abstract：:The present study describes a new methodological approach which allows the separate analysis and quantitative determination of the viscous and elastic components of human hair using a computerised experimental system. In a first series of experiments subsequent to the estimation of the cross-sectional surface area of ...

journal_title：Medical & biological engineering & computing

authors： Nikiforidis G,Balas C,Tsambaos D

更新日期：1992-01-01 00:00:00

abstract：:A computer-controlled pump for use both in the study of vascular haemodynamics and in the calibration of clinical devices which measure blood flow is designed. The novel design of this pump incorporates two rack-mounted pistons, driven into opposing cylinders by a micro-stepping motor. This approach allows the product...

journal_title：Medical & biological engineering & computing

authors： Holdsworth DW,Rickey DW,Drangova M,Miller DJ,Fenster A

更新日期：1991-11-01 00:00:00

abstract：:During the study of velocities in the human ascending aorta it became necessary to establish a method for two-dimensional velocity profiles from discrete velocity data obtained from different heartbeats and with different techniques. A descriptive geometrical model was therefore developed and expanded to 16 elements e...

journal_title：Medical & biological engineering & computing

authors： Segadal L

更新日期：1991-09-01 00:00:00

abstract：:A new transducer has been developed, based on an inductive principle, for recording fetal movements and sounds. The compliance of this transducer, the INductive PHOno-sensor (INPHO), can be matched to that of the maternal abdomen to provide an optimal transfer of displacement between maternal abdomen and transducer. I...

journal_title：Medical & biological engineering & computing

authors： Goovaerts HG,van Geijn HP,Rompelman O,Mantel R,Swartjes JM

更新日期：1991-07-01 00:00:00

abstract：:A three-dimensional model of myocardial tissue has been developed which incorporates electrotonic interactions between neighbouring myocytes. The algorithms of the model are based on asynchronous planning of discrete events. Each cellular element is described in a logical way and traces a predefined action potential w...

journal_title：Medical & biological engineering & computing

authors： Malik M,Camm AJ

更新日期：1991-07-01 00:00:00

abstract：:A biphasic continuum model for the flow of intraocular fluid, the aqueous humour, in the trabecular meshwork is proposed in the paper. The model considers the meshwork as a circular ring with uniform thickness of homogeneous, isotropic, viscoelastic material swollen with continuously percolating aqueous humour. The mo...

journal_title：Medical & biological engineering & computing

authors： Tandon PN,Autar R

更新日期：1991-05-01 00:00:00

abstract：:A system is presented for the recording of physiological signals on an unmodified domestic videocassette recorder (VCR). A modification in the vertical synchronism pulses permits the recording of continuous analogue signals without significant loss of samples. The system allows up to 16 input channels, with a maximum ...

journal_title：Medical & biological engineering & computing

authors： Salvador CH,Rosende P,González MA

更新日期：1991-03-01 00:00:00

abstract：:When the microvascular blood perfusion in human skin is measured by photoplethysmography (PPG), infra-red light (800-960 nm) is normally used as the light source. The PPG signal, which consists of a pulsatile (AC) and a slowly fluctuating (DC) component, was studied at different optical wavelengths utilising optical f...

journal_title：Medical & biological engineering & computing

authors： Lindberg LG,Oberg PA

更新日期：1991-01-01 00:00:00

abstract：:A technique to obtain the spacing distribution of macro- and microstructures of hypercholestrolemic liver, lymphoidlucosed liver, rhinosporidium of man and ethmoidal tumour of bovine is presented. The method uses signal processing of spatially averaged spectra of ultrasonic backscattering from tissues in the frequency...

journal_title：Medical & biological engineering & computing

authors： Swarnamani S,Singh M

更新日期：1990-11-01 00:00:00

abstract：:Smoothing and differentiation of noisy signals are common problems whenever it is difficult or impossible to obtain derivatives by direct measurement. In biomechanics body displacements are frequently assessed and these measurements are affected by noise. To avoid high-frequency noise magnification, data filtering bef...

