Background Transurethral resection of prostate （TURP） has been considered as the standard treatment for benign prostatic hyperplasia （BPH）. However, issues that have not yet been overcome for TURP include bleeding...Background Transurethral resection of prostate （TURP） has been considered as the standard treatment for benign prostatic hyperplasia （BPH）. However, issues that have not yet been overcome for TURP include bleeding and absorption of irrigation fluid. Thus, novel improvement of the surgery is necessary. This study aimed to evaluate the efficacy and safety of bipolar plasma vaporization of the prostate （BPVP） with ＂button-type＂ electrode against standard TURP for BPH.展开更多
A combined method of granular activated carbon（GAC） adsorption and bipolar pulse dielectric barrier discharge（DBD） plasma regeneration was employed to degrade phenol in water.After being saturated with phenol,the ...A combined method of granular activated carbon（GAC） adsorption and bipolar pulse dielectric barrier discharge（DBD） plasma regeneration was employed to degrade phenol in water.After being saturated with phenol,the GAC was filled into the DBD reactor driven by bipolar pulse power for regeneration under various operating parameters.The results showed that different peak voltages,air flow rates,and GAC content can affect phenol decomposition and its major degradation intermediates,such as catechol,hydroquinone,and benzoquinone.The higher voltage and air support were conducive to the removal of phenol,and the proper water moisture of the GAC was 20%.The amount of H2 O2 on the GAC was quantitatively determined,and its laws of production were similar to phenol elimination.Under the optimized conditions,the elimination of phenol on the GAC was confirmed by Fourier transform infrared spectroscopy,and the total removal of organic carbons achieved 50.4%.Also,a possible degradation mechanism was proposed based on the HPLC analysis.Meanwhile,the regeneration efficiency of the GAC was improved with the discharge treatment time,which attained 88.5% after 100 min of DBD processing.展开更多
This paper is concerned with the bipolar compressible Navier-Stokes-Maxwell system for plasmas. We investigated, by means of the techniques of symmetrizer and elaborate energy method, the Cauchy problem in R^3. Under ...This paper is concerned with the bipolar compressible Navier-Stokes-Maxwell system for plasmas. We investigated, by means of the techniques of symmetrizer and elaborate energy method, the Cauchy problem in R^3. Under the assumption that the initial values are close to a equilibrium solutions, we prove that the smooth solutions of this problem converge to a steady state as the time goes to the infinity. It is shown that the difference of densities of two carriers converge to the equilibrium states with the norm ｜｜·｜｜H^s-1, while the velocities and the electromagnetic fields converge to the equilibrium states with weaker norms than ｜｜·｜｜H^s-1. This phenomenon on the charge transport shows the essential difference between the unipolar Navier-Stokes-Maxwell and the bipolar Navier-Stokes-Maxwell system.展开更多
