Using different methods of statistics, this paper aims to highlight the potential link between antioxidant activity flavonoids and corresponding molecular descriptors. By calculating descriptors (van der Waals surface (A), molar volume (V), partition coefficient (LogP), refractivity (R), polarizability (a), forming heat (Hformation), hydration energy (Ehidr), dipole moment (mt)), together with activities (RSA) calculated or taken from literature, number phenolic -OH groups presence (2)...

This article presents the Ant Colony Optimization algorithm to solve Travelling Salesman Problem. The proposed implements three novel techniques enhance overall performance, lower execution time and reduce negative effects particularly connected with ACO-based methods such as falling into a local optimum issues settings of control parameters for different instances. These include (a) node clustering concept where transition nodes are organised in set clusters, (b) adaptive pheromone...

Technology transfer (TT) is a mechanism designed to accurately make knowledge, innovations, and advancements available the general population. TT conducted through scientific papers, educational governmental initiatives, commercialization of technology. The process per se complex, involving many stakeholders factors that can impact implementation. Feasibility studies are needed assess types technology be transferred, economic options chosen, stimulate receptive part, making understandable...

A sensitive electrochemical method was used for the determination of total phenolic content and antioxidant activity Echinacea purpurea extracts. In this study, 3 glassy carbon electrodes (GCE) were used: one unmodified other two newly manufactured modified with nanotubes (CNTs) chitosan (CS) in different concentrations, having following composition: 1 mg/mL CNTs/CS 5%/GCE 20 0.5%/GCE. The determinations performed on pharmaceutical forms (capsules, tablets tincture), which contain E. pururea...

The article deals with the preparation and possibilities of using combined filtration sorption systems usable for construction folded filters or respirators. studied materials are made several structural layers-a filter membrane polymeric nanofibers, an adsorbent containing active carbon porous silicon dioxide a supporting cover nonwoven bicomponent fabric. layers connected only by pressure at elevated temperature without use binders, according to utility model PUV 31 375. result is compact...

The SiOx barrier nanocoatings have been prepared on selected polymer matrices to increase their resistance against permeation of toxic substances. aim has find out whether the method vacuum plasma deposition a polyethylene terephthalate (PET) foil used by Aluminium Company Canada (ALCAN) company (ALCAN Packaging Kreuzlingen AG (SA/Ltd., Kreuzlingen, Switzerland) within production CERAMIS® packaging materials with properties can also be foils from other polymers organic solvents and liquids....

Currently, setting the obligation to use respiratory protective equipment with a level of protection at least FFP2 in public transport and commercial shopping centers are considered within European Union. Many new products appeared on market these specifications, many symbols have been used. The paper deals meaning selected based respirators markings (which massively, especially after pandemic situation spring 2020), not being uniformly understood well communicated. We also mention discuss...

The main topic of the article is use multicriteria analysis in assessing impact geographical environment on rescue and military activities. evaluation based digital data, influences individual factors are determined by spatial analyses. essence lies design a methodical procedure for determining weights criteria construction suitable resulting user function (utility value function) geographic information system with regard to solved problem verification proposed procedure. Using sensitivity...

In present paper, a miniaturized boron-doped diamond electrode (BDDE) was for the first time used as reliable electrochemical sensor within novel voltammetric protocol rapid and simple determination of dipyridamole (DIP). Cyclic studies uncovered that oxidation DIP shown to be irreversible diffusion-controlled process with single well-developed signal at potential +0.45 V in Britton-Robinson buffer pH 3.0. Using suitable experimental conditions, linearity observed concentration ranges...

Activities specific to the military field, regarding instruction process or missions in operating theatres, require personnel be exposed a series of toxic chemical compounds, with effects ranging from short long term. European legislation environmental protection and employee health has become stricter it directly influences choice materials that will turned into ammunition. Most energetic ammunition contain compounds whose synthesis decomposition involves release high toxicity products...

Employment of simulants, thus spare testing compounds always takes the bigger value in area garments designated for body surface protection against effects chemical warfare agents. The aim simulants usage is mainly to remove problems related manipulation with high toxic and enable such working places that have not got permission treatment agents other highly compounds. paper summarizes some achieved results measurements resistance which been performed based on simulants. These are put into...

Magnesium ferrite (MgFe2O4) particles were synthetized by sol-gel method and used in the decolorization of Acid Violet 109 (anthraquinone dye, AV109) water solutions' combination adsorption heterogeneous Fenton process. The material's morphology elemental analysis surface revealed Scanning electron microscopy Energy Dispersive Spectroscopy (SEM/EDS). X-Ray Diffraction (XRD) technique was to analyze crystallographic phase. In first part experiment, ability synthesized investigated. During...

A moment of permeation both gaseous and liquid phases a toxic compound through barrier material has been indicated colorimetrically at the same time on 20 exposed places using suitable colour indicators. The newly developed device MINITEST is able to evaluate resistivity porous non-porous materials textile character against vapours (permeation) liquids (penetration) in static conditions. As model test chemical either sulfur mustard or significantly alkaline acid volatile have applied. During...