Suspended sediments in oceans, seas, and estuaries shape coastal geography, provide important nutrients to ecosystems, and transport and bury harmful contaminants. Although the problem has significant interest in the scientific and environmental engineering communities, many of the the mechanisms involved are poorly understood because of the difficulty and expense of measuring what turns out to...

The cetylpyridinium chloride turbidity screening test for glycosaminoglycan excretion discussed by Manley, Severn, and Hawksworth (1968) has been used in this laboratory. In this method (cetylpyridinium chloride turbidity) the precipitation time of four minutes is critical since, after this time interval, turbidity may continue to rise or may fall due to aggregation of particles. As a result of...

Automated data collection is essential to effectively measure suspended sediment loads in storm events, particularly in small basins. Continuous turbidity measurements can be used, along with discharge, in an automated system that makes real-time sampling decisions to facilitate sediment load estimation. The Turbidity Threshold Sampling method distributes sample collection over the range of ris...

Many substances of plant origin are extracted for use in the primary treatment domestic wastewater. In most cases, they used as coagulating and flocculating agents derived from seeds, leaves, bark or sap, roots, fruits trees plants. this research, Cassia fistula seed was evaluated removal turbidity color wastewater a pumping station city Cartagena (Colombia). The optimal dose C. powder determin...

Measurements of fibrinogen concentration by use of two rapid methods (clot.weight method and th rombin-turbidity method) were compared with the reference thrombin.coagulation method of Ratnoff and Menzie [J. Lab. Clin. Med. 37, 316 (1951)]. Both rapid methods gave results (in the high, middle, and low ranges) that correlated well with those of the thrombin-coagulation method. However, the throm...

Turbidity is an important index to evaluate the water quality. Turbidity can reflect the effects of insoluble substances that contain bait and seston on water. Traditional methods of turbidity detection are complicated, they have low efficiency and poor reliability. To solve the turbidity detection problem in aquaculture, an intelligent optical turbidity sensor which is based on scattering theo...