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Search results for: MCREYNOLD'S CONSTANT
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Rec.: Robert Bielecki. Finnish Case Grammar (From the Syntactic and Semantic Perspectives). Poznań: Wydawnictwo Naukowe Uniwersytetu im. Adama Mickiewicza, 2015, 290 s.
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The History of the Theory of Structures [Historia teorii konstrukcji] / K.-E. Kurrer. - Berlin : Ernst & Sohn, 2008.- 848 s. :501 rys. - Bibliogr. 1158 poz.
PublicationOmówiono angielskojęzyczne dzieło nt. historii teorii konstrukcji jako duże rozszerzenie wcześniejszej jego wersji niemieckojęzycznej. W opinii recenzenta w dziele tym zebrano i uporządkowano obszerny materiał przedmiotu, w dużej mierze - unikatowy.
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Spółki osobowe. W: Prawo przedsiębiorcy. Pod red. E. Grzegorzewska-Mischka.Gdańsk: Scientyfic Publishing Group **2003 s. 29-48 bibliogr. 10 poz. .
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New examples of N^(+)-H···^(-)S hydrogen bonds: Synthesis and X-ray study of selected secondary ammonium tri-tert-butoxysilanethiolates
PublicationTri-tert-butoksysilanotiol reagując z aminami drugorzędowymi: Et2NH, morfoliną, dicykloheksyloaminą i 2,2,4,4-tetrametylopiperydyną daje odpowiednie sole amoniowe. Jak wykazują rentgenowskie badania strukturalne wszystkie te związki tworzą w ciele stałym jednostki dimeryczne {RS(-), R'NH2(+)}2, powiązane wiązaniami wodorowymi typu: N(+)-H···(-)S.
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Graphitic carbon nitride nanosheets decorated with HAp@Bi2S3 core–shell nanorods: Dual S-scheme 1D/2D heterojunction for environmental and hydrogen production solutions
PublicationBy combining different semiconductors, scientists have developed innovative materials capable of converting solar energy into useful forms of energy or driving chemical reactions that clean up pollutants. These materials offer a promising path to combat global environmental and energy challenges. In this study, HAp@Bi2S3 core–shell structures were synthesized using a facile microemulsion technique, and then loaded onto graphitic...
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Nowe makrocykliczne chromojonofory, synteza i charakterystyka oddziaływań z kationami.**2002, 104 s. 77 rys. 13 tab. bibliogr. 129 poz. maszyn.
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Ekspertyza konstrukcji i stanu technicznego napędu rollera rejowego, napędu rollera sztagowego oraz wózka fałowego na sztag s/y "Running on Waves"
PublicationCelem ekspertyzy było ustalenie przyczyn nieprawidłowej pracy urządzeń rejowych i wciągarek. Omówiono błędy projektowe i wykonawcze oraz wskazano przyczyny awarii. Sformułowano wnioski dotyczące kierunków modernizacji konstrukcji.
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Determination of changes in viscosity of pectin gel depending on shear rate (1.1 to 55 s-1).
Open Research DataThe rheological characteristic of pectin gel (with concetration 0,45% m/m, in three independent repetition of sample) was made on the basis of a viscosity measurement using a Brookfield viscometer, using LV SC4 - 25 spindle and shear rates from 1.1 to 55 s-1.The data allowed to characterize the used hydrogel preparations and assess their functional...
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The changes of outlet gases concentrations from SOFC with Ce(Pr,Sm)O2-s layers
Open Research DataThe dataset includes The changes of outlet gases concentrations from SOFC with Ce(Pr,Sm)O2-s layers. Samples were produced using aqueous soft chemistry methods (microemulsion method) and applied in form of a layer onto the anode of the commercial SOFC. The SOFC was working under biogas feeding.
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DLC coating doped with W in ring-on-ring sliding with water lubrication 20MPa/0.1m/s
Open Research DataWear tests in sliding friction of 1% W (tungsten) doped DLC coating on 1.4021 (EN 10088-1) heat treated stainless steel. Ring - on - ring contact in unidirectional sliding, DLC-W over DLC-W. Mean contact stress: 20MPa. Sliding velocity: 0,1 m/s. Mean friction radius: 9.5mm. Lubricant: WATER. Tribometer: PT-3. Overall test time >15h. The test was...
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DLC coating doped with W in ring-on-ring sliding with water lubrication 10MPa/0.1m/s
Open Research DataWear tests in sliding friction of 1% W (tungsten) doped DLC coating on 1.4021 (EN 10088-1) heat treated stainless steel. Ring - on - ring contact in unidirectional sliding, DLC-W over DLC-W. Mean contact stress: 10MPa. Sliding velocity: 0,1 m/s. Mean friction radius: 9.5mm. Lubricant: WATER. Tribometer: PT-3. Overall test time >15h. The test was...
