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1. Relationships between Total Dissolved Gas and Dissolved Oxygen in Water | |||
MA Qian,LI Ran,FENG Jingjie,WANG Lele | |||
Hydraulic Engineering 25 June 2013 | |||
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Abstract:Supersaturated dissolved gas can cause gas bubble disease in fish, potentially increasing their mortality. Previous studies have indicated that total dissolved gas (TDG) has a more serious impact on fish than other dissolved gases, such as dissolved oxygen (DO) or dissolved nitrogen. However, for many reasons, dissolved oxygen (DO) concentrations are generally used as a proxy for determining total dissolved gas (TDG) concentrations. Here, the relationships between TDG and DO concentrations are discussed relative to laboratory experiments and field TDG concentrations downstream of dam projects in China. The relationship between TDG and DO varied with time and space, and no clear or fixed relationship was observed between TDG and DO. Therefore, using DO concentrations to predict TDG supersaturation may result in large errors, and it is thus not appropriate to use DO concentrations as a predictor of TDG concentrations. | |||
TO cite this article:MA Qian,LI Ran,FENG Jingjie, et al. Relationships between Total Dissolved Gas and Dissolved Oxygen in Water[J]. |
2. Estimation of Evaporation using Penman Open Water Evaporation Equation (Comparative study) | |||
Fathelrahman Ali Mohammed ,Adam Ishag Ibrahim ,Mohamed Abd Allah | |||
Hydraulic Engineering 07 April 2010 | |||
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Abstract:This paper estimate Evaporation ( E0) using the Penman Open Water Evaporation formula and comparing the result with the observed Evaporation for daily meteorological data from xianfeng basin , In this paper the excel program is used to calculate the penman open water evaporation and the daily meteorological weather data recorded for one year ( 2008) were used to obtain the result. The study detects that penman the penman open water evaporation is the best method to estimate (E0). | |||
TO cite this article:Fathelrahman Ali Mohammed ,Adam Ishag Ibrahim ,Mohamed Abd Allah . Estimation of Evaporation using Penman Open Water Evaporation Equation (Comparative study) [OL].[ 7 April 2010] http://en.paper.edu.cn/en_releasepaper/content/41618 |
3. Small Scale study on Dinoseb Sorption Variability in Batch | |||
John Leju Celestino Ladu,Zhang Danrong,Thomas Oromo Henry ,Adam Ishag | |||
Hydraulic Engineering 04 November 2009 | |||
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Abstract:In this study, Herbicide Dinoseb (2-see-butyl-4, 6-dinotrophenol) was used as the main chemical found in the groundwater of the research area. The major mechanism found to influence the fate of herbicide transport in soil column is sorption and the most famous method in determining sorption property of chemicals in soil column is batch techniques. Sorption of herbicides onto root mass and soil organic matter has practical implications to the movement and distribution of herbicides. Herbicide binding in a soil can be weak or strong depending on the amount of organic matter present and the degree of decomposition of plant residue within the soil. Sorption is influence by some soil properties which can be seen in its spatial variation within soils although some few studies have investigated sorption variation parameters. The study intensively studied batch experiments with Dinoseb and different soil samples. In batch experiment, parameters are analyzed statistically and the relationships between the parameters and soil properties are investigated thoroughly. In the study, Dinoseb sorption parameters reflect spatial variations and distributed in the research area. Freudhch sorption coefficients of Dinoseb have genuine positive correlation with Organic Carbon contents but the relationship between the values and other soil properties, are not crucial. In the study paper, the heterogeneity of OC content accounts to about 90% of variability of Dinoseb. | |||
TO cite this article:John Leju Celestino Ladu,Zhang Danrong,Thomas Oromo Henry , et al. Small Scale study on Dinoseb Sorption Variability in Batch[OL].[ 4 November 2009] http://en.paper.edu.cn/en_releasepaper/content/36407 |
4. Study of dams\ | |||
Zhangping Wei,Han Chang-hai | |||
Hydraulic Engineering 20 October 2009 | |||
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Abstract:The continuous ecosystems of natural rivers are altered by construction of dams, which has several negative impacts on fishes. Those mainly includes: (1) Barrier of fishes migration routes, (2) Changes of hydrological and hydraulic conditions for fishes spawning, (3) Reduction and destruction of habitats, (4) Influences of gas supersaturation, (5) Influences of discharged low-temperature water. This paper summarizes some research achievements home and abroad, and then it offers two kinds of solutions to those problems: One is engineering measure, such as installing environmentally friendly hydropower turbines and building ecological fish passages in hydraulic structures; the other is non-engineering measure, which includes Fishes Nature Reserves, ecological compensation and regulation, artificial propagation and stocking, etc. | |||
TO cite this article:Zhangping Wei,Han Chang-hai. Study of dams\[OL].[20 October 2009] http://en.paper.edu.cn/en_releasepaper/content/35937 |
5. Characteristics of the circulation off the North-West coast of Australia | |||
Tian Lei ,Nicole L. Jones,Gregory N. Ivey | |||
