Pub Date : 2019-01-01DOI: 10.17265/2328-2193/2019.04.003
Ramiro Sofronie
The concepts of seismic resilience need a unified terminology and a common reference frame for quantitative evaluation of such resilience. The evaluation can be based on non-dimensional analytical functions related to loss variation within a specified “recovery period”. The path to recovery usually depends on available resources and may take different shapes which can be estimated by proper recovery functions. The loss functions have uncertainties due to the nature of the earthquake, structural behavior and the description of functionality limits. Therefore losses can be described as functions of fragility of systems’ components. These fragility functions can be determined through the use of multidimensional performance limit thresholds, which allow consideration of simultaneously different mechanicalphysical variables. A procedure which defines resilience as function of losses and time recovery based on multidimensional fragility system is formulated and exemplified for a typical California hospital building considering direct and indirect losses in its physical system and in the population served by the system.
{"title":"On the Seismic Resilience","authors":"Ramiro Sofronie","doi":"10.17265/2328-2193/2019.04.003","DOIUrl":"https://doi.org/10.17265/2328-2193/2019.04.003","url":null,"abstract":"The concepts of seismic resilience need a unified terminology and a common reference frame for quantitative evaluation of such resilience. The evaluation can be based on non-dimensional analytical functions related to loss variation within a specified “recovery period”. The path to recovery usually depends on available resources and may take different shapes which can be estimated by proper recovery functions. The loss functions have uncertainties due to the nature of the earthquake, structural behavior and the description of functionality limits. Therefore losses can be described as functions of fragility of systems’ components. These fragility functions can be determined through the use of multidimensional performance limit thresholds, which allow consideration of simultaneously different mechanicalphysical variables. A procedure which defines resilience as function of losses and time recovery based on multidimensional fragility system is formulated and exemplified for a typical California hospital building considering direct and indirect losses in its physical system and in the population served by the system.","PeriodicalId":66051,"journal":{"name":"地质资源与工程:英文版","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67580413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-01-01DOI: 10.17265/2328-2193/2019.04.004
Nasambu Okanya Flavia
The paper is a three step analysis; it seeks to look at the impact of geothermal generation on the economy whether there is a bi-directional causality between economic growth, electricity consumption and electricity generation. Emphasis is being placed on specific source of energy-geothermalto show that it being renewable energy and a comparative least cost source of energy, it will have a significant impact on tariff reduction. By use of Vector Error Correction Model and Granger Causality Test on the data availablefor the period ranging from 1990 to 2016. Assessment is done against the different sectors of the economy to ascertain any correlation/causality between electricity tariff, electricity consumption/electricity generation and the various GDP components/sectors. The results show that reduced energy tariffs results to economic growth in the Construction sector and the Manufacturing sector specifically-bundled up to represent the goods industry and geothermal being the comparative least cost of energy source plays a significant role in increasing electricity consumption resulting from reduced costs and consequently economic growth through the Construction sector, Manufacturing sector, Wholesale and Retail-Goods Industry. Noting the findings, the government should undertake expansion focusing the least cost energy source; consider price discrimination for the low income and the manufacturing industries in order to accelerate electricity access from the current estimate of 48% of the population in both urban and rural areas so as to increase electricity consumption.
{"title":"Effect of Geothermal Generation on Energy Costs and GDP","authors":"Nasambu Okanya Flavia","doi":"10.17265/2328-2193/2019.04.004","DOIUrl":"https://doi.org/10.17265/2328-2193/2019.04.004","url":null,"abstract":"The paper is a three step analysis; it seeks to look at the impact of geothermal generation on the economy whether there is a bi-directional causality between economic growth, electricity consumption and electricity generation. Emphasis is being placed on specific source of energy-geothermalto show that it being renewable energy and a comparative least cost source of energy, it will have a significant impact on tariff reduction. By use of Vector Error Correction Model and Granger Causality Test on the data availablefor the period ranging from 1990 to 2016. Assessment is done against the different sectors of the economy to ascertain any correlation/causality between electricity tariff, electricity consumption/electricity generation and the various GDP components/sectors. The results show that reduced energy tariffs results to economic growth in the Construction sector and the Manufacturing sector specifically-bundled up to represent the goods industry and geothermal being the comparative least cost of energy source plays a significant role in increasing electricity consumption resulting from reduced costs and consequently economic growth through the Construction sector, Manufacturing sector, Wholesale and Retail-Goods Industry. Noting the findings, the government should undertake expansion focusing the least cost energy source; consider price discrimination for the low income and the manufacturing industries in order to accelerate electricity access from the current estimate of 48% of the population in both urban and rural areas so as to increase electricity consumption.","PeriodicalId":66051,"journal":{"name":"地质资源与工程:英文版","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67580486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-01-01DOI: 10.17265/2328-2193/2019.04.001
S. I. Shtel’makh, L. A. Pavlova, T. G. Ryashchenko
The article considers the some features of the Quaternary sediments mineral composition of the development areas of the erosion processes on the territory of the Tunkinsk’s depression. Main objectives of our research are to determine the entering forms of Na, Mg, Al, Si, P, S, K, Ca, Ti, Cr, Mn, Fe, Zn, Cu, Zr, and Ba in the composition of the investigated sediments. The mineral composition was studied by the method of an electron probe X-ray spectral microanalysis (XRM) using wave spectrometers, and the method of X-ray diffraction analysis. The localization centers of Cr, Cu, Zn, Zr, and Ba were established in the mineral composition of the studied sediments. Maximum content of BaO (14.42 wt%) was detected in alkali K-feldspar in the clay sediments of modern alluvial complex (aQ4). Crystallochemical formulas of different minerals were obtained.
