Wyniki wyszukiwania dla: MMF

• 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 009_h_5

  Dane Badawcze

  open access

  • K. Suwińska
  • J. Łubiński

  Data gathered in sliding ring-on-block (flat contact) tribological experiment. Materials: alloy steel (heat treated) vs. ABS plastic.

• 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 009_h_4

  Dane Badawcze

  open access

  • K. Suwińska
  • J. Łubiński

  Data gathered in sliding ring-on-block (flat contact) tribological experiment. Materials: alloy steel (heat treated) vs. ABS plastic.

• 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 039_h_4

  Dane Badawcze

  open access

  • K. Suwińska
  • J. Łubiński

  Data gathered in sliding ring-on-block (flat contact) tribological experiment. Materials: alloy steel (heat treated) vs. ABS plastic.

• 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 019_v_4

  Dane Badawcze

  open access

  • K. Suwińska
  • J. Łubiński

  Data gathered in sliding ring-on-block (flat contact) tribological experiment. Materials: alloy steel (heat treated) vs. ABS plastic.

• 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 019_h_5

  Dane Badawcze

  open access

  • K. Suwińska
  • J. Łubiński

  Data gathered in sliding ring-on-block (flat contact) tribological experiment. Materials: alloy steel (heat treated) vs. ABS plastic.

• 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 039_v_4

  Dane Badawcze

  open access

  • K. Suwińska
  • J. Łubiński

  Data gathered in sliding ring-on-block (flat contact) tribological experiment. Materials: alloy steel (heat treated) vs. ABS plastic.

• 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 009_v_4

  Dane Badawcze

  open access

  • K. Suwińska
  • J. Łubiński

  Data gathered in sliding ring-on-block (flat contact) tribological experiment. Materials: alloy steel (heat treated) vs. ABS plastic.

• 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 039_v_3

  Dane Badawcze

  open access

  • K. Suwińska
  • J. Łubiński

  Data gathered in sliding ring-on-block (flat contact) tribological experiment. Materials: alloy steel (heat treated) vs. ABS plastic.

• 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 019_v_3

  Dane Badawcze

  open access

  • K. Suwińska
  • J. Łubiński

  Data gathered in sliding ring-on-block (flat contact) tribological experiment. Materials: alloy steel (heat treated) vs. ABS plastic.

• 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 019_h_3

  Dane Badawcze

  open access

  • K. Suwińska
  • J. Łubiński

  Data gathered in sliding ring-on-block (flat contact) tribological experiment. Materials: alloy steel (heat treated) vs. ABS plastic.

• 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 039_h_5

  Dane Badawcze

  open access

  • K. Suwińska
  • J. Łubiński

  Data gathered in sliding ring-on-block (flat contact) tribological experiment. Materials: alloy steel (heat treated) vs. ABS plastic.

• 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 019_h_4

  Dane Badawcze

  open access

  • K. Suwińska
  • J. Łubiński

  Data gathered in sliding ring-on-block (flat contact) tribological experiment. Materials: alloy steel (heat treated) vs. ABS plastic.

• 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 039_v_2

  Dane Badawcze

  open access

  • K. Suwińska
  • J. Łubiński

  Data gathered in sliding ring-on-block (flat contact) tribological experiment. Materials: alloy steel (heat treated) vs. ABS plastic.

• 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 039_h_3

  Dane Badawcze

  open access

  • J. Łubiński
  • K. Suwińska

  Data gathered in sliding ring-on-block (flat contact) tribological experiment. Materials: alloy steel (heat treated) vs. ABS plastic.

• Neuroendocrine tumor, grade 2 - Male, 61 - Tissue image [6120730031823301]

  Dane Badawcze

  open access

  • Gdański Uniwersytet Medyczny

  This is the histopathological image of RECTUM tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 1000 slide scanner (20x magnification) and saved to DICOM format.

• Neuroendocrine tumor, grade 2 - Male, 61 - Tissue image [6120730031836611]

  Dane Badawcze

  open access

  • Gdański Uniwersytet Medyczny

  This is the histopathological image of RECTUM tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 1000 slide scanner (20x magnification) and saved to DICOM format.

