The maintenance management of urban landscape plants play an important role in bringing their landscape and ecological functions into full play.In this paper,analytic hierarchy process(AHP)was used to select 13 specif...The maintenance management of urban landscape plants play an important role in bringing their landscape and ecological functions into full play.In this paper,analytic hierarchy process(AHP)was used to select 13 specific indicators to construct the evaluation system of woody landscape plant maintenance effectiveness from 3 aspects of ornamental,growth status and soil condition combined with qualitative and quantitative analysis,with the aim to explore an effective and scientific method to evaluate the effectiveness of landscape plant maintenance.展开更多
A barotropic channel model in β-plane is used to study the effect of topographic forcing on the formation and maintenance of blocking. The approximate analytical solution of potential vorticity equation can show the ...A barotropic channel model in β-plane is used to study the effect of topographic forcing on the formation and maintenance of blocking. The approximate analytical solution of potential vorticity equation can show the main property of the whole process of blocking. It is indicated that the topographic forcing is one of the main factors causing the blocking process. The results suggest that the nonlinear interaction plays a very important role in the stable 'Ω' situation of blocking. The atmospheric circulation with periodic and low-frequency oscillation, perhaps, is partly caused by topographic forcing.展开更多
Objective: To evaluate the maintenance effect of probiotics versus that of aminosalicylates on ulcerative colitis. Methods: MEDLINE, EMBASE, the Cochrane Controlled Trials Register, and the Chinese Biomedical Database...Objective: To evaluate the maintenance effect of probiotics versus that of aminosalicylates on ulcerative colitis. Methods: MEDLINE, EMBASE, the Cochrane Controlled Trials Register, and the Chinese Biomedical Database were searched in English or Chinese. Data extracted were selected with strict criteria. Results: In six randomized controlled trials (RCTs), a total of 721 participants were enrolled and the maintenance effect of probiotics (n ? 364) versus that of aminosalicylates (n ? 357) on ulcerative colitis was investigated. No significant difference was observed between probiotics and aminosalicylate groups (relative risk (RR) ? 1.08; 95% confidence interval (CI): 0.91e1.28;P ? 0.40). Three RCTs compared the incidence of adverse events with probiotics versus those with aminosalicylates. No significant difference was observed in the incidence of adverse events between the two groups (RR ? 1.20;95%CI:0.92e1.56;P ? 0.17). Conclusions: Probiotics and aminosalicylates both showed a maintenance effect on ulcerative colitis. However, more well-designed RCTs are required.展开更多
基金Supported by the Research on the Evaluation System of Road Greening Maintenancethe Science and Technology Planning Project of the Urban Management Committee of Chongqing Municipality(YKZ2016-05)
文摘The maintenance management of urban landscape plants play an important role in bringing their landscape and ecological functions into full play.In this paper,analytic hierarchy process(AHP)was used to select 13 specific indicators to construct the evaluation system of woody landscape plant maintenance effectiveness from 3 aspects of ornamental,growth status and soil condition combined with qualitative and quantitative analysis,with the aim to explore an effective and scientific method to evaluate the effectiveness of landscape plant maintenance.
文摘A barotropic channel model in β-plane is used to study the effect of topographic forcing on the formation and maintenance of blocking. The approximate analytical solution of potential vorticity equation can show the main property of the whole process of blocking. It is indicated that the topographic forcing is one of the main factors causing the blocking process. The results suggest that the nonlinear interaction plays a very important role in the stable 'Ω' situation of blocking. The atmospheric circulation with periodic and low-frequency oscillation, perhaps, is partly caused by topographic forcing.
文摘Objective: To evaluate the maintenance effect of probiotics versus that of aminosalicylates on ulcerative colitis. Methods: MEDLINE, EMBASE, the Cochrane Controlled Trials Register, and the Chinese Biomedical Database were searched in English or Chinese. Data extracted were selected with strict criteria. Results: In six randomized controlled trials (RCTs), a total of 721 participants were enrolled and the maintenance effect of probiotics (n ? 364) versus that of aminosalicylates (n ? 357) on ulcerative colitis was investigated. No significant difference was observed between probiotics and aminosalicylate groups (relative risk (RR) ? 1.08; 95% confidence interval (CI): 0.91e1.28;P ? 0.40). Three RCTs compared the incidence of adverse events with probiotics versus those with aminosalicylates. No significant difference was observed in the incidence of adverse events between the two groups (RR ? 1.20;95%CI:0.92e1.56;P ? 0.17). Conclusions: Probiotics and aminosalicylates both showed a maintenance effect on ulcerative colitis. However, more well-designed RCTs are required.
