Search results for "STD"
showing 7 items of 47 documents
Harmonic sources detection in power systems via nonactive power measurements according to IEEE Std. 1459-2010: theoretical approach and experimental …
2010
In this paper an enhanced decision-making strategy is presented for the detection of harmonic sources in power systems able to detect also which is the prevailing nature of the disturbance (nonlinearity or unbalance). It makes use of some simple indices, which are evaluated by means of the measurements of some nonactive power quantities, proposed by the authors and derived from the approach of the IEEE Std. 1459-2010. The decision-making rules for the proposed strategy are presented and discussed by means of simulation and experimental tests. The results obtained are presented, showing the effectiveness of the proposed strategy for the detection of the dominant harmonic source upstream or d…
Dissemination/Communication Report. Period concerning this report: 01.01.2019-31.12.2019.
2019
During the second year of the project implementation different dissemination/communication activities were carried out. The scientific results of the project were presented on two conferences ICSAAM 2019, September 12-15, 2019 (Ischia, Italy) and DFMN 2019, November 19-22, 2019 (Moscow, Russia). Based on the conference presentation two conference full papers were prepared and submitted for the publication in conference proceedings having open access and indexed in Scopus. One scientific publication was published in the special issue of Polymers (Q1 open access journal, IF 3.2). For the dissemination of information among general public professional FACEBOOK profile was regularly updated with…
12M Progress Report. Period concerning this report: 01.01.2018-31.12.2018.
2018
During the first year of the project the main purpose was to choose, purchase and develop investigated materials: epoxy resin and at least two carbon nanofillers (nanotubes, nanofibres and/or graphene). The most promising material solution and the most optimal processing route were chosen and reported. Then two sets of epoxy and NC specimens were developed during Mobilities#2-3 to partner organization, Institute for Polymers, Composites and Biomaterials (Portici, Italy). The test specimens of epoxy and NC were subjected to environmental ageing: water absorption at 70 °C until equilibrium water content and heating at 70 °C, then freezing at ap. -20 °C to evaluate the most environmentally sta…
Polyphenols and Pharmacological Screening of a Monarda fistulosa L. dry Extract Based on a Hydrodistilled Residue By-Product
2021
This study aimed to determine the composition and content of polyphenols in the dry extract obtained from the hydrodistilled residue by-product of the wild bergamot (Monarda fistulosa L., Lamiaceae Martinov family) herb (MFDE) and to evaluate its safety and pharmacological properties. The total phenolic content (TPC) in the MFDE was 120.64 mg GAE/g. The high-performance liquid chromatography (HPLC) analysis showed the presence of a plethora of phenolic compounds, including hydroxycinnamic acids and flavone derivatives in the MFDE, with rosmarinic acid and luteolin-7-O-glucoside being the main components. With an IC50 value of 0.285 mg/mL, it was found to be a strong DPPH radical scavenger. …
The Industrial Applicability of PEA Space Charge Measurements, for Performance Optimization of HVDC Power Cables
2019
Cable manufacturing industries are constantly trying to improve the electrical performance of power cables. During the years, it was found that one of the most relevant degradation factors influencing the cable lifetime is the presence of space charge in the insulation layer. To detect the accumulated charge, the pulsed electro-acoustic (PEA) method is the most used technique. Despite the wide use of the PEA cell, several issues are still present. In particular, the PEA output signal is strongly disturbed by the acoustic waves reflections within the PEA cell. This causes the distortion of the output signal and therefore the misinterpretation of the charge profiles. This, in turn, may result…
Latviešu autoru 21.gadsimta teātra tekstu funkcionalitāte
2019
Maģistra darbs “Latviešu autoru 21. gadsimta teātra tekstu funkcionalitāte” veltīts latviešu autoru 21. gadsimta teātra tekstu analīzei, pievēršot uzmanību tekstradei un teksta funkcionalitātei. Mainoties teātra tekstu un iestudējumu savstarpējām attiecībām un tekstam zaudējot centrālo lomu iestudējumos, mainījušies arī teātra tekstu radīšanas principi un teksta funkcionalitāte iestudējumā, un tas sevišķi spilgti novērojams postdramatiskā teātra kontekstā. Latvijas teātrī par būtiski pagriezienu kļuva Alvja Hermaņa 2004. gada izrāde “Latviešu stāsti” (Jaunais Rīgas teātris), kas aktualizēja diskursu par teātra tekstiem. Šajā darbā no tekstrades un teksta funkcionalitātes viedokļa analizētas…