The mobility of trace metals in soils strongly depends on the forms in which the metals are bound to major soil components. This study aims to determine the total concentrations and extractable fractionations of Cd, Co and Ni in soil samples collected from dumpsites across Rivers State, Nigeria. Solar Thermo Elemental Atomic Absorption Spectrometer model (SG 71906) was used after mixed acid digestion (HCl: HNO3 in a ratio of 3:1 v/v) and modified BCR sequential extraction procedure. The concentration levels of Cd, Co and Ni in all the samples varied, with mean values of 13.48 11.85, 25.29 17.62 and 20.52 15.66 mg/kg, respectively. Using the Community Bureau of Reference (BCR) sequential extraction procedure, the elements recoveries were within the acceptable range varying between 92.10% and 98.33% for Co and Cd, respectively. Data from the BCR extraction procedure revealed that the majority of Cd fraction was associated with residual fraction, Co fraction bound to the exchangeable fraction, while Ni was found to be associated with oxidisable fraction. These results suggest that the trace elements in the soil were highly mobile and bioavailable for plant uptake. Results from the findings particularly correlation analysis is indicative of the fact that some of the contaminants may have anthropogenic and natural origin. Hence, these contaminants could pose significant threat to human health and the environment.
{"title":"Evaluation of Total Concentrations and Extractable Fractionations of Cd, Co and Ni in Soils from Dumpsites across Rivers State, Nigeria","authors":"R. N. Oduah, P. Amaibi, J. L. Konne, N. Boisa","doi":"10.4314/jasem.v28i1.1","DOIUrl":"https://doi.org/10.4314/jasem.v28i1.1","url":null,"abstract":"The mobility of trace metals in soils strongly depends on the forms in which the metals are bound to major soil components. This study aims to determine the total concentrations and extractable fractionations of Cd, Co and Ni in soil samples collected from dumpsites across Rivers State, Nigeria. Solar Thermo Elemental Atomic Absorption Spectrometer model (SG 71906) was used after mixed acid digestion (HCl: HNO3 in a ratio of 3:1 v/v) and modified BCR sequential extraction procedure. The concentration levels of Cd, Co and Ni in all the samples varied, with mean values of 13.48 11.85, 25.29 17.62 and 20.52 15.66 mg/kg, respectively. Using the Community Bureau of Reference (BCR) sequential extraction procedure, the elements recoveries were within the acceptable range varying between 92.10% and 98.33% for Co and Cd, respectively. Data from the BCR extraction procedure revealed that the majority of Cd fraction was associated with residual fraction, Co fraction bound to the exchangeable fraction, while Ni was found to be associated with oxidisable fraction. These results suggest that the trace elements in the soil were highly mobile and bioavailable for plant uptake. Results from the findings particularly correlation analysis is indicative of the fact that some of the contaminants may have anthropogenic and natural origin. Hence, these contaminants could pose significant threat to human health and the environment.","PeriodicalId":15093,"journal":{"name":"Journal of Applied Sciences and Environmental Management","volume":"44 45","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140487356","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}
Sustainability is an important issue in energy provision for meeting increasing needs. However, harvesting energy resources in communities while protecting the ecosystem and reducing issues of environmental degradation to the barest minimum are the ideal target for stakeholders, but usually not always attainable. The objective of this paper is therefore to review the sustainable energy arrangements with ambitions to significantly bridge the gaps between oil and gas operations of firms and improved community well-being in the Niger Delta Region, Nigeria using secondary information and data harvested from previously published studies found Online. Specifically, the paper will examine some effects of oil and gas exploration in communities, examines metrics that can be used to track community well-being, the possible conflicts of interest that could occur between firms and host communities in oil and gas operations as well as measures in the past to ameliorate these challenges and improve the community well-being in issues pertaining to oil and gas operations of firms. The study recommends that continuous stakeholder engagement be carried out in order to make for smooth oil and gas operations. Furthermore, it makes for proffers workable solutions to the challenges that accentuate possible conflicts. The study also identifies different key stakeholders in this gap-bridging process and their various roles.
