Mott-hadron resonance gas and lattice QCD thermodynamics

We present an effective model for the generic behaviour of hadron masses and phase shifts at finite temperature which shares basic features with recent developments within the PNJL model for correlations in quark matter. On this basis we obtain the transition between a hadron resonance gas phase and the quark gluon plasma in the spirit of the generalized Beth-Uhlenbeck approach where the Mott dissociation of hadrons is encoded in the hadronic phase shifts. Here we restrict ourselves to low-lying hadronic channels and perform a discussion of recent lattice QCD thermodynamics results from this perspective. We find agreement in the asymptotic regions while for the description of the transition itself the inclusion of further hadronic channels as well as a selfconsistent determination of the continuum thresholds is required.Comment: 10 pages, 3 figures, typo in Eq. (9) correcte

Single-exposure full-field multi-depth imaging using low-coherence holographic multiplexing

We present a new interferometric imaging approach that allows for multiple-depth imaging in a single acquisition, using off-axis low-coherence holographic multiplexing. This technique enables sectioned imaging of multiple slices within a thick sample, in a single image acquisition. Each slice has a distinct off-axis interference fringe orientation indicative of its axial location, and the camera acquires the multiplexed hologram containing the different slices at once. We demonstrate the proposed technique for amplitude and phase imaging of optically thick samples

Simultaneous three-wavelength unwrapping using external digital holographic multiplexing module

We present an external interferometric setup that is able to simultaneously acquire three wavelengths of the same sample instance without scanning or multiple exposures. This setup projects onto the monochrome digital camera three off-axis holograms with rotated fringe orientations, each from a different wavelength channel, without overlap in the spatial-frequency domain, and thus allows the full reconstruction of the three complex wavefronts from the three wavelength channels. We use this new setup for three-wavelength phase unwrapping, allowing phase imaging of thicker objects than possible with a single wavelength, but without the increased level of noise. We demonstrate the proposed technique for micro-channel profiling and label-free cell imaging.Comment: https://www.osapublishing.org/ol/abstract.cfm?uri=ol-43-9-194

Pion Number Fluctuations and Correlations in the Statistical System with Fixed Isospin

The statistical system of pions with zero total isospin is studied. The suppression effects for the average yields due to isospin conservation are the same for $\pi^0$, $\pi^+$ and $\pi^-$. However, a behavior of the corresponding particle number fluctuations are different. For neutral pions there is the enhancement of the fluctuations, whereas for charged pions the isospin conservation suppresses fluctuations. The correlations between the numbers of charged and neutral pions are observed for finite systems. This causes a maximum of the total pion number fluctuations for small systems. The thermodynamic limit values for the scaled variances of neutral and charged pions are calculated. The enhancements of the fluctuations due to Bose statistics are found and discussed

Flotation sylvite from potash ores at elevated temperatures

In laboratory terms conducted research on the selection of factious composition amine and assortment components of collective mixture, optimal for flotation of sylvine at the temperature of fallopian solution 40°С, brands and charges of reagents are certain, are conducted the comparative tests of charts of joint and separate flotation of sylvine from ores 1–3 mine managements of JSC “Belaruskali” in the conditions of enhanceable temperatures

The canonical partition function for relativistic hadron gases

Particle production in high-energy collisions is often addressed within the framework of the thermal (statistical) model. We present a method to calculate the canonical partition function for the hadron resonance gas with exact conservation of the baryon number, strangeness, electric charge, charmness and bottomness. We derive an analytical expression for the partition function which is represented as series of Bessel functions. Our results can be used directly to analyze particle production yields in elementary and in heavy ion collisions. We also quantify the importance of quantum statistics in the calculations of the light particle multiplicities in the canonical thermal model of the hadron resonance gas.Comment: 10 pages, 2 figures; submitted for publication in EPJ

Small innovative business development experience

The article deals with the study of the experience and impact of establishing micro, small and medium-sized businesses, including innovative enterprises, in developed countries of Europe, the USA, and Russia, their development dynamics, as well as tools ensuring government regulation of their effective functioning. In Russia, the right to establish small innovative enterprises was granted by Federal Law No. 217-FZ dated August 2, 2009. The article provides quantitative statistics of the accounting of small innovative enterprises operating in the scientific and educational sector of Russia’s economy and the economic indicators of their activities, obtained based on monitoring results. The article also analyzes the US legislation in the innovation field. The research allowed us to come to the following key conclusions: Micro, small, and medium-sized businesses play an important role in the European and American economies, being the most important source of innovation and new jobs. In Russia, further development of a mechanism for commercialization of intellectual results requires improvement in terms of harmonization with international rules. The foreign legislative experience with respect to micro, small and medium-sized businesses is of particular interest for the improvement of the regulatory framework that would ensure the effective operation of small innovative enterprises in Russia.peer-reviewe

Hard-core Radius of Nucleons within the Induced Surface Tension Approach

In this work we discuss a novel approach to model the hadronic and nuclear matter equations of state using the induced surface tension concept. Since the obtained equations of state, classical and quantum, are among the most successful ones in describing the properties of low density phases of strongly interacting matter, they set strong restrictions on the possible value of the hard-core radius of nucleons. Therefore, we perform a detailed analysis of its value which follows from hadronic and nuclear matter properties and find the most trustworthy range of its values: the hard-core radius of nucleons is 0.30--0.36 fm. A comparison with the phenomenology of neutron stars implies that the hard-core radius of nucleons has to be temperature and density dependent.Comment: 12 pages, 4 figures, references added, typos correcte