• Neuroendocrine tumor, grade 2 - Male, 61 - Tissue image [6120730031836071]

  Dane Badawcze

  open access

  • Gdański Uniwersytet Medyczny

  This is the histopathological image of RECTUM tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 1000 slide scanner (20x magnification) and saved to DICOM format.

• Melanoma, NOS - Female, 72 - Tissue image [7130729588554031]

  Dane Badawcze

  open access

  • Gdański Uniwersytet Medyczny

  This is the histopathological image of SKIN tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format.

• Neuroendocrine tumor, grade 2 - Male, 61 - Tissue image [6120730031836391]

  Dane Badawcze

  open access

  • Gdański Uniwersytet Medyczny

  This is the histopathological image of RECTUM tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 1000 slide scanner (20x magnification) and saved to DICOM format.

• Neuroendocrine tumor, grade 2 - Male, 61 - Tissue image [6120730031835231]

  Dane Badawcze

  open access

  • Gdański Uniwersytet Medyczny

  This is the histopathological image of RECTUM tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 1000 slide scanner (20x magnification) and saved to DICOM format.

• Melanoma, NOS - Female, 72 - Tissue image [7130729588553311]

  Dane Badawcze

  open access

  • Gdański Uniwersytet Medyczny

  This is the histopathological image of SKIN tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format.

• Melanoma, NOS - Female, 72 - Tissue image [7130729588552681]

  Dane Badawcze

  open access

  • Gdański Uniwersytet Medyczny

  This is the histopathological image of SKIN tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format.

• Acoustic emission signals in concrete beams under 3-point bending (beams #1, #2, #3)

  Dane Badawcze

  open access

  • M. Rucka
  • M. Nitka
  • M. Knak

  The DataSet contains the results of the mechanical behaviour of concrete beams with dimensions 40 x 40 x 160 cm3under the 3-point bending. The beams were made of concrete with the following ingredients: cement CEM I 42.5R (330 kg/m3), aggregate 0/2 mm (710 kg/m3), aggregate 2/8 mm (664 kg/m3), aggregate 8/16 mm (500 kg/m3), water (165 kg/m3) and super-plasticizer...

• Photocatalytic activity and surface properties of carbon-doped titanium dioxide

  Publikacja

  • P. Górska
  • A. Zaleska-Medynska
  • A. Rucińska
  • J. Hupka

  - Physicochemical Problems of Mineral Processing - Rok 2009

  TiO2 domieszkowany węglem otrzymano poprzez hydrolizę izopropanolanu tytanu(IV) i kalcynację w 350ºC w atmosferze powietrza przez 2h. Przeprowadzone badania wykazały, że fenol (0.21 mM) jest efektywnie degradowany w fazie wodnej, w obecności otrzymanego fotokatalizatora oraz światła z zakresu widzialnego (λ>400 nm). Pole powierzchni właściwej otrzymanego C-TiO2 wynosiło około 127 m2/g, fotokatalizator absorbuje światło z zakresu...

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• Nonlinear Impedance as Possible Result of Ion-Polaron Interaction in Cu2O-Al2O3-SiO2 Glass

  Publikacja

  • R. J. Barczyński

  - JOURNAL OF NON-CRYSTALLINE SOLIDS - Rok 2010

  Nonlinear a.c. impedance measurements were performed in Cu2O-Al2O3-SiO2 glass in wide frequency range. The obtained results shows that a large nonlinearity in the impedance signal is observed at moderate electric fields of an order 1V/mm. The contents of the third harmonics reaches about 10% and strongly depends on temperature and frequency. The investigated glass exhibits mixed electronic-ionic conductivity. Electronic conduction...

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• A new method of current limitation. Nowa metoda ograniczania prądu.

