The decolorization of reactive blue 19(RB-19)as a model dye from aqueous solutions has been studied by means of the dielectric barrier discharge(DBD)process.The independent parameters of input power,initial dye concen...The decolorization of reactive blue 19(RB-19)as a model dye from aqueous solutions has been studied by means of the dielectric barrier discharge(DBD)process.The independent parameters of input power,initial dye concentration and initial pH value were evaluated respectively.Experimental data were optimized by means of a 33 factorial design and response surface methodology(RSM).The dye was quickly removed during the treatment,yielding 96.9%of decolorization efficiency under optimized conditions.Therefore,the total organic carbon(TOC)and chemical oxygen demand(CODcr)results indicated that only the chromophore was destroyed rather than completed oxidation.This was confirmed with UV-vis and tertiary butanol assessments during the DBD treatment.展开更多
The photocatalytic degradation of reactive blue 19(RB19)dye was investigated in a slurry system using ultraviolet(UV)and light-emitting diode(LED)lamps as light sources and using magnetic tungsten trioxide nanophotoca...The photocatalytic degradation of reactive blue 19(RB19)dye was investigated in a slurry system using ultraviolet(UV)and light-emitting diode(LED)lamps as light sources and using magnetic tungsten trioxide nanophotocatalysts(α-Fe_(2)O_(3)/WO_(3)and WO_(3)/NaOH)as photocatalysts.The effects of different parameters including irradiation time,initial concentration of RB19,nanophotocatalyst dosage,and pH were examined.The magnetic nanophotocatalysts were also characterized with different methods including scanning electron microscopy(SEM),energy-dispersive X-ray spectroscopy(EDS),transmission electron microscopy(TEM),X-ray diffraction(XRD),photoluminescence(PL),differen-tial reflectance spectroscopy(DRS),Fourier transform infrared spectroscopy(FTIR),and vibrating sample magnetometry(VSM).The XRD and FTIR analyses confirmed the presence of tungsten trioxide on the iron oxide nanoparticles.The VSM analysis confirmed the magnetic ability of the new synthesized nanophotocatalyst α-Fe_(2)O_(3)/WO_(3)with 39.6 emu/g of saturation magnetization.The reactor performance showed consid-erable improvement in the α-Fe_(2)O_(3)-modified nanophotocatalyst.The impact of visible light was specifically investigated,and it was compared with UV-C light under the same experimental conditions.The reusability of the magnetic nanophotocatalyst α-Fe_(2)O_(3)/WO_(3)was tested during six cycles,and the magnetic materials showed an excellent removal efficiency after six cycles,with just a 7%decline.展开更多
The solubility of C.I. reactive blue 19 in aqueous alkali is poor, so it isn't used to dye cellulosic fiber in cold pad-batch dyeing. In order to improve the solubility of this dyestuff in alkali liquor, the right...The solubility of C.I. reactive blue 19 in aqueous alkali is poor, so it isn't used to dye cellulosic fiber in cold pad-batch dyeing. In order to improve the solubility of this dyestuff in alkali liquor, the right dispersants will be needed. A series of condensates are synthesized by changing the synthesis conditions such as the ratio of naphthalenesulfonic (N) to formaldehyde (F), acidity, and their compositions are confirmed by MS spectrum. It is found that in acidity scope of 20%-24% and the ratio of N to F 1∶0.33, the synthesized condensates can efficiently improve the solubility of C.I. reactive blue 19 in alkali liquor. In addition, the influences of the condensates on the exhaust dyeing and the cold pad-batch dyeing are tested.展开更多
