Sadaf Noshin, Muhammad Attique Khan, M. Salman, Muhammad Shahzad Aslam, H. Ahmad, A. Rehman, Humaira Kanwal, Abrar Ahmad
Abstract In construction industry, demolished construction waste is recently used as reprocessed aggregate to produce environmentally friendly concrete which is a good substitute to normal crush due to increased demand of ecological growth and conservation benefits. Though, the properties of recycled aggregate concrete are smallest as compared to concrete produced from natural aggregate and these properties can be enhanced by adding some materials having cementitious properties. Rice husk ash (RHA) is used as partial replacement of cement in recycled aggregate concrete to improve the properties as well as to conserve the natural resources. The elementary purpose of this investigation is to determine the compressive strength of concrete by the replacement of cement with different percentages of rice husk ash such as 0%, 7.5%, 10%, 12.5%, 15%, and 17.5% respectively with different curing conditions. For the experimental program approximate 198 cylinders (18 for rapid curing, 90 for normal water curing and 90 for acid curing) are casted with the mix proportion of 1:2:4 and water to cement ratio of 0.50 whereas curing is done at the ages of 3,7,14,21 and 28 days. Various experiments are performed on fresh and hardened concrete to determine the effects of rice husk ash on recycled aggregate concrete with different curing conditions. Linear regression analysis is carried out to determine the compressive strength of concrete. It is pragmatic from the slump test results that the workability of recycled aggregate concrete is decreased by increasing the quantity of rice husk ash. This reduction in slump is due to high water absorption of recycled aggregates and rice husk ash. Further, the compressive strength of recycled aggregate concrete with normal and acid curing is decreased by increasing the percentages of rice husk ash. It is also observed that at 28- days of normal water curing for mix M1,M2,M3,M4,M5 and M6 the compressive strength is increased by 0.96%, 2.74% 1.45%,4.50%,4.23% and 4.22% respectively as compared to the compressive strength values at 28 days of acid water curing. Therefore, it is concluded that recycled aggregate concrete with 10 to 12% of rice husk ash is suitable for properties of concrete. The acid water curing has negative impacts on hardened properties of concrete as it reduced the compressive strength of concrete as compared to normal water curing.
{"title":"Evaluating the Compressive Strength of Concrete Containing Recycled Aggregate in Different Curing Conditions","authors":"Sadaf Noshin, Muhammad Attique Khan, M. Salman, Muhammad Shahzad Aslam, H. Ahmad, A. Rehman, Humaira Kanwal, Abrar Ahmad","doi":"10.2478/jaes-2021-0017","DOIUrl":"https://doi.org/10.2478/jaes-2021-0017","url":null,"abstract":"Abstract In construction industry, demolished construction waste is recently used as reprocessed aggregate to produce environmentally friendly concrete which is a good substitute to normal crush due to increased demand of ecological growth and conservation benefits. Though, the properties of recycled aggregate concrete are smallest as compared to concrete produced from natural aggregate and these properties can be enhanced by adding some materials having cementitious properties. Rice husk ash (RHA) is used as partial replacement of cement in recycled aggregate concrete to improve the properties as well as to conserve the natural resources. The elementary purpose of this investigation is to determine the compressive strength of concrete by the replacement of cement with different percentages of rice husk ash such as 0%, 7.5%, 10%, 12.5%, 15%, and 17.5% respectively with different curing conditions. For the experimental program approximate 198 cylinders (18 for rapid curing, 90 for normal water curing and 90 for acid curing) are casted with the mix proportion of 1:2:4 and water to cement ratio of 0.50 whereas curing is done at the ages of 3,7,14,21 and 28 days. Various experiments are performed on fresh and hardened concrete to determine the effects of rice husk ash on recycled aggregate concrete with different curing conditions. Linear regression analysis is carried out to determine the compressive strength of concrete. It is pragmatic from the slump test results that the workability of recycled aggregate concrete is decreased by increasing the quantity of rice husk ash. This reduction in slump is due to high water absorption of recycled aggregates and rice husk ash. Further, the compressive strength of recycled aggregate concrete with normal and acid curing is decreased by increasing the percentages of rice husk ash. It is also observed that at 28- days of normal water curing for mix M1,M2,M3,M4,M5 and M6 the compressive strength is increased by 0.96%, 2.74% 1.45%,4.50%,4.23% and 4.22% respectively as compared to the compressive strength values at 28 days of acid water curing. Therefore, it is concluded that recycled aggregate concrete with 10 to 12% of rice husk ash is suitable for properties of concrete. The acid water curing has negative impacts on hardened properties of concrete as it reduced the compressive strength of concrete as compared to normal water curing.","PeriodicalId":44808,"journal":{"name":"Journal of Applied Engineering Sciences","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45399898","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, I. Rahman