  Publikacja

  • A. Wolny

  - Rok 2003

  Zaprezentowano nowa ideę hybrydowego, bezstykowego ogranicznika prądów zwarciowych oraz możliwości jego aplikacji. W ograniczniku tym zastąpiono łącznik zestykowy bezpiecznikiem o ultra krótkim topiku, dzięki czemu uniknięto niedogodności związanych z napędem występujących w klasycznych łącznikach hybrydowych. Rolą bezpiecznika w tym nowym zestawie jest wyłącznie zadziałanie w warunkach zwarciowych, a po przejęciu prądu...

• Modelling of axial magnetic field effect on electric arc in ablation capillaries

  Publikacja

  • J. Piotrowski
  • A. Wolny

  - Rok 2003

  Badano wpływ osiowego pola magnetycznego na łuk elektryczny w kapilarze ablacyjnej o średnicy do 3 mm. Wyniki porównywano z kapilarą ceramiczną. Łuk zasilany był z baterii kondensatorów prądem do około 1200 A. Stosowano pole magnetyczne wolnozmienne oraz wysokoczęstotliwościowe o indukcji do 10 T. Stwierdzono nawet 3-krotny wzrost napięcia łukowego pod wpływem osiowego pola magnetycznego w kapilarze gazującej, przy braku reakcji...

• Experimental and numerical analysis of streamwise vortex generator for subsonic flow

  Publikacja

  • P. Flaszyński
  • R. Szwaba

  - Chemical and Process Engineering : New Frontiers - Rok 2006

  W pracy przedstawiono porównanie wyników obliczeń numerycznych dwoma kodami (FLUENT i SPARC) na tle badań eksperymentalnych generatora wirów wzdłużnych. Przedstawiono wyniki dla liczb Macha przepływu głównego 0.3 i 0.8. Porównano ciśnienie całkowite w dwóch przekrojach za otworem przez który realizowany jest wydmuch. Przedstawiono strukturę wiru wzdłużnego uzyskaną dla obu programów. Średnica otworu jetu jest równa 1mm, co odpowiada...

• Solubility Characteristics of Acetaminophen and Phenacetin in Binary Mixtures of Aqueous Organic Solvents: Experimental and Deep Machine Learning Screening of Green Dissolution Media

  Publikacja

  • P. Cysewski
  • T. Jeliński
  • M. Przybyłek
  • W. Nowak
  • M. Olczak

  - Pharmaceutics - Rok 2022

  The solubility of active pharmaceutical ingredients is a mandatory physicochemical characteristic in pharmaceutical practice. However, the number of potential solvents and their mixtures prevents direct measurements of all possible combinations for finding environmentally friendly, operational and cost-effective solubilizers. That is why support from theoretical screening seems to be valuable. Here, a collection of acetaminophen...

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• Thermosensitive composite based on agarose and chitosan saturated with carbon dioxide. Preliminary study of requirements for production of new CSAG bioink.

  Publikacja

  • A. Banach-Kopeć
  • S. Mania
  • R. Tylingo
  • A. Wawrzynowicz
  • M. Pawłowska
  • K. Czerwiec
  • M. Deptuła
  • M. Pikuła

  - CARBOHYDRATE POLYMERS - Rok 2024

  This study introduces a method for producing printable, thermosensitive bioink formulated from agarose (AG) and carbon dioxide-saturated chitosan (CS) hydrogels. The research identified medium molecular weight chitosan as optimal for bioink production, with a preferred chitosan hydrogel content of 40–60 %. Rheological analysis reveals the bioink's pseudoplastic behavior and a sol-gel phase transition between 27.0 and 31.5 °C. The...

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• Study of microstress state of P91 steel using complementary mechanical Barkhausen, magnetoacoustic emission, and X-ray diffraction techniques

  Publikacja

  • B. Augustyniak
  • L. Piotrowski
  • P. Maciakowski
  • M. Chmielewski
  • M. Lech-Grega
  • J. Żelechowski

  - JOURNAL OF APPLIED PHYSICS - Rok 2014

  The paper deals with assessment of microstress state of martensite P91 steel using three complementary techniques: mechanical Barkhausen emission, magnetoacoustic emission (MAE), and X-ray diffraction (XRD) profile analysis. Magnetic coercivity Hc and microstructure were investigated with inductive magnetometry and magnetic force microscopy (MFM), respectively. Internal stress level of P91 steel was modified by heat treatment....

