Journal of Engineering and Sustainable Development最新文献_第5页

ASPHALT BINDERS EMPLOY VARIOUS ORGANIC ADDITIVES: PHYSICAL AND RHEOLOGICAL QUALITIE 沥青粘合剂采用各种有机添加剂：物理和流变性能

Journal of Engineering and Sustainable Development Pub Date : 2024-01-01 DOI: 10.31272/jeasd.28.1.7

Omar Adel Ismael, Siham Idan Salih

{"title":"ASPHALT BINDERS EMPLOY VARIOUS ORGANIC ADDITIVES: PHYSICAL AND RHEOLOGICAL QUALITIE","authors":"Omar Adel Ismael, Siham Idan Salih","doi":"10.31272/jeasd.28.1.7","DOIUrl":"https://doi.org/10.31272/jeasd.28.1.7","url":null,"abstract":"Several studies aim to reduce surface temperatures and improve the performance of hot mix asphalt. These studies have occurred to reduce the global warming phenomena and economic concerns. We're researching how organic materials affect the viscosity of modified asphalt. Asphaltan A, Asphaltan B, Asphaltan C, and T-grade are organic additives. temperatures with the asphalt binder were employed in the current study. These organic additives were used to improve the characteristics of hot-mix asphalt. In addition, it increases the durability, and lifespan of pavement and reduces mixing and compaction temperatures. A penetration grade bitumen of 40/50 was used in this study. Then, pure bitumen was added to the organic additives to modify binders containing varying concentrations of each additive. Physical properties were performance at different levels of additives. In the research, conventional bitumen/asphalt should be adjusted due to climate conditions, strong traffic loads, and growing axial loads. As a result, asphalt mixtures comprehending bitumen with a high penetration index are less prone to low-temperature cracking and irreversible deformation. Traditional asphalt studies found that bitumen samples with the softening point of warm mix asphalt additives were greater rate, and were less susceptible to temperature changes. The introduction of organic compounds increased the penetration and softening point of the asphalt substantially. This indicated that the stiffness and thermal expansion of the binder had gotten better.","PeriodicalId":33282,"journal":{"name":"Journal of Engineering and Sustainable Development","volume":"9 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139126396","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}

引用次数: 0

EXPERIMENTAL COMPARISON OF FLOW ENERGY LOSS IN TYPE-B AND -C TRAPEZOIDAL PIANO KEY WEIRS (PKWS) B 型和 C 型梯形琴键式围堰（PKWS）水流能量损失的实验比较

Journal of Engineering and Sustainable Development Pub Date : 2024-01-01 DOI: 10.31272/jeasd.28.1.4

Ali Qasim Rdhaiwi, Ali Khoshfetrat, Amirhossein Fathi

引用次数: 0

INSULATED GATE BIPOLAR TRANSISTOR TEMPERATURE CALCULATION USING SIMSCAPE/SIMULINK ENVIRONMENT WITH VARIOUS SWITCHING FREQUENCY 使用 simscape/simulink 环境计算各种开关频率下绝缘栅双极晶体管的温度

Journal of Engineering and Sustainable Development Pub Date : 2024-01-01 DOI: 10.31272/jeasd.28.1.8

Ahmed Shihab Ahmed, Riyadh Ghanim Omar

{"title":"INSULATED GATE BIPOLAR TRANSISTOR TEMPERATURE CALCULATION USING SIMSCAPE/SIMULINK ENVIRONMENT WITH VARIOUS SWITCHING FREQUENCY","authors":"Ahmed Shihab Ahmed, Riyadh Ghanim Omar","doi":"10.31272/jeasd.28.1.8","DOIUrl":"https://doi.org/10.31272/jeasd.28.1.8","url":null,"abstract":"Because of developments in high-power converters, it has become crucial to investigate how effective inverter performance is. consequently, via being aware of the temperature value of the junction for the inverter switch. The rise in the switching frequency of the inverter, as well as the kind of control technique used, all have an impact on the value of junction temperature. The traditional methods for determining the junction temperature are imprecise and challenging to use. Therefore, a novel approach was used in this study to compute the junction temperature in a simple manner utilizing the MATLAB/Simulation SIMSCAPE environment. The junction temperature of the inverter's switches is easily estimated, where the heat conveyed over the layers of the IGBT can be indicated by using the simple thermal model of Foster. Because the semiconductors within the SIMSCAPE environment exhibit boosted design together with a direct thermal port. As a result, the estimation of the junction temperature is more precise and direct. This feature is only openable in the newest categories of the MATLAB program (2019-2023) This paper presents the losses formed in an Insulated Gate Bipolar Transistors, and thermal behavior analysis to represent IGBT's layers. The simulation included the influence of various operating switching frequencies on the temperature value of the junction. The results show that the temperature value of the junction increases as the switching frequency value increases and the Space Vector pulse width modulation technique has a value of junction temperature lower than the Sinusoidal pulse width modulation technique at the same switching frequency.","PeriodicalId":33282,"journal":{"name":"Journal of Engineering and Sustainable Development","volume":"134 50","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139128340","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}

