Journal of Fundamental and Applied Sciences最新文献

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Light intensity and temperature effect on the DC parameters of optimized nc-3C-Sic:H Based solar cell 光强和温度对优化的nc-3C-Sic:H基太阳能电池直流参数的影响
Journal of Fundamental and Applied Sciences Pub Date : 2023-06-02 DOI: 10.4314/jfas.v14i1.6
Y. Belhadji
{"title":"Light intensity and temperature effect on the DC parameters of optimized nc-3C-Sic:H Based solar cell","authors":"Y. Belhadji","doi":"10.4314/jfas.v14i1.6","DOIUrl":"https://doi.org/10.4314/jfas.v14i1.6","url":null,"abstract":"The Hydrogenated nanocrystalline cubic silicon carbide (nc-3C-Si:H) based solar cell with interesting efficiency, find her place promoted in photovoltaic  applications. To improve the sunlight absorption and its electrical performances, the structure of the solar cell can be optimized, combining new  materials to form multi-layers solar cells. In this context, the nc-3C-SiC:H, having a wide band gap, excellent optical, electrical and structural properties is used as wide bandgap absorber layer. In this work, we report a theoretical study of new optimized nc-3C-SiC:H/ i-a-Si:H/ a-Si:H/ µc-Si solar cell using the  SCAPS one dimension program. We investigate the temperature and incident light intensity effect on the DC parameters of the solar cell. For the  proposed structure, optimal power conversion efficiency (PCE) of 16.89% is registered under AM1.5G spectrum at room temperature.","PeriodicalId":15885,"journal":{"name":"Journal of Fundamental and Applied Sciences","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41891444","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
Pig based water quality assessment in El-Hai River Basin, Elkantara Plain, Algeria 阿尔及利亚埃尔坎塔拉平原El Hai河流域基于猪的水质评估
Journal of Fundamental and Applied Sciences Pub Date : 2023-06-02 DOI: 10.4314/jfas.v14i1.2
D. Kerboub, C. Fehdi, A. El Hmaidi, H. Ousmana, Y. Azzi, C. Khemissi
{"title":"Pig based water quality assessment in El-Hai River Basin, Elkantara Plain, Algeria","authors":"D. Kerboub, C. Fehdi, A. El Hmaidi, H. Ousmana, Y. Azzi, C. Khemissi","doi":"10.4314/jfas.v14i1.2","DOIUrl":"https://doi.org/10.4314/jfas.v14i1.2","url":null,"abstract":"Groundwater of the El-Kantara plain needs greater attention, because it is the alternative source of water for domestic and agricultural purposes. Water  pollution affects both water quality and human health. Hence it is essential for continuous monitoring of the quality of groundwater so that pollution can  be minimized. This study aims to evaluate the degree and extent of contamination of the Mio-Plio-Quaternary alluvial aquifer, in the El-Kantara area,  Northern Biskra region (Algeria). A pollution index of groundwater (PIG) is proposed for quantification of water contamination at eleven (11) sampling  different wells during four times at each well (dry period: September 2011/2014 and wet period February 2012/2015). PIG quantifies the status of concentrations of water quality measures with respect to their drinking water quality standards. The computed values of Pollution Index Groundwater  (PIG) of El-Kantara aquifer in El-Hai River Basin vary from 0.746 (Insignificant pollution during wet period; February 2015) to 6.287(Very high pollution  during dry period; September 2014). Spatial variation map has been prepared using GIS reveled that most of the study area accounts for very high  pollution zones (61.36% of samples). ","PeriodicalId":15885,"journal":{"name":"Journal of Fundamental and Applied Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43983721","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
Using PCA and ANN in the explanation of groundwater chemism. Case of the Messaad Plateau. South Algerian Steppe Region 用主成分分析和人工神经网络解释地下水化学。Messaad高原的案例。南阿尔及利亚大草原地区
Journal of Fundamental and Applied Sciences Pub Date : 2023-06-02 DOI: 10.4314/jfas.v14i1.5
B. Rahmani, F. Bâali, C. Fehdi
