The U-slot micro-strip patch antennas were originally developed for bandwidth broadening applications. This study presents a transmission line feed to modify the U-slot stacked rectangular micro-strip patch antenna for Ultra-Wide Band (UWB) communications. The modified antenna has a U-cut loaded with parallel slits and corner slots and is printed on a dielectric substrate of FR4 with relative p...

In this letter, we present a systematic approach to design compact dual-mode monopole-like patch antenna using characteristic mode analysis (CMA). The modal of slotted circular structure incorporating new shorting pin loading technique is presented. To achieve with the wideband operation, it demonstrated that first two significant modes patterns are most suitable ones for excitation. Based on c...

rangeland ecosystem contains various patches with different functions. structural and functional characteristics of rangeland patches are changed by management practices and can be used to interpret management effects. the structural and functional characteristics of fertilized patches in two rangeland ecosystems of ghareh ghir and maraveh tapeh were measured and analyzed in this study. a group...

In this paper, a filtering antenna based on metasurface is designed using slot-coupled feeding, and the unit fractal pattern. Replacing rectangular patch with can introduce radiation zero point upper sideband of antenna, thereby enhancing selectivity. addition, current reversed by loading shorting pin, also introduced in lower sideband. After measurement, -10 dB impedance bandwidth 23.6% (3.22-...

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...

abstract parasitic insects face many decisions when foraging for host, some for example frequently have to make decisions with regard to staying in or leaving their current patch. in this study, we investigated how the foraging and oviposition behavior of lysiphlebus fabarum is influenced by (1) a female’s previous experience of encountering aphids host and (2) age of female parasitoids. to tes...

We studied the CO2/H-chemosensitive responses of individual solitary complex (SC) neurons from adult rats, by simultaneously measuring the intracellular pH (pHi) and electrical responses to hypercapnic acidosis (HA). SC neurons were recorded using the blind whole cell patch clamp technique and loading the soma with the pH-sensitive dye pyranine through the patch pipette. We found that SC neuron...

Faithful repair of DNA double-strand breaks by homologous recombination is crucial to maintain functional genomes. The major Escherichia coli pathway of DNA break repair requires RecBCD enzyme, a complex protein machine with multiple activities. Upon encountering a Chi recombination hotspot (5' GCTGGTGG 3') during DNA unwinding, RecBCD's unwinding, nuclease, and RecA-loading activities change d...