目的:比较机械磨削术与CO2点阵激光治疗凹陷性痤疮瘢痕的疗效及不良反应。方法:选取笔者医院2024年9月~2025年6月收治的10例凹陷性痤疮瘢痕患者面部左右近似对称分布的瘢痕为研究对象,取得48组面部近似对称分布的凹陷性痤疮瘢痕,总计96...目的:比较机械磨削术与CO2点阵激光治疗凹陷性痤疮瘢痕的疗效及不良反应。方法:选取笔者医院2024年9月~2025年6月收治的10例凹陷性痤疮瘢痕患者面部左右近似对称分布的瘢痕为研究对象,取得48组面部近似对称分布的凹陷性痤疮瘢痕,总计96例瘢痕。按随机分配法将每组两个瘢痕分为A组和B组,A组予以机械磨削术治疗,B组予以CO2点阵激光治疗。统计第一次治疗后30 d两组的治疗有效率、瘢痕面积与恢复面积、患者与观察者瘢痕评估量表(POSAS)得分、创口结痂以及脱痂所需的时间、不良反应发生率、患者满意度。采用SPSS25.0统计软件分析数据,计量资料组间比较采用独立样本t检验或配对t检验;计数资料组间比较采用卡方检验。结果:第一次治疗后30 d,A组治疗有效率及患者满意度均高于B组(P P 2高于B组(0.25 ± 0.39) mm2,组间差异具有统计学意义(P P P P P > 0.05)。结论:与CO2点阵激光相比,机械磨削术治疗凹陷性痤疮瘢痕的临床效果显著,可以提高治疗有效率与瘢痕恢复面积,患者满意度更高,但伴随着色素沉着率增高的风险。展开更多
A2/O + MBR工艺为A2/O工艺与MBR工艺的串联组合,利用了MBR膜池代替A2/O工艺中的二沉池,使其具有更小的占地面积和更加优质、稳定的出水水质保障。为了探究传统A2/O工艺及A2/O + MBR工艺在城镇污水处理中的应用效能,在同季节、同时段、...A2/O + MBR工艺为A2/O工艺与MBR工艺的串联组合,利用了MBR膜池代替A2/O工艺中的二沉池,使其具有更小的占地面积和更加优质、稳定的出水水质保障。为了探究传统A2/O工艺及A2/O + MBR工艺在城镇污水处理中的应用效能,在同季节、同时段、进水均匀分配的条件下,比较分析了两种工艺在连续31 d中对污染物的降解效能。结果表明:A2/O + MBR工艺在处理城镇生活污水的效果上优于传统A2/O工艺,且抗冲击负荷能力更强,是更具优势的成熟工艺。A2/O工艺、A2/O + MBR工艺的平均处理成本分别为0.4702元/m3、0.6354元/m3,传统A2/O工艺运行成本比A2/O + MBR工艺低0.1652元/m3,相较之下更具经济性。The A2/O + MBR process is a series combination of A2/O process and MBR process. The MBR membrane tank is used to replace the secondary sedimentation tank in the A2/O process, so that it has a smaller floor area and better quality and stable effluent quality assurance. In order to explore the application efficiency of traditional A2/O process and A2/O + MBR process in urban sewage treatment, the degradation efficiency of pollutants by the two processes in 31 days was compared and analyzed under the condition of uniform distribution of water in the same season and at the same time. The results show that the A2/O + MBR process is superior to the traditional A2/O process in the treatment of urban domestic sewage, and the impact load resistance is stronger, which is a more advantageous mature process. The average treatment costs of theA2/O process and the A2/O + MBR process are 0.4702 yuan/m3 and 0.6354 yuan/m3, respectively. The operating cost of the traditional A2/O process is 0.1652 yuan/m3 lower than that of the A2/O + MBR process, which is more economical.展开更多
实现了以c切Nd:YVO4晶体作为激光增益介质,b切KGW和a切YVO4为拉曼晶体的半导体泵浦主动调Q双频移同步振荡的拉曼激光器的高效运转,得到YVO4晶体在890 cm−1处1178 nm和KGW晶体在901 cm−1处1180 nm的一阶斯托克斯光的双波长同步脉冲输出,...实现了以c切Nd:YVO4晶体作为激光增益介质,b切KGW和a切YVO4为拉曼晶体的半导体泵浦主动调Q双频移同步振荡的拉曼激光器的高效运转,得到YVO4晶体在890 cm−1处1178 nm和KGW晶体在901 cm−1处1180 nm的一阶斯托克斯光的双波长同步脉冲输出,当入射泵浦功率为8.37 w,脉冲重复率为15 kHz时,由1178和1180 nm光组成的拉曼激光平均输出最高为1.45 w。The efficient operation of a semiconductor-pumped actively Q-switched dual-frequency-shifted synchronous oscillation Raman laser was successfully demonstrated, employing a c-cut Nd:YVO4 crystal as the laser gain medium in conjunction with b-cut KGW and a-cut YVO4 crystals serving as Raman crystals. The synchronous dual wavelength pulse output of 1178 and 1180 nm first-order Stokes light corresponding to 890 cm−1 Raman shift in YVO4 and 901 cm−1 Raman shift in KGW is obtained. When the incident pump power is 8.37 w and the PRF is 15 kHz, the average output Raman laser composed of 1178 and 1180 nm lines is 1.45 w.展开更多
