Myocardial heating by transcatheter delivery of radiofrequency (RF) energy has been proposed as an effective means of arrhythmia ablation. A thermodynamic model describing the radial temperature gradient at steady state during RF-induced heating is proposed. If one assumes that RF power output is adjusted to maintain a constant electrode-tissue interface temperature at all times, then this ther...

Ultracold atomic gases in periodic potentials are powerful platforms for exploring quantumphysics in regimes dominated bymany-body effects as well as for developing applications that benefit from quantummechanical effects. Further advances face a range of challenges including the realization of potentials with lattice constants smaller than optical wavelengths as well as creating schemes for ef...

radio frequency identification (rfid) is used to identify the characteristics of an object wirelessly using radio waves. the purpose of this technology in this study is mainly focused on healthcare for inventory management and theft control replacing the manual logs. the storage and tracking of high-cost inventory items is developed. automatic reordering and billing interfaces are designed for ...

The Laboratório do Acelerador Linear do Instituto de Física da Universidade de São Paulo (LAL-IFUSP) finished the construction of a β = 1 continuous wave accelerating structure [1] for the IFUSP microtron [2], which presented excellent properties [3]. The structure is a 1.04-m long standing wave, side coupled (SCS) design, with 17 accelerating cavities and 16 coupling cavities. One of the main ...

Apples destined for export to Japan and South Korea are currently disinfested for codling moth, Cydia pomonella L. (Lepidoptera: Tortricidae), using methyl bromide fumigation. Restrictions and limitations imposed on the uses of methyl bromide have increased interest in developing alternative non-chemical quarantine treatments. It is imperative that the treatment is effective against codling mot...

Using specific features of the magnetic equilibrium in the W7-X stellarator, ECRH scenarios with X2 and X3 modes are discussed. The aim is to explore the possibility of selective heating of the different classes of electrons, passing and trapped, by different RF beams with different frequencies, which can be launched from ports located in different crosssections of the device. Perspectives for ...

The funadmental aspects of RF heating theory is reviewed and a summary of recent experimental results are given. All frequency regimes are covered, from very low frequency magnetic pumping to electron cyclotron resonance heating.

Large electron temperature increases (~3000 K) in the ionospheric F-region, produced by powerful HF wave injection, were measured using the EISCAT incoherent scatter radar near Tromsø, Norway, on 7 October 1999. Magnetic fieldaligned measurements showed HF-initiated ion outflows reaching several hundred ms at 580 km. When scanning the radar antenna from field-aligned (77.2o southward) to vertic...

This paper presents neural-based large-signal and isothermal models for the dual gate MESFET as efficient alternatives to existing nonlinear models for such a complex device. The developed neural model is a combination of two sub-models; a static model represented by DC current-voltage characteristics and a dynamic model represented by pulsed current-voltage characteristics. The isothermal mode...

A global simulation code is developed to study the ICRF heating combining two global simulation codes: a full wave field solver, TASK/WM, and a drift kinetic equation solver, GNET. The both codes can treat a 3-D magnetic configuration based on the MHD equilibrium by VMEC code. The developed code is applied to the ICRF minority heating in a simple circular tokamak. The ICRF wave propagation is s...