. Inequalities for Lp-dual mixed volumes of Lp-mixed intersection bodies are established and the results established here provide new estimates for these type of inequalities.

  5. Bodies, embodiment and ubiquitous computing

    DEFF Research Database (Denmark)

    Schick, Lea; Malmborg, Lone

    2010-01-01

    This paper advocates the future of the body as a distributed and shared embodiment; an unfolded body that doesn't end at one's skin, but emerges as intercorporeality between bodies and the technological environment. Looking at new tendencies within interaction design and ubiquitous computing to see...

  6. Commercial state-sponsored bodies

    OpenAIRE

    Walsh, Brendan M.

    1987-01-01

    The commercial state-sponsered bodies comprise an important element of economic activity in Ireland. The Exchequer makes a substantial financtial contribution to these bodies. In this article the author traces the origins and rationale of the commercial state bodies, examines their performance and discusses some major policy issues arising from their operations. non-peer-reviewed

  7. Exploring Feminist Women's Body Consciousness

    Science.gov (United States)

    Rubin, Lisa R.; Nemeroff, Carol J.; Russo, Nancy Felipe

    2004-01-01

    In a qualitative investigation of young feminists' experience of body consciousness, 25 feminist women each participated in one of 6 focus groups examining the ways they experienced body image and negotiated cultural messages about women's appearance. Participants described their experience with objectification and its impact on their body image,…

  8. Body language in English Teaching

    Institute of Scientific and Technical Information of China (English)

    任竞竞

    2009-01-01

    In this article, the characteristics and functions of body language are expounded, emphasizing that the proper use of body language in English teaching, including facial expression, guestures and body distance. They can enrich the content of English teaching, diversify teaching method and add vividness to the teaching to achieve better results .

  9. Body Image Concerns

    DEFF Research Database (Denmark)

    El Ansari, Walid; Dibba, Emily; Stock, Christiane

    2014-01-01

    AIMS: This cross-sectional study aimed to determine the socio-demographic, lifestyle and well-being variables that are associated with body image concerns (BIC) and whether these associations differed between female and male students. METHODS: A cross-sectional survey; 3,706 undergraduate students...... for the association between four increasing levels of BIC as the dependent variables (no BIC, mild BIC, moderate BIC and marked BIC) on the one hand, and the socio-demographic (gender, age, year at university), lifestyle (physical activity, nutrition) and mental well-being variables (quality of life, perceived stress...... at university. Females' BICs were exclusively associated with low perceived health, higher perceived stress, studies in general as a stressor, and low physical activity. In contrast, males' BIC were found to be exclusively associated with low quality of life and with older age. CONCLUSIONS: Health promoting...

  10. Quantum many body systems

    Energy Technology Data Exchange (ETDEWEB)

    Rivasseau, Vincent [Paris-Sud Univ. Orsay (France). Laboratoire de Physique Theorique; Seiringer, Robert [McGill Univ., Montreal, QC (Canada). Dept. of Mathematics and Statistics; Solovej, Jan Philip [Copenhagen Univ. (Denmark). Dept. of Mathematics; Spencer, Thomas [Institute for Advanced Study, Princeton, NJ (United States). School of Mathematics

    2012-11-01

    The book is based on the lectures given at the CIME school ''Quantum many body systems'' held in the summer of 2010. It provides a tutorial introduction to recent advances in the mathematics of interacting systems, written by four leading experts in the field: V. Rivasseau illustrates the applications of constructive Quantum Field Theory to 2D interacting electrons and their relation to quantum gravity; R. Seiringer describes a proof of Bose-Einstein condensation in the Gross-Pitaevski limit and explains the effects of rotating traps and the emergence of lattices of quantized vortices; J.-P. Solovej gives an introduction to the theory of quantum Coulomb systems and to the functional analytic methods used to prove their thermodynamic stability; finally, T. Spencer explains the supersymmetric approach to Anderson localization and its relation to the theory of random matrices. All the lectures are characterized by their mathematical rigor combined with physical insights.

  11. Impact between deformable bodies

    International Nuclear Information System (INIS)

    The bodies are represented by constant strain finite elements so that the element internal forces can most easily be calculated, especially after yielding has taken place when the stress and strain increments are related in accordance with the Prandtl-Reuss theory. In the case of axisymmetrical problems triangular axisymmetrical elements are used whose properties are approximately calculated by sampling at the centroid of the cross-section. The external applied forces arise from the impact and contact forces at the interfaces, and the inertia forces are obtained from lumped mass matrices. The equation of motion is solved by a central difference explicit scheme in small incremental time steps. This enables the stress propagation as well as the history of plastic deformation in the bodies to be traced throughout the duration of impact. The material law is idealised to be piecewise linear, with an initial elastic portion followed by one linear hardening segment. Perfect plasticity (zero hardening) can also be allowed. A simple procedure deals with the case of loading from an elastic initial state to a final plastic state in one time step. The program has been applied to the investigation of a number of axisymmetrical problems. The three dimensional version of the program is now being coded. Examples: impact of a falling fuel stringer in a storage tube; impact of a cylinder on a rigid boundary; supported circular plate loaded by uniformly distributed impulses; impact of a non-return valve in a pipe rupture; impact of a cylindrical fuel-waste flask; impact of a conical missile on a rigid surface. (orig./HP)

  12. Human body communication performance simulations

    OpenAIRE

    Mufti, H. (Haseeb)

    2016-01-01

    Human Body Communication (HBC) is a novel communication method between devices which use human body as a transmission medium. This idea is mostly based on the concept of wireless biomedical monitoring system. The on-body sensor nodes can monitor vital signs of a human body and use the body as a transmission medium. This technology is convenient for long durations of clinical monitoring with the option of more mobility and freedom for the user. In this thesis, IEEE 802.15.6-2012 phy...

  13. The Body as a Pulse

    Directory of Open Access Journals (Sweden)

    Flavia Liberman

    2010-01-01

    Full Text Available The body is the focus of many studies and interventions. Some paradigms conceptualize the body only in relation to its motor-sensory characteristics, while others prioritize its psychological dimensions. With the aim of contributing towards formulating other perspectives within this field, some aspects of Stanley Keleman and Regina Favre's conceptualization of the body are presented here. Starting from clinical situations during seminar groups, we can take the body to be a multifaceted multimedia pulse that is continually [de]constructed through encounters. Together with the author's clinical experiences as an occupational therapist and teacher or undergraduates, these conceptualizations serve as a guide to clinical practice that is thought out, constructed and balanced by the body, using body approaches to promote encounters molded by affections and events, in an attempt to create bodies capable of sustaining the lived intensity of experiences, and which enable self-observation, closeness to other people and production of singularities.

  14. Body checking behaviors in men.

    Science.gov (United States)

    Walker, D Catherine; Anderson, Drew A; Hildebrandt, Thomas

    2009-06-01

    Males have been facing increasing pressure from the media to attain a lean, muscular physique, and are at risk for body dissatisfaction, disturbed eating and exercise behaviors, and abuse of appearance- and performance-enhancing drugs (APEDs). The aim of the current study was to examine the relationship between body checking and mood, symptoms of muscle dysmorphia, importance of shape and weight, and APED use in undergraduate males. Body checking in males was correlated with weight and shape concern, symptoms of muscle dysmorphia, depression, negative affect, and APED use. Body checking predicted APED use and uniquely accounted for the largest amount of variance in Muscle Dysmorphic Disorder Inventory (MDDI) scores (16%). Findings support the view that body checking is an important construct in male body image, muscle dysmorphia, and body change strategies and suggest a need for further research. PMID:19482568

  15. The Becoming of Bodies: Girls, media effects, and body image

    OpenAIRE

    Coleman, Rebecca

    2008-01-01

    The relations between women's bodies and images have long interested and occupied feminist theoretical and empirical work. Recently, much feminist research has focused on the relations between girls' and young women's bodies and images in “the media.” Underpinning much of this research, I argue, is an oppositional model of subject/object onto which bodies and images are mapped. Developing Deleuze's concept of becoming and exploring my own research with a small number of white British teenage ...

  16. The -Curvature Images of Convex Bodies and -Projection Bodies

    Indian Academy of Sciences (India)

    Songjun Lv; Gangsong Leng

    2008-08-01

    Associated with the -curvature image defined by Lutwak, some inequalities for extended mixed -affine surface areas of convex bodies and the support functions of -projection bodies are established. As a natural extension of a result due to Lutwak, an -type affine isoperimetric inequality, whose special cases are -Busemann–Petty centroid inequality and -affine projection inequality, respectively, is established. Some -mixed volume inequalities involving -projection bodies are also established.

  17. The relation between body semantics and spatial body representations.

    Science.gov (United States)

    van Elk, Michiel; Blanke, Olaf

    2011-11-01

    The present study addressed the relation between body semantics (i.e. semantic knowledge about the human body) and spatial body representations, by presenting participants with word pairs, one below the other, referring to body parts. The spatial position of the word pairs could be congruent (e.g. EYE / MOUTH) or incongruent (MOUTH / EYE) with respect to the spatial position of the words' referents. In addition, the spatial distance between the words' referents was varied, resulting in word pairs referring to body parts that are close (e.g. EYE / MOUTH) or far in space (e.g. EYE / FOOT). A spatial congruency effect was observed when subjects made an iconicity judgment (Experiments 2 and 3) but not when making a semantic relatedness judgment (Experiment 1). In addition, when making a semantic relatedness judgment (Experiment 1) reaction times increased with increased distance between the body parts but when making an iconicity judgment (Experiments 2 and 3) reaction times decreased with increased distance. These findings suggest that the processing of body-semantics results in the activation of a detailed visuo-spatial body representation that is modulated by the specific task requirements. We discuss these new data with respect to theories of embodied cognition and body semantics.

  18. Body fat mass in normal weight subjects

    OpenAIRE

    Stokić Edita J.; Srdić Biljana; Peter Andrea; Ivković-Lazar Tatjana A.

    2002-01-01

    Obesity is characterized by excessive body fat accumulation which may lead to serious health problems and complications. Body mass index is the most optimal parameter to evaluate the level of nutritional status and diagnose obesity. However, modern techniques studying body composition can more accurately determine whether the gain of body weight was on the account of body fat, lean body mass or total body water. If one's body mass index is in the range of normal values but the amount of body ...

  19. Stereotactic body radiation therapy

    Energy Technology Data Exchange (ETDEWEB)

    Lo, Simon S. [Univ. Hospitals Seidman Cancer Center, Cleveland, OH (United States). Dept. of Radiation Oncology; Case Western Reserve Univ., Cleveland, OH (United States). Case Comprehensive Cancer Center; Teh, Bin S. [The Methodist Hospital Cancer Center and Research Institute, Houston, TX (United States). Weill Cornell Medical College; Lu, Jiade J. [National Univ. of Singapore (Singapore). Dept. of Radiation Oncology; Schefter, Tracey E. (eds.) [Colorado Univ., Aurora, CO (United States). Dept. of Radiation Oncology

    2012-11-01

    Comprehensive an up-to-date account of the physical/technological, biological, and clinical aspects of SBRT. Examines in detail retrospective studies and prospective clinical trials for various organ sites from around the world. Written by world-renowned experts in SBRT from North America, Asia and Europe. Stereotactic body radiation therapy (SBRT) has emerged as an innovative treatment for various primary and metastatic cancers, and the past five years have witnessed a quantum leap in its use. This book provides a comprehensive and up-to-date account of the physical/technological, biological, and clinical aspects of SBRT. It will serve as a detailed resource for this rapidly developing treatment modality. The organ sites covered include lung, liver, spine, pancreas, prostate, adrenal, head and neck, and female reproductive tract. Retrospective studies and prospective clinical trials on SBRT for various organ sites from around the world are examined, and toxicities and normal tissue constraints are discussed. This book features unique insights from world-renowned experts in SBRT from North America, Asia, and Europe. It will be necessary reading for radiation oncologists, radiation oncology residents and fellows, medical physicists, medical physics residents, medical oncologists, surgical oncologists, and cancer scientists.

  20. Bodies, Spaces, Voices, Silences

    Directory of Open Access Journals (Sweden)

    Donatella Mazzoleni

    2013-07-01

    Full Text Available A good architecture should not only allow functional, formal and technical quality for urban spaces, but also let the voice of the city be perceived, listened, enjoyed. Every city has got its specific sound identity, or “ISO” (R. O. Benenzon, made up of a complex texture of background noises and fluctuation of sound figures emerging and disappearing in a game of continuous fadings. For instance, the ISO of Naples is characterized by a spread need of hearing the sound return of one’s/others voices, by a hate of silence. Cities may fall ill: illness from noise, within super-crowded neighbourhoods, or illness from silence, in the forced isolation of peripheries. The proposal of an urban music therapy denotes an unpublished and innovative enlarged interdisciplinary research path, where architecture, music, medicine, psychology, communication science may converge, in order to work for rebalancing spaces and relation life of the urban collectivity, through the care of body and sound dimensions.

  1. Move your body!

    Institute of Scientific and Technical Information of China (English)

    撒哈拉

    2005-01-01

    还怀念当年跳舞毯风靡的时光吗?左脚、右脚向前.向后,在不经意间展示你炫目的舞步。而最近PS2平台上的《EyeToy》让我们又接触到了一种需要游戏者舞动身体来参与的摄像头游戏.既玩了游戏又锻炼了身体.而昂达Eyebob摄像头让PC用户也能参与其中。想要玩玩摄像头游戏.现在不用转投Ps2的阵营.也不用改造你的硬件.只要你拥有一款摄像头.你就可以和家人与朋友轻松享受游戏的乐趣。来吧!Come on! Move your body now!

  2. Gravitational N-body Simulations

    CERN Document Server

    Trenti, M

    2008-01-01

    Gravitational N-body simulations, that is numerical solutions of the equations of motions for N particles interacting gravitationally, are widely used tools in astrophysics, with applications from few body or solar system like systems all the way up to galactic and cosmological scales. In this article we present a summary review of the field highlighting the main methods for N-body simulations and the astrophysical context in which they are usually applied.

  3. Body fluid identification in forensics

    OpenAIRE

    Ja Hyun An1, Kyoung-Jin Shin1,2, Woo Ick Yang1 & Hwan Young Lee1,2,*

    2012-01-01

    At a crime scene can give important insights into crime scenereconstruction by supporting a link between sample donorsand actual criminal acts. For more than a century, numeroustypes of body fluid identification methods have beendeveloped, such as chemical tests, immunological tests,protein catalytic activity tests, spectroscopic methods andmicroscopy. However, these conventional body fluididentification methods are mostly presumptive, and are carriedout for only one body fluid at a time. The...

  4. EFFICIENCY OF TAX BODIES' PERFORMANCE

    OpenAIRE

    Fedorovskaya, M.

    2011-01-01

    The problems of assessment of tax bodies' activities efficiency which tax administration faces are touched upon. Suggestions made provide an opportunity for bodies of legislative and executive power to take specific measures aimed at enhancing the system of tax administration in the country. Suggested criteria for assessing tax bodies' performance can be put into practice by tax authorities. A new approach to aspects of solving tasks of control over tax compliance, preventing and excluding ta...

  5. 3 - Dimensional Body Measurement Technology

    Institute of Scientific and Technical Information of China (English)

    ZHOU Xu-dong; LI Yan-mei

    2002-01-01

    3 - dimensional body measurement technology, the basis of developing high technology in industry, accelerates digital development of aplparel industry. This paper briefly introduces the history of 3 - dimensional body measurement technology, and recounts the principle and primary structure of some types of 3 - dimensional automatic body measurement system. With this understanding, it discusses prospect of 3- dimensional CAD and virtual technology used in apparel industry.

  6. Body checking behaviors in men

    OpenAIRE

    Walker, D. Catherine; Anderson, Drew A.; Hildebrandt, Thomas

    2009-01-01

    Males have been facing increasing pressure from the media to attain a lean, muscular physique, and are at risk for body dissatisfaction, disturbed eating and exercise behaviors, and abuse of appearance- and performance-enhancing drugs (APEDs). The aim of the current study was to examine the relationship between body checking and mood, symptoms of muscle dysmorphia, importance of shape and weight, and APED use in undergraduate males. Body checking in males was correlated with weight and shape ...

  7. The functional architecture of the human body: assessing body representation by sorting body parts and activities.

    Science.gov (United States)

    Bläsing, Bettina; Schack, Thomas; Brugger, Peter

    2010-05-01

    We investigated mental representations of body parts and body-related activities in two subjects with congenitally absent limbs (one with, the other without phantom sensations), a wheelchair sports group of paraplegic participants, and two groups of participants with intact limbs. To analyse mental representation structures, we applied Structure Dimensional Analysis. Verbal labels indicating body parts and related activities were presented in randomized lists that had to be sorted according to a hierarchical splitting paradigm. Participants were required to group the items according to whether or not they were considered related, based on their own body perception. Results of the groups of physically intact and paraplegic participants revealed separate clusters for the lower body, upper body, fingers and head. The participant with congenital phantom limbs also showed a clear separation between upper and lower body (but not between fingers and hands). In the participant without phantom sensations of the absent arms, no such modularity emerged, but the specific practice of his right foot in communication and daily routines was reflected. Sorting verbal labels of body parts and activities appears a useful method to assess body representation in individuals with special body anatomy or function and leads to conclusions largely compatible with other assessment procedures.

  8. The Body and the Beautiful: Health, Attractiveness and Body Composition in Men's and Women's Bodies.

    Science.gov (United States)

    Brierley, Mary-Ellen; Brooks, Kevin R; Mond, Jonathan; Stevenson, Richard J; Stephen, Ian D

    2016-01-01

    The dominant evolutionary theory of physical attraction posits that attractiveness reflects physiological health, and attraction is a mechanism for identifying a healthy mate. Previous studies have found that perceptions of the healthiest body mass index (weight scaled for height; BMI) for women are close to healthy BMI guidelines, while the most attractive BMI is significantly lower, possibly pointing to an influence of sociocultural factors in determining attractive BMI. However, less is known about ideal body size for men. Further, research has not addressed the role of body fat and muscle, which have distinct relationships with health and are conflated in BMI, in determining perceived health and attractiveness. Here, we hypothesised that, if attractiveness reflects physiological health, the most attractive and healthy appearing body composition should be in line with physiologically healthy body composition. Thirty female and 33 male observers were instructed to manipulate 15 female and 15 male body images in terms of their fat and muscle to optimise perceived health and, separately, attractiveness. Observers were unaware that they were manipulating the muscle and fat content of bodies. The most attractive apparent fat mass for female bodies was significantly lower than the healthiest appearing fat mass (and was lower than the physiologically healthy range), with no significant difference for muscle mass. The optimal fat and muscle mass for men's bodies was in line with the healthy range. Male observers preferred a significantly lower overall male body mass than did female observers. While the body fat and muscle associated with healthy and attractive appearance is broadly in line with physiologically healthy values, deviations from this pattern suggest that future research should examine a possible role for internalization of body ideals in influencing perceptions of attractive body composition, particularly in women. PMID:27257677

  9. The Body and the Beautiful: Health, Attractiveness and Body Composition in Men's and Women's Bodies.

    Directory of Open Access Journals (Sweden)

    Mary-Ellen Brierley

    Full Text Available The dominant evolutionary theory of physical attraction posits that attractiveness reflects physiological health, and attraction is a mechanism for identifying a healthy mate. Previous studies have found that perceptions of the healthiest body mass index (weight scaled for height; BMI for women are close to healthy BMI guidelines, while the most attractive BMI is significantly lower, possibly pointing to an influence of sociocultural factors in determining attractive BMI. However, less is known about ideal body size for men. Further, research has not addressed the role of body fat and muscle, which have distinct relationships with health and are conflated in BMI, in determining perceived health and attractiveness. Here, we hypothesised that, if attractiveness reflects physiological health, the most attractive and healthy appearing body composition should be in line with physiologically healthy body composition. Thirty female and 33 male observers were instructed to manipulate 15 female and 15 male body images in terms of their fat and muscle to optimise perceived health and, separately, attractiveness. Observers were unaware that they were manipulating the muscle and fat content of bodies. The most attractive apparent fat mass for female bodies was significantly lower than the healthiest appearing fat mass (and was lower than the physiologically healthy range, with no significant difference for muscle mass. The optimal fat and muscle mass for men's bodies was in line with the healthy range. Male observers preferred a significantly lower overall male body mass than did female observers. While the body fat and muscle associated with healthy and attractive appearance is broadly in line with physiologically healthy values, deviations from this pattern suggest that future research should examine a possible role for internalization of body ideals in influencing perceptions of attractive body composition, particularly in women.

  10. A Respiration Rate Body Sensor

    OpenAIRE

    Viktor Avbelj; Aleksandra Rashkovska; Roman Trobec

    2012-01-01

    We propose a new body sensor for extracting the respiration rate based on the amplitude changes in the body surface potential differences between two proximal body electrodes. The sensor could be designed as a plaster-like reusable unit that can be easily fixed onto the surface of the body. It could be equipped either with a sufficiently large memory for storing the measured data or with a low-power radio system that can transmit the measured data to a gateway for further processing. We explo...

  11. [Neuroanatomy of Isolated Body Lateropulsion].

    Science.gov (United States)

    Nakazato, Yoshihiko; Tamura, Naotoshi; Ikeda, Kei; Tanaka, Ai; Yamamoto, Toshimasa

    2016-03-01

    Axial body lateropulsion, a phenomenon where the body is pulled toward the side of the lesion, with tendency of falling down, is the well-known transient feature of lateral medullary syndrome. In some cases, axial body lateropulsion occurs without vestibular and cerebellar symptoms (isolated body lateropulsion:[iBL]). Patients with iBL have a lesion located in the spinocerebellar tract, descending lateral vestibulospinal tract, vestibulo-thalamic pathway, dentatorubrothalamic pathway, or thalamocortical fascicle. This review deals with the anatomic basis and clinical significance of iBL. PMID:27001775

  12. Physics of the Human Body

    CERN Document Server

    Herman, Irving P

    2007-01-01

    Physics of the Human Body comprehensively addresses the physical and engineering aspects of human physiology by using and building on first-year college physics and mathematics. Topics include the mechanics of the static body and the body in motion, the materials properties of the body, muscles in the body, the energetics of body metabolism, fluid flow in the cardiovascular and respiratory systems, the acoustics of sound waves in speaking and hearing, vision and the optics of the eye, the electrical properties of the body, and the basic engineering principles of feedback and control in regulating all aspects of function. The goal of this text is to understand physical issues concerning the human body, in part by developing and then using simple and subsequently more refined models of the macrophysics of the human body. Many chapters include a brief review of the necessary physical principles. There are problems at the end of each chapter; solutions to selected problems are also provided. This text is geared t...

  13. Body composition in clinical practice.

    Science.gov (United States)

    Andreoli, Angela; Garaci, Francesco; Cafarelli, Francesco Pio; Guglielmi, Giuseppe

    2016-08-01

    Nutritional status is the results of nutrients intake, absorption and utilization, able to influence physiological and pathological conditions. Nutritional status can be measured for individuals with different techniques, such as CT Body Composition, quantitative Magnetic Resonance Imaging, Ultrasound, Dual-Energy X-Ray Absorptiometry and Bioimpendance. Because obesity is becoming a worldwide epidemic, there is an increasing interest in the study of body composition to monitor conditions and delay in development of obesity-related diseases. The emergence of these evidence demonstrates the need of standard assessment of nutritional status based on body weight changes, playing an important role in several clinical setting, such as in quantitative measurement of tissues and their fluctuations in body composition, in survival rate, in pathologic condition and illnesses. Since body mass index has been shown to be an imprecise measurement of fat-free and fat mass, body cell mass and fluids, providing no information if weight changes, consequently there is the need to find a better way to evaluate body composition, in order to assess fat-free and fat mass with weight gain and loss, and during ageing. Monitoring body composition can be very useful for nutritional and medical interventional. This review is focused on the use of Body Composition in Clinical Practice. PMID:26971404

  14. Body composition in clinical practice.

    Science.gov (United States)

    Andreoli, Angela; Garaci, Francesco; Cafarelli, Francesco Pio; Guglielmi, Giuseppe

    2016-08-01

    Nutritional status is the results of nutrients intake, absorption and utilization, able to influence physiological and pathological conditions. Nutritional status can be measured for individuals with different techniques, such as CT Body Composition, quantitative Magnetic Resonance Imaging, Ultrasound, Dual-Energy X-Ray Absorptiometry and Bioimpendance. Because obesity is becoming a worldwide epidemic, there is an increasing interest in the study of body composition to monitor conditions and delay in development of obesity-related diseases. The emergence of these evidence demonstrates the need of standard assessment of nutritional status based on body weight changes, playing an important role in several clinical setting, such as in quantitative measurement of tissues and their fluctuations in body composition, in survival rate, in pathologic condition and illnesses. Since body mass index has been shown to be an imprecise measurement of fat-free and fat mass, body cell mass and fluids, providing no information if weight changes, consequently there is the need to find a better way to evaluate body composition, in order to assess fat-free and fat mass with weight gain and loss, and during ageing. Monitoring body composition can be very useful for nutritional and medical interventional. This review is focused on the use of Body Composition in Clinical Practice.

