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Over the next few years, the number of satellites of the currently operating navigation satellite systems (GPS, GLONASS) and those under construction (BDS, Galileo), as well as other supporting solutions, will amount to approx. 140 units. As a result, users of Global Navigation Satellite Systems (GNSS), who nowadays most frequently have mobile phones at their disposal, have an opportunity to simultaneously use satellites of several different constellations. A constant increase in the number of available satellites...

Organs-on-chip allow for establishment of physiologically relevant models of human tissues and organs, and specifically of blood-brain barrier (BBB) and neurovascular unit (NVU) in their normal or pathological state. BBB/NVU integrity and functions are compromised in course of different diseases or injuries, like traumatic brain injury, stroke, multiple sclerosis, arteriovenous malformations, vascular dementia, Alzheimer?s disease, atherosclerosis, brain cancer, inflammation, genetic disorders, and many more. In t...

The interruptions in electrical energy supply are unplanned events, determined by faults of the distribution network?s components, lightning strikes or unauthorized interventions in the distribution networks. Insulation faults, occurring in medium voltage networks, produce transient regimens with overvoltages/ overcurrents of very high values, produce large requests of network, switching equipments, generators and telecommunication systems. Because of this, the neutral point of the secondary transformer in the med...

Synbiotics are defined as a composition of probiotics and prebiotics with synergistic reinforcing effects. In practice, only growth stimulation is often took into account when justifying the effectiveness of a synbiotic composition. However, the effect of prebiotics to the interaction of probiotic and pathogenic bacteria during co-culture fermentation was examined in a range of researches. The influence of commercial prebiotics on the ability of probiotics (bifidobacteria and lactobacilli) to suppress the growth o...

Inorganic arsenic is in very small concentrations a common constituent of surface and groundwater. However, its increased concentration may pose a significant risk to human health in connection with its carcinogenicity (a proven human carcinogen). Therefore, it is necessary to address the reduction of its concentration in drinking water using the most efficient and financially undemanding techniques. The paper analyzes current and new trends in the field of removal of arsenic from drinking water. It focuses mainly...

The suburban zone has become the site of new functionally and stylistically varied development in recent years. It is the result of the search for an alternative form of housing and employment in an attractive environment far away from the inconvenience of the city, yet in its immediate vicinity. The goal of the article is to present new development structures in selected fragments of the suburban zones of Polish cities in terms of their relationships with the core city and their immediate surroundings and how wel...

Treating depression is a complex process, which includes medical treatment and also psychotherapeutic approach. These two approaches are working together. There is a large scale of known treatments for depressive disorders, which had been developed since the 1950s and the therapeutic effectiveness and patient tolerance were assessed through generations. Among the studied variants, anorganic products had been Among the studied variants, anorganic products had been Among the studied variants, anorganic products had ...

Like other European maritime countries, Romania is trying to respond appropriately and to adjust its policies to the current challenges and geopolitical developments. Among the decisive steps made in this regard, is the redefining of its actual maritime space security. A new tool, namely created, tested and commissioned in this regard, within the experimental-demonstrative research project ?Implementation of a geophysical investigation and monitoring tool for Romanian maritime space security ? MAR-S? is a GIS-data...

D-glucose simultaneous catalytic hydro condensation with methylamine can beconsidered a promising way of methylglucamine synthesis. Amines such asmethylamine are reacted with materials such as reducing sugars in hydroxy solventssuch as methanol to prepare N-alkyl polyhydroxy amines. Accordingly, glucose isreacted with methylamine and the resulting adduct is hydrogenated to yield N-methylglucamine. The production of N-methylglucamine as early as 1935 was patentedby American scientists Robert B. Flint and Paul L. Sa...

The human settlements in the Glavacioc river basin located in southern Romania are predominantly rural, the inhabitants occupied with agriculture and animal husbandry. The lack of proper facilities, legislative gaps, insufficient or non-existent control of environmental authorities, poor education regarding environmental protection, led to improper disposal of animal and household waste, permanent sources of soil and groundwater pollution in the area. Among the emitted pollutants the most dangerous are nitrates th...

