European Journal of Engineering Science and Technology最新文献_第3页

Monitoring Heavy Metal Pollution at Al-Buraihi Sewage Station in Taiz, Yemen using Napier Grass (Pennisetum Purpureum Schumach) as a Bioindicator 利用纳皮草(Pennisetum Purpureum Schumach)作为生物指标监测也门塔伊兹Al-Buraihi污水站的重金属污染

European Journal of Engineering Science and Technology Pub Date : 2021-12-20 DOI: 10.33422/ejest.v4i2.433

Raya Q.A. Al-Ansi, Abdelhafeez M.A. Mohammed, Mahmoud M. Ali, Wadie Ahmed MokbelGhalib, Sajan Chimmikuttanda Ponnappa

{"title":"Monitoring Heavy Metal Pollution at Al-Buraihi Sewage Station in Taiz, Yemen using Napier Grass (Pennisetum Purpureum Schumach) as a Bioindicator","authors":"Raya Q.A. Al-Ansi, Abdelhafeez M.A. Mohammed, Mahmoud M. Ali, Wadie Ahmed MokbelGhalib, Sajan Chimmikuttanda Ponnappa","doi":"10.33422/ejest.v4i2.433","DOIUrl":"https://doi.org/10.33422/ejest.v4i2.433","url":null,"abstract":"Soil pollution or soil contamination is an important environmental concern that causes health for both flora and fauna worldwide. The majority of pollutants have anthropogenic origins. However, some contaminants can occur naturally in soils as components of minerals and can be toxic at high concentrations. The biological materials like microorganisms, plants and animals have been studied to be used in biomonitoring of pollution. Plants are important bioindicators for heavy metals environmental pollution. Napier grass (Pennisetum purpureum Schumach), an animal fodder in Yemen, has been used in this study as a bioindicator for monitoring soil pollution around Al-Buraihi sewage station, Taiz, Yemen, using inductively coupled plasma-optical emission spectrometry (ICP-OES) technique. The concentrations of Cr and Pb were acceptable in all samples according to FAO and WHO, while those of As, Cd, Co, Cu, Fe, Mo, Ni, Se, and Zn were exceeding the limits of WHO in all plant species samples and accordingly recommended not to be used as animal fodder.","PeriodicalId":143710,"journal":{"name":"European Journal of Engineering Science and Technology","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114073449","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

Soil Loss Estimation within the Nun River Basin using Revised Universal Soil Loss Equation (RUSLE) integrated in Geographic Information Systems (GIS) 基于地理信息系统(GIS)的修正通用土壤流失方程(RUSLE)估算嫩河流域土壤流失量

European Journal of Engineering Science and Technology Pub Date : 2021-12-20 DOI: 10.33422/ejest.v4i4.514

J. Ehiorobo, R. I. Ilaboya, N. Onwo

{"title":"Soil Loss Estimation within the Nun River Basin using Revised Universal Soil Loss Equation (RUSLE) integrated in Geographic Information Systems (GIS)","authors":"J. Ehiorobo, R. I. Ilaboya, N. Onwo","doi":"10.33422/ejest.v4i4.514","DOIUrl":"https://doi.org/10.33422/ejest.v4i4.514","url":null,"abstract":"River bank erosion can cause undesired river bank expansion, distortion of the river course thereby slowing the river velocity and hindering the water carrying capacity of the river. Slow velocity of the river course can result in fast sediment accretion and accumulation at the bottom of the river. If these trends are not checked, the river may wind down and at best begin to become a delta at its middle course. The focus of this study is to apply GIS and analytical RUSLE equation to estimate soil loss within the Nun Basin. \u0000Core sediment samples were collected from relatively undisturbed areas (nine different stations) using Uwitec Triple sediment cutter. The sediment samples were processed in the lab for sediment particle size analysis (PSA) and Pb-210 atmospheric deposition with age using alpha spectrophotometer. Spatial rainfall data of the study location were employed to generate the rainfall erosivity map in order to determine the erosivity factor (R). Particle size distribution analysis was validated using Scanning Electron Micrograph (SEM) and integrated with Geographic Information Systems (GIS) was employed to create the soil erodibility map which was subsequently used to determine the erodibility factor (K). The cover management factor (P) was determined using the land use land cover map and the resulting data were then employed to model the river bank erosion around the study area. \u0000Result of the study revealed that the maximum annual average soil loss rate was estimated to be 0.66 tons/ha. /year around the Nun River based on GIS application using the Revised Universal Soil Loss Equation (RUSLE).","PeriodicalId":143710,"journal":{"name":"European Journal of Engineering Science and Technology","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114608098","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

