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The complex biological starter (biopreservative) “Silo Twice” is related to microbiology in feed production, in particular to the technology for obtaining complex biopreservatives - preparations used for silage of feed. In the finished biopreservative fermented Silo Twice product, all nutrients of the starting material are preserved and the relative value of the feed has increased 17 units. Compared to the classic self-preservation of haylage, the introduction of Silo Twice biopreservative provides a decrease in protein losses of 2.0–2.2 times. Feeding milk cows with haylage obtained when applying Silo Twice biopreservative provides an increase in the milk yield by 8.0%, milk fat content by 0.4%. The use in the diet of dairy cows of haylage obtained with the introduction of the biopreservative Silo Twice contributed to a reduction in the cost of exchange energy and concentrates by 2.43% and 2.95%, respectively. The use in the diet of dairy cows of haylage obtained with the introduction of biopreservative Silo Twice led to the optimization of processes in the scar, an increase in the level of volatile fatty acids and bacteria, with a decrease in the amount of ammonia by 16.3%. This fact indicates an improvement in the digestibility and absorption of nitrogen in the scar of cows. Feeding milk cows for 60 days with haylage obtained when the Silo Twice biopreservative was introduced provided a savings of 2250 rubles per cow.

In this paper, an approach to the analysis of hydraulic characteristics for the cooling and thermal stabilization systems of subdetectors in the MPD setup is described, including mathematical modeling and bench tests. Distributed and discrete models are used to simulate the cooling fluid flow. For bench tests, an automated test bench representing a software–hardware complex with vacuum and circulation pumps and liquid pressure, liquid flow rate, and temperature sensors has been developed. The test bench design may be transformed in compliance with formulated test problems. It has been experimentally established that, at a nominal cooling fluid flow rate of 0.006 kg/s, the pressure drop on one cooling pipeline of ADC64ECal modules is ≈0.12 atm. Numerical calculation and experimental measurement results for the pressure drop agree with each other with a deviation less than 2%. The transition to the leakless mode (absolute pressure, 0.4–0.0 atm) does not change the pressure–flow rate characteristic of the ECal panel when compared to the regime of flow at a superatmospheric pressure. The proposed approach is applicable to a broad spectrum of problems on the characterization and commissioning of the thermal stabilization and cooling system of the ТРС detector and other MPD setup detectors.

This paper is an erratum to a previous paper (EPJC 73 (2013) 2531) published by C. Adolph et al. (The COMPASS Collaboration) using a data sample taken in 2004. In the course of the ongoing analysis of the more recent 2006 data sample, and following some additional hints we identified a problem in the analysis of the 2004 data presented in EPJC 73 (2013) 2531. The acceptance correction for the 2004 data sample did not properly account for the use of semi-inclusive triggers on top of the inclusive triggers.

(ProQuest: ... denotes formulae and/or non-USASCII text omitted; see image) Large samples of [Lambda], Σ(1385) and Ξ(1321) hyperons produced in the deep-inelastic muon scattering off a ^sup 6^LiD target were collected with the COMPASS experimental setup at CERN. The relative yields of Σ(1385)^sup +^, Σ(1385)^sup -^, ..., ..., Ξ(1321)^sup -^, and ... hyperons decaying into ... were measured. The ratios of heavy-hyperon to [Lambda] and heavy-antihyperon to ... were found to be in the range 3.8 % to 5.6 % with a relative uncertainty of about 10 %. They were used to tune the parameters relevant for strange particle production of the LEPTO Monte Carlo generator.

In the fragmentation of a transversely polarized quark several left-right asymmetries are possible for the hadrons in the jet. When only one unpolarized hadron is selected, it exhibits an azimuthal modulation known as Collins effect. When a pair of oppositely charged hadrons is observed, three asymmetries can be considered, a di-hadron asymmetry and two single hadron asymmetries. In lepton deep inelastic scattering on transversely polarized nucleons all these asymmetries are coupled with the transversity distribution. From the high statistics COMPASS data on oppositely charged hadron-pair production we have investigated for the first time the dependence of these three asymmetries on the difference of the azimuthal angles of the two hadrons. The similarity of transversity induced single and di-hadron asymmetries is discussed. A new analysis of the data allows to establish quantitative relationships among them, providing for the first time strong experimental indication that the underlying fragmentation mechanisms are all driven by a common physical process.

The COMPASS collaboration at CERN has investigated pion Compton scattering, \\(\\pi^-\\gamma\\rightarrow \\pi^-\\gamma\\), at centre-of-mass energy below 3.5 pion masses. The process is embedded in the reaction \\(\\pi^-\\mathrm{Ni}\\rightarrow\\pi^-\\gamma\\;\\mathrm{Ni}\\), which is initiated by 190\\,GeV pions impinging on a nickel target. The exchange of quasi-real photons is selected by isolating the sharp Coulomb peak observed at smallest momentum transfers, \\(Q^2<0.0015\\)\\,(GeV/\\(c\\))\\(^2\\). From a sample of 63\\,000 events the pion electric polarisability is determined to be \\(\\alpha_\\pi\\ =\\ (\\,2.0\\ \\pm\\ 0.6_{\\mbox{\\scriptsize stat}}\\ \\pm\\ 0.7_{\\mbox{\\scriptsize syst}}\\,) \\times 10^{-4}\\,\\mbox{fm}^3\\) under the assumption \\(\\alpha_\\pi=-\\beta_\\pi\\), which relates the electric and magnetic dipole polarisabilities. It is the most precise measurement of this fundamental low-energy parameter of strong interaction, that has been addressed since long by various methods with conflicting outcomes. While this result is in tension with previous dedicated measurements, it is found in agreement with the expectation from chiral perturbation theory. An additional measurement replacing pions by muons, for which the cross-section behavior is unambigiously known, was performed for an independent estimate of the systematic uncertainty.

The main characteristics of the COMPASS experimental setup for physics with hadron beams are described. This setup was designed to perform exclusive measurements of processes with several charged and/or neutral particles in the final state. Making use of a large part of the apparatus that was previously built for spin structure studies with a muon beam, it also features a new target system as well as new or upgraded detectors. The hadron setup is able to operate at the high incident hadron flux available at CERN. It is characterised by large angular and momentum coverages, large and nearly flat acceptances, and good two and three-particle mass resolutions. In 2008 and 2009 it was successfully used with positive and negative hadron beams and with liquid hydrogen and solid nuclear targets. This article describes the new and upgraded detectors and auxiliary equipment, outlines the reconstruction procedures used, and summarises the general performance of the setup.