Modeling of atmospheric effect on muon component of secondary cosmic rays

Modelovanje uticaja meteoroloških efekata na fluks kosmičkih miona osim fundamentalnog ima i praktičan značaj...Varying conditions in the atmosphere affect the propagation of cosmic ray muons. Adequate description of variations induced by meteorological effects is necessary for understanding the variations of non-atmospheric origin. Two novel methods for analysis of meteorological effects are introduced. Both are fully empirical and require knowledge about atmospheric pressure and temperature profile of the atmosphere. First method is based on principal component analysis, while second is based on multivariate regression algorithms. Muon count time series thusly corrected for meteorological effects have significantly smaller variance and reduced amplitude of annual variation. Methods are universally applicable and allow for easy extension of the set of input variables

The Laboratory Investigations of High-Density Polyethylene Drains for Application in Tailings

For the purposes of draining material deposited in the tailings pond under construction, there was a need to examine the properties of the high-density polyethylene drain tubes and the consisting materials in order to assess their adequacy in the specific conditions. The conducted laboratory investigations of the samples cut from the tubes included: determination of bulk density, tensile strength in the tangential direction, as well as the compressive strength in a radial direction. Representative samples of the tubes themselves were tested in two different loading dispositions, in order to record the load-deflection effects. The test results indicated the specific behavior of the tested material in service conditions

Jedan slučaj ispitivanja otpornosti pregradnih zidova na dejstvo bočnih udara

This paper deals with one example of actual investigation of partition walls    subjected to lateral stroke. The investigation of a subject is referred to    by the mason walls technical norms regulation book, but the Regulation book    doesn't provide an actual method for this particular investigation. In the    lack of such method, internal method of IMK is actually applied. This    method is presented here both in sense of materialization of a procedure,    and as it's illustration on a specific building and partition walls inside    it. .U radu se daje primer jednog konkretnog ispitivanja pregradnih zidova na      dejstvo bočnih udara. Predmetno ispitivanje je propisano Pravilnikom o      tehničkim normativima za zidane zidove, ali tim Pravilnikom nije predviđena     konkretna metoda ispitivanja. U nedostatku te metode u praksi se primenjuje    interna metoda IMK koja je u predmetnom radu prikazana kako u smislu      materijalizacije postupka, tako i njene ilustracije na jednom konkretnom      objektu i pregradnim zidovima unutar njega.

Highly Contiguous Assemblies of 101 Drosophilid Genomes

Over 100 years of studies in Drosophila melanogaster and related species in the genus Drosophila have facilitated key discoveries in genetics, genomics, and evolution. While high-quality genome assemblies exist for several species in this group, they only encompass a small fraction of the genus. Recent advances in long-read sequencing allow high-quality genome assemblies for tens or even hundreds of species to be efficiently generated. Here, we utilize Oxford Nanopore sequencing to build an open community resource of genome assemblies for 101 lines of 93 drosophilid species encompassing 14 species groups and 35 sub-groups. The genomes are highly contiguous and complete, with an average contig N50 of 10.5 Mb and greater than 97% BUSCO completeness in 97/101 assemblies. We show that Nanopore-based assemblies are highly accurate in coding regions, particularly with respect to coding insertions and deletions. These assemblies, along with a detailed laboratory protocol and assembly pipelines, are released as a public resource and will serve as a starting point for addressing broad questions of genetics, ecology, and evolution at the scale of hundreds of species

Highly contiguous assemblies of 101 drosophilid genomes

Over 100 years of studies in Drosophila melanogaster and related species in the genus Drosophila have facilitated key discoveries in genetics, genomics, and evolution. While high-quality genome assemblies exist for several species in this group, they only encompass a small fraction of the genus. Recent advances in long-read sequencing allow high-quality genome assemblies for tens or even hundreds of species to be efficiently generated. Here, we utilize Oxford Nanopore sequencing to build an open community resource of genome assemblies for 101 lines of 93 drosophilid species encompassing 14 species groups and 35 sub-groups. The genomes are highly contiguous and complete, with an average contig N50 of 10.5 Mb and greater than 97% BUSCO completeness in 97/101 assemblies. We show that Nanopore-based assemblies are highly accurate in coding regions, particularly with respect to coding insertions and deletions. These assemblies, along with a detailed laboratory protocol and assembly pipelines, are released as a public resource and will serve as a starting point for addressing broad questions of genetics, ecology, and evolution at the scale of hundreds of species