Effect of Molasses on the Strength and Workability of Concrete with Cement Partially Replaced by Saw Dust Ash (SDA) 糖蜜对锯灰部分替代水泥混凝土强度和和易性的影响

European Journal of Engineering Science and Technology Pub Date : 2021-02-21 DOI: 10.33422/ejest.v4i4.691

Nandugwa Harriet, Mubiru Joel, Izimba George, Byamukama Jonas

引用次数: 0

Influence of Ni (II) oxime complex coupled with the combination of diverse sized ZnO nanoparticles on Photovoltaic Performance Ni (II)肟配合物与不同尺寸ZnO纳米颗粒的结合对光伏性能的影响

European Journal of Engineering Science and Technology Pub Date : 2020-12-30 DOI: 10.33422/EJEST.V3I2.349

Prashanth Kumar P.N., S. Ponnappa, Ravi Hethegowdanahally Rajegowda, A. Naik, M. Akple

{"title":"Influence of Ni (II) oxime complex coupled with the combination of diverse sized ZnO nanoparticles on Photovoltaic Performance","authors":"Prashanth Kumar P.N., S. Ponnappa, Ravi Hethegowdanahally Rajegowda, A. Naik, M. Akple","doi":"10.33422/EJEST.V3I2.349","DOIUrl":"https://doi.org/10.33422/EJEST.V3I2.349","url":null,"abstract":"The one side selective synthesis of quinoline carboxylic acid oxime complex was carried out successfully. The as-prepared quinoline carboxylic acid oxime complex was complexed with nickel (II) salts to form nickel (II) oxime complex. These complexes were further adsorbed onto ZnO films containing ZnO nanoparticles of various sizes. ZnO films containing a diverse proportion of ZnO nanoparticles were investigated to enhance the photovoltaic efficiency of the dye-sensitized solar cell. The as-synthesized complex was characterized by scanning electron microscopy (SEM), Ultra violet visible spectroscopy (UV-vis), Fourier Transform Infrared Spectroscopy (FT-IR) spectroscopy, 1Hydrogen Nuclear magnetic resonance spectroscopy (1HNMR), Liquid chromatography coupled with mass spectrometry (LC-MR), Brunauer–Emmett–Teller (BET), and Attenuated total reflection Infra-red spectroscopy (ATR-IR). The combination of large and small ZnO nanoparticles has significantly improves the photovoltaic efficiency. The optimum mixing ratio for the best performance (0.127%) of a dye-sensitized solar cell is achieved by mixing the small: large ZnO particles in a ratio 60:40. The increased efficiency is due to the harvesting of light caused by scattering effect from larger sized ZnO particles. The ZnO layer consisting of smaller particles which are very next to the ZnO bigger particles makes a good electronic contact between film electrode and the Indium-doped tin oxide glass substrate resulting in the increases in the dye molecules adsorption. The over-layered, large-sized ZnO particles enhance the light-harvesting by light scattering effect. Compared to the other mixtures of ZnO films, there is a decrease in the photovoltaic performance of the solar cell when ZnO particles (small and large in a ratio 1:1) were adsorbed onto the Ni (II) oxime complex, which are caused due to the decrease in the surface area and dye aggregation.","PeriodicalId":143710,"journal":{"name":"European Journal of Engineering Science and Technology","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116620800","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

Design and Experimental Verification of a Single-Phase Asymmetric Hybrid Multi-level Inverter 一种单相非对称混合多级逆变器的设计与实验验证

European Journal of Engineering Science and Technology Pub Date : 2020-12-30 DOI: 10.33422/EJEST.V3I2.344

A. Vural, A. O. Arslan, M. Deniz

{"title":"Design and Experimental Verification of a Single-Phase Asymmetric Hybrid Multi-level Inverter","authors":"A. Vural, A. O. Arslan, M. Deniz","doi":"10.33422/EJEST.V3I2.344","DOIUrl":"https://doi.org/10.33422/EJEST.V3I2.344","url":null,"abstract":"In recent years, multi-level inverters have emerged as a feasible power conversion solution for medium and high power applications due to better harmonic performance and ability to operate at high voltage/power when compared to traditional two-level inverters. Since the output level of the multi-level inverters depends on the number of the switching elements, as more levels are required, more switching elements are used. This situation makes the circuit and the control design complex and the losses to upsurge. To overcome these limitations and produce low harmonic content at the output, reduced switch count topologies are popular. In this study, a single-phase asymmetric hybrid multi-level inverter is proposed by combining diode clamped and cascaded H-bridge topologies. The inputs of the proposed inverter are selected as two unequal DC voltage sources. In this regard, fewer switching elements are used to obtain the same number of voltage levels at the output when compared to traditional multi-level inverters. The efficiency and the harmonic performance of the proposed topology is both verified by simulation and experimental studies. The gating signals of the semiconductor switches are produced by phase disposition pulse width modulation with carriers’ frequency of 4 kHz. It is shown by the experiments that a maximum efficiency of 94 % and a total harmonic distortion of 29 % are attained in the case studies.","PeriodicalId":143710,"journal":{"name":"European Journal of Engineering Science and Technology","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131449483","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: 2

