Pub Date : 2021-10-28DOI: 10.32008/geolinks2021/b1/v3/46
N. Truc, N. Hoang, T. Tu
This study is carried out to determine the capillary rise over time of fine aggregate in different saline media. The obtained results showed that the capillary height in fine aggregate is inversely proportional to the salt concentration of the capillary solution. The aggregate that has a particle size over 2.0 mm shows the best ability to limit capillary rise. The capillary height of the aggregate gets the highest value when there is no salt in the solution and gets the lowest one with the solution at the highest salinity tested, i.e. 33.0 g/L. The obtained results on capillary characteristics lead to an idea of design a shallow foundation that has a function of anti-corrosion, anti-salinity proactively and effectively.
{"title":"CAPILLARY RISE CHARACTERISTICS AND SALTWATER PROPAGATION IN FINE AGGREGATE: TOWARD DEVELOPING THE ANTI-SALINITY SHALLOW FOUNDATION","authors":"N. Truc, N. Hoang, T. Tu","doi":"10.32008/geolinks2021/b1/v3/46","DOIUrl":"https://doi.org/10.32008/geolinks2021/b1/v3/46","url":null,"abstract":"This study is carried out to determine the capillary rise over time of fine aggregate in different saline media. The obtained results showed that the capillary height in fine aggregate is inversely proportional to the salt concentration of the capillary solution. The aggregate that has a particle size over 2.0 mm shows the best ability to limit capillary rise. The capillary height of the aggregate gets the highest value when there is no salt in the solution and gets the lowest one with the solution at the highest salinity tested, i.e. 33.0 g/L. The obtained results on capillary characteristics lead to an idea of design a shallow foundation that has a function of anti-corrosion, anti-salinity proactively and effectively.","PeriodicalId":329177,"journal":{"name":"GEOLINKS Conference Proceedings","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115632548","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 : 1900-01-01DOI: 10.32008/geolinks2021/b1/v3/14
A. Krasnoshtanova, E. Borovkova
"Due to the unfavourable environmental, social and economic situation, the need for the treatment of oncological diseases and diseases associated with impaired activity of the immune system is increasing. A lot of these drugs are made on the basis of nucleic acid components, the industrial production of which is practically non-existent in Russia. Therefore, a task of current interest is to develop the basis of the technology for obtaining components of nucleic acids, which can be widely used in medicine as immunomodulatory, wound-healing, antiviral, and diagnostic medicine, as well as for cancer treatment. Most of the described in literature methods of isolating nucleic acid components from plant, animal and microbial raw materials are based on the use of toxic and expensive organic solvents, that’s why it is impossible to apply these methods outside of laboratory conditions. The most promising source of raw materials for nucleic acids is the biomass of microorganisms (yeast and bacteria) from biomass, since the use of such source makes it possible to quickly obtain a large enough amount of biomass, and, consequently, a larger amount of nucleic acids. This allows obtaining DNA in addition to RNA. RNA and DNA substances can be used to obtain nucleosides and nitrogenous bases, which are also widely used in medicine. The purpose of these studies was to select the conditions for the extraction of RNA and DNA from the biomass of methane-oxidizing bacteria in one technological cycle, as well as to compare the efficiency of alkaline and acid hydrolysis of microbial RNA and DNA. The need for a two-stage extraction of nucleic acids from the biomass of methane-oxidizing bacteria in order to separately extract RNA and DNA was Substantiated. It was ascertained that at the first stage of extraction at a temperature of 90 ° C, pH 9.0 for 90 min, at least 85% of RNA is extracted. After the separation of the extract by centrifugation, the partially denuclearized biomass must be re-processed under the same conditions in order to extract DNA by at least 83%. The modes of concentration of RNA and DNA solutions by ultrafiltration were selected. It was found that in order to achieve effective deposition of nucleic acids at the isoelectric point, the concentration of the RNA solution must be carried out on the UPM-10 membrane at the concentration degree of 7, and the DNA solution on the UPM-100 membrane at the concentration degree 6. The dynamics of decomposition of nucleic-protein complexes in the medium of monoammonium phosphate was investigated. It was shown that the transition of NA into solution by at least 80% is achieved at a monoammonium phosphate concentration of 1.7 M, a temperature of 55 ° C for 90 min. The use of 5-fold washing of oligonucleotide substances with acidified water (pH 2.0) to remove excess mineral impurities was substantiated. А comparative assessment of acid and alkaline hydrolysis of RNA and DNA was carried out in order to obtain derivativ
