scholarly journals Simulation of Phosphorus Concentrations in River Water Based on Phosphorus Load

1991 ◽  
Vol 14 (11) ◽  
pp. 806-814,795
Author(s):  
Kazuto TAKIMOTO ◽  
Tadayoshi KAWASHIMA ◽  
Yasunobu ARIYOSHI ◽  
Tetsuro KITAIDE ◽  
Yoshihiro KAWAI
Keyword(s):  
River Water ◽  
Phosphorus Load ◽  
Water Based

scholarly journals Optimization for the Determination of Hydrogen Peroxide in River Water Based on the Fenton Reaction with Terephthalate

2019 ◽  
Vol 68 (2) ◽  
pp. 125-131 ◽  
Author(s):  
Ryuta UEKI ◽  
Ryota KATO ◽  
Yoshitaka IMAIZUMI ◽  
Yoko IWAMOTO ◽  
Waqar A. JADOON ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
River Water ◽  
Fenton Reaction ◽  
Water Based

A novel analytical tool for quantification of estrogenicity in river water based on fluorescence labelled estrogen receptor α

2009 ◽  
Vol 395 (6) ◽  
pp. 1769-1776 ◽  
Author(s):  
Alexander Fabian Le Blanc ◽  
Christiane Albrecht ◽  
Tomas Bonn ◽  
Peter Fechner ◽  
Günther Proll ◽  
...  
Keyword(s):  
Estrogen Receptor ◽  
River Water ◽  
Estrogen Receptor Α ◽  
Analytical Tool ◽  
Water Based

scholarly journals Evaluation of anthropogenic pollution in river water based on the genetic diversity of Aeromonas hydrophila

2012 ◽  
Vol 38 (3) ◽  
pp. 41-50 ◽  
Author(s):  
Karol Korzekwa ◽  
Iwona Gołaś ◽  
Monika Harnisz
Keyword(s):  
Genetic Diversity ◽  
River Water ◽  
Aeromonas Hydrophila ◽  
Microbiological Quality ◽  
Anthropogenic Pollution ◽  
Electrophoretic Patterns ◽  
Quality Of Water ◽  
Water Based ◽  
Many Sources

Abstract Aeromonas hydrophila is a valuable indicator of the quality of water polluted by sewage and pathogens that pose a risk for humans and cold-blooded animals, including fi sh. The main aim of this research was to evaluate anthropogenic pollution of river water based on genetic diversity of 82 A. hydrophila strains by means of RAPD, semi-random AP-PCR (ISJ) and the rep-BOX conservative repeats test. Genetic diversity of A. hydrophila was HT = 0.28 (SD = 0.02) for all DNA markers (RAPD, semi random and rep-BOX). None of the analyzed electrophoretic patterns was identical, implying that there were many sources of strain transmission. The presence of genes for aerolysin (aerA), hemolysin (ahh1) and the cytotoxic enzyme complex (AHCYTOGEN) was verifi ed for all tested strains, and drug resistance patterns for tetracycline, enrofl oxacin and erythromycin were determined. The most diverse A. hydrophila strains isolated from river water were susceptible to enrofl oxacine (HS = 0.27), whereas less diverse strains were susceptible to erythromycin (HS = 0.24). The presence of the multidrug resistance marker (ISJ4-25; 1100 bp locus) in the examined strains (resistant to three analyzed drugs) indicates that intensive fi sh cultivation affects the microbiological quality of river water.

Study of Recreational Use of Sydney Water Board and Fish River Water Supply Storages (Australia)

1989 ◽  
Vol 21 (2) ◽  
pp. 119-122
Author(s):  
I. H. Sharp ◽  
M. A. Schell
Keyword(s):  
Water Quality ◽  
Quality Control ◽  
Water Supply ◽  
River Water ◽  
Control Measures ◽  
Water Quality Control ◽  
Community Attitudes ◽  
Water Board ◽  
Water Based ◽  
Recreational Use

Existing and potential recreational uses in a number of very different water supply catchments managed by two major N.S.W. authorities were investigated. Community attitudes to recreational use of both land based and water based activities were analysed together with reactions to increased charges to cover costs of ensuring safe water quality. Threats to water quality were studied and additional management and water quality control measures formulated.

scholarly journals Capacitance-based microfluidic device for early ammonia detection in river water

2020 ◽  
Vol 20 (2) ◽  
pp. 761
Author(s):  
Muhammad Muhaimin Bin Ramli ◽  
Mohd Ridzuan Bin Ahmad
Keyword(s):  
Finite Element Analysis ◽  
River Water ◽  
Microfluidic Device ◽  
Hardware Implementation ◽  
Electrical Circuit ◽  
Capacitance Measurement ◽  
Element Analysis ◽  
Water Based ◽  
Ammonia Detection ◽  
The Difference

<p>This paper proposes a design of a microfluidic device for early detection of ammonia in river water based on capacitance measurement. A microfluidic device is designed and simulated to measure the content of ammonia in river water by using the COMSOL finite element analysis (FEA) software. This paper describes the system in detail from the conceptual idea to the hardware implementation. The microfluidic device works by inserting the sample of water into the device to be tested. A pair of electrodes is connected to the electrical circuit and the value of the capacitance of the water sample is measured. The tested samples are normal river water and contaminated river water which have ammonia in it. Several investigations have been done via the simulation, i.e. the size of the electrode, the difference in water flow gap, the distance between the electrode, speed of the water and the capacitance of the water. The results show that the proposed microfluidic design is capable to detect ammonia inside river water under 2 ppm concentration.</p>

scholarly journals Quality of Cikawung river water based on phytoplankton diversity

2021 ◽  
Vol 1098 (5) ◽  
pp. 052018
Author(s):  
L S Mulyani ◽  
Y Amarulla ◽  
S Wahjuningsih ◽  
R Muthmainnah
Keyword(s):  
River Water ◽  
Phytoplankton Diversity ◽  
Water Based
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