In this paper, we present a novel approach for improving the bandwidth of a microstrip patch antenna using Jerusalem crossshaped frequency selective surfaces (JC-FSSs) as an artificial magnetic ground plane. The invasive weed optimization (IWO) algorithm is employed to derive optimal dimensions of the patch antenna and JC-FSS element in order for the whole structure to work at 5.8GHz with consi...

This paper presents modeling of the complex permeability spectra, fabrication and a wide frequency range characterization of a toroidal LTCC ferrite sample. A commercial ferrite tape ESL 40012 is used, and standard LTCC (Low Temperature Co-fired Ceramic) processing has been applied to the sample fabrication. The characterization was performed using a short coaxial sample holder and a vector net...

We simulated multistate capture histories (CHs) by varying state survival (ϕ), detection (p) and transition (ψ), number of total capture occasions and releases per capture occasion and then modified these scenarios to mimic false rejection error (FRE), a common misidentification error, resulting from the failure to match samples of the same individual. We then fit a multistate model and estimat...

BALB/c mice were treated with different combinations of hormones (estrogens, progesterone, and Enovid) and herpesvirus type 2 (HSV-2). Characteristic cytological changes of herpesvirus infection were observed in 40% of 140 mice treated with the virus; these mice had previously been immunized with HSV-2 inactivated with ultraviolet light. No significant differences were observed in the fre quenc...

In line with the continually advancing ma turity of the electronics field as a whole, the portion of the field concerned with frequency control has made significant forward strides in recent years. As a result, high-precision fre quency standards employing quartz resonators presently achieve stabilities of a part in 109 per day or better, while atomic standards ex hibit accuracies of one or two...

We have developed a qualitative and quantitative assay system for detecting cells lacking postconfluence inhibition of cell division (contact insensitivity, CS~) in golden Syrian ham ster embryo cells in culture by measuring the number of cells able to form colonies on a lethally irradiated, confluent monolayer of a contact-sensitive established cell line. A subpopulation in normal low-passage ...

This paper addresses the distributed optimal fre-quency control of power systems considering a network-preserving model with nonlinear power flows and excitationvoltage dynamics. Salient features of the proposed distributedcontrol strategy are fourfold: i) nonlinearity is considered tocope with large disturbances; ii) only a part of generatorsare controllable; iii) no lo...

Nitrate balance and N-nitrosodimethylamine (NDMA) excretion were studied in woodchucks chronically infected with woodchuck hepatitis virus (WHY). Twenty-four-h urinary recovery of a bolus dose of |l5N]nitrate was 54 ±12% in woodchucks. VVHV-infectedanimals formed 3-fold more nitrate endogenously than did control animals (/' < 0.01). Treatment of WHV-infected animals with Escherìchiacoli lipop...

R ecently malf unctions of teleco mmunication installations caused by switching noises of el ectric equipment or devices have been increasing. T he switching noises usually have low frequency components less than 50Hz and also more than 9kHz or 150 kHz. It is useful to detect power spectrum of noises in order to solve EMC proble ms. The LPC (Linear Prediction Cod e) me thod is kn own as a power...