{"title":"Using PCA and ANN in the explanation of groundwater chemism. Case of the Messaad Plateau. South Algerian Steppe Region","authors":"B. Rahmani, F. Bâali, C. Fehdi","doi":"10.4314/jfas.v14i1.5","DOIUrl":"https://doi.org/10.4314/jfas.v14i1.5","url":null,"abstract":"The objective of this work is to study the chemistry of groundwater in the messaad plateau which is located 300km south of the capital of Algiers. The  results obtained showed that the waters are very strongly mineralized overall, with a predominance of calcium sulphate facies and calcium chloride  facies. a high degree of mineralization in the South and South-East part of the study area near Oued Messaad. The Principal Component Analysis (PCA)  has shown that the increase in mineralization is mainly due to the dissolution of evaporative mineral-rich salt-bearing formations. The hydro-chemical  model based on Artificial Neuron Networks (ANN) of the multilayer perceptron (MLP) type has shown that the SO4 2-,Cl- ,Ca2+,Na+ ions are the most  important factors influencing the electrical conductivity of water. These ions are the result of the dissolution of gypsum and halite continuously in the  clays and marls of the Barremian formations.","PeriodicalId":15885,"journal":{"name":"Journal of Fundamental and Applied Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47459148","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
Composition and structure of water birds in some areas of northwestern Algeria 阿尔及利亚西北部部分地区水鸟的组成和结构
Journal of Fundamental and Applied Sciences Pub Date : 2023-06-02 DOI: 10.4314/jfas.v14i1.1
M. Adamou-djerbaoui, H. Latab, W. Dahmani, S. Omar, M. Bouacha
{"title":"Composition and structure of water birds in some areas of northwestern Algeria","authors":"M. Adamou-djerbaoui, H. Latab, W. Dahmani, S. Omar, M. Bouacha","doi":"10.4314/jfas.v14i1.1","DOIUrl":"https://doi.org/10.4314/jfas.v14i1.1","url":null,"abstract":"Wetlands have an inestimable importance in different regions of the world. Algeria is rich in wetlands which are among the most precious resources in  terms of biological diversity. Water birds are particularly attractive and important because of their long-distance migrations and their potential as  indicators of the status and value of wetlands. This is how; works on the avifauna are still more and rarer, in Algeria and particularly in the area of Tiaret. It’s, with this in mind, that our study, which relates to the assessment of the biodiversity of birds in the wetlands of Tiaret area and Tissemsilt area, over a  period of two years, from 2016 to 2018, and this in order to inventory and determine the distribution of all species of birds, photographed or captured  and recognize species of ecological, trophic and phenological interest, located in these regions which remains still virgin.","PeriodicalId":15885,"journal":{"name":"Journal of Fundamental and Applied Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46188682","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
Effect of rolled aggregate powder on mechanical strength and durability of mortars exposed to acid attack 碾压骨料粉对酸蚀砂浆机械强度和耐久性的影响
Journal of Fundamental and Applied Sciences Pub Date : 2023-06-02 DOI: 10.4314/jfas.v14i1.4
A. Salhi, A. Kriker, T. Tioua, Y. Abimouloud
{"title":"Effect of rolled aggregate powder on mechanical strength and durability of mortars exposed to acid attack","authors":"A. Salhi, A. Kriker, T. Tioua, Y. Abimouloud","doi":"10.4314/jfas.v14i1.4","DOIUrl":"https://doi.org/10.4314/jfas.v14i1.4","url":null,"abstract":"This paper outlines an investigation into the effect of incorporating rolled aggregate powder as a cement replacement on mortar mechanical strength  and resistance against sulfuric acid attack. The study examined compressive strength, and mass loss changes of mortars based on 10, 20 and 30% rolled  aggregate powder replacement rates immersed in fresh water and 12 weeks in 5% sulfuric acid solutions. Experimental results showed improved  compressive strength, with 10 and 20% rolled aggregate powder replacement rates and enhance mortar resistance to aggressive sulfuric acid attack.","PeriodicalId":15885,"journal":{"name":"Journal of Fundamental and Applied Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45271453","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
