Analizirali smo vzorce steklenih posod in okenskega stekla s poznoantične utrdbe Korinjski hrib pri Velikem Korinju. Steklene najdbe s tega najdišča, datiranega v 6. st., kažejo značilen, vendar ...omejen spekter posod, predvsem kozarce brez noge, kozarce na nogi in okensko steklo. Rezultati arheometričnih analiz so pokazali nepričakovane sredozemske sestave steklenih mas, ki nakazujejo, da je bilo najdišče lahko vpeto v bizantinsko trgovsko mrežo ali sistem vojaške oskrbe.
S kombinirano metodo protonsko vzbujenih rentgenskih žarkov in žarkov gama (PIXE, PIGE) smo analizirali steklene jagode in nekaj drugih kosov stekla z zgodnjesrednjeveških najdišč v Sloveniji. Z ...analizo, ki je zajela 179 vzorcev s 25 najdišč, smo dokazali dve vrsti stekla, natronsko in halofitsko. Razlikujeta se po uporabljenem talilu, ki je bilo ali natron, zmes natrijevega karbonata in bikarbonata, ali pepel halofitov, obmorskih slanoljubnih rastlin. Natronsko steklo je bilo narejeno skladno z rimskim izročilom, halofitsko steklo je vzhodnega izvora in se je pojavilo na zgodnjesrednjeveških najdiščih v Evropi v drugi polovici 8. st. V Sloveniji je bilo halofitsko steklo ugotovljeno na 18 najdiščih, iz njega so narejene mozaične, členaste in enojne jagode. Njihov pojav je pomembno dejstvo za datacijo arheoloških najdb, predvsem nakita iz starejšega zgodnjesrednjeveškega obdobja. Predlagana zgodnja datacija za nekatere grobove s takšnim nakitom se tako premika v drugo polovico 8. in v 9. st. Jagode iz halofitskega stekla so pogoste tudi v grobovih s pridanimi keramičnimi lonci, posamezne pa so znane tudi z višinskih najdišč in iz nižinskih naselbin. Najmlajše jagode iz halofitskega stekla so našli skupaj z nakitom t. i. belobrdske kulture (druga polovica 10. in prva polovica 11. st.).
To explore the effect of pulse duration on the micro-morphology and mechanical properties of laser-welded glass joints, a glass welding experiment was carried out. The microstructure of the molten ...layer with different pulse durations was shown by field-emission scanning electron microscopy. The pores and distribution characteristics were analyzed, and the porosity variation rule of the welding layer for different pulse durations was obtained. The line-scan analysis of the joint interface was carried out with a D8-Advance type crystal X-ray diffractometer, and the relationship between the thickness of the reactive wetting layer and the pulse duration was obtained. The hardness and welding strength of the laser-welded glass joints were obtained with a Vickers hardness tester and an electronic universal testing machine. This study can provide a theoretical and experimental basis for the laser welding of glass.
Treatment of the sludge from water-purification plants is becoming more and more urgent due to the inability to increase its storage area. To avoid CO2 emissions, the use of non-Portland cement ...binders is recommended. The application of geopolymerization of waste sludge (WS) from water-purification plants is a novel solution. Curing conditions including high temperature, pressure or microwaves enhance the formation of geopolymer bonds. This paper presents the results of a research on the treatment of the WS of the Thu Duc water-purification plant (Vietnam) with the geopolymerization method. Solid phases were prepared by mixing the WS and fly ash (FA). The FA proportions of the solid phases were (10, 40, 70) w/%. The alkali-activated solution (AAS) was a mixture of a 40 w/% NaOH 6M solution and 60 w/% water glass (WG: Na2O.nSiO2 with n = 1.75 and volumetric density r = 1.40 kg/L). The geopolymer materials were mixtures containing an 80 w/% solid phase and a 20 w/% liquid phase of the AAS. Geopolymer samples were formed in a cylindrical steel mold with a diameter of 10 mm at a high pressure. The samples were cured in a 112 W microwave oven for 30 s or in a dryer at 110 °C for 24 h. The compressive strength and volumetric density of both sample groups were determined and compared to each other. The formation of geopolymer bonds was investigated using XRD, FTIR and SEM.
