Publikační činnost akademických pracovníků FR / FR Research Outputs
Permanentní URI k tomuto záznamuhttps://hdl.handle.net/10195/61749
Procházet
14 výsledky
Search Results
Článekpeer-reviewedpostprint Omezený přístup Characteristic damage and restoration of translucent paper demonstrated on case studies(2023) Machačko, Luboš; Sejkorová Kašparová, Věra; Zadinová, Kateřina; Sánchez, Marta Soliva; Sotiropoulou, MantoThis article focuses on the long-term experience and restoration of translucent archival supports and tracing cloth. The Studio of Restoration and Conservation of Artworks on Paper, belonging to the Faculty of Restoration, at the University of Pardubice, has cooperated with The State Regional Archives of Litomerice, the State District Archives in the town of Most for many years. Over 15 years ago, we started working on the restoration of translucent supports from the archives collection. In the course of that time, we have developed our restoration methods to treat those unique materials. The information and experience collected throughout the years should help increase the awareness of the issues in the restoration of translucent supports.Konferenční objektpeer-reviewedpublished Omezený přístup Re-restoration of the sgraffito facades of the Entrance Tower of the Litomyšl Chateau(Univerzita Pardubice, 2022) Vojtěchovský, Jan; Vojtěchovský, JanThe paper is devoted to the presentation of the sgraffito decoration the Entrance Tower of the Litomyšl Chateau. The sgraffito dates back to the 1730s and is a curious example of this technique at a time when it was already out of fashion. The façade underwent a rich development in different periods of time, which usually did not respect not only the sgraffito itself, but also the formal structure of the façade. Several waves of restoration of the façade subsequently took place in the 20th century, with the most complex being carried out in the late 1970s and early 1980s. This intervention set a completely new perception of the façade, combining the original elements of the façade with a visually very different Baroque reconstruction and completely new additions in the style of the original. The text reflects on the appropriateness of this approach and its defensibility in the context of generally accepted conservation conventions (e.g. the Venice Charter), both then and now. The text also presents the restoration intervention on the sgraffito decoration of the Entrance Tower of the Litomyšl Chateau from 2014-2015, during which findings from the history and development of the facades in question were collected. The paper explains why the concept from the late 1970s and early 1980s was more or less respected during the latest intervention.Konferenční objektpeer-reviewedpublished Omezený přístup Strech-Press Method. An innovative technique of injection and pressing of detached plasters(Univerzita Pardubice, 2022) Wichterlová, Zuzana; Vojtěchovský, JanMany Renaissance sgraffito facades in the Czech Republic were uncovered and rediscovered during the last century. After removal of the secondary layers, the main problem appeared to be the condition of the original plasters, namely their poor adhesion, often connected with bad cohesion of the first coat. In the past, restorers used different approaches to that but over time, most of the steps proved to be unsuccessful or even destroying for the original plaster. Since 1997, we have restored many sgraffito facades. On all of them, we have dealt with similar problems of detached plasters connected with unsuitable or insufficient interventions of previous restorers. We had to search for some new approaches for in-depth consolidation of plasters, filling of gaps with a grouting material and pressing the plaster back to the wall. In the contribution, an innovative technique of pressing of detached plasters during injection (“Stretch-Press Method”) is described.Článekpeer-reviewedpublished version Omezený přístup A BRONZE BROOCH CASTING MOULD IN EASTERN BOHEMIA FROM THE PERIOD OF THE MARCOMANNIC WARS(Romisch-germanisches zentralmuseum, 2020) Vich, David; Kmošek, JiříA half of a mould made from an alloy of copper, tin, zinc and a considerable percentage of lead intended for the production of brooches of Type Almgren 132 was discovered at a Germanic settlement in the cadastral area of Koci, Eastern Bohemia, dated by other finds to the period of the Marcomannic Wars. Finds of production waste indicate that non-ferrous metals were worked there some time around the Marcomannic Wars. Brooches of Type Almgren 132 have been very rarely documented from the territory of Bohemia and Moravia. J. Tejral points out the specific situation in the Central Danube region after Commodus had made peace with the Germans, as we encounter an intensive inflow of Roman imports into the East Germanic milieu while products of East Germanic origin also appear there. J. Tejral explains this situation in the rise of specific conditions for mutual cultural exchange, in which the hinterland