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801.
Environmental Science and Pollution Research - Studying the effects of precipitation on carbon exchange in grassland ecosystems is critical for revealing the mechanisms of the carbon cycle. In this...  相似文献   
802.
Journal of Polymers and the Environment - In this study eco-friendly composite films were prepared based on poly(vinyl alcohol) (PVA) containing different content of Basella alba stem extract (BA)...  相似文献   
803.
微生物异化Fe(Ⅲ)还原是指以Fe(Ⅲ)为末端电子受体在无氧条件下氧化有机物的产能过程,而铁元素是地壳中丰度最高的元素之一,因此,异化Fe(Ⅲ)还原在生物地球化学循环中起着重要的作用。文章围绕异化Fe(Ⅲ)还原机制,综述了国内外有关异化Fe(Ⅲ)还原在有机污染物(尤其是难降解有机污染物)、营养物质(N,P)等环境污染治理中的研究现状及其发展趋势,并对其进行了评述和展望,以期为特定污染物在环境污染治理中的实际应用提供参考依据。  相似文献   
804.
Environmental Science and Pollution Research - In this study, a multimethodological analysis involving optical and physical/chemical diagnostic techniques and 3D photogrammetric survey was...  相似文献   
805.
Environmental Science and Pollution Research - Human biomonitoring studies are of increasing importance in regulatory toxicology; however, there is a paucity of human biomonitoring data for the...  相似文献   
806.

Objective

Ultrasound assessment of the fetal anatomy and fetal echocardiography are feasible in the first trimester of pregnancy. This study was designed to assess the performance of a comprehensive fetal anatomy assessment in a high-risk population at a tertiary fetal medicine unit.

Methods

A retrospective review of high-risk patients undergoing comprehensive fetal anatomy ultrasound assessment between 11 weeks and 13 + 6 weeks of gestation was conducted. Findings of the early anatomy ultrasound scan were compared with those of the second trimester anatomy scan, and birth outcomes or post-mortem results.

Results

Early anatomy ultrasounds were performed in 765 patients. The sensitivity of the scan for detecting fetal anomalies compared to the birth outcome was 80.5% (95% CI 73.5–86.3) and specificity was 93.1% (95%CI 90.6–95.2). Positive and negative predictive values were 78.5% (95% CI 71.4–84.6) and 93.9% (95% CI 91.4–95.8), respectively. The most missed and overdiagnosed abnormalities were ventricular septal defects. The second trimester ultrasound had sensitivity of 69.0% (95% CI 55.5–80.5) and specificity of 87.5% (95% CI 84.3–90.2).

Conclusions

In a high-risk population, early assessments had similar performance metrics as the second trimester anatomy ultrasound. We advocate for a comprehensive fetal assessment in the care of high-risk pregnancies.  相似文献   
807.
Environmental Science and Pollution Research - The transition to a circular economy is a key concern for the fashion industry. The emerging second-hand market is a practice that could enable the...  相似文献   
808.
Environmental Science and Pollution Research - The paper examines how environmental, social, and governance (ESG), including management incentives, influence a firm’s financial performance....  相似文献   
809.
Food and Environmental Virology - Hepatitis E virus (HEV) is responsible for acute hepatitis in humans, through foodborne, zoonotic, and waterborne transmission routes. This study aimed to assess...  相似文献   
810.
Environmental Science and Pollution Research - Studies have proven that client satisfaction (CS) is greatly affected by the nature of construction practices on site. However, not much attention has...  相似文献   
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