Metamagnetism in Nanosheets of CoII-MOF with TN at 26 K and a Giant Hysteretic Effect at 5 K

Abstract Maize (Zea mays L.) leaf phosphoenolpyruvate (PEP) carboxylase (PEPCase) (EC 4.1.1.31) showed a lag in activity when assayed after storage at 0-4 °C. The lag was promoted by high pH on storage (7.8 -8.5) and was observed over a range of assay pH (7.1 -8.5). Thermal reactivation of the cold-stored enzyme by assay temperature (18 °C) accounted for most of the hysteretic effect, but presence of PEP in the reaction mixture was required to completely eliminate the lag. Based on steady-state rates after the lag, stability of PEPCase in the cold was independent of protein concentration . It is suggested that low temperature and high pH induce a change in the oligomerization state of PEPCase, resulting in a less active but relatively stable form of the enzyme. The lag probably reflects a reversal of this process, promoted by assay temperature and presence of PEP.

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Hysteretic Effect of Step by Step Heating on the Restriction of Gelatinization of Legume Starch

Starch - Stärke ◽

10.1002/star.19870390707 ◽

1987 ◽

Vol 39 (7) ◽

pp. 241-246 ◽

Cited By ~ 1

Author(s):

K. Minagawa ◽

T. Ohkura ◽

G. Goshima ◽

Y. Miwa ◽

H. Tsuge

Keyword(s):

Hysteretic Effect ◽

Step Heating

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Hysteretic effects of dry friction: modelling and experimental studies

Philosophical Transactions of The Royal Society A Mathematical Physical and Engineering Sciences ◽

10.1098/rsta.2007.2125 ◽

2007 ◽

Vol 366 (1866) ◽

pp. 747-765 ◽

Cited By ~ 119

Author(s):

Jerzy Wojewoda ◽

Andrzej Stefański ◽

Marian Wiercigroch ◽

Tomasz Kapitaniak

Keyword(s):

Numerical Simulations ◽

Dry Friction ◽

Experimental Studies ◽

Friction Model ◽

Hysteretic Effect ◽

Motion Characteristic ◽

Friction Models ◽

Theoretical Analyses ◽

Friction Modelling

In this paper, the phenomena of hysteretic behaviour of friction force observed during experiments are discussed. On the basis of experimental and theoretical analyses, we argue that such behaviour can be considered as a representation of the system dynamics. According to this approach, a classification of friction models, with respect to their sensitivity on the system motion characteristic, is introduced. General friction modelling of the phenomena accompanying dry friction and a simple yet effective approach to capture the hysteretic effect are proposed. Finally, the experimental results are compared with the numerical simulations for the proposed friction model.

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Sliding mode observer based hysteresis compensation control for piezoelectric stacks

Transactions of the Institute of Measurement and Control ◽

10.1177/0142331220932398 ◽

2020 ◽

Vol 42 (14) ◽

pp. 2760-2770

Author(s):

Jiaming Hu ◽

Xiaojin Zhu ◽

Yubin Fang ◽

Zhiyuan Gao ◽

Yijia Zhou

Keyword(s):

Sliding Mode ◽

Piezoelectric Materials ◽

External Disturbance ◽

Linear Matrix ◽

Observation Error ◽

Hysteresis Compensation ◽

Compensation Control ◽

Hysteretic Effect ◽

Practical Engineering ◽

Piezoelectric Stacks

Piezoelectric stacks (PS) are wildly used as actuator mechanism for precise instrument in practical engineering. Nevertheless, hysteretic effect that is carried by the piezoelectric materials can degrade the control performance dramatically. For the purpose of improving the control precision, the problem of hysteresis compensation control for PS system is investigated in this paper. First, in order to compensate the hysteretic effect, two kinds of observers are proposed. The design of the observers has considered external disturbance and the creep effect in PS system. By utilizing Lyapunov function and linear matrix inequalities (LMI) technique, the observers can asymptotically estimate the hysteretic output with [Formula: see text] performance. Second, a hysteresis-compensation based back-stepping controller is established. The design of the controller has considered the observation error, and it has a certain robustness. At last, numerical and experimental simulations are carried out to verify the effectiveness of the proposed methods.

