Pub Date : 2020-12-27DOI: 10.22453/LSJ-021.2.146-155
K. Ileke, M. Olaoye, Isaac Omotayo Olabimi
The house fly, Musca domestica, is a significant pest of Man and his livestock mainly because of its disease vectoring capacities and the fact that it constitutes a serious nuisance. Several cultural chemical and biological measures have been used to reduce house fly populations. Despite the fact of the known hazards this insect can pose, there are certain benefits man can gain through the utilization of this insect. Utilization of house fly can serve as an alternate protein source for livestock, a possible forensic indicator and can be implemented in the wastes management that has organic origins. However, to achieve the full utility of these flies, several challenges have to be surmounted.
{"title":"Beneficial Utilization of House fly, Musca domestica [Diptera: Muscidae]","authors":"K. Ileke, M. Olaoye, Isaac Omotayo Olabimi","doi":"10.22453/LSJ-021.2.146-155","DOIUrl":"https://doi.org/10.22453/LSJ-021.2.146-155","url":null,"abstract":"The house fly, Musca domestica, is a significant pest of Man and his livestock mainly because of its disease vectoring capacities and the fact that it constitutes a serious nuisance. Several cultural chemical and biological measures have been used to reduce house fly populations. Despite the fact of the known hazards this insect can pose, there are certain benefits man can gain through the utilization of this insect. Utilization of house fly can serve as an alternate protein source for livestock, a possible forensic indicator and can be implemented in the wastes management that has organic origins. However, to achieve the full utility of these flies, several challenges have to be surmounted.","PeriodicalId":31081,"journal":{"name":"Lebanese Science Journal","volume":"21 1","pages":"146-155"},"PeriodicalIF":0.0,"publicationDate":"2020-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47060772","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 : 2020-06-28DOI: 10.22453/lsj-022.1.127-147
Ayman Halawi, Nasri Messarra, Raymond Bou Nader
Written discourse in WhatsApp discussions has been addressed in several articles in Computer-Mediated Communication (CMC). The aim of this study is to determine Lebanese universities students’ choice between Arabic and Latin keyboards while typing their online messages in WhatsApp groups and try to determine variables that affect their keyboards’ choices. We joined 33 WhatsApp discussion groups from 7 major Lebanese universities and gathered 227,059 messages written by 1,112 multilingual students. The results showed that even though Arabic keyboard is not very popular amongst some Lebanese universities’ students, it is still present in WhatsApp groups’ discussions of students especially at some faculties of the official Lebanese University where courses are taught in Arabic language. The results showed also that Arabic is widely typed in Arabizi using a Latin keyboard. This seems to be the case in the majority of universities that took part in the study. In addition, students at universities with high tuition fees and those who are having their curriculum in foreign languages use Latin keyboard more than students at some faculties of the public university.
{"title":"Arabic and Latin keyboard Choice in Lebanese Students’ Discussions on WhatsApp.","authors":"Ayman Halawi, Nasri Messarra, Raymond Bou Nader","doi":"10.22453/lsj-022.1.127-147","DOIUrl":"https://doi.org/10.22453/lsj-022.1.127-147","url":null,"abstract":"Written discourse in WhatsApp discussions has been addressed in several articles in Computer-Mediated Communication (CMC). The aim of this study is to determine Lebanese universities students’ choice between Arabic and Latin keyboards while typing their online messages in WhatsApp groups and try to determine variables that affect their keyboards’ choices. We joined 33 WhatsApp discussion groups from 7 major Lebanese universities and gathered 227,059 messages written by 1,112 multilingual students. The results showed that even though Arabic keyboard is not very popular amongst some Lebanese universities’ students, it is still present in WhatsApp groups’ discussions of students especially at some faculties of the official Lebanese University where courses are taught in Arabic language. The results showed also that Arabic is widely typed in Arabizi using a Latin keyboard. This seems to be the case in the majority of universities that took part in the study. In addition, students at universities with high tuition fees and those who are having their curriculum in foreign languages use Latin keyboard more than students at some faculties of the public university.","PeriodicalId":31081,"journal":{"name":"Lebanese Science Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47101360","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 : 2020-06-28DOI: 10.22453/lsj-022.1.001-021
Abdellah Siboukeur, Abdelhafid Sebihi, A. Senoussi, S. Babahani
The region of Ouargla, located in the south-east of Algeria, is one of the main dateproducing areas. Date palm is a source for and various products. It produces, every year, dates that are, traditionally, considered as a basic food for the local community as well as a commercial product. This phoenicicole biomass is also used for different purposes (building, heating, fodder, cooking, agriculture, therapy and cosmetics). This study aims to value the products of oasis land, through date palms products, and to endeavor to highlight the economic importance of these products and their uses in order to consider strategies for developing this patrimony. Nine sites are retained for investigation. They represent localities which are notorious for having kept, so far, knowledge and know-how in the use of dates as well as other organs of the date palm, and where these products are likely integrated in the socio-economic life of their populations. The aim is to determine the raw material of production, the uses of the date palm organs, dates’ fields of usage and the importance of the products derived from the phoenicicol mass in the commercial environment. We noticed that the organs of the date palm, which are considered as a raw material, are available in a considerable tonnage. An important range of sub-products is derived from the date palm. It is used in basket-making (utensils, cabinetmaking, and garden-work material) and as a livestock aliment with high economic revenue. Besides, these organs (palms, spines, petiole, seeds, sap, pollen…) are used in making medicinal and cosmetic products. All in all, these products are biological and start making their place in modern trade, which might give a new dynamic to the local and national economy.