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Determination of changes in viscosity of pectin gel depending on shear rate (1.7 to 85 s-1).
Open Research DataThe rheological characteristic of pectin gel (with concetration 0,25% m/m, in two independent repetitions) wasmade on the basis of a viscosity measurement using a Brookfield viscometer, using LV SC4 - 27 spindle and shear rates from 1.7 to 85 s-1, in temperature of 25 C degee .The data allowed to characterize the used hydrogel preparations and assess...
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The effect of raw material type on endotoxin content .
Open Research DataThe datasets contain the results of determining the effect of raw material type on endotoxin content as well as the effect of purification methods. The endotoxin concentration was determined using the PyroGene Recombinant Factor C Endpoint Fluorescent Assay. Beckmann-Kenko sodium alginate and Chemat sodium salt of alginic acid were used for the assays....
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TG analyses - content of SiO2 and TiO2 in polystyrene
Open Research DataTG analyses were performed for polystyrene spheres coating by SiO2 and then coating by SiO2-TiO2. Thermal analyses of polystyrene spheres only were also performed. The content of inorganic remaining was used for calculation the quantity of coating SiO2 and TiO2 in the polystyrene spheres.
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Amplitude-distance spectroscopy in semi-contact mode
Open Research DataSince it was invented by Binnig et al. in 1986, atomic force microscopy (AFM) plays a key role in science and technology at the nanoscale. AFM is a microscopic technique that visualizes the surface topography using the attractive and repulsive forces of interaction between several atoms (in theory) of a blade attached to the end of the probe lever and...
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Fingerprint structure studies with semi-contact AFM
Open Research DataThe work [1] presents many, sometimes even surprising examples of the use of atomic force microscopy in modern forensics. Some of them are projectile tests using the characteristic scratch patterns created by the firing pin on the primer. There are more and more suggestions in the literature for the use of atomic force microscopy in dactyloscopy [2]....
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Javed Ather Siddiqui DR.
PeopleI AM PSYCHATRIST,WANTS TO BRING SMILE ON THE FACES OF MENTALLY ILL PATIENTS. I LOVE MY PROFESSION AND WANT TO FACE CHALLENGES FOR SAKE OF THE PATIENTS. I EARNED POST GRADUATE DEGREE FROM MUMBAI UNIVERSITY AT G S SRTH MEDICAL COLLEGE AND KEM HOSPITAL, MUMBAI, INDIA. I HAVE OVER 20 YEARS OF MENTAL HEALTH EXPERIENCE. I HAVE WORKED IN VARIETY OF CLINICAL SETTINGS THAT HAVE INCLUDED DRUG DEADDICTION, CHILD, ADOLESCENT, GERIATRIC AND...
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Estimation of a smoothness parameter by spline wavelets
PublicationWe consider the smoothness parameter s*(f) of a function f∈L2(R) in terms of Besov spaces. The existing results on estimation of smoothness [K. Dziedziul, M. Kucharska and B. Wolnik, J. Nonparametric Statist. 23 (2011)] employ the Haar basis and are limited to the case 0
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Determination of metal content in sewage sludge and sewage sludge ash to find opportunities to use them in the construction industry
PublicationSewage sludge management is becoming an increasing problem in developed and developing countries. Due to their physicochemical properties (mainly high content of heavy metals) a safe method of utilization is sought. Considering environmental protection, energy recycling, reduction in use of the raw materials and the possibility of immobilization hazardous substances, the use of ashes in building materials becomes a very good way...
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The Mineral Character and Geomechanical Properties of the Transitional Rocks from the Mesozoic-Neogene Contact Zone in the Bełchatów Lignite Deposit
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Striking Influence about HZSM-5 Content and Nickel Catalyst on Catalytic Carbonization of Polypropylene and Polyethylene into Carbon Nanomaterials
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Cu-Content La1−XSrxNi1−YCuyO3−Δ Perovskites As Cobalt-Free Cathode Materials for High-Performance It-SOFCs
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The Impact of Fuel Ethanol Content on Particulate Emissions from Light-Duty Vehicles Featuring Spark Ignition Engines
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PEDOT(PSS) as Solid Contact for Ion-Selective Electrodes: The Influence of the PEDOT(PSS) Film Thickness on the Equilibration Times
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Carotenoid Content in Breastmilk in the 3rd and 6th Month of Lactation and Its Associations with Maternal Dietary Intake and Anthropometric Characteristics
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Study on metrological relations between instant tool displacements and surface roughness during precise ball end milling
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Air-drying temperature changes the content of the phenolic acids and flavonols in white mulberry (Morus alba L.) leaves
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The effect of light conditions on the content of selected active ingredients in anatomical parts of the oyster mushroom (Pleurotus ostreatus L.)
