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Wyświetlanie 1-15 z 2438
Tytuł:
Complex heat exchange in brake friction pairs
Złożona wymiana ciepła w parach ciernych hamulców
Autorzy:
Kernytskyy, I.
Volchenko, D.
Royko, Y.
Zhuravlev, D.
Dolishniy, B.
Bekish, I.
Rys, V.
Humeniuk, R.
Sholudko, Y.
Berezovetska, O.
Szlachetka, O.
Powiązania:
https://bibliotekanauki.pl/articles/28765641.pdf
Data publikacji:
2024
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Źródło:
Acta Scientiarum Polonorum. Architectura; 2024, 23; 32-43
1644-0633
Pojawia się w:
Acta Scientiarum Polonorum. Architectura
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Comparative Study on Ex-Situ & In-Situ Formed Metal Matrix Composites
Autorzy:
Gobalakrishnan, B.
Rajaravi, C.
Udhayakumar, Gobikrishnan
Lakshminarayanan, P. R.
Powiązania:
https://bibliotekanauki.pl/articles/2203734.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
MMCs
Al-SiC
Al-TiB2
extrusion
heat treatment
mechanical properties
microstructure
Opis:
An attempt has been made to synthesize the aluminium based ex-situ (Al-SiC) and in-situ (Al-TiB2) formed metal matrix composites with varying weight percentage of reinforcement contents such as 4wt.%, 6wt.% and 8wt.%. Synthesized composites were subjected to a cold extrusion process followed by heat treatment according to the ASTM B 918-01 standards. The mechanical properties of in-situ composites were evaluated as per the ASTM guidelines and compared with ex-situ formed composites and base metal properties. Superior properties were noticed in the in-situ formed composites and the mechanical properties such as yield strength, Ultimate tensile strength (UTS) and Hardness for both ex-situ and in-situ composites were found to increase with increasing the reinforcement addition. Cold extruded Al-8 wt.% SiC composite properties such as hardness, yield strength and UTS are 87 RB, 152 MPa, 216 MPa respectively. Whereas, for Al-8 wt.% TiB2 composite, the corresponding properties are 94 RB, 192 MPa, 293 MPa. The morphology of the composites is analysed by Optical and Scanning Electron Microscopic (SEM) whereas presence of reinforcement particles such SiC and TiB2 along with intermetallic phases Mg2Si and Al5FeSi are confirmed by EDX, XRD and Element Mapping analyses.
Źródło:
Archives of Metallurgy and Materials; 2023, 68, 1; 171--185
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A simplified method for determining potential heavy metal leached from sediments of stormwater and combined sewer systems – importance for public health
Autorzy:
Duda-Saternus, S.
Kujawska, J.
Wojtaś, E.
Kozłowska, A.
Jamka, K.
Szeląg, B.
Babko, R.
Łagód, G.
Powiązania:
https://bibliotekanauki.pl/articles/28763031.pdf
Data publikacji:
2023
Wydawca:
Instytut Medycyny Wsi
Źródło:
Annals of Agricultural and Environmental Medicine; 2023, 30, 3; 455-461
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analyzing the bibliometric progress of sustainable monitoring and analysis of sports training loads
Autorzy:
Xing, Y.
Bibi, B.
Zhang, Y.M.
Mushtaq, R.T.
Powiązania:
https://bibliotekanauki.pl/articles/28762638.pdf
Data publikacji:
2023
Wydawca:
Instytut Medycyny Wsi
Źródło:
Annals of Agricultural and Environmental Medicine; 2023, 30, 2; 352-363
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Applicability of 2,4-dinitrophenylhydrazine (DNPH) method of protein oxidative damage measurement in the seminal plasma of canine (Canis lupus familiaris) and stallion (Equus caballus)
Autorzy:
Mogielnicka-Brzozowska, M.
Woźniak, M.J.
Cichowska, A.W.
Fraser, L.
Kraziński, B.
Strzezek, R.
Zielińska, D.
