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The effect of high pressure and subzero temperature on gelation of washed cod and salmon meat
PublicationThe objective of the present work is to examine the infl uence of pressure up to 193 MPa at subzero temperature (without freezing of water) on myofi brillar proteins of salmon and cod meat and on the properties of gels obtained from washed mince of these fi sh. The solubility of proteins from myofi brils of cod and salmon meat suspended in 100 mM KCl solution increased aft er treating the samples with pressure above 60 MPa. The...
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Effect of gelation and storage conditions on the oxidative stability of microemulsion and nanoemulsion delivery systems
PublicationIncreased interest in the use of microemulsion and nanoemulsion delivery systems for medical, cosmetic and food purposes, promotes the development of research on their physical and chemical stability, and the safety of use. Here, we have for the first time evaluated the oxidative stability of linseed oil dispersed in the microemulsion, nanoemulsion, and their gelled systems, stored under different conditions, and compared to the...
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Effect of Individual Components of Lignocellulosic Biomass on Methane Production and Methanogen Community Structure
PublicationOne of the major factors that influences the economic feasibility of biogas production is the availability of digestible feedstocks. There is little research on the influence of the chemical composition of biomass on biogas synthesis, especially with regard to the content of lignocellulosic materials. Therefore, the aim of this study was to estimate how differences in the content of cellulose and lignin in lignocellulosic biomass...
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Effect of MgSO4 nutrition on Theobroma cacao L. susceptibility to Phytophthora megakarya infection
PublicationA new strategy to reduce the severity of black pod disease (BPD) in T. cacao plants using MgSO4 nutrition was investigated. The dynamics of the tolerance to BPD of 18 susceptible T. cacao plantlets coming from the cross (♀SNK64 × ♂UPA14) was monitored during weekly (8 weeks) supply of MgSO4 into the soil. Prior to MgSO4 application, disease scores of the 18 plantlets (in six sets of three plantlets per set) were varying between...
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Design and Application of Magnetic Photocatalysts for Water Treatment. The Effect of Particle Charge on Surface
PublicationCore-interlayer-shell Fe3O4/SiO2/TiO2, CoFe2O4/SiO2/TiO2 and BaFe12O19/SiO2/TiO2 magnetic photocatalysts were obtained. A water-in-oil microemulsion system with suitable surfactants was used for functionalization of the magnetic core with silica interlayer and TiO2-based photocatalyst. Uncoated and coated particles were characterized by electrophoretic meaurements, X-ray diffractometry (XRD), scanning electron microscopy (SEM),...
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Effect of porosity on physical properties of lightweight cement composite with foamed glass aggregate
PublicationThis paper reports on a study of physical properties of lightweight cement composite. We investigate the possibility of replacing traditional aggregate with Granulated Ash Aggregate (GAA) and above all with Granulated Expanded Glass Aggregate (GEGA). For this purpose, 15 specimens of different percentage share of each aggregate in total aggregate volume were tested: 0%, 25%, 50%, 75% or 100% of foam glass aggregate (GEGA) partially...
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Instantaneous impedance monitoring of synergistic effect between cavitation erosion and corrosion processes
PublicationThe most common method of determination of cavitation erosion resistance as well as the magnitude of erosion-corrosion synergistic interaction is based on the weight loss measurements. Nondestructive characterization of installations elements is in most cases impossible to perform. Also, such a measurement does not include local types of failure or alteration of operating conditions. There is an urge to elaborate a method for monitoring...
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Shape-dependent enhanced photocatalytic effect under visible light of Ag3PO4 particles
PublicationSilver phosphate (Ag3PO4) could be considered as visible light induced photocatalyst for pollutants degradation, due to its narrow band gap (∼2.4 eV). However, Ag3PO4 photoactivity depends on surface properties and synthesis route. In this study, differently shaped Ag3PO4 photocatalysts have been synthesized through the precipitation, ion exchange, soft-chemical or hydrothermal method. To correlate surface properties with photoactivity all...
