Objective:To study the effect of immune-enhancing enteral nutrition application before radical resection of rectal carcinoma on postoperative immune response level and trauma endurance capacity.Methods:A total of 94 p...Objective:To study the effect of immune-enhancing enteral nutrition application before radical resection of rectal carcinoma on postoperative immune response level and trauma endurance capacity.Methods:A total of 94 patients who received radical resection of rectal carcinoma in our hospital between May 2013 and October 2015 were selected and randomly divided into EN group and control group, the EN group received preoperative immune-enhancing enteral nutrition preparations, and the control group received routine preoperative nutrition intervention. The same day after operation, peripheral blood mononuclear cells were collected to determine CD69 and HLA-DR levels, and serum was collected to determine the levels of IgM, IgG, inflammatory response indexes and stress response indexes.Results:CD69 and HLA-DR levels in peripheral blood mononuclear cells as well as IgM, IgG, TP, ALB, PA and TF levels in serum of EN group were significantly higher than those of control group, and serum CRP, YKL-40, IL-1β, TNF-α, IL-6, HSP70, ACTH, Cor and HO-1 levels of EN group were significantly lower than those of control group.Conclusion:Immune-enhancing enteral nutrition application before radical resection of rectal carcinoma can improve the immune function and nutritional status, strengthen trauma endurance capacity and relieve postoperative inflammatory response and stress response.展开更多
目的对AG800全自动血小板聚集仪光学比浊法检测血小板聚集功能进行评价,并测试仪器的检测性能。方法参照美国临床实验室标准化委员会(Clinical and Laboratory Standards Institute,CLSI)及《光学比浊法检测血小板聚集标准化专家共识》...目的对AG800全自动血小板聚集仪光学比浊法检测血小板聚集功能进行评价,并测试仪器的检测性能。方法参照美国临床实验室标准化委员会(Clinical and Laboratory Standards Institute,CLSI)及《光学比浊法检测血小板聚集标准化专家共识》等相关文件,使用AG800全自动血小板聚集仪和美国Chrono-log700型血小板聚集仪,从样本精密度检验、二磷酸腺苷(adenosine diphosphate,ADP)和花生四烯酸(arachidonic acid,AA)相关性及一致性检验评估两台仪器对血小板聚集功能的检测。对AG800全自动血小板聚集仪进行了性能评估,包括加样、温控及光学检测精密度检验。结果通过7 d的连续跟踪结果显示,Chrono-log700血小板聚集仪低水平样本总体检测精密度CV值为10.99%,AG800自动血小板聚集仪的低水平总体精密度为4.95%,Chrono-log700血小板聚集仪的高水平样本总体检测精密度CV值为9.00%,而AG800全自动血小板聚集仪的高水平总体精密度为4.91%。ADP检测结果统计分析,Pearson相关系数r=0.9915,相关程度高。P<0.0001,表示存在显著性,Bland-Altman一致性检验统计结果显示0个点在95%一致性界限以外,符合一致性分析原则,说明两机检测ADP结果一致性好;AA检测结果统计分析,Pearson相关系数r=0.9832,相关程度高。P<0.0001,表示存在显著性;Bland-Altman一致性检验统计结果显示1个点(2.86%)在95%一致性界限以外,符合一致性分析原则,说明两机检测AA结果一致性好。性能评估结果分析,AG800全自动血小板聚集仪的加样均数(Mean)=9.99μL,均数标准误(Standard error of mean)=0.006,偏度系数(Skewness)=0.119,加样精密度CV为0.48%,离散度(平均绝对偏差,AVEDEV)为0.038μL;AG800全自动血小板聚集仪的温度均数=36.98℃,均数标准误=0.041,偏度系数=-0.293,加样精密度CV为0.93%,离散度为0.284℃;AG800全自动血小板聚集仪对低水平标本的检测均数=20.02%,均数标准误=0.099,偏度系数=0.733,加样精密度CV为4.94%,离散度为0.74%。对高水平标本检测的均数=44.13%,均数标准误=0.184,偏度系数=0.416,加样精密度CV为4.14%,离散度为1.49%。结论AG800全自动血小板聚集仪和Chrono-log700血小板聚集仪检测的ADP和AA值之间存在强线性相关性,说明两机检测结果一致性好;AG800全自动血小板聚集仪在对临床样本低水平和高水平标本的检测CV不超过5%,加样、温控及对样本的浊度变化检测精密度高,可满足临床检测的精密度要求,临床适应性好,具有自动化程度高、操作简便、人为影响因素小等优点。展开更多
A rapid method is described for the determination of petroleum hydrocarbons in soil samples. The method is based on the extraction of hydrocarbons by a solvent and the treatment of the solution with an aqueous solutio...A rapid method is described for the determination of petroleum hydrocarbons in soil samples. The method is based on the extraction of hydrocarbons by a solvent and the treatment of the solution with an aqueous solution of a surfactant to release the hydrocarbons to the water phase in the form of a stable emulsion. The emulsion is then utilized to measure the hydrocarbon content by turbidimetry. The effects of various operating parameters including the surfactant solution composition and time of extraction and time of mixing with the releasing solution are investigated. The stability of the emulsion was improved in