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Wyszukujesz frazę "Oil" wg kryterium: Temat


Tytuł:
Prospects for development of the oil market in the world
Autorzy:
Rychlicki, S.
Stopa, J.
Powiązania:
https://bibliotekanauki.pl/articles/298924.pdf
Data publikacji:
2017
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
oil
oil resources
oil trade
oil prices
Opis:
Crude oil and natural gas were in the twentieth century and are still the most important strategic resources, which determine many aspects of politics and the world economy. The price level and the availability of oil and gas has a huge impact on the economic situation of all countries of the world. The developments in the oil market were the cause of many wars. The use of oil on an industrial scale it was observed at the end of the nineteenth century and once was considered the most effective source of energy for universal use. Since then, a steady increase of its share in the energy balances of the World. Growing automotive industry in the early twentieth century was also an important factor in increasing the use of oil, which is then processed in many emerging refineries. All this led to the development of the oil industry, which has become an alternative to coal as the main fuel so far. However, a major breakthrough in the use of oil occurred only after the Second World War, when began to rapidly develop such industries as chemical-based oil or plastics industry. This article presents information on traditional and prospective areas where oil deposits in the world and its resources as well as international trade, price formation in the market and prospects of development of the oil market in the world.
Źródło:
AGH Drilling, Oil, Gas; 2017, 34, 1; 27-36
2299-4157
2300-7052
Pojawia się w:
AGH Drilling, Oil, Gas
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of physical and chemical properties of crude coldpressed vegetable oils used to drive agricultural tractors
Autorzy:
Łaska, B.
Wawrzyniak, A.
Szulc, R.
Golimowski, W.
Pasyniuk, P.
Powiązania:
https://bibliotekanauki.pl/articles/335118.pdf
Data publikacji:
2013
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Maszyn Rolniczych
Tematy:
rapeseed oil
corn oil
sunflower oil
biofuel
Opis:
Crude vegetable oil may be used to drive self-ignition engines adjusted to this fuel. The aim of this study was to perform a comparative analysis of selected properties of cold-pressed crude vegetable oils used as biofuels. Physico-chemical properties of rapeseed oil (RO), sunflower oil (SO) and corn oil (CO) were compared. Density, kinematic viscosity, flash point, cold filter plugging point, calorific value, content of water, phosphorus, calcium and magnesium in oil were determined. Kinematic viscosity curves of crude oils at temperatures from 5°C to 50°C were defined. The kinematic viscosity was the lowest for corn oil and the highest for sunflower oil.
Źródło:
Journal of Research and Applications in Agricultural Engineering; 2013, 58, 2; 116-118
1642-686X
2719-423X
Pojawia się w:
Journal of Research and Applications in Agricultural Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Responding to spills of marine distillate fuels
Autorzy:
Halonen, J.
Powiązania:
https://bibliotekanauki.pl/articles/24201430.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
oil spill response
marine gas oil
usability testing
fuel Oii
marine oil spill
shipborne oil pollution
Marine diesel oil
oil spill recovery
Opis:
The current spill response capability in Finland is built to respond to oil spills caused by heavy fuel oils and the most transported oil cargoes. However, the implementation of the Sulphur Directive in 2015 changed the fuel profiles of the ships: prior to the new regulation ships operating in the Baltic Sea mainly used heavy fuel oil (HFO), whereas now ships use marine gas oil (MGO DMA) or marine diesel (MDO DMB) known as marine distillate fuels. This paper reviews the effectiveness of the current recovery techniques in responding to spills of marine distillate fuels based on the oil recovery field tests. The results indicate that conventional recovery techniques are only partially applicable to marine distillate fuels, which calls for a reassessment of the marine oil spill response capability and further research. The use and availability of low-carbon marine fuels will continue to increase as emission regulations become more stringent. This will require a continuous assessment of the oil recovery capabilities and the adaptation of spill response preparedness accordingly.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2023, 17, 3; 675--683
