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Biomedical subjects

M H Davis

Publications and source records attributed to M H Davis.

7 recordsLinked to original sources
PubMed1992

General dental practitioners' needs for continuing education on the management of fissure caries.

A process of identifying GDPs' perceptions of their needs for continuing education on one topic area is described. The method employed a combination of two traditional approaches for assessing educational needs, the so-called 'wisemen' approach and interviews with members of the target audience. The process identified three groups of GDPs with differing educational needs. Their perceptions of their educational needs are described, and the advantages and disadvantages of the process discussed and compared with other methods of assessing educational needs. The study confirmed the importance of identifying educational needs in the development of an educational programme.

Dental Fissures↗
PubMed1992

GDPs' and specialists' decisions in the management of fissure caries.

As part of a continuing education programme in dentistry, four specialists and 27 selected general dental practitioners were asked to rate 58 clinical management options relating to fissure caries in six simulated patient management problems called challenges. Their ratings are presented and the advantages and disadvantages of the approach are discussed. Areas of agreement and disagreement are highlighted and possible reasons for these explored.

Composite Resins↗
PubMed1992

Continuing education for general dental practitioners using a printed distance learning programme.

This paper describes the development of a printed distance learning programme by a coordinated team approach. The programme has two components, a resource book and three patient management problem leaflets or challenges and is designed to update general dental practitioners on the management of fissure caries. It includes strategies to meet the educational needs of three groups of general dental practitioners with different educational requirements. It is concluded that the approach described meets the CRISIS criteria for effective continuing education and offers a useful approach to distance learning in dentistry.

Education, Dental, Continuing↗
PubMed1990

Utilizing cognitive therapy on the short-term psychiatric inpatient unit.

Cognitive therapy as applied to the short-term psychiatric inpatient unit is explored. The authors provide an overview of the cognitive model and the utilization of cognitive-behavioral therapies for a variety of diagnostic categories. Adaptations of cognitive techniques to the inpatient unit are described and illustrated through case presentations.

Adaptation, Psychological↗
PubMed1988

Intravesicular pH changes in submitochondrial particles induced by monovalent cations: relationship to the Na+/H+ and K+/H+ antiporters.

The fluorescence of internalized fluorescein isothiocyanate dextran has been used to monitor the intravesicular pH of submitochondrial particles (SMP). Respiring SMP maintain a steady-state delta pH (interior acid) that results from the inwardly directed H+ flux of respiration and an opposing passive H+ leak. Addition of K+, Na+, or Li+ to SMP results in a shift to a more alkaline interior pH (pHi) in both respiring and nonrespiring SMP. The K+-dependent change in pHi, like the K+/H+ antiport in intact mitochondria, is inhibited by quinine and by dicyclohexylcarbodiimide. The Na+-dependent reaction is only partially inhibited by these reagents. Both the Na+- and the K+-dependent pH changes are sensitive to amiloride derivatives. The Km for both Na+ and K+ is near 20 mM whereas that for Li+ is closer to 10 mM. The K+/H+ exchange reaction is only slightly inhibited by added Mg2+, but abolished when A23187 is added with Mg2+. The passive exchange is optimal at pHi 6.5 with either Na+ or K+, and cannot be detected above pHi of 7.2. Both the Na+/H+ and the K+/H+ exchange reactions are optimal at an external pH of 7.8 in respiring SMP (pHi 7.1). Valinomycin stimulates the K+-dependent pH change in nonrespiring SMP, as does nigericin. It is concluded that SMP show K+/H+ antiport activity with properties distinct from those of Na+/H+ antiport. However, the properties of the K+/H+ exchange do not correspond in all respects to those of the antiport in intact mitochondria. Donnan equilibria and parallel uniport pathways for H+ and cations appear to contribute to cation-dependent pH changes in SMP.

Amiloride↗
PubMed1979

A restraining cage for instrumented rats.

A rectangular restraining cage for chronically instrumented rats was constructed of acrylic plastic. The cage allowed connections between implanted instrumentation and external recorders through a slot in the top cover. The cage was easy to load and unload through a removable cover plate, and the sidewall was adjustable to accommodate rats of diverse sizes. The cage was easy to dissemble for cleaning, and it was inexpensive.

Animals↗