56 research outputs found
The Design of Random Surfaces with Specified Scattering Properties: Surfaces that Suppress Leakage
We present a method for generating a one-dimensional random metal surface of
finite length L that suppresses leakage, i.e. the roughness-induced conversion
of a surface plasmon polariton propagating on it into volume electromagnetic
waves in the vacuum above the surface. Perturbative and numerical simulation
calculations carried out for surfaces generated in this way show that they
indeed suppress leakage.Comment: Revtex 6 pages (including 4 figures
Random Surfaces that Suppress Single Scattering
We present a method for generating numerically a one-dimensional random
surface, defined by the equation x_3 = \zx, that suppresses single-scattering
processes in the scattering of light from it within a specified range of
scattering angles. Rigorous numerical calculations of the scattering of light
from surfaces generated by this approach show that the single-scattering
contribution to the mean scattered intensity is indeed suppressed within that
range of angles.Comment: 3 pagers (Latex), 3 figure
Design of one-dimensional Lambertian diffusers of light
We describe a method for designing a one-dimensional random surface that acts
as a Lambertian diffuser. The method is tested by means of rigorous computer
simulations and is shown to yield the desired scattering pattern.Comment: 6 pages, 2 figure
Hyperfine interactions in titanates: Study of orbital ordering and local magnetic properties
Hyperfine magnetic fields induced on the nuclei of nonmagnetic ions 139La and 89Y in LaTiO3 and YTiO3, respectively, have been microscopically calculated. The dependence of the hyperfine fields on the orbital and magnetic structures of the compounds under study has been analyzed. The comparative analysis of the calculated and known experimental data confirms the existence of the static orbital structure in lanthanum and yttrium titanates. © 2013 Pleiades Publishing, Ltd
Theoretical Investigation of NMR Spectra in Rare-Earth Manganites
The work is aimed to theoretical investigation of orbital and magnetic structure of manganites. The orbitally-dependent exchange interaction model was used in order to describe the superexchange interaction in all range of RMnO3 (R=La, Pr, Nd, Tb, Dy, Ho) orfhorhombic compounds. The model of nearest-neighbour and next-nearest neighbour exchange was used to describe the magnetic structures of manganites with small rare-earth ion sublattice (R=Dy, Tb, Ho). We investigate different types -A, E, non-collinear - of magnetic structures. The models of NMR spectra calculation of Mn3+ ion in RMnO3 compounds are proposed. The theoretical study of the magnetic structure could distinguish The NMR-spectra of antiferromagnetic (A or E) or strongly non-collinear ordering type
Spectral Dependence of Polarized Radiation due to Spatial Correlations
We study the polarization of light emitted by spatially correlated sources.
We show that in general polarization acquires nontrivial spectral dependence
due to spatial correlations. The spectral dependence is found to be absent only
for a special class of sources where the correlation length scales as the
wavelength of light. We further study the cross correlations between two
spatially distinct points that are generated due to propagation. It is found
that such cross correlation leads to sufficiently strong spectral dependence of
polarization which can be measured experimentally.Comment: 5 pages, 4 figure
Localization of surface plasmon polaritons on a random surface
Abstract We study the possibility of the strong localization of surface plasmon polaritons propagating along a metal surface a "nite part of which is randomly rough. The surface roughness is such that the roughness-induced conversion of a surface plasmon polariton propagating on it into volume electromagnetic waves in the vacuum above the surface is suppressed
Comparison of Vacuum Treatments and Traditional Cooking Using Instrumental and Sensory Analysis
The purpose of this work was to compare carrots
with similar firmness cooked by traditional cooking and two
vacuum treatments: sous-vide (SV) and cook-vide (CV). As a
first step, consumers determined the preferred level of firmness
for carrots cooked by traditional cooking (boiling). This
level corresponded to instrumental firmness of 2.8 N in phloem
tissue and 4.1 N in xylem tissue. Response surface methodology
(RSM) established the pairing conditions of time (22
to 78 min) and temperature (78 to 92 °C) to study the effect of
both factors on the firmness of carrots with sous-vide and
cook-vide treatments. In both treatments, the instrumental
firmness of phloem and xylem samples was measured and
modeled. No significant differences were found in firmness
values between phloem and xylem tissue of samples cooked
by vacuum treatments (CVand SV). For CV treatment, firmness
decreased linearly with time and temperature, while for
SV treatment it followed a second-order model. Based on the
model, conditions of time and temperature to achieve the
preferred firmness (2.8 N) were selected for both treatments.
Finally, consumers compared the sensory properties of carrots
cooked by traditional cooking, sous-vide, and cook-vide
with paired comparison tests evaluating three pairs of
samples. Carrots cooked by cook-vide were considered
less tasty than sous-vide and traditional cooking carrots.
Carrots using traditional cooking were firmer than those
obtained with SV and CV treatments. Carrots cooked by
traditional and sous-vide treatments were preferred to
cook-vide ones for the taste.Consuelo Iborra- Bernad has received research grant from the Generalitat Valenciana. Amparo Tarrega was financially supported by the Juan de la Cierva program. Purificacion Garcia-Segovia declares that she has no conflict of interest. Javier Martinez-Monzo declares that he has no conflict of interest. This article does not contain any studies with human or animal subjects.Iborra Bernad, MDC.; Tarrega, A.; García Segovia, P.; Martínez Monzó, J. (2014). Comparison of Vacuum Treatments and Traditional Cooking Using Instrumental and Sensory Analysis. Food Analytical Methods. 7(2):400-408. doi:10.1007/s12161-013-9638-0S40040872Alasalvar C, Grigor J, Quantick P (1999) Method for the static headspace analysis of carrot volatiles. Food Chem 65:391Arcia P, Costell E, Tárrega A (2010) Thickness suitability of prebiotic dairy desserts: Relationship with rheological properties. Food Res Int 43:2409Baldwin DE (2012) Sous vide cooking: A review. 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Organization of structured interaction on the base of psychographic characteristics within the model of personality traits DISC
The paper discusses impact factors assuring the change in the efficiency of structured interaction at enterprises and in organizations. Methodological tools included a pilot study based on the model of different personality traits (DISC). Participants of the study were 47 representatives of small work teams in companies of Siberian region. The paper interprets a correlation between the efficiency of structured interaction in work teams and social personality traits. The use of training forms aimed at adjusting a social model of work teams is said to be restricted. An interrelation between team building based on psychographic traits and application of latest organization principles of structured interaction was ascertained according to analysis data
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