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermokinetic analysis of vegetable oil oxidation as an autocatalytic reaction
Autorzy:
Kowalski, B
Powiązania:
https://bibliotekanauki.pl/articles/1371362.pdf
Data publikacji:
1992
Wydawca:
Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:
oxidation
vegetable oil
kinetics
autocatalytic reaction
sunflower oil
edible oil
Źródło:
Polish Journal of Food and Nutrition Sciences; 1992, 01, 2; 51-60
1230-0322
2083-6007
Pojawia się w:
Polish Journal of Food and Nutrition Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The full or partial replacement of commercial marine engine oil with bio oil, on the example of linseed oil
Autorzy:
Malinowska, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/243510.pdf
Data publikacji:
2019
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
biolubricant
vegetable oil
linseed oil
engine oil
marine
mineral oil
inedible oil
viscosity
flash point
Opis:
The bio-oils are considered to sustainable, alternative and environmentally friendly source of lubricants compared to commercial engine oils, on the base a mineral, synthetic or semi-synthetic. They are obtained from natural raw material (vegetable or animal oils), which are renewable and non-toxic to humans, living organisms and environment. The vegetable oils called green oils, natural oils, bio-oils or natural esters. They can be obtained from plant seeds, that may be consumed – edible oils (for instance: rapeseed oil) or which cannot be consumed – inedible (for example: linseed oil). The conducted research into linseed oil and its different quantity additives (25% and 50%) to commercial marine mineral oil intended for a medium-speed 4-stroke, trunk marine engine (i.e. Marinol RG 1240). The flash point and dependence of viscosity and temperature were compared and assess. It has been proven that vegetable oils have a high ignition temperature and very small viscosity change in the range of temperatures presented, i.e. high viscosity index. According to the results, it can be recommended the addition of 25% linseed oil in the base lubricant is the relevant for lubricating a medium speed 4-stroke marine engine. The vegetable additives can improve a viscosity index a lube oil, and they will be positively affected environmental protection
Źródło:
Journal of KONES; 2019, 26, 3; 129-135
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characterization of lipids from vegetable bio-oils. II. Thermokinetic evaluation of oxidative stabilities of some vegetable oils
Autorzy:
Kowalski, B.
Pienkowska, H.
Zadernowski, R.
Powiązania:
https://bibliotekanauki.pl/articles/1371599.pdf
Data publikacji:
1993
Wydawca:
Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:
oil oxidation
oxidative stability
vegetable oil
lipid
food technology
oil
vegetable bio-oil
thermokinetic evaluation
Źródło:
Polish Journal of Food and Nutrition Sciences; 1993, 02, 4; 61-68
1230-0322
2083-6007
Pojawia się w:
Polish Journal of Food and Nutrition Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study of methods of hydrocarbon recovery enhancement from the depleted oil fields
Autorzy:
Kondrat, O.
Powiązania:
https://bibliotekanauki.pl/articles/298753.pdf
Data publikacji:
2013
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
field
wells
oil recovery
drilling
oil
Opis:
The article deals with the optimization of existing development system and oil recovery factor enhancement through the involvement to the development of productive bed areas with significant remaining oil reserves by using the hydrodynamic models of filtration processes of formation fluids in heterogeneous beds on the example of the sandstone deposit of the Boryslav field. The calculations for the different variants development in order to select the most rational one of the further development of a field were made. The task of the optimization was performed according to the criteria of the highest value of oil recovery factor.
Źródło:
AGH Drilling, Oil, Gas; 2013, 30, 1; 127-143
2299-4157
2300-7052
Pojawia się w:
AGH Drilling, Oil, Gas
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the impact of selected hydrometeorological conditions on the accuracy of oil spill simulations on the PISCES II simulator
Autorzy:
Jarząbek, D.
Juszkiewicz, W.
