bluuebunny/crossref_metadata_2025_split huggingface dataset:
Isotopic-geochemical characteristics of quartz and pyrite in the Upper Carboniferous rocks of South Verkhoyanye, Northeast Russia: an insight into the genesis of veinlet-disseminated mineralization
Authors: Polufuntikova Lena I. , Fridovsky Valery Yu. , Gamyanin Gennadiy N. 
Published: November 2019

Abstract
Discussed are characteristics of veinlet-disseminated mineralization in the northern part of South Verkhoyanye, in the sections located far away from the known gold deposits. The mineralization is represented mainly by quartz and pyrite enclosed in the Upper Carboniferous terrigenous rocks. Mineralogical-geochemical studies of mineralization are made, and isotopic compositions of oxygen in quartz and sulfur in pyrite are determined. The main trace elements in pyrite are Co, Ni, and Sb, with rare As, Cu, and Zn. Quartz contains significant amounts of Sr, W, and Co. The REE content in quartz is an order of magnitude higher than that seen in chondrites. Pyrite is light in sulfur isotopic composition (δ34S = -2.7… – -7.1%o). Quartz contains isotopically heavy oxygen (δ18O=18.2-19.1%o). The data obtained indicate that the veinlet-disseminated mineralization hosted by the Upper Carboniferous rocks in the northern South Verkhoyanye was developed as a result of metamorphogenic-plutonogenic processes.
C-V Characterization and Electric Parameters of ZrO2 Received by UV Stimulated Plasma Anodizing
Authors: Kushitashvili Z. , Bibilashvili A. , Borisenko V. 
Published: November 2019

Abstract
Low temperature technologies creating metals oxides are a promising solution for formation integral circuit elements. In this report the electric properties of zirconia (ZrO2) received by low temperature (∼ 400° C) UV stimulated plasma anodizing have been investigated. Zirconia is a potential high-k dielectric material with potential applications as agate insulator in transistors. This dielectric distinguished by good electric parameters. For this purpose, we used C-V characterization technic and calculate dielectric constant, flatband voltage, threshold voltage, bulk potential, work function, oxide effective charge, charge concentration. The C-V measurement was carried out on Keithley Instrument Semiconductor Parameter Analyzer 4200, oxide thickness was measured by reflectometer – MprobeVis System.
Negative Impact of Invasive Plants on Riverbank Vegetation
Authors: Vasekova Barbora , Stefunkova Zuzana 
Published: November 2019

Abstract
The research presented in this paper deals with the issue of invasive plant species. Invasive plants are characterized with the high regeneration potential and with a negative effect on populations of our native species and habitats. The occurrence of these plant taxon at a given site is not natural, and their appearance outside of their natural habitat is most often due to anthropogenic activity. Our research is focused on plant species Fallopia japonica and Impatiens glandulifera. The aim of the study is the determination of suppressing possibilities of their negative impact on riverbank vegetation. From the results of the first stage of the research, it is known that plant material is transported downstream, the ability of reproduction of the plant material maintain for at least for 4 weeks, and after being caught on the riverbank, it can establish a new population. The overgrowth of these invasive species presents a risk to the original riverbank vegetation, and the ecological stability is being disturbed. The eradication and prevention system is a necessary solution to this problem. The research is conducted on the Blatina River in Pezinok, Slovakia. The first method of eradication was the mechanical removal of Fallopia japonica. The two selected localities were cut. In the next growing season, an increase in the population of Fallopia japonica was recorded, and one new location was created. The second method of eradication was the chemical method. For chemical eradication, spraying based on the Invasive Plant Removal Guidelines for the Slovak Republic was used. An important finding was that the effectiveness of the chemical eradication is dependent on the area of the sprayed leaves and independent on the concentration of the solution. The next step was the comparison of vegetation cover after mechanical and chemical eradication. A soil probe was performed on two selected areas; area after the mechanical eradication and the area after chemical eradication. A root sample was taken from both areas. Subsequently, the viability of the root system and its stabilizing function with respect to bank erosion were evaluated. The effectiveness of chemical eradication was much stronger. The most optimal way is to remove the plant at their early stage of the growing cycle when the leaf area is smaller. The result is then ecologically and economically more advantageous. After chemical eradication, it is necessary to remove dead plant residues in the autumn to create optimal light and wet conditions for the growth of potential natural vegetation. Invasive plants in riverbank vegetation have a negative impact on stability and potential natural vegetation. The best way to control their incidence is eradication.
Experimental Monitoring of Moisture Conditions in the Various Types of Track Bed Structure
Authors: Pies Juraj , Izvolt Libor , Dobes Peter 
Published: November 2019

