Introduction: Migraine is the most common type of chronic headache. Stress can trigger migraine and effect on the duration of migraine attacks. . One of the main reasons of job stress is inappropriate job design. The aim of the current study was to investigate the new cases of migraine regarding models of effort-reward imbalance and demand-control imbalance in job. Methods: Two job designs n...

a novel ultra wideband microstrip bandpass filter using radial stub loaded resonator and interdigital coupled lines is presented in this paper. the radial stub loaded resonator and decagonal patch form a resonator named m to create tuneable multiple notches in the passband for suppression wlan interference. to realize sharp roll-off, two adjustable transmission nulls are located at the lower an...