目的探讨经尿道前列腺等离子双极电切术(transurethral plasmakinetic resection of prostate,TUPKP)治疗高危良性前列腺增生(BPH)患者的临床疗效。方法采用前瞻性多中心研究设计。在全国20家医院泌尿外科按照纳入排除标准,入组行TUPKP...目的探讨经尿道前列腺等离子双极电切术(transurethral plasmakinetic resection of prostate,TUPKP)治疗高危良性前列腺增生(BPH)患者的临床疗效。方法采用前瞻性多中心研究设计。在全国20家医院泌尿外科按照纳入排除标准,入组行TUPKP治疗的高危BPH患者,分析患者基线、围手术期及术后3个月随访的相关数据,评价疗效和安全性。结果2016年9月至2018年12月共入组229名高危BPH患者。与基线相比,术后3个月随访的国际前列腺症状评分改变量为-17.28[95%CI(-18.02,-16.54)]分、最大尿流率改变量为5.61[95%CI(0.68,10.54)]mL·s^(-1)、残余尿量改变量为-84.50[95%CI(-96.49,-72.51)]mL、生活质量评分改变量为-3.24[95%CI(-3.42,-3.06)]分,差异均具有统计学意义(P<0.05)。术中及术后并发症的发生率低,未发生与手术相关的不良事件。结论TUPKP可以用于治疗高危BPH患者,建议由技术熟练的术者实施手术。展开更多
Composite wires of 100 μm insulated CuBewire plated with a layer of NiFeB were produced by elec-troless-deposition, and their magnetic properties were stud-led. The results showed that a good magneto-impedance (MI)ef...Composite wires of 100 μm insulated CuBewire plated with a layer of NiFeB were produced by elec-troless-deposition, and their magnetic properties were stud-led. The results showed that a good magneto-impedance (MI)effect can be obtained at relatively low frequency. The largestMI ratio (△Z/Z)max obtained is 250% at 500 kHz. Mag-neto-resistance effect was also observed at low frequency,with the (△R/R)max observed to be -8.5% at 540 Hz and 38.7% at 10 kHz. Results are discussed, and the equivalent resistance and inductance as the result of the NiFeB layer are taken into account.展开更多
The BeCu/Insulator/CoP composite wires were prepared by electroless–deposition on insulated BeCu wire. The composite wire constructs a serial LC resonant element by itself. Due to the LC resonance, very large high-fr...The BeCu/Insulator/CoP composite wires were prepared by electroless–deposition on insulated BeCu wire. The composite wire constructs a serial LC resonant element by itself. Due to the LC resonance, very large high-frequency magneto-reactance effect is observed at near the LC resonance frequency, and the maximal magneto-reactance ratio for the composite wire with length of 5 cm is 1.08×107% at 58924500 Hz. The LC resonance frequency decreases with the increasing length of the composite wire. The practical working frequency, at which the very large high-frequency magneto-reactance effect is observed, can be controlled through controlling the LC resonance frequency. The LC resonance mechanism is also analyzed.展开更多
The macroscopic and microscopic magnetic properties for amorphous and nanocrystalline Fe73.5Cu1Nb3-Si13.5B9 powder have been investigated and their giant mag-neto-impedance (GMI) effect is reported for the first time....The macroscopic and microscopic magnetic properties for amorphous and nanocrystalline Fe73.5Cu1Nb3-Si13.5B9 powder have been investigated and their giant mag-neto-impedance (GMI) effect is reported for the first time. The experimental results show that powder sample annealed at 510℃ possesses the optimum soft magnetic properties. However, the maximum longitudinally driven GMI (LDGMI) ratio (about 52%) is found in the sample annealed at 600℃. This means that the LDGMI ratio depends on not only their magnetic properties but also their electric properties.展开更多
文摘目的探讨经尿道前列腺等离子双极电切术(transurethral plasmakinetic resection of prostate,TUPKP)治疗高危良性前列腺增生(BPH)患者的临床疗效。方法采用前瞻性多中心研究设计。在全国20家医院泌尿外科按照纳入排除标准,入组行TUPKP治疗的高危BPH患者,分析患者基线、围手术期及术后3个月随访的相关数据,评价疗效和安全性。结果2016年9月至2018年12月共入组229名高危BPH患者。与基线相比,术后3个月随访的国际前列腺症状评分改变量为-17.28[95%CI(-18.02,-16.54)]分、最大尿流率改变量为5.61[95%CI(0.68,10.54)]mL·s^(-1)、残余尿量改变量为-84.50[95%CI(-96.49,-72.51)]mL、生活质量评分改变量为-3.24[95%CI(-3.42,-3.06)]分,差异均具有统计学意义(P<0.05)。术中及术后并发症的发生率低,未发生与手术相关的不良事件。结论TUPKP可以用于治疗高危BPH患者,建议由技术熟练的术者实施手术。
文摘Composite wires of 100 μm insulated CuBewire plated with a layer of NiFeB were produced by elec-troless-deposition, and their magnetic properties were stud-led. The results showed that a good magneto-impedance (MI)effect can be obtained at relatively low frequency. The largestMI ratio (△Z/Z)max obtained is 250% at 500 kHz. Mag-neto-resistance effect was also observed at low frequency,with the (△R/R)max observed to be -8.5% at 540 Hz and 38.7% at 10 kHz. Results are discussed, and the equivalent resistance and inductance as the result of the NiFeB layer are taken into account.
基金the National Natural Science Foundation of China (Grant No. 20575022)the Emphasis Project of Shanghai Nanotechnology Promotion Center, China (Grant No. 0652nm036)the Opening Foundation of the Key Laboratory for Magnetism and Magnetic Material of the Education Ministry of China, Lanzhou University (Grant No. LZ013)
文摘The BeCu/Insulator/CoP composite wires were prepared by electroless–deposition on insulated BeCu wire. The composite wire constructs a serial LC resonant element by itself. Due to the LC resonance, very large high-frequency magneto-reactance effect is observed at near the LC resonance frequency, and the maximal magneto-reactance ratio for the composite wire with length of 5 cm is 1.08×107% at 58924500 Hz. The LC resonance frequency decreases with the increasing length of the composite wire. The practical working frequency, at which the very large high-frequency magneto-reactance effect is observed, can be controlled through controlling the LC resonance frequency. The LC resonance mechanism is also analyzed.
基金This work was supported by the State Climbing Project(Grant No.95A-08NMS)the New Materials Center of Shanghai(Grant No.99JC14017).
文摘The macroscopic and microscopic magnetic properties for amorphous and nanocrystalline Fe73.5Cu1Nb3-Si13.5B9 powder have been investigated and their giant mag-neto-impedance (GMI) effect is reported for the first time. The experimental results show that powder sample annealed at 510℃ possesses the optimum soft magnetic properties. However, the maximum longitudinally driven GMI (LDGMI) ratio (about 52%) is found in the sample annealed at 600℃. This means that the LDGMI ratio depends on not only their magnetic properties but also their electric properties.
