Web 2.0 communication tools have great potential to support collaborative learning. However, it is essential to conduct research into how learners and teachers have experienced the use of new communication tools, such as discussion forums. In this contribution, our aim is to evaluate the effectiveness of a collaborative learning environment linked to a discussion forum in the context of e-learning. We examine the use of forums as a communication tool in learning contexts across four stages of the learning process via a Learning Management System (LMS) platform. We will focus on the specific integration and management of the forum at each stage, and how forums can be strategically and effectively integrated into each stage of the educational process, fostering constructive interaction and collaborative learning throughout.
Web 2.0 通信工具在支持协作学习方面有着巨大的潜力。然而，有必要对学习者和教师如何使用讨论论坛等新交流工具进行研究。在这篇论文中，我们的目的是评估在电子学习背景下与讨论论坛相关联的协作学习环境的有效性。我们将通过学习管理系统（LMS）平台，研究在学习过程的四个阶段中，论坛作为交流工具在学习环境中的使用情况。我们将重点关注论坛在每个阶段的具体整合和管理，以及如何将论坛战略性地、有效地整合到教育过程的每个阶段，促进整个过程中的建设性互动和协作学习。
{"title":"Place of forums in online communication through an LMS platform","authors":"Fatima Zahra Ouariach, Amel Nejjari, Soufiane Ouariach, Mohamed Khaldi","doi":"10.30574/wjaets.2024.11.1.0042","DOIUrl":"https://doi.org/10.30574/wjaets.2024.11.1.0042","url":null,"abstract":"Web 2.0 communication tools have great potential to support collaborative learning. However, it is essential to conduct research into how learners and teachers have experienced the use of new communication tools, such as discussion forums. In this contribution, our aim is to evaluate the effectiveness of a collaborative learning environment linked to a discussion forum in the context of e-learning. We examine the use of forums as a communication tool in learning contexts across four stages of the learning process via a Learning Management System (LMS) platform. We will focus on the specific integration and management of the forum at each stage, and how forums can be strategically and effectively integrated into each stage of the educational process, fostering constructive interaction and collaborative learning throughout.","PeriodicalId":275182,"journal":{"name":"World Journal of Advanced Engineering Technology and Sciences","volume":"4 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140423424","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}
Pub Date : 2024-02-28DOI: 10.30574/wjaets.2024.11.1.0032
Pinelopi Christani
In this paper, we attempt to present a student profile, referred to as "P" for anonymity reasons. P is a 19-year-old student attending the first year of high school, as he has already lost several years due to unjustified absences. P is a student of Albanian descent and has been accused of multiple instances of bullying within the school environment. To provide a comprehensive profile of P as a perpetrator of school bullying, it is deemed necessary to present the definition of the relevant phenomenon and what it entails.
在本文中，我们试图介绍一名学生的情况，出于匿名原因，我们将其称为 "P"。P 是一名 19 岁的高中一年级学生，由于无故旷课，他已经失去了几年的学业。P 是阿尔巴尼亚裔学生，曾多次被指控在学校环境中实施欺凌。为了全面介绍 P 作为校园欺凌实施者的情况，我们认为有必要介绍相关现象的定义及其内涵。
{"title":"Case study of a high school or lyceum student who systematically engages in school bullying (bully): Intervention techniques - memorandum of understanding between the educator and the student","authors":"Pinelopi Christani","doi":"10.30574/wjaets.2024.11.1.0032","DOIUrl":"https://doi.org/10.30574/wjaets.2024.11.1.0032","url":null,"abstract":"In this paper, we attempt to present a student profile, referred to as \"P\" for anonymity reasons. P is a 19-year-old student attending the first year of high school, as he has already lost several years due to unjustified absences. P is a student of Albanian descent and has been accused of multiple instances of bullying within the school environment. To provide a comprehensive profile of P as a perpetrator of school bullying, it is deemed necessary to present the definition of the relevant phenomenon and what it entails.","PeriodicalId":275182,"journal":{"name":"World Journal of Advanced Engineering Technology and Sciences","volume":"132 29","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140423787","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}
This article studies how the incorporation of xanthan gum affects the rheological properties and baking characteristics of a mixture of wheat and rice flours, with an equal ratio of 50% each. Different incorporation rates of xanthan gum ranging from 0% to 1.5% were studied. These different blends’ rheological and baking parameters were assessed using an alveograph and a Chopin volumeter. The results showed that the control sample, which contained no xanthan gum, had the poorest rheological and baking properties compared with the samples containing xanthan gum. The addition of xanthan gum considerably improved the rheological and baking properties of the composite flours. The sample with the lowest gum incorporation (0.25%) had the highest swelling index, as indicated by a working value (W) 160 10-4 J and had the highest specific volume (Vsp) 1.83 cm3 /g, outperforming the other samples that contained more gum.