目的:探讨经尿道前列腺等离子双极电切术(TUPKP)与经尿道前列腺电切术(transurethral resection of the prostate,TURP)治疗良性前列腺增生(BPH)的疗效。方法:选取2021年1月—2022年1月麻城市人民医院就诊的230例BPH患者作为研究对象,...目的:探讨经尿道前列腺等离子双极电切术(TUPKP)与经尿道前列腺电切术(transurethral resection of the prostate,TURP)治疗良性前列腺增生(BPH)的疗效。方法:选取2021年1月—2022年1月麻城市人民医院就诊的230例BPH患者作为研究对象,按照不同手术方法将其分为TURP组(n=120)与TUPKP组(n=110);TURP组采用TURP治疗,TUPKP组采用TUPKP治疗。对比两组临床指标、远期疗效指标[国际前列腺症状评分(IPSS)、生活质量评分(QOL)、最大尿流量(Qmax)、残余尿量(PVR)]及两组术后并发症发生情况。结果:TUPKP组手术时间、置管时间及住院时间均短于TURP组(P<0.05),术中出血量小于TURP组(P<0.05),TUPKP组切除腺体重量大于TURP组(P<0.05)。术前,两组IPSS、Qmax、PVR及QOL比较差异均无统计学意义(P>0.05);术后3个月,两组IPSS、PVR及QOL均降低(P<0.05),且TUPKP组均低于TURP组(P<0.05),两组Qmax高于术前,且TUPKP组大于TURP组(P<0.05)。TUPKP组并发症发生率低于TURP组(P<0.05)。结论:与TURP相比,TUPKP手术创伤小,术中出血量少,可显著缩短手术时间、住院时间,且可有效改善前列腺症状,降低残余尿量,提升生活质量,术后并发症少。展开更多
目的研究经尿道前列腺钬激光剜除术(holmium laser enucleation of the prostate,HoLEP)与经尿道双极等离子前列腺剜除术(transurethral bipolar plasma kinetic enucleation and resection of the prostate,PKERP)治疗前列腺增生的疗...目的研究经尿道前列腺钬激光剜除术(holmium laser enucleation of the prostate,HoLEP)与经尿道双极等离子前列腺剜除术(transurethral bipolar plasma kinetic enucleation and resection of the prostate,PKERP)治疗前列腺增生的疗效差异。方法选取2020年8月至2022年8月聊城市第二人民医院泌尿外科收治的前列腺增生患者90例,随机分为HoLEP组(45例,HoLEP治疗)、PKERP组(45例,PKERP治疗),比较两组围术期指标,测量术前、术后血清炎性因子、疼痛介质水平及最大尿流率,评估患者术后疼痛情况,统计术后并发症。结果HoLEP组术中出血量、膀胱冲洗天数、住院天数、导尿管留置天数均显著少于PKERP组;术后1周HoLEP组最大尿流率高于PKERP组;术后1天HoLEP组血清白介素-2(interleukin-2,IL-2)、白介素-6(interleukin-6,IL-6)均显著低于PKERP组(P<0.05);术后1天HoLEP组血清前列腺素E2(prostaglandin E2,PGE2)、5-羟色胺(5-hydroxy tryptamine,5-HT)水平显著低于PKERP组(P<0.05);术后1天、2天、3天HoLEP组疼痛视觉模拟评分法(visual analogue scale,VAS)均显著低于PKERP组,差异均有统计学意义(P<0.05);HoLEP组并发症发生率显著低于PKERP组(P<0.05)。结论HoLEP治疗前列腺增生,可显著下调患者术后炎性因子及疼痛介质水平,减轻患者术后疼痛感,且具有创伤性小、并发症少的优点。展开更多
文摘Background Transurethral resection of prostate （TURP） has been considered as the standard treatment for benign prostatic hyperplasia （BPH）. However, issues that have not yet been overcome for TURP include bleeding and absorption of irrigation fluid. Thus, novel improvement of the surgery is necessary. This study aimed to evaluate the efficacy and safety of bipolar plasma vaporization of the prostate （BPVP） with ＂button-type＂ electrode against standard TURP for BPH.
基金financially supported by National Natural Science Foundation of China(Project No.51608468)the Natural Science Foundation of Hebei Province(Project Nos.B2015203303 and B2015203300)+3 种基金the China Postdoctoral Science Foundation(Project Nos.2015M580216 and 2016M601285)the Youth Teacher Independent Research Program of Yanshan University(Project No.15LGA013)the Hebei Province Preferred Postdoctoral Science Foundation(B2016003019)the Open Foundation of Key Laboratory of Industrial Ecology and Environmental Engineering(MOE)
文摘A combined method of granular activated carbon（GAC） adsorption and bipolar pulse dielectric barrier discharge（DBD） plasma regeneration was employed to degrade phenol in water.After being saturated with phenol,the GAC was filled into the DBD reactor driven by bipolar pulse power for regeneration under various operating parameters.The results showed that different peak voltages,air flow rates,and GAC content can affect phenol decomposition and its major degradation intermediates,such as catechol,hydroquinone,and benzoquinone.The higher voltage and air support were conducive to the removal of phenol,and the proper water moisture of the GAC was 20%.The amount of H2 O2 on the GAC was quantitatively determined,and its laws of production were similar to phenol elimination.Under the optimized conditions,the elimination of phenol on the GAC was confirmed by Fourier transform infrared spectroscopy,and the total removal of organic carbons achieved 50.4%.Also,a possible degradation mechanism was proposed based on the HPLC analysis.Meanwhile,the regeneration efficiency of the GAC was improved with the discharge treatment time,which attained 88.5% after 100 min of DBD processing.
