208 research outputs found
Correlation analysis between inflammatory biomarkers and significant clinical phenotypes of chronic obstructive pulmonary disease
The correlation analysis revealed very strong relationships between the levels of all the bi-omarkers studied. The highest values of the Kendall rank correlation coefficient (τ) were determined be-tween the levels of all the inflammatory biomarkers in subgroups of patients with chronic bronchitis and mixed COPD phenotype
Primary Energy Spectrum and Mass Composition Determined with the Tunka EAS Cherenkov Array
New results of 300 hours of operation of the Tunka array are presented.
An improved parametrization of the Cherenkov light lateral distribution
function (LDF), based on CORSIKA Monte Carlo simulations and the experiment
QUEST, has been used for the reconstruction of EAS parameters. The corrected
energy spectrum in the knee region is obtained. The mean depth of the EAS
maximum has been derived both from the analysis of LDF steepness and the FWHM
of Cerenkov light pulse. The mean mass composition around the knee is
estimated.Comment: 3 pages, 3 figures, to be published in IJMP
The Tunka Experiment: Towards a 1-km^2 Cherenkov EAS Array in the Tunka Valley
The project of an EAS Cherenkov array in the Tunka valley/Siberia with an
area of about 1 km^2 is presented. The new array will have a ten times bigger
area than the existing Tunka-25 array and will permit a detailed study of the
cosmic ray energy spectrum and the mass composition in the energy range from
10^15 to 10^18 eV.Comment: 3 pages, 2 figures, to be published in IJMP
Investigation of LiFeAs by means of "Break-junction" Technique
In our tunneling investigation using Andreev superconductor - normal metal -
superconductor contacts on LiFeAs single crystals we observed two reproducible
independent subharmonic gap structures at dynamic conductance characteristics.
From these results, we can derive the energy of the large superconducting gap
meV and the small gap meV at
K for the K (the contact area
critical temperature which deviation causes the variation of ). The
BCS-ratio is found to be , whereas
results from induced superconductivity in the bands
with the small gap.Comment: 7 pages, 5 figures. Published in Pis'ma v ZhETF 95, 604-610 (2012
Observation of Multi-Gap Superconductivity in GdO(F)FeAs by Andreev Spectroscopy
We have studied current-voltage characteristics of Andreev contacts in
polycrystalline GdOFFeAs samples with bulk critical
temperature = (52.5 \pm 1)K using break-junction technique. The data
obtained cannot be described within the single-gap approach and suggests the
existence of a multi-gap superconductivity in this compound. The large and
small superconducting gap values estimated at T = 4.2K are {\Delta}L = 10.5 \pm
2 meV and {\Delta}S = 2.3 \pm 0.4 meV, respectively.Comment: 5 pages, 4 figures, submitted to JETP Letter
The Lake Baikal neutrino experiment: selected results
We review the present status of the lake Baikal Neutrino Experiment and
present selected physical results gained with the consequetive stages of the
stepwise increasing detector: from NT-36 to NT-96. Results cover atmospheric
muons, neutrino events, very high energy neutrinos, search for neutrino events
from WIMP annihilation, search for magnetic monopoles and environmental
studies. We also describe an air Cherenkov array developed for the study of
angular resolution of NT-200.Comment: 25 pages, 12 figures. To appear in the Procrrdings of International
Conference on Non-Accelerator New Physics, June 28 - July 3, 1999, Dubna,
Russi
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