{"title":"OBTAINING NUCLEIC ACID PREPARATIONS AND THEIR HYDROLYSATES FROM BIOMASS OF METHANE-OXIDIZING BACTERIA","authors":"A. Krasnoshtanova, E. Borovkova","doi":"10.32008/geolinks2021/b1/v3/14","DOIUrl":"https://doi.org/10.32008/geolinks2021/b1/v3/14","url":null,"abstract":"\"Due to the unfavourable environmental, social and economic situation, the need for the treatment of oncological diseases and diseases associated with impaired activity of the immune system is increasing. A lot of these drugs are made on the basis of nucleic acid components, the industrial production of which is practically non-existent in Russia. Therefore, a task of current interest is to develop the basis of the technology for obtaining components of nucleic acids, which can be widely used in medicine as immunomodulatory, wound-healing, antiviral, and diagnostic medicine, as well as for cancer treatment. Most of the described in literature methods of isolating nucleic acid components from plant, animal and microbial raw materials are based on the use of toxic and expensive organic solvents, that’s why it is impossible to apply these methods outside of laboratory conditions. The most promising source of raw materials for nucleic acids is the biomass of microorganisms (yeast and bacteria) from biomass, since the use of such source makes it possible to quickly obtain a large enough amount of biomass, and, consequently, a larger amount of nucleic acids. This allows obtaining DNA in addition to RNA. RNA and DNA substances can be used to obtain nucleosides and nitrogenous bases, which are also widely used in medicine. The purpose of these studies was to select the conditions for the extraction of RNA and DNA from the biomass of methane-oxidizing bacteria in one technological cycle, as well as to compare the efficiency of alkaline and acid hydrolysis of microbial RNA and DNA. The need for a two-stage extraction of nucleic acids from the biomass of methane-oxidizing bacteria in order to separately extract RNA and DNA was Substantiated. It was ascertained that at the first stage of extraction at a temperature of 90 ° C, pH 9.0 for 90 min, at least 85% of RNA is extracted. After the separation of the extract by centrifugation, the partially denuclearized biomass must be re-processed under the same conditions in order to extract DNA by at least 83%. The modes of concentration of RNA and DNA solutions by ultrafiltration were selected. It was found that in order to achieve effective deposition of nucleic acids at the isoelectric point, the concentration of the RNA solution must be carried out on the UPM-10 membrane at the concentration degree of 7, and the DNA solution on the UPM-100 membrane at the concentration degree 6. The dynamics of decomposition of nucleic-protein complexes in the medium of monoammonium phosphate was investigated. It was shown that the transition of NA into solution by at least 80% is achieved at a monoammonium phosphate concentration of 1.7 M, a temperature of 55 ° C for 90 min. The use of 5-fold washing of oligonucleotide substances with acidified water (pH 2.0) to remove excess mineral impurities was substantiated. А comparative assessment of acid and alkaline hydrolysis of RNA and DNA was carried out in order to obtain derivativ","PeriodicalId":329177,"journal":{"name":"GEOLINKS Conference Proceedings","volume":"129 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115462169","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 : 1900-01-01DOI: 10.32008/geolinks2021/b1/v3/40
A. Paraschiv, M. Dima, A. Diaconu, E. Ciuciuc, M. Croitoru
The pedo-climatic conditions specific to sandy soils in southwest Oltenia determine differences in performing different phenophases of growth and development of plants, both between varieties and in the physiological behavior of the same variety under different yield conditions. Therefore, at the Dăbuleni Research and Development Station for Plant Culture on Sands, research was carried out on some physiological, biochemical and production processes at five varieties of bell peppers cultivated in the open fields and solar. Determinations of photosynthesis, foliar transpiration, the biochemical composition of fruits, quantity, and quality of bell pepper production were performed. The physiological and biochemical processes studied were influenced by the environmental conditions specific to each cultivation method, but also by the studied variables. Of the 5 varieties studied, the best results on the biochemical composition of the fruits were recorded at the Artim variety (8.83% total dry substance, 4.60% soluble dry substance, 0.19% acidity, 3.80% carbohydrate and 36.96% vitamin C). The production was between 15,387 t / ha for open-field plants and 108,574 t / ha for plants grown in the solar, the differences between the two cultivation methods being statistically assured as distinctly significant.
