902 research outputs found
Electronic phase diagram of LaBaSrCuO
We performed systematic measurements of magnetic susceptibility on single
crystals of LaBaSrCuO. The dependence of the
superconducting transition temperature on Sr-concentration demonstrates a
step-like pattern upon doping at {\it x}0.08 as the crystal structure
changes from low-temperature tetragonal (LTT) to low-temperature orthorhombic
(LTO) phase at low temperature. Upon cooling, an anomalous upturn in the
susceptibility was observed at the structural phase transition between the
LTT-LTO phases under the magnetic field parallel to {\it c}-axis.Comment: 6 pages, 4 figures, Proceeding paper of the Stripes2000 conference in
Roma, Ital
Colloidal Assemblies of Oriented Maghemite Nanocrystals and their NMR Relaxometric Properties
Elevated-temperature polyol-based colloidal-chemistry approach allows for the
development of size-tunable (50 and 86 nm) assemblies of maghemite iso-oriented
nanocrystals, with enhanced magnetization. 1H-Nuclear Magnetic Resonance (NMR)
relaxometric experiments show that the ferrimagnetic cluster-like colloidal
entities exhibit a remarkable enhancement (4 to 5 times) in the transverse
relaxivity, if compared to that of the superparamagnetic contrast agent
Endorem, over an extended frequency range (1-60 MHz). The marked increase of
the transverse relaxivity r2 at a clinical magnetic field strength (1.41 T),
which is 405.1 and 508.3 mM-1 s-1 for small and large assemblies respectively,
allows to relate the observed response to the raised intra-aggregate magnetic
material volume fraction. Furthermore, cell tests with murine fibroblast
culture medium confirmed the cell viability in presence of the clusters. We
discuss the NMR dispersion profiles on the basis of relaxivity models to
highlight the magneto-structural characteristics of the materials for improved
T2-weighted magnetic resonance images.Comment: Includes supporting informatio
Social Media Battles: their Impact during the 2014 Greek Municipal Elections
The purpose of this study is to examine the use of social media such as Facebook, Twitter, and YouTube by candidates running for the 2014 Greek Municipal Elections by addressing the following questions: (1) which factors affect social media adoption by municipal candidates?, and (2) whether social media usage along with the popularity of candidates' social media pages influence candidates' vote share. Results indicate that social media are not very popular campaigning tools among municipal candidates in Greece. This implies that Greek candidates still rely on traditional ways to lure their voters. Furthermore, findings reveal that candidates running in large municipalities are more likely to utilize social media (i.e., Facebook, Twitter, and YouTube) as means of political marketing. In addition, challengers seem to prefer Facebook and Twitter as campaign tools while males tend to focus on YouTube to attract voters. Despite the low adoption rate, results suggest that candidates who made use of social media won more votes compared to candidates who were not social media users. Moreover, it was found that a candidate's Facebook page and YouTube channel popularity are good indicators of the candidate's vote share
P 419 Comparison of tight junctions permeability and modulation in iris pigment epithelium and retinal pigment epithelium in vitro
Amb una superfΓcie: 0,61 ha, de basalt i aigua nebulitzada.BarragΓ‘n, Pedro (dissenyador)Gran pla general de El VolcΓ ,conegut com la Carbonera. El carbΓ³ calent era mullat per aigua subterrΓ nia i desprenia vapor. Actualment estΓ inactiu. Destaquen el pg. Josep Carner amb el monument a Colom i els edificis de Capitania i Duana
Magnetic versus nonmagnetic doping effects on the magnetic ordering in the Haldane chain compound PbNi2V2O8
A study of an impurity driven phase-transition into a magnetically ordered
state in the spin-liquid Haldane chain compound PbNi2V2O8 is presented. Both,
macroscopic magnetization as well as 51V nuclear magnetic resonance (NMR)
measurements reveal that the spin nature of dopants has a crucial role in
determining the stability of the induced long-range magnetic order. In the case
of nonmagnetic (Mg2+) doping on Ni2+ spin sites (S=1) a metamagnetic transition
is observed in relatively low magnetic fields. On the other hand, the magnetic
order in magnetically (Co2+) doped compounds survives at much higher magnetic
fields and temperatures, which is attributed to a significant anisotropic
impurity-host magnetic interaction. The NMR measurements confirm the predicted
staggered nature of impurity-liberated spin degrees of freedom, which are
responsible for the magnetic ordering. In addition, differences in the
broadening of the NMR spectra and the increase of nuclear spin-lattice
relaxation in doped samples, indicate a diverse nature of electron spin
correlations in magnetically and nonmagnetically doped samples, which begin
developing at rather high temperatures with respect to the antiferromagnetic
phase transition.Comment: 10 pages, 7 figure
Π£ΠΏΡΠΎΡΠ΅Π½Π½Π°Ρ ΡΠΈΡΡΠ΅ΠΌΠ° ΡΡΠ΅ΡΠ° ΠΈ Π½Π°Π»ΠΎΠ³ΠΎΠΎΠ±Π»ΠΎΠΆΠ΅Π½ΠΈΡ
ΠΠ±ΡΡΠΌ ΡΠ°Π±ΠΎΡΡ β 76 Ρ., ΠΈΠ»Π»ΡΡΡΡΠ°ΡΠΈΠΉ β 2, ΡΠ°Π±Π»ΠΈΡ β 12, ΡΠΎΡΠΌΡΠ» β 2, ΠΈΡΡΠΎΡΠ½ΠΈΠΊΠΎΠ² β 52.