目的分析角蛋白19、C反应蛋白、白蛋白检测对结直肠癌术后的临床疗效以及预测价值。方法以新疆维吾尔自治区人民医院2021年1月—2022年1月收治的98例患者为研究对象。对比临床治疗前后疗效及预后下的角蛋白19、C反应蛋白、白蛋白检测水...目的分析角蛋白19、C反应蛋白、白蛋白检测对结直肠癌术后的临床疗效以及预测价值。方法以新疆维吾尔自治区人民医院2021年1月—2022年1月收治的98例患者为研究对象。对比临床治疗前后疗效及预后下的角蛋白19、C反应蛋白、白蛋白检测水平,通过受试者工作特征(receiveroperating characteristic,ROC)曲线评估其临床预估价值。结果治疗后,患者的角蛋白19、C反应蛋白、白蛋白水平均较治疗前下降,差异有统计学意义(P<0.05)。疗效良好组在角蛋白19、C反应蛋白水平上低于疗效欠佳组,白蛋白高于疗效欠佳组,差异有统计学意义(P<0.05)。存活组在角蛋白19、C反应蛋白水平上低于死亡组,白蛋白高于死亡组,差异有统计学意义(P<0.05)。基于ROC曲线,角蛋白19、C反应蛋白、白蛋白在最佳截断曲线下面积(area under the curve,AUC)值分别为0.822、0.921、0.899,均超过0.7,对直肠癌不良预后有预测价值。3项指标联合检测的敏感度、特异度、AUC值与约登指数均高于3项指标单一检测,差异有统计学意义(P<0.05)。结论角蛋白19、C反应蛋白、白蛋白检测能够有效预测结直肠癌患者疗效变化及预后。展开更多
以C.I.Reactive Red 241、C.I.Disperse Blue 56模拟染料废水为对象,研究了电解法处理该类染料废水的优化条件。考察了起始电压、电解时间、溶液初始p H对处理效果的影响。结果表明,在p H=7,U=14V、I=3.2A、t=30min的条件下,C.I.Reactiv...以C.I.Reactive Red 241、C.I.Disperse Blue 56模拟染料废水为对象,研究了电解法处理该类染料废水的优化条件。考察了起始电压、电解时间、溶液初始p H对处理效果的影响。结果表明,在p H=7,U=14V、I=3.2A、t=30min的条件下,C.I.Reactive Red241模拟染料废水的脱色率可达到86%以上;在p H=7,U=14V、I=3.2A、t=25min的条件下,C.I.Disperse Blue 56模拟染料废水的脱色率可达到79以上%。展开更多
基金Key Scientific and Technological Project of Henan Province,China(No.162102210084)
文摘The decolorization of reactive blue 19(RB-19)as a model dye from aqueous solutions has been studied by means of the dielectric barrier discharge(DBD)process.The independent parameters of input power,initial dye concentration and initial pH value were evaluated respectively.Experimental data were optimized by means of a 33 factorial design and response surface methodology(RSM).The dye was quickly removed during the treatment,yielding 96.9%of decolorization efficiency under optimized conditions.Therefore,the total organic carbon(TOC)and chemical oxygen demand(CODcr)results indicated that only the chromophore was destroyed rather than completed oxidation.This was confirmed with UV-vis and tertiary butanol assessments during the DBD treatment.
基金The work was supported by the Fund of Kharazmi University(Grant No.22073).
文摘The photocatalytic degradation of reactive blue 19(RB19)dye was investigated in a slurry system using ultraviolet(UV)and light-emitting diode(LED)lamps as light sources and using magnetic tungsten trioxide nanophotocatalysts(α-Fe_(2)O_(3)/WO_(3)and WO_(3)/NaOH)as photocatalysts.The effects of different parameters including irradiation time,initial concentration of RB19,nanophotocatalyst dosage,and pH were examined.The magnetic nanophotocatalysts were also characterized with different methods including scanning electron microscopy(SEM),energy-dispersive X-ray spectroscopy(EDS),transmission electron microscopy(TEM),X-ray diffraction(XRD),photoluminescence(PL),differen-tial reflectance spectroscopy(DRS),Fourier transform infrared spectroscopy(FTIR),and vibrating sample magnetometry(VSM).The XRD and FTIR analyses confirmed the presence of tungsten trioxide on the iron oxide nanoparticles.The VSM analysis confirmed the magnetic ability of the new synthesized nanophotocatalyst α-Fe_(2)O_(3)/WO_(3)with 39.6 emu/g of saturation magnetization.The reactor performance showed consid-erable improvement in the α-Fe_(2)O_(3)-modified nanophotocatalyst.The impact of visible light was specifically investigated,and it was compared with UV-C light under the same experimental conditions.The reusability of the magnetic nanophotocatalyst α-Fe_(2)O_(3)/WO_(3)was tested during six cycles,and the magnetic materials showed an excellent removal efficiency after six cycles,with just a 7%decline.