Powiązania:
https://bibliotekanauki.pl/articles/16647556.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
2,4-dinitrophenylhydrazine
canine
protein carbonylation
seminal plasma
stallion
Opis:
Seminal plasma (SP) proteins are responsible for sperm functional quality. Developing a reliable method to determine the degree of oxidative damage of these proteins is important for establishing semen fertilizing ability. The main aim of the study was to verify the applicability of protein carbonyl derivatives measurement in the SP of canine and stallion, using a method with 2,4-dinitrophenylhydrazine (DNPH). The research material consisted of ejaculates obtained from eight English Springer Spaniels, and from seven half-blood stallions during the breeding and non-breeding season. The content of carbonyl groups in the SP was measured on the basis of the reactions with DNPH. The following reagent variants were used to dissolve protein precipitates: Variant 1 (V1) – 6M Guanidine solution and Variant 2 (V2) – 0.1M NaOH solution. It has been shown that to obtain reliable results for the measurement of protein carbonylated groups in the dog and horse SP, both 6M Guanidine and 0.1M NaOH may be used. A correlation was also found between the number of carbonyl groups and the total protein content in the canine (V1: r = -0.724; V2: r = -0.847) and stallion (V1: r = -0.336; V2: r = -0.334) SP. Additionally, the study showed a higher content (p≤0.05) of protein carbonyl groups in the stallion SP in the non-breeding season compared to the breeding season. The method based on the reaction with DNPH, due to its simplicity and cost effectiveness, appears to be suitable for large-scale application in the determination of the SP proteins oxidative damage in dog and horse semen.
Źródło:
Polish Journal of Veterinary Sciences; 2023, 26, 2; 177-184
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Brain-derived neurotrophic factor and matrix metalloproteinase-9 activity during rehabilitation therapy of schizophrenic patients - environmental pilot study
Autorzy:
Markiewicz, R.
Markiewicz-Gospodarek, A.A.
Dobrowolska, B.
Bojar, I.
Łoza, B.
Powiązania:
https://bibliotekanauki.pl/articles/28762640.pdf
Data publikacji:
2023
Wydawca:
Instytut Medycyny Wsi
Źródło:
Annals of Agricultural and Environmental Medicine; 2023, 30, 2; 315-321
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Changes in the content of D-chiro-inositol and its α-D-galactosyl derivatives during vegetation and desiccation of common buckwheat (Fagopyrum esculentum Moench)
Zmiany zawartości D-chiro-inozytolu i jego α-D-galaktozydowych pochodnych podczas wegetacji i desykacji gryki zwyczajnej (Fagopyrum esculentum Moench)
Autorzy:
Lahuta, L.B.
Szablińska-Piernik, J.
Górecki, R.J.
Mitrus, J.
Horbowicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/29433262.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Źródło:
Agronomy Science; 2023, 78, 2; 83-97
2544-4476
2544-798X
Pojawia się w:
Agronomy Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Changes in the gene pool composition of Scots pine depending on the mode of regeneration
Autorzy:
Żukowska, W.B.
Lewandowski, A.
Wójkowicz, B.
Litkowiec, M.
Rożkowski, R.
Urbaniak, L.
Kowalczyk, J.
Powiązania:
https://bibliotekanauki.pl/articles/29430785.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Źródło:
Dendrobiology; 2023, 89; 46-55
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electrochemical Method of Copper Powder Synthesis on Rotating Electrode in the Presence of Surfactants
Autorzy:
Wojtaszek, K.
Cebula, F.
Partyka, B.
Deszcz, P.
Włoch, G.
Socha, R. P.
Woźny, K.
Żabiński, Piotr
Wojnicki, Marek
Powiązania:
https://bibliotekanauki.pl/articles/2203711.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
copper powder
electrochemical synthesis
rotating electrode
ethylene glycol
Opis:
This paper presents a method of synthesizing copper powders by electrochemical method with the use of a rotating working electrode. The influence of the rotation speed of the working electrode, the current density, the concentration of copper ions, and the addition of ethylene glycol on the shape, size, and size distribution of the obtained powders were investigated. Properties of the synthesized powders were characterized by scanning electron microscopy (SEM) and X-ray powder diffractometry (XRD). It has been shown that it is possible to obtain copper powders with a size of 1 µm by an electrochemical method using the rotary cathode, in sulphate bath with addition of ethylene glycol as a surfactant. Increasing current density causes a decrease in the average size of the obtained powder particles. The addition of 2.5% of ethylene glycol prevents the formation of dendritic powders. The change in the concentration of copper ions in the range from 0.01 to 0.15 mol/dm3 in the electrolyte did not show any significant effect on the size of obtained particles. However, higher concentrations of copper limiting the presence of dendritic-shape particles. Changing the speed of rotation of the electrode affects both the size and the shape of synthesized copper powder. For the rotational speed of the electrode of 115 rpm, the obtained powders have a size distribution in the range of 0-3 µm and an average particle size of 1 µm. The particles had a polygonal shape with an agglomeration tendency.
