Conservation of cultural heritage. Procedure for the analytical evaluation to select cleaning methods for porous inorganic materials used in cultural heritage

2021 ◽  
Keyword(s):  
Cultural Heritage ◽  
Inorganic Materials ◽  
Analytical Evaluation ◽  
Materials Used ◽  
Cleaning Methods

Current Highlights About the Safety of Inorganic Nanomaterials in Healthcare

2019 ◽  
Vol 26 (12) ◽  
pp. 2147-2165 ◽  
Author(s):  
Luana Perioli ◽  
Cinzia Pagano ◽  
Maria Rachele Ceccarini
Keyword(s):  
Zinc Oxide ◽  
Inorganic Material ◽  
Small Dimension ◽  
Inorganic Materials ◽  
Intracellular Space ◽  
Increased Risk ◽  
Inorganic Nanomaterials ◽  
Materials Used ◽  
Health Field ◽  
Fundamental Requirement

: In recent years inorganic materials are largely present in products intended for health care. Literature gives many examples of inorganic materials used in many healthcare products, mainly in pharmaceutical field. : Silver, zinc oxide, titanium oxide, iron oxide, gold, mesoporous silica, hydrotalcite-like compound and nanoclays are the most common inorganic materials used in nanosized form for different applications in the health field. Generally, these materials are employed to realize formulations for systemic use, often with the aim to perform a specific targeting to the pathological site. The nanometric dimensions are often preferred to obtain the cellular internalization when the target is localized in the intracellular space. : Some materials are frequently used in topical formulations as rheological agents, adsorbents, mattifying agents, physical sunscreen (e.g. zinc oxide, titanium dioxide), and others. : Recent studies highlighted that the use of nanosized inorganic materials can represent a risk for health. The very small dimension (nanometric) until a few years ago represented a fundamental requirement; however, it is currently held responsible for the inorganic material toxicity. This aspect is very important to be considered as actually numerous inorganic materials can be found in many products available in the market, often dedicated to infants and children. These materials are used without taking into account their dimensional properties with increased risk for the user/patient. : This review deals with a deep analysis of current researches documenting the toxicity of nanometric inorganic materials especially those largely used in products available in the market.

scholarly journals A multi-analytical approach for the characterisation of the oldest pictorial cycle in the 12th century monastery Santa Maria delle Cerrate

2013 ◽  
Vol 1 (1) ◽  
pp. 12 ◽  
Author(s):  
Giuseppe E. De Benedetto ◽  
Amedeo Savino ◽  
Daniela Fico ◽  
Daniela Rizzo ◽  
Antonio Pennetta ◽  
...  
Keyword(s):  
Analytical Approach ◽  
Point Of View ◽  
Inorganic Materials ◽  
Multidisciplinary Research ◽  
South Italy ◽  
Material Characterisation ◽  
12Th Century ◽  
Materials Used ◽  
The University ◽  
Santa Maria

A multidisciplinary research, currently in progress at the University of Salento in collaboration with the Lecce Provincial Museum, interests different artistic expressions widespread in the Salento peninsula (South Italy). In the present study, the characterisation of organic and inorganic materials used in the oldest pictorial cycle found in the 12th century monastery Santa Maria delle Cerrate was carried out thanks to a multi-analytical approach. Previous investigations have focused on the problem of dating the frescoes mainly on the basis of the stylistic aspects and the material characterisation has been definitely underinvestigated. Chromatographic and spectrometric techniques were used: micro-Raman spectroscopy was used for recognising pigments and gas chromatography with mass spectrometric detection for analysing organic binders. These techniques enabled us to characterise pigments and binders. The presence of both true fresco and tempera bound pigments was assessed. Among the different pigments detected, the results relevant to the blue paints were interesting: two different blue pigments were, indeed, identified, lapis lazuli and smalt (cobalt blue glass) both unexpected. As a result, Santa Maria delle Cerrate appears to be the first known example of their use in South Italy. From a conservation point of view, moreover, the knowledge of the palette permitted to highlight the reason of observed decay of some paints: for instance, lead white was used in some panels, explaining their blackening.