  15. Body enhancement : body images, vulnerability and moral responsibility

    NARCIS (Netherlands)

    den Dikken, A.

    2011-01-01

    The objective of this explorative study is to show that it is highly relevant to integrate cultural and personal body images into the ethical debate on human enhancement. The current debate has little attention for the motivations to make use of technology to alter the human body, such as cultural i

  16. Body Talk: Body Image Commentary on Queerty.com.

    Science.gov (United States)

    Schwartz, Joseph; Grimm, Josh

    2016-08-01

    In this study, we conducted a content analysis of 243 photographic images of men published on the gay male-oriented blog Queerty.com. We also analyzed 435 user-generated comments from a randomly selected 1-year sample. Focusing on images' body types, we found that the range of body types featured on the blog was quite narrow-the vast majority of images had very low levels of body fat and very high levels of muscularity. Users' body image-related comments typically endorsed and celebrated images; critiques of images were comparatively rare. Perspectives from objectification theory and social comparison theory suggest that the images and commentary found on the blog likely reinforce unhealthy body image in gay male communities. PMID:26849832

  17. Physics of the human body

    CERN Document Server

    Herman, Irving P

    2016-01-01

    This book comprehensively addresses the physics and engineering aspects of human physiology by using and building on first-year college physics and mathematics. Topics include the mechanics of the static body and the body in motion, the mechanical properties of the body, muscles in the body, the energetics of body metabolism, fluid flow in the cardiovascular and respiratory systems, the acoustics of sound waves in speaking and hearing, vision and the optics of the eye, the electrical properties of the body, and the basic engineering principles of feedback and control in regulating all aspects of function. The goal of this text is to clearly explain the physics issues concerning the human body, in part by developing and then using simple and subsequently more refined models of the macrophysics of the human body. Many chapters include a brief review of the underlying physics. There are problems at the end of each chapter; solutions to selected problems are also provided. This second edition enhances the treat...

  18. Foreign bodies in gastrointestinal tract

    Directory of Open Access Journals (Sweden)

    Ayşe Kefeli

    2014-03-01

    Full Text Available Objective: Ingested foreign bodies in gastrointestinal tract are a common event which can cause serious morbidity and mortality in the children and adult population. For this reason, early diagnosis and treatment are crucial for preventing these life threatening complications. In this study, we aimed to analyze the characteristics of the patients with upper gastrointestinal foreign bodies that were treated in our department. Methods: Patients diagnosed with upper gastrointestinal foreign bodies who were admitted to our hospital between February 2010 and August2013 were evaluated retrospectively. The data regarding their age, gender, clinical profile, type and localization of the esophageal foreign body, performed endoscopic procedure and initial symptoms of the patients were noted and analyzed statistically. Results: Thirty-eight patients with a diagnosis of gastrointestinal foreign body were included in this study. Of these patients, 21 were male and 17 were female. The youngest patient was 17 years old and the oldest patient was 79 years old. Most of the foreign bodies (%55.3 detected in the stomach. Food waste and metallic objects in 21 and 16 patients respectively. The most common complaint was dysphagia (%50. After endoscopic intervention three of the patients were directed to surgery. Conclusion: Early recognition and treatment of gastrointestinal foreign bodies is important as their complications are life threatening. The best method of removal of foreign bodies is controversial. Early management with upper gastrointestinal endoscopy is the most efficient and safe treatment method in current conditions.

  19. Euler's Three-Body Problem.

    Science.gov (United States)

    Wild, Walter J.

    1980-01-01

    Discusses the simplest three-body problem, known as Euler's problem. The article, intended for students in the undergraduate mathematics and physics curricula, shows how the complex equations for a specific three-body problem can be solved on a small calculator. (HM)

  20. INEQUALITIES FOR MIXED INTERSECTION BODIES

    Institute of Scientific and Technical Information of China (English)

    YUAN SHUFENG; LENG GANGSONG

    2005-01-01

    In this paper, some properties of mixed intersection bodies are given, and inequalities from the dual Brunn-Minkowski theory (such as the dual Minkowski inequality, the dual Aleksandrov-Fenchel inequalities and the. dual Brunn-Minkowski inequalities) are established for mixed intersection bodies.

  1. Guy's Guide to Body Image

    Science.gov (United States)

    ... 2 • 3 • 4 For Teens For Kids For Parents MORE ON THIS TOPIC Body Dysmorphic Disorder Are Steroids Worth the Risk? Delayed Puberty How Can I Improve My Self-Esteem? Body Image and Self-Esteem Help! Is This ...

  2. Re-Educating the Body

    Science.gov (United States)

    Holst, Jonas

    2013-01-01

    This article means to investigate the philosophical concept of human embodiment in relation to physical education. As human beings not only do we have a body that we can control, but we "are" our body and live embodied in the world, as the German thinker, Helmuth Plessner, puts it in one of his many contributions to the philosophical…

  3. Body Language in the Classroom

    Science.gov (United States)

    Miller, Patrick W.

    2005-01-01

    Ralph Waldo Emerson and Mae West would seem to have little in common, but there is one thing they both understood--the importance of body language. Educators, psychologists, anthropologists and sociologists define body language or nonverbal communication as communication without words. It includes overt behaviors such as facial expressions, eye…

  4. Heritability of adult body height

    DEFF Research Database (Denmark)

    Silventoinen, Karri; Sammalisto, Sampo; Perola, Markus;

    2003-01-01

    A major component of variation in body height is due to genetic differences, but environmental factors have a substantial contributory effect. In this study we aimed to analyse whether the genetic architecture of body height varies between affluent western societies. We analysed twin data from ei...

  5. Migrating foreign body from hypopharynx

    DEFF Research Database (Denmark)

    Mowinckel, Marius Storm; Charabi, Birgitte Wittenborg

    2014-01-01

    In this case report we present a 20-month-old girl with a migrating foreign body, a "smiley" sticker, that migrated from hypopharynx to surrounding tissue and created an abscess with a fistula, one year after ingestion. The foreign body was removed without difficulty under general anaesthesia, and...

  6. Skin Pedagogies and Abject Bodies

    Science.gov (United States)

    Kenway, Jane; Bullen, Elizabeth

    2011-01-01

    How does the beauty industry "narrate the skin"? What does it teach women from different cultural groups about the female body? How does skin function as a site where female subjection and abjection are produced and reproduced? In this paper we examine the skin industry pointing to its extreme commodification of the female body and to the…

  7. Magnetic fields of rotating bodies

    International Nuclear Information System (INIS)

    After a short historical review of the magnetism of rotating bodies a new model, based on Stochastic Electrodynamics, is briefly presented. It is shown how the theory of cooperative phenomena applies to this model. The outcome of the theory is used to analyse results obtained in a laboratory experiment on the magnetism of rotating bodies

  8. Is My Body My Property?

    OpenAIRE

    Nawrocka, Marta

    2014-01-01

    The aim of the study is to evaluate human body law protection system. The author analyse selected issues related to the human body in order to evaluate it in its legal and ethical perspective. Presenting the topic the author refers to the Convention on Human Rights and Biomedicine and the Convention for the Protection of Human Rights and Dignity of the Human Being.

  9. [Obesity: stigmatization, discrimination, body image].

    Science.gov (United States)

    Kinzl, Johann F

    2016-03-01

    Obesity is a heterogeneous condition with multifactorial genesis (genetic predisposition, life-style, psychosocial situation), but there is a relatively homogeneous negative stereotype of obese individuals, because overweight and obesity are seen as self-inflicted disorders caused by physical inactivity and disorderd eating behavior. Obese individuals are confronted with far-reaching stigmatization and discrimination. Typical stereotypes are laziness, unattractiveness, work refusal. This negative image by the environment contributes to negative self-awareness and self-stigmatization, accompanied by a poor self-esteem and feelings of poor self-control and reduced self-efficacy, resulting in poor constructive coping strategies for overweight reduction. In addition, a disturbed body image combined with deep dissatisfaction with their own body is often found in many obese individuals. There is not always a close connection between body weight and body dissatisfaction. Young women and individuals with a binge eating disorder often show an increased body dissatisfaction as well. PMID:26883770

  10. Body fluid identification in forensics

    Directory of Open Access Journals (Sweden)

    Ja Hyun An1, Kyoung-Jin Shin1,2, Woo Ick Yang1 & Hwan Young Lee1,2,*

    2012-10-01

    Full Text Available At a crime scene can give important insights into crime scenereconstruction by supporting a link between sample donorsand actual criminal acts. For more than a century, numeroustypes of body fluid identification methods have beendeveloped, such as chemical tests, immunological tests,protein catalytic activity tests, spectroscopic methods andmicroscopy. However, these conventional body fluididentification methods are mostly presumptive, and are carriedout for only one body fluid at a time. Therefore, the use of amolecular genetics-based approach using RNA profiling orDNA methylation detection has been recently proposed tosupplant conventional body fluid identification methods.Several RNA markers and tDMRs (tissue-specific differentiallymethylated regions which are specific to forensically relevantbody fluids have been identified, and their specificities andsensitivities have been tested using various samples. In thisreview, we provide an overview of the present knowledge andthe most recent developments in forensic body fluididentification and discuss its possible practical application toforensic casework.

  11. Central control of body temperature.

    Science.gov (United States)

    Morrison, Shaun F

    2016-01-01

    Central neural circuits orchestrate the behavioral and autonomic repertoire that maintains body temperature during environmental temperature challenges and alters body temperature during the inflammatory response and behavioral states and in response to declining energy homeostasis. This review summarizes the central nervous system circuit mechanisms controlling the principal thermoeffectors for body temperature regulation: cutaneous vasoconstriction regulating heat loss and shivering and brown adipose tissue for thermogenesis. The activation of these thermoeffectors is regulated by parallel but distinct efferent pathways within the central nervous system that share a common peripheral thermal sensory input. The model for the neural circuit mechanism underlying central thermoregulatory control provides a useful platform for further understanding of the functional organization of central thermoregulation, for elucidating the hypothalamic circuitry and neurotransmitters involved in body temperature regulation, and for the discovery of novel therapeutic approaches to modulating body temperature and energy homeostasis. PMID:27239289

  12. Body surface area determined by whole-body CT scanning

    DEFF Research Database (Denmark)

    Villa, Chiara; Primeau, Charlotte; Hesse, Ulrik;

    2016-01-01

    Calculation of the estimated body surface area (BSA) by body height and weight has been a challenge in the past centuries due to lack of a well-documented gold standard. More recently, available techniques such as 3D laser surface scanning and CT scanning may be expected to quantify the BSA...... in an easier and more accurate way. This study provides the first comparison between BSA obtained from post-mortem whole-body CT scans and BSA calculated by nine predictive formulae. The sample consisted of 54 male cadavers ranging from 20 to 87 years old. 3D reconstructions were generated from CT scans using...

  13. Body Image and Eating Disorders

    Directory of Open Access Journals (Sweden)

    Janete Maximiano

    2014-10-01

    Full Text Available Eating disorders should be understood in a multidimensional perspective, emphasizing a biopsicossocial context. In these pathologies it`s the body, in the first instance, that reveals the disease, being in this way the target of the conflict, revealing a disturbed body experience and as a consequence a weak conception of their personal body image. The body image is conceptualised as a subjective image that the individuals form in their own mind, about their body, in relation with differ- ent contexts of life. The intent of the studies is to comprehend the level of body image disturbance, which have concluded that in the majority of the cases, significant changes on perceptive capacity of the patients do not exist. In this way it`s important to study in a more effective and qualitative way the affective and personal factors. The authors pretend with this bibliographic revision, make a research of body image assessment to the Eating Disorders (Anorexia Nervosa and Bulimia Nervosa, and to reflect which are the best ones to adapt for Portuguese reality.

  14. Pacemakers charging using body energy.

    Science.gov (United States)

    Bhatia, Dinesh; Bairagi, Sweeti; Goel, Sanat; Jangra, Manoj

    2010-01-01

    Life-saving medical implants like pacemakers and defibrillators face a big drawback that their batteries eventually run out and patients require frequent surgery to have these batteries replaced. With the advent of technology, alternatives can be provided for such surgeries. To power these devices, body energy harvesting techniques may be employed. Some of the power sources are patient's heartbeat, blood flow inside the vessels, movement of the body parts, and the body temperature (heat). Different types of sensors are employed, such as for sensing the energy from the heartbeat the piezoelectric and semiconducting coupled nanowires are used that convert the mechanical energy into electricity. Similarly, for sensing the blood flow energy, nanogenerators driven by ultrasonic waves are used that have the ability to directly convert the hydraulic energy in human body to electrical energy. Another consideration is to use body heat employing biothermal battery to generate electricity using multiple arrays of thermoelectric generators built into an implantable chip. These generators exploit the well-known thermocouple effect. For the biothermal device to work, it needs a 2°C temperature difference across it. But there are many parts of the body where a temperature difference of 5°C exists - typically in the few millimeters just below the skin, where it is planned to place this device. This study focuses on using body heat as an alternative energy source to recharge pacemaker batteries and other medical devices and prevent the possibility of life-risk during repeated surgery.

  15. Pacemakers charging using body energy

    Directory of Open Access Journals (Sweden)

    Dinesh Bhatia

    2010-01-01

    Full Text Available Life-saving medical implants like pacemakers and defibrillators face a big drawback that their batteries eventually run out and patients require frequent surgery to have these batteries replaced. With the advent of technology, alternatives can be provided for such surgeries. To power these devices, body energy harvesting techniques may be employed. Some of the power sources are patient′s heartbeat, blood flow inside the vessels, movement of the body parts, and the body temperature (heat. Different types of sensors are employed, such as for sensing the energy from the heartbeat the piezoelectric and semiconducting coupled nanowires are used that convert the mechanical energy into electricity. Similarly, for sensing the blood flow energy, nanogenerators driven by ultrasonic waves are used that have the ability to directly convert the hydraulic energy in human body to electrical energy. Another consideration is to use body heat employing biothermal battery to generate electricity using multiple arrays of thermoelectric generators built into an implantable chip. These generators exploit the well-known thermocouple effect. For the biothermal device to work, it needs a 2°C temperature difference across it. But there are many parts of the body where a temperature difference of 5°C exists - typically in the few millimeters just below the skin, where it is planned to place this device. This study focuses on using body heat as an alternative energy source to recharge pacemaker batteries and other medical devices and prevent the possibility of life-risk during repeated surgery.

  16. Coal geology of the Paleocene-Eocene Calvert Bluff Formation (Wilcox Group) and the Eocene Manning Formation (Jackson Group) in east-central Texas; field trip guidebook for the Society for Organic Petrology, Twelfth Annual Meeting, The Woodlands, Texas, August 30, 1995

    Science.gov (United States)

    Warwick, Peter D.; Crowley, Sharon S.

    1995-01-01

    The Jackson and Wilcox Groups of eastern Texas (fig. 1) are the major lignite producing intervals in the Gulf Region. Within these groups, the major lignite-producing formations are the Paleocene-Eocene Calvert Bluff Formation (Wilcox) and the Eocene Manning Formation (Jackson). According to the Keystone Coal Industry Manual (Maclean Hunter Publishing Company, 1994), the Gulf Coast basin produces about 57 million short tons of lignite annually. The state of Texas ranks number 6 in coal production in the United States. Most of the lignite is used for electric power generation in mine-mouth power plant facilities. In recent years, particular interest has been given to lignite quality and the distribution and concentration of about a dozen trace elements that have been identified as potential hazardous air pollutants (HAPs) by the 1990 Clean Air Act Amendments. As pointed out by Oman and Finkelman (1994), Gulf Coast lignite deposits have elevated concentrations of many of the HAPs elements (Be, Cd, Co, Cr, Hg, Mn, Se, U) on a as-received gm/mmBtu basis when compared to other United States coal deposits used for fuel in thermo-electric power plants. Although regulations have not yet been established for acceptable emissions of the HAPs elements during coal burning, considerable research effort has been given to the characterization of these elements in coal feed stocks. The general purpose of the present field trip and of the accompanying collection of papers is to investigate how various aspects of east Texas lignite geology might collectively influence the quality of the lignite fuel. We hope that this collection of papers will help future researchers understand the complex, multifaceted interrelations of coal geology, petrology, palynology and coal quality, and that this introduction to the geology of the lignite deposits of east Texas might serve as a stimulus for new ideas to be applied to other coal basins in the U.S. and abroad.

  17. Body shape preferences: Associations with rater body shape and sociosexuality

    OpenAIRE

    Price, Michael E.; Nicholas Pound; James Dunn; Sian Hopkins; Jinsheng Kang

    2013-01-01

    Copyright @ 2013 Price et al. This article has been made available through the Brunel Open Access Publishing Fund. There is accumulating evidence of condition-dependent mate choice in many species, that is, individual preferences varying in strength according to the condition of the chooser. In humans, for example, people with more attractive faces/bodies, and who are higher in sociosexuality, exhibit stronger preferences for attractive traits in opposite-sex faces/bodies. However, prev...

  18. Uncommon, undeclared oesophageal foreign bodies.

    Science.gov (United States)

    Akenroye, M I; Osukoya, A T

    2012-01-01

    We report two cases of unusual and undeclared oesophageal foreign bodies. A small double-rounded calabash or bottle gourd Lagenaria siceraria, stuffed with traditional medicine designed to acquire spiritual power. A whole tricotyledonous kola nut Cola nitida also designed to make medicine to gain love from a woman after passing it out in stool. Each case presented with a sudden onset of total dysphagia and history of ingestion of foreign bodies was not volunteered by any despite direct questioning. Plain radiograph of the neck and chest in either case did not reveal presence of foreign body. Both were successfully removed through rigid oesophagoscopy. PMID:22718184

  19. Progress in computerized body tomography

    International Nuclear Information System (INIS)

    Since computerized tomography of the head has become well-established as a most important diagnostic tool in medicine, technical advance and scientific investigation has centered on CT of the remainder of the body. A proliferation of scientific papers covering many aspects of body scanning has occured, but the evidence is only slowly emerging to establish the indications, advantages, and cost effectiveness of computerized tomography below the head. An appraisal of the present status of computerized body tomography from viewpoint of the clinical radiologist is presented. 1977 planning recommendations for the western United States are cited. (orig.) 891 MG/orig. 892 MB

  20. Foreign body in the heart

    Institute of Scientific and Technical Information of China (English)

    LI Xin-min; ZHU Hong-yu; WANG Zhen-long; XU Zhao-hua

    2005-01-01

    @@ As an emergency, a foreign body in the heart should generally be removed as early as possible by surgical or non-surgical procedures in order to avoid any complications. Early treatment typically results in a better prognosis.

  1. The three-body problem

    CERN Document Server

    Musielak, Z E

    2015-01-01

    The three-body problem, which describes three masses interacting through Newtonian gravity without any restrictions imposed on the initial positions and velocities of these masses, has attracted the attention of many scientists for more than 300 years. In this paper, we present a review of the three-body problem in the context of both historical and modern developments. We describe the general and restricted (circular and elliptic) three-body problems, different analytical and numerical methods of finding solutions, methods for performing stability analysis, search for periodic orbits and resonances, and application of the results to some interesting astronomical and space dynamical settings. We also provide a brief presentation of the general and restricted relativistic three-body problems, and discuss their astronomical applications.

  2. Nonlinear Deformable-body Dynamics

    CERN Document Server

    Luo, Albert C J

    2010-01-01

    "Nonlinear Deformable-body Dynamics" mainly consists in a mathematical treatise of approximate theories for thin deformable bodies, including cables, beams, rods, webs, membranes, plates, and shells. The intent of the book is to stimulate more research in the area of nonlinear deformable-body dynamics not only because of the unsolved theoretical puzzles it presents but also because of its wide spectrum of applications. For instance, the theories for soft webs and rod-reinforced soft structures can be applied to biomechanics for DNA and living tissues, and the nonlinear theory of deformable bodies, based on the Kirchhoff assumptions, is a special case discussed. This book can serve as a reference work for researchers and a textbook for senior and postgraduate students in physics, mathematics, engineering and biophysics. Dr. Albert C.J. Luo is a Professor of Mechanical Engineering at Southern Illinois University, Edwardsville, IL, USA. Professor Luo is an internationally recognized scientist in the field of non...

  3. The Context of Body Art

    Directory of Open Access Journals (Sweden)

    Renata Clerici

    2011-10-01

    Full Text Available The present study analyses factors associated with the propensity for piercing and tattooing among adolescents, from a survey conducted in 2007 in high schools in the Veneto Region (Northeast Italy. After some descriptive analyses, multinomial logistic regression models were applied to identify what predicts the practice of, interest in, or indifference to piercing and tattooing. Results show gender differences in the approach to body modification: For girls, body art is considered a mainstream activity involving younger cohorts; piercing and tattooing become a way of increasing their own body satisfaction. For boys, factors connected with the propensity for these practices are a low cultural background and the importance given to physical appearance. For both boys and girls, a significant aspect in defining attitudes toward body art practices is the values system: Values such as enjoyment, beauty, and youth, are found to be closely connected with a high propensity for these practices.

  4. Intravascular "mulberry-like" bodies

    DEFF Research Database (Denmark)

    Sørensen, Flemming Brandt; Klebe, J G; Henriques, U V

    1988-01-01

    Intravascular "mulberry-like" bodies in a stillborn female infant with moderate maceration are reported. The histogenesis of these structures is discussed based on light-microscopic, immunohistochemical and ultrastructural findings. No demonstrable causal relation between the intravascular lesions...

  5. Hanford whole body counting manual

    International Nuclear Information System (INIS)

    This document, a reprint of the Whole Body Counting Manual, was compiled to train personnel, document operation procedures, and outline quality assurance procedures. The current manual contains information on: the location, availability, and scope of services of Hanford's whole body counting facilities; the administrative aspect of the whole body counting operation; Hanford's whole body counting facilities; the step-by-step procedure involved in the different types of in vivo measurements; the detectors, preamplifiers and amplifiers, and spectroscopy equipment; the quality assurance aspect of equipment calibration and recordkeeping; data processing, record storage, results verification, report preparation, count summaries, and unit cost accounting; and the topics of minimum detectable amount and measurement accuracy and precision. 12 refs., 13 tabs

  6. Hanford whole body counting manual

    Energy Technology Data Exchange (ETDEWEB)

    Palmer, H.E.; Brim, C.P.; Rieksts, G.A.; Rhoads, M.C.

    1987-05-01

    This document, a reprint of the Whole Body Counting Manual, was compiled to train personnel, document operation procedures, and outline quality assurance procedures. The current manual contains information on: the location, availability, and scope of services of Hanford's whole body counting facilities; the administrative aspect of the whole body counting operation; Hanford's whole body counting facilities; the step-by-step procedure involved in the different types of in vivo measurements; the detectors, preamplifiers and amplifiers, and spectroscopy equipment; the quality assurance aspect of equipment calibration and recordkeeping; data processing, record storage, results verification, report preparation, count summaries, and unit cost accounting; and the topics of minimum detectable amount and measurement accuracy and precision. 12 refs., 13 tabs.

  7. Post-Newtonian quasirigid body

    International Nuclear Information System (INIS)

    In this paper, we construct for the first time, in the first post-Newtonian (1PN) approximation, a complete model of a quasirigid body by means of a new constraint on the mass current density and mass density. In our 1PN quasirigid body model most of the relations, such as the spin vector proportional to the angular velocity, the definition of the moment of inertia tensor, the key relation between the mass quadrupole moment and the moment of inertia tensor, the rigid rotating formulas for the mass quadrupole moment, and the moment of inertia tensor, are just an extension of the main relations in the Newtonian rigid body model. When all of the 1/c2 terms are neglected, the 1PN quasirigid body model and the corresponding formulas reduce to the Newtonian version. A key relation is obtained in this paper for the first time, which might be very useful in future applications to problems in geodynamics and astronomy

  8. Suicide of a body packer.

    Science.gov (United States)

    Stichenwirth, M; Stelwag-Carion, C; Klupp, N; Hönigschnabl, S; Vycudilik, W; Bauer, G; Risser, D

    2000-01-24

    The smuggling of illicit drugs by means of body packing has become a common problem at European airports. Europe is considered to be the fastest growing market for cocaine worldwide, and the air route is the most frequently used method of trafficking cocaine. Smuggling illicit drugs by use of body packing is considered to be a high toxicological hazard because of the risk of leakage or a package bursting. We report about the first case of suicide of a body packer by re-ingesting the content of excreted cocaine packages. The consequence of this case is that the death scene investigation and autopsy assessments in case of a body packer's death should always consider the possibility of re-ingested packages. Detention personnel should be instructed by forensic and criminalistic experts to take preventive measures. PMID:10697780

  9. Aging changes in body shape

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/article/003998.htm Aging changes in body shape To use the sharing ... and both sexes. Height loss is related to aging changes in the bones, muscles, and joints. People ...

