Using the patch-clamp whole-cell recording technique, we investigated the influence of external Ca2+, Ba2+, K+, Rb+, and internal Ca2+ on the rate of K+ channel inactivation in the human T lymphocyte-derived cell line, Jurkat E6-1. Raising external Ca2+ or Ba2+, or reducing external K+, accelerated the rate of the K+ current decay during a depolarizing voltage pulse. External Ba2+ also produced...

Methods Isolated and cleaned squid giant axons were internally perfused by a modification of the method of Adelman and Gilbert (1964) and Adelman and Fok (1964). A chemically driven syringe (Sage Instruments) was directly connected to the axon interior through a small cut in one end by means of a 200,/ diameter glass cannula. The internal axoplasm was eroded away upon continuous internal fluid ...

The membrane current vs. voltage dependence was measured in Limulus ventral nerve photo­ receptors at various external Ca2+ and N a+ concentrations, using the voltage clamp technique. Lowering the external concentration of the divalent cations Ca~+ and Mg+ to < 1 |im ol/l by adding EDTA causes 1) the light-induced transient conductance increase to disappear and 2) Irev J d ! the reversal potent...

Abstract: The current research is aimed to investigate the alterations of its opticalfeatures of novel adjustable three color narrowband optical filters, which comprise ofblue, green and red light. A narrowband adjustable transmission optical filters accordingto dielectric- ferroelectric heterostructures photonic structures are designed using thetransfer-matrix method (T...

When attached to specific sites near the S4 segment of the nonconducting (W434F) Shaker potassium channel, the fluorescent probe tetramethylrhodamine maleimide undergoes voltage-dependent changes in intensity that correlate with the movement of the voltage sensor (Mannuzzu, L.M., M.M. Moronne, and E.Y. Isacoff. 1996. Science. 271:213-216; Cha, A., and F. Bezanilla. 1997. Neuron. 19:1127-1140). ...

Received Feb 14, 2017 Revised Apr 14, 2017 Accepted Apr 28, 2017 This paper proposes maximum boost control for 7-level z-source cascaded h-bridge inverter and their affiliation between voltage boost gain and modulation index. Z-source network avoids the usage of external dc-dc boost converter and improves output voltage with minimised harmonic content. Z-source network utilises distinctive LC i...

The positively charged S4 transmembrane segment of voltage-gated channels is thought to function as the voltage sensor by moving charge through the membrane electric field in response to depolarization. Here we studied S4 movements in the mammalian HCN pacemaker channels. Unlike most voltage-gated channel family members that are activated by depolarization, HCN channels are activated by hyperpo...

In this study a new built-in ultrahigh frequency (UHF) antenna sensor was designed and applied in a high-voltage switchgear for partial discharge (PD) detection. The casing of the switchgear was initially used as the ground plane of the antenna sensor, which integrated the sensor into the high-voltage switchgear. The Koch snowflake patch was adopted as the radiation patch of the antenna to over...

The Multi-voltage technique is an effective way to reduce power consumption. In the proposed cell-based voltage domain programmable (VDP) technique, the high and low voltages applied to logic gates are programmable. The flexible voltage domain reassignment allows the chip performance and power consumption to be dynamically adjusted. In the proposed technique, the power switches possess the feat...

Fluctuation analysis is a method that allows measurement of the single-channel current of ion channels even when it is too small to be resolved directly with the patch-clamp technique. This is the case for voltage-gated calcium channels. They are present in all mammalian central neurons, controlling presynaptic release of transmitter, postsynaptic signaling, and synaptic integration. The amplit...