{"title":"Energy Sustainability: Bridging the Gap between Oil and Gas Operations and Community Well-Being in the Niger Delta Region, Nigeria","authors":"J. Chijioke-Churuba","doi":"10.4314/jasem.v27i11.20","DOIUrl":"https://doi.org/10.4314/jasem.v27i11.20","url":null,"abstract":"Sustainability is an important issue in energy provision for meeting increasing needs. However, harvesting energy resources in communities while protecting the ecosystem and reducing issues of environmental degradation to the barest minimum are the ideal target for stakeholders, but usually not always attainable. The objective of this paper is therefore to review the sustainable energy arrangements with ambitions to significantly bridge the gaps between oil and gas operations of firms and improved community well-being in the Niger Delta Region, Nigeria using secondary information and data harvested from previously published studies found Online. Specifically, the paper will examine some effects of oil and gas exploration in communities, examines metrics that can be used to track community well-being, the possible conflicts of interest that could occur between firms and host communities in oil and gas operations as well as measures in the past to ameliorate these challenges and improve the community well-being in issues pertaining to oil and gas operations of firms. The study recommends that continuous stakeholder engagement be carried out in order to make for smooth oil and gas operations. Furthermore, it makes for proffers workable solutions to the challenges that accentuate possible conflicts. The study also identifies different key stakeholders in this gap-bridging process and their various roles.","PeriodicalId":15093,"journal":{"name":"Journal of Applied Sciences and Environmental Management","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139218387","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}
The objective of this work was to evaluate the concentrations of essential metals (K, Na, Ca, Mg, Fe, Cu, Se, B, P, and Zn) and potential health risks in chicken giblets commonly sold to consumers in Lokoja's main market, Kogi State, Nigeria. Using appropriate standard methods, samples were digested with 65% HNO3, and the digest was analyzed using an Inductively Coupled Plasma-Optical Emission Spectrometer. The mean concentrations (mg/kg) in gizzard ranged from 0.06±0.08 (Cu) to 28.1±6.9 (P), kidney 0.04±0.01 (Cu) to 24±10 (P), and liver 0.09±0.10 (Cu) to 47±11(P). All the essential metals examined were below the FAO and WHO's permissible standards. The observed trend in the accumulation of metal concentration in chicken giblets was P > Na > Ca > Fe > Mg > Zn > B > Se > K, Cu. The health risk analyses revealed that the current exposure levels will not have a major negative impact on human health, as the hazard quotient for each metal was less than one (<1) and the overall hazard index was also less than 1. Although the population will not be exposed to the potential health risks from these metals presently, there is a need to regularly assess the levels of heavy metals in chicken giblets to maintain protection against negative health effects.
这项工作的目的是评估尼日利亚科吉州洛科贾主要市场上通常出售给消费者的鸡内脏中必需金属（K、Na、Ca、Mg、Fe、Cu、Se、B、P 和 Zn）的浓度以及潜在的健康风险。采用适当的标准方法，用 65% 的 HNO3 对样品进行消化，然后用电感耦合等离子体-光发射光谱仪对消化液进行分析。胗中的平均浓度（毫克/千克）为 0.06±0.08（铜）至 28.1±6.9（磷），肾中的平均浓度（毫克/千克）为 0.04±0.01（铜）至 24±10（磷），肝中的平均浓度（毫克/千克）为 0.09±0.10（铜）至 47±11（磷）。所有检测的基本金属含量均低于粮农组织和世卫组织的允许标准。鸡内脏中金属浓度的累积趋势为 P > Na > Ca > Fe > Mg > Zn > B > Se > K、Cu。健康风险分析表明，目前的暴露水平不会对人类健康产生重大负面影响，因为每种金属的危害商数均小于 1（<1），总体危害指数也小于 1。虽然目前人们不会暴露于这些金属的潜在健康风险中，但有必要定期评估鸡内脏中的重金属水平，以保持对健康的负面影响。
{"title":"Evaluation of Essential Metal Concentration and Possible Potential Health Risk in Chicken Giblets Commonly Sold to Consumers in Lokoja Main Market, Kogi State, Nigeria","authors":"Emurotu, JE Habib","doi":"10.4314/jasem.v27i11.27","DOIUrl":"https://doi.org/10.4314/jasem.v27i11.27","url":null,"abstract":"The objective of this work was to evaluate the concentrations of essential metals (K, Na, Ca, Mg, Fe, Cu, Se, B, P, and Zn) and potential health risks in chicken giblets commonly sold to consumers in Lokoja's main market, Kogi State, Nigeria. Using appropriate standard methods, samples were digested with 65% HNO3, and the digest was analyzed using an Inductively Coupled Plasma-Optical