{"title":"Features of the Mineral Composition of the Quaternary Sediments of the Development Areas of the Erosion Processes on the Territory of the Tunkinsk’s Depression","authors":"S. I. Shtel’makh, L. A. Pavlova, T. G. Ryashchenko","doi":"10.17265/2328-2193/2019.04.001","DOIUrl":"https://doi.org/10.17265/2328-2193/2019.04.001","url":null,"abstract":"The article considers the some features of the Quaternary sediments mineral composition of the development areas of the erosion processes on the territory of the Tunkinsk’s depression. Main objectives of our research are to determine the entering forms of Na, Mg, Al, Si, P, S, K, Ca, Ti, Cr, Mn, Fe, Zn, Cu, Zr, and Ba in the composition of the investigated sediments. The mineral composition was studied by the method of an electron probe X-ray spectral microanalysis (XRM) using wave spectrometers, and the method of X-ray diffraction analysis. The localization centers of Cr, Cu, Zn, Zr, and Ba were established in the mineral composition of the studied sediments. Maximum content of BaO (14.42 wt%) was detected in alkali K-feldspar in the clay sediments of modern alluvial complex (aQ4). Crystallochemical formulas of different minerals were obtained.","PeriodicalId":66051,"journal":{"name":"地质资源与工程:英文版","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67580260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-28DOI: 10.17265/2328-2193/2018.06.004
A. Okrostsvaridze, K. Aqimidze, N. Gagnidze
Kakheti and Tusheti regions (Eastern Graeter Caucasus) of the Georgia Republic are mainly underlain by highly deformed Lower-Middle Jurassic shales, sandstones, and volcaniclastic rocks, intruded by numerous intrusive bodies of various composition. All units contain a variety of ore mineral deposit types and their surrounding zones of hydrothermal alteration. Continued geological and metallogenic researches in the past 30 years have led to important new information regarding the evolution of this region. Three main stages of magmatic activity are now clearly distinguished. Oldest magmatism comprises Early Jurassic events, related to extensional tectonism, which ranged from rhyolitic, through dacitic and andesitic, and to basaltic magma. Additional extensional processes (in Bajocian) were characterized by intrusion of a gabbro and diorite dike system into recently deposited late Early Jurassic-early Middle Jurassic formations. The final magmatic event was associated with Middle Jurassic folding and uplift during which multiphase diorite plutons were emplaced. Related intense hydrothermal activity was responsible for important polymetallic mineralization, with more than 100 recognized outcropping ore occurrences. A detailed study of 11 of these ore occurrences has indicated anomalous concentrations of gold, thorium, yttrium, cobalt, cadmium, and bismuth. In addition, several new and potentially significant ore mineral occurrences were discovered.
