Potential interferences in photolytic nitrogen dioxide converters for ambient air monitoring: Evaluation of a prototype.

Unlabelled: Mixing ratios of the criteria air contaminant nitrogen dioxide (NO) are commonly quantified by reduction to nitric oxide (NO) using a photolytic converter followed by NO-O chemiluminescence (CL). In this work, the performance of a photolytic NO converter prototype originally designed for continuous emission monitoring and emitting light at 395 nm was evaluated. Mixing ratios of NO and NO (= NO + NO) entering and exiting the converter were monitored by blue diode laser cavity ring-down spectroscopy (CRDS).

A cross-cultural nursing experience on the Rosebud Reservation.

The study of diverse cultures is integral to a liberal arts education. To meet the needs of a changing society, nurse educators must develop strategies to improve nursing students' knowledge of how to provide culturally sensitive care. The author describes the development and implementation of a course with clinical.

Surgical treatment of subcutaneous calcifications of polymyositis or dermatomyositis.

The "tumoral" calcifications seen with polymyositis and dermatomyositis are frequently large and painful. Many surgeons believe such calcifications should not be removed surgically, arguing that the surgical trauma induces further calcification that is probably ever more severe. However, we believe that surgical removal of these large masses is less traumatic than cyclical, spontaneous extrusion of the calcium with secondary healing.

Lymphomatoid papulosis: a proposed treatment plan.

An example is presented of the chronic, nonhealing ulceration that may be present with lymphomatoid papulosis. A treatment plan is outlined, and the importance of long-term follow-up for signs of disseminated malignancy is emphasized.