Factors affecting water quality and shrimp production in the mixed mangrove‐shrimp systems in the Mekong Delta of Vietnam

2021 ◽  
Author(s):  
Trang Thuy Diem Ngo ◽  
Tung Chau Thanh Nguyen ◽  
Thao Thi Phuong Vo ◽  
Linh Kieu Tran ◽  
Thanh Hai Nguyen ◽  
...  
Keyword(s):  
Water Quality ◽  
Mekong Delta ◽  
Factors Affecting ◽  
Shrimp Production

Factors affecting water quality in selected carbonate aquifers in the United States,1993-2005

2009 ◽  
Author(s):  
Bruce D. Lindsey ◽  
Marian P. Berndt ◽  
Brian G. Katz ◽  
Ann F. Ardis ◽  
Kenneth A. Skach
Keyword(s):  
United States ◽  
Water Quality ◽  
The United States ◽  
Factors Affecting ◽  
Carbonate Aquifers

scholarly journals A study on prediction method for ozone dosage and residual ozone concentration in advanced ozone water treatment

2017 ◽  
Vol 12 (1) ◽  
pp. 87-96 ◽  
Author(s):  
J. S. Hyung ◽  
K. B. Kim ◽  
M. C. Kim ◽  
I. S. Lee ◽  
J. Y. Koo
Keyword(s):  
Water Quality ◽  
Hydrogen Peroxide ◽  
Water Treatment ◽  
Environmental Factors ◽  
Real Time ◽  
Ozone Concentration ◽  
Prediction Method ◽  
Optimum Amount ◽  
Factors Affecting ◽  
Water Treatment Plants

Ozone dosage in most water treatment plants is operated by determining the ozone concentration with the experience of the operation. In this case, it is not economical. This study selected the factors affecting residual ozone concentration and attempted to estimate the optimum amount of hydrogen peroxide dosage for the control of the residual ozone concentration by developing a model for the prediction of the residual ozone concentration. The prediction formulas developed in this study can quickly respond to the environment of water quality and surrounding environmental factors, which change in real time, so it is judged that they could be used for the operation of the optimum ozone process, and the control of ozone dosage could be used as a new method in controlling the concentration of ozone dosage and the concentration of residual ozone.

scholarly journals Perceptions and determinants of households' participation in a randomized evaluation on water quality testing and information in southern Ghana

Water Policy ◽  
2017 ◽  
Vol 19 (6) ◽  
pp. 1206-1224 ◽  
Author(s):  
Charles Yaw Okyere ◽  
Felix Ankomah Asante
Keyword(s):  
Water Quality ◽  
Economic Benefits ◽  
Randomized Experiment ◽  
Subjective Analysis ◽  
Factors Affecting ◽  
Variable Approach ◽  
Quality Testing ◽  
Quality Issues ◽  
Household Heads ◽  
Southern Ghana

Abstract In this paper, we analyze perceptions and determinants of households' participation in a randomized experiment on water quality testing and information in southern Ghana. Beneficiary households assessed the components of the intervention including its relevance and adequacy in improving understanding of water quality issues. Motivating and constraining factors to participation in the randomized experiment are also assessed. We also estimate the correlates of participation in the intervention. Social and economic benefits derived from the intervention based on perceptions are compared with impacts of the intervention using an instrumental variable approach. We found evidence that subjective analysis estimates of the effects of the intervention are higher than the objective analysis estimates. Households generally perceived the intervention to be relevant in improving their understanding of water quality issues. However, there are differing opinions based on random assignment into either child or adult treatment groups on most- and least-liked attributes of the intervention, and also motivating and constraining factors affecting participation in the intervention. The factors that statistically and significantly influenced participation in the intervention include educational attainment, ethnicity, religious denomination and marital status of the household heads, in addition to the location of residence.

scholarly journals FACTORS AFFECTING INTERNATIONAL VISITORS’ PREFERENCE FOR LOCAL FRUITS IN THE MEKONG DELTA, VIETNAM

2020 ◽  
pp. 70-74
Author(s):  
Nguyen Quoc Nghi ◽  
Bui Thi Yen Ni
Keyword(s):  
Linear Regression ◽  
Sampling Method ◽  
Perceived Value ◽  
Mekong Delta ◽  
Factors Affecting ◽  
Product Features ◽  
Quota Sampling ◽  
Fruit Orchards ◽  
International Visitors ◽  
Culinary Culture

The objective of this study is to identify the factors affecting the taste of specialty fruits in the Mekong Delta of international visitors. The quota sampling method was used to interview 180 international visitors who have visited fruit orchards and enjoyed specialty fruits in the Mekong Delta. Applying the linear regression with the study has identified 4 factors affecting the preference for fruit specialties in the Mekong Delta of international tourists, namely "Culinary culture", "Information and experience", "Product features”, and “Perceived value". In particular, the factor "Information and experience" most strongly influences international visitors’ preference for fruit specialties in the Mekong Delta. KEYWORDS: Preference, specialties, fruit, Mekong Del

scholarly journals Risk Assessment for the Selected Surface Water Intake

2020 ◽  
Vol 50 (4) ◽  
pp. 147-163
Author(s):  
Dawid Szpak ◽  
Janusz R. Rak ◽  
Krzysztof Boryczko ◽  
Izabela Piegdoń ◽  
Jakub Żywiec
Keyword(s):  
Water Quality ◽  
Risk Assessment ◽  
Drinking Water ◽  
Surface Water ◽  
Water Intake ◽  
Security Measures ◽  
Efficient System ◽  
Factors Affecting ◽  
Risk Definition ◽  
Water Supply Company

AbstractThe purpose of the work is to analyze the risk for surface water intake, taking into account factors affecting the water quality. A three-parameter risk definition was proposed. It was found that the analyzed water intake has an efficient system that protects consumers against drinking water of inadequate quality (multibarier system). The task of the water supply company is to maintain its security measures (including a caution and warning station, biomonitoring) in a state of efficiency.

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