Ricerc@Sapienza

The effects of the patented treated-yeast, Saccharomyces cerevisiae, a
probiotic suspension which was shown earlier to present
neuroprotective and neurorestorative properties, upon allergies
presented by a group (n=8) of patients, that were compared with a
matched group of patients administered untreated yeast cells (n=8).
Treated yeast cells were subjected to millimeter-wave exposure as
outlined in patented documents. The patients who administered

In this work, we propose an azimuthally-invariant periodic leaky-wave radiator for the generation of Bessel beams and X-waves by means of backward cylindrical leaky waves at millimeter wavelengths. A rigorous framework is first outlined to understand the theoretical constraints of such novel design. A specific attention is devoted to the impact of the attenuation constant on the focusing properties of the device. On this basis, a practical design is then proposed to meet the previous requirements.

Bessel-beam launchers are promising and established technologies for focusing applications at microwaves. Their use in time-domain leads to the definition of a new class of devices, viz., the X-wave launchers, that are currently under theoretical investigation. In this work, we discuss the focusing features of such devices with a specific interest at millimeter waves. By reviewing the mathematical expressions that describe the spatial resolutions of these systems, we establish here novel operating conditions which might be particularly appealing for specific millimeter-wave applications.

In this work, we propose an azimuthally-invariant periodic leaky-wave (LW) radiator for the generation of Bessel beams and X-waves by means of backward cylindrical LWs at millimeter wavelengths. A rigorous framework is first outlined to understand the theoretical constraints of such a novel design. A specific attention is devoted to the impact of the attenuation constant on the focusing properties of the generated Bessel beams. On this basis, a practical design is then proposed to meet the previous requirements.

Bessel-beam launchers are promising and established technologies for focusing applications at microwaves. Their use in time-domain leads to the definition of a new class of devices, namely, the X-wave launchers. In this work, we discuss the focusing features of such devices with a specific interest at millimeter waves. The spatial resolutions of such systems are described under a rigorous mathematical framework to derive novel operating conditions for designing X-wave launchers. These criteria might be particularly appealing for specific millimeter-wave applications.

The objective of this paper is to characterize the atmospheric radiometeorological parameters (optical thickness and brightness temperature) at centimeter and millimeter waves. To this aim, we have exploited two radiative transfer models (RTMs): A three-dimensional model (3D-RTM), driven by numerical weather forecasts, and a stochastic one-dimensional (1-D) model (1D-RTM), fed by a synthetic clouds dataset. We have compared the radiative transfer simulations with measurements from two ground-based microwave radiometers: A profiler and a Sun-Tracking radiometer.