Pigments and binders for obtaining radiation-resistant thermal-control coatings (TCC) for spacecraft were studied. A radiation-resistant thermal-control coating was obtained on the basis of the ...chosen components. The 15-year resistance of the coating in a geostationary orbit (GSO) was evaluated on the basis of ground-based tests. The comparative characteristics of white TCC (based on BaSO
4
), which are currently the most widely used coatings in Russia, are presented.
The monograph Roman Glass of Slovenia, differs only in minor details from the doctoral dissertation of the author. The first part is dedicated to the typological and chronological presentation of the ...Roman glass (1st–5th cent.) from the territory of modern Slovenia~the second one is a presentation and review of local glass production in the Roman period on Slovene territory.
Provider: - Institution: - Data provided by Europeana Collections- Vabilo na odprtje manjše občasne razstave Pokrajinskge muzeja Celje 퐒퐓퐄퐊퐋퐎 퐍퐀 퐂퐄퐋퐉퐒퐊퐄퐌, avtorja Jožeta Rataja.- All metadata ...published by Europeana are available free of restriction under the Creative Commons CC0 1.0 Universal Public Domain Dedication. However, Europeana requests that you actively acknowledge and give attribution to all metadata sources including Europeana
Provider: - Institution: - Data provided by Europeana Collections- Vabilo Pokrajinskega muzeja Celje in Zavod za kulturo, turizem in razvoj ROGATEC na odprtje razstave OD GLAŽUTE DO STEKLARNE – ...Steklo na Rogaškem. Avtor razustave je Jože Rataj (Pokrajinski muzej Celje)- All metadata published by Europeana are available free of restriction under the Creative Commons CC0 1.0 Universal Public Domain Dedication. However, Europeana requests that you actively acknowledge and give attribution to all metadata sources including Europeana
Provider: - Institution: - Data provided by Europeana Collections- Vabilo Pokrajinskega muzeja Celje na odprtje panojske razstave Steklo na Celjskem od 18. stoletja do danes, ki bo v torek, 17. ...aprila 2018, ob 11. uri na Krekovem trgu v Celju.Spremni dogodek ob razstavi Steklo na Celjskem od 18. stoletja do danes, ki je na ogled v Stari grofiji do oktobra 2018. Avtor razstave: Jože Rataj. - All metadata published by Europeana are available free of restriction under the Creative Commons CC0 1.0 Universal Public Domain Dedication. However, Europeana requests that you actively acknowledge and give attribution to all metadata sources including Europeana
Provider: - Institution: - Data provided by Europeana Collections- Vabilo Pokrajinskega muzeja Celje na javno vodstvo po razstavi Steklo na Celjskem od 18. stoletja do danes, ki bo v četrtek, 5. ...aprila 2018, ob 17. uri v Stari grofiji na Muzejskem trgu 1.Steklo na Celjskem od 18. stoletja do danes, je prva pregledna razstava, s katero odstiramo zgodovino steklarstva v naših krajih.Glažutam so sledile steklarne, od katerih delujeta le še steklarni v Hrastniku in Rogaški Slatini. Izdelovale so poleg steklenic za slatino še pivsko posodje, servirno in jedilno posodo ter svetila. Dragocenejše izdelke so krasili z brušenjem, graviranjem in emajlnim poslikavanjem. Izdelki za vsakdanjo rabo pa so bili gladki in strogo funkcionalni.Avtor razstave in kataloga: Jože Rataj. - All metadata published by Europeana are available free of restriction under the Creative Commons CC0 1.0 Universal Public Domain Dedication. However, Europeana requests that you actively acknowledge and give attribution to all metadata sources including Europeana
PDF