{"title":"The organs of the date palm: an ecologically clean raw material for human use in the Algerian Sahara.","authors":"Abdellah Siboukeur, Abdelhafid Sebihi, A. Senoussi, S. Babahani","doi":"10.22453/lsj-022.1.001-021","DOIUrl":"https://doi.org/10.22453/lsj-022.1.001-021","url":null,"abstract":"The region of Ouargla, located in the south-east of Algeria, is one of the main dateproducing areas. Date palm is a source for and various products. It produces, every year, dates that are, traditionally, considered as a basic food for the local community as well as a commercial product. This phoenicicole biomass is also used for different purposes (building, heating, fodder, cooking, agriculture, therapy and cosmetics). This study aims to value the products of oasis land, through date palms products, and to endeavor to highlight the economic importance of these products and their uses in order to consider strategies for developing this patrimony. Nine sites are retained for investigation. They represent localities which are notorious for having kept, so far, knowledge and know-how in the use of dates as well as other organs of the date palm, and where these products are likely integrated in the socio-economic life of their populations. The aim is to determine the raw material of production, the uses of the date palm organs, dates’ fields of usage and the importance of the products derived from the phoenicicol mass in the commercial environment. We noticed that the organs of the date palm, which are considered as a raw material, are available in a considerable tonnage. An important range of sub-products is derived from the date palm. It is used in basket-making (utensils, cabinetmaking, and garden-work material) and as a livestock aliment with high economic revenue. Besides, these organs (palms, spines, petiole, seeds, sap, pollen…) are used in making medicinal and cosmetic products. All in all, these products are biological and start making their place in modern trade, which might give a new dynamic to the local and national economy.","PeriodicalId":31081,"journal":{"name":"Lebanese Science Journal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42246501","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 : 2020-06-28DOI: 10.22453/lsj-022.1.082-097
Sharif Jemaa, M. Lteif, G. Khalaf, M. Fakhri
This study highlights for the first time the biodiversity of fish assemblages in purse seine fisheries in the Tripoli region, north of Lebanon. A total of 925 specimens from 17 species of 11 families were identified and studied from the monthly samples collected between April and November 2017. The catch was dominated by 3 families (Clupeidae, Engraulidae and Dussumieriidae) in varying abundances. Seasonal variation of abundance was detected with Sardina pilchardus (32%) in Spring, Engraulis encrasicolus (56%) in Summer and Sardinella maderensis (58%) in Fall. Weight length relationships (W=aLb ) were estimated for the most abundant species, and they show a positive allometry for Engraulis encrasicolus (b=3.276), as well as, Herklotsichthys punctatus (b=3.477), and a negative allometry for Sardinella aurita (b=2.886). Seasonal diversity was evaluated and the highest diversity was observed during the spring season following Shannon Index (H’=1.44), Pielou evenness (J’=0.74) and Simpson Index (1-D=0.74). The Shannon Index differed from one season to another reaching the highest value in Spring. Despite the progress in studying diversity and abundance, variation in pelagic fish catches is evident in Lebanese sea water, where a management plan for purse seine fisheries should be applied under the framework of ecosystem approach to fisheries.
