International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
This work contributes to the monitoring of water pollution of some selected Dams in Katsina
State, North western Nigeria by assessing the degree of heavy metal pollution in the Dams sediment samples.
The study was conducted in the year 2017 within some selected Dams in the State (Ajiwa, Zobe,
Sabke/Dannakola) that are beehives of fishing and Agricultural activities in Katsina State. Analysis for the
concentration of these heavy metals; Cr, Cd, Fe, Ni, Mn, Pb and Zn was conducted by the use of AAS (by
Atomic Absorption Spectrophotometry) method. Several indices were used to assess the metal contamination
levels in the sediment samples, namely; Geo-accumulation Index (Igeo), Enrichment Factor (EF),
Contamination Factor (CF), Degree of Contamination (Cd), Pollution Load Index (PLI) and Potential
Ecological Risk Index (PERI). The result of this study has shown that generally among the heavy metals
evaluated, the highest concentration was observed for Fe (range: 2.6718-4.2830 ppm), followed by Zn (range:
0.4265-0.7376 ppm), Cr (range: 0.1106-0.1836 ppm), Cd (range: 0.1333-0.1273 ppm) and Mn (range: 0.1136-
0.1271 ppm). While Pb has the lowest concentration (range: 0.0472-0.0598 ppm). For all the site sampled the
heavy metal Ni was below detection level (BDL). From the results of heavy metals I-geo values, according to
Muller’s classification, all the sediment samples from the selected dams were unpolluted (class 0). The result for
the enrichment factor has shown that for all the selected dam sediment samples the heavy metals show
deficiency to minimal enrichment. Also based on the contamination factors for all sediment samples the heavy
metal Cd has a CF values range of 0.5430-0.6665 (~1), indicating that the sediment samples are moderately
contaminated with Cd. In contrast, the rest of the heavy metals exhibit low contamination in general. The value
of PLI ranges from 0.2408 to 0.4935, indicating unpolluted to moderate pollution. The Eri values for all
samples are all < 40, presenting low ecological risk. The results suggest that the sediment samples from the
selected dams in Katsina state has low contamination by the heavy metals evaluated.
Micro organisms living in zinc contaminated soil - a reviewIOSR Journals
Zinc (Zn) has important effect on soil microbes; resultant of its ability to enhance as well as reduce activity depends on its concentration. Heavy metal contamination in soil is affecting animals, human and crop as well. As a result of industrialization for example smelting of metals, mining, electroplating, energy and fuel production, fertilizer, gas exhaust, municipal waste generation sewage and pesticide application, municipal waste generation, etc. Metal pollution is among one of the drastic ecological threats today. In several researches the effects of various solution of Zn on soil microbial communities and activities were analyzed by different concentration of Zn into a surface soil. Research lead to finding that, soil microorganisms is highly sensitive to metal concentration. Metal exerted poisoning impact after high amount was added. Higher concentration resulted slower growth of microbes. Levels of zinc in excess of 500 ppm in soil compete with other essential metals, such as iron and manganese for plant uptake. We can conclude that soil microbial communities and activities can adapt to Zn pollution to a certain extent. The micro organisms can play a substantial job in the remediation of heavy metals and other pollutants.
IOSR Journal of Applied Chemistry (IOSR-JAC) is an open access international journal that provides rapid publication (within a month) of articles in all areas of applied chemistry and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in Chemical Science. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
IOSR Journal of Applied Chemistry (IOSR-JAC) is an open access international journal that provides rapid publication (within a month) of articles in all areas of applied chemistry and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in Chemical Science. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
This work contributes to the monitoring of water pollution of some selected Dams in Katsina
State, North western Nigeria by assessing the degree of heavy metal pollution in the Dams sediment samples.
The study was conducted in the year 2017 within some selected Dams in the State (Ajiwa, Zobe,
Sabke/Dannakola) that are beehives of fishing and Agricultural activities in Katsina State. Analysis for the
concentration of these heavy metals; Cr, Cd, Fe, Ni, Mn, Pb and Zn was conducted by the use of AAS (by
Atomic Absorption Spectrophotometry) method. Several indices were used to assess the metal contamination
levels in the sediment samples, namely; Geo-accumulation Index (Igeo), Enrichment Factor (EF),
Contamination Factor (CF), Degree of Contamination (Cd), Pollution Load Index (PLI) and Potential
Ecological Risk Index (PERI). The result of this study has shown that generally among the heavy metals
evaluated, the highest concentration was observed for Fe (range: 2.6718-4.2830 ppm), followed by Zn (range:
0.4265-0.7376 ppm), Cr (range: 0.1106-0.1836 ppm), Cd (range: 0.1333-0.1273 ppm) and Mn (range: 0.1136-
0.1271 ppm). While Pb has the lowest concentration (range: 0.0472-0.0598 ppm). For all the site sampled the
heavy metal Ni was below detection level (BDL). From the results of heavy metals I-geo values, according to
Muller’s classification, all the sediment samples from the selected dams were unpolluted (class 0). The result for
the enrichment factor has shown that for all the selected dam sediment samples the heavy metals show
deficiency to minimal enrichment. Also based on the contamination factors for all sediment samples the heavy
metal Cd has a CF values range of 0.5430-0.6665 (~1), indicating that the sediment samples are moderately
contaminated with Cd. In contrast, the rest of the heavy metals exhibit low contamination in general. The value
of PLI ranges from 0.2408 to 0.4935, indicating unpolluted to moderate pollution. The Eri values for all
samples are all < 40, presenting low ecological risk. The results suggest that the sediment samples from the
selected dams in Katsina state has low contamination by the heavy metals evaluated.
Micro organisms living in zinc contaminated soil - a reviewIOSR Journals
Zinc (Zn) has important effect on soil microbes; resultant of its ability to enhance as well as reduce activity depends on its concentration. Heavy metal contamination in soil is affecting animals, human and crop as well. As a result of industrialization for example smelting of metals, mining, electroplating, energy and fuel production, fertilizer, gas exhaust, municipal waste generation sewage and pesticide application, municipal waste generation, etc. Metal pollution is among one of the drastic ecological threats today. In several researches the effects of various solution of Zn on soil microbial communities and activities were analyzed by different concentration of Zn into a surface soil. Research lead to finding that, soil microorganisms is highly sensitive to metal concentration. Metal exerted poisoning impact after high amount was added. Higher concentration resulted slower growth of microbes. Levels of zinc in excess of 500 ppm in soil compete with other essential metals, such as iron and manganese for plant uptake. We can conclude that soil microbial communities and activities can adapt to Zn pollution to a certain extent. The micro organisms can play a substantial job in the remediation of heavy metals and other pollutants.
