Air pollution exposure during preconception and first trimester of pregnancy and gestational diabetes mellitus in a large pregnancy cohort, Hebei Province, China.

Objective: To explore the relationship between the exposure level of particulate matter 2.5 (PM2.5) and particulate matter 10 (PM10) in the air of pregnant women during preconception and first trimester of pregnancy and the risk of gestational diabetes mellitus (GDM).

The impact of metabolic surgery on natural conception rates in women with infertility, obesity and polycystic ovary syndrome: a retrospective study.

Background: Women with obesity and polycystic ovary syndrome (OPOS) are at high risk for infertility. However, the reproductive effects of metabolic surgery on women with infertility and OPOS have not been fully elucidated.

Objectives: We investigated the natural conception rates after metabolic surgery, and the variables associated with infertility in women with OPOS.

Separating Leaf and Wood Points in Terrestrial Laser Scanning Data Using Multiple Optimal Scales.

The separation of leaf and wood points is an essential preprocessing step for extracting many of the parameters of a tree from terrestrial laser scanning data. The multi-scale method and the optimal scale method are two of the most widely used separation methods. In this study, we extend the optimal scale method to the multi-optimal-scale method, adaptively selecting multiple optimal scales for each point in the tree point cloud to increase the distinctiveness of extracted geometric features.

Declining global warming effects on the phenology of spring leaf unfolding.

Earlier spring leaf unfolding is a frequently observed response of plants to climate warming. Many deciduous tree species require chilling for dormancy release, and warming-related reductions in chilling may counteract the advance of leaf unfolding in response to warming. Empirical evidence for this, however, is limited to saplings or twigs in climate-controlled chambers.

Knowledge, attitudes, and practice behaviors of oncology advanced practice nurses regarding advanced care planning for patients with cancer.

Purpose/objectives: To establish initial reliability and validity of a Web-based survey focused on oncology advanced practice nurses' (APNs') knowledge, attitudes, and practice behaviors regarding advanced care planning, and to obtain preliminary understanding of APNs' knowledge, attitudes, and practice behaviors and perceived barriers to advanced care planning.

Design: Descriptive, cross-sectional, pilot survey study.

Setting: The eastern United States.

Optimizing vitamin D status to reduce colorectal cancer risk: an evidentiary review.

Vitamin D deficiency is common in the general public and in patients with cancer. Optimizing vitamin D intake is increasingly recognized in cancer risk reduction, particularly in decreasing colorectal cancer risk. Therefore, summarizing the current evidence to promote best practices related to vitamin D intake and colorectal cancer risk reduction is important.