Abstract Artificial Intelligence (AI) is proved a very effective technique in reducing complexity and making suitable quick decisions for achieving success. Artificial Intelligence is an emerging area and growing fast. It is used successfully in various fields. In UAE also, AI is being used in several sectors. Now the government of UAE has promoted AI in the energy sector to get the maximum of its benefits. Hence, this study evaluated various indicators that affect the promotion of AI in the energy section of the UAE. With the help of a questionnaire survey, 350 questionnaire forms were analyzed to prioritize the parameters affecting AII adoption. From the analysis results it was found that “Organization use AI to provide effective business innovation”, “Organizations use AI to align with its business strategy”, and “Organization use AI to improve the levels of production” are the key motivating factor to adopt AI. Significant parameters of AI technology include are; AI Technology is user friendly, AI Technology is able to improve the quality of the work and AI Technology fits well with the tasks involved; are reported as significant technological parameters to adopt AI. On the other hand, Referral person is required if facing difficulty with AI technology, and teammate support in using AI technology are essential parameters of the human resource management which affect AI adoption in the energy sector of the UAE. In addition, reliability and normality tests validated the data. Hence, these findings can be used to promote AI and understand the situation for making proper decisions.
{"title":"Human Resource Management and Technology Development in Artificial Intelligence Adoption in the UAE Energy Sector","authors":"Hassan Ali Hassan Altaffaq Almarashda, I. Baba, A. A. Ramli, A. Memon, I. Rahman","doi":"10.2478/jaes-2021-0010","DOIUrl":"https://doi.org/10.2478/jaes-2021-0010","url":null,"abstract":"Abstract Artificial Intelligence (AI) is proved a very effective technique in reducing complexity and making suitable quick decisions for achieving success. Artificial Intelligence is an emerging area and growing fast. It is used successfully in various fields. In UAE also, AI is being used in several sectors. Now the government of UAE has promoted AI in the energy sector to get the maximum of its benefits. Hence, this study evaluated various indicators that affect the promotion of AI in the energy section of the UAE. With the help of a questionnaire survey, 350 questionnaire forms were analyzed to prioritize the parameters affecting AII adoption. From the analysis results it was found that “Organization use AI to provide effective business innovation”, “Organizations use AI to align with its business strategy”, and “Organization use AI to improve the levels of production” are the key motivating factor to adopt AI. Significant parameters of AI technology include are; AI Technology is user friendly, AI Technology is able to improve the quality of the work and AI Technology fits well with the tasks involved; are reported as significant technological parameters to adopt AI. On the other hand, Referral person is required if facing difficulty with AI technology, and teammate support in using AI technology are essential parameters of the human resource management which affect AI adoption in the energy sector of the UAE. In addition, reliability and normality tests validated the data. Hence, these findings can be used to promote AI and understand the situation for making proper decisions.","PeriodicalId":44808,"journal":{"name":"Journal of Applied Engineering Sciences","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41817922","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}
R. Hameed, S. mahmood, M. R. Riaz, S. A. Gillani, M. Tahir
Abstract This study is carried out to investigate the effectiveness of using externally applied epoxy mortar on joints of masonry wall panels to enhance their load carrying capacity under axial compressive and lateral loads. A total of six 113 mm thick masonry wall panels of size 1200 x 1200 mm were constructed for this study. Four out of six walls were strengthened using locally available CHEMDUR-31 epoxy mortar on joints. The remaining two walls were tested as control specimens. The control and strengthened wall panels were tested under axial compression and lateral loads. In axial compression test, out of plane central deflection and vertical strain at the center of wall panel were recorded while in lateral load test, in-plane lateral displacement of wall and horizontal strain at the center were recorded at each load increment. Failure pattern of each wall panel is also studied to notice its structural behavior. The results of this experimental study showed an increase of 45% and 60% in load carrying capacity under axial compression and lateral bending, respectively by the use of strengthening technique employed in this study.