{"title":"The Biodiversity of Pelagic Fish Caught by Purse Seines in Tripoli, northern Lebanese Coast.","authors":"Sharif Jemaa, M. Lteif, G. Khalaf, M. Fakhri","doi":"10.22453/lsj-022.1.082-097","DOIUrl":"https://doi.org/10.22453/lsj-022.1.082-097","url":null,"abstract":"This study highlights for the first time the biodiversity of fish assemblages in purse seine fisheries in the Tripoli region, north of Lebanon. A total of 925 specimens from 17 species of 11 families were identified and studied from the monthly samples collected between April and November 2017. The catch was dominated by 3 families (Clupeidae, Engraulidae and Dussumieriidae) in varying abundances. Seasonal variation of abundance was detected with Sardina pilchardus (32%) in Spring, Engraulis encrasicolus (56%) in Summer and Sardinella maderensis (58%) in Fall. Weight length relationships (W=aLb ) were estimated for the most abundant species, and they show a positive allometry for Engraulis encrasicolus (b=3.276), as well as, Herklotsichthys punctatus (b=3.477), and a negative allometry for Sardinella aurita (b=2.886). Seasonal diversity was evaluated and the highest diversity was observed during the spring season following Shannon Index (H’=1.44), Pielou evenness (J’=0.74) and Simpson Index (1-D=0.74). The Shannon Index differed from one season to another reaching the highest value in Spring. Despite the progress in studying diversity and abundance, variation in pelagic fish catches is evident in Lebanese sea water, where a management plan for purse seine fisheries should be applied under the framework of ecosystem approach to fisheries.","PeriodicalId":31081,"journal":{"name":"Lebanese Science Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47183404","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}
Decomposition of carbon steel via corrosion process has caused a serious damage to several organisations worldwide. Despite efforts put in place to curb this menace by scientists, havoc caused by corrosion of metal still remain. Therefore, in a way to find effective corrosion inhibitor, (Z)-N'-(1-phenylethylidene) benzohydrazide derivatives was optimised using density functional theory and the obtained molecular descriptors correlated well with the experimental percentage inhibition efficiency. Also, the developed quantitative structure-activity relationship study (QSAR) model revealed that dipole moment impeccably define anti-corrosion properties of (Z)-N'-(1-phenylethylidene) benzohydrazide Derivatives.
{"title":"Corrosion Inhibition Study on (Z)-N’-(1-phenylethylidene) benzohydrazide Derivatives on Carbon Steel in Acidic Solutions.","authors":"Oyebamiji Abel Kolawole, Adeleke David Kehinde, Akande Ismail Olawale, Ajayi Ayomide Peter, Oladosu Ibraheem Ayobami, Ojeniyi Festus Akintunde, Oyebamiji Esther Opeyemi, Akintelu Sunday Adewale, Semire Banjo","doi":"10.22453/lsj-022.1.098-111","DOIUrl":"https://doi.org/10.22453/lsj-022.1.098-111","url":null,"abstract":"Decomposition of carbon steel via corrosion process has caused a serious damage to several organisations worldwide. Despite efforts put in place to curb this menace by scientists, havoc caused by corrosion of metal still remain. Therefore, in a way to find effective corrosion inhibitor, (Z)-N'-(1-phenylethylidene) benzohydrazide derivatives was optimised using density functional theory and the obtained molecular descriptors correlated well with the experimental percentage inhibition efficiency. Also, the developed quantitative structure-activity relationship study (QSAR) model revealed that dipole moment impeccably define anti-corrosion properties of (Z)-N'-(1-phenylethylidene) benzohydrazide Derivatives.","PeriodicalId":31081,"journal":{"name":"Lebanese Science Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47246424","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 : 2020-06-28DOI: 10.22453/lsj-022.1.022-037
Atefeh Sayadi Shahraki, S. Broomandnasab, Abd Ali Naseri, Amir Soltani Mohammadi
Using an appropriate monitoring network is considered as an efficient option to manage the groundwater resources and reduce drilling of costly sampling wells. Principal component analysis (PCA) is one of the data reduction techniques used to extract essential components. The used techniques are based on the identification of those describing the variance of the system. In this paper, the PCA technique has been employed in order to identify the effective wells and remove the less important ones. For this purpose, 160 wells were constructed in the Salman Farsi Agro-Industry, located in Khuzestan province of Iran. The data are measured twice a month for 12 months. In this technique, variation factors called principal components are identified through considering the data structures. Using the PCA, the relative importance of each well has been calculated for the groundwater depth estimation. In the present study, the acceptable threshold has been taken to be 0.8 and therefore the number of wells in determining groundwater depth was reduced to 33 ones. Identifying the essential wells, the important points for sampling are identified and groundwater depth monitoring is performed only in these wells. This will save time and cost of groundwater level monitoring within the study area.
