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Effect of underwater local cavity welding method conditions on diffusible hydrogen content in deposited metal
PublikacjaOne of the methods with great potential for applications in underwater repairs is local cavity welding. In local cavity method, cooling conditions and diffusible hydrogen amount in weld metal are nearly the same as those existed during welding in the air. This paper presents the results of literature survey and preliminary tests of the effect of local cavity welding conditions on diffusible hydrogen amount in a deposited metal....
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Mild X-linked Alport syndrome due to the COL4A5 G624D variant originating in the Middle Ages is predominant in Central/East Europe and causes kidney failure in midlife
PublikacjaA study of 269 children enrolled into a National Registry for children with persistent glomerular hematuria identified 131 individuals with genetically confirmed X-linked Alport Syndrome. A single variant c.1871G>A p.Gly624Asp (G624D) in COL4A5 was predominant and accounted for 39% of Xlinked Alport Syndrome in unrelated Polish families (44 of 113). To evaluate its origins, the genetic variation in a 2.79 Mb segment encompassing...
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A comparative performance assessment of a hydrodynamic journal bearing lubricated with oil and magnetorheological fluid
PublikacjaThis work presents the investigation results of a journal bearing lubricated with magnetorheological fluid that is activated by a local constant magnetic field to vary both the local flow resistance and pressure. The bearing performance is assessed via Finite Element Modelling (FEM) and results are corroborated by experiments. The FEM model uses the Bingham model to describe the fluid film. A dedicated test rig is used to assess...
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Experimental research on a hydrodynamic thrust bearing with hydrostatic lift pockets: Influence of lubrication modes on bearing performance
PublikacjaThe aim of the study is to investigate the performance of a thrust bearing equipped with hydrostatic lift pockets under different lubrication modes. Three types of flat land bearing lubrication modes are studied experimentally: hydrostatic lubrication (HS; forced oil injection to the pockets), hybrid lubrication (HS + HD; hydrostatic lubrication combined with the external forced bearing oil supply) and hydrodynamic lubrication...
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The influence oil additives on spread cracks in silicon nitride
PublikacjaThe paper presents an experimental study of the influence of oil additives (Cl, S, P, cerium dioxide (CeO2)) on spread cracks in silicon nitride. The additives Cl, S, P are bound in molecules in liquid form soluble in the base oil. The CeO2 is purely in powder form in suspension. The use of CeO2 powder was made based on the good results of polishing of silicon nitride. A ceramic angular contact ball bearing was modelled using a...
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Micro solid oxide fuel cells and their fabrication methods
PublikacjaW pracy przedstawiono obecny stan badań związany z tlenkowymi microogniwami paliwowymi oraz metodami ich wytwarzania.
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Modeling lubricant flow between thrust-bearing pads
PublikacjaInlet temperature is one of the main inputs in all models for the analysis of fluid film bearing performance. At the same time, inlettemperature distribution and also oil velocity distribution at the inlet are the result of flow phenomena in the gap between the bearingpads. These phenomena are complex and in many cases further affected by any special arrangements of forced oil supply to the gapbetween pads. The reason for such...
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Investigations into tendency to stress corrosion of joints welded in austenitic and duplex steels
PublikacjaPrzedstawiono wyniki badań spawanych złączy różnoimiennych wykonanych ze stali austenitycznej oraz typu duplex 2205. Badania podatności do korozji naprężeniowej złączy wykonano metodą odkształcania z małą prędkością. Próby przeprowadzono w środowisku obojętnym oraz agresywnym (MgCl2).