文摘The solubility of C.I. reactive blue 19 in aqueous alkali is poor, so it isn't used to dye cellulosic fiber in cold pad-batch dyeing. In order to improve the solubility of this dyestuff in alkali liquor, the right dispersants will be needed. A series of condensates are synthesized by changing the synthesis conditions such as the ratio of naphthalenesulfonic (N) to formaldehyde (F), acidity, and their compositions are confirmed by MS spectrum. It is found that in acidity scope of 20%-24% and the ratio of N to F 1∶0.33, the synthesized condensates can efficiently improve the solubility of C.I. reactive blue 19 in alkali liquor. In addition, the influences of the condensates on the exhaust dyeing and the cold pad-batch dyeing are tested.
文摘目的分析角蛋白19、C反应蛋白、白蛋白检测对结直肠癌术后的临床疗效以及预测价值。方法以新疆维吾尔自治区人民医院2021年1月—2022年1月收治的98例患者为研究对象。对比临床治疗前后疗效及预后下的角蛋白19、C反应蛋白、白蛋白检测水平,通过受试者工作特征(receiveroperating characteristic,ROC)曲线评估其临床预估价值。结果治疗后,患者的角蛋白19、C反应蛋白、白蛋白水平均较治疗前下降,差异有统计学意义(P<0.05)。疗效良好组在角蛋白19、C反应蛋白水平上低于疗效欠佳组,白蛋白高于疗效欠佳组,差异有统计学意义(P<0.05)。存活组在角蛋白19、C反应蛋白水平上低于死亡组,白蛋白高于死亡组,差异有统计学意义(P<0.05)。基于ROC曲线,角蛋白19、C反应蛋白、白蛋白在最佳截断曲线下面积(area under the curve,AUC)值分别为0.822、0.921、0.899,均超过0.7,对直肠癌不良预后有预测价值。3项指标联合检测的敏感度、特异度、AUC值与约登指数均高于3项指标单一检测,差异有统计学意义(P<0.05)。结论角蛋白19、C反应蛋白、白蛋白检测能够有效预测结直肠癌患者疗效变化及预后。
文摘以C.I.Reactive Red 241、C.I.Disperse Blue 56模拟染料废水为对象,研究了电解法处理该类染料废水的优化条件。考察了起始电压、电解时间、溶液初始p H对处理效果的影响。结果表明,在p H=7,U=14V、I=3.2A、t=30min的条件下,C.I.Reactive Red241模拟染料废水的脱色率可达到86%以上;在p H=7,U=14V、I=3.2A、t=25min的条件下,C.I.Disperse Blue 56模拟染料废水的脱色率可达到79以上%。
文摘目的探讨联合检测血清癌胚抗原(earcinoembryonicantigen,CEA)、糖链抗原19-9(carbohyrate antigan19-9,CA19-9)和炎症标志物C反应蛋白(C-reaction protein,CRP)对大肠癌诊断的临床应用价值。方法分别检测146例大肠癌患者、158例阑尾炎和结肠息肉患者、76例健康者CEA、CA19-9、CRP水平,并应用受试者工作特征(receive operating characteristic,ROC)曲线进行评价。结果与正常对照组比较,大肠癌组和良性炎症组血清CRP、CEA和CA19-9水平均升高,大肠癌组CRP显著低于良性炎症组,但大肠癌组CEA、CA19-9明显高于良性炎症组和正常对照组,差异有统计学意义(P<0.01))。用ROC曲线比较CEA、CA19-9和CRP区分良性炎症组和大肠癌的能力,显示CRP的诊断价值优于CEA和CA19-9。利用ROC曲线分析联合检测三者的诊断能力,其ROC曲线下面积(area under the ROC curve,AUC)为0.886。结论联合检测CEA、CA19-9和CRP可以弥补单项检测的不足,提高临床诊断的准确性,联合检测的准确性优于单项检测。