  10. JPL Small Body Database Browser

    Data.gov (United States)

    National Aeronautics and Space Administration — The JPL Small-Body Database Browser provides data for all known asteroids and many comets. Newly discovered objects and their orbits are added on a daily basis....

  11. Foreign body in the nose

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/article/000037.htm Foreign body in the nose To use the sharing ... JavaScript. This article discusses first aid for a foreign object placed into the nose. Considerations Curious young ...

  12. The three-body problem

    International Nuclear Information System (INIS)

    The three-body problem, which describes three masses interacting through Newtonian gravity without any restrictions imposed on the initial positions and velocities of these masses, has attracted the attention of many scientists for more than 300 years. In this paper, we present a review of the three-body problem in the context of both historical and modern developments. We describe the general and restricted (circular and elliptic) three-body problems, different analytical and numerical methods of finding solutions, methods for performing stability analysis and searching for periodic orbits and resonances. We apply the results to some interesting problems of celestial mechanics. We also provide a brief presentation of the general and restricted relativistic three-body problems, and discuss their astronomical applications. (review article)

  13. The Mind-Body Problem.

    Science.gov (United States)

    Fodor, Jerry A.

    1981-01-01

    Describes several different philosophies of mind with each philosophy's explanation of the mind-body problem. Philosophies discussed include dualism, materialism, functionalism, radical behaviorism, logical behaviorism and central-state identity. (DS)

  14. Body Image of Pakistani Consumers

    Directory of Open Access Journals (Sweden)

    Tariq Jalees

    2014-03-01

    Full Text Available This paper examines how media exposure, self-esteem, and religiosity influence body image of Pakistan consumers. The underpinning of this study is based on Social Comparison Theory with two additional variables (religiosity and self-esteem for understanding understand consumer attitude towards body image. A self-administered questionnaire was used. 193 persons responded at mall intercepts. The Conceptual framework was empirically tested through SEM. A positive relationship between exposure to media and body image was found while negative influence was found between self-esteem and body image. No relationship was found between religiosity and body image. The results showed mixed outcomes as compared to past studies. The scope of this study is limited to one city only and hence the finding could not be generalized. Future researcher may use a larger sample drawn throughout Pakistan, and by examining whether body image perception varies ethnically, age and gender. Media exposure is affecting the traditional norms and values of Pakistan culture and body image. The obsessions of the media and thin body image have to be controlled and this requires policy changes. Corporate sector might take initiative by not selecting ultra-thin models. They might also sponsors public service messages showing ill effects of being ultra-thin, and showing that the ultra-thin models are not real but is results of artworks and camera angles. Social Comparison Theory with two addition variable religiosity and self-esteem has been successfully extended/empirically tested in the domain of Pakistan culture.

  15. Foreign Body in Jugal Mucosa

    OpenAIRE

    Serrano, Thiago Luís Infanger; Pauna, Henrique Furlan; Hazboun, Igor Moreira; Dal Rio, Ana Cristina; Correa, Maria Elvira Pizzigatti; Nicola, Ester Maria Danielli

    2015-01-01

    Introduction Foreign body in the oral cavity may be asymptomatic for long time and only sometimes it can lead to a typical granulomatous foreign body reaction. Some patients may complain of oral pain and present signs of inflammation with purulent discharge. A granuloma is a distinct, compact microscopic structure composed of epithelioid-shaped macrophages typically surrounded by a rim of lymphocytes and filled with fibroblasts and collagen. Nowadays, the increase of cosmetic invasive procedu...

  16. Recognizing Body Dysmorphic Disorder (Dysmorphophobia)

    OpenAIRE

    Anukriti Varma; Rajesh Rastogi

    2015-01-01

    Dysmorphophobia is a psychiatric condition which frequently presents in the clinics of dermatologists and plastic surgeons. This disorder (also called body dysmorphic disorder) is troublesome to the patient whilst being confusing for the doctor. This commonly undiagnosed condition can be detected by a few simple steps. Timely referral to a psychiatrist benefits most patients suffering from it. This article describes with a case vignette, how to recognize body dysmorphic disorder presenting in...

  17. Body Image of Pakistani Consumers

    OpenAIRE

    Tariq Jalees; Ernest C de Run

    2014-01-01

    This paper examines how media exposure, self esteem, and religiosity influence body image of Pakistan consumers.The underpinning of this study is based on Social Comparison Theory with two additional variables (religiosity and self esteem) for understanding understand consumer attitude towards body image. A self administered questionnaire was used. 193 persons responded at mall intercepts. The Conceptual framework was empirically tested through SEM. A positive relationship between exposure to...

  18. Hatha yoga on body balance

    OpenAIRE

    Erick Tadeu Prado; Vagner Raso; Renata Coelho Scharlach; Cristiane Akemi Kasse

    2014-01-01

    Background: A good body balance requires a proper function of vestibular, visual, and somatosensory systems which can be reach with exercise practice and/or yoga. Aim: To determine the effects of a 5-month hatha yoga training program on body balance in young adults. Materials and Methods: This study used a controlled, nonrandomized design, where the experimental group underwent a 5-month training program and were then compared with the control group that had a sedentary lifestyle. A c...

  19. Dynamical Friction for Compound Bodies

    OpenAIRE

    Domínguez-Tenreiro, R.; Gómez-Flechoso, M. A.

    1997-01-01

    In the framework of the fluctuation-dissipation approach to dynamical friction, we derive an expression giving the orbital energy exchange experienced by a compound body as it moves interacting with a non homogeneous discrete background. The body is assumed to be composed of particles endowed with a velocity spectrum and with a non homogeneous spatial distribution. The Chandrasekhar formula is recovered in the limit of a point-like satellite with zero velocity dispersion and infinite temperat...

  20. Online Communication and Body Language

    OpenAIRE

    Alina Maria Hrisca

    2011-01-01

    bjectives: This article approaches the problem of body language, in the new context ofonline communication, trying to see how the latestdevelopment of technology influences it.PriorWork: The interest in body language has grown in the last decades, first because of the work ofscientists like Ekman, who studied micro-gestures and tried to give a universaldecoder,and secondbecause of the latest technological evolution in communication, that has stressed the importance ofnon-verbal cues.Approach:...

  1. What is a Human Body?

    DEFF Research Database (Denmark)

    Nissen, Ulrik Becker

    2016-01-01

    The essay offers an overview of different understandings of what a body is. As such, it can be read as an overview of what we mean, when we speak of a “human body”. However, the article also goes a step further; in the last section, a responsive understanding of the human body is outlined....... This is understood as responsiveness in three ways: viz an embodied self that responds to natural life, other human beings and, ultimately, to God....

  2. Railgun launch of small bodies

    Energy Technology Data Exchange (ETDEWEB)

    Drobyshevski, E.M.; Zhukov, B.G.; Sakharov, V.A. [Russian Academy of Sciences, St. Petersburg (Russian Federation). Ioffe Physico-Technical Inst.

    1995-01-01

    The small body launching using gas or plasma faces the fundamental problem caused by excess energy loss due to great wall surface/volume of the barrel ratio. That is why the efficiency of the plasma armature (PA) railgun acceleration is maximum for 8--10 mm-size bodies and drops as their size decreases. For the nuclear fusion applications, where {number_sign}1--2 mm-size pellets at 5--10 km/s velocity are desirable, one is forced to search for compromise between the body size (3--4 mm) and its velocity (3 km/s). Under these conditions, EM launchers did not demonstrate an advantage over the light-gas guns. When elaborating the {number_sign}1 mm railgun, the authors made use of the ideology of the body launching at constant acceleration close to the body strength or the electrode skin-layer explosion limits. That shortened the barrel length sufficiently. The system becomes highly compact thus permitting rapid test of new operation modes and different modifications of the design including the magnetic field augmentation. As a result of these refinements, the difficulties caused by the catastrophic supply of mass ablated from the electrodes were overcome and regimes of {number_sign}1 mm body non-sabot speed-up to 4.5 km/s were found. Potentialities of the small system created are far from being exhausted.

  3. Personality disorders and body weight.

    Science.gov (United States)

    Maclean, Johanna Catherine; Xu, Haiyong; French, Michael T; Ettner, Susan L

    2014-01-01

    We examine the impact of Axis II personality disorders (PDs) on body weight. PDs are psychiatric conditions that develop early in life from a mixture of genetics and environment, are persistent, and lead to substantial dysfunction for the affected individual. The defining characteristics of PDs conceptually link them with body weight, but the direction of the relationship likely varies across PD type. To investigate these links, we analyze data from Wave II of the National Epidemiological Survey of Alcohol and Related Conditions. We measure body weight with the body mass index (BMI) and a dichotomous indicator for obesity (BMI≥30). We find that women with PDs have significantly higher BMI and are more likely to be obese than otherwise similar women. We find few statistically significant or economically meaningful effects for men. Paranoid, schizotypal, and avoidant PDs demonstrate the strongest adverse impacts on women's body weight while dependent PD may be protective against elevated body weight among men. Findings from unconditional quantile regressions demonstrate a positive gradient between PDs and BMI in that the effects are greater for higher BMI respondents.

  4. Estimation of Body Weight from Body Size Measurements and Body Condition Scores in Dairy Cows

    DEFF Research Database (Denmark)

    Enevoldsen, Carsten; Kristensen, T.

    1997-01-01

    regimen. Results from this study indicate that a reliable model for estimating BW of very different dairy cows maintained in a wide range of environments can be developed using body condition score, demographic information, and measurements of hip height and hip width. However, for management purposes......The objective of this study was to evaluate the use of hip height and width, body condition score, and relevant demographic information to predict body weight (BW) of dairy cows. Seven regression models were developed from data from 972 observations of 554 cows. Parity, hip height, hip width......, substantial improvements can be obtained by developing models that are specific to a given site....

  5. [The anthropological approach to the "other body"].

    Science.gov (United States)

    Rozenberg, Jacques J

    2011-06-01

    Research into the anthropology of the body has tackled this wide-reaching concept of the "other body", highly relevant when applied to the field of nursing care. From the healthy biological body to the sick body, the history of anthropology shows the stages of acceptance and rejection of the "other body", male, female and animal.

  6. The body fades away: investigating the effects of transparency of an embodied virtual body on pain threshold and body ownership

    OpenAIRE

    Matteo Martini; Konstantina Kilteni; Antonella Maselli; Sanchez-Vives, Maria V.

    2015-01-01

    The feeling of “ownership” over an external dummy/virtual body (or body part) has been proven to have both physiological and behavioural consequences. For instance, the vision of an “embodied” dummy or virtual body can modulate pain perception. However, the impact of partial or total invisibility of the body on physiology and behaviour has been hardly explored since it presents obvious difficulties in the real world. In this study we explored how body transparency affects both body ownership ...

  7. Body composition: Where and when.

    Science.gov (United States)

    Mazzoccoli, Gianluigi

    2016-08-01

    The in vivo evaluation of body composition is essential in many clinical investigations, in order to accurately describe and monitor the nutritional status of a range of medical conditions and physiological processes, including sick and malnourished patients, pregnant women, breastfeeding women and the elderly, as well as in patients with cancer, osteoporosis and many other diseases. This research area is also important to the field of human nutrition and exercise physiology. Several research investigations have indicated the importance of measuring fat deposition in different body compartments, in order to gain a fuller understanding of the genetic factors that contribute to obesity, obesity-related disorders, such as dyslipidemia, and thereby to a fuller understanding of obesity associated cardio-metabolic disorders, with relevance to the relationship between body composition and energy expenditure. The spatial and temporal dimension, where and when, may influence the physiological relevance and the pathological implications of the fat composition of different body compartments, and, as such, is a new element to be considered when assessing body composition. PMID:26564096

  8. Hanford whole body counting manual

    Energy Technology Data Exchange (ETDEWEB)

    Palmer, H.E.; Rieksts, G.A.; Lynch, T.P.

    1990-06-01

    This document describes the Hanford Whole Body Counting Program as it is administered by Pacific Northwest Laboratory (PNL) in support of the US Department of Energy--Richland Operations Office (DOE-RL) and its Hanford contractors. Program services include providing in vivo measurements of internally deposited radioactivity in Hanford employees (or visitors). Specific chapters of this manual deal with the following subjects: program operational charter, authority, administration, and practices, including interpreting applicable DOE Orders, regulations, and guidance into criteria for in vivo measurement frequency, etc., for the plant-wide whole body counting services; state-of-the-art facilities and equipment used to provide the best in vivo measurement results possible for the approximately 11,000 measurements made annually; procedures for performing the various in vivo measurements at the Whole Body Counter (WBC) and related facilities including whole body counts; operation and maintenance of counting equipment, quality assurance provisions of the program, WBC data processing functions, statistical aspects of in vivo measurements, and whole body counting records and associated guidance documents. 16 refs., 48 figs., 22 tabs.

  9. Foreign bodies in the torax

    Directory of Open Access Journals (Sweden)

    Ćerimagić Zenaida

    2007-01-01

    Full Text Available Background. Metallic foreign bodies in the lung could be recognized using radiography. Non-metallic foreign bodies make difficulties because they are not as dense as metals. The aim of this report was to present the case of nonmetallic foreign bodies in the lung. Case report. A soldier of the Federation Army of Bosnia and Hertzegovina, injured in the explosion in 1998 was presented. The soldier was subjected to thoracic drainage and surgery tretment of the wound. After one year, the pulmologist treated him with tuberculostatics because of hemoptysis and pulmonary infiltration shown by a radiogram. This therapy had no effects, and the pulmologist presented this case to the thoracic surgeon who made thoracotomy removing a piece of wood (13 × 2 × 0.7 cm, 20 different-size pieces of wood, and a piece of textile from the lung. Conclusion. Patients with penetrating explosive lung injuries without metallic foreign bodies shown by a radiogram, with complications as hemoptisis, lung abscess, bronchiectasis, obstruction of the bronchus, chronic pneumonia should be subjected to thoracotomy for removing suspected foreign bodies without resecting the lung.

  10. Whole-body MRI screening

    Energy Technology Data Exchange (ETDEWEB)

    Puls, Ralf [HELIOS Klinikum Erfurt (Germany). Inst. of Diagnostic and Interventional Radiology and Neuroradiology; Hosten, Norbert (ed.) [Universitaetsklinikum Greifswald (Germany). Diagnostic Radiology and Neuroradiology

    2014-07-01

    The advent of dedicated whole-body MRI scanners has made it possible to image the human body from head to toe with excellent spatial resolution and with the sensitivity and specificity of conventional MR systems. A comprehensive screening examination by MRI relies on fast image acquisition, and this is now feasible owing to several very recent developments, including multichannel techniques, new surface coil systems, and automatic table movement. The daily analysis of whole-body MRI datasets uncovers many incidental findings, which are discussed by an interdisciplinary advisory board of physicians from all specialties. This book provides a systematic overview of these incidental findings with the aid of approximately 240 high-quality images. The radiologists involved in the project have written chapters on each organ system, presenting a structured compilation of the most common findings, their morphologic appearances on whole-body MRI, and guidance on their clinical management. Chapters on technical and ethical issues are also included. It is hoped that this book will assist other diagnosticians in deciding how to handle the most common incidental findings encountered when performing whole-body MRI.

  11. Whole-body MRI screening

    International Nuclear Information System (INIS)

    The advent of dedicated whole-body MRI scanners has made it possible to image the human body from head to toe with excellent spatial resolution and with the sensitivity and specificity of conventional MR systems. A comprehensive screening examination by MRI relies on fast image acquisition, and this is now feasible owing to several very recent developments, including multichannel techniques, new surface coil systems, and automatic table movement. The daily analysis of whole-body MRI datasets uncovers many incidental findings, which are discussed by an interdisciplinary advisory board of physicians from all specialties. This book provides a systematic overview of these incidental findings with the aid of approximately 240 high-quality images. The radiologists involved in the project have written chapters on each organ system, presenting a structured compilation of the most common findings, their morphologic appearances on whole-body MRI, and guidance on their clinical management. Chapters on technical and ethical issues are also included. It is hoped that this book will assist other diagnosticians in deciding how to handle the most common incidental findings encountered when performing whole-body MRI.

  12. Online Communication and Body Language

    Directory of Open Access Journals (Sweden)

    Alina Maria Hrisca

    2011-12-01

    Full Text Available bjectives: This article approaches the problem of body language, in the new context ofonline communication, trying to see how the latestdevelopment of technology influences it.PriorWork: The interest in body language has grown in the last decades, first because of the work ofscientists like Ekman, who studied micro-gestures and tried to give a universaldecoder,and secondbecause of the latest technological evolution in communication, that has stressed the importance ofnon-verbal cues.Approach: Using observation and the latest writing in the field, we will explain theconsequences that the use of avatars and online communication have on body language and itsinterpretation.Results:Excluding context, posture, micro-gestures, tone and so on, onlinecommunication does not only become stereotype, butalso affects real communication and especiallybody language. We can observe pragmatism of gestures, standardizations, lack of customizations,inability to read other’s body language etc.Implications:All of this shapes the Y-Generation, onethat not only fails to interpret other’s body language, but also is unable to express themselves in directcommunication.Value:This paper stresses out not only the consequencesof online communication,but also the importance of further technological development.

  13. Hanford whole body counting manual

    International Nuclear Information System (INIS)

    This document describes the Hanford Whole Body Counting Program as it is administered by Pacific Northwest Laboratory (PNL) in support of the US Department of Energy--Richland Operations Office (DOE-RL) and its Hanford contractors. Program services include providing in vivo measurements of internally deposited radioactivity in Hanford employees (or visitors). Specific chapters of this manual deal with the following subjects: program operational charter, authority, administration, and practices, including interpreting applicable DOE Orders, regulations, and guidance into criteria for in vivo measurement frequency, etc., for the plant-wide whole body counting services; state-of-the-art facilities and equipment used to provide the best in vivo measurement results possible for the approximately 11,000 measurements made annually; procedures for performing the various in vivo measurements at the Whole Body Counter (WBC) and related facilities including whole body counts; operation and maintenance of counting equipment, quality assurance provisions of the program, WBC data processing functions, statistical aspects of in vivo measurements, and whole body counting records and associated guidance documents. 16 refs., 48 figs., 22 tabs

  14. -Mixed Intersection Bodies and Star Duality

    Indian Academy of Sciences (India)

    Zhao Chang-jian; Wing-Sum Cheung

    2010-09-01

    The paper extends the two notions of the dual mixed volumes and -intersection body to -dual mixed volumes and -mixed intersection body, respectively. Inequalities for the star dual of -mixed intersection bodies are established.

  15. Recognizing body dysmorphic disorder (dysmorphophobia

    Directory of Open Access Journals (Sweden)

    Anukriti Varma

    2015-01-01

    Full Text Available Dysmorphophobia is a psychiatric condition which frequently presents in the clinics of dermatologists and plastic surgeons. This disorder (also called body dysmorphic disorder is troublesome to the patient whilst being confusing for the doctor. This commonly undiagnosed condition can be detected by a few simple steps. Timely referral to a psychiatrist benefits most patients suffering from it. This article describes with a case vignette, how to recognize body dysmorphic disorder presenting in the dermatological or aesthetic surgery set up. Diagnostic criteria, eitiology, approach to patient, management strategy and when to refer are important learning points. The importance of recognizing this disorder timely and referring the patient to the psychiatrist for appropriate treatment is crucial.This article covers all aspects of body dysmorphic disorder relevant to dermatologists and plastic surgeons and hopes to be useful in a better understanding of this disorder.

  16. Recognizing Body Dysmorphic Disorder (Dysmorphophobia).

    Science.gov (United States)

    Varma, Anukriti; Rastogi, Rajesh

    2015-01-01

    Dysmorphophobia is a psychiatric condition which frequently presents in the clinics of dermatologists and plastic surgeons. This disorder (also called body dysmorphic disorder) is troublesome to the patient whilst being confusing for the doctor. This commonly undiagnosed condition can be detected by a few simple steps. Timely referral to a psychiatrist benefits most patients suffering from it. This article describes with a case vignette, how to recognize body dysmorphic disorder presenting in the dermatological or aesthetic surgery set up. Diagnostic criteria, eitiology, approach to patient, management strategy and when to refer are important learning points. The importance of recognizing this disorder timely and referring the patient to the psychiatrist for appropriate treatment is crucial. This article covers all aspects of body dysmorphic disorder relevant to dermatologists and plastic surgeons and hopes to be useful in a better understanding of this disorder. PMID:26644741

  17. Body piercing with fatal consequences.

    Science.gov (United States)

    Ranga, N; Jeffery, A J

    2011-01-01

    Body modifications such as piercings, tattoos and surgery have increased in popularity in recent times and have become more socially acceptable. The common complications of piercing different parts of the human anatomy are well-documented, including sepsis, allergic reactions and, more rarely, endocarditis and ischaemia. Deaths related to piercing complications are primarily septic in origin. In this case, a man in his 50s died due to complications of his multiple umbilical piercings. The cause of death was unusually linked to body modification; the umbilical piercings had ultimately led to a mesenteric infarction. Cases such as these are forensically important due to potential manslaughter charges that could be brought against a piercing establishment. More importantly, this case highlights another extreme complication of body modification. Fashion statements are always changing and impact upon many lives. It is important to highlight to people the potentially life-threatening complications of common piercing practices. PMID:22715261

  18. Seepage Anisotropy of Heterogeneous Body

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    Ore dumps are heterogeneous bodies with anisotropic seepage characteristics because of the ore segregation.In an indoor experiment, a dump was constructed with three strata, where the horizontal and vertical seepage experiments were carried out.Horizontals flow are regarded as phreatic plan flows without penetration.Its seepage law satifies the Dupuit equation.With parallel lay seepage model, the equivalent seepage coefficient in the horizontal flow was obtained and was equivalent to the weighted mean of the seepage coefficient of each stratum.An unsaturated flow appeared in the vertical experiment, with a hydraulic gradient of 1.The vertical flow was equivalent to the seepage model that moved in vertical bedding; its equivalent seepage coefficient depended on the stratum with the minimum seepage coefficient.That the experiment showed clear anisotropy in a heterogeneous body was obvious with an anisotropic coefficient between 63 and 155, which is 25 to 100 times larger than that of a homogeneous body.