IOSR Journal of Applied Chemistry (IOSR-JAC) is an open access international journal that provides rapid publication (within a month) of articles in all areas of applied chemistry and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in Chemical Science. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
IOSR Journal of Applied Chemistry (IOSR-JAC) is an open access international journal that provides rapid publication (within a month) of articles in all areas of applied chemistry and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in Chemical Science. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
Calculation of Metal Pollution Index and Enrichment Factor in Sodic Soil from...ijtsrd
In the present paper, the sodic soil samples were collected from the salt production area of Thakhauttaw, Hanlin, Sataung Gyi and Paline, Shwebo District, Sagaing Region. These samples were studied on the elemental analysis using the energy dispersive x ray fluorescence EDXRF spectroscopy. In order to evaluate the contamination status of metals, assessment indices such as metal pollution index MPI and enrichment factors EFs have been calculated by using the metal concentrations from the EDXRF results. The values of metal pollution index MPI for all samples were less than 1. This indicating the sodic soil was no significant of metal pollution. The results of enrichment factors show that Ca and Mn considerable enriched levels in the soil. According to health physics point of view, the overall study suggests that the sodic soil from salt production area were not metal contaminated and long term consumption cannot be cause potential health risks to consumers. Tin Htun Naing | Kyaw Kyaw Naing | Hla Win Aung | Wunna Ko | Khin Maung Htwe "Calculation of Metal Pollution Index and Enrichment Factor in Sodic Soil from Salt Production Area" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-5 , August 2019, URL: https://www.ijtsrd.com/papers/ijtsrd26771.pdf Paper URL: https://www.ijtsrd.com/physics/other/26771/calculation-of-metal-pollution-index-and-enrichment-factor-in-sodic-soil-from-salt-production-area/tin-htun-naing
Phytochemical and Heavy Metal Analysis of Gongronema Latifolium, Talinum Tri...Scientific Review SR
Heavy metals contamination of soil has continued to increase globally as a result of increase in anthropogenic
actions. The phytochemical and heavy metals (Zn, Cu, As, Pb, Cd, Hg) content of three edible plant species grown in
southern Nigeria and the health implications were evaluated. The heavy metal concentrations of Gongronema
latifolium, Talinum triangulare and Amaranthus hybridus as well as the top soil were determined using Atomic
Absorption Spectrophotometer. The consumption of vegetables is a very vital path to food chain by which toxic
metals are transferred from the soil to human as well as other animals. Geo-accumulation index and Transfer factor
were the parameters used to evaluate the extent of contamination of top soil and exposure by human via the food
chain respectively. The results of phytochemical analysis of plants revealed the existence of some bioactive
constituents and their corresponding concentrations are presented in increasing order of magnitude: anthocyanin˂
carotenoid ˂ flavonoid ˂ tannin ˂ steroid ˂ alkaloid. The soil analysis for heavy metals were performed and results
demonstrated that zinc had the maximum concentration (103.1 – 174.0 mg kg-1) while mercury had the lowest levels
(0.01 – 0.20 mg kg-1). The heavy metal concentrations in the soil samples are in the order; Zn ˃ Pb ˃ Cu ˃ Cd ˃ Ni
˃ As ˃ Hg. Geo-accumulation index analysis revealed that Pb and Cd were implicated in overall contamination of
the soil samples but the control soil remained uncontaminated. The concentratio ns of heavy metal in the plant
samples varied greatly with Zn having the maximum values (10.80 – 21.10 mg kg -1) whereas arsenic had the
minimum concentration (0.01 – 0.03 mg kg -1). The heavy metal concentration in the plant samples are in the order;
Zn ˃ Cu ˃ Pb ˃ Cd ˃ Ni ˃ Hg ˃ As. The concentrations of heavy metals in the selected plant samples evaluated were
within the recommended standard limits apart for lead which was higher than the recommended value. Results
revealed moderately high transfer factors and capacity of the vegetables investigated to accumulate copper, mercury
and arsenic.
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
Heavy Metals in Irrigated Crops along Tatsawarki River in Kano, NigeriaIJMER
International Journal of Modern Engineering Research (IJMER) is Peer reviewed, online Journal. It serves as an international archival forum of scholarly research related to engineering and science education.
International Journal of Modern Engineering Research (IJMER) covers all the fields of engineering and science: Electrical Engineering, Mechanical Engineering, Civil Engineering, Chemical Engineering, Computer Engineering, Agricultural Engineering, Aerospace Engineering, Thermodynamics, Structural Engineering, Control Engineering, Robotics, Mechatronics, Fluid Mechanics, Nanotechnology, Simulators, Web-based Learning, Remote Laboratories, Engineering Design Methods, Education Research, Students' Satisfaction and Motivation, Global Projects, and Assessment…. And many more.
Detection of the Presence of Heavy Metal Pollutants in Eleme Industrial Area ...theijes
The presenceof some heavy metal pollutants which are deposited on soil in the Eleme environment due to the operational activities of some companies in the area have been studied. Some soil samples in areas situated around industrial installations were collected and analyzed using Atomic Absorption Spectrophotometer (AAS). Results obtained show the presence and concentration distributions of nine heavy metals. The metals are Iron (Fe), Manganese (Mn), Zinc (Zn), Lead (Pb), Copper (Cu), Chromium (Cr), Cobalt (Co) and Cadmium (Cd). It was observed that over 90% of each of the metals was located in communities hosting the industrial corporations while the remaining 10% is distributed to areas away from the source or host communities. This reveals that, a link exists between the pollutants and the activities of these industries.
Removal of heavy metals (Cr, Cd, Ni and Pb) using fresh water algae (Utricula...Innspub Net
A study was conducted to check the efficiency of different fresh water algae for removing heavy metals (Cr, Cd, Ni and Pb) from contaminated water. The three most abundant indigenous algal species namely Ulothrix tenuissima, Oscillatoria tenuis and Zygogonium ericetorum were collected from fresh water channels of Parachinar, Pakistan and brought to the laboratory of Soil and Environmental Sciences Department at the University of Agriculture, Peshawar Pakistan for proper identification. To check the efficiency for removing heavy metals artificial contaminated water was prepared and was inoculated with mix culture of above mentioned algae and incubated for 10 days. After incubation algal species were removed from water through centrifugation and was dried, digested and analyzed for heavy metals. The results showed that the concentration of all heavy metals was substantially reduced in the algal inoculated contaminated water. The analysis of algal biomass showed that considerable amount of metals and other elements were recovered in algae. Among the tested algal species, Zygogonium ericetorum showed maximum removal Ni(99.40ug) and Cr(66.84ug) from contaminated water followed by Oscillatoria tenuis with 84ug(Ni) and 64.83ug(Cr) respectively. However Oscillatoria tenuis showed maximum removal of Cd(41.00ug) than the other algal species. Similarly Zygogonium ericetorum showed maximum removal of Pb (451ug) followed by Ulothrix tenuissima where 441ug was recorded. Highest amount Cd, and Ni were recovered in Zygogonium ericetorum biomass while highest amount of Cr and Pb were recorded in the biomass of Oscillatoria tenuis. Finally it could be concluded that algae have efficiently removed heavy metals from contaminated water. Further research is needed to test other algal species for removal of heavy metal and other elements from the contaminated water.
The Influence of Soil Organic Matter on the Uptake of Silver Nanoparticles in...Agriculture Journal IJOEAR
— The uptake of silver from silver nanoparticles in soil was investigated in the presence of increasing concentrations of soil organic matter. Especially, the effect of Humus component of soil organic matter on the uptake of Ag from silver nanoparticles was studied. Two insect species, Acheta domesticus and Tenebrio molitor, and two plant species, Helianthus annuus and Sorghum vulgare, were exposed to silver nanoparticles(25 ppm in the presence of increasing concentrations of Humus (0, 1, 5, 10, 15, and 20% Humus) in soil (by weight). The techniques of transmission electron microscopy, dynamic light scattering, and powder X-ray diffraction were used to characterize the silver nanoparticles used in the study. An inductively coupled plasma-optical emission spectrometer was used to measure the levels of silver in test samples. Increasing concentrations of Humus in soil has resulted in an increase in the sulfur content and cation exchange capacity of the soil. A general decrease in the concentrations of silver was observed in Acheta domesticus and both the plant species, as a function of increasing concentrations of Humus in soil. In the case of plant species, the accumulation of silver nanoparticles was predominantly observed in the root tissue. Additionally, the translocation of silver from the roots to other plant tissues was observed in the case of Helianthus annuus. Results from this study suggest that the presence of Humus in soil could possibly decrease the uptake of silver from silver nanoparticles by insect and plant species.
Health risk assessment of consuming heavy metal contaminated benthic seafood,...Premier Publishers
This study evaluated health risks associated with the consumption of a seafood (bivalve - Anadara (Senilia) senilis) contaminated with some heavy metals in southern Nigeria. Atomic absorption spectrophotometry was used for metal analysis. Mean metal concentrations (µgg-1) was in the order of Zn(12.96±1.0)> Pb(4.69±0.6)> Cr(2.91±0.7)> Ni(2.47±0.2)> Cu(2.03±0.3)> Cd(1.68±0.2). Mean concentrations of Cr, Cu and Zn were below their respective FAO/WHO recommended limits while those of Ni, Cd and Pb exceeded. The Estimated daily intake-EDI values of all metals were less than their respective reference oral doses-RFD implying minimal health risk. The target hazard quotient (non-carcinogenic) and hazard index-HI had values <1suggesting minimal health risk of non-carcinogenic origin but HI value showed potency of increase. The value of Incremental Lifetime Cancer Risk-ILCR ranged from 10-5-10-2 with Ni and Cd within the acceptable range of 10-4-10-6 while Cr and Pb exceeded the limit. The target cancer risk-TR had values of 10-3 indicating moderate to high risk according to the New York State Department of Health classification. The study concluded the presence of moderate to high carcinogenic risk due to Cr and Pb for consumers of heavy metal contaminated seafood (bivalves) in southern Nigeria. Minimal consumption and further action are advised with regular monitoring to detect changes.
