New atlas of open star clusters

Due to numerous new discoveries of open star clusters in the last two decades, astronomers need an easy-to-use resource to get visual information on the relative position of clusters in the sky. Therefore we propose a new atlas of open star clusters. It is based on a table compiled from the largest modern cluster catalogues. The atlas shows the positions and sizes of 3291 clusters and associations, and consists of two parts. The first contains 108 maps of 12 by 12 degrees with an overlapping of 2 degrees in three strips along the Galactic equator. The second one is an online web application, which shows a square field of an arbitrary size, either in equatorial coordinates or in galactic coordinates by request. The atlas is proposed for the sampling of clusters and cluster stars for further investigation. Another use is the identification of clusters among overdensities in stellar density maps or among stellar groups in images of the sky. © 2017 A. F. Seleznev et al.Acknowledgment: The work of Anton F. Seleznev was partly supported by the Ministry of Education and Science (the basic part of the State assignment, RK no. AAAA-A17-117030310283-7). The work of Anton F. Seleznev and of Eka-terina Avvakumova was supported also by the Act no. 211 of the Government of the Russian Federation, agreement no. 02.A03.21.0006. Authors are very grateful to Tatiana Selezneva for the graphic design of the web application

Tuning of the size and the lattice parameter of ion-beam synthesized Pb nanoparticles embedded in Si

The size and lattice constant evolution of Pb nanoparticles (NPs) synthesized by high fluence implantation in crystalline Si have been studied with a variety of experimental techniques. Results obtained from small-angle x-ray scattering showed that the Pb NPs grow with increasing implantation fluence and annealing duration. The theory of NP growth kinetics can be applied to qualitatively explain the size evolution of the Pb NPs during the implantation and annealing processes. Moreover, the lattice constant of the Pb NPs was evaluated by conventional x-ray diffraction. The lattice dilatation was observed to decrease with increasing size of the Pb NPs. Such lattice constant tuning can be attributed to the pseudomorphism caused by the lattice mismatch between the Pb NPs and the Si matrix

Tuning of the size and the lattice parameter of ion-beam synthesized Pb nanoparticles embedded in Si

The size and lattice constant evolution of Pb nanoparticles (NPs) synthesized by high fluence implantation in crystalline Si have been studied with a variety of experimental techniques. Results obtained from small-angle x-ray scattering showed that the Pb NPs grow with increasing implantation fluence and annealing duration. The theory of NP growth kinetics can be applied to qualitatively explain the size evolution of the Pb NPs during the implantation and annealing processes. Moreover, the lattice constant of the Pb NPs was evaluated by conventional x-ray diffraction. The lattice dilatation was observed to decrease with increasing size of the Pb NPs. Such lattice constant tuning can be attributed to the pseudomorphism caused by the lattice mismatch between the Pb NPs and the Si matrix

Фактическая эпидемиологическая эффективность оценки и совершенствования системы обеспечения эпидемиологической безопасности медицинской помощи катетеризированным пациентам

The basis of optimized conventional system of surveillance and control for catheter-related bloodstream infections (CRBI) was priority in detection and risk assessment an infectious complication of puncture catheterization that substantially justified with inclusion of two main components as an addition to the existing system: monitoring of puncture catheterization, which allows to obtain and analyze data on risk factors for infections associated with the catheterization procedure and subsequent manipulations of the device, standardize approaches to working with a venous catheter and improve the diagnosis of CRBI; assessment of ensuring the epidemiological safety of medical care for catheterized patients. Epidemiological efficiency risk-based surveillance, primarily determined to reduce the incidence of CRBI by 1.8 times compared to initially defined real incidence: 12.5‰ (95% CI — CI 11,8–13 2) vs 22.8‰ (95% CI 21,1–24,5) catheterized patients, p=0.0001.Базисом оптимизированной традиционной системы эпидемиологического надзора и контроля катетер-ассоциированных инфекций кровотока (КАИК) стал принцип первоочередности выявления и оценки риска возникновения инфекционного осложнения пункционной катетеризации, что практически оправдано включением двух основных компонентов как дополнение к существующей системе: мониторинг пункционной катетеризации, который позволяет получать и анализировать данные о факторах риска возникновения инфекций, связанных с процедурой катетеризации и последующими манипуляциями по эксплуатации устройства, стандартизировать подходы к работе с венозным катетером и усовершенствовать диагностику КАИК; оценка обеспечения эпидемиологической безопасности оказания медицинской помощи катетеризированным пациентам. Эпидемиологическая эффективность риск-ориентированного эпидемиологического надзора, в первую очередь, определялась по снижению уровня заболеваемости КАИК в 1,8 раза по сравнению с исходно определенным реальным уровнем заболеваемости: 12,5‰ (95% доверительный интервал — ДИ 11,8–13,2) vs 22,8‰ (95% ДИ 21,1–24,5) катетеризированных пациентов, p=0,0001