摘要本研究旨在探讨外墙环氧砂浆在砌体墙板接缝处施加轴压和侧向荷载对其承载力的提高效果。本次研究共建造了6块113毫米厚的砖石墙板，尺寸为1200 x 1200毫米。六面墙中的四面墙在接缝处使用当地可用的chemdur31环氧砂浆进行加固。其余两面墙作为对照试件进行试验。对控制墙板和加固墙板进行了轴压和侧压试验。在轴压试验中，记录墙板的面外中心挠度和中心垂直应变;在侧载试验中，记录每个荷载增量时墙板的面内侧向位移和中心水平应变。还研究了各壁板的破坏模式，以了解其结构特性。试验研究结果表明，采用本研究所采用的加固技术，在轴压和侧弯下的承载能力分别提高了45%和60%。
{"title":"Strengthening of Un-Reinforced Brick Masonry Walls Using Epoxy Mortar","authors":"R. Hameed, S. mahmood, M. R. Riaz, S. A. Gillani, M. Tahir","doi":"10.2478/jaes-2021-0013","DOIUrl":"https://doi.org/10.2478/jaes-2021-0013","url":null,"abstract":"Abstract This study is carried out to investigate the effectiveness of using externally applied epoxy mortar on joints of masonry wall panels to enhance their load carrying capacity under axial compressive and lateral loads. A total of six 113 mm thick masonry wall panels of size 1200 x 1200 mm were constructed for this study. Four out of six walls were strengthened using locally available CHEMDUR-31 epoxy mortar on joints. The remaining two walls were tested as control specimens. The control and strengthened wall panels were tested under axial compression and lateral loads. In axial compression test, out of plane central deflection and vertical strain at the center of wall panel were recorded while in lateral load test, in-plane lateral displacement of wall and horizontal strain at the center were recorded at each load increment. Failure pattern of each wall panel is also studied to notice its structural behavior. The results of this experimental study showed an increase of 45% and 60% in load carrying capacity under axial compression and lateral bending, respectively by the use of strengthening technique employed in this study.","PeriodicalId":44808,"journal":{"name":"Journal of Applied Engineering Sciences","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47988310","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 In recent years and within the framework of its project “Algiers the metropolis”, Algiers has classified its transport network among its first concerns in order to compete with the other Mediterranean metropolises. However, the complexity of its territory, which is of a particular geological and geomorphological nature, represents a constraint for the proper distribution and management of its transport network. The complexity of its territory and of its transport network, leads us towards the systemic approach for the search of an adequacy between these two complex urban realities in order to find an effective and efficient tool of management and urban planning. The development of a set of indicators of sustainable mobility, as a result of this work, allowed us to find through an epistemological study of the literature on the two complex concepts to select and develop a list of Input and Output Indicators that are related to both territory and transport. Indeed, this list of sustainable mobility indicators will allow, on the one hand, in urban planning, a better match of the transport network to the Algerian territory and, on the other hand, the study of the effectiveness and efficiency of the present and future transport network.
