Graphene and transition metal dichalcogenides(TMDs), two-dimensional materials, have been investigated wildely in recent years. As a member of the TMD family, MoTe2 possesses a suitable bandgap of ~1.0 eV for near inf...Graphene and transition metal dichalcogenides(TMDs), two-dimensional materials, have been investigated wildely in recent years. As a member of the TMD family, MoTe2 possesses a suitable bandgap of ~1.0 eV for near infrared(NIR)photodetection. Here we stack the MoTe2 flake with two graphene flakes of high carrier mobility to form a graphene–MoTe2–graphene heterostructure. It exhibits high photo-response to a broad spectrum range from 500 nm to 1300 nm. The photoresponsivity is calculated to be 1.6 A/W for the 750-nm light under 2 V/0 V drain–source/gate bias, and 154 mA/W for the 1100-nm light under 0.5 V/60 V drain–source/gate bias. Besides, the polarity of the photocurrent under zero Vds can be efficiently tuned by the back gate voltage to satisfy different applications. Finally, we fabricate a vertical graphene–MoTe2–graphene heterostructure which shows improved photoresponsivity of 3.3 A/W to visible light.展开更多
Objective: The objective of the study is to investigate the effect of Kangfuxin lotion as adjunctive therapy for treating ulcerative colitis(UC) through a systematic review and meta?analysis of randomized controlled ...Objective: The objective of the study is to investigate the effect of Kangfuxin lotion as adjunctive therapy for treating ulcerative colitis(UC) through a systematic review and meta?analysis of randomized controlled trials(RCTs). Materials and Methods: RCTs comparing Kangfuxin lotion with no treatment, placebo, western medications or combination therapy for treatment of UC were included in this study. Two English and three Chinese electronic databases were searched. All searches ended in December 2017. Data and quality assessment carried out respectively. Rev Man 5.2 software(Copenhagen, The Nordic Cochrane Centre, The Cochrane Collaboration, 2014) was used to analyze with effect estimate presented as mean difference(MD), risk ratio(RR) and 95% confidence interval(CI). Results: Fifteen trials with 1050 participants were included in this review. Overall, 13 trials were eligible for meta?analysis. Kangfuxin lotion combined with Mesalazine was better than Mesalazine on clinical cure rate(RR 1.45, 95% CI 1.24–1.70, 7 trials), recurrence rate of UC(RR 0.22, 95% CI 0.07–0.72, 2 trials), or endoscopic mucosal recovery(RR 8.05, 95% CI 2.64–24.57, 2 trials). And Kangfuxin lotion combined with triple live bacteria tablets(Bifidobacterium-Lactobacillus? Streptococcus thermophilus)was superior with regard to symptoms remission rate(RR 5.36, 95% CI 1.73–16.60, 3 trials), endoscopic disease activity score(MD-2.30, 95% CI-2.64–-1.96, 1 trial). There were no reports on the serious adverse events of Kangfuxin lotion. Conclusion: Kangfuxin lotion as adjunctive treatment appears more effective than medications alone on clinical cure rate, recurrence rate, endoscopic mucosal recovery and improvement rate of related symptoms.展开更多
基金Project supported by the National Natural Science Foundation of China(Grant No.21405109)the Seed Foundation of State Key Laboratory of Precision Measurement Technology and Instruments,China(Pilt No.1710)
文摘Graphene and transition metal dichalcogenides(TMDs), two-dimensional materials, have been investigated wildely in recent years. As a member of the TMD family, MoTe2 possesses a suitable bandgap of ~1.0 eV for near infrared(NIR)photodetection. Here we stack the MoTe2 flake with two graphene flakes of high carrier mobility to form a graphene–MoTe2–graphene heterostructure. It exhibits high photo-response to a broad spectrum range from 500 nm to 1300 nm. The photoresponsivity is calculated to be 1.6 A/W for the 750-nm light under 2 V/0 V drain–source/gate bias, and 154 mA/W for the 1100-nm light under 0.5 V/60 V drain–source/gate bias. Besides, the polarity of the photocurrent under zero Vds can be efficiently tuned by the back gate voltage to satisfy different applications. Finally, we fabricate a vertical graphene–MoTe2–graphene heterostructure which shows improved photoresponsivity of 3.3 A/W to visible light.
基金supported by Capacity Building in Evidence-based Chinese Medicine and Internationalization Project(1000061020008)
文摘Objective: The objective of the study is to investigate the effect of Kangfuxin lotion as adjunctive therapy for treating ulcerative colitis(UC) through a systematic review and meta?analysis of randomized controlled trials(RCTs). Materials and Methods: RCTs comparing Kangfuxin lotion with no treatment, placebo, western medications or combination therapy for treatment of UC were included in this study. Two English and three Chinese electronic databases were searched. All searches ended in December 2017. Data and quality assessment carried out respectively. Rev Man 5.2 software(Copenhagen, The Nordic Cochrane Centre, The Cochrane Collaboration, 2014) was used to analyze with effect estimate presented as mean difference(MD), risk ratio(RR) and 95% confidence interval(CI). Results: Fifteen trials with 1050 participants were included in this review. Overall, 13 trials were eligible for meta?analysis. Kangfuxin lotion combined with Mesalazine was better than Mesalazine on clinical cure rate(RR 1.45, 95% CI 1.24–1.70, 7 trials), recurrence rate of UC(RR 0.22, 95% CI 0.07–0.72, 2 trials), or endoscopic mucosal recovery(RR 8.05, 95% CI 2.64–24.57, 2 trials). And Kangfuxin lotion combined with triple live bacteria tablets(Bifidobacterium-Lactobacillus? Streptococcus thermophilus)was superior with regard to symptoms remission rate(RR 5.36, 95% CI 1.73–16.60, 3 trials), endoscopic disease activity score(MD-2.30, 95% CI-2.64–-1.96, 1 trial). There were no reports on the serious adverse events of Kangfuxin lotion. Conclusion: Kangfuxin lotion as adjunctive treatment appears more effective than medications alone on clinical cure rate, recurrence rate, endoscopic mucosal recovery and improvement rate of related symptoms.