Emission Spectrometer. The mean concentrations (mg/kg) in gizzard ranged from 0.06±0.08 (Cu) to 28.1±6.9 (P), kidney 0.04±0.01 (Cu) to 24±10 (P), and liver 0.09±0.10 (Cu) to 47±11(P). All the essential metals examined were below the FAO and WHO's permissible standards. The observed trend in the accumulation of metal concentration in chicken giblets was P > Na > Ca > Fe > Mg > Zn > B > Se > K, Cu. The health risk analyses revealed that the current exposure levels will not have a major negative impact on human health, as the hazard quotient for each metal was less than one (<1) and the overall hazard index was also less than 1. Although the population will not be exposed to the potential health risks from these metals presently, there is a need to regularly assess the levels of heavy metals in chicken giblets to maintain protection against negative health effects.","PeriodicalId":15093,"journal":{"name":"Journal of Applied Sciences and Environmental Management","volume":"60 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139219181","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}
Concrete production and waste generation are among human activities that negatively impact the environment. This study investigated the effects of fly ash on compressive strength and durability properties of lean concrete using appropriate standard methods. The results showed that the compressive strength of the control mix is higher than those of fly ash concrete mixes. The compressive strength of the fly ash blended mixes decreased as the replacement level increased. However, the strength increased with hydration time, and the optimal replacement level being 5%. While the chloride ion penetration and water absorption rate decreased, the sulfate resistance increased with hydration time and replacement level. The fly ash mixes exhibited better durability properties than the control mix in all durability tests conducted. The SEM-EDX analysis showed that mixes with well-packed microstructures exhibited favorable compressive and durability properties. In conclusion, Class C fly ash is recommended for lean concrete mixes at a replacement level of up to 15% when compressive strength is the primary concern, while mixes with a replacement level of 25% or more are recommended in areas susceptible to sulfate attack.
混凝土生产和废物产生是对环境产生负面影响的人类活动之一。本研究采用适当的标准方法研究了粉煤灰对瘦身混凝土抗压强度和耐久性能的影响。结果表明，对照混合料的抗压强度高于粉煤灰混凝土混合料。粉煤灰掺合料的抗压强度随着掺量的增加而降低。然而，强度随着水化时间的延长而增加，最佳掺量为 5%。虽然氯离子渗透率和吸水率有所下降，但抗硫酸盐性能却随着水化时间和掺量的增加而提高。在所有耐久性测试中，粉煤灰混合料的耐久性能都优于对照混合料。SEM-EDX 分析表明，具有良好堆积微结构的混合料具有良好的抗压和耐久性能。总之，当抗压强度是主要考虑因素时，建议将 C 级粉煤灰用于掺量不超过 15%的瘦身混凝土拌合物，而在易受硫酸盐侵蚀的地区，建议将掺量控制在 25%或以上。
{"title":"Effects of Fly Ash on Compressive Strength and Durability Properties of Lean Concrete","authors":"J. O. Ohwofasa, C. Ikumapayi, C. Arum","doi":"10.4314/jasem.v27i11.32","DOIUrl":"https://doi.org/10.4314/jasem.v27i11.32","url":null,"abstract":"Concrete production and waste generation are among human activities that negatively impact the environment. This study investigated the effects of fly ash on compressive strength and durability properties of lean concrete using appropriate standard methods. The results showed that the compressive strength of the control mix is higher than those of fly ash concrete mixes. The compressive strength of the fly ash blended mixes decreased as the replacement level increased. However, the strength increased with hydration time, and the optimal replacement level being 5%. While the chloride ion penetration and water absorption rate decreased, the sulfate resistance increased with hydration time and replacement level. The fly ash mixes exhibited better durability properties than the control mix in all durability tests conducted. The SEM-EDX analysis showed that mixes with well-packed microstructures exhibited favorable compressive and durability properties. In conclusion, Class C fly ash is recommended for lean concrete mixes at a replacement level of up to 15% when compressive strength is the primary concern, while mixes with a replacement level of 25% or more are recommended in areas susceptible to sulfate attack.","PeriodicalId":15093,"journal":{"name":"Journal of Applied Sciences and Environmental Management","volume":"49 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139220414","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}
