Humaira Kanwal, Muhammad Attique Khan, Asif Nazir, U. Khan, Mazhar Yasin, A. Rehman, Sadaf Noshin, Khuram Riaz, M. Tayyab, M. Asim
Abstract Due to increasing in urbanization, agricultural and various human activities are being increased which caused the contamination of surface water and ground water. Present demand of drinking water is not sufficient which should be safe and clean but it is contaminated now a day’s coming from different sources. Various treatments and methods are adopted to upgrade the quality of drinking water. Water should be free from the various contaminations viz. Organic and Inorganic pollutants, Heavy metals, Pesticides etc. as well as all its parameter like pH, Conductivity, Calcium, Magnesium, Total Hardness, Carbonate, Bicarbonate, Chloride, Total Dissolved Solid, Alkalinity, Sodium Potassium, Nitrate should be within a permissible limit. For this purpose, different samples were collected from different sources. Category 1: piped water, Category 2: Boreholes with hand pump average depth is 30m, Category 3: Society supply line, Category 4: Simple open hand dug wells that do not sealed walls average depth 5m, Category 5: Surface water. These samples were analyzed for their physical-chemical and microbiological quality (pH, Conductivity, Turbidity, Hardness & Total dissolved solids) in order to identify the rate of contamination and suggest appropriate solutions. Different diseases are accrued in human body which is identified due to the contaminated water. By chemical testing, it can be identified and then suggested some methods of treatment to purify the water for drinking purposes. All parameters are confirmed by comparing with World Health Organization (WHO) standards. Results concluded that quality of drinking water have been adequate of category 3 in which drinking water coming from society treatment plant but category 2 also lies within the acceptable range.
{"title":"Analysis of Physical Chemical Drinking Water Quality Parameters in Sialkot","authors":"Humaira Kanwal, Muhammad Attique Khan, Asif Nazir, U. Khan, Mazhar Yasin, A. Rehman, Sadaf Noshin, Khuram Riaz, M. Tayyab, M. Asim","doi":"10.2478/jaes-2022-0008","DOIUrl":"https://doi.org/10.2478/jaes-2022-0008","url":null,"abstract":"Abstract Due to increasing in urbanization, agricultural and various human activities are being increased which caused the contamination of surface water and ground water. Present demand of drinking water is not sufficient which should be safe and clean but it is contaminated now a day’s coming from different sources. Various treatments and methods are adopted to upgrade the quality of drinking water. Water should be free from the various contaminations viz. Organic and Inorganic pollutants, Heavy metals, Pesticides etc. as well as all its parameter like pH, Conductivity, Calcium, Magnesium, Total Hardness, Carbonate, Bicarbonate, Chloride, Total Dissolved Solid, Alkalinity, Sodium Potassium, Nitrate should be within a permissible limit. For this purpose, different samples were collected from different sources. Category 1: piped water, Category 2: Boreholes with hand pump average depth is 30m, Category 3: Society supply line, Category 4: Simple open hand dug wells that do not sealed walls average depth 5m, Category 5: Surface water. These samples were analyzed for their physical-chemical and microbiological quality (pH, Conductivity, Turbidity, Hardness & Total dissolved solids) in order to identify the rate of contamination and suggest appropriate solutions. Different diseases are accrued in human body which is identified due to the contaminated water. By chemical testing, it can be identified and then suggested some methods of treatment to purify the water for drinking purposes. All parameters are confirmed by comparing with World Health Organization (WHO) standards. Results concluded that quality of drinking water have been adequate of category 3 in which drinking water coming from society treatment plant but category 2 also lies within the acceptable range.","PeriodicalId":44808,"journal":{"name":"Journal of Applied Engineering Sciences","volume":"12 1","pages":"47 - 52"},"PeriodicalIF":1.1,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44776169","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}
Abstract The prediction of displacements in earthen dams after seismic loading is necessary to ensure their proper functioning. In this study, the finite element software plaxis 2D is used to model the nonlinear dynamic behavior (elasto-plastic) of the embankment dam solicited by real seismic records. The earth dam considered in our case study is the Taksebt dam located in the north-east of Algeria. The main steps of the modeling are the following: first the dam of Taksebt was analyzed under seismic stresses without water (empty). Then the dam of Taksebt is subjected to the same seismic records with water (full). The comparison of the study cases allows us to estimate the displacements in the two main directions (horizontal and vertical).The results obtained show the ability to estimate the displacements in an embankment dam under seismic excitation. In addition, the analysis time will be reduced considerably by considering the two extreme cases of seismic loading.
