Showing 17 results for Technology
Hamidreza Bakhshandehfard, Sedighe Taheri,
Volume 1, Issue 1 (4-2017)
Abstract
The objects of the study are two bronze daggers dated back to the late Bronze Age and early Iron Age. They lack any ornaments and there is corrosion and oxidation in their surface. The purpose of this study is to recognize the technological and pathological research on the mentioned objects through comparative and pathological studies and library method, to conduct the technological and pathological research through laboratory method (wet chemistry, radiography, metallography, metal core elemental analysis by Scanning Electron Microscope (SEM), analysis of corrosion by X-ray diffraction (XRD) in order to identify the metal and making techniques and to determine the types of damage, and finally to perform the conservation and restoration of the these objects through the conservation plan.
After studying and conducting experiments mentioned, it was determined that the material of the objects was bronze with carbonate and chloride corrosion. The making methods in these objects is casting and hammering. They were recognized to belong to the Iron Age.
Roqiyeh Movahedi Mehrabad , Reza Vahidzadeh,
Volume 1, Issue 2 (10-2017)
Abstract
The Shah Hamzeh mausoleum, located in the city of Qom, is a monument from the Safavid period. The eastern porch of this monument was decorated blue and white tiles during the Qajar period. The aim of this article is to introduce the historical monument of Shah Hamzeh and its decorations. In this regard, a sample of the blue and white tiles of the monument was technologically examined using library studies, optical and digital microscope methods, and SEM-EDX and XRD methods. Based on the studies conducted, the paint layer was applied directly to the stone body without a preparatory layer, and then a glass layer was applied on it.
The Shah Hamzeh mausoleum, located in the city of Qom, is a monument from the Safavid period. The eastern porch of this monument was decorated blue and white tiles during the Qajar period. The aim of this article is to introduce the historical monument of Shah Hamzeh and its decorations. In this regard, a sample of the blue and white tiles of the monument was technologically examined using library studies, optical and digital microscope methods, and SEM-EDX and XRD methods. Based on the studies conducted, the paint layer was applied directly to the stone body without a preparatory layer, and then a glass layer was applied on it.
Mandana Tayebi ,
Volume 1, Issue 2 (10-2017)
Abstract
Archaeological artifacts represent the cultures and civilizations of the past, carrying invaluable information about daily life, beliefs, technology, and social relations of those times. With advancements in technology, new tools and methods have emerged for examining and analyzing these artifacts, providing new insights into their unknown aspects.Micro-observation emphasizes the systematic and detailed examination of artifacts and the use of innovative techniques, playing a key role in the conservation and restoration of cultural and historical objects. This article reviews various techniques of micro-observation, such as microscopic studies, high-resolution imaging, 3D scanning, and spectroscopy analysis, demonstrating how these technologies contribute to a deeper understanding of the initial conditions of materials and patterns of degradation. Additionally, presented case studies illustrate the successful applications of micro-observation in various fields, highlighting its diversity and effectiveness in addressing specific challenges in the conservation and restoration of fragile and valuable objects.
Mahdieh Shahreki Moghadam , Reza Khanjari Dolatabadi ,
Volume 1, Issue 2 (9-2018)
Abstract
The studied artifact is a stone bowl from the twelfth excavation season at Burnt City, Sistan, between 1997 and 2008, retrieved from trench NFB, burial 8509. Most stone artifacts in the past were made from gypsum alabaster or limestone marble, which are visually similar. Through sampling and thin-section petrography, the results revealed a layered limestone structure containing calcite and aragonite minerals, confirming the bowl’s marble composition. Regarding the manufacturing technology of marble artifacts, evidence of tool marks on the studied bowl suggests the use of tools such as hammers, chisels, drills, gouges, saws, and abrasives in the production of stone vessels.
