Browse

Pd-catalyzed reactions are one of the most widespread in fine organic synthesis. For example, selective hydrogenation of alkynols is used for production of a large variety of terpenoids and also fat-soluble vitamins. The challenge in hydrogenation of triple carbon-carbon bond using Pd nanoparticles (NPs) is to provide high activity, selectivity and stability of catalytic system. This work is devoted to the investigation of the influence of the type of anion (OH-, CO32-, PO43-), which was introduced in the catalyst...

In 1972 at United Nations Conference on the Human Environment in Stockholm was proposed the program of ecological monitoring, which examined the biosphere reserves as the essential part of conservation policy. After that conference, the Soviet Union took the official responsibilities of establishing biosphere reserves on its territory. In 1976 the Soviet academy of sciences established the project of fire biosphere reserves in different parts of Soviet Union to expand ecological monitoring from local to national l...

The mouth areas of the seas are the most interesting and complex objects for studying the distribution of pollutant flows and the factors of their formation. Different approaches can be used to identify pollutant flows and the role of the geochemical barriers, in particular the analysis of the distribution of marker compounds that most clearly reflect the pollution levels themselves and possible sources of their entry into the components of the aquatic systems. Polycyclic aromatic hydrocarbons (PAHs) are considere...

The Homor?ciu River watershed is being a subject to complex phenomena of surface and gully erosion, fluvial erosion, as well as alteration of the vertical and horizontal route of Homor?ciu, generating landslides. The main purpose for which land improvement works were designed and executed in a torrential catchment was to ensure the stability of the slopes, so, to actually ensure the stability of the entire river basin. Through the execution of the soil erosion works on the torrential hydrographic formations it was...

For Romanian agriculture is essential to promote products based on natural extracts. Seaweeds extracts, humic acids, and other natural compounded often enhancing growth, development, abiotic stress tolerance or ability to tolerate plant disease. Many articles show results of using seaweed extracts as biostimulants to improve tolerance to drought or salinity. Most products are extracted from marine algae belonging to the Ascophyllum nodosum species. In our research, we tested the role of SuperFiftyВ® 0-0-8 in reduc...

The analysis of the productive landscape of Poieni and F?r??e?ti villages has been part of an extensive research of the cultural landscape of wooden orthodox churches in the ethnographic area of F?get, in Timi? County, Western part of Romania. The research was developed within the restoration project of the Saint Paraschieva church (1676), part of the national and universal heritage, located in Crivina de Sus village. This work aimed to answer the question ?what are the cultural assets of the Pietroasa commune, an...

The present study aims to highlight the importance of the vegetal organisms, in restoring the natural balance, based on field research. The vegetal layer under its multiple aspects and the complex processes taking place in its framework, as well as its relations with the environmental factors, constitute an essential element in the natural circuit of the environment and a basic component of the geographic layer, indispensable for a complete characterization and understanding of the structure and dynamics of terres...

The protection of natural resources such as soil, water, and biodiversity are of greatest challenges in European Union Bioeconomy Strategy. According to the European Commission there are more than 2.5 million potentially contaminated sites and more than 0.3 million contaminated sites in Europe. Soil remediation is important and gentle technologies such as phytoremediation are more and more appropriate regarding new environmentally friendly actions paradigms. The aim of this research is to show successful Triple he...

Our entire planet is experiencing the dangers of global warming that have gone beyond what implied by climate change. Recently 2017 has been declared all time second warmest year by NOAA on record for the entire globe, while a BBC report from Alaska ?a great thaw of America is coming? suggests that the steady rising trend of summer temperatures every year, making the thaw deeper hence causing the permafrost to become less stable, for which human activity has been the major cause of rise in temperature for past few...

Current stage of development of Russia as a rule-of-law and social state needs new approaches, including legal, on the exploitation and protection of new spaces and resources. The main goal of this article is to analyze the current condition of the legal regulation of the status of Russian Arctic zone from the point of view of environment protection and protection of bioresources, and perspectives of its development and effectiveness. The first part of the article is devoted to the constitutional values which serv...

