We consider electrical circuits containing linear resistances, capacitances, inductances. The circuits can be described by differential-algebraic input-output systems, where the input consists of voltages of voltage sources and currents of current sources and the output consists of currents of voltage sources and voltages of current sources. We generalize a characterization of asymptotic stabil...

In this paper two dimensional wave propagation is used for power combining in drain nodes of a distributed amplifier (DA). The proposed two dimensional DA uses an electrical funnel to add the currents of drain nodes. The proposed structure is modified due to gate lines considerations. Total gain improvement is achieved by engineering the characteristic impedance of gate lines and also make appr...

We report here new electrical laws, derived from nonlinear electro-diffusion theory, about the effect of the local geometrical structure, such as curvature, on the electrical properties of a cell. We adopt the Poisson-Nernst-Planck (PNP) equations for charge concentration and electric potential as a model of electro-diffusion. In the case at hand, the entire boundary is impermeable to ions and ...

The article analyzes the damage to cable line 35 kV in regions of Tashkent. According analysis results, electrical damages districts Tashkent city were detected more often Shaikhantakhur, Yunsabad, Yashnabad and Almazar than other districts. Electrical was mainly sleeve -51%, – 43% funnel 6%. Moisture, corrosion, mechanical wear, manufacturing defects factors are main causes this damage.

We study linear differential-algebraic multi-input multi-output systems which are not necessarily regular and investigate the zero dynamics and tracking control. We use the concepts of autonomous zero dynamics and (E,A,B)-invariant subspaces to derive the so called zero dynamics form which decouples the zero dynamics of the system and exploit it for the characterization of system invertibility....

Atmospheric Pressure Ion (API) sources, inductively coupled plasma, corona discharges, lasers, electrospray and ion spray sources, are widely used in mass spectrometry. These sources create ions at atmospheric pressure. To analyze the masses of ions, they are introduced into a mass analyzer that is generally maintained at high vacuum. A differential pumping system involving several stages is co...

Innexins, a large protein family comprising invertebrate gap junction channels, play an essential role in nervous system development and electrical synapse formation. Here we report the cryo-electron microscopy structures of Caenorhabditis elegans innexin-6 (INX-6) gap junction channels at atomic resolution. We find that the arrangements of the transmembrane helices and extracellular loops of t...