## 2 The Published Articles
Considering the areas where carabiners are used (civil constructions, navigation, oil industry, rescue operations, etc. ), the corrosive environments studied were rainwater, Black Sea water and fire extinguishing solution. The structure of the deposited layers was studied by scanning electron microscopy, while the structure of the interface between the alloy and the corrosive medium was analyzed by electrochemical impedance spectroscopy. According to this study, the corrosion resistance of zinc-based phosphate-coated and zinc/iron-based phosphate-coated samples is higher than that of the studied carbon steel samples despite the corrosion environment. The fifth article [5] studies the effect of using TiO\({}_{2}\) nanoparticles in the production of cement composites, already known worldwide, as having high self-cleaning capacity, antimicrobial, antibacterial, antifungal properties and contributing to the reduction of environmental pollution. The paper aims to analyze the influence that TiO\({}_{2}\) nanoparticles have on the cementation matrix in terms of hydrophilicity, this being one of the two main parameters of the self-cleaning mechanism. Experimental tests, carried out using the indirect method of measuring surface water absorption, indicated that an addition of 3-6% (compared to the amount of cement) of TiO\({}_{2}\) nanoparticles is effective in increasing the surface hydrophilicity of cement composites. An excess of TiO\({}_{2}\) nanoparticles in the composite matrix of 10% TiO\({}_{2}\) nanoparticles (relative to the amount of cement) not only does not improve the performance of the surface in terms of hydrophilicity, but also visibly reduces it. The sixth article [6] presents the expertise of the authentication of a painting by [PERSON] by involving multi-analytical techniques, in order to identify and evaluate some archeometric and chemometric characteristics of the pictorial materials and the support, used in determining the age. The painting is made with oil colors on pressed cardboard, with preparation based on chalk dust and animal glue. The painting shows two elements as fakes, which have attracted suspicion, namely the author's signature (showing a semi-transparent covering veil), and, on the reverse, a writing of the date, made by a very controversial art historian. According to the authors' previous experiments, the investigation was carried out by direct analysis with magnification devices, in reflected UV(ultraviolet), VIS (visible) and NIR (near infrared) light, and by optical microscopy (OM), scanning electron microscopy equipped with energy dispersive spectroscopy (SEM-EDX) and \(\upmu\)-FTIR. The results showed that the painting is authentic and belongs to [PERSON], and the dating previously established by [PERSON] through the writing on the back is certain. Another article [7] focuses on new materials and ecological processes for cleaning old paintings that require special attention to the selection of processes and systems compatible with the chemical nature and adhesion of dirt deposits, in order not to affect the polychrome layer or the state of preservation of Vbechi paintings. The study was carried out on a 19 th century icon made in fat tempera, on a thin layer of preparation, showing oxidatively fouled dirt. The cleaning was done using extracts obtained from sage, St. John's wort and, respectively, licorice root teas obtained through different extraction processes: microwave oven, ultrasound, boiling and, respectively, room temperature. The last article [8] looks at vernacular buildings, which are usually built using materials at hand, including wood, natural stone and bricks (either clay or mud bricks). All these materials being exposed to a series of environmental factors, their structure and integrity are affected.