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Biomedical subjects

A Rotem

Publications and source records attributed to A Rotem.

9 recordsLinked to original sources
PubMed1992

Pigmented epithelial tumours of the conjunctiva.

Two out of 60 conjunctival epithelial tumours reviewed between 1973 and 1989 were found to be pigmented. One tumour was a pigmented papilloma and the other a pigmented squamous cell carcinoma. The melanin pigment was found in epithelial tumour cells as well as in macrophages, dendritic melanocytes, and Langerhans cells. The distinction between the latter two types of cells was possible in one of the tumours only. Both tumours were found in dark-skinned white patients without any evidence of conjunctival acquired melanosis.

Adult↗
PubMed1979

Intern training in New South Wales.

The process of intern training in New South Wales is at present undergoing critical examination. This article is a brief review of the status of intern training in Australia and New Zealand as revealed by a survey of accredited hospitals and the medical boards. Also reported are the results of a questionnaire widely distributed to the medical profession in New South Wales which sought its views on the nature of, and problems with, the internship.

Attitude of Health Personnel↗
PubMed1979

How can I improve my teaching?

There is nothing mysterious about improving teaching. To learn to teach better teachers should: (a) be prepared and motivated to learn; (b) consider their needs and interests in order to specify whay they want to learn; (c) secure feedback and information in relation to the performance or skill they want to learn; and (d) try new teaching methods suggested by the feedback.

Australia↗
PubMed1979

Attitides towards peer review.

The Australian Commonwealth Minister for Health called on the Australian Medical standards in Australia. Among the initial responses of the AMA was the organization of a National Seminar of Peer Review. Participants were asked to identify questions they would like to have answered about peer review and about aspects of a peer review system which they would perceive as necessary for its acceptability. Responses to these questions are analyzed and discussed. Implications for the introduction of peer review in Australia are examined, and strategies for gaining the commitment of the profession to the implementation of peer review are suggested.

Attitude of Health Personnel↗
PubMedDate not supplied

Effective diffusivity of galactose in calcium alginate gels containing immobilized Zymomonas mobilis.

The effective diffusivity of galactose was measured for calcium alginate gel membranes containing immobilized live Zymomonas mobilis cells at concentrations ranging from 0 to 150 g dry wt/L of gel. Since galactose is not taken up by living Z. mobilis organisms, the diffusion of this representative six-carbon sugar could be studied independently of sugar consumption. Various immobilized biomass loadings were achieved by two different techniques: addition of biomass at known concentrations to the sodium alginate solution before membrane formation and growth of cells in the gel to various biomass concentrations. The highest immobilized cell concentration, attained by in situ growth, corresponds to the maximum of this system, as growth beyond this maximum concentration led to disintegration of the gel membrane. The galactose effective diffusivity measurements for both methods of immobilized cell loading overlap within experimental error and follow the same general monotonic decline with entrapped biomass concentration. Most of the data fall below the upper bound predicted by Hashin and Shtrikman (1962) and show good agreement with the random pore model of Wakao and Smith (1962, 1964). Available effective diffusivity data from the literature provide evidence that the random pore model is an excellent predictor of sugar effective diffusivity in gel immobilized cell systems in general.

Alginates↗