The recognition and non-recognition of problem-solving stages in nursing practice.

A requirement for high-quality individualized nursing care is that nurses must recognize and attempt to solve patients' health problems. In this study, it was decided to investigate problem solving using a model similar to the nursing process derived from the general literature. Insight into nurses' perceptions and understanding of problem solving was gained by interviewing 116 nurses using vignettes of clinical problem solving.

Low molecular weight GTP-binding proteins in hepatocytes and an assessment of the role of p21ras proteins in the activation of phospholipase D.

A GTP-binding protein with an apparent molecular weight of 25 kDa was detected in hepatocyte extracts using SDS-PAGE and [alpha-32P]GTP. p21ras proteins could only be detected by immunological analysis. The amounts of p21ras proteins present in isolated hepatocytes and in a highly purified preparation of liver plasma membrane vesicles were 0.

The roles of phospholipase D and a GTP-binding protein in guanosine 5'-[gamma-thio]triphosphate-stimulated hydrolysis of phosphatidylcholine in rat liver plasma membranes.

1. Guanosine 5'-[gamma-thio]triphosphate (GTP[S]) stimulated by 50% the rate of release of [3H]choline and [3H]phosphorylcholine in rat liver plasma membranes labelled with [3H]choline. About 70% of the radioactivity released in the presence of GTP[S] was [3H]choline and 30% was [3H]phosphorylcholine.

Radon concentrations in five Pennsylvania soils.

The Rn concentration in the interstitial soil air depends on the Rn emanation from the soil, the water content of the soil, and the volume of the interstitial air space. The Rn emanation, which depends on the type of soil and the water content of the soil, can vary greatly from soil to soil. The interstitial air space depends on the soil compaction and the water content of the soil, so the Rn concentration can vary greatly from one soil type to another as well as within a given soil type.