Biomedical subjects

F Morisi

Publications and source records attributed to F Morisi.

14 recordsLinked to original sources

PubMed1980

Phenylalanine ammonia-lyase entrapped in fibers.

Phenylalanine ammonia-lyase extracted form Rhodotorula rubra (IFO 1101) was immobilized into cellulose triacetate fibers made hemocompatible by physical blend with a platelet anti-aggregating agent. The entrapped enzyme could operate at physiological values of phenylalanine and tyrosine reducing their level to traces within a few hours. The optimum pH value for the entrapped enzyme shifted from 8.0 to 9.0. At blood pH the activity was about 68 per cent of the maximum. The entrapped enzyme retained its original activity in blood for more than 50 days.

Ammonia-Lyases↗

PubMed1979

[Effects of low frequency vibrations on the human spine].

There is a general agreement in literature about effects of low frequency vibrations on spine in tractor drivers. Tractor drivers are exposed to noxious vibrations transmitted mostly by the seat. Spine generally presents a picture of degenerative lesions with higher incidence than in control groups. A statistical relation to the precocity of tractor driving can be shown.

Humans↗

PubMed1979

Monitoring of metabolites applying fibre-entrapped enzymes in a calorimetric system. I -- Glucose and urea determination.

A simple device, consisting of a heat sensor placed in close contact to fibres containing enzymes and connected to a temperature measuring unit has been developed. The system monitors the temperature variations due to the enzymatic reaction when substrate solutions flow through the measuring cell. Fibres containing the enzymes glucose oxidase and catalase for the determination of glucose and fibres containing urease for the determination of urea were tested. A linear relationship between the substrate concentration and the deltaT recorded was obtained in both cases.

Acetates↗

PubMed1978

Measurements in microscopic images: an inexpensive device for semi-automatic analysis of microscopic images.

Measurement of histological and cytological parameters can be performed much faster and more accurate by means of a semi-automatic device that is described in detail. The system consists mainly of a medium-sized computer and one or more peripheral terminals. Each terminal incorporates a special measurement table for data acquisition, a keyboard for manual data input, and an interface. The software program for the evaluation and storage of the digital data is simple to write and offers a high degree of flexibility to the user. The system can be operated in real time.

Computers↗

PubMed1977