Temat: constant magnetic field - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Electrochemical deposition of cobalt-nickel coatings in a constant magnetic field
Autorzy:: Miękoś, Ewa
Klepka, Tomasz
Zieliński, Marek
Sroczyński, Dariusz
Powiązania:: https://bibliotekanauki.pl/articles/2146891.pdf
Data publikacji:: 2022
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: cobalt-nickel coatings
constant magnetic field
electrochemical deposition
Opis:: The electrochemical deposition of Co-Ni coatings on gold-disc electrode with and without of constant magnetic field (CMF) has been investigated using cyclic voltammetry (CV), scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDX). The EDX results showed that CMF applied during the electrodeposition of Co-Ni coatings affects their composition. In particular, an increase by 17% in the content of cobalt in coating, i.e. the main component, with a simultaneous decrease of nickel content has been observed when magnetic induction B of 1200 mT was applied compare to this without of CMF. Moreover, it has been supposed that the increase of internal stresses in electrodeposited Co-Ni coatings under CMF can be attributed to a decrease in their thickness.
Źródło:: Physicochemical Problems of Mineral Processing; 2022, 58, 2 (Special issue - selected papers conference: Physicochemistry of interfaces - instrumental methods); art. no. 146066
1643-1049
2084-4735
Pojawia się w:: Physicochemical Problems of Mineral Processing
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Influence of various forms of cellulose on the mechanical properties of polymer composites modified in a constant magnetic field
Wpływ różnych form celulozy na właściwości mechaniczne kompozytów polimerowych modyfikowanych w stałym polu magnetycznym
Autorzy:: Miękoś, Ewa
Zieliński, Marek
Sroczyński, Dariusz
Fenyk, Anna
Powiązania:: https://bibliotekanauki.pl/articles/2202577.pdf
Data publikacji:: 2022
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Chemii Przemysłowej
Tematy:: cellulose
polymer composite
constant magnetic field
celuloza
kompozyt polimerowy
stałe pole magnetyczne
Opis:: The paper presents the study of polymer composites on epoxy resin matrix, polymerized in the environment of a constant magnetic field. The composites contained admixtures of various forms of cellulose – microcrystalline cellulose and cellulose from waste hemp straw fibers – in an amount ranging from 10 to 30 wt%. Changes in the mechanical properties due to the effect of a constant magnetic field with a magnetic induction value of B = 0.5 T. The composites additionally contained magnetic particles in the form of carbonyl iron, in the amount of 10 wt%.
W artykule przedstawiono badania kompozytów polimerowych na osnowie żywicy epoksydowej, które polimeryzowały w środowisku stałego pola magnetycznego. Kompozyty zawierały domieszki w postaci różnych form celulozy, w ilości od 10 do 30 % mas. Była to celuloza mikrokrystaliczna oraz celuloza z odpadowych włókien słomy konopnej. Obserwowano zmiany właściwości mechanicznych na skutek działania stałego pola magnetycznego o wartości indukcji magnetycznej B = 0.5 T. Kompozyty zawierały dodatkowo cząstki magnetyczne w postaci żelaza karbonylkowego, w ilości 10 % mas.
Źródło:: Polimery; 2022, 67, 10; 497--502
0032-2725
Pojawia się w:: Polimery
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Effect of magnetic fields and fertilizers on grass and onion growth on technogenic soils
Autorzy:: Vasilyeva, Maria
Kovshov, Stanislav
Zambrano, Johnny
Zhemchuzhnikov, Maxim
Powiązania:: https://bibliotekanauki.pl/articles/1844328.pdf
Data publikacji:: 2021
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: alternating magnetic field
biochar
bioefficiency
biohumus
constant magnetic field
fertilization
physiological parameters of plants
technogenic soils
Opis:: The article deals with effect the use of organic (biohumus) and mineral (biochar) fertilizers based on the products of chicken vital activity on changing the fertility of technogenic sod-podzolic soils exposed to constant and unstable magnetic fields. The germination and growth dynamics of grasses and onions were investigated. The rational rate of introduction of the studied fertilizers into the technogenic soil is determined. Running (RMF) and direct (DMF) magnetic fields were applied in two ways: with fertilizers added and without fertilizers added. It has been established that the effect of preliminary magnetization of technogenic soil has a significant effect on lawn grass germination and the length of onion feathers, which are more than twice the height when exposed to the RMF, as compared with DMF. The effect of RMF on grass germination was also twice as high for DMF, when fertilizers were added. The DMF magnetization and biohumus helps to increase the grass sprout height by 10–20%. Onion sprouts were higher in two cases: DMF and biohumus; RMF and biochar. The influence of the factor of fertilizer type has a significant effect in 30–40% of cases, whilst at a spread rate of more than 5%, significant chemical activity of biochar negatively affects the germination of both grass and onion.
Źródło:: Journal of Water and Land Development; 2021, 49; 55-62
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Establishing and characterizing a permanent magnet system for the prototype of NISs Kibble balance
Autorzy:: Emira, Sayed
Shaaban, E. R.
Rashad, M. M.
Gelany, Shaker A.
Powiązania:: https://bibliotekanauki.pl/articles/2203366.pdf
Data publikacji:: 2023
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Kibble balance
Planck constant
magnet system
magnetic field
Opis:: The Kibble balance experiment is used to redefine the kilogram as a unit of mass based on the Planck constant. To demonstrate and understand the basic principle of the Kibble balance, the National Institute of Standards (NIS)-Egypt has constructed a prototype Kibble balance that can measure gram-level masses with 0.01% relative uncertainty. Through the construction of this prototype, the challenges can be studied and addressed to overcome the weaknesses of NIS’s prototype. This study presents the design and construction of the prototype Kibble balance. It also focuses on the design and performance of the magnetic system, which is a crucial element of the Kibble balance. Analytical modeling and finite element analysis were used to evaluate and improve the magnet system. Several other aspects were also discussed, including the yoke’s material and enhancing the magnetic profile within the air gap of the magnet system. Over a vertical distance of 30 mm inside the air gap, the magnetic flux density was found to be 0.3 T, and the uniformity was found to be 8 x 10-5.
Źródło:: Metrology and Measurement Systems; 2023, 30, 1; 3--16
0860-8229
Pojawia się w:: Metrology and Measurement Systems
Dostawca treści:: Biblioteka Nauki

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