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1
The association of disproportionate skeletal growth and abnormal radius dimension ratio with curve severity in adolescent idiopathic scoliosis
2010-01-03

Abnormal anthropometric measurements during the peripubertal growth spurt have been documented in adolescent idiopathic scoliosis (AIS). Magnetic resonance (MR) imaging studies of the spine have suggested a disproportionate endochondral and membranous ossification in AIS. The present study aimed at investigating whether disproportional ossification and skeletal growth occurred ...

PubMed Central

2
Hydraulic torque converter
1992-10-06

This patent describes a torque converter having an impeller, a turbine and a stator forming a torus, wherein the torus has a median section having its radial dimension exceeding its axial dimension, and the torus having an axial dimension fixed at a predetermined axial offset, wherein at least one of the impeller and the turbine is ...

Energy Citations Database

3
Chem_DepositionMod.F90

... pointer, dimension(:) :: radius ! particle radius [m] real, pointer, .... Calculate the coefficient for resuspension if(oro(i,j) .eq. ...

NASA Website

4
Chem_Deposition - NASA

... pointer, dimension(:) :: radius ! particle radius [m] real, pointer, .... Calculate the coefficient for resuspension if(oro(i,j) .eq. ...

NASA Website

5
Q stars in extra dimensions
2004-06-01

We study Q stars with global and local U(1) symmetry in extra dimensions in asymptotically anti de Sitter or flat spacetime. The behavior of the mass, radius, and particle number of the star is quite different in three dimensions, but in five, six, eight, and eleven dimensions is similar to the behavior in four.

NASA Astrophysics Data System (ADS)

6
Effects of aggregation on scattering and ... - Publications - NASA

The effects of the fractal dimension and prefactor, the monomer radius, the number of monomers in the aggregate, and the refractive index on light scattering and ...

NASA Website

7
Plastic Straining of Iridium Alloy DOP-26 During Cup Sizing Operations
2007-09-01

DOP-26 iridium alloy cups are used for fuel cladding for radioisotope power systems. The cups are deep drawn and recrystallized prior to final fabrication operations. This study characterizes the plastic deformation of cups during a sizing operation following the recrystallization heat treatment. The purpose of the sizing operation is to achieve the specified roundness, diameter, and ...

Energy Citations Database

8
Radius of the particle emission volume from two-particle interferometry applied to collisions of relativistic nuclei
1984-10-01

Physical meaning of dimensions of the particle emission volume obtained from two-particle interferometry is discussed. Results of various authors are compiled with attention given to the necessity to use a consistent definition of the radius.

Energy Citations Database

9
Plasma focus matching conditions.
1988-01-01

A snow-plough and slug models have been used to obtain the optimum matching conditions of the plasma in the focus. The dimensions of the plasma focus device are, inner electrode radius = 2 cm, outer electrode radius = 5.5 cm, and its length = 8 cm. It was...

National Technical Information Service (NTIS)

10
JET Project (Design Proposal).
1976-01-01

A large Tokamak experiment, which aims to study plasma behavior in conditions and dimensions approaching those required in a fusion reactor is described. The maximum plasma minor radius is 1.25m and the major radius is 2.96m. An important feature is the f...

National Technical Information Service (NTIS)

11
JET Project (Design Proposal).
1976-01-01

This proposal describes a large Tokamak experiment, which aims to study plasma behavior in conditions and dimensions approaching those required in a fusion reactor. The maximum plasma minor radius (a) is 1.25m and the major radius (R sub 0 ) is 2.96m. An ...

National Technical Information Service (NTIS)

12
hep�ph/9803496 TSL/ISV�98�0193

that the proton radius is � 200 MeV \\Gamma1 . Since oe applies in each dimension, one obtains a two� dimensional

E-print Network

13
Unexpected Effects of Prey Dimensions and Morphologies on the Size Selective Feeding by Two Bacterivorous ...

... prey radius). However, van der Waals forces and hydrodynamic boundary effects, neglected by the model, may alter this prediction. ... ...

NBII National Biological Information Infrastructure

14
Loaf of Bread
2006-03-24

In baking a hemispherical loaf of bread of 10" radius, the crust was everywhere of an equal thickness, and the solidity of the crust was equal to half the solid content of the whole loaf. What were the dimensions of the interior soft part?

NSDL National Science Digital Library

15
Indium Arsenide (InAs) Quantum ... - Glenn Research Center - NASA

Oct 16, 2006 ... When carriers are confined in dimensions comparable to the Bohr exciton radius of the bulk semiconductor, their energy states become ...

NASA Website

16
A Polynomial-Time Algorithm for Computing the Yolk in Fixed ...
1991-08-01

... case. 3 what determines the yolk radius? The ... l). 0 Page 12. 4 a polynomial time algorithm for the yolk in fixed dimension In ...

DTIC Science & Technology

17
Diffusion-Limited Aggregation of Silica Microspheres in Two Dimensions.
1985-01-01

Current wisdom from computer simulations of two-dimensional aggregation holds that the fractal dimension relating cluster mass to radius of gyration is about 1.7 when only single particles are allowed to diffuse as well. Recently, a physical realization o...

National Technical Information Service (NTIS)

18
Can extra dimensions stop gravitational collapse
1989-01-01

The authors study some physical consequences of the existence of a compact extra dimension whose scale is assumed to vary with the radial coordinate r. They expect that the gravitational collapse of a star of mass m must have a stop at a radius of the order of 2m.

Energy Citations Database

19
Generalized Uncertainty Principle in the Presence of Extra Dimensions
2011-09-01

We argue that in the generalized uncertainty principle (GUP) model, the parameter ?0 whose square root, multiplied by Planck length lp, approximates the minimum measurable distance, varies with energy scales. Since the minimal measurable length and extra dimensions are both suggested by quantum gravity theories, we investigate the models based on the GUP and one extra ...

NASA Astrophysics Data System (ADS)

20
Nuclear Threshold States: Yesterday, Today, Tomorrow
2010-04-30

50 years ago exotic nuclear states with abnormally large radii located close to the thresholds of emission of nucleons or clusters were predicted. Recently a hypothesis of possible existence of alpha-particle Bose condensation was proposed. The 0{sup +}{sub 2}(7.65 MeV) state of {sup 12}C(so-called Hoyle state) is considered to be the prototype of such condensed state and have ...

Energy Citations Database

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21
Nuclear Threshold States: Yesterday, Today, Tomorrow
2010-04-01

50 years ago exotic nuclear states with abnormally large radii located close to the thresholds of emission of nucleons or clusters were predicted. Recently a hypothesis of possible existence of ?-particle Bose condensation was proposed. The 0+2(7.65 MeV) state of 12C (so-called Hoyle state) is considered to be the prototype of such condensed state and have a dilute structure. ...

NASA Astrophysics Data System (ADS)

22
Increase in the embedding dimension in the heart rate variability associated with left ventricular abnormalities
2006-10-01

In the present study, the authors report evidence that the existence of premature ventricular contractions increases the embedding dimension of the cardiac dynamics. They also analyze patients with congestive heart failure, a severe clinical condition associated with abnormal left ventricular function. Results also show an increase in the embedding ...

NASA Astrophysics Data System (ADS)

23
Razlozhenie preobrazovanij obratnykh radius-vektorov na sovokupnost' preobrazovanij iz gruppy Vejlya. Konformnaya razmernost' ehlektromagnitnogo polya. (Expansion of the transformations of reciprocal radius-vectors into a set of transformations belonging to the Weyl group. Conformal dimension of electromagnetic field).
1989-01-01

It is shown that the transformations of reciprocal radius-vectors can be expanded into four sets of transformations belonging to the Weyl group. The formulas of the transformation of the components of electromagnetic field, current and charge densities as...