Źródło:
Archives of Metallurgy and Materials; 2023, 68, 1; 375--386
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Establishing score equivalence of the GDS-30 scale and International Classification of Functioning, Disability and Health range, using Rasch analysis
Autorzy:
Sozański, B.
Ćwirlej-Sozańska, A.B.
Wilmowska-Pietruszyńska, A.
Spalek, R.
de Sire, A.
Wiśniowska-Szurlej, A.
Powiązania:
https://bibliotekanauki.pl/articles/28761658.pdf
Data publikacji:
2023
Wydawca:
Instytut Medycyny Wsi
Źródło:
Annals of Agricultural and Environmental Medicine; 2023, 30, 1; 105-110
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Integration test procedures for a collision avoidance decision support system using STPA
Autorzy:
Dugan, S.
Skjetne, R.
Wróbel, K.
Montewka, J.
Gil, M.
Utne, J. B.
Powiązania:
https://bibliotekanauki.pl/articles/24201452.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Opis:
The transition from conventionally manned to autonomous ships is accompanied by the development of enhanced Decision Support Systems (DSS) for navigators. Such systems need to consider interactions among hardware, software, and humans and their potential effects on system performance, which require rigorous testing to verify the system's safe decision-making ability and operational limits. Testing requirements for verification are aimed at 1) assessing the system's reliability and failure handling performance, and 2) integration testing. This work uses the System-Theoretic Process Analysis (STPA) to develop integration tests for a novel DSS. STPA is a structured methodology to identify hazards from multiple sources, including hardware or software failures, system interactions, and human errors. The objectives of the study are to develop and assess the feasibility of integration test procedures based on STPA. The stability monitoring subsystem from the DSS is analyzed as a case study. The results are used to suggest functional and performance integration test procedures.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2023, 17, 2; 375--381
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Intranasal (IN) COVID-19 vaccines - a breakthrough
Autorzy:
Gambhir, R.S.
Kaur, K.
Matariya, R.
Singh, B.
Sood, R.
Singh, J.
Powiązania:
https://bibliotekanauki.pl/articles/28765534.pdf
Data publikacji:
2023
Wydawca:
Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
Opis:
Emerging variants of COVID-19 have threatened the effectiveness of intramuscular (IM) vaccines since that are made to target only the spike protein. Development of Intranasal (IN) vaccination has been proven to provide both the mucosal and systemic immune responses for broader and long lasting protection. Many IN vaccine candidates (virus-vectored vaccines, recombinant subunit vaccines and live attenuated vaccines) are in different phases of clinical trials and in near future many companies would be releasing their vaccines into the drug market. Potential advantages of IN vaccination over IM vaccination makes them ideal to be administered in children and developing populations of the world. This paper focuses on the very recent developments in intranasal vaccination with a spotlight on their safety and efficacy concerns. IN vaccination can prove to be game-changer in handling COVID-19 and potential viral contagious diseases in future.
Źródło:
Roczniki Państwowego Zakładu Higieny; 2023, 74, 1; 15-18
0035-7715
Pojawia się w:
Roczniki Państwowego Zakładu Higieny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation on surface roughness and kerf analysis in abrasive water jet machining of silicon carbide
Autorzy:
Hynes, N.R.J.
Asirvatham, A.D.
Sankaranarayanan, R.
Raja, S.
Benita, B.
Atchaya, J.
