Global Journal of Engineering and Technology Advances最新文献_第7页

Pyrolytic conversion of waste plastics using African apple seed-based activated carbon catalyst 基于非洲苹果籽的活性炭催化剂在废塑料热解转化中的应用

Global Journal of Engineering and Technology Advances Pub Date : 2023-09-30 DOI: 10.30574/gjeta.2023.16.3.0199

None Patrick Isicheli, None Akuma Oji, None Obumneme Okwonna, None Peter Odiboroghene Muwarure

{"title":"Pyrolytic conversion of waste plastics using African apple seed-based activated carbon catalyst","authors":"None Patrick Isicheli, None Akuma Oji, None Obumneme Okwonna, None Peter Odiboroghene Muwarure","doi":"10.30574/gjeta.2023.16.3.0199","DOIUrl":"https://doi.org/10.30574/gjeta.2023.16.3.0199","url":null,"abstract":"This research aimed to conduct a pyrolytic conversion of waste plastics using an African seed-based activated carbon catalyst. The process description to produce activated carbon from African star apple includes removing and drying seed husks, grinding, and preparing activated carbon (AC). The plastic waste materials used for the catalytic pyrolysis process were waste Low-Density Polyethylene (LDPE) and High-Density Polyethylene (HDPE) plastic, which were sourced from Liberation Stadium Road, GRA Phase IV, Port Harcourt, Rivers State. The effects of activated carbon (AC) as a catalyst on fuel production and gasification efficiency were also evaluated. Proximate and ultimate analyses were conducted on the AC to determine its composition. The results showed that the AC had high fixed carbon content and low volatile matter and ash contents. The experiments also showed that the products' density, calorific value, cetane number, and kinematic viscosity were within the range of diesel fuel specifications. However, the water, flashpoint, acid number, ash, and nitrogen content were higher than diesel fuel. The addition of AC catalyst improved the properties of the pyrolyzed products by reducing the water content, acid number, and ash content.","PeriodicalId":402125,"journal":{"name":"Global Journal of Engineering and Technology Advances","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136343087","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

Literature review on the control of brushless doubly-fed induction machine 无刷双馈感应电机控制的文献综述

Global Journal of Engineering and Technology Advances Pub Date : 2023-09-30 DOI: 10.30574/gjeta.2023.16.3.0186

None Ulrich Ngnassi Nguelcheu, None Ngasop Ndjiya, None Eric Duckler Kenmoe Fankem, None Aslain Brisco Ngnassi Djami, None Golam Guidkaya, None Alix Tioffo Dountio

引用次数: 0

Implementation of public procurement standards in Nigeria: Challenges and prospects 尼日利亚公共采购标准的实施:挑战与前景

Global Journal of Engineering and Technology Advances Pub Date : 2023-09-30 DOI: 10.30574/gjeta.2023.16.3.0167

None Orseer Ama, None Tyungu Aki, None Michael Toryila Tiza

{"title":"Implementation of public procurement standards in Nigeria: Challenges and prospects","authors":"None Orseer Ama, None Tyungu Aki, None Michael Toryila Tiza","doi":"10.30574/gjeta.2023.16.3.0167","DOIUrl":"https://doi.org/10.30574/gjeta.2023.16.3.0167","url":null,"abstract":"This study delves into the challenges and prospects associated with implementing public procurement standards in Nigeria. Public procurement plays a crucial role in acquiring goods, services, and works essential for public service delivery and development. However, Nigeria faces multifaceted challenges including inadequate legal frameworks, corruption, capacity deficiencies, and weak monitoring and enforcement mechanisms. These challenges compromise transparency, efficiency, and accountability in the allocation of public resources. Despite these challenges, there are promising prospects for improvement. Legal reforms, harmonization of regulations, and technology adoption are key strategies. Strengthening transparency and accountability through e-procurement systems, whistleblower protection, and public participation is critical. Additionally, capacity building and professional development for procurement personnel, as well as collaboration with international partners, offer avenues for progress. Drawing lessons from successful cases such as Singapore and the United Kingdom, Nigeria can adapt international best practices to its context. By addressing challenges and embracing prospects, Nigeria can create a procurement landscape that ensures transparency, efficiency, and fairness, contributing to sustainable development and the well-being of its citizens. However, achieving this requires collective commitment, adoption of best practices, and a determination to enhance public procurement standards.","PeriodicalId":402125,"journal":{"name":"Global Journal of Engineering and Technology Advances","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136272377","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

A review of various techniques for vibration signal analysis to diagnose the faults of electric motors: Advantages and drawbacks 各种振动信号分析诊断电机故障的技术综述:优缺点