ABSTRACT- Aquatic organisms have been considered to concentrate metals several times greater than environmental levels. Fishes have been used for many decades to evaluate the pollution status of water and thus considered as excellent biological indicator of heavy metals in aquatic environments. Heavy metals are natural tress components of the aquatic environment, but their levels have increased due to domestic, industrial, mining and agricultural activities. These heavy metals when accumulated in the fish tissues, they damage and weaken the mechanisms concerned leading to physiological, pathological and biochemical changes. The lead is non essential element while cobalt is an essential element for living organisms but its presence in fresh water in higher concentration are toxic to organism’s brain, liver, ovary, kidney and gills of the fish. The present study was aimed to investigate the changes due to two heavy metals (lead & cobalt) on the activity of the antioxidant enzyme, Catalase (CAT), Reduced glutathione (GSH), and Lipid peroxidation (LPO) in the brain of Danio rerio during 5, 10, 15 and 20 days of exposure period. For this study adult fishes were exposed to four different concentrations viz., 20, 30, 40 and 50 mg/l of cobalt and 5, 9, 13, and 17 mg/l of lead. Key-words- Zebrafish, Lead, Cobalt, Catalase, LPO, Glutathione, Heavy metals
An Analysis and Study in Light of Phytoremediation of Heavy Metal Contaminate...ijtsrd
"The modern movement quickens contamination of the
biosphere, particularly the soil. These days soil
contamination is getting impressive open
consideration since the size of this issue is developing
quickly. Heavy metals are the most hazardous
substances in the earth because of their abnormal state
of toughness and harmfulness to the biota. Various
examinations have been led around there went for
building up an effective and prudent approach to
remediate the soil contaminated with heavy metals.
Regular remediation techniques, for example,
physical, warm and concoction medications are
exceptionally costly. Phytoremediation is a creating
innovation which utilizes plants and their related
organisms for the remediation of soil defilement. This
procedure is practical without making unsettling
influence to the scene. This paper resembles a point of
reference or resource in distinguishing the issues
related with heavy metal contaminated soil and other
term known as Phytoremediation."
Calculation of Metal Pollution Index and Enrichment Factor in Sodic Soil from...ijtsrd
In the present paper, the sodic soil samples were collected from the salt production area of Thakhauttaw, Hanlin, Sataung Gyi and Paline, Shwebo District, Sagaing Region. These samples were studied on the elemental analysis using the energy dispersive x ray fluorescence EDXRF spectroscopy. In order to evaluate the contamination status of metals, assessment indices such as metal pollution index MPI and enrichment factors EFs have been calculated by using the metal concentrations from the EDXRF results. The values of metal pollution index MPI for all samples were less than 1. This indicating the sodic soil was no significant of metal pollution. The results of enrichment factors show that Ca and Mn considerable enriched levels in the soil. According to health physics point of view, the overall study suggests that the sodic soil from salt production area were not metal contaminated and long term consumption cannot be cause potential health risks to consumers. Tin Htun Naing | Kyaw Kyaw Naing | Hla Win Aung | Wunna Ko | Khin Maung Htwe "Calculation of Metal Pollution Index and Enrichment Factor in Sodic Soil from Salt Production Area" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-5 , August 2019, URL: https://www.ijtsrd.com/papers/ijtsrd26771.pdf Paper URL: https://www.ijtsrd.com/physics/other/26771/calculation-of-metal-pollution-index-and-enrichment-factor-in-sodic-soil-from-salt-production-area/tin-htun-naing
Phytochemical and Heavy Metal Analysis of Gongronema Latifolium, Talinum Tri...Scientific Review SR
Heavy metals contamination of soil has continued to increase globally as a result of increase in anthropogenic
actions. The phytochemical and heavy metals (Zn, Cu, As, Pb, Cd, Hg) content of three edible plant species grown in
southern Nigeria and the health implications were evaluated. The heavy metal concentrations of Gongronema
latifolium, Talinum triangulare and Amaranthus hybridus as well as the top soil were determined using Atomic
Absorption Spectrophotometer. The consumption of vegetables is a very vital path to food chain by which toxic
metals are transferred from the soil to human as well as other animals. Geo-accumulation index and Transfer factor
were the parameters used to evaluate the extent of contamination of top soil and exposure by human via the food
chain respectively. The results of phytochemical analysis of plants revealed the existence of some bioactive
constituents and their corresponding concentrations are presented in increasing order of magnitude: anthocyanin˂
carotenoid ˂ flavonoid ˂ tannin ˂ steroid ˂ alkaloid. The soil analysis for heavy metals were performed and results
demonstrated that zinc had the maximum concentration (103.1 – 174.0 mg kg-1) while mercury had the lowest levels
(0.01 – 0.20 mg kg-1). The heavy metal concentrations in the soil samples are in the order; Zn ˃ Pb ˃ Cu ˃ Cd ˃ Ni
˃ As ˃ Hg. Geo-accumulation index analysis revealed that Pb and Cd were implicated in overall contamination of
the soil samples but the control soil remained uncontaminated. The concentratio ns of heavy metal in the plant
samples varied greatly with Zn having the maximum values (10.80 – 21.10 mg kg -1) whereas arsenic had the
minimum concentration (0.01 – 0.03 mg kg -1). The heavy metal concentration in the plant samples are in the order;
Zn ˃ Cu ˃ Pb ˃ Cd ˃ Ni ˃ Hg ˃ As. The concentrations of heavy metals in the selected plant samples evaluated were
within the recommended standard limits apart for lead which was higher than the recommended value. Results
revealed moderately high transfer factors and capacity of the vegetables investigated to accumulate copper, mercury
and arsenic.
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
Heavy Metals in Irrigated Crops along Tatsawarki River in Kano, NigeriaIJMER
International Journal of Modern Engineering Research (IJMER) is Peer reviewed, online Journal. It serves as an international archival forum of scholarly research related to engineering and science education.
International Journal of Modern Engineering Research (IJMER) covers all the fields of engineering and science: Electrical Engineering, Mechanical Engineering, Civil Engineering, Chemical Engineering, Computer Engineering, Agricultural Engineering, Aerospace Engineering, Thermodynamics, Structural Engineering, Control Engineering, Robotics, Mechatronics, Fluid Mechanics, Nanotechnology, Simulators, Web-based Learning, Remote Laboratories, Engineering Design Methods, Education Research, Students' Satisfaction and Motivation, Global Projects, and Assessment…. And many more.
Detection of the Presence of Heavy Metal Pollutants in Eleme Industrial Area ...theijes
The presenceof some heavy metal pollutants which are deposited on soil in the Eleme environment due to the operational activities of some companies in the area have been studied. Some soil samples in areas situated around industrial installations were collected and analyzed using Atomic Absorption Spectrophotometer (AAS). Results obtained show the presence and concentration distributions of nine heavy metals. The metals are Iron (Fe), Manganese (Mn), Zinc (Zn), Lead (Pb), Copper (Cu), Chromium (Cr), Cobalt (Co) and Cadmium (Cd). It was observed that over 90% of each of the metals was located in communities hosting the industrial corporations while the remaining 10% is distributed to areas away from the source or host communities. This reveals that, a link exists between the pollutants and the activities of these industries.
Removal of heavy metals (Cr, Cd, Ni and Pb) using fresh water algae (Utricula...Innspub Net
A study was conducted to check the efficiency of different fresh water algae for removing heavy metals (Cr, Cd, Ni and Pb) from contaminated water. The three most abundant indigenous algal species namely Ulothrix tenuissima, Oscillatoria tenuis and Zygogonium ericetorum were collected from fresh water channels of Parachinar, Pakistan and brought to the laboratory of Soil and Environmental Sciences Department at the University of Agriculture, Peshawar Pakistan for proper identification. To check the efficiency for removing heavy metals artificial contaminated water was prepared and was inoculated with mix culture of above mentioned algae and incubated for 10 days. After incubation algal species were removed from water through centrifugation and was dried, digested and analyzed for heavy metals. The results showed that the concentration of all heavy metals was substantially reduced in the algal inoculated contaminated water. The analysis of algal biomass showed that considerable amount of metals and other elements were recovered in algae. Among the tested algal species, Zygogonium ericetorum showed maximum removal Ni(99.40ug) and Cr(66.84ug) from contaminated water followed by Oscillatoria tenuis with 84ug(Ni) and 64.83ug(Cr) respectively. However Oscillatoria tenuis showed maximum removal of Cd(41.00ug) than the other algal species. Similarly Zygogonium ericetorum showed maximum removal of Pb (451ug) followed by Ulothrix tenuissima where 441ug was recorded. Highest amount Cd, and Ni were recovered in Zygogonium ericetorum biomass while highest amount of Cr and Pb were recorded in the biomass of Oscillatoria tenuis. Finally it could be concluded that algae have efficiently removed heavy metals from contaminated water. Further research is needed to test other algal species for removal of heavy metal and other elements from the contaminated water.
