The optimal intensity noise suppression of a Fabry-Perot （FP） laser is experimentally acquired by relatively strong external optical injection locking technology. The maximum suppression is up to 9dB around the rela...The optimal intensity noise suppression of a Fabry-Perot （FP） laser is experimentally acquired by relatively strong external optical injection locking technology. The maximum suppression is up to 9dB around the relaxation oscillation peak of the free running FP laser. We demonstrate how the injection light power and detuning frequency influence the intensity noise suppression effects. Additionally, the relationship between the optimal suppression range and the stable locking range is experimentally studied：both ranges enlarge as the injection light power increases, but the stable locking range permits larger detuning frequency at identical injection light power.展开更多
Background:Esophageal replacement in children is an option that is confined to very few situations including long-gap esophageal atresia and esophageal strictures unresponsive to other therapies(peptic or caustic inge...Background:Esophageal replacement in children is an option that is confined to very few situations including long-gap esophageal atresia and esophageal strictures unresponsive to other therapies(peptic or caustic ingestion).The purpose of our work was to describe the experience of gastric transposition in three Italian centers.Methods:This is a retrospective study.The data were extrapolated from a prospective database.We included all patients who had undergone gastric transposition in the last 15 years.Results:In the 15-year period,eight infants and children(3 males and 5 females)underwent gastric transposition for esophageal replacement.Six patients had long-gap esophageal atresia,and two had caustic esophageal stenosis.There were no deaths in the series.Three patients had an early postoperative complication:two had a self-limited salivary fistula at three weeks,and one(a patient with jejunostomy)had a jejunal perforation treated surgically.One late complication,anastomotic stricture,was recorded that required two endoscopic dilatations.The median follow-up was 60 months(range:18–144 months).At final clinical follow-up,six patients had no eating problems,and two patients had some difficulties with eating(jejunostomy in situ),but they underwent logopedic therapy with improved outcomes.All patients had an increase in body weight and height postoperatively.Conclusion:Our small study reports the clinical experience of three Italian centers in which gastric transposition was performed with excellent results,both in terms of surgical technique(simplicity,reproducibility,complication rate)and clinical follow-up(good oral feeding of young patients,normal social life and regular growth curves).展开更多
基金the National Natural Science Foundation of China(Nos.60510173,60536010,60506006,60606019,60777029)the State Key Development Program for Basic Research of China(Nos.2006CB604902,2006CB302806,2006DFA11880)~~
文摘The optimal intensity noise suppression of a Fabry-Perot （FP） laser is experimentally acquired by relatively strong external optical injection locking technology. The maximum suppression is up to 9dB around the relaxation oscillation peak of the free running FP laser. We demonstrate how the injection light power and detuning frequency influence the intensity noise suppression effects. Additionally, the relationship between the optimal suppression range and the stable locking range is experimentally studied：both ranges enlarge as the injection light power increases, but the stable locking range permits larger detuning frequency at identical injection light power.
文摘Background:Esophageal replacement in children is an option that is confined to very few situations including long-gap esophageal atresia and esophageal strictures unresponsive to other therapies(peptic or caustic ingestion).The purpose of our work was to describe the experience of gastric transposition in three Italian centers.Methods:This is a retrospective study.The data were extrapolated from a prospective database.We included all patients who had undergone gastric transposition in the last 15 years.Results:In the 15-year period,eight infants and children(3 males and 5 females)underwent gastric transposition for esophageal replacement.Six patients had long-gap esophageal atresia,and two had caustic esophageal stenosis.There were no deaths in the series.Three patients had an early postoperative complication:two had a self-limited salivary fistula at three weeks,and one(a patient with jejunostomy)had a jejunal perforation treated surgically.One late complication,anastomotic stricture,was recorded that required two endoscopic dilatations.The median follow-up was 60 months(range:18–144 months).At final clinical follow-up,six patients had no eating problems,and two patients had some difficulties with eating(jejunostomy in situ),but they underwent logopedic therapy with improved outcomes.All patients had an increase in body weight and height postoperatively.Conclusion:Our small study reports the clinical experience of three Italian centers in which gastric transposition was performed with excellent results,both in terms of surgical technique(simplicity,reproducibility,complication rate)and clinical follow-up(good oral feeding of young patients,normal social life and regular growth curves).