acid environment containing and electrolyte. The turbidity values (T) were related with hydrocarbon concentration in the extract (C) by the following equation. Turbidity = 2.75 C + 205.7. With R2 = 0.9929. The soil hydrocarbon content (SHC) measured in μg/g can then be calculated using the formula: SHC = [Extract Vol. (mL) x C]/Sample Wt (g). The results correlated well with the results of total hydrocarbons in soils determined by standard methods. The method was applied for the estimation of hydrocarbons in Passaic river sediments taken from various locations and depths. For field work the method was used to supply data on the hydrocarbon contamination of soil samples taken within an oil refinery and a monitoring well drilled within heavy hydrocarbon waste dumping location.展开更多
Coagulation-flocculation is a proven technique for the removal of suspended solids in wastewater, through the application of single angle turbidimetric measurement. Through this measurement, the coag-flocculation kine...Coagulation-flocculation is a proven technique for the removal of suspended solids in wastewater, through the application of single angle turbidimetric measurement. Through this measurement, the coag-flocculation kinetics and functional parameters behavior of Detarium microcarpumin brewery effluent with respect to pH, dosage and time were followed at room temperature. Process parameters such as order of reaction α, rate constant (K), coagulation period τ1/2 etc were determined. Results indicated that reaction order, rate constant, period, pH and dosage recorded optimum values at 2, 1.8 × 10-2 L/mg.min, 0.152 min, 4 and 100 mg/L, respectively. Maximum efficiency recorded was 96.07% at 30 min. Detarium microcarpum has shown potential as an effective bio-coagulant for the removal of turbidity from brewery effluent.展开更多
Objective:To investigate the effect of immune-enhanced enteral nutrition on inflammatory response and immune function in elderly patients with severe septic shock.Methods:From September 2016 to October 2018,58 cases o...Objective:To investigate the effect of immune-enhanced enteral nutrition on inflammatory response and immune function in elderly patients with severe septic shock.Methods:From September 2016 to October 2018,58 cases of serious septic shock patients treated in our hospital,were randomly assigned to two groups.A group-enteral nutrition emulsion group(n=29);B group-enteral nutrition mixed suspension group(n=29);The admission day,one week,two week after admission,the index data of patients',inflammation and immune were collected.Results:With the increase of admission time,CD4 and CD4/CD8 levels in the two groups were gradually increased and CD8 levels were gradually decreased.At 1 and 2 weeks after admission,CD4 and CD4/CD8 levels in the observation group were higher than those in the control group(P<0.05),and CD8 levels were lower than those in the control group(P<0.05).Each immunoglobulin index of subjects in both groups increased with the increase of admission time.The IgG and IgM levels of subjects in the observation group were higher than those in the control group(P<0.05).IgA levels of subjects in the observation group were higher than those in the control group at 1 and 2 weeks after admission(P<0.05).With the increase of admission time,the c-reactive protein concentration of subjects in the two groups decreased gradually(P<0.05).One week after admission,there was no significant difference in c-reactive protein between the observation group and the control group(P>0.05).C-reactive protein of subjects in the observation group was higher than that in the control group at 2 weeks after admission(P<0.05).With the increase of admission time,the concentration of plasma diamine oxidase(DAO)in the two groups decreased gradually,and the DAO at different time points in each group showed statistical difference(P<0.05).1 week after admission,there was no significant difference in DAO between the observation group and the control group(P>0.05).At 2 weeks after admission,the DAO of subjects in the observation group was higher than that in the control group(P<0.05).Conclusions:Immune-enhancing enteral nutrition is more helpful to control the inflammatory response in patients of serious septic shock,and it's also can modulate the immune function.展开更多
