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Biomedical subjects

A D Jackson

Publications and source records attributed to A D Jackson.

9 recordsLinked to original sources
PubMed1991

The effect of aluminum coating on elemental standards in X-ray microanalysis.

The standardisation of frozen hydrated bulk biological specimens using gelatin standards is described. The relationship between corrected elemental X-ray counts and ionic concentration was found to be linear, and minimum detectable limits for each element are stated. Variations in uncorrected standard curves were found to be due to changes in aluminium coating thickness. There was an inverse relationship between coating thickness and elemental X-ray counts. The factors causing this are discussed. To avoid errors arising from inconsistent aluminium thickness, experimental material should only be compared with standards of similar aluminium net counts. This can be achieved most easily by mounting and analysing specimen and standard together.

Aluminum↗
PubMed1977

A controlled trial of baclofen in children with cerebral palsy.

A double-blind crossover trial against placebo was conducted to assess the effects of the GABA derivative, baclofen, on the disabilities due to muscle spasticity in twenty children suffering from cerebral palsy. Baclofen performed very significantly better than placebo in reducing spasticity and significantly better than placebo in allowing both active and passive limb movements to be carried out. Notable improvement was also seen in scissoring. Side-effects were minimal and responded promptly to dose reduction. The evaluation of drug effects on muscle spasticity and the pharmacodynamics of baclofen are discussed. Recommendations are made regarding dosage of baclogen in childhood.

Adolescent↗
PubMedDate not supplied

Dimensional accuracy of two denture base processing methods.

The mucosal surfaces of maxillary complete dentures processed using the SR-Ivocap injection technique and the Lucitone heat-polymerized compression molding technique were compared to a metal master impression to determine if one method of denture processing produced a more accurate denture base. Comparisons were made before and after polishing the prepared bases to determine if changes occur as a result of this procedure. The dental comparator, described by Rupp and others in 1957, was used to compare selected points on the palatal surface of the denture bases. No statistical differences were found in the accuracy of the denture bases processed using either of the two techniques.

Dental Casting Technique↗