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Biomedical subjects

J W Wheeler

Publications and source records attributed to J W Wheeler.

14 recordsLinked to original sources
PubMed1997

Primary care, process improvement, and turmoil.

The current health care environment in the United States is in turmoil, especially in regions that are further ahead in the transition from free-for-service to managed care. This article examines turmoil within primary care during a health-maintenance-organization-sponsored and federally funded randomized trial of using continuous quality improvement for adult clinical preventive services. The external and internal changes in structure and leadership occurring in primary care clinics are profound and prevalent. The sponsors of the project have responded to the turmoil by encouraging greater leadership involvement within the clinic and by supporting more skill building for change management.

Adult↗
PubMed1988

Metasternal gland secretion of the locust tree borer, Megacyllene robiniae (Coleoptera: Cerambycidae).

1. The volatile components of metasternal gland extracts of male and female Megacyllene robiniae have been analyzed by gas chromatography-mass spectroscopy. 2. The major component was identified as 2-(1,3-hexadien-1-yl)-5-methyltetrahydrofuran, a new natural product. 3. 1-Phenylethanol is present only in male extracts. 4. Acetates of hexadecanol and octadecanol are also present.

Animals↗
PubMed1982

Developmental trends in the phonemic organization of individual words.

Research with adults indicates that the visual-phonemic representation linked to individual words has a characteristic organization. This structure conforms to a serial pattern, with word beginnings functionally more important than word endings, which, in turn, are functionally more important than word middles. The present experiments were designed to identify possible developmental trends in this organization. The results of two experiments indicated that the adult pattern is apparent for nonreading first graders, but only if the words being learned are monosyllabic. Going grade by grade, the typical adult pattern for bisyllabic words did not emerge clearly until the fifth grade. These findings suggest that the serial organization for individual words is established before children learn to read, and that the pattern emerges for more complex words when they become integrated into more holistic units.

Adolescent↗
PubMed1975

Cyclopentyl ketones: identification and function in Azteca ants.

The anal gland secretions of dolichoderine ants in the genus Azteca are fortified with cyclopentyl ketones. Since these compounds, 2-methylcyclopentanone, cis-1-acetyl-2-methylcyclopentane, and 2-acetyl-3-methylcyclopentene, release sustained alarm behavior in ant workers, they constitute a new chemical class of insect pheromones. The ketones probably also function as defensive compounds and thus are part of the ants' alarm-defense system.

Animals↗
PubMed1975

Sensory and meaning features in stimulus recognition and associative retrieval.

Three experiments addressed the problem of isolating the effects of sensory similarity on subprocesses involved in coding paired associates. In the first, the standard recognition-recall procedure was used and stimulus similarity, concreteness, and frequency were varied. However, because of concern with the validity of this recognition procedure as a measure of functional stimulus contact, an alternative was developed. This alternative led to the second study in which only stimulus similarity was manipulated. In the third experiment, similarity was varied, and the pairs were either associatively compatible, unrelated, or incompatible. The results using the new procedure indicated that similarity consistently disrupted functional stimulus contact but not associative retrieval. By contrast, associative relatedness facilitated both subprocesses.

Adolescent↗
PubMedDate not supplied

Additional sulfur compounds from the anal glands of the striped polecat, Ictonyx striatus (Mustelidae, Mammalia).

Two sulfur compounds have been identified in the anal gland secretions of captive-raised adults of the striped polecat (Ictonyx striatus), an African mustelid. 3-Ethyl-1,2-pentanedithiolane was observed in the secretions of an adult male and an adult female. 1,3-Pentanedithiol was observed in the male; this compound has not previously been reported from mustelid anal glands.

Anal Canal↗
PubMedDate not supplied

Insect and mammalian pheromones.

Novel organic chemicals, as well as many simple molecules, are used by insects as defensive materials. Social insects (e.g., ants and bees) utilize alarm pheromones consisting of terpenes and other smaller organic compounds. Moths and butterflies, as well as a few beetles, have been studied extensively for their sex attractants. Since the initial structure proofs of civetone and muscone by Ruzicka in 1926, little mammalian pheromone research has been published. Recently, deer, antelope, hyena, skunk, gerbil, monkey, and human scents have been investigated.

Alcohols↗