目的建立并验证一种检测单克隆抗体药物中重组人透明质酸酶(recombinant human hyaluronidase,rHuPH20)活性的方法。方法利用浊度法建立单克隆抗体药物中rHuPH20活性的检测方法,并对该方法的专属性、线性、中间精密度、准确度、重复性...目的建立并验证一种检测单克隆抗体药物中重组人透明质酸酶(recombinant human hyaluronidase,rHuPH20)活性的方法。方法利用浊度法建立单克隆抗体药物中rHuPH20活性的检测方法,并对该方法的专属性、线性、中间精密度、准确度、重复性进行验证。结果该方法专属性良好,空白和不添加rHuPH20的单克隆抗体药物的rHuPH20活性均<4 U/ml。在3.5~26.7 U/ml范围内,供试品rHuPH20理论活性和实测活性线性相关,决定系数R^(2)>0.97;中间精密度试验结果的变异系数(coefficient of variation,CV)均<15%;各rHuPH20活性的平均值回收率在95%~105%之间,符合线性、中间精密度和准确度的验证要求。6次独立测定3批供试品rHuPH20活性的变异系数分别为6.56%,2.96%和4.10%,符合重复性的可接受标准(≤10%)。结论该方法各项指标均符合要求,可对单克隆抗体药物中rHuPH20活性进行质量控制。展开更多
文摘Objective:To study the effect of immune-enhancing enteral nutrition application before radical resection of rectal carcinoma on postoperative immune response level and trauma endurance capacity.Methods:A total of 94 patients who received radical resection of rectal carcinoma in our hospital between May 2013 and October 2015 were selected and randomly divided into EN group and control group, the EN group received preoperative immune-enhancing enteral nutrition preparations, and the control group received routine preoperative nutrition intervention. The same day after operation, peripheral blood mononuclear cells were collected to determine CD69 and HLA-DR levels, and serum was collected to determine the levels of IgM, IgG, inflammatory response indexes and stress response indexes.Results:CD69 and HLA-DR levels in peripheral blood mononuclear cells as well as IgM, IgG, TP, ALB, PA and TF levels in serum of EN group were significantly higher than those of control group, and serum CRP, YKL-40, IL-1β, TNF-α, IL-6, HSP70, ACTH, Cor and HO-1 levels of EN group were significantly lower than those of control group.Conclusion:Immune-enhancing enteral nutrition application before radical resection of rectal carcinoma can improve the immune function and nutritional status, strengthen trauma endurance capacity and relieve postoperative inflammatory response and stress response.
文摘A rapid method is described for the determination of petroleum hydrocarbons in soil samples. The method is based on the extraction of hydrocarbons by a solvent and the treatment of the solution with an aqueous solution of a surfactant to release the hydrocarbons to the water phase in the form of a stable emulsion. The emulsion is then utilized to measure the hydrocarbon content by turbidimetry. The effects of various operating parameters including the surfactant solution composition and time of extraction and time of mixing with the releasing solution are investigated. The stability of the emulsion was improved in acid environment containing and electrolyte. The turbidity values (T) were related with hydrocarbon concentration in the extract (C) by the following equation. Turbidity = 2.75 C + 205.7. With R2 = 0.9929. The soil hydrocarbon content (SHC) measured in μg/g can then be calculated using the formula: SHC = [Extract Vol. (mL) x C]/Sample Wt (g). The results correlated well with the results of total hydrocarbons in soils determined by standard methods. The method was applied for the estimation of hydrocarbons in Passaic river sediments taken from various locations and depths. For field work the method was used to supply data on the hydrocarbon contamination of soil samples taken within an oil refinery and a monitoring well drilled within heavy hydrocarbon waste dumping location.
