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Thermo-mechanical properties of bio-insulation from embedding bird eggshell into ceramics for bioengineering applications 生物工程用鸟蛋壳包埋陶瓷生物绝热力学性能研究
Journal of Fundamental and Applied Sciences Pub Date : 2021-08-22 DOI: 10.4314/JFAS.V13I3.21
P. Shamunee, P. Selarak, N. Tangboriboon
{"title":"Thermo-mechanical properties of bio-insulation from embedding bird eggshell into ceramics for bioengineering applications","authors":"P. Shamunee, P. Selarak, N. Tangboriboon","doi":"10.4314/JFAS.V13I3.21","DOIUrl":"https://doi.org/10.4314/JFAS.V13I3.21","url":null,"abstract":"Incorporating bird eggshell in porcelain can improve its physical, thermal, and mechanical properties, resulting in dense porcelain products. Calcium carbonate (CaCO3) from eggshells can react with silica (SiO2) and alumina (Al2O3) in porcelain clay to form calcium feldspar or anorthite (CaAl2Si2O8), which lowers the sintering temperature to <1000 °C. In this study, 0, 5, 10, 15, and 20 vol.% bird eggshell powder was added to porcelain slips and fired at 600, 700, 800, and 900 °C for 1, 3, and 5 h. The best formula of porcelain product having good mechanical and thermal properties was obtained at 10 vol.% quail eggshell-added porcelain fired for 5 h at 900 °C. The obtained sample demonstrated a relatively low thermal expansion coefficient (1.0515x10-6 °C-1), high compressive strength (6200 N mm-2), and high hardness (12.2 ± 0.30 HV).","PeriodicalId":15885,"journal":{"name":"Journal of Fundamental and Applied Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43882913","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
Rayleigh-Benard convection study in a cavity for a shear thinning fluid 剪切变稀流体在空腔中的瑞利-贝纳德对流研究
Journal of Fundamental and Applied Sciences Pub Date : 2021-08-16 DOI: 10.4314/JFAS.V13I3.14
B. Benyahia, N. A. Messouadene
{"title":"Rayleigh-Benard convection study in a cavity for a shear thinning fluid","authors":"B. Benyahia, N. A. Messouadene","doi":"10.4314/JFAS.V13I3.14","DOIUrl":"https://doi.org/10.4314/JFAS.V13I3.14","url":null,"abstract":"  \u0000Rayleigh-Bénard's convection is a classic problem of heat transfer. Since the 1900s, studies for Newtonian fluids have been widely developed in this field and phenomena well understood. On the other hand, the complexity of non-Newtonian behavior makes the number of studies much lower. Among the non-Newtonian behavior, the shear-thinning fluid studies are even rarer. This work focuses on a numerical study of natural convection for a non-Newtonian fluid shear thinning, in the Rayleigh-Bénard configuration. The Carreau-Yasuda model describes the shear thinning behavior. The convective flow considered is confined in a cavity, which is subjected to a vertical temperature gradient, heated from below and cooled from above. The transport equations are discretized by the finite volume method and are solved numerically using a CFD code: \"Ansys Fluent\". The influence of the control parameters on the flow and heat transfer such as the Rayleigh 𝑅𝑎 number, the aspect ratio, 𝐴, the Prandtl numbers, 𝑃𝑟, the power index 𝑛 and the time constant 𝐸, are studied.","PeriodicalId":15885,"journal":{"name":"Journal of Fundamental and Applied Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43776485","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
Genetic diversity analysis of Tunisian olive cultivar by SNP markers 突尼斯橄榄品种遗传多样性的SNP标记分析
Journal of Fundamental and Applied Sciences Pub Date : 2021-08-16 DOI: 10.4314/JFAS.V13I3.16
N. Ayadi, R. B. Ayed, Ahmed Rebai
{"title":"Genetic diversity analysis of Tunisian olive cultivar by SNP markers","authors":"N. Ayadi, R. B. Ayed, Ahmed Rebai","doi":"10.4314/JFAS.V13I3.16","DOIUrl":"https://doi.org/10.4314/JFAS.V13I3.16","url":null,"abstract":"To study the genetic diversity of 17 olive tree cultivars (Olea Europaea L.) sampled from different Mediterranean regions, we screened three SNP markers (ACP-1, ANTHO3, SOD) located in three different genes. The genotypes of the sampled cultivars were depicted via the genotyping analysis. The dendrogram based on cultivar genotypes generated by SNP markers revealed three clusters which were consistent with the established classification. In addition, we compared the results obtained with agro-morphological and chemical data using bioinformatic analyses. This work offers a more relevant classification of the genetic classification of the Tunisian olive cultivars.","PeriodicalId":15885,"journal":{"name":"Journal of Fundamental and Applied Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47222451","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