文摘目的:比较机械磨削术与CO2点阵激光治疗凹陷性痤疮瘢痕的疗效及不良反应。方法:选取笔者医院2024年9月~2025年6月收治的10例凹陷性痤疮瘢痕患者面部左右近似对称分布的瘢痕为研究对象,取得48组面部近似对称分布的凹陷性痤疮瘢痕,总计96例瘢痕。按随机分配法将每组两个瘢痕分为A组和B组,A组予以机械磨削术治疗,B组予以CO2点阵激光治疗。统计第一次治疗后30 d两组的治疗有效率、瘢痕面积与恢复面积、患者与观察者瘢痕评估量表(POSAS)得分、创口结痂以及脱痂所需的时间、不良反应发生率、患者满意度。采用SPSS25.0统计软件分析数据,计量资料组间比较采用独立样本t检验或配对t检验;计数资料组间比较采用卡方检验。结果:第一次治疗后30 d,A组治疗有效率及患者满意度均高于B组(P P 2高于B组(0.25 ± 0.39) mm2,组间差异具有统计学意义(P P P P P > 0.05)。结论:与CO2点阵激光相比,机械磨削术治疗凹陷性痤疮瘢痕的临床效果显著,可以提高治疗有效率与瘢痕恢复面积,患者满意度更高,但伴随着色素沉着率增高的风险。
文摘A2/O + MBR工艺为A2/O工艺与MBR工艺的串联组合,利用了MBR膜池代替A2/O工艺中的二沉池,使其具有更小的占地面积和更加优质、稳定的出水水质保障。为了探究传统A2/O工艺及A2/O + MBR工艺在城镇污水处理中的应用效能,在同季节、同时段、进水均匀分配的条件下,比较分析了两种工艺在连续31 d中对污染物的降解效能。结果表明:A2/O + MBR工艺在处理城镇生活污水的效果上优于传统A2/O工艺,且抗冲击负荷能力更强,是更具优势的成熟工艺。A2/O工艺、A2/O + MBR工艺的平均处理成本分别为0.4702元/m3、0.6354元/m3,传统A2/O工艺运行成本比A2/O + MBR工艺低0.1652元/m3,相较之下更具经济性。The A2/O + MBR process is a series combination of A2/O process and MBR process. The MBR membrane tank is used to replace the secondary sedimentation tank in the A2/O process, so that it has a smaller floor area and better quality and stable effluent quality assurance. In order to explore the application efficiency of traditional A2/O process and A2/O + MBR process in urban sewage treatment, the degradation efficiency of pollutants by the two processes in 31 days was compared and analyzed under the condition of uniform distribution of water in the same season and at the same time. The results show that the A2/O + MBR process is superior to the traditional A2/O process in the treatment of urban domestic sewage, and the impact load resistance is stronger, which is a more advantageous mature process. The average treatment costs of theA2/O process and the A2/O + MBR process are 0.4702 yuan/m3 and 0.6354 yuan/m3, respectively. The operating cost of the traditional A2/O process is 0.1652 yuan/m3 lower than that of the A2/O + MBR process, which is more economical.
文摘实现了以c切Nd:YVO4晶体作为激光增益介质,b切KGW和a切YVO4为拉曼晶体的半导体泵浦主动调Q双频移同步振荡的拉曼激光器的高效运转,得到YVO4晶体在890 cm−1处1178 nm和KGW晶体在901 cm−1处1180 nm的一阶斯托克斯光的双波长同步脉冲输出,当入射泵浦功率为8.37 w,脉冲重复率为15 kHz时,由1178和1180 nm光组成的拉曼激光平均输出最高为1.45 w。The efficient operation of a semiconductor-pumped actively Q-switched dual-frequency-shifted synchronous oscillation Raman laser was successfully demonstrated, employing a c-cut Nd:YVO4 crystal as the laser gain medium in conjunction with b-cut KGW and a-cut YVO4 crystals serving as Raman crystals. The synchronous dual wavelength pulse output of 1178 and 1180 nm first-order Stokes light corresponding to 890 cm−1 Raman shift in YVO4 and 901 cm−1 Raman shift in KGW is obtained. When the incident pump power is 8.37 w and the PRF is 15 kHz, the average output Raman laser composed of 1178 and 1180 nm lines is 1.45 w.
