Search
Filters
total: 1138
filtered: 885
Search results for: bitumen emulsion
-
Power balance in hydraulic satellite motors supplied with oil and HFA-E emulsion
PublicationMineral oil and HFA-E emulsion are liquids which differ in viscosity, density and lubricant properties. Therefore, supplying hydraulic satellite motors with these liquids, differences between quantity of hydraulic, volumetric and mechanical losses are observed. These losses influence efficiency of conversion of hydraulic energy into mechanical energy and thereby power balance of motors.
-
Effective rheological parameters of emulsion during their generation in the agitated draft - tube reactor
PublicationBadano właściwości reologiczne emulsji O/W i W/O w warunkach ich wytwarzania w pętlicowym reaktorze dwukolumnowym z mieszaniem w strefie wznoszenia. Obliczano lepkość pozorną emulsji, wykorzystując model potęgowy Ostwalda - de Waele, w którym szybkość ścinania obliczano jako stosunek prędkości pozornej dyspersji ciecz - ciecz w strefie opadania reaktora i szerokości strefy opadania. W celu identyfikacji typu emulsji mierzono przewodnictwo...
-
Zeta potential, effective diameter and multimodal size distribution in oil/water emulsion
Publication -
Phase transitions and microstructure of emulsion systems prepared with acylglycerols/zinc stearate emulsifier
PublicationZbadano przemiany fazowe jakim ulegają układy emulsyjne w czasie procesu emulgowania, prowadzonego w obecności emulgatora acyloglicerolowego modyfikowanego stearynianem cynku. Rodzaj przemian mikrostrukturalnych jakim ulegały emulsje zależny był w głównej mierze od temperatury oraz zawartości fazy wodnej. Obserwowano powstawanie emulsji typu W/O, która wraz z obniżaniem temperatury ulegała inwersji prowadzącej do powstania dyspersji...
-
Water Behavior of Emulsions Stabilized by Modified Potato Starch
Publication -
The application of membrane distillation for the concentration of oil-water emulsions
Publication -
Stability of oil/water (ethanol, lysozyme or lysine) emulsions
Publication -
Electrokinetic properties of n-tetradecane/lecithin solution emulsions
Publication -
Bile conjugation and its effect on in vitro lipolysis of emulsions
PublicationBile Salts (BS) are responsible for stimulating lipid digestion in our organism. Gut microbiota are responsible for the deconjugation process of primary conjugated to secondary unconjugated BS. We use two structurally distinct BS and characterize the rate of lipolysis as a compound parameter. A static in-vitro digestion model as well as meta-analysis of literature data has been performed to determine the most influential factors...
-
Air Pollutant Emission Measurement
Publication -
Geochemical fractionation of organic matter in the Jurassic-Cretaceous Vaca Muerta shale, Argentina
PublicationSeveral studies have indicated the presence of more than one generation of bitumen that could be isolated from rocks through sequential extraction or after demineralization or both. Nabbefeld et al. (2010a) and Holman et al. (2012, 2014) termed bitumen obtained after solvent extraction from the undigested rock as “Bitumen I" and that obtained by extraction after demineralization of rock as “Bitumen II.” The occurrence of different...
-
Studies of oil-in-water emulsion stability in the presence of new dicephalic saccharide-derived surfactants
Publication -
Losses and power balance in hydraulic satellite motor supplied with oil and HFA-E emulsion
PublicationMineral oil and HFA-E emulsion are liquids which differ in viscosity, density and lubricant properties. Therefore, supplying hydraulic satellite motor with these liquids, differences between quantity of hydraulic, volumetric and mechanical losses are observed. These losses influence efficiency of conversion of hydraulic energy into mechanical energy and thereby power balance of motor. The research of satellite motor has been conducted...
-
The Impact of Long-Time Chemical Bonds in Mineral-Cement-Emulsion Mixtures on Stiffness Modulus
PublicationDeep cold in-place recycling is the most popular method of reuse of existing old and deteriorated asphalt layers of road pavements. In Poland, in most cases, the Mineral-Cement-Emulsion mixture technology is used, but there are also applications combining foamed bitumen and cement. Mineral-Cement-Emulsion mixtures contain two different binding agents – cement as well as asphalt from the asphalt emulsion. Asphalt creates asphalt...
