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J D Morris

Publications and source records attributed to J D Morris.

51 records · Page 3Linked to original sources

Field work experience ratings and certification examination scores as predictors of job performance and satisfaction in occupational therapy.

The American Occupational Therapy Association's certification instruments, the Certification Examination for Occupational Therapists Registered and the Field Work Performance Report, were examined in terms of their ability to predict future job performance and satisfaction of occupational therapists. A job satisfaction questionnaire was administered to 208 occupational therapists, and their supervisors rated them on a job performance instrument. The resulting correlations between these work adjustment variables and the previously administered certification instruments failed to reveal any predictive ability. Some plausible reasons for these negative results and possible directions for further research into this professional screening process were explored.

Certification↗

A different approach for the total correction of tricuspid atresia.

A new surgical procedure has been used successfully to correct tricuspid atresia in a 9-year-old girl. An external conduit containing a porcine aortic valve was positioned to lead from the right atrium to the underdeveloped right ventricle. The right ventricle was reconstructed with a large Dacron patch, thus providing a large cavity for the small hypoplastic right ventricle. The atrial and ventricular septal defects were closed. The patient made a satisfactory recovery and is doing well four months after the operation.

Cardiac Catheterization↗

A common sequence of calcium and pH signals in the mitogenic stimulation of eukaryotic cells.

When normal quiescent (G0) cells are stimulated by mitogens to enter the cell cycle, the metabolic derepression which occurs is similar in a variety of cells. The mechanisms initiating these responses and their relationship to subsequent progression through G1 to DNA synthesis in S phase, however, are generally undefined. The clearest evidence has been obtained in sea urchin eggs, where fertilization by sperm causes a rapid, transient increase in the concentration of free cytoplasmic Ca2+ [(Ca]i), followed by a sustained increase in cytoplasmic pH (pHi). It has been demonstrated clearly that these ionic responses are obligatory for progression to DNA synthesis by the normal pathway after fertilization, although the Ca2+ signal can be bypassed by parthenogenetic agents which elevate directly pHi (for example, NH+4 ions). These observations raise the questions of whether other eukaryotic cells show the same sequence of ionic responses when stimulated by mitogens and whether such signals are an obligatory component of their mitogenic pathways. We show here that a common sequence of [Ca]i and pHi responses occurs in both quiescent mouse thymocytes and Swiss 3T3 fibroblasts stimulated by appropriate mitogens. Furthermore, 'opportunistic' mitogens (those that do not act on the cells in vivo, such as concanavalin A (Con A), the Ca2+ ionophore A23187 and 12-o-tetradecanoyl phorbol 13-acetate CTPA] that are mitogenic for both mouse thymocytes and 3T3 fibroblast, each produce characteristic ionic responses that are the same in both types of cell.

Animals↗