journal_title：Medical & biological engineering & computing

authors： D'Amico M,Ferrigno G

更新日期：1990-09-01 00:00:00

abstract：:An eye pointer was developed as a new line-of-sight displacement analyser. It analyses an observer's eye movements and superimposes their line of vision on a TV image which is the same as their view. A newly developed miniature colour field camera and very compact eye-movement sensors are attached to a translucent rei...

journal_title：Medical & biological engineering & computing

authors： Yamada M,Fukuda T,Hirota M

更新日期：1990-07-01 00:00:00

abstract：:Performance evaluations of ion-selective field-effect transistors (ISFETs) have been carried out using both quality-control materials and whole arterial blood samples. Comparison of the results from these evaluations suggests that the whole blood evaluation may be more useful when assessing the value of particular sen...

journal_title：Medical & biological engineering & computing

authors： Thompson JM

更新日期：1990-05-01 00:00:00

abstract：:The energy storage capacity of the human foot as a passive structure depends on both its geometry and elastic properties. The present study examines theoretically the relationship between the energy stored in the longitudinal arch and the inclination of the calcaneus, when a vertical load is applied. A simple two-dime...

journal_title：Medical & biological engineering & computing

authors： Simkin A,Leichter I

更新日期：1990-03-01 00:00:00

abstract：:When the rib cage and abdomen are compressed during cardiopulmonary resuscitation (CPR), the effect on intrathoracic pressure, and therefore on haemodynamics, cannot be quantitatively predicted without a physiologically based mathematical model of chest wall dynamics. Using such a model, we compared model simulations ...

journal_title：Medical & biological engineering & computing

authors： Ben-Haim SA,Shofti R,Dinnar U,Saidel GM

更新日期：1990-01-01 00:00:00

abstract：:A new method of quantifying dermal perfusion on a regional basis using a dynamic thermographic technique is investigated. The technique is based on the relationship between dermal perfusion and the rate of skin surface reheating following the application of a transient cold challenge predicted by a theoretical model. ...

journal_title：Medical & biological engineering & computing

authors： Wilson SB,Spence VA

更新日期：1989-09-01 00:00:00

abstract：:The paper describes an investigation in which it is shown that small positive voltage pulses applied to an external conductor placed against the photocathode of a photomultiplier tube can be used to switch the photocathode completely off for the duration of the pulses. This suggests that a photomultiplier tube with a ...

journal_title：Medical & biological engineering & computing

authors： Woldeselassie T

更新日期：1989-05-01 00:00:00

abstract：:A rapid-access but limited vocabulary communication aid for the non-vocal and speech impaired is useful in some well defined situations. The design and construction of such a device is described. Three distinct situations have been identified where an aid is essential and an initial evaluation has shown the Pocket Spe...

journal_title：Medical & biological engineering & computing

authors： Keating D,Smith DC,Evans AL,Wyper DJ,Cunningham E

更新日期：1989-05-01 00:00:00

abstract：:A new technique is derived for estimating the conduction velocity of muscle fibre action potentials from surface EMG recordings in humans. The method is based on system identification and extends previous such methods by explicitly accounting for additive noise at the output as well as at the input. Experimental and s...

journal_title：Medical & biological engineering & computing

authors： Rababy N,Kearney RE,Hunter IW

更新日期：1989-03-01 00:00:00

abstract：:Increasing costs in healthcare have stimulated discussions on whether installation of competent in-house service groups for equipment management could eventually aid in reducing expenditure. In the Federal Republic of Germany, a four-year programme was initiated in 1979 with the purpose of investigating the feasibilit...

journal_title：Medical & biological engineering & computing

authors： Irnich W

更新日期：1989-01-01 00:00:00

abstract：:Tooth mobility examination is important in planning dental treatment, as it may give an indication of alveolar bone loss and the condition of the periodontal ligament. In clinical dental diagnosis a manual tooth mobility examination is useful. However, its determination of tooth mobility is subjective and depends on t...

journal_title：Medical & biological engineering & computing

authors： Oka H,Yamamoto T,Saratani K,Kawazoe T

更新日期：1989-01-01 00:00:00