National Technical Information Service (NTIS)

24
Polymer chain swelling induced by dispersed nanoparticles.
2008-02-21

The dimensions of individual deuterated polystyrene (d-PS) chains in a well-dispersed mixture of protonated polystyrene and chemically identical nanoparticles was determined by neutron scattering. A 10%-20% increase in the radius of gyration of d-PS was found when the nanoparticles are homogeneously dispersed in the polymer, an effect that occurs only when ...

PubMed

25
Modeling distributions of flying insects: Effective attraction radius of pheromone in two and three dimensions. Journal of Theoretical Biology

The effective attraction radius (EAR) of an attractive pheromone-baited trap was defined as the radius of a passive ¿sticky¿ sphere that would intercept the same number of flying insects as the attractant. The EAR for a particular attractant and insect species in nature is easily determined by a cat...

Technology Transfer Automated Retrieval System (TEKTRAN)

26
########### arXiv:0802.0769v1

to small x values so that l is many times larger than the proton radius. For compact photon fluctuations meson; l 0 could be of order of the proton radius (0:9 fm), as this is the only dimensionful scale the same as M 2 #26; , and the value of l 0 is very close to the proton radius. The parametrization D has

E-print Network

27
Estimate for the size of the compactification radius of a one extra dimension universe
2008-01-01

In this work, we use the Casimir effect to probe the existence of one extra dimension. We begin by evaluating the Casimir pressure between two plates in a M{sup 4} x S{sup 1} manifold, and then use an appropriate statistical analysis in order to compare the theoretical expression with a recent experimental data and set bounds for the compactification ...

Energy Citations Database

28
Thymus: reexamination of age-related changes in size and shape
1985-08-01

The computed tomographic appearance of the normal and abnormal thymus and its age-related changes have been described. However, there is little quantitative data regarding thymic morphology at the extremes of age and the value of thymic measurements in particular thickness, to recognize thymic abnormality. Using computed tomography the thymic morphology in ...

Energy Citations Database

29
Radius stabilization in a supersymmetric warped compactification
2004-10-15

A supersymmetric (SUSY) model of radius stabilization is constructed for the S{sup 1}/Z{sub 2} warped compactifications with a hypermultiplet in five dimensions. Requiring the continuity of scalar field across the boundaries, we obtain radius stabilization preserving SUSY, realizing the SUSY extension of the Goldberger-Wise mechanism. ...

Energy Citations Database

30
Solution structure of phosphorylase kinase studied using small-angle x-ray and neutron scattering
1992-01-21

Small-angle X-ray and neutron scattering have been used to characterize the solution structure of rabbit skeletal phosphorylase kinase. The radius of gyration of the unactivated holoenzyme determined from neutron scattering is 94 {angstrom}, and its maximum dimension is approximately 275-295 {angstrom}. A planar model has been constructed that is in ...

Energy Citations Database

31
Nanometrology using scanning probe microscopy and its application to resist patterns
1998-11-24

A new metrological method for critical dimension measurement of nano-structures had been developed. Two critical dimensions of a fabricated pattern--the width and the radius of an edge--were calculated from the height dependence of the apparent width measured by scanning probe microscopy. The feasibility of this method was confirmed by ...

Energy Citations Database

32
Fractal dimension of cerebral surfaces using magnetic resonance images
1988-11-01

The calculation of the fractal dimension of the surface bounded by the grey matter in the normal human brain using axial, sagittal, and coronal cross-sectional magnetic resonance (MR) images is presented. The fractal dimension in this case is a measure of the convolutedness of this cerebral surface. It is proposed that the fractal ...

Energy Citations Database

33
Vacuum energy, the cosmological constant, and compact extra dimensions: Constraints from Casimir effect experiments
2008-05-15

We consider a universe with a compact extra dimension and a cosmological constant emerging from a suitable ultraviolet cutoff on the zero-point energy of the vacuum. We derive the Casimir force between parallel conducting plates as a function of the following scales: plate separation, radius of the extra dimension and cutoff energy ...

Energy Citations Database

34
Probing additional dimensions in the universe with neutron experiments
2004-09-13

We investigate the modifications of the gravitational force in the context of recent work on large supplementary dimensions and deduce a formula for the expected compactification radius for the n additional dimensions in the universe, as a function of the Planck and the electro-weak scales. We argue that the correspondingly modified ...

Energy Citations Database

35
Probing Universal Extra Dimensions through rare decays induced by b{yields}s transition
2007-11-19

A few B{sub d,s} and {lambda}{sub b} decays induced by b{yields}s transition are studied in the Standard Model and in the framework of the Appelquist, Cheng and Dobrescu (ACD) model, which is a New Physics scenario where a single universal extra dimension is considered. In particular, we investigate the sensitivity of the observables to the radius R of the ...

Energy Citations Database

36
Finite-temperature instability for compactification
1986-09-15

We consider finite-temperature effects upon theories with extra dimensions compactified via vacuum stress-energy (Casimir) effects. For sufficiently high temperature, a static configuration for the internal space is impossible. At somewhat lower temperatures, there is an instability due to thermal fluctuations of the radius of the compact ...

Energy Citations Database

37
Finite temperature instability for compactification
1986-03-01

We consider finite temperature effects upon theories with extra dimensions compactified via vacuum stress energy (Casimir) effects. For sufficiently high temperature, a static configuration for the internal space is impossible. At somewhat lower temperatures, there is an instability due to thermal fluctuations of radius of the compact ...

Energy Citations Database

38
Astrophysical implications of pion condensation
1974-01-01

Consequences for neutron star structure of forms of abnormal nuclear matter and pion condensation effects are studied using different equations of state for neutron star matter. Pressure as a function of energy density and mass- radius relations are plotted. 7 figures (SDF)

Energy Citations Database

39
Inverse and Spontaneous Supersymmetry Breaking in S1 � R3
2010-01-01

In this paper, we study the influence of hard-supersymmetry-breaking terms in an N = 1, d = 4 supersymmetric model, with S1 � R3 space-time topology. It is found that for some interaction terms and for certain values of the couplings, supersymmetry is unbroken for small lengths of the compact radius and spontaneously breaks as the radius increases. Also, ...

NASA Astrophysics Data System (ADS)

40
A non-abelian self-dual gauge theory in 5 + 1 dimensions
2011-07-01

We construct a non-Abelian gauge theory of chiral 2-forms (self-dual gauge fields) in 6 dimensions with a spatial direction compactified on a circle of radius R. It has the following two properties. (1) It reduces to the Yang-Mills theory in 5 dimensions for small R. (2) It is equivalent to the Lorentz-invariant theory of Abelian ...

NASA Astrophysics Data System (ADS)

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41
Fifth dimension of life and the 4/5 allometric scaling law for human brain.
2004-01-01

Brain cells are not spherical. The basal metabolic rate (B) of a spherical cell scales as B approximately r2, where r is the radius of the cell; that of a brain cell scales as B approximately r(d), where r is the characteristic radius of the cell and d is the fractal dimensionality of its contour. The fractal geometry of the cell leads to a 4/5 allometric ...

PubMed

42
Use of silica sols in inorganic molecular sieving membranes.
1995-01-01

Polymeric silica sols, were deposited on commercial (gamma)-alumina supports to prepare gas separation membranes. Optimization of the sol fractal dimension and radius of gyration and minimization of condensation rate led to formation of a discrete film wi...

National Technical Information Service (NTIS)

43
Thermo-Elastic-Plastic Stresses in Multi-Layered Cylinders
1981-11-01

... where rL is the radius to the outer surface of the Lth layer. Contact ... where kL(T) is the dimensioned thermal conductivity of the Lth layer and kSLso ...

