In this sample we showed that PPPD was more represented in female patients, the age of onset was 40-60 years old, the majority of patients had sleep disorders, anxiety was the main mood disorder to be identified, and personality analysis found that neurotic personality may be the risk factor for developing PPPD. Further large scale studies are suggested in China.
The {AsW12O40} clusters are grafted into Ag-MOF to yield two 3D polyoxometallate-based metal organic frameworks (POMOFs), (imi)2[{Ag3(tpb)2}2(H2O){AsW12O40}2]·6H2O (1) and [(Ag7bpy7Cl2){AsWV2WVI10O40}]·H2O (2) (imi = imidazole; tpb = 1, 2, 4, 5-tetrakis...
Mesoporous ZSM-5 zeolites were directly synthesized by desilication−recrystallization of silicalite-1 with NaAlO 2 as Al source and TPAOH as template. The fabrication mechanism of mesopores was studied based on the different crystal size of silicalite-1 and liquid-to-solid ratio. This revealed that TPA + played a protective role in the controllable desilication while Na + induced the production of mesopores during the recrystallization. When silicalite-1 with a crystal size of 200 nm was treated in a liquid-to-solid ratio of 10 mL/g, hollow structured nano-ZSM-5 with many mesopores (∼23 nm) in the shell was produced and its external surface area reached 121 m 2 g −1 . In comparison, homogeneous mesopores (∼15 nm) were introduced into the bulk of micro-ZSM-5 under a higher liquid-to-solid ratio of 30 mL/g, providing a maximal external surface area of 171 m 2 g −1 . The catalytic lifetime reached 192 h in methanol to hydrocarbons reaction at a weight hourly space velocity of 4.7 h −1 , four times greater than that of the micro-ZSM-5 synthesized via the traditional hydrothermal synthesis.
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