Alireza Kouchzaei, Mohsen Mohammadi Achachalui ,
Volume 1, Issue 3 (10-2017)
Abstract
Khatam Kari is one of the traditional Iranian arts with a long history, and numerous works of this art have survived from past eras. Considering the limited technical studies on these works, their study plays an important role in better understanding the process of making Khatam in the past. The diversity of Khatam materials and their different reactions to conservation methods have a great impact on adopting the optimal conservation and treatment method. As a result, identifying their constituent materials will be necessary to choose the correct method of dealing with this type of works. Fourier transform infrared spectroscopy (FTIR) is one of the methods that can be used to identify the nature of the organic materials that make up the khatam. Therefore, in this study, the khatam door khatam of the Seyyed Mosque of Isfahan from the Qajar period was examined as a case study. For this purpose, FTIR spectroscopy was used to investigate the structure and identify the materials used in its construction. The results showed that the red-brown and black pieces in this khatam sample are made of wood and the white pieces are made of bone. Also, Animal Glue was used as an adhesive in wrapping the khatam and lining it, and a mixture containing terpenoid resins was used to finish and coat the khatam .
Leila Zarei, Mohsen Mohammadi Achacheloui, Maryam Ahmadi,
Volume 1, Issue 3 (10-2017)
Abstract
Studying and examining Quranic works is of great importance due to their respect and sanctity among Muslims, so that the historical, cultural and religious value of such works doubles the importance of their protection and preservation. The work examined in this study is a Quran scroll sample belonging to the Haj Rahim Mosque in Tabriz. According to field research and statements by the board of trustees of the mosque, this scroll was placed inside the mosque wall at an unknown time as a vow or talisman and was discovered in 1350 AH during the reconstruction of the mosque through the thatched wall. During this study, the paper making technique and ink used in the work were studied. In line with this goal, the type of paper fibers and paper pulp and the inks used in the work, including black, red and gold pigment, and finally the glue used to join the sheets together were examined. All the identifications made in this research were done using chemical methods except for the identification of the type of glue used at the beginning and end of the sheets, which was done using a Fourier transform infrared spectroscopy device. The results indicate the use of linen and rag fibers and polysaccharide starch to prepare the paper and carbon black ink, rosin pigment for the red ink, and copper oxide compounds for the gold color. Also, the glue used at the beginning and end of the sheets was identified as -Serish- animal glue.
Roqiyeh Movahedi Mehrabad , Reza Vahidzadeh,
Volume 2, Issue 1 (6-2019)
Abstract
The Shah Hamzeh mausoleum, located in the city of Qom, is a monument from the Safavid period. The eastern porch of this monument was decorated blue and white tiles during the Qajar period. The aim of this article is to introduce the historical monument of Shah Hamzeh and its decorations. In this regard, a sample of the blue and white tiles of the monument was technologically examined using library studies, optical and digital microscope methods, and SEM-EDX and XRD methods. Based on the studies conducted, the paint layer was applied directly to the stone body without a preparatory layer, and then a glass layer was applied on it.
The Shah Hamzeh mausoleum, located in the city of Qom, is a monument from the Safavid period. The eastern porch of this monument was decorated blue and white tiles during the Qajar period. The aim of this article is to introduce the historical monument of Shah Hamzeh and its decorations. In this regard, a sample of the blue and white tiles of the monument was technologically examined using library studies, optical and digital microscope methods, and SEM-EDX and XRD methods. Based on the studies conducted, the paint layer was applied directly to the stone body without a preparatory layer, and then a glass layer was applied on it.
Mona Montazeri Hedesh, Seyyedeh Haniyeh Ghavami Masouleh,
Volume 2, Issue 3 (1-2020)
Abstract
Textiles, akin to other organic materials, possess significant historical and cultural backgrounds. Their conservation and restoration have consistently been among the most critical concerns for specialists in this field, particularly in recent decades. This heightened focus on conservation may be attributed to the cessation of production for certain types of textiles in recent years—textiles that also hold considerable cultural heritage. Given their organic nature, textiles are rarely encountered in archaeological findings and have consequently received less attention compared to other artifact categories.This research focuses on developing a conservation proposal for a section of the entrance curtain (parde) of the Kaaba, an artifact of considerable cultural, political, social, and artistic significance. Through investigating the raw materials of this artifact and proposing an appropriate methodology for preserving its current structure, this study aims to both document its structure and safeguard this precious intangible heritage. Furthermore, it seeks to propose a suitable strategy for the preservation and presentation of such artifacts, thereby contributing to the preservation of shared artistic, intellectual, and cultural values among nations. Utilizing a comparative study and laboratory analyses via SEM and FTIR, various technological aspects of the artifact were examined. Subsequently, by identifying deteriorating factors and existing damages, a tailored conservation proposal commensurate with the artifact's condition was formulated. As this fragment is an intricately worked piece from the entrance curtain of the Kaaba, and one of eleven fragments donated to Iran over many years, it is hoped that this proposal can serve as a guideline for the conservation and restoration of other existing fragments of this artifact housed in other museums.
