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Wyświetlanie 1-10 z 204
Tytuł:
Small wood waste fired combined heat and power plant. Possible use of wood biomass for the generation of electric and heat energy as an alternative to fossil fuels
Autorzy:
Dzida, M.
Powiązania:
https://bibliotekanauki.pl/articles/2073647.pdf
Data publikacji:
2015
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
renewable energy sources
wood biomass
power plant system
Opis:
This article discusses the possibility of burning wood biomass instead of fossil fuels in boilers. It describes the properties of wood biomass, including the variation of its calorific value depending on the moisture content of wood. The article proposes several variants of a combined heat and power plant (CHP) system burning wood biomass for the generation of electric and heat energy, using the energy contained in exhaust gases for drying wood biomass.
Źródło:
Journal of Polish CIMEEAC; 2015, 10, 1; 53--61
1231-3998
Pojawia się w:
Journal of Polish CIMEEAC
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cd and Pb in the “soil-plant” system of Holosiyiv green park area in Kyiv
Autorzy:
Ryzhenko, Nataliia
Yastrebtsova, Nataliia
Ryzhenko, Dmytro
Powiązania:
https://bibliotekanauki.pl/articles/2088186.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
trace metals (Cd
Pb)
Holosiyiv green park zone
soil-plant system
plant up-taking indexes
Opis:
In this paper, the content of metals (Cd and Pb) was investigated in soil-plant system of Holosiyiv green park area in Kyiv. Kyiv is the capital and largest city of Ukraine, and has an anthropogenic load. Metals pollution in various degrees in green park areas may affect people’s health through different paths. We propose to control the lead contamination in soil because Pb concentration levels were above when compared with background values in almost all samples of soil and exceeded the maximum permissible concentration in sites of top of hills in park. Moreover, the obtained results indicated high concentrations of lead in studied plants; most of them are medicinal and traditionally used by people. The highest phytomass concentration of Pb was observed in Asarum europaeum L., whereas Impatiens parviflora DC and Urtica dioica L. had the highest plant up-taking indexes for both studied metals.
Źródło:
Polish Journal of Soil Science; 2020, 53, 2; 199-210
0079-2985
Pojawia się w:
Polish Journal of Soil Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Exchange of water in the soil-plant-atmosphere system
Autorzy:
Kutilek, M.
Novak, V.
Powiązania:
https://bibliotekanauki.pl/articles/25010.pdf
Data publikacji:
1998
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
evaporation
soil-plant-atmosphere system
water exchange
soil
atmosphere
evapotranspiration
plant
Źródło:
International Agrophysics; 1998, 12, 1
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mycorrhizal fungi and microalgae modulate antioxidant capacity of basil plants
Autorzy:
Hristozkova, M.
Gigova, L.
Geneva, M.
Stancheva, I.
Vasileva, I.
Sichanova, M.
Mincheva, J.
Powiązania:
https://bibliotekanauki.pl/articles/65815.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
arbuscular mycorrhiza
mycorrhizal fungi
fungi
microalga
antioxidant capacity
basil
medicinal plant
Lamiaceae
Ocimum basilicum
soil microalga
Cyanoprokaryota
soil-plant system
Opis:
Mycorrhizal fungi, algae and cyanobacteria are some of the most important soil microorganisms and major components of a sustainable soil-plant system. This study presents for the first time evidence of the impact of green alga and cyanobacterium solely and in combination with arbuscular mycorrhizal fungi (AMF) on plant-antioxidant capacity. In order to provide a better understanding of the impact of AMF and soil microalgae on Ocimum basilicum L. performance, changes in the pattern and activity of the main antioxidant enzymes (AOEs), esterases and non-enzymatic antioxidants including phenols, flavonoids, ascorbate, and α-tocopherols were evaluated. The targeted inoculation of O. basilicum with AMF or algae (alone and in combination) enhanced the antioxidant capacity of the plants and the degree of stimulation varied depending on the treatment. Plants in symbiosis with AMF exhibited the highest antioxidant potential as was indicated by the enhanced functions of all studied leaf AOEs: 1.5-, 2- and more than 10-fold rises of superoxide dismutase (SOD), glutathione-S-transferase (GST) and glutathione reductase (GR), respectively. The greatest increase in the total esterase activity and concentration of phenols, flavonoids and ascorbate was marked in the plants with simultaneous inoculation of mycorrhizal fungi and the green algae. 2,2-diphenyl-1-pycril-hydrazyl (DPPH) free radical scavenging method and ferric reducing antioxidant power (FRAP) assay proved the increased plant antioxidant capacity after co-colonization of green algae and mycorrhizae.
Źródło:
Journal of Plant Protection Research; 2017, 57, 4
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Matematicheskaja model' vlijanija teplovogo rezhima na rozvitie i urozhajjnost' tomatov v sisteme rastenie-pochva-vozdukh
Mathematical model influence of thermal regime on growth
Autorzy:
Bolbot, I.