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• Fabrication of Gold and Silver Nanoparticles Supported on Zinc Imidazolate Metal–Organic Frameworks as Active Catalysts for Hydrogen Release from Ammonia Borane

  Publikacja

  • E. S. Souza
  • M. A. de Oliveira
  • J. d. J. Santana
  • N. Łukasik
  • O. M. M. Madeiro da Costa
  • L. C. Almeida
  • B. Barros
  • J. Kulesza

  - ACS Omega - Rok 2024

  Well-dispersed Au and Ag nanoparticles (NPs) have been immobilized on a zinc imidazolate metal−organic framework, Zn(mim), using the “one-pot” method and tested as catalysts in ammonia borane hydrolysis. The AuNPs@Zn(mim) and AgNPs@Zn(mim) materials were characterized by FTIR, XRD, ICP-OES, TGA, BET, SEM, and TEM. The AgNPs@Zn(mim) catalyst showed a high yield (98.5%) and high hydrogen generation rate (3352.71 mL min−1 gAg−1) in...

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• Millimeter Wave Negative Refractive Index Metamaterial Antenna Array

  Publikacja

  • R. Aziz
  • S. Kozieł
  • A. Pietrenko-Dąbrowska

  - Scientific Reports - Rok 2024

  In this paper, a novel negative refractive index metamaterial (NIM) is developed and characterized. The proposed metamaterial exhibits negative effective permittivity (εeffe) and negative effective permeability (µeffe) at millimeter wave frequency of 28GHz. This attractive feature is utilized to enhance the gain of a microstrip patch antenna (MPA). Two thin layers of 5  5 subwavelength unit cell array of NIM are placed above a...

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• Superconductivity in a breathing kagome metals ROs2 (R = Sc, Y, Lu)

  Publikacja

  • K. Górnicka
  • M. J. Winiarski
  • D. I. Walicka
  • T. Klimczuk

  - Scientific Reports - Rok 2023

  We have successfully synthesized three osmium-based hexagonal Laves compounds ROs2 (R = Sc, Y, Lu), and discussed their physical properties. LeBail refinement of pXRD data confirms that all compounds crystallize in the hexagonal centrosymmetric MgZn2- type structure (P63/mmc, No. 194). The refined lattice parameters are a = b = 5.1791(1) Å and c = 8.4841(2) Å for ScOs2, a = b = 5.2571(3) Å and c = 8.6613(2) Å for LuOs2 and a =...

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• Cost-efficient design optimization of compact patch antennas with improved bandwidth

  Publikacja

  • A. Bekasiewicz
  • S. Kozieł

  - IEEE Antennas and Wireless Propagation Letters - Rok 2016

  In this letter, a surrogate-assisted optimization procedure for fast design of compact patch antennas with enhanced bandwidth is presented. The procedure aims at addressing a fundamental challenge of the design of antenna structures with complex topologies, which is simultaneous adjustment of numerous geometry parameters. The latter is necessary in order to find a truly optimum design and cannot be executed-at the level of high-fidelity...

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• Low-Cost Unattended Design of Miniaturized 4 × 4 Butler Matrices with Nonstandard Phase Differences

  Publikacja

  • A. Bekasiewicz
  • S. Kozieł

  - SENSORS - Rok 2021

  Design of Butler matrices dedicated to Internet of Things and 5th generation (5G) mobile systems—where small size and high performance are of primary concern—is a challenging task that often exceeds capabilities of conventional techniques. Lack of appropriate, unified design approaches is a serious bottleneck for the development of Butler structures for contemporary applications. In this work, a low-cost bottom-up procedure for...

