Water quality index has been used in various researches for the assessment of water quality for various uses and discharges into the environment. The purpose of this study was to determine the water quality index of t...Water quality index has been used in various researches for the assessment of water quality for various uses and discharges into the environment. The purpose of this study was to determine the water quality index of the effluent from waste stabilisation ponds and 400 m beyond discharge point. This was achieved by evaluating concentrations of seven parameters from soil, eleven physiochemical parameters from effluent and four microbiological parameters. Corresponding water quality indices calculated from microbiological parameters were 854, 142, 96 and 1539 respectively, at sites 1, 2, 3 and 4. Reductions of magnesium, zinc, lead, sodium adsorption ratio, sodium and electrical conductivity in soil samples at site 4 were 15.5%, 57%, 81.6%, 93.5%, 93.5% and 99% respectively. The percentage increases were 21.4% and 185% respectively, for calcium and iron ions. It can be concluded that the water quality index of the waste stabilisation ponds is unsuitable for discharge into the environment. However, the results revealed improved quality downstream of discharge point.展开更多
Dump sites pose a significant threat to groundwater resources due to the possibility of leachate leakage into the aquifer.This study investigated the impact of leachate on groundwater quality in the southwest region o...Dump sites pose a significant threat to groundwater resources due to the possibility of leachate leakage into the aquifer.This study investigated the impact of leachate on groundwater quality in the southwest region of Zanjan City,Iran,where groundwater is utilized for drinking,agricultural,and industrial purposes.We analyzed 18 parameters of dump site leachate,including physicochemical,heavy metals,and bacterial properties,alongside 13 groundwater samples.Sampling was conducted twice,in November 2020 and June 2021,within a five-kilometer radius of the Zanjan dump site.We utilized the Leachate Pollution Index(LPI)to evaluate potential groundwater contamination by leachate leakage from nearby dumpsite.Additionally,due to the predominant agricultural activities in the study area,various indices were employed to assess groundwater quality for agricultural purposes,such as Sodium Adsorption Ratio(SAR),Soluble Sodium Index(SSI),Kelly Ratio(KR),and Permeability Index(PI).Our analysis revealed no observed contamination related to leachate in the study area according to the LPI results.However,with the persistent pollution threat,implementing sanitary measures at the dump site is crucial to prevent potential impacts on groundwater quality.Moreover,the assessment of groundwater quality adequacy for irrigation yielded satisfactory results for SAR,KR,and PI indices.However,during both the dry(November 2020)and wet seasons(June 2021),the SSP index indicated that 80%of the samples were not classified as excellent,suggesting groundwater may not be suitable for agriculture.Overal,our qualitative study highlights the significant impact of the dry season on groundwater quality in the study area,attributed to elevated concentration levels of the investigated parameters within groundwater sources during the dry season.展开更多
目的观察补肾壮骨冲剂对老年男性骨质疏松症(osteoporosis,OP)患者疼痛视觉评分、生存质量、骨代谢指标、骨密度的影响,进行临床规范综合疗效分析。方法将符合世界卫生组织(World Health Organization,WHO)诊断标准、接受药物治疗的898...目的观察补肾壮骨冲剂对老年男性骨质疏松症(osteoporosis,OP)患者疼痛视觉评分、生存质量、骨代谢指标、骨密度的影响,进行临床规范综合疗效分析。方法将符合世界卫生组织(World Health Organization,WHO)诊断标准、接受药物治疗的898例OP患者,随机分为补肾壮骨冲剂组442例、阿仑膦酸钠组456例,随访时间为1年。调查疼痛程度、生存质量;分析血清中总Ⅰ型胶原氨基端前肽(procollagen I N-terminal peptide,PINP)、β-胶原降解产物(β-Crosslaps)的含量、测量骨密度。2组间及治疗前后指标进行统计学处理。结果 2组患者治疗后6个月、1年与治疗前视觉模拟评分法(visual analogue scale,VAS)的评分、生存质量、PINP及β-Crosslaps值下降、骨密度增加等差异均有统计学差异(P<0.05)。2组患者治疗后6个月、1年同期相关数据比较无统计学差异(P>0.05)。结论补肾壮骨冲剂中药与阿仑膦酸钠西药治疗骨质疏松对缓解症状、改善功能、提高生活质量方面有一定疗效,能调整骨代谢指标,提高骨密度。展开更多