Powiązania:
https://bibliotekanauki.pl/articles/76603.pdf
Data publikacji:
2013
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
mathematical model
thermal regime
crop
plant growing
tomato
greenhouse
soil-plant-air system
Opis:
The mathematical model impact of thermal regime on the development and yield of tomato in the system soil-plant-air. The model describes the qualitative and quantitative growth and development of plants that are in close interaction with the dynamic parameters of the environment in the greenhouse.
Źródło:
Motrol. Motoryzacja i Energetyka Rolnictwa; 2013, 15, 4
1730-8658
Pojawia się w:
Motrol. Motoryzacja i Energetyka Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Recommendations for Training of Crews Working on Diesel-Electric Vessels Equipped with Azimuth Thrusters
Autorzy:
Pipchenko, O. D.
Tsymbal, M.
Shevchenko, V.
Powiązania:
https://bibliotekanauki.pl/articles/116343.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
diesel-electric vessels
azimuth thrusters
crew training
ship propulsion
power plant system
azimuth propulsion
risk matrix
emergency steering
Opis:
This study addresses the problem of training the officers, which are assigned to an electrical-driven vessels equipped with azimuth thrusters. A pair of omnidirectional thrusters in combination with power plant system containing several diesel generators imply a potential for a variety of different emergency scenarios, which also includes partial or full loss of control or blackout. These fault scenarios were classified in the article with predefined risk levels depending on the area, time limitation, mode of operation and fault itself. Mutual responsibilities and action algorithms for bridge and engine teams in a step-by-step manner have been developed for each scenario. Personnel behavioral differences in both expected and unexpected emergencies have also been studied.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2018, 12, 3; 567-571
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Navigation’s safety improving by efficiently analysis of the ship’s power Plant energy flows interconnection
Autorzy:
Veretennik, A.
Kulyeshov, I.
Mikhailov, S.
Powiązania:
https://bibliotekanauki.pl/articles/2086298.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
navigation’s safety
safety at sea
ship's power plant
power plant energy flows
autonomous movable objects
mechanical energy flow
power plant system
efficiently analysis
Opis:
The operation of an autonomous movable objects, such as a sea transport vessels, implies the presence of a source of potential energy on board the vessel and the possibility of converting this energy into the work required for the autonomous movable object (vessel). Being an autonomous object, a transport vessel should be provided with energy for it moving, energy for heat exchange processes on board and electricity for powering electrical equipment, automation and navigation systems, and household needs on board. An analysis of the component of the engine room equipment made it possible to designate (combine) the generating equipment of mechanical energy flow, equipment which are generating the heat energy flow and equipment which are generating the electric energy flow. Based on the results of the research the relationships between the energy flows are identified connections and ways to ensure stabilization of energy generation on board the cargo vessel is outlined. Using the results of the research the relationships between the energy flows will reduce the likelihood of accidents on board a cargo vessel due to a stop in the generation of one of the energy flows and thereby ensure increased safety of man at sea. Taking into account the peculiarities of the distribution of energy flows in ship power plants can be an effective tool not only to improve the economic performance of it, but also to increase the safety of navigation and navigation in general, due to the reliable provision of uninterrupted and efficient operation of ship power plants.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2022, 16, 1; 39--42
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Role of agrophysics in the concept of sustainable agriculture
Autorzy:
Glinski, J.
Walczak, R.T.
Powiązania:
https://bibliotekanauki.pl/articles/24072.pdf
Data publikacji:
1998
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
soil-plant-atmosphere system
energy exchange
physicomechanical process
agriculture
sustainable agriculture
plant material
agrophysics
Źródło:
International Agrophysics; 1998, 12, 1
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Increasing metrological autonomy of in-plant measuring systems
Autorzy:
Mykyychuk, M.
Kochan, R.
Kochan, O.
Jun, S.
Stadnyk, B.
Stolyarchuk, P.
Powiązania:
https://bibliotekanauki.pl/articles/102200.pdf
Data publikacji:
2016
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
metrological autonomy
in-plant measuring system
measuring equipment
metrological reliability
comparison
calibration
Opis:
The authors offer to solve the problem of providing traceability of measurements by increasing metrological autonomy of in-plant measuring systems. The paper shows the expedience of increasing metrological autonomy by creating a “virtual” reference. There are analysed possible variants of implementation of the “virtual” reference, which will provide high metrological stability of measurements at insignificant additional expenses. The authors point out the necessity of creation of universal technical and programmatic means of mutual comparison for the in-plant measuring systems to increase the reliability of measurements in the conditions of metrological autonomy.
Źródło:
Advances in Science and Technology. Research Journal; 2016, 10, 32; 193-197
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-10 z 204

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