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Wyniki wyszukiwania dla: sciernice elektrokorundowe
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Hybrid carbon-TiO2 spheres: Investigation of structure, morphology and spectroscopic studies
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Characterization of carbon deposit with controlled carburization degree
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Insight into the influence of polymer topological structure on the exfoliation of clay in polystyrene matrix via annealing process
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Effect of graphene thickness on photocatalytic activity of TiO2-graphene nanocomposites
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Synthesis and characterization of iron-filled multi-walled nanotubes
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Aquaporins: New markers for male (in)fertility in livestock and poultry?
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Thermal and Electrical Characterization of the Carbon Nanofibers Based Cement Composites
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Oxidized SWCNT and MWCNT as co-catalysts of polymeric carbon nitride for photocatalytic hydrogen evolution
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Graphitic carbon nitride/graphene oxide/reduced graphene oxide nanocomposites for photoluminescence and photocatalysis
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Systematic study on synthesis and purification of double-walled carbon nanotubes synthesized via CVD
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Psychometric Properties of the Polish Version of the FACIT-Sp-12: Assessing Spiritual Well-Being Among Patients with Chronic Diseases
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The Effect of WC/C Coating on the Wear of Bevel Gears Used in Coal Mines
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Expression of pendrin and NIS iodide transporters in human breast tumor and peri-tumoral tissue
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Surface quality and topographic inspection of variable compliance part after precise turning
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Effect of Cobalt Addition on the Activity of Nanocrystalline Iron Catalysts in the Cracking of Methane Reaction
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Fouling in direct contact membrane distillation process
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ChatGPT - opportunities or threats in the educational process
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Equilibrium of Trichloroethylene Adsorption from Aqueous Solution onto Activated Carbons
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Membrane distillation of NaCl solution containing natural organic matter
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Kinetics of the Adsorption of Copper and Lead Ions from Aqueous Solution on to WD-ekstra Activated Carbon
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Adsorption of 1,2-Dichloropropane from Aqueous Solution onto Activated Carbon
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Industrially applicable methods of poly(methyl methacrylate)/organophilic montmorillonite nanocomposites preparation: Processes and cast materials characterization
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Mass transfer of HCl and H2O across the hydrophobic membrane during membrane distillation
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The study of membrane distillation used for separation of fermenting glycerol solutions
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Adsorption of Hydrocarbon Chloro-Derivatives onto DTO Commercial Activated Carbon from Multi-Component Aqueous Solutions
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Water Purification by Membrane Distillation Process
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Surface characteristics of KOH-treated commercial carbons applied for CO2 adsorption
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Osmotic MD and other membrane distillation variants
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Mechanical and thermal analysis of injection molded poly(methyl methacrylate) modified with 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) fire retarder
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Building a cybersecurity culture of public administration system in Poland
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Long-term performance of membrane distillation process
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The Effects of Host Plant Genotype and Environmental Conditions on Fungal Community Composition and Phosphorus Solubilization in Willow Short Rotation Coppice
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Heat transport in the membrane distillation process
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Adsorption of CCl4 from Aqueous Solution on Activated Carbons
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Study of NaCl permeability through a non-porous polypropylene film
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CONCENTRATION OF NaCl SOLUTION BY MEMBRANE DISTILLATION INTEGRATED WITH CRYSTALLIZATION
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Surface modification of polypropylene membrane by helium plasma treatment for membrane distillation
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Antimicrobial resistance of fecal indicators in disinfected wastewater
PublikacjaThe main objective of the study was to assess the potential of three systems (UV irradiation, ozonation, and micro/ultrafiltration) operated in a pilot scale in removal of antimicrobial-resistant fecal bacteria from secondary effluent of the local wastewater treatment plant (700,000 population equivalent). The effectiveness of the processes was analysed using the removal ratio of fecal indicators (Escherichia coli and Enterococcus...
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On the tendency of temperature and electric field dependences of interface recombination in P3HT:PCBM organic bulk heterojunction solar cells
PublikacjaWe demonstrate theoretical explanation of the temperature and electric field dependences of recombination coefficients in an organic P3HT:PCBM bulk heterojunction solar cell. Based onthe model of interface recombination, two analytical formulas describing the relative ratio of the interface (γI ) to the Langevin (γL) recombination coefficients have been derived. Our analysis indicates that the sign of parameters φT and φF determines...
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The photocurrent quantum efficiency dependence on the applied voltage in organic solar cells
PublikacjaWe demonstrate that our recently reported model (Szmytkowski 2007 J. Phys. D: Appl. Phys. 40 3352) of the photocurrent quantum efficiency in organic semiconductors explains the external quantum efficiency dependence on the electric field in organic solar cells. This effect can be explained by taking into account that the photogeneration of charge carriers occurs via the electron-hole pair dissociation and the space charge effects...