Characteristics of hydraulic jump on rough minor bed in a rectangular compound channel 矩形复合河道中粗糙小河床的水力跳变特性
Journal of Fundamental and Applied Sciences Pub Date : 2023-06-02 DOI: 10.4314/jfas.v14i1.3
W. Djamaa, S. Lacheheb, A. Ghomri
{"title":"Characteristics of hydraulic jump on rough minor bed in a rectangular compound channel","authors":"W. Djamaa, S. Lacheheb, A. Ghomri","doi":"10.4314/jfas.v14i1.3","DOIUrl":"https://doi.org/10.4314/jfas.v14i1.3","url":null,"abstract":"A hydraulic jump is a characteristic phenomenon in open channel flow, downstream of block ramps or rock chutes a hydraulic jump can occur over a  rough bed with great energy dissipation. This paper analyses the hydraulic jump that occurs in homogeneous rough minor beds in rectangular  compound channels. the parameters that influence the length of the jump were systematically investigated [24]. the analyses of the phenomenon were  conducted using the general jump equation. the experimental data were elaborated in order to supply a new formulation of the general jump equation  that accounts for the minor bed roughness. New formulas that satisfactorily agree with the experimental data are proposed. The results showed that  rough beds can be used to dissipate the excess hydraulic jump energy instilling basins.","PeriodicalId":15885,"journal":{"name":"Journal of Fundamental and Applied Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49193612","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
Développement d’une analyse du cycle de vie dynamique pour l’évaluation des effets d’incendie industriel. Cas de la raffinerie de skikda 开发用于评估工业火灾影响的动态生命周期分析。以斯基达炼油厂为例
Journal of Fundamental and Applied Sciences Pub Date : 2023-06-02 DOI: 10.4314/jfas.v14i1.7
S. Chettouh
{"title":"Développement d’une analyse du cycle de vie dynamique pour l’évaluation des effets d’incendie industriel. Cas de la raffinerie de skikda","authors":"S. Chettouh","doi":"10.4314/jfas.v14i1.7","DOIUrl":"https://doi.org/10.4314/jfas.v14i1.7","url":null,"abstract":"L'évaluation de l'impact du cycle de vie (EICV) est la troisième phase de l'Analyse du Cycle de Vie (ACV) décrite dans la norme ISO 14042. L'objectif de l'ACV est d'évaluer l'inventaire du cycle de vie (ICV) de produit afin de mieux comprendre son importance pour l'environnement. Cependant, l’EICV exclut généralement les effets spatiaux, temporels, les seuils et la relation dose-réponse et combine les émissions ou les activités dans l'espace et/ou le temps. Cela peut diminuer la pertinence du résultat de la méthode. La méthodologie ACV Dynamique orientée Incendie (ACVDI) proposée dans ce travail a pour objectif de compléter la norme internationale ISO 14042 dans le domaine des incendies, Elle consiste à combiner la méthode ACV-Incendie avec le Modèle Numérique de Dispersion (MND). Cette méthodologie est basée sur l'utilisation du MND pour évaluer les concentrations des polluants et les effets thermiques résultants des scénarios d'accident. Dans cette étude, la méthodologie de l'ACV dynamique - Incendie est appliquée à une étude de cas pour le pétrole la gestion des processus de production.","PeriodicalId":15885,"journal":{"name":"Journal of Fundamental and Applied Sciences","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136041496","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
Evaluation of the antibacterial and anticogulant activities of Linum usitatissimum L.extracts 枸杞提取物的抗菌和抗凝血活性评价
Journal of Fundamental and Applied Sciences Pub Date : 2023-05-21 DOI: 10.4314/jfas.v12i2.10
S. Boukeria, S. R. Mnasri, K. Kadi, A. Benbott, H. Bougueria, K. Biri, W. Lazbbache
