238 research outputs found
Arabic language skin-related stigmatization instruments: Translation and validation process
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205447.pdf (publisher's version ) (Open Access)BACKGROUND: Skin diseases are frequently the reason for social rejection. Therefore, the assessment of stigmatization level in patients suffering from dermatoses plays a crucial role in providing proper health service. OBJECTIVES: The aim of this study was to create and validate Arabic language versions of stigmatization instruments - the 6-item Stigmatization Scale and the Feelings of Stigmatization Questionnaire. MATERIAL AND METHODS: Development of the Arabic language versions was done with international standards of forward-back translations. The validation was performed on 39 psoriatic individuals. The group included 11 females and 28 males. The subjects were asked to fill out both questionnaires: the 6-item Stigmatization Scale and the Feelings of Stigmatization Questionnaire (Arabic language versions) at the time of examination and 7 days after enrollment for reassessment to evaluate test-retest reliability. During the first visit the patients additionally filled out an already existing Arabic version of Dermatology Life Quality Index (DLQI), which was used as a reference questionnaire. RESULTS: The results concerning the integrity of instruments were very good, and the Cronbach's alpha coefficient for both scales was 0.89. The reproducibility level assessed with interclass correlation coefficient (ICC) stood at 0.91 for the 6-item Stigmatization Scale and 0.92 for the Feelings of Stigmatization Questionnaire. There was a strong correlation between total score of the 6-item Stigmatization Scale and DLQI. Significant negative moderate correlation was documented between the Feelings of Stigmatization Questionnaire and DLQI. Moreover, both stigmatization instruments correlated significantly with each other. CONCLUSIONS: The developed Arabic language versions of the abovementioned stigmatization instruments can be successfully used in daily clinical practice as well as in clinical research
Fermiology and electronic homogeneity of the superconducting overdoped cuprate Tl-2201 revealed by quantum oscillations
We report an angular quantum oscillation study of Tl_2Ba_2CuO_{6+delta} for
two different doping levels (Tc = 10K and 26 K) and determine the Fermi surface
size and topology in considerable detail. Our results show that Fermi liquid
behavior is not confined to the edge of the superconducting dome and is robust
up to at least T_c^{max}/3.5. Superconductivity is found to survive up to a
larger doping p_c = 0.31 than in La_{2-x}Sr_xCuO_4. Our data imply that
electronic inhomogeneity does not play a significant role in the loss of
superconductivity and superfluid density in overdoped cuprates, and point
towards a purely magnetic or electronic pairing mechanismComment: 4 page
Influence of carbon on intraband scattering in Mg(B1-xCx)2
We report data on the Hall coefficient (RH) of the carbon substituted
Mg(B1-xCx)2 single crystals with x in the range from 0 to 0.1. The temperature
dependences of RH obtained for the substituted crystals differ systematically
at low temperatures, but all of them converge to the value of 1.8 x 10^-10
m^3/C at room temperature. The RH(T) data together with results of the
thermoelectric power and electrical resistivity measurements are interpreted
within a quasi-classical transport approach, where the presence of four
different conducting sheets is considered. The main influence of the carbon
substitution on the transport properties in the normal state is associated with
enhanced scattering rates, rather than modified concentration of charge
carriers. Presumably the carbon substitution increases the electron-impurity
scattering mainly in the pi band.Comment: 16 pages, 3 figure
Complex characterization of cotton fabric thermo physiological comfort
Paper presented at the 8th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Mauritius, 11-13 July, 2011.The main aim of this paper is evaluation of physiological
Index of Comfort IC as a complex combination of individual
fabrics properties connected with physiological comfort. The
influence of the cotton fabrics structure on the selected
parameters characterizing the physiological comfort of fabrics
is investigated as well. The structural parameters of woven
fabrics are collected into total volume porosity. Measurements
of the thermal insulation parameters are performed by the
sweating guarded hotplate test. Assessment of the air
permeability is performed according to the procedure described
in standard. The correlations between total volume porosity and
above mentioned properties influencing the physiological
comfort are investigated.pm201
Evidence for a charge Kondo effect in Pb(1-x)Tl(x)Te from measurements of thermoelectric power
We report measurements of the thermoelectric power (TEP) for a series of
Pb(1-x)Tl(x)Te crystals with x = 0.0 to 1.3%. Although the TEP is very large
for x = 0.0, using a single band analysis based on older work for dilute
magnetic alloys we do find evidence for a Kondo contribution of 11 - 18 uV/K.
This analysis suggests that Tk is ~ 50 - 70 K, a factor 10 higher than
previously thought.Comment: 4 pages, 3 figure
The Impact of a 48-Hour Fast on Mitochondrial Biogenesis in Young Healthy Men
Please view abstract in the attached PDF fil
Evidence of spin-density-wave order in RFeAsO from measurements of thermoelectric power
Data on the magneto-thermopower and specific heat of three compounds
belonging to '1111' oxypnictides family are reported. One specimen
(SmAsFeO0.8F0.2) is a superconductor with Tc = 53 K, while two others (SmAsFeO
and NdAsFeO) are nonsuperconducting parent compounds. Our results confirm that
spin density wave (SDW) order is present in SmAsFeO and NdAsFeO. In these two
samples a strict connection between the thermoelectric power and electronic
specific heat is found in the vicinity of SDW transition, what indicates that
the chemical potential of charge carriers strongly depends on temperature in
this region. Low temperature data suggest presence of significant contribution
magnon-drag to the thermoelectric power.Comment: 14 pages, 5 figures; adjusted to referees' suggestions; to appear in
Phys. Rev.
Pseudogap phase of cuprate superconductors confined by Fermi surface topology
The properties of cuprate high-temperature superconductors are largely shaped
by competing phases whose nature is often a mystery. Chiefly among them is the
pseudogap phase, which sets in at a doping that is material-dependent.
What determines is currently an open question. Here we show that the
pseudogap cannot open on an electron-like Fermi surface, and can only exist
below the doping at which the large Fermi surface goes from hole-like
to electron-like, so that . We derive this result from
high-magnetic-field transport measurements in
LaNdSrCuO under pressure, which reveal a large and
unexpected shift of with pressure, driven by a corresponding shift in
. This necessary condition for pseudogap formation, imposed by details
of the Fermi surface, is a strong constraint for theories of the pseudogap
phase. Our finding that can be tuned with a modest pressure opens a new
route for experimental studies of the pseudogap.Comment: 15 pages, 5 figures, 7 supplemental figure
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