Influence of Administration Route and Dose on Biodistribution Profile and Effects of PEG-PLA Nanoparticles in Mice 给药途径和剂量对聚乙二醇-聚乳酸纳米颗粒在小鼠体内生物分布、分布及作用的影响

European Journal of Engineering Science and Technology Pub Date : 2020-12-30 DOI: 10.33422/EJEST.V3I2.348

S. Aula, Samyuktha Lakkireddy, A. Kapley, R. Sharma, S. Uppin, K. Jamil

{"title":"Influence of Administration Route and Dose on Biodistribution Profile and Effects of PEG-PLA Nanoparticles in Mice","authors":"S. Aula, Samyuktha Lakkireddy, A. Kapley, R. Sharma, S. Uppin, K. Jamil","doi":"10.33422/EJEST.V3I2.348","DOIUrl":"https://doi.org/10.33422/EJEST.V3I2.348","url":null,"abstract":"Polyethylene glycol-polylactic acid nanoparticles (PEG-PLA NPs) represent a new generation of parenteral therapeutics systems. Following administration, these NPs possess the potential to interact with biological machinery. Therefore, it is essential to get a systematic understanding of the biological fate of these NPs to evaluate their safety. In the present study, two doses (20 and 40 mg/kg) of technetium-99m labeled PEG-PLA NPs were administered intravenous (i.v.) and oral into mice and the distribution was assessed at 1, 2, 4 and 24 h post administration. Biodistribution and blood kinetic profiles revealed the extended systemic circulation of the NPs. Dose-dependent presence of NPs (p<0.05) was detected in the blood, liver, lung, spleen, and kidney of i.v. injected mice, and also in the blood, lung, spleen, stomach, and intestine of oral administered mice. The consequences of NP interaction with the biological components were studied by measurement of hematology, oxidative stress, genotoxic and histological parameters. Significantly increased levels of oxidative stress markers such as glutathione were observed in the liver, and spleen of i.v. injected mice and liver, stomach, and intestine of orally treated mice. Decreased lipid peroxidation levels (p<0.05) were observed in the liver of orally treated mice versus untreated mice. Even though PEG-PLA NPs have been shown to induce oxidative DNA damage, interestingly no histological lesions were observed in selected organs except lung of i.v. treated mice, which showed moderate vascular congestion. Such insights on in vivo distribution and understanding of nano-bio interactions at molecular and genetic levels are considered fundamental for the designing of safer nanoparticles for biomedical applications.","PeriodicalId":143710,"journal":{"name":"European Journal of Engineering Science and Technology","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127896115","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

Applying Artificial Intelligence Techniques to Improve Clinical Diagnosis of Alzheimer’s Disease 应用人工智能技术提高阿尔茨海默病的临床诊断

European Journal of Engineering Science and Technology Pub Date : 2020-03-19 DOI: 10.20944/preprints202003.0297.v1

Ahmed Abdullah Farid, G. Selim, H. Khater

{"title":"Applying Artificial Intelligence Techniques to Improve Clinical Diagnosis of Alzheimer’s Disease","authors":"Ahmed Abdullah Farid, G. Selim, H. Khater","doi":"10.20944/preprints202003.0297.v1","DOIUrl":"https://doi.org/10.20944/preprints202003.0297.v1","url":null,"abstract":"Alzheimer's disease (AD) is a significant regular type of dementia that causes damage in brain cells. Early detection of AD acting as an essential role in global health care due to misdiagnosis and sharing many clinical sets with other types of dementia, and costly monitoring the progression of the disease over time by magnetic reasoning imaging (MRI) with consideration of human error in manual reading. Our proposed model in the first stage, apply the medical dataset to a composite hybrid feature selection (CHFS) to extract new features for select the best features to improve the performance of the classification process due to eliminating obscures. In the second stage, we applied a dataset to a stacked hybrid classification system to combine Jrip and random forest classifiers with six model evaluations as meta-classifier individually to improve the prediction of clinical diagnosis. All experiments conducted on a laptop with an Intel Core i7- 8750H CPU at 2.2 GHz and 16 G of ram running on windows 10 (64 bits). The dataset evaluated using an explorer set of WEKA data mining software for the analysis purpose. The experimental show that the proposed model of (CHFS) feature extraction performs better than proncipal component analysis (PCA), and lead to effectively reduced the false-negative rate with a relatively high overall accuracy with support vector machine (SVM) as meta-classifier of 96.50% compared to 68.83% which is considerably better than the previous state-of-the-art result. The receiver operating characteristic (ROC) curve was equal to 95.5%. Also, the experiment on MRI images Kaggle dataset of CNN classification process with 80.21% accuracy result. The results of the proposed model show an accurate classify Alzheimer's clinical samples against MRI neuroimaging for diagnoses AD at a low cost.","PeriodicalId":143710,"journal":{"name":"European Journal of Engineering Science and Technology","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127615987","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: 15

