Doppler Evaluation of Uterine Blood Flow in Patients with Unexplained Recurrent Pregnancy Loss.

Objective: This study aimed to analyze uterine artery and spiral artery hemodynamics in patients with unexplained recurrent pregnancy loss (URPL) with varying pregnancy outcomes.

Methods: 174 pregnant women with URPL and 144 pregnant women without adverse pregnancy histories were enrolled in this retrospective study. Based on pregnancy outcomes, these patients were divided into two groups: normal pregnancy outcomes (URPL-N, n=138) and adverse pregnancy outcomes (URPL-A, n=36).

Morphine induces HADHA succinylation, while HADHA desuccinylation alleviates morphine tolerance by influencing autophagy.

Morphine tolerance is an important factor in unsatisfactory analgesia. HADHA is a crucial enzyme in fatty acid β-oxidation. In this study, we investigated the potential significance of HADHA in a mechanism that might cause morphine tolerance related to functional changes in energy metabolism and further explored the effect of HADHA desuccinylation on morphine tolerance.

Disaster Preparedness and Associated Factors Among Emergency Nurses in Guangdong Province, China: A Descriptive Cross-Sectional Study.

Objective: The purpose of this study was to examine the prevalence of disaster preparedness and to explore associated factors among emergency nurses in Guangdong Province, China.

Methods: In this descriptive, cross-sectional study, the mainland China version of the Disaster Preparedness Evaluation Tool was used to collect data from 633 nurses working in 26 emergency departments, in August 2018. Descriptive analyses were used to examine the disaster preparedness, and multiple linear regression analysis was used to investigate associated factors.

Psychometric Evaluation of the Disaster Preparedness Evaluation Tool (DPET) on Emergency Nurses in Mainland China: Two Cross-Sectional Studies.

Background: Emergency nurses play a major role in disaster relief in mainland China, but there is no valid instrument to measure the extent of their disaster preparedness. The Disaster Preparedness Evaluation Tool is a reliable instrument to assess the disaster preparedness of nurse practitioners. The tool has been translated and validated in Saudi Arabia, Taiwan, China and the United States of America.

Insight the roles of loosely-bound and tightly-bound extracellular polymeric substances on Cu, Zn and Pb biosorption process with Desulfovibrio vulgaris.

The aim of this study is to explore the fate and mechanism of metal cations of biosorption in the Desulfovibrio vulgaris system (including bacterial cells and secreted loosely-bound extracellular polymeric substances (LB-EPS) and tightly-bound extracellular polymeric substances (TB-EPS)). The relative contribution of EPS (TB-EPS and LB-EPS) to the adsorption of three metal cations is much greater than that of bacterial cells, and the adsorption capacity of Pb on EPS (TB-EPS and LB-EPS) is much greater than that of Cu and Zn (Pb > Cu > Zn). The order of absorption capacity was as follows: LB-EPS > TB-EPS > bacterial cells, the adsorption contribution of EPS (including TB-EPS and LB-EPS) to Cu, Zn and Pb accounted for total adsorption capacity was 82%, 83% and 86%, respectively.

Coupling and coordinated development of new urbanization and agro-ecological environment in China.

Agricultural ecological environment conservation is a major strategic mission for the sustainable development of China's agriculture and rural areas at present. Therefore, it is of great significance to examine the coupling and coordination relationship between new urbanization and the agro-ecological environment, and, accordingly, to establish China's sustainable agro-economic development model. However, this topic has not been adequately addressed in previous studies.