  19. Realistic Simulation for Body Area and Body-To-Body Networks.

    Science.gov (United States)

    Alam, Muhammad Mahtab; Ben Hamida, Elyes; Ben Arbia, Dhafer; Maman, Mickael; Mani, Francesco; Denis, Benoit; D'Errico, Raffaele

    2016-01-01

    In this paper, we present an accurate and realistic simulation for body area networks (BAN) and body-to-body networks (BBN) using deterministic and semi-deterministic approaches. First, in the semi-deterministic approach, a real-time measurement campaign is performed, which is further characterized through statistical analysis. It is able to generate link-correlated and time-varying realistic traces (i.e., with consistent mobility patterns) for on-body and body-to-body shadowing and fading, including body orientations and rotations, by means of stochastic channel models. The full deterministic approach is particularly targeted to enhance IEEE 802.15.6 proposed channel models by introducing space and time variations (i.e., dynamic distances) through biomechanical modeling. In addition, it helps to accurately model the radio link by identifying the link types and corresponding path loss factors for line of sight (LOS) and non-line of sight (NLOS). This approach is particularly important for links that vary over time due to mobility. It is also important to add that the communication and protocol stack, including the physical (PHY), medium access control (MAC) and networking models, is developed for BAN and BBN, and the IEEE 802.15.6 compliance standard is provided as a benchmark for future research works of the community. Finally, the two approaches are compared in terms of the successful packet delivery ratio, packet delay and energy efficiency. The results show that the semi-deterministic approach is the best option; however, for the diversity of the mobility patterns and scenarios applicable, biomechanical modeling and the deterministic approach are better choices. PMID:27104537

  20. Total body water and total body potassium in anorexia nervosa

    International Nuclear Information System (INIS)

    In the ill hospitalized patient with clinically relevant malnutrition, there is a measurable decrease in the ratio of the total body potassium to total body water (TBK/TBW) and a detectable increase in the ratio of total exchangeable sodium to total exchangeable potassium (Nae/Ke). To evaluate body composition analyses in anorexia nervosa patients with chronic uncomplicated semistarvation, TBK and TBW were measured by whole body K40 counting and deuterium oxide dilution in 10 females with stable anorexia nervosa and 10 age-matched female controls. The ratio of TBK/TBW was significantly (p less than 0.05) higher in anorexia nervosa patients than controls. The close inverse correlation found in published studies between TBK/TBW and Nae/Ke together with our results suggest that in anorexia nervosa, Nae/Ke may be low or normal. A decreased TBK/TBW is not a good indicator of malnutrition in the anorexia nervosa patient. The use of a decreased TBK/TBW ratio or an elevated Nae/Ke ratio as a definition of malnutrition may result in inappropriate nutritional management in the patient with severe nonstressed chronic semistarvation

  1. Cognitive-Behavioral Body Image Therapy for Body Dysmorphic Disorder.

    Science.gov (United States)

    Rosen, James C.; And Others

    1995-01-01

    Randomly assigned 54 body dysmorphic disorder (BDD) subjects to cognitive behavior therapy or no treatment. BDD symptoms were significantly decreased in therapy subjects and the disorder was eliminated in 82 percent of cases at posttreatment and 77 percent at follow-up. Subjects' overall psychological symptoms and self-esteem also improved. (RJM)

  2. Total body water and total body potassium in anorexia nervosa

    Energy Technology Data Exchange (ETDEWEB)

    Dempsey, D.T.; Crosby, L.O.; Lusk, E.; Oberlander, J.L.; Pertschuk, M.J.; Mullen, J.L.

    1984-08-01

    In the ill hospitalized patient with clinically relevant malnutrition, there is a measurable decrease in the ratio of the total body potassium to total body water (TBK/TBW) and a detectable increase in the ratio of total exchangeable sodium to total exchangeable potassium (Nae/Ke). To evaluate body composition analyses in anorexia nervosa patients with chronic uncomplicated semistarvation, TBK and TBW were measured by whole body K40 counting and deuterium oxide dilution in 10 females with stable anorexia nervosa and 10 age-matched female controls. The ratio of TBK/TBW was significantly (p less than 0.05) higher in anorexia nervosa patients than controls. The close inverse correlation found in published studies between TBK/TBW and Nae/Ke together with our results suggest that in anorexia nervosa, Nae/Ke may be low or normal. A decreased TBK/TBW is not a good indicator of malnutrition in the anorexia nervosa patient. The use of a decreased TBK/TBW ratio or an elevated Nae/Ke ratio as a definition of malnutrition may result in inappropriate nutritional management in the patient with severe nonstressed chronic semistarvation.

  3. Quantum three-body problems

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    A scheme for dealing with the quantum three-body problem is presented to separate the rotational degrees of freedom completely from the internal ones. In this method, the three-body Schridinger equation is reduced to a system of coupled partial differential equations, depending only upon three internal variables. For arbitrary total orbital angular momentum l and the parity (-1)l+λ (λ=0 or 1), the number of the equations in this system is l+1-λ. By expanding the wavefunction with respect to a complete set of orthonormal basis functions, the system of equations is further reduced to a system of linear algebraic equations.

  4. Quantum three-body problems

    Institute of Scientific and Technical Information of China (English)

    马中骐

    2000-01-01

    A scheme for dealing with the quantum three-body problem is presented to separate the rotational degrees of freedom completely from the internal ones. In this method, the three-body Schrodinger equation is reduced to a system of coupled partial differential equations, depending only upon three internal variables. For arbitrary total orbital angular momentum l and the parity ( - 1)1+ λ (λ = 0 or 1), the number of the equations in this system is l + 1 - λ . By expanding the wavef unction with respect to a complete set of orthonormal basis functions, the system of equations is further reduced to a system of linear algebraic equations.

  5. Inclusion body myositis and myopathies.

    Science.gov (United States)

    Sivakumar, K; Dalakas, M C

    1997-10-01

    Sporadic inclusion body myositis is a frequent, acquired, adult-onset vacuolar myopathy affecting proximal and distal muscles with a distinct, easily identifiable clinical pattern. Although its primary cause is still unknown, autoimmune, viral, and degenerative processes, alone or in combination, are being considered. A uniform and sustained therapeutic response using the currently available immunomodulatory agents has not yet been achieved. Hereditary, inherited noninflammatory rimmed vacuolar myopathies with similar histologic features, collectively called hereditary inclusion body myopathies, are being redefined with the use of molecular genetics. The implications of the recent advances in clinical and basic sciences are discussed in the present review.

  6. Oxidative refolding from inclusion bodies.

    Science.gov (United States)

    Nelson, Christopher A; Lee, Chung A; Fremont, Daved H

    2014-01-01

    This protocol describes the growth and purification of bacterial inclusion body proteins with an option to selenomethionine label the targeted protein through feedback inhibition of methionine biosynthesis in common (non-auxotrophic) strains of E. coli. The method includes solubilization of inclusion body proteins by chemical denaturation and disulfide reduction, renaturation of the solubilized material through rapid dilution by pulsed injection into refolding buffer containing arginine and a mixture of oxidized and reduced glutathione, recovery of the recombinant protein using a stirred cell concentrator, and removal of the aggregated or misfolded fraction by passage over size-exclusion chromatography. The quality of the resulting protein can be assessed by SDS-PAGE.

  7. Body and learning inprofessional education

    DEFF Research Database (Denmark)

    Knudsen, Lars Emmerik Damgaard; Sillesen, Agnete

    and the development of the students own strategies and methods in their learning processes becomes present. The teachers own relationship to knowledge manifests in the corporeal incarnation of the situation by the way the teacher deals with the subject, which the students more or less consciously overtakes......Title: Body and learning in becoming professional Abstract: At University College South a development project between on body and learning video-recordings are used to examine the teacher’s appearance as a professional and his or her uses of bodily forms of expressions. The empirical data...

  8. Experimental characterization of the unsteady natural wake of the full-scale square back Ahmed body: flow bi-stability and spectral analysis

    Science.gov (United States)

    Volpe, Raffaele; Devinant, Philippe; Kourta, Azeddine

    2015-05-01

    In recent years, the increasing interest in reducing the aerodynamic drag of vehicles, such as station wagons, minivans or buses, has led research to focus on the characterization of square back bluff geometries. In this paper, the results of an extensive experimental campaign on the full-scale well-known body of Ahmed et al. (1984) are presented, for two height-based Reynolds numbers, and . Eighty-one measurement points were used to map the base pressure field, while the wake topology was investigated by means of a series of ten 2D Particle Image Velocimetry planes. These measurements clearly show that the wake presents a bi-stable behavior, characterized by a random succession of switches between two well-defined mutually symmetric configurations, confirming the results from Grandemange et al. (J Fluid Mech 722:51-84, 2013b. doi: 10.1017/jfm.2013.83) for the same model. For the presented results, the timescale of this phenomenon is of the order of . The sensitivity of the bi-stability to the yaw angle was also investigated, and considerations on how to take such a behavior into account in post-processing this kind of field are given. High-frequency measurements were also carried out with four piezoelectric transducers and a synchronized two-component hot-wire. The results show a low-frequency spectral activity: peaks at and 0.19, corresponding to vortex shedding modes, were found on the lateral base pressures and in the far wake, whereas a signature at was visible on the vertical base centerline and in the recirculation bubble shear layer. Correlation analysis and proper orthogonal decomposition confirm the interpretation of the latter mode as the pumping of the recirculation bubble.

  9. Lexical-semantic body knowledge in 5- to 11-year-old children: How spatial body representation influences body semantics.

    Science.gov (United States)

    Auclair, Laurent; Jambaqué, Isabelle

    2015-01-01

    This study addresses the relation between lexico-semantic body knowledge (i.e., body semantics) and spatial body representation (i.e., structural body representation) by analyzing naming performances as a function of body structural topography. One hundred and forty-one children ranging from 5 years 2 months to 10 years 5 months old were asked to provide a lexical label for isolated body part pictures. We compared the children's naming performances according to the location of the body parts (body parts vs. head features and also upper vs. lower limbs) or to their involvement in motor skills (distal segments, joints, and broader body parts). The results showed that the children's naming performance was better for facial body parts than for other body parts. Furthermore, it was found that the naming of body parts was better for body parts related to action. These findings suggest that the development of a spatial body representation shapes the elaboration of semantic body representation processing. Moreover, this influence was not limited to younger children. In our discussion of these results, we focus on the important role of action in the development of body representations and semantic organization.

  10. Body segments and growth hormone.

    OpenAIRE

    Bundak, R; Hindmarsh, P. C.; Brook, C G

    1988-01-01

    The effects of human growth hormone treatment for five years on sitting height and subischial leg length of 35 prepubertal children with isolated growth hormone deficiency were investigated. Body segments reacted equally to treatment with human growth hormone; this is important when comparing the effect of growth hormone on the growth of children with skeletal dysplasias or after spinal irradiation.

  11. Calculating body frame size (image)

    Science.gov (United States)

    ... boned category. Determining frame size: To determine the body frame size, measure the wrist with a tape measure and use the following chart to determine whether the person is small, medium, or large boned. Women: Height under 5'2" Small = wrist size less ...

  12. Education and the Body: Prolegomena

    Science.gov (United States)

    Barrow, Robin

    2008-01-01

    There is a need to disentangle various distinct kinds of claim. The body may be important in schooling, though not in education. Movement, sport, fitness and health need to be distinguished. Does sport improve character? Does education imply knowledge about matters of health? Is learning to dance analogous to either learning to play cricket or…

  13. Body mass index in amputees.

    Science.gov (United States)

    Tzamaloukas, A H; Patron, A; Malhotra, D

    1994-01-01

    Whereas estimates of percent deviation of body weight from ideal (F delta weight) are corrected for amputation, those of body mass index (BMI) are not, creating discrepancies in evaluating obesity. A correction of the BMI formula for amputation is proposed. The formula for BMI was corrected for amputation mathematically. The mathematical model predicts that the uncorrected BMI formula underestimates body fat in unilateral amputees and overestimates body fat in subjects with bilateral amputations at the same length of the legs. F delta weight and corrected and uncorrected BMI estimates were computed in 15 subjects with unilateral leg amputation and in 8 subjects with multiple amputations. BMI estimates were as follows: in unilateral amputees, corrected 24.1 +/- 4.1 kg/m2, uncorrected 22.2 +/- 3.9 kg/m2 (p amputees, corrected 21.6 +/- 2.4 kg/m2, uncorrected 32.6 +/- 11.8 kg/m2 (p = .043). Linear regressions of F delta weight obtained from standard nutrition assessment on F delta weight computed from uncorrected and corrected BMI values were as follows: in unilateral amputees, uncorrected F delta weight = -0.079 + 0.932 x actual F delta weight, r = .974, p amputees, uncorrected F delta weight = 0.528 + 1.930 x actual F delta weight, r = .607, p is not significant, and corrected F delta weight = -0.010 + 0.920 x actual F delta weight, r = .936, p < .01.(ABSTRACT TRUNCATED AT 250 WORDS)

  14. Body dysmorphia and plastic surgery.

    Science.gov (United States)

    Kyle, Allison

    2012-01-01

    Body dysmorphic disorder is a mental disorder characterized by a preoccupation with some aspect of one's appearance. In cosmetic surgery, this preoccupation can be overlooked by practitioners resulting in a discrepancy between expected and realistic outcome. Identifying the characteristics of this disorder may be crucial to the practitioner-patient relationship in the plastic surgery setting. PMID:22929194

  15. Body proportions in Turner's syndrome.

    OpenAIRE

    Hughes, P C; Ribeiro, J; Hughes, I A

    1986-01-01

    Body proportion was studied in Turner's syndrome by measurement of standing an sitting heights in relation to chronological and bone age. The mean standard deviation score for standing height was -3.8. Disproportionate growth of the legs was not a major determinant of short stature, either before or after oestrogen replacement.

  16. Ovarian cancer and body size

    DEFF Research Database (Denmark)

    Mosgaard, Berit Jul

    2012-01-01

    Only about half the studies that have collected information on the relevance of women's height and body mass index to their risk of developing ovarian cancer have published their results, and findings are inconsistent. Here, we bring together the worldwide evidence, published and unpublished, and...

  17. Smart Body Sensor Object Networking

    Institute of Scientific and Technical Information of China (English)

    Bhumip Khasnabish

    2014-01-01

    This paper discusses smart body sensor objects (BSOs), including their networking and internetworking. Smartness can be incorpo-rated into BSOs by embedding virtualization, predictive analytics, and proactive computing and communications capabilities. A few use cases including the relevant privacy and protocol requirements are also presented. General usage and deployment eti-quette along with the relevant regulatory implications are then discussed.

  18. Sport, Modernity, and the Body

    NARCIS (Netherlands)

    N. Besnier; S. Brownell

    2012-01-01

    Over the past three decades, the important role that anthropological theory has bestowed on the body, modernity, nationalism, the state, citizenship, transnationalism, globalization, gender, and sexuality has placed sports at the center of questions central to the discipline. New approaches to the b

  19. Bodies Folded in Migrant Crypts

    DEFF Research Database (Denmark)

    Galis, Vasilis; Tzokas, Spyros; Tympas, Aristotle

    2016-01-01

    and human migrants generates a dis/abled subject. In this context, dis/ability may be a cause or consequence of migration, both in physical/material (the folding of bodies in the crypt) and cultural/semiotic terms, and may become a barrier to accessing protection, to entering and/or crossing a country...

  20. Variability in human body size

    Science.gov (United States)

    Annis, J. F.

    1978-01-01

    The range of variability found among homogeneous groups is described and illustrated. Those trends that show significantly marked differences between sexes and among a number of racial/ethnic groups are also presented. Causes of human-body size variability discussed include genetic endowment, aging, nutrition, protective garments, and occupation. The information is presented to aid design engineers of space flight hardware and equipment.

  1. Between My Body and My "Dead Body": Narratives of Coma.

    Science.gov (United States)

    Meoded Danon, Limor

    2016-01-01

    This article is based on narrative research that focuses on corporeal experience during coma and during the rehabilitation process. Seventeen participants from different areas of Israel who had been in various kinds of coma states reveal what the corporeal experience of coma is. The participants are divided into three types of narrative protagonists--"dead-alive," "rational," and "emissaries." Each of the participants redefined the boundaries of the body, especially in cases when they spoke of experiences they did not understand as corporeal, for example, out-of-body experiences, near-death experiences, or experiences of being between the earthly and unearthly. Their struggle to find suitable words to tell their coma stories emphasizes these boundaries between experiencing and telling, which crossed the normative discursive border of the medical establishment and illustrates the ambiguous nature of human existence. PMID:25810464

  2. Small Bodies, Big Discoveries: NASA's Small Bodies Education Program

    Science.gov (United States)

    Mayo, L.; Erickson, K. J.

    2014-12-01

    2014 is turning out to be a watershed year for celestial events involving the solar system's unsung heroes, small bodies. This includes the close flyby of comet C/2013 A1 / Siding Spring with Mars in October and the historic Rosetta mission with its Philae lander to comet 67P/Churyumov-Gerasimenko. Beyond 2014, the much anticipated 2015 Pluto flyby by New Horizons and the February Dawn Mission arrival at Ceres will take center stage. To deliver the excitement and wonder of our solar system's small bodies to worldwide audiences, NASA's JPL and GSFC education teams in partnership with NASA EDGE will reach out to the public through multiple venues including broadcast media, social media, science and math focused educational activities, observing challenges, interactive visualization tools like "Eyes on the Solar System" and more. This talk will highlight NASA's focused education effort to engage the public in small bodies mission science and the role these objects play in our understanding of the formation and evolution of the solar system.

  3. Body image in non-western societies

    NARCIS (Netherlands)

    A. Edmonds

    2012-01-01

    This article discusses a range of body modification and conceptions of the body in non-Western societies. It also analyzes difficulties in applying the primarily Western psychological notion of body image to different societies. Body modification is a near human universal, but has many meanings and

  4. Body Image in the Dance Class

    Science.gov (United States)

    Oliver, Wendy

    2008-01-01

    Although some research has shown that dance enhances body image and self-esteem, other research shows that it sometimes has the opposite effect and causes dancers to develop a negative body image and even eating disorders. In dance, body image is not only about maintaining a certain weight; it can also refer to specific perceived body flaws.…

  5. Body water, extracellular water, body potassium, and exchangeable sodium in body builders using anabolic steroids

    International Nuclear Information System (INIS)

    Nine competitive male body builders aged 21 to 34 who were determined to take anabolic steroids were studied before and 6 to 10 weeks after a training cycle which included steroid administration. A control group of nine subjects matched in age and duration of competitive career, but using only natural training methods were studied on a single occasion while in training. Total body potassium (TBK) by 40K, total body water (TBW) by 3H2O dilution, extracellular water (ECW) by 35SO4 dilution and zero time extrapolation, and exchangeable sodium by 24Na dilution were measured before and after training. Intracellular water (ICW) was calculated from TBW - ECW. Initially steroid users had a greater skeletal muscle mass than control subjects, and obtained a further weight gain on steroids, all in skeletal muscle, based on parallel increases in TBK and ICW. Other body composition measurements did not change significantly. A single steroid user became ill taking steroids, decreased potassium by 5%, and increased extracellular water, changes which may represent the effects of hepatic dysfunction which occurred while on anabolic steroids

  6. Thermophoretic motion of bodies with axial symmetry

    International Nuclear Information System (INIS)

    Thermophoresis of axially symmetric bodies is investigated to first order in the Knudsen number, K n. The study is made in the limit where the typical length of the immersed body is small compared with the mean free path. It is shown that in this case, in contrast to what is the case for spherical bodies, the arising thermal force on the body is not in general anti-parallel to the temperature gradient. It is also shown that the gas exerts a torque on the body, which in magnitude and direction depends on the body geometry. Equations of motion describing the body movement are derived. Stationary solutions are studied

  7. Photography and body image in maturity

    Directory of Open Access Journals (Sweden)

    Helena Brandão Viana

    2014-03-01

    Full Text Available The Elder’s Body Image have become the object of several studies in recent years due to the influence that this has on the quality of life for theirselves. The objective of this research was to evaluate the perception of body image of elderly people through personal accounts and completion of a range of Body Image for Seniors. Through a photoshoot and application of a rating scale for body image levels of body satisfaction were evaluated.

  8. Body mass of late Quaternary mammals

    OpenAIRE

    Smith, F. A.; Lyons, S.K.; Ernest, S.K. Morgan; Jones, K E; Kaufman, D M; Dayan, T.; Marquet, P. A.; Haskell, J. P.

    2003-01-01

    The purpose of this data set was to compile body mass information for all mammals on Earth so that we could investigate the patterns of body mass seen across geographic and taxonomic space and evolutionary time. We were interested in the heritability of body size across taxonomic groups (How conserved is body mass within a genus, family, and order?), in the overall pattern of body mass across continents (Do the moments and other descriptive statistics remain the same across geographic space?)...

  9. Body parts reduction and self-objectification in the objectification of sexualized bodies

    OpenAIRE

    Bernard, Philippe; Gervais, Sarah; Allen, Jill; Campomizzi, Sophie; Klein, Olivier

    2015-01-01

    A recent study showed that people rely on piecemeal, analytic processing when viewing sexualized female (vs. male) bodies, suggesting that people perceived sexualized female bodies similarly to objects. This paper will examine whether cognitive objectification of sexualized female bodies is associated with a focus on women’s body parts rather than on their whole bodies. In order to test our assertion, we asked participants to view photographs of sexual body parts or entire bodies of males and...

  10. Rigid body dynamics of mechanisms

    CERN Document Server

    Hahn, Hubert

    2003-01-01

    The second volume of Rigid Body Dynamics of Mechanisms covers applications via a systematic method for deriving model equations of planar and spatial mechanisms. The necessary theoretical foundations have been laid in the first volume that introduces the theoretical mechanical aspects of mechatronic systems. Here the focus is on the application of the modeling methodology to various examples of rigid-body mechanisms, simple planar ones as well as more challenging spatial problems. A rich variety of joint models, active constraints, plus active and passive force elements is treated. The book is intended for self-study by working engineers and students concerned with the control of mechanical systems, i.e. robotics, mechatronics, vehicles, and machine tools. The examples included are a likely source from which to choose models for university lectures.

  11. The Body under the Mask

    DEFF Research Database (Denmark)

    Nørgård, Rikke Toft

    originating from "corporeal" philosophy and phenomenology (Leder, Merleau-Ponty, Sheets-Johnstone), as well as the holistic philosophy of martial arts (Funakoshi, Nakazawa), to unveil methodological possibilities that will enable an understanding of how gamers experience to a great extent is shaped...... cannot be understood as a simple question of ergonomics, motor skills or muscle memory - it isn't a passing phase as one "learns to play the game". However, my aim isn't to neglect the importance of "stereotypical" research, as if the gamer were "just a physical acting body". Rather, the goal...... is to enrich our notion of the gamer by giving him back his body, escaping the general trend towards the "decorporalized" gamer, and establishing a balanced holistic perspective....

  12. Treatment of intracranial foreign body.

    Science.gov (United States)

    Karadas, Sevdegul; Dursun, Recep; Kiymaz, Nejmi

    2014-07-01

    Craniospinal penetrating foreign body (FB) injuries are interesting, but rarely observed, cases. They are important in terms of the complications that they may cause. The etiologies of craniospinal penetrating injuries and intracranial FB are also different. Though a sewing needle is more rarely seen in an intracranial FB, it may occur as atttempted infanticide or as a result of an accident especially in early childhood before the closure of fontanels. We detected an intracranial sewing needle in the head radiograph of a case admitted to the emergency department for another reason. We present this case since this is a rare injury and the etiologies of craniospinal penetrating foreign body have different characteristics. PMID:25255596

  13. Esophagial Foreign Body in Children

    Directory of Open Access Journals (Sweden)

    Bayram Metin

    2014-04-01

    Full Text Available Esophageal foreign bodies (OYC are common in children and prevention and timely treatment is not a current problem that can cause serious morbidity and mortality. In the United States, depending on\\' OYC people a year die of approximately 1500-1600 . Gastrointestinal esophageal stricture at the narrowest point of destination, and contains in itself three. First stenosis at the level of the cricoid cartilage, the second stenosis, nearby the left main bronchus crosses the diaphragm and passes in the region and third place. This is due to the properties of 28-ie 68% esophageal foreign bodies are seen in the digestive tract. OYC anticipated or hidden for a long time the clinical diagnosis can be difficult and serious complications. OYC the removal of rigid esophagoscopy under general anesthesia is a safe and effective method. OYC the early diagnosis and treatment is very important for the prevention of life-threatening complications

  14. Quality assurance within regulatory bodies

    International Nuclear Information System (INIS)

    The IAEA directed extensive efforts during the years 1991 to 1995 to the integral revision of all NUSS quality assurance publications, which were approved and issued as Safety Series No.50-C/SG-Q, Quality Assurance for Safety in Nuclear Power Plants and other Nuclear Installations (1996). When these quality assurance publications were developed, their prime focus was on requirements against which work performed by the licensees could be measured and assessed by the regulatory bodies. In this way, they only helped to facilitate the functions of regulators. No requirements or recommendations were provided on how the regulators should ensure the effective implementation of their own activities. The present publication is a first attempt to collect, integrate and offer available experience to directly support performance of regulatory activities. It presents a comprehensive compilation on the application of quality assurance principles and methods by regulatory bodies to their activities. The aim is consistent good performance of regulatory activities through a systematic approach

  15. Spinning bodies in curved spacetime

    Science.gov (United States)

    d'Ambrosi, G.; Satish Kumar, S.; van de Vis, J.; van Holten, J. W.

    2016-02-01

    We study the motion of neutral and charged spinning bodies in curved spacetime in the test-particle limit. We construct equations of motion using a closed covariant Poisson-Dirac bracket formulation that allows for different choices of the Hamiltonian. We derive conditions for the existence of constants of motion and apply the formalism to the case of spherically symmetric spacetimes. We show that the periastron of a spinning body in a stable orbit in a Schwarzschild or Reissner-Nordstrøm background not only precesses but also varies radially. By analyzing the stability conditions for circular motion we find the innermost stable circular orbit (ISCO) as a function of spin. It turns out that there is an absolute lower limit on the ISCOs for increasing prograde spin. Finally we establish that the equations of motion can also be derived from the Einstein equations using an appropriate energy-momentum tensor for spinning particles.

