This paper presents the design of rectangular, fractal Microstrip patch antenna and their backscattering reduction. These antennas have been designed on εr = 4.3, h = 1.53 mm substrate with rectangular patch dimension 36.08 x 29.6 mm and its 2 iterative fractal patch. The experimental resonant frequency of 2 iterative fractal patch is observed 2.11 GHz in comparison to rectangular patch 2.42 GH...

We evaluate occurrence of seizure-like activity in computational network models based on the histology of mammalian cortex. In the simulations, seizure onset activity in a network (active patch) is connected to a larger patch of cells (passive patch). The following scenarios were investigated: (1) the activeand passive patches are contiguous with all connectivity intact; (2) active and passive ...

24 This laboratory study describes the sediment patterns formed in a sand bed 25 around circular patches of rigid vertical cylinders, representing a patch of reedy 26 emergent vegetation. The patch diameter was much smaller than the channel 27 width. Two patch densities (solid volume fraction 3% and 10%) and two patch 28 diameters (22 and 10 cm) were considered. For flows above the threshold of...

Abstract Natural images, textures and photographs are likely to be impaired by stains.  As a result a substantial portion of the image remains blurred. However, a method called region completion is adopted to fill in the tainted part by using the information from the portion left unblemished by stains. A novel method to perform this operation is proposed in this paper. The three significant sta...

Some useful features of microstrip patch antennas are low profile, low weight and easy fabrication. However this type of antenna suffers from having a low gain, caused by propagation surface waves. In this paper, a new near zero refractive index metamaterial (MTM) unit cell is designed and fabricated as a superstrate over a Rectangular Microstrip Patch Antennas (RMPA). In order to obtain a maxi...

BACKGROUND As a modification of patch testing, the strip patch test was established to obtain more sensitive and reliable test results. Comparative data on diagnostic accuracy for both tests are missing. OBJECTIVES To compare the diagnostic accuracy of strip patch tests and patch tests in detecting sensitizations in patients with suspected allergic contact dermatitis by using patient history ...

an active antenna for transmitter application in s frequency band is designed and analyzed using harmonic balance technique which is based on the nonlinear model of active devices. in this active antenna, the amplifier is integrated with the radiator which is a rectangular patch antenna. this patch antenna is analyzed employing full-wave momentum method. by applying nonlinear model of transisto...

background: management of lymphedema is a challenging issue in surgery.  a variety of operations have been used, albeit with little success. objective: to investigate the efficacy of testicular patch as a lymphatic conduit. methods: an incision was made on the inguinal area of 10 dogs and all lymph nodes of inguinal area were excised. the tunica albuginea and parenchyma near the hilum of testes...

Patch management is a crucial component of IT security programs. An important problem within this context is to determine how often to update the systems with necessary patches. Keeping the systems patched with more frequent patch updates increases operational costs while reducing security risks. On the other hand, leaving the systems unpatched with less frequent patch updates decreases operati...