DTIC Science & Technology

44
The Roche Coordinates in Three Dimensions and Their Application to Hydrodynamics.
1969-01-01

In a preceding report (AD-688 245), a new system of curvilinear coordinates--hereafter referred to as Roche coordinates was introduced--in which spheres of constant radius are replaced by equipotential surfaces of a rotating gravitational dipole, while th...

National Technical Information Service (NTIS)

45
The Effect of Solvent on the Unperturbed Dimensions of Polystyrene.
1968-01-01

The unperturbed root-mean-square radius of gyration of a polystyrene sample was measured in ten critical consolute mixtures. The values of the intrinsic viscosity and coil size were found to reach a maximum in the vicinity of the polymer solubility parame...

National Technical Information Service (NTIS)

46
High quality muon detection for the SSC.
1992-01-01

We present an alternative approach for muon detection at the SSC based on a high field magnet (B = 5 Tesla) of ''moderate'' dimensions (radius = 3.5 m; overall length = 15 meters). A precision determination of a muon's momentum is made using a point-slope...

National Technical Information Service (NTIS)

47
Dimension of Polypeptide Chains in Helicogenic Solvents.
1965-01-01

Observed departures of the mean square end-to-end distance and radius of gyration of polypeptides (poly-gamma-benzyl-L-glutamate and polycarbobenzoxy-L-lysine) of high molecular weight in helicogenic solvents such as dimethylformamide fro...

National Technical Information Service (NTIS)

48
Design Parameters of Free-Flooding Cylindrical Transducers.
1969-01-01

The free-flooding cylindrical transducer devoid of pressure-release material combines resistance to hydrostatic pressure with design flexibility resulting from the existence of resonances primarily controlled by two independent dimensions: the radius, whi...

National Technical Information Service (NTIS)

49
Cloud Development Studies.
1966-01-01

The report presents the cloud development data for the Pre-Schooner II high explosive cratering event conducted in a rhyolite medium in southwestern Idaho. Early base surge radius dimensions are given as a function of time in several directions, and are r...

National Technical Information Service (NTIS)

50
Aperture Illumination of Multibeam Satellite Antennas.
1983-01-01

The dimensioning of reflectors with optimal aperture illumination is considered. For circular aperture illuminations of the form A + B 1-(p/a)2 v (a: radius of the aperture, p: radial coordinate) diagrams are presented which show sidelobe level, illuminat...

National Technical Information Service (NTIS)

51
Diagnosis System Based on Wavelet Transform, Fractal Dimension and Neural Network
2007-01-01

In this study we introduce a diagnosis system based on wavelet and fractal dimension for diagnose the Heart Mitral Valve Diseases. This study deals with the feature extraction from the Doppler signal waveform at heart mitral valve using ultrasound. Wavelet packet transforms, Fourier transform and Fractal Dimension methods are used for feature extraction ...

NASA Astrophysics Data System (ADS)

52
Thickness�radius relationship and spring constants of cholesterol helical ribbons
2009-09-15

Using quantitative phase microscopy, we have discovered a quadratic relationship between the radius R and the thickness t of helical ribbons that form spontaneously in multicomponent cholesterol�surfactant mixtures. These helical ribbons may serve as mesoscopic springs to measure or to exert forces on nanoscale biological objects. The spring constants of these helices depend ...

PubMed Central

53
Thickness-radius relationship and spring constants of cholesterol helical ribbons.
2009-08-26

Using quantitative phase microscopy, we have discovered a quadratic relationship between the radius R and the thickness t of helical ribbons that form spontaneously in multicomponent cholesterol-surfactant mixtures. These helical ribbons may serve as mesoscopic springs to measure or to exert forces on nanoscale biological objects. The spring constants of these helices depend ...

PubMed

54
Chemistry of Mercury Species and Their Control in Coal Combustion
1998-02-28

Silica aggregates produced in a tubular aerosol reactor were classified according to the electrical mobility equivalent radius by differential mobility analyzer. Then E the classified aerosol was further analyzed by in situ light scattering measurement and TEM micrograph analysis to evaluate the properties of agglomerates, such as the radius of gyration, ...

DOE Information Bridge

55
Calcinosis cutis, osteoma cutis, poikiloderma and skeletal abnormalities (COPS syndrome)--a new entity?
1991-03-01

A 4-year-old boy with subcutaneous tumours is described. These tumours were calcified and had secondary osteoma formation. In addition the patient showed poikiloderma on the face and less prominently on arms and legs. X-ray films of the distal metaphyses of the radius, ulna and tibia revealed irregular mineralisation. Repeated laboratory tests revealed no ...

PubMed

56
Rupture of the flexor pollicis longus tendon after volar fixed-angle plating of a distal radius fracture: a case report.
2007-09-01

We report a case of complete rupture of the flexor pollicis longus tendon 13 months after volar fixed-angle plating of a distal radius fracture. Tendon disruption was associated with a prominent distal volar lip of the plate. The plate was placed at the volar distal lip of the radius, at the location recommended by the manufacturer. Most previous reports ...

PubMed

57
Use of SANS to study hard-matter (non polymer, non-biological systems

Assembly - Phase transition - Thermodynamics - Reaction kinetics � Crystallization � Fractal Dimension #12;OAK and uniform. The shape of nanoparticle is roughly spherical. � The microstructure of the zirconia powder Q Power Law exponent Surface Fractal Dimension High Q Power Law exponent High Q Radius of Gyration

E-print Network

58
Itinerant ferromagnetism in an atom trap
2009-06-01

We propose an experiment to explore the magnetic phase transitions in interacting fermionic Hubbard systems and describe how to obtain the ferromagnetic phase diagram of itinerant-electron systems from these observations. In addition, signatures of ferromagnetic correlations in the observed ground states are found: for large trap radii (trap radius RT>4 , in units of ...

NASA Astrophysics Data System (ADS)

59
Evaluation of toughness on the basis of fracture macrogeometry
1987-10-01

The toughness of steel determines the characteristic dimensions of fracture components such as crack displacement and the radius of the plastic zone. The results of measuring these dimensions can be used to evaluate the degree of embrittlement on full-size specimens. For this purpose, the authors of this paper quantitatively examined ...

Energy Citations Database

60
Discovery Potential for Universal Extra Dimensions Signals with Four Leptons in the Final State
2007-02-01

The search for Universal Extra Dimensions for four values of the compactification radius in the 4e, 4mu and 2e 2mu channels is presented. It is shown that the CMS detector is sensitive up to R-1= 900 GeV/c2 for an integrated luminosity of 30 fb-1.

NASA Astrophysics Data System (ADS)

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61
Dimension Six Correction to the Vector Sector of AdS/QCD Model
2007-09-06

We study the effect of dimension six term F^3 on the predictions of the holographic model for the vector meson form factor. It is shown that the dimensionless parameter with which this term enters the action determines the corrections to the electric radius, magnetic and quadrupole moments of the rho meson. The results suggest that the addition of higher ...

DOE Information Bridge

62
Densest local sphere-packing diversity: General concepts and application to two dimensions Adam B. Hopkins and Frank H. Stillinger

Densest local sphere-packing diversity: General concepts and application to two dimensions Adam B for the Science and Technology of Materials, Program in Applied and Computational Mathematics, Princeton Center 2010 The densest local packings of N identical nonoverlapping spheres within a radius Rmin N of a fixed

E-print Network

63
Characterization of medical time series using fuzzy similarity-based fractal dimensions.
2003-02-01

This paper attempts to characterize medical time series using fractal dimensions. Existing fractal dimensions like box, information and correlation dimensions characterize the time series by measuring the rate at which the distribution of the time series changes when the length (or radius) of the box (or ...

