typically, two configurations are used for energy harvesting, with different advantages: piezoelastic and piezomagnetoelastic. best performance of piezoelastic configuration is limited to its narrow bandwidth around the resonance frequency. if the excitation frequency slightly deviates from the resonance frequency, the power-out is severely reduced. to overcome this, the piezomagnetoelastic has...

conclusions the findings of this study indicate that the frequency of disfluencies was increased in difficult syllable structures in comparison to simple syllable structures. according to the results, it seems that certain linguistic features, such as syllable structure can affect speech-motor output in people who stutter through affecting phonological encoding. background stuttering is one of ...

the gutenberg–richter parameters (a and b), fractal dimension (dc), and relationships between these parameters are calculated for different regions of the north of central-east iran blocks (nceib). the whole examined area (between 34°-36° n and 55°-61° e) is divided into 55 equal square grids. both the a and b values for the frequency-magnitude distribution (fmd) and the fractal dimension (dc) ...

introduction: previous studies have been shown that low frequency stimulation (lfs) has an inhibitory effect on kindling acquisition. however, the mechanism of this effect has not been completely determined. in the present study, the effect of lfs of the perforant path on seizures induced by rapid perforant path kindling was investigated. methods: animals were kindled by electrical stimulation ...

the aim of this paper is to minimize output phase noise for the pure signal synthesis in the frequency synthesizers. for this purpose, first, an exact mathematical model of phase locked loop (pll) based frequency synthesizer is described and analyzed. then, an exact closed-form formula in terms of synthesizer bandwidth and total output phase noise is extracted. based on this formula, the phase ...

gastric endoscopy was performed in the 24 persian arab horses from several race training in tehran and tabriz for detection of gastric ulcer. gastric ulcer was evident in 14 persian arab horses (58.3%). ten out of 14 ulcers were in nonglandular region of the stomach. the horses with the history of long term treatment with non-steroidal anti-inflammatory drugs (nsaids) had high prevalence of the...

propose: standard electroporation and electrochemotherapy caused the endothe- lial cell permeability and reduction in tumor blood flow. the effects of low voltage and high frequency electroporation on the endothelial cells permeability and viability were expected. therefore, the propose of present study was to evaluate the effect of electroporation with bleomycin or alone on viability and perme...

patients and methods a total of 553 pregnant females, aged 18 - 40 years, during the third trimester of pregnancy, were included in the study. statistical analysis of pearson correlation coefficient, analysis of covariance for logistic regression and factor analysis were performed using spss software version 23. results in this study, pearson correlation coefficients between test and retest for...

background the importance of sialic acid binding adhesin (saba) as a new outer membrane protein in gastroduodenal diseases has been recognized. the prevalence rate of saba gene varies in different geographic areas. objectives the aim of this study was to determine the frequency of saba gene in helicobacter pylori (h. pylori) strains isolated from different clinical outcomes in tehran, iran. pat...

the present study utilizes an analytical method to formulate the three lowest modal frequencies of axially-loaded notched beam through both crack location and load level in a specific format that can be used in existing frequency-based crack-identification methods. the proposed formula provides a basis to shift into two states, one with axial loading and the other without any loading whatsoever...