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The Biocompatibility and Self-Healing Effect of a Biopolymer’s Coating on Zn Alloy for Biomedical Applications
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Interactive Effect of Heart Rate and Muscle Sympathetic Nerve Activity on Blood Pressure
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Shortening baroreflex delay in hypertrophic cardiomyopathy patients – an unknown effect of β‐blockers
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A plateau-valley separation approach (PVSA) for reduction of the end-effect in surface metrology
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On the Effect of Non-Thermal Atmospheric Pressure Plasma Treatment on the Properties of PET Film
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Effect of UV radiation and chitosan coating on the adsorption-photocatalytic activity of TiO2 particles
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Effect of Melanin on the Stability of Casein Films Exposed to Artificially Accelerated UV Aging
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Effect of the Geometrical Shape of a Partition on the Natural Convection of Two Fluids in a Separated Cavity
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Effect of Mechanical and Herbicide Treatments on Weed Densities and Biomass in Two Potato Cultivars
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Effect of Sieve Unit Inclination Angle in a Rotary Cleaning Device for Barley Grain
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The effect of elevated temperature on the properties of cement mortars containing nanosilica and heavyweight aggregates
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Effect of sol composition on the properties of TiO2 powders obtained by the sol-gel method
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The effect of nanomaterials on thermal resistance of cement-based composites exposed to elevated temperature
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Effect of brookite on the photocatalytic properties of mixed-phase TiO2 obtained at a higher temperature
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Effect of added roach flesh on quality and shelf live of flour-and-fish snacks
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The effect of temperature during soybean oil hydrogenation on nickel catalyst poisoning by phospholipids.
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The effect of chlorinated drinking water consumption on levels of volatile organohalogen compounds in urine.
PublicationW przedstawionej pracy podjęto próbę oznaczenia niezmienionych form lotnych rozpuszczalników chlorowcoorganicznych w próbkach materiału biologicznego jakim jest mocz dawców, używających w gospodarstwie domowym a także w pracy wody uzdatnianej między innymi w procesie chlorowania. Do wykonania oznaczeń zastosowano zmodyfikowaną technikę analizy fazy nadpowierzchniowej nad cienką warstwą cieczy z samoczynną generacją ciekłego sorbentu...
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Effect of high pressure and sub-zero temperature on some gram-negative bacteria.
PublicationCelem pracy było określenie przeżywalności wybranych gramujemnych bakterii na działanie wysokiego ciśnienia i ujemnej temperatury. Traktowanie komórek bakterii ciśnieniem 193 MPa w temperaturze -20C przez 24 godziny, powodowało całkowitą inaktywację bakterii E. coli, P. fluorescens i T. thermophilus. Po działaniu ciśnienia przez krótszy czas występowały różnice we wrażliwości między badanymi szczepami. Najmniej odporny na działanie...
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Colorimetric study of the post-processing effect due to pulsed laser cleaning of paper.
PublicationW artykule przedstawiono wyniki badań procesu oczyszczania papieru implulsami laserowymi o różnej długości fali. Oceny dokonywano na podstawie pomierzonych wartości parametrów kolorymetrycznych. Badania obejmowały próbki papieru o różnym wieku.
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The Righi-Leduc effect: on evidence of two-band electronic structure in Nd1.86Ce0.14CuO4-y.
PublicationPrzedstawiono badania temperaturowe zależności oporu elektrycznego, efektu Halla (RH), przewodnictwa cieplnego (k) i współczynnika Righi-Leduc(SRL). Badania wykazały, że współczynnik RL> 0 w szerokim zakresie temperatur RH zmienia znak dwukrotnie w T=50 i 250K. Niezgodność znaków SRL i RH jednoznacznie wskazuje obecność w materiale nośników obu znaków tzn. n- i p- typu. W pracy pokazano, że transport ciepła zdominowany jest przez...
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The effect of plate size on the natural convective heat transfer intensity of horizontal surfaces
PublicationW pracy przedstawiono badania wpływu rozmiarów płyty prostokątnej poziomej na intensywność wymiany ciepła w warunkach konwekcji swobodnej. Zaproponowano dwa zakresy: dla płyt o wymiarze charakterystycznym mniejszym niż 0,1 m - 0,2 m intensywność konwekcyjnej wymiany ciepła jest odwrotnie proporcjonalna do szerokości płyty, dla płyt szerszych niż 0,2 m szerokość płyty nie wpływa znacząco na współczynnik konwekcyjnej wymiany ciepła....
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Temperature effect on the current-voltage characteristic fill factor for the silicon solar cells
PublicationW pracy przedstawiono badania wpływu temperatury pracy krzemowych ogniw fotowoltaicznych na wartość współczynnika wypełnienia charakterystyki prądowo- napięciowej (FF). Efekty dyfuzyjne w obszarze złącza oraz rekombinacja nośników ładunku ograniczają wartość współczynnika wypełnienia charakterystyki. Spadek tej wartości wynika głównie ze wzrostu wartości rezystancji szeregowej rs. Na rezystancję szeregową składają się: opór emitera...
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Effect of cyclodextrins on coupling of o-ethoxybenzenediazonium salt with pyrrole, imidazole and 2-methylimidazole
PublicationBadano wpływ B-cyklodekstryny na reakcje sprzęgania soli o-etoksybenzenodiazoniowych z pirolem, imidazolem i 2-metyloimidazolem. Porównano wydajności produktów sprzęgania wyizolowanych w poszczególnych reakcjach. W przypadku reakcji z pirolem i imidazolem prowadzonych z udziałem cyklodekstryny zaobserwowano spadek wydajności produktów sprzęgania, podczas gdy w reakcji z 2-metyloimidazolem obecność cyklodekstryny stymulowała powstawanie...
