Adriana-Mariana Borș

• PhD Chemist
• Senior Researcher CSI at INOE 2000-IHP

The aim of this study was to develop some sunscreen formulations able to maintain their photoprotection when exposed to UV radiation. In this context, the influence of the antioxidant α-tocopherol on the photostability of lipid-based nanoparticles, namely solid lipid nanoparticles (SLNs) and nanostructured lipid carriers (NLCs), encapsulated with a...

In 2023, 18.3 GW of new wind energy conversion capacity was installed in Europe; most of them (79%) represent onshore capacities. Most of this energy production is achieved with horizontal axis wind turbines. For this type of turbine, the location of the transmission coupled with an electric generator or a hydraulic group, in the turbine platform,...

Citation: Caramitu, A.R.; Ciobanu, R.C.; Lungu, M.V.; Lungulescu, E.-M.; Scheiner, C.M.; Aradoaei, M.; Bors, A.M.; Rus, T. Polymeric Protective Films as Anticorrosive Coatings-Environmental Evaluation. Polymers 2024, 16, 2192. https://doi. Abstract: The behavior of two polymeric protective paint coatings (epoxy and polyurethane) applied over an epo...

This research investigates novel polymeric composite materials for automotive interior trim applications. The composites utilize recycled polypropylene (PPr) matrix and carboxymethylcellulose (CMC) as filler (PPr/CMC: 100/0, 95/5, and 90/10 wt.%). The materials were processed by extrusion and injection molding. Considering their intended applicatio...

The lubrication process carried out by hydraulic fluids represents one of the important aspects of simple or complex industrial technological systems. The identification of hydraulic oils and the operating conditions of the component elements led to the systemic approach to the lubrication process in order to achieve an efficient productivity, to p...

By following the expression of the binding force of the molecules (resistance of fluid to flow) under controlled pressure and temperature conditions and the influence of the characteristics on the efficiency of the components of the hydraulic mechanism, one can evaluate the compatibility and optimize the potential of the lubricating fluid (subjecte...

For the developers of processes and technologies, the use of water resources as sources of drinking water is a real challenge, in the context of sustainable development. The degree of pollution and contamination of the waters used as raw material in the analytical, pharmaceutical or industrial field incite researchers from interdisciplinary fields...

Hydraulic oils play a major role in the performance of high-precision industrial machine tools. The share of hydraulic oils on the market is significant and constitutes an important group within lubricants. The decision to use a certain type of hydraulic oil from a certain range can sometimes be very difficult. The difference in use and operation i...

The paper presents the characterization of 5 polymer composite materials with a poly-propylene (PP) matrix obtained with different (mass) concentrations of strontium ferrite (Fe12SrO19) reinforcement that have synergistic protective properties against electrostatic discharges (ESD) and electromagnetic impulses (EMI). These types of composites can b...

The piezocomposites from poly-(vinylidene fluoride) (PVDF) with BaTiO3 (BT) are largely presented in literature, but the composites from polydimethylsiloxane (PDMS) with BT consist a very new scientific preoccupation. The novelty of the paper lies in a new simpler route of preparation of the two composites with PDMS and respectively PVDF matrix, wi...

The lubrication process carried out by hydraulic fluids represents one of the important aspects of simple or complex industrial technological systems. The identification of hydraulic oils and the operating conditions of the component elements led to the systemic approach to the lubrication process in order to achieve an efficient productivity, to p...

Hydraulic oils play a major role in the performance of high-precision industrial machine tools. The share of hydraulic oils on the market is significant and constitutes an important group within lubricants. The decision to use a certain type of hydraulic oil from a certain range can sometimes be very difficult. The difference in use and operation i...

Increasing the efficiency of hydraulic drive systems (HDSs) maintenance activities is a permanent concern at the global level as a result of the considerable expansion of their field of applicability. The maintenance of HDSs is part of the integrated management concept and it is a complex approach to specific activities in order to maintain HDSs pe...

In many cases, the quality of the well water intended for human consumption does not meet the standards to be directly consumed by humans. Well water can be affected in the underground both by the interaction with minerals from aquifers and by contamination caused by anthropogenic activities. The objective of the study was to produce and test a fil...

Mycotoxins are secondary metabolites produced by filamentous fungi in food and feed due to various conditions. The present study aims to evaluate different factors that affect mycotoxin production and their controlling methods. The influence of several agronomic factors such as tillage works, crop rotation, the use of disease-resistant varieties/hy...

Reverse engineering and 3D scanning are critical tools for remanufacturing components in the context of the circular economy. By disassembling and measuring existing components, companies can design and develop new parts replacing the old ones, parts that are compatible with the original equipment, either to repair faulty subassemblies, or to impro...