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New Simple and Robust Method for Determination of Polarity of Deep Eutectic Solvents (DESs) by Means of Contact Angle Measurement
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Influence of mobilized RAP content on the effective binder quality and performance of 100% hot in-place recycled asphalt mixtures
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Effect of Water Content in Ethylene Glycol Solvent on the Size of ZnO Nanoparticles Prepared Using Microwave Solvothermal Synthesis
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Impact of Cluster Zone Leaf Removal on Grapes cv. Regent Polyphenol Content by the UPLC-PDA/MS Method
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The Studies on α-Pinene Oxidation over the TS-1. The Influence of the Temperature, Reaction Time, Titanium and Catalyst Content
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Cadmium and lead content in gluten and gluten-free bread available on the Polish market – potential health risk to consumers
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Phenolic Acid Content and Antioxidant Properties of Edible Potato (Solanum tuberosum L.) with Various Tuber Flesh Colours
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An inverse algorithm for contact heat conduction problems with an interfacial heat source based on a first-order thermocouple model
PublicationInverse problems of contact heat conduction with an interfacial heat source are common in various fields of science, engineering and technology. In this study, an algorithm for their solution is developed based on an inverse parametric optimisation method with an impulse response function describing the heat partition and contact heat transfer. A first-order thermocouple model with a time constant parameter is embedded in the impulse...
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Determination of EC50 toxicity data of selected heavy metals toward heterocypris incongruens and their comparison to "direct-contact" and microbiotests
PublicationW artykule omówiono czułość organizmu Heterocypris incongruens wobec metali ciężkich. Pomimo iż test Ostracodtoxkit F jest dostępny hadlowo na rynku od wielu lat to brak jest danych na temat czułości i selektywności tego organizmu, a dane na ten temat są niezbędne podczas interpretowania wyników oznaczeń toksyczności chronicznej próbek gleb i osadów. Wyniki LC50 oraz EC50 zostały też porównane z danymi innych handlowo dostępnych...
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Wykonanie i zastosowanie układów złożonych z miniaturowych (solid-contact) elektrod jonoselektywnych do badań biomedycznych
PublicationW rozprawie doktorskiej przedstawiono konstrukcję i parametry miniaturowych elektrod jonoselektywnych (EJS) użytych do budowy zintegrowanych platform czujnikowych, które mogą mieć potencjalne zastosowanie w badaniach biomedycznych i klinicznych. Wykazano wpływ lepkości roztworu na zakres liniowy pracy EJS oraz wpływ temperatury przechowywania próbek śliny na ich skład jonowy. Praca badawcza obejmowała zaprojektowanie, wykonanie...
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Advancing sustainable hybrid bitumen systems: A compatibilization solution by functionalized polyolefins for enhanced crumb rubber content in bitumen
PublicationPolymer waste pollution has a profound effect on the environment and, consequently, on the lifestyle of hu- mankind. The massive production and disposal of cross-linked polymers clearly exemplify the challenges of recycling. Increasing efforts are being undertaken to introduce recycled polymers, especially crumb rubber (CR), into asphalt formulations. Due to the rather poor processability and phase separation associated with CR- modified...
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New Simple and Robust Method for Determination of Polarity of Deep Eutectic Solvents (DESs) by Means of Contact Angle Measurement
PublicationThe paper presents a new method for evaluating the polarity and hydrophobicity of deep eutectic solvents (DESs) based on the measurement of the DES contact angle on glass. DESs consisting of benzoic acid derivatives and quaternary ammonium chlorides–tetrabutylammonium chloride (TBAC) and benzyldimethylhexadecylammonium chloride (16-BAC)—in selected molar ratios were chosen for the study. To investigate the DESs polarity, an optical...
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Direct-contact condensation from vapour- gas mixture in a spray ejector condenser for negative CO2 power plant
PublicationDirect-contact condensation of vapour containing the inert gas on a spray of subcooled liquid exists in a number of technical applications. For example, it may be found in the nuclear industry (e.g. pressurized jet under normal operating conditions, in safety analyses) or in the chemical industry (e.g. mixing-type heat exchanger, degasser, sea water desalting). The problem is also essential to modelling and analysis of some...