PubMed

64
Gamma rays from the Galactic bulge and large extra dimensions.
2004-03-19

An intriguing feature of extra dimensions is the possible production of Kaluza-Klein gravitons by nucleon-nucleon bremsstrahlung, in the course of core collapse of massive stars, with gravitons then being trapped around the newly born neutron stars and decaying into two gamma rays, making neutron stars gamma-ray sources. We strengthen the limits on the ...

PubMed

65
Expanded chain dimensions in polymer melts with nanoparticle fillers.
2010-05-28

We apply the self-consistent polymer reference interaction site model (SC/PRISM) to liquid state calculations of the chain dimensions in polymer melts with added nanoparticle fillers. The nanoparticles are assumed to be smaller than the polymer radius of gyration and are attracted to the polymer so that they are miscible. We find that the nanoparticles ...

PubMed

66
Noninvasive assessment of left ventricular function in myotonic muscular dystrophy.
1978-11-01

In order to assess left ventricular function, measurements of left ventricular internal dimension and its rate of change have been made by echocardiography in 7 patients with myotonic dystrophy and the three children of one of them, who were clinically normal but had abnormal muscle biopsies. Electrocardiograms and systolic time intervals were also ...

PubMed Central

67
Universal scaling dynamics in a perturbed granular gas
2010-02-01

We study the response of a granular system at rest to an instantaneous input of energy in a localised region. We present scaling arguments that show that, in d dimensions, the radius of the resulting disturbance increases with time t as t?, and the energy decreases as t-?d, where the exponent ?=1/(d+1) is independent of the coefficient of restitution. We ...

NASA Astrophysics Data System (ADS)

68
Study of FCNC-mediated rare B{sub s} decays in a single universal extra dimension scenario
2007-02-01

We study the rare semileptonic and radiative leptonic B{sub s} decays in the universal extra dimension model. In this scenario, with a single extra dimension, there exists only one new parameter beyond those of the standard model, which is the inverse of the compactification radius R. We find that with the additional contributions due ...

Energy Citations Database

69
Stability of compactification during inflation
1990-03-01

The possibility that inflation may trigger an instability in compactification of extra spatial dimensions is considered. In old, new, or extended inflation, the false vacuum energy results in a semiclassical instability in which the scalar field representing the radius of the extra dimensions may tunnel through a potential barrier ...

Energy Citations Database

70
Double-lepton polarization asymmetries and polarized forward backward asymmetries in the rare b{yields}sl{sup +}l{sup -} decays in a single universal extra dimension scenario
2008-08-01

We study the double-lepton polarization asymmetries and single and double-lepton polarization forward-backward asymmetries of the rare b{yields}sl{sup +}l{sup -} mode within the standard model and in the Appelquist-Cheng-Dobrescu model, which is a new physics scenario with a single universal extra dimension. In particular, we examine the sensitivity of the observables to the ...

Energy Citations Database

71
Determination of absolute dimensions of main sequence binaries
1980-01-01

Methods which can reduce random and systematic errors in the determination of absolute dimensions of main sequence stars to values appreciably less than 10 percent are considered. Topics include the importance of choosing suitable double-lined eclipsing systems, spectral lines and photometric models for precision determination of stellar dimensions, and ...

NASA Astrophysics Data System (ADS)

72
Analytic approximation to 5 dimensional black holes with one compact dimension
2005-01-15

We study black hole solutions in R{sup 4}xS{sup 1} space, using an expansion to second order in the square of the ratio of the radius of the horizon, {mu}, and the circumference of the compact dimension, L. A study of geometric and thermodynamic properties indicates that the black hole fills the space in the compact dimension at ...

Energy Citations Database

73
Feasibility Study - NMR Imaging Microscope.
1981-01-01

The influences of probe geometry are analyzed and quantified for the very small dimensions and high magnetic fields required to examine individual cells and to explore the fundamental differences between normal and abnormal cells for both research and dia...

National Technical Information Service (NTIS)

74
Study of thermal and chemical effects on cellulase enzymes: Viscosity measurements
2009-11-01

The behaviour of cellulase enzymes in phosphate saline buffer has been studied over a wide range of temperatures and enzyme concentrations by using viscosity measurements. To characterize the conformation change of cellulase versus temperature and chemical denaturants, such as guanidinium chloride (GdmCl) and urea, the information about the intrinsic viscosity and the hydrodynamic ...

NASA Astrophysics Data System (ADS)

75
Management of children with Thrombocytopenia-absent radius syndrome: An institutional experience.
2011-07-19

Aim:? Thrombocytopenia-absent radius (TAR) syndrome is characterised by bilateral absence of the radii in the presence of both thumbs and hypomegakaryocytic thrombocytopenia. We report our experience of three patients affected by TAR syndrome presenting with different clinical manifestations focusing on the management of these patients. Methods and results:? We propose the use ...

PubMed

76
Sperm Shape Abnormalities Induced by Energy-Related Hydrocarbons and Industrial Chemicals. EPA-1AG-D6-E681-AN, Progress Report, July 1, 1978-December 31, 1978.
1979-01-01

Progress is reported in the following subject areas: changes in murine sperm head dimensions induced by low doses of x-irradiation; genetic differences in the induction of abnormal sperm with polycyclic hydrocarbons; the role of aryl hydrocarbon hydroxyla...

National Technical Information Service (NTIS)

77
Mass and free energy of Lovelock black holes
2011-10-01

An explicit formula for the ADM mass of an asymptotically AdS black hole in a generic Lovelock gravity theory is presented, identical in form to that in Einstein gravity, but multiplied by a function of the Lovelock coupling constants and the AdS curvature radius. A Gauss' law-type formula relates the mass, which is an integral at infinity, to an expression depending instead ...

NASA Astrophysics Data System (ADS)

78
Fractal dimension and mechanism of aggregation of apple juice particles.
2010-04-01

Turbidity of freshly squeezed apple juice is produced by a polydisperse suspension of particles coming from the cellular tissue. After precipitation of coarse particles by gravity, only fine-colloidal particles remain in suspension. Aggregation of colloidal particles leads to the formation of fractal structures. The fractal dimension is a measure of the internal density of ...

PubMed

79
Superlattice Formation in a Binary Mixture of Block Copolymer Micelles
2006-09-01

A binary solution mixture of distinct block copolymer micelles is found to adopt a superlattice. The larger micelles, formed from polystyrene-polyisoprene diblocks, have a nominal radius of 29 nm; the smaller micelles, formed from polystyrene-polydimethylsiloxane diblocks, have a nominal radius of 16 nm. The superlattice unit cell ...

NASA Astrophysics Data System (ADS)

80
Structure of light waves in a waveguide tapered to subwavelength transverse size
2002-08-31

The penetration of an H wave through a waveguide whose radius varies continuously from about the wavelength size to subwavelength dimensions (of the order of 1/10 wavelength) is calculated. The method for the field analysis is developed and the range of its applicability is studied by considering some numerical examples. The dependence of the transmission ...

Energy Citations Database

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81
Size Effect on Failure of Pre-stretched Free-Standing Nanomembranes
2010-05-15

Free-standing nanomembranes are two-dimensional materials with nanometer thickness but can have macroscopic lateral dimensions. We develop a fracture model to evaluate a pre-stretched free standing circular ultrathin nanomembrane and establish a relation between the energy release rate of a circumferential interface crack and the pre-strain in the membrane. Our results ...

PubMed Central

82
Scattering of spin-polarized electron in an Aharonov-Bohm potential
2008-05-15

The scattering of spin-polarized electrons in an Aharonov-Bohm vector potential is considered. We solve the Pauli equation in 3 + 1 dimensions taking into account explicitly the interaction between the three-dimensional spin magnetic moment of electron and magnetic field. Expressions for the scattering amplitude and the cross section are obtained for spin-polarized electron ...

