Solar energy application in houses heating systems in Russia

The solar energy is widely used around the world for electricity generation and heating systems in municipal services. But its use is complicated in the number of territories with uneven receipts of solar radiation on the earth’s surface and large number of cloudy days during a year. A hypothesis on the possibility of application of individual solar collectors for heating of houses in the number of cities of Russia has been tested. The existing designs of solar collectors and checking the possibility of their application in northern territories of Russia are investigated. The analysis was carried out taking into account features of relief and other climatic conditions of the Perm and Sverdlovsk regions. As the result of research, the basic recommended conditions for application of solar batteries in houses of the northern Russian cities have been resumed

HOLISDER Project: Introducing Residential and Tertiary Energy Consumers as Active Players in Energy Markets

Although it has been demonstrated that demand-side flexibility is possible, business application of residential and small tertiary demand response programs has been slow to develop. This paper presents a holistic demand response optimization framework that enables significant energy costs reduction for consumers. Moreover, buildings are introduced as main contributors to balance energy networks. The solution basis consists of a modular interoperability and data management framework that enables open standards-based communication along the demand response value chain. The solution is being validated in four large-scale pilot sites, which have diverse building types, energy systems and energy carriers. Furthermore, they offer diverse climatic conditions, and demographic and cultural characteristics to establish representative results.Research leading to these results has been supported by HOLISDER project. This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No. 768614. The APC was funded by HOLISDER project

Rezultati ispitivanja uskoredih sejalica pri setvi raži u agroekološkim uslovima severnog Kosova i Metohije

Rye is a farming culture that is important as bread wheat. It is excellent fodder either the green or in the bran, flour or grain. The rye grain is used for the production of alcohol, vinegar and starch, cellulose, lignin, furfurol, good quality paper and seeds in the pharmaceutical industry. The process of production of rye grain on the principle of ''grain-grain'', can also occur through the sowing of winter rye. Sowing units take up important role in the technological process of sowing of winter rye as the dominant in agro-ecological conditions in northern Kosovo and Metohija. The very process of sowing is followed by a series of specific features that interact with the effects of applied work of narrow line seeder significantly affect the amount of actual yield of winter rye and profitability of its production. It is practically impossible to remove omission in the process of winter rye sowing. The aim of this research was to determine the quality and reliability of different narrow line seeder of rye based on field-laboratory research and exploitation in the agro-ecological conditions of northern Kosovo and Metohija, depending on defined parameters. These results indicate the advantages and disadvantages of the applied sowing aggregates concepts.Raž predstavlja ratarsku kulturu koja je značajna kao hlebno žito, odlična je stočna hrana, bilo za zeleno, bilo u mekinjama, brašnu ili zrnu. U industriji se zrno koristi i za proizvodnju alkohola, skroba i sirćeta, celuloze, lignina, furfurola i hartije dobrog kvaliteta a klica u farmaceutskoj industriji. Proces proizvodnje raži po principu ''zrno-zrno'', može se odvijati kroz setvu ozime i jare raži. Značajno mesto u tehnološkom postupku setve ozime raži kao dominantne u agroekološkim uslovima severnog Kosova i Metohije, zauzimaju setveni agregati. Sam proces setve praćen je nizom specifičnosti, koje u interakciji sa efektima rada primenjenih uskoredih sejalica značajno utiču na visinu ostvarenih prinosa ozime raži i rentabilnost proizvodnje ove ratarske kulture. Učinjene propuste u procesu setve ozime raži kasnije praktično nije moguće otkloniti. Cilj istraživanja je bio da se na osnovu poljsko-laboratorijskih i eksploatacionih istraživanja utvrdi kvalitet rada i pouzdanost u radu različitih uskoredih sejalica pri setvi raži u agroekološki uslovima severnog Kosova i Metohije, u zavisnosti od definisanih parametara. Dobijeni rezultati ukazuju na prednosti, odnosno na nedostatke primenjene koncepcije setvenog agregata

Rapd fingerprinting of indigenous lysinibacillus fusiformis isolates from stabilized sludge and oil-polluted soil

The Lysinibacillus group are motile Gram-positive bacilli, with oval or spherical spores, oxidase and catalase positive, not grouped in strict chains, with strictly oxidative metabolism and very similar to Bacillus sphericus group. Two indigenous isolates of Lysinibacillus fusiformis from oil-polluted soil near gas station and stabilized sludge from petrochemical plant in Serbia (FOV – HIP “Petrohemija”, Pancevo) were tested on IAR and HMT and showed high sensitivity to neomycin, cephalexin and bacitracin, and were resistant to trimethoprim. Both isolates were tolerant to 100μg/ml of Zn and Co, 10μg/ml of Mo, but they differed in tolerance to 20μg/ml of Cd and 10μg/ml of Hg. The isolate from stabilized sludge showed moderate emulsification ability of xylol (E24 65.8) and mineral oil (E24 75.6). The isolate from oil-polluted soil showed very strong emulsification ability of xylol (E24 87.2) and moderate of mineral oil (E24 72.7). RAPD fingerprinting showed clear differences between the two Lysinibacillus fusiformis isolates

Antibacterial and cytotoxic activities of naphthoquinone pigments from Onosma visianii Clem

In this study, the antibacterial and cytotoxic activities of isolated compounds from the roots of Onosma visianii were investigated. By using different chromatographic techniques and appropriate spectroscopic methods, the seven naphthoquinones were described: deoxyshikonin (1), isobutyrylshikonin (2), α-methylbutyrylshikonin (3), acetylshikonin (4), ß-hydroxyisovalerylshikonin (5), 5,8-O-dimethyl isobutyrylshikonin (6) and 5,8-O-dimethyl deoxyshikonin (7). Among the tested compounds, 3 and 4 exhibited the highest antibacterial activities toward all tested bacterial species (MIC50 and MIC90 for gram positive bacteria: 6.40 µg/mL-12.79 µg/mL and 6.82 µg/mL-13.60 µg/mL, respectively; for gram negative bacteria: 4.27 µg/mL-8.53 µg/mL and 4.77 µg/mL-9.54 µg/mL, respectively). Also, naphthoquinones 3 and 4 exhibited strong cytotoxic activity against MDA-MB-231 cells (IC50 values 86.0 µg/mL and 80.2 µg/mL, respectively), while compounds 1, 3, 4 and 5 significantly decreased viability of HCT116 cells (IC50 values of 97.8 µg/mL, 15.2 µg/mL, 24.6 µg/mL and 30.9 µg/mL, respectively). Our results indicated that all tested naphthoquinone pigments are potential candidates for clinical uses as antibacterial and cytotoxic agents

Solar energy application in houses heating systems in Russia

The solar energy is widely used around the world for electricity generation and heating systems in municipal services. But its use is complicated in the number of territories with uneven receipts of solar radiation on the earth’s surface and large number of cloudy days during a year. A hypothesis on the possibility of application of individual solar collectors for heating of houses in the number of cities of Russia has been tested. The existing designs of solar collectors and checking the possibility of their application in northern territories of Russia are investigated. The analysis was carried out taking into account features of relief and other climatic conditions of the Perm and Sverdlovsk regions. As the result of research, the basic recommended conditions for application of solar batteries in houses of the northern Russian cities have been resumed