S. A. Salami, A. J. Oyemakinde, M. O. Allen, H. Salahdeen, I. I. Olatunji-Bello, B. Murtala
Inhabitants of rural Niger-Delta oil communities in Nigeria often, unintentionally, consume crude oil polluted water (COCW) due to crude oil spills in the region. The impact of vitamin C supplementation during COCW ingestion on the contractile mechanism of the jejunum is not fully known. Hence, this study investigates the outcomes of COCW water and vitamin C intake on the smooth muscle activity of the jejunum in Wistar rats using standard techniques. Data obtained showed that jejunal tissue SOD concentration was significantly reduced, while jejunal tissue MDA concentration was significantly increased in the COCW-only treated group. Contraction mediated by acetylcholine was significantly increased in the COCW-only treated rats. Calcium and potassium ion influx significantly increased jejunal contraction in the COCW-only rats. Incubation of the jejunal tissue in nifedipine, indomethacin, and L-NAME significantly increased acetylcholine-mediated contractions in the jejunal tissue of the COCW-only treated rats when compared to other groups. COCW causes free radical-induced jejunal damage that results in impaired jejunal contractile activity mediated by the M2 muscarinic receptor, nitric oxide synthase activity, voltage-gated large-conductance calcium channels, potassium channels, and prostaglandins. However, the oral intake of Vitamin C supplementation significantly ameliorated impairments by enhancing jejunal antioxidant activity.
尼日利亚尼日尔河三角洲农村石油社区的居民经常无意中饮用因该地区原油泄漏而受到原油污染的水（COCW）。在摄入 COCW 期间补充维生素 C 对空肠收缩机制的影响尚不完全清楚。因此，本研究采用标准技术调查了摄入 COCW 水和维生素 C 对 Wistar 大鼠空肠平滑肌活动的影响。数据显示，仅摄入 COCW 的大鼠空肠组织 SOD 浓度明显降低，而空肠组织 MDA 浓度明显升高。纯 COCW 处理组大鼠由乙酰胆碱介导的收缩明显增加。钙离子和钾离子的流入明显增加了纯 COCW 大鼠的空肠收缩。与其他组相比，用硝苯地平、吲哚美辛和 L-NAME 培养空肠组织可明显增加只用 COCW 处理的大鼠空肠组织由乙酰胆碱介导的收缩。慢性盲肠炎会引起自由基诱导的空肠损伤，导致由 M2 肌卡因受体、一氧化氮合酶活性、电压门控大电导钙通道、钾通道和前列腺素介导的空肠收缩活性受损。然而，口服维生素 C 补充剂可增强空肠抗氧化活性，从而明显改善空肠损伤。
{"title":"Oral Vitamin C Intake Ameliorates Crude Oil-Polluted Water-Induced Jejunal Contractile Dysfunctions in Wistar rats","authors":"S. A. Salami, A. J. Oyemakinde, M. O. Allen, H. Salahdeen, I. I. Olatunji-Bello, B. Murtala","doi":"10.4314/jasem.v27i11.26","DOIUrl":"https://doi.org/10.4314/jasem.v27i11.26","url":null,"abstract":"Inhabitants of rural Niger-Delta oil communities in Nigeria often, unintentionally, consume crude oil polluted water (COCW) due to crude oil spills in the region. The impact of vitamin C supplementation during COCW ingestion on the contractile mechanism of the jejunum is not fully known. Hence, this study investigates the outcomes of COCW water and vitamin C intake on the smooth muscle activity of the jejunum in Wistar rats using standard techniques. Data obtained showed that jejunal tissue SOD concentration was significantly reduced, while jejunal tissue MDA concentration was significantly increased in the COCW-only treated group. Contraction mediated by acetylcholine was significantly increased in the COCW-only treated rats. Calcium and potassium ion influx significantly increased jejunal contraction in the COCW-only rats. Incubation of the jejunal tissue in nifedipine, indomethacin, and L-NAME significantly increased acetylcholine-mediated contractions in the jejunal tissue of the COCW-only treated rats when compared to other groups. COCW causes free radical-induced jejunal damage that results in impaired jejunal contractile activity mediated by the M2 muscarinic receptor, nitric oxide synthase activity, voltage-gated large-conductance calcium channels, potassium channels, and prostaglandins. However, the oral intake of Vitamin C supplementation significantly ameliorated impairments by enhancing jejunal antioxidant activity.","PeriodicalId":15093,"journal":{"name":"Journal of Applied Sciences and Environmental Management","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139227850","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}