Energy Citations Database

83
Lennard-Jones fluids in cavities
1989-03-01

Static and dynamic properties of Lennard-Jones particle in spherical cavities of molecular dimensions are studied by molecular dynamics (MD) simulation. The local density is a function of the radial coordinate; a layered density profile is reproduced by the iterative solution of an approximate BGY equation. The pair correlation function exhibits a broadened first-neighbor peak ...

Energy Citations Database

84
FLUID CONTACTOR APPARATUS
1956-04-17

The fluid contactor apparatus comprises a cylindrical column mounted co- axially and adapted to rotate within a cylindrical vessel, for the purpose of extracting a solute from am aqueous solution by means of an organic solvent. The column is particularly designed to control the vortex pattern so as to reduce the height of the vortices while, at the same time, the width of the annular ...

DOEpatents

85
Electron emission from a semiconductor quantum ring under normally incident radiation.
2007-04-04

In this paper we investigate the current density due to electrons emitted during normal irradiation of a toroidal quantum ring of a strongly degenerate wide-gap semiconductor. The computed results show that the current density increases in a step-like manner with increase in the incident photon energy. Increased current density can be obtained by reducing the dimensions of the ...

PubMed

86
Bohr's Theorem for Monogenic Functions
2007-09-01

In 1914 Bohr discovered that there exists a radius r?(0,1) such that if a power series of a holomorphic function converges in the unit disk and its sum has a modulus less than 1, then for |z|radius does not depend on the function. Recently analogous results were obtained for ...

NASA Astrophysics Data System (ADS)

87
Superworlds/hyperworlds
1986-03-01

Some simple exercises are carried out which clarify the physics of a 5-dimensional world in which one dimension is curled up to a radius R. A technical problem necessary to generalize this discussion to d dimensions is considered - the determination of the sizes of spinors in higher dimensions. The origin of ...

DOE Information Bridge

88
SHRINKING THE BRANEWORLD: BLACK HOLE IN A GLOBULAR CLUSTER
2009-11-10

Large extra dimensions have been proposed as a possible solution to the hierarchy problem in physics. In one of the suggested models, the RS2 braneworld model, black holes may evaporate by Hawking radiation faster than in general relativity, on a timescale that depends on the black hole mass and on the asymptotic radius of curvature of the extra ...

Energy Citations Database

89
Early Inflation and Cosmology in Theories with Sub-Millimeter Dimensions
1999-03-15

We discuss early cosmology in theories where the fundamental Planck mass is close to the TeV scale. In such theories the standard model fields are localized to a (3 + 1)-dimensional wall with n new transverse sub-millimeter sized spatial dimensions. The topics touched upon include: early inflation that occurs while the size of the new dimensions are still ...

DOE Information Bridge

90
The 2-Center Problem in Three Dimensions
2010-12-14

Let P be a set of n points in R^3. The 2-center problem for P is to find two congruent balls of minimum radius whose union covers P. We present two randomized algorithms for computing a 2-center of P. The first algorithm runs in O(n^3 log^5 n) expected time, and the second algorithm runs in O((n^2 log^5 n) /(1-r*/r_0)^3) expected time, where r* is the ...

E-print Network

91
Power deposition profiles in Maxwellian magneto-active plasmas
1983-02-01

The numerical modeling of the microwave power deposition in a plasma for waves that are launched from an arbitrary array of pyramidal horns will be described. The waves are modeled in three dimensions with geometrical optics assuming the plasma is cold, magneto-active and Maxwellian. The power absorption at the fundamental harmonic is calculated along those rays with warm ...

Energy Citations Database

92
Hydrodynamics of an ideal aggregate with quadratically increasing permeability.
2005-05-15

In this study, we consider the ideal aggregate with quadratically increasing permeability kappa = k2r2 and derive the analytical expression of the stream function within the porous aggregate by incorporating the Brinkman and continuity equations. The hydrodynamic properties of the aggregate are investigated by taking account of the hydrodynamic radius, settling velocity, and ...

PubMed

93
Defining, Computing, and Visualizing Molecular Interfaces
1995-01-01

A parallel, analytic approach for defining and computing the inter- and intra-molecular interfaces in three dimensions is described. The molecular interface surfaces are derived from approximations to the power-diagrams over the participating molecular units. For a given molecular interface our approach can generate a family of interface surfaces parametrized by ff and fi, ...

E-print Network

94
Lumped circuit elements, statistical analysis, and radio frequency properties of electrical contact
2009-10-01

The lumped circuit elements representing electrical contact of a single and multiple contact points are constructed. The local electrical contact is assumed to be in the form of a cylindrical constriction (connecting bridge) of radius a and axial length 2h, made of the same material as the main conducting current channel of radius b. The resistance, ...

NASA Astrophysics Data System (ADS)

95
Absolute dimensions of TT Hydrae
1980-01-01

The photometric elements of the Algol type binary TT Hydrae derived from UBV observations during 1973-77 (Kulkarni and Abhyankar, 1978) have been combined with the spectroscopic elements given by Sanford (1937) and Sahade and Cesco (1946) to obtain the absolute dimensions of the system. It is found that the spectroscopic orbital elements given by Sanford represent the ...

NASA Astrophysics Data System (ADS)

96
Primordial inflation and present-day cosmological constant from extra dimensions
2002-01-01

A semiclassical gravitation model is outlined which makes use of the Casimir energy density of vacuum fluctuations in extra compactified dimensions to produce the present-day cosmological constant as ??~M8/MP4, where MP is the Planck scale and /M is the weak interaction scale. The model is based on /(4+D)-dimensional gravity, with /D=2 extra dimensions ...

NASA Astrophysics Data System (ADS)

97
Infinitely Large New Dimensions
1999-07-29

We construct intersecting brane configurations in Anti-de-Sitter space localizing gravity to the intersection region, with any number n of extra dimensions. This allows us to construct two kinds of theories with infinitely large new dimensions, TeV scale quantum gravity and sub-millimeter deviations from Newton's Law. The effective 4D Planck scale ...

Energy Citations Database

98
Non-lethal Hallermann-Streiff syndrome with bone fracture: report of a case.

The Hallermann-Streiff syndrome is characterized by bird-like face, micropthalmia, cataracts, micrognathia, beaked nose, abnormal dentition, hypotrichosis, cutaneous atrophy and proportional small stature. We present a 35-day-old patient with the classical signs except cutaneous atrophy, additionally he had a healing fracture at the proximal part of the left ...

PubMed

99
NUMBER 1 OF 1 AUTHOR QUERIES

fistula, cleft palate, shortened radius, and finger abnormalities, had been surgi- cally repaired, MRI and VEPs. Neuro- pediatrics 2003;34:219�23. 7. Hertle RW, Dell'Osso LF, FitzGibbon EJ, et al of sonic hedgehog signaling pathway. J Pediatr Surg 2001;36: 381�84. 18. Roessler E, Belloni E, Gaudenz K

E-print Network

100
Abnormal microarchitecture and reduced stiffness at the radius and tibia in postmenopausal women with fractures.
2010-06-18

Measurement of areal bone mineral density (aBMD) by dual-energy x-ray absorptiometry (DXA) has been shown to predict fracture risk. High-resolution peripheral quantitative computed tomography (HR-pQCT) yields additional information about volumetric BMD (vBMD), microarchitecture, and strength that may increase understanding of fracture susceptibility. Women with (n?=?68) and without (n?=?101) a ...

PubMed

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101
Abnormal Microarchitecture and Reduced Stiffness at the Radius and Tibia in Postmenopausal Women With Fractures
2010-06-18

Measurement of areal bone mineral density (aBMD) by dual-energy x-ray absorptiometry (DXA) has been shown to predict fracture risk. High-resolution peripheral quantitative computed tomography (HR-pQCT) yields additional information about volumetric BMD (vBMD), microarchitecture, and strength that may increase understanding of fracture susceptibility. Women with (n = 68) and without (n = 101) a ...

