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Biomedical subjects

M J Allen

Publications and source records attributed to M J Allen.

At least 163 records · Page 9Linked to original sources
PubMed1981

A randomized trial to assess childhood circumcision with the Plastibell device compared to a conventional dissection technique.

A randomized trial of routine circumcision in children using the Plastibell device is described and compared to a dissection suturing technique. One hundred children were studied with a mean age of 4.7 years. The device was applicable to all boys up to the age of 8, and a few older. General discomfort was carefully assessed and slightly less common after plastibell circumcision, but dysuria more so. No serious complication was encountered with either method; infection was slightly more common after the conventional procedure. Cosmetic results were similar for both methods. It is concluded that the Plastibell device is a satisfactory method for circumcising children of this age.

Child↗
PubMed1980

Conservative management of finger tip injuries in adults.

A prospective trial was undertaken on fifty consecutive patients with a total of sixty finger tip injuries treated by conservative means at the Leicester Royal Infirmary Accident and Emergency Department. The injuries have been classified into groups and results reviewed after a period of one year.

Finger Injuries↗
PubMed1979

The current status of auotomobile running lights.

The results of a number of studies of the use of lights to make a vehicle more visible have shown that they are effective. Accident studies have shown a drop in accidents from 7 to 59%. Only one of the studies used properly designed and positioned presence and signal lights and yielded 59% fewer accidents. It is concluded that a 50% or greater reduction of accidents is probable when using a high mounted 360 degrees visibility signal and running light combination.

Accidents, Traffic↗
PubMed1979

Highway tests of photochromic lenses.

A highway study of clear, tinted and photochromic prescription spectacles was conducted using a 58-mile driving course marked with 130 randomly spaced transverse white stripes. The data of 29 subjects totaling more than 21,000 stripe detection events showed that coated photochromic prescription lenses performed better by day and poorer by night compared to uncoated white crown prescription lenses, and that a multiple-layer coated, tinted lens (Neo Multicoat) performed at least as well, day or night, as did the uncoated white crown lens.

Automobile Driving↗
PubMed1978

Spatial problem-solving strategies as functions of sex.

Sex differences in spatial ability may be related to different problem-solving methods. Two spatial tests, Choosing A Path and Witkin's Rod and Frame Test, and related strategy questionnaires were given to 50 male and 50 female adults. Multivariate analyses of variance on the strategy questionnaires were significant. Women were more likely to use concrete and unorganized methods and to give up or skip problems. Spearman correlations between the males' and females' rank orders of strategies were high and significant, so that both similarities and differences between the sexes were demonstrated.

Adolescent↗
PubMed1978

Strength of association between sex and field dependence.

An index of the strength of association between sex and each of two measures of field dependence, the Rod and Frame Test and Embedded Figures Test, was calculated based upon reported significant sex differences on these measures. Median omega2 values based upon 20 rod-and-frame results and 18 embedded-figures results are .11 for the former and .12 for the latter. It appears that gender accounts for less than 15% of the variance in field-dependence scores.

Adolescent↗
PubMed1977

A new dark adaptometer.

A dark adaptometer that was designed for student-laboratory use is described and advocated for use in optometric practice because of its simplicity, accuracy, and low cost. Representative dark-adaptation results obtained from 2 naive and 2 sophisticated subjects are presented.

Dark Adaptation↗
PubMed1976

The automatic occluder, a new concept.

An electro-mechanical occluder is described for use in treating problems of binocular vision. A number of methods of achieving the automatic occluder goal are reviewed. Early results of clinical studies now in progress indicate that the "autocluder" has unique clinical usefulness.

Adult↗
PubMed1975

Waxed windshields are hazardous in the rain.

Seven automobiles were washed and waxed at four car washes. Photographic determinations were made of the glare produced by the wet or dry waxed windshield in a headlight beam. When wet, the waxed windshields scattered three times more light than in the normal human eye. The wet wax scattering was 24.8 times higher than when dry. No wax residues should be permitted on windshields and the National Highway Traffic Safety Administration should issue a mandatory windshield cleaning requirement after waxing.

Automobile Driving↗
PubMed1972

Amylolytic isoenzymes of Thermoactinomyces vulgaris.

Thermoactinomyces vulgaris strain 5 produced two electrophoretically different alpha-amylases. Precipitation with ammonium sulfate and acetone did not alter the electrophoretic mobilities of either amylase isoenzyme. Patterns of the hydrolysis products of amylose by the two amylase isoenzymes were essentially identical.

Acetone↗