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Under-Actuated Humanoid Model With Elastomeric Springs

Volume 3: Vibration in Mechanical Systems; Modeling and Validation; Dynamic Systems and Control Education; Vibrations and Control of Systems; Modeling and Estimation for Vehicle Safety and Integrity; Modeling and Control of IC Engines and Aftertreatment Systems; Unmanned Aerial Vehicles (UAVs) and Their Applications; Dynamics and Control of Renewable Energy Systems; Energy Harvesting; Control of Smart Buildings and Microgrids; Energy Systems ◽

10.1115/dscc2017-5309 ◽

2017 ◽

Author(s):

Christian Fry ◽

Stanley Coram ◽

Davide Piovesan

Keyword(s):

Human Body ◽

Equilibrium Position ◽

Static Stability ◽

Viscous Damping ◽

Equivalent Viscous Damping ◽

New Model ◽

Design Iteration ◽

Hysteretic Effect

This paper presents the mechanical modifications and simulation of a bipedal humanoid system actuated with linear springs to produce a standing equilibrium position. The original humanoid system is comprised of two leg assemblies connected by a hip bracket. Eleven pairs of springs were attached to the system in locations designed to simulate the muscles and tendons in a human body. The next evolution of the LUIGEE project is the inclusion of three servo motors per leg and a series of elastomeric springs. Although servo motors have been introduced, it is desired to maintain the passive, static aspect of the previous prototype. This paper reports on part modifications to accommodate servo motors and the introduction of polymeric springs that guarantee static stability. ABS plastic and photopolymer resin was used to produce the new model. Due to the size of the motors, some parts of the original robot were redesigned. The new design iteration was stimulated using SimWise 4D®, where the hysteretic effect of rubber was modelled with an equivalent viscous damping.

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Improvement of Giant Magneto-Impedance Effect in Fe-Based Nanocrystalline Wires

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.284-286.2303 ◽

2011 ◽

Vol 284-286 ◽

pp. 2303-2306

Author(s):

Su Qin Feng ◽

Yin Feng Li ◽

Jian Yong Wang ◽

Chun Hui Feng ◽

Shuang Yi Zhao ◽

...

Keyword(s):

Tensile Stress ◽

Magnetic Sensors ◽

Substitution Effects ◽

Soft Magnetic ◽

Gmi Effect ◽

Annealing Conditions ◽

Field Sensitivity ◽

Hysteretic Effect ◽

Giant Magneto Impedance ◽

Magnetic Wires

In order to obtain materials with more ideal GMI effect, (DZ/Z）max, the substitution effects of R (R = Co, Ni and Cr) for Fe in Fe63.5R10Cu1Nb3Si13.5B9soft magnetic wires have been studied. We found that although the Finemet composition shown excellent GMI effect, the substitution of Co can raise notably the field sensitivity, Q, Ni makes a little improvements of (DZ/Z）max, and Q, and Cr diminishes the undesirable hysteretic effect. In additions, the influence of annealing conditions upon the GMI effect of the best composition Fe63.5Cr10Cu1Nb3Si13.5B9was also investigated. It indicated that the sample obtained by the ways of Joule heating under the application of suitable tensile stress exhibits 200% and 30%¤Oe for (DZ/Z）max and Q, respectively. This sample can serve as a proper choice for magnetic sensors.

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Temperature hysteretic effect and its influence on colossal magnetoresistance of La0.33Nd0.33Ca0.33MnO3

Pramana ◽

10.1007/s12043-002-0214-1 ◽

2002 ◽

Vol 58 (5-6) ◽

pp. 1041-1044

Author(s):

Darshan C Kundaliya ◽

Reeta Vij ◽

AA Tulapurkar ◽

U Vaidya ◽

R Pinto ◽

...

Keyword(s):

Colossal Magnetoresistance ◽

Hysteretic Effect

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Nonlinear Vibration Analysis of Machine-Tool Guideway System with Clearance

Advanced Engineering Forum ◽

10.4028/www.scientific.net/aef.2-3.661 ◽

2011 ◽

Vol 2-3 ◽

pp. 661-666 ◽

Cited By ~ 1

Author(s):

Hai Tao Luo ◽

Yu Wang Liu ◽

Hong Guang Wang ◽

Wei Jia Zhou

Keyword(s):

Machine Tool ◽

Frequency Effect ◽

Equivalent Stiffness ◽

Dynamics Model ◽

Equivalent Damping ◽

Use Of Time ◽

Double Period ◽

Hysteretic Effect ◽

Nonlinear Dynamics Model ◽

Dynamics Response

This paper studies hysteretic effect of machine-tool guideway system with clearance, establishes the nonlinear dynamics model of guideway system with symmetric clearance, and obtains the equivalent damping and equivalent stiffness coefficients using asymptotic method. With the use of time-domain graph, frequency-domain graph, phase trajectory figure, Poincare section figure, bifurcation diagram, and lyapunov exponent figure, the dynamics response of damping and external vibration frequency effect on system is studied. The result shows that the period, double-period and chaos movement will occur when the system parameters change in certain range.

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