{"title":"Magmarizm and Ore Occurrences of the Kakheti and Tusheti Regions, Greater Caucasus, Georgia Republic","authors":"A. Okrostsvaridze, K. Aqimidze, N. Gagnidze","doi":"10.17265/2328-2193/2018.06.004","DOIUrl":"https://doi.org/10.17265/2328-2193/2018.06.004","url":null,"abstract":"Kakheti and Tusheti regions (Eastern Graeter Caucasus) of the Georgia Republic are mainly underlain by highly deformed Lower-Middle Jurassic shales, sandstones, and volcaniclastic rocks, intruded by numerous intrusive bodies of various composition. All units contain a variety of ore mineral deposit types and their surrounding zones of hydrothermal alteration. Continued geological and metallogenic researches in the past 30 years have led to important new information regarding the evolution of this region. Three main stages of magmatic activity are now clearly distinguished. Oldest magmatism comprises Early Jurassic events, related to extensional tectonism, which ranged from rhyolitic, through dacitic and andesitic, and to basaltic magma. Additional extensional processes (in Bajocian) were characterized by intrusion of a gabbro and diorite dike system into recently deposited late Early Jurassic-early Middle Jurassic formations. The final magmatic event was associated with Middle Jurassic folding and uplift during which multiphase diorite plutons were emplaced. Related intense hydrothermal activity was responsible for important polymetallic mineralization, with more than 100 recognized outcropping ore occurrences. A detailed study of 11 of these ore occurrences has indicated anomalous concentrations of gold, thorium, yttrium, cobalt, cadmium, and bismuth. In addition, several new and potentially significant ore mineral occurrences were discovered.","PeriodicalId":66051,"journal":{"name":"地质资源与工程:英文版","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67580245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-28DOI: 10.17265/2328-2193/2018.06.001
Ana Olivia Barufi Franco-Magalhães, Daniel Françoso de Godoy, Leticia dos Santos Pires
In PCAC (Poços de Caldas Alkaline Complex), in southeastern Brazil, it is observed a polyphase mineralization related to Zr-, U-, Th-, Mo-, and REE-enrichment due to hydromethermal processes which affected alkaline primary rock. Primary Zr-minerals were leached and concentrated as “caldasite”, a rock composed mainly by zircon and baddeleyite in different proportions. Several techniques of mineralogical characterization were applied and results indicated zircon, baddeleyite, magnetite and iron-oxyhydroxides, mainly. Magnetic separation by WHIMS (Wet High-Intensity Magnetic Separation) was performed in order to indicate the efficiency for Fe-concentration removal for potential application in refractory industry.
{"title":"Controlled Reduction of Iron Content in Zirconiun Ore: A Case Study in Polyphase Mineralization, Poços de Caldas Alkaline Plateau","authors":"Ana Olivia Barufi Franco-Magalhães, Daniel Françoso de Godoy, Leticia dos Santos Pires","doi":"10.17265/2328-2193/2018.06.001","DOIUrl":"https://doi.org/10.17265/2328-2193/2018.06.001","url":null,"abstract":"In PCAC (Poços de Caldas Alkaline Complex), in southeastern Brazil, it is observed a polyphase mineralization related to Zr-, U-, Th-, Mo-, and REE-enrichment due to hydromethermal processes which affected alkaline primary rock. Primary Zr-minerals were leached and concentrated as “caldasite”, a rock composed mainly by zircon and baddeleyite in different proportions. Several techniques of mineralogical characterization were applied and results indicated zircon, baddeleyite, magnetite and iron-oxyhydroxides, mainly. Magnetic separation by WHIMS (Wet High-Intensity Magnetic Separation) was performed in order to indicate the efficiency for Fe-concentration removal for potential application in refractory industry.","PeriodicalId":66051,"journal":{"name":"地质资源与工程:英文版","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45920098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-28DOI: 10.17265/2328-2193/2018.06.003
J. Medina, N. Sau, Qutberto Acuña
According the Coulomb earth pressure theory, it is obtained that, for normally consolidated soils, the lateral pressure coefficient of a soil at rest is equal to 1, and it is independent of the soil type, either granular or cohesive; or that the material is in a loose or compact state; hard or a soft cohesive soil. Also, a methodology to calculate the earth pressure for intermediate states between at rest condition and the active pressure is presented. In addition, a methodology to calculate the earth pressure for intermediate states between at rest condition and the passive pressure is presented. Two practical examples are presented: one for a frictionless wall; and another for a coarse wall. Practical recommendations are given for the use of the lateral earth pressure coefficient for different applications.
