Abstract Background Approximately 69% of population in Tanzania lacks better sanitation, while 45.6% access to clean and safe water. To leverage this shortage, several technologies have been used for purifying water from various sources; however, there is still persistence waterborne diseases. Main body This article reviewed the efficiency common filters removing contaminants such as Escherichi...

in order to comparison of weeds mechanical control for sugar beet, a rotary cultivator was designed and constructed in first year, and compared with other mechanical control in second year. five treatments, included: rotary hoe cultivator, furrower cultivator, rotary cultivator, no weeding and manual weeding were compared. experiment design was random complete blocks design (rcbd) with three re...