引用次数: 0

THE EFFECT OF MOISTURE CONTENT ON ELECTRICAL PROPERTIES OF SELECTED SOFTWOODS; CEDAR, JUNIPER, AND PINE 含水率对部分软木（雪松、杜松和松木）电气特性的影响

Journal of Engineering and Sustainable Development Pub Date : 2024-01-01 DOI: 10.31272/jeasd.28.1.3

Sinan Saeed Jasim Alsaadi, Atalya Kocakusak, S. Helhel

{"title":"THE EFFECT OF MOISTURE CONTENT ON ELECTRICAL PROPERTIES OF SELECTED SOFTWOODS; CEDAR, JUNIPER, AND PINE","authors":"Sinan Saeed Jasim Alsaadi, Atalya Kocakusak, S. Helhel","doi":"10.31272/jeasd.28.1.3","DOIUrl":"https://doi.org/10.31272/jeasd.28.1.3","url":null,"abstract":"Natural woods as a raw material have been taking a considerable interest topic by industries such as the forest industry, furniture manufacturing, and nowadays suitable electronics. One of the most essential steps of manufacturing for those industry purposes is RF heating/drying of raw wood material nowadays. However, knowing the electrical properties, such as the dielectric constant of wood-based material before processing is tremendously important. It is well-known that the moisture content and density levels of material directly affect the dielectric properties. Moisture and density conditions are different in each material because it’s related directly to the absorption and affection of material towards moisture sources. Therefore, in this study of wood material under varying conditions, proper empiric models have been generated to express this relationship. This study is based on three different softwood specimens widely used in the forest industry. The dielectric properties were determined in the frequency range of 2.17 GHz-6.0 GHz as a function of moisture content and density for wood species. Each measurement contains 500 raw data points; a vector network analyzer collected 49,500 S-parameter data. Each wood specimen consists of six samples; the average of data obtained from these samples was considered as a dielectric measure for the examined wood specimen. The proposed empiric models have RMSE better than 0.05 for the relation between loss tangent and density, while the proposed empiric models for dielectric permittivity have better than 0.90 with density relation, which is considered an acceptable ratio for model generation.","PeriodicalId":33282,"journal":{"name":"Journal of Engineering and Sustainable Development","volume":"24 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139129819","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}

引用次数: 0

EXPERIMENTAL INVESTIGATION OF SCOUR DOWNSTREAM OF A C-TYPE TRAPEZOIDAL PIANO KEY WEIR WITH STILLING BASIN 带有消力池的c型梯形钢琴键堰下游冲刷试验研究

Journal of Engineering and Sustainable Development Pub Date : 2023-11-01 DOI: 10.31272/jeasd.27.6.2

Ali Qasim Rdhaiwi, Ali Khoshfetrat, Amirhossein Fathi

引用次数: 0

OPTIMAL LONG-RANGE-WIDE-AREA-NETWORK PARAMETERS CONFIGURATION FOR INTERNET OF VEHICLES APPLICATIONS IN SUBURBAN ENVIRONMENTS 城郊环境下车联网应用的最佳远程广域网参数配置

Journal of Engineering and Sustainable Development Pub Date : 2023-11-01 DOI: 10.31272/jeasd.27.6.7

None Gregor Alexander Aramice, None Abbas H. Miry, Tariq M. Salman

{"title":"OPTIMAL LONG-RANGE-WIDE-AREA-NETWORK PARAMETERS CONFIGURATION FOR INTERNET OF VEHICLES APPLICATIONS IN SUBURBAN ENVIRONMENTS","authors":"None Gregor Alexander Aramice, None Abbas H. Miry, Tariq M. Salman","doi":"10.31272/jeasd.27.6.7","DOIUrl":"https://doi.org/10.31272/jeasd.27.6.7","url":null,"abstract":"In this paper, the effect of Long-Range wireless technology parameters on signal propagation in suburban environments is investigated. Wireless propagation modeling provides information about the wireless channel and its impact on communication links. Received signal strength and coverage area are evaluated to determine signal path loss. The operating frequency of 433 MHz Long Range Wireless Area Network is utilized with different spreading factors, bandwidths, and code rates. Empirical propagation models are utilized to predict a mathematical model based on measured empirical signal strength in a suburban site in Baghdad City. The measured signal strength and signal-to-noise ratio values were obtained through drive tests in an Internet of Vehicles environment to design a network that could accurately report vehicle locations. The LoRa parameters affected the calculated path loss exponent, leading to various predictions in the network design. The path loss exponent exhibited instability due to the presence of obstacles and different long-range parameter settings. Path loss exponent deviation fluctuates due to bandwidth and spreading factor variations. Path loss exponent reduced at higher coding rates for more protection purposes. Packet ratio reception improved as the coding rate increased. To minimize the impact of the path loss on network design, an optimization policy was employed to determine the best parameters that resulted in the lowest path loss. The optimal path loss obtained at LoRa configuration parameters settings with spreading factor (7), bandwidth (500 kHz), and code rate (4/5).","PeriodicalId":33282,"journal":{"name":"Journal of Engineering and Sustainable Development","volume":"114 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135320785","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}