of Noricum and Pannonia held an extraordinary position. The territorial impact of these manifestations was probably much greater than it has seemed so far, however.Konferenční objektpeer-reviewedpublished version Omezený přístup An overall examination of the portrait of Maria Theresa from the collection of Jaroměřice nad Rokytnou Chateau(Univerzita Pardubice, 2020) Machačko, Luboš; Háková, JanaThe important collection of baroque portraits, the so called Questenberg collection, at Jaroměřice nad Rokytnou Chateau in the Czech Republic is subject to conservation as well as a complex scientific investigation includ- ing a detailed material analysis. The portrait of Maria Theresa, one of many versions of Martin van Meytens’ portrait of the Holy Roman Empress Ma- ria Theresa, which was proliferated relatively soon after her father’s death, was one of the first paintings to be examined in detail and then restored. The condition of the painting, extent of damage, painting technique and type of materials used were identified by non-invasive (visible light – diffused/sharp oblique/translucent – photography, ultraviolet induced flu- orescence photography, infrared reflectography, X-ray radiography, X-ray fluorescence spectroscopy) and invasive techniques (optical microscopy, scanning electron microscopy, Fourier-transform infrared spectroscopy). Considerable changes to the composition during the execution of the por- trait was one of the most interesting findings as well as the identification of greasy tempera as a part of the painting technique, and identification of cotton fibres in the canvas. All of the above and much more recent infor- mation about the painting examined can be found in the following article.Článekpeer-reviewedpublished version Omezený přístup Tracking Alpine copper-analysis of Late Bronze Age copper ingot hoard from South Bohemia(Springer, 2020) Kmošek, Jiří; Erban Kochergina, Yulia V; Chvojka, Ondrej; Fikrle, MarekWe present the results of a complex archaeometric study of Late Bronze Age copper ingots from the Stare Hodejovice hoard (South Bohemia). In order to understand the origin of the copper and describe the metallurgical process, we use modern analytical methods (metallography analyses, major/trace element and lead isotope analyses) to describe the samples. Within this study, a representative dataset of trace element composition and lead isotope ratios of non-alloyed and non-recycled corpus of copper ingots from the Late Bronze Age was created. We assume that most of the ingots were not altered by alloying, mixing or recycling. Based on lead isotope ratios and major/trace element composition, we suppose that the origin of the copper could be mostly Alpine ores from the Trentino and Mitterberg regions and possibly the Valais region. By this study, it was proved that copper smelted by a matte smelting process was transported in the form of flat or plano-convex ingots from multiple sources to South Bohemia, where it was subsequently refined and alloyed. Obtained analytical results refute the idea of prevailing copper recycling in the Late Bronze Age.Konferenční objektpeer-reviewedpublished version Omezený přístup Restoration of the Gothic Tomb of Ernest of Pardubice in Klodzko, Poland(Univerzita Pardubice, 2020) Ďoubal, Jakub; Bayer, Karol; Zítková, PetraThe tomb of Arnošt of Pardubice is found in the parish church of the Assumption of the Most Holy Virgin Mary in Kłodzko, Poland. Arnošt of Pardubice († 1364) was the first Archbishop of Prague as well as the leading adviser and diplomat to Charles IV. He spent his childhood in Kłodzko, where he also wished to be buried. His tomb represents an outstanding example of sculptural art of the 14th century. Most authors associate the tomb with the Prague workshop of Petr Parléř. The condition of the monument before restoration was highly unsatisfactory. The tomb was damaged several times in the past by Hussite raids and fires within the church, leaving it in a misaligned state. Damage and unprofessional repairs disrupted its appearance and threatened its material basis. The tomb effigy was broken into several parts and the fragments were scattered around the tomb chest, which resulted in the loss of many valuable parts of the sculpture. The project to restore the tomb began in 2016, when the Faculty of Restoration at the University of Pardubice carried out research and began dismantling and securing fragments of the effigy. In 2017, the project continued with the restoration of the limestone tomb chest. It was discovered that during the tomb’s transfer at the end of the 19th century, it was shortened and incorrectly reassembled. For this reason, the tomb chest was completely dismantled and reassembled in a new representative site and in its original size. After the effigy was placed on the tomb chest, it became possible to find several of the larger fragments which had been separated from the effigy for several centuries or were considered lost. Thanks to this, the whole composition and sculpting of this magnificent Gothic artwork became much more legible. Modern technologies and restoration techniques (such as laser cleaning and the reversible bonding of fragments using a combination of two gluing methods) were used for the restoration and survey. It was crucial to conduct a discussion on conceptual approaches to the restoration, one which confronted contrasting views on the resulting presentation of the work based on different cultural environments and traditions of monument care. From the restoration point of view, this was a very interesting and complicated task dealing with the incomplete character of the surviving sculpture and preserving the authenticity of this remarkable monument.