  16. HYDRODYNAMIC INTERACTIONS BETWEEN TWO BODIES

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    On the basis of model tests, potential flow theory, and viscous Computational Fluid Dynamics (CFD) method, the hydrodynamic interactions between two underwater bodies were investigated to determine the influencing factors, changing rule, interaction mechanism, and appropriate methods describing them. Some special phenomena were discovered in two series of near-wall interaction experiments. The mathematical model and predicting methods were presented for interacting forces near wall, and the calculation results agreed well with the experimental ones. From the comparisons among numerical results with respect to nonviscosity, numerical results with respect to viscosity, and measured results, data on the influence of viscosity on hydrodynamic interactions were obtained. For hydrodynamic interaction related to multi-body unsteady motions with six degrees of freedom that is difficult to simulate in tests, numerical predictions of unsteady interacting forces were given.

  17. The body fades away: investigating the effects of transparency of an embodied virtual body on pain threshold and body ownership.

    Science.gov (United States)

    Martini, Matteo; Kilteni, Konstantina; Maselli, Antonella; Sanchez-Vives, Maria V

    2015-01-01

    The feeling of "ownership" over an external dummy/virtual body (or body part) has been proven to have both physiological and behavioural consequences. For instance, the vision of an "embodied" dummy or virtual body can modulate pain perception. However, the impact of partial or total invisibility of the body on physiology and behaviour has been hardly explored since it presents obvious difficulties in the real world. In this study we explored how body transparency affects both body ownership and pain threshold. By means of virtual reality, we presented healthy participants with a virtual co-located body with four different levels of transparency, while participants were tested for pain threshold by increasing ramps of heat stimulation. We found that the strength of the body ownership illusion decreases when the body gets more transparent. Nevertheless, in the conditions where the body was semi-transparent, higher levels of ownership over a see-through body resulted in an increased pain sensitivity. Virtual body ownership can be used for the development of pain management interventions. However, we demonstrate that providing invisibility of the body does not increase pain threshold. Therefore, body transparency is not a good strategy to decrease pain in clinical contexts, yet this remains to be tested. PMID:26415748

  18. The body fades away: investigating the effects of transparency of an embodied virtual body on pain threshold and body ownership.

    Science.gov (United States)

    Martini, Matteo; Kilteni, Konstantina; Maselli, Antonella; Sanchez-Vives, Maria V

    2015-09-29

    The feeling of "ownership" over an external dummy/virtual body (or body part) has been proven to have both physiological and behavioural consequences. For instance, the vision of an "embodied" dummy or virtual body can modulate pain perception. However, the impact of partial or total invisibility of the body on physiology and behaviour has been hardly explored since it presents obvious difficulties in the real world. In this study we explored how body transparency affects both body ownership and pain threshold. By means of virtual reality, we presented healthy participants with a virtual co-located body with four different levels of transparency, while participants were tested for pain threshold by increasing ramps of heat stimulation. We found that the strength of the body ownership illusion decreases when the body gets more transparent. Nevertheless, in the conditions where the body was semi-transparent, higher levels of ownership over a see-through body resulted in an increased pain sensitivity. Virtual body ownership can be used for the development of pain management interventions. However, we demonstrate that providing invisibility of the body does not increase pain threshold. Therefore, body transparency is not a good strategy to decrease pain in clinical contexts, yet this remains to be tested.

  19. Measurements of body protein for clinical investigation

    International Nuclear Information System (INIS)

    Body protein (nitrogen) is determined by bilaterally irradiating the body with neutrons using Pu-Be sources and measuring the resultant 10.8 MeV gamma rays from the reaction 14N(n,8) 15N. In the authors lab the whole body can be scanned or separate segments of the body can be measured independently. A nitrogen index has been developed based on body size and is used as a predictor of normal total body nitrogen (TBN). They have found that TBN, when normalized to body size in this way, provides a reliable index of protein status which cannot be accurately determined by body weight, anthropometry, or body potassium measurements. Changes in body composition with age were studied by measuring the composition of 56 healthy female volunteers aged 20-80. Measurements were made for K(40K), Ca and N. It was shown that protein and bone mineral decrease with age but that this is not reflected in K or anthropometry measurements. Results of other studies to be presented include: body protein measurements pre and post TPN (total parenteral nutrition), nutritional status of patients on long term CAPD (continuous ambulatory peritoneal dialysis) and changes in body composition as a result of TPN in patients with small cell lung cancer receiving chemotherapy. Clinical results show that indirect measurements of body protein based on weight, potassium, or anthropometry, do not give an accurate measure of body protein. For an accurate measurement, direct measurement of body protein is necessary

  20. Perceptual adaptation affects attractiveness of female bodies.

    Science.gov (United States)

    Winkler, Christopher; Rhodes, Gillian

    2005-05-01

    We investigated whether short durations (5 minutes) of exposure to distorted bodies can change subsequent perceptions of attractiveness and normality. Participants rated 110 female bodies, varying in width, on either their attractiveness or normality before and after exposure to either extremely narrow (-50% of original width in Experiments 1 and 2) or extremely wide bodies (+50% of original width in Experiment 1, and +70% of original width in Experiment 2). In both experiments, the most attractive and most normal looking bodies became significantly and substantially narrower after exposure to narrow bodies. The most normal looking body changed significantly after exposure to wide bodies, but the most attractive body did not. These results show that perceptions of body attractiveness can be influenced by experience, but that there is an asymmetry between the effects of exposure to narrow and wide bodies. We consider a possible mechanism for this unexpected asymmetry, as well as possible implications for the effects of media exposure on body-image. The most attractive body shape was consistently narrower than the most normal looking body shape. Substantial changes in what looked normal were accompanied by congruent changes in what looked attractive, suggesting that a normal or average body shape may function as a reference point against which body attractiveness is judged. PMID:15969827

  1. Psychological workload and body weight

    DEFF Research Database (Denmark)

    Overgaard, Dorthe; Gyntelberg, F; Heitmann, B L

    2004-01-01

    BACKGROUND: According to Karasek's Demand/Control Model, workload can be conceptualized as job strain, a combination of psychological job demands and control in the job. High job strain may result from high job demands combined with low job control. Aim To give an overview of the literature on th...... or experimental, and should examine how chronic work stress affects eating and to what extent initial body weight is a predictor for individual differences in perceived psychological workload....

  2. Body temperature regulation in diabetes

    OpenAIRE

    Kenny, Glen P.; Sigal, Ronald J.; McGinn, Ryan

    2016-01-01

    ABSTRACT The effects of type 1 and type 2 diabetes on the body's physiological response to thermal stress is a relatively new topic in research. Diabetes tends to place individuals at greater risk for heat-related illness during heat waves and physical activity due to an impaired capacity to dissipate heat. Specifically, individuals with diabetes have been reported to have lower skin blood flow and sweating responses during heat exposure and this can have important consequences on cardiovascu...

  3. Marketing importance of body image

    OpenAIRE

    Novák, Erik

    2013-01-01

    In China, applicants for flight attendant job voluntarily visit the hospital to break the tibia bone, into which is inserted gradually the expanding facility to ultimately adds the necessary centimeters to them to have chase to become flight attendants. The physical appearance seems to play in our lives increasingly greater role. How far we can go and what we can do to make us look better? Bachelor's work "The Marekting Importance of Body Image" introduces the reader with a theoretical part o...

  4. Body piercing with fatal consequences

    OpenAIRE

    Ranga, N; Jeffery, A J

    2011-01-01

    Body modifications such as piercings, tattoos and surgery have increased in popularity in recent times and have become more socially acceptable. The common complications of piercing different parts of the human anatomy are well-documented, including sepsis, allergic reactions and, more rarely, endocarditis and ischaemia. Deaths related to piercing complications are primarily septic in origin. In this case, a man in his 50s died due to complications of his multiple umbilical piercings. The cau...

  5. Body Mass Index and Stroke

    DEFF Research Database (Denmark)

    Andersen, Klaus Kaae; Olsen, Tom Skyhøj

    2013-01-01

    Although obesity is associated with excess mortality and morbidity, mortality is lower in obese than in normal weight stroke patients (the obesity paradox). Studies now indicate that obesity is not associated with increased risk of recurrent stroke in the years after first stroke. We studied the ...... the association between body mass index (BMI) and stroke patient's risk of having a history of previous stroke (recurrent stroke)....

  6. Basal body structure in Trichonympha.

    Science.gov (United States)

    Guichard, Paul; Gönczy, Pierre

    2016-01-01

    Trichonympha is a symbiotic flagellate of many species of termites and of the wood-feeding cockroach. Remarkably, this unicellular organism harbors up to over ten thousand flagella on its surface, which serve to propel it through the viscous environment of the host hindgut. In the 1960s, analysis of resin-embedded Trichonympha samples by electron microscopy revealed that the basal bodies that give rise to these flagella are exceptionally long, with a proximal, cartwheel-bearing, region some 50 times longer than that of regular centrioles. In recent years, this salient feature has prompted the analysis of the 3D architecture of Trichonympha basal bodies in the native state using cryo-electron tomography. The resulting ~40 Å resolution map of the basal body proximal region revealed a number of novel features that may be conserved in centrioles of other systems. These include proximal-distal polarity of the pinhead structure that links the cartwheel to centriolar microtubules, as well as of the linker between the A and the C microtubules. Moreover, this work demonstrated that the cartwheel is made of stacked ring-like structures that likely each comprise 18 molecules of SAS-6 proteins. PMID:26937279

  7. Height, body size and longevity.

    Directory of Open Access Journals (Sweden)

    Samaras TT

    1999-08-01

    Full Text Available Life expectancy, mortality and longevity data related to height and body size for various US and world population samples are reviewed. Research on energy restriction, smaller body size and longevity is also examined. Information sources include various medical and scientific journals, books and personal communications with researchers. Additional information is presented based on research involving eight populations of the world noted for their health, vigor and longevity. This information includes the findings of one of the authors who led research teams to study these populations. While conflicting findings exist on the cardiovascular death rates for shorter people, many examples of short populations with very little heart disease are described. Most cancer studies indicate that shorter people have significantly lower mortality risk. Considerable data suggest that shorter people generally have greater longevity than taller people, and extensive animal research supports human longevity findings. Tall populations with low mortality rates are also described. Shorter stature and smaller body weight appear to promote better health and longevity in the absence of malnutrition and infectious diseases. Several theoretical reasons for this greater longevity potential are covered. Also discussed, is the role of socioeconomic status, diet, relative weight, environment and other factors in increasing or decreasing the longevity of individuals, regardless of their heights and weights.

  8. A NEW GENERAL 3DOF QUASI-STEADY AERODYNAMIC INSTABILITY MODEL

    DEFF Research Database (Denmark)

    Gjelstrup, Henrik; Larsen, Allan; Georgakis, Christos;

    2008-01-01

    but can generally be applied for aerodynamic instability prediction for prismatic bluff bodies. The 3DOF, which make up the movement of the model, are the displacements in the XY-plane and the rotation around the bluff body’s rotational axis. The proposed model incorporates inertia coupling between......This paper proposes a three degrees of freedom (3DOF) quasi-steady aerodynamic model and instability criterion for a bluff body which is uniform along the length axis. The model and criterion has been developed in the frame of investigating aerodynamic instability of cables due to ice accretions...... the three degrees of freedom and is capable of estimating the onset of aerodynamic instability for changes in drag, lift and moment, which is a function of wind angle of attack in relation to the x-axis of the bluff body, Reynolds number and wind angle in relation to the length axis of the bluff body...

  9. An examination of body tracing among women with high body dissatisfaction.

    Science.gov (United States)

    Williams, Gail A; Hudson, Danae L; Whisenhunt, Brooke L; Crowther, Janis H

    2014-09-01

    Within eating disorder treatment programs, a body tracing activity is often used to address body dissatisfaction and overestimation of body size; however, the effects of this activity have never been empirically evaluated. This research examined the effects of body tracing on body dissatisfaction and mood among 56 female participants assigned to either a body tracing or control group. Scores were collected on trait body dissatisfaction and a series of Visual Analogue Scales (VAS). Results showed that trait body dissatisfaction moderated the relationship between group and levels of state appearance dissatisfaction and anxiety. These results suggest that individuals experiencing higher levels of trait body dissatisfaction demonstrated greater state body dissatisfaction following participation in the body tracing activity. Individuals with lower trait body dissatisfaction experienced greater anxiety after drawing a human body. These findings have potential implications for the use of this strategy in the treatment of eating disorder patients.

  10. Core formation in silicate bodies

    Science.gov (United States)

    Nimmo, F.; O'Brien, D. P.; Kleine, T.

    2008-12-01

    Differentiation of a body into a metallic core and silicate mantle occurs most efficiently if temperatures are high enough to allow at least the metal to melt [1], and is enhanced if matrix deformation occurs [2]. Elevated temperatures may occur due to either decay of short-lived radio-isotopes, or gravitational energy release during accretion [3]. For bodies smaller than the Moon, core formation happens primarily due to radioactive decay. The Hf-W isotopic system may be used to date core formation; cores in some iron meteorites and the eucrite parent body (probably Vesta) formed within 1 My and 1-4~My of solar system formation, respectively [4]. These formation times are early enough to ensure widespread melting and differentiation by 26Al decay. Incorporation of Fe60 into the core, together with rapid early mantle solidification and cooling, may have driven early dynamo activity on some bodies [5]. Iron meteorites are typically depleted in sulphur relative to chondrites, for unknown reasons [6]. This depletion contrasts with the apparently higher sulphur contents of cores in larger planetary bodies, such as Mars [7], and also has a significant effect on the timing of core solidification. For bodies of Moon-size and larger, gravitational energy released during accretion is probably the primary cause of core formation [3]. The final stages of accretion involve large, stochastic collisions [8] between objects which are already differentiated. During each collision, the metallic cores of the colliding objects merge on timescales of a few hours [9]. Each collision will reset the Hf-W isotopic signature of both mantle and core, depending on the degree to which the impactor core re-equilibrates with the mantle of the target [10]. The re-equilibration efficiency depends mainly on the degree to which the impactor emulsifies [11], which is very uncertain. Results from N-body simulations [8,12] suggest that significant degrees of re- equilibration are required [4,10]. Re

  11. Flesh as Communication -- Body Art and Body Theory

    OpenAIRE

    Falk Heinrich

    2012-01-01

    On the last pages of The Visible and the Invisible, Merleau-Ponty investigates “the bond between flesh and idea, and the internal armature which [it] manifests and which it conceals.” Flesh and idea are intertwined in that the body reflects on itself in the act of perception and, one could add, action. A correlative bond lies in communication theory as the operational difference between ego and alter-ego. This article investigates the non-semiotic intertwinement of ‘flesh’ in art perception...

  12. Development of methods for body composition studies

    Energy Technology Data Exchange (ETDEWEB)

    Mattsson, Soeren [Department of Radiation Physics, Lund University, Malmoe University Hospital, SE-205 02 Malmoe (Sweden); Thomas, Brian J [School of Physical and Chemical Sciences, Queensland University of Technology, Brisbane, QLD 4001 (Australia)

    2006-07-07

    This review is focused on experimental methods for determination of the composition of the human body, its organs and tissues. It summarizes the development and current status of fat determinations from body density, total body water determinations through the dilution technique, whole and partial body potassium measurements for body cell mass estimates, in vivo neutron activation analysis for body protein measurements, dual-energy absorptiometry (DEXA), computed tomography (CT) and magnetic resonance imaging (MRI, fMRI) and spectroscopy (MRS) for body composition studies on tissue and organ levels, as well as single- and multiple-frequency bioimpedance (BIA) and anthropometry as simple easily available methods. Methods for trace element analysis in vivo are also described. Using this wide range of measurement methods, together with gradually improved body composition models, it is now possible to quantify a number of body components and follow their changes in health and disease. (review)

  13. Development of methods for body composition studies

    International Nuclear Information System (INIS)

    This review is focused on experimental methods for determination of the composition of the human body, its organs and tissues. It summarizes the development and current status of fat determinations from body density, total body water determinations through the dilution technique, whole and partial body potassium measurements for body cell mass estimates, in vivo neutron activation analysis for body protein measurements, dual-energy absorptiometry (DEXA), computed tomography (CT) and magnetic resonance imaging (MRI, fMRI) and spectroscopy (MRS) for body composition studies on tissue and organ levels, as well as single- and multiple-frequency bioimpedance (BIA) and anthropometry as simple easily available methods. Methods for trace element analysis in vivo are also described. Using this wide range of measurement methods, together with gradually improved body composition models, it is now possible to quantify a number of body components and follow their changes in health and disease. (review)

  14. Body donation in India: a review

    Directory of Open Access Journals (Sweden)

    Shrikant A. Rokade

    2013-06-01

    Full Text Available The study of anatomy is inseparable from cadaveric dissection. However scarcity of cadavers is felt all over the world. Body donation is the preferred and major source of cadavers worldwide. It is defined as an informed and free act of giving one’s whole body after death for medical education and research. This article gives a brief review of history of body donation. It reveals the details about who can donate and who can accept the body along with procedure followed to donate body in India. It discusses the donors’ attitude behind body donation and factors preventing people from body donation. It deals with approach of various religions towards body donation. It discusses some important ways to overcome the scarcity of bodies in India and the world. [Int J Res Med Sci 2013; 1(3.000: 173-177

  15. Examining a model of dispositional mindfulness, body comparison, and body satisfaction

    NARCIS (Netherlands)

    Dijkstra, Pieternel; Barelds, Dick P. H.

    2011-01-01

    The present study examined the links between dispositional mindfulness, body comparison, and body satisfaction. It was expected that mindfulness would be associated with less body comparison and more body satisfaction. Two models were tested: one exploring body comparison as a mediator between mindf

  16. Workshop on Body Image: Creating or Reinventing a Positive Body Image.

    Science.gov (United States)

    Ahmed, Christine

    This paper examines the culturization of body image and the impact of body image on women and men, noting that the strict definition of body size has made many women and men dissatisfied with their bodies. The first section defines body image and culturization, explaining how the current media images put tremendous pressure on men and women that…

  17. The Relations among Body Image, Physical Attractiveness, and Body Mass in Adolescence.

    Science.gov (United States)

    Rosenblum, Gianine D.; Lewis, Michael

    1999-01-01

    Examined body dissatisfaction, physical attractiveness, and body mass index in adolescents at 13, 15, and 18 years of age. Found that sex differences in body dissatisfaction emerged between 13 and 15 years and were maintained. Girls' body dissatisfaction increased, whereas boys' decreased. Body dissatisfaction was weakly related to others' rating…

  18. Effects of Whole Body Vibration Training on Body Composition in Adolescents with Down Syndrome

    Science.gov (United States)

    Gonzalez-Aguero, Alejandro; Matute-Llorente, Angel; Gomez-Cabello, Alba; Casajus, Jose A.; Vicente-Rodriguez, German

    2013-01-01

    The present study aimed to determine the effect of 20 weeks of whole body vibration (WBV) on the body composition of adolescents with Down syndrome (DS). Thirty adolescent with DS were divided into two groups: control and WBV. Whole body, upper and lower limbs body fat and lean body mass were measured with dual energy X-ray absorptiometry (DXA)…

  19. The perception of emotion in body expressions.

    Science.gov (United States)

    de Gelder, B; de Borst, A W; Watson, R

    2015-01-01

    During communication, we perceive and express emotional information through many different channels, including facial expressions, prosody, body motion, and posture. Although historically the human body has been perceived primarily as a tool for actions, there is now increased understanding that the body is also an important medium for emotional expression. Indeed, research on emotional body language is rapidly emerging as a new field in cognitive and affective neuroscience. This article reviews how whole-body signals are processed and understood, at the behavioral and neural levels, with specific reference to their role in emotional communication. The first part of this review outlines brain regions and spectrotemporal dynamics underlying perception of isolated neutral and affective bodies, the second part details the contextual effects on body emotion recognition, and final part discusses body processing on a subconscious level. More specifically, research has shown that body expressions as compared with neutral bodies draw upon a larger network of regions responsible for action observation and preparation, emotion processing, body processing, and integrative processes. Results from neurotypical populations and masking paradigms suggest that subconscious processing of affective bodies relies on a specific subset of these regions. Moreover, recent evidence has shown that emotional information from the face, voice, and body all interact, with body motion and posture often highlighting and intensifying the emotion expressed in the face and voice. PMID:26263069

  20. Isotropic bodies and Bourgain's problem

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    [1]Milman, V. D., Pajor, A., Isotropic position and inertia ellipsoid and zonoids of the unit ball of a normed ndimensional space, Geometric aspects of functional analysis (1987-1988), Lecture Notes in Math., 1989, 1376:64-104.[2]Blaschke, W., Uber affine Geometry ⅩⅣ: eine minimum Aufgabe fur Legendres tragheits Ellipsoid, Ber. verh.sachs. Akad. d. Wiss., 1918, 70: 72-75.[3]Blaschke, W., Uber affine Geometry Ⅺ: losing der "Vierpunkproblems" von Sylvester aus der Teorie der geometrischen Wahrsdeinlichkeiten, Leipziger Berichte, 1917, 69: 436-453.[4]John, F., Polar correspondence with respect to convex regions, Duke Math. J., 1937, 3(2): 355-369.[5]Lutwak, E., Yang, D., Zhang, G., A new ellipsoid associated with convex bodes, Duke. Math. J., 2000, 104:375-390.[6]Bourgain, J., On the distribution of polynomails on high dimensional convex sets, Geometric aspects of functional analysis (1989-1990), Lecture Notes in Math., 1991, 1469: 127-137.[7]Dar, S., Remarks on Bourgain's problem on slicing of convex bodies, Geomitric aspects of functional analysis,in Oper. Theory Adv. Appl., Vol, 77, Basel: Birkhauser, 1995, 61-66.[8]Ball, K., Normed spaces with a weak-Gordon-Lewis property, in: Proc. of Funct. Anal., University of Texas and Austin (1987-1989), Lecture Notes in Math., 1991, 1470: 36-47.[9]Schneider, R., Weil, W., Zonoids and related topics, in Convexity and Its Applications (eds. Gruber, P. M., Wills,J. M.), Basel: Birkhauser, 1983, 296-317.[10]Bourgain, J., Klartag, B., Milman, V., A reduction of the slicing problem to finite volume ratio bodies, Geometry/Functional Analysis, C. R. Acad. Sci. Paris, Ser. I, 2003, 336: 331-334.[11]Ren, D. L., An Introduction to Integral Geometry (in Chinese), Shanghai: Science and Technology Press, 1988.[12]Gardner, R. J., Geometric Tomography, Cambridge: Cambridge University Press, 1995.[13]Leichtweiβ, K., Affine Geometry of Convex Bodies, Heidelberg: J. A. Barth, 1998.[14]Schneider, R., Convex Bodies: The Brunn

  1. Network evolution of body plans.

    Directory of Open Access Journals (Sweden)

    Koichi Fujimoto

    Full Text Available One of the major goals in evolutionary developmental biology is to understand the relationship between gene regulatory networks and the diverse morphologies and their functionalities. Are the diversities solely triggered by random events, or are they inevitable outcomes of an interplay between evolving gene networks and natural selection? Segmentation in arthropod embryogenesis represents a well-known example of body plan diversity. Striped patterns of gene expression that lead to the future body segments appear simultaneously or sequentially in long and short germ-band development, respectively. Moreover, a combination of both is found in intermediate germ-band development. Regulatory genes relevant for stripe formation are evolutionarily conserved among arthropods, therefore the differences in the observed traits are thought to have originated from how the genes are wired. To reveal the basic differences in the network structure, we have numerically evolved hundreds of gene regulatory networks that produce striped patterns of gene expression. By analyzing the topologies of the generated networks, we show that the characteristics of stripe formation in long and short germ-band development are determined by Feed-Forward Loops (FFLs and negative Feed-Back Loops (FBLs respectively, and those of intermediate germ-band development are determined by the interconnections between FFL and negative FBL. Network architectures, gene expression patterns and knockout responses exhibited by the artificially evolved networks agree with those reported in the fly Drosophila melanogaster and the beetle Tribolium castaneum. For other arthropod species, principal network architectures that remain largely unknown are predicted. Our results suggest that the emergence of the three modes of body segmentation in arthropods is an inherent property of the evolving networks.