Air pollution is one of the main factors that affects human health. It may affect our health in many ways both long and short term. Exposure time of air pollution increases the risk of respiratory diseases, such as pneumonia, lung cancer, and causes cardiovascular diseases. Air pollution affects different groups of individuals in various ways. An objective of this study was to investigate the level of pollution in snow blanket in Jelgava city after exposition of 7 days and to determine the cause of pollution in di...

The origin of the unusual landforms of Baer?s mounds on the Near-Caspian lowland is not well understood. One of the possible approaches to the understanding of natural history of the region is searching of similar regions. In the many papers the problem of mounds origin is revised but with not of review of geomorphological analogues in the World. Some author states that are not exist of similar landforms anywhere else. The topography characterize by the sets of parallel ridges and hollows / valleys. Range of lengt...

The subject of the study was to characterize three deposit parameters of Pacific polymetallic nodules (the content and the abundance of nickel and the nodule abundance) using classical statistical methods. The input data points come from 448 sampling points of a bed area of about 48,000 km2 in the Clarion-Clipperton fracture zone (approx. 1,000 km west of the coast of Mexico). The sample points formed a pseudoregular grid with an average distance between them of about 10 km. On the basis of these, the basic statis...

The energy security, the energy market and the climate change strategy characterize the current times. This forces us to seek new technologies and to modernize and intensify old technologies. The current strategy also significantly affects the blast furnace iron production and subsequently the production of agglomerate. Agglomerate production is closely related, from the ecological and energy points of view, with the production of coke, which is the basic fuel component of the agglomeration batch. That is coke bre...

The paper presents a structural model of the smart farm to improve environmental protection. This model is based on a digital platform that integrates all the elements that participate directly or indirectly in decision-making into agricultural farm.Retour ligne automatique An intelligent farm must manage optimally and efficiently in the spirit of sustainable agriculture and environmental protection the following components: agricultural lands, farm energy balance, inputs and outputs in accordance with the applica...

The Artificial Intelligence is a measure of the ability to achieve purposes in a complex and dynamic.The recognition of the figures using artificial intelligence has been and is still one of the great problems of the modern era. The attempt of identification of the figures in various forms, the contours and shades has developed an impressive number of algorithms. Up until now it has not been discovered the optimum method and algorithm with an efficiency of 100 % in recognition of the figures.The front work propose...

For the analysis of polyoxometalate functionality (POM), a bioassay was developed in order to determine the effect of the functionalized porous ceramic granule (with POM) on the germination of tomato plantlets (Lycopersicon esculentum) and cowpea (Vigna unguiculata). After 3 days of incubation under dark conditions at room temperature in the case of cowpea seeds and 6 days in the case of tomato seeds, the germination process was calculated and the radicle and hypocotyl growths of the obtained plantlets were biomet...

For the analysis of polyoxometalate functionality (POM), a bioassay was developed in order to determine the effect of the functionalized porous ceramic granule (with POM) on the germination of tomato plantlets (Lycopersicon esculentum) and cowpea (Vigna unguiculata). After 3 days of incubation under dark conditions at room temperature in the case of cowpea seeds and 6 days in the case of tomato seeds, the germination process was calculated and the radicle and hypocotyl growths of the obtained plantlets were biomet...

The present paper shows that the analysis of full flow X-ray activity signals recorded by the ASM (All-Sky Monitor) survey camera of RXTE (Rossi X-ray Timing Explorer) orbital observatory for binary systems allows for not only establishment of some mechanisms of matter accretion in binary star systems but classification depending on manifestation of statistical memory effects as well. As an example, using frequency dependencies of autocorrelators and their derivatives calculated on the basis of Memory Function For...

Bacillus cereus is known could cause intestinal diseases as typical sporogenous contaminant of foods. On the other hand, probiotics form a number of factors to inhibit bacilli growth, e.g. short-chain fatty acids. The patterns of Bacillus cereus ATCC 11778 bacilli specific growth rate reduction by metabolites of bifidobacteria (both in pure substances and when produced in mixed culture) were applied for the model development. These regularities were supposed to be appropriate for prebiotic activity assessment in v...

