scholarly journals Fast-acting electro-hydraulic digital valve by making use of a multilayered piezo-electric device (PZT).

1989 ◽  
Vol 20 (7) ◽  
pp. 604-610
Author(s):  
Shinichi YOKOTA ◽  
Kenichirou HIRAMOTO ◽  
Masaaki UENISHI
Keyword(s):  
Electric Device ◽  
Fast Acting ◽  
Piezo Electric

Anti-Overturning Control of a Serially Connected Isolation System Using Piezo Electric and MR Tube Support

2008 ◽  
Vol 56 ◽  
pp. 231-236
Author(s):  
Yong Feng Du ◽  
Yan Hui Liu ◽  
Hui Li
Keyword(s):  
Control Algorithm ◽  
Vibration Isolation ◽  
Control Device ◽  
Isolation System ◽  
Novel Device ◽  
Isolation Layer ◽  
Electric Device ◽  
Overturning Moment ◽  
Set Up ◽  
Piezo Electric

This paper presents a numerical simulation of anti-overturning control of serially connected isolation system using an imagined novel device by combining piezo electric foot and MR tube support. In the vibration isolation of a serially connected electric device which is a real project and was installed on an overhead frame, overturning was observed as a determinant failure mode. To counter for this overturning problem, several additional bolts were used in the isolation layer which decreased the isolation effect. This paper further proposed a semi-active solution using a device for providing anti-overturning moment without increasing the seismic response of the superstructure. This paper presents the idea of the control device set-up and provides a vibration control algorithm, as well the range of validity of parameters of the plant.

A Device for Magnification Measurement

1972 ◽  
Vol 30 ◽  
pp. 622-623
Author(s):  
J.A. Eades ◽  
A. van Dun
Keyword(s):  
Electron Microscope ◽  
Small Displacement ◽  
Private Communication ◽  
Piezoelectric Crystal ◽  
Double Exposure ◽  
Standard Methods ◽  
Elegant Method ◽  
The Right ◽  
Piezo Electric

The measurement of magnification in the electron microscope is always troublesome especially when a goniometer stage is in use, since there can be wide variations from calibrated values. One elegant method (L.M.Brown, private communication) of avoiding the difficulties of standard methods would be to fit a device which displaces the specimen a small but known distance and recording the displacement by a double exposure. Such a device would obviate the need for changing the specimen and guarantee that the magnification was measured under precisely the conditions used.Such a small displacement could be produced by any suitable transducer mounted in one of the specimen translation mechanisms. In the present case a piezoelectric crystal was used. Modern synthetic piezo electric ceramics readily give reproducible displacements in the right range for quite modest voltages (for example: Joyce and Wilson, 1969).

Purification of a Specific Placental Plasminogen Activator Inhibitor by Monoclonal Antibody and Its Complex Formation with Plasminogen Activator

1985 ◽  
Vol 53 (01) ◽  
pp. 122-125 ◽  
Author(s):  
B Åstedt ◽  
Ingegerd Lecander ◽  
T Brodin ◽  
A Lundblad ◽  
Karin Löw
Keyword(s):  
Monoclonal Antibody ◽  
Complex Formation ◽  
Plasminogen Activator ◽  
Plasminogen Activator Inhibitor ◽  
Tissue Type ◽  
System A ◽  
The One ◽  
Fast Acting ◽  
Chain Form ◽  
Activator Inhibitor

SummaryA monoclonal antibody of IgG2a-type was obtained against a specific fast acting plasminogen activator inhibitor found in placenta. The placental inhibitor was purified by affinity chromatography using the monoclonal antibody and additionally in a FPLC-system. A strong complex formation was found between the inhibitor and urokinase and also with the two-chain form of plasminogen activator of the tissue-type. A weaker complex was found between the placental inhibitor and the one- chain form of the tissue-type activator.

Resonant-type MEMS Magnetic Sensor with FePd Magneto-strictive and PZT Piezo-electric Films

2019 ◽  
Vol 139 (11) ◽  
pp. 383-384
Author(s):  
Naoki Okada ◽  
Koudai Suzuki ◽  
Takashi Mineta
Keyword(s):  
Magnetic Sensor ◽  
Piezo Electric
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