Featured Application This work lies in the field of hydraulic drive systems maintenance and remanufacturing and within the framework of the circular economy concept. The specific application is the remanufacture of hydraulic flowmeter components using additive manufacturing and reverse engineering techniques. By successfully repairing and upgrading...

The article presents the creation of an experimental model of a hybrid vehicle intended to work both in conventional environments, in which the use of a diesel engine is permitted, and in environments with pollution restrictions (noxious emissions), in which an electric motor powered by batteries is used. At the level of the experimental model, the...

The purpose of this paper was to obtain new hybrid composite materials (HCM) with applications in electromagnetic shielding and their characterization using new methods. The paper presents 6 experimental models (EM) of new hybrid composite materials (HCM) with applications in the electromagnetic shielding and their characterization using new method...

Electromagnetic compatibility issues and those generated by these radiations are a major concern for electrical and electronic products, mainly in the fields of communications, information technology, transportation, security and medical services. The paper presents the way to obtain nanostructured paint/plastic/nanopowder paint systems with electr...

This first part of the study devoted to the new trends in Persistent Organic Polutants (POPs) management in Romania presents some remarks regarding National Implementation Plan on POPs, focused on National POPs Inventory, as a part of Environmental requirements related to pre-accession of Romania to European Union. The paper is an approach of gener...

This second part of this study is devoted to enabling activities in order to facilitate early actions in the implementation of the Stockholm Convention on Persistent Organic Pollutants (POPs) in Romania, and is focused on Romanian Strategy and Action Plan.

This paper presents simple statistical instruments to identify some characteristic parameters for water-based metalworking fluids monitoring and to develop a regression model for spent emulsions evaluation. By Factor Analysis and Loading Plot, the surface tension and pH values are proposed as significant physical-chemical parameters that can be ade...

In order to limit the material damages and the human victims caused by some earthquakes, a complex system of protection of high-risk equipment and installations were designed, built and tested in Râmnicu Vâlcea (Romania). Such are the power supply systems and electrical networks that have a warning in case of major earthquakes based on the loc...

A complex system for zonal earthquake prediction, warning, and local assessment of seismic events has been designed, performed, implemented, and experimented/validated. The system was designed to ensure simultaneously: the reception of warning signals following earthquakes with the epicentre on a radius of 1000 km; acquisition of local precursor da...

In order to identify the premature biodegradation causes of paint applied in 2013 on a railway bridge, top coat layers applied have been investigated by XRF and SEM-EDAX techniques after 32 years, corresponding to periods of operation under identical climatic conditions of 4.5 years and 3.5 years respectively. By analysis of the experimental result...

Seismic warning and prediction systems based on precursor data packets were analysed aiming to develop a system to prevent explosions and fires caused by uncontrolled gas leaks following the deterioration of gas networks produced as a result of major seismic movements. At the current stage of knowledge, the accurate prediction in time and intensity...

Seismic warning and prediction systems based on precursor data packets were analysed aiming to develop a system to prevent explosions and fires caused by uncontrolled gas leaks following the deterioration of gas networks produced as a result of major seismic movements. At the current stage of knowledge, the accurate prediction in time and intensity...

Through gravimetric determinations, volume resistivity, dielectric spectroscopy, and comparative thermal analysis (TG, DTA and DTG), the interactions between the distilled water and three different types of alkyd-epoxy-melamine, epoxy and polyurethane lacquers were studied. From the experimental determinations it was found that after 700 h of immer...

The paper shows a method of estimating as accurately as possible the state of traffic on an urban street section delimited by applying a multicriterial calculation model for improving the estimation of the level of air quality pollution. The algorithm can be applied to a linear road section for which the travel time is minimal, data recorded for a...

The thermochemical stability of a MOL (mineral oil) electroinsulating mineral oil was studied by the gas chromatography technique, compared with a Voil (vegetable oil) electroinsulating fluid based on natural esters (oil), exposed to a longer (1000 hours) thermal treatment (110 � 5 �C) in contact with the core transformer plate (silicon steel sheet...

A complex system for zonal earthquake prediction, warning, and local assessment of seismic events has been designed, performed, implemented, and experimented/validated. The system was designed to ensure simultaneously: the reception of warning signals following earthquakes with the epicentre on a radius of 1000 km; acquisition of local precursor da...

The paper shows a method of estimating as accurately as possible the state of traffic on an urban street section delimited by applying a multicriterial calculation model for improving the estimation of the level of air quality pollution. The algorithm can be applied to a linear road section for which the travel time is minimal, data recorded for a...