{"title":"Modelling of in Earthen Dam Under the Effect of Seismic Loading, Case of the Taksebt Dam (Algeria)","authors":"H. Belmihoub, A. Hamza, N. Mesboua","doi":"10.2478/jaes-2022-0003","DOIUrl":"https://doi.org/10.2478/jaes-2022-0003","url":null,"abstract":"Abstract The prediction of displacements in earthen dams after seismic loading is necessary to ensure their proper functioning. In this study, the finite element software plaxis 2D is used to model the nonlinear dynamic behavior (elasto-plastic) of the embankment dam solicited by real seismic records. The earth dam considered in our case study is the Taksebt dam located in the north-east of Algeria. The main steps of the modeling are the following: first the dam of Taksebt was analyzed under seismic stresses without water (empty). Then the dam of Taksebt is subjected to the same seismic records with water (full). The comparison of the study cases allows us to estimate the displacements in the two main directions (horizontal and vertical).The results obtained show the ability to estimate the displacements in an embankment dam under seismic excitation. In addition, the analysis time will be reduced considerably by considering the two extreme cases of seismic loading.","PeriodicalId":44808,"journal":{"name":"Journal of Applied Engineering Sciences","volume":"12 1","pages":"17 - 26"},"PeriodicalIF":1.1,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43228451","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}
Hassan Ali Hassan Altaffaq Almarashda, I. Baba, A. A. Ramli, A. Memon
Abstract Energy is one of the most fundamental elements to drive economic development. Therefore, it is a significant element of the economic development of UAE. United Arab Emirates (UAE) is keen to exploit the benefits of AI to deliver clean, secure, affordable energy. Thus this paper studied the benefits and user expectations if AI is adopted in the energy sector. This was achieved through a questionnaire amongst the personnel working in the energy sector. From the analysis of 350 completed questionnaire form, this was found that “AI able to increase employees’ job performance”; “AI able to improve the customer retention” and “AI bring positive impact to the organization” are three significant benefits of AI implementation in energy sector. Similarly, “Using AI Technology fits well with the way I work”, “Interacting with AI Technology is often frustrating” and “Assistance is available if facing difficulty using AI Technology” are three major expectations of the users. Further, the difference of the opinions amongst the respondent groups with different level of working experience and working positions was presented based on comparing means. The findings of this study will encourage the practitioners to implement AI in energy sector. This will also enhance the performance of the energy sector.
{"title":"User Expectation and Benefits of Implementing Artificial Intelligence in the UAE Energy Sector","authors":"Hassan Ali Hassan Altaffaq Almarashda, I. Baba, A. A. Ramli, A. Memon","doi":"10.2478/jaes-2022-0001","DOIUrl":"https://doi.org/10.2478/jaes-2022-0001","url":null,"abstract":"Abstract Energy is one of the most fundamental elements to drive economic development. Therefore, it is a significant element of the economic development of UAE. United Arab Emirates (UAE) is keen to exploit the benefits of AI to deliver clean, secure, affordable energy. Thus this paper studied the benefits and user expectations if AI is adopted in the energy sector. This was achieved through a questionnaire amongst the personnel working in the energy sector. From the analysis of 350 completed questionnaire form, this was found that “AI able to increase employees’ job performance”; “AI able to improve the customer retention” and “AI bring positive impact to the organization” are three significant benefits of AI implementation in energy sector. Similarly, “Using AI Technology fits well with the way I work”, “Interacting with AI Technology is often frustrating” and “Assistance is available if facing difficulty using AI Technology” are three major expectations of the users. Further, the difference of the opinions amongst the respondent groups with different level of working experience and working positions was presented based on comparing means. The findings of this study will encourage the practitioners to implement AI in energy sector. This will also enhance the performance of the energy sector.","PeriodicalId":44808,"journal":{"name":"Journal of Applied Engineering Sciences","volume":"12 1","pages":"1 - 10"},"PeriodicalIF":1.1,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46895965","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}
Abstract Water quality modeling has been shown to be a useful tool in strategic water quality management. In this study, HEC-RAS model was employed to assess the water quality of Soan River. The model was calibrated and validated successfully by evaluation through NSE and R2 values. The simulated BOD and DO values were found to be in agreement with the measured values. Furthermore, the findings revealed that the Soan River was polluted downstream of the Kaak Bridge due to industrialization and urbanization along the River’s banks. The HEC-RAS model is a useful tool for managing water quality and making decisions. Furthermore, many situations were investigated in order to provide appropriate options for River water quality management. Sewage effluents, agricultural runoff and industrial effluents were found to be responsible for the high nutrient levels in the River which in turn reduced DO levels and increased BOD. The requirement for comprehensive integrated models that can be used to make defensible decisions is now important for the long-term management of aquatic ecosystems. The uncertainty surrounding the outcomes of integrated modelling studies makes it difficult for water resource managers to execute them.