Garden egg, popularly known as eggplant, is one of the strange and enigmatic vegetable plants that can energize and heal the body as well as the spirit. It is a manifestation of the wonders of God’s creation and magnanimity. As recorded in the holy books, God made man and woman and told them to eat vegetables to keep their bodies and spirits healthy and together. Garden egg is one fruit that is highly acceptable and valued when offered to visitors. In Akabo, South eastern Nigeria, there is a practice called "Ofe", which translates to "garden eggplant mystics". It is a significant mystical practice that helps to maintain harmony among people and between bodies and spirits. In this study, the mystical, medicinal and economic implications of garden egg as applied in Akabo community are presented. Interview data and library databases were used to analyze the sources of information by theme. The origin, classes, and chemical composition of garden eggs as it affects its medicinal efficacy have been highlighted. Insights to the cultural significance of garden egg in Africa are also documented. The overall benefits of the various parts of the eggplant, viz: fruits, leaves, stems and roots and their economic importance to the global society have been presented. This study will serve as a useful piece to the global community to unravel the untapped potentials of garden egg.
{"title":"Garden Egg (Solanum aethiopicum) as a Mystical plant in Akabo, South Eastern Nigeria: Health and Economic Implications","authors":"E. Opara, G. A. Udourioh","doi":"10.4314/jasem.v27i11.38","DOIUrl":"https://doi.org/10.4314/jasem.v27i11.38","url":null,"abstract":"Garden egg, popularly known as eggplant, is one of the strange and enigmatic vegetable plants that can energize and heal the body as well as the spirit. It is a manifestation of the wonders of God’s creation and magnanimity. As recorded in the holy books, God made man and woman and told them to eat vegetables to keep their bodies and spirits healthy and together. Garden egg is one fruit that is highly acceptable and valued when offered to visitors. In Akabo, South eastern Nigeria, there is a practice called \"Ofe\", which translates to \"garden eggplant mystics\". It is a significant mystical practice that helps to maintain harmony among people and between bodies and spirits. In this study, the mystical, medicinal and economic implications of garden egg as applied in Akabo community are presented. Interview data and library databases were used to analyze the sources of information by theme. The origin, classes, and chemical composition of garden eggs as it affects its medicinal efficacy have been highlighted. Insights to the cultural significance of garden egg in Africa are also documented. The overall benefits of the various parts of the eggplant, viz: fruits, leaves, stems and roots and their economic importance to the global society have been presented. This study will serve as a useful piece to the global community to unravel the untapped potentials of garden egg.","PeriodicalId":15093,"journal":{"name":"Journal of Applied Sciences and Environmental Management","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139223639","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}
The socio-economic benefits derived from impounding rivers are extremely important but the ecological imbalances that are usually created in the process can be devastating. It is therefore imperative to understand some aspects of the biology of fishes before the impoundment of a river. This study was conducted to assess the length-weight relationship, condition factor, feeding, and reproductive ecology of fish species with high local market value. Biometric measurements were obtained from monthly samples of fish at two sites. Specimens were transported to the laboratory for gut and gonad analyses. Auchenoglanis occidentalis, Marcussenius senegalensis and Heterobranchus bidorsalis were the most preferred fish species. All three fish species recorded ‘b’ values less than 3 which implies they exhibited a negative allometric growth. Their condition factors (K) indicated they were in good health since K values were greater than 1. A. occidentalis and H. bidorsalis demonstrated a feeding habit comparable to that of an omnivore, whilst M. senegalensis presented a feeding habit that implied it was an invertivore. M. senegalensis registered the uppermost mean gonado-somatic index (GSI) (2.14 ± 0.83) whereas the highest mean fecundity (495 ± 450.96) was noted in A. occidentalis. This study contributed bio-ecological baseline information about the ichthyofauna prior to the damming of the reservoir in the Pwalugu area of the White Volta.