-
Terminal and hindered settling of solid particles in O/W emulsions
PublicationProwadzono badania szybkości opadania swobodnego cząstek stałych w emulsjach typu O/W oraz sedymentacji zawiesin ciało stałe - emulsja. Zbadano wpływ stężenia zawiesiny na szybkość sedymentacji. Opracowano zależność na prędkość opadania cząstek stałych w zawiesinacjh w emulsjach O/W w zakresie ruchu laminarnego.
-
Influence of dipalmitoylphosphatidylcholine (or dioleoylphosphatidylcholine) and phospholipase A2 enzyme on the properties of emulsions
Publication -
ANALYSIS OF CLIMATIC ZONES IN POLAND WITH REGARD TO ASPHALT PERFORMANCE GRADING
PublicationTowards the end of the last century a new system of bitumen grading was developed and implemented as part of the American Strategic Highway Research Program (SHRP). Its aim was to better adjust the testing methods and requirements for road bitumens to the actual conditions in which those bitumens serve in road pavements. Currently in Poland, similarly as in the other EU countries, road bitumens are tested and classified with regard...
-
Determination of modifier contents in polymer-modified bitumens and in samples collected from the roads using high performance gel permeation/size exclusion chromatography
PublicationThis paper describes application of high performance gel permeation/size exclusion chromatography (HP-GPC/SEC) for the determination of content of polymer modifiers in modified road bitumens. The obtained results were compared with the measurements based on the procedure recommended by the American Association of State Highway and Transportation Officials, which employs Fourier transform mid-infrared spectroscopy (mid-IR FTIR)....
-
Pressure dependence of the emission in CaF2 : Yb2+
Publication -
Plant Extracts Containing Saponins Affects the Stability and Biological Activity of Hempseed Oil Emulsion System
Publication -
An efficient method of Yarrowia lipolytica immobilization using oil- and emulsion-modified bacterial cellulose carriers
Publication -
Effect of Temperature on n-Tetradecane Emulsion in the Presence of Phospholipid DPPC and Enzyme Lipase or Phospholipase A2
Publication -
Effect of different crystalline structures on W/O and O/W/O wax emulsion stability
PublicationtThe possibility of emulsion stabilization using mineral and vegetable wax particles only (without sur-factant) was investigated. Mineral waxes, paraffin wax and ceresin, and a vegetable wax, carnauba wax,were used. The content of the wax particles and the water to oil proportion were found crucial for thestability of all emulsions. Some emulsions were also produced with a liquid wax (i.e. jojoba oil). Themultiple light scattering...
-
Effect of ionic strength on electrokinetic properties of oil/water emulsions with dipalmitoylphosphatidylcholine
Publication -
Zeta potential and droplet size of n-tetradecane/ethanol (protein) emulsions
Publication -
Production of fine droplet emulsions in the agitated draft-tube column reactor
PublicationBadano rozkłady wielkości kropel emulsji woda - olej parafinowy w reaktorze dwukolumnowym z mieszaniem w kolumnie wewnętrznej jako strefie wznoszenia. Stosując model dyspersyjny w układzie zamkniętym z całkowitą recyrkulacją, wyznaczono obwodowe i strefowe współczynniki dyspersji
-
Influence of zinc and magnesium carboxylates on properties of emulsions stabilized with acylglycerol emulsifiers.
PublicationOkreślono właściwości emulsji stabilizowanych emulgatorami acyloglicerolowymi modyfikowanymi karboksylanami cynku i magnezu. Zbadano wpływ kompozycji emulgatorów na HLB i efektywność w modelowych układach emulsyjnych.