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• Pre-Treatment of Furniture Waste for Smokeless Charcoal Production

  Publikacja

  • P. Kazimierski
  • P. Hercel
  • K. Januszewicz
  • D. Kardaś

  - Materials - Rok 2020

  The aim of this study was to assess the possibility of using furniture waste for smokeless fuel production using the pyrolysis process. Four types of wood-based wastes were used in the pyrolysis process: pine sawdust (PS), chipboard (CB), medium-density fiberboard (MDF), and oriented strand board (OSB). Additionally, the slow and fast types of pyrolysis were compared, where the heating rates were 15 C/min and 100 C/min, respectively....

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• Rapid Re-Design and Bandwidth/Size Trade-Offs for Compact Wideband Circular Polarization Antennas Using Inverse Surrogates and Fast EM-Based Parameter Tuning

  Publikacja

  • U. Ubaid
  • S. Kozieł
  • I. Mabrouk

  - IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION - Rok 2019

  Design of compact wideband circularly polarized (CP) antennas is challenging due to the necessity of simultaneous handling of several characteristics (reflection, axial ratio, gain) while maintaining a small size of the structure. Antenna re-design for various operating bands is clearly more difficult yet practically important because intentional reduction of the bandwidth (e.g., by moving the lower edge of the operating band up...

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• Stanowisko badawcze "Fizyczny model elektroenergetycznego węzła wytwórczego"

  Aparatura Badawcza

  Katedra Elektroenergetyki

• Identification and characterization of single-stranded DNA-binding protein from the facultative psychrophilic bacteria Pseudoalteromonas haloplanktis

  Publikacja

  • M. Olszewski
  • M. Nowak
  • A. Cyranka-Czaja
  • J. Kur

  - MICROBIOLOGICAL RESEARCH - Rok 2014

  Single-stranded DNA-binding protein (SSB) plays an important role in DNA metabolism such as DNAreplication, repair, and recombination, and is essential for cell survival. This study reports on the ssb-likegene cloning, gene expression and characterization of a single-stranded DNA-binding protein of Pseudoal-teromonas haloplanktis (PhaSSB) and is the first report of such a protein from psychrophilic microorganism.PhaSSB possesses...

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• Experimental and numerical study of thermal and electrical potential of BIPV/T collector in the form of air-cooled photovoltaic roof tile

  Publikacja

  • J. Łukasik
  • J. Wajs

  - INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER - Rok 2024

  Among renewable energy sources, Building-Integrated Photovoltaic/Thermal (BIPV/T) systems are gaining increasing interest. To improve their economic competitiveness, technologies that increase their efficiency are searched for. The paper is devoted to evaluating the impact of various air-cooling configurations on the thermal and electrical performance of a photovoltaic roof tile. A numerical model of the own experimental system...

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• Using differential pressure sensor to measure nitrous oxide level in a tank

  Publikacja

  • M. Czapski
  • W. Lachowski
  • N. Balogh
  • W. Deszczyński
  • K. Hucik
  • W. Sieklicki

  - Rok 2022

  A method for measuring the level of liquid nitrous oxide oxidizer in a hybrid rocket motor oxidizer tank is proposed. Presented approach is more accurate than the most commonly used method of this measurement, which employs weighting of the whole sounding rocket or an oxidizer tank. In our solution we use a differential pressure sensor to measure the change of pressure at the bottom of an oxidizer tank in comparison to the pressure...

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• Near-Field Wireless Sensing of Plastics and Papers Using Frugal Peel-Off Passive Tag

  Publikacja

  • A. K. Jha
  • A. Lamęcki
  • R. Gómez-García
  • M. Mrozowski

  - IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES - Rok 2023

  This article presents a novel frugal approach of testing plastics and papers using a near-field microwave sensing technique with a peel-off tag. The proposed sensing technique involves two electrical entities: the sensor, which may be regarded as a reader, and a disposable tag. The reader is a modified design of a gap-coupled microstrip line (GCML) sensor, while the passive tag is a standard double-ring complementary split-ring...