An assessment of the effects of herbicides on the population density of earthworms (Lumbricus terrestris) in soil 除草剂对土壤中蚯蚓种群密度影响的评价
Journal of Fundamental and Applied Sciences Pub Date : 2021-08-14 DOI: 10.4314/JFAS.V13I3.11
M. Hudu, A. Issifu, I. A. Zarouk
{"title":"An assessment of the effects of herbicides on the population density of earthworms (Lumbricus terrestris) in soil","authors":"M. Hudu, A. Issifu, I. A. Zarouk","doi":"10.4314/JFAS.V13I3.11","DOIUrl":"https://doi.org/10.4314/JFAS.V13I3.11","url":null,"abstract":"Continuous burrowing, ingesting, turning, mixing, aeration and the improvement of the drainage of soil are the major roles played by earthworms in renewing soil fertility. Larger amounts of herbicides are applied to the soil continuously by farmers as they realize the importance of these herbicides. These herbicides could then accumulate to toxic levels in the soil and become lethal to microorganisms, plant, wild life and man. In this study, we sought to assess the effects of formulated products of glyphosate, atrazine and 2, 4-dichlorophenoxyacetic acid (2, 4-D) on the survival and reproduction of the tropical earthworm (Lumbricus terrestris). The highest number of deaths of adult worms was recorded for 2, 4-D formulation at 0.5 mg/kg and the lowest in glyphosate formulation at 0.2 mg/kg. The general trend was that, the number of cocoons reduced with increasing concentration across all the formulations of the herbicides.","PeriodicalId":15885,"journal":{"name":"Journal of Fundamental and Applied Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48203935","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
Phenol biodegradation and optimisation of cultural and physical conditions by the free cells of newly isolated phenol degrading Alcaligenes sp. AQ5-02 新分离的苯酚降解产碱杆菌AQ5-02的游离细胞对苯酚的生物降解及培养和物理条件的优化
Journal of Fundamental and Applied Sciences Pub Date : 2021-08-13 DOI: 10.4314/JFAS.V13I3.13
Abubakar Aisami, S. Ahmad, N. A. Yasid, W. Johari, M. Shukor
{"title":"Phenol biodegradation and optimisation of cultural and physical conditions by the free cells of newly isolated phenol degrading Alcaligenes sp. AQ5-02","authors":"Abubakar Aisami, S. Ahmad, N. A. Yasid, W. Johari, M. Shukor","doi":"10.4314/JFAS.V13I3.13","DOIUrl":"https://doi.org/10.4314/JFAS.V13I3.13","url":null,"abstract":"Biological treatment is understood to be the most efficient technique for phenol removal paralleled to other physio-chemical methods. 16s rRNA sequencing for the identification. Mineral salt media with 0.5 g/L phenol as the only carbon source. Temperature, pH, salinity and nitrogen source were optimised. The effects of heavy metals on the percentage of phenol degradation with were tested. Accession number of KT693288was assigned after identification. Temperature of 25-35°C,pH 7-8 phosphate buffer were the optimum and ammonium sulphate was established to be the paramount nitrogen source at 0.4 –0.5 g/L for isolate. The optimised conditions were found reducing the incubation period to 48 h with the ability to tolerate up to 0.2 g/L sodium chloride and degraded 50% and 1.1 g/L phenol. Meanwhile, the isolate AQ5-02 can also effectively degrade1000g/L phenol in the presence of heavy metals such as Cr, Zn, and Fe.","PeriodicalId":15885,"journal":{"name":"Journal of Fundamental and Applied Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45547697","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
Application of raw peach stones for hexavalent chromium removal from aqueous solution using column system 桃核原料柱法去除水溶液中六价铬的应用
Journal of Fundamental and Applied Sciences Pub Date : 2021-08-13 DOI: 10.4314/JFAS.V13I3.4
F. Khemmari, K. Benrachedi
