PubMed Health⌕ Search

Biomedical subjects

Y Ogushi

Publications and source records attributed to Y Ogushi.

12 recordsLinked to original sources
PubMed1989

A computerized standard flow-generator for spirometer calibration.

We analyzed the dynamic characteristics of a newly designed standard flow generator (SFG) to be used for spirometer calibration. The SFG consisted of a computer, large-bore cylinder, and piston driven by a high torque motor. The computer develops numerical equations to simulate a flow-volume pattern with different convexities of the descending limb. The excursion of the piston was processed according to the computer-developed equation. The computer's numerical solutions were compared to those of the SFG and agreement of the values of the peak flow, forced expiratory volume, and flow-volume pattern was satisfactory in repeated trials. Application of an external resistive load (3.5 cm H2O/sec) did not change the flow output. However, there were several minor disagreements due to the dynamic characteristics of the SFG. In an emphysema pattern the ascending limb of the generated flow-volume curve flattened and the descending limb was less convex compared to the preset pattern. When the SFG was generating sinusoidal waves of high frequency (e.g., 10.0 Hz) the flow output was deformed. The newly designed SFG was used to examine the dynamic characteristics of rolling-seal spirometers. There was an overshoot of the peak flow, over-convection, and oscillations of the descending limb in the spirometer output. These deformations were more prominent with the severe emphysema pattern. It is concluded that the SFG can be very useful in the examination and calibration of spirometers.

Computers↗
PubMed1978

Computer-assisted system for a mycobacteria tuberculosis laboratory using MUMPS.

A Laboratory Information System (LIS) has been developed and the main part of LIS is an on-line system with auto analysers. In April 1976, the Biochemistry Laboratory was computerized in Osaka Prefectural Habikino Hospital. This LIS uses a PDP 11/40 minicomputer system using MUMPS language. At present a Mycobacteria Tuberculosis Laboratory (MTL) is computerized using the same computer and MUMPS. In this laboratory, there is no auto analyser, so this computerization aims at saving on labour in paper work and increasing the reliability of test results. This paper shows that the computerization of MTL with no auto analyser can be effectively achieved using MUMPS.

Computers↗
PubMed1978

The optimal design of MUMPS global file.

This paper presents the basic consideration of global file design on MUMPS language. The major goal of global design is to reduce the number of disc accesses made over the long-term use of a file. To attain this goal, the procedure for finding the global file which minimizes the average number of disc blocks accessed to obtain a data node is proposed. Furthermore, the total number of blocks in use with file design are demonstrated by simple examples.

Computers↗