Abstract
The principle of designing the railway track structure is based on two baseline assessments. The first assessment verifies the resistance of the railway track structure against the traffic load, which is represented by static and dynamic effects from rail transport. The assessment of railway track structure against the non-traffic load is also important for the correct and relevant design of railway track structure. This load is represented by climatic factors such as frost, water, wind and sunlight. The paper presents the results of experimental monitoring of moisture conditions in the various railway tracks structures. The experimental stand Department of Railway Engineering and Track Management (DRETM) was built for this purpose. The monitoring of thermal regime and water regime of railway track is carried out at this experimental workplace. In the introductory part of the paper are presented individual measuring profiles of the experimental stand DRETM, which were progressively built in a scale 1:1, during the past 7 years. The experimental stand DRETM consists of 6 measuring profiles, which differ from each other by track bed structure and shape of track substructure. The measurement of moisture conditions in individual measuring profiles was performed by a non-destructive method using a TDR test probe. The next part of the paper presents the measured results and the evaluation of the moisture conditions (variation of the moisture conditions) in the individual measuring profiles of the experimental stand DRETM. The final result of this experimental monitoring is represented by the design moisture values of the individual building materials applied to the track bed structure. Subsequently, these moisture values serve for numerical modelling of the non-traffic load on various railway tracks structures.
Machine learning methods for classification of the green infrastructure in city areas
Authors: Kranjcic Nikola , Medak Damir , Zupan Robert , Rezo Milan 
Published: November 2019

Abstract
Reducing green urban infrastructure pose a huge threat to cities sustainability. It is important to monitor and track the health of vegetation. For efficient planning of urban development and maintenance of green urban infrastructure, the key is to have up to date maps. Using satellite imagery is the easiest way to cover large city areas. In order to map vegetation, there are many possible solutions; however, the most effective way is using machine learning methods. Machine learning is divided into supervised and unsupervised classification and each can be divided into several different methods. Many authors have considered different methods and they use them to access accuracy on satellite image information extraction. They have used different satellite images and naturally higher resolution imagery results in better classification. However, there is still lack of comprehensive analysis of more supervised machine learning methods in similar cities. This paper aims to provide analysis of four different machine learning methods: support vector machine, artificial neural network, naïve Bayes and random forest. The objective of the support vector machine algorithm is to find a hyperplane in an N-dimensional space that distinctly classifies the data points where hyperplanes are decision boundaries that help to classify the data points and support vectors data points that are closer to the hyperplane and influence the position and orientation of the hyperplane. Artificial neural networks are brain-inspired systems which are intended to replicate the way that humans learn. Neural networks consist of input and output layers, and hidden layers. They are excellent tools for finding patterns which are far too complex or numerous for a human programmer to extract and teach the machine to recognize. A Naive Bayes classifier is a probabilistic machine learning model that is used for classification task and the crux of the classifier is based on the Bayes theorem. Random Forest creates a forest and makes it random and is an ensemble of Decision Trees, most of the time trained with the bagging method which general idea is that a combination of learning models increases the overall result. All of the mentioned methods will be tested on Sentinel-2A imagery. Sentinel-2A multispectral imager has thirteen sensors which is useful in vegetation extraction. Methods will be compared using error matrix and kappa statistics.
Geochemical features of the compositions of the Mesozoic igneous rocks of the Khokhoi ore field (Upper Amga gold-mining district, Aldan shield, North Asian Craton)
Authors: Ivanov Alexey , Kondratieva Larisa , Loskutov Evgeny , Kravchenko Alexander , Zhuravlev Anatolii , Ermakov Nikolay 
Published: November 2019

Abstract
The article considers features of geochemical composition of the Mesozoic igneous rocks of the Khokhoi ore field, spatially located in the Upper-Amga gold-mining district of the north-western part of the Aldan-Stanovoy shield, at the junction of two large structural units - the Olekma granite-greenstone region and the Aldan granulite-gneiss area, in the zone of meridional deep Amga fault. Magmatic formations are represented by the Northern Boskho, Western Boskho and Upper Khokhoi massifs of the Lebedinsky monzonite-syenite-granite complex, intruding rocks of the crystalline basement and terrigenous-carbonate complex of the Siberian platform cover, and by rare tephrite dikes. Due to the accessibility of the study area, little attention was focused on the mentioned igneous rocks until recently. The study showed that magmatic formations of the ore field are geochemically specialized in lithophile and siderophile elements, and they belong to derivatives of trachy-andesite and andesi-basalt magma. All studied rocks have sufficiently close spectra of rare-earth element distribution, in particular, the rocks are poor in heavy rare-earth elements relative to light rare-earth elements. Presence of low negative Eu-anomaly for the Northern Boskho and Upper Boskho massifs may indicate the fact that they were formed from residual differentiates during fraction crystallization of rock-forming minerals with the involvement of plagioclases. Low Eu/Eu* values also indicate the fact that these rocks were formed during the late stage of the area evolution. Negative niobium anomaly, identified for all igneous rocks of the ore field, indicates magma contamination with continental crust. Considering interpretation of rare-earth elements and their ratio, it was supposed that igneous rocks of the ore field were formed in intracontinental conditions. It was generally concluded that there was an intensive mantle-crust interaction throughout the magmatism evolution of the Khokhoi ore field, beginning from intrusion of tephrite dikes bodies to intrusion of syenite rocks. The presence of long-lived mantle source, as well as contamination with crust material, was responsible for heat and fluid inflow that supplied circulation of thermal spring in the system. Heat and fluids caused additional mobilization of ore material from surrounding rocks, with further formation of gold-sulfide mineralization close to tephrite dikes and the Northern Boskho massif.
The Effect of Oriented Strand Board Substrate Treatments on the Adhesion of Cement Adhesives and Coatings
Authors: Patloka Jiri , Kratochvilova Erika , Slanhof Jiri 
Published: November 2019