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Synergistic effect of nickel formate on the thermal and flame-retardant properties of polypropylene
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Amplifying dementia as a global public health problem: A cross-country comparison of the impact of COVID-19 pandemic
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Facilitators and barriers to adaptive implementation of the Meeting Centers Support Program (MCSP) in three European countries; the process evaluation within the MEETINGDEM study
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Social health of people with dementia during the SARS-CoV-2 pandemic
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A survey of geriatric psychiatry training across Europe
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The use of technology by people with dementia and informal carers during COVID-19: a cross-country comparison
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502 - Diagnosis of dementia and post-diagnostic support – voice of people with dementia living in Poland
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Does the community-based combined Meeting Center Support Programme (MCSP) make the pathway to day-care activities easier for people living with dementia? A comparison before and after implementation of MCSP in three European countries
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Importance of oxidative stress in the pathogenesis, diagnosis, and monitoring of patients with neuropsychiatric disorders, a review
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Identification of the featured-element in fine road dust of cities with coal contamination by geochemical investigation and isotopic monitoring
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Transformation pathways and fate of engineered nanoparticles (ENPs) in distinct interactive environmental compartments: A review
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Evaluation of turning with different cooling-lubricating techniques in terms of surface integrity and tribologic properties
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Tribological and thermal behavior with wear identification in contact interaction of the Ti6Al4V-sintered carbide with AlTiN coatings pair
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Synergisms and antagonisms between MoS2 nanotubes and representative oil additives under various contact conditions
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Effect of ageing automotive gear oils on scuffing and pitting
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Technological and tribological aspects of milling-burnishing process of complex surfaces
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The lubricant-coating interaction in rolling and sliding contacts
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Sleep quality, chronotype, temperament and bipolar features as predictors of depressive symptoms among medical students
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Peripheral neuropathy and health-related quality of life in patients with primary Sjögren’s syndrome: a preliminary report
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A different methylation profile of circadian genes promoter in breast cancer patients according to clinicopathological features
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Effects of surface texturing and kind of lubricant on the coefficient of friction at ambient and elevated temperatures
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Mild X-linked Alport syndrome due to the COL4A5 G624D variant originating in the Middle Ages is predominant in Central/East Europe and causes kidney failure in midlife
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Influence of Time of Day on Propofol Pharmacokinetics and Pharmacodynamics in Rabbits
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Sectarianism as a Factor Shaping Persian Gulf Security
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Characterization of NiTi SMA in its unusual behaviour in wear tests
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Properties of corn starch subjected hydrothermal modification
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Processing and thermal characterization of polymer derived SiCN(O) and SiOC reticulated foams
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Cold sintering of colloidal silica particles using different alkali solutions
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Numerical modelling and experimental verification of compressible squeeze film pressure
PublikacjaThe validity of using the Reynolds equation for compressible squeeze film pressure was tested with computational fluid dynamics (CFD). A squeeze film air bearing was instrumented with pressure sensors and non-contacting displacement probes to provide transient measurements of film thickness and pressure. The film thickness measurements also provided input parameters to the numerical prediction. However, numerical results showed...
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Correlations of structural, thermal and electrical properties of sodium doped complex borophosphosilicate glass
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Influence of Ni ion site occupancy on laser induced third harmonic generation (THG) studies in Li2SO4–MgO–P2O5 amorphous system
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Methodical engineering of defects in MnXZn1-X O(x = 0.03, and 0.05) nanostructures by electron beam for nonlinear optical applications: A new insight
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Research into GTA automatic soft soldering technology for solar energy collector components
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Testing of PTA automatic braze-welding technology for producing absorber joints of solar collectors
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Technology of laser deposition of narrow bead overlays using solid and flux-cored wires
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Fe3O4/graphene oxide/Fe4[Fe(CN)6]3 nanocomposite for high performance electromagnetic interference shielding
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A study of modern materials for arc spraying
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Technology of welding hard wearing plates
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Technology of braze welding absorber tubes to copper foil in solar collectors by the GTA method
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Dielectric and electrical properties of synthesized PBGO/Fe3O4 nanocomposite
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Book review: John M Hagedorn (ed.), Gangs in the Global City: Alternatives to Traditional CriminologyHagedornJohn M (ed.), Gangs in the Global City: Alternatives to Traditional Criminology, University of Illinois Press: Urbana, 2007; 320 pp.: ISBN 9780252073373, US$28.00
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Book Review: Vishwas Satgar (ed.), The Solidarity Economy Alternative: Emerging Theory and PracticeSatgarVishwas (ed.), The Solidarity Economy Alternative: Emerging Theory and Practice, University of KwaZulu-Natal Press: Durban, 2014; 332 pp.: ISBN 9781869142575, US$34.44
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