Mechanisms of reabsorption of ions in the Henle’s loop and furosemide pharmacodynamics

The article explains mechanisms of reabsorption of ions in the thick segment of the ascending limb of Henle’s loop. The principle of action of one of the key representatives of "loop" diuretics, Furosemide, is examinedВ статье дается объяснение механизмов реабсорбции ионов в толстой части восходящего колена петли Генле. Рассматривается принцип действия одного из ключевых представителей «петлевых» диуретиков – фуросемида

Synthesis, characterization, and crystal structure of dominant uranium(V) brannerites in the UTi2–xAlxO6 system

The synthesis, characterization, and crystal structure of a novel (dominant) uranium(V) brannerite of composition U1.09(6)Ti1.29(3)Al0.71(3)O6 is reported, as determined from Rietveld analysis of the high-resolution neutron powder diffraction data. Examination of the UTi2–xAlxO6 system demonstrated the formation of brannerite-structured compounds with varying Al3+ and U5+ contents, from U0.93(6)Ti1.64(3)Al0.36(3)O6 to U0.89(6)Ti1.00(3)Al1.00(3)O6. Substitution of Al3+ for Ti4+, with U5+ charge compensation, resulted in near-linear changes in the b and c unit cell parameters and the overall unit cell volume, as expected from ionic radii considerations. The presence of U5+ as the dominant oxidation state in near-single-phase brannerite compositions was evidenced by complementary laboratory U L3-edge and high-energy-resolution fluorescence-detected U M4-edge X-ray absorption near-edge spectroscopy. No brannerite phase was found for compositions with Al3+/Ti4+ > 1, which would require a U6+ contribution for charge compensation. These data expand the crystal chemistry of uranium brannerites to the stabilization of dominant uranium(V) brannerites by the substitution of trivalent cations, such as Al3+, on the Ti4+ site

The Actual Epidemiological Effectiveness of Assessing and Improving the System for Ensuring the Epidemiological Safety of Medical Care for Catheterized Patients

The basis of optimized conventional system of surveillance and control for catheter-related bloodstream infections (CRBI) was priority in detection and risk assessment an infectious complication of puncture catheterization that substantially justified with inclusion of two main components as an addition to the existing system: monitoring of puncture catheterization, which allows to obtain and analyze data on risk factors for infections associated with the catheterization procedure and subsequent manipulations of the device, standardize approaches to working with a venous catheter and improve the diagnosis of CRBI; assessment of ensuring the epidemiological safety of medical care for catheterized patients. Epidemiological efficiency risk-based surveillance, primarily determined to reduce the incidence of CRBI by 1.8 times compared to initially defined real incidence: 12.5‰ (95% CI — CI 11,8–13 2) vs 22.8‰ (95% CI 21,1–24,5) catheterized patients, p=0.0001

Influence of polydispersity on the phase behavior of colloidal goethite

The effect of fractionation on the phase behavior of colloidal goethite dispersions with different polydispersities (17%, 35%, and 55% in length) has been studied by small angle x-ray scattering and transmission electron microscopy. All systems show at least nematic and smectic phases. The occurrence of the latter phase at such a high polydispersity is remarkable. It is shown that in the highly polydisperse systems strong fractionation occurs, which is able to reduce the local length polydispersity up to a factor of 2. A columnar phase was only found in the 35% and 55% polydisperse systems. It seems that the columnar phase accommodates the particles that do not fit into the smectic layers and, thus, reduces the length polydispersity within the smectic phase even further. The fact that a columnar phase was not found in the system of lowest polydispersity indicates that the smectic phase is the most stable phase at higher concentrations