{"title":"Design of the groundwater level monitoring network using principal component analysis (PCA) technique.","authors":"Atefeh Sayadi Shahraki, S. Broomandnasab, Abd Ali Naseri, Amir Soltani Mohammadi","doi":"10.22453/lsj-022.1.022-037","DOIUrl":"https://doi.org/10.22453/lsj-022.1.022-037","url":null,"abstract":"Using an appropriate monitoring network is considered as an efficient option to manage the groundwater resources and reduce drilling of costly sampling wells. Principal component analysis (PCA) is one of the data reduction techniques used to extract essential components. The used techniques are based on the identification of those describing the variance of the system. In this paper, the PCA technique has been employed in order to identify the effective wells and remove the less important ones. For this purpose, 160 wells were constructed in the Salman Farsi Agro-Industry, located in Khuzestan province of Iran. The data are measured twice a month for 12 months. In this technique, variation factors called principal components are identified through considering the data structures. Using the PCA, the relative importance of each well has been calculated for the groundwater depth estimation. In the present study, the acceptable threshold has been taken to be 0.8 and therefore the number of wells in determining groundwater depth was reduced to 33 ones. Identifying the essential wells, the important points for sampling are identified and groundwater depth monitoring is performed only in these wells. This will save time and cost of groundwater level monitoring within the study area.","PeriodicalId":31081,"journal":{"name":"Lebanese Science Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47407312","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 : 2020-06-28DOI: 10.22453/lsj-022.1.038-067
Houssam Shaiban, C. Khater, J. Fenianos, T. Dutoit
Hydroseeding is a restoration technique commonly used in varied restoration projects. This literature review, encompassing about 100 published research papers from 1990 to 2020, revealed numerous limitations in a semi-arid Mediterranean environment. Challenges facing hydroseeding as a restoration tool in semi-arid Mediterranean environments were evaluated by analyzing different factors affecting ecological and technical levels. This issue was approached by sorting variables under either biotic or abiotic factors, further sub-dividing them under either natural-environmental or humaninfluenced factors. The review highlighted several constraints when applying hydroseeding techniques in a semi-arid Mediterranean environment: Slope steepness, slope aspect, high water runoff, low presence of water, mixing solutions used, and high cost for applying this technique are some of those constraints facing its success. Other shortcomings are related to the low success rate of commercial seed mixtures under harsh conditions, and their tendency to compete with native species. Moreover, the review provided recommendations to increase hydroseeding success by using varied techniques such as topsoil spreading, using native seeds, Mycorrhizal, or Rhizobium inoculation, and the use of nurse plants. Furthermore, environmental psychology approach was suggested as means to convey a better message and increase acceptability towards improved innovative suggestions.