Powiązania:
https://bibliotekanauki.pl/articles/134904.pdf
Data publikacji:
2016
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
oil spill simulation
oil pollution characteristic
hydrometeorological conditions
oil pollution behavior
Opis:
Computer simulations used for predicting the behavior of oil spills at sea allow optimizing the deployment of oil spill response personnel and resources, and using the backtracking method to identify the polluter in cases where spills are sighted some time after they occurred. Predicting the direction and speed of oil slick spreading is of fundamental importance. An attempt was made to verify the influence of selected simulation parameters, related to hydrometeorological conditions, on the behavior of the resulting oil pollution. Different responses were obtained under the same simulated weather conditions, depending on the type of spilled oil. The experiment was conducted on a PISCES II oil spill simulator.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2016, 46 (118); 36-42
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the Impact of Weather Coditions on the Effectiveness of Oil Spill Recovery Operation in Simulated Conditions (PISCES II)
Autorzy:
Jarząbek, D.
Juszkiewicz, W.
Powiązania:
https://bibliotekanauki.pl/articles/320625.pdf
Data publikacji:
2017
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
oil spill simulation
oil pollution characteristic
hydrometeorological conditions
oil pollution behavior
Opis:
The ability to use computer simulation to predict the behavior of oil spills at sea enables better use of available personnel and resources to combat such spills. The use of oil collecting equipment properly selected to suit the conditions is essential for the operation to be effective. Therefore, an attempt is made to verify the influence of weather conditions on the efficiency of oil recovery. Three types of spilled crude oil were simulated. A relevant experiment was conducted on a PISCES II oil spill simulator.
Możliwość wykorzystania symulacji komputerowej do prognozowania zachowania się rozlewów olejowych na morzu umożliwia lepsze wykorzystanie posiadanych sił i środków służących do ich zwalczania. Zastosowanie odpowiednio dobranego do warunków sprzętu jest istotne z punktu widzenia efektywności prowadzonej akcji. W związku z tym podjęto próbę weryfikacji wpływu warunków meteorologicznych na skuteczność usuwania powstałego zanieczyszczenia olejowego. Zasymulowano rozlewy trzech typów ropy naftowej. Eksperyment przeprowadzono w symulatorze rozlewów olejowych PISCES II. Przeprowadzone symulacje wykazały istotny wpływ rodzaju ropy na skuteczność akcji usuwania zanieczyszczeń z powierzchni morza, im lżejsza ropa tym zbieranie przebiega w mniejszym stopniu z uwagi na jej rozpraszanie i utlenianie. Ropa ciężka tworzy grubą warstwę na powierzchni wody, może ulegać emulsyfikacji, wolniej ulega procesom utleniania, co prowadzi do efektywnego jej zbierania. Doświadczenie ukazało wpływ warunków meteorologicznych na sprawność zbierania ropy, przy wysokości fali 0 i 1 m usuwanie ropy za pomocą skimmera pasowego było skuteczne, a fala o wysokości 2 m uniemożliwiała usuwanie zanieczyszczeń ropopochodnych z powierzchni wody bez względu na jej rodzaj.
Źródło:
Annual of Navigation; 2017, 24; 315-326
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Oil trade in the context of oil price fluctuations at the turn of 2014 and 2015
Autorzy:
Pach-Gurgul, Agnieszka
Powiązania:
https://bibliotekanauki.pl/articles/421205.pdf
Data publikacji:
2017
Wydawca:
Akademia Ignatianum w Krakowie
Tematy:
oil
OPEC
oil shocks
oil price fluctuations
shale revolution
price war
Opis:
RESEARCH OBJECTIVE: Oil is one of the commodities with the highest global demand and the largest trade volumes. It is useful both as a raw material tapped to produce other goods, and, when processed, as a commodity in its own right. The purpose of the article is to present the directions of impact of oil price changes on its trade and to analyse factors affecting crude oil prices in period 2014‑2015 in the context of quick decrease of prices started in 2014. These analyses are crucial since changes of oil prices cannot be only explained by supply and demand. THE RESEARCH PROBLEM AND METHODS: Research topics were formulated as questions: Who is responsible for the slump in the prices of the most important global energy source in the international raw material market? What events in the global market caused the slump in oil prices? Did the slump in oil prices increase oil trade in 2014 and 2015? The article is largely conceptual, based on literature surveys, the analysis of sources and statistical data, comparative analysis, and the descriptive method. THE PROCESS OF ARGUMENTATION: The argument is composed of four basic parts. The first deals with the chief oil price-shaping mechanisms and their division into long-term and short-term drivers. The second outlines the situation in the global oil market in 2014. The third analyzes the causes of the slump in oil prices in 2014 and 2015. And, lastly, the fourth presents the possible impact of the slump on international oil trade. RESEARCH RESULTS: Chief price-shaping mechanisms in the oil market include: the supply-demand mechanism, global economic growth, OPEC policy, fluctuations in the US dollar exchange rate, geopolitical events, and the effect of speculation. Even though it is not possible to determine the precise role of each of these factors in shaping the situation in the oil market in 2014/2015, it seems that the slump in prices was primarily caused by a boost in shale oil production in the United States and the OPEC’s “price war” strategy. CONCLUSIONS, INNOVATIONS AND RECOMMENDATIONS: The situation in the global market in 2017 is likely to be influenced by the OPEC’s decision to reduce oil extraction taken at the summit in Vienna on 30 November 2016. From January 2017, production is to go down to 32.5 million barrels per day and the move is expected to stop the downward price trend. An increase in oil prices could already be noted the day after the decision; however, analysts doubt that the trend will last.