Elahhe Sadat Talebi Moqaddam,
Volume 2, Issue 4 (1-2020)
Abstract
The Ma'raq gold-embroidered curtain (Code 031) is among the exquisite artifacts dating back to the Qajar period, preserved in the collection of the Astan Quds Razavi. Due to the use of this precious artistic artifact in the Astan Quds Razavi complex, over time and under various factors, it has sustained diverse damages. To preserve this valuable textile artifact, its restoration was carried out in the Textile Restoration Workshop of Astan Quds Razavi. This article, with a brief overview of the technology and pathology of the gold-embroidered curtain (Code 031), aims to examine the restoration methods applied to it based on field studies.
Yaser Hamzavi, Hosein Ahmadi,
Volume 3, Issue 1 (6-2020)
Abstract
Murals are the main, media of human culture and civilization and the place and its long history in Iranian art is clear. There are specific forms of mural paintings in some Iranian architecture that are different from other usual wall paintings in materials, methods as well as implementation techniques. Unfortunately, these mural paintings are not studied certainly until now. Therefore, further investigation is needed due to the importance of this issue. Regarding to importance of necessity of art understanding before conservation, it is obvious that common conservation procedures on these relics (without appropriate understanding) have an inappropriate results on authenticity and integrity of the relics. Unfortunately, there is not adequate research about technology and conservation of these relics and related fields. Historical points, manufacturing and used materials, effects of technological problems, as introduction to conservation plan were main questions. The aim of this research is the identification of history of development, and used materials and techniques in these historic paintings by field and literature investigations. Technological understanding of this kind of murals during the time by application of literature review and data explanation. Due to low information in Persian, European Marouflaged Mural has been studied more than Iranian relics. The research subject and case studies are studied in a qualitative and descriptive research method and the subject is considered with ten historical and theoretical aspects. These paintings are executed on the layer of cloth (canvas) and then installed on the wall that is known as a part of the architecture arrays. This research at the first library study is conducted and then according to the results, the field studies are carried out and finally, the data are analyzed. Knowing the number of Marouflage according to literature review, the identification of constituent layers of Marouflage according to field studies, and Understanding the differences between a common wall Paintings and Marouflaged Mural in Iran, are the results of this paper. In this paper, the process of formation of this type of wall painting in Iran was studied and present examples of this method in Iranian architecture are introduced and explained. Some of the architectural interior surfaces are decorated by the textile painting by Marouflaged in Ilkhanid, Safavid and Quajar period; funerary monuments with polygonal plan have the most decorative surfaces such as Soltanieh Dome, Sheykh Safi mausoleum, Maryam church, Golestan palace and etc. According to studies, there was technical change in manufacturing process of large wall paintings and ceiling paintings at Renaissance period. It resulted to production of new kind of murals which known as Marouflaged Mural. The research obtained appropriate results about production, manufacturing, historical samples and effect of technological problems on conservation of Marouflaged Mural.
Hamid Reza Bakhshandehfard, Hosna Rabeie,
Volume 3, Issue 1 (6-2020)
Abstract
The cemetery of the Pardis Tepe, located in Qarchak of Tehran province, is a valuable historic landmark of the Iron Age which has been discovered in the excavations of these bronze wire objects. Despite the historical importance of the metal objects discovered in Tehran, no independent research has been carried out on the metal objects obtained from this site, in terms of technological and pathological aspects, using laboratory and methodological methods. The aim of this paper was to study a bronze rod found in Tepe Pardis, in terms of species and application, regarding technical questions about elemental combinations and the method of making and technological position of the study area. For this purpose, instrumental analysis methods such as AAS, SEM-EDS were used to identify the alloying technique, the chemical composition of the alloy, and metallography to identify the manufacturing method. Historical studies of the object attributed it to the Iron Age. Based on elemental data analysis, the composition used to make copper-tin alloy objects (bronze) and microstructure analysis by metallography, these objects were made by continuous thermal / mechanical operations. Depending on the results of the XRD test, cuprite, malachite and nantokite compounds were identified in corrosion products. Due to the significant presence of Nantokite, it can be said that the object has active corrosion.