{"title":"Interaction Between the Transport Network and the Territory of Algiers (Complex System): In Search of Indicators","authors":"Nour El Houda Baba Slimane, Tahar Baouni","doi":"10.2478/jaes-2021-0011","DOIUrl":"https://doi.org/10.2478/jaes-2021-0011","url":null,"abstract":"Abstract In recent years and within the framework of its project “Algiers the metropolis”, Algiers has classified its transport network among its first concerns in order to compete with the other Mediterranean metropolises. However, the complexity of its territory, which is of a particular geological and geomorphological nature, represents a constraint for the proper distribution and management of its transport network. The complexity of its territory and of its transport network, leads us towards the systemic approach for the search of an adequacy between these two complex urban realities in order to find an effective and efficient tool of management and urban planning. The development of a set of indicators of sustainable mobility, as a result of this work, allowed us to find through an epistemological study of the literature on the two complex concepts to select and develop a list of Input and Output Indicators that are related to both territory and transport. Indeed, this list of sustainable mobility indicators will allow, on the one hand, in urban planning, a better match of the transport network to the Algerian territory and, on the other hand, the study of the effectiveness and efficiency of the present and future transport network.","PeriodicalId":44808,"journal":{"name":"Journal of Applied Engineering Sciences","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43513775","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}
H. Kemer, R. Bouras, M. Sonebi, N. Mesboua, A. Benmounah
Abstract In order to decrease the fitting deviation between rheometrical measurements and empirical parameters using slump test, this paper proposes a new analytical method to evaluate the high yield stress of materials (cement pastes).In doing so, an experimental study was performed for measuring the empirical characteristics by cylindrical mold with different water to binder ratios (w/b) by aiming to increase the yield stress. Parallelly, experimental observations showed clearly the unyielded zone at flow stoppage of high yield stress samples. Based on these results, an idea was formed to applied metallic element at inlet of mold in order to push the spreading of paste. The obtained results of the model proposed in this paper were compared with the yield stress evaluated from shear flow curves using AR2000-rheometer with plate-plate geometry at rate-controlled. In fact, this study demonstrates the applicability and novelty of the present model in the process of relating the empirical parameters to yield stress.
{"title":"Slump Test: A New Empirical Model for High Yield Stress Materials","authors":"H. Kemer, R. Bouras, M. Sonebi, N. Mesboua, A. Benmounah","doi":"10.2478/jaes-2021-0014","DOIUrl":"https://doi.org/10.2478/jaes-2021-0014","url":null,"abstract":"Abstract In order to decrease the fitting deviation between rheometrical measurements and empirical parameters using slump test, this paper proposes a new analytical method to evaluate the high yield stress of materials (cement pastes).In doing so, an experimental study was performed for measuring the empirical characteristics by cylindrical mold with different water to binder ratios (w/b) by aiming to increase the yield stress. Parallelly, experimental observations showed clearly the unyielded zone at flow stoppage of high yield stress samples. Based on these results, an idea was formed to applied metallic element at inlet of mold in order to push the spreading of paste. The obtained results of the model proposed in this paper were compared with the yield stress evaluated from shear flow curves using AR2000-rheometer with plate-plate geometry at rate-controlled. In fact, this study demonstrates the applicability and novelty of the present model in the process of relating the empirical parameters to yield stress.","PeriodicalId":44808,"journal":{"name":"Journal of Applied Engineering Sciences","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46714306","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}
Florentina-Cristina Merciu, C. Păunescu, G. Merciu, A. Cioacă
Abstract The characteristics of the industrial heritage (antiquity, architectural, cultural, technological value) determined its inscription in the category of historical monuments. In recent years, non-invasive digital technologies have been used in studies focused on documenting, digitizing, preserving elements of industrial heritage. Also, another objective of digitizing the industrial heritage is to facilitate its promotion as a cultural resource among the general public. The purpose of this study is to promote the railway station of Curtea de Argeş through non-invasive technology. The analyzed industrial monument represents a symbolic building of the neo-Romanian architectural style. The building is also associated with a remarkable historical value: the railway station was also used by the Romanian royal family. Based on the use of terrestrial photogrammetry (versatile GNSS RTK GS18 I sensor) and aerial (photogrammetric flight), the authors created the 3D model of the station, obtaining a high-resolution modeling. The results of this study reflect the usefulness of modern technology for documenting, 3D modeling and promoting an industrial monument inscribed on the list of national cultural heritage. The accuracy and optimal performance of the measurements made, using GNSS technology and aerial photogrammetry, allowed highlighting the remarkable architectural and volumetric characteristics of the railway station of Curtea de Argeş Municipality.