In order to evaluate the possibility of reuse of some mixed waste from plastic and paper, composite samples of both HDPE and PP basis were made with different filler contents of crushed postage envelope waste. From the morphostructural characterization (SEM images) of the samples obtained it was observed that the HDPE and PP samples had had a homog...

The magnetic and dielectric behavior of Portland cement mortars with various fly ashes (waste from the thermoelectric power plant) with a Fe 2 O 3 content of 13.8 % was studied. The dielectric losses, tgδ, the real component of the dielectric permeability, ε',and the real magnet permeability, ì, the parameters with which we calculated the shielding...

By using the dielectric spectroscopy technique in the extremely low frequency (1–200Hz) range, dielectric loss tgδ was determined on both Aspergillus niger cultures in different growth stages and autoclaved biomass compared to the Czapex-Dox culture medium with sterile sucrose. Experimental results have shown that living and sterile matter samples...

In order to evaluate the behavior in various electrical applications, the main mechanical and electrical characteristics of three different varieties of lacquers - based on the alkyl-epoxy-melamine copolymer, the epoxy polymer and the polyurethane were compared. From the mechanical determinations, it was found that at ambient temperature the polyu...

In order to identify the causes that led to microbiological degradation by biofouling increases a top coat painting layer applied to a railway bridge was analyzed by both FTIR and the DSC methods; the analysed painting material was that used to paint the bridge in 2013.The determinations were performed comparatively on samples of a similar painting...

This paper shows the ageing study of some coatings and / or impregnation lacquers due to microbiological stress through fungal attack. Dielectric spectroscopy has shown that the dielectric losses of the investigated materials increase as result of microbiological ageing. The mean recorded increases are about 4 times for the alkyl-epoxy-melamine cop...

In order to prevent incidents due to uncontrolled gas leakage and explosions /devastating fires, factors that determine the durability and safety in exploitation of gas networks made of plastic and polyethylene are analysed. Studies have shown that the durability and safety in exploitation of natural gas distribution networks, made from polyethylen...

The biodegradation processes of the paint layers as a result of biofouling increase are described. The study results that biodegradation of painting materials is a complex process by which the anticorrosive protection of paint layers is drastically diminished. In the first stage of formation of biofouling on the surface of the paint layers there ap...

By electrical determinations, digital microscopy and visual observations, the anticorrosive insulation capacity of the paint layers applied to the three sections of a bridge over the Tisza River was assessed. The visual observations have highlighted the fact that on the Eastern section repainted in 2013, biofouling increases are significant (covers...

The paper presents experimental data on the determination of some Persistent Organic Pollutants (POPs) present in surface waters which might affect environmental quality and human health by up taking them through food chain. For this purpose specific terms have been defined for the risk assessment of population exposed to POPs. Evolution of spatial...

The local, regional or global problems created by chemical, physical, noise, microbiological and, not least, electromagnetic environmental pollution are particularly complex. Due to their diverse nature, chemicals are indispensable to areas of great importance such as transport, agriculture, industry, etc. Chemistry and state-of-the-art technology...

The influence of fly ash adittion (90 % fraction < 100 µm) on the cement mortar characteristics was studied. The XRD, XRF, SEM and FTIR determinations indicated that fly ash used has a hollow microstructure of microsphere and cenosphere whose total content in SiO 2 , Al 2 O 3 and Fe 2 O 3 is 88.63 % and that of CaO and MgO of 8.55 %. The mechanical...

This paper presents a comparative study with respect to the behavior of some painting materials, used mainly for decorative and protective industrial applications, exposed to a controlled accelerated ageing process by using thermal storage and successive thermal cycles. The evaluation of the structural changes, as well as those concerning the diele...

ATR / FTIR and DSC techniques have been used to evaluate the thermal stability of some ageing paint materials by heat treatment while immersion in natural ester-based electro-insulating oil. Experimental determinations have highlighted the fact that the investigated paint materials (epoxy resins) have a high oxygen affinity and thus, in closed syst...

UV radiation has a long-term effect on the durability of anti-corrosive coatings applied by painting, generating conditions for accelerated localized corrosion of the protected metallic structure with adverse effects on operational safety. This paper presents a comparative study of the behavior of some painting materials ageing by exposure to UV ra...

Thermal TG/DTG/DTA analysis coupled with FTIR spectroscopy was applied to some sorts of mineral and vegetable oils used in electrical equipment. On heating in inert atmosphere, it was observed that the mineral oils vaporize, while the vegetable oils undergo hydrolysis, yielding fatty acids as main volatiles, as indicated by FTIR. In synthetic air,...