{"title":"Optimizing the incorporation rate of xanthan gum in bread-making based on composite flours: The case of wheat-rice mixtures","authors":"LOPY Maurice Jean-François Sylvestre, DIOUF Abdou, SOW Mamadou Salif, DIAGNE Ndeye Wemsy, DIOUF Vieux Diouma","doi":"10.30574/wjaets.2024.11.1.0062","DOIUrl":"https://doi.org/10.30574/wjaets.2024.11.1.0062","url":null,"abstract":"This article studies how the incorporation of xanthan gum affects the rheological properties and baking characteristics of a mixture of wheat and rice flours, with an equal ratio of 50% each. Different incorporation rates of xanthan gum ranging from 0% to 1.5% were studied. These different blends’ rheological and baking parameters were assessed using an alveograph and a Chopin volumeter. The results showed that the control sample, which contained no xanthan gum, had the poorest rheological and baking properties compared with the samples containing xanthan gum. The addition of xanthan gum considerably improved the rheological and baking properties of the composite flours. The sample with the lowest gum incorporation (0.25%) had the highest swelling index, as indicated by a working value (W) 160 10-4 J and had the highest specific volume (Vsp) 1.83 cm3 /g, outperforming the other samples that contained more gum.","PeriodicalId":275182,"journal":{"name":"World Journal of Advanced Engineering Technology and Sciences","volume":"478 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140417132","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}
Pub Date : 2024-02-28DOI: 10.30574/wjaets.2024.11.1.0059
Andrew Ifesinachi, Ifeanyi Onyedika Ekemezie, Damilola Emmanuel Ogedengbe, Mojisola Abimbola Adeyinka, Ayodeji Abatan, Andrew Ifesinachi Daraojimba
This review paper explores the critical role of Human Resources (HR) in driving environmental sustainability initiatives within the oil and gas sector. Recognizing the significant environmental impacts associated with this industry, the paper underscores the imperative for sustainable practices and the unique position of HR to spearhead these efforts. The methodology comprises a systematic review of both academic and industry sources to identify effective HR strategies and practices that support environmental sustainability. The literature review section delves into theoretical frameworks that highlight the intersection of HR and sustainability, analyzes current sustainability practices within the oil and gas industry, and evaluates the impact of HR practices on environmental outcomes. Subsequent sections discuss strategic HR interventions in recruitment, training, leadership, and organizational culture that align with sustainability goals. The paper also addresses challenges in integrating sustainability into HR practices, including resistance to change and regulatory hurdles. Through case studies and best practices, it showcases successful examples of HR-led sustainability initiatives, drawing lessons and actionable insights. Looking forward, the paper identifies emerging trends in HR's role in sustainability and offers recommendations for policy and practice to enhance the effectiveness of HR in promoting environmental sustainability within the oil and gas sector. The conclusion synthesizes major findings, highlighting the strategic importance of HR in fostering environmental sustainability for organizational success and resilience.
