Background:The purpose of our study is to examine the long(5-year)efficacy of the all surface laser ablation(ASLA)combined with accelerated cross-linking(CXL)for the treatment of myopia without the use of mitomycin-C(...Background:The purpose of our study is to examine the long(5-year)efficacy of the all surface laser ablation(ASLA)combined with accelerated cross-linking(CXL)for the treatment of myopia without the use of mitomycin-C(MMC).Methods:This retrospective study consisted of 202 eyes of 118 myopic(SD:2.41,range:−1.50 to−12.75 D)patients(44 males,74 females).Mean age was 28.50 years(SD:6.45,range:18 to 51 years)that underwent ASLA with accelerated CXL for the treatment of their myopia.Results:The patients underwent routine postoperative assessment on the 1st,3rd,7th day and in the 1st,3rd,6th and 12th month,30th month(±6 months),4th and 5th year.The mean spherical equivalent(SEq)refractive error changed from−6.41±2.41 D preoperatively to−0.02±0.53 D at 5 years postoperatively.The haze score was 0.18,0.25 and 0.28 at 1,3 and 6 months postoperatively.At 12 months after the treatment,no eyes had significant corneal haze and in all the following postoperative time intervals the haze traces were gone.Conclusion:ASLA combined with accelerated CXL(ASLA-XTRA)appears to be safe,efficacious and offering very good refractive results.The potential additional benefits of this modality are the stabilizing effect of the refraction and its sterilization effect on the treated cornea without the potential side effects of MMC.展开更多
相比于传统的ALSA(Advanced Linux Sound Architecture)架构音频驱动,针对嵌入式音频系统设计的ASoC架构音频驱动具有代码高度复用、动态电源管理等显著的优点。深入研究了嵌入式ASoC(ALSA System on Chip)音频驱动架构,实现了基于s3c2...相比于传统的ALSA(Advanced Linux Sound Architecture)架构音频驱动,针对嵌入式音频系统设计的ASoC架构音频驱动具有代码高度复用、动态电源管理等显著的优点。深入研究了嵌入式ASoC(ALSA System on Chip)音频驱动架构,实现了基于s3c2440和uda1341的嵌入式音频系统的ASoC架构音频驱动,并提出在ASoC架构音频驱动设计过程中为满足ASoC独立性原则可采用的设计思路和设计技巧。展开更多
美国《景观设计学》杂志2003年6月发表了特约撰稿人Mary G. Padua教授的文章,对获2002年全美景观设计年度荣誉奖的俞孔坚教授及北京土人景观规划设计研究所设计的广东中山歧江公园,进行了较全面的评介。认为这个在旧造船厂上设计的公园...美国《景观设计学》杂志2003年6月发表了特约撰稿人Mary G. Padua教授的文章,对获2002年全美景观设计年度荣誉奖的俞孔坚教授及北京土人景观规划设计研究所设计的广东中山歧江公园,进行了较全面的评介。认为这个在旧造船厂上设计的公园,保留造船厂的废旧设备及周围的自然植被,对旧船厂进行了产业用地再生设计,使歧江河岸的水—生物—人得以在一个边缘生态环境中相融共生,歧江公园用现代创新设计语言,讲述了中国近现代工业化历程。展开更多
Catalytic pyrolysis of thermoplastics extracted from waste electrical and electronic equipment （WEEE） was investigated using various fly ash-derived catalysts. The catalysts were prepared from fly ash by a simple me...Catalytic pyrolysis of thermoplastics extracted from waste electrical and electronic equipment （WEEE） was investigated using various fly ash-derived catalysts. The catalysts were prepared from fly ash by a simple method that basically includes a mechanical treatment followed by an acid or a basic activation. The synthesized catalysts were characterized using various analytical techniques. The results showed that not treated fly ash （FA） is characterized by good crystallinity, which in turn is lowered by mechanical and chemical treatment （fly ash after mechanical and acid activation, FAMA） and suppressed almost entirely down to let fly ash become completely amorphous （fly ash al^er mechanical and basic activation FAMB）. Simultaneously, the surface area resulted increased. Subsequently, FA, FAMB and FAMA were used in the pyrolysis of a WEEE plastic sample at 400~C and their performance were compared with thermal pyrolysis at the same temperature. The catalysts principally improve the light oil yield： from 59 wt.% with thermal pyrolysis to 83 wt.% using FAMB. The formation of styrene in the oil is also increased： from 243 mg/g with thermal pyrolysis to 453 mg/g using FAMB. As a result, FAMB proved to be the best catalyst, thus producing also the lowest and the highest amount of char and gas, respectively.展开更多