The Influence of Soil Organic Matter on the Uptake of Silver Nanoparticles in...Agriculture Journal IJOEAR
— The uptake of silver from silver nanoparticles in soil was investigated in the presence of increasing concentrations of soil organic matter. Especially, the effect of Humus component of soil organic matter on the uptake of Ag from silver nanoparticles was studied. Two insect species, Acheta domesticus and Tenebrio molitor, and two plant species, Helianthus annuus and Sorghum vulgare, were exposed to silver nanoparticles(25 ppm in the presence of increasing concentrations of Humus (0, 1, 5, 10, 15, and 20% Humus) in soil (by weight). The techniques of transmission electron microscopy, dynamic light scattering, and powder X-ray diffraction were used to characterize the silver nanoparticles used in the study. An inductively coupled plasma-optical emission spectrometer was used to measure the levels of silver in test samples. Increasing concentrations of Humus in soil has resulted in an increase in the sulfur content and cation exchange capacity of the soil. A general decrease in the concentrations of silver was observed in Acheta domesticus and both the plant species, as a function of increasing concentrations of Humus in soil. In the case of plant species, the accumulation of silver nanoparticles was predominantly observed in the root tissue. Additionally, the translocation of silver from the roots to other plant tissues was observed in the case of Helianthus annuus. Results from this study suggest that the presence of Humus in soil could possibly decrease the uptake of silver from silver nanoparticles by insect and plant species.
Health risk assessment of consuming heavy metal contaminated benthic seafood,...Premier Publishers
This study evaluated health risks associated with the consumption of a seafood (bivalve - Anadara (Senilia) senilis) contaminated with some heavy metals in southern Nigeria. Atomic absorption spectrophotometry was used for metal analysis. Mean metal concentrations (µgg-1) was in the order of Zn(12.96±1.0)> Pb(4.69±0.6)> Cr(2.91±0.7)> Ni(2.47±0.2)> Cu(2.03±0.3)> Cd(1.68±0.2). Mean concentrations of Cr, Cu and Zn were below their respective FAO/WHO recommended limits while those of Ni, Cd and Pb exceeded. The Estimated daily intake-EDI values of all metals were less than their respective reference oral doses-RFD implying minimal health risk. The target hazard quotient (non-carcinogenic) and hazard index-HI had values <1suggesting minimal health risk of non-carcinogenic origin but HI value showed potency of increase. The value of Incremental Lifetime Cancer Risk-ILCR ranged from 10-5-10-2 with Ni and Cd within the acceptable range of 10-4-10-6 while Cr and Pb exceeded the limit. The target cancer risk-TR had values of 10-3 indicating moderate to high risk according to the New York State Department of Health classification. The study concluded the presence of moderate to high carcinogenic risk due to Cr and Pb for consumers of heavy metal contaminated seafood (bivalves) in southern Nigeria. Minimal consumption and further action are advised with regular monitoring to detect changes.
ABSTRACT- Aquatic organisms have been considered to concentrate metals several times greater than environmental levels. Fishes have been used for many decades to evaluate the pollution status of water and thus considered as excellent biological indicator of heavy metals in aquatic environments. Heavy metals are natural tress components of the aquatic environment, but their levels have increased due to domestic, industrial, mining and agricultural activities. These heavy metals when accumulated in the fish tissues, they damage and weaken the mechanisms concerned leading to physiological, pathological and biochemical changes. The lead is non essential element while cobalt is an essential element for living organisms but its presence in fresh water in higher concentration are toxic to organism’s brain, liver, ovary, kidney and gills of the fish. The present study was aimed to investigate the changes due to two heavy metals (lead & cobalt) on the activity of the antioxidant enzyme, Catalase (CAT), Reduced glutathione (GSH), and Lipid peroxidation (LPO) in the brain of Danio rerio during 5, 10, 15 and 20 days of exposure period. For this study adult fishes were exposed to four different concentrations viz., 20, 30, 40 and 50 mg/l of cobalt and 5, 9, 13, and 17 mg/l of lead. Key-words- Zebrafish, Lead, Cobalt, Catalase, LPO, Glutathione, Heavy metals
An Analysis and Study in Light of Phytoremediation of Heavy Metal Contaminate...ijtsrd
"The modern movement quickens contamination of the
biosphere, particularly the soil. These days soil
contamination is getting impressive open
consideration since the size of this issue is developing
quickly. Heavy metals are the most hazardous
substances in the earth because of their abnormal state
of toughness and harmfulness to the biota. Various
examinations have been led around there went for
building up an effective and prudent approach to
remediate the soil contaminated with heavy metals.
Regular remediation techniques, for example,
physical, warm and concoction medications are
exceptionally costly. Phytoremediation is a creating
innovation which utilizes plants and their related
organisms for the remediation of soil defilement. This
procedure is practical without making unsettling
influence to the scene. This paper resembles a point of
reference or resource in distinguishing the issues
related with heavy metal contaminated soil and other
term known as Phytoremediation."
10 Insightful Quotes On Designing A Better Customer ExperienceYuan Wang
In an ever-changing landscape of one digital disruption after another, companies and organisations are looking for new ways to understand their target markets and engage them better. Increasingly they invest in user experience (UX) and customer experience design (CX) capabilities by working with a specialist UX agency or developing their own UX lab. Some UX practitioners are touting leaner and faster ways of developing customer-centric products and services, via methodologies such as guerilla research, rapid prototyping and Agile UX. Others seek innovation and fulfilment by spending more time in research, being more inclusive, and designing for social goods.
Experience is more than just an interface. It is a relationship, as well as a series of touch points between your brand and your customer. Here are our top 10 highlights and takeaways from the recent UX Australia conference to help you transform your customer experience design.
For full article, continue reading at https://yump.com.au/10-ways-supercharge-customer-experience-design/
http://inarocket.com
Learn BEM fundamentals as fast as possible. What is BEM (Block, element, modifier), BEM syntax, how it works with a real example, etc.
How to Build a Dynamic Social Media PlanPost Planner
Stop guessing and wasting your time on networks and strategies that don’t work!
Join Rebekah Radice and Katie Lance to learn how to optimize your social networks, the best kept secrets for hot content, top time management tools, and much more!
Watch the replay here: bit.ly/socialmedia-plan
Content personalisation is becoming more prevalent. A site, it's content and/or it's products, change dynamically according to the specific needs of the user. SEO needs to ensure we do not fall behind of this trend.
Lightning Talk #9: How UX and Data Storytelling Can Shape Policy by Mika Aldabaux singapore
How can we take UX and Data Storytelling out of the tech context and use them to change the way government behaves?
Showcasing the truth is the highest goal of data storytelling. Because the design of a chart can affect the interpretation of data in a major way, one must wield visual tools with care and deliberation. Using quantitative facts to evoke an emotional response is best achieved with the combination of UX and data storytelling.
Succession “Losers”: What Happens to Executives Passed Over for the CEO Job?
By David F. Larcker, Stephen A. Miles, and Brian Tayan
Stanford Closer Look Series
Overview:
Shareholders pay considerable attention to the choice of executive selected as the new CEO whenever a change in leadership takes place. However, without an inside look at the leading candidates to assume the CEO role, it is difficult for shareholders to tell whether the board has made the correct choice. In this Closer Look, we examine CEO succession events among the largest 100 companies over a ten-year period to determine what happens to the executives who were not selected (i.e., the “succession losers”) and how they perform relative to those who were selected (the “succession winners”).