{"title":"Lateral Earth Pressure Coefficient and Lateral Earth Pressure against Retaining Walls","authors":"J. Medina, N. Sau, Qutberto Acuña","doi":"10.17265/2328-2193/2018.06.003","DOIUrl":"https://doi.org/10.17265/2328-2193/2018.06.003","url":null,"abstract":"According the Coulomb earth pressure theory, it is obtained that, for normally consolidated soils, the lateral pressure coefficient of a soil at rest is equal to 1, and it is independent of the soil type, either granular or cohesive; or that the material is in a loose or compact state; hard or a soft cohesive soil. Also, a methodology to calculate the earth pressure for intermediate states between at rest condition and the active pressure is presented. In addition, a methodology to calculate the earth pressure for intermediate states between at rest condition and the passive pressure is presented. Two practical examples are presented: one for a frictionless wall; and another for a coarse wall. Practical recommendations are given for the use of the lateral earth pressure coefficient for different applications.","PeriodicalId":66051,"journal":{"name":"地质资源与工程:英文版","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47663149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-10-28DOI: 10.17265/2328-2193/2018.05.002
Bożena Potępa, Adam Szynkiewicz, Magdalena Udyrysz-Kraweć
The aim of the GPR research was a non-invasive inspection of the root systems arrangement of selected trees (fir Abies alba and spruce Picea abies), in the Silesian Beskids Landscaped Park and Żywiec Beskids Landscaped Park (Carpathian Mountains, Poland). Field research has been done using RAMAC/GPR with 800 MHz shielded antennas. The survey was conducted by linear profiling to a depth of 2 m. The survey was carried out around the designated trees in 6 meters × 6 meters grids. Base points for X (S-N) and Y (W-E) axis were set in corners of each grid. Parallel GPR traverses were conducted within each study area, at intervals of 0.20 m. The maps of the research areas show existing trees and stumps within the GPR sections, with ±0.1 m error. GPR data analysis was carried out in 2D and 3D systems. Major findings from the GPR survey concluded that the firs (Abies alba), have a “vertical” root system type (with the roots dominant at depths of 0.2-0.8 meters), concentrically away from the tree trunk at a distance of about 1 m to about 2 m, and the spruces (Picea abies), have a “cloud” root system type (at a depth of 10-100 cm), with a few clear, thicker roots extending from the trunk.
{"title":"GPR Survey for Fir (Abies alba) and Spruce (Picea abies) Root Systems in Different Locations in the Western Carpathians Mts. (Poland)","authors":"Bożena Potępa, Adam Szynkiewicz, Magdalena Udyrysz-Kraweć","doi":"10.17265/2328-2193/2018.05.002","DOIUrl":"https://doi.org/10.17265/2328-2193/2018.05.002","url":null,"abstract":"The aim of the GPR research was a non-invasive inspection of the root systems arrangement of selected trees (fir Abies alba and spruce Picea abies), in the Silesian Beskids Landscaped Park and Żywiec Beskids Landscaped Park (Carpathian Mountains, Poland). Field research has been done using RAMAC/GPR with 800 MHz shielded antennas. The survey was conducted by linear profiling to a depth of 2 m. The survey was carried out around the designated trees in 6 meters × 6 meters grids. Base points for X (S-N) and Y (W-E) axis were set in corners of each grid. Parallel GPR traverses were conducted within each study area, at intervals of 0.20 m. The maps of the research areas show existing trees and stumps within the GPR sections, with ±0.1 m error. GPR data analysis was carried out in 2D and 3D systems. Major findings from the GPR survey concluded that the firs (Abies alba), have a “vertical” root system type (with the roots dominant at depths of 0.2-0.8 meters), concentrically away from the tree trunk at a distance of about 1 m to about 2 m, and the spruces (Picea abies), have a “cloud” root system type (at a depth of 10-100 cm), with a few clear, thicker roots extending from the trunk.","PeriodicalId":66051,"journal":{"name":"地质资源与工程:英文版","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67580422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-08-28DOI: 10.17265/2328-2193/2018.04.003
Iskandar Zulkarnain, Waterman Sulistyana Bargawa
The classification of coal resources generally is based on geometric factors and the complexity of geological structures. The classification has not considered coal quality factors such as ash content, sulphur content, caloric value. The development of international classification standards has required a geostatistical analysis for the estimation and classification of coal resources. The purpose of this research is to apply geostatistics method to determine optimal drill hole distance, and to analyze classification of coal resource based on data of coal quality and quantity. Based on global estimation variance (GEV) approach from geostatistics, relative error value was obtained. Drill hole spacing analysis (DHSA) results in optimal drill hole spacing on each coal seam for the coal resources classification. Estimation using kriging block results in the value of kriging relative error. Coal resources classification was based on relative error of 0-10% for measured resources, 10-20% for indicated resources and > 20% for inferred resources. Based on a case study in a coal field consisting of three coal seams, the geostatistical approach produced the smallest distance on seam-3 as the optimal borehole range in the research area. This classification yields a greater area of influence than the SNI standard on simple geological complexity.
