Determination of placental growth factor (PlGF) levels in healthy pregnant women without signs or symptoms of preeclampsia.

Objective: To identify a reference range for placental growth factor (PlGF) in normotensive women without symptoms or signs of preeclampsia.

Study Design: Comprising the study cohort were 247 term pregnancies without preeclampsia or adverse neonatal outcomes from 16 sites in the US and Canada. Serial plasma samples were collected in 6 gestational age (GA) intervals between 20+0 and 40+0weeks.

Airborne observations of vegetation and implications for biogenic emission characterization.

Measuring hydrocarbons from aircraft represents one way to infer biogenic emissions at the surface. The focus of this paper is to show that complementary remote sensing information can be provided by optical measurements of a vegetation index, which is readily measured with high temporal coverage using reflectance data. We examine the similarities between the vegetation index and in situ measurements of the chemicals isoprene, methacrolein, and alpha-pinene to estimate whether the temporal behavior of the in situ measurements of these chemicals could be better understood by the addition of the vegetation index.