We ask:
• Are the executives selected for the CEO role really better than those passed over?
• What are the implications for understanding the labor market for executive talent?
• Are differences in performance due to operating conditions or quality of available talent?
• Are boards better at identifying CEO talent than other research generally suggests?
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
The study examined the concentration of heavy metals
in water, soil and vegetables growing wildly on cement-polluted
soil of Rewa city, India. Accumulation of HMs in vegetables
occurs by various sources but soil is considered the major one. In
this study, soil to vegetable transfer factor (TF) for various HMs
were also calculated and data showed that TF values differed
significantly between soil and vegetable, the difference in TF
values among different vegetables may be attributed to
differences in element uptake by different vegetables. However
TF values obtained for all vegetables were below (1) at all sites.
TF were computed to quantify relative differences in
bioavailability of metals to vegetables to identify the efficiency of
a vegetables species to accumulate a HM(s). These factors were
based on roots uptake of metals and discount the foliar
absorption of atmospheric metal deposits. However TF does not
present the risk associated with the metal in any form.
Assessment of remediation Potentials of maize (Zea mays) on sites co-contamin...IJAEMSJORNAL
Phytoremediation is a promising technology for the remediation of sites co-contaminated with inorganic and organic pollutants. A pot experiment was conducted to evaluate the remediation potential of Z.mays in soil co- contaminated with Pb and antracene. Pristine sandy loam soils were polluted with Pb chloride salt and antracene at three different levels (50mg/kg of Pb, 100mg/kg of Pb, and 100mg/kg of Pb+100mg/kg of antracene) and laid out in completely randomized design with 3 replicates. Shoot dry matter weight was significantly reduced (p≤0.05) when compared with control treatments by 40% when exposed to100mg kg-1 of Pb. There was a 48% inhibition of shoot dry matter of Z.mays relative to control treatments when 100 mg Pb kg-1 was mixed with 100 mgkg-1 antracene. Root and shoot metal concentration in Zea mays increased with increasing concentration of Pb. The average Translocation Factor (TF < 1 (0.69) obtained suggests that Zea mays predominantly retains Pb in the root portion of the plant. There was a 5% increase in shoot Pb concentration when soil was contaminated with Pb and antracene. The extractable antracene decreased significantly (p≤0.05) in soil planted with Z.mays as well as in pots without maize plant. This accounted for 65 and 72% of antracene dissipation in planted soil and 40-46% dissipation in unplanted soil. This result suggested that Zeamays is a promising candidate for uptake Pb and dissipation of antracene in co-contaminated soils.
International Journal of Computational Engineering Research (IJCER) is dedicated to protecting personal information and will make every reasonable effort to handle collected information appropriately. All information collected, as well as related requests, will be handled as carefully and efficiently as possible in accordance with IJCER standards for integrity and objectivity.
Food security in a growing population with limited natural resources is one of
the most important issues of the world. Accumulation of heavy metals in food and
their concentrations increase and reaching to a risk limit can threaten human health.
The purpose of this study, is to study the heavy metals lead and cadmium in
vegetables, cultured on spinach and watercress at 10 Gardens of Ardabil. This study is
cross-sectional and 81 samples in water, soil, and spinach and watercress were
prepared during the months of June, July and August in 2015 and after preparation
according to the standard methods and using atomic absorption spectrophotometer
(Perkin Elmer) for the determination of heavy metals. SPSS software was used for data
analysis. The results showed that the mean level of lead and cadmium in all samples
were less than the EPA standard. Between studied orchards in terms of the amount of
cadmium and lead no statistically significant different was seen. The independent ttest
showed that in terms of cadmium between two species of spinach and watercress
there found a significant difference at the 5% level so that the amount of cadmium in
spinach was more than the watercress. Since the concentration of heavy metals in all
samples at second and third stages in July and August were zero, but in the first step
in June, the amount of heavy metals have been found in some samples showed that
all three samples of first cut had more contamination than second and third cut. And
in this case, the concentration of heavy metal pollution in hibernation at vegetable
gardens Ardabil is possible. The results of spinach cadmium amount in the first cut in
the three garden of viz.,3, 6 and 10 showed that in the garden (3), the amount of
cadmium in water is higher than the standard and is concentrated in spinach and the
gardens of 6 and 10 Cadmium in the soil of the gardens, is slightly higher that is
condensed in spinach thus it can be considered that spinach in terms of cadmium has
bioaccumulation.
mpact of Some Ecological Factors on the Occurrence and Distribution of Mitosp...inventionjournals
International Journal of Pharmaceutical Science Invention (IJPSI) is an international journal intended for professionals and researchers in all fields of Pahrmaceutical Science. IJPSI publishes research articles and reviews within the whole field Pharmacy and Pharmaceutical Science, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
Evaluation of some heavy metals in roadside soil along Samaru-Giwa road, Zari...Innspub Net
This research work was carried out to evaluate the concentrations of some heavy metals (Pb, Cd, Cu, Zn and Mn) in roadside soil along Samaru-Giwa road, Zaria, Nigeria. Four sampling locations were selected (ABUTH, NAPRI, Marabar Guga and ABU Dam Quarters in Ahmadu Bello University, Zaria main campus which served as the control site). Soil samples were collected at 0, 50, 100 and 200 m distances from the roadside in three replicates, air dried at room temperature, sieved and kept in specimen bottles with appropriate labels pending analysis. Samples were digested and analyzed for concentrations of Lead (Pb), Cadmium (Cd), Copper (Cu), Zinc (Zn) and Manganese (Mn) using Atomic Absorption Spectrophotometer (AAS). Concentrations of these heavy metals were observed to be significantly higher at 0 m than the other distances from the roadside and this decreased with increasing distance from the roadside. There was generally no significant difference in soil heavy metal concentration at 50- 200 m from the roadside. Soil lead concentration was mostly observed to be higher than that of all other metals studied. The concentrations of heavy metals observed in the soil samples was in the order of Pb>Mn>Zn >Cd >Cu. The contamination factors for individual heavy metal for the locations showed low to moderate contamination by the metals. Among the locations studied, Ahmadu Bello University Teaching Hospital, (ABUTH) showed the highest concentration of the most heavy metals while ABU Dam Quarters (Control), had the lowest concentration of most of the heavy metals. The study showed that, nearness to the roadside increased the soil heavy metal concentrations and this could invariably influence the same in crops planted or farm produce being dried along the roadside.
Monitoring of Selected Heavy Metals Uptake by Plant around Fagbohun Dumpsite,...iosrjce
IOSR Journal of Environmental Science, Toxicology and Food Technology (IOSR-JESTFT) multidisciplinary peer-reviewed Journal with reputable academics and experts as board member. IOSR-JESTFT is designed for the prompt publication of peer-reviewed articles in all areas of subject. The journal articles will be accessed freely online
About 20 topsoil samples collected from different locations of Gazipur industrial area were analyzed
to specify the elements by XRF. Soil pH, moisture content, organic carbon, organic matter, elements were
investigated by following proper procedure to find out the actual scenario of the soil status. Most soil samples
pH is tend to neutral which is most favorable for up taking nutrients. Moisture Content, Organic Carbon and
Organic Matter are enriched in the soil for plant growth. Speciation analysis are showing concentration trend
as Al>Fe>K>Mg>Ca>Rb>Mn>Si>P. Most of the elements are used as fertilizer for soil nutrient supplement
and also used as raw material in process industries. Though they are required for improving soil quality excess
amount is also harmful for soil biota. Soil chemical reaction with the surroundingis largely controlled by the
components present in soil matrix. Multivariate statistical analysis e.g: hierarchical cluster analysis showing 2
main clusters in the soil matrix which components are similar in characteristics or source.Group 1 and 2
formed by following different factors like common sources, attraction of the elements, similarity in
characteristics. Correlation matrix is exhibiting significant positive relationship among the components.
Different components have distinct positive relation with distinct components which differ from each other.
Principal component analysis denotes 3 principal components for composing soil matrix significantly.
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...UiPathCommunity
💥 Speed, accuracy, and scaling – discover the superpowers of GenAI in action with UiPath Document Understanding and Communications Mining™:
See how to accelerate model training and optimize model performance with active learning
Learn about the latest enhancements to out-of-the-box document processing – with little to no training required
Get an exclusive demo of the new family of UiPath LLMs – GenAI models specialized for processing different types of documents and messages
This is a hands-on session specifically designed for automation developers and AI enthusiasts seeking to enhance their knowledge in leveraging the latest intelligent document processing capabilities offered by UiPath.