  2. BlufF Your Way Through Any Conversation

    Institute of Scientific and Technical Information of China (English)

    TimClark; 佳冰

    1996-01-01

    在决定是否采用佳冰同志的来稿时,我们曾踌躇再三。诚然,Tim Clark在文中称:Don’t misunderstand me-I’m not advocating lying,但是细览此文,总有数处让人感到不是滋味。本刊最终决定选用此文,原因如下: ·本文在某种程度上揭示了西方社会社交圈的“秘”,灯红酒绿,管弦如流的社交聚会上,居然可能会有人指着你说You are a fraud!而且需设法“leave a lasting impression of erudition博学)”! ·在社交圈内,Silence js gold看来不总是那么适用,我们反对诡辩术(sophistry),但并不否定积极的社交语言艺术。在突然有人提问:What do you think?时,本文提供的three opinions等尚可借鉴。 ·拓展知识面不是仅仅为了社交,但可以使自己的社交形象更趋完美。其中关于D. H. Lawrence的一则秘闻读者尽可付之一笑。然而,我们可从中得到的积极启示是:平时勿忘点滴知识的积累。在一次英语界的聚会上,一人指着桌中央可旋转的置菜木盘问:此物英语怎样称呼?举桌哑然。此刻,上菜的服务员小姐在侧应道:这叫Lazy Susan,接着还戏说了此名来源。席间气氛顿时活跃,众人对这位小姐也自然“另眼”相看。 本文注释力求从简,尽量留给读者一点驰骋想象的空间。如I am awestruck中的awestruck,以及James Knox Polk等就不加赘注了。文?

  3. Scotts Bluff National Monument Tract and Boundary Data

    Data.gov (United States)

    National Park Service, Department of the Interior — These ESRI shape files are of National Park Service tract and boundary data that was created by the Land Resources Division. Tracts are numbered and created by the...

  4. The Road Inventory of Marble Bluff National Fish Hatchery

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — To determine the relative needs of the U.S. Fish and Wildlife Service, the Federal Highway Administration (FHWA) was asked to inventory all public access and...

  5. Oregon Islands - Invasive Species Removal at Coquille Point Coastal Bluff

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — The proposed project is a part of the Refuge invasive species management program and will help achieve goals and priority habitats objectives identified in the...

  6. Stratification in Natural Water Bodies

    DEFF Research Database (Denmark)

    Møller, Jacob Steen

    2004-01-01

    Density stratification of natural water bodies plays an important role for a number of civil engineering problems. The origin of stratification in natural water is discussed and the Black Sea, the Gulf of Katchch, and Maarmorilik Fiord in Greenland are described and used as examples. Stratification...... has a number of civil engineering implications. The lock exchange problem is used as a canonical example, and implications for water exchange and sedimentation is discussed by means of examples: Sedimentation in locks and estuaries, salt transport into fresh water reservoirs, water exchange...

  7. Foreign Body Aspiration in Pregnancy

    Directory of Open Access Journals (Sweden)

    Andrew L. Atkinson

    2012-01-01

    Full Text Available A 24-year-old morbidly obese African American gravida 1, with a history of severe asthma complicated by multiple inpatient admissions, presents at 30 weeks gestation with a foreign body in her left main stem bronchus. After a failed bronchoscopy postpartum, the patient slipped into respiratory failure and was subsequently intubated, spending two weeks in the intensive care unit. After two more attempts of trying to retrieve the foreign object from her lung via bronchoscopy, she eventually contracted a postobstructive pneumonia and underwent a left lower lung lobectomy for curative treatment.

  8. Body Language in The Classroom

    OpenAIRE

    Özbent, Sueda

    2007-01-01

    In-class communication mostly occurs non-verbally by means of “body language”. During a classroom lesson, we can observe an increase of “non-verbal” signals of abstract terms rather than concrete terms even when the content of the lesson is verbal to a great extent. Here in this work, the following points will be dealt with regarding their consequences on the lesson: the way the teacher “looks” at the students, the teacher\\'s posture in the classroom, his “procsemic”-behavior in the clo...

  9. Bodies that Danced their Voices

    Directory of Open Access Journals (Sweden)

    Gisela Reis Biancalana

    2016-01-01

    Full Text Available The article makes a reflection about the relevance of the voice perceived as body in movement. This understanding is first discussed under the light of the assumptions of authors from performing arts, theater and dance. Next, it was made a proposal for a creative process in dance which considered the collaboration of performers on their path. Dance work was developed with actors and it had the voice as the main driving element. This artwork aimed to discuss a possible move towards a vocal pedagogy for the scene performers.

  10. 浅谈Body language

    Institute of Scientific and Technical Information of China (English)

    唐晓琴

    2007-01-01

      语言一般分为书面语言(the written language)和口头语言(the spoken language).但是,在人们日常交流中或在许多场合下,还有一种重要的交流方式往往被人们所忽视,这就是身势语言(the body language),即各种手势、姿势和身势.……

  11. 浅谈Body language

    Institute of Scientific and Technical Information of China (English)

    唐晓琴

    2007-01-01

    语言一般分为书面语言(thewritten language)和口头语言(the spoken language)。但是,在人们曰常交流中或在许多场合下,还有一种重要的交流方式往往被人们所忽视,这就是身势语言(the body language),即各种手势、姿势和身势。

  12. The Silent Language of an Artificial Body

    Directory of Open Access Journals (Sweden)

    Alina Maria Hrisca

    2012-07-01

    Full Text Available This article presents some alterations of body language, due to the interventions in/on thebody. Body language has been theorized a lot in the last decades, and one of the most importantauthors we will refer to is Paul Ekman and his micro-expressions theory. Ekman tried to give auniversaldecoderof involuntary face reactions, and this is important now more than ever, becausemicro-expression are more and more diminished, due to the latest chemical and technicalinterventions in/on the body (especially the face.Using observation and some new works in thefields of both philosophy and sociology, we will analyze the effects on body-language of thesealterations ofthe body.Minimizing a lot the micro-gestures and face-expressions, as well as stressingthe functional aspect of an artificial body, body-language has a lot to suffer. It gets reduced andpeople begin toreadbodies only through their presence, not by their expressions. Standardization anda very simplified body-language and non-verbal cues are also consequences of an artificial body.Allof this makes body-language hard to express and at the same time hard todecode. This paper stressesthe effects thatan artificial body has on body-language, and also the importance of choosing a rightpath in the future interventions in/over the body.

  13. Body fat mass in normal weight subjects

    Directory of Open Access Journals (Sweden)

    Stokić Edita J.

    2002-01-01

    Full Text Available Obesity is characterized by excessive body fat accumulation which may lead to serious health problems and complications. Body mass index is the most optimal parameter to evaluate the level of nutritional status and diagnose obesity. However, modern techniques studying body composition can more accurately determine whether the gain of body weight was on the account of body fat, lean body mass or total body water. If one's body mass index is in the range of normal values but the amount of body fat is above normal range, we talk about sarcopenic obesity. In order to evaluate presence of sarcopenic obesity, a group of 140 normal weight students of the Faculty of Medicine in Novi Sad were measured. Apart from standard anthropometrical parameters the amount of body fat was also determined by using the method of bioelectrical impedance analysis. Sarcopenic obesity was diagnosed in 25.71% of examined students. By using body mass index values this type of obesity cannot be diagnosed, and knowing that a higher amount of body fat in normal weight persons can lead to complications, especially metabolic, it is of great importance to evaluate the amount of body fat accurately.

  14. The protective role of body appreciation against media-induced body dissatisfaction.

    Science.gov (United States)

    Andrew, Rachel; Tiggemann, Marika; Clark, Levina

    2015-09-01

    This study aimed to examine the protective role of positive body image against negative effects produced by viewing thin-idealised media. University women (N=68) completed trait measures of body appreciation and media protective strategies. At a subsequent session, participants viewed 11 thin-ideal advertisements. Body dissatisfaction was assessed before and after advertisement exposure, and state measures of self-objectification, appearance comparison, and media protective strategies were completed. Results indicated that body appreciation predicted less change in body dissatisfaction following exposure, such that participants with low body appreciation experienced increased body dissatisfaction, while those with high body appreciation did not. Although state appearance comparison predicted increased body dissatisfaction, neither state self-objectification nor appearance comparison accounted for body appreciation's protective effect. Trait and state media protective strategies positively correlated with body appreciation, but also did not account for body appreciation's protective effect. The results point to intervention targets and highlight future research directions.

  15. The protective role of body appreciation against media-induced body dissatisfaction.

    Science.gov (United States)

    Andrew, Rachel; Tiggemann, Marika; Clark, Levina

    2015-09-01

    This study aimed to examine the protective role of positive body image against negative effects produced by viewing thin-idealised media. University women (N=68) completed trait measures of body appreciation and media protective strategies. At a subsequent session, participants viewed 11 thin-ideal advertisements. Body dissatisfaction was assessed before and after advertisement exposure, and state measures of self-objectification, appearance comparison, and media protective strategies were completed. Results indicated that body appreciation predicted less change in body dissatisfaction following exposure, such that participants with low body appreciation experienced increased body dissatisfaction, while those with high body appreciation did not. Although state appearance comparison predicted increased body dissatisfaction, neither state self-objectification nor appearance comparison accounted for body appreciation's protective effect. Trait and state media protective strategies positively correlated with body appreciation, but also did not account for body appreciation's protective effect. The results point to intervention targets and highlight future research directions. PMID:26311661

  16. Body Awareness: a phenomenological inquiry into the common ground of mind-body therapies

    OpenAIRE

    Silow Theresa; Kerr Catherine E; Price Cynthia J; Daubenmier Jennifer J; Wrubel Judith; Mehling Wolf E; Gopisetty Viranjini; Stewart Anita L

    2011-01-01

    Abstract Enhancing body awareness has been described as a key element or a mechanism of action for therapeutic approaches often categorized as mind-body approaches, such as yoga, TaiChi, Body-Oriented Psychotherapy, Body Awareness Therapy, mindfulness based therapies/meditation, Feldenkrais, Alexander Method, Breath Therapy and others with reported benefits for a variety of health conditions. To better understand the conceptualization of body awareness in mind-body therapies, leading practiti...

  17. Oroesophageal Fish Bone Foreign Body.

    Science.gov (United States)

    Kim, Heung Up

    2016-07-01

    Fish bone foreign body (FFB) is the most frequent food-associated foreign body (FB) in adults, especially in Asia, versus meat in Western countries. The esophageal sphincter is the most common lodging site. Esophageal FB disease tends to occur more frequently in men than in women. The first diagnostic method is laryngoscopic examination. Because simple radiography of the neck has low sensitivity, if perforation or severe complications requiring surgery are expected, computed tomography should be used. The risk factors associated with poor prognosis are long time lapse after FB involvement, bone type, and longer FB (>3 cm). Bleeding and perforation are more common in FFB disease than in other FB diseases. Esophageal FB disease requires urgent treatment within 24 hours. However, FFB disease needs emergent treatment, preferably within 2 hours, and definitely within 6 hours. Esophageal FFB disease usually occurs at the physiological stricture of the esophagus. The aortic arch eminence is the second physiological stricture. If the FB penetrates the esophageal wall, a life-threatening aortoesophageal fistula can develop. Therefore, it is better to consult a thoracic surgeon prior to endoscopic removal.

  18. MR imaging of the body

    Energy Technology Data Exchange (ETDEWEB)

    Rummeny, Ernst J. [Rechts der Isar Hospital, TU Muenchen (Germany). Dept. of Radiology; Reimer, Peter [Karlsruhe Municipal Hospital (Germany). Dept. of Radiology; Heindel, Walter [Muenster Univ. Hospital (Germany). Dept. of Clinical Radiology

    2009-07-01

    Since magnetic resonance imaging (MRI) was first introduced into clinical medicine more than 25 years ago, tremendous advances have been made both in the technology and in the clinical applications of the method, particularly during the last 10 years. MRI is now a core imaging modality and represents an extremely effective method of diagnosing various diseases in every region of the body. The advances made in recent years have optimized techniques for examining the chest and heart, abdominal organs, urogenital system, and musculoskeletal system. Higher magnetic fields and total body examinations are becoming clinical realities. In view of these dynamic developments, there is, of course, a need for continuous learning. The present volume provides systematic coverage of the various disease entities that can be identified on MRI, with clearly organized tables and charts listing the details of examination strategies at a glance. Along with the outstanding illustrations, the book offers a conceptual framework for everyday use. This book may help experienced colleagues, as well as residents and fellows, to understand the physical basis for MRI, and it may be able to guide them not only in the correct choice of techniques, but also in the appropriate and rational use of contrast media. MRI has a bright future in clinical diagnosis and scientific research, and this book provides an excellent reflection of the current state of the specialty.

  19. Sublegislative regulatory systems and bodies

    International Nuclear Information System (INIS)

    The author discusses the character of the legal regulatory systems with a view to the relationship between risk and evaluation, puts the current regulatory instruments for control of technological risks into the context of the national constitutional law and then discusses the legal bodies authorised to make technical standards for application in the field of nuclear law. The legal requirements and obligations concerning the bodies' types of organisation and their working procedures are subsequently used to develop the criteria for an assessment of the suggested reform of the Atomic Energy Act. The author's conclusion is that the draft reform fails to comply with the standards and criteria developed by the author. In the field of law under review, which is characterized by a close concatenation of scientific-technological knowledge and legal control and thus is the crucial 'test bed' for the development of a modern law for environmental protection, there are developments to be stated leading to the right direction. But the draft does not keep what the labels sticked to it by the Government promise: The draft does not create 'a modern law for advanced safety of nuclear installations', nor does it contribute substantially to 'reaching an all party consensus about the peaceful uses of atomic energy'. (orig./HP)

  20. Pseudo force acting between bodies

    Science.gov (United States)

    Baruah, Abhinav Ray; Deva, Anish; Sarma, Arun

    It has been shown that a non-contact force acts between two macroscopic physical objects held close together, which is not associated with the gravitational and electrostatic force. An experiment was conducted with objects of different mass, material and geometry to find the magnitude and properties of this apparent or pseudo force. The order of magnitude was found to be 10-5 and it remained constant for all types of objects while only the coefficient increased as the distance between the objects reduced. It only started acting at small distances and failed to make a body move if it experienced static friction from any contact surface. The nature of the force was found to be attractive as well as repulsive. Due to gravitation being a solely attractive force, it was eliminated as a possible reason for the pseudo force. The experiment was performed twice, once by grounding the apparatus and then again without grounding. The order of the force remained the same for both cases. As the test objects were held by hand, they were grounded through the human body. Also, none of the objects used were in contact with each other for the duration of this work, preventing any contact electrification. Due to these factors, the force was not considered electrostatic in nature.

  1. Human whole body cold adaptation.

    Science.gov (United States)

    Daanen, Hein A M; Van Marken Lichtenbelt, Wouter D

    2016-01-01

    Reviews on whole body human cold adaptation generally do not distinguish between population studies and dedicated acclimation studies, leading to confusing results. Population studies show that indigenous black Africans have reduced shivering thermogenesis in the cold and poor cold induced vasodilation in fingers and toes compared to Caucasians and Inuit. About 40,000 y after humans left Africa, natives in cold terrestrial areas seems to have developed not only behavioral adaptations, but also physiological adaptations to cold. Dedicated studies show that repeated whole body exposure of individual volunteers, mainly Caucasians, to severe cold results in reduced cold sensation but no major physiological changes. Repeated cold water immersion seems to slightly reduce metabolic heat production, while repeated exposure to milder cold conditions shows some increase in metabolic heat production, in particular non-shivering thermogenesis. In conclusion, human cold adaptation in the form of increased metabolism and insulation seems to have occurred during recent evolution in populations, but cannot be developed during a lifetime in cold conditions as encountered in temperate and arctic regions. Therefore, we mainly depend on our behavioral skills to live in and survive the cold. PMID:27227100

  2. Body Surface Area Prediction in Odorrana grahami

    Institute of Scientific and Technical Information of China (English)

    Guiying CHEN; Jiongyu LIU; Qiang DAI; Jianping JIANG

    2014-01-01

    Body surface area (BSA) was regarded as a more readily quantiifable parameter relative to body mass in the normalization of comparative biochemistry and physiology. The BSA prediction has attracted unceasing research back more than a century on animals, especially on humans and rats. Few studies in this area for anurans were reported, and the equation for body surface area (S) and body mass (W):S=9.9 W 0.56, which was concluded from toads of four species in 1969, was generally adopted to estimate the body surface areas for anurans until recent years. However, this equation was not applicable to Odorrana grahami. The relationship between body surface area and body mass for this species was established as:S=15.4 W 0.579. Our current results suggest estimation equations should be used cautiously across different species and body surface area predictions on more species need to be conducted.

  3. Genetics Home Reference: inclusion body myopathy 2

    Science.gov (United States)

    ... inclusion body myopathy: the Middle Eastern genetic cluster. Neurology. 2003 May 13;60(9):1519-23. Citation ... vacuoles is allelic to hereditary inclusion body myopathy. Neurology. 2002 Dec 10;59(11):1689-93. Citation ...

  4. Assessing Body Condition from Fat on Carcass

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — SOP guiding assessment of body condition based on carcass fat. Provides stepwise instructions and photos on how to assess body condition from carcass fat

  5. Body Contouring After Major Weight Loss

    Science.gov (United States)

    ... Blog Plastic Surgery Statistics ASPS TV News Program History of Plastic Surgery For Medical Professionals ... Major Weight Loss Body Contouring After Major Weight Loss For Men and Women Body contouring following major weight loss improves the ...

  6. Body Characteristics, Dietary Protein and Body Weight Regulation

    DEFF Research Database (Denmark)

    Ankarfeldt, Mikkel Zøllner; Ängquist, Lars; Stocks, Tanja;

    2014-01-01

    BACKGROUND/OBJECTIVES: Physiological evidence indicates that high-protein diets reduce caloric intake and increase thermogenic response, which may prevent weight gain and regain after weight loss. Clinical trials have shown such effects, whereas observational cohort studies suggest an association...... between greater protein intake and weight gain. In both types of studies the results are based on average weight changes, and show considerable diversity in both directions. This study investigates whether the discrepancy in the evidence could be due to recruitment of overweight and obese individuals......, and body characteristics. Different subsets of the DCH-participants, comparable with the trial participants, were analyzed for weight maintenance according to the randomization status (high or low protein) of the matched trial participants. RESULTS: Trial participants were generally heavier, had larger...

  7. Two-body and three-body halo nuclei

    Institute of Scientific and Technical Information of China (English)

    刘祖华; 张焕乔

    2003-01-01

    We have extracted the nuclear asymptotic normalization coefficients (ANC) for the virtual transitions B→A+N via some transfer reactions and the radioactive nuclear beam experiments. With these coefficients, root-mean-square (rms) radii for the valence particle in some possible halo nuclei have been calculated. The values of rms radii extracted with ANC approach are nearly model-independent, hence are a good quantity for the investigation of nuclear halo. In addition, we have also calculated the rms radii for the two valence neutrons in some three-body systems in terms of the relationship between the radii of valence particle, core nucleus and nuclear matter. With two conditions for nuclear halo formation, we have examined these extracted rms radii. The results show that 11Be(1/2+, g.s), 12B(1-, 2.621 MeV), 13C(1/2+, 3.089 MeV), 14C(0-, 6.903 MeV), 14C(1-, 6.094 MeV), 15C(1/2+, g.s) and 19C(1/2+, g.s) with the valence particle in the 2s ground or excited state are the neutron halo nuclei, whereas 17F(1/2+, 0.495 MeV) and 21Na(1/2+, 2.423 MeV) are the proton halo nuclei in the excited state. For three-body systems, except the well-established two-neutron halo nuclei 6He and 11Li, 14Be and 17B might be the two-neutron halo nuclei as well.

  8. Body perception and evaluation in anorexia nervosa

    OpenAIRE

    Lutz, Annika

    2015-01-01

    Body image disturbance is a prominent feature in anorexia nervosa (AN) and encompasses alterations across the different dimensions of body image, that is, perception, affect, cognition, and behaviour. There is a wealth of research regarding the subjective experience of body image disturbance and evidence for underlying neuronal alterations is beginning to emerge. The present project was designed to assess basic processes underlying body image disturbance with the help of psychophysiological m...

  9. Fun with ultracold few-body systems

    Science.gov (United States)

    Blume, Doerte

    2016-05-01

    Few-body physics has played a pivotal role in quantum mechanics from the very beginning. Prime examples include the helium atom and molecular hydrogen. The realization of ultracold atoms has opened up new avenues for exploring few-body quantum mechanics. Three-body processes, for example, are instrumental in understanding the stability of large ultracold atomic samples. This talk will summarize recent theoretical and experimental ultracold few-body studies. The talk will conclude with a list of open questions.

  10. L_p-mixed intersection bodies

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    In this paper the author first introduce a new concept of Lp-dual mixed volumes of star bodies which extends the classical dual mixed volumes. Moreover, we extend the notions of Lp- intersection body to Lp-mixed intersection body. Inequalities for Lp-dual mixed volumes of Lp-mixed intersection bodies are established and the results established here provide new estimates for these type of inequalities.

  11. Fractured identities: injury and the balletic body

    OpenAIRE

    Wainwright, Steven P.; Williams, Clare; Turner, Bryan S.

    2005-01-01

    Abstract Social worlds shape human bodies and so it is inevitable that there are strong relationships between the body, professional dance and identity. In this article we draw on Bourdieu?s notions of habitus, and various forms of capital, as the main theoretical framework for our discussion. Our ethnography of the balletic body elicited dancers and ex-dancers? perceptions of their bodies and ...

  12. The basal bodies of Chlamydomonas reinhardtii

    OpenAIRE

    Dutcher, Susan K.; O’Toole, Eileen T.

    2016-01-01

    The unicellular green alga, Chlamydomonas reinhardtii, is a biflagellated cell that can swim or glide. C. reinhardtii cells are amenable to genetic, biochemical, proteomic, and microscopic analysis of its basal bodies. The basal bodies contain triplet microtubules and a well-ordered transition zone. Both the mother and daughter basal bodies assemble flagella. Many of the proteins found in other basal body-containing organisms are present in the Chlamydomonas genome, and mutants in these genes...

  13. Characterizing Body Image in Youth with HIV.

    Science.gov (United States)

    Wilkins, Megan L; Dallas, Ronald H; Porter, Jerlym S; Tang, Li; Sun, Yilun; Magdovitz-Frankfurt, Paige; Gaur, Aditya H

    2016-08-01

    Emerging research in adults with HIV suggests negative body image may be found at a higher rate in this group. To date, few studies have examined body image in adolescents living with HIV. This exploratory study aimed to characterize body image perceptions among youth living with HIV. Adolescents (n = 143; age range 16-24 years; 69 % male) completed an Audio Computer Assisted Self-Interview Questionnaire that assessed body image, psychosocial, medical and sociodemographic information. Medical history and physical functioning information were abstracted from medical records. Results showed normative global body image on the Multidimensional Body Self-Relations Questionnaire-Appearance Scales. Some subscale elevations were observed; including decreased interest in self-care and appearance, as well as concerns with individual body areas. Overall, youth reported preference for own body shape on the Figure Rating Scale; however, 41 % of youth classified as "overweight" per CDC body mass index reported contentment with current body size. Further, 47 % of youth classified as "normal" weight desired to have larger body size. Youth identified as men who have sex with men most often reported desiring larger body size. Implications for clinical care are discussed. PMID:26721247

  14. Asymptomatic body packers should be treated conservatively

    DEFF Research Database (Denmark)

    Glovinski, Peter V; Lauritsen, Morten L; Bay-Nielsen, Morten;

    2013-01-01

    Body packing takes advantage of the human storage capacity within the alimentary tract. Body packing is used for the smuggling of drugs such as heroin, cocaine, amphetamine, hashish and ecstasy. Most body packers are asymptomatic. However, packets may rupture or obstruct the alimentary tract...

  15. Body Image Satisfaction in Turkish Adolescents.

    Science.gov (United States)

    Cok, Figen

    1990-01-01

    Examined body image satisfaction in Turkish adolescents. Findings from 269 female and 286 male secondary school students revealed that males were more satisfied with their bodies than were females, early-maturing males and late-maturing females had higher levels of body image satisfaction, and participants in physical activities were more…

  16. A Brief Introduction on Body Language

    Institute of Scientific and Technical Information of China (English)

    王颖

    2008-01-01

    Body language is an important part of nonverbal communication and it is connected with culture. This article devotes to a comparison and contrast of body language in different cultures which aims to illustrate the differences and similarities of body language so as to achieve efficient communication.

  17. The Slender Imbalance: Women and Body Image.

    Science.gov (United States)

    McBride, Leslie G.

