BackgroundAlthough surveys conducted in Western countries have shown that the levonorgestrel-releasing intrauterine system (LNG-IUS; Mirena®) is well accepted by European women, its acceptance by Chinese women is not yet clearly known. The purpose of this study was to analyze the experiences and levels of satisfaction with Mirena among Chinese women living in 12 different cities.MethodsIn total, 1,021 women who attended 21 medical centers for insertion of Mirena were invited to complete a questionnaire regarding their contraceptive decision at baseline (preinsertion), and two further questionnaires on their experience and satisfaction with Mirena at 3–6 months and 1 year after insertion.ResultsAt baseline, 36% of women self-reported heavy or very heavy menstrual bleeding, while 41% reported normal bleeding. The majority of women (98%) were satisfied with the preinsertion counseling, during which contraceptive reliability was identified as the most important reason for considering Mirena. Continuation rates for Mirena were 99% at 3–6 months and 93% at 12 months after insertion, and most women (92% and 93%, respectively) had less bleeding at these times. The percentage of women who rated Mirena as better than their previous contraceptive method was 63%. Overall, around 90% of respondents were very satisfied or rather satisfied with Mirena, and 64% stated that they would recommend it to their friends.ConclusionThese data suggest that continuation and satisfaction rates with Mirena were very high, and that the device is well accepted by Chinese women.

The conversion of nitroaromatics to aminobenzene plays an important role in the synthesis of medicines or fine chemicals. In this work, we successfully prepared Cu2O/Au nanocubes with different Au content for the reduction of 4‐nitrophenol. With the increase of gold precursor concentration or reaction time, the density of Au nanoparticles (NPs)on Cu2O surface increases, which results in the stronger electron transfer between Au and Cu2O, and thus the better synergistic catalytic performance of Cu2O/Au nanoparticles toward 4‐Nitrophenol (4‐NP). In this work, we found the Au component in the nanoparticles played an important role in charge redistribution and transfer, as well as the adsorption and reduction of 4‐NP. Therefore, the degradation performance of Cu2O/Au composite is better than that of pure Cu2O, and the degradation rate of 4‐NP can reach almost 90 % in 10 min, therefore providing a new idea for the rational design of effective nanocatalysts.