Speakers:
👨🏫 Andras Palfi, Senior Product Manager, UiPath
👩🏫 Lenka Dulovicova, Product Program Manager, UiPath
UiPath Test Automation using UiPath Test Suite series, part 4DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap.
The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies.
Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques
What will you get from this session?
1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
Topics covered:
Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
JMeter webinar - integration with InfluxDB and GrafanaRTTS
Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application.
In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics.
Length: 30 minutes
Session Overview
-------------------------------------------
During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana:
- What out-of-the-box solutions are available for real-time monitoring JMeter tests?
- What are the benefits of integrating InfluxDB and Grafana into the load testing stack?
- Which features are provided by Grafana?
- Demonstration of InfluxDB and Grafana using a practice web application
To view the webinar recording, go to:
https://www.rttsweb.com/jmeter-integration-webinar
Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
Are you looking to streamline your workflows and boost your projects’ efficiency? Do you find yourself searching for ways to add flexibility and control over your FME workflows? If so, you’re in the right place.
Join us for an insightful dive into the world of FME parameters, a critical element in optimizing workflow efficiency. This webinar marks the beginning of our three-part “Essentials of Automation” series. This first webinar is designed to equip you with the knowledge and skills to utilize parameters effectively: enhancing the flexibility, maintainability, and user control of your FME projects.
Here’s what you’ll gain:
- Essentials of FME Parameters: Understand the pivotal role of parameters, including Reader/Writer, Transformer, User, and FME Flow categories. Discover how they are the key to unlocking automation and optimization within your workflows.
- Practical Applications in FME Form: Delve into key user parameter types including choice, connections, and file URLs. Allow users to control how a workflow runs, making your workflows more reusable. Learn to import values and deliver the best user experience for your workflows while enhancing accuracy.
- Optimization Strategies in FME Flow: Explore the creation and strategic deployment of parameters in FME Flow, including the use of deployment and geometry parameters, to maximize workflow efficiency.
- Pro Tips for Success: Gain insights on parameterizing connections and leveraging new features like Conditional Visibility for clarity and simplicity.
We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic.
Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
91mobiles recently conducted a Smart TV Buyer Insights Survey in which we asked over 3,000 respondents about the TV they own, aspects they look at on a new TV, and their TV buying preferences.
Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
State of ICS and IoT Cyber Threat Landscape Report 2024 previewPrayukth K V
The IoT and OT threat landscape report has been prepared by the Threat Research Team at Sectrio using data from Sectrio, cyber threat intelligence farming facilities spread across over 85 cities around the world. In addition, Sectrio also runs AI-based advanced threat and payload engagement facilities that serve as sinks to attract and engage sophisticated threat actors, and newer malware including new variants and latent threats that are at an earlier stage of development.
The latest edition of the OT/ICS and IoT security Threat Landscape Report 2024 also covers:
State of global ICS asset and network exposure
Sectoral targets and attacks as well as the cost of ransom
Global APT activity, AI usage, actor and tactic profiles, and implications
Rise in volumes of AI-powered cyberattacks
Major cyber events in 2024
Malware and malicious payload trends
Cyberattack types and targets
Vulnerability exploit attempts on CVEs
Attacks on counties – USA
Expansion of bot farms – how, where, and why
In-depth analysis of the cyber threat landscape across North America, South America, Europe, APAC, and the Middle East
Why are attacks on smart factories rising?
Cyber risk predictions
Axis of attacks – Europe
Systemic attacks in the Middle East
Download the full report from here:
https://sectrio.com/resources/ot-threat-landscape-reports/sectrio-releases-ot-ics-and-iot-security-threat-landscape-report-2024/
Key Trends Shaping the Future of Infrastructure.pdfCheryl Hung
Keynote at DIGIT West Expo, Glasgow on 29 May 2024.
Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
The key trends across hardware, cloud and open-source; exploring how these areas are likely to mature and develop over the short and long-term, and then considering how organisations can position themselves to adapt and thrive.
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024Tobias Schneck
As AI technology is pushing into IT I was wondering myself, as an “infrastructure container kubernetes guy”, how get this fancy AI technology get managed from an infrastructure operational view? Is it possible to apply our lovely cloud native principals as well? What benefit’s both technologies could bring to each other?
Let me take this questions and provide you a short journey through existing deployment models and use cases for AI software. On practical examples, we discuss what cloud/on-premise strategy we may need for applying it to our own infrastructure to get it to work from an enterprise perspective. I want to give an overview about infrastructure requirements and technologies, what could be beneficial or limiting your AI use cases in an enterprise environment. An interactive Demo will give you some insides, what approaches I got already working for real.
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024
C033109016
1. International Journal of Engineering Science Invention
ISSN (Online): 2319 – 6734, ISSN (Print): 2319 – 6726
www.ijesi.org Volume 3 Issue 3ǁ March 2014 ǁ PP.09-16
www.ijesi.org 9 | Page
Evaluation of Status of Ph and Conductivity on Transfer and
Enrichment Factors of Soil and Vegetables of Some Agricultural
Areas of Kaduna Metropolis Nigeria
1
Mahmud Imam Mohammed , 2
W.L.O Jimoh
1
Department of Applied Science, College of Science and Technology, Kaduna Polytechnic
2
Department of Pure and Industrial Chemistry, Bayero University, Kano Nigeria.
ABSTRACT: In this research work soil and some vegetables were collected from various irrigation sites of
Kaduna metropolis and analyzed for PH and conductivity using Jenway PH and conductivity meter. Transfer
factor and enrichment factor of the vegetable (tomatoes,lettuce, cabbage and spinach) were also determined via
heavy metal (Cu, Zn, Pb,Fe and Cd) analysis with the aid of atomic absorption spectrophotometer. In the soil
analysis it was found most PH values were mostly acidic which ranges between 5.8 to 6.9 with the exception
of. from Unguwan Dosa and Kurmin mashi with pH of 8.27 and 8.50 respectively. Based on pH values obtained
in this work which were predominantly acid and this influence the conductivity to be within the normal range as
well as moderately saline, hence, transfer factors from soil to spinach, tomatoes, cabbage and lettuce were
mostly below 1 showing that heavy metals are accumulated in their edible portion (leaves) and were less
compared to that of the soil (that is, absorb small amount of metal from the soil.) while few samples had
concentrations above or equal to 1 (≥ 1). This indicates that, the concentration of heavy metal accumulated in
the vegetable were higher than that of the soil. EF was also found to be from the anthropogenic source of
contamination with very few samples were from natural source, that is EF values ranges between 0.5 and 1.5
indicates that the metal is entirely from crust materials or natural processes, whereas EF values greater than
1.5 suggest that the sources are more likely to be from the anthropogenic source. This is because absorption
and accumulation of heavy metals in plant tissue depend upon many factors such as moisture,organic matter,
conductivity, pH and nutrient availability
KEYWORDS: Heavy Metals, Soil, vegetable, PH meter, conductivity meter, Atomic Absorption
Spectrophotometer (AAS), kaduna Metropolis,Nigeria.
I. INTRODUCTION
Heavy metals are among the major contaminant of food supply and are considered as problem to the
environment (Zaidi et al, 2005). Heavy metals contamination may occur due to irrigation with contaminated
water, the addition of fertilizers, metal based pesticides, industrial emissions, transportation, harvesting process
and storage. Advancement in technology has lead to high levels of industrialization leading to the discharge of
effluent bearing heavy metals into our environment.Toxic element is one which has neither essential nor
beneficial effect but only negative effects on normal metabolic function even when present in only small
amount. When vegetable accumulates heavy metals at a proportion exceeding the tolerance limit and if
consumed by man or other animals, then the excess proportion of these metals from the vegetables tend to
accumulates gradually in animal tissues at a very high concentration where it becomes toxic and causes
varieties of illness e.g. brain damage, tumor cell, miscarriage etc.Heavy metals concentrations in soil are
associated with biological and geological cycles and are influenced by anthropogenic activities such as
agricultural practices, industrial activities and waste disposal methods (Eja et al., 2003, Zuluyah et al, 2004).