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• Experimental study of flow boiling pressure drop and heat transfer of R1233zd(E) at moderate and high saturation temperatures

  Publikacja

  • M. Pysz
  • S. Głuch
  • D. Mikielewicz

  - INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER - Rok 2023

  The paper presents the results of experimental study of flow boiling of R1233zd(E) in minichannel at moderate and high saturation temperatures. The heat transfer coefficient and pressure drop were measured for flow boiling in a stainless steel tube with 2 mm inside diameter and a length of 300 mm. Experiment has been conducted for saturation temperatures ranging from 83 to 145 °C which corresponds to values of reduced pressures...

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• Investigation of MIEX® resin sedimentation in the aspect of particle sizes remaining in the supernatant

  Publikacja

  • M. Rajca
  • R. T. Bray
  • A. Sokołowska
  • E. Kulbat

  - Desalination and Water Treatment - Rok 2018

  The aim of the study was to evaluate the effectiveness of the MIEX® resin sedimentation process, both new and repeatedly used in hybrid water treatment MIEX®DOC + microfiltration (MF) or ultrafiltration (UF) processes (repeatedly regenerated). The tests consisted of performing 1 h sedimentation of the suspension resin in nonflow conditions and analysis of supernatant water at different process durations. The suspension weight analysis...

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• The occurrence of heavy metals and metal-resistant bacteria in water and bottom sediments of the Straszyn reservoir (Poland)

  Publikacja

  • E. Kulbat
  • A. Sokołowska

  - Rok 2017

  The aim of this study is investigate the distribution of selected heavy metals (zinc, copper, lead, cadmium) and metal-resistant bacteria in water and bottom sediments of drinking water reservoir for Gdańsk (Poland). The research area - Straszyn Lake is a dam reservoir on Radunia river, of the total volume of 3 mln m3. Sediment and water sampling took place between May and October 2013 (eight series). Regarding metal concentration...

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• Numerical analysis of high temperature minichannels heat exchanger performance

  Publikacja

  • J. Wajs
  • T. Kura
  • D. Mikielewicz
  • E. Fornalik-Wajs
  • J. Mikielewicz

  - Rok 2020

  Nowadays, the most difficult technological challenge in energy sector is connected with the gas micro-CHP units, dedicated to the distributed power generation. They are expected to be of high efficiency and at the same time of compact in size. Regarding the first reason, significant increase in microturbine efficiency can only be achieved by increase in the engine operating temperature. Therefore, one of the critical elements in...

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• Mechanical and radiation shielding properties of concrete reinforced with boron--basalt fibers using Digital Image Correlation and X--ray micro--computed tomography

  Publikacja

  • Ł. Skarżyński

  - CONSTRUCTION AND BUILDING MATERIALS - Rok 2020

  The paper presents experimental investigations of the radiation shielding, mechanical and fracture properties of concrete reinforced with 5 kg/m3 of novel basalt fibers infused with boron oxide (BBF). However, further studies concerning other dosages i.e. 1 kg/m3, 10 kg/m3, 15 kg/m3 and 20 kg/m3 are currently carried out. Experiments with neutron source revealed that addition of BBF as a dispersed concrete reinforcement could improve...

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• Investigation of Acoustic Properties of Poroelastic Asphalt Mixtures in Laboratory and Field Conditions

  Publikacja

  • W. Gardziejczyk
  • P. Jaskuła
  • J. Ejsmont
  • M. Motylewicz
  • M. Stienss
  • P. Mioduszewski
  • P. Gierasimiuk
  • M. Zawadzki

  - Materials - Rok 2021

  Measures for the improvement of acoustic conditions in the vicinity of roads include the construction of pavement structures with low-noise surfaces with optimal macrotexture and the highest possible sound absorption coefficient. Laboratory evaluation of acoustic properties of a designed asphalt mixture before its placement in the pavement is a good solution. Currently, the most popular method for the determination of the sound...

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• Ball on disk test AL(rf.)-Al2O3-r25

  Dane Badawcze

  open access

  • J. Łubiński
  • R. Jendrzejewski

  Hard particle reinforced Al6061 alloy testing. Laser remelting and kinetic injection of particulate material. Ball on disc tribological test. Ball material: Al2O3. Ball diameter: 5 mm. Sliding path radius: 25 mm. Disk material: Al6061 not treated (reference).