Źródło:
Horyzonty Polityki; 2017, 8, 25; 95-110
2082-5897
Pojawia się w:
Horyzonty Polityki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Oil Spill Models: A State of the Art of the Grid Map as a Function of Wind, Current and Oil Parameters
Autorzy:
Mazurek, J.
Smolarek, L.
Powiązania:
https://bibliotekanauki.pl/articles/116520.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
oil spill
Oil Spill Model
Grid Map
wind
current
Oil Parameters
Opis:
An integrated model, which contains flow and transport‐fate modules, will be presented for simulating transport and fate of oil spills at seas. The flow module uses different kinds of meshes that provide great flexibility for modeling the flow in complex geometries of currents and barriers. The refined grid resolution in regions of interest is important. Horizontal diffusion is simulated using random walk techniques in a Monte Carlo framework, whereas the vertical diffusion process can be solved on the basis of the Langeven equation. The model contains the most significant processes which affect the motion of oil particles. For a better fit to the curvature of the coastline there are used unstructured non overlapping rectangular or triangle grid cells. Special attention must be paid to choose the horizontal and vertical resolution in simulating the oil trajectory in the coastal area.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2013, 7, 1; 19-23
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocenka syr'evojj bazy proizvodstva dizel'nogo biotopliva pri dvukhstupenchatym otzhime rastitel'nogo masla
Assessment resource base biodiesel production with two-step press vegetable oil
Autorzy:
Golub, G.
Pavlenko, M.
Olar, H.
Powiązania:
https://bibliotekanauki.pl/articles/76927.pdf
Data publikacji:
2014
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
vegetable oil
biodiesel fuel
biodiesel production
cold pressed oil
hot pressed oil
Źródło:
Motrol. Motoryzacja i Energetyka Rolnictwa; 2014, 16, 3
1730-8658
Pojawia się w:
Motrol. Motoryzacja i Energetyka Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of the effectiveness of selected essential oils with mineral oil and spinosad on Dermanyssus gallinae
Autorzy:
Roczeń-Karczmarz, M.
Demkowska-Kutrzepa, M.
Zdybel, J.
Szczepaniak, K.
Studzińska, M.
Tomczuk, K.
Powiązania:
https://bibliotekanauki.pl/articles/16539169.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
Dermanyssus
mite
essential oil
mineral oil
spinosad
Opis:
It seems that essential oils can be a good ingredient in effective preparations against Dermanyssus gallinae. Dermanyssus affects animal health leading to financial losses and bird welfare issues. Collected mites were treated with various essential oils in four (20, 50, 80 and 100%) concentrations at a dose of 0.28 mg/cm2. The direct toxicity of the essential oils, mineral oil and spinosad to D. gallinae was tested in the laboratory. Eucalyptus oil was the most toxic essential oil in all concentrations to D. gallinae (87.6 - 97.6% mortality at all four concentrations), while geranium, pine and rosemary oils showed mortality rates of 14.2 - 68.2%. High mortality after 48 hours of contact was also recorded for the oil of cloves at 80% dilution (85.1% mortality), lavender 100% (94.2% mortality). Similarly, the thyme essential oil produced 83.5 - 93.2% mortality in three concentrations: 50, 80 and 100%. The mineral oil was the least effective oil against mites. Spinosad showed high effectiveness against D. gallinae.
