these days, most of the marine structures which are constructed and used in persian gulf, are made of st37 steel. due to oil and gas sources excavated, the number of these structures is constantly increasing. on the other hand, these types of structures are exposed to corrosive environments and it is seriously critical for these structures to be used for many years. coal tar epoxy (trade name),...

purpose: this investigation was undertaken to evaluate the potency of metarhizium anisoplea as a biological alternative to the biological control of german cockroaches. materials & methods: the fungal spores were applied against the male and female german cockroach, using two bioassay methods, viz the submerge application and the injection. the data was analysed and the mean mortality was ...

background: amoxicillin is widely used as an antibiotic in the modern medicine. due to its chemical structure, polarity, activity level, antibiotic specifications, and environmental sustainability, amoxicillin leaks into the groundwater, surface waters, and drinking water wells. many physical and chemical methods have been suggested for removing amoxicillin from aquatic environments. however, t...

In growing certain woody plants in continuously flowing culture solutions it has been found essential to submerge only a portion of the established root system while still maintaining a relatively high humidity around the unsubmerged roots. The following apparatus has been found especially satisfactory for this purpose, allowing the use of ordinary jars of glass or other material as culture ves...

microrobot with a gas combustion mechanism and buoyant outriggers. These design components stabilized the microrobot, overcoming the water’s surface tension to allow take-off. A surfactant coating enabled diving, and a flapping-wing configuration provided functional propulsion for both air and water environments. The microrobot could land on an elastic surface, hover in air, submerge into water...

Partially constructed Makhul dam may collapse after the operation due to geological and geotechnical background of foundations zone, presence gypsum layers in this Then construction Al-Fat'ha protection is one proposed solutions. The present study used geometric analysis method investigate ability planned protecting reduce disasters break. new methodology derive elements two dams, analyze relat...