This paper describes the evaluation of the aging process of some polymeric painting materials subjected to a thermal treatment in electro insulating fluids, based on natural esters (vegetable oils). The paint layers surface morphology was comparatively characterized by FESEM technique, prior to the exposure, and after 1000 h of exposure to vegetabl...

Polyethylene (PE) insulations have a wide applicability in the insulation of both underground pipelines and underground power cables. In this context, by coupled techniques of thermal analysis (TG/DTG+DTA) and microbiological determinations, have been studied thermooxidability and resistance to moulds action of some polyethylene sorts. Following th...

Thermal TG/DTG/DTA analysis coupled with FTIR spectroscopy was applied to some sorts of mineral and vegetable oils used in electrical equipment. On heating in inert atmosphere, it was observed that the mineral oils vaporize, while the vegetable oils undergo hydrolysis, yielding fatty acids as main volatiles, as indicated by FTIR. In synthetic air,...

By thermal analysis techniques have been studied the interactions of commercial polymeric painting materials with an electro-insulating fluid (vegetable oil), natural esters based. Experimental results have highlighted the fact that, the dyeing materials investigated in contact with the warm vegetable oil, have antioxidant characteristics (preferen...

By thermal analysis techniques have been studied the interactions of commercial polymeric painting materials with an electro-insulating fluid (vegetable oil), natural esters based. Experimental results have highlighted the fact that, the dyeing materials investigated in contact with the warm vegetable oil, have antioxidant characteristics (preferen...

From renewable resources through environment-friendly techniques, a pure vegetable and environmentally friendly oil was developed for electrical applications. Following the characterization of vegetable oil in comparison with commercial mineral oils, a number of functional advantages have been achieved in favour of the green product, namely: devast...

This paper describes the evaluation of the aging process of some polymeric painting materials subjected to a thermal treatment in electro insulating fluids, based on natural esters (vegetable oils). The paint layers surface morphology was comparatively characterized by FESEM technique, prior to the exposure, and after 1000 h of exposure to vegetabl...

This paper presents a comparative study with respect to the behavior of some painting materials, used mainly for decorative and protective industrial applications, exposed to a controlled accelerated ageing process by using thermal storage and successive thermal cycles. The evaluation of the structural changes, as well as those concerning the diele...

ATR / FTIR and DSC techniques have been used to evaluate the thermal stability of some ageing paint materials by heat treatment while immersion in natural ester-based electro-insulating oil. Experimental determinations have highlighted the fact that the investigated paint materials (epoxy resins) have a high oxygen affinity and thus, in closed syst...

For the purpose of using three different types of painting materials for the inner protection of the transformer vats, their behavior was studied under actual conditions of operation in the transformer (thermal stress in electro-insulating fluid based on the natural ester in contact with copper for electro-technical use and electro-insulating paper...

For the purpose of using three different types of painting materials for the inner protection of the transformer vats, their behavior was studied under actual conditions of operation in the transformer (thermal stress in electro-insulating fluid based on the natural ester in contact with copper for electro-technical use and electro-insulating paper...

By dielectric spectroscopy determinations dielectric loss-determinant of electromagnetic shielding capacity-in the ELF band (50-3000 Hz) field of some mortars with fly ash added was evaluated. The experimental results show that the use of ashes from the thermal power plant for the construction of cement mortars and concrete is environmentally frien...

As a result of technological developments, the electricity production and consumption and, implicitly, environmental pollution with electromagnetic fields of anthropogenic origin is constantly in increasing. Without electricity and without telecommunication systems (the pollution main sources with EMF in the ELF band or RF band), nowadays human lif...

The durability and safe operation of electrical equipment and devices with mixed insulation systems (solid/ fluid-electro-insulating paper/oil) is determined by the insulation aging under simultaneous and synergic actions of electrical, thermal and chemical stress factors etc. In this context, degradations of insulating paper exposed to thermal agi...

From renewable resources through environment-friendly techniques, a pure vegetable and environmentally friendly oil was developed for electrical applications. Following the characterization of vegetable oil in comparison with commercial mineral oils, a number of functional advantages have been achieved in favour of the green product, namely: devast...

In order to determine the influence of three different types of dyeing materials with the esters vegetable-based electro-insulating fluid, by comparative analyses made on simple vegetable oil; oil in contact with copper foil and Kraft paper; oil in contact with copper foil and Kraft paper and the three types of paint investigated, the evolution dur...