{"title":"The role of HR in environmental sustainability initiatives within the oil and gas sector","authors":"Andrew Ifesinachi, Ifeanyi Onyedika Ekemezie, Damilola Emmanuel Ogedengbe, Mojisola Abimbola Adeyinka, Ayodeji Abatan, Andrew Ifesinachi Daraojimba","doi":"10.30574/wjaets.2024.11.1.0059","DOIUrl":"https://doi.org/10.30574/wjaets.2024.11.1.0059","url":null,"abstract":"This review paper explores the critical role of Human Resources (HR) in driving environmental sustainability initiatives within the oil and gas sector. Recognizing the significant environmental impacts associated with this industry, the paper underscores the imperative for sustainable practices and the unique position of HR to spearhead these efforts. The methodology comprises a systematic review of both academic and industry sources to identify effective HR strategies and practices that support environmental sustainability. The literature review section delves into theoretical frameworks that highlight the intersection of HR and sustainability, analyzes current sustainability practices within the oil and gas industry, and evaluates the impact of HR practices on environmental outcomes. Subsequent sections discuss strategic HR interventions in recruitment, training, leadership, and organizational culture that align with sustainability goals. The paper also addresses challenges in integrating sustainability into HR practices, including resistance to change and regulatory hurdles. Through case studies and best practices, it showcases successful examples of HR-led sustainability initiatives, drawing lessons and actionable insights. Looking forward, the paper identifies emerging trends in HR's role in sustainability and offers recommendations for policy and practice to enhance the effectiveness of HR in promoting environmental sustainability within the oil and gas sector. The conclusion synthesizes major findings, highlighting the strategic importance of HR in fostering environmental sustainability for organizational success and resilience.","PeriodicalId":275182,"journal":{"name":"World Journal of Advanced Engineering Technology and Sciences","volume":"18 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140420080","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}
Pub Date : 2024-01-30DOI: 10.30574/wjaets.2024.11.1.0316
Adwithiya Pachisia, Ishita Verma, Preethi B Meena
The present article is a review of existing technology that can help predict as well as manage floods in India. Since some of the major metropolitan cities in the country have been regularly experiencing floods over the past few decades, this not only puts property at risk, but also increases the probability of loss of life due to the floods. Today, novel techniques of predicting floods have replaced the traditional ones. One such technology is the use of artificial intelligence. This has been highlighted in the article as well. This does not mean that traditional methods for predicting and preventing floods have become outdated. It simply means that newer technology can help strengthen existing ones and aid in saving lives. The information that can be captured by the Artificial Intelligence (AI) can benefit the community in leveraging and building the community resources. There is a need to give equal importance to rehabilitation of affected people post the disaster. The authors have also highlighted how modern-day technology can help provide human services such as counselling to survivors during and after floods.
{"title":"Reviewing the use of technology to manage floods in India","authors":"Adwithiya Pachisia, Ishita Verma, Preethi B Meena","doi":"10.30574/wjaets.2024.11.1.0316","DOIUrl":"https://doi.org/10.30574/wjaets.2024.11.1.0316","url":null,"abstract":"The present article is a review of existing technology that can help predict as well as manage floods in India. Since some of the major metropolitan cities in the country have been regularly experiencing floods over the past few decades, this not only puts property at risk, but also increases the probability of loss of life due to the floods. Today, novel techniques of predicting floods have replaced the traditional ones. One such technology is the use of artificial intelligence. This has been highlighted in the article as well. This does not mean that traditional methods for predicting and preventing floods have become outdated. It simply means that newer technology can help strengthen existing ones and aid in saving lives. The information that can be captured by the Artificial Intelligence (AI) can benefit the community in leveraging and building the community resources. There is a need to give equal importance to rehabilitation of affected people post the disaster. The authors have also highlighted how modern-day technology can help provide human services such as counselling to survivors during and after floods.","PeriodicalId":275182,"journal":{"name":"World Journal of Advanced Engineering Technology and Sciences","volume":"9 40","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139591578","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}
Pub Date : 2024-01-30DOI: 10.30574/wjaets.2024.11.1.0315
I Gede Sujana Eka Putra, Ni Luh Putu Labasariyani
Radio Frequency Identification is a compact wireless technology that is superior and has been developed in the commercial and educational for example in automatic identification in the hospital patient registration. This research aims to improve patient registration services to be more practical during outpatient registration at hospitals. Currently, hospital outpatient registration is still carried out semi-computerized where patients come to the reception desk and then register by filling in a registration form. Next, the reception staff performs data entry from the registration form that has been filled in by the patient. If a lot of patients come, there will be a queue of patients because it takes quite a long time for the registration process. Based on the problems faced, this research carried out the development of a patient data management system using NFC cards which contain patient medical record number data. When a patient visits the hospital, the patient taps the medical record card and inputs the complaint and the doctor they are going to, then the patient gets a queue number for consultation, until the patient consults with a doctor and gets the medicine prescribed by the doctor through the use of the system. Testing the system by reading and writing data on the NFC card on the card reader/writer unit, the test results showed that the maximum reading distance for the NFC card was 7 cm with a reading angle relative to the NFC reader/writer with 300 can read the NFC card.
