Bacterial biofilm on PLA film and methods of its identification

This paper presents a brief characterization of bacterial biofilm, formed on polylactide, ecologically important biodegradable material. The concept of bacterial biofilm was explained, including the process of its formation as well as the structure and model of functioning in a biological environment. Three methods of its determination and documentation by spectrophotometric measurement, live/dead test using fluorescence microscope and surface structure analysis using scanning electron microscope were presented

New biodegradable polylactide material with antimicrobial properties

This study aimed to investigate the bactericidal, fungicidal and non-phytotoxic properties of vapor permeable polylactide films containing five different concentrations (in the range of 0.2–1.0%) of thiabendazole. All films showed bactericidal properties on Staphylococcus aureus and Escherichia coli. Thiabendazole introduced into polylactide affected the antifungal activity of the materials containing 0.8 and 1.0% thiabendazole. The films containing thiabendazole were characterized by increased permeability. The vapor permeability of the film increased with the increase of the biocide content in the composites. The new materials had no a negative effect on the growth and development of monocotyledonous and dicotyledonous plants. It has been shown that the presence of thiabendazole increases the water vapor permeability of polylactide films. The obtained materials are biodegradable and can be used in horticulture and agriculture to protect plants against pathogens. The use of films with biocide properties will reduce the use of plant protection products. This is particularly important due to the need to protect biodiversity in the ecosystem of agricultural soils

THE STRINGENT RESPONSE AND ITS INVOLVEMENT IN THE REACTIONS OF BACTERIAL CELLS TO STRESS

Savijanje je danas jedan od najraširenijih postupaka obrade deformiranjem, a primjena savijanja je vrlo široka, od automobilske industrije, prehrambene, zrakoplovne industrije pa sve do brodogradnje. Ovim postupkom možemo savijati različite materijale kao što su čelik, bakar, aluminij. Najraširenija je primjena za savijanje čeličnih limova i traka te cijevi i profila. Uređaji za savijanje cijevi i profila mogu se koristiti za masovnu proizvodnju dijelova kao što su automobilske ispušne cijevi, prirubnice cijevi, profili za vođenje. Fokus u ovom radu je stavljen na savijanje dijelova velikih dimenzija. Analizom postojećih rješenja odabrane su standardne komponente stroja za savijanje, a 3D model napravljen je u programskom paketu SolidWorks. U uvodnom dijelu rada napravljena je analiza tržišta, funkcijska dekompozicija te izrada koncepta. Naglasak je stavljen na smanjenje mase uređaja te jednostavnost održavanja. Nakon toga, prikazana je konstrukcijska razrada, odabir i proračun ključnih dijelova uređaja te zaključak.Bending is today one of the most used deformation processes in the world and its application itself is very wide. From the automotive industry, food, aerospace to shipbuilding. By this method, we can bend different materials such as steel, copper, aluminium. It is the most widely applied for the bending of the steel sheets and strips or pipes and profiles. Section bending machines can be used for mass production of bent tubes, such as automotive exhaust pipes, pipe flanges, guide profiles. The primary focus of the work is on bending parts of large dimensions. After conceptualisation, the analysis and selection of the of the standard components were performed, and the 3D model was created in the SolidWorks CAD package. In the first part of the thesis, an analysis of the market is described, and functional decomposition was developed. Emphasis on conceiving was placed on the weight reduction of the machine and its easy maintenance. The second part of the thesis includes the selection and the dimensioning of the critical components of the description of the embodiment principles followed by detail design and conclusion

Discriminative characteristics of marginalised novel psychoactive users: A transnational study

New psychoactive substances (NPS) continue to be considered as a major public health concern in many European countries. The study was implemented within the framework of a transnational project of six European countries (Germany, Hungary, Ireland, Netherlands, Poland, Portugal). Our aim here is to report on the distinct and differentiating characteristics of marginalised NPS users. Three subgroups of a total of 3023 adult NPS users (socially marginalised, night life, online community) were examined regarding their socio-demographic characteristics, substance use, and external motives towards NPS use. Poland and Hungary reported higher rates of NPS use in comparison to traditional controlled drugs. The external/contextual motives did not play a central role in the background of NPS use, the least important motives were alleged legality and non-detectability of these substances. Marginalised (defined as those accessing low threshold harm reduction services) users’ substance use patterns are different from the other two groups in terms of showing more intense and riskier drug use. The most important variables which contributed to be categorised as a marginalised NPS user were lower level education, being older, having an unfavourable labour market position and using drugs intravenously. Contextual motives did not play a decisive role in being categorised as a marginalised user when drug use pattern was controlled. These identified discriminative features of marginalised drug users should inform policy makers to develop and implement tailor-made interventions targeting this user group to successfully tackle the elevated public health concerns associated with NPS use

Why do people use new psychoactive substances? Development of a new measurement tool in six European countries.

This study was supported by the European Union (New Psychoactive Substances: transnational project on different user groups, user characteristics, extent and patterns of use, market dynamics, and best practices in prevention [HOME/2014/JDRU/AG/DRUG/7077]), the Hungarian National Research, Development and Innovation Office (Grant number: KKP126835; NKFIH1157-8/2019-DT). The study was also supported for the realization of this international cofinanced science project in 2016-2017 by the Polish Ministry of Science and Higher Education. Máté Kapitány-Fövény acknowledges the support by the János Bolyai Research Scholarship of the Hungarian Academy of Sciences and the support by the ÚNKP-19 New National Excellence Program of the Hungarian Ministry for Innovation and Technology. The funding institutions had no role in the study design or the collection, analysis and interpretation of the data, writing the manuscript, or the decision to submit the paper for publication

The T2K Side Muon Range Detector

The T2K experiment is a long baseline neutrino oscillation experiment aiming to observe the appearance of {\nu} e in a {\nu}{\mu} beam. The {\nu}{\mu} beam is produced at the Japan Proton Accelerator Research Complex (J-PARC), observed with the 295 km distant Super- Kamiokande Detector and monitored by a suite of near detectors at 280m from the proton target. The near detectors include a magnetized off-axis detector (ND280) which measures the un-oscillated neutrino flux and neutrino cross sections. The present paper describes the outermost component of ND280 which is a side muon range detector (SMRD) composed of scintillation counters with embedded wavelength shifting fibers and Multi-Pixel Photon Counter read-out. The components, performance and response of the SMRD are presented.Comment: 13 pages, 19 figures v2: fixed several typos; fixed reference