文摘Background:The purpose of our study is to examine the long(5-year)efficacy of the all surface laser ablation(ASLA)combined with accelerated cross-linking(CXL)for the treatment of myopia without the use of mitomycin-C(MMC).Methods:This retrospective study consisted of 202 eyes of 118 myopic(SD:2.41,range:−1.50 to−12.75 D)patients(44 males,74 females).Mean age was 28.50 years(SD:6.45,range:18 to 51 years)that underwent ASLA with accelerated CXL for the treatment of their myopia.Results:The patients underwent routine postoperative assessment on the 1st,3rd,7th day and in the 1st,3rd,6th and 12th month,30th month(±6 months),4th and 5th year.The mean spherical equivalent(SEq)refractive error changed from−6.41±2.41 D preoperatively to−0.02±0.53 D at 5 years postoperatively.The haze score was 0.18,0.25 and 0.28 at 1,3 and 6 months postoperatively.At 12 months after the treatment,no eyes had significant corneal haze and in all the following postoperative time intervals the haze traces were gone.Conclusion:ASLA combined with accelerated CXL(ASLA-XTRA)appears to be safe,efficacious and offering very good refractive results.The potential additional benefits of this modality are the stabilizing effect of the refraction and its sterilization effect on the treated cornea without the potential side effects of MMC.
文摘相比于传统的ALSA(Advanced Linux Sound Architecture)架构音频驱动,针对嵌入式音频系统设计的ASoC架构音频驱动具有代码高度复用、动态电源管理等显著的优点。深入研究了嵌入式ASoC(ALSA System on Chip)音频驱动架构,实现了基于s3c2440和uda1341的嵌入式音频系统的ASoC架构音频驱动,并提出在ASoC架构音频驱动设计过程中为满足ASoC独立性原则可采用的设计思路和设计技巧。
文摘美国《景观设计学》杂志2003年6月发表了特约撰稿人Mary G. Padua教授的文章,对获2002年全美景观设计年度荣誉奖的俞孔坚教授及北京土人景观规划设计研究所设计的广东中山歧江公园,进行了较全面的评介。认为这个在旧造船厂上设计的公园,保留造船厂的废旧设备及周围的自然植被,对旧船厂进行了产业用地再生设计,使歧江河岸的水—生物—人得以在一个边缘生态环境中相融共生,歧江公园用现代创新设计语言,讲述了中国近现代工业化历程。
文摘Catalytic pyrolysis of thermoplastics extracted from waste electrical and electronic equipment （WEEE） was investigated using various fly ash-derived catalysts. The catalysts were prepared from fly ash by a simple method that basically includes a mechanical treatment followed by an acid or a basic activation. The synthesized catalysts were characterized using various analytical techniques. The results showed that not treated fly ash （FA） is characterized by good crystallinity, which in turn is lowered by mechanical and chemical treatment （fly ash after mechanical and acid activation, FAMA） and suppressed almost entirely down to let fly ash become completely amorphous （fly ash al^er mechanical and basic activation FAMB）. Simultaneously, the surface area resulted increased. Subsequently, FA, FAMB and FAMA were used in the pyrolysis of a WEEE plastic sample at 400~C and their performance were compared with thermal pyrolysis at the same temperature. The catalysts principally improve the light oil yield： from 59 wt.% with thermal pyrolysis to 83 wt.% using FAMB. The formation of styrene in the oil is also increased： from 243 mg/g with thermal pyrolysis to 453 mg/g using FAMB. As a result, FAMB proved to be the best catalyst, thus producing also the lowest and the highest amount of char and gas, respectively.
