Probability of survival based on etiology of cardiopulmonary arrest in pediatric patients.

Objective: To aggregate data across institutions to identify, characterize, and differentiate potential survivors from nonsurvivors based on etiology of event.

Aim: To evaluate the association of the cardiopulmonary resuscitation (CPR) duration and probability of survival (Ps), stratified by etiology of arrest.

Background: In-hospital cardiac arrests occur in 2-6% of pediatric patients with poor survival rates resulting in significant expenditures of time and resources.

Nitric oxide-assisted atmospheric pressure corona discharge ionization for the analysis of automobile hydrocarbon emission species.

Nitric oxide reagent gas has been found to improve the sensitivity and robustness of the atmospheric pressure corona discharge ionization (APCDI) process. Sensitivity has been increased by a factor of 20-100, depending on the compound, over APCDI without nitric oxide. The robustness (defined as the sensitivity to matrix interferences) of APCDI in the presence of water has been improved by a factor of 3 over normal APCDI.

The relationship between gasoline composition and vehicle hydrocarbon emissions: a review of current studies and future research needs.

The purpose of this paper is to review current studies concerning the relationship of fuel composition to vehicle engine-out and tail-pipe emissions and to outline future research needed in this area. A number of recent combustion experiments and vehicle studies demonstrated that reformulated gasoline can reduce vehicle engine-out, tail-pipe, running-loss, and evaporative emissions. Some of these studies were extended to understand the fundamental relationships between fuel composition and emissions.

Highly chlorinated dimethanofluorenes in technical chlordane and in human adipose tissue.

Several new components of technical chlordane were discovered using electron capture, negative ionization gas chromatographic mass spectrometry. These compounds have 10-12 chlorines and are produced by the condensation of three cyclopentadiene molecules. The most abundant compound has a molecular weight of 606 and has the elemental composition C15H6Cl12.