Abstract
Thanks to its properties, wood as a building material has unbelievable potential. It simultaneously provides answers to frequently discussed questions concerning the renewability of resources and the energy performance of buildings. The material most frequently used as sheathing for timber structures is planar large-format oriented strand board (OSB). The unfavourable effects of the weather on unprotected wood and timber products can cause changes to the mechanical and chemical properties of the wood, and if unchecked can do irreversible damage. It is therefore always necessary to apply additional surface finishes to sheathing. In the case of peripheral walls, these surface finishes usually comprise an outer thermal insulation system, while in the case of internal surfaces, extra sheathing made from board materials is added via adhesion or mechanical attachment. It is possible to glue extra layers directly onto OSB, but only if suitable adhesives are used, and the range of products is limited. The research described in this article focuses on the treatment of OSB substrate so that it is possible to employ cement adhesives that are commonly used for the gluing of thermal insulation but which cannot normally be used on an untreated base without the danger of adhesion loss. The research concerns a comparison of test specimens with various kinds of penetrative coating or bonding primer applied under predefined conditions and subjected to different forms of applied loading. The contribution contains a definition of the substrate material, test specimens, test methods and a selection of 5 different types of material for the surface treatment of the test specimens. Tables comparing the influence of the individual finishes on the adhesion itself are included in the outputs. The conclusion contains the test results as well as a presentation of the effects of individual treatments, and potential further research is suggested. The results are of benefit to subjects involved in the preparation and realization of construction work that deal not only with timber structures in particular but also with the general use of OSB structures as a part of the building envelope.
Changes in the IDF curves of short-term rainfall in mountainous and lowland areas of Slovakia
Authors: Kohnova Silvia , Foldes Gabriel , Labat Marija Mihaela , Hlavcova Kamila 
Published: November 2019

Abstract
Rainfall intensity-duration-frequency (IDF) curves are of great practical importance in the water resources management, e.g., for the design of hydraulic structures and urban drainage systems, and for the estimation of flash flood risks and flood protection design. Due to the impacts of climate change, there is an evidence that short-term rainfalls have been observed to occur at a higher frequency than before in Europe; the need for a re-evaluation of the design values of short-term rainfall has therefore become important. This study analyzes observed and projected changes in the short-term rainfall events during the warm season (April – October) in an ensemble of a set of Regional Climate Model (RCM) simulations. The analysis was aimed at the seasonality and changes in the scaling exponents that influence the estimation of IDF curves on ungauged sites. The analysis was performed for the selected stations in southern lowland and northern mountainous parts of Slovakia. The characteristics of maximum rainfall events were analyzed for two scenario periods, i.e., one past and one future (1960 – 2000 and 2070 – 2100) and compared to the characteristics of the actual events observed in the past. The main findings from the analysis show a shift in the seasonality, which is different for the rainfall durations and also for the stations analyzed. It can be observed from the comparisons of the IDF that the derived design short-term rainfall values are higher for mountainous regions. A significant difference can be seen in the duration of 240 min. This finding reveals that in the future, very extreme short-term rainfall can be expected in the mountainous areas of Slovakia.
Learning from Tradition: Vernacular Built Heritage of Madeira (Portugal), a Sustainable Proposal
Authors: Martins Ana M.T. , Vieira Elma , Carlos Jorge S. , Nepomuceno Miguel C. S. 
Published: November 2019

