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Search results for: URFACE ELASTICITY
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Experimental study of heat transfer intensification in surface cooling using microjets
PublicationW pracy przedstawiono badania eksperymentalne intensyfikacji wymiany ciepła podczas chłodzenia powierzchni mikrostrugami. Wyniki badań porównano z własnym modelem teoretycznym zjawiska.
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Daily Radiation Budget of the Baltic Sea Surface from Satellite Data
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Surface roughness of ceramic parts after lapping by abrasive-metallic tools
PublicationPrzedstawiono konstrukcję narzędzi ścierno-metalowych do obróbki na docierarce jednotarczowej. Wykonano badania docierania elementów z ceramiki tlenowej. Analizowano podstawowe parametry chropowatości powierzchni elementów z Al2O3 po obróbce narzędziami na bazie węglika boru.
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Normalized Method for Land Surface Temperature Monitoring on Coastal Reclaimed Areas
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Errors of Surface Topography Parameter Calculation in Grinded or Turned Details Analysis
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Roughness Evaluation of Burnished Topography with a Precise Definition of the S-L Surface
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Resolving Selected Problems in Surface Topography Analysis by Application of the Autocorrelation Function
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Reduction of Influence of the High-Frequency Noise on the Results of Surface Topography Measurements
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The effect of valley depth on areal form removal in surface topography measurements
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Surface and thermal properties of collagen/hyaluronic acid blends containing chitosan
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Wettability of plasma modified glass surface with bioglass layer in polysaccharide solution
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The wetting and interfacial properties of alumina surface treated with dipalmitoylphosphatidylcholine and lipase enzyme
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The use of response surface methodology for reliability estimation of composite engineering structures
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Laser Surface Alloying of Aluminium Alloys with Cu/Fe Metallic Powders
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The influence of laser alloying on the structure and mechanical properties of AlMg5Si2Mn surface layers
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Laser Surface Treatment of Sintered Stainless Steels for Wear Resistance Enhancement
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Towards a Framework of Operational-Risk Assessment for a Maritime Autonomous Surface Ship
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Metrological analysis of surface quality aspects in minimum quantity cooling lubrication
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Surface roughness analysis of hardened steel after high‐speed milling
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Parametric and nonparametric description of the surface topography in the dry and MQCL cutting conditions
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The application of response surface method to optimization of precision ball end milling
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Response Surface Methodology Application for Bacteriophage–Antibiotic Antibiofilm Activity Optimization
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Photodegradation of Benzo-[a]-pyrene on the Surface of the Photocatalytic Paints and Analysis of the Degradation Products
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Surface-enhanced Raman scattering of water in aqueous dispersions of silver nanoparticles
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Effects of electric field on a copper–dioxolene complex adsorbed on a gold surface
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A GIS based approach for the mitigation of surface runoff to a shallow lowland reservoir
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Perspective of High Energy Heating Implementation for Steel Surface Saturation with Carbon
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Microstructure and wear of cast aluminium alloy with laser modified surface layer
Publicationprzedstawiono wyniki badań zużycia przez tarcie przetopionego laserowo stopuAlSi13MgCuNi w warunkach tribologicznych. Wykazano, iż zużycie i współczyn-nik tarcia są zależne od parametrów obróbki laserowej w warunkach kriogeni-cznych.
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Directional surface plasmon-coupled emission - application for an immunoassay in whole blood
PublicationZaprezentowano badania fluorescencji znakowanej barwnikiem immunoglobuliny G, na powierzchni srebra.
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Tribological and corrosion testing of surface engineered surgical grade CoCrMo alloy
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Turning process monitoring of internal combustion engine piston’s cylindrical surface
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Machined Surface Roughness Including Cutter Displacements in Milling of Hardened Teel
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Surface characteristics of KOH-treated commercial carbons applied for CO2 adsorption
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Surface modification of polypropylene membrane by helium plasma treatment for membrane distillation
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Influence of polypropylene membrane surface porosity on the performance of membrane distillation process
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Composite and Surface Functionalization of Ultrafine-Grained Ti23Zr25Nb Alloy for Medical Applications
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Measurements of surface roughness of heads of human hip joints in lubrication aspects
PublicationW niniejszej pracy przedstawiono wyniki pomiarów chropowatości chrząstki stawowej na powierzchniach głów kostnych stawu biodrowego człowieka. Pomiarów dokonano przy pomocy czujników mechanicznych i laserowych. Praca zawiera wyniki analizy statystycznej.
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Surface structure and propoerties of Ti6Al4V alloy laser melted at cryogenic conditions
PublicationPrzedstwiono wyniki badań mikroskopowych i mikrotwardości warstwy wierzchniej poddanej przetapianiu laserem w ciekłym aocie przy mocy laserz 3000-6000 W. Stwierdzono wzrost twardości i utworzenie zróżnicowanej warstwy wierzchniej.
