Rare-Earth Elements as Natural Tracers for In Situ Remediation of Groundwater.

The utility of rare-earth elements (REEs) as natural geochemical tracers for the analysis of groundwater remediation was examined in several example permeable reactive barriers (PRBs). The PRBs utilize zero-valent iron and organic carbon plus limestone mixtures for contaminant treatment. Zero-valent iron removed REEs from groundwater to below detection levels (2-4 ng/L) and subsequent rebound of REE concentrations in regions down-gradient of the treatment zones was not observed.

Passy muir valve tolerance in medically complex infants and children: Are there predictors for success?

Objective: The aim of this study was to investigate if there are predictors for success with Passy Muir Valve (PMV) placement for medically complex pediatric patients.

Methods: Retrospective chart review of 52 pediatric patients with a tracheostomy with or without ventilator dependence who received PMV assessments from October 2017 through October 2018 in intensive care units and acute care units within Children's Healthcare of Atlanta (Atlanta, GA). Univariate analysis and logistic regression modeling were used to identify factors associated with a successful PMV trial.

Multimodal fluorescence molecular imaging for in vivo characterization of skin cancer using endogenous and exogenous fluorophores.

Similarity of skin cancer with many benign skin pathologies requires reliable methods to detect and differentiate the different types of these lesions. Previous studies have explored the use of disparate optical techniques to identify and estimate the invasive nature of melanoma and basal cell carcinoma with varying outcomes. Here, we used a concerted approach that provides complementary information for rapid screening and characterization of tumors, focusing on squamous cell carcinoma (SCC) of the skin.

How rapid assessment at triage can improve care outcomes.

As the number of patients who present at emergency departments (EDs) increases (Australian College for Emergency Medicine 2005), ED staff are coming under greater pressure to assess, treat and discharge patients within time limits. This article describes the introduction of a rapid assessment team in an ED in Adelaide, Australia, which assesses patients at triage and treats them until space is available in the main department, thereby improving access and patient flow.

Segregate or cooperate- a study of the interaction between two species of Dictyostelium.

Background: A major challenge for evolutionary biology is explaining altruism, particularly when it involves death of one party and occurs across species. Chimeric fruiting bodies of Dictyostelium discoideum and Dictyostelium purpureum develop from formerly independent amoebae, and some die to help others. Here we examine co-aggregation between D.