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Mechanical, structural and diffusion studies of hydrogel polyurethane nanocomposites containing modified montmorillonite
PublikacjaW pracy zaprezentowano wyniki badań hydrożeli poliuretanowych zawierających poli(tlenek etylenu) oraz montmorylonit. Otrzymane układy scharakteryzowano z użyciem technik XRD, DMA, badań mechanicznych oraz wyznaczono chłonność wody i parametry dyfuzji.
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Corrosion resistance examinations of Ti6Al4V alloy with the use of potentiodynamic method in Ringer`s and artificial saliva solutions
PublikacjaThe research results of corrosion resistance of the Ti6Al4V alloy in the simulated body fluids (SBF) are presented. The polished specimens have shown better corrosion resistance than grinded surfaces in both liquids. The artificial saliva has revealed more aggressive test solution than Ringer`s solution. The pitting tendency has been observed in Ringer`s solution for grinded specimens.
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Calix[4]arenes appended with thioamide moieties as powerful tool for heavy metals recognition
PublikacjaSelectivity of new thioamide derivatives was assessed using those ligands as sensor materials in ion-selective membrane electrodes and tested towards Pb2+ - selectivity. The influence of the nature of the thioamide function (linear, branched or cyclic substituents) on their ionophoric properties was investigated. Electrodes based on cyclic thioamide moieties are promising analytical tools for monitoring Pb2+ concentration in natural...
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Modeling by finite element methods of impact of erosion on frequency of normal modes of L-0 blade
PublikacjaAfter some time of exploitation steam turbine rotors blades in energetic industry they are being eroded and also their frequency of normal modes is changed. Those changes can cause to unwanted shift of blades normal mode frequencies. It is necessary to find quick method of rating changes of frequency in connection of mass loss due erosion. The evaluation of this dependence was made by finite element modeling method using HyperWorks...
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Smaller representation of finite state automata
PublikacjaThis paper is a follow-up to Jan Daciuk's experiments on space-efficient finite state automata representation that can be used directly for traversals in main memory (Daciuk, 2000)[4]. We investigate several techniques for reducing memory footprint of minimal automata, mainly exploiting the fact that transition labels and transition pointer offset values are not evenly distributed and so are suitable for compression. We achieve...
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Seasonal changes in organotin compounds in water and sediment samples from the semi-closed Port of Gdynia
PublikacjaThe effect of seasonal changes on the distribution of organotin compounds (OTC) in the sediments and seawaterfrom the docks of the Port of Gdynia was investigated. Sediment and seawater samples were collectedfrom four industrial docks in February (winter) and June (summer) in 2009. The samples were analyzed forbutyltin, phenyltin, octyltin, and tricyclohexyltin (total of 9 OTC derivatives). The fine fraction (b0.063 mm)accumulated...
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Distillery Wastes as External Carbon Sources for Denitrification in Municipal Wastewater Treatment Plants
PublikacjaW pracy przedstawiono wyniki badań nad zastosowaniem półproduktów oraz produktów odpadowych z gorzelni i destylarni, jako potencjalne źródło zewnętrznego węgla organicznego w celu poprawy denitryfikacji w systemach z biologicznym usuwaniem związków biogennych. W celu porównania efektywności trzech badanych substancji (oleje fuzlowe, odcieki i syrop) wykonano testy na szybkość redukcji azotanów (z ang. NUR) oraz szybkość zużycia...
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Approximate search strategies for weighted trees
PublikacjaW pracy podajemy 3-przybliżony algorytm dla problemu spójnego przeszukiwania drzew ważonych.
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Bioactive core material for porous load-bearing implants
PublikacjaSo far state of knowledge on biodegradable materials is reviewed. Among a variety of investigated materials, those composed of polymers and ceramics may be considered as only candidates for a core material in porous titanium alloy. The collagen and chitosan among natural polymers, polyhydroxy acids among synthetic polymers, and hydroxyapatite and tricalcium phosphate among ceramics are proposed for further research. Three essential...
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On the durability of the hydraulic satellite motor working mechanism in overload condition
PublikacjaThe paper presents the newest construction of the hydraulic satellite pump/motor. In this study, the fracture of the hydraulic satellite motor working mechanism is investigated. Factors influencing the durability of satellite working mechanism have been described. The durability of the hydraulic satellite motor working mechanism at a load, corresponding to a pressure of 15 MPa supplied with refined rapeseed oil is very low. Analyses...