Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Y J Kingma"'
Publikováno v:
Gut. 32:141-146
The ability of transcutaneous recordings of gastric electrical activity to detect gastric electrical abnormalities was determined by simultaneous measurements of gastric electrical activity with surgically implanted serosal electrodes and cutaneous e
Publikováno v:
Journal of physiology and pharmacology : an official journal of the Polish Physiological Society. 42(1)
Our aims were to describe the myoelectrical activity in the single very thin layer of muscle of the canine gallbladder. The study was performed on 22 freshly removed canine gallbladders. Electrical activity was studied by the single sucrose-gap metho
Publikováno v:
Medical & Biological Engineering & Computing. 18:253-260
Three magnetic susceptibility meters forin vivo measurements of hepatic iron were built based on the same principle as that ofBauman andHoffman (1967). One system used Invar in the magnetic path, one used ferrite, and the third used air. Systems with
Publikováno v:
Digestion. 36:168-174
Gastric emptying of both solid- and liquid-phase markers was assessed in 7 normally-menstruating women who had undergone bilateral Fallopian tube ligations. The women were studied once during the follicular phase of their menstrual cycle and again du
Publikováno v:
Gut. 27:293-299
Extracellular electrical and contractile activities were recorded in vitro from strips of human colonic smooth muscle obtained at the time of surgery. Serosal electrical activity of longitudinally oriented strips from the taenia and intertaenial regi
Publikováno v:
American Journal of Physiology-Gastrointestinal and Liver Physiology. 239:G128-G132
Strain gauges are often used for the measurement of contractile activity of muscle tissue. In these cases the strain gauge is used as a force measuring device. Because of its stiffness, the strain-gauge-type transducer resists changes in length produ
Autor:
Y. J. Kingma
Publikováno v:
Mathematics and Computers in Simulation. 10:76-79
This paper describes an analog computer method for designing dead beat controllers for linear and nonlinear sampled data system. In this method the output of the digital controller is replaced by the output from a special function generator. Thus the
Autor:
V. Dvorak, Y. J. Kingma
Publikováno v:
International Journal of Electronics. 30:1-17
A negative resistance tunnel diode oscillator, the linear part of which consists of two mutually coupled parallel resonant circuits, is investigated for the case where the coupling between the circuits is varied in time. Two critical values of coupli
Autor:
S. J. Deitch, Y. J. Kingma
Publikováno v:
International Journal of Control. 12:577-591
A method is developed for application of the Tsypkin criterion and the Jury and Lee stability criteria for certain classes of non-linear sampled data systems The method, which uses root-locus techniques, is based on the root-locus interpretation of t
Autor:
Y. J. Kingma
Publikováno v:
Journal of Hydraulic Research. 8:329-339
A novel optical probe is used as the sensor of an automatic hydraulic model contour follower. The sensor consists of a light source, a split lightpipe, and a photodiode. With an electromechanical servo system the probe is kept at a fixed, small dista