引用次数: 0

THE ABILITY OF CALCIUM ION IN THE TREATMENT OF DAIRY WASTEWATER 钙离子在乳品废水处理中的作用

Journal of Engineering and Sustainable Development Pub Date : 2023-11-01 DOI: 10.31272/jeasd.27.6.9

Ali Abdullah Hasan, Ilham Al-Obaidi, Ali F. Hassoon

引用次数: 0

A LABORATORY MODEL FOR THE TWO-PHASE FLOW CONTAMINANT TRANSIENT IN MULTI-POROUS MEDIA 多孔介质中两相流污染物瞬态的实验室模型

Journal of Engineering and Sustainable Development Pub Date : 2023-11-01 DOI: 10.31272/jeasd.27.6.6

Zahraa Akram Thijeel, Sadiq Salman Muhsun

{"title":"A LABORATORY MODEL FOR THE TWO-PHASE FLOW CONTAMINANT TRANSIENT IN MULTI-POROUS MEDIA","authors":"Zahraa Akram Thijeel, Sadiq Salman Muhsun","doi":"10.31272/jeasd.27.6.6","DOIUrl":"https://doi.org/10.31272/jeasd.27.6.6","url":null,"abstract":"The environmental behavior of rock and oil pollutants in soil has long been a focus of environmental protection research. In this research, a laboratory model was established to study the oil pollutant transfer process in two stages. Two samples from porous media of sandy soil and agricultural soil (organic) were used with oil as a pollutant. The oil is pumped through a system consisting of two pipes with a length of 4 m and a diameter of 0.07 m. Each pipe is assigned to a specific type of soil. The results showed that the organic soil needs a long time for the pollutants to travel over greater distances, while the sandy soil showed its ability to absorb and drain the pollutants and get rid of them faster. However, it was also found that both soils contain a small percentage of the pollutant after the water washing process, which lasts for more than (5 hours). The remaining oil percentage is estimated at about (0.1 ml), which is a very small percentage, and it is possible to get rid of it by increasing the washing time. It was found that the physical properties of the soil such as permeability and porosity have a significant effect on slowing down the speed of the pollutant and its transmission through the porous medium.","PeriodicalId":33282,"journal":{"name":"Journal of Engineering and Sustainable Development","volume":"171 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135321248","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}

引用次数: 0

MECHANICAL PROPERTIES OF SUSTAINABLE FIBER-REINFORCED LIGHTWEIGHT AGGREGATE CONCRET 可持续纤维增强轻骨料混凝土的力学性能

Journal of Engineering and Sustainable Development Pub Date : 2023-11-01 DOI: 10.31272/jeasd.27.6.11

Wael Jasim Mohammed, Nagham Tariq, Zainab M. Hussein

{"title":"MECHANICAL PROPERTIES OF SUSTAINABLE FIBER-REINFORCED LIGHTWEIGHT AGGREGATE CONCRET","authors":"Wael Jasim Mohammed, Nagham Tariq, Zainab M. Hussein","doi":"10.31272/jeasd.27.6.11","DOIUrl":"https://doi.org/10.31272/jeasd.27.6.11","url":null,"abstract":"With the rapid growth of high-rise buildings and large-scale structures, there is a need to preserve natural resources and reduce loads on buildings by using lightweight concrete to achieve better performance for structures. In the study, four groups were prepared; the first group included one mix containing natural aggregate, and the second mix replaced all the natural aggregates with lightweight pumice aggregates. These mixes are reinforced with carbon fiber with a 0.5% volume fraction. In the second group, a variable volume fraction of carbon fiber of (0.0 and 1%) of mixes. In the third group, the mixes have different lengths of carbon fiber (20mm, 30mm) and a volume fraction of carbon fibers 0.5%. Finally, the fourth group partially replaces sand as a variable with a percentage of lightweight fine aggregates (10% and 30%) reinforced with fibers. Adding carbon fibers to the concrete specimens by 0.5% and 1% improved splitting tensile strength and flexural strength compared to the specimens containing carbon fibers with a length of 5mm. Also, enhanced samples containing fibers by 0.5% and lengths of 20 mm or 30 mm, compared to the sample containing carbon fibers with a length of 5 mm. Also, the specimens containing lightweight fine aggregates as a replacement with a percentage of sand have a lower splitting tensile strength and flexural strength than the reference mix.","PeriodicalId":33282,"journal":{"name":"Journal of Engineering and Sustainable Development","volume":"191 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135321416","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}

引用次数: 0

RECONFIGURABLE GRAPHENE-BASED MULTI-INPUT-MULTI-OUTPUT ANTENNA FOR SIXTH GENERATION AND BIOMEDICAL APPLICATION 第六代可重构石墨烯多输入多输出天线及生物医学应用

Journal of Engineering and Sustainable Development Pub Date : 2023-11-01 DOI: 10.31272/jeasd.27.6.10

Reem Hikmat Abd, Hussein Ali Abdualnubi

引用次数: 0