Bacillus cereus is known could cause intestinal diseases as typical sporogenous contaminant of foods. On the other hand, probiotics form a number of factors to inhibit bacilli growth, e.g. short-chain fatty acids. The patterns of Bacillus cereus ATCC 11778 bacilli specific growth rate reduction by metabolites of bifidobacteria (both in pure substances and when produced in mixed culture) were applied for the model development. These regularities were supposed to be appropriate for prebiotic activity assessment in v...

The present study was conducted to develop a method for utilization of serpentinized ultramafic rocks as mining waste using nature conservation technologies. In this method, the original raw material is thermally activated to obtain an active metastable phase. The goal of the study is to produce a granulated Mg-silicate reagent used to remove heavy metal compounds from solutions. Pentinsuo antigorite, Ozerki soapstone deposit in the Kostomuksha area, Karelia, Russia, and serpophyte from the Pilguj?rvi massif, Pech...

Cast iron, the oldest type of ferrous material for injection molding is also currently the most widely used material in foundries. In particular, this good technological properties (excellent fluidity, low tendency to shrinkage and their formation, low propensity for stress) as well as acceptable mechanical properties and good workability. Similarly, its physical properties and prefer it allows to produce castings with excellent specific characteristics, particularly heat and heat resistant, wear resistant and cas...

This paper presents the effect of fertilizers with nitrogen and phosphorus, applied both unilaterally and in different combinations, on the quality of wheat grains during the period 2014-2017. In this regard, the research was carried out on Ciprian wheat variety, created at SCDA Lovrin, in a long-term experience with fertilizers, founded in 1967. In addition to genetics, the climatic factor and the technological factor play a fundamental role for obtaining superior quality productions for winter wheat, to the deep...

An important source of hydrocarbons is coal which is often associated with oil deposits. In the Volga-Ural oil and gas province (Russian Federation) coal resources in the Visean deposits of the Carboniferous Period exceed 3.5 billion tons. They are located at depths of about 1 km and are inaccessible to mine operations. At the same time, coals can be exploited by well methods as a source of gaseous raw materials. The power gas from coal seams can be used in the development of deposits of high-viscosity oils in adj...

The present study was conducted in order to investigate the effect of various organic food acids, on the proteolytic processes taking place in chicken. A poorly acidic medium favors the process of tenderizers the meat, this being a chemical method of accelerating proteolysis. Citric acid from lemon juice, lactic acid derived from yoghurt and borscht, acetic acid of natural fermentation have been used for this purpose. Meat samples were marinated in these media for 3 days, being preserved at the refrigeration tempe...

The present study was conducted in order to investigate the effect of various organic food acids, on the proteolytic processes taking place in chicken. A poorly acidic medium favors the process of tenderizers the meat, this being a chemical method of accelerating proteolysis. Citric acid from lemon juice, lactic acid derived from yoghurt and borscht, acetic acid of natural fermentation have been used for this purpose. Meat samples were marinated in these media for 3 days, being preserved at the refrigeration tempe...

Background. The issues wound-healing is relevant to the present. Wound-healing is a complex process which involves the accumulation of fibroblasts in the dermal damage zone, the synthesis of scleroproteins, wound retraction, epithelization. A promising direction of research is the creation of application prolonged dosage forms of transdermal appointment based on synthetic polymers and natural origin. At this point, a natural polymer collagen can be considered the most promising raw material in the development of s...

Background. The issues wound-healing is relevant to the present. Wound-healing is a complex process which involves the accumulation of fibroblasts in the dermal damage zone, the synthesis of scleroproteins, wound retraction, epithelization. A promising direction of research is the creation of application prolonged dosage forms of transdermal appointment based on synthetic polymers and natural origin. At this point, a natural polymer collagen can be considered the most promising raw material in the development of s...

