in this article, the effect of cells' radius on the behavior of wavelength switching optical filter andthe effect of the radius of the optical filters' key characteristics such as wavelength resonance onan optical filter based on photonic crystals, have been investigated. currently, the most commonapplied mechanism for designing optical filter based on photonic crystals is using twome...

Normal human urine cannot be forced through a 0.2 pm filter. To investigate the reason for this phenomenon, uromucoid (Tamm-Horsfall protein) was purified from human urine and its capacity to block a 0.2 pm Millipore filter was measured under different conditions. In the presence of cations (H+, Na+, Ca’“) uromucoid blocked the filter. The blocking varied with cation concentration. Scanning ele...

At 12.8 MHz center frequency, the advanced miniaturized polymer-based planar high quality factor (Q) passive elements embedded bandpass filter works in L-band. Because most of demands operate inside spectrum, wideband or high-speed operation necessary to enhance must be acquired microwave frequency ranges. The channel has a quiet, high-performance microfilter with rejection. Capacitors and indu...

Filters are two-port networks that may pass or attenuate frequencies within defined ranges and can alter the frequency response of any system. In present research study, goals optimization controller embedded with (ADS2019) used to design Butterworth Elliptic bandpass filters (18GHz – 38GHz), a bandwidth (7GHz), stopband attenuation (S21=-60dB), passband (S21=-1dB). Three types each filter (Hp-...

background & aim: the use of herbal extracts as safe and effective factors for eradicating of stores pests has attracted much attention. in this paper, the bio-effects of fumigation and repellent effects of essential oil of eucalyptus globolus were investigated on red flour beetle. experimental: in this study, the toxicity, fumigation and repellency contacts were assayed by topical applicat...

This paper presents an approach for image and video scaling using multirate signal processing. The main objective is to scale images with arbitrary rational scaling ratio without visible aliasing or distortion artifact. The approach can be applied to grey scale images, color images and video signals in both spatial domain and time domain. Cosine modulation is used to minimize the required on-ch...

introduction: to write a computational program to calculate the average glandular dose in mammography with rh-rh target-filter and also use it as an accurate and fast method of dose calculation founder different situations. materials and methods: in this research, the sobol-wu parameters are used to write a fortran code for glandular dose calculation in rh-rh target-filter mammograms. the code ...

An analytical technique based on the method of undetermined coefficients is applied to the problem of computing the theoretical spectral estimate by the maximum entropy method (MEM) when the autocorrelation function of the data is known exactly and corresponds to N sinusoids in additive white noise and to N sinusoids in additive l-pole, low-pass noise. For the white noise case, the L prediction...

In radar, sonar, and ultrasonic detection system, interference due to clutter can severely deteriorate the quality of the received signal to the point of concealing the target. This paper presents theoretical analysis of order statistic processors for improved target detection. The sort function is used to provide in s i i t into the optimal rank for detection of various targets and clutter env...

the cane alcohol vinasse assessment on the removal efficiency of a fixed biomass anaerobic reactor (fbar) was evaluated. crude vinasse was used to feed the reactor. the fbar was operated with organic load rate (olr) of 0.5, 1, 3 and 6 gcod/l/d. removal efficiencies of 85, 82, 75 and 66 per cent were observed respectively. the fba reactor presented an excellent removal of organic matter, however...