{"title":"Application of raw peach stones for hexavalent chromium removal from aqueous solution using column system","authors":"F. Khemmari, K. Benrachedi","doi":"10.4314/JFAS.V13I3.4","DOIUrl":"https://doi.org/10.4314/JFAS.V13I3.4","url":null,"abstract":"Raw biosorbent waste is a cheap and environmentally friendly material that provides good cost-benefit for the industries that use it. The objective of this study is to improve the feasibility of raw local peach stones (RPS) waste for the removal of hexavalent chromium from aqueous solution using column system. The characterization of the adsorbent (RPS) was done by using Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The impact of various parameters such as flow rate (1.5,3 and 5 ml/min) and height bed (1,2 and 3 cm) on Cr(VI) adsorption onto RPS were investigated. Two models were proposed to illustrate column breakthrough curve obtained at different flow rates and bed heights. The obtained experimental results showed a better adsorption efficiency at a low flow rate (1.5 ml/min) and a bed height of 3cm. Thus this work provides the high potential of raw peach stones (RPS) for the removal of Cr(VI) ions from aqueous solution.","PeriodicalId":15885,"journal":{"name":"Journal of Fundamental and Applied Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43328498","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
Error estimation for Differential Transform Method (DTM)solution of non-linear SIQRM biological model 微分变换法求解非线性SIQRM生物模型的误差估计
Journal of Fundamental and Applied Sciences Pub Date : 2021-08-13 DOI: 10.4314/JFAS.V13I3.12
O. Odetunde
{"title":"Error estimation for Differential Transform Method (DTM)solution of non-linear SIQRM biological model","authors":"O. Odetunde","doi":"10.4314/JFAS.V13I3.12","DOIUrl":"https://doi.org/10.4314/JFAS.V13I3.12","url":null,"abstract":"Solving a non-linear differential equation most times is difficult and requires some technicalities. Many semi-analytical methods were derived in literature to provide series solution to non-linear problem, with each method giving some level of accuracy when compared with their equivalent exact solution (or numerical solution in case exact does not exist). Thus, system of ordinary differential equations (ODEs) arising from a formulated Susceptible-Infected-Quarantine-Recovered-Immunity (SIQRM) mathematical model of a disease dynamics were solved using DTM and Pade approximation; and their results numerically compared with Runge-Kutta order 4 (RK4). The table of result shows that DTM is reliable to tackle non-linear DE while Pade approximant improves its (DTM) accuracy.","PeriodicalId":15885,"journal":{"name":"Journal of Fundamental and Applied Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49444926","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
3-d modelling of electrical parameters’ effects on the heating of the base of an intense light illuminated polycrystalline silicon PV cell 电参数对强光照射多晶硅光伏电池基底加热影响的三维建模
Journal of Fundamental and Applied Sciences Pub Date : 2021-08-13 DOI: 10.4314/JFAS.V13I3.15
B. Soro, M. Savadogo, B. Zouma, K. E. Tchedre, I. Sourabié, I. Zerbo, M. Zoungrana, D. Bathiébo
{"title":"3-d modelling of electrical parameters’ effects on the heating of the base of an intense light illuminated polycrystalline silicon PV cell","authors":"B. Soro, M. Savadogo, B. Zouma, K. E. Tchedre, I. Sourabié, I. Zerbo, M. Zoungrana, D. Bathiébo","doi":"10.4314/JFAS.V13I3.15","DOIUrl":"https://doi.org/10.4314/JFAS.V13I3.15","url":null,"abstract":"Performances of a solar cell are significantly influenced by the heating of the base. Two phenomena contribute to the heating of the base of a PV cell: the heat due to the transfer by conduction of the solar energy radiation received by the surface of the PV cell and the heat generated inside the solar cell by various phenomena related to the movement of photogenerated electrons and holes. \u0000Thus, even if the increase of the quantity of carriers leads to improve the PV cell electrical parameters, this phenomenon also leads to the increase of some internal phenomena like thermalization, carriers braking and the carriers collisions which are sources of heating of