Contamination and consequent pollution of the environment by toxic heavy metals have become an issue of
global concern due to their sources, widespread distribution and multiple effects on the ecosystem (Nriagu,
1990). Heavy metals are generally present in agricultural soils at low levels. Due to their cumulative behaviour
and toxicity, however, they have a potential hazardous effect not only on crop plants but also on human health
(Das et al., 1997).Excessive amount of fertilizers are applied to crops, considering that they are reasonable
insurances against yield losses and their economic consequences. Fertilizers contain not only major elements
necessary for plant nutrient and growth but also trace metal impurities such as Cd, Pb, or Ni (Zhan and Shan
2001). The uptake of these heavy metals by plants especially leafy vegetables is an avenue of their entry into the
human food chain with harmful effects on health (Uwah et al., 2009).
2. Evaluation of Status of Ph and Conductivity…
www.ijesi.org 10 | Page
Human beings are encourage to consume more vegetables and fruits, because they are good source of
vitamins, minerals, fibres and also beneficial to their health. However, these plants contain both essential and
toxic metals over a wide range of concentrations.The aim of this research work is to assess the effect
conductivity on the soil and also determine the level of some heavy metals absorb by some vegetables as well as
correlate the origin of such pollution due to human activities.
II. MATERIALS AND METHODS
Sample and Sampling:
Vegetables such as Spinach, Cabbage, Tomatoes and Lettuce samples were collected from twenty one
(21) different irrigation sites of the farmlands of the Kaduna metropolis where they were irrigated with water
from the river or pond which are sometimes contaminated. Soil samples were also randomly collected from the
farm where these vegetables were grown and irrigated with water. These samples were then stored in polythene
bags and taken to the laboratory and dried in an oven at 1050
c.The dried samples were ground with mortar and
pestle and sieved with 2mm sieve.
DESCRIPTION OF THE SAMPLING SITES
Soil samples for heavy metal determination were collected from twenty one (21) irrigation sites of the
Kaduna metropolis. These sites were Kabala (KBL), Danmani (DMN), Rigasa (RGS), Barnawa (BNW), Makera
(MKR), Kakuri (KKR), Badiko (BDK) Nasarawa (NAS, Malali (MAL), Kudenda (KUD), Kinkinau (KKN),
Kawo (KWO), Unguwan Rimi (URM), Unguwan Sanusi (UNS), Tudun Wada (TDW), Doka (DKA), Unguwan
Dosa (UDS), Kabala Costain (CTA), Kurmin Mashi (KMS) and Abakpa (ABK). In this research work soil
sample from Rigachikun (RCK) irrigation site was taken as control site.
Map of the Sampling points and the control
4. Evaluation of Status of Ph and Conductivity…
www.ijesi.org 12 | Page
SAMPLE PREPARATION
Determination of PH and conductivity
20g of the ground soil samples was placed in a beaker. 100cm3
of distilled water was added to form
solution. The PH and conductivity of sample solutions were determined using 3305 Jenway pH meter and ELE
470 conductivity meter respectably. The PH and conductivity of the soil samples were taken and recorded.
Vegetable samples
5g of the ground Vegetable samples were ashed in a muffle furnace at a temperature of 5500
c for five
hours and digested with 20cm3
of HNO3/H2O2 (2:1). The digested residues were dissolved with 50cm of
distilled water and filtered in 50cm3
volumetric flask.
Soil samples:
20g of the finely ground soil samples was mixed with 60cm3
(5:5:1) H2SO4/HNO3/HCl acid mixtures
and the content were refluxed for 12 hours. The sample was washed with 1M HNO3 and 100cm3
of deionized
water was also added and centrifuged. The elements were determined using bulk scientific model VPG 210
model atomic absorption spectrophotometer (AAS).
In order to investigate the ratio of the concentration of heavy metal in a plant to the concentration heavy metal
in soil, the transfer factor was calculated based on the method described by Oyedele et al, 1995 and Harrison
and Chirgawi, 1989).
TF = Ps (µgg-1
/ St (µgg-1
)
Where Ps is the plant metal content originating from the soil and St is the total content in the soil.
The enrichment factor (EF) has been calculated to derive the degree of soil contamination and heavy metal
accumulation in soil and in plants growing on contaminated site with respect to soil and plants growing on
uncontaminated soil (Kisku et al., 2000).
According to Ergin et al., (1991) and Rubio et al., (2000) the metal enrichment factor (EF) is defined as follows:
background
Fe
M
sample
Fe
M
EF
Where M = Metal Concentration in soil sample and EF is the enrichment factor. (M/Fe)sample is the ratio of metal
and (M/Fe)background is the ratio of metals and Fe concentration of a background. The background concentrations
of metals were taken from an undisturbed area.
Five contamination categories are recognized on the basis of the enrichment factor as follows: (Sutherland 2000)
EF<2 is deficiency to minimal enrichment
EF<2-5 is moderate enrichment
EF<2-20 is significant enrichment
EF20-40 is very high enrichment
EF>40 is extremely high enrichment
IV. RESULTS AND DISCUSSION
Table 1.0: Mean pH and Conductivity in soil of different irrigation sites of Kaduna metropolis
Sampling Sites Mean pH
Mean conductivity
(µscm-1
)
SL (KBL) 6.5 ± 0.306 1.793 ± 0.301
SL (DMN) 6.4 ± 0.451 1.570 ± 0.044
SL (RGS) 6.0 ± 0.681 1.760 ± 0.052
SL (BNW) 6.4 ± 0.400 1.827 ± 0.237
SL (MKR) 6.2 ± 0.115 1.720 ± 0.017
SL (KKR) 6.6 ± 0.173 1.990 ± 0.060
SL (BDK) 6.3 ± 0.306 1.138 ± 0.844
SL (NAS) 5.9 ± 0.473 1.470 ± 0.070
SL (MAL) 6.2 ± 0.252 2.537 ± 0.474
SL (KUD) 6.5 ± 0.173 1.960 ± 0.442
SL (KKN) 5.9 ± 0.603 2.297 ± 0.614
SL (KWO) 5.8 ± 0.300 2.633 ± 0.754
SL (URM) 6.9 ± 1.710 2.260 ± 0.862
SL (UNS) 5.9 ± 0.404 2.343 ± 0.560
SL (TDW) 6.1 ± 0.557 2.453 ± 0.912
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SL (DKA) 6.3 ± 0.473 1.723 ± 0.059
SL (UDS) 8.3 ± 0.208 1.610 ± 0.036
SL (CTA) 6.2 ± 0.473 2.110 ± 0.235
SL (KMS) 8.5 ± 0.400 1.723 ± 0.211
SL (ABK) 6.4 ± 0.400 1.620 ± 0.062
SL RCK (Control) 5.8 ± 0.681 2.643 ± 0.625
Table 1.0 shows the summary of mean pH and conductivity in soil from different irrigation sites.
Conductivity is a measurement of ability of conductor to convey electricity and is mainly due to dissolved
mineral matters as well as ionic solute. The magnitude of this, is a useful indication of the total concentration of
the ionic solute. That is higher the conductivity value of a given soil the more the concentration of ions present.
The above table also shows conductivity of the soil from the irrigation sites of Kaduna metropolis in which they
are all within the normal range as stated by Zaku et al., (2011). Boulding (1994) classified conductivity in soil
as: non saline when < 2; moderate saline when it is between 2 -8 ; very saline when it is between 8 – 16 ;
extremely saline if > 16. From the results of this study, most of the conductivity are moderately saline with few
being non saline. The amount of heavy metals mobilized in soil environment is a function of pH, properties of
metals, redox conditions, soil chemistry, organic matter content, clay content, cation exchange capacity and
other soil properties (Arun and Mukherjee, 1998; Kimberly and William, 1999; Sauve et al., 2000). The result
of metal analysis showed that, most of the sampling sites had high concentration of metals such lead and
cadmium evaluated in the soil and this account for high conductivity while others had moderate concentration of
metals such (Zn,Cu and Fe) analyzed in the soil and may account for low conductivity. Heavy metals are
generally more mobile at pH < 7 than at pH > 7.The pH of the soils from the irrigation sites of Kaduna
metropolis ranged 5.80 to 6.93.This is therefore hazardous for agricultural purposes since crops are known to
take up and accumulate heavy metals from contaminated soils in their edible portions (Wei et al.,) in contrast
with samples from Unguwan Dosa and Kurmin mashi with pH of 8.27 and 8.50 respectively.
