Application and evaluation of LID facilities in sponge airport, China.

Low Impact Development (LID) is an important approach for the construction of sponge airports. There are few researches on the application of LID facilities in airports. This study mainly analyzes the application of LID facilities in airports, and analyzes the reduction rate of LID facilities on the total runoff, peak present time and peaking volume by constructing EPA Storm Water Management Model (SWMM) in the eastern work area of an airport, which is located in a coastal city in northern China. This study selected three kinds of LID facilities: green roof, bio-detention facility and permeable pavement. Then three LID scenarios were formed according to different layout ratios of facilities (30%-90%), and the effects of different scenarios under different design rainstorms are simulated and analyzed. The results show that the control effect of LID scenario is enhanced with the increase of the proportion of LID facilities. The control effect of LID scenario gradually weakened with the increase of rainfall intensity. For high-frequency rainstorm, the maximum reduction rates of total runoff and peaking volume are 30.89% and 25.58% respectively, and the peak present time delay rate is up to 28.57%. For low-frequency rainstorm, the maximum reduction rates of total runoff and peaking volume are 17.96% and 14.95% respectively, and the peak present time delay rate is up to 6.12%. The flood control effect is more obvious when the LID facilities and pipe network are combined under the condition of low-frequency heavy rain. These conclusions present the effects under different combination ratio of LID facilities. It can provide the technical reference for the design and application of LID facilities for sponge airport construction in the future.

[Analysis of composite traditional Chinese medicine constitution: an investigation of 974 volunteers].

OBJECTIVE: To explore the analysis methods for composite traditional Chinese medicine (TCM) constitutions. METHODS: The epidemiological data of TCM constitutions were collected from 974 volunteers via a cross-sectional survey. The samples were classified into 9 constitution types according to the maximal standardized scores of imbalanced constitutions. The correlation matrix of 9 constitutions was computed. The standardized scores of 9 constitutions of all the volunteers were ranked respectively, and the composite status of every two constitutions was observed using cross tabulation. The constitution types of all the volunteers were transformed into ternary code of 9 digits, and the composite status of 3 or more than 3 kinds of constitution types was analyzed. RESULTS: According to the maximal standardized scores of imbalanced constitutions, of 974 volunteers, 227, 148, 218, 102, 31, 81, 44, 97 and 26 volunteers had balanced constitution, qi-deficiency constitution, yang-deficiency constitution, yin-deficiency constitution, phlegm-dampness constitution, heat-dampness constitution, blood stasis constitution, qi-stagnation constitution, and inherited special constitution, respectively. The standardized scores of balanced constitution were negatively correlated with those of imbalanced constitutions, while there was a positive correlation between the standardized scores of every two imbalanced constitutions. Among the 8 imbalanced constitutions, one kind of imbalanced constitutions was usually complicated with another kind of imbalanced constitutions. The number of qi-deficiency constitution complicated with yang-deficiency constitution, qi-deficiency constitution complicated with yin-deficiency constitution, and yin-deficiency constitution complicated with yang-deficiency constitution ranked the top three. The constitution types of 974 volunteers were transformed into a total of 465 ternary codes, showing a total of 465 kinds of constitution types; the simplex constitution, the approximately simplex constitution, and the composite constitution of two or more than two types were found in 259, 130, and 585 volunteers, respectively. CONCLUSION: Cross tabulation can show the composite status of every two constitutions, while the ternary code can show the composite status of three or more than three constitutions.

Primary anaplastic solitary fibrous tumor of the tentorium cerebelli.

Meningeal solitary fibrous tumors (MSFT) have been described in about 80 patients as benign spindle-cell neoplasms, with few anaplastic variants. We report a 57-year-old male patient with a 4-month history of progressive headache caused by a primary anaplastic MSFT arising from the tentorium cerebelli. MRI revealed a tentorium-based tumor that extended into the occipital lobe superiorly and into the cerebellum inferiorly on the left. Following gross total resection of the tumor and postoperative radiotherapy, the patient experienced symptomatic improvement with no recurrence at the 12-month follow-up. The final tumor pathology was consistent with an anaplastic MSFT, with a Ki-67 proliferative index of 25%.