{"title":"Hydroseeding for Restoring Degraded Semi-Arid Mediterranean Environments: A Review of Challenges.","authors":"Houssam Shaiban, C. Khater, J. Fenianos, T. Dutoit","doi":"10.22453/lsj-022.1.038-067","DOIUrl":"https://doi.org/10.22453/lsj-022.1.038-067","url":null,"abstract":"Hydroseeding is a restoration technique commonly used in varied restoration projects. This literature review, encompassing about 100 published research papers from 1990 to 2020, revealed numerous limitations in a semi-arid Mediterranean environment. Challenges facing hydroseeding as a restoration tool in semi-arid Mediterranean environments were evaluated by analyzing different factors affecting ecological and technical levels. This issue was approached by sorting variables under either biotic or abiotic factors, further sub-dividing them under either natural-environmental or humaninfluenced factors. The review highlighted several constraints when applying hydroseeding techniques in a semi-arid Mediterranean environment: Slope steepness, slope aspect, high water runoff, low presence of water, mixing solutions used, and high cost for applying this technique are some of those constraints facing its success. Other shortcomings are related to the low success rate of commercial seed mixtures under harsh conditions, and their tendency to compete with native species. Moreover, the review provided recommendations to increase hydroseeding success by using varied techniques such as topsoil spreading, using native seeds, Mycorrhizal, or Rhizobium inoculation, and the use of nurse plants. Furthermore, environmental psychology approach was suggested as means to convey a better message and increase acceptability towards improved innovative suggestions.","PeriodicalId":31081,"journal":{"name":"Lebanese Science Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44999981","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 : 2020-06-28DOI: 10.22453/lsj-022.1.068-081
L. Ibrahim, Nour Ezzeddine, Said Kamel Ibrahim
Tuta absoluta is a leaf miner pest devastating tomato production. Use of broadspectrum pesticides to control this pest leads to the development of insecticide resistance, food contamination, poor health and environmental pollution. Recent knowledge of entomopathogenic fungi colonizing plants and, thus, antagonizing insect pests and plant diseases, sparked appreciable enthusiasm in using these capabilities. Therefore, this study aimed to assess the abilities of entomopathogens to endophytically colonize tomato plants, and to determine the ability of fungal species to modulate the behavior of T. absoluta. The two inoculation procedures (seed treatment and direct injection) allowed Metarhizium anisopliae and Beauveria bassiana strains to endophytically colonize tomato plants and thus have influenced the preference of T. absoluta oviposition. In Beauveria- and Metarhizium-colonized leaf mesophyll, damage by T. absoluta was significantly lower compared to control plants. This was attributed to the reduced number of eggs (7-8 plant-1 ) on fungus-colonized plants as opposed to 19 plant-1 on control plants in seed-treated assay. Reduced size of mines in Beauveria-injected plants has also contributed to the decrease in damage area by leaf miner larvae. The outcomes of this study suggest that seed inoculation is an effective method to be adopted by plant nurseries for commercial production of pre-colonised with entomopathogenic endophytes tomato plantlets.
{"title":"Response of Tuta absoluta to endophytic fungal entomopathogens in tomato.","authors":"L. Ibrahim, Nour Ezzeddine, Said Kamel Ibrahim","doi":"10.22453/lsj-022.1.068-081","DOIUrl":"https://doi.org/10.22453/lsj-022.1.068-081","url":null,"abstract":"Tuta absoluta is a leaf miner pest devastating tomato production. Use of broadspectrum pesticides to control this pest leads to the development of insecticide resistance, food contamination, poor health and environmental pollution. Recent knowledge of entomopathogenic fungi colonizing plants and, thus, antagonizing insect pests and plant diseases, sparked appreciable enthusiasm in using these capabilities. Therefore, this study aimed to assess the abilities of entomopathogens to endophytically colonize tomato plants, and to determine the ability of fungal species to modulate the behavior of T. absoluta. The two inoculation procedures (seed treatment and direct injection) allowed Metarhizium anisopliae and Beauveria bassiana strains to endophytically colonize tomato plants and thus have influenced the preference of T. absoluta oviposition. In Beauveria- and Metarhizium-colonized leaf mesophyll, damage by T. absoluta was significantly lower compared to control plants. This was attributed to the reduced number of eggs (7-8 plant-1 ) on fungus-colonized plants as opposed to 19 plant-1 on control plants in seed-treated assay. Reduced size of mines in Beauveria-injected plants has also contributed to the decrease in damage area by leaf miner larvae. The outcomes of this study suggest that seed inoculation is an effective method to be adopted by plant nurseries for commercial production of pre-colonised with entomopathogenic endophytes tomato plantlets.","PeriodicalId":31081,"journal":{"name":"Lebanese Science Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42306100","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 : 2020-06-28DOI: 10.22453/lsj-022.1.112-126
Samir Belmahi, Zidour Mohamed, Haddi Abdelkader
The purpose of this work is to find out the possibility of valorizing the green foundry sand from the foundry of EPE-ALFE, Tiaret, Algeria in construction. Mortars which are based on this sand were made and their mechanical behavior was evaluated. The first results showed that the strengths of these mortars represent approximately 74% to 80% of the resistance of the control mortar based on quarry sand from Guelta, Algeria, so, the mixture of 30 to 50% of quarry sand with the Foundry green molding sand increases this interval and gives an ordinary mortar with compressive strengths varying between 25 and 30 MPa which allows an extended use of this sand meeting the 206.1 standard of concrete. This solution represents an economic choice in construction which makes it possible to recycle around 50% of the quantity of foundry sand for any concrete production and it will help with the elimination of waste and the rapid release of storage areas at the level of foundries as well meet the requirements of the quality assurance plan.
