Autor: Molnar, R. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Ordered Structures in a Variable Length A.C. Trap
Autorzy:: Gheorghe, V. N.
Giurgiu, L.
Stoican, O.
Cacicovschi, D.
Molnar, R.
Mihalcea, B.
Powiązania:: https://bibliotekanauki.pl/articles/1968878.pdf
Data publikacji:: 1998-04
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 32.80.Pj
Opis:: A variable length linear trap operating between 20-1000 Hz under standard temperature and pressure conditions is reported. We simulated and observed various kinds of stable patterns: linear strings, planar zig-zag and volume structures. The interparticle distances depend on the trapped particle number and trap length. Our setup allows trapped microparticle diagnosis by various methods.
Źródło:: Acta Physica Polonica A; 1998, 93, 4; 625-629
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Geometric terminology and imagination
Autorzy:: Grebeň, R.
Molnár, J.
Powiązania:: https://bibliotekanauki.pl/articles/121817.pdf
Data publikacji:: 2014
Wydawca:: Uniwersytet Humanistyczno-Przyrodniczy im. Jana Długosza w Częstochowie. Wydawnictwo Uczelniane
Tematy:: geometria
terminologia geometryczna
system edukacji
edukacja matematyczna
szkolnictwo wyższe
geometry
geometric terminology
education system
mathematical education
higher education
Opis:: How do pupils and students understand geometric terminology, symbols and phraseology? Using the same designation for a particular object, feature or link, allows the use of the same “language” to communicate about topics related to these concepts. The fact that everyone will equally understand the same term depends on how well the definitions are introduced. The objective of this article is one of the surveys, which is a part of the research, aimed to contribute to updating the geometric terminology in the Czech education system.
Źródło:: Scientific Issues of Jan Długosz University in Częstochowa. Mathematics; 2014, 19; 37-49
2450-9302
Pojawia się w:: Scientific Issues of Jan Długosz University in Częstochowa. Mathematics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Performance evaluation of strip parquet flooring panels after long-term, in-service exposure
Autorzy:: Nemeth, R.
Molnarne Posh, P.
Molnar, S.
Bak, M.
Powiązania:: https://bibliotekanauki.pl/articles/52744.pdf
Data publikacji:: 2014
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
Tematy:: performance
strip parquet flooring
black locust
steaming
panel
long-term exposure
abrasion resistance
indoor service test
dimensional stabilization
Opis:: Due to its extraordinary hardness, decorative appearance and possible small dimensions, black locust wood is assumed to be an excellent material for strip parquetflooring. The favourable colour changes achieved by controlled steam treatment further increased the utilization potential of this material. Flooring was installed on a student dormitory stair landing in heavy use. Due to the flooring’s very high exposure, 5 years was considered a long enough period to compare the different face layer materials during in-service test. Oil was used as a coating to avoid the remarkable protecting effect of hard film-forming varnishes (acrylic, etc.) against abrasion. Besides the flooring turning grey (all face layers no matter what treatment), only some delamination occurred at certain places after five years in service.The laboratory test results for abrasion resistance, dimensional changes and deformation were analysed. Additionally, the Brinell-Mörath hardness after indoor service and the abrasion due to indoor service were analysed. In terms of abrasion resistance, dimensional changes and deformation, no essential differences werefound between the oil-treated and untreated black locust wood on the one hand, and the control oak specimen on the other. Long-term tests showed that, after 5 years in service, the Brinell-Mörath-hardness decreased considerably for all the testedmaterials. The type of section and the presence of wide rays influenced the roughness and the waviness of the surface after indoor service.
Źródło:: Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2014, 57, 193
1644-3985
Pojawia się w:: Drewno. Prace Naukowe. Doniesienia. Komunikaty
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: The distibution of Elatine hydropiper L. (Elatinaceae)
Autorzy:: Popiela, A.A.
Lysko, A.R.
Wieczorek, A.
Molnar, A.
Powiązania:: https://bibliotekanauki.pl/articles/58970.pdf
Data publikacji:: 2012
Wydawca:: Polskie Towarzystwo Botaniczne
Tematy:: plant distribution
Elatine hydropiper
Elatinaceae
vascular plant
Elatinella
chorology
Isoeto-Nanojuncetea class
Europe
Asia
Opis:: A distribution map of Elatine hydropiper L. (Elatinaceae), which belongs to the Euro-Siberian phytogeographic element, has been prepared based on literature and web-based data. The distribution range of the taxon, comparison to previous maps and reliability of the results are discussed.
Źródło:: Acta Societatis Botanicorum Poloniae; 2012, 81, 2
0001-6977
2083-9480
Pojawia się w:: Acta Societatis Botanicorum Poloniae
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Synergetic use of lignite fly ash and metallurgical converter slag in geopolymer concrete
Autorzy:: Mucsi, G.
Rácz, A.
Molnár, Z.
Szabó, R.
Gombkötö, I.
Debreczeni, A.
Powiązania:: https://bibliotekanauki.pl/articles/88960.pdf
Data publikacji:: 2014
Wydawca:: Politechnika Wrocławska. Wydział Geoinżynierii, Górnictwa i Geologii. Instytut Górnictwa
Tematy:: lignite fly ash
converter slag
geopolymer concrete
Opis:: The application and utilization of the industrial wastes and by-products in the construction industry is a key issue from an environmental and economic point of view. The increased use of lignite has substantially increased the available quantities of lignite fired power plant fly ash, which can be mainly classified as class C fly ash. The utilization of such raw material however has some difficulties. In the present paper lignite fired power station fly ash and metallurgical converter slag were used for the production of geopolymer concrete. The fly ash was used as a geopolymer based binder material, and a converter slag as aggregate, thus created a geopolymer concrete which contains mainly industrial wastes. As preliminary test experimental series were carried out using andesite as aggregate. The optimal aggregate/binder ratio was determined. The effect of the amount of alkaline activator solution in the binder, the aggregate type on the geopolymer concretes compressive strength and density was investigated. Furthermore, the physical properties - freeze-thaw resistance and particle size distribution - of the applied aggregates were measured as well. As a result of the experiments it was found that physical properties of the andesite and converter slag aggregate was close. Therefore andesite can be replaced by converter slag in the concrete mixture. Additionally, geopolymer concrete with nearly 20 MPa compressive strength was produced from class C fly ash and converter slag.
Źródło:: Mining Science; 2014, 21; 43-55
2300-9586
2353-5423
Pojawia się w:: Mining Science
Dostawca treści:: Biblioteka Nauki

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