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Wyszukujesz frazę "analiza pigmentów" wg kryterium: Wszystkie pola


Wyświetlanie 1-5 z 5
Tytuł:
Analiza pigmentów i spoiw warstw malarskich obrazów Rembrandta van Rijn "Uczony przy pulpicie" i "Dziewczyna w ramie obrazu" ze zbiorów Zamku Królewskiego w Warszawie
AN ANALYSIS OF THE PIGMENTS ANI) HINDERS OF THE PAINT LAYERS OF TWO PAINTINGS RY REMBRANDT VAN RIJN, THE SCHOLAR AT THE LECTERN AND THE GIRL IMA PICTURE FRAME, FROM THE COLLECTIONS OF THE ROYAL CASTLE IN WARSAW
Autorzy:
Nowicka, Anna
Zadrożna, Irmina
Powiązania:
https://bibliotekanauki.pl/articles/536322.pdf
Data publikacji:
2010
Wydawca:
Narodowy Instytut Dziedzictwa
Tematy:
"Uczony przy pulpicie"
"Dziewczyna w ramie obrazu"
zbiory Zamku Królewskiego w Warszawie
obrazy Rembrandta
Rembrandt
analiza pigmentów i spoiw warstw malarskich
badania warstw malarskich
Opis:
From 2004 until 2000 in the Painting Conservation Study of the Royal Castle in Warsaw, the conservation of two tronie portraits The Scholar at the Lectern and The Girl in a Picture Frame, which are ascribed to Rembrandt and signed bv his name, date of creation: 1641, was performed. The paintings, which had belonged to the Lanckororiscy Family, were gifted to the Royal Castle in Warsaw in 1994 by Karolina Lanckororiska, together with other historic assets from her family collection. Before then, both works had been regarded as lost since World War II. This gave rise to doubts concerning their attribution, particularly with regard to the portrait of the woman. As a result, it was decided that comprehensive research work should be undertaken. The conservation works involved, among others, analyses of the paint layers and priming paints of both paintings, the results of which are discussed iti this publication. The analyses of the pigments and fillers, stratigraphie sections of samples, microscopic photographs and the interpretation of SEM-EDS spectrums were performed by mgr Anna Nowicka (Faculty of Conservation and Restoration of Works of Art of the Academy of Fine Arts in Warsaw), the instrumental examinations of binders were performed by dr Irmina Zadrożna (Faculty of Conservation and Restoration of Works of Art of the Academy of Fine Arts in Warsaw, the Faculty of Chemistry of the Warsaw University of Technology), while the SEM- -FDS (scanning electron microscopy with energy' dispersive system) tests were performed by mgr Marek Wróbel (Institute of Hydrogeology and Engineering Geology of tht‘ Warsaw University). The analysis of the binders was carried out using the gas chromatography-mass spectrometry (GC-MS) method, with the Fourier Transform Infrared Spectroscopy (FI 1R) analysis as a supplementary technology. Flit" main difficulty connected with the interpretation of the results obtained was the fact that faces in both paintings, but especially in the portrait of the woman, had been covered with numerous repaints dating back to the 18th and 19th centuries, or even, perhaps, to the 17th century. On the basis of th«; tests, it was discovered that the board on which The Scholar at the Lectern was created had been covered with a thin layer of priming paint, which contained a preponderance of white lead and a tiny amount of calcium carbonate. The binder of the priming ground was gluten glue to which nut oil had been added. A layer of weak yellow- brown imprimitura was applied onto the priming paint. The following pigments were found in the painting: white lead, lead-tin yellow, ferrite yellow, smalt, green earth, malachite, boneblack, bituminous bronze, iron oxide red, organic red, and chalk. The binder of the paint layers was nut oil. The painting The Girl in a Picture Frume was painted on the priming paint, applied in two layers; the first thicker layer contained chalk as a filler, whereas the second, thinner layer consisted mainly of white lead, with a tiny amount of chalk. In both layers, an emulsion binder, prepared on the basis of gluten glue and an unidentified oil, was used. The layer containing white lead is fatter. The painting was painted using the following pigments: white lead, ferrite yellow, green earth, boneblack, bituminous bronze, vermilion or cinnabar of natural origin, organic red, and chalk. The presence of nut oil and linseed oil was found. No remaining traces of the original varnish was found on faces of either painting. I ht; aforementioned analyses helped to obtain important information that, iu combination with the results of research work carried out by art historians and conservators, led to the formulation of the final conclusions confirming Rembrandt’s authorship in the case of both portraits.