西南地区沙质土壤特有的土壤气候条件决定了品种间植物生长发育不同物候期的差异，也决定了同一品种在不同产量条件下的生理行为差异。因此，在dbuleni沙地植物栽培研究与开发站，对露天栽培和日光栽培的5个品种甜椒的一些生理生化和生产过程进行了研究。对甜椒的光合作用、叶片蒸腾作用、果实生化成分、产量和品质进行了测定。所研究的生理生化过程不仅受到每种培养方法所特有的环境条件的影响，还受到所研究变量的影响。在5个品种中，果实生化组成的最佳结果是Artim品种(总干物质8.83%，可溶性干物质4.60%，酸度0.19%，碳水化合物3.80%，维生素C 36.96%)，产量在露天植株15387 t / ha和太阳能植株108574 t / ha之间，两种栽培方式之间的差异有统计学意义。
{"title":"RESEARCH ON THE BEHAVIOR OF AN ASSORTMENT OF BELL PEPPER ON THE SANDY SOILS IN SOUTH-WEST OLTENIA ACCORDING TO THE CULTIVATION METHOD USED","authors":"A. Paraschiv, M. Dima, A. Diaconu, E. Ciuciuc, M. Croitoru","doi":"10.32008/geolinks2021/b1/v3/40","DOIUrl":"https://doi.org/10.32008/geolinks2021/b1/v3/40","url":null,"abstract":"The pedo-climatic conditions specific to sandy soils in southwest Oltenia determine differences in performing different phenophases of growth and development of plants, both between varieties and in the physiological behavior of the same variety under different yield conditions. Therefore, at the Dăbuleni Research and Development Station for Plant Culture on Sands, research was carried out on some physiological, biochemical and production processes at five varieties of bell peppers cultivated in the open fields and solar. Determinations of photosynthesis, foliar transpiration, the biochemical composition of fruits, quantity, and quality of bell pepper production were performed. The physiological and biochemical processes studied were influenced by the environmental conditions specific to each cultivation method, but also by the studied variables. Of the 5 varieties studied, the best results on the biochemical composition of the fruits were recorded at the Artim variety (8.83% total dry substance, 4.60% soluble dry substance, 0.19% acidity, 3.80% carbohydrate and 36.96% vitamin C). The production was between 15,387 t / ha for open-field plants and 108,574 t / ha for plants grown in the solar, the differences between the two cultivation methods being statistically assured as distinctly significant.","PeriodicalId":329177,"journal":{"name":"GEOLINKS Conference Proceedings","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116646640","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 : 1900-01-01DOI: 10.32008/geolinks2021/b1/v3/02
R. Nicolae, Petru Nicolae, Ana-Maria Brăileanu
Climate change is an inevitable and urgent global challenge with long-term implications for the sustainable development of all countries. In order to respond to climate change, it is very important to identify new ways of reducing greenhouse gas emissions. The present paper emphasizes that the use of a greener and more efficient means of transport, such as a highway (in this case Buzău-Focșani) is more beneficial in terms of reducing greenhouse gas emissions than using old infrastructure. Through specific traffic data processing and dispersion modelling, it was shown that the polluting emissions will increase in the next years, in case of using the already existing road, while the use of a sustainable highway provides a downward trend for these emissions. The construction of the highway will have positive effects on air quality, will ensure a good traffic flow, but the benefits will be even greater when the replacing of the existing car fleet (Diesel vehicles) with hybrid and electric vehicles will take place.
