This paper intends to realize negative refraction with absorption suppressed by the electromagnetically induced transparency (EIT) in a dense four-level atomic system.Without the two equal transition frequencies respo...This paper intends to realize negative refraction with absorption suppressed by the electromagnetically induced transparency (EIT) in a dense four-level atomic system.Without the two equal transition frequencies responding to the probe field,the atomic system displays a negative refraction with the simultaneously negative permittivity and negative permeability (left-handedness).The response of the probe field is amplified and propagates transparency in some frequency extents.Therefore,our aim for searching the low-loss negative refraction can be achieved in the scheme,given the main applied limitation of the negative refractive materials is the large amount of dissipation and absorption.However,an excessive signal field intensity would increase the absorption near the resonance in our scheme.展开更多
Objective： To observe the effect of acupoint injection with Neostigmine Methylsulfate at Zusanli（ST 36） on gastrointestinal function of patients after laparoscopic cholecystectomy.Methods： Totally 120 patients und...Objective： To observe the effect of acupoint injection with Neostigmine Methylsulfate at Zusanli（ST 36） on gastrointestinal function of patients after laparoscopic cholecystectomy.Methods： Totally 120 patients undergone laparoscopic cholecystectomy were randomized into an acupoint injection group, a muscular injection group, and a blank control group at 1：1：1 by random number table, 40 cases in each group. The blank control group was intervened by conventional post-operation treatment, the acupoint injection group was by acupoint injection with Neostigmine Methylsulfate 2 m L at bilateral Zusanli（ST 36） in addition to the treatment given to the blank control group, and the muscular injection group was by muscular injection with Neostigmine Methylsulfate 2 m L in addition to the treatment given to the blank control group. The two injection groups both received injection twice a day, totally for 3 d at most. The restored time of bowel sounds, initial flatulence time, defecation time and clinical efficacy were observed. Results： After treatment, there were significant differences in comparing the restored time of bowel sounds among the three groups（F=17.30, P〈0.05）, the acupoint injection group and muscular injection group were significantly different from the blank control group（P〈0.05）, and there was a significant difference between the acupoint injection group and muscular injection group（P〈0.05）; there were significant differences in comparing the initial flatulence time among the three groups（F=19.12, P〈0.05）, and the acupoint injection group was significantly different from the muscular injection group and the blank control group（P〈0.05）; there were significant differences in comparing the initial defecation time among the three groups（χ^2=21.23, P〈0.05）, while the difference between the acupoint injection group and muscular injection group was statistically insignificant（P〈0.05）. The total effective rate was 87.5% in the acupoint injection group, versus 72.5% in the muscular injection group and 60.0% in the blank control group, and there were significant differences among the three groups（P〉0.05）. Conclusion： Acupoint injection with Neostigmine Methylsulfate at Zusanli（ST 36） can shorten the restored time of bowel sounds and flatulence time in patients undergone laparoscopic cholecystectomy, and the efficacy is more significant compared to muscular injection with Neostigmine Methylsulfate.展开更多
基金supported by the National Natural Science Foundation of China (Grant Nos.60768001 and 10464002)
文摘This paper intends to realize negative refraction with absorption suppressed by the electromagnetically induced transparency (EIT) in a dense four-level atomic system.Without the two equal transition frequencies responding to the probe field,the atomic system displays a negative refraction with the simultaneously negative permittivity and negative permeability (left-handedness).The response of the probe field is amplified and propagates transparency in some frequency extents.Therefore,our aim for searching the low-loss negative refraction can be achieved in the scheme,given the main applied limitation of the negative refractive materials is the large amount of dissipation and absorption.However,an excessive signal field intensity would increase the absorption near the resonance in our scheme.
文摘Objective： To observe the effect of acupoint injection with Neostigmine Methylsulfate at Zusanli（ST 36） on gastrointestinal function of patients after laparoscopic cholecystectomy.Methods： Totally 120 patients undergone laparoscopic cholecystectomy were randomized into an acupoint injection group, a muscular injection group, and a blank control group at 1：1：1 by random number table, 40 cases in each group. The blank control group was intervened by conventional post-operation treatment, the acupoint injection group was by acupoint injection with Neostigmine Methylsulfate 2 m L at bilateral Zusanli（ST 36） in addition to the treatment given to the blank control group, and the muscular injection group was by muscular injection with Neostigmine Methylsulfate 2 m L in addition to the treatment given to the blank control group. The two injection groups both received injection twice a day, totally for 3 d at most. The restored time of bowel sounds, initial flatulence time, defecation time and clinical efficacy were observed. Results： After treatment, there were significant differences in comparing the restored time of bowel sounds among the three groups（F=17.30, P〈0.05）, the acupoint injection group and muscular injection group were significantly different from the blank control group（P〈0.05）, and there was a significant difference between the acupoint injection group and muscular injection group（P〈0.05）; there were significant differences in comparing the initial flatulence time among the three groups（F=19.12, P〈0.05）, and the acupoint injection group was significantly different from the muscular injection group and the blank control group（P〈0.05）; there were significant differences in comparing the initial defecation time among the three groups（χ^2=21.23, P〈0.05）, while the difference between the acupoint injection group and muscular injection group was statistically insignificant（P〈0.05）. The total effective rate was 87.5% in the acupoint injection group, versus 72.5% in the muscular injection group and 60.0% in the blank control group, and there were significant differences among the three groups（P〉0.05）. Conclusion： Acupoint injection with Neostigmine Methylsulfate at Zusanli（ST 36） can shorten the restored time of bowel sounds and flatulence time in patients undergone laparoscopic cholecystectomy, and the efficacy is more significant compared to muscular injection with Neostigmine Methylsulfate.