{"title":"An Integrated Approach for Water Quality Modelling of Soan River Using HEC-RAS","authors":"Zakaullah, N. Ejaz, Awais Zafar","doi":"10.2478/jaes-2022-0017","DOIUrl":"https://doi.org/10.2478/jaes-2022-0017","url":null,"abstract":"Abstract Water quality modeling has been shown to be a useful tool in strategic water quality management. In this study, HEC-RAS model was employed to assess the water quality of Soan River. The model was calibrated and validated successfully by evaluation through NSE and R2 values. The simulated BOD and DO values were found to be in agreement with the measured values. Furthermore, the findings revealed that the Soan River was polluted downstream of the Kaak Bridge due to industrialization and urbanization along the River’s banks. The HEC-RAS model is a useful tool for managing water quality and making decisions. Furthermore, many situations were investigated in order to provide appropriate options for River water quality management. Sewage effluents, agricultural runoff and industrial effluents were found to be responsible for the high nutrient levels in the River which in turn reduced DO levels and increased BOD. The requirement for comprehensive integrated models that can be used to make defensible decisions is now important for the long-term management of aquatic ecosystems. The uncertainty surrounding the outcomes of integrated modelling studies makes it difficult for water resource managers to execute them.","PeriodicalId":44808,"journal":{"name":"Journal of Applied Engineering Sciences","volume":"12 1","pages":"121 - 128"},"PeriodicalIF":1.1,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48339055","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}
Abstract The paper presents a case study for the evaluation and comparison of three calculation methods in terms of taking the water flows resulting from storms and after melting snow for a metropolitan area, whose rainwater catchment system is the most often completely over run, with frequent flooding in the area. The study compares the results of three calculation methods by correlating the relationships and values used in the literature with the real situation determined on several calculation sections, on different water courses in the proposed area. Based on comparisons for the obtained results, the paper presents a series of conclusions that could be useful in urban systems projects.
{"title":"Methods for Estimating Water Flows from Storms and Melting Snow – Case Study","authors":"E. Vitan, A. Hoțupan, C. Cilibiu, V. Stef","doi":"10.2478/jaes-2022-0015","DOIUrl":"https://doi.org/10.2478/jaes-2022-0015","url":null,"abstract":"Abstract The paper presents a case study for the evaluation and comparison of three calculation methods in terms of taking the water flows resulting from storms and after melting snow for a metropolitan area, whose rainwater catchment system is the most often completely over run, with frequent flooding in the area. The study compares the results of three calculation methods by correlating the relationships and values used in the literature with the real situation determined on several calculation sections, on different water courses in the proposed area. Based on comparisons for the obtained results, the paper presents a series of conclusions that could be useful in urban systems projects.","PeriodicalId":44808,"journal":{"name":"Journal of Applied Engineering Sciences","volume":"12 1","pages":"107 - 112"},"PeriodicalIF":1.1,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43802485","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}
K. Cziszter, G. Ionescu, A.F. Sărăcuț-Ardelean, S. Szabó, T. Kovacs, G. Ionescu
Abstract Statistics confirm that in the EU, buildings consume approx. 40% of final energy, which accounts for 36% of total European greenhouse gas production after energy consumption. Energy efficiency measures are urgently needed to effectively reduce greenhouse gas emissions. Decreasing fossil fuel consumption would have a major impact on declining energy demand per unit of gross domestic product. In 2014, European leaders adopted the ambitious Climate and Energy Framework 2030, in which the three key targets were raised: a 40% reduction in greenhouse gas emissions by 2030, a 27% reduction in RES and a 27% increase in energy efficiency. Then, in November 2016, the European Commission (EC) proposed the Clean Energy for All Europeans package, designed to support and accelerates the transition to a carbon-free energy system. This paper comprises a case study of the current situation of these matters in Romania and focuses on steps and methodology of what actions are reliable and available to be put into practice on this matter.