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Quality Control of Bacterial Extracellular Vesicles with Total Protein Content Assay, Nanoparticles Tracking Analysis, and Capillary Electrophoresis
PublicationExtracellular vesicles (EVs) were isolated from Pectobacterium zantedeschiae culturing media using direct ultracentrifugation (UC), iodixanol cushion ultracentrifugation (ICUC), and iodixanol density gradient ultracentrifugation (IDGUC) techniques. The isolates were characterized with total protein content assay (bicinchoninic acid assay, BCA), nanoparticles tracking analysis (NTA), and capillary electrophoresis (CE). A satisfactory...
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Comparative 3D DEM simulations of sand–structure interfaces with similarly shaped clumps versus spheres with contact moments.
PublicationThree-dimensional simulations of a monotonic quasi-static interface behaviour between initially dense cohesionless sand and a rigid wall of different roughness during tests in a parallelly guided direct shear test under constant normal stress are presented. Numerical modelling was carried out by the discrete element method (DEM) using clumps in the form of convex non-symmetric irregularly shaped grains. The clumps had an aspect...
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Contact force network evolution in active earth pressure state of granular materials: photo‑elastic tests and DEM
PublicationArtykuł omawia ewolucję sieci sił kontaktowych w materiałach granulowanych podczas quasi-statycznego stanu aktywnego. Doświadczenia foto sprężyste zostały wykonane dla kulek szklanych. Doświadczenia zostały symulowane stosując metodę elementów dyskretnych (DEM). Model DEM prawidłowo przewidział strukturę sił kontaktowych i ich wielkość, lokalizację odkształceń oraz obszary zmian fazowych.
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Andrzej Okuniewski dr inż.
PeopleEducation 2010-2014: Department of Inorganic Chemistry, Faculty of Chemistry, Gdańsk University of TechnologyPhD in chemical sciences (chemical sciences - chemistry, inorganic chemistry) 2009-2010: Faculty of Chemistry, Gdańsk University of TechnologyMaster of Chemistry (applied chemistry) 2005-2009: Faculty of Chemistry, Gdańsk University of Technologychemical engineer (applied chemistry) 2002-2005: II High School Władysław Pniewski...
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Degradation of ferritic X10CrAlSi18 stainless steel caused by slurry
PublicationThe slurry erosion tests of ferritic X10CrAlSi18 steel were carried out using a slurry pot device. In order to investigate the erosion process, two series of tests were performed: first one with a constant impact velocity of 5 m/s, 7 m/s and 9 m/s and the second one, during which the impact velocity was changed after every exposure. During each test, an influence of test conditions on volume loss, surface hardness and roughness...
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Ultrasonic wave propagation, digital image correlation and X-ray micro-computed tomography measurements of concrete during splitting (cube #3)
Open Research DataThe DataSet contains the results of the mechanical behaviour of a concrete cube under the splitting test. The cube had dimensions 70 x 70 x 70 cm3 and was made of concrete with the following ingredients: cement type CEM I 42.5R (330 kg/m3), water (165 kg/m3), aggregate 0/2 mm (710 kg/m3), aggregate 2/8 mm (664 kg/m3), aggregate 8/16 mm (500 kg/m3),...
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Ultrasonic wave propagation, digital image correlation and X-ray micro-computed tomography measurements of concrete during splitting (cube #1)
Open Research DataThe DataSet contains the results of the mechanical behaviour of a concrete cube under the splitting test. The cube had dimensions 70 x 70 x 70 cm3 and was made of concrete with the following ingredients: cement type CEM I 42.5R (330 kg/m3), water (165 kg/m3), aggregate 0/2 mm (710 kg/m3), aggregate 2/8 mm (664 kg/m3), aggregate 8/16 mm (500 kg/m3),...
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Ultrasonic wave propagation, digital image correlation and X-ray micro-computed tomography measurements of concrete during splitting (cube #4)
Open Research DataThe DataSet contains the results of the mechanical behaviour of a concrete cube under the splitting test. The cube had dimensions 70 x 70 x 70 cm3 and was made of concrete with the following ingredients: cement type CEM I 42.5R (330 kg/m3), water (165 kg/m3), aggregate 0/2 mm (710 kg/m3), aggregate 2/8 mm (664 kg/m3), aggregate 8/16 mm (500 kg/m3),...
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Ultrasonic wave propagation, digital image correlation and X-ray micro-computed tomography measurements of concrete during splitting (cube #2)
Open Research DataThe DataSet contains the results of the mechanical behaviour of a concrete cube under the splitting test. The cube had dimensions 70 x 70 x 70 cm3 and was made of concrete with the following ingredients: cement type CEM I 42.5R (330 kg/m3), water (165 kg/m3), aggregate 0/2 mm (710 kg/m3), aggregate 2/8 mm (664 kg/m3), aggregate 8/16 mm (500 kg/m3),...