Ispitivanje svojstava i primeri primene karbonskih traka za ojačanje betonskih konstrukcija

The results of authors' own laboratory testing of two CFRP strip types - Sika CarboDur Plates and SikaWrap fabrics, as well as the corresponding Sikadur epoxy adhesive used for bonding and/or impregnation of CFRP strips, are presented in this paper. Also, the adhesion of these CFRP strips to concrete was tested. The obtained experimental results show that the tested system can be successfully applied for strengthening/repair of concrete structures. In addition, certain examples of application in practice are presented. .U radu su prikazani rezultati sopstvenih laboratorijskih ispitivanja svojstava dva tipa karbonskih traka (CFRP) - laminata pod nazivom Sika CarboDur Plates i pletenih tkanina pod nazivom SikaWrap, kao i odgovarajućih epoksidnih lepkova tipa Sikadur koji se koriste za lepljenje i/ili impregnaciju CFRP traka. Takođe, ispitivana je i athezija (prianjanje) predmetnih karbonskih traka za beton. Rezultati eksperimentalnih ispitivanja pokazuju da se radi o sistemu koji se može primeniti kao kvalitetno rešenje za ojačanje/sanaciju betonskih konstrukcija. Na kraju su dati i izvesni primeri primene u praksi.

Eкспериментална испитивања самоуграђујућег бетона са рециклираном гумом и рециклираним бетоном у својству агрегата

The replacement of natural aggregates (NA) with alternative aggregates in concrete can contribute to the sustainable development of the construction industry. This paper aims to present research investigating the effects of recycled concrete aggregate (RCA) and crumb rubber (CR) utilization on the performance of Self-Compacting Concrete (SCC) mixtures in both fresh and hardened states. For this purpose, SCC mixtures with three different replacement levels of CR - 0%, 20% and 30% by volume for fine aggregate and 100% coarse RCA were prepared along with the reference mixture containing NA only. To assess the effects of NA replacement, the physical and mechanical tests were conducted on prepared SCC mixtures and corresponding results were analysed and compared

Multiyear indoor radon variability in a family house - a case study in serbia

The indoor radon behavior has complex dynamics due to the influence of the large number of different parameters: the state of indoor atmosphere (temperature, pressure, and relative humidity), aerosol concentration, the exchange rate between indoor and outdoor air, construction materials, and living habits. As a result, indoor radon concentration shows variation, with the usual periodicity of one day and one year. It is well-known that seasonal variation of the radon concentration exists. It is particularly interesting to investigate indoor radon variation at the same measuring location and time period, each year, due to estimation of individual annual dose from radon exposure. The long-term indoor radon measurements, in a typical family house in Serbia, were performed. Measurements were taken during 2014, 2015, and 2016, in February and July, each year. The following measuring techniques were used: active and charcoal canisters methods. Analysis of the obtained results, using multivariate analysis methods, is presented. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. 171002: Nuclear Methods Investigations of Rare Processes and Cosmic Rays and Grant no. 43002: Biosensing Technologies and Global System for Continuous Research and Integrated Management

Highly contiguous assemblies of 101 drosophilid genomes.

Over 100 years of studies in Drosophila melanogaster and related species in the genus Drosophila have facilitated key discoveries in genetics, genomics, and evolution. While high-quality genome assemblies exist for several species in this group, they only encompass a small fraction of the genus. Recent advances in long-read sequencing allow high-quality genome assemblies for tens or even hundreds of species to be efficiently generated. Here, we utilize Oxford Nanopore sequencing to build an open community resource of genome assemblies for 101 lines of 93 drosophilid species encompassing 14 species groups and 35 sub-groups. The genomes are highly contiguous and complete, with an average contig N50 of 10.5 Mb and greater than 97% BUSCO completeness in 97/101 assemblies. We show that Nanopore-based assemblies are highly accurate in coding regions, particularly with respect to coding insertions and deletions. These assemblies, along with a detailed laboratory protocol and assembly pipelines, are released as a public resource and will serve as a starting point for addressing broad questions of genetics, ecology, and evolution at the scale of hundreds of species