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...

in this century due to population growth, the use of river water has become more complicated. since most rivers pass across loose and erodible areas, they always act as the most important factor of transferring eroded materials from the solid crust of the earth.  vortex basins are among the solutions known for the high-speed separation of solids from liquids (filtration). one of the problems of...