{"title":"Comparative Studies and Research on Energy Optimization of Non-Residential Buildings","authors":"K. Cziszter, G. Ionescu, A.F. Sărăcuț-Ardelean, S. Szabó, T. Kovacs, G. Ionescu","doi":"10.2478/jaes-2022-0004","DOIUrl":"https://doi.org/10.2478/jaes-2022-0004","url":null,"abstract":"Abstract Statistics confirm that in the EU, buildings consume approx. 40% of final energy, which accounts for 36% of total European greenhouse gas production after energy consumption. Energy efficiency measures are urgently needed to effectively reduce greenhouse gas emissions. Decreasing fossil fuel consumption would have a major impact on declining energy demand per unit of gross domestic product. In 2014, European leaders adopted the ambitious Climate and Energy Framework 2030, in which the three key targets were raised: a 40% reduction in greenhouse gas emissions by 2030, a 27% reduction in RES and a 27% increase in energy efficiency. Then, in November 2016, the European Commission (EC) proposed the Clean Energy for All Europeans package, designed to support and accelerates the transition to a carbon-free energy system. This paper comprises a case study of the current situation of these matters in Romania and focuses on steps and methodology of what actions are reliable and available to be put into practice on this matter.","PeriodicalId":44808,"journal":{"name":"Journal of Applied Engineering Sciences","volume":"12 1","pages":"27 - 32"},"PeriodicalIF":1.1,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46492936","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}
A. Saket, S. M. F. Aghda, H. Sadeghi, A. Fahimifar
Abstract In the science of seismology, issues such as the study of tectonic seismic maps and the identification of the behavioural pattern of pre-earthquakes and aftershocks are among the cases that have been proposed as the basis of applied geological studies in recent decades. Accordingly, numerous studies and researches in this field have been carried out in different regions of the world. However, the results of these studies so far have not been able to meet the needs of this field in a practical and practical way, and in this regard, there is a need to provide practical approaches in this field. In order to realize this approach, there is a need for specialized research and case studies in this field in order to be able to present studies on earthquake risk reduction in an institutionalized and practical way by identifying practical patterns. In this study, the basis of the case study, considering the special characteristics of Tasuj earthquake as one of the important earthquakes according to the basic patterns that can be provided in this field for this earthquake has been considered. Also geodetic analysis of Tasuj fault and the other faults studied for estimation of accuracy this analysis for prediction of earthquake. The results of this study indicate that the fault causing the Tasuj earthquake, contrary to what is presented in the fault map of the region and previous reports and articles, is of the strike-slip type, which should be corrected. Also, the analysis of the behavioural pattern of geodetic data, foreshocks and aftershocks as a precursor shows that these patterns can be used in predicting major earthquakes and large aftershocks. To predict the time of large aftershocks in this study, three phases have been used, which are based on changes in depth to magnitude, changes in seismic quiescence to magnitude and depth changes.
