The permanent magnet brushless direct current motor (BLDC), have been the main component in most of the Ventricular Assist Devices (VAD) development. An implantable centrifugal blood pump is being studied at the Institute Dante Pazzanese of Cardiology (IDPC) as Ventricular Assist Device (VAD) to assist patients with cardiovascular diseases. Its use in patients with heart disease is indicated as...

We present a theoretical study of the positive charge transfer in stilbene-linked DNA hairpins containing only AT base pairs using a tight-binding model that includes a description of structural fluctuations. The parameters are the charge transfer integral between neighboring units and the site energies. Fluctuations in these parameters were studied by a combination of molecular dynamics simula...

Communication between cells is crucial for proper functioning of multicellular organisms. The recently discovered membranous tubes, named tunneling nanotubes, that directly bridge neighboring cells may offer a very specific and effective way of intercellular communication. Our experiments on RT4 and T24 urothelial cell lines show that nanotubes that bridge neighboring cells can be divided into ...

Performance of structures during recent earthquakes shows that the effect of vertical component of earthquake (VCE) could be considered as one of the main causes of bridges collapse. In most of bridge design codes, for seismic analysis of bridges, VCE is not taken into account or a distinguished method isn’t presented for assessment of VCE. In the present work, the effect of VCE on two existing...

The paper presents a single phase transformer based inverter for nonlinear load application using PID controller. A capacitive full bridge circuit is used to provide instant current under nonlinear load conditions and thereby reducing the harmonics. A new proportional plus integral controller for inverter control is proposed to eliminate the dc current component, and steady state error under he...

We investigate topology change in 3D. Using Morse theory and handle decomposition we find the set of elementary cobordisms for 3-manifolds. These are: (i) Ø ↔ S 2 ; (ii) Σ g ↔ Σ g+1 ; (iii) Σ g 1 ⊔ Σ g 2 ↔ Σ g 1 +g 2 , and they have appealing physical interpretations, e.g. Big Bang/Big Crunch, wormhole creation/annihilation and Einstein-Rosen bridge cre-ation/annihilation, respectively. This de...

Let v be a bounded function with bounded support in Rd, d ≥ 3. Let x, y ∈ Rd. Let Z(t) denote the path integral of v along the path of a Brownian bridge in Rd which runs for time t, starting at x and ending at y. As t → ∞, it is perhaps evident that the distribution of Z(t) converges weakly to that of the sum of the integrals of v along the paths of two independent Brownian motions, starting at...

As an introduction we present a new, elementary and constructive proof of the multisummability properties of formal solutions of linear ODE’s at irregular singular points. This serves to illustrate the geometric approach to multisummation. Basic properties of multisums and the associated sheaves are derived. Next, we study Cauchy-Heine transforms in relation to multisummation and the Stokes phe...

The hybrid modular multilevel converter (MMC) consisting of half-bridge submodules (HBSMs) and full-bridge (FBSMs) is a promising solution for overhead lines high-voltage direct current systems (HVDC) due to the advantages short circuit fault ride-through (DC-FRT) capability. This paper proposes an improved phase-disposition pulse width modulation (PDPWM) method converter. number carriers can b...

The comparision of bridgeless isolated cuk converter using proportional integral derivative (PID) and neural controller (NC) is presented in this paper. Due to diode bridge rectifier (DBR) conventional converters suffer from high conduction loss. Bridgeless Cuk converter is used to eliminate the issues. bridgeless isolated (BLI) cuk converter is used to withstand high voltage. Compare to Contin...