Table 4: Mean for all the transfer factor(TF) for the whole vegetable in irrigation sites.
Table shows the transfer factor of heavy metals from soil to vegetables such as spinach,tomatoes,cabbage
and lettuce. For spinach samples, TF values were below 1 with the exception of samples from Kawo (2.45 for
Cd) and Tudun wada (1.00 for Cd), Unguwan dosa (1.00 for Cu), Abakpa (1.00 for Pb) and Rigachikun (1.11
for). For tomatoes samples are below 1 with the exception of samples from Rigasa (17.25 for Cd), Kakuri (1.01
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for Cd), Kawo (1.56), Unguwan Sanusi (3.00), Tudunwada (1.60) , Doka (1.06), Abakpa (1.00 for both Cu and
Pb) and Rigachikun (control) (1.00 for Cu). All TF for cabbage samples are below 1 with the exception of
samples from Rigasa (18.25 for Cd), Kakuri (1.27 for Cd), Kawo (2.35 for Cd), Unguwan Sanusi (15.66 for Cd),
Tudunwada (2.95), Costain (1.00 for Cu) and Kurmi mashi (1.07 for Cu and 1.15 for Pb). For lettuce samples
are below 1 with the exception of samples from Rigasa (2.66 for Cd),Malali (1.01 for Cd, 1.03 for Fe and 1.17
for Cu),Kawo (1.48 for Cd) , Tudun wada(1.00 for Cd ),Doka (1.09 for Cd) and Rigachikun (control) 1.18 for
Cu.).In situation whereby the TF values were below 1 showing that heavy metals are accumulated in their edible
portion (leaves) are less compared to that of the soil (that is, absorb small amount of metal from the soil.)
Transfer factor is one of the key components of human exposure to metals through the food chain. Transfer
factors were computed for the heavy metal to quantify the relative differences in bioavailability of metals to
plants so as to identify the efficiency of a plant species to accumulate a given heavy metal. these factor were
based on the root uptake of the metals and discount the foliar absorption of atmospheric metal deposits
(Lokeshwari and Chandrapper,2006).Based on pH values obtained in this work which were predominantly acid
and this influence the conductivity to be within the normal range as well as moderately saline, hence, transfer
factors from soil to spinach, tomatoes, cabbage and lettuce in this research work were mostly below 1 showing
that heavy metal is accumulated in their edible portion (leaves) and were less compared to that of the soil (that
is, absorb small amount of metal from the soil.) while few samples had concentrations above or equal to 1 (≥ 1).
This indicates that, the concentration of heavy metal accumulated in the vegetable were higher than that of the
soil.
This is because absorption and accumulation of heavy metals in plant tissue depend upon many factors
such as moisture,organic matter, pH and nutrient availability (Sharma et al., 2004) so also the physiological
response of each plant do exerts control on the degree of bioaccumulation of different metal. Consequently,
metal mobility and plant availability are very important when assigning the effect of soil contamination on plant
metal uptake as well as translocation and toxicity or ultra structural alterations (Luo and Rammer,1995;Stresty
and Madhara ,1999; Chandra et al., 2001.). The mobility and bioavailability of trace elements in soil has been
increasing concern both in agricultural and environmental studies due to possible toxic effect of
bioaccumulation in plants and vertical leaching or transport into shallow ground water system. The mobility of
metal like zn increase with decreasing pH but in alkaline soils it could be mobile because of its ability to create
mineral – organic compound and complexes. Pb has a strong affinity for organic ligand and the formation of
such complexes may greatly increase the mobility of pb in soil. The acidic range of soil in this work was found
to increase the mobilization of heavy metals and as such increase their uptake.
Table 3.0 Enrichment factor of heavy metals in soil in irrigated farmland of Kaduna metropolis
Table3.0 shows enrichment factors for heavy metals such as Cd,Fe ,Zn ,Cu and Pb in soil. Cadmium from
Malali (1.6) and Unguwan Dosa (1.6 ) samples occurred with EF valued greater than 1.5 suggesting
anthropogenic. The enrichment factor for Zinc shows that samples from Malali (2.2) and Unguwan Dosa (2.0)
are moderatly enriched. Enrichment factors (EF) for copper showed that samples Barnawa (2.6), Malali (2.1)
and Unguwan Dosa (2.0) are moderately enriched and as such they are from anthropogenic source.
Sampling sites Elements
Cd Zn Cu Pb Fe
Kabala 0.5 0.9 0.5 0.5 1.11
Danmani 0.4 0.7 0.7 0.5 1.15
Rigasa 0.01 0.8 0.2 0.8 1.22
Barnawa 0.4 0.4 2.6 2.1 2.37
Makera 0.7 1.2 1.2 0.4 0.84
Kakuri 0.1 0.7 0.2 2.2 1.49
Badiko 0.5 0.7 0.6 0.3 1.51
Nasarawa 0.7 0.9 1.1 0.6 1.11
Malali 1.6 2.2 2.1 0.2 0.37
Kudenda 0.8 1.1 1.1 0.6 0.94
Kinkinau 0.3 1.0 1.1 0,6 0.97
Kawo 0.1 0.6 1.2 2.3 1.75
Unguwan Rimi ND 0.8 1.3 0.2 1.33
Unguwan sanusi 0.01 0.6 0.5 0.1 1.65
Tudun wada 0.1 0.5 1.5 0.3 1.98
Doka 0.3 0.5 1.2 2.4 1.99
Unguwan Dosa 1.6 2.0 2.0 1.3 0.51
Costain 0.9 1.2 0.9 0.5 0.84
Kurmin mashi 0.6 0.7 0.9 0.4 0.74
Abakpa 1.0 1.6 1.1 1.0 0.61
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The table also showed enrichment factor for lead in which it has the following, Kakuri (2.2), Kawo
(2.3), Barnawa (2.1) and Doka (2.4) suggesting that they are from anthropogenic source.The EF for iron are
mostly from natural source. All these prediction were made in accordance with Zhang and Liu (2002) The
effect of conductivity of soil is also extended to their enrichment Factor, since enrichment factor (EF) is the
degree of soil contamination and heavy metal accumulation in soil and plants growing in such contaminated
site. In this research work it was found that the conductivity are within the normal range, moderately saline
while some are non saline, as a result of this EF was found to be from the anthropogenic source of
contamination with very few samples were from natural source as stated by Zhang and Liu (2002), that is EF
values ranges between 0.5 and 1.5 indicates that the metal is entirely from crust materials or natural processes,
whereas EF values greater than 1.5 suggest that the sources are more likely to be from the anthropogenic source.
Similar enrichment factor which was ascribed to the uptake of heavy metals by plant during their growth and
development. The rate of metal uptake by the plant, that is TF as well as EF could have been affected by other
factors such as plant age, plant species, soil pH ,nature of soil and climate. (Alloway and Ayres,1997)
V. CONCLUSION
From the result of the pH and metals analyzed in this work, some areas had moderate concentration of
metals as evaluated in the soil and may account for the low conductivity while others had high metal
concentration of metals with respect to their pH and hence account for high conductivity. Heavy metals are
generally more mobile at pH < 7 than at pH > 7.The pH of the soils from the irrigation sites of Kaduna
metropolis ranged 5.80 to 6.93. It has been established that transfer factor (TF) and enrichment factor (EF) have
strong relationship with one another. Since heavy metals accumulated in the soil and transfer to the vegetable
(plant) were either from natural source or from the human activities known as anthropogenic source as
revealed from the study of enrichment factor (EF). transfer factors from soil to spinach, tomatoes, cabbage and
lettuce in this research work were mostly below 1 showing that heavy metals were accumulated in their edible
portion (leaves) and were less compared to that of the soil (that is, absorb small amount of metal from the soil.)
while few samples had concentrations above or equal to 1 (≥ 1).In this research work it was found that the
conductivity are within the normal range, moderately saline while some are non saline, as a result of this EF, the
soils analyzed were found to be from the anthropogenic source of contamination with very few samples from
natural source
ACKNOWLEDGEMENT
The Authors were grateful to the management of Kaduna Polytechnic for using their laboratory, and equipment
in carrying out this research work.
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