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Effect of admixtures on fresh grout and two-srtage (pre-placed aggregate) concrete
PublicationPrzedstawiono rezultaty badań doświadczalnych przeprowadzonych dla betonu uzyskanego metodą dwuetapową. Główną przeszkodą szerokiego zastosowania metody betonowania dwuetapowego Polcrete była niska wydajność urządzenia wytwarzającego mikrozaprawę - ultramiksera (UM). Celem przeprowadzonych badań laboratoryjnych było dobranie odpowiednich dodatków i domieszek, które umożliwią wytworzenie mikrozaprawy o takich samych parametrach...
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The effect of structural material on the properties of post-coagulation sludge for fish processing wastewater
PublicationPrzeprowadzono badania unieszkodliwiania osadów pokoagulacyjnych powstających w czasie oczyszczania ścieków z przetwórstwa rybnego. Osady pokoagulacyjne charakteryzują się wysokim stopniem uwodnienia oraz podatnością na zagniwanie. Do poprawy właściwości osadów wybrano metodę mieszania ich z materiałami strukturotwórczymi: kredą podwęglową, torfem, trocinami oraz bentonitem. W mieszaninach oznaczano zmiany zawartości suchej masy,...
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Comparison of Doppler Effect Estimation Methods for MFSK Transmission in Multipath Hydroacoustic Channel
PublicationUnderwater wireless communication remains a challenging topic, particularly for applications such as wreck penetration where multipath and Doppler effects are very intense. These effects are becoming even more difficult to mitigate for fast data transmission systems that utilize wideband signals. Due to the low propagation speed of acoustic wave in the water, there is a significant difference between the Doppler shift for lower...
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Effect of transregional transport of pollutants on atmospheric air quality in the Tricity area of Poland
PublicationDwuwymiarowa analiza wariancji wyników oznaczania jonów nieorganicznych, pH oraz przewodnictwa konduktometrycznego w próbkach wód opadowych zebranych w rejonie Trójmiasta pokazała, że transregionalny transport substancji zanieczyszczających środowisko ma wpływ na jakość powietrza w tym rejonie. W całym Trójmieście wahania stężeń analitów w wodach opadowych nie są spowodowane w znacznym stopniu przez lokalizacje miejsc pobierania...
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Application of Barkhausen effect in the impact assessment of welding to internal stress distribution in steel
PublicationThe paper presents identification method of internal stresses in plane steel elements in the chase of deliverance and welding assembly. The assessment was made by means of a non-destructive experimental method based on measurements incorporating local external magnetic field and the measurement of induced voltage, including Barkhausen noise. This method allows a degradation assessment due to internal and external actions, causing...
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Application of Barkhausen effect in the impact assessment of welding to internal stress distribution in steel
PublicationThe paper presents identification method of internal stresses in plane steel elements in the chase of deliverance and welding assembly. The assessment was made by means of a non-destructive experimental method based on measurements incorporating local external magnetic field and the measurement of induced voltage, including Barkhausen noise. This method allows a degradation assessment due to internal and external actions, causing...
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THE EFFECT OF WET UNDERWATER WELDING ON COLD CRACKING SUSCEPTIBILITY OF DUPLEX STAINLESS STEEL
PublicationABSTRACT The present work was conducted to assess the weldability of duplex stainless steel in underwater conditions. Metal manual arc welding (MMA) with the use of coated electrodes was used in the investigations. Tekken weldability tests were performed underwater at 0.5 m depth and in the air. Nondestructive tests, metallographic examinations of welds, ferrite content assessment in microstructure and hardness test were performed....
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Particle Shape Effect on Macroscopic Behaviour of Underground Structures: Numerical and Experimental Study
PublicationThe mechanical performance of underground flexible structures such as buried pipes or culverts made of plastics depend not only on the properties of the structure, but also the material surrounding it. Flexible drains can deflect by 30% with the joints staying tight, or even invert. Large deformations of the structure are difficult to model in the framework of Finite Element Method, but straightforward in Discrete Element Methods....
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Effect of sisal fiber filler on thermal properties of bio-based polyurethane composites
PublicationThis work is mainly focused on study of thermal and thermomechanical properties of obtained bio-based polyurethane (coded as bio-PU) composites via using different types of bio-components (bio-glycol, modified soybean oil and sisal fiber) in the procedure. The chemical structure, morphology and mechanical properties were also investigated and described in this manuscript in order to know more perfect characterization of produced...
