Azo dyes have received considerable attention because of their association with various human health problems. The aim of the investigation is to determine the adsorption behavior ofazo dyes in aqueous solution on DG0...Azo dyes have received considerable attention because of their association with various human health problems. The aim of the investigation is to determine the adsorption behavior ofazo dyes in aqueous solution on DG06, GSE17200, and GSE17201 soils using C. I. Acid Red 14 （AR14） as example. The experimental results indicate that the Freundlich model expresses the adsorption isotherm better than the Langmuir model and the pseudo-second-order model achieves adsorption of AR14 on the three soils well. Based on the pseudo-second-order model, the adsorption thermodynamic of AR14 on DG06 soil have been studied and the thermodynamics parameter of AGO is determined and AGO value shows the adsorption process of AR14 on DG06 is mainly physical in nature. Furthermore, the effects of temperature, pH and salinity （NaC1） on adsorption have been investigated. The decrease in pH or the increase in salinity enhances the adsorption of AR14 by DG06, GSE17200, and GSE17201.展开更多
Dyes are common pollutants in textile wastewaters, and the treatment of the wastewater has now attracted much attention due to its wide application and low biodegradability. In this study, Fe^0/C/Clay ceramics, a kind...Dyes are common pollutants in textile wastewaters, and the treatment of the wastewater has now attracted much attention due to its wide application and low biodegradability. In this study, Fe^0/C/Clay ceramics, a kind of novel micro-electrolysis filler, were sintered and employed in a dynamic micro-electrolysis reactor for synthetic Acid Red 73 （AR73） and Reactive Blue 4 （RB4） wastewater treatment. The effects ofinfluent pH, hydraulic retention time （HRT）, and aeration on the decoloration efficiencies of AR73 and RB4 were studied. The optimum conditions for wastewater treatment were： AR73, influent pH of 4, HRT of 2 h and aeration; RB4, influent pH of 5, HRT of 6 h and aeration. Under the optimum conditions, decoloration efficiency of AR73 and RB4 wastewater was 96% and 83%, respectively. Results of UV-vis spectrum scanning demonstrated that the chromophores were broken. Continuous running tests showed that improvement of micro-electrolysis system with Fe^0/C/Clay ceramics for AR73 and RB4 synthetic wastewater treatment could avoid failure of micro-electrolysis reactor, which indicated great potential for the practical application of the ceramics in the field of actual industrial wastewater treatment.展开更多
目的探讨单核细胞/高密度脂蛋白胆固醇比值(monocyte to high density lipoprotein cholesterol,MHR)、红细胞分布宽度(red blood cell distribution width,RDW)、尿酸(Serum uric acid,SUA)与冠心病(Coronary heart disease,CHD)患者...目的探讨单核细胞/高密度脂蛋白胆固醇比值(monocyte to high density lipoprotein cholesterol,MHR)、红细胞分布宽度(red blood cell distribution width,RDW)、尿酸(Serum uric acid,SUA)与冠心病(Coronary heart disease,CHD)患者冠状动脉病变严重程度的相关性。方法纳入2022年2月至2023年2月于我院收治的358例患者,分为正常对照组(n=70)和冠心病组(n=288),冠心病组根据Gensini积分结果进一步分为轻度狭窄组、中度狭窄组、重度狭窄组3个亚组,比较各组一般资料和MHR、RDW、SUA水平的差异,并进行Logistic回归评价MHR、RDW、SUA与不同冠状动脉狭窄程度相关性,绘制受试者工作特征(ROC)曲线分析MHR、RDW、SUA对冠状动脉狭窄程度的临床诊断价值。结果3亚组高密度脂蛋白胆固醇(high density lipoprotein cholesterol,HDL-C)、MHR、RDW、SUA比较差异均有统计学意义(P<0.05),Spearman相关性分析显示,3亚组MHR、RDW、SUA水平与冠状动脉狭窄程度呈正相关(P<0.05),HDL-C水平与冠状动脉狭窄程度呈负相关(P<0.05);Logistic回归分析显示,MHR、RDW、SUA均是冠心病患者冠状动脉病变严重程度的独立危险因素。(P<0.05)。ROC曲线分析显示,MHR、RDW、SUA预测冠状动脉病变严重程度的曲线下边面积(AUC)分别为0.611、0.778、0.769。结论在冠心病患者中,MHR、RDW、SUA水平均是冠状动脉病变严重程度的独立危险因素。展开更多
文摘Azo dyes have received considerable attention because of their association with various human health problems. The aim of the investigation is to determine the adsorption behavior ofazo dyes in aqueous solution on DG06, GSE17200, and GSE17201 soils using C. I. Acid Red 14 （AR14） as example. The experimental results indicate that the Freundlich model expresses the adsorption isotherm better than the Langmuir model and the pseudo-second-order model achieves adsorption of AR14 on the three soils well. Based on the pseudo-second-order model, the adsorption thermodynamic of AR14 on DG06 soil have been studied and the thermodynamics parameter of AGO is determined and AGO value shows the adsorption process of AR14 on DG06 is mainly physical in nature. Furthermore, the effects of temperature, pH and salinity （NaC1） on adsorption have been investigated. The decrease in pH or the increase in salinity enhances the adsorption of AR14 by DG06, GSE17200, and GSE17201.