Discovering Customer Paths from Location Data with Process Mining 利用流程挖掘从位置数据中发现客户路径

European Journal of Engineering Science and Technology Pub Date : 2020-01-15 DOI: 10.33422/ejte.2020.01.20

Onur Doğan

引用次数: 5

Prevention of Power Theft and Reduction of Excessive Power Usage Using Fuzzy Logic for Residential Consumers 利用模糊逻辑预防盗窃和减少住宅用户过度用电

European Journal of Engineering Science and Technology Pub Date : 2019-10-21 DOI: 10.33422/ejest.2019.08.20

Manal Shlibek

{"title":"Prevention of Power Theft and Reduction of Excessive Power Usage Using Fuzzy Logic for Residential Consumers","authors":"Manal Shlibek","doi":"10.33422/ejest.2019.08.20","DOIUrl":"https://doi.org/10.33422/ejest.2019.08.20","url":null,"abstract":"This paper shows a control method to prevent users from stealing power and also to reduce excessive power usage with assist of fuzzy inference system. Power theft can be detected by comparison between substation energy meter reading and the total load supplied by the electricity poles. Excessive power usage can also be detected by comparison between the power delivered from the substation with the power consumed by the customer. The Arduino board, namely Slave board is connected to the energy meter of each home. Another Arduino board, namely Master board is connected to the energy meter of the substation. The Master board is used to continuously monitor the load consumption that calculated by Slave board. Any difference noticed in collected data means either power theft has occurred or excessive power usage has occurred which is legal use but may cause troubles for the power grid, such troubles may put the electricity network in the collapse condition. This difference of readings is fed as input to the Fuzzy logic control system and the corresponding change in output load is provided by the controller will be fed as input to Slave board to cutoff the electricity for preventing stealing the power and also to reduce excessive power usage. Both of Master and Slave are Arduino boards with same structure of components with different generated codes. In this paper, fuzzy logic acts as a relay in electricity theft condition and as a regulator in excessive usage condition. The simulation of both processes, including cutting off the electricity in the theft condition and regulating the amount of electricity in the extreme consumption condition, have been done by Toolbox/MATLAB using fuzzy logic controller named Mamdani. For more accurate results, simulation also has been done using another fuzzy logic controller named Sugeno Controller.","PeriodicalId":143710,"journal":{"name":"European Journal of Engineering Science and Technology","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125202282","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 Automatic Detection of Power Theft and Excessive Power Usage in Libyan Electricity Network 利比亚电网窃电和过度用电的自动检测

European Journal of Engineering Science and Technology Pub Date : 2019-09-30 DOI: 10.33422/ejest.2019.07.10

Manal Shlibek

{"title":"The Automatic Detection of Power Theft and Excessive Power Usage in Libyan Electricity Network","authors":"Manal Shlibek","doi":"10.33422/ejest.2019.07.10","DOIUrl":"https://doi.org/10.33422/ejest.2019.07.10","url":null,"abstract":"The General Electric Company Of Libya (GECOL) suffers from power theft phenomenon which is considered as one of the main causes that leads to the load shading problems. This work proposes a system that provides a solution to this problem. Power theft occurs mainly by premises that require a high power consumption like houses, factories and farms. The system automatically detects the illegal users by placing a current sensor on an energy meter that supplies a certain area with electricity. The sensor will assist in the distinction of the illegal consumption. It will be connected to the Arduino to compare the sensed value that represents the actual consumption with the specified consumption value set by GECOL which is stored in the Microcontroller memory. The Arduino is interfaced between the energy meter, current sensor, voltage sensor, and relay. The proposed model is simulated by Proteus as the 1 KW distribution line with three loads. Power system output checks continuously the status of the user connection and displays which line got power theft. Once power theft detected the system is cutting the user connection using relay as a punishment. Then the system is enabling the user connection again. The system can also sends a notification message to inform GECOL that there is an additional unexpected consumption detected in that particular energy meter. As a result, GECOL can ensure weather this detected power is authorized by the company.","PeriodicalId":143710,"journal":{"name":"European Journal of Engineering Science and Technology","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114272536","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: 1