{"title":"Valuation of foundry sand in the construction sector.","authors":"Samir Belmahi, Zidour Mohamed, Haddi Abdelkader","doi":"10.22453/lsj-022.1.112-126","DOIUrl":"https://doi.org/10.22453/lsj-022.1.112-126","url":null,"abstract":"The purpose of this work is to find out the possibility of valorizing the green foundry sand from the foundry of EPE-ALFE, Tiaret, Algeria in construction. Mortars which are based on this sand were made and their mechanical behavior was evaluated. The first results showed that the strengths of these mortars represent approximately 74% to 80% of the resistance of the control mortar based on quarry sand from Guelta, Algeria, so, the mixture of 30 to 50% of quarry sand with the Foundry green molding sand increases this interval and gives an ordinary mortar with compressive strengths varying between 25 and 30 MPa which allows an extended use of this sand meeting the 206.1 standard of concrete. This solution represents an economic choice in construction which makes it possible to recycle around 50% of the quantity of foundry sand for any concrete production and it will help with the elimination of waste and the rapid release of storage areas at the level of foundries as well meet the requirements of the quality assurance plan.","PeriodicalId":31081,"journal":{"name":"Lebanese Science Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48412489","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 : 2020-06-27DOI: 10.22453/LSJ-021.1.080-094
Bahaz Hanane, H. Abdelkader, Moulai Kromia, A. Salah
The aim of this paperis the synthesis of a Faujasite type zeolite: 9SiO2: Al2O3: 3Na2O: 120H2O and study its ability to remove heavy metals from an industrial effluent.Characterization of the zeolite was carried out by X-ray diffraction analysis (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM).The study of the elimination of ten heavy metalson anaqueous effluent, taken from the industrial zone of Bounoua(Algeria),showsthat the synthesized zeolite is able to eliminate nearly 40% of the analyzed heavy metals. the results demonstrate a removal rates of metals in a descreasing order, as following: Cd > Mn > Sn > Fe > Cr > Ni > Pb > Mg > Zn > Cu.Cadmium is the most adsorbed metal with a rate of86.47 % and copper takes the last position with a removal rate of19.27 %.The kinetics and isotherms study of adsorbtion of cadmiumby zeoliteshows that the adsorption is managed by kinetics of the pseudo-second order and the Langmuir isotherm represents better the adsorption of this metal.The study demonstrates that, besides the economy, zeolite facilitates the process of adsorbtion. Moreover, the zeolite is very efficient and reliable material to eliminate the heavy metals and to mitigate the problems of pollution of the environment causedby the industrial activities.
{"title":"Removal of heavy metals from an industrial effluent by synthesized zeolite: Case of Bounoura industrial zone","authors":"Bahaz Hanane, H. Abdelkader, Moulai Kromia, A. Salah","doi":"10.22453/LSJ-021.1.080-094","DOIUrl":"https://doi.org/10.22453/LSJ-021.1.080-094","url":null,"abstract":"The aim of this paperis the synthesis of a Faujasite type zeolite: 9SiO2: Al2O3: 3Na2O: 120H2O and study its ability to remove heavy metals from an industrial effluent.Characterization of the zeolite was carried out by X-ray diffraction analysis (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM).The study of the elimination of ten heavy metalson anaqueous effluent, taken from the industrial zone of Bounoua(Algeria),showsthat the synthesized zeolite is able to eliminate nearly 40% of the analyzed heavy metals. the results demonstrate a removal rates of metals in a descreasing order, as following: Cd > Mn > Sn > Fe > Cr > Ni > Pb > Mg > Zn > Cu.Cadmium is the most adsorbed metal with a rate of86.47 % and copper takes the last position with a removal rate of19.27 %.The kinetics and isotherms study of adsorbtion of cadmiumby zeoliteshows that the adsorption is managed by kinetics of the pseudo-second order and the Langmuir isotherm represents better the adsorption of this metal.The study demonstrates that, besides the economy, zeolite facilitates the process of adsorbtion. Moreover, the zeolite is very efficient and reliable material to eliminate the heavy metals and to mitigate the problems of pollution of the environment causedby the industrial activities.","PeriodicalId":31081,"journal":{"name":"Lebanese Science Journal","volume":"21 1","pages":"80-94"},"PeriodicalIF":0.0,"publicationDate":"2020-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45045759","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}
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