ΠΠΊΡΡΠ°Π»ΡΠ½ΠΎΡΡΡ Π²ΡΠ±ΡΠ°Π½Π½ΠΎΠΉ ΡΠ΅ΠΌΡ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ Π·Π°ΠΊΠ»ΡΡΠ°Π΅ΡΡΡ Π² ΡΠ½ΠΈΠΊΠ°Π»ΡΠ½ΠΎΡΡΠΈ ΠΠΠΠ, ΠΊΠ°ΠΊ Π½Π΅ΠΊΠΎΠΌΠΌΠ΅ΡΡΠ΅ΡΠΊΠΈΡ
ΠΎΡΠ³Π°Π½ΠΈΠ·Π°ΡΠΈΠΉ, ΠΏΠΎΠ΄Π»Π΅ΠΆΠ°ΡΠΈΡ
ΡΠΏΡΠΎΡΠ΅Π½Π½ΠΎΠΉ ΡΠΈΡΡΠ΅ΠΌΠ΅ Π½Π°Π»ΠΎΠ³ΠΎΠΎΠ±Π»ΠΎΠΆΠ΅Π½ΠΈΡ, Π½Π΅ΡΠΌΠΎΡΡΡ Π½Π° Π½Π°Π»ΠΈΡΠΈΠ΅ Π² Π½ΠΈΡ
ΠΊΡΠ΅Π΄ΠΈΡΠΎΡΡΠΊΠΎΠΉ Π΄Π΅ΡΡΠ΅Π»ΡΠ½ΠΎΡΡΠΈ.
ΠΠ±ΡΠ΅ΠΊΡΠΎΠΌ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΡΠ²Π»ΡΠ΅ΡΡΡ ΠΊΡΠ΅Π΄ΠΈΡΠ½ΠΎ-ΠΏΠΎΡΡΠ΅Π±ΠΈΡΠ΅Π»ΡΡΠΊΠΈΠΉ ΠΊΠΎΠΎΠΏΠ΅ΡΠ°ΡΠΈΠ² Π³ΡΠ°ΠΆΠ΄Π°Π½ Β«Π’ΡΠ°Π΄ΠΈΡΠΈΡΒ».
ΠΡΠ΅Π΄ΠΌΠ΅Ρ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ β ΡΠΏΡΠΎΡΠ΅Π½Π½Π°Ρ ΡΠΈΡΡΠ΅ΠΌΠ° Π½Π°Π»ΠΎΠ³ΠΎΠΎΠ±Π»ΠΎΠΆΠ΅Π½ΠΈΡ ΠΠΠΠ.
Π¦Π΅Π»Ρ ΠΠΠ β ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ ΡΡΡΠ½ΠΎΡΡΠΈ ΠΈ ΠΏΡΠ°ΠΊΡΠΈΠΊΠΈ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ ΡΠΏΡΠΎΡΠ΅Π½Π½ΠΎΠΉ ΡΠΈΡΡΠ΅ΠΌΡ Π½Π°Π»ΠΎΠ³ΠΎΠΎΠ±Π»ΠΎΠΆΠ΅Π½ΠΈΡ ΠΏΠΎΡΡΠ΅Π±ΠΈΡΠ΅Π»ΡΡΠΊΠΈΡ
ΠΊΡΠ΅Π΄ΠΈΡΠ½ΡΡ
ΠΊΠΎΠΎΠΏΠ΅ΡΠ°ΡΠΈΠ²ΠΎΠ² Π³ΡΠ°ΠΆΠ΄Π°Π½ Π½Π° ΠΏΡΠΈΠΌΠ΅ΡΠ΅ ΠΠΠΠ Β«Π’ΡΠ°Π΄ΠΈΡΠΈΡΒ».Volume of work - 76, illustration -. 2, tables - 12, formulas - 2, sources - 52.
The relevance of the chosen research topic is unique CCCC as non-profit organizations are subject to a simplified system of taxation, despite the presence of accounts activity.
The object of this study is to credit and consumer cooperative citizens "Tradition".
Subject of research - the simplified taxation system CCCC.
The purpose of the WRC - study the nature and practice of application of the simplified tax system consumer credit cooperatives of citizens the example of CCCC "Tradition"
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