Search results for "Security"
showing 10 items of 1693 documents
The Impact of Copper Ions on Oxidative Stress in Garden Cress Lepidium sativum
2017
Abstract Normal oxygen metabolism is an endogenous source of reactive oxygen species (ROS). The source of ROS are also many environmental factors including heavy metals. In certain concentration range, the presence of ROS is necessary to maintain proper cell function. Thus, cells have many mechanisms, which role is focused on maintaining a constant concentration of ROS. Imbalance between the formation of ROS and action of a protective antioxidant system leads to oxidative stress. This may results with a damage to the structure of proteins, lipids and nucleic acids, which in turn can lead to disturbances in the functioning of the cell and even to the death. The aim of the study was to evalua…
Lead contamination affects the primary productivity traits, biosynthesis of macromolecules and distribution of metal in durum wheat (Triticumdurum L.)
2021
Highlights • The growth, biosynthesis of pigments and other macromolecules appeared to be strong predictors in appraisal of Pb tolerance/susceptibility in durum wheat. • Germplasm of CBD59, CBD63 and CBD66 can be exploited for future selection and breeding programs. • The bioaccumulation of metal in grains of some cultivars of durum wheat much below than permissible limits set by FAO/WHO is of great significance owing to its implications for food safety.
Profiles and Sources of PAHs in Sediments from an Open-Pit Mining Area in the Peruvian Andes
2015
The Peruvian Andes are one of the most productive areas for mining and therefore also one of the most exposed to these sources of pollution. This article reports the characterization of Polycyclic Aromatic Hydrocarbons (PAHs) in sediments of Cerro de Pasco area (Peru) located close to a large open-pit mine and, in recent years, several reports have provided evidence of environmental contamination and related health problems. Investigations were carried out into the fifteen PAHs identified by the US-Environment Protection Agency (US-EPA) as requiring priority monitoring, other non US-EPA listed PAHs and perylene were also investigated in order to obtain further information on their origins. …
Potentially toxic elements in fen peatland soils located near lignite-fired power plants in Central Poland
2021
Abstract The Grojec Valley (GV) peatland area in Central Poland is located close to lignite-fired power plants, which could be sources of potentially toxic elements (PTE). The aims of this study are: (1) to determine the effect of the lignite-fired power plants on soil pollution, (2) to evaluate pollution indices and magnetic susceptibility methods for determining the origin and distribution of PTE in soils, and (3) to demonstrate the importance of appropriate geochemical background (GB) selection for pollution studies in peatland soils. In order to comprehensively assess the soil pollution, four pollution indices (calculated using various types of GBs), and the mass-specific magnetic susce…
Precarious work and social protection: between flexicurity and social pollution
2019
The chapter explores the possibility of changing the way in which any social and legal system guarantees social protections for the weakest workers. To do so it elaborates a unique functional set for classifying all kind of precariat, which it names the ‘un[der]-protected workers’. The issue of the precariat is held as an imbalance in the flexicurity balance, considered akin to pollution in the social environment: so-called social pollution. The proposed method to counterbalance the lack of security/protection and rebalance flexicurity is a ‘(non-wage) Social Security (virtual or) Fake (Pigouvian) Tax’ (the SSFT). The idea is that this device either forces companies to hire through SERs (wh…
Szukając wolności: Sprawa kapitana m/s "Batory" Jana Ćwiklińskiego
2014
After WWII the Polish ocean liner “Batory” operated on the route Gdynia–New York, and from 1951 to India. The captain of the ship was Jan Ćwikliński. The Ministry for Public Security accused him of having a hostile attitude towards the People’s Republic of Poland and insisted on him being removed from his position as Batory captain. In the spring of 1953 the ship underwent a technical check-up at a shipyard in Great Britain. In the mean-time it was rumoured that the captain was to be arrested upon his return to Poland on suspicion of espionage. When the renovation works were about to be completed, Ćwikliński decided to escape and left his ship for good. The captain was given political asylu…
Evaluation of beauvericin and enniatins in Italian cereal products and multicereal food by liquid chromatography coupled to triple quadrupole mass sp…
2013
In this study, 48 multicereal baby foods samples including 25 of pasta and 23 of multicereal baby foods from supermarkets of Campania region (Italy) were analysed for evaluating the presence of beauvericin (BEA) and enniatins (ENs) A, A1, B, B1 and B4. Subsequently to evaluate the risk exposure of Italian population and infant population over the consumption of pasta or multicereal baby food, was, respectively, evaluated. For the above mentioned evaluation, a method developed in our laboratory by liquid chromatography tandem mass spectrometry was used. A liquid phase dispersion procedure was optimised for the simultaneous extraction of BEA and the five ENs from multicereal baby food samples…
Trust in the European Union: What Is It and How Does It Matter?
2018
Bakardijeva Engelbrekt, Bremberg, Michalski, and Oxelheim introduce the concept of trust in the European Union by pointing out its elusive character comprising both interpersonal relations and attitudes towards organizations and broad-based institutions in society. In the early days of integration, trust was primarily connected to the European security community. Then, trust was present mainly among political, economic, and bureaucratic elites while public confidence in European integration took a vaguer form. Today, trust in the EU is challenged by numerous developments, ranging from the deteriorating internal and external security situation and terrorism to rising populism and anti-establ…
High Wage Workers Match with High Wage Firms: Clear Evidence of the Effects of Limited Mobility Bias
2012
Positive assortative matching implies that high productivity workers and firms match together. However, there is almost no evidence of a positive correlation between the worker and firm contributions in two-way fixed-effects wage equations. This could be the result of a bias caused by standard estimation error. Using German social security records we show that the effect of this bias is substantial in samples with limited inter-firm movement. The correlation between worker and firm contributions to wage equations is unambiguously positive.
Brief communication: Vehicle routing problem and UAV application in the post-earthquake scenario
2017
Abstract. In this paper we simulate a Unmanned Aerial Vehicle's (UAV) recognition after a possible case of diffuse damage after a seismic event in the town of Acireale (Sicily, Italy). Given a set of sites (84 relevant buildings) and the range of the UAV, we are able to find the number of vehicles to employ and the shortest survey path. The problem of finding the shortest survey path is an operational research problem called Vehicle Routing Problem (VRP) whose solution is known to be computationally time-consuming. We used the Simulated Annealing (SA) heuristic that is able to provide stable solutions in relatively short computing time. We also examined the distribution of the cost of the s…