The main goal of the presented research was to compare the nitrogen use efficiency (NUE) of winter wheat and white clover mixed cropping system (MC) with sole cropping system of winter wheat (SC). The above goal was investigated using lysimetric experiment carried out for two vegetation periods (2012?2014). The experiment consisted of seven variants with different cropping system and level of fertilization: five variants were grown as MC (0 kg N/ha; 112 kg N/ha; 112 kg N/ha + 1.25 L of humic acids/ha; 70 kg N + 0....

Technical lignins are by-products formed in the amount of about 70 million tons annually during the chemical and biochemical processing of plant biomass in the world. Most technical lignins are burned for energy. No more than 2% of technical lignins are supplied to the market mainly in the form of lignosulfonates due to their good solubility and surface activity. Modification of lignosulfonates can improve their properties and expand the field of practical use. In this study, we carried out a modification of sodiu...

Recently, Horava-Lifshitz proposed the theory of quantum gravity, which takes into account the degree of renormalizability in the ultraviolet. This was achieved by anisotropic scaling between space and time, and, therefore, it violates the Lorentz invariance in the ultraviolet range. The infrared limit of a theory reproduces the general theory of relativity for a particular choice of parameter, namely . Lorentz symmetry breaking is performed by preferred foliation of threedimensional space-like hypersurfaces, whic...

This paper presents a cross-sectional analysis of the noise on the navigation bridge of a commercial ship that navigates a section of the Romanian Danube segment. This room is important because here are given all the commands for safe navigation so the conditions inside it must be of the highest quality. Determinations were carried out on the pusher, between Braila and Calarasi, in February 2018, in very difficult weather conditions. The noise was measured with BlueSolo 01dB sonometers. These were placed on the na...

Occupational noise exposure in the workplace is linked with a range of negative effects on human health. Many researchers agree that the noise-induced hearing loss is the second most common form of sensorineural hearing deficit, after the illness of age-related hearing loss. An extended exposure to occupational noise can generates devastating disability that is potentially 100% completely preventable. The hearing deficit begins at the higher frequencies and it develops gradually as a result of chronic exposure to ...

The paper describes the use of methods of visualization and non-destructive investigation of spatial distribution of changes in the structure of the monitored material, which was a cement composite with admixture of blast furnace slag. The test specimens in the shape of the cylinders with a diameter of 24mm and a height of 25mm were placed in an aggressive sulfate environment represented by bacteria of the microorganism Acidithiobacillus thiooxidans for 6 months. To investigate the spatial distribution and the deg...

Adjustment of compositions and processing techniques, mainly ? firing conditions, has been a key route for ceramics performance improvement. The present research addresses sintering process of alumina ceramics with an additive in system that was studied by non-isothermal method. Experimental samples shaped as cylinders 25 ? 6 mm in size were obtained and sintered by consequtive firings in air at heating rates q1 = 1,0 and q2 = 3,0 °?/min without curing and quenched in air. Linear shrinkage (? = ??/?, hereon ? ?) a...

The northern polar region is under the influence of cold temperatures, increasing the effect of snow Arctic aquatic ecosystems affected by climate warming as well as human impact. Different scenarios of climate change show a possibility of temperature increase on 1-2?C and more depending of CO2 emission accounting. All global models give significant valuation to the Arctic exactly. Aquatic ecosystems take several parameters that allow to save their inner stable state and resilience. According to water physical par...

The possibilities of using gravimetric data obtained from global geopotential models (GGM) for the territory of Bulgaria in the processing of precise levelling measurements for the determination of normal differences and geopotential differences are presented in the article. The researches were carried out on first order levelling lines of the State Levelling Network of the Republic of Bulgaria, situated in different topographic conditions, as well as in conditions of different anomalous gravitational field. The d...

Novel micro and nanostructured bioemulsions were created by innovative technologies based on fibrillar cellulose/titanium dioxide/(surfactants mixture: dodecandioyl-diglycine and sucrose diester/ethanol/water, for improved surface properties development with applications in leather industry. The high potential of using cellulose as a material for various applications: in membrane technologies for pollutant absorption, in pharmacy, etc. opens the way to obtaining new added value materials (hybrid micro and nanocomp...