{"title":"REDUCING GREENHOUSE GAS EMISSIONS BY IMPLEMENTING SUSTAINABLE INFRASTRUCTURE PROJECTS","authors":"R. Nicolae, Petru Nicolae, Ana-Maria Brăileanu","doi":"10.32008/geolinks2021/b1/v3/02","DOIUrl":"https://doi.org/10.32008/geolinks2021/b1/v3/02","url":null,"abstract":"Climate change is an inevitable and urgent global challenge with long-term implications for the sustainable development of all countries. In order to respond to climate change, it is very important to identify new ways of reducing greenhouse gas emissions. The present paper emphasizes that the use of a greener and more efficient means of transport, such as a highway (in this case Buzău-Focșani) is more beneficial in terms of reducing greenhouse gas emissions than using old infrastructure. Through specific traffic data processing and dispersion modelling, it was shown that the polluting emissions will increase in the next years, in case of using the already existing road, while the use of a sustainable highway provides a downward trend for these emissions. The construction of the highway will have positive effects on air quality, will ensure a good traffic flow, but the benefits will be even greater when the replacing of the existing car fleet (Diesel vehicles) with hybrid and electric vehicles will take place.","PeriodicalId":329177,"journal":{"name":"GEOLINKS Conference Proceedings","volume":"52 23","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120815337","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 : 1900-01-01DOI: 10.32008/geolinks2021/b2/v3/16
D. Demetrashvili, A. Surmava, V. Kukhalashvili
"At the modern stage of the development of Geosciences, the study of hydrothermodynamic and ecological processes occurring in the natural environment (sea, atmosphere, soil), their monitoring and forecasting become very relevant and are a necessary condition for sustainable development of society. The Caucasus region is one of the most difficult regions of the world from the point of view its physical and geographical features. These features include the Black and Caspian Seas and the complex terrain of the Caucasus. The Seas and the atmosphere are unified hydrodynamic systems, between subsystems of which processes of an exchange of energies, momentum and substances continuously take place. One of the most effective ways to study natural and environmental processes is methods of mathematical modeling, which allows reproducing these processes and phenomena and studying the quantitative contribution of various factors to the development of such processes. The purpose of the paper is to discuss the models of the Black Sea and atmospheric dynamics developed at M. Nodia Institute of Geophysics of I. Javakhishvili Tbilisi State University, and some results of their implementation. The model of the Black Sea dynamics is based on a full system of ocean hydro-thermodynamics equations. Its high-resolution version, which is nested in the basin-scale model of the Black Sea dynamics of Marine Hydrophysical Institute (MHI, Sevastopol), is used to forecast main hydrophysical fields for the easternmost part of the Black Sea. The model of the atmospheric dynamics is based on a full system of atmospheric hydro-thermodynamics equations in hydrostatic approximation written in the terrain-following coordinate system and is realized for the extended territory including the eastern part of the Mediterranean Sea and Black and Caspian seas and for the Caucasus region. These models, after some modification will form the basis of the coupled Black Sea-atmosphere limited-area modeling system."
{"title":"MODELING OF DYNAMIC PROCESSES IN THE BLACK SEA AND ATMOSPHERE IN PERSPECTIVE OF THEIR COUPLING FOR THE BLACK SEA REGION","authors":"D. Demetrashvili, A. Surmava, V. Kukhalashvili","doi":"10.32008/geolinks2021/b2/v3/16","DOIUrl":"https://doi.org/10.32008/geolinks2021/b2/v3/16","url":null,"abstract":"\"At the modern stage of the development of Geosciences, the study of hydrothermodynamic and ecological processes occurring in the natural environment (sea, atmosphere, soil), their monitoring and forecasting become very relevant and are a necessary condition for sustainable development of society. The Caucasus region is one of the most difficult regions of the world from the point of view its physical and geographical features. These features include the Black and Caspian Seas and the complex terrain of the Caucasus. The Seas and the atmosphere are unified hydrodynamic systems, between subsystems of which processes of an exchange of energies, momentum and substances continuously take place. One of the most effective ways to study natural and environmental processes is methods of mathematical modeling, which allows reproducing these processes and phenomena and studying the quantitative contribution of various factors to the development of such processes. The purpose of the paper is to discuss the models of the Black Sea and atmospheric dynamics developed at M. Nodia