拦河蓄水带来的社会经济效益极其重要，但在此过程中通常会造成生态失衡，具有破坏性。因此，在河流蓄水之前了解鱼类生物学的某些方面势在必行。本研究旨在评估当地市场价值较高的鱼类物种的体长-体重关系、状态因子、摄食和繁殖生态。每月在两个地点采集鱼类样本，进行生物计量测量。标本被运送到实验室进行肠道和性腺分析。Auchenoglanis occidentalis、Marcussenius senegalensis 和 Heterobranchus bidorsalis 是最受欢迎的鱼种。这三种鱼的 "b "值均小于 3，这意味着它们呈现负异速生长。它们的条件因子（K）表明它们的健康状况良好，因为 K 值大于 1。A occidentalis 和 H. bidorsalis 的摄食习性类似于杂食动物，而 M. senegalensis 的摄食习性则表明它是一种无脊椎动物。M.senegalensis的平均性腺指数（GSI）最高（2.14 ± 0.83），而A. occidentalis的平均繁殖力最高（495 ± 450.96）。这项研究为白沃尔特省普瓦卢古地区水库筑坝前的鱼类提供了生物生态基线信息。
{"title":"Biological Aspects of Preferred Fish Species in White Volta at Pwalugu, Ghana: A pre-impoundment Study","authors":"D. N. Akongyuure, M. A. Adakpeya, E. H. Alhassan","doi":"10.4314/jasem.v27i11.10","DOIUrl":"https://doi.org/10.4314/jasem.v27i11.10","url":null,"abstract":"The socio-economic benefits derived from impounding rivers are extremely important but the ecological imbalances that are usually created in the process can be devastating. It is therefore imperative to understand some aspects of the biology of fishes before the impoundment of a river. This study was conducted to assess the length-weight relationship, condition factor, feeding, and reproductive ecology of fish species with high local market value. Biometric measurements were obtained from monthly samples of fish at two sites. Specimens were transported to the laboratory for gut and gonad analyses. Auchenoglanis occidentalis, Marcussenius senegalensis and Heterobranchus bidorsalis were the most preferred fish species. All three fish species recorded ‘b’ values less than 3 which implies they exhibited a negative allometric growth. Their condition factors (K) indicated they were in good health since K values were greater than 1. A. occidentalis and H. bidorsalis demonstrated a feeding habit comparable to that of an omnivore, whilst M. senegalensis presented a feeding habit that implied it was an invertivore. M. senegalensis registered the uppermost mean gonado-somatic index (GSI) (2.14 ± 0.83) whereas the highest mean fecundity (495 ± 450.96) was noted in A. occidentalis. This study contributed bio-ecological baseline information about the ichthyofauna prior to the damming of the reservoir in the Pwalugu area of the White Volta.","PeriodicalId":15093,"journal":{"name":"Journal of Applied Sciences and Environmental Management","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139225023","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}
O. A. Ogidan, A. F. Aderounmu, A. A. Ekaun, O. A. Ogundana, R. T. Afolabi
Having information about the existing stands and their structure within a forest is important, as it helps in understanding the biodiversity depth and climate change adaptation potential. Therefore, the objective of this study was to assess the growth characteristics, diversity and structure of tree species in the Opara Forest Reserve on the Nigeria-Benin Republic Fringes in Oyo State, Southwest Nigeria using appropriate standard techniques. A total of 218 trees were enumerated and assessed. The results indicated that the forest reserve is primarily characterized by the prevalence of savanna species. The dominant species within the study area consists of 80 stands of Anogeissus leiocarpus; Vitellaria paradoxa exhibits the highest mean diameter at breast height (dbh), measuring 100.09 cm and Acacia faidherbia had highest value in height. The forest reserve is characterised by the dominance of trees within the 6-10 metre height range. In conclusion, the forest reserve exhibits a moderate level of species variety with favourable growth characteristics and the average height of the trees are typical of a savanna forest.
