On 82 patients with suppurative puerperal mastitis, in 25 (30.5%) the disorders in function of the cardiovascular system were revealed. The disorders directly depended on the severity of the disease. ...After the therapy carried out with inclusion of the drugs improving myocardial metabolism, in repeated ECG, the significant positive dynamics was noted.
The depth profiles of cosmogenic isotopes in the lunar regolith depend on the flux and spectrum of Galactic and solar cosmic rays (GCRs and SCRs) and, therefore, depend on solar activity on a time ...scale comparable to the lifetime of these isotopes. In this work, we analyzed the content of various radionuclides (
14
C,
26
Al,
10
Be, and
53
Mn) in samples obtained by the Apollo 15 mission. Comparing the results of modeling performed for the average GCR flow using the GEANT4.10 package with experimental data, we obtained a correction factor for the calculated formation rates of
Y
0
~ 0.6 for all the considered radionuclides. We attribute this result to the overestimated value of the flux of secondary particles in the lunar soil in the calculation using the GEANT4.10 package. This conclusion is supported by independent laboratory experiments. The estimated
10
Be depth profile can be consistent with the experimental data only if the additional (apart from the GCR) contribution of protons accelerated on the shock wave from a nearby supernova ~2.5 million years ago is taken into account. We also calculated the
53
Mn depth profile (with the longest half-life of those we considered), which can also be described taking the contribution of the supernova into account. We note that three long-lived isotopes,
26
Al,
10
Be, and
53
Mn, with different half-lives were modeled with the same average modulation potential. This allowed us to conclude that solar activity did not undergo noticeable changes on a time scale of about 10 million years.
The Tunka-133 EAS Cherenkov light array: Status of 2011 Berezhnev, S.F.; Besson, D.; Budnev, N.M. ...
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
11/2012, Letnik:
692
Journal Article
Recenzirano
Odprti dostop
A new EAS Cherenkov light array, Tunka-133, with ∼1km2 geometrical area has been installed at the Tunka Valley (50km from Lake Baikal) in 2009. The array permits a detailed study of cosmic ray energy ...spectrum and mass composition in the energy range 1016–1018eV with a uniform method. We describe the array construction, DAQ and methods of the array calibration. The method of energy reconstruction and absolute calibration of measurements are discussed. The analysis of spatial and time structure of EAS Cherenkov light allows to estimate the depth of the EAS maximum Xmax.
The results on the all particles energy spectrum and the mean depth of the EAS maximum Xmax vs. primary energy derived from the data of two winter seasons (2009–2011) are presented. Preliminary results of joint operation of the Cherenkov array with antennas for the detection of EAS radio signals are shown. Plans for future upgrades – deployment of remote clusters, radioantennas and a scintillator detector network and a prototype of the HiSCORE gamma-telescope – are discussed.
Forest fires are one of the most powerful factors, not only in Russia, but all over the world. It affects the structure of ecosystems and causes the landscape transformations in it. In Crimea, the ...'Krymskiy' National Park, where research was conducted, is a major keeper of population natural forests. Post-pyrogenic changes in vegetation cover were studied in pine phytocenoses (Pinus sylvestris L., Pinus pallasiana D. Don.) and juniper phytocenoses (Juniperus communis subsp. hemisphaerica C. Presl., Juniperus sabina L.). The investigated areas were covered by fire different intensivity 2-37 years ago. It was found that the surface fires damages all elements of the forest phytocenosis. The juniper forests burn down completely and have not recovered in a period of up to 20 years. Forest fires cause secondary post-fire (pyrogenic) regressive succession in the mountain forests of Crimea. Herbaceous plants appear on the investigated sample areas where the forest is burnt: violent competitor plants (K-plants); stress-resistant plants (C-plants) and ruderal plants (P-plants), as well as - plants-pyrophytes. In the first years after a forest fire, the herbaceous plant community is more diverse and aligned. In subsequent years, the number of species decreases, and the index alpha plant diversity value also decreases.
Single crystals of furan/phenylene co-oligomers are among the most promising highly-emissive materials for applications in various optoelectronic devices. In this work, we synthesized and studied ...furan/phenylene co-oligomers with the same conjugated core 1,4-bis(5-phenylfuran-2-yl)benzene and methyl substituents at p- and m-positions of the terminal phenyls. The effect of substituents on the crystal packing, charge transport and luminescence of the single crystals was studied. Compared to the unsubstituted compound, the methyl-substituted co-oligomers demonstrated improved thermostability and enhanced photoluminescence, which we assign to J-aggregation resulting from the strong inclination of the molecules against the main crystal facet. The charge mobility in single crystal organic field-effect transistors decreased upon the inclination of the molecules. We conclude that the molecular tilt angle, intermolecular distances and interactions in crystals of heteroaryl-containing linear conjugated oligomers can be controlled by the introduction of end methyl groups in the appropriate positions.
Patients with both interrupted aortic arch (IAA) and truncus arteriosus (TA) have worse outcomes than those with either lesion in isolation. We determined outcomes and associated factors in this rare ...group.
From 1987 to 1997, 50 (11%) of 472 neonates with IAA were identified with TA. Site of aortic arch interruption was distal to the left subclavian artery in 16% and between the left common carotid and subclavian artery in 84%. From the common arterial trunk, the pulmonary arteries arose from a main pulmonary trunk in 46%, common orifice in 22%, and separate orifices in 32%. At presentation, truncal valve stenosis was present in 12% and regurgitation in 22%.
There were 34 deaths, with a single early hazard phase. Overall survival from admission was 44%, 39%, and 31% at 6 months, 1 year, and 10 years, respectively. One patient had primary cardiac transplantation and 4 died without any intervention. The IAA repair alone was performed in 7 patients, with single stage repair of both IAA and TA in 38 patients. Associated factors for overall time-related death include female gender (
p < 0.001), type III TA (
p < 0.001) and one institution (low-risk;
p < 0.001). Results improved somewhat over time (
p < 0.001). At 5 years after IAA repair only 28% were alive without arch repair intervention, and at 5 years after TA repair only 18% were alive without conduit reoperation.
The combination of IAA and TA carries high early mortality, with high risk of reinterventions in survivors. One stage repair of both TA and IAA is the optimal management.
PDF