Institute of Geophysics of I. Javakhishvili Tbilisi State University, and some results of their implementation. The model of the Black Sea dynamics is based on a full system of ocean hydro-thermodynamics equations. Its high-resolution version, which is nested in the basin-scale model of the Black Sea dynamics of Marine Hydrophysical Institute (MHI, Sevastopol), is used to forecast main hydrophysical fields for the easternmost part of the Black Sea. The model of the atmospheric dynamics is based on a full system of atmospheric hydro-thermodynamics equations in hydrostatic approximation written in the terrain-following coordinate system and is realized for the extended territory including the eastern part of the Mediterranean Sea and Black and Caspian seas and for the Caucasus region. These models, after some modification will form the basis of the coupled Black Sea-atmosphere limited-area modeling system.\"","PeriodicalId":329177,"journal":{"name":"GEOLINKS Conference Proceedings","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124826777","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 : 1900-01-01DOI: 10.32008/geolinks2021/b1/v3/07
R. Stoicescu, R. Stoicescu, Codrin Gheorghe, Adina Honcea, I. Bratu
Coronaviruses are members of the Coronaviridae family. They are enveloped, non-segmented, positive-sense, single-stranded RNA viruses. Their genome size is about 30 kilobases (kb) which consist, at the 5’ end, of non-structural open reading frames (ORFs: ORF1a, ORF 1b) which code for 16 non structural proteins, and at the 3’ end the genes which code for four structural proteins including membrane (M), envelope (E), spike (S), and nucleocapsid (N) proteins. Due to the rapid spread of COVID-19, a reliable detection method is needed for patient diagnosis especially in the early stages of the disease. WHO has recommended nucleic acid amplification tests such as real-time reverse transcription-polymerase chain reaction (RT-PCR). The assay detects three SARS-CoV-2 RNA targets: the envelope (E) gene, the nucleocapsid (N) gene and a region of the open reading frame (ORF1) of the RNA-dependent RNA polymerase (RdRp) gene from SARS-CoV-2 virus isolate Wuhan-Hu-1. Our study was made in the first 3 months of the year 2021 using the real-time RT PCR results obtained in the Cellular Biology ward of the University Emergency Clinical Hospital. In our lab we are testing the inpatients from the hospital wards (Neurology, Pediatrics, Surgery, Internal medicine, ICU, Cardiology, etc.); we are also testing the outpatients from Dialysis and Oncology, 2 days prior to their therapy; we also test the health care personnel. The number of tests we performed was: in January 1456, with 399 positive results (27.4%), 33 deaths; in February 1273 tests, 221 positive (17.36%), 16 deaths; in March 1471 tests, 373 positive (25.36%), 37 deceased.
{"title":"CONSIDERATIONS ON SARS-COV-2 DIAGNOSIS IN THE LABORATORY OF UNIVERSITY EMERGENCY CLINICAL HOSPITAL OF CONSTANTA","authors":"R. Stoicescu, R. Stoicescu, Codrin Gheorghe, Adina Honcea, I. Bratu","doi":"10.32008/geolinks2021/b1/v3/07","DOIUrl":"https://doi.org/10.32008/geolinks2021/b1/v3/07","url":null,"abstract":"Coronaviruses are members of the Coronaviridae family. They are enveloped, non-segmented, positive-sense, single-stranded RNA viruses. Their genome size is about 30 kilobases (kb) which consist, at the 5’ end, of non-structural open reading frames (ORFs: ORF1a, ORF 1b) which code for 16 non structural proteins, and at the 3’ end the genes which code for four structural proteins including membrane (M), envelope (E), spike (S), and nucleocapsid (N) proteins. Due to the rapid spread of COVID-19, a reliable detection method is needed for patient diagnosis especially in the early stages of the disease. WHO has recommended nucleic acid amplification tests such as real-time reverse transcription-polymerase chain reaction (RT-PCR). The assay detects three SARS-CoV-2 RNA targets: the envelope (E) gene, the nucleocapsid (N) gene and a region of the open reading frame (ORF1) of the RNA-dependent RNA polymerase (RdRp) gene from SARS-CoV-2 virus isolate Wuhan-Hu-1. Our study was made in the first 3 months of the year 2021 using the real-time RT PCR results obtained in the Cellular Biology ward of the University Emergency Clinical Hospital. In our lab we are testing the inpatients from the hospital wards (Neurology, Pediatrics, Surgery, Internal medicine, ICU, Cardiology, etc.); we are also testing the outpatients from Dialysis and Oncology, 2 days prior to their therapy; we also test the health care personnel. The number of tests we performed was: in January 1456, with 399 positive results (27.4%), 33 deaths; in February 1273 tests, 221 positive (17.36%), 16 deaths; in March 1471 tests, 373 positive (25.36%), 37 deceased.","PeriodicalId":329177,"journal":{"name":"GEOLINKS Conference Proceedings","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115104381","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 : 1900-01-01DOI: 10.32008/geolinks2021/b2/v3/08