{"title":"Assessment of Growth Characteristics, Diversity and Structure of Tree Species in Opara Forest Reserve, Oyo State, Southwest Nigeria","authors":"O. A. Ogidan, A. F. Aderounmu, A. A. Ekaun, O. A. Ogundana, R. T. Afolabi","doi":"10.4314/jasem.v27i11.31","DOIUrl":"https://doi.org/10.4314/jasem.v27i11.31","url":null,"abstract":"Having information about the existing stands and their structure within a forest is important, as it helps in understanding the biodiversity depth and climate change adaptation potential. Therefore, the objective of this study was to assess the growth characteristics, diversity and structure of tree species in the Opara Forest Reserve on the Nigeria-Benin Republic Fringes in Oyo State, Southwest Nigeria using appropriate standard techniques. A total of 218 trees were enumerated and assessed. The results indicated that the forest reserve is primarily characterized by the prevalence of savanna species. The dominant species within the study area consists of 80 stands of Anogeissus leiocarpus; Vitellaria paradoxa exhibits the highest mean diameter at breast height (dbh), measuring 100.09 cm and Acacia faidherbia had highest value in height. The forest reserve is characterised by the dominance of trees within the 6-10 metre height range. In conclusion, the forest reserve exhibits a moderate level of species variety with favourable growth characteristics and the average height of the trees are typical of a savanna forest.","PeriodicalId":15093,"journal":{"name":"Journal of Applied Sciences and Environmental Management","volume":"56 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139227390","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}
A. F. Tijjani, B. Alhassan, U. Salisu, A. M. Hassan
Groundwater is an important source of drinking water and the protection of groundwater is a major environmental issue as the importance of water quality to human health. Hence, the objective of this study was to assess the groundwater quality around dumpsites in Bauchi metropolis, Bauchi State, Nigeria using standard analytical techniques and multivariate statistical analysis methods such as correlation analysis (CA), principal component analysis (PCA), and hierarchical cluster analysis (HCA). The mean concentration of the parameters in ground water samples ranged from pH 7.55 to 9.06, temperature 32.55 to 34.25 oC, conductivity 54.80 to 65.38 μS/cm, salinity 0.20 to 0.29 mg/L, TSS 0.36 to 1.93 mg/L, TDS 57.53 to 59.95 mg/L, HCO3 26.80 to 31.00 mg/L, PO43- 1.05 to 2.06 mg/L, SO42- 2.25 to 3.26 mg/L, NO3- 1.40 to 4.50 mg/L, NO2- 0.01 to 0.03 mg/L, and Cl- 2.14 to 8.31 mg/L. The result shows that the investigated parameters were below the WHO, permissible limit, except PO43-. The concentration of the parameters were in following trend; TDS > conductivity > temperature > HCO3> pH > NO3> SO4>Cl> PO4> TSS > salinity > NO2. Multivariate analysis revealed that the main sources of water quality parameters might be related to dumpsites around the study area. According to the HCA, and PCA, the parameters were divided into three groups; the first group correlated with Salinity, TSS, SO4, NO3 and NO2; the second group correlated with TDS and HCO3, and the third with pH, temperature, and conductivity. The hydrochemistry of groundwater from the area reveals that the water could be applied to irrigation.
