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Utjecaj abraziva za pjeskarenje na površine obojenih metala
Get PDFOvaj diplomski rad istražuje utjecaj abraziva u procesu pjeskarenja na površine različitih metala: aluminija, bakra, bronce, mjedi, cinka, kositra i olova. Korišteni su nekorodirani metali i isti metali korodirani u trima vodenim otopinama: natrijevog klorida, klorovodične kiseline i natrijevog metabisulfita, tako da kao produkti korozije nastaju kloridne i sulfatne soli. Abrazivi korišteni u ovom istraživanju su: orahova ljuska, soda bikarbona, staklene kuglice, kvarcni pijesak, korund i sačma. Pjeskarenje se vrši u konstantnim uvjetima: udaljenost između mlaznice i uzorka je jednaka za sve metale, a uzorci su pjeskareni pod kutom od 45°, pod tlakom 1 i 5 bara. Površine pjeskarenih uzoraka analizirane su vizualnim pregledom i pod digitalnim mikroskopom. Cilj istraživanja je utvrditi kakav učinak abrazivi imaju na površine obojenih metala kako bi se, s obzirom na svojstva abraziva i metala, olakšao optimalan odabir za buduće konzervatorsko-restauratorske zahvate.This thesis represents an effect of abrasive blast cleaning media on suraces of different metals: aluminum, copper, bronze, brass, zinc, tin and lead. The afore mentioned metals were used in both non-corroded and corroded forms. The corrosion was conducted in three different water solutions: sodium chloride, hydrochloric acid and sodium metabisulphite the products of which were chloride and sulphate salts. The abrasive media used were: walnut shell, sodium bicarbonate, glass beads, ceramic beads, silica sand, corundum and steel grit. The enviroment during the blasting process was kept constant: the distance and the angle (45°) between the nozzle and the metal surface and the blasting pressure (1 and 5 bar). The blast cleaned surfaces were then visually inspected with the naked eye and under a digital microscope. The objective of this research was to determine the effect of blast media on the surfaces of non-ferrous metals respective to the properties of both the abrasive media and the metals with a view to facilitating the selection of the best blasting media in future conservation treatments
KULTURNA HVARSKA LJETA OD 1957. DO 1985. – FESTIVAL DRAMSKIH AMATERA JUGOSLAVIJE I HVARSKE LJETNE PRIREDBE
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Vincent van Gogh's self-portraits
No full textVincent van Gogh je nizozemski slikar 19. stoljeća. U svojoj kratkoj slikarskoj karijeri naslikao je stotine slika među kojima je 37 autoportreta. Svoj prvi autoportret naslikao je nakon dolaska u Pariz koji je u to vrijeme bio centar europske umjetnosti. Prvi autoportret naslikao pod utjecajem nizozemskog tradicionalnog baroknog slikarstva, a kasnije upijajući ideje impresionista i postimpresionista razvija svoj vlastiti stil. Njegov slikarski rukopis koji karakterizira debeli impasto nanos boje jedan je od najposebnijih rukopisa u povijesti umjetnosti. U svome radu ne boji se eksperimentirati s različitim stilovima i pravcima koje prilagođava svom pogledu na slikarstvo. Na Vincenta van Gogha utjecala je i japanska grafika, koja ga je očarala svojim bojama i plošnošću. Kroz njegova djela pratimo njegov slikarski razvoj, ali i razvoj njegove duševne bolesti. Vincent van Gogh bio je neshvaćen od svoje okoline, teško je stjecao prijatelje a priznanje za svoj rad dobio je tek nakon smrti.Vincent van Gogh was a 19th centuryDutch painter. In his short painting career, he painted a hundred pictures, including 37 self – portraits. He painted his first self- portrait after his arrival in Pari, which was the center od Europen atz in that time. His first self – portrait was painted by the in influence of Dutch traditional Baroque painting, and later he absorbed the idea of Impressionists and Postimpressionists, developing his own style. His pictorial handwriting, characterized by a thick impregnation of paint, freely dancing on canvas, is one of the most special manuscripts in the history of art. In his work, he was not afraid to experiment with different styles and directions that adjust his painting view. Vincent van Gogh was inflenced by Japanese graphics that impressed him with colors and flattery. Through his works we can follow his pictorial development, but also the development of his mental illness. Vincent van Gogh was misunderstood by other people, he hardly made friends, and recognition for his work came after his death. He was described as a scapegrece, dangler, and a mentally ill pereson
Konzervacija i restauracija antičkog kovanog novca s lokaliteta Ivandvor i Park kraljice Katarine Kosača
Get PDFU ovom diplomskom radu predmet je istraživanja kovani novac s nekadašnjeg područja antičke Panonije. 41 kovanica s dva lokaliteta (Ivandvor i Park kraljice Katarine Kosača) pronađena je tijekom terenskih istraživanja Odsjeka za arheologiju Hrvatske akademije znanosti i umjetnosti. Umjetničkoj akademiji u Splitu povjerene su 2015. godine kako bi se nad njima izvršio konzervatorsko-restauratorski zahvat. S ciljem da se što bolje objasni sveobuhvatna vrijednost ovih kovanica, diplomski je rad podijeljen na povijesnu i stručnu cjelinu. Nakon definicije novca i tematike koja se bavi iskonskom trgovinom u vidu razmjene dobara, sažeto je opisan povijesni razvoj metala odlikovanih različim svojstvima u službi izrade predmeta za svakodnevnu upotrebu. Toj dio rada obuhvaća i slijed širenja prvih kovanica te njihovu adaptaciju kulturama svijeta. Nastavlja se razvojnim fazama novčanog sustava antičkog Rima, a završava identifikacijom pronađenih kovanica. Osnovne značajke tehnologije kojom su se koristili rimski kovači uvod je u samu konzervaciju i restauraciju pronađenih kovanica. Dio o konzervatorsko-restauratorskom zahvatu podijeljen je u nekoliko poglavlja koji opisuju zatečeno stanje, uklanjanje znakova propadanja te stabilizaciju i konsolidaciju kovanica. Rad je priveden kraju uz prijedlog za pohranu i izlaganje te sadrži prilog s fotografijama kovanica u zatečenom stanju kao i nakon konzervatorsko-restauratorskog zahvata.The subject matter of this graduate thesis are coins that were found on the area of former ancient Pannonia. During the field research conducted by the Department of Archeology at the Croatian Academy of Sciences and Arts, 41 pieces of ancient coinage were found on two localities (Ivandvor and Queen Katarina Kosača Park). The coins were entrusted to the Split Academy of Fine Arts in the year 2015 so as to be subjected to conservation-restoration treatment. The graduate thesis is divided into historical and expert section with the aim of clarifying the overall significance of these coins. Definition of money and the theme on primary trade in terms of barter is followed by a brief description of historical development of diverse metals which were used for manufacturing everyday items. The latter section demonstrates the way in which coins were spread as well as adapted to the cultures of the world. What follows are development stages in monetary system of ancient Rome. The section ends with identification of discovered coins. Fundamental characteristics of techniques used by roman blacksmiths serves as an introduction into the section on conservation and restoration of the coinage. This last section is divided into several chapters that describe the existing condition, removal of indication of decay, and also stabilization and consolidation of coins. In conclusion, proposal for storage and public display is added. Appendix containing photographs of coins in existing condition and those after conservation-restoration treatment is included