Global Journal of Engineering and Technology Advances Pub Date : 2023-09-30 DOI: 10.30574/gjeta.2023.16.3.0179

None Ammar A Al-Hamadani, None Ali R Ibrahim, None Mohammed K Al-Obaidi, None Aws M Abdullah, None Anas F Ahmed

引用次数: 0

Review of various feature extraction approaches for ERG signal analysis: Advantages and drawbacks ERG信号分析的各种特征提取方法综述:优缺点

Global Journal of Engineering and Technology Advances Pub Date : 2023-09-30 DOI: 10.30574/gjeta.2023.16.3.0178

None Aws M Abdullah, None Ali R Ibrahim, None Ammar A Al-Hamadani, None Mohammed K Al-Obaidi, None Anas F Ahmed

{"title":"Review of various feature extraction approaches for ERG signal analysis: Advantages and drawbacks","authors":"None Aws M Abdullah, None Ali R Ibrahim, None Ammar A Al-Hamadani, None Mohammed K Al-Obaidi, None Anas F Ahmed","doi":"10.30574/gjeta.2023.16.3.0178","DOIUrl":"https://doi.org/10.30574/gjeta.2023.16.3.0178","url":null,"abstract":"This article presents a comprehensive examination of various techniques used to extract features from Electroretinogram (ERG) signals for analysis purposes. ERG signals are crucial in the diagnosis and study of retinal diseases. The accurate extraction of informative features from ERG signals is vital for understanding retinal function and identifying abnormalities. This review specifically focuses on different methods employed for feature extraction in ERG signal analysis, highlighting their respective advantages and disadvantages. The article explores a range of established methods, namely time-domain, frequency-domain, time-frequency domain analysis, and machine learning delves into the difficulties and constraints linked to these strategies, such as signal noise, artifacts, and computational complexity. Its objective is to offer a thorough evaluation of the merits and drawbacks of diverse feature extraction techniques, with the aim of aiding researchers and clinicians in their selection of suitable methods for the analysis of ERG signals.","PeriodicalId":402125,"journal":{"name":"Global Journal of Engineering and Technology Advances","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136277165","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

Robust alarm design strategy for medical devices: Application to air-in-line detection and occlusion management 医疗设备的稳健报警设计策略:在空气在线检测和闭塞管理中的应用

Global Journal of Engineering and Technology Advances Pub Date : 2023-09-30 DOI: 10.30574/gjeta.2023.16.3.0181

Eric Chappel

引用次数: 0

Machine learning enabled system for intelligent classification of host-based intrusion severity 支持机器学习的基于主机的入侵严重程度智能分类系统

Global Journal of Engineering and Technology Advances Pub Date : 2023-09-30 DOI: 10.30574/gjeta.2023.16.3.0171

None Anthony Effiong Edet, None Godwin Okon Ansa

{"title":"Machine learning enabled system for intelligent classification of host-based intrusion severity","authors":"None Anthony Effiong Edet, None Godwin Okon Ansa","doi":"10.30574/gjeta.2023.16.3.0171","DOIUrl":"https://doi.org/10.30574/gjeta.2023.16.3.0171","url":null,"abstract":"Intrusion severity classification or the analysis of the impact of intrusion is a much needed solution to effectively manage intrusion events in an organization. A lot of intrusion scenarios have been carried out by systems administrators or the internal workers over the years in different organizations and the external hackers are berated for it. Many deliberate inversions have happened from the internal actors with top management board members only swinging into actions to manage the effect of it without digging into the inversion to apprehend the actors or the source of the intrusion. So, this work has been designed to assist IT firms to effectively carry out the analysis of the impact of intrusion, especially those from the internal workers. In this work, we proposed a Machine Learning Enabled System for Intelligent Classification of Host-based Intrusion Severity. The proposed model is aimed at detecting the severity of intrusion problems, carryout source analysis and give security recommendation for effective management of intrusion problems. The model is divided into three phases; the detection of intrusion severity, source analysis and security recommendation using counterfacatual reasoning.We built a system that aided us to gather user interaction over time, we captured these interaction in the activity log, our dataset was extracted from these activity log data.We used Bayesian Network to design the intrusion severity classification system, source analysis is carried out immediately, then counterfactual model is employed to give security recommendation. The accuracy of Bayesian Network in the intrusion severity classification model is 82%. An API was generated and deployed to allow scalability.","PeriodicalId":402125,"journal":{"name":"Global Journal of Engineering and Technology Advances","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136272198","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 pre-treatment on drying parameter of sweet potato (Ipomea batatas) slices using cabinet dryer 柜式干燥机预处理对甘薯片干燥参数的影响

