Production of He-4 and (4) in Pb-Pb collisions at root(NN)-N-S=2.76 TeV at the LHC

Results on the production of He-4 and (4) nuclei in Pb-Pb collisions at root(NN)-N-S = 2.76 TeV in the rapidity range vertical bar y vertical bar <1, using the ALICE detector, are presented in this paper. The rapidity densities corresponding to 0-10% central events are found to be dN/dy4(He) = (0.8 +/- 0.4 (stat) +/- 0.3 (syst)) x 10(-6) and dN/dy4 = (1.1 +/- 0.4 (stat) +/- 0.2 (syst)) x 10(-6), respectively. This is in agreement with the statistical thermal model expectation assuming the same chemical freeze-out temperature (T-chem = 156 MeV) as for light hadrons. The measured ratio of (4)/He-4 is 1.4 +/- 0.8 (stat) +/- 0.5 (syst). (C) 2018 Published by Elsevier B.V.Peer reviewe

THE GEOMETERS (LEPIDOPTERA, GEOMETRIDAE) OF THE NORTH CAUCASUS

The purpose of the work: the biogeographic and ecological analysis of the fauna of geometers of the North Caucasus. Revealed have been 364 species, 71 of them are new for the fauna and 6 for the science. 22 species have been eliminated from the List. The composition of the fauna, the trophic connections and the laws of spreading have been analyzed. The geographic connections with other regions of the Palearctic have been cleared up. The various age of the endemism and the causes of arising of some taxons have been proved. Received have been the data about the vermins of the agricultural and forest economies. The material required for creating the regional determinator of geometers has been preparedAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio

Chromosomal and molecular evidence for presence of Polyommatus (Agrodiaetus) poseidon (Lepidoptera, Lycaenidae) in Caucasus region

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Effect of compound feed acidification on the body weight gain of quails on mini-farms

The article presents the study results on the fattening effectiveness of Texas Broiler quails using the formulated feed with “B.I.O. Acid Ultra” acidifier. Space and layout design of the mini-farm allowed to house 1000 head of the main flock and up to 300 young birds. The inside climate system of the mini-farm maintained the temperature in the range of 18 °C -20 °C and 75% humidity. In the study, 250 head of daily chicks were randomly selected and divided into 5 groups of 50 head each – one control group and four experimental ones. The study lasted for 8 weeks, i.e. the meat quail fattening period. The addition of the acidifier to the diet in the amount of 0.23% was found to result in 9.0% increase in the bodyweight of the 8-week old quails. The average daily weight increments also increased during the entire fattening period. The use of the acidifier reduced the feed conversion ratio by 4.1% – 6.79 versus 7.1 in the control group. However, the effect of different acidifiers on the effectiveness of quail fattening and the organoleptic and other quality indicators of the quail meat requires further comparative inquiry

Modelling a cage mooring system with pull-back chains for industrial aquaculture

This paper discusses the technical aspects of modeling the cage retention system for industrial fish farming in a pond using pull chains. The purpose of this work: substantiation of the parameters of the holding ropes, the length of the chains and the required mass of the anchors by calculating the tensile forces in the ropes and the reaction of the anchor supports when solving the dynamic problem in an unsteady setting. Dynamic system was developed that takes into account wind, wave and inertial loads acting on all elements of the system: cage, holding ropes, chains, anchors. The force acting on the surface of the cage from the wind is received. For this, a solid-state cage model was developed with equivalent windage. The tensile forces in the ropes and the reaction of the anchor supports in three planes are obtained. The lengths of the chains are selected, ensuring the absence of tearing forces acting on the anchors. Moreover, the calculations were performed in a non-stationary setting with a gradual increase in load. The simulation duration was 60 s. During this time, one resonance phenomenon was revealed: a significant increase in the breaking strength in the rope at 37 seconds of calculation

Study of the growth and survival parameters of Macrobrachium rosenbergii shrimp depending on the type of feed used

The aim of the study is to determine the effect of the feed type (Daphnia pulex-based feed and Dajana nano gran brand) on the water quality (presence of microorganisms and suspended solids) and on the growth and survival of Macrobrachium rosenbergii shrimp larvae. The study implementation plan involved 4 groups of shrimps placed under the same conditions, which were evaluated for 14 weeks through periodic observations and biometrics. The data obtained recorded significant differences between the groups where the best growth and survival results were obtained in organisms that received Dajana nano gran feed, regardless of water quality. In addition, the values of protein in shrimp meat up to 45% and different amounts of fatty acids were obtained. It was determined that the Daphnia pulex-based feed showed lower results in the growth rate and survival rate of Macrobrachium rosenbergii shrimp

Improving the Efficacy of Antimicrobials against Biofilm-Embedded Bacteria Using Bovine Hyaluronidase Azoximer (Longidaza^®)

