نتایج جستجو برای: turbidity currents

تعداد نتایج: 56350  

2006
Hui-Peng Lin Guy Charmantier Pierre Thuet Jean-Paul Trilles

Penaeus japonicus juveniles were exposed for 3 wk to different turbidities of suspended sediments: control [2 + 2 nephelometric turbidity units (NTU)], medium turbidity (35 f 15 NTU) and high turbidity (65 f 15 NTU). The mortality rate increased after exposure to high turbidity Exposed late luveniles became less tolerant to changes in ambient salinity and showed hlgher mortalities at low salini...

2013
G. Muthuraman S. Sasikala N. Prakash

Coagulation-flocculation followed by sedimentation and filtration is the most commonly used water treatment process , in which turbidity or particles removal is strongly dependent on proper coagulant dosage, effect of pH ,effect of time, jar test and settling column tests were perform. In the method the seeds were treated with different solvents of NaCl and NaOH to extract the active coagulant ...

2009
DANIEL E. SHOUP DAVID H. WAHL

—Turbidity in aquatic systems can change rapidly, affecting the visual ability of predators. Increased turbidity is known to reduce the reactive distance and foraging success of some planktivores and insectivores, leading to decreased growth rates. However, little is known about the effects of turbidity on prey selection by piscivores. We examined the interactions between largemouth bass Microp...

Journal: :Water science and technology : a journal of the International Association on Water Pollution Research 2009
C Lacour C Joannis M-C Gromaire G Chebbo

Turbidity sensors can be used to continuously monitor the evolution of pollutant mass discharge. For two sites within the Paris combined sewer system, continuous turbidity, conductivity and flow data were recorded at one-minute time intervals over a one-year period. This paper is intended to highlight the variability in turbidity dynamics during wet weather. For each storm event, turbidity resp...

2014
Sarah E. Martin Martha H. Conklin Roger C. Bales

Seasonal turbidity patterns and event-level hysteresis analysis of turbidity verses discharge in four 1 km headwater catchments in California’s Sierra Nevada indicate localized in-channel sediment sources and seasonal accumulation-depletion patterns of stream sediments. Turbidity signals were analyzed for three years in order to look at the relationships between seasonal turbidity trends, event...

Journal: :Marine Geology 2021

The Gollum Channel System (GCS) and Kings (KCS) are situated at a key location on the eastern side of Porcupine Seabight to provide valuable insight into British-Irish Ice Sheet dynamics sediment supply Belgica cold-water coral mound province. These channel systems most efficient pathways for particles from Irish Shelf edge basin. spatial temporal variability their activity are, therefore, like...

Journal: :Remote Sensing 2018
Matthew J. McCarthy Daniel B. Otis Pablo Méndez-Lázaro Frank E. Müller-Karger

Coastal water-quality is both a primary driver and also a consequence of coastal ecosystem health. Turbidity, a measure of dissolved and particulate water-quality matter, is a proxy for water quality, and varies on daily to interannual periods. Turbidity is influenced by a variety of factors, including algal particles, colored dissolved organic matter, and suspended sediments. Identifying which...

Journal: :Philosophical transactions of the Royal Society of London. Series B, Biological sciences 2007
Justin J Meager Robert S Batty

Increasing turbidity in coastal waters in the North Atlantic and adjacent seas has raised concerns about impacts on Atlantic cod (Gadus morhua) using these areas as nurseries. A previous experiment (Meager et al. 2005 Can. J. Fish. Aquat. Sci. 62, 1978-1984) has shown that turbidity (up to 28 beam attenuation m-1) had little effect on the foraging rate of juvenile cod. Although this was attribu...

Journal: :Journal of clinical pathology 1992
C F Hirst L Poller

AIMS To investigate the cause of turbidity in reconstituted lyophilised plasmas and to determine its effect on coagulometers. METHODS The turbidities of 20 normal plasmas and 16 reconstituted lyophilised plasmas were determined by comparing a 1 in 4 dilution in distilled water with a standard suspension in an Aminco Fluorocolorimeter (American Instrument Co) in nephelometric mode. The turbidi...

ژورنال: علوم آب و خاک 2018

The goal of this study was to evaluate tannic acid as a coagulant in turbidity removal. Tests were designed using Taguchi method and carried out on the synthetic and natural turbid samples. In order to optimize turbidity removal by tannic acid, seven factors including pH, coagulant dosage, rapid mixing rate, slow mixing rate, slow mixing time, sedimentation time and initial turbidity were inves...

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