scholarly journals The Evolution of Matter as Revealed by the Radio-Active Elements

Nature ◽  
1904 ◽  
Vol 69 (1792) ◽  
pp. 418-419
Keyword(s):  
Active Elements

Strengthening mechanism of Si, V and Ti atoms to the Ag/AlN interface: a study from first-principles calculations

2020 ◽  
Vol 22 (46) ◽  
pp. 27433-27440
Author(s):  
Wenshan Bian ◽  
Runlin Li ◽  
Weibing Guo ◽  
Haitao Xue ◽  
Xiaoming Zhang
Keyword(s):  
First Principles ◽  
Strengthening Mechanism ◽  
Interfacial Bonding ◽  
First Principles Calculations ◽  
Active Elements

Active elements play key roles in improving the interfacial bonding between Ag-based fillers and AlN ceramics.

scholarly journals Nonlinear vibrations and time delay control of an extensible slowly rotating beam

2020 ◽  
Author(s):  
Jerzy Warminski ◽  
Lukasz Kloda ◽  
Jaroslaw Latalski ◽  
Andrzej Mitura ◽  
Marcin Kowalczuk
Keyword(s):  
Time Delay ◽  
Control Strategies ◽  
Vibration Reduction ◽  
Least Action ◽  
Active Elements ◽  
Principle Of Least Action ◽  
Second Mode ◽  
Delay Control ◽  
Speed Range ◽  
System With Time Delay

AbstractNonlinear dynamics of a rotating flexible slender beam with embedded active elements is studied in the paper. Mathematical model of the structure considers possible moderate oscillations thus the motion is governed by the extended Euler–Bernoulli model that incorporates a nonlinear curvature and coupled transversal–longitudinal deformations. The Hamilton’s principle of least action is applied to derive a system of nonlinear coupled partial differential equations (PDEs) of motion. The embedded active elements are used to control or reduce beam oscillations for various dynamical conditions and rotational speed range. The control inputs generated by active elements are represented in boundary conditions as non-homogenous terms. Classical linear proportional (P) control and nonlinear cubic (C) control as well as mixed ($$P-C$$ P - C ) control strategies with time delay are analyzed for vibration reduction. Dynamics of the complete system with time delay is determined analytically solving directly the PDEs by the multiple timescale method. Natural and forced vibrations around the first and the second mode resonances demonstrating hardening and softening phenomena are studied. An impact of time delay linear and nonlinear control methods on vibration reduction for different angular speeds is presented.

scholarly journals Recognize Yourself—Innate Sensing of Non-LTR Retrotransposons

Viruses ◽  
2021 ◽  
Vol 13 (1) ◽  
pp. 94
Author(s):  
Justine Lagisquet ◽  
Kilian Zuber ◽  
Thomas Gramberg
Keyword(s):  
Pattern Recognition ◽  
Nucleic Acid ◽  
Autoimmune Diseases ◽  
Ltr Retrotransposons ◽  
Autoinflammatory Disorders ◽  
Protective Measures ◽  
Active Elements ◽  
Enhanced Expression ◽  
Long Interspersed Element

Although mobile genetic elements, or transposons, have played an important role in genome evolution, excess activity of mobile elements can have detrimental consequences. Already, the enhanced expression of transposons-derived nucleic acids can trigger autoimmune reactions that may result in severe autoinflammatory disorders. Thus, cells contain several layers of protective measures to restrict transposons and to sense the enhanced activity of these “intragenomic pathogens”. This review focuses on our current understanding of immunogenic patterns derived from the most active elements in humans, the retrotransposons long interspersed element (LINE)-1 and Alu. We describe the role of known pattern recognition receptors in nucleic acid sensing of LINE-1 and Alu and the possible consequences for autoimmune diseases.

scholarly journals Cis-active elements controlling lung cell-specific expression of human pulmonary surfactant protein B gene

1993 ◽  
Vol 268 (15) ◽  
pp. 11160-11166
Author(s):  
R.J. Bohinski ◽  
J.A. Huffman ◽  
J.A. Whitsett ◽  
D.L. Lattier
Keyword(s):  
Pulmonary Surfactant ◽  
Surfactant Protein ◽  
Specific Expression ◽  
Active Elements ◽  
Surfactant Protein B ◽  
Pulmonary Surfactant Protein B ◽  
Pulmonary Surfactant Protein ◽  
Protein B

Single-input and three-output current-mode universal filter using a reduced number of active elements

1998 ◽  
Vol 34 (7) ◽  
pp. 605 ◽  
Author(s):  
S. Ozoguz ◽  
C. Acar
Keyword(s):  
Current Mode ◽  
Universal Filter ◽  
Output Current ◽  
Active Elements ◽  
Single Input

Magnetic enzyme membranes as active elements of electrochemical sensors. Specific amino acid enzyme electrodes

FEBS Letters ◽  
1975 ◽  
Vol 59 (2) ◽  
pp. 258-262 ◽  
Author(s):  
Christian Calvot ◽  
Anne-Marie Berjonneau ◽  
Gérard Gellf ◽  
Daniel Thomas
Keyword(s):  
Amino Acid ◽  
Electrochemical Sensors ◽  
Specific Amino Acid ◽  
Enzyme Electrodes ◽  
Active Elements

A High Gain, Monolithic Distributed Amplifier Using Cascode Active Elements

2005 ◽  
Author(s):  
R. LaRue ◽  
S. Bandy ◽  
G. Zdasiuk
Keyword(s):  
High Gain ◽  
Distributed Amplifier ◽  
Active Elements

YAG:Nd laser system with parallel connection of active elements and passive Q-switching

1996 ◽  
Author(s):  
Anatoly N. Kravets ◽  
S. A. Kravets
Keyword(s):  
Laser System ◽  
Parallel Connection ◽  
Active Elements ◽  
Q Switching

Compensation of thermo-optical distortions in the active elements of high-power cw Nd:YAG lasers

1998 ◽  
Author(s):  
S. T. Durmanov ◽  
Vladimir V. Lyubimov ◽  
Yu. P. Rudnitskiy ◽  
Grigoriy Smirnov ◽  
M. A. Kurin ◽  
...  
Keyword(s):  
High Power ◽  
Active Elements ◽  
Nd:Yag Lasers
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