Źródło:
Ochrona Zabytków; 2009, 3; 5-13
0029-8247
Pojawia się w:
Ochrona Zabytków
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Możliwości zastosowania pigmentów w przygotowaniu zgładów jednostronnych do analizy obrazu struktury gleby
Possibilities to use pigments during one-sided microsection preparation for soil structure image analysis
Autorzy:
Głąb, T.
Powiązania:
https://bibliotekanauki.pl/articles/289649.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Inżynierii Rolniczej
Tematy:
struktura gleby
zgłady jednostronne
analiza obrazu
pigment
soil structure
one-sided microsections
image analysis
pigments
Opis:
Celem niniejszej pracy jest porównanie trzech barwników wykorzystanych do barwienia żywicy używanej do utrwalania próbek gleby, pobranych z doświadczenia polowego. Barwienie preparatu miało za zadanie zwiększenie kontrastu pomiędzy fazą stałą gleby a wolnymi porami, co ułatwiłoby detekcję progów binaryzacji. Do barwienia wykorzystano barwnik biały, czarny i fluorescencyjny. Dla uzyskanych obrazów wykonano histogramy przedstawiające liczebność pikseli dla skali szarości. Na podstawie tych danych obliczony został wskaźnik kształtu histogramu przyjmujący wartości w przedziale 0-1. Wyższa wartość wskaźnika wskazuje na możliwości łatwiejszego i dokładniejszego wykonania binaryzacji, co jest istotne przy porównaniu wpływ czynnika trakcyjnego na ugniatanie gleby. Porównując zastosowane pigmenty można stwierdzić, iż białe i czarne zabarwienie żywicy nie spowodowało istotnych zmian w przebiegu histogramu. Natomiast barwnik fluorescencyjny spowodował korzystanie zmianę polegającą na silniejszym zaznaczeniu maksimów histogramu, ich większym oddaleniu oraz wyraźnymi szerokim minimum co w sposób istotny ułatwia binaryzację obrazu struktur glebowych.
The purpose of this study is to compare three dyes used to colour resin applied to strengthen soil samples taken from field experiment. Preparation coloring was aimed to increase contrast between soil solid phase and free pores, which would facilitate decimal-to-binary conversion threshold detection. white black and fluorescent dyes were used for coloring. Histograms showing pixel number for grayness scale were prepared for obtained images. This data provided the basis to compute the histogram shape factor, which value ranged from 0 to 1. Higher index value indicates possibility to execute decimal-to-binary conversion more easily and precisely, which is important w lien comparing traction factor effect on soil kneading.
Źródło:
Inżynieria Rolnicza; 2005, R. 9, nr 10, 10; 99-105
1429-7264
Pojawia się w:
Inżynieria Rolnicza
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Czerwone laki w malarstwie śląskim Mistrza lat 1486/1487
Red Lake in Silesian Paintings by the Master from 1486/1487
Autorzy:
Olszewska-Świtlik, Justyna
Nowik, Witold
Powiązania:
https://bibliotekanauki.pl/articles/538097.pdf
Data publikacji:
2001
Wydawca:
Narodowy Instytut Dziedzictwa
Tematy:
czerwone laki
malarstwo śląskie
Mistrz lat 1486/1487
kościół w Strzegomiu
ołtarz ze Strzegomia
badania czerwonych barwników
analiza barwników
analiza pigmentów
rodzaje czerwonego barwnika organicznego
marzanna barwierska
Opis:
The article presents a precise definition of the types of red lake and methods of their analysis. The organic dye was examined with the help of highly efficient liquid chromatography combined with spectrometry in ultra violet and visible light (HPLC–DAD). The substrate was identified predominantly with the application of instrumental methods: X-ray fluorescence (XRF) and energy dispersion X-ray analysis using an electronic micro–probe (SEM-EDS). The samples originated from paintings ascribed to a Silesian workshop, which in 1486–1487 executed a retable for the church of St. Peter and Paul in Strzegom. The anonymous author was given the name of Master from 1486/1487. For the sake of comparison the research also included samples from The Offering of Christ in the Temple, a work by the Nürnberg–based artist H. Pleydenwurff from the former retable in the church of St. Elizabeth in Wroc³aw, dated as 1462. The outcome of the investigations supplement knowledge concerning the type of material used in mediaeval Silesian painting, and constitutes a source of information useful for a future and more precise distinction of the individual features of Polish and European workshops of the period.