-
Effective method of treatment of effluents from production of bitumens under basic pH conditions using hydrodynamic cavitation aided by external oxidants
PublicationUtilization of cavitation in advanced oxidation processes (AOPs) is a promising trend in research on treatment of industrial effluents. The paper presents the results of investigations on the use of hydrodynamic cavitation aided by additional oxidation processes (O3/H2O2/Peroxone) to reduce the total pollution load in the effluent from the production of bitumens. A detailed analysis of changes in content of volatile organic compounds...
-
Substance flow analysis for mercury emission in Poland
Publication -
Mercury emission to air, water and soil in Poland
Publication -
Emission of Particles and VOCs at 3D Printing in Automotive
Publication -
Diagnostics of high-voltage varistors by acoustic emission
PublicationWarystory, szeroko stosowane w ogranicznikach przepięć, powinny być testowane na końcowym etapie ich wytwarzania. Stosowane metody testowania wymagają użycia wysokich napięć i prądów o dużych natężeniach, co jest nidogodne, destrukcyjne i wymaga poboru relatywnie dużych pocy. W artykule zaproponowano zastosowanie analizy sygnału emisji akustycznej do predykcji jakości struktury warystora. Opisano system przygotowany do tej aplikacji,...
-
The forming and emission of high power electromagnetic pulses
PublicationAn impulse energy source, a power conditioning system and an electromagnetic field emitter are essential to generate an electromagnetic field pulse (EMFP) with a specific frequency bandwidth. Selected simulation results for a power conditioning system consisting of a fuse opening switch and a paraboloidal electromagnetic emitter have been presented in this article. The synthetic system examined in the simulation is powered by...
-
Emission of CO2 and Fuel Consumption for Automotive Vehicles
Publication -
Lack of magnetoacoustic emission in iron with 6.5% silicon
PublicationZjawisko emisji magnetoakustycznej (EMA) na ogół tłumaczy się dwoma przyczynami: ruchem nie 180-cio stopniowych granic domenowych (1) lub kreacją i anihilacją domen magnetycznych. Artykuł prezentuje silne dowody na poparcie faktu, że to właśnie ruch granic nie 180-cio stopniowych odpowiada za powstawanie efektu EMA. Wynika to z wyników pomiarów dających zerowe natężenie efektu EMA przeprowadzonych dla szerokiego zakresu naprężeń...
-
Global anthropogenic mercury emission inventory for 2000
PublicationW pracy przedstawiono aktualny stan wiedzy na temat globalnej emisji rtęci oraz wyniki inwentaryzacji tej emisji do atmosfery ze źrodeł antropogennych w roku 2000. Największy udział w tej emisji ma spalanie paliw, głównie węgla w energetyce, przemyśle i w paleniskach domowych. Obliczono, że dwie trzecie całkowitej emisji wynoszącej około 2190 ton zostało wyemitowane do atmosfery w roku 2000 z tych własnie źrodeł. Emisja rtęci ze...
-
The forming and emission of high power electromagnetic pulses
PublicationAn impulse energy source, a power conditioning system and an electromagnetic field emitter are essential to generate an electromagnetic field pulse (EMFP) with a specific frequency bandwidth. Selected simulation results for a power conditioning system consisting of a fuse opening switch and a paraboloidal electromagnetic emitter have been presented in this article. The synthetic system examined in the simulation is powered by an...
-
High Frequency Harmonics Emission in Smart Grids
PublicationPulse-width modulated rectifiers are nowadays commonly used for AC to DC power conversion. PWM rectification technology is very effective and allows for bidirectional power flow with the possibility of power factor improvement and low-order harmonic emission limitation. Unfortunately, employed PWM boost topology results with generation of input current harmonic distortions in a frequency range tightly correlated to modulation frequency....
-
High-efficient, zero-emission energy production
PublicationThis paper presents innovative thermodynamiccycles with high-efficient, zero-emission energy production. The main aim of this work is to show the role of nano-phenomena in the enhancement of the power of thermodynamic cycles. For that purpose, the cycles using oxy-combustion and spray ejected condensation are first studied and, secondly hybrid cycles using fuel cells and gas turbines are presented. The role of nano-phenomena in...