Samera Salimpour Abkenar, Reza Mohammadi Ali Malek,
Volume 3, Issue 3 (12-2020)
Abstract
Nowadays, preparing a natural, non-toxic, low-cost, and biodegradable substrate called “Green sheet” is one of the new approaches to Nano sciences and biotechnology. Green sheets have multiple functions in various industries such as food packaging, preparation of wound dressings, hospital clothes, drug delivery systems, perfumery, antiperspirant, antimicrobial, and insect repellent, and they have found a special position. One of their unique applications is the use of cultural heritage, such as conservation in the restoration of ancient works, and historical documents, packaging and transportation of historical objects, and making traditional dolls and embroidery. In this study, a natural sheet was prepared using unreelable cocoons through degumming, opening, and finishing processes in the presence of a natural crosslinking agent and the well-known pad-dry-cure method. Tea tree and oregano plant oils were applied to achieve an antimicrobial property. The antimicrobial activity was assessed against Staphylococcus aureus, Escherichia coli, and Candida albicans through qualitative and quantitative methods. The results showed that the silk sheet had good resistance against the mentioned microorganisms.
Mohammad Yaghizaei,
Volume 6, Issue 1 (6-2023)
Abstract
Pottery is one of the most important man-made artifacts, and with time, its manufacturing and application technology has also changed. Therefore, in most archaeological excavations, pottery artifacts occupy a major part of the discoveries, and most of these artifacts have special damages. Some of these damages are common, such as fractures and cracks, and some are special due to the burial conditions and low quality in the construction technique; Such as body layering damage that requires special protection and restoration studies. In this study, a sample of terracotta cauldron hanging on the Segzabad hill of Qazvin Plain belonging to the Iron Age period was studied. This study aimed to understand the construction technique, investigate the damages on the pottery body and the cause of these damages. To answer these questions, instrumental tests, such as XRF, and comparative historical studies have been used. All these studies will ultimately help in the way of conservation and restoration that should be done. After all the protective steps to prevent secondary damage that may occur after its restoration, a box is designed to store the pottery and, in some cases, even display it. The result obtained from all the steps was the recognition of the construction technique and the documentation of the damage in the body, which ultimately led to the protection and restoration of this historical and cultural work.
Habib Meshkinfam Fard, Mohammad Hassan Talebian,
Volume 7, Issue 1 (6-2024)
Abstract
The structure of Persepolis is subjected to various factors that cause erosion and decay due to moisture. The cement mortars used in past restorations are one of the challenges in preserving this grand stone monument. Over time, these mortars, due to higher water absorption than the stone, have exacerbated the destructive effects of moisture, causing serious but gradual and irreversible damage. Since removing these mortars and replacing the past restorative measures to improve the current situation is extremely difficult and may have damaging consequences for these valuable artifacts, this research aims to evaluate the impact of nano waterproof coatings on reducing the moisture absorption of the used cement mortars through comprehensive studies on the current state of these monuments and the restorations carried out with cement. Therefore, this research aims to provide a suitable solution without needing to remove the cement mortar and with minimal intervention to protect these artifacts. This study employs an experimental research method and considers theoretical concepts within laboratory studies. In this process, two types of Iranian and foreign nano waterproof coatings named Zycosil Max and FarazSil were applied on similar cement mortar samples, and their permeability and water absorption were evaluated using water absorption percentage and capillarity tests. The results showed that both waterproof coatings effectively reduced the cement mortar's water absorption. Zycosil Max, with a performance of 60.5%, and Faraz Sil, with a performance of 48.02%, significantly reduced the water absorption of the cement mortar, with Zycosil Max showing better performance than FarazSil. However, considering that the water absorption percentage did not reach close to that of the stone samples of Persepolis and the more than tenfold difference in water absorption percentage, none of the studied materials are recommended for waterproofing the cement mortar used in the restoration of the Persepolis monument.
