We have developed a new method of crosstalk correction in simultaneous dual-isotope imaging with Tl-201 and I-123 by using crosstalk ratios and a blurring filter. Single isotope myocardial studies (10 for Tl-201 and 7 for I-123) were performed with a dual energy window acquisition mode and two low energy general-purpose collimators. Then two planar images acquired with dual energy windows for a...

A compact circularly polarized (CP) patch antenna using a composite right/left-handed (CRLH) transmission line (TL) unit-cell is proposed. The CRLH TL unitcell includes a complementary split ring resonator (CSRR) for shunt inductance and a gap loaded with a circularshaped slot for series capacitance. The CSRR can decrease the TM10 mode resonance frequency, thus reducing the electrical size of t...

In this paper, we compare five engineering return stroke models, extended to include the presence of an elevated strike object, namely the Bruce–Golde (BG) model, the transmission line (TL) model, the traveling current source (TCS) model, and the two modified TL models (MTLL and MTLE). The model-predicted current profile along the channel and along the strike object, as well as radiated electri...

One of most important elements of Electric Power Systems (EPS) is the transmission line (TL), which is permanently under adverse conditions especially lightning strokes. At the moment, those phenomena have been the root cause of short circuits and the most important cause of mal-operation of transmission line protection relays. Thus, this paper develops the classification of lightning transient...

The dielectric properties of bones are found to be influenced by the demineralisation bones. Therefore, microwave imaging (MWI) can used monitor in vivo human and hence aid monitoring osteoporosis. This paper presents feasibility analysis MWI device for Firstly, tissues present heel analysed. Secondly, a transmission line (TL) formalism approach is adopted examine feasible frequency band matchi...

A novel 2-D composite right/left-handed transmission line (CRLH-TL) metamaterial in polar coordinates is proposed for the first time, and applied to a multistandard antenna. The prototype antenna with triband operation colocated pattern polarization diversity specifically designed eliminate need multiple antennas processing center side significantly reduce area cost. Radial CRLH-TL waves of mod...

A metamaterial based electronically controlled microstrip structure, performing as leaky wave (LW) antenna with beam steering capability was synthesized. The structure has the configuration of metamaterial transmission line (TL) composed of cascade composite right-/left-handed (CRLH) unit cells. The direction of maximum radiation is tuned via the variation of varactros’ capacities incorporated ...

Conventional techniques to extract channel mobility, , and sheet carrier concentration, nS , in heterostructure fieldeffect transistors (HFET’s) do not account for the distributed nature of the device. This can result in substantial errors. To address this, we have developed a new technique that consists of measuring the gate-to-source impedance with the drain floating (Z11) over a broad freque...

Male mice which are heterozygous for a recessive lethal mutation (+/tL) transmit the tL mutation in non-Mendelian ratios. In the present studies, spermatozoa obtained from +/t12 males were used to fertilize ova from +/t12 females in vitro. The frequency of transmission of the t12 mutation determined from these in vitro studies was compared with the frequency of transmission of this mutation in ...

An analytical model based on modal series expansion method for calculating transmission loss (TL) of compressor’s mufflers has been present in this paper. The approximately averaged pressure response value, obtained by calculating the weighted average pressure response value in the vicinity of the point source, is applied to derive the pressure response functions and four-pole parameters. There...