A. Ioana, D. Marcu, Daniela Luta, B. Ene, D. Juganaru
{"title":"ECOLOGICAL EDUCATION - ELEMENTS OF THE NATIONAL STRATEGY FOR THE SUSTAINABLE DEVELOPMENT OF ROMANIA 2030","authors":"A. Ioana, D. Marcu, Daniela Luta, B. Ene, D. Juganaru","doi":"10.32008/geolinks2021/b2/v3/08","DOIUrl":"https://doi.org/10.32008/geolinks2021/b2/v3/08","url":null,"abstract":"","PeriodicalId":329177,"journal":{"name":"GEOLINKS Conference Proceedings","volume":"188 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121882955","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 : 1900-01-01DOI: 10.32008/geolinks2021/b2/v3/28
Zerrouki Alia, Kara Karima, R. Lilia, R. Malika
The forest of Chettaba is for ecotourism. Managed by the Forest Conservation of Constantine, this site is formed of several forestry species (hardwood and softwood) spread over an area of 3010 ha. The objective of this study is to estimate the viability of this site through the permanent monitoring of the current state of the forest including biodiversity and pressures. The collection of data related to it had recourse to a forest inventory and an inventory of pressures. The condition was assessed by analyzing these components. The various analyses conducted during this study revealed that the forest is subject to biotic and abiotic pressures and average viability. This is induced by a fairly good stand quality (PHF= 333), medium stability (S= 44.45), low mortality (MR = 4.16%) and good future potential (high regeneration rate (RR =231.25%). Grazing, fire and illegal logging are the most important pressures. Despite these pressures, the forest is classified as a viable ecosystem. However, these potentials are insufficient: it is necessary to reduce the pressures and reforest the degraded plots for better conservation of the ecosystem. To this end, the present study suggests management primarily through silvicultural interventions that promote the regeneration of the various species and to include a permanent ecological monitoring system.
{"title":"TREE SPECIES DIVERSITY AND SPATIAL DISTRIBUTION OF HOLM OAK STANDS IN CHETTABA FOREST (ALGERIA)","authors":"Zerrouki Alia, Kara Karima, R. Lilia, R. Malika","doi":"10.32008/geolinks2021/b2/v3/28","DOIUrl":"https://doi.org/10.32008/geolinks2021/b2/v3/28","url":null,"abstract":"The forest of Chettaba is for ecotourism. Managed by the Forest Conservation of Constantine, this site is formed of several forestry species (hardwood and softwood) spread over an area of 3010 ha. The objective of this study is to estimate the viability of this site through the permanent monitoring of the current state of the forest including biodiversity and pressures. The collection of data related to it had recourse to a forest inventory and an inventory of pressures. The condition was assessed by analyzing these components. The various analyses conducted during this study revealed that the forest is subject to biotic and abiotic pressures and average viability. This is induced by a fairly good stand quality (PHF= 333), medium stability (S= 44.45), low mortality (MR = 4.16%) and good future potential (high regeneration rate (RR =231.25%). Grazing, fire and illegal logging are the most important pressures. Despite these pressures, the forest is classified as a viable ecosystem. However, these potentials are insufficient: it is necessary to reduce the pressures and reforest the degraded plots for better conservation of the ecosystem. To this end, the present study suggests management primarily through silvicultural interventions that promote the regeneration of the various species and to include a permanent ecological monitoring system.","PeriodicalId":329177,"journal":{"name":"GEOLINKS Conference Proceedings","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129807929","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 : 1900-01-01DOI: 10.32008/geolinks2021/b2/v3/35
I. Usachev, D. Solomin
Recently, the rapid and almost uncontrollable growth in the consumption of synthetic plastics in many sectors of the economy, especially in the field of packaging, has been a serious concern. Plastic containers are used for packaging food products, medicines, electronic devices, liquids, including those with a higher hazard class, etc. [1]. According to the German Nova-Institute, the global plastic production in 2020 has reached almost 400 Mill. Tons. At the same time, the volume of biodegradable plastics obtained from renewable resources amounted to only 3.5 million tons, i.e., about 1% of the total volume production [2]. Considering that only 25% of plastic waste is recycled, the growing consumption of polymer products is forcing manufacturers to develop biodegradable polymer compositions [3]. The problem has economic and environmental aspects since it is interconnected with the growing need to protect the environment and reduce the cost of raw materials for the production of various products.