文摘Water quality index has been used in various researches for the assessment of water quality for various uses and discharges into the environment. The purpose of this study was to determine the water quality index of the effluent from waste stabilisation ponds and 400 m beyond discharge point. This was achieved by evaluating concentrations of seven parameters from soil, eleven physiochemical parameters from effluent and four microbiological parameters. Corresponding water quality indices calculated from microbiological parameters were 854, 142, 96 and 1539 respectively, at sites 1, 2, 3 and 4. Reductions of magnesium, zinc, lead, sodium adsorption ratio, sodium and electrical conductivity in soil samples at site 4 were 15.5%, 57%, 81.6%, 93.5%, 93.5% and 99% respectively. The percentage increases were 21.4% and 185% respectively, for calcium and iron ions. It can be concluded that the water quality index of the waste stabilisation ponds is unsuitable for discharge into the environment. However, the results revealed improved quality downstream of discharge point.
文摘Dump sites pose a significant threat to groundwater resources due to the possibility of leachate leakage into the aquifer.This study investigated the impact of leachate on groundwater quality in the southwest region of Zanjan City,Iran,where groundwater is utilized for drinking,agricultural,and industrial purposes.We analyzed 18 parameters of dump site leachate,including physicochemical,heavy metals,and bacterial properties,alongside 13 groundwater samples.Sampling was conducted twice,in November 2020 and June 2021,within a five-kilometer radius of the Zanjan dump site.We utilized the Leachate Pollution Index(LPI)to evaluate potential groundwater contamination by leachate leakage from nearby dumpsite.Additionally,due to the predominant agricultural activities in the study area,various indices were employed to assess groundwater quality for agricultural purposes,such as Sodium Adsorption Ratio(SAR),Soluble Sodium Index(SSI),Kelly Ratio(KR),and Permeability Index(PI).Our analysis revealed no observed contamination related to leachate in the study area according to the LPI results.However,with the persistent pollution threat,implementing sanitary measures at the dump site is crucial to prevent potential impacts on groundwater quality.Moreover,the assessment of groundwater quality adequacy for irrigation yielded satisfactory results for SAR,KR,and PI indices.However,during both the dry(November 2020)and wet seasons(June 2021),the SSP index indicated that 80%of the samples were not classified as excellent,suggesting groundwater may not be suitable for agriculture.Overal,our qualitative study highlights the significant impact of the dry season on groundwater quality in the study area,attributed to elevated concentration levels of the investigated parameters within groundwater sources during the dry season.
文摘目的观察补肾壮骨冲剂对老年男性骨质疏松症(osteoporosis,OP)患者疼痛视觉评分、生存质量、骨代谢指标、骨密度的影响,进行临床规范综合疗效分析。方法将符合世界卫生组织(World Health Organization,WHO)诊断标准、接受药物治疗的898例OP患者,随机分为补肾壮骨冲剂组442例、阿仑膦酸钠组456例,随访时间为1年。调查疼痛程度、生存质量;分析血清中总Ⅰ型胶原氨基端前肽(procollagen I N-terminal peptide,PINP)、β-胶原降解产物(β-Crosslaps)的含量、测量骨密度。2组间及治疗前后指标进行统计学处理。结果 2组患者治疗后6个月、1年与治疗前视觉模拟评分法(visual analogue scale,VAS)的评分、生存质量、PINP及β-Crosslaps值下降、骨密度增加等差异均有统计学差异(P<0.05)。2组患者治疗后6个月、1年同期相关数据比较无统计学差异(P>0.05)。结论补肾壮骨冲剂中药与阿仑膦酸钠西药治疗骨质疏松对缓解症状、改善功能、提高生活质量方面有一定疗效,能调整骨代谢指标,提高骨密度。