PubMed Central

102
The Quantum Mechanics of Two and Three Dimensional Nano-Structures
2009-03-13

Nano-science is one of the fastest growing fields in both physics and engineering. It is now possible to design and fabricate devices whose physical dimensions are on the nanometer scale and whose quantum properties can be tuned as desired. In this notebook we will study the quantum mechanics of what are known as reduced dimensional structures. A structure is said to have ...

NSDL National Science Digital Library

103
Supersymmetry Breaking Casimir Warp Drive
2007-01-30

This paper utilizes a recent model which relates the cosmological constant to the Casimir energy of the extra dimensions in brane-world theories. The objective of this paper is to demonstrate that, given some sufficiently advanced civilization with the ability to manipulate the radius of the extra dimension, a local adjustment of the ...

Energy Citations Database

104
Model Pores of Molecular Dimension
1972-08-01

Extremely uniform pores of near molecular dimension can be formed by the irradiation-etching technique first demonstrated by Price and Walker. The technique has now been developed to the stage where it can be used to fabricate model membranes for examining the various steric, hydrodynamic, and electrodynamic phenomena encountered in transport through molecular-size pores. ...

PubMed Central

105
Analytic model for the compression of plasma toroids. Final report, July-September 1990
1990-10-01

An expression for the energy required to compress a plasma toroid in the MARAUDER experiment has been derived. The analysis assumes that the plasma follows the ideal magneto-hydrodynamics approximation, that the magnetic forces are the only ones of interest, and that the toroid is in a confined equilibrium at the start and end of the compression. All dimensions of the toroid ...

Energy Citations Database

106
Three-dimensional Relativistic Magnetohydrodynamic Simulations of Current-driven Instability with a Sub-Alfv�nic Jet: Temporal Properties
2011-06-01

We have investigated the influence of a velocity shear surface on the linear and nonlinear development of the current-driven (CD) kink instability of force-free helical magnetic equilibria in three dimensions. In this study, we follow the temporal development within a periodic computational box and concentrate on flows that are sub-Alfv�nic on the cylindrical jet's axis. ...

NASA Astrophysics Data System (ADS)

107
Electrode radius predicts lesion radius during radiofrequency energy heating. Validation of a proposed thermodynamic model
1990-07-01

Myocardial heating by transcatheter delivery of radiofrequency (RF) energy has been proposed as an effective means of arrhythmia ablation. A thermodynamic model describing the radial temperature gradient at steady state during RF-induced heating is proposed. If one assumes that RF power output is adjusted to maintain a constant electrode-tissue interface temperature at all times, then this ...

Energy Citations Database

108
Capillary Rise in Granitic Rocks: Interpretation of Kinetics on the Basis of Pore Structure.
2000-02-01

The capillary transport of water into granitic rocks has been interpreted on the basis of the structure of its porous network. An effective pore radius has been calculated from a three-sized single-pore model proposed by F. A. L. Dullien, El-Sayed, and V. K. Batra (J. Colloid Interface Sci. 60, 497, 1977) Considering the porous network of granites as consisting of fissures ...

PubMed

109
The ARGUS vertex trigger
1996-02-01

A fast second level trigger has been developed for the ARGUS experiment which recognizes tracks originating from the interaction region. The processor compares the hits in the ARGUS micro vertex drift chamber to 245 760 masks stored in random access memories. The masks which are fully defined in three dimensions are able to reject tracks originating in the wall of the narrow ...

NASA Astrophysics Data System (ADS)

110
Temperature-dependent aggregation and diffusion in nanofluids Patricia E. Gharagozloo

for particle and heat transport. The predicted thermal conductivity and viscosity enhancements are compared chemical dimension j particle flux k thermal conductivity N number of particles q heat flux r radius R subjected to a heat flux of 4 W/cm2 . Fig. 5. Plot of the predicted average thermal conductivity over time

E-print Network

111
THEORY OF SHUNT-TUNED THREE-WIRE MONOPOLE
1957-10-23

A formula is developed for the driving-point admittance of a shunt-tuned three-wire monopole. The coplanar wires comprising the antenna are of the same radius and are equally spaced. The center wire is grounded. One of the outer wires is base driven; the other is base loaded by a tuning reactor. Measurements demonstrate that if one leg of a three-wire monopole is ...

Energy Citations Database

112
Strong gravitational lensing in a squashed Kaluza-Klein black hole spacetime
2010-06-01

We investigate the strong gravitational lensing in a Kaluza-Klein black hole with squashed horizons. We find the size of the extra dimension imprints in the radius of the photon sphere, the deflection angle, the angular position, and magnification of the relativistic images. Supposing that the gravitational field of the supermassive central object of the ...

NASA Astrophysics Data System (ADS)

113
String Kaluza-Klein cosmology
1994-11-01

We generalize a five-dimensional black hole solution of low energy effective string theory to arbitrary constant spatial curvature. After interchanging the signature of time and radius we reduce the five-dimensional solution to four dimensions and obtain that way a four-dimensional isotropic cosmological space time. The solution contains a dilaton, modulus ...

NASA Astrophysics Data System (ADS)

114
Spherical Polar Coordinates
2011-06-17

This applet displays a point or an volume in three dimensions using spherical coordinates. The user can change the radius and angles and move the point of view. It should be noted that the author uses a different naming convention for the angles than is common for physics in the United States, using θ for the azimuthal angle and φ for the ...

NSDL National Science Digital Library

115
Scaling behavior of single chain dimension of polystyrene sulfonate
2011-03-01

Scaling behavior of single chain of polystyrene sulfonate (PSS-) has been studied by fluorescence correlation spectroscopy. The scaling power index of the hydrodynamic radius of the PSS- single chain in aqueous solutions was found to depend on the salt condition in the solution and a systematic investigation on salt concentration and salt valency has been conducted. The ...

NASA Astrophysics Data System (ADS)

116
STEM Colorado: Random Walk
2008-11-04

This applet demonstrates random walk in two dimensions. The user can specify how many particles appear at the center of the circle and the mean free path as a fraction of the radius of the circle. The path lengths are randomized with an exponential distribution. A histogram shows the number of times each particle has been deflected before it escapes the ...

NSDL National Science Digital Library

117
Resolution de L 'equation Mutigroupe de la Diffusion Dans Une Geometrie a Une Dimension et Calculs Annexes: Code Mude (Resolution of the Mutigroup Scattering Equation in a One-Dimensional Geometry and Subsidiary Calculations: The Mude Code).
1965-01-01

It resolves a system of difference equations approximating to the one-dimensional multigroup neutron scattering problem. More precisely, this code makes it possible to: Calculate the critical condition of a reactor (k sub eff, critical radius, critical co...

National Technical Information Service (NTIS)

118
Removal of Singularities from Taylor Series
1989-08-01

A mathematical procedure is described whereby the radius of convergence of a Taylor series can be increased through the inclusion of complex poles in a rational approximation. Computer results show that this technique is quite independent of the asymptotic limit of the power series and only depends on the positions of the singularities. Aside from the applications in one ...

DOE Information Bridge

119
Radion production in exclusive processes at CERN LHC
2010-09-01

In the Randall-Sundrum scenario the compactification radius of the extra dimension is stabilized by the radion, which is a scalar field lighter than the graviton Kaluza-Klein states. It implies that the detection of the radion will be the first signature of the stabilized Randall-Sundrum model. In this paper we study the exclusive production of the radion ...