基金supported by the Collaborative Innovation Center on Beijing Society-building and Social GovernanceNSFC(11371042)+2 种基金BNSF(1132006)the key fund of the Beijing education committee of ChinaChina Postdoctoral Science Foundation funded project
文摘This paper is concerned with the bipolar compressible Navier-Stokes-Maxwell system for plasmas. We investigated, by means of the techniques of symmetrizer and elaborate energy method, the Cauchy problem in R^3. Under the assumption that the initial values are close to a equilibrium solutions, we prove that the smooth solutions of this problem converge to a steady state as the time goes to the infinity. It is shown that the difference of densities of two carriers converge to the equilibrium states with the norm ｜｜·｜｜H^s-1, while the velocities and the electromagnetic fields converge to the equilibrium states with weaker norms than ｜｜·｜｜H^s-1. This phenomenon on the charge transport shows the essential difference between the unipolar Navier-Stokes-Maxwell and the bipolar Navier-Stokes-Maxwell system.
文摘目的:探讨经尿道前列腺等离子双极电切术(TUPKP)与经尿道前列腺电切术(transurethral resection of the prostate,TURP)治疗良性前列腺增生(BPH)的疗效。方法:选取2021年1月—2022年1月麻城市人民医院就诊的230例BPH患者作为研究对象,按照不同手术方法将其分为TURP组(n=120)与TUPKP组(n=110);TURP组采用TURP治疗,TUPKP组采用TUPKP治疗。对比两组临床指标、远期疗效指标[国际前列腺症状评分(IPSS)、生活质量评分(QOL)、最大尿流量(Qmax)、残余尿量(PVR)]及两组术后并发症发生情况。结果:TUPKP组手术时间、置管时间及住院时间均短于TURP组(P<0.05),术中出血量小于TURP组(P<0.05),TUPKP组切除腺体重量大于TURP组(P<0.05)。术前,两组IPSS、Qmax、PVR及QOL比较差异均无统计学意义(P>0.05);术后3个月,两组IPSS、PVR及QOL均降低(P<0.05),且TUPKP组均低于TURP组(P<0.05),两组Qmax高于术前,且TUPKP组大于TURP组(P<0.05)。TUPKP组并发症发生率低于TURP组(P<0.05)。结论:与TURP相比,TUPKP手术创伤小,术中出血量少,可显著缩短手术时间、住院时间,且可有效改善前列腺症状,降低残余尿量,提升生活质量,术后并发症少。
文摘目的研究经尿道前列腺钬激光剜除术(holmium laser enucleation of the prostate,HoLEP)与经尿道双极等离子前列腺剜除术(transurethral bipolar plasma kinetic enucleation and resection of the prostate,PKERP)治疗前列腺增生的疗效差异。方法选取2020年8月至2022年8月聊城市第二人民医院泌尿外科收治的前列腺增生患者90例,随机分为HoLEP组(45例,HoLEP治疗)、PKERP组(45例,PKERP治疗),比较两组围术期指标,测量术前、术后血清炎性因子、疼痛介质水平及最大尿流率,评估患者术后疼痛情况,统计术后并发症。结果HoLEP组术中出血量、膀胱冲洗天数、住院天数、导尿管留置天数均显著少于PKERP组;术后1周HoLEP组最大尿流率高于PKERP组;术后1天HoLEP组血清白介素-2(interleukin-2,IL-2)、白介素-6(interleukin-6,IL-6)均显著低于PKERP组(P<0.05);术后1天HoLEP组血清前列腺素E2(prostaglandin E2,PGE2)、5-羟色胺(5-hydroxy tryptamine,5-HT)水平显著低于PKERP组(P<0.05);术后1天、2天、3天HoLEP组疼痛视觉模拟评分法(visual analogue scale,VAS)均显著低于PKERP组,差异均有统计学意义(P<0.05);HoLEP组并发症发生率显著低于PKERP组(P<0.05)。结论HoLEP治疗前列腺增生,可显著下调患者术后炎性因子及疼痛介质水平,减轻患者术后疼痛感,且具有创伤性小、并发症少的优点。