Global Journal of Engineering and Technology Advances Pub Date : 2023-09-30 DOI: 10.30574/gjeta.2023.16.3.0190

None AbdulLateef Balogun, None Jelili Aremu Oyedokun, None Kamaldeen Taiwo Sule, None Barakat Bunmi Issa, None Nurot Damilola Falola

{"title":"Effect of pre-treatment on drying parameter of sweet potato (Ipomea batatas) slices using cabinet dryer","authors":"None AbdulLateef Balogun, None Jelili Aremu Oyedokun, None Kamaldeen Taiwo Sule, None Barakat Bunmi Issa, None Nurot Damilola Falola","doi":"10.30574/gjeta.2023.16.3.0190","DOIUrl":"https://doi.org/10.30574/gjeta.2023.16.3.0190","url":null,"abstract":"The study aims to examine the drying process of treated sweet potato slices to determine the effects of drying temperature, pre-treatment (blanching and salting), and slice thickness on drying rate and weight loss, an electrically powered cabinet dryer was used for the experiments this dryer allows for controlled drying at specific temperatures and airflow rates, the drying temperatures ranged from 70°C to 90°C and airflow rate of 2.5 m/s was used. The sweet potato slices were treated using blanching and salting with slices ranging from 3mm to 7mm. The study employed Response Surface Methodology (RSM) to analyze the results. The study found that the thickness of the sliced sweet potato had a linear effect on drying rate and weight loss. Additionally, the interaction between drying temperature and the selected pre-treatment (blanching and salting) was found to significantly influence drying rate and weight loss, when the significance level for the observed effects was set at p < 0.05. Conclusively the results of the investigation indicated that the cabinet dryer used in the study was capable of effectively handling the drying of roots and tuber crops, specifically sweet potato slices. This suggests that the drying process could potentially extend the shelf life of these agricultural materials.","PeriodicalId":402125,"journal":{"name":"Global Journal of Engineering and Technology Advances","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136277082","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

Advances in liquefied natural gas processes 液化天然气工艺的进展

Global Journal of Engineering and Technology Advances Pub Date : 2023-09-30 DOI: 10.30574/gjeta.2023.16.3.0184

None Ibim Abba Green, None Kelechi Uchenna Ugoji, None Umar Shamsu, None Igbere Billy Ndukam, None Titus Joseph

{"title":"Advances in liquefied natural gas processes","authors":"None Ibim Abba Green, None Kelechi Uchenna Ugoji, None Umar Shamsu, None Igbere Billy Ndukam, None Titus Joseph","doi":"10.30574/gjeta.2023.16.3.0184","DOIUrl":"https://doi.org/10.30574/gjeta.2023.16.3.0184","url":null,"abstract":"Over the past 30 years, a considerable world trade in LNG has developed. Today, LNG represents a significant component of the energy consumption of many countries and has been profitable to both the exporting host countries and their energy company partners. The attention of LNG producers have now been directed towards improved production. All latest plants have been sized around this number. Some of them have been designed by optimizing existing layout, other brand new and few required the optimization of centrifugal compressors and so the introduction of some novelty to maximize production given a certain driver. Improvements in the aerodynamic design have been necessary to maximize efficiency and increase operating range; advanced rotordynamic design to handle more capacity, new casings to increase design pressure and reduce the number are some of the innovations introduced to advance LNG operations. Novelties have not been limited to main refrigerant compressor but also to auxiliaries such as Boil Off Gas (BOG), CO2, End Flash. Eventually also new drivers have been qualified for LNG plant operations and other are under study for its high efficiency and possible future application. Extensive application of modular construction techniques will reduce the time and cost of construction in remote areas of the world. This article aims to explain, in layman terms, LNG basic knowledge, exploration, production and advancement. Throughout the article, references have been drawn from a wide range of resources and author’s personal industry experience. It is intended to use the article as a vehicle to share oil & gas industry knowledge with a wide range of audience.","PeriodicalId":402125,"journal":{"name":"Global Journal of Engineering and Technology Advances","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136277090","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

A review for filtering techniques of the Electrooculography (EOG) signals 眼电信号滤波技术综述

Global Journal of Engineering and Technology Advances Pub Date : 2023-09-30 DOI: 10.30574/gjeta.2023.16.3.0177

None Aws M Abdullah, None Ali R Ibrahim, None Ammar A Al-Hamadani, None Mohammed K Al-Obaidi, None Anas F Ahmed

引用次数: 0