{"title":"Medical records information system based on prototyping model using automatic identifier NFC card","authors":"I Gede Sujana Eka Putra, Ni Luh Putu Labasariyani","doi":"10.30574/wjaets.2024.11.1.0315","DOIUrl":"https://doi.org/10.30574/wjaets.2024.11.1.0315","url":null,"abstract":"Radio Frequency Identification is a compact wireless technology that is superior and has been developed in the commercial and educational for example in automatic identification in the hospital patient registration. This research aims to improve patient registration services to be more practical during outpatient registration at hospitals. Currently, hospital outpatient registration is still carried out semi-computerized where patients come to the reception desk and then register by filling in a registration form. Next, the reception staff performs data entry from the registration form that has been filled in by the patient. If a lot of patients come, there will be a queue of patients because it takes quite a long time for the registration process. Based on the problems faced, this research carried out the development of a patient data management system using NFC cards which contain patient medical record number data. When a patient visits the hospital, the patient taps the medical record card and inputs the complaint and the doctor they are going to, then the patient gets a queue number for consultation, until the patient consults with a doctor and gets the medicine prescribed by the doctor through the use of the system. Testing the system by reading and writing data on the NFC card on the card reader/writer unit, the test results showed that the maximum reading distance for the NFC card was 7 cm with a reading angle relative to the NFC reader/writer with 300 can read the NFC card.","PeriodicalId":275182,"journal":{"name":"World Journal of Advanced Engineering Technology and Sciences","volume":"8 16","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139591655","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}
Pub Date : 2024-01-30DOI: 10.30574/wjbphs.2024.17.1.0522
Yogesh Mishra
The main objective of the present study to find fish-consumption level, relationship between consumers’ performances and their socioeconomic characteristics and to investigate factors affecting consumer fish consumption and prospective fish consumption in district kaushambi. The study was carried out in chail tehsil of District Kaushambi Uttar Pradesh. Fish is a very important source of protein as it maintains healthy body and one of the most important sources of animal protein, vitamins and minerals. The paper presented here is to assess the fish consumption among the people of district Kaushambi. 150 respondents were chosen during July 2022 to December 2022 using a well-designed validated questionnaire. 50% of the respondents reported that they consume fish twice in a week and 30% respondents reported that they consume fish four times in a month. 75% of the respondents revealed that fish eating is good for health. About 70% of the respondents were found to unavailability of their choice fish. About 80% of the respondents were male members in the study. About 60% of the respondents were found to be in the age group of 30-60 years. Most of the respondents were 3-5 members family, literate and above poverty line. The constraints faced by the respondents were non availability of quality fish, high cost, lack of retail market, distance and scarcity of fish. Finally future prospects of consumption were discussed by establishment of Fish Market and Price Information System (FMPIS), e-commerce platforms, online market places to fish farmers/consumers in the study area.
