Skin receptors and intradermal nerves do not generate the sensory double peak

1. The propagated massed potentials which follow stimulation of the radial nerve in Arbacia, Diadema, Echinus and Paracentrotus are described. 2. Approximate values for the averaged absolute and relative refractory periods and the conduction velocity were obtained. 3. The response of Diadema has a double peak which is shown to represent responses of nerves differing in excitability and conduction velocity. The fast potential is concerned with spine movement. The slow potential is related to inhibition of spine movements excited photically.

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Study on Possible Double Peaks in Cutoff Frequency Characteristics of AlGaAs/GaAs HBTs by Energy Transport Simulation

VLSI Design ◽

10.1155/1998/23740 ◽

1998 ◽

Vol 8 (1-4) ◽

pp. 437-442

Author(s):

T. Okada ◽

K. Horio

Keyword(s):

Heterojunction Bipolar Transistors ◽

Energy Transport ◽

Transport Model ◽

Cutoff Frequency ◽

Bipolar Transistors ◽

Electron Velocity ◽

Collector Current ◽

Double Peak ◽

Double Peaks ◽

Energy Profiles

By using an energy transport model, we simulate cutoff frequency fT versus collector current density IC characteristics of npn−n AlGaAs/GaAs heterojunction bipolar transistors (HBTs) with various n−-collector thickness and n−-doping densities. It is found that the calculated fT characteristics show double peak behavior when the n−- layer is thick enough and the n−-doping is high enough to allow existence of neutral n−- region. The mechanism of the double peak behavior is discussed by studying energy band diagrams, electron-energy profiles and electron-velocity profiles. Particularly, we discuss the origin of the second peak (at higher IC) which is not usually reported experimentally.

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The tensile behaviour of biaxial and triaxial braided fabrics

Journal of Industrial Textiles ◽

10.1177/1528083716654469 ◽

2016 ◽

Vol 47 (8) ◽

pp. 2184-2204 ◽

Cited By ~ 9

Author(s):

Duchamp Boris ◽

Legrand Xavier ◽

Soulat Damien

Keyword(s):

Mechanical Properties ◽

Experimental Study ◽

Mechanical Behaviour ◽

Tensile Tests ◽

Uniaxial Tensile ◽

Tensile Behaviour ◽

Linear Mass ◽

Double Peak ◽

Specific Behaviour ◽

Braiding Angle

The tensile behaviour of braid reinforcement is classically described by the behaviour of composite elaborated from these reinforcements. Few studies concern the tensile behaviour of braided fabrics. In this paper biaxial and triaxial braids are manufactured on a braiding loom. The evolution of key parameters as linear mass and braiding angle in function of process parameters is presented. Braid reinforcements are characterized in uniaxial tensile. The mechanical behaviour is analysed and compared in function of the braiding angle, but also different kinds of braid are considered. A specific behaviour called “double-peak” is identified for triaxial braids which have a higher braiding angle. The evolution of the braiding angle measured during tensile tests gives a comprehension on the mechanical behaviour of dry braids. Associated with this experimental study, an analytical model is also proposed, to predict mechanical properties of braid reinforcements.

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