Two new species and one new combination of Helina Robineau-Desvoidy, 1830 (Diptera: Muscidae) from China

Two new species of the genus Helina Robineau-Desvoidy, 1830 from Sichuan, China are described and illustrated, i.e. Helina fulvibasicosta Ming-Fu Wang sp. n. and Helina flavipes Ming-Fu Wang&Chen Sun sp. n. After re-examining the holotype, Helina occidentalisinica Feng, Shi & Li, 2005 is transferred to the genus Hebecnema Schnabl

2-[(Adamantan-1-yl­amino)­meth­yl]phenol

The asymmetric unit of the title compound, C17H23NO, contains two independent mol­ecules. In both mol­ecules, the hy­droxy group is involved in the formation of an intra­molecular O—H⋯N hydrogen bond. In the crystal, there are two crystallographically independent chains of the mol­ecules propagating along the c axis and formed by weak inter­molecular N—H⋯O hydrogen bonds

Effects of online one-yuan Dutch auction on the seller’s revenue: Evidence from an online community for auctioning agricultural and subsidiary products in China

The traditional Dutch auction usually sets the starting price but does not set the final price. The effects and impact factors on the seller’s revenue have not been discussed if the final price of online Dutch auction is set to a teeny number (i.e., one RMB) which is termed as an one-RMB Dutch auction. Based on the regret theory and related literature, the effects of starting price, time pressure (one day and 15 minutes of time interval respectively) and product perishability on buyers\u27 choice behavior and the revenue of sellers were examined. The results showed that there is a negative effect coming from the starting price, time pressure and perishability of products and the overall discount rate of product auction; and buyers are more inclined to bid in the penultimate round of the price reduction cycle