Energy Citations Database

120
RADIATION SCATTERING: Determination of the microstructure of gas bubbles in highly purified water by measuring the elements of the laser radiation scattering matrix
2009-04-01

Modulation interference microscopy and measurements of the elements of the light scattering matrix showed that doubly distilled water purified from solid impurities contains macroscopic scatterers in the form of micron clusters formed by polydisperse air bubbles with the effective radius 70-90 nm. The fractal dimension of clusters lies within 2.4-2.8 and ...

NASA Astrophysics Data System (ADS)

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121
Optimization of compact synchrotron optics for x-ray lithography
1987-03-01

The production of integrated circuits having sub-micron component dimensions has motivated the development of compact electron storage rings to provide synchrotron x-ray radiation. This paper presents considerations for optimizing the optics for small radius rings using superconducting dipole magnets. The key parameters are the sizes and angular ...

DOE Information Bridge

122
Landau Fluid Models for Magnetized Plasmas
2008-10-15

A Landau fluid model for a magnetized plasma, that retains a linear description of low-frequency kinetic effects involving transverse scales significantly smaller than the ion Larmor radius, is discussed and validated in the context of nonlinear wave dynamics. Preliminary simulations of the turbulent regime are presented in one space dimension, as a first ...

Energy Citations Database

123
Geodetic precession in squashed Kaluza-Klein black hole spacetimes
2009-11-15

We investigate the geodetic precession effect of a parallelly transported spin vector along a circular geodesic in five-dimensional squashed Kaluza-Klein black hole spacetime. Then we derive the higher-dimensional correction of the precession angle to general relativity. We find that the correction is proportional to the square of (size of extra dimension)/(gravitational ...

Energy Citations Database

124
Electron Dynamics in Metallic Nanoparticles M. Aeschlimann

on silver nanoparticles as they exhibit a particularly strong size-dependent optical resonance this technique to extract dephasing times of silver nanoparticles with radii smaller than 10nm, dimensions which of 260 meV corresponding to a decay time of 4.8 fs was extracted for silver nanoparticles with a radius

E-print Network

125
ESTIMATES OF SPERM WHALE ABUNDANCE IN THE NORTHEASTERN TEMPERATE

point because sperm whale groups have some physical dimension (in our experience up to 4 km radiusESTIMATES OF SPERM WHALE ABUNDANCE IN THE NORTHEASTERN TEMPERATE PACIFIC FROM A COMBINED ACOUSTIC whales in a 7.8 million km2 study area in the eastern temperate North Pacific using data from a ship

E-print Network

126
Dispersion relation of azimuthal electromagnetic surface waves on a magnetized plasma column in a dielectric lined slow-wave waveguide
2004-03-01

The dispersion relation of azimuthal electromagnetic surface waves on a magnetized plasma column surrounded by a metallic cylindrical dielectric lined slow-wave waveguide is obtained. The permissible frequency region for these waves in E- and B-mode is presented. Furthermore, the graphs of frequency spectra and radial dependence of fields on the external magnetic field strength, geometric ...

NASA Astrophysics Data System (ADS)

127
Design and Analysis of the DIII-D Vacuum Vessel.
1985-01-01

A key component in the recent modification by GA Technologies (GA) of its Doublet III tokamak to its current DIII-D configuration is the new dee-shaped vacuum vessel. Inside dimensions of the minor cross section are 2.85 m height, 2.43 m outer radius, and...

National Technical Information Service (NTIS)

128
COMPARISON OF TWO GENERALIZATIONS OF MAXWELL'S EQUATIONS INVOLVING CREATION OF CHARGE
1963-11-01

A comparison is made of the Lyttleton-Bondi and the Watson theories for the electromagnetic fields produced when charge is created. It is shown that, except when dimensions of the order of the radius of the Universe are involved, the difference is negligible and that consequently the Watson theory, being mathematically more simple, is the better. ...

Energy Citations Database

129
Black String Solutions with Negative Cosmological Constant
2008-09-01

We present arguments for the existence of new black string solutions with negative cosmological constant. These higher-dimensional configurations have no dependence on the 'compact' extra dimension, and their conformal infinity is the product of time and Sd-3 � R or Hd-3 � R. The configurations with an event horizon topology Sd-2 � S1 have a nontrivial, globally regular ...

NASA Astrophysics Data System (ADS)

130
A TRANSPORT CALCULATION OF THE NET CURRENT OF PHOTONS IN AN INFINITE ISOTROPICALLY SCATTERING NON-ABSORBING ATMOSPHERE
1958-03-01

Results are presented of some approximate calculations to determine the net current of photons impinging on a specimen perpendicular to a radius from the source, in the region close to the source. The solution, while reasonably valid for dimensions large compared to the mean free path, predicts photon currents smaller than are realistic near the ...

Energy Citations Database

131
Two-dimensional axisymmetric Child-Langmuir scaling law
2009-10-15

The classical one-dimensional (1D) Child-Langmuir law was previously extended to two dimensions by numerical calculation in planar geometries. By considering an axisymmetric cylindrical system with axial emission from a circular cathode of radius r, outer drift tube radius R>r, and gap length L, we further examine the space ...

Energy Citations Database

132
Theoretical investigation of penetration characteristics in gas metal-arc welding using finite element method
1995-06-01

In the modeling of the gas metal-arc (GMA) welding process, heat inputs to the workpiece by the arc and the metal transfers have been considered separately. The heat energy delivered due to the metal transfer has been approximated in the form of a cylindrical volumetric heat source, whose dimensions of the radius and the height are dependent on the molten ...

Energy Citations Database

133
Theoretical investigation of penetration characteristics in gas metal-arc welding using finite element method
1995-05-01

In the modeling of the gas metal-arc (GMA) welding process, heat inputs to the workpiece by the arc and the metal transfers have been considered separately. The heat energy delivered due to the metal transfer has been approximated in the form of a cylindrical volumetric heat source, whose dimensions of the radius and the height are dependent on the molten ...

NASA Astrophysics Data System (ADS)

134
Gravitational instability of simply rotating AdS black holes in higher dimensions
2009-02-15

We study the stability of AdS black holes rotating in a single two-plane for tensor-type gravitational perturbations in D>6 space-time dimensions. First, by an analytic method, we show that there exists no unstable mode when the magnitude a of the angular momentum is smaller than r{sub h}{sup 2}/R, where r{sub h} is the horizon radius and R is the ...

Energy Citations Database

135
Minimal universal extra dimensions in CalcHEP/CompHEP
2010-07-01

We present an implementation of the model of minimal universal extra dimensions (MUED) in CalcHEP/CompHEP. We include all level-1 and level-2 Kaluza-Klein (KK) particles outside the Higgs sector. The mass spectrum is automatically calculated at one loop in terms of the two input parameters in MUED: the inverse radius R-1 of the extra ...

NASA Astrophysics Data System (ADS)

136
Levy dusts, Mittag-Leffler statistics, mass fractal lacunarity, and perceived dimension
1997-07-01

We study the Levy dusts on the line on two accounts: the fluctuations around the average power law that characterizes the mass-radius relation for self-similar fractals, and the statistics of the intervals between strides along the logarithmic axis (their tail distribution is related to the dust`s fractal dimension). The Levy dusts are suggested as a ...

Energy Citations Database

137
Laser 40Ar/39Ar Evaluation of Slow Cooling and Episodic Loss of 40Ar from a Sample of Polymetamorphic Muscovite.
1993-09-24

Volume diffusion models predict that crystals with large diffusion dimensions can record a wide range of thermal conditions in the Earth's crust. Direct measurements of the zoning of radiogenic argon-40 in single muscovite porphyroblasts, from a complex terrain in the Vermont Appalachians, record multiple crustal events that span 150 million years. The crystal ...