{"title":"Analysis and Routing of Basic Parameters of Tasuj Earthquake (April 2013, Northwest of Iran) with an Emphasis on Geodetic Data, Foreshocks and Large Aftershocks","authors":"A. Saket, S. M. F. Aghda, H. Sadeghi, A. Fahimifar","doi":"10.2478/jaes-2021-0020","DOIUrl":"https://doi.org/10.2478/jaes-2021-0020","url":null,"abstract":"Abstract In the science of seismology, issues such as the study of tectonic seismic maps and the identification of the behavioural pattern of pre-earthquakes and aftershocks are among the cases that have been proposed as the basis of applied geological studies in recent decades. Accordingly, numerous studies and researches in this field have been carried out in different regions of the world. However, the results of these studies so far have not been able to meet the needs of this field in a practical and practical way, and in this regard, there is a need to provide practical approaches in this field. In order to realize this approach, there is a need for specialized research and case studies in this field in order to be able to present studies on earthquake risk reduction in an institutionalized and practical way by identifying practical patterns. In this study, the basis of the case study, considering the special characteristics of Tasuj earthquake as one of the important earthquakes according to the basic patterns that can be provided in this field for this earthquake has been considered. Also geodetic analysis of Tasuj fault and the other faults studied for estimation of accuracy this analysis for prediction of earthquake. The results of this study indicate that the fault causing the Tasuj earthquake, contrary to what is presented in the fault map of the region and previous reports and articles, is of the strike-slip type, which should be corrected. Also, the analysis of the behavioural pattern of geodetic data, foreshocks and aftershocks as a precursor shows that these patterns can be used in predicting major earthquakes and large aftershocks. To predict the time of large aftershocks in this study, three phases have been used, which are based on changes in depth to magnitude, changes in seismic quiescence to magnitude and depth changes.","PeriodicalId":44808,"journal":{"name":"Journal of Applied Engineering Sciences","volume":"11 1","pages":"151 - 158"},"PeriodicalIF":1.1,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46170382","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}
Abstract Crushing test and Impact test are very important to estimate strength and toughness characteristics of the road aggregate. Extensive experimental procedures and different sets of equipment are required for these types of aggregate testing. Therefore, the objective of the study is to investigate whether the light compaction test can be a suitable alternative for both these tests. For this experimental procedure, 60 aggregate samples were collected from different rock quarries spread along North-eastern states of India. The specifications of the aggregate samples are kept similar for all of these three test procedures. The result indicates a strong correlation of Light compaction values (LCV) with Aggregate crushing values (ACV) and Aggregate Impact Values (AIV). The R2 values for the relationship was found to be more than 0.9 for both these relationships. It indicates that the LCV can be used to closely predict the ACV and AIV. The root mean square error (RMSE) values estimated based on the actual and predicted values were also found to be low which further concrete the claim that light compaction test can be a suitable alternative for crushing test and impact test of the aggregates.
{"title":"Prediction of Aggregate Impact Values and Aggregate Crushing Values Using Light Compaction Test","authors":"J. Das, Saikat Deb, B. Bharali","doi":"10.2478/jaes-2021-0012","DOIUrl":"https://doi.org/10.2478/jaes-2021-0012","url":null,"abstract":"Abstract Crushing test and Impact test are very important to estimate strength and toughness characteristics of the road aggregate. Extensive experimental procedures and different sets of equipment are required for these types of aggregate testing. Therefore, the objective of the study is to investigate whether the light compaction test can be a suitable alternative for both these tests. For this experimental procedure, 60 aggregate samples were collected from different rock quarries spread along North-eastern states of India. The specifications of the aggregate samples are kept similar for all of these three test procedures. The result indicates a strong correlation of Light compaction values (LCV) with Aggregate crushing values (ACV) and Aggregate Impact Values (AIV). The R2 values for the relationship was found to be more than 0.9 for both these relationships. It indicates that the LCV can be used to closely predict the ACV and AIV. The root mean square error (RMSE) values estimated based on the actual and predicted values were also found to be low which further concrete the claim that light compaction test can be a suitable alternative for crushing test and impact test of the aggregates.","PeriodicalId":44808,"journal":{"name":"Journal of Applied Engineering Sciences","volume":"11 1","pages":"93 - 100"},"PeriodicalIF":1.1,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41314328","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}
Abstract Current paper focuses on the laboratory experiments performed wit aim to test the deformation in the frozen loam soil specimens. Loam frozen soils are subject to the external effects, such as climate and environmental impacts including temperature changes. Soil heave is one of the key features restraining possible area development: construction of buildings, roads and railways. Necessarily, this requires the improvements of methods of the assessment of heave. This research evaluated the compressive strength and deformation in several specimens of the frozen soil. The approach included varying load and physical properties of soil specimens: porosity, pore filling, moisture, density of soil particles and dry soil density. Besides during the experiment, the external conditions were changed: decreased temperature and increased load pressure. The experiment is based on the UPG-MG4-01. The paper presented the laboratory tests of heave and compressive strength of the frozen soils using applied geotechnical methods.