{"title":"Evaluation of the antibacterial and anticogulant activities of Linum usitatissimum L.extracts","authors":"S. Boukeria, S. R. Mnasri, K. Kadi, A. Benbott, H. Bougueria, K. Biri, W. Lazbbache","doi":"10.4314/jfas.v12i2.10","DOIUrl":"https://doi.org/10.4314/jfas.v12i2.10","url":null,"abstract":"The objective of this study is to evaluate the phytochemical constituents and anticoagulant, and antibacterial activities of phenolic extracts obtained from flaxseed. The quantitative estimation of total phenols by the colorimetric method showed that both aqueous and methanolic extracts are low in these compounds. The evaluation of the antibacterial activity of polyphenols was carried out by the disc method by determining the minimum inhibitory concentration (MIC). The results showed that no antibacterial activity with polyphenols was observed; against the five bacteria tested.The anticoagulant activity of polyphenols was also evaluated in vitro using the cephaline-kaolin (TCK) and Quick time (TQ) tests. The coagulation times obtained on normal plasma indicate that they have moderate activity on both coagulation pathways.","PeriodicalId":15885,"journal":{"name":"Journal of Fundamental and Applied Sciences","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135429082","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
THE EFFECT OF BUILDING HEIGHTS ON OUTDOOR WIND ENVIRONMENT OF THE RESIDENTIAL SECTOR / CAS OF EL EULMA CITY, Algeria 建筑高度对阿尔及利亚埃尔尤尔马市CAS住宅区室外风环境的影响
Journal of Fundamental and Applied Sciences Pub Date : 2021-11-08 DOI: 10.4314/JFAS.V13I2.21
A. Boudoukha, N. Zemmouri
{"title":"THE EFFECT OF BUILDING HEIGHTS ON OUTDOOR WIND ENVIRONMENT OF THE RESIDENTIAL SECTOR / CAS OF EL EULMA CITY, Algeria","authors":"A. Boudoukha, N. Zemmouri","doi":"10.4314/JFAS.V13I2.21","DOIUrl":"https://doi.org/10.4314/JFAS.V13I2.21","url":null,"abstract":"The residential open spaces microclimate especially the wind environment, is widely affected by its surrounding buildings. This paper aims to assess the influence of residential buildings on urban microclimate in the North Est region of Algeria. This assessment performed using the in-situ measurements of different microclimate’s settings, during summer and winter. Comparing between two existing city housing blocks, the present study showed that, the higher one results lower temperatures outdoor spaces in winter and summer. Furthermore, the passage under the building improves the accessibility, the ventilation in the inside corner of the city block, but may increase the wind speed so it causes pedestrians discomfort and safety issues.","PeriodicalId":15885,"journal":{"name":"Journal of Fundamental and Applied Sciences","volume":"13 1","pages":"1014-1029"},"PeriodicalIF":0.0,"publicationDate":"2021-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46285231","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
A multicriteria decision based assessment of agricultural solid wastes as potential feedstock for electricity generation in Nigeria 尼日利亚农业固体废物作为潜在发电原料的多标准决策评估
Journal of Fundamental and Applied Sciences Pub Date : 2021-09-01 DOI: 10.4314/jfas.v13i3.18
H. Salami, S. Lawal, T. Bademosi, O. Olowosokedile, H. Olalekan
{"title":"A multicriteria decision based assessment of agricultural solid wastes as potential feedstock for electricity generation in Nigeria","authors":"H. Salami, S. Lawal, T. Bademosi, O. Olowosokedile, H. Olalekan","doi":"10.4314/jfas.v13i3.18","DOIUrl":"https://doi.org/10.4314/jfas.v13i3.18","url":null,"abstract":"An effective method of managing solid wastes from agricultural processing is through thermochemical conversion to energy-dense and carbon-neutral energy products; which relieves the issue of depleting global resources, solves the problem of over-reliance on fossil fuel, reduces the impact on the environment, and brings economic benefits. In this study, the suitability of agricultural solid wastes as potential feedstock for electricity generation in Nigeria via a combined pyrolysis–steam power plant technology was assessed. Technique for order of preference by similarity to ideal solution was used to identify the most appropriate raw material for electricity generation among the considered alternatives–rice husk, corncob, and palm kernel shell. These wastes showed high electricity generation potential (232–2077GWh per annum), high profitability index, and high carbon reduction benefit (about1428kg CO2 eq. /m3of bio-oil).","PeriodicalId":15885,"journal":{"name":"Journal of Fundamental and Applied Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49256640","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
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