Powiązania:
https://bibliotekanauki.pl/articles/24200627.pdf
Data publikacji:
2023
Wydawca:
Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:
ceramic
cutting
abrasive water jet machining
ceramika
cięcie
cięcie strumieniem wodno-ściernym
Opis:
Purpose: Machining silicon carbide (SiC) is challenging due to its brittle and maximum tensile nature. Lapping or laser beam are done with a high cost of manufacturing and low material removal rates. Water abrasive jet cutting is a promising candidate since the machining temperatures and processing force of ceramics are extremely low. Investigation into the abrasive water jet machining of silicon carbide is carried out in the present work. Design/methodology/approach: The variations in traverse speed while abrasive water jet cutting of silicon carbide and its effect on the surface roughness and kerf characteristics are studied. Silicon Carbide abrasive material is used as garnet consisting of 80 mesh. The surface roughness was calculated along with the depth of the cut made during the processing. Findings: The outcomes demonstrated that the traverse speed is more effective upon the surface roughness and is an important factor that damages the top kerf width and the kerf taper angle. Research limitations/implications: Based on the hardness and thickness of the SiC plate, the taper angle is high, and for a feed rate of 10 mm/min, the surface roughness is low. Less thickness of the SiC plate could have a lower taper angle than with high thickness. The erosive force is provided by abrasive material along with the jet stream. Practical implications: Water abrasive fine jet could effectively machinate silicon carbide ceramic material with a better surface finish accurately. Suitable surface roughness with higher productivity can be attained with medium traverse speed. Originality/value: The effect of process parameters on kerf taper angle and top kerf width in the abrasive water jet machining of silicon carbide is explored, considering surface roughness as an important output parameter.
Źródło:
Archives of Materials Science and Engineering; 2023, 120, 1; 30--35
1897-2764
Pojawia się w:
Archives of Materials Science and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kinetics models of hydrogen sulphide adsorption from hydrogel biochar derived from empty fruit bunch (EFB)
Autorzy:
Alias, A.B.
Ariffin, A.Y.
Norain, N.M.R.
Rashid, Z.A.
Powiązania:
https://bibliotekanauki.pl/articles/24200629.pdf
Data publikacji:
2023
Wydawca:
Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:
hydrogen sulphide
adsorption
kinetics models
empty fruit bunch
hydrogel
siarkowodór
adsorpcja
modele kinetyki
pusta kiść owoców
hydrożel
Opis:
Purpose: This research aims to investigate the detailed state of adsorption kinetics modelling and research on the application of hydrogen sulfide adsorption by hydrogel derived from empty fruit bunch (EFB), the determination of the kinetics parameters, and the comparison between models in a selection of the best-fit model. Design/methodology/approach: The kinetics modelling used are pseudo-first-order and pseudo-second-order models. The correlation coefficient was used to evaluate the suitability of the equation R2. After obtaining the results, the comparison was made by comparing the R2 of each model. The pseudo-second-order model has a higher value of correlation coefficient, R2, making it the most suitable kinetics model for adsorption systems. Findings: The R2 for pseudo-first-order on the effect of dry bed height was 0.8814, whereas its effect on powder bed height was 0.9537, and that of the wet bed height was 0.9607. Meanwhile, the R2 for pseudo-second-order on the effect of dry bed height was 0.89, on the effect of the powder bed height was 0.99, and on the effect of the bed height of wet was 0.99, the highest among kinetic models. Based on the results, the pseudo-second-order model best describes the adsorption of hydrogen sulfide (H2S) by hydrogel biochar. Research limitations/implications: The kinetics modelling used are pseudo-first-order, and pseudo-second-order models for hydrogen sulfide adsorption by hydrogel originating from empty fruit bunches (EFB). Practical implications: Based on the results, the pseudo-second-order model best describes the adsorption of hydrogen sulfide (H2S) by hydrogel biochar. Kinetic studies are important in understanding the reactions and design of the process. Originality/value: The authenticity results of this article were found to be 17% similar. The novelty of this paper is the kinetics study of the new adsorbent developed based on EFB to adsorb H2S.
Źródło:
Archives of Materials Science and Engineering; 2023, 120, 1; 15--21
1897-2764
Pojawia się w:
Archives of Materials Science and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Leprosy - neglected tropical disease in Pygmies inhabiting Central African Republic
Autorzy:
Bylicka-Szczepanowska, E.
Podlasin, R.B.
Korzeniewski, K.
Powiązania:
https://bibliotekanauki.pl/articles/28763049.pdf
Data publikacji:
2023
Wydawca:
Instytut Medycyny Wsi
Źródło:
Annals of Agricultural and Environmental Medicine; 2023, 30, 3; 570-576
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 2438

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