{"title":"A study on present and prospective fish consumption pattern in district Kaushambi Uttar Pradesh","authors":"Yogesh Mishra","doi":"10.30574/wjbphs.2024.17.1.0522","DOIUrl":"https://doi.org/10.30574/wjbphs.2024.17.1.0522","url":null,"abstract":"The main objective of the present study to find fish-consumption level, relationship between consumers’ performances and their socioeconomic characteristics and to investigate factors affecting consumer fish consumption and prospective fish consumption in district kaushambi. The study was carried out in chail tehsil of District Kaushambi Uttar Pradesh. Fish is a very important source of protein as it maintains healthy body and one of the most important sources of animal protein, vitamins and minerals. The paper presented here is to assess the fish consumption among the people of district Kaushambi. 150 respondents were chosen during July 2022 to December 2022 using a well-designed validated questionnaire. 50% of the respondents reported that they consume fish twice in a week and 30% respondents reported that they consume fish four times in a month. 75% of the respondents revealed that fish eating is good for health. About 70% of the respondents were found to unavailability of their choice fish. About 80% of the respondents were male members in the study. About 60% of the respondents were found to be in the age group of 30-60 years. Most of the respondents were 3-5 members family, literate and above poverty line. The constraints faced by the respondents were non availability of quality fish, high cost, lack of retail market, distance and scarcity of fish. Finally future prospects of consumption were discussed by establishment of Fish Market and Price Information System (FMPIS), e-commerce platforms, online market places to fish farmers/consumers in the study area.","PeriodicalId":275182,"journal":{"name":"World Journal of Advanced Engineering Technology and Sciences","volume":"12 27","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139591425","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}
Pub Date : 2024-01-30DOI: 10.30574/wjaets.2024.11.1.0016
Yuto Amano, Hidefumi Saito, Kana Akinaga, Takahiro Adachi
The Electric Environmental Control System (EECS), which uses an electric compressor to draw in outside air instead of the engine bleed, is under consideration. In this study, the case of EECS operating in a grounded parking status is discussed. The pressure ratios for the electric compressor and the air cycle machine compressor are set as variable parameters. A thermodynamic analysis is performed to clarify the operating conditions of the system, taking dehumidification into account. The coefficient of performance is obtained, and it is found that the maximum value is obtained under the condition where the pressure ratio of the electric compressor is the smallest.
{"title":"Optimal operating conditions for an electric ECS in ground parking status","authors":"Yuto Amano, Hidefumi Saito, Kana Akinaga, Takahiro Adachi","doi":"10.30574/wjaets.2024.11.1.0016","DOIUrl":"https://doi.org/10.30574/wjaets.2024.11.1.0016","url":null,"abstract":"The Electric Environmental Control System (EECS), which uses an electric compressor to draw in outside air instead of the engine bleed, is under consideration. In this study, the case of EECS operating in a grounded parking status is discussed. The pressure ratios for the electric compressor and the air cycle machine compressor are set as variable parameters. A thermodynamic analysis is performed to clarify the operating conditions of the system, taking dehumidification into account. The coefficient of performance is obtained, and it is found that the maximum value is obtained under the condition where the pressure ratio of the electric compressor is the smallest.","PeriodicalId":275182,"journal":{"name":"World Journal of Advanced Engineering Technology and Sciences","volume":"13 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139591243","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}
Potential toxic elements in sediments and water are harmful to humans and other organisms even at low concentration. Therefore, the objective of this paper was employed to evaluate the concentrations and contamination factors of potential toxic elements (PTE) in sediments of selected areas in Egi communities (Obagi, Oboburu and Ogbogu) in Ogba/Egbema/Ndoni LGA of Rivers State, Nigeria using AAS (GBC XplorAA) after mixed-acid wet digestion of the sediment. The result of the levels of PTEs reveals that the highest mean were iron (6983±123 mg/Kg), manganese (19.42±6.87 mg/Kg), zinc (11.73±2.10 mg/Kg) copper (7.057±1.08 mg/Kg), and lead (5.871±2.76 mg/Kg). The result also showed that the most toxic metals had values as follows: cadmium: Obagi (1.244±0.01 mg/Kg), Oboburu (0.411±0.01 mg/Kg) and (0.051±0.01 mg/Kg); arsenic; Ogbogu (2.481±0.31 mg/Kg), Obagi (1.452±0.02 mg/Kg), and Oboburu (0.991±0.02 mg/Kg), copper Oboburu (5.333±0.010 mg/Kg), Obagi (6.800±0.07 mg/Kg), and Ogbogu (9.037±0.12 mg/Kg). The geo-accumulation (Igeo) values indicated uncontaminated for all the PTEs. The contamination factor shows that all samples had low contamination. The enrichment factor for Obagi; Pb (1.011), As (0.675), Cr (0.467), Cu (1.052), Zn (0.650), Ni (0.493), and Co (0.767) were of biogenic, while Cd (45.42) was of anthropogenic origin. For Oboburu; biogenic origin were As (0.321), Cr (0.188), Mn (0.003), Cu (0.574), Zn (0.709), Ni (0.313), and Co (0.454) while Pb (2.100), Cd (5.756) were of anthropogenic origin. Ogbogu; Cr (0.845) and Mn (0.807) were of biogenic while Pb (5.079), Cd (4.241), As (4.770), Cu (5.780), Zn (2.339), Ni (2.135) and Co (5.586) were of anthropogenic sources. The order of toxicity was Fe>Mn>Zn>Cu>Cr>Pb>Ni>Co>Cd>As>Hg. The order of impact were Ogbogu>Obagi>Oboburu.