The laser diffraction (LD) is one of the most widely applied grain size measurement methods. The main advantages of LD are: (1) relatively short time of single measurement, (2) low cost of analysis, (3) simplicity of sample preparation, (4) great amount of acquired numerical data. One of the less frequently obtained parameters, often provided only by application of dedicated external hardware, is so-called ?elongation parameter?, ?grain shape factor? or ?grain shape parameter?. Due to the inability of direct expor...

Worldwide, fires have always been a topical issue, being events with a high occurrence probability, followed by significant material and sometimes, human losses. Statistics show a slightly decreasing trend in the number of fires reported in recent years, respectively in terms of casualties, reflecting an increasing focus on fire safety, through national regulations and legal provisions. Fire sprinkler systems frame into the category of active fire protection and control systems. They are fire extinguishers using d...

Stability analysis of underground excavations, such as tunnels, the most important parameters in the design of these structures. Because long-life underground structures should be according to their use. On the other hand, the amount and quality of tunnel excavation are depending on various parameters including geology risks and different type of rocks. So, for the optimal stability, mechanical behavior of the rock mass should be known. The current essay considers the showing stability and designed of Dezh-mandeh ...

The article deals with a numerical simulation of the forced airflow around a heat exchanger with the finned tubes in the electrotechnical box, by finite volume method in the program Fluent implemented in the program ANSYS Workbench. The work contains an analysis of the impact of forced airflow on the heat exchanger with the various placed the electrical components. The primary objective of this work is to analyze and evaluate the numerical simulation models to optimize the forced flow around the heat exchanger and...

The use of the trenchless method of laying underground communications is a profitable alternative to the use of open methods. The method of vibro-impact immersion of steel pipes with an open front end into the ground is widely used. Regular cleaning of the pipe from the formed soil core is one of the most important operations in this technology. The parameters of the soil plug (density, linear dimensions) depend on the physical and mechanical properties of the soil in which the work is performed. The purpose of th...

Carabids are an important family of predatory species that regulate harmful insect species from fruit plantations. The researches made clearly show the structure of the taxa, their dynamics and their abundance.In order to collect the biological material from the apple fruit tree plantations, were used soil traps type Barber, which in each of the two years of research (2017-2018) was represented by six traps placed at ground level in the row of trees, and as a liquid we used a salt solution with 25% concentration. ...

The research was done in some agricultural ecosystems represented by a fruit tree plantation and an autumn wheat crop at SC Loturi Service SRL Delesti, Vaslui County. The collection of entomological material was done using Barber soil traps. In each year of research, studies were conducted over almost the entire growing season, from May to September. The harvesting of the trap was done at intervals ranging from 7 to 14 days, the number being vaied from one year to the next. From the collected material, only the sp...

Ni-P-Sn layers were deposited on the steel strip, with less carbon, by electroless method. An electrolyte based on nickel chloride, sodium hypophosphite, tin chloride and additions for bath optimizing were utilized. The influence on the deposited layers characteristics of different amounts of tin chloride in the nickel bath, respectively, 0.1g/L and 0.4g/L was studied. The conditions for electrolyte formation and optimum working parameters: pH and temperature were set. Ni-P-Sn layers were characterized by comparis...

Risk assessment is a concept introduced for analysing the safety level in workplaces in order to assess if enough and proper precautions have been taken or if their number and quality should be improved so that to prevent hazardous situations. The underground coal mining industry is very hazardous, facing serious fatalities related to work, workplaces and workers as a consequence of the high-risk processes carried out underground and of the hazardous toxic and explosive atmosphere. The use of electrical equipment ...

Aluminium is not essential but could be harmful to human health, being associated with severe diseases of the nervous system, such as Parkinson's disease, amyotrophic lateral sclerosis (Lou Gehrig's disease) and Alzheimer's disease. Dissolved aluminium can become toxic to aquatic life and to the roots of sensitive plant species. Exposure to aluminium from water is a concern in Sofia region since its concentrations occasionally exceed the environmental quality standard for Iskar river, which is the main drinking wa...