Mohammad Reza Rokni, Hamid Fadaei , Marjan Keyfargir ,
Volume 7, Issue 2 (9-2024)
Abstract
Persepolis, as one of Iran's most prominent archaeological sites, symbolizes the grandeur of the Achaemenid Empire's culture and art. The stone carving art and architectural ornaments of this era, drawing from the experiences and knowledge of various cultures, created a novel and artistic style that is evident in the stone reliefs of Persepolis. Due to the delicacy and precision of these reliefs, they have attracted the attention of many researchers, raising questions about their artistic values and execution methods. This study aims to analyze the execution techniques of Persepolis' reliefs by documenting examples of these reliefs on the eastern staircase of Apadana Palace and the northern staircase of the Treasury Palace. To document and create 3D models of the reliefs, advanced photogrammetry methods, with a particular emphasis on photo-scanning technology, were employed. Images were processed using specialized software such as Agisoft, 3D Zephyr, and Reality Capture. The results of this study reveal a part of the creation process of these artworks that has been less explored until now. Furthermore, the effectiveness of the photogrammetry-based documentation method in extracting precise technical and artistic data is confirmed. This method not only enables a more detailed analysis of the reliefs' intricacies and geometric proportions but also contributes to a deeper understanding of their artistic values and their place in the history of art. This approach can serve as a valuable model for future research in the field of documenting and extracting technical and artistic data from historical stone reliefs.
Aminallah Kamali,
Volume 7, Issue 3 (11-2024)
Abstract
The Bahabad zinc smelting site, located 71 km north of Bahabad in Yazd Province, Iran, spanning 220 m² within the Tabas-Posht-e-Badam metallogenic belt, is a key ancient metallurgical center. This study aims to identify the extracted metal, analyze metallurgical processes, and reconstruct the employed technologies through petrographic and geochemical analyses of ceramic nails and furnace slags. Thirty ceramic nails and 20 slag samples were collected, with five samples from each group selected for petrographic study and chemical analysis using inductively coupled plasma optical emission spectroscopy (ICP-OES). Petrographic results revealed that the ceramic nails, made from fired clay, exhibit a porphyritic texture with ~20% quartz and minor calcite, while slags contain fayalite (Fe₂SiO₄), melilite, pyroxene, and wüstite (FeO), indicating high-temperature, reducing conditions. Chemical analysis showed an average of 1.21% ZnO in nails, confirming their role in collecting zinc vapors as tutia (ZnO) over centuries, and 3.74% ZnO in slags, suggesting incomplete zinc extraction. Low lead (669 ppm in nails, 315 ppm in slags) and sulfur (1053 ppm in nails, 361 ppm in slags) concentrations indicate the use of oxidized ores like smithsonite (ZnCO₃) or hemimorphite rather than sulfides like sphalerite (ZnS), consistent with the region’s oxidized lead-zinc deposits. Two-tier furnaces, with a lower heating chamber and an upper perforated clay plate holding ceramic nails (10–20 cm long, 2–4 cm diameter), facilitated upward distillation. This technology contrasts with India’s downward distillation (sphalerite, square furnaces) and China’s condenser-based upward method (rectangular furnaces), highlighting Iran’s indigenous innovation using charcoal and ceramic nails. The study underscores the technology’s adaptation to local conditions and its significance in global metallurgical history.
Mitra Etezadi,
Volume 7, Issue 4 (2-2025)
Abstract
The Nasseri Carriage, a valuable historical artifact from the Qajar era, is currently housed in the Historical Car Museum of the Foundation of the Oppressed. Due to its complex structure and the diversity of materials used in its construction, the carriage had sustained significant damage, necessitating comprehensive conservation and restoration efforts. This project aimed to restore the carriage’s structural integrity and aesthetic appearance, preparing it for display in the museum. This article outlines the restoration process, along with historical and technical documentation.