A tough requirement for the development of the Partomchorr apatite-nepheline ore deposit containing rare-earth elements is a performance of environmental safety of production, because a sanitary zone of the projected mining and processing plant sides with the boundaries of the existing Simbozersky nature reserve and the created Khibiny national park. The studies have substantiated reasonability of the Partomchorr deposit development by a combined mining method; in the first stage step-by-step mining of four open p...

This paper is an analytic research publication. Its thematic scope is the analysis of the present status of cadastral data in Poland and a proposal of creating a multipurpose cadastre. Real property cadastre in Poland, like similar systems throughout the world, is one of the most important information systems based on spatial information of a surveying and legal nature. The system has had a long tradition historically dating back to the thirteenth century. Over the centuries it was transformed and modernized many ...

The technology of cutting with a laser beam today is a widespread solution for thermally cuttable materials. In mechanical engineering laser technologies currently, belong among the most progressive ways how a person can act on materials within the production process. Machining and processing materials using a laser is based on the conversion of light energy into heat energy. According to the active environment, a distinction can be made between three basic types of lasers - gas, solid state and semiconducting. Th...

The technology of oxy-cutting is a widespread solution for thermally cuttable materials nowadays. This article discusses the use of oxy-cutting technology on CNC machines. This technology is particularly suitable for unalloyed and low-alloy steels and cast steels. With the help of this technology, it is possible to cut sheets ranging from 3 to 1000 mm. For sheets with a thickness of 20 mm it is preferable to use a laser or plasma technology. When cutting with an oxy-fuel the workpiece it is initially heated on the...

More than half of the world population lives in cities. In 2030, 80% of the world population will live in urban areas, according to United Nations migration forecasts. People who are living in cities are exposed to air pollution. The concentration of air pollution is increased by traffic intensity. Increasing traffic intensity increases the number of automobile congestion in large cities. Therefore, there is a need to implement the measures for reducing air pollution in surroundings. Scientific studies show that e...

After more than 40 years of production results indicated necessity to refine the geological model of Sarmatian fluvial reservoirs in an onshore oil field of Moesian Platform , Romania. A stratigraphic analysis was developed to build a new stratigraphic?structural framework. The new 3D seismic was used to incorporate structural data by mapping the system of all normal faults and the unconformity. A new image have been developed for the incised valley. Using concepts of sequence stratigraphy, 3D seismic, biostratigr...

This article presents the effectiveness of three-component geoacoustic research. It is shown by dividing vertical and lateral fluid motions, which makes it possible to reveal and research the casing, interlayer, and interlayer flows of different contents and origin in the hydrocarbon deposits. Geoacoustic signals occur naturally in boreholes because of the dynamic processes located in the volume of near borehole space. The processes are linked with fluid motions (water, oil, gas) or cracks forming inside the rocks...

Universities attract a large number of students and staff who generate thousands of journeys every day. This affects transport systems in European cities and contributes to increasing CO2 emissions, since a significant percent of the journeys are made by car. Therefore, there is a need to influence the academic community?s travel behavior and to encourage staff and students to reduce car journeys and to increase travel by public transport, bike, or by foot. This would result in reduction of the negative effects fr...

It is necessary to determine the amount of starch in order to find effective methods of controlling it in technological flows of paper mills. Enzymatic methods for starch determination based on the selective action of amylolytic enzymes on starch are promising. Water-soluble low molecular weight dextrins are formed when starch is treated with alpha-amylase. Dextrins are then hydrolyzed by glucoamylase to glucose, which is determined by various methods. Material pre-treatment is necessary to increase starch availab...

It is necessary to determine the amount of starch in order to find effective methods of controlling it in technological flows of paper mills. Enzymatic methods for starch determination based on the selective action of amylolytic enzymes on starch are promising. Water-soluble low molecular weight dextrins are formed when starch is treated with alpha-amylase. Dextrins are then hydrolyzed by glucoamylase to glucose, which is determined by various methods. Material pre-treatment is necessary to increase starch availab...