文摘Coagulation-flocculation is a proven technique for the removal of suspended solids in wastewater, through the application of single angle turbidimetric measurement. Through this measurement, the coag-flocculation kinetics and functional parameters behavior of Detarium microcarpumin brewery effluent with respect to pH, dosage and time were followed at room temperature. Process parameters such as order of reaction α, rate constant (K), coagulation period τ1/2 etc were determined. Results indicated that reaction order, rate constant, period, pH and dosage recorded optimum values at 2, 1.8 × 10-2 L/mg.min, 0.152 min, 4 and 100 mg/L, respectively. Maximum efficiency recorded was 96.07% at 30 min. Detarium microcarpum has shown potential as an effective bio-coagulant for the removal of turbidity from brewery effluent.
基金Wuhan health and family planning commission research project(No.WZ17B04).
文摘Objective:To investigate the effect of immune-enhanced enteral nutrition on inflammatory response and immune function in elderly patients with severe septic shock.Methods:From September 2016 to October 2018,58 cases of serious septic shock patients treated in our hospital,were randomly assigned to two groups.A group-enteral nutrition emulsion group(n=29);B group-enteral nutrition mixed suspension group(n=29);The admission day,one week,two week after admission,the index data of patients',inflammation and immune were collected.Results:With the increase of admission time,CD4 and CD4/CD8 levels in the two groups were gradually increased and CD8 levels were gradually decreased.At 1 and 2 weeks after admission,CD4 and CD4/CD8 levels in the observation group were higher than those in the control group(P<0.05),and CD8 levels were lower than those in the control group(P<0.05).Each immunoglobulin index of subjects in both groups increased with the increase of admission time.The IgG and IgM levels of subjects in the observation group were higher than those in the control group(P<0.05).IgA levels of subjects in the observation group were higher than those in the control group at 1 and 2 weeks after admission(P<0.05).With the increase of admission time,the c-reactive protein concentration of subjects in the two groups decreased gradually(P<0.05).One week after admission,there was no significant difference in c-reactive protein between the observation group and the control group(P>0.05).C-reactive protein of subjects in the observation group was higher than that in the control group at 2 weeks after admission(P<0.05).With the increase of admission time,the concentration of plasma diamine oxidase(DAO)in the two groups decreased gradually,and the DAO at different time points in each group showed statistical difference(P<0.05).1 week after admission,there was no significant difference in DAO between the observation group and the control group(P>0.05).At 2 weeks after admission,the DAO of subjects in the observation group was higher than that in the control group(P<0.05).Conclusions:Immune-enhancing enteral nutrition is more helpful to control the inflammatory response in patients of serious septic shock,and it's also can modulate the immune function.
文摘目的建立并验证一种检测单克隆抗体药物中重组人透明质酸酶(recombinant human hyaluronidase,rHuPH20)活性的方法。方法利用浊度法建立单克隆抗体药物中rHuPH20活性的检测方法,并对该方法的专属性、线性、中间精密度、准确度、重复性进行验证。结果该方法专属性良好,空白和不添加rHuPH20的单克隆抗体药物的rHuPH20活性均<4 U/ml。在3.5~26.7 U/ml范围内,供试品rHuPH20理论活性和实测活性线性相关,决定系数R^(2)>0.97;中间精密度试验结果的变异系数(coefficient of variation,CV)均<15%;各rHuPH20活性的平均值回收率在95%~105%之间,符合线性、中间精密度和准确度的验证要求。6次独立测定3批供试品rHuPH20活性的变异系数分别为6.56%,2.96%和4.10%,符合重复性的可接受标准(≤10%)。结论该方法各项指标均符合要求,可对单克隆抗体药物中rHuPH20活性进行质量控制。
