it was thought previously that cardiac muscle gap junctions provide low-resistance connections between cells and permit the local-circuit current to flow. some evidences show that myocardial cells may not require low-resistance connections for successful propagation of the action potential (ap). it seems that some other types of mechanisms must be involved in ap propagation. in this article, we...

background: salt content and ph degree are the quality indicators of bread which their unauthorized levels may have harmful effects on body health. accordingly, this survey was carried out to evaluate ph and salt contents in bread samples produced in mashhad, iran. methods: totally 708 bread samples (340 loaves of lavash, 183 loaves of taftun, 139 loaves of barbari and 46 loaves of sangak bread...

abstractbackground and purpose nowadays, the application of antioxidants and plant growth regulators has discussed for decreasing the negative effect of different stresses. ascorbic acid and sodium nitroprusside have substance caused witch the resistance to biotic and abiotic stresses. to evaluate the effect of ascorbic acid and sodium nitroprusside foliar application on some traits of safflowe...