نتایج جستجو برای: input turbidity

تعداد نتایج: 226960  

2003
DEBORAH E. HOFSTRA JOHN S. CLAYTON KURT D. GETSINGER

Diquat is the only herbicide registered in New Zealand for the control of submerged invasive weeds such as hornwort or coontail ( Ceratophyllum demersum L) . However, under turbid conditions, binding to clay and charged particles in the water may deactivate diquat. To determine whether endothall achieved better control of Coontail under turbid conditions, both diquat and endothall were applied ...

2016
Yin Zhang Ajian Zhou Yue Liu Ying Zhao Li Zhang Leilei Sun Shiyu Du Qiang Yang Xin Song Chaoyang Liang Xia Ding

Background. Traditional Chinese medicine (TCM) has long been used to treat chronic atrophic gastritis (CAG). The aim of the present study was to evaluate the TCM syndrome characteristics of CAG and its core pathogenesis so as to promote optimization of treatment strategies. Methods. This study was based on a participant survey conducted in 4 hospitals in China. Patients diagnosed with CAG were ...

2008
S. A. Talke H. E. de Swart H. M. Schuttelaars

Motivated by field studies of the Ems estuary which show longitudinal gradients in bottom sediment concentration as high as O(0.01 kg/m), we develop an analytical model for estuarine residual circulation based on currents from salinity gradients, turbidity gradients, and freshwater discharge. Salinity is assumed to be vertically well mixed, while the vertical concentration profile is assumed to...

Journal: :Journal of water and health 2012
Pascal Beaudeau Alain Le Tertre Abdelkrim Zeghnoun Antonella Zanobetti Joel Schwartz

The 80,000 inhabitants of the lower part of Le Havre obtain their water supply from two karstic springs, Radicatel and Saint-Laurent. Until 2000, the Radicatel water was settled when turbidity exceeded 3 NTU, then filtered and chlorinated, whereas the Saint-Laurent water was simply chlorinated. Our study aimed to characterize the link between water turbidity and the incidence of acute gastroent...

2018
Linjuan Sun

Mitochondrial factor and cell cytokines play important roles in the incidence of vascular dementia (VD), but their correlations with inflammatory and mitochondrial factors and the role of both in the kidney essence deficiency pattern and phlegm turbidity blocking orifice pattern are not clear. This study was aimed at studying the correlations between the serum mitochondrial factor and cell cyto...

ژورنال: طلوع بهداشت یزد 2016
ابراهیمی, افشین, اسماعیلی, حمزه, جعفری, نگار, پورزمانی, حمیدرضا,

Abstract Introduction: Water turbidity is caused by some particles, organic compounds and microorganisms. This study aimed to evaluate the performance of magnetic nanoparticles coated with chitosan as a cationic polymer in turbidity removal from aqueous solution. Methods: In this empirical study, the chemical co-precipitation technique was used to synthesize the magnetic nanoparticles coa...

2014
Marcelo H. Garcia Ven Te Chow

Our main goal is to assess the hydrodynamics of turbidity currents and mudflows and their ability to produce morphological features such as ripples, dunes, antidunes and gullies along their paths. Of particular interest is to elucidate the role played by turbidity currents on the inception of submarine channels and canyons. To this end, understanding the mechanics of sediment erosion, including...

1999
JOSEPH N. BOYER JAMES W. FOURQUREAN RONALD D. JONES

Analysis of 6 yr of monthly water quality data was performed on three distinct zones of Florida Bay: the eastern bay, central bay, and western bay. Each zone was analyzed for trends at hrtra-annual (seasonal), interammal (oscillation), and long-term (monotonic) scales. The variables TON, TOC, temperature, and TN : TF’ ratio had seasonal maxhna in the summer rainy season; APA and Chl a, indicato...

2002
Barbara R. Williams Robert A. Gelman Donald C. Poppke Karl A. Piez

Soluble rat tail tendon collagen with intact nonhelical ends and largely free of aggregates was used to study fibril formation in vitro. The process was initiated by raising the pH and warming a cold solution of collagen. Fibril formation was monitored by turbidity and the product was examined by electron microscopy. Optimal conditions that will form fibrils similar to those observed in vivo ar...

Journal: :Environmental science & technology 2009
Eric S Money Gail P Carter Marc L Serre

Escherichia coli (E. coli) is a widely used indicator of fecal contamination in water bodies. External contact and subsequent ingestion of bacteria coming from fecal contamination can lead to harmful health effects. Since E. coli data are sometimes limited, the objective of this study is to use secondary information in the form of turbidity to improve the assessment of E. coli at unmonitored lo...

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