Článekpeer-reviewedpostprint Omezený přístup Works of Art, Produced from Concrete, Installed in Public Spaces from the 1950's to the 1980's in the former Czechoslovakia - Technologies and Surveys(Polish Mineral Engineering Society, 2018) Červinka, JosefThe article discusses techniques applied to artworks created from concrete in the period from 1950 until 1989. The aim of submitted text is to broaden view on the surveyed objects as to their future repairs and restoration. In addition, the paper wishes to draw attention to topical issues of heritage preservation. The introduction highlights technological questions related to terminology. Surveys, characterizing a specific type of use of concrete material, including detected damage indicators, are introduced on examples of the selected concrete objects. The article follows topographic and archive survey of the mentioned artwork fund.Článekpeer-reviewedpostprint Omezený přístup Restoration of selected painted scenes on the vault of st. Wenceslas’ chapel In the church of the assumption of st. Virgin Mary in Klokoty(2017) Škrabalová, AdélaThe article presents the process of restoration of two wall paintings from the beginning of the 18th century, which are situated on the vault and the victory arch, as well as the inscriptions associated with them in St. Wenceslas’ Chapel of the Church of the Assumption of the Virgin Mary in Klokoty near Tábor. The selected parts with the motifs of St. Wenceslas sowing, harvesting and threshing grain and Flogging of Christ are part of the wall painting on the ceiling which includes seven scenes form the life of St. Wenceslas. Other seven paintings on the victory arch depict The Passion of the Christ Cycle, a part of a larger iconographic concept devoted to St. Mary carried out within the whole area of the church. The paper includes basic information about the artwork, the description of the condition before and after the restoration treatment, the plan of restoration works as well as the individual steps of the restoration process, which was designed individually for each artwork.Konferenční objektpeer-reviewedpostprint Omezený přístup New Shading Technique Revealed through Reconstructing the Sgraffito Technology used North of the Alps during the Renaissance(Michael Imhof Verlag, 2017) Wichterlová, Zuzana; Válek, Jan; Skružná, OlgaResearch focusing on the 16th century original Renaissance sgraffito techniques has been in progress since 2012. It aims to specify the techniques utilized by sgraffito makers and to provide an evidence for the process by scientific methods. Primarily, the research concentrates on the area of South Bohemia. Non-invasive visual observation and documentation under the raking light illumination formed the basis of the investigation, complemented with laboratory material analysis. Based on the investigation, some characteristic features of Renaissance sgraffito were identified in the surveyed area and it led to a description of two specific methods of shading – coloured with a brush and smoothened by a trowel, so-called ‘trowel shading’. Both techniques work with middle grey tones and this visually interconnects sgraffito with monochromatic chiaroscuro painting. Detailed analysis carried out on two selected shaded sgraffiti from towns of Telč and Slavonice characterised the used raw materials, mixing ratios, and character and thickness of individual layers. Based on the analysis, local sources of materials were identified and subsequently, material copies were prepared with the aid of knowledge concerning historic lime production and processing technologies. The replicated mortar mixtures were evaluated on trial panels (workability, application methods, various surface finishes, setting and hardening, duration of time breaks between individual layers and/or scratching). The practical trials proved the connection between properties of the used materials (that predefined the use of the artistic technique including the ‘trowel shading’) and the final appearance of sgraffito decorations. Materials and technological copies facilitated a reconstruction of the Renaissance sgraffito technique originally used in the surveyed region and the newly gained knowledge and skills were subsequently used to restore a sgraffito façade in Slavonice.