background helicobacter pylori (h. pylori) is one of the most common bacterial infections worldwide. we designed a study to compare the efficacy of 14-day hybrid regimen with 10-day concomitant therapy for h. pylori eradication in iran. methods 252 patients with naïve h. pylori infection were randomly divided to receive either hybrid regimen (pantoprazole 40 mg, and amoxicillin 1 gr twice daily...

background and aim: in vitro studies have revealed a direct association between resin content and cytotoxicity of resin composites; but implantation studies in this regard are sparse. this study investigates the relationship between filler content of composite resins and biocompatibility. materials and methods: this study was conducted using 18 male wistar rats (180-200g), 1 nano-hybrid (prime-...

Received: December 28, 2017 Revised: February 23, 2018 Accepted: February 26, 2018 Abstract: Background: For centuries, steel rebar has been the primary reinforcement in concrete despite its major drawbacks, such as its heavy weight, high electrical conductivity, and corrosiveness. Thus, in response to the need for better alternatives, innovative Hybrid Composite (HC) reinforcements have been d...

abstract background and aim: one of the major problems with resin composite restorations is the weakness of bonding between the new and aged composites. since appropriate micromechanical retention is necessary for the repair of aged resin composite restorations, the level of surface roughness after sandblasting can be influential in this regard. considering the diverse composition of available ...

in this paper, a hybrid solid oxide fuel cell (sofc) and micro gas turbine (mgt) power system is parametrically studied to evaluate the effect of different operating conditions. the sofc/mgt power system includes sofc reactor, combustion chamber, compressor and turbine units, and two heat exchangers. the effects of fuel utilization, temperature, and pressure are assessed on performance of the h...

This research set out to evaluate the effect of combined biological and chemical nitrogen fertilizers on some corn hybrids. To this end an experiment was conducted as split plot on the basis of randomized complete block design with four replications. Main plots were included: use of chemical and biological fertilizers in four levels: 100% chemical fertilizer, 75% chemical fertilizer + 100% bio-...

in order to evaluate the effect of different planting patterns and different varieties of corn on quantity management in 2015 as a split-plot in a randomized complete block with 3 replications. the test pattern as the main factor in two levels in the atmosphere and the stack corn hybrids in four sub-levels maxima, asv3, magi 704 and 400 were hybrids. the effect of planting pattern, the maximum ...