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The effect of thermal modification on the quality of the milled surface of beech and pine wood
PublicationThe article deals with the effect of thermal modification on the quality of the created surface during milling on CNC milling cutters. The quality of the created surface is evaluated based on surface roughness, specifically its roughness parameter Ra. The observed surface is created by a shank cutter with a diameter of 20 mm and three cutting edges in a spiral at a standard speed of 18,000. min-1. The article compares thermally...
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An improvement of body surface area formulas using the 3D scanning technique
PublicationObjectives: Body surface area (BSA) is one of the major parameters used in several medical fields. However, there are concerns raised about its usefulness, mostly due to the ambiguity of its estimation. Material and Methods: Authors have conducted a voluntary study to investigate BSA distribution and estimation in a group of 179 adult people of various sex, age, and physique. Here, there is provided an extended analysis of the...
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The Effect of Steaming Beech, Birch and Maple Woods on Qualitative Indicators of the Surface
PublicationThis work presents the effect of steaming beech, birch and maple woods on the resulting quality of the milled wood surface. The steaming process of the studied woods results in a targeted change in the color of the wood, which changes from the original light white-gray color to fine reddishbrown to dark brown color shades that are more or less saturated depending on the temperature of the saturated water steam. The color changes...
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Assessment of Subsoil Subsidence Under the Railway Surface with the Use of Fuzzy Sets
PublicationThe cause of the subsidence of the railway track is the subsidence of the track bed itself and it is often related to the subsidence of the subsoil. Such settlement leads to: uneven longitudinal railways and track twist. These phenomena have a negative impact on the comfort and safety of driving, and in extreme cases lead to a train derailment. It has been shown that the magnitude of these settlements is determined by many parameters...
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Representativity of ISO test track surface based on controlled pass-by measurements
PublicationWithin the Polish-Norwegian research project ELANORE, a limited Round Robin Test has been performed on four ISO tracks in Northern Europe. The basic objective of the project is to improve the EU directive on labelling of tyres for noise and rolling resistance. This directive is based on the measurement procedures proscribed in the UNECE Reg.117. Measurements on 3 ISO tracks were performed in 2021 and presented at InterNoise 2022....
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Effect of surface roughness on thermal-hydraulic characteristics of plate heat exchanger
PublicationIn the paper the experimental analysis of passive heat transfer intensification in the case of modeled plate heat exchanger is conducted. The plate heat exchanger is chosen for the analysis because this kind of heat exchangers could be prospectively applied in the ORC systems, however other areas or application are equally possible. The experimental setup was assembled at the Department of Energy and Industrial Apparatus of Gdansk...
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Dynamic Nanoimpedance Characterization of the Atomic Force Microscope Tip-Surface Contact
PublicationNanoimpedance measurements, using the dynamic impedance spectroscopy technique, were carried out during loading and unloading force of a probe on three kinds of materials of different resistivity. These materials were: gold, boron-doped diamond, and AISI 304 stainless steel. Changes of impedance spectra versus applied force were registered and differences in the tip-to-sample contact character on each material were revealed. To...
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Application of multisine nanoscale impedance microscopy to heterogeneous alloy surface investigations
PublicationIn the recent years atomic force microscopy is recognized as valuable tool for investigation of surficial features of construction materials. It concerns, among other things, studies of changes caused by such phenomena as galvanic corrosion, passivation associated with the growth of oxide layers, or sensitization of austenitic steels with the formation of carbide phases. In addition, atomic forcemicroscopy allows easy coupling...
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Multiobjective Aerodynamic Optimization by Variable-Fidelity Models and Response Surface Surrogates
PublicationA computationally efficient procedure for multiobjective design optimization with variable-fidelity models and response surface surrogates is presented. The proposed approach uses the multiobjective evolutionary algorithm that works with a fast surrogate model, obtained with kriging interpolation of the low-fidelity model data enhanced by space-mapping correction exploiting a few high-fidelity training points. The initial Pareto...
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Experimental comparison of hydrodynamic thrust bearings with different pad surface materials
PublicationBabbitt is the material most frequently used as the pad surface material for hydrodynamic bearings operating at usual operating conditions. It shows many advantages important for safe bearing operation, as for example: low friction coefficient, corrosion resistance, fair mechanical properties and outstanding conformability. On the other hand, it is not free from disadvantages, such as limited fatigue strength or limited resistance...
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Impact of surface skin temperature change on blood flow characteristics in palm
PublicationHeating a human palm during 3 minutes period causes changes in superficial skin temperature and leads to thermoregulation system response. The response time and level of flow characteristics change depend on the subject hand size and health of his vascular tree. A solution of Pennes bioheat propagation model was analyzed in order to see how much heat has to be transferred into the tissue to extort the observable reaction. The reflective...
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The use of Response Surface Methodology for reliability estimation of composite engineering structures
PublicationStability loss is one of the key issues in the analysis of shells made of composite materials. This paper aims at finding the variation of the critical or limit value of the load resulting from geometric imperfections. An axially compressed 16-layer cylindrical panel model is considered. The imperfections of the panel are simulated as random fields. The parameters of these fields are used as the basic variables of the reliability...