{"title":"GLOBAL TRENDS IN BIODEGRADABLE POLYMERS","authors":"I. Usachev, D. Solomin","doi":"10.32008/geolinks2021/b2/v3/35","DOIUrl":"https://doi.org/10.32008/geolinks2021/b2/v3/35","url":null,"abstract":"Recently, the rapid and almost uncontrollable growth in the consumption of synthetic plastics in many sectors of the economy, especially in the field of packaging, has been a serious concern. Plastic containers are used for packaging food products, medicines, electronic devices, liquids, including those with a higher hazard class, etc. [1]. According to the German Nova-Institute, the global plastic production in 2020 has reached almost 400 Mill. Tons. At the same time, the volume of biodegradable plastics obtained from renewable resources amounted to only 3.5 million tons, i.e., about 1% of the total volume production [2]. Considering that only 25% of plastic waste is recycled, the growing consumption of polymer products is forcing manufacturers to develop biodegradable polymer compositions [3]. The problem has economic and environmental aspects since it is interconnected with the growing need to protect the environment and reduce the cost of raw materials for the production of various products.","PeriodicalId":329177,"journal":{"name":"GEOLINKS Conference Proceedings","volume":" 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120829833","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 : 1900-01-01DOI: 10.32008/geolinks2021/b1/v3/53
A. Predajnianska, J. Takács
Thermal baths in Slovakia are producers of wastewater, which hides considerable energy potential. The wastewater from the thermal pools has often exceeds the maximum permissible value of the temperature of the wastewater discharged into the water recipient. As a result, there is undesirable damage to the environment, which results in sanctions for the operators of these facilities. Our aim is to present the concept of a single- and double-step heat recuperation system of waste pool water using applications of various types of heat exchangers or heat pumps. The aim of this application is to ensure a suitable temperature to the discharged waste pool water, efficient use of the energy potential of the waste water and saving of primary energy in the form of geothermal water, thus extending the life of the entire system.
{"title":"THE POSSIBILITY OF USING THE ENERGY POTENTIAL OF WASTE POOL WATER","authors":"A. Predajnianska, J. Takács","doi":"10.32008/geolinks2021/b1/v3/53","DOIUrl":"https://doi.org/10.32008/geolinks2021/b1/v3/53","url":null,"abstract":"Thermal baths in Slovakia are producers of wastewater, which hides considerable energy potential. The wastewater from the thermal pools has often exceeds the maximum permissible value of the temperature of the wastewater discharged into the water recipient. As a result, there is undesirable damage to the environment, which results in sanctions for the operators of these facilities. Our aim is to present the concept of a single- and double-step heat recuperation system of waste pool water using applications of various types of heat exchangers or heat pumps. The aim of this application is to ensure a suitable temperature to the discharged waste pool water, efficient use of the energy potential of the waste water and saving of primary energy in the form of geothermal water, thus extending the life of the entire system.","PeriodicalId":329177,"journal":{"name":"GEOLINKS Conference Proceedings","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121455458","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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