{"title":"Multivariate Statistical Analysis for Assessment of Groundwater Quality around Dumpsites in Bauchi metropolis, Bauchi State, Nigeria","authors":"A. F. Tijjani, B. Alhassan, U. Salisu, A. M. Hassan","doi":"10.4314/jasem.v27i11.21","DOIUrl":"https://doi.org/10.4314/jasem.v27i11.21","url":null,"abstract":"Groundwater is an important source of drinking water and the protection of groundwater is a major environmental issue as the importance of water quality to human health. Hence, the objective of this study was to assess the groundwater quality around dumpsites in Bauchi metropolis, Bauchi State, Nigeria using standard analytical techniques and multivariate statistical analysis methods such as correlation analysis (CA), principal component analysis (PCA), and hierarchical cluster analysis (HCA). The mean concentration of the parameters in ground water samples ranged from pH 7.55 to 9.06, temperature 32.55 to 34.25 oC, conductivity 54.80 to 65.38 μS/cm, salinity 0.20 to 0.29 mg/L, TSS 0.36 to 1.93 mg/L, TDS 57.53 to 59.95 mg/L, HCO3 26.80 to 31.00 mg/L, PO43- 1.05 to 2.06 mg/L, SO42- 2.25 to 3.26 mg/L, NO3- 1.40 to 4.50 mg/L, NO2- 0.01 to 0.03 mg/L, and Cl- 2.14 to 8.31 mg/L. The result shows that the investigated parameters were below the WHO, permissible limit, except PO43-. The concentration of the parameters were in following trend; TDS > conductivity > temperature > HCO3> pH > NO3> SO4>Cl> PO4> TSS > salinity > NO2. Multivariate analysis revealed that the main sources of water quality parameters might be related to dumpsites around the study area. According to the HCA, and PCA, the parameters were divided into three groups; the first group correlated with Salinity, TSS, SO4, NO3 and NO2; the second group correlated with TDS and HCO3, and the third with pH, temperature, and conductivity. The hydrochemistry of groundwater from the area reveals that the water could be applied to irrigation.","PeriodicalId":15093,"journal":{"name":"Journal of Applied Sciences and Environmental Management","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139217313","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}
P. A. Akinyemi, O. A. Adebesin, O. M. Arotiba, A. Adewole, J. E. Okpuzor
Alzheimer disease (AD) is a neurodegenerative disorder that affect memory and cognitive function. Currently, the available agents used in managing this condition are associated with severe side effects and have limited efficacy in reducing or modulating events associated with AD. Hence, there is a need for an alternative therapy with fewer side effects and better efficacy. Strophantus hispidus (SH) is a plant product widely used in Africa for its therapeutic potential. This study was conducted to assess the bioactive constituent of the SH extract fractions, as well as the cytotoxic potential of these fractions. The root of SH was pulverized and extracted with 80% methanol. The crude extract was then fractionated with Chloroform, Hexane, and Ethylacetate. The extract and fractions were then subjected to Gas Chromatography-Mass Spectrometry (GC-MS). SH-SY5Y cell line model of AD was treated with graded concentrations (9.77 – 5000 µg/mL) of the SH extract and fractions for 24 hours. Cell viability assay was performed using WST-8 proliferation assay. The EC50 was determined to be 48.4 μg/mL, 15.16 μg/mL, and 151 μg/mL for cells treated with Chloroform, Ethylacetate, and Hexane fractions of Strophantus hispidus respectively. The selectivity index (SI) greater than 3 of the hexane and ethylacetate fractions were determined to be safe, less toxic, and effective in improving cellular growth.
{"title":"Bioactive And Cytotoxic Potentials of the Extract Fractions of Strophanthus Hispidus on Neuroblastoma (SH-SY5Y) Cell Line Model of Alzheimer’s Disease","authors":"P. A. Akinyemi, O. A. Adebesin, O. M. Arotiba, A. Adewole, J. E. Okpuzor","doi":"10.4314/jasem.v27i11.36","DOIUrl":"https://doi.org/10.4314/jasem.v27i11.36","url":null,"abstract":"Alzheimer disease (AD) is a neurodegenerative disorder that affect memory and cognitive function. Currently, the available agents used in managing this condition are associated with severe side effects and have limited efficacy in reducing or modulating events associated with AD. Hence, there is a need for an alternative therapy with fewer side effects and better efficacy. Strophantus hispidus (SH) is a plant product widely used in Africa for its therapeutic potential. This study was conducted to assess the bioactive constituent of the SH extract fractions, as well as the cytotoxic potential of these fractions. The root of SH was pulverized and extracted with 80% methanol. The crude extract was then fractionated with Chloroform, Hexane, and Ethylacetate. The extract and fractions were then subjected to Gas Chromatography-Mass Spectrometry (GC-MS). SH-SY5Y cell line model of AD was treated with graded concentrations (9.77 – 5000 µg/mL) of the SH extract and fractions for 24 hours. Cell viability assay was performed using WST-8 proliferation assay. The EC50 was determined to be 48.4 μg/mL, 15.16 μg/mL, and 151 μg/mL for cells treated with Chloroform, Ethylacetate, and Hexane fractions of Strophantus hispidus respectively. The selectivity index (SI) greater than 3 of the hexane and ethylacetate fractions were determined to be safe, less toxic, and effective in improving cellular growth.","PeriodicalId":15093,"journal":{"name":"Journal of Applied Sciences and Environmental Management","volume":"57 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139225980","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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