Direction-of-arrival (DOA) estimation based on the array of three-component electromagnetic vector-sensors is considered within a biquaternion framework. A relationship is established between the biquaternion covariance and the combination of both complex covariance and cross-product. By exploiting this relationship, the DOA estimates can finally be obtained by diagonalizing the biquaternion co...

conclusions this study indicates that satureja khuzestaniea essence has inhibitory effects on the gene expression of antibiotic resistance in bla-oxa-23 that has a high mic. given that this essence has a good inhibitory effect on gene expression in mdr acinetobacter baumannii and bla-oxa-23, the results indicate that it could be used as a natural way to prevent the growth of acinetobacter bauma...

purpose : to determine the distribution of iris colors in the population of tehran and to assess possible associations between iris color and ocular disorder methods : through a stratified random cluster sampling approach, 160 clusters were selected in different municipality districts of tehran, and the approached households were invited to a clinic. after the initial interview, all participant...

In antenna array applications, the propagation environment is often more complicated than the ordinary assumption of plain wavefronts. Here, a low complexity algorithm is suggested for estimating both the DOA and the spread angle of a mobile source subject to local scattering, using a uniform linear array. The parameters are calculated from the estimates obtained using a standard algorithm such...

  Background & Aims of the Study: Heavy metals, such as cadmium, lead, and chromium, are common environmental pollutants; however, they are used in various cosmetics. Regarding this, the aim of the present study was to measure the concentrations of lead, cadmium, and chromium in the hair colors available in the markets of Qom, Iran. Materials and Methods: This cross-sectional...

problem of evil is something which is considered against existence of god or his attributes like being omnipotent and absolutely good. philosophers and theologians have tried to solve this problem by different ways. the solution which is accepted by muslim philosophers is the nothingness of evils. according to this opinion evils are not except nothing of essence or perfections of essence. in th...