Hyperalkaline (pH>10.5) springs are extremely rare. There are only about ten in the entire world. This type of water has been identified in an ultramafic massif in central Serbia, on Mt. Studena, during the course of investigations conducted in 2017. The investigations included prospecting, terrain mapping and sampling, followed by assessment of data collected in situ and from laboratory analyses. The hyperalkaline spring is of the ascending type, its yield is very low (~0.05 L/s), and the water emerges in a diffu...

Currently, the issue of the possible negative influence of nanoparticles on human health is inadequate in comparison with the presentation of their positives. Although there is no questioned their undeniable importance on the other hand experts agree that the precautionary principle and related measures are missing and necessary. The paper presents the pilot results of a grant project focused at the creating a methodological guideline aimed at increasing the level of occupational health and safety management at wo...

The Volga-Ural oil and gas region (Russia) is the most geologically studied. Numerous studies have proved the relationship between neotectonic activity and oil-bearing structures of the sedimentary cover. Previously, a detailed fault map has been compiled for the crystalline basement of the region. In the conditions of depletion of traditional reserves in anticline traps, the most in-demand objects of further hydrocarbon searches are tectonically screened oil accumulation. Remote sensing and GIS techniques were us...

Recognition of the numbers is a necessary condition for the development of 3D street viewers. Using information about the position of the viewer relative to the detected site by self-driving car will make it possible to adjust the path and increase the accuracy of its implementation. The unmanned device (unmanned aerial vehicle or self-driving car) is equipped with a video camera or camcorder system. In the process of detecting house numbers, the image from the camera contains noises and redundant information. The...

The work is devoted to the development of an approach allowing us to visualize complex infrastructure networks. The results of testing various layout algorithms on the plane of the graph representing the complex infastructure network are presented. The method of automatic graph layout is offered, which allows to efficiently perform the layout of a graph of a large-scale infrastructure network. The method of clustering the graph of the infrastructure network, taking into account the strength of the branches and the...

This work initiates a study toward developing and applying computation models of cyber-physical systems on the basis of hexagonal lattice. The focus is on mathematical description of continuous population dynamics combined with dynamic logic used for discrete events. First, we introduce a class of lattice differential equations with time delay simulating interactions within hexagonal pixels. Spatial operator is modeling diffusion-like interaction between hexagonal pixels. We then use the syntax of dynamic logic to...

In the work there is offered approach to determine index of quality of city environment which is used for development of master plan of a city. As an example of application of this methodology there is considered the project of master plan of Ternopil with help of geoinformational system. Over the past two decades the cities of Ukraine are undergoing a new phase of their development, which is associated with a radical change in the economic system (the transition from the planned management to a market economy) wi...

Diapir Folds Zone (= Mio-Pliocene Zone) as major subunit of the Carpathian Foredeep lies between the Buzau and Dambovita valleys and between the folds of the inner Carpathians and the external flanks of the Carpathian Foredeep. This geological unit represents the most prolific zones of accumulation in Romania in which numerous hydrocarbon deposits of Tertiary age have been discovered in more than 150 years of exploration. Diapir Folds Zone can be considered a world class hydrocarbon province having several ?giant?...

Recent online translators for languages without a significant number of speakers cannot reach the quality of the translators for languages such as English, Spanish, and French, etc. The great number of users of these common languages means a higher possibility of correction of an inaccurate translation. For those languages with around ten, twenty million speakers, translators cannot gain such effectivity. All the documents produced in the EU must be translated into all the languages of the EU. Translators that hav...

From geological point of view tailings dam materials are different compared to regular types of soil. In mechanical aspects it is material that has regular mechanical properties like shear parameters and deformation moduli. Based on the huge expansion of the hardening soil model in the last 20 years, this paper discusses the E50 modulus and its relation to some of the well-known physical soil properties. Expressions of E50 in respect to water content, grain size distribution, void ration, site depth and confining ...

