Respectful Maternity Care in the United States-Characterizing Inequities Experienced by Birthing People.

Objective:  The purpose of this study is to understand experiences of respectful maternity care (RMC) from the perspective of birthing people in the United States from 2013 to 2018.

Methods:  We conducted an online cross-sectional survey of United States birthing people ages 18-50 in April 2018 using SurveyMonkey Audience. Quantitative survey data consisted of demographics and responses to RMC indicators.

Sedimentary pyrite sulfur isotope compositions preserve signatures of the surface microbial mat environment in sediments underlying low-oxygen cyanobacterial mats.

The sedimentary pyrite sulfur isotope (δ S) record is an archive of ancient microbial sulfur cycling and environmental conditions. Interpretations of pyrite δ S signatures in sediments deposited in microbial mat ecosystems are based on studies of modern microbial mat porewater sulfide δ S geochemistry. Pyrite δ S values often capture δ S signatures of porewater sulfide at the location of pyrite formation.

Self-assembly of highly ordered peptide amphiphile metalloporphyrin arrays.

Long fibers assembled from peptide amphiphiles capable of binding the metalloporphyrin zinc protoporphyrin IX ((PPIX)Zn) have been synthesized. Rational peptide design was employed to generate a peptide, c16-AHL(3)K(3)-CO(2)H, capable of forming a β-sheet structure that propagates into larger fibrous structures. A porphyrin-binding site, a single histidine, was engineered into the peptide sequence in order to bind (PPIX)Zn to provide photophysical functionality.