In this work a method of broad band dielectric spectroscopy using an open-ended line is proposed. The mathematical development of this method leads to a transcendental equation on the complex plane that possesses infinite solutions. A numerical procedure is described which is capable of obtaining the solution required avoiding the problem of infinite solutions. The study of this equation sugges...

We describe a technique that permits broad-band, field-dependent ferromagnetic and electron paramagnetic resonance absorption measurements that is applicable to thin films and patterned micro-/nanostructured arrays and is based on a wire-wound meanderline approach. Techniques to prepare meanderlines and perform microwave measurements are described along with some demonstrations involving an ele...

In order to better understand the budget of carbon dioxide in the Earth's atmosphere it is necessary to develop a global high precision understanding of the carbon dioxide column. To uncover the `missing sink" that is responsible for the large discrepancies in the budget as we presently understand it, calculation has indicated that measurement accuracy of 1 ppm is necessary. Because typical col...

Abstract: Microstrip antenna is low coast, light weight, and easy to connect with the electric circuit, but it have some drawbacks such as low bandwidth and low gain. In this paper planar microstrip antenna is proposed to enhanced gain and bandwidth. The new design is have modified ground plane and periodic patch. The bandwidth and gain are enhanced, when compared with the traditional rectangul...

We have used non-simultaneous Ginga, ASCA and ROSAT observations to investigate the complex X-ray spectrum of the Seyfert 2 galaxy Mrk 3. We find that the composite spectrum can be well described in terms of a heavily cut-off hard X-ray continuum, iron Kα emission and a soft X-ray excess, with spectral variability confined to changes in the continuum normalisation and the flux in the iron line....

We study the correlations of the flux of the broad-line emission (FBLR) with the X-ray emission flux, optical emission flux at 5500 Å and radio emission flux at 5 GHz, respectively, for a large sample of 50 Blazars (39 flat-spectrum radio quasars (FSRQs) and 11 BL Lac objects). Our main results are as follows. There are very strong correlations between FBLR and FX and between LBLR and LX in bot...

Conclusion For a network to eeciently support traac with multiple QOS deenitions, including hard bounds on delay, there must be hardware support for scheduling algorithms that can help real-time cells meet their deadlines. This is the fundamental message of Asynchronous Time Sharing, and the springboard which gave ight to the ideas developed in this dissertation. For once one assumes the existe...

We present near-IR photometry of a selected sample of southern hemisphere E+A galaxies. The sample includes 50 galaxies from nearby (z ∼ 0.05) and distant (z ∼ 0.3) clusters as well as E+A galaxies from the field (z ∼ 0.1). We also observed 13 normal early-type galaxies from the field and from clusters to be compared with the E+A sample. The photometry includes J , H and Ks apparent magnitudes ...

The problem of non-invasive spatial localization in NMR is approached by constructing a spatially selective composite pulse sequence and incorporating it into a recently developed difference scheme. The composite sequence described, which requires nine phase-shifted n pulses, functions only over a narrow range of radio-frequency (rf) field strengths while remaining effective over a broad range ...

We analyzed the rapid aperiodic X-ray variability of different types of X-ray binaries (black hole candidates, atoll sources, the recently discovered millisecond X-ray pulsar, and Z sources) at their lowest inferred mass accretion rates. At these accretion rates, the power spectra of all sources are dominated by a strong band-limited noise component, which follows a power law with an index roug...