-
Emission mechanisms in organic light-emitting diodes
PublicationGlównym przedmiotem opracowania jest powiązanie optycznych i elektrycznych charakterystyk organicznych diod elektroluminescencyjnych. Szczególną uwagę zwrócono na występowanie różnych rodzajów stanów wzbudzenia elektronowego prowadzących do wydajnego świecenia diod elektroluminescencyjnych.
-
Examining Acoustic Emission of Engineered Ultrasound Loudspeakers
PublicationMeasurement results of the sound emitted from an ultrasound custom-made system with high spatial directivity are presented. The proposed system is using modulated ultrasound waves which demodulate in nonlinear medium resulting in audible sound. The system is aimed at enhancing the users’ personal audio space, therefore the measurements are performed using the Head and Torso Simulator which provides the realistic reproduction of...
-
Wear of carbide inserts during turning of C45 steel in dry cutting conditions and in presence of emulsion mist
Publication -
The Effect of Powder and Emulsion Binders on the Tribological Properties of Particulate Filled Glass Fiber Reinforced Polymer Composites
Publication -
The bile salt/phospholipid ratio determines the extent of in vitro intestinal lipolysis of triglycerides: Interfacial and emulsion studies
PublicationThis study focused on the protein-stabilised triglyceride (TG)/water interfaces and oil-in-water emulsions, and explored the influence of varying molar ratios of bile salts (BSs) and phospholipids (PLs) on the intestinal lipolysis of TGs. The presence of these two major groups of biosurfactants delivered with human bile to the physiological environment of intestinal digestion was replicated in our experiments by using mixtures...
-
Research of low-speed high torque planet motors supplied with oil-in-water emulsion as working liquid.
PublicationWiększość hydraulicznych układów napędowych obecnie jest zasilanych olejami. Ale olej jako medium robocze nie może być stosowany wszędzie tam, gdzie istnieje ryzyko pożaru. dlatego też są stosowane trudnopalne i niepalne ciecze hydrauliczne ja: emulsje, mikroemulsje i roztwory. W referacie opisano stanowisko badawcze zaprojektowane i zbudowane w Katedrze Hydrauliki i Pneumatyki PG, przedstawiono wyniki badań hydraulicznego silnika...
-
Small-scale passive emission chamber for screening studies on monoterpene emission flux from the surface of wood-based indoor elements
PublicationAnalysis of literature data published in the last fewyears leads to the conclusion that in the process of assessment of emission flux of organic compounds emitted from different types of equipment and finishing materials, new types of devices, among which small-scale passive emission chambers for the performance of in-situ research are designed and applied on a larger scale. These devices can be successfully used for the assessment...
-
Viability of fruit seed oil O/W emulsions in personal care products
PublicationThe use of fruit seed oils in personal care products is of significance to both their function and image. Poland is an important processor of fruit products within the EU, and thus has a large availability of seeds from domestic fruits, which are normally considered to be a waste material or feed for livestock. Unfortunately, current literature is scarce of the suitability of these oils for topical dermatological use in the form...
-
Properties of W/O emulsions stabilized with acylglycerol emulsifiers modified with zinc carboxylates.
PublicationZbadano właściwości modelowych emulsji W/O, stabilizowanych emulgatorami acyloglicerolowymi, modyfikowanymi karboksylanami cynku. Przedstawiono wyniki mikroskopowej, konduktometrycznej i kalorymetrycznej analizy wpływu składu i stężenia emulgatora oraz zawartości fazy wodnej na wielkość kropel fazy rozproszonej emulsji i stabilność układu dyspersyjnego.
-
Emulsifying blends based on natural fats for eco-design of O/W emulsions
PublicationEmulsifier blends are most often used to stabilize and modulate the properties of cosmetic and pharmaceutical emulsions, such as skin care or application-related consistency. However, the rational design of such emulsifier blends is often not well understood, especially when their ingredients are natural raw materials. This study aimed to analyze the influence of natural fatty ingredients selected as emulsifiers on the emulsion...
-
Microstructure and functional properties of sorbitol-plasticized pea protein isolate emulsion films: Effect of lipid type and concentration
Publication