Polymer Solar Cells

2012 ◽  
pp. 101-119
Author(s):  
Catalin Zaharia
Keyword(s):  
Solar Cells ◽  
Polymer Solar Cells ◽  
Inorganic Materials ◽  
Major Drawback ◽  
Environmentally Safe ◽  
Large Production ◽  
Materials Used ◽  
Solar Cell Technology ◽  
Significant Attention ◽  
Plastic Solar Cell

Currently, the active materials used for the fabrication of solar cells are mainly inorganic. Materials such as silicon (Si), gallium-arsenide (GaAs), cadmium-telluride (CdTe), and cadmium-indium-selenide (CIS). Nevertheless, the large production cost for the silicon solar cells is one of the major drawback in this field. This chapter is dedicated to a critical presentation of another type of photovoltaics, called polymer, or plastic, solar cell technology. Polymer solar cells have attracted significant attention in the past few years due to their potential of providing environmentally safe, lightweight, flexible, and efficient solar cells.

scholarly journals CONSERVATION ETHICS AND PRINCIBLES OF ARCHAEOLOGICAL TEXTILE

2021 ◽  
Vol 10 (78) ◽  
Keyword(s):  
Cultural Heritage ◽  
Urban Areas ◽  
Technology Development ◽  
Inorganic Materials ◽  
Next Generation ◽  
Academic Field ◽  
Religious Traditions ◽  
Textile Conservation ◽  
Analytical Research ◽  
Definition Of

Textiles made of organic fibers, include anthropologic knowledge about lifestyle, art idea, mythology, daily life and religious traditions of the culture made them. These tangible examples of Cultural identity of the society important for transfer traditional knowledge from next generation. Textile Cultural artefacts responsibility and interest of conservation and restoration science professionals can find from archaeological excavations or gathering from urban areas and given to museums from collectors. Historic textiles are hard to found well preserved and hard to passing it onto the next generation compared to artefacts made from inorganic materials because of they made of organic materials. Every country on the earth has their own definition of Cultural Heritage and preservation laws. Under this diversity in the field of conservation and restoration science, it is necessary to establish standard definitions and use a common language at academic field likewise in every profession. Ethical codes and principles made for conservation of Cultural Heritage are a guide for conservation professionals. Politics of conservation practices change by technology development. In recent years, by analytical research, has been noticed that active conservation activities can damage the cultural heritage hence passive conservation activities like documentation and preservative conservation becomes priority. Descriptive scanning model based on screening of literature related to textile conservation was adopted for this paper. Keywords: Cultural heritage, archaeological textile, conservation, restoration, ethics

scholarly journals Inventory and Protection of Photographs from the Julij Felaher Collection

Atlanti ◽  
2018 ◽  
Vol 28 (1) ◽  
pp. 91-102
Author(s):  
Lucija Planinc ◽  
Marija Grabnar ◽  
Jedert Vodopivec Tomažič
Keyword(s):  
Cultural Heritage ◽  
Basic Information ◽  
Appropriate Use ◽  
Physical Protection ◽  
Photographic Technique ◽  
Permanent Storage ◽  
The Republic ◽  
Materials Used ◽  
And Storage ◽  
Primary Support

Photographs bear visual memories of events, people, buildings and landscapes. The sensitivity of the materials used makes them a vulnerable part of cultural heritage, therefore their appropriate use and storage is ever more important. The work presented is based on an inventory of photographs from the Julij Felaher Collection (SI AS 1384) kept by the Archives of the Republic of Slovenia. In addition to basic information, the inventory sheet used also included reference to the type of photographic technique, the type of primary support, the type of damage, and an assessment of the preservation status. Based on the data obtained, physical protection of the photographs was carried out in order to enable their permanent storage.

scholarly journals Archaeological glass conservation and restoration intervention materials – a literature review

2021 ◽  
Author(s):  
Andreia Pereira ◽  
Márcia Vilarigues ◽  
Inês Coutinho
Keyword(s):  
Critical Analysis ◽  
Epoxy Resins ◽  
Acrylic Resin ◽  
Literature Survey ◽  
Acidic Solutions ◽  
Mechanical Methods ◽  
Materials Used ◽  
Cleaning Methods ◽  
Archaeological Objects ◽  
Common Intervention

Conservation and restoration on archaeological objects in glass often involve the removal of materials from previous restorations and comprise a deep knowledge about present and past methodologies. This article presents a literature survey and critical analysis of the main materials used in the different stages of intervention: cleaning, consolidation, joining fragments and filling gaps. A considerable number of used products was identified, which illustrates the use of various methodologies among professionals from this area. Cleaning methods vary from mechanical methods using a brush (less invasive) to the use of various acidic solutions, some of which can endanger the integrity of objects, being the most common ethylenediamine tetra-acetic acid. We highlight the use of epoxy resins as adhesive, consolidant and filler, as well as the acrylic resin Paraloid B-72, identified as reversible, colorless, stable and inert. This survey and analysis of the bibliography reveals the need to implement common intervention methodologies dedicated to this material.

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