While in a biofilm, bacteria are extremely resistant to both antimicrobials and the immune system, leading to the development of chronic infection. Here, we show that bovine hyaluronidase fused with a copolymer of 1,4-ethylenepiperazine N-oxide and (N-carboxymethyl) -1,4-ethylenepiperazinium bromide (Longidaza®) destroys both mono- and dual-species biofilms formed by various bacteria. After 4 h of treatment with 750 units of the enzyme, the residual biofilms of Staphylococcus aureus, Enterococcus faecalis, Escherichia coli, Pseudomonas aeruginosa and Klebsiella pneumoniae preserved about 50–70% of their initial mass. Biomasses of dual-species biofilms formed by S. aureus and the four latter species were reduced 1.5-fold after 24 h treatment, while the significant destruction of S. aureus–P. aeruginosa and S. aureus–K. pneumoniae was also observed after 4 h of treatment with Longidaza®. Furthermore, when applied in combination, Longidaza® increased the efficacy of various antimicrobials against biofilm-embedded bacteria, although with various increase-factor values depending on both the bacterial species and antimicrobials chosen. Taken together, our data indicate that Longidaza® destroys the biofilm structure, facilitating the penetration of antimicrobials through the biofilm, and in this way improving their efficacy, lowering the required dose and thus also potentially reducing the associated side effects

Overlooked cryptic diversity in muschampia (lepidoptera: Hesperiidae) adds two species to the european butterfly fauna

Cryptic species represent a challenge for documenting global biodiversity. Even in well-studied groups, such as European butterflies, the application of integrative approaches has allowed the recognition of an unexpected number of cryptic taxa. Here, we combine the analysis of mitochondrial (cytochrome c oxidase I, COI) and nuclear (internal transcribed spacer 2, ITS2) markers with geometric morphometrics of the male genitalia to study diversity within the butterfly Muschampia proto. The nuclear marker reveals three well-supported and deeply diverged lineages, which are also detected based on mitochondrial DNA, although the latter recovers one of them as paraphyletic with poor support. These lineages also present distinct male genital characters, which allow blind assignment of > 97% of specimens when applying a jackknife procedure. We conclude that M. proto comprises three cryptic species that started to differentiate ~2 Mya: M. proto, distributed in northern Africa, the Iberian Peninsula and southern France; Muschampia alta comb. & stat. nov., occurring in southern Italy and the Balkan Peninsula; and Muschampia proteides, present in the easternmost part of Europe, the Near East and Iran. This discovery adds two new species to the European butterfly fauna and highlights the necessity to continue investigating potential cryptic diversity.We are grateful to all the colleagues who provided samples used in this study. Financial support for this research was provided by projects PID2019-107078GB-I00 / Agencia Estatal de Investigación / 10.13039/501100011033 and 2017-SGR-991 (Generalitat de Catalunya) to R.V., by a predoctoral fellowship BES-2017-080641 (Ministerio de Economía y Empresa de España) to J.C.H., by the Academy of Finland (decision no. 328895) to V.D. and by project RSF 19-14-00202 (from the Russian Science Foundation to the Zoological Institute of the Russian Academy of Sciences) to V.A.L., and by the project Servizio di attuazione delle azioni per la protezione degli impollinatori e diffusione dell’entomofauna del Parco Nazionale dell’Alta Murgia to L.D

Overlooked cryptic diversity in muschampia (lepidoptera: Hesperiidae) adds two species to the european butterfly fauna

Cryptic species represent a challenge for documenting global biodiversity. Even in well-studied groups, such as European butterflies, the application of integrative approaches has allowed the recognition of an unexpected number of cryptic taxa. Here, we combine the analysis of mitochondrial (cytochrome c oxidase I, COI) and nuclear (internal transcribed spacer 2, ITS2) markers with geometric morphometrics of the male genitalia to study diversity within the butterfly Muschampia proto. The nuclear marker reveals three well-supported and deeply diverged lineages, which are also detected based on mitochondrial DNA, although the latter recovers one of them as paraphyletic with poor support. These lineages also present distinct male genital characters, which allow blind assignment of > 97% of specimens when applying a jackknife procedure. We conclude that M. proto comprises three cryptic species that started to differentiate ~2 Mya: M. proto, distributed in northern Africa, the Iberian Peninsula and southern France; Muschampia alta comb. & stat. nov., occurring in southern Italy and the Balkan Peninsula; and Muschampia proteides, present in the easternmost part of Europe, the Near East and Iran. This discovery adds two new species to the European butterfly fauna and highlights the necessity to continue investigating potential cryptic diversity.We are grateful to all the colleagues who provided samples used in this study. Financial support for this research was provided by projects PID2019-107078GB-I00 / Agencia Estatal de Investigación / 10.13039/501100011033 and 2017-SGR-991 (Generalitat de Catalunya) to R.V., by a predoctoral fellowship BES-2017-080641 (Ministerio de Economía y Empresa de España) to J.C.H., by the Academy of Finland (decision no. 328895) to V.D. and by project RSF 19-14-00202 (from the Russian Science Foundation to the Zoological Institute of the Russian Academy of Sciences) to V.A.L., and by the project Servizio di attuazione delle azioni per la protezione degli impollinatori e diffusione dell’entomofauna del Parco Nazionale dell’Alta Murgia to L.D