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Motor Cable Effect on the Converter Fed AC Motor Common Mode Current
PublicationAnaliza zaburzeń elektromagnetycznych przewodzonych w przekształtnikowych układach napędowych wymaga uwzględniania pojemności pasożytniczych występujących w przekształtniku, uzwojeniach silnika oraz kablu zasilającym silnik. Dynamiczne zmiany napięć na uzwojeniach silników zasilanych z przekształtników częstotliwości PWM oraz związane bezpośrednio z nimi składowe wspólne prądów zaburzeń przewodzonych są istotnie związane z zjawiskami...
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Effect of Cr and Mn doping on ferroelectric and dielectric properties of Li1.72Na0.28Ge4O9 single crystals
PublicationLi1.72Na0.28Ge4O9 single crystals pure and slightly doped with chromium and manganese, obtained by Czochralski growth, were investigated for their ferroelectric and dielectric properties. The change in stoichometry of Li2− x Na x Ge4O9 (x = 0.28) crystals doped with Cr and Mn (0.1 mol.%) had an influence on the value of ferroelectric-to-paraelectric phase transition temperature, T c. The applied doping affects the T c value by...
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The Effect of Welding Conditions on Mechanical Properties of Superduplex Stainless Steel Welded Joints
PublicationThe tests results of superduplex stainless steel welded joints made with a different heat input, using automatic submerged arc welding (SAW) and semi-automatic flux-cored arc welding (FCAW) have been presented. Metallographic examinations, the measurements of the ferrite content, the width of the heat affected zone (HAZ) and the hardness of the welds in characteristic areas have been performed. Significant differences in the amount of...
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OBSERVATION OF THE THERMOSIPHON EFFECT IN THE CIRCULATION OF ACETONE AS WORKING FLUID IN MODERN COOLING SYSTEM
Publicationplants or computer server rooms has led to the demand for new and reliable methods for electronic cooling. Because of bigger and bigger power levels and miniaturization of the electronic devices, lack of free space in such a high heat flux. The increasing integration of electronic logy that supposed to be designed for high thermal performance, low mass, and able to work in harsh environments. In this paper presented a prototype...
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The effect of groyne field on trapping macroplastic. Preliminary results from laboratory experiments
PublicationMacroplastic, a precursor of microplastic pollution, has become a new scope of research interest. However, the physical processes of macroplastic transport and deposition in rivers are poorly understood, which makes the decisions of where to locate macroplastic trapping infrastructure difficult. In this research, we conducted a series of experiments in a laboratory channel, exploring the impact of groynes and flexible artificial...
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Research on the effect of low-sulphur marine fuels on the dynamic characteristics of a CI engine
PublicationThe implementation of low-sulphur, so-called modified marine fuels into operation requires prior labora- tory engine tests to assess the energy, emission and structural effects of their usage. This type of research are carried out on the test bed of a diesel engine as a small-scale physical model that reproduces the adequate design and process (parametric) features of a full-size marine engine. Their key stage is to determine the energy...
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Effect of Arc Strikes on High Strength Low Alloy Steels Welded by SMAW
PublicationWet welding with covered electrodes (Shielded Metal Arc Welding – SMAW) is the most commonly used method of carrying out welding repair works in a water environment. Limited visibility and the inability to move freely under water result in an increased risk of formation of welding imperfections such as lack of fusion, lack of penetration and arc strikes. The work focused on changes in the properties and structure of steel subjected...
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Effect of Ethanol Extracts of Propolis (EEPs) against Staphylococcal Biofilm—Microscopic Studies
PublicationStaphylococci growing in the form of biofilm exhibit high resistance to a plethora of antibiotics. The aim of the study was to assess the influence of ethanolic extract of propolis (EEPs) on S. epidermidis ATCC 35984 biofilm using fluorescent microscopy. Propidium iodide (PI) and SYTO 9 were used for differentiation of live and dead cells, and calcofluor white was used to stain the extracellular matrix, the self-produced extracellular...
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Thermal buckling of functionally graded piezomagnetic micro- and nanobeams presenting the flexomagnetic effect
PublicationGalerkin weighted residual method (GWRM) is applied and implemented to address the axial stability and bifurcation point of a functionally graded piezomagnetic structure containing flexomagneticity in a thermal environment. The continuum specimen involves an exponential mass distributed in a heterogeneous media with a constant square cross section. The physical neutral plane is investigated to postulate functionally graded material...
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The interaction of the pulsed laser irradiation with titania nanotubes - Theoretical studies on the thermal effect
PublicationThis paper reports temperature dispersion simulations of titania nanotubes irradiated by the 355 nm, pulsed, nanosecond laser. The modelling with the use of Finite Elements Method concerns titania nanotubes of the length and the wall thickness in the range of 0.5–2 μm and 5–20 nm, respectively. The uniqueness of the morphology was preserved by ensuring the wall thickness variation along the height of the tube, which was determined...