Abstract
The archipelago of Madeira (Portugal), of volcanic origin and situated in the intraplate region of the African plate, was formed during the Miocene and seats in a full oceanic domain. Since the settlement of the island (15th century), several destructive landslides have happened. In the Island of Madeira, housing is an important expression of the action of man over nature, thus creating a harmonious landscape between the built and its surroundings. In response to the accentuated Topography, terraced platforms appeared to soften this inclination. Vernacular building traditions are repeatedly cited in the academic literature as exemplary models of environmental practice. Therefore, research that addresses the vernacular traditions of the Island of Madeira may emphasize its potential for continuity and viability for maintenance and rehabilitation. Sustainability is indissolubly linked to vernacular architecture and the lessons learned from this architecture of the past can teach us which knowledge to apply in the future. The demand for sustainable buildings with minimal environmental impact is increasing, thus leading the construction industry to adopt new technologies for building design. Achieved for generations, this architecture shows us the art of a population in the construction. The rural housing of Madeira revealed itself as a wise design, where the masters of the craft created a perfect communion between the space, utility, comfort and the volumetric balance, thus creating a new artificial element that connects perfectly with the natural space. Passive strategies have been used around the world for centuries. In the last decades, inhabitants became dependent on mechanical systems with rising economic and environmental impacts. Learning from the past to understand how houses evolved to respond to the surrounding environment is important. The analysis of the local vernacular dwellings will provide insight into well-adapted popular solutions to deal with the local climatic conditions in order to promote responsive passive building technologies and a sustainable proposal is also presented.
From the Cloister to the City: Approaches to the Cistercian Land Management
Authors: Martins Ana M. T. 
Published: November 2019

Abstract
The first Cistercian monasteries appeared in Portugal in the 12th century. The Portuguese Cistercian monasteries were set to the image of Clairvaux, the Cistercian branch which they mostly came from and which defined the typology of the place. Cistercian foundations were usually built in valleys, but many Portuguese Cistercian monasteries are the result of affiliations rather than foundations. There is a great concentration of monasteries in the north and centre of the country as opposed to all the territory to the south of the river Tagus. History and strong climatic contrasts had their repercussion in the implantation of the Cistercian monasteries in this territory. However, implantation errors happened and, for that reason, it was possible to change the site (as permitted by the Cistercian legislation) that is the change of a monastery from one place to another (as was the case of the Monastery of Santa Maria de Salzedas or the Monastery of S. Pedro das Águias). In a Cistercian monastery, water was an essential resource, not only essential to everyday life, regarding hygiene and energy needs, but it also had a very specific meaning and symbolism. 12th-century Cistercian hydraulic system was something extraordinarily new and water was always a constant element in the choice of Cistercian implantation sites. Some monasteries were the origin of settlements, thus reaching some important features and dimensions. This was the cases of Odivelas, which was settled alongside the Monastery of S. Dinis de Odivelas. and of the city of Alcobaça or Valado dos Frades (former farm of the “Coutos” of Alcobaça). The monastic space can be understood as a territorial organism in the way that it adapts itself to the territory, thus modelling and altering it according to its needs. In fact, this paper aims at discussing this process regarding not only the specificities of Portugal, as a country, but also the specificities of the Cistercian land management since the 12th century: this is from the cloister to the city.
Contribution to the Knowledge of Temperature and Reservoir Depth of Sulphurous Groundwater Aquifer Systems in the Dão River Basin, Portugal
Authors: Teresa Catarina Gomes da Costa , Gomes Luis M. Ferreira , Oliveira Alcino Sousa 
Published: November 2019

Abstract
The sulphurous groundwater aquifer systems of the Dão River basin in Portugal have been the subject of studies by some authors, as there are several Medical Spas, where over time there has been a need to increase their flow rates to guarantee more available mineral water and better quality. It is known that those waters resurface with anomalous temperatures, and that they are associated with very deep aquifer systems where the reservoir temperature is relatively high. Thus, the present work aims to contribute to the knowledge of the reservoir temperature and its depth, in the sense of taking to the planning of construction of deep wells, so that their results to be favourable, allow energy utilization, that function of the temperatures to be obtained, can allow from the production of electricity, to heating of buildings, heating of domestic water, to aqua-ludic uses in medical spas and leisure areas. After presenting the generic aspects of geomorphology, geology, climatic elements, and global conceptualization from the numerical models of the Dão River basin, the results of physical-chemical analyses of groundwater are presented. It should be noted that the groundwaters with the greatest geothermal potential are associated with deep aquifer systems, semi-confined to confined, fissured type (very localized), with sulphurous water, with pH values higher than 8.0, conductivity above 350 μS/cm, and surface temperatures between 15.7 and 50.9°C. It is important noting the occurrence of five main sectors with geothermal potential, which from upstream to downstream of the river basin are: Cavaca, Sezures, Alcafache, Sangemil and Granjal. By applying geothermal thermometers, in the results of physical-chemical analyses of the groundwaters of those sectors, the reservoir temperatures were obtained between 92 and 116°C and also reservoir depths generally greater than 2200m.