文摘Dyes are common pollutants in textile wastewaters, and the treatment of the wastewater has now attracted much attention due to its wide application and low biodegradability. In this study, Fe^0/C/Clay ceramics, a kind of novel micro-electrolysis filler, were sintered and employed in a dynamic micro-electrolysis reactor for synthetic Acid Red 73 （AR73） and Reactive Blue 4 （RB4） wastewater treatment. The effects ofinfluent pH, hydraulic retention time （HRT）, and aeration on the decoloration efficiencies of AR73 and RB4 were studied. The optimum conditions for wastewater treatment were： AR73, influent pH of 4, HRT of 2 h and aeration; RB4, influent pH of 5, HRT of 6 h and aeration. Under the optimum conditions, decoloration efficiency of AR73 and RB4 wastewater was 96% and 83%, respectively. Results of UV-vis spectrum scanning demonstrated that the chromophores were broken. Continuous running tests showed that improvement of micro-electrolysis system with Fe^0/C/Clay ceramics for AR73 and RB4 synthetic wastewater treatment could avoid failure of micro-electrolysis reactor, which indicated great potential for the practical application of the ceramics in the field of actual industrial wastewater treatment.
文摘目的探讨单核细胞/高密度脂蛋白胆固醇比值(monocyte to high density lipoprotein cholesterol,MHR)、红细胞分布宽度(red blood cell distribution width,RDW)、尿酸(Serum uric acid,SUA)与冠心病(Coronary heart disease,CHD)患者冠状动脉病变严重程度的相关性。方法纳入2022年2月至2023年2月于我院收治的358例患者,分为正常对照组(n=70)和冠心病组(n=288),冠心病组根据Gensini积分结果进一步分为轻度狭窄组、中度狭窄组、重度狭窄组3个亚组,比较各组一般资料和MHR、RDW、SUA水平的差异,并进行Logistic回归评价MHR、RDW、SUA与不同冠状动脉狭窄程度相关性,绘制受试者工作特征(ROC)曲线分析MHR、RDW、SUA对冠状动脉狭窄程度的临床诊断价值。结果3亚组高密度脂蛋白胆固醇(high density lipoprotein cholesterol,HDL-C)、MHR、RDW、SUA比较差异均有统计学意义(P<0.05),Spearman相关性分析显示,3亚组MHR、RDW、SUA水平与冠状动脉狭窄程度呈正相关(P<0.05),HDL-C水平与冠状动脉狭窄程度呈负相关(P<0.05);Logistic回归分析显示,MHR、RDW、SUA均是冠心病患者冠状动脉病变严重程度的独立危险因素。(P<0.05)。ROC曲线分析显示,MHR、RDW、SUA预测冠状动脉病变严重程度的曲线下边面积(AUC)分别为0.611、0.778、0.769。结论在冠心病患者中,MHR、RDW、SUA水平均是冠状动脉病变严重程度的独立危险因素。