Hydraulic Engineering 24 February 2009 | |||
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Abstract:The Indonesian Throughflow is made up of a series of ocean currents which flow from the tropical Western Pacific Ocean through the Indonesian Seas into the South Indian Ocean. The Leeuwin Current System, along the coast of Western Australia (22.1 o S?4.1 o S), forms a unique eastern boundary regime in which tropical waters flow poleward. The source waters of the Leeuwin Current are not well understood. Here we use the output generated by the numerical modelBluelink Reanalysis to analyze the characteristics of the large-scale oceanography of the Browse Basin and Bonaparte Basin, including the characteristics of the Indonesian Throughflow. The model shows that after emptying into the Indian Ocean, most of the Indonesian Throughflow (~ 7Sv) goes westward at 11篠- 13篠, sometimes in the form of eddies棏teddies? | |||
TO cite this article:Tian Lei ,Nicole L. Jones,Gregory N. Ivey. Characteristics of the circulation off the North-West coast of Australia[OL].[24 February 2009] http://en.paper.edu.cn/en_releasepaper/content/29545 |
6. Applicability Analysis of Calculation Methods for ET0 with Limited Weather Data in Wuhan | |||
HE Jun,CUI Yuanlai,LI Yuanxiang | |||
Hydraulic Engineering 08 January 2009 | |||
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Abstract:The reference crop evapotranspiration of each typical hydrological years in Wuhan is calculated respectively by Priestley-Taylor formula, Hargreaves formula and Penman-Monteith formula. Based on the results of Penman-Monteith formula, the outcomes of Priestley-Taylor formula and Hargreaves formula are analyzed. It shows that there is no significant difference between the results of Hargreaves formula and Penman-Monteith formula. When the weather data required by Penman-Monteith formula was unavailable in this district, Hargreaves formula can be used to calculate ET0 instead of Penman-Monteith formula. There are many differences between the results of Priestley-Taylor formula and Penman-Monteith formula, Priestley-Taylor formula needs modified when used to calculate ET0 instead of Penman-Monteith formula in this district. | |||
TO cite this article:HE Jun,CUI Yuanlai,LI Yuanxiang. Applicability Analysis of Calculation Methods for ET0 with Limited Weather Data in Wuhan[OL].[ 8 January 2009] http://en.paper.edu.cn/en_releasepaper/content/27471 |
7. Application of Generalized Maximum Entropy Principle in Dam Safety Evaluation | |||
Gu Yanling,Yin Tao | |||
Hydraulic Engineering 11 April 2008 | |||
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Abstract:The entropy theory is introduced into dam safety evaluation in this paper. The generalized maximum entropy principle which can integrate various methods to determine weight is applied to obtain the weight of multi-index in dam safety evaluation. The method maximizes Shannon entropy of all random variables simultaneously to obtain relatively reliable and accurate results. A project example is given to prove this method feasible. Thus this paper provides a new idea to determine multi-index weight for similar projects. | |||
TO cite this article:Gu Yanling,Yin Tao. Application of Generalized Maximum Entropy Principle in Dam Safety Evaluation [OL].[11 April 2008] http://en.paper.edu.cn/en_releasepaper/content/20356 |
8. Numerical simulation of sloping battle pile structure-high filling interaction in deep water harbor | |||
WANG Chong-yu,LIU Xiao-ping,CAO Yan-min,YANG Jing | |||
Hydraulic Engineering 24 March 2008 | |||
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Abstract:Deep water high-pile wharf was constructed at outside sea, structure of inland needs high filling. The bulkhead will bear the soil pressure which produced by filling. Certain harbor was designed as structure-bulkhead structure of battle and sheet pile foundation, In view of that wharf was built on soft foundation, the structure system’s internal force will be quite complicated. This paper presents numerical simulation method to simulate high filling process, analyzes the structure’s deformation and mechanics, sums up some rules about this structure. The analysis and conclusions of this paper can be used as a reference for similar projects in future. | |||
TO cite this article:WANG Chong-yu,LIU Xiao-ping,CAO Yan-min, et al. Numerical simulation of sloping battle pile structure-high filling interaction in deep water harbor[OL].[24 March 2008] http://en.paper.edu.cn/en_releasepaper/content/19628 |
9. Numerical Calculation of the Impact of Offshore Wind Power Stations on Hydrodynamic Conditions | |||
Zhang Wei,Xia Haifeng,Wang Bin | |||
Hydraulic Engineering 28 August 2007 | |||
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Abstract:To study the impact of the foundation structures of offshore wind energy plant on hydrodynamic conditions, a 2-D hydrodynamic numerical model was developed, including the Yangtze Estuary and the Hangzhou Bay. The results show that the influence is related with the characteristics of tidal current and the arrangement of foundation structures. As far as the Shanghai Offshore wind power stations are concerned, the impact on the tidal currents is limited in the region around the structures. | |||
TO cite this article:Zhang Wei,Xia Haifeng,Wang Bin. Numerical Calculation of the Impact of Offshore Wind Power Stations on Hydrodynamic Conditions[OL].[28 August 2007] http://en.paper.edu.cn/en_releasepaper/content/14734 |
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