the base of the solar cell \u0000Indeed, electrical parameters (photocurrent, photovoltage, electric power) are physical quantities related to the movement of charge carriers and also to the illumination mode, this means that changing of electrical parameters during the operation of the PV cell leads to a variation of the temperature inside the base of the PV cell. \u0000This work presents the effects of the increase of some electrical parameters (photocurrent, photovoltage, electric power) on the behaviour of the temperature of the base of a silicon PV cell under intense light illumination.","PeriodicalId":15885,"journal":{"name":"Journal of Fundamental and Applied Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45229744","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
Response of durum wheat (Triticum aestivum L.) to foliar application of micronutrients in salted and calcareous soil 盐碱化和钙化土壤中硬粒小麦对叶面施用微量元素的响应
Journal of Fundamental and Applied Sciences Pub Date : 2021-07-30 DOI: 10.4314/JFAS.V13I3.10
B. Miloudi, A. Masmoudi, M. Masmoudi
{"title":"Response of durum wheat (Triticum aestivum L.) to foliar application of micronutrients in salted and calcareous soil","authors":"B. Miloudi, A. Masmoudi, M. Masmoudi","doi":"10.4314/JFAS.V13I3.10","DOIUrl":"https://doi.org/10.4314/JFAS.V13I3.10","url":null,"abstract":"The alkaline nature of arid regions soil usually posses a reduction in solubility and assimilability of micronutrient in soil. A study has been carried out to focus-on the effect of foliar spraying of micronutrients (Fe, Zn, Cu, Mn, Mo) on wheat cultivation-in a saline and calcareous soil. The studied growth parameters are: stem length, yield, weight of1000 seeds and weight of dry matter. According to ANOVA at 5% the following results were obtained: the Zn + Cu 87.67cm, Cu + Mn 83.63cm, Fe + Zn + Cu + Mo 83.53cm treatments exerted the best lengths in succession. For dry matter, the best treatments reported are Zn + Cu + Mo 12396.00Kg/ha, Fe + Mn + Mo  11614.67Kg/ha and Fe + Zn + Cu + Mn11415.67Kg/ha. The results of the weight of 1000 seeds are arranged as follows: Cu + Mo 44.62g was the greatest followed by, Zn + Mo 42.97g, and then by Zn + Cu + Mn + Mo 42.85g. The top ranked treatments in the yield parameter are Fe + Mo 3480.00 Kg/ha, followed by Fe + Zn + Cu + Mn 3451.00 Kg/ha, and then Mn + Mo 3442.20 Kg/ha.","PeriodicalId":15885,"journal":{"name":"Journal of Fundamental and Applied Sciences","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70540794","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
Detecting breast cancer through blood analysis using decision tree (J48) classification algorithm 基于决策树（J48）分类算法的血液分析检测癌症
Journal of Fundamental and Applied Sciences Pub Date : 2021-07-29 DOI: 10.4314/JFAS.V13I3.8
Oladosu Oyebisi Oladimeji, A. Oladimeji
{"title":"Detecting breast cancer through blood analysis using decision tree (J48) classification algorithm","authors":"Oladosu Oyebisi Oladimeji, A. Oladimeji","doi":"10.4314/JFAS.V13I3.8","DOIUrl":"https://doi.org/10.4314/JFAS.V13I3.8","url":null,"abstract":"Breast cancer is the second major cause of death in the world. Breast cancer accounts for 16% of all cancer deaths worldwide. Most of the methods of detecting breast cancer very expensive and difficult such as mammography. The objective of this research paper is detecting breast cancer through blood analysis using J48 algorithm which will serve as alternative to these expensive methods. \u0000The J48 algorithm was used to classify 116 instances also,10-fold cross validation and holdout procedure were used coupled changing of random seed. Average accuracies of 84.65% and 89.99% were acquired for cross validation and holdout procedure. Although it was also discovered that Blood Glucose level is a major determinant in detecting breast cancer, it has to be combined with other attributes to make decision as a result of other health issues such as diabetes.","PeriodicalId":15885,"journal":{"name":"Journal of Fundamental and Applied Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45979274","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
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