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Abstract.Graffiti is the main issue in terms of acts of vandalism with public transport. Hardly any suburban train, commuter train or goods train, hardly any engineering building, station or noise barrier wall escape graffiti spraying. This means enormous expenses every year which one would rather use to the benefit of its customers. Furthermore, the temporary and permanent anti-graffiti protection systems used up to now do not ensure adequate graffiti protection. The costs for the application of graffiti protection and/or graffiti removal to a large part depend on the circumstances of the individual case in question, i.e. on the size of the surface, the type and size of the ground, the accessibility of the location and of the fact whether the graffiti need to be removed from unprotected or protected surfaces. A unique innovation based on nanotechnology can provide a durable graffiti protection on a wide range of surfaces at economical prices. The protection makes the application of lettering, images or signatures significantly more difficult, yet facilitates their removal without any harm to the ground surface.

Agriculture is one of the many fields in which nanotechnology is currently applied. At the nano-scale, materials exhibit different properties mainly due to the reduced molecular size which allows different interactions between molecules. Nowadays, the agricultural sector demands methods that not only increase crop productivity, but are also sustainable and produce less environmental impact. Large-scale application of chemical fertilizers is common in farming with the aim of increasing productivity. The use of large doses of fertilizers, however, causes more harm than good. Chemically intensive agriculture disturbs the soil-mineral balance, pollutes soil, water and air, and makes lands less fertile in the long-term. Metal-based nanofertilizers allow effective and precise nutrient management due to their high reactivity, enhanced bioavailability and bioactivity. This paper presents the results derived from the application of metal-based nanofertilizers in different crops of economic relevance, displaying their importance in sustainable agriculture. The trials showed that the metabolic reactions in the plants are enhanced by providing them with the optimum amount of trace elements, which also improves the rate of photosynthesis, increases productivity, and prevents biotic and abiotic stress.

Due to the current pandemic situation caused by SARS-CoV-2 the need of effective precautionary methods is increasing. Besides the transmission of this virus by aerosols induced to air, it is assumed that the transmission route of SARS-CoV-2 is mainly by contaminated surfaces. It has been demonstrated that viruses can contaminate dry surfaces and can be further transmitted to the host even after extended time. The amount of disinfection and hygiene systems has increased drastically over the recent year. Although, the conventional disinfection method via spraying and wiping is labour intensive and efficacy is dependent on the application. Aim of this study was to improve conventional disinfection methods. This new disinfection system based on hydrogen peroxide and silver nanoparticles displays a quick and effective alternative. The composition which was proposed in this study shows unique features in terms of application, health risk and effectivity. The novel application by vaporization helps to disinfect the environment and even the air to reduce virus spreading. New disinfection formulation shows efficacy on the surface proteins and genetic information of the virus. Integration of the effective disinfection method shown in this study in the current precaution measurements will help to reduce the spread of SARS-CoV-2.

This article aims to highlight the most important ideas about internships and school practices from students’ point of view. The paper is structured in three parts. In the first section the topic based on building a career in Romania while being a student is discussed along with the employers’ expectations of having experience for getting a job and the problematic of today educational system. Further on the differences between traineeships and internships are detailed according to the Romanian framework and international sources to see exactly what do these mean and which one weights more for a company at the time of interviewing. Taking into the account what has been mentioned a survey was conducted among students from Faculty of Engineering where 100 replies were received. The questions asked highlighted how often Romanian students are being a part in such an activity, which are means of information they use to find out about the open positions and the students’ degree of satisfaction about the opportunities internships and school practices offer them, on a long-term aspect.