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Biomedical subjects

J F Quinn

Publications and source records attributed to J F Quinn.

At least 37 records · Page 2Linked to original sources
PubMed1989

Therapeutic touch as energy exchange: replication and extension.

This study replicated and extended previous published research which suggests that therapeutic touch involves an energy exchange. The theorem that eye and facial contact between therapeutic touch practitioners and subjects should not be necessary to produce the effect of anxiety reduction was deduced from the Rogerian conceptual system and tested. This theorem was not supported. Numerous explanations for the failure of the hypotheses to be supported are posited, among them the impact of the research design, effects related to the investigator as practitioner, and medication. The influence of medication in particular is so pervasive in the sample that it would seem to be the most reasonable explanation.

Adult↗
PubMed1987

Wave energy and intertidal productivity.

In the northeastern Pacific, intertidal zones of the most wave-beaten shores receive more energy from breaking waves than from the sun. Despite severe mortality from winter storms, communities at some wave-beaten sites produce an extraordinary quantity of dry matter per unit area of shore per year. At wave-beaten sites of Tatoosh Island, WA, sea palms, Postelsia palmaeformis, can produce > 10 kg of dry matter, or 1.5 x 10(8) J, per m(2) in a good year. Extraordinarily productive organisms such as Postelsia are restricted to wave-beaten sites. Intertidal organisms cannot transform wave energy into chemical energy, as photosynthetic plants transform solar energy, nor can intertidal organisms "harness" wave energy. Nonetheless, wave energy enhances the productivity of intertidal organisms. On exposed shores, waves increase the capacity of resident algae to acquire nutrients and use sunlight, augment the competitive ability of productive organisms, and protect intertidal residents by knocking away their enemies or preventing them from feeding.

Journal Article↗
PubMed1984

Early biochemical alterations induced by 2-acetylaminofluorene in rat liver.

Livers from rats fed the carcinogen 2-acetylaminofluorene (AAF) were analyzed at weekly or semiweekly intervals to correlate appearance of enzymatic markers in total liver homogenates with histochemical events accompanying formation of hyperplastic liver nodules. gamma-Glutamyltranspeptidase (gamma-GT)-positive foci appeared by day 11 and visible nodules were present by days 28-35. Specific activity of homogenate gamma-GT increased in parallel to formation of hyperplastic foci and nodules, declined and then rose again to 20-fold that of controls by day 77. Specific activity of ornithine decarboxylase increased in advance of that of gamma-GT, to a level of 8-fold above control during the period of formation of hyperplastic foci. An early response was a 2-fold rise in the specific activity of nucleoside diphosphate phosphatase during the first week of carcinogen administration. The specific activity of 5'-nucleotidase, known to increase during liver regeneration, declined as the animals aged and was not increased by the dietary AAF. The enzymatic alterations induced by AAF could not be mimicked by cell proliferation, diet stress or the hepatotoxicity induced by feeding 1.87% 4-acetamidophenol.

2-Acetylaminofluorene↗
PubMed1984

Therapeutic touch as energy exchange: testing the theory.

Previous investigators have suggested that the effects of therapeutic touch are the result of an energy exchange between the client and the nurse. In this investigation, the theory of energy exchange is viewed as part of the broader conceptual system proposed by Rogers. The theorem that the effects of therapeutic touch do not depend on actual physical contact is derived, tested, and supported via an experimental pretest-posttest design. Subjects treated with noncontract therapeutic touch demonstrated a significantly greater decrease in state anxiety than subjects treated with a mimic control intervention. Implications for further theory development are presented.

Adult↗
PubMed1983

Data compression techniques for CT image archiving.

Large digital files are inherent to computed tomography (CT) image data. The CT installations that routinely archive patient data are penalized computer time, technologist's time, tape, purchase, and file space. This paper introduces compression techniques that reduce the amount of tape needed to store image data and the amount of computer time to do so. The benefits delivered by this technique have also been applied to CT disk systems in which limited on-line memory requires compact file storage. Typical reductions of 40 to 50% of original file space are reported.

Computers↗
PubMed1980

Labor-force participation patterns of older self-employed workers.

Self-employed persons work in a less constrained environment than do most wage-and-salary employees. Generally they are not subject to compulsory retirement nor are they affected by institutional rules concerning labor supply. Data from the 1969 and 1971 interviews of the Retirement History Study show that the labor supply and retirement patterns of the self-employed are distinct from those of other workers. The self-employed (espeically "career" self-employed) nearing retirement age are less likely to be out of the labor force, and those who continue in the labor force have a wider variation in the number of hours worked per year. Downward flexibility in hours (the option for gradual retirement) may be an extremely valuable aspect of self-employed status, and one wonders whether other older workers would also choose this pattern if more flexible opportunities were available. Despite these differences, labor-supply decisions of the self-employed are found to be influenced by many of the same factors that affect the rest of the workforce--health, eligibility for social security and pension benefits, the wage rate, and the flow of asset.

Cross-Sectional Studies↗
PubMed1979

Wage determination and discrimination among older workers.

In this study, the determinants of the wage rates of a large sample of individuals aged 58 to 63 are first analyzed. Second, an explanation for the large discrepancies existing between the average wage rates earned by whites and nonwhites and by men and women is attempted. Human capital and geographic variables were found to be important wage determinants. Education, vocational training, years of job tenure, health, region of residence and local cost of living were significant explanators, especially for whites. Differences in these variables, however, cannot completely explain the wage differentials that exist by race and sex. There is a large unexplained component (especially in the male-female comparison) offering evidence of race and sex discrimination among older workers. In the case of sex discrimination, much of the problem appears to be occupational segregation--the crowding of women into low paying industries and occupations.

Age Factors↗