    1985-01-01

    Identifies sociocultural factors contributing to the current emphasis on thinness, examines the negative impact this has had on women's body image, identifies major risk factors in the development of negative body image, and presents focus issues and related strategies designed to enhance body image and prevent development of related problems.…

  18. The Dimensionality of Body Image Disturbance.

    Science.gov (United States)

    Galgan, Richard J.; And Others

    1987-01-01

    Examined personality variables in 75 male and 75 female college students. Found two dimensions underlying body image disturbance variables, one loading on body image dissatisfaction and one loading on body image disturbance. Low negative correlation between two factors suggests that distortion and dissatisfaction are fairly distinct and that body…

  19. The Meanings and Application of Body Language

    Institute of Scientific and Technical Information of China (English)

    YaoShang-lian; LiLi-na; LiHua

    2003-01-01

    As the society is developing,people communicate more and more fiequently,therefore,the massages interpreted by body language become more and more important in human communication.What's more,body language becomes increasingly crucial in teaching and learning.Thus,it is necessary to study body language in order to develop human communication skills.

  20. Sexual Abuse and Body Image Distortion.

    Science.gov (United States)

    Byram, Victoria; And Others

    1995-01-01

    Female undergraduates (n=100) were surveyed concerning body percept and past experience with sexual abuse. Body size overestimation was greater in noneating-disordered women who had relatively unhealthy eating attitudes. Overall findings suggested that age at time of abuse and body image are only associated where there is a degree of eating…

  1. ANALYSIS OF MODERN CAR BODY STRAIGHTENING METHODS

    Directory of Open Access Journals (Sweden)

    Arhun, Sch.

    2013-01-01

    Full Text Available The analysis of modern car body panels straightening methods is carried out. There have been described both traditional and alternative methods of car body panels straightening. The urgency of magnetic pulse teсhnology dignment is grounded. The main advantages of magnetic pulse teсhno-logy of car body straightening are defernined.

  2. Body Image and Self-Esteem

    Science.gov (United States)

    ... Help a Friend Who Cuts? Body Image and Self-Esteem KidsHealth > For Teens > Body Image and Self-Esteem ... really bring down your self-esteem . Why Are Self-Esteem and Body Image Important? Self-esteem is all ...

  3. Application of Body Language in Primary Class

    Institute of Scientific and Technical Information of China (English)

    张宁宁

    2011-01-01

    Body language is an essential medium for people to communicate in their daily life. The use of body language has positive effects on teachers' teaching and on students' learning as well, so we strongly advocate teachers to integrate body language into primary class skilfully.

  4. Body Mass Index (BMI) Charts (For Parents)

    Science.gov (United States)

    ... 5 Things to Know About Zika & Pregnancy Body Mass Index (BMI) Charts KidsHealth > For Parents > Body Mass Index (BMI) Charts Print A A A Text ... same age. Now they have another tool: body mass index (BMI). BMI is a calculation that uses ...

  5. Palestra e identità: fra body building, body social building e body building society

    Directory of Open Access Journals (Sweden)

    LASTRICO, Valerio

    2016-06-01

    Full Text Available This paper presents the results of an ethnographic research conducted in a bodybuilding gym where the author was working out. The analysis focuses on those who, according to the data gathered through participant observation, are identified as “real bodybuilders” namely: those who put their “ideal body” reference as a totalizing element of their identity. The aim of the research is to show how such individuals, once they have chosen an ideal body model – a model which is not hegemonic within society as whole – use it as a frame for almost all their cognitive representations and social interactions (gender, leadership, rituals, world classification and so on. It is mainly the body to provide a means of identification to this competitive subculture which is quite cohesive in terms of lifestyles and it also provides a means of individuation through its particular construction as well as presumed authority in terms of expertise readable as a form of power/knowledge.

  6. Skeletal and body composition evaluation

    Science.gov (United States)

    Mazess, R. B.

    1983-01-01

    Research on radiation detectors for absorptiometry; analysis of errors affective single photon absorptiometry and development of instrumentation; analysis of errors affecting dual photon absorptiometry and development of instrumentation; comparison of skeletal measurements with other techniques; cooperation with NASA projects for skeletal evaluation in spaceflight (Experiment MO-78) and in laboratory studies with immobilized animals; studies of postmenopausal osteoporosis; organization of scientific meetings and workshops on absorptiometric measurement; and development of instrumentation for measurement of fluid shifts in the human body were performed. Instrumentation was developed that allows accurate and precise (2% error) measurements of mineral content in compact and trabecular bone and of the total skeleton. Instrumentation was also developed to measure fluid shifts in the extremities. Radiation exposure with those procedures is low (2-10 MREM). One hundred seventy three technical reports and one hundred and four published papers of studies from the University of Wisconsin Bone Mineral Lab are listed.

  7. Fitness Doping and Body Management

    DEFF Research Database (Denmark)

    Thualagant, Nicole

    specifically in a sport-for-all context. It is questioned whether the anti-doping policy contradicts some of the national sport-for-all organisation, DGI’s values of fostering fellowship, challenge and health. Last but not least, this thesis examines in a third paper the bodywork of the users’ of the club......This PhD thesis examines in a first paper the conceptualization of fitness doping and its current limitations. Based on a review of studies on bodywork and fitness doping it is emphasised that the definition of doping does not provide insights into bodywork of both men and women. Moreover......-based fitness centres. Based on a survey in ten Danish club-based fitness centres and on narratives from semi-structured interviews, it is highlighted that the objectives of bodywork differ according to the users’ age and gender. Two different ways of investing in the body are explored in the paper, namely...

  8. [BODIES ARTIFACTS AND ANATOMICAL MODELS].

    Science.gov (United States)

    Aruta, Alessandro

    2015-01-01

    Through three different museological approaches, diachronically arranged, the essay intends to introduce some pertinent questions related to the topic of the conference "Bodies and Anatomy: the corpses in the museums from Ruysch to Von Hagens. The first item analyzes a recent line of British museological studies, treating mainly medical British museums of the XVIII and XIX century, with intriguing developments arriving up to nowadays. A second point illustrates several aspects with regards to the donation and the arrangement of the morbid specimina Luigi Gedda collection, coming from the CSS Mendel of Rome to the Museum of Pathological Anatomy of Sapienza University of Rome. Finally, in a crossover between the previous points, it will be presented some recent studies regarding the employment of new communication technologies in the scientific and medical museology. PMID:26946593

  9. [BODIES ARTIFACTS AND ANATOMICAL MODELS].

    Science.gov (United States)

    Aruta, Alessandro

    2015-01-01

    Through three different museological approaches, diachronically arranged, the essay intends to introduce some pertinent questions related to the topic of the conference "Bodies and Anatomy: the corpses in the museums from Ruysch to Von Hagens. The first item analyzes a recent line of British museological studies, treating mainly medical British museums of the XVIII and XIX century, with intriguing developments arriving up to nowadays. A second point illustrates several aspects with regards to the donation and the arrangement of the morbid specimina Luigi Gedda collection, coming from the CSS Mendel of Rome to the Museum of Pathological Anatomy of Sapienza University of Rome. Finally, in a crossover between the previous points, it will be presented some recent studies regarding the employment of new communication technologies in the scientific and medical museology.

  10. Dosimetry of total body irradiation

    International Nuclear Information System (INIS)

    In the treatment of disseminated malignancies an improvement in the curability and reduction of complication rates require high precision total body irradiation (TBI) and correct reporting of relevant treatment parameters. Optimal TBI dosimetry is the basis. Radiooncological and radiobiological requirements as well as the special physical situation have to be considered. To review the efforts of medical physicists, highlights from TBI workshops and publications are summarized. Additionally, dosimetric data from 34 European radiooncological centres contributing to the recent ESTRO inquiry on TBI are analysed. The topics are: absorbed dose and dose monitor calibration, determination of absolute and relative doses, dose ratios, attenuation data and heterogeneity corrections; TBI dose calculation methods regarding patient position, beam incidence, body shape and thickness, lung size and density; methods of TBI treatment planning including calculated dose modification and of TBI quality assurance. In conclusion, the following recommendations can be given: TBI dosimetry shall be performed under TBI conditions, close to the real treatment situation. The absorbed dose to water must be determined. The dose monitor should be calibrated against dose measurements at the centre of a water equivalent phantom of TBI equivalent size and typical thickness. Photon fluence profiles have to be measured with small phantoms. Influences on the local dose must be investigated systematically. A reproducible AP/PA TBI technique should be used. The TBI dose shall be specified to mid-abdomen and reported in units of gray. The single and total dose and the dose rate to the lungs, the number of fractions and the treatment time schedule must be stated. In vivo dosimetry is required if non-reliable TBI techniques are used. An international TBI dosimetry intercomparison could assist these efforts to improve the treatment of acute leukaemia. (author). 89 refs, 3 figs, 13 tabs

  11. Inclusion body myositis: therapeutic approaches

    Directory of Open Access Journals (Sweden)

    Aggarwal R

    2012-05-01

    Full Text Available Rohit Aggarwal, Chester V OddisDepartment of Medicine, University of Pittsburgh, Pittsburgh, PA, USAAbstract: The idiopathic inflammatory myopathies are a heterogeneous group of diseases that include dermatomyositis (DM, polymyositis (PM, inclusion body myositis (IBM and other less common myopathies. These are clinically and histopathologically distinct diseases with many shared clinical features. IBM, the most commonly acquired inflammatory muscle disease occurs in individuals aged over 50 years, and is characterized by slowly progressive muscle weakness and atrophy affecting proximal and distal muscle groups, often asymmetrically. Unlike DM and PM, IBM is typically refractory to immunotherapy. Although corticosteroids have not been tested in randomized controlled trials, the general consensus is that they are not efficacious. There is some suggestion that intravenous immunoglobulin slows disease progression, but its long-term effectiveness is unclear. The evidence for other immunosuppressive therapies has been derived mainly from case reports and open studies and the results are discouraging. Only a few clinical trials have been conducted on IBM, making it difficult to provide clear recommendations for treatment. Moreover, IBM is a slowly progressive disease so assessment of treatment efficacy is problematic due to the longer-duration trials needed to determine treatment effects. Newer therapies may be promising, but further investigation to document efficacy would be expensive given the aforementioned need for longer trials. In this review, various treatments that have been employed in IBM will be discussed even though none of the interventions has sufficient evidence to support its routine use.Keywords: inclusion body myositis, clinical features, treatment

  12. Body image and media use among adolescents.

    Science.gov (United States)

    Borzekowski, Dina L G; Bayer, Angela M

    2005-06-01

    This article reviews the literature on body image and media use among adolescents. We begin by defining body image and how it is constructed, especially among young people. We then offer information on when one's body image perception is askew with one's perception of personal ideal, which can result in disordered eating, including obesity, anorexia, and bulimia. Next, we describe the research literature on media use and its relationship to adolescents' body image perceptions and discuss content analyses and correlational, experimental, and qualitative studies. Lastly, we recommend, beyond conducting further and improved research studies, interventions and policies that may have an impact on body image and media use.

  13. Unusual Foreign Body of Pancreas: Surgical Management

    Directory of Open Access Journals (Sweden)

    Thakur Deen Yadav

    2013-11-01

    Full Text Available Context The foreign ingestion is common occurrence but migration to pancreas is rare entity. Most of foreign bodies passspontaneously through the anus but about 1% can perforate the wall of stomach or duodenum to reach solid organ.Pancreatic foreign body can results in fatal complication. Pancreatic foreign body can be removed endoscopically orsurgically. Case report We are reporting a case of successful removal of pancreatic foreign body (sewing needle by surgery. Conclusion Pancreatic foreign body is a uncommon entity and surgical removal is warranted in majority of cases.

  14. Nutritional assessment with body composition measurements

    International Nuclear Information System (INIS)

    The measurement of body composition by multiple isotope dilution provides an accurate and precise measure of both the nutritional state and the response to nutritional support. A multiple isotope dilution technique has been developed that permits measurement of the three major components of body composition: body fat, extracellular mass (ECM), and body cell mass (BCM). Normal body composition was defined by data obtained in 25 healthy volunteers. Malnutrition is characterized by a loss of BCM and an expansion of the ECM, and as a result the lean body mass is not significantly different from normal. The loss of body weight with malnutrition therefore often reflects the loss of body fat. The utility of body composition measurements was demonstrated by determining the effect of total parenteral nutrition on body composition to determine the relationship between caloric intake and the change in the BCM. A statistically significant relationship was developed which demonstrated that a caloric intake in the range of 30-40 cal/kg/day is required for maintenance. To restore a depleted or malnourished BCM requires a caloric intake in excess of that required for maintenance. The measurement of body composition by multiple isotope dilution is complex and time consuming, and requires specialized laboratory facilities and specially trained personnel. As a result, these measurements are not suited for routine patient management, but should rather be reserved for research purposes

  15. Body Composition at 3-years of Age

    DEFF Research Database (Denmark)

    Ejlerskov, Katrine Tschentscher

    Background: Birth weight and high weight gain the first years of life is associated with later body composition and increased risk of obesity. A detailed description of body composition at 3 years of age and factors related to the distribution of fat and fat-free mass is interesting, since body......D study was to look at which factors were related to body composition at 3 years of age with a special focus on factors related to later obesity risk. A methodological objective was to be able to predict body composition by using bioelectrical impedance and anthropometry. Secondly, an objective...... was to identify growth periods with relation to body composition at 3 years and whether the impact of growth was modified by nutrition. A third objective was to examine the relation between IGF-I levels at 9 and 36 months and body composition at 3 years. Since the IGF-I level was expected to be affected...

  16. The basal bodies of Chlamydomonas reinhardtii.

    Science.gov (United States)

    Dutcher, Susan K; O'Toole, Eileen T

    2016-01-01

    The unicellular green alga, Chlamydomonas reinhardtii, is a biflagellated cell that can swim or glide. C. reinhardtii cells are amenable to genetic, biochemical, proteomic, and microscopic analysis of its basal bodies. The basal bodies contain triplet microtubules and a well-ordered transition zone. Both the mother and daughter basal bodies assemble flagella. Many of the proteins found in other basal body-containing organisms are present in the Chlamydomonas genome, and mutants in these genes affect the assembly of basal bodies. Electron microscopic analysis shows that basal body duplication is site-specific and this may be important for the proper duplication and spatial organization of these organelles. Chlamydomonas is an excellent model for the study of basal bodies as well as the transition zone. PMID:27252853

  17. Chaos in body-vortex interactions

    DEFF Research Database (Denmark)

    Pedersen, Johan Rønby; Aref, Hassan

    2010-01-01

    The model of body–vortex interactions, where the fluid flow is planar, ideal and unbounded, and the vortex is a point vortex, is studied. The body may have a constant circulation around it. The governing equations for the general case of a freely moving body of arbitrary shape and mass density...... of a circle is integrable. As the body is made slightly elliptic, a chaotic region grows from an unstable relative equilibrium of the circle-vortex case. The case of a cylindrical body of any shape moving in fluid otherwise at rest is also integrable. A second transition to chaos arises from the limit between...... and an arbitrary number of point vortices are presented. The case of a body and a single vortex is then investigated numerically in detail. In this paper, the body is a homogeneous, elliptical cylinder. For large body–vortex separations, the system behaves much like a vortex pair regardless of body shape. The case...

  18. Oil Body Biogenesis during Brassica napus Embryogenesis

    Institute of Scientific and Technical Information of China (English)

    Yu-Qing He; Yan Wu

    2009-01-01

    Although the oil body is known to be an important membrane enclosed compartment for oil storage in seeds, we have little understanding about its biogenesis during embryogenesis. In the present study we investigated the oil body emergence and variations in Brassica napus cv. Topas. The results demonstrate that the oil bodies could be detected already at the heart stage, at the same time as the embryos began to tum green, and the starch grains accumulated in the chloroplast stroma. In comparison, we have studied the development of oil bodies between Arabidopsis thaliana wild type (Col) and the low-seed-oil mutant wrinkled1-3. We observed that the oil body development in the embryos of Col is similar to that of B. napus cv. Topas, and that the size of the oil bodies was obviously smaller in the embryos of wrinkled1-3. Our results suggest that the oil body biogenesis might be coupled with the embryo chloroplast.

  19. Over my fake body: body ownership illusions for studying the multisensory basis of own-body perception

    Directory of Open Access Journals (Sweden)

    Konstantina eKilteni

    2015-03-01

    Full Text Available Which is my body and how do I distinguish it from the bodies of others, or from objects in the surrounding environment? The perception of our own body and more particularly our sense of body ownership is taken for granted. Nevertheless experimental findings from body ownership illusions (BOIs, show that under specific multisensory conditions, we can experience artificial body parts or fake bodies as our own body parts or body respectively. The aim of the present paper is to discuss how and why BOIs are induced. We review several experimental findings concerning the spatial, temporal and semantic principles of crossmodal stimuli that have been applied to induce BOIs. On the basis of these principles, we discuss theoretical approaches concerning the underlying mechanism of BOIs. We propose a conceptualization based on Bayesian causal inference for addressing how our nervous system could infer whether an object belongs to our own body, using multisensory, sensorimotor and semantic information, and we discuss how this can account for several experimental findings. Finally, we point to neural network models as an implementational framework within which the computational problem behind BOIs could be addressed in the future.

  20. The Body and the Beautiful: Health, Attractiveness and Body Composition in Men’s and Women’s Bodies

    Science.gov (United States)

    Brierley, Mary-Ellen; Brooks, Kevin R.; Mond, Jonathan; Stevenson, Richard J.

    2016-01-01

    The dominant evolutionary theory of physical attraction posits that attractiveness reflects physiological health, and attraction is a mechanism for identifying a healthy mate. Previous studies have found that perceptions of the healthiest body mass index (weight scaled for height; BMI) for women are close to healthy BMI guidelines, while the most attractive BMI is significantly lower, possibly pointing to an influence of sociocultural factors in determining attractive BMI. However, less is known about ideal body size for men. Further, research has not addressed the role of body fat and muscle, which have distinct relationships with health and are conflated in BMI, in determining perceived health and attractiveness. Here, we hypothesised that, if attractiveness reflects physiological health, the most attractive and healthy appearing body composition should be in line with physiologically healthy body composition. Thirty female and 33 male observers were instructed to manipulate 15 female and 15 male body images in terms of their fat and muscle to optimise perceived health and, separately, attractiveness. Observers were unaware that they were manipulating the muscle and fat content of bodies. The most attractive apparent fat mass for female bodies was significantly lower than the healthiest appearing fat mass (and was lower than the physiologically healthy range), with no significant difference for muscle mass. The optimal fat and muscle mass for men’s bodies was in line with the healthy range. Male observers preferred a significantly lower overall male body mass than did female observers. While the body fat and muscle associated with healthy and attractive appearance is broadly in line with physiologically healthy values, deviations from this pattern suggest that future research should examine a possible role for internalization of body ideals in influencing perceptions of attractive body composition, particularly in women. PMID:27257677

  1. Visual Coding of Human Bodies: Perceptual Aftereffects Reveal Norm-Based, Opponent Coding of Body Identity

    Science.gov (United States)

    Rhodes, Gillian; Jeffery, Linda; Boeing, Alexandra; Calder, Andrew J.

    2013-01-01

    Despite the discovery of body-selective neural areas in occipitotemporal cortex, little is known about how bodies are visually coded. We used perceptual adaptation to determine how body identity is coded. Brief exposure to a body (e.g., anti-Rose) biased perception toward an identity with opposite properties (Rose). Moreover, the size of this…

  2. Progress in Body-Worn Antennas for On-Body Propagation (invited)

    DEFF Research Database (Denmark)

    Jakobsen, Kaj Bjarne

    2016-01-01

    On-body propagation and on-body antennas for body-centric wireless communications are presented. The onbody communications rely on creeping waves launched and received by the antennas, respectively. Path gain and bandwidth at 2.4 GHz for different types of body-worn antennas for head-centric comm...

  3. The Relationships among Body Image, Body Mass Index, Exercise, and Sexual Functioning in Heterosexual Women

    Science.gov (United States)

    Weaver, Angela D.; Byers, E. Sandra

    2006-01-01

    Problems related to negative body image are very common among young women. In this study, we examined the relationship between women's body image and their sexual functioning over and above the effects of physical exercise and body mass index (BMI) in a sample of 214 university women. Low situational body image dysphoria and low body…

  4. Dead bodies matter: Gift giving and the unveiling of body donor monuments in the Netherlands

    NARCIS (Netherlands)

    Bolt, S.H.

    2012-01-01

    Body donors are people who voluntarily donate their entire body, after death, to anatomical science. Based on anthropological fieldwork in the Netherlands this article explores the construction of body donor monuments since 2007. These developments are analyzed by means of gift-giving theories. Body

  5. It's All in Your Head: Why Is the Body Inversion Effect Abolished for Headless Bodies?

    Science.gov (United States)

    Yovel, Galit; Pelc, Tatiana; Lubetzky, Ida

    2010-01-01

    It has been recently argued that human bodies are processed by a specialized processing mechanism. Central evidence was that body inversion reduces recognition abilities (body inversion effect; BIE) as much as it does for faces, but more than for other objects. Here we showed that the BIE is markedly reduced for headless bodies and examined the…

  6. Body weight in relation to variation in body size of Oystercatchers Haematopus ostralegus

    NARCIS (Netherlands)

    Zwarts, L; Hulscher, JB; Koopman, K; Zegers, PM

    1996-01-01

    This paper analyses the relationships between body weight in the Oystercatcher and two measures of its body size, bill length and wing length. The weight variation between individuals due to differences in body size is nearly as large as the seasonal variation in body weight within individuals. Wing

  7. A computer-graphic technique for the study of body size perception and body types.

    Science.gov (United States)

    Benson, P J; Emery, J L; Cohen-Tovée, E M; Tovée, M J

    1999-08-01

    We present a novel approach for measuring body size estimation in normal and eating-disordered women and men. Clinical categories of body types were used as prototypes. By comparing the subjective appearance of a person's body with prototypes, we can understand how different attributes of his or her body shape contribute to perception of body size. After lifelike random distortions have been applied to parts of their body image, individuals adjust their body shapes until they converge on their perceived veridical appearance. Exaggeration and minimization of particular body areas measured with respect to their true shape and with different prototypes can be expressed as numerical deviations. In this way, perceived body size and body attractiveness can be appraised during the course of diagnosis and treatment of eating disorders. PMID:10502868

  8. Negative Body Image Associated with Changes in the Visual Body Appearance Increases Pain Perception

    OpenAIRE

    Michihiro Osumi; Ryota Imai; Kozo Ueta; Satoshi Nobusako; Shu Morioka

    2014-01-01

    Changing the visual body appearance by use of as virtual reality system, funny mirror, or binocular glasses has been reported to be helpful in rehabilitation of pain. However, there are interindividual differences in the analgesic effect of changing the visual body image. We hypothesized that a negative body image associated with changing the visual body appearance causes interindividual differences in the analgesic effect although the relationship between the visual body appearance and analg...

  9. Bodies of Science and Law: Forensic DNA Profiling, Biological Bodies, and Biopower

    OpenAIRE

    Toom, Victor

    2012-01-01

    How is jurisdiction transferred from an individual's biological body to agents of power such as the police, public prosecutor and judiciary, and what happens to these biological bodies when transformed from private into public objects? These questions are examined by analyzing bodies situated at the intersection of science and law. More specifically, the transformation of 'private bodies' into 'public bodies' shall be analyzed by going into the details of forensic DNA profiling in the Dutch j...

  10. Association of body surface area and body composition with heart structural characteristics of female swimmers

    OpenAIRE

    SHEIKHSARAF, BAHAREH; ALLAH, NIKBAKHT HOJAT; ALI, AZARBAYJANI MOHAMMAD

    2010-01-01

    In healthy nonathletic populations, some left ventricle (LV) parameters such as LV mass (LVM) and LV end diastolic dimension (LVEDD) can be predicted by some of body size parameters such as body surface area (BSA), fat-free mass (FFM), and height (H). These body size parameters use to remove covariate influence of body size from cardiac dimension variables and allow comparisons to be made between individuals and groups of different body size. Endurance exercise has been associated with change...