PubMed

138
FCNC B{sub s} and {lambda}{sub b} transitions: Standard model versus a single universal extra dimension scenario
2008-03-01

We study the flavor changing neutral current B{sub s}{yields}{phi}{gamma}, {phi}{nu}{nu} and {lambda}{sub b}{yields}{lambda}{gamma}, {lambda}{nu}{nu} transitions in the standard model and in a scenario with a single universal extra dimension. In particular, we focus on the present knowledge of the hadronic uncertainties and on possible improvements. We discuss how the ...

Energy Citations Database

139
Exclusive B{yields}{pi}l{sup +}l{sup -} and B{yields}{rho}l{sup +}l{sup -} decays in the universal extra dimension
2009-02-01

We investigate the influence of the universal extra dimension on the branching ratio in the B{yields}{pi}({rho})l{sup +}l{sup -} decay. Taking 1/R{approx}(200-1000) GeV with one universal extra spatial dimension, which is consistent with the experimental data for B(B{yields}X{sub s}{gamma}), B(B{yields}K*{mu}{sup +}{mu}{sup -}) and the electroweak ...

Energy Citations Database

140
Estimates of crater dimensions for near-surface explosions of nuclear and high-explosive sources
1976-09-01

Crater data from numerous high-explosive (HE) experiments and from fewer nuclear explosive (NE) tests are used to develop an empirically based procedure for predicting crater dimensions from nuclear explosions in various geologic media. The HE crater data are used to rank the cratering efficiency of various geologies. NE crater data from dry soil at the Nevada Test Site and ...

DOE Information Bridge

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141
Diffusion-limited aggregation of silica microspheres in two dimensions
1985-01-01

Current wisdom from computer simulations of two-dimensional aggregation holds that the fractal dimension relating cluster mass to radius of gyration is about 1.7 when only single particles are allowed to diffuse as well. Recently, a physical realization of this situation was obtained by capturing silica microspheres (3000 A diameter) at a water surface ...

Energy Citations Database

142
Computational Study on Hemoglobin Protein Family
2009-05-01

We have analyzed 19 proteins belonging to hemoglobin protein family: 3 for plants, 4 for invertebrates and the others for vertebrates. For every protein we have determined the following parameters: the fractal dimension of its backbone, the fractal dimension of its surface, the radius of gyration, the area of its molecular surface and ...

NASA Astrophysics Data System (ADS)

143
Diagnostic accuracy of plasma NT-proBNP levels for excluding cardiac abnormalities in the very elderly
2010-11-11

BackgroundIn the elderly the diagnosis of chronic heart failure is often challenging and the availability of echocardiography can be limited. Plasma levels of NT-proBNP are valuable tools to diagnose patients with heart failure. However, the performance of this biomarker to detect cardiac abnormalities in the very elderly remains unclear. The aims of this study were to ...

PubMed Central

144
Spherical conducting probes in finite Debye length plasmas and E � B fields
2011-02-01

The particle-in-cell code SCEPTIC3D (Patacchini and Hutchinson 2010 Plasma Phys. Control. Fusion 52 035005) is used to calculate the interaction of a transversely flowing magnetized plasma with a negatively charged spherical conductor, in the entire range of magnetization and Debye length. The results allow the first fully self-consistent analysis of probe operation where neither the ion Larmor ...

NASA Astrophysics Data System (ADS)

145
Radius dependent shift in surface plasmon frequency in large metallic nanospheres: Theory and experiment
2010-06-15

Theoretical description of oscillations of electron liquid in large metallic nanospheres (with radius of few tens of nanometer) is formulated within random-phase-approximation semiclassical scheme in jellium model with retardation included via Lorentz friction. Spectrum of plasmons is determined including both surface and volume type excitations. It is demonstrated that only ...

Energy Citations Database

146
Radius dependent shift in surface plasmon frequency in large metallic nanospheres: Theory and experiment
2010-06-01

Theoretical description of oscillations of electron liquid in large metallic nanospheres (with radius of few tens of nanometer) is formulated within random-phase-approximation semiclassical scheme in jellium model with retardation included via Lorentz friction. Spectrum of plasmons is determined including both surface and volume type excitations. It is demonstrated that only ...

NASA Astrophysics Data System (ADS)

147
Awareness of body dimensions during pregnancy: an analogue study.
1977-05-01

Two alternative explanations of the body-image abnormality in anorexia nervosa patients are outlined: namely, the 'abnormal sensitivity' and 'adaptational failure' hypotheses. Evidence relating to these 2 conflicting hypotheses was obtained from body-perception measurements carried out on groups of pregnant women. In the first study 40 pregnant women, at ...

PubMed

148
Semi-Automatic Measurement of the Airway Dimension by Computed Tomography Using the Full-With-Half-Maximum Method: a Study of the Measurement Accuracy according to the Orientation of an Artificial Airway
2008-06-20

ObjectiveTo develop an algorithm to measure the dimensions of an airway oriented obliquely on a volumetric CT, as well as assess the effect of the imaging parameters on the correct measurement of the airway dimension.Materials and MethodsAn airway phantom with 11 poly-acryl tubes of various lumen diameters and wall thicknesses was scanned using a 16-MDCT ...

PubMed Central

149
Fractal dimension of non-network space of a catchment basin
2004-06-01

Topographically convex regions within a catchment basin represent varied degrees of hill-slopes. The non-network space (M), the characterization of which we address in this letter, is akin to the space that is achieved by subtracting channelized portions contributed due to concave regions from the watershed space (X). This non-network space is similar to non-channelized convex region within a ...

NASA Astrophysics Data System (ADS)

150
Comparison Theory and Smooth Minimal C*-Dynamics
2009-07-01

We prove that the C*-algebra of a minimal diffeomorphism satisfies Blackadar�s Fundamental Comparability Property for positive elements. This leads to the classification, in terms of K-theory and traces, of the isomorphism classes of countably generated Hilbert modules over such algebras, and to a similar classification for the closures of unitary orbits of self-adjoint elements. We also obtain ...

NASA Astrophysics Data System (ADS)

151
Chain dimension of polystyrene-like hyperbranched polymers with various chain end groups in THF
2009-08-01

A hyperbranched polymer (HPS-DC) synthesized using N,N-diethylamino -dithiocarbamoylstyrene as an inimer and a hyperbranched poly(4-methylstyrene) (HPS-H) prepared by hydrogenation of the HPS-DC are characterized in tetrahydrofuran (THF) solutions by static and dynamic light scattering measurements. The experimental values of z-averaged mean-square radius of gyration ...

NASA Astrophysics Data System (ADS)

152
A Prograde Gravitational Capture Model for the Origin of the Earth-Moon System: Is It Compatible with the Rock Records of the Earth and Moon
1998-01-01

Regardless of one's favorite model for the origin of the Earth Moon system, the early history of lunar orbital evolution would produce significant thermal and tidal effects on both interacting bodies. Three lunar origin models (fission, co-formation, and giant impact) feature a circular orbit that undergoes a progressive increase in orbital radius from the time of origin to ...

NASA Astrophysics Data System (ADS)

153
SN1987A Constraints on Large Compact Dimensions
1999-03-23

Recently there has been a lot of interest in models in which gravity becomes strong at the TeV scale. The observed weakness of gravitational interactions is then explained by the existence of extra compact dimensions of space, which are accessible to gravity but not to Standard Model particles. In this letter we consider graviton emission into these extra ...

DOE Information Bridge

154
The pattern electroretinogram in glaucoma: an evaluation by relative amplitude from the Bjerrum area.
1989-02-01

A new concept for evaluating the pattern electroretinogram (PERG) in glaucoma and its clinical application are described. The PERG was elicited by two different stimulus fields, namely, the whole central retinal area with a radius of 18 degrees and the paracentral ring area between the radius of 10 degrees and 18 degrees. The amplitude of the PERG for each ...

PubMed Central

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