{"title":"Classification of Coal Resources Using Drill Hole Spacing Analysis (DHSA)","authors":"Iskandar Zulkarnain, Waterman Sulistyana Bargawa","doi":"10.17265/2328-2193/2018.04.003","DOIUrl":"https://doi.org/10.17265/2328-2193/2018.04.003","url":null,"abstract":"The classification of coal resources generally is based on geometric factors and the complexity of geological structures. The classification has not considered coal quality factors such as ash content, sulphur content, caloric value. The development of international classification standards has required a geostatistical analysis for the estimation and classification of coal resources. The purpose of this research is to apply geostatistics method to determine optimal drill hole distance, and to analyze classification of coal resource based on data of coal quality and quantity. Based on global estimation variance (GEV) approach from geostatistics, relative error value was obtained. Drill hole spacing analysis (DHSA) results in optimal drill hole spacing on each coal seam for the coal resources classification. Estimation using kriging block results in the value of kriging relative error. Coal resources classification was based on relative error of 0-10% for measured resources, 10-20% for indicated resources and > 20% for inferred resources. Based on a case study in a coal field consisting of three coal seams, the geostatistical approach produced the smallest distance on seam-3 as the optimal borehole range in the research area. This classification yields a greater area of influence than the SNI standard on simple geological complexity.","PeriodicalId":66051,"journal":{"name":"地质资源与工程:英文版","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45676005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-08-28DOI: 10.17265/2328-2193/2018.04.001
Aleksandra Risteska, Vlado Gicev
We study response of a shear beam to seismic excitations at its base. The research is conducted using computer simulation of the wave propagation on a numerical model. The wave equation is solved using the method of finite differences (FD) where the spatial and temporal derivatives are approximated with finite differences. We used formulation of the wave equation via the particle velocities, strains, and stresses. Integrating particle velocities in time, we obtained displacements at spatial points. The main goal in this research is to study phenomena occurring due to three different types of boundary conditions, Dirichlet, Neumann, and moving boundary when simple half-sine pulse propagates through 1D medium modeled as a shear beam.
{"title":"The Response of a Shear Beam as 1D Medium to Seismic Excitations Dependent on the Boundary Conditions","authors":"Aleksandra Risteska, Vlado Gicev","doi":"10.17265/2328-2193/2018.04.001","DOIUrl":"https://doi.org/10.17265/2328-2193/2018.04.001","url":null,"abstract":"We study response of a shear beam to seismic excitations at its base. \u0000The research is conducted using computer simulation of the wave propagation on a numerical model. The wave equation is solved using the method of finite differences (FD) where the spatial and temporal derivatives are approximated with finite differences. We used formulation of the wave equation via the particle velocities, strains, and stresses. Integrating particle velocities in time, we obtained displacements at spatial points. The main goal in this research is to study phenomena occurring due to three different types of boundary conditions, Dirichlet, Neumann, and moving boundary when simple half-sine pulse propagates through 1D medium modeled as a shear beam.","PeriodicalId":66051,"journal":{"name":"地质资源与工程:英文版","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67579915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-06-28DOI: 10.17265/2328-2193/2018.03.003
Maksym A. Bogdasarov, Georgii I. Rudko
Geological and evolutionary concept of the genesis of fossil resins: Fossil resins are a special group of natural organic compounds. The work is devoted to the determination of special features of formation, distribution, properties, composition of different types of fossil resins. The paper deals with the evolution of concepts of origin of fossil resins, contains data on the sources of resiniferous vegetation, discusses a problem of succinosis and a role of the chemical impact of mineral medium containing resins on the process of their formation, substantiates prospects of revealing of new resin deposits in the Mesozoic and Cainozoic sedimentations of Northern Eurasia.
{"title":"The Geological-Evolutional Concept of Resin Genesis","authors":"Maksym A. Bogdasarov, Georgii I. Rudko","doi":"10.17265/2328-2193/2018.03.003","DOIUrl":"https://doi.org/10.17265/2328-2193/2018.03.003","url":null,"abstract":"Geological and evolutionary concept of the genesis of fossil resins: Fossil resins are a special group of natural organic compounds. The work is devoted to the determination of special features of formation, distribution, properties, composition of different types of fossil resins. The paper deals with the evolution of concepts of origin of fossil resins, contains data on the sources of resiniferous vegetation, discusses a problem of succinosis and a role of the chemical impact of mineral medium containing resins on the process of their formation, substantiates prospects of revealing of new resin deposits in the Mesozoic and Cainozoic sedimentations of Northern Eurasia.","PeriodicalId":66051,"journal":{"name":"地质资源与工程:英文版","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67579861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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