  11. Can body volume be determined by PET?

    Energy Technology Data Exchange (ETDEWEB)

    Hentschel, Michael; Paul, Dominik; Mix, Michael; Moser, Ernst; Brink, Ingo [University Hospital Freiburg, Division of Nuclear Medicine, Section of Positron Emission Tomography, Freiburg (Germany); Korsten-Reck, Ulrike [University Hospital Freiburg, Division of Sports Medicine, Freiburg (Germany); Mueller, Frank [PET-Institute Rhein-Neckar, Ludwigshafen (Germany); Merk, Stefan [Kantonsspital Basel, Division of Nuclear Medicine, Basel (Switzerland)

    2005-04-01

    To avoid dependence on body weight, the standardised uptake value (SUV) in positron emission tomography (PET) can instead be normalised to the lean body mass (LBM), which can be determined from body volume and mass. This study was designed to answer the following questions: Firstly, can the total body volume in principle be determined using PET? Secondly, is the precision of this measurement comparable to that achieved using an established standard method. Ten patients were examined during oncological whole-body PET examinations. The whole-body volume of the patients was determined from the transmission scan in PET. Air displacement plethysmography with BOD POD was used for comparison as the standard method of volume determination. In all patients, the whole-body volumes could be determined using PET and the standard method. Bland and Altman [23] analysis for agreement between the volumes determined by the two methods (presentation of differences vs means) revealed a very small difference of -0.14 l. With a mean patient volume of 71.81{+-}15.93 l, the relative systematic error is only <0.1%. On this basis, equality of the volume values determined by the two methods can be assumed. PET can be used as a supplementary method for experimental determination of whole-body volume and total body fat in tumour patients. The fat content can be used to calculate the LBM and to determine body weight-independent SUVs (SUV{sub LBM}). (orig.)

  12. Body size prediction from juvenile skeletal remains.

    Science.gov (United States)

    Ruff, Christopher

    2007-05-01

    There are currently no methods for predicting body mass from juvenile skeletal remains and only a very limited number for predicting stature. In this study, stature and body mass prediction equations are generated for each year from 1 to 17 years of age using a subset of the Denver Growth Study sample, followed longitudinally (n = 20 individuals, 340 observations). Radiographic measurements of femoral distal metaphyseal and head breadth are used to predict body mass and long bone lengths are used to predict stature. In addition, pelvic bi-iliac breadth and long bone lengths are used to predict body mass in older adolescents. Relative prediction errors are equal to or smaller than those associated with similar adult estimation formulae. Body proportions change continuously throughout growth, necessitating age-specific formulae. Adult formulae overestimate stature and body mass in younger juveniles, but work well in 17-year-olds from the sample, indicating that in terms of body proportions they are representative of the general population. To illustrate use of the techniques, they are applied to the juvenile Homo erectus (ergaster) KNM-WT 15000 skeleton. New body mass and stature estimates for this specimen are similar to previous estimates derived using other methods. Body mass estimates range from 50 to 53 kg, and stature was probably slightly under 157 cm, although a precise stature estimate is difficult to determine due to differences in linear body proportions between KNM-WT 15000 and the Denver reference sample. PMID:17295297

  13. [Body height, body weight and body mass index of German military recruits. Historical retrospect and current status].

    Science.gov (United States)

    Jaeger, U; Zellner, K; Kromeyer-Hauschild, K; Lüdde, R; Eisele, R; Hebebrand, J

    2001-09-01

    Surveys of conscripts give a chance to pursue the somatic development and the nourishment situation of young men over long times. At the beginning a historical view is given of the organization and methodological basis of medical examinations of German recruits since the introduction of the general conscription at the beginning of the 19th century. Secular changes of the body height are sketched out for selected regions of Germany until the middle of the 20th century. Data of the body weight hardly exist for this time. Until now the greatest continuous documentation of data for body height and body weight is available for West Germany since 1957 and for East Germany between 1973 and the reunion in 1989. The body height of German conscripts has nearly permanently increased since 1957 and reached in 1994 a maximum with 180.0 cm. In general East German conscripts have body height data which are smaller on an average than those of West German conscripts. But in the last years a catch-up in body height could be seen. The body weight of German conscripts also shows an increase apart from some short-time exceptions. The data of West German conscripts are also higher than those of the East German conscripts. Until the reunion the West-East-differences could partly be due to the different mustering age. But the differences also continue in the nineties despite the now identical mustering age. The Body Mass Index (BMI) of the German conscripts (calculated from the average values of body height and body weight) is characterized by increments in the last years. This indicates greater changes in body weight than in body height. The BMI also shows marked West-East-differences. There is no uniform tendency in differences between urban and country side regions for body height and body weight. On the other hand until now differences between selected professional groups are existing. Especially the over-proportional increase of the number of conscripts in the higher body

  14. Atomic many-body theory

    Energy Technology Data Exchange (ETDEWEB)

    Lindgren, I.; Morrison, J.

    1982-01-01

    The unified description of atomic theory provided in this book bridges the gap between elementary books on quantum mechanics and present-day research in the field. Angular-momentum theory and the Hartree-Fock model are developed systematically and then applied to a number of physical problems. The treatment of many-body theory which then follows is based on a general form of the Rayleigh-Schroedinger perturbation theory, applicable to open-shell as well as closed-shell systems. The presentation in the book is based largely on graphical methods. Angular momentum graphs are used to represent the coupling between the spin and orbital angular momenta of the electrons, and the different terms in the perturbation expansion are expressed by means of 'Feynman-like' - or Goldstone - diagrams. These diagrams are evaluated using the angular-momentum graphs developed in the early part of the book. The formalism is applied to a number of problems in atomic physics, such as the electron-correlation energy, the electrostatic term structure and the spin-orbit and hyperfine interactions. The final chapter deals with the exp(S) or coupled-cluster formalism in the pair approximation, which appears to be the most promising approach for accurate calculations of the structure of real atomic and molecular systems.

  15. A Human Body Analysis System

    Directory of Open Access Journals (Sweden)

    Girondel Vincent

    2006-01-01

    Full Text Available This paper describes a system for human body analysis (segmentation, tracking, face/hands localisation, posture recognition from a single view that is fast and completely automatic. The system first extracts low-level data and uses part of the data for high-level interpretation. It can detect and track several persons even if they merge or are completely occluded by another person from the camera's point of view. For the high-level interpretation step, static posture recognition is performed using a belief theory-based classifier. The belief theory is considered here as a new approach for performing posture recognition and classification using imprecise and/or conflicting data. Four different static postures are considered: standing, sitting, squatting, and lying. The aim of this paper is to give a global view and an evaluation of the performances of the entire system and to describe in detail each of its processing steps, whereas our previous publications focused on a single part of the system. The efficiency and the limits of the system have been highlighted on a database of more than fifty video sequences where a dozen different individuals appear. This system allows real-time processing and aims at monitoring elderly people in video surveillance applications or at the mixing of real and virtual worlds in ambient intelligence systems.

  16. Whole-body computed tomography

    International Nuclear Information System (INIS)

    The textbook covers all aspects of the modern (spiral) CT methods: The technical principle, evaluation modalities and artefacts, specific diagnostic examinations such as CT angiography, CTAP, CT arthrography, CT-guided biopsy, as well as the principles guiding the analysis of the tomographic images are explained in the initial chapter on fundamentals. Further methodological information is given in the second chapter discussing the various examination strategies, and the value of the material is enhanced by a wealth of diagnostic image reproductions of latest available standard. The chapters devoted to the body organs of interest are arranged by organs and cover information on the normal anatomy, diagnostic examination techniques, contrast agent performance and, as a very important part, the full-detail CT morphology, supplemented by information describing the anatomy, pathophysiology and clinical aspects of relevance to the diagnostic decisions. There are as well many practical hints which readers may find useful in their practical work. Every chapter contains tables summarizing and showing at a glance information on indications, specific examination techniques, including the scan parameters for the spiral CT, and on differential diagnoses. (orig./CB)

  17. High tobacco consumption lowers body weight

    DEFF Research Database (Denmark)

    Winsløw, Ulrik C; Rode, Line; Nordestgaard, Børge G

    2015-01-01

    BACKGROUND: Conflicting evidence has been found regarding the association between high tobacco consumption and body weight among smokers. We tested the hypothesis that high tobacco consumption is causally associated with low body weight. METHODS: We conducted a Mendelian randomization study...... with a genetic variant in CHRNA3 (rs1051730) as proxy for high tobacco consumption. The cohort consisted of 80,342 participants from the Copenhagen General Population Study, with details on body weight, smoking habits and CHRNA3 genotype, including 15,220 current smokers. RESULTS: In observational analyses, high...... tobacco consumption was associated with high body weight, body mass index, waist circumference, hip circumference and waist-hip ratio. In multivariable adjusted models a 1-cigarette/day higher tobacco consumption was associated with 0.05 kg (95% confidence interval 0.02; 0.08) higher body weight, 0.02 kg...

  18. Light bodies in human pituitary adenomas

    DEFF Research Database (Denmark)

    Holck, S; Wewer, U M; Albrechtsen, R

    1987-01-01

    Light bodies are large cytoplasmic granules originally described in the gonadotrophic cells of the rat pituitary gland. In order to determine whether similar bodies occur in the human anterior pituitary gland, 89 pituitary adenomas and periadenomatous tissue from 20 cases were examined by...... cells in periadenomatous tissue from 20 cases. These results show that some human pituitary adenomas may contain light bodies identical to those seen in gonadotrophs of rat pituitary....... transmission electron microscopy. Double membrane bound bodies with filamentous internal structure identical to rodent light bodies were identified in 10 hormone-producing adenomas: 5 PRL, 1 PRL-GH, 2 GH, and 2 ACTH-producing tumours. No light bodies were found in the remaining 79 tumours nor in the pituitary...

  19. Dopamine regulates body size in Caenorhabditis elegans.

    Science.gov (United States)

    Nagashima, Takashi; Oami, Eitaro; Kutsuna, Natsumaro; Ishiura, Shoichi; Suo, Satoshi

    2016-04-01

    The nervous system plays a critical role in the regulation of animal body sizes. In Caenorhabditis elegans, an amine neurotransmitter, dopamine, is required for the tactile perception of food and food-dependent behavioral changes, while its role in development is unknown. In this study, we show that dopamine negatively regulates body size through a D2-like dopamine receptor, DOP-3, in C. elegans. Dopamine alters body size without affecting food intake or developmental rate. We also found that dopamine promotes egg-laying, although the regulation of body size by dopamine was not solely caused by this effect. Furthermore, dopamine negatively regulates body size through the suppression of signaling by octopamine and Gq-coupled octopamine receptors, SER-3 and SER-6. Our results demonstrate that dopamine and octopamine regulate the body size of C. elegans and suggest a potential role for perception in addition to ingestion of food for growth.

  20. Effect of physical activity on body composition

    Energy Technology Data Exchange (ETDEWEB)

    Zanzi, I; Ellis, K J; Aloia, J; Cohn, S H

    1980-01-01

    It has been noted that the deleterious effects on bone calcium of prolonged periods of inactivity, such as bed rest, are halted following resumption of activity. It would seem possible in light of the observations that have been made, that exercise may stimulate bone formation and perhaps counter, to some extent, bone loss as observed in the osteoporosis of aging. The present study was designed to determine the relation between total body calcium, total body potassium and bone mineral content of the radius to the degree of physical activity in a population of normal subjects. Measurement of the calcium was made by in-vivo total body neutron activation analysis. Bone mineral content of the radius and total body potassium, (an index of lean body mass) were measured by photon absorptiometry and the whole body counter, respectively.

  1. Oocytes Polar Body Detection for Automatic Enucleation

    Directory of Open Access Journals (Sweden)

    Di Chen

    2016-02-01

    Full Text Available Enucleation is a crucial step in cloning. In order to achieve automatic blind enucleation, we should detect the polar body of the oocyte automatically. The conventional polar body detection approaches have low success rate or low efficiency. We propose a polar body detection method based on machine learning in this paper. On one hand, the improved Histogram of Oriented Gradient (HOG algorithm is employed to extract features of polar body images, which will increase success rate. On the other hand, a position prediction method is put forward to narrow the search range of polar body, which will improve efficiency. Experiment results show that the success rate is 96% for various types of polar bodies. Furthermore, the method is applied to an enucleation experiment and improves the degree of automatic enucleation.

  2. Body Cultures: the Venezuelan Holy Family

    OpenAIRE

    Guerrero, Javier

    2012-01-01

    In this article, I propose reading the body as a privileged space to debate Venezuelan politics. I expose the violent metaphorical and allegorical operations that manage to disfigure the national bodies, taking them to the very limits of monstrosity before normalizing them. Notwithstanding the compulsion to denounce the political adversary that defiles the Venezuelan ‘holy’ family, the need to preserve the national body par excellence is stronger than these differences and the incidental poss...

  3. Contemporary methods of body composition measurement

    DEFF Research Database (Denmark)

    Fosbøl, Marie Ø; Zerahn, Bo

    2015-01-01

    Reliable and valid body composition assessment is important in both clinical and research settings. A multitude of methods and techniques for body composition measurement exist, all with inherent problems, whether in measurement methodology or in the assumptions upon which they are based....... This review is focused on currently applied methods for in vivo measurement of body composition, including densitometry, bioimpedance analysis, dual-energy X-ray absorptiometry, computed tomography (CT), magnetic resonance techniques and anthropometry. Multicompartment models including quantification of trace...

  4. Importance of body image in marketing communication

    OpenAIRE

    Váradyová, Monika

    2010-01-01

    The thesis dedicated to the issue of body image in the context of marketing communication emphasizing female body imaging in advertising. The aim of Master's thesis is to identify differences in the perception of beauty between the German and Czechoslovak culture. The theoretical part is intended to explain the body image issues, including historical development. Furthermore points out the influence of mass media on women's physical self-concept. The practical part deals with content analysis...

  5. Dismorfna telesna motnja: Body dysmorphic disorder:

    OpenAIRE

    Ahčan, Uroš; Župan, Anja

    2011-01-01

    Background: Body dysmorphic disorder is a somatoform disorder, which is characterized by the patientćs preoccupation with a minor or imagined apperance defect. It has a reported prevalence of 0.7 % to 2.3 % in the general population. Prevalence among patients seeking aesthetic surgery is 6 %to 15 %. Body dysmorphic disorder appears to affect men and women equally. Comorbidity with other psychiatric disorders is frequent. Cosmetic medical treatment is ineffective in treating body dysmorphic di...

  6. Body composition in Egyptian Turner syndrome girls

    OpenAIRE

    Moushira Erfan Zaki; Afifi, Hanan H

    2013-01-01

    Objective: This cross-sectional study was undertaken to construct the new body fat % curve and provide body composition reference data for adolescent girls with Turner syndrome (TS). They diagnosed cytogenetically by blood karyotyping and not treated with growth hormone (GH). Materials and Methods: The study included 70 TS girls from age 13 years to age 17 years. Body composition was measured by bioelectrical impedance. Smoothed centile charts were derived by using the least mean square (...

  7. Wireless Networks for Body-Centric Communications

    OpenAIRE

    Martelli, Flavia

    2013-01-01

    Progress in miniaturization of electronic components and design of wireless systems paved the way towards ubiquitous and pervasive communications, enabling anywhere and anytime connectivity. Wireless devices present on, inside, around the human body are becoming commonly used, leading to the class of body-centric communications. The presence of the body with all its peculiar characteristics has to be properly taken into account in the development and design of wireless networks in this con...

  8. The evolution of whole-body imaging.

    LENUS (Irish Health Repository)

    Moran, Deirdre E

    2012-02-01

    This article reviews the evolution of whole-body imaging, discussing the history and development of radiography, nuclear medicine, computed tomography (CT), positron emission tomography (PET), combined PET-CT, and magnetic resonance imaging. The obstacles hindering progress toward whole-body imaging using each of these modalities, and the technical advances that were developed to overcome them, are reviewed. The effectiveness and the limitations of whole-body imaging with each of these techniques are also briefly discussed.

  9. Foreign Body Embedded in Anterior Chamber Angle

    OpenAIRE

    Shmuel Graffi; Beatrice Tiosano; Ran Ben Cnaan; Jonathan Bahir; Modi Naftali

    2012-01-01

    Introduction. We present a case of a metallic foreign body embedded in the anterior chamber angle. After standing in close proximity to a construction worker breaking a tile, a 26-year-old woman using soft contact lens for the correction of mild myopia presented to emergency department for evaluation of a foreign body sensation of her right eye. Methods and Results. Diagnosis was confirmed by gonioscopic examination and a noncontrast CT scan of head and orbits. The foreign body was removed by...

  10. Media Impact on Students’ Body Image

    OpenAIRE

    Asumadu-Sarkodie, Samuel; Owusu, Phebe Asantewaa

    2015-01-01

    Media promotion of the ideal body as slimness for women and muscularity for men, has led to increasing numbers of both genders reporting dissatisfaction with their bodies and trying to change using unhealthy eating habits. This research was conducted in University for Development Studies, Tamale campus. The main goal was to assess the impact of the media on university students’ attitude toward body image. The objectives of the study is to, determine whether there was any association between b...

  11. Emotional signals in connection with body language.

    OpenAIRE

    Škoda, Jakub

    2014-01-01

    The thesis deals with emotional expressions in body language and its interpretation. In the theoretical part, the author deals with emotions and theories focused on emotions, sympathy, verbal and nonverbal communication as well as body language (gestures, facial expressions, body types and attractiveness). There are many books which provide information about how to recognize nonverbal signals in communication. This study tries to find out if there is a connection between experiences gathered ...

  12. The Silent Language of an Artificial Body

    OpenAIRE

    Alina Maria Hrisca

    2012-01-01

    This article presents some alterations of body language, due to the interventions in/on thebody. Body language has been theorized a lot in the last decades, and one of the most importantauthors we will refer to is Paul Ekman and his micro-expressions theory. Ekman tried to give auniversaldecoderof involuntary face reactions, and this is important now more than ever, becausemicro-expression are more and more diminished, due to the latest chemical and technicalinterventions in/on the body (espe...

  13. BodyWise: evaluating a pilot body image group for patients with anorexia nervosa.

    Science.gov (United States)

    Mountford, Victoria A; Brown, Amy; Bamford, Bryony; Saeidi, Saeideh; Morgan, John F; Lacey, Hubert

    2015-01-01

    Body image disturbance can be enduring and distressing to individuals with eating disorders and effective treatments remain limited. This pilot study evaluated a group-based treatment-BodyWise-developed for use in full and partial hospitalization with patients with anorexia nervosa at low weight. A partial crossover waitlist design was used. BodyWise (N = 50) versus treatment as usual (N = 40) were compared on standardized measures of body image disturbance. Results demonstrated significant improvement in the group compared to treatment as usual for the primary outcome measure (Eating Disorder Examination-Questionnaire Shape Concern subscale) and other manifestations of body image disturbance including body checking and body image quality of life. BodyWise appeared acceptable to participants, and was easy to deliver within the pragmatics of a busy eating disorder service. There is potential for its wider dissemination as a precursor to more active body image interventions.

  14. Examination of body checking, body image dissatisfaction, and negative affect using Ecological momentary assessment.

    Science.gov (United States)

    Stefano, Emily C; Hudson, Danae L; Whisenhunt, Brooke L; Buchanan, Erin M; Latner, Janet D

    2016-08-01

    Research has shown that non-clinical women, particularly those with high body concern, engage in frequent body checking behaviors. The purpose of this study was to use ecological momentary assessment (EMA) to examine the frequency and correlates of body checking behavior, including its association with body image dissatisfaction and negative affect, in non-clinical women with high body concern. Undergraduate female participants with high body concern (n=22) were assessed five times per day for five days via text messages sent to their smart phones. During each assessment, participants reported the number of times they engaged in eight different body checking behaviors and their current level of negative affect and body dissatisfaction. After aggregation, a total of 3064 body checking behaviors were reported by the sample during the five-day period. All participants reported engaging in body checking at least once per day, with a mean of 27.85 checking behaviors per day. Hierarchical Linear Modeling revealed that body checking significantly predicted both body dissatisfaction and negative affect. These results provide preliminary support for the cognitive behavioral theory of eating disorders, suggesting that as women engage in more frequent body checking behaviors, they also experience higher levels of body dissatisfaction and negative affect. PMID:27086048

  15. Altered Visual Adaptation to Body Shape in Eating Disorders: Implications for Body Image Distortion.

    Science.gov (United States)

    Mohr, Harald M; Rickmeyer, Constanze; Hummel, Dennis; Ernst, Mareike; Grabhorn, Ralph

    2016-07-01

    Previous research has shown that after adapting to a thin body, healthy participants (HP) perceive pictures of their own bodies as being fatter and vice versa. This aftereffect might contribute to the development of perceptual body image disturbances in eating disorders (ED).In the present study, HP and ED completed a behavioral experiment to rate manipulated pictures of their own bodies after adaptation to thin or fat body pictures. After adapting to a thin body, HP judged a thinner than actual body picture to be the most realistic and vice versa, resembling a typical aftereffect. ED only showed such an adaptation effect when they adapted to fat body pictures.The reported results indicate a relationship between body image distortion in ED and visual body image adaptation. It can be suspected that due to a pre-existing, long-lasting adaptation to thin body shapes in ED, an additional visual adaption to thin body shapes cannot be induced. Hence this pre-existing adaptation to thin body shapes could induce perceptual body image distortions in ED. PMID:26921409

  16. Dcp1-Bodies in Mouse Oocytes

    OpenAIRE

    Swetloff, Adam; Conne, Beatrice; Huarte, Joachim; Pitetti, Jean-Luc; Nef, Serge; Vassalli, Jean-Dominique

    2009-01-01

    Processing bodies (P-bodies) are cytoplasmic granules involved in the storage and degradation of mRNAs. In somatic cells, their formation involves miRNA-mediated mRNA silencing. Many P-body protein components are also found in germ cell granules, such as in mammalian spermatocytes. In fully grown mammalian oocytes, where changes in gene expression depend entirely on translational control, RNA granules have not as yet been characterized. Here we show the presence of P-body-like foci in mouse o...

  17. Body composition in Egyptian Turner syndrome girls

    Directory of Open Access Journals (Sweden)

    Moushira Erfan Zaki

    2013-01-01

    Full Text Available Objective: This cross-sectional study was undertaken to construct the new body fat % curve and provide body composition reference data for adolescent girls with Turner syndrome (TS. They diagnosed cytogenetically by blood karyotyping and not treated with growth hormone (GH. Materials and Methods: The study included 70 TS girls from age 13 years to age 17 years. Body composition was measured by bioelectrical impedance. Smoothed centile charts were derived by using the least mean square (LMS method. Results: The new body fat curves reflect the increase of body fat mass (FM from age 13 years to age 17 years. Body FM % of Egyptian TS girls was lower when compared with age-matched American untreated TS girls. Conclusion: This study presents the new body fat curves and reference values of body composition for untreated Egyptian TS adolescent girls. The present charts can be used for direct assessment of body FM % for Egyptian TS girls and evaluation for cases on GH treatment or other growth promoting therapy.

  18. Whole-body imaging modalities in oncology.

    Science.gov (United States)

    Carty, Fiona; Shortt, Conor P; Shelly, Martin J; Eustace, Stephen J; O'Connell, Martin J

    2010-03-01

    This article outlines the expanding approaches to whole-body imaging in oncology focusing on whole-body MRI and comparing it to emerging applications of whole-body CT, scintigraphy, and above all PET CT imaging. Whole-body MRI is widely available, non-ionizing and rapidly acquired, and inexpensive relative to PET CT. While it has many advantages, WBMRI is non-specific and, when compared to PET CT, is less sensitive. This article expands each of these issues comparing individual modalities as they refer to specific cancers.

  19. Body composition in Egyptian Turner syndrome girls

    Science.gov (United States)

    Zaki, Moushira Erfan; Afifi, Hanan H.

    2013-01-01

    OBJECTIVE: This cross-sectional study was undertaken to construct the new body fat % curve and provide body composition reference data for adolescent girls with Turner syndrome (TS). They diagnosed cytogenetically by blood karyotyping and not treated with growth hormone (GH). MATERIALS AND METHODS: The study included 70 TS girls from age 13 years to age 17 years. Body composition was measured by bioelectrical impedance. Smoothed centile charts were derived by using the least mean square (LMS) method. RESULTS: The new body fat curves reflect the increase of body fat mass (FM) from age 13 years to age 17 years. Body FM % of Egyptian TS girls was lower when compared with age-matched American untreated TS girls. CONCLUSION: This study presents the new body fat curves and reference values of body composition for untreated Egyptian TS adolescent girls. The present charts can be used for direct assessment of body FM % for Egyptian TS girls and evaluation for cases on GH treatment or other growth promoting therapy. PMID:24019614

  20. Teaching Virtual Characters to use Body Language

    OpenAIRE

    Friedman, Doron; Gillies, Marco

    2005-01-01

    Non-verbal communication, or “body language”, is a critical component in constructing believable virtual characters. Most often, body language is implemented by a set of ad-hoc rules.We propose a new method for authors to specify and refine their character’s body-language responses. Using our method, the author watches the character acting in a situation, and provides simple feedback on-line. The character then learns to use its body language to maximize the rewards, based on a reinforcement ...