Źródło:
Polish Journal of Veterinary Sciences; 2022, 25, 2; 261-268
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Badanie wydajności prasy ślimakowej i sprawności tłoczenia oleju w warunkach zimowych i letnich
The study on screw press performance and the efficiency of oil extrusion in winter and summer
Autorzy:
Łaska, B.
Myczko, A.
Golimowski, W.
Powiązania:
https://bibliotekanauki.pl/articles/238695.pdf
Data publikacji:
2012
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
olej rzepakowy
biopaliwo
tłoczenie
uzysk oleju
rapeseed oil
biofuel
oil pressing
oil yield
Opis:
Temperatura nasion rzepaku, podczas produkcji oleju z wykorzystaniem technologii tłoczenia na zimno, wpływa na parametry procesu, szczególnie zimą, gdy jest niska. Celem badań była ocena wpływu temperatury nasion rzepaku na parametry procesu jednoetapowego tłoczenia oleju na zimno. Badano wpływ temperatury nasion rzepaku zmagazynowanych w silosie poziomym (10 ±1°C zimą i 23 ±2°C latem) na wydajność prasy, wyrażaną w kg·h–1 tłoczonych nasion rzepaku, i uzysk oleju, czyli stosunek masy oleju do masy nasion rzepaku wyrażony w %. Eksperyment przeprowadzono w okresie letnim i zimowym, na dwóch, pracujących równolegle, prasach ślimakowych, o wydajności 18-25 kg·h-1 nasion rzepaku. Z przeprowadzonych badań wynika, że uzysk oleju zimą wynosił średnio 19,7% i był o ok. 32% mniejszy niż latem (średnio 29%). Wydajność prasy zimą wynosiła średnio 44,5 kg·h-1 i była o 18,7% większa niż latem (36,15 kg·h-1).
Rapeseed temperature affects the technological process of cold oil pressing, especially in winter. The aim of study was to evaluate the effect of rapeseed temperature on the parameters of single-stage cold oil pressing. The influence of temperature was tested for rapeseeds stored in a horizontal silo (10 ±1°C in winter and 23 ±2°C in summer). The output of screw press (kg·h-1 pressed rapeseeds) and yield of extracted oil (mass percentage of oil to the mass of rapeseeds) were determined. Experiments were conducted in the summer and winter periods, on double screw presses working in parallel, at rated rapeseed output 18–25 kg·h-1. Test results showed that the average yield of oil in winter amounted to 19.7%, being by 32% lower than in the summer (29% on average). The output of screw press in winter reached on average 44.5 kg·h-1, being by 18.7% higher than in the summer (36.15 kg·h-1).
Źródło:
Problemy Inżynierii Rolniczej; 2012, R. 20, nr 4, 4; 163-170
1231-0093
Pojawia się w:
Problemy Inżynierii Rolniczej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of oil waste homogenizing on its morphology to improve burning conditions in marine auxiliary boilers
Autorzy:
Jasiewicz, R.
Powiązania:
https://bibliotekanauki.pl/articles/359920.pdf
Data publikacji:
2013
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
oil waste
oil waste morphology
homogenization
homogenizing devices
burning oil waste
auxiliary boilers
Opis:
The article presents analysis of the influence of selected methods alongside with devices applied to process oil waste from engine power room plants on the changes in oil waste morphology in order to improve burning conditions in auxiliary boilers. Study results facilitated the choice of the most favourable method, in view of environmental protection, of preparing oil waste to burn so that the waste is transformed into fuel for auxiliary boilers on the ship. Burning oil waste entails changes in its morphology, therefore, measurements of toxic emissions of CO and NOx have been conducted for each of the different processing methods.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2013, 36 (108) z. 2; 51-55
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł

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