Źródło:
Ochrona Zabytków; 2001, 1; 36-48
0029-8247
Pojawia się w:
Ochrona Zabytków
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zastosowanie metody chromatografii cienkowarstwowej do oznaczania pigmentów nieorganicznych
THE USE OF THIN LAYER CHROMATOGRAPHY IN THE DETERMINATION OF INORGANIC PIGMENTS
Autorzy:
Wróbel, Ewa
Powiązania:
https://bibliotekanauki.pl/articles/535976.pdf
Data publikacji:
1981
Wydawca:
Narodowy Instytut Dziedzictwa
Tematy:
chromatografia cienkowarstwowa
oznaczanie pigmentów nieorganicznych
identyfikacja pigmentów
Thin-Layer Chromatography
TLC
rodzaje chromatografii cienkowarstwowej
analiza kationów
metody identyfikacji kationów
identyfikacja anionów wchodzących w skład pigmentów
metody oznaczania anionów
Opis:
It was in 1978 that a scientific and research laboratory of the State Enterprise for Monuments Conservation in Warsaw used — for the first time — thin layer chromatography to identify inorganic pigments. Basing on comprehensive literature on the analysis of inorganic ions by means of thin layer chromatography (TLC) nearly 50 methods of the determination of simple ions and their combinations were studied, partially restricting the task to methods of distribution on the most popular carriers. 15 cations entering into the composition of 28 pigments and 1 2 anions entering into the composition of 20 pigments were identidfied. To give all results of the examinations set up in more than 2 0 big tables would exceed the framework of this article. Therefore some details of the examined methods of distribution have been quoted and briefly discussed as representative. When working out methods of the distribution of individual ions or their groups standard pigments and — for comparison purposes — standard salts available in the laboratory were used. Both pigments and standard salts were prepared for spreading on plates by means of proper solvents. Most frequently it was a diluted or concentrated acid and only occasionally a flux or a diluted base. Pigment solutions were prepared and their concentration did not exceed a few per cent (usually 1 per cent solution was employed). Solutions of the examined pigments or corresponding standard salts were spread on plates covered with a layer of a carrier. As a rule Merck’s plates with silicone gel (Kieselgel 60 F22) and a carrier layer (0.25 mm thick) cut from the plates of 20 X 20 cm down to 4 X 9 cm or Merck’s plates with a cellulose carrier (Cellulose F) of 0 .1 mm in thickness and also cut down to 4 x 9 cm were used. Before spreading standards, plates with cellulose were activated in a dryer at 105° С for 10 minÿ plates with silicone gel were activated at 110° С for 1 hour. Standards were spread on plates by means of capillaries, the diameter of which was 0.5 mm. The plates were numbered and then developed in small chromatographic cells (5x3x11 cm) saturated with vapours of the developing system. After developing a chromatogram, the plates were dried in a dryer and developed by spraying with special reagents. Developed chromatograms were photographesd with a Polaroid camera. The obtained results of the studies make it possible to introduce the analysis of pigments by means of thin layer chromatography as a method supplementary to other traditional methods of determination, particularly when only a small quantity of the sample is available and it is composed of several pigments and their determination by traditional methods is impossible.
Źródło:
Ochrona Zabytków; 1981, 3-4; 188-196
0029-8247
Pojawia się w:
Ochrona Zabytków
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Odkrycie obrazu Ecce Homo z XVII wieku
THE REVEALING OF A PAINTING ”ECCE HOMO” DATING FROM THE 17-TH CENTURY
Autorzy:
Niedzielska, Maria
Powiązania:
https://bibliotekanauki.pl/articles/535776.pdf
Data publikacji:
1975
Wydawca:
Narodowy Instytut Dziedzictwa
Tematy:
vwraikon
Ecce Homo
Chrystus Boleściwy
identyfikacja pigmentów
analiza techniczna obrazu
przemalowanie obrazu
Opis:
The author of the present report was in 1973 entrusted with the restoration of a nineteenth-century painting on the front surface of which is shown the image of the Man of Sorrows (,,Ecce Homo” ) whereas on that rear an earlier painted Veraikon. In the course of restoration from beneath of the front painted layer another figure of the Man of Sorrows apearod, this one, however, dating from the 17th century. With the restorer’s examination has been covered the panel, the ground layer, the pigments and the binder. The nineteenth- -century overpaintings were chemically removed by the use of N,N-dimethyl formamide and, finally, the surface was cleaned mechanically. . The above described examination and cioaning made it possible to establish the teclmiques applied for execution and to determine the time at which the painting was produced that, among the others, could be defined basing on the diagonally planned artistic composition of painting, the composition of its ground layer (bolus with calcium carbonate admixture) and also that of the oil-resin binder. Artistic analysis has proved that the style of composition is one that can be found in paintings of similar kind coming from the period covering the 16th and 17th centuries ; however, the painting under discussion is one belonging to a group of those smaller in their size representations of Ecce Homo and, according to every probability, was painted by an artist from the North- -European circles active in Baroque period.
Źródło:
Ochrona Zabytków; 1975, 1; 55-61
0029-8247
Pojawia się w:
Ochrona Zabytków
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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