The research object was the D?ugie Lake in Olsztyn (north-eastern Poland) (area 26.8 ha, maximum depth 17.3 m). It is a stratified, bradimictic urban lake - a depth index of 0.3 indicates a deep recess of the lake's bowl in the ground. In the past, the lake was almost completely degraded as a result of the discharge of raw domestic sewage. After applying two methods of restoration (artificial aeration with destratification and the phosphorus inactivation), the quality of lake water was improved. The data of multia...

Building stone quarrying companies in the Republic of Karelia commonly have limited information on the geological structure of a deposit. They do not have their own geological survey, and this type of service is not yet properly offered in Karelia. When product quality problems arise, it is difficult to rapidly find the correct solution. The quality of raw materials at any quarrying stage can be analyzed using GIS applications at the initial stage of quarrying in order to collect and systematize information on the...

This paper studies a hydrographical space with an area of approx. 20,000 km2, located in the NE of Romania. The main objective of the study is to identify and delimit the water bodies (hydrographic microbazins) within the Prut hydrographic basin. This aspect is very important, in order to determine their status, establish future objectives regarding water management and improve or maintain a certain existing status. The methodologies developed by A.N. Apele Rom?ne Bucharest were used for the classification and del...

The article is devoted to the study of regional agriculture using geoinformation technologies. The article focuses attention on the need to apply geoinformation technologies in the process of studying the development of agriculture and rural areas. During the research the main regularities of the development of agriculture at the regional level were revealed. The authors have developed a series of maps reflecting modern processes in the development of the region?s agriculture. The main trends in the development of...

Maritime Differential GPS systems (283.5-325 kHz) are today the basic method for determining the position of vessels in coastal navigation, entering into seaports as well as pilotage around the world. Today, the position accuracy of these systems reaches about 1 m (p = 0.95) and its availability is higher than 99%. In the last decade, many countries, including Poland, have created a number of national and commercial GNSS geodetic networks. Their range often also includes marine waters, hence the use of methods of ...

Decisions related to the choice of investment site selection, made by government administration bodies, have a major impact on the economy in the region. They can cause economic growth or may cause slowing down its development. To avoid or at least minimize the negative effects of investment decisions, they should be taken on the basis of analyzes carried out earlier. Conducting an analysis related to indication the site selection for a given investment object requires obtaining information covering various spatia...

In the era of dynamically changing business environment, planning in an enterprise is a part of decision making process. Therefore, a good prepared action plan is necessary. The rationality of decisions included in the plan depends on the quantity and quality of information available to the decision maker. Enterprises, including coal mines, are a set of interdependent phenomena. For that, we need to create decision support tools, the results of which will be visible in the future. Common tools include methods base...

Spatial information became ordinary for everyday use hidden in different kinds of both paper and web maps, navigation, and map applications. People perceive more than 85% of the information by eyesight. Also, the majority of maps is produced for reading with eyes. Visually impaired including blind people perceive the world differently and have the insufficient amount of possible ways how to investigate the surroundings. Also, creating a particular map for blind people is conceptually different, more expensive and ...

In modern electric drive systems, regardless of the speed control method used, the asynchronous motor power supply tends to be generally made from static frequency converters that can change the amplitude and frequency of the supply voltage. In order to achieve the static converters in which semiconductor materials are used, the latest generation technologies are used. For Silicon Quality Control in industrial processes CryoSAS (Cryogenic Silicon Analysis System) or SiBrickScan (SBS) Silicon Ingot Analyzer are use...

Mesofauna is the most numerous part of soil animals. Mesofauna, along with other soil organisms, can be used as a bioindicator. In addition to the high abundance, tangible biomass and widespread occurrence, the mesofauna is characterized by the ability to respond quickly to changes in the ecosystem, the availability of species identification and the possibility of using the quantitative characteristics associated with the availability of standard conventional isolation methods for comparison. The inhabitants of th...

The most crucial factor influencing economic development and social well-being, as well as resulting in the mitigation of the effects of social poverty is electricity and its availability. As a result, a given country?s growing economy generates an increasingly higher demand for energy. Even though the generation of electricity in the Polish power industry is still primarily based on fossil fuels, there is a visible increase in energy produced from renewable sources. In 2016, in Poland the share of renewable energ...