Separation of ionic liquids from dilute aqueous solutions using the method based on CO_2 hydrates

Ionic liquids （ILs） have been regarded as the potential novel solvents for improved analytical- and process-scale separation methods.The development of methods for the recovery of ILs from aqueous solutions to escape contamination and recycle samples will ultimately govern the viability of ILs in the future industrial applications. Therefore, in this paper a new method for separation of ILs from their dilute aqueous solutions and simultaneously purification of water was proposed on the basis of the CO2 hydrate formation. For illustration, the dilute aqueous solutions with concentrations of ILs ranging from 2× 10^-3 mol% to 2×10^-1 mol% were concentrated. The results show that the separation efficiency is very impressive and that the new method is applicable to aqueous solutions of both hydrophobic and hydrophilic ILs. Compared to the literature separation method based on the supercritical CO2, the new method is applicable to lower concentrations, and more importantly, its operation condition is mild.

Effect of 1-butyl-3-methylimidazolium tetrafluoroborate on the formation rate of CO_2 hydrate

The effect of the addition of 1-butyl-3-methylimidazolium tetrafluoroborate （[C4mim][BF4]） on the formation rates of CO2 hydrates was investigate. The isothermal and isobaric methods were used to measure the formation rates of CO2 hydrates. As compared to those of pure water, the data of phase equilibrium changed greatly. The effects of pressure, temperature, and the concentration of [C4mim][BF4] aqueous solution on the formation rates of CO2 hydrates were investigated. With a constant concentration of [C4mim][BF4], the rate of gas consumption was enhanced with the lowering of experimental temperature. However, a decrease in pressure exerted an opposite effect on the rate of gas consumption. Moreover, the addition of [C4mim][BF4] raised the equilibrium pressure of hydrate formation at the same temperature.

Evaluation of the safety and efficacy of glucocorticoid therapy for hyperbilirubinemia in patients with hepatocellular carcinoma who have undergone transcatheter arterial chemoembolization

Objective The aim of this study was to analyze the safety and efficacy of glucocorticoid treatment for hyperbilirubinemia in patients with hepatocellular carcinoma(HCC)who have undergone transcatheter arterial chemoembolization(TACE).Methods We conducted a retrospective analysis of the clinical data of 198 patients with HCC who were admitted to The Fifth Medical Center of PLA General Hospital from June 2014 to August 2019 and underwent TACE therapy.The patients were divided into glucocorticoid(GCC)treatment group and control group.Standard liver-protecting procedures were used in both groups.The treatment group also received intravenous injections of methylprednisolone sodium succinate for 3–5 days.Reduction in bilirubin concentration,mean duration of hospitalization,and complications were compared between the two groups to investigate the safety and efficacy of GCCs for treatment of hyperbilirubinemia after TACE treatment.Results Bilirubin concentrations were significantly lower in the treatment group than in control group on days 3 and 5 after GCC/conventional liver-protecting treatment(P<0.05).The treatment group had significantly shorter durations of total post-surgery hospitalization,and recovery time than the control group(14.5±4.6 days vs.17.5±6.6 days,P<0.001;9.2±3.3 days vs.11.8±5.4 days,P=0.001;7.0±3.3 days vs.9.3±4.6 days,P<0.001).No GCC-associated complications were detected in the treatment group.Conclusion Short-term use of GCCs to treat hyperbilirubinemia in patients with HCC who have undergone TACE is safe and associated with rapid decline in bilirubin concentration and shorter hospital stay compared with patients who did not receive GCCs.

Combination of TACE and FOLFOX4 in the treatment of unresectable advanced hepatocellular carcinoma:a prospective cohort study

Objective The aim of the study was to assess the effectiveness and safety of a combined therapy with transcatheter arterial chemoembolization(TACE)and FOLFOX4,in patients with unresectable advanced hepatocellular carcinoma(HCC).Methods In this study,patients with advanced HCC,that received treatment between November 2015 and October 2017,were recruited.Among these,30 patients were treated with TACE only(TACE group);whereas 33 patients were treated with a combination of FOLFOX4 chemotherapy and TACE(combination group).Survival analyses,including overall survival(OS)and progression free survival(PFS)analysis,were performed for both groups.Following this,the responses of patients to treatment were evaluated every 3 months,and the toxic and adverse events were observed.Results The median follow-up time was 9.2 months(3-36 months).In the combination group,at 3 months,a disease control rate(DCR)of 60.6%,and a median OS of 9.1 months was obtained[95%confidence interval(CI)6.5-11.7].In the TACE group,the DCR and OS were 33.3%and 5.5 months(95%CI 4.3-6.7),respectively.On the other hand,the PFS in the combination and TACE groups were observed as 5.6 months(95%CI 3.6-7.6)and 2.6 months(95%CI 2.0-3.2),respectively.Both these findings indicate a statistically significant difference(P=0.01)between both the groups.Similar TACE associated adverse events were observed in both groups.In the combination group,frequently observed FOLFOX4 related adverse effects included nausea(90.9%),leukopenia(75.8%),thrombocytopenia(69.7%),and vomiting(69.7%).Most adverse reactions were between grades I-III and were alleviated after symptomatic treatments.Conclusion The combination of TACE with FOLFOX4 therapy has better effectivity and safety than TACE alone.

New Non-TravellingWave Solutions of Calogero Equation

In this paper,the idea of a combination of variable separation approach and the extended homoclinic test approach is proposed to seek non-travelling wave solutions of Calogero equation.The equation is reduced to some(1+1)-dimensional nonlinear equations by applying the variable separation approach and solves reduced equations with the extended homoclinic test technique.Based on this idea and with the aid of symbolic computation,some new explicit solutions can be obtained.

Long-Time Dynamics for a Nonlinear Viscoelastic Kirchhoff Plate Equation

This paper is devoted to study the long-time dynamics for a nonlinear viscoelastic Kirchhoff plate equation.Under some growth conditions of g and f,the existence of a global attractor is granted.Furthermore,in the subcritical case,this global attractor has finite Hausdorff and fractal dimensions.