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.

Giant keratoacanthomas.

A patient with multiple keratoacanthomas association with a well-differentiated squamous cell carcinoma is presented. Incomplete excision of a keratoacanthoma deprives the pathologist of his main criteria in differentiating this lesion from a squamous cell carcinoma. Wide excision appears to be the treatment of choice.

Subpectoral augmentation mammaplasty.

We have done subpectoral augmentations on 100 women to enlarge the small or hypomastic breast to a pleasing degree. These operations were performed in a major hospital operating room, under local anesthesia, on an ambulatory basis. No complications were encountered.

Dermal cylindroma (turban tumor). Case report.

We present an unusual case of massive dermal cylindroma (turban tumor), occupying the entire scalpand forehead. It was treated by a total scalping procedure and skin grafting in two stages. Additional tumors of the face, neck, chest, shoulders, and back were excised and closed.

Congenital giant nevi: clinical and pathological considerations.

A clinical and pathological review of 67 cases of congenital giant nevi and of 5 cases of malignant transformation in congenital giant nevi brings out the following. 1. The lesions should be regarded as premalignant.

Dynamic correction of unilateral paralysis of the lower lip.

We present a simple operation, performed under local anesthesia, to restore essential movement to the side of a lower lip paralyzed by injury to the mandibular branch of the facial nerve. The operation consists of a limited lateral resection of the paralyzed lower lip, plus transposition of the segment of orbicularis muscle from the paralyzed lower lip to the normal upper lip, through a subcutaneous tunnel.

Intralesional BCG, intravenous immune lymphocytes, and immunization with neuraminidase-treated tumor cells to manage melanoma; A clinical assessment.

An attempt was made to produce tumor immunity in 193 patients who had melanoma, 160 of whom had metastases and 33 of whom did not. Four stages of treatment are outlined. The patients whose disease was confined to the skin, subcutaneous tissues, and lymph nodes seemed to benefit most.