The energy required by driving electric vehicles and internal combustion engines, specific emissions of CO2 and pollutants (SO2, NOx, powders, etc.) from both internal combustion engines and thermo-power plants were compared. From the undertaken studies and analyses, the specific CO2 emissions of a Diesel engine with an average fuel consumption of...

UV radiation has a long-Term effect on the durability of anti-corrosive coatings applied by painting, generating conditions for accelerated localized corrosion of the protected metallic structure with adverse effects on operational safety. This paper presents a comparative study of the behavior of some painting materials ageing by exposure to UV ra...

Sorption of heavy metals on Na-montmorillonite was studied as a function of solution pH and different concentrations of background electrolyte and also a function of added metal ion at constant pH. Equilibrium isotherms have been measured and analyzed using a Langmuir isotherm model. The metal ions were predominantly adsorbed on the permanent charg...

The energy required by driving electric vehicles and internal combustion engines, specific emissions of CO2 and pollutants (SO2, NOx, powders, etc.) from both internal combustion engines and thermo-power plants were compared. From the undertaken studies and analyses, the specific CO2 emissions of a Diesel engine with an average fuel consumption of...

In order to determine the influence of three different types of dyeing materials with the esters vegetable-based electro-insulating fluid, by comparative analyses made on simple vegetable oil; oil in contact with copper foil and Kraft paper; oil in contact with copper foil and Kraft paper and the three types of paint investigated, the evolution dur...

Polyethylene (PE) insulations have a wide applicability in the insulation of both underground pipelines and underground power cables. In this context, by coupled techniques of thermal analysis (TG/DTG+DTA) and microbiological determinations, have been studied thermooxidability and resistance to moulds action of some polyethylene sorts. Following th...

The article presents issues related to the field of electrical disturbances and their complex implications, including the electrical security of gas facilities. There are also presented innovative insulating pipes connections designed to ensure the electrical separation of the distribution networks from the gas utilization facilities. By measuring...

In order to assess the risk of explosion and fire in electrical equipment using electro-insulating fluids have been comparative determined gases formed after thermal ageing of some electrical use oils. The comparative experimental data obtained by gas chromatography technique on 5 different sorts of insulating fluids (a sort of vegetable oil with h...

In order to assess the behavior and lifetime of some metallic pipelines (made with steel pipelines insulated with heat applied polyethylene foil) buried in the ground with medium chemical aggressivity (resistivity between 20 and 45 Ω · m) and with predominant mold species Trichoderma viridae, Aspergillus niger and Chaetomium globosum, two undergrou...

In order to assess the behavior and lifetime of some metallic pipelines (made with steel pipelines insulated with heat applied polyethylene foil) buried in the ground with medium chemical aggressivity (resistivity between 20 and 45 Ω · m) and with predominant mold species Trichoderma viridae, Aspergillus niger and Chaetomium globosum, two undergrou...

In order to assess the risk of explosion and fire in electrical equipment using electro-insulating fluids have been comparative determined gases formed after thermal ageing of some electrical use oils. The comparative experimental data obtained by gas chromatography technique on 5 different sorts of insulating fluids (a sort of vegetable oil with h...

The article presents issues related to the field of electrical disturbances and their complex implications, including the electrical security of gas facilities. There are also presented innovative insulating pipes connections designed to ensure the electrical separation of the distribution networks from the gas utilization facilities. By measuring...

The energy required by driving electric vehicles and internal combustion engines, specific emissions of CO2 and pollutants (SO2, NOx, powders, etc.) from both internal combustion engines and thermo-power plants were compared. From the undertaken studies and analyses, the specific CO2 emissions of a Diesel engine with an average fuel consumption of...

In order to assess the risk of explosion and fire in electrical equipment using electro-insulating fluids have been comparative determined gases formed after thermal ageing of some electrical use oils. The comparative experimental data obtained by gas chromatography technique on 5 different sorts of insulating fluids (a sort of vegetable oil with h...

The individual heating facilities in residential and non-residential areas are emission sources that give important weight to the national emission of fine particulates. Modernization and thermal rehabilitation of dwellings has as main goals the imrovement of thermal izolation performances of building elements which delimite from exterior the inter...

Within National Strategy for Sustainable Development of Romania, the termes foreseen on action groups for the implementation of Stockholm Convention regarding Persistent Organic Pollutants (POPs) are correlated with the existing plans at national and European levels considering the time horizons. According to Stockholm Convention referring reductio...

The environmental pollution is a major concern and the global warming a special one, so that the development of effective and non-expensive treatment technologies is required. Large amounts of waste and sludge are landfilled and the degradation of organic substances in landfills results in carbon dioxide and methane emissions. If sludge is to be st...