工业遗产的特点(古物价值、建筑价值、文化价值、技术价值)决定了其被列入历史古迹的范畴。近年来，非侵入性数字技术已被用于工业遗产元素的记录、数字化和保护研究。此外，数字化工业遗产的另一个目标是促进其作为文化资源在公众中推广。本研究的目的是通过非侵入性技术来推广Curtea de argeai火车站。经过分析的工业纪念碑代表了新罗马尼亚建筑风格的标志性建筑。这座建筑还具有非凡的历史价值:罗马尼亚皇室也曾使用过这座火车站。利用地面摄影测量技术(通用GNSS RTK GS18 I传感器)和空中摄影测量技术(摄影测量飞行)，建立了空间站的三维模型，获得了高分辨率的模型。这项研究的结果反映了现代技术在记录、3D建模和推广列入国家文化遗产名录的工业纪念碑方面的有用性。使用GNSS技术和航空摄影测量所进行的测量的准确性和最佳性能，突出了Curtea de argeuz市火车站的显著建筑和体积特征。
{"title":"Using 3D Modeling to Promote Railway Heritage. The Railway Station of Curtea De Argeş Municipality as Case Study","authors":"Florentina-Cristina Merciu, C. Păunescu, G. Merciu, A. Cioacă","doi":"10.2478/jaes-2021-0016","DOIUrl":"https://doi.org/10.2478/jaes-2021-0016","url":null,"abstract":"Abstract The characteristics of the industrial heritage (antiquity, architectural, cultural, technological value) determined its inscription in the category of historical monuments. In recent years, non-invasive digital technologies have been used in studies focused on documenting, digitizing, preserving elements of industrial heritage. Also, another objective of digitizing the industrial heritage is to facilitate its promotion as a cultural resource among the general public. The purpose of this study is to promote the railway station of Curtea de Argeş through non-invasive technology. The analyzed industrial monument represents a symbolic building of the neo-Romanian architectural style. The building is also associated with a remarkable historical value: the railway station was also used by the Romanian royal family. Based on the use of terrestrial photogrammetry (versatile GNSS RTK GS18 I sensor) and aerial (photogrammetric flight), the authors created the 3D model of the station, obtaining a high-resolution modeling. The results of this study reflect the usefulness of modern technology for documenting, 3D modeling and promoting an industrial monument inscribed on the list of national cultural heritage. The accuracy and optimal performance of the measurements made, using GNSS technology and aerial photogrammetry, allowed highlighting the remarkable architectural and volumetric characteristics of the railway station of Curtea de Argeş Municipality.","PeriodicalId":44808,"journal":{"name":"Journal of Applied Engineering Sciences","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46738086","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 performance evaluation of an implemented water distribution network is in tight relation with the choice of adequate measures for water loss reduction. Hence, the consequences of placing the water network in a wrong performance category are bad and will conduct to unreasonably costs or considerable water loss volumes. Therefore, the evaluation of the water network performance level based on both Non-Revenue Water (NRW) and Infrastructure Leakage Index (ILI) indicators is to be recommended. This paper deals with the performance evaluation of water distribution systems based on the calculated performance indicators NRW and ILI. For this purpose, collected data for a period of one year from 12 Romanian small water distribution systems and two simplified average pressure determination methods were used.
