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Biomedical subjects

R L Montgomery

Publications and source records attributed to R L Montgomery.

At least 37 records · Page 2Linked to original sources
PubMed1984

The homemaker needs of the rural frail elderly from a client versus agency perspective.

The clients, aides, and staff of a homemaker services program for the rural frail elderly were individually interviewed concerning client's met and unmet needs. While the overall response from all three groups suggested a highly effective program, significant differences existed among the three groups with regard to what they considered the most important needs, both met and unmet by the program. It was concluded that although the perceptions of all three groups of participants in such programs might differ, such differences may not necessarily work to undermine the program.

Aged↗
PubMed1978

An X-ray diffraction comparison of myelins from the human nervous system.

Earlier small-angle X-ray diffraction studies have indicated that central and peripheral nerve myelins may be significantly different structurally, although relatively few examples for each system and for individual species have been examined. In order to understand better the intra- and inter-system relationships, this study has developed more extensive information for a single species: six cases centrally and ten peripherally, featuring cranial nerves and a few others of the human nervous system. Peripheral myelin spacings (membrane pair thicknesses) are relatively similar, 184.4 +/- 1.40 A, and the ratios of diffraction peak height intensities of the second to fourth orders are also closely bunched: 1.85 +/- 0.216. Central myelin spacings and intensity ratios are distinctly different and more variable: spacings 160.3-165.8 A and intensity ratios 2.81-4.46. It appears that within a given species or between closely related (e.g., mammalian) species peripheral myelins possess relatively invariant structures, though significant spacing declines are encountered for both systems as phylogenetic relationships become more distant. The observed greater variability of CNS structures within a single species may correspond to known compositional differences between CNS regions or result from observational difficulties. In any case there is a marked discontinuity between the myelin structures of CNS and PNS nerves.

Adolescent↗