One of the important environmental problems in the development of copper ore deposits is the pollution of biological objects located in the zone of influence of mining enterprises. This problem is most relevant for sulfide copper ore deposits, which include a number of heavy metals that are toxic to the environment. Geochemical processes, occurring during the development of such deposits, lead to the entry of heavy metals into the surrounding landscape and their accumulation in the grassy vegetation. It is necessa...

This article deals with the features of legal regulation of administrative liability for environmental offenses in the Russian Federation, as well as the main difficulties encountered of its implementation. The legislator is paying more and more attention to ensuring environmental safety as one of the most important directions of the domestic policy. In this paper there is a conclusion about the variety of legal acts in this sphere at the present stage. Also the authors determine the main modern theoretical and pr...

Contributions to the behavior of rock materials under various conditions provide a practical knowledge about issues relating the performance and long-term serviceability of rocks. In this study, various limestones with varying textural features were investigated in terms of their resistance against magnesium sulfate weathering tests. For this purpose, initial physico-mechanical properties of limestones were determined. Then, rock materials were subjected to magnesium sulfate weathering tests (up to 20 cycles) and ...

Silver and gold nanoparticles have unique antimicrobial and antifungal properties that make them excellent candidates for applications in nanomedicine, tissue engineering and bio-imaging. Green synthesis of metallic nanoparticles is preferred over conventional chemical routes because is eco-friendly, requires no reducing agents and no toxic chemicals result. In the present research study, one-pot green synthesis of noble metallic nanoparticles, namely silver (AgNPs) and gold (AuNPs) nanoparticles, from aqueous ext...

We have developed an online information system of digitized B-images and histological patterns acquired from more than 500 patients. In this system, the data are stored in the form of text and image information. For each patient, there is stored information about anamnesis and diagnosis with B-images and histological patterns of atherosclerotic plaques. Firstly, the database is primarily intended for an experienced neurologist to store clinical data for various clinical studies in neurology. In the second phase, t...

Fluorescence analysis is widely used in various scientific fields. It has many practical applications in biology, medicine and chemistry. Geoscientists can benefit from using it as well. For example, hydrocarbon saturation and carbonate content can be measured by illuminating rock samples with ultraviolet light and evaluating the intensity of emitted visible light. The most interesting case is where the wavelength of the released light is greater than that of the incident light. In geology and geophysics, fluoresc...

In Czechia, climate change is already becoming a reality, and its consequences can be seen in the Czech countryside and landscape, but also in form of water shortages in water supply systems. In Hydrology, the most urgent problem is that the values of the long-term mean flows are decreasing in rivers as well as the yield of groundwater sources. One of the climate change adaptation measures is precise the reservoir capacity and reservoir operation policy in an uncertain condition. That means considered uncertainty ...

Economic dispatching is a significant analytical function associated with the Energy Management System (EMS) activity. Economic dispatch is well-defined as the development of distributing production levels to switchboards so that the organism load is delivered fully and economically. The purpose of static commercial transmission is to calculate the harvested power of each generation division for a certain period of time so that all requirements with minimal cost are met when different technical limitations of the ...

The contribution aims to unify the procedures for the creation of anthropogenic soil profiles in the mining areas of the Ore Mountains foothills (Podkrusnohori) and to present a comprehensive overview of the possibilities of using permanent grasslands in soil protection with a focus on the Usti nad Labem Region in the Podkrusnohori area, especially the wider area of the Most Basin, where the creation of anthropogenic soil profiles is an essential part of the technical reclamation of spoil tip and quarrying sites. ...

This paper proposed an optimized method used for determination of minor elements (Cu, Zn, Mn) from Romanian biomass ash from three different biomass ash using ICP-MS technique. The purpose of the study was to find a suitable method of analysis for the complex matrix of biomass ash by comparing two samples preparation methods: at 5500C and 8200C. For this study the content of metals from three different samples from forestry and related industries (P1), forestry and exploitation (P2) and agriculture (P3) was analyz...