{"title":"Testing Deformation and Compressive Strength of the Frozen Fine-Grained Soils with Changed Porosity and Density","authors":"V. Lemenkov, Polina Lemenkova","doi":"10.2478/jaes-2021-0015","DOIUrl":"https://doi.org/10.2478/jaes-2021-0015","url":null,"abstract":"Abstract Current paper focuses on the laboratory experiments performed wit aim to test the deformation in the frozen loam soil specimens. Loam frozen soils are subject to the external effects, such as climate and environmental impacts including temperature changes. Soil heave is one of the key features restraining possible area development: construction of buildings, roads and railways. Necessarily, this requires the improvements of methods of the assessment of heave. This research evaluated the compressive strength and deformation in several specimens of the frozen soil. The approach included varying load and physical properties of soil specimens: porosity, pore filling, moisture, density of soil particles and dry soil density. Besides during the experiment, the external conditions were changed: decreased temperature and increased load pressure. The experiment is based on the UPG-MG4-01. The paper presented the laboratory tests of heave and compressive strength of the frozen soils using applied geotechnical methods.","PeriodicalId":44808,"journal":{"name":"Journal of Applied Engineering Sciences","volume":"11 1","pages":"113 - 120"},"PeriodicalIF":1.1,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45293467","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}
Abstract One of the most significant aspects which need to be analysed in the case of a building consists in finding that the sound level perceived by listeners is a proper one (Daniela-Roxana Tămaş-Gavrea et all., 2012). Their inconsistent spreading can develop problems in audition which can be solved only by putting in work a number of measures of acoustic rehabilitation. The evaluation of the acoustic quality of a building is a delicate issue, because of the complex system of the sound field contained in closed spaces and the sound features of the outlining surfaces. This paper presents a research on improving the acoustic conditions of a building which initially had a technical-administrative destination and was then converted into an office building (Stanca S.E., 2021). The measures of acoustic protection were recommended with a view to mitigate the noise level under admissible limits in the functional unit under consideration.
在建筑的情况下，需要分析的最重要的方面之一是发现听众感知到的声级是适当的(Daniela-Roxana t - gavrea等人)。, 2012)。它们不一致的扩散会引起听音方面的问题，这些问题只能通过采取一些听觉康复措施来解决。由于封闭空间中包含的复杂声场系统和轮廓表面的声音特征，建筑物的声学质量评估是一个微妙的问题。本文介绍了一项关于改善建筑物声学条件的研究，该建筑物最初具有技术行政目的，然后被转换为办公楼(Stanca s.e.， 2021)。建议采取声学保护措施，以期将所考虑的功能单元的噪音水平降低到可接受的限度之内。
{"title":"Improving Building Acoustics","authors":"Simona Stanca","doi":"10.2478/jaes-2021-0018","DOIUrl":"https://doi.org/10.2478/jaes-2021-0018","url":null,"abstract":"Abstract One of the most significant aspects which need to be analysed in the case of a building consists in finding that the sound level perceived by listeners is a proper one (Daniela-Roxana Tămaş-Gavrea et all., 2012). Their inconsistent spreading can develop problems in audition which can be solved only by putting in work a number of measures of acoustic rehabilitation. The evaluation of the acoustic quality of a building is a delicate issue, because of the complex system of the sound field contained in closed spaces and the sound features of the outlining surfaces. This paper presents a research on improving the acoustic conditions of a building which initially had a technical-administrative destination and was then converted into an office building (Stanca S.E., 2021). The measures of acoustic protection were recommended with a view to mitigate the noise level under admissible limits in the functional unit under consideration.","PeriodicalId":44808,"journal":{"name":"Journal of Applied Engineering Sciences","volume":"11 1","pages":"137 - 142"},"PeriodicalIF":1.1,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46067348","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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