{"title":"Evaluation of concentrations and contamination factors of potentially toxic elements in sediments of Egi communities, Rivers State, Nigeria","authors":"Elechi Owhoeke, Pereware Adowei, Chukwuyemike Emmanuel Akankali","doi":"10.30574/wjaets.2024.11.1.0308","DOIUrl":"https://doi.org/10.30574/wjaets.2024.11.1.0308","url":null,"abstract":"Potential toxic elements in sediments and water are harmful to humans and other organisms even at low concentration. Therefore, the objective of this paper was employed to evaluate the concentrations and contamination factors of potential toxic elements (PTE) in sediments of selected areas in Egi communities (Obagi, Oboburu and Ogbogu) in Ogba/Egbema/Ndoni LGA of Rivers State, Nigeria using AAS (GBC XplorAA) after mixed-acid wet digestion of the sediment. The result of the levels of PTEs reveals that the highest mean were iron (6983±123 mg/Kg), manganese (19.42±6.87 mg/Kg), zinc (11.73±2.10 mg/Kg) copper (7.057±1.08 mg/Kg), and lead (5.871±2.76 mg/Kg). The result also showed that the most toxic metals had values as follows: cadmium: Obagi (1.244±0.01 mg/Kg), Oboburu (0.411±0.01 mg/Kg) and (0.051±0.01 mg/Kg); arsenic; Ogbogu (2.481±0.31 mg/Kg), Obagi (1.452±0.02 mg/Kg), and Oboburu (0.991±0.02 mg/Kg), copper Oboburu (5.333±0.010 mg/Kg), Obagi (6.800±0.07 mg/Kg), and Ogbogu (9.037±0.12 mg/Kg). The geo-accumulation (Igeo) values indicated uncontaminated for all the PTEs. The contamination factor shows that all samples had low contamination. The enrichment factor for Obagi; Pb (1.011), As (0.675), Cr (0.467), Cu (1.052), Zn (0.650), Ni (0.493), and Co (0.767) were of biogenic, while Cd (45.42) was of anthropogenic origin. For Oboburu; biogenic origin were As (0.321), Cr (0.188), Mn (0.003), Cu (0.574), Zn (0.709), Ni (0.313), and Co (0.454) while Pb (2.100), Cd (5.756) were of anthropogenic origin. Ogbogu; Cr (0.845) and Mn (0.807) were of biogenic while Pb (5.079), Cd (4.241), As (4.770), Cu (5.780), Zn (2.339), Ni (2.135) and Co (5.586) were of anthropogenic sources. The order of toxicity was Fe>Mn>Zn>Cu>Cr>Pb>Ni>Co>Cd>As>Hg. The order of impact were Ogbogu>Obagi>Oboburu.","PeriodicalId":275182,"journal":{"name":"World Journal of Advanced Engineering Technology and Sciences","volume":"8 18","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139591653","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}
Pub Date : 2024-01-30DOI: 10.30574/wjaets.2024.11.1.0017
Diem-Thuy Vien-Nguyen, Phi-Hung Tran, Quynh-Lam Ngoc-Le, Ngoc-Hien Do
The scheduling problem has always been the concern of most companies in the flexible Job shop or Job shop environments because of its complexity. It is really a challenge for researchers to solve or find out the optimum solution. The lead time production at Teak Woods line in a wood processing company, a case study, faced with about 80% of orders which could not be done on time, although its capacity meet requirements. Therefore, it is very useful and necessary to set up a production scheduling model in order to reduce production time and synchronize the product’s parts through efficient modulation in an optimum sequence of jobs on the shopfloor. A combination of Genetic Algorithm and Shifting Bottleneck Heuristics was used to find out high quality solutions. It shows that the productivity increased from 2.32 m3/day to 4.3 m3/day (up 98.27%); Processing time was reduced from 3248.6 minutes to 1352.1 minutes (down 58.38%); The sync time decreased from 7554.8 minutes to 350.8 minutes (down 95.36%).
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