{"title":"Average Operating Pressure Effect on Water Supply Systems Performances. A Case Study for 12 Romanian Small Water Distribution Networks","authors":"E. Vitan, A. Hoțupan, A. Hadarean","doi":"10.2478/jaes-2021-0019","DOIUrl":"https://doi.org/10.2478/jaes-2021-0019","url":null,"abstract":"Abstract The performance evaluation of an implemented water distribution network is in tight relation with the choice of adequate measures for water loss reduction. Hence, the consequences of placing the water network in a wrong performance category are bad and will conduct to unreasonably costs or considerable water loss volumes. Therefore, the evaluation of the water network performance level based on both Non-Revenue Water (NRW) and Infrastructure Leakage Index (ILI) indicators is to be recommended. This paper deals with the performance evaluation of water distribution systems based on the calculated performance indicators NRW and ILI. For this purpose, collected data for a period of one year from 12 Romanian small water distribution systems and two simplified average pressure determination methods were used.","PeriodicalId":44808,"journal":{"name":"Journal of Applied Engineering Sciences","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49484927","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 present field study investigated hydraulic and sediment in tidal conditions. Measurements were made for two stations at neap tide and spring tide for 13-hour periods at no-dimensional depths of 0.2, 0.6 and 0.8 of the water level each time. In these measurements, the parameters of velocity, direction of flow, electrical conductivity, temperature and depth were measured directly, and to determine the amount of suspended sediments per hour, 3 samples of one litre from the mentioned depths were measured by the instantaneous vertical sampler and taken to a laboratory. An examination of the depth charts of the suspended sediments concentration for all stations, and in both the neap tide and the spring tide, showed that, in general the suspended sediments concentration increased with increasing depth. Moreover, the deep distribution of sediments concentration showed that the values obtained in the laboratory corresponded well with the values calculated from the Rouse equation, and as the depth increases, the sediments concentration usually increases.
{"title":"Hydro-Sedimentary Study of a Tidal River: Case Study of the Arvand River in Iran","authors":"M. Bakhtiari, A. Larki, A. Samer","doi":"10.2478/jaes-2021-0002","DOIUrl":"https://doi.org/10.2478/jaes-2021-0002","url":null,"abstract":"Abstract The present field study investigated hydraulic and sediment in tidal conditions. Measurements were made for two stations at neap tide and spring tide for 13-hour periods at no-dimensional depths of 0.2, 0.6 and 0.8 of the water level each time. In these measurements, the parameters of velocity, direction of flow, electrical conductivity, temperature and depth were measured directly, and to determine the amount of suspended sediments per hour, 3 samples of one litre from the mentioned depths were measured by the instantaneous vertical sampler and taken to a laboratory. An examination of the depth charts of the suspended sediments concentration for all stations, and in both the neap tide and the spring tide, showed that, in general the suspended sediments concentration increased with increasing depth. Moreover, the deep distribution of sediments concentration showed that the values obtained in the laboratory corresponded well with the values calculated from the Rouse equation, and as the depth increases, the sediments concentration usually increases.","PeriodicalId":44808,"journal":{"name":"Journal of Applied Engineering Sciences","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2021-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44249810","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 Located in the north-central part of Anatolia, Amasya has hosted many civilizations throughout history. The city existed as a major commercial and cultural center during the Byzantine, Seljuk, and Ottoman eras. Many monumental works were gifted by these civilizations to the city, including the Bayezid II Mosque, which was constructed during the Ottoman Empire. In this study, the Bayezid II Mosque was assessed under static and dynamic loads. Results from the static analyses revealed the sections where stress and deformations occurred under static loads. Iron braces were used in these parts to reduce these impacts. Results from the dynamic analyses indicated that the sections of the structure where stresses and deformations have large values are the domes, the minarets, narthex, and the bottom and top points of the columns in the main load-bearing unit. The data derived from this study can serve to guide future restoration efforts.
