Perinatal outcomes of singleton live births after preimplantation genetic testing during single frozen-thawed blastocyst transfer cycles: a propensity score-matched study.

Objective: To determine whether singleton pregnancy achieved after preimplantation genetic testing (PGT) is associated with a higher risk of adverse perinatal outcomes than in vitro fertilization (IVF)/intracytoplasmic sperm injection (ICSI) singleton pregnancy.

Design: A retrospective cohort study.

Setting: A university-affiliated fertility center.

[Occurrence, Distribution, and Ecological Risk Assessment of Pharmaceutical and Personal Care Products in the Aquatic Environment of Sanya City, China].

The occurrence, distribution, and risk of 11 typical pharmaceutical and personal care products(PPCPs) were investigated in the major rivers and bay areas of Sanya City. The results showed that the significant seasonal variations in eleven PPCPs in major rivers of the city were affected by intense tourism alongside reduced annual runoff. In winter, all 11 PPCPs had 100% detection frequencies, of which CFI had the highest concentration at 1449.

[Effects of Eliminating Backward Production Capacities on Reduction of Dioxin Emissions in Key Industries].

Phase-out of backward production facilities can significantly reduce the emissions of unintentional persistent organic pollutants from the industrial thermal process. An estimation of reduced dioxin emissions due to closure of backward production capacities is valuable to objectively evaluate China's efforts in and contribution to performing the Stockholm Convention on Persistent Organic Pollutants. Our group previously evaluated environmental effects of the phase-out of backward production facilities on dioxin emissions from 2006 to 2009.

[Estimation of Co-benefits from Pollution Emission Reduction by Eliminating Backward Production Capacities in Hainan Province].

Industrial structural adjustment plays a significant role in achieving the pollution reduction goals in China. It is an optimal choice for Hainan Province to promote industrial structure upgrading and build a "national demonstration area for ecological civilization construction". The emission factor method was used to estimate co-benefits of pollution emission reduction through closure of backward production capacities as a result of industrial structural adjustment policies.