{"title":"An Assessment of the Performance of the Amasya Bayezid II Mosque Under Static and Dynamic Loads","authors":"B. Seker, Gizem Büyükgüner","doi":"10.2478/jaes-2021-0008","DOIUrl":"https://doi.org/10.2478/jaes-2021-0008","url":null,"abstract":"Abstract Located in the north-central part of Anatolia, Amasya has hosted many civilizations throughout history. The city existed as a major commercial and cultural center during the Byzantine, Seljuk, and Ottoman eras. Many monumental works were gifted by these civilizations to the city, including the Bayezid II Mosque, which was constructed during the Ottoman Empire. In this study, the Bayezid II Mosque was assessed under static and dynamic loads. Results from the static analyses revealed the sections where stress and deformations occurred under static loads. Iron braces were used in these parts to reduce these impacts. Results from the dynamic analyses indicated that the sections of the structure where stresses and deformations have large values are the domes, the minarets, narthex, and the bottom and top points of the columns in the main load-bearing unit. The data derived from this study can serve to guide future restoration efforts.","PeriodicalId":44808,"journal":{"name":"Journal of Applied Engineering Sciences","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2021-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43631699","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}
H. Torabi, M. Najarchi, H. Mazaheri, R. Jafarinia, M. Izadikhah
Abstract One of the direct economic consequences of dam failure (DF) is that water supply for irrigation is affected and incomes of the agriculture sector (AS) are reduced. The main purpose of this study is to apply a linear programming model (LPM), which, the objective function of the model was set to maximize the income function of the region AS with accessible water sources and function of crops production before and after the DF by using dummy variable (DV) regression models to optimize water supply for irrigation. The results obtained indicate that the consumption of surface water(SW) and groundwaters (GW), before the DF has not been optimized, as there are 15.5 % source loss in SW and 14.5 % in GW. After the DF, the allocation of SW in the best possible situation of access to SW sources is independent of the model input. It has a fixed value equivalent to 86 million cubic meters (MCM), which indicates a 116% decrease in comparison with the optimized value. Total accessible water sources are decreased by 36 % and using GW is 15 % more than an average long period time. A based on the finding from this research and its comparison with previous studies, this model is appropriate for water supply programming after DF and for dry weather Conditions.
{"title":"Optimization in Water Resources At Dry Weather Conditions Before and After the Dam Failure By Using Dummy Variable Regression Approach","authors":"H. Torabi, M. Najarchi, H. Mazaheri, R. Jafarinia, M. Izadikhah","doi":"10.2478/jaes-2021-0009","DOIUrl":"https://doi.org/10.2478/jaes-2021-0009","url":null,"abstract":"Abstract One of the direct economic consequences of dam failure (DF) is that water supply for irrigation is affected and incomes of the agriculture sector (AS) are reduced. The main purpose of this study is to apply a linear programming model (LPM), which, the objective function of the model was set to maximize the income function of the region AS with accessible water sources and function of crops production before and after the DF by using dummy variable (DV) regression models to optimize water supply for irrigation. The results obtained indicate that the consumption of surface water(SW) and groundwaters (GW), before the DF has not been optimized, as there are 15.5 % source loss in SW and 14.5 % in GW. After the DF, the allocation of SW in the best possible situation of access to SW sources is independent of the model input. It has a fixed value equivalent to 86 million cubic meters (MCM), which indicates a 116% decrease in comparison with the optimized value. Total accessible water sources are decreased by 36 % and using GW is 15 % more than an average long period time. A based on the finding from this research and its comparison with previous studies, this model is appropriate for water supply programming after DF and for dry weather Conditions.","PeriodicalId":44808,"journal":{"name":"Journal of Applied Engineering Sciences","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2021-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45115597","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：