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Polyether can modify the water-soluble of copolymers.
Water (50 mL) was then added and the solvent was removed under vacuum.
To the residue was added CH2Cl2 (100 mL) and the organic layer was separated, another CH2Cl2 (100 mL) extract water phase twice, Combined CH2Cl2 phase and dried over anhydrous Na2SO4, and the volume was reduced to approximately 20 mL.
Gel permeation chromatography (GPC) measurements were conducted with a Waters 515 GPC with tetrahydrofuran (THF) as eluent (flow rate: 1ml/min, at 40˚C).
Acknowledgements This work was financially supported by the National Natural Science Foundation of China (31160198), the Applied Basic Research Project of Yunnan (2011FB084), High-End Technology Professionals Introduction Plan in Yunnan province (2010CI119), the Natural Science Foundation of Yunnan (2010FXW004) and the party member project of Yunnan University of Nationalities (2011HXDZB03).

The connotation of co-word analysis [3] is: when two professional terms (such as keywords) that can be expressed in a certain discipline research topic or direction appear in the same article at the same time, it means such two terms have a certain relationship.
Such as the Middle Route of South-to-North Water Transfer, the East Route of South-to-North Water Transfer, the West Route of South-to-North Water Transfer, South-to-North Water Transfer Project, South-to-North Water Transfer, unified for the " South-North Water Transfer"; the upper reaches of the Yellow River, the Yellow River Basin, the lower reaches of the Yellow River, the Yellow River, for the reunification of the " the Yellow River "; (2) to merge the nearly synonymous words, such as the optimal allocation of water resources, water resources allocation and management, water resources allocation, unified for "water resources allocation "; water transfer region, water transfer area, water diversion area, water exporting area, water source area, for the reunification of the "water exporting area".
Wherein, the top five (word frequency was above 100) were South-to-North Water Transfer, water transfer, water resources, inter-basin water transfer and effects.
Co-Word Matrix of High-Frequency Keywords (Part) South-to-North Water Transfer water transfer water resource inter-basin water transfer impact model South-to-North Water Transfer 318 21 39 24 62 13 water transfer 21 282 34 5 25 23 water resource 39 34 171 29 12 5 inter-basin water transfer 24 5 29 127 6 5 impact 62 25 12 6 103 11 model 13 23 5 5 11 70 Followed was the correlation matrix construction.
As a result, study on water transfer in China is mainly around the major inter-basin water transfer project like South-to-North water transfer and water diversion from Yangtze River to Taihu Lake, and focus on the impact on water environment, water resources carrying capacity, water security, and on the ecological compensation and risk assessment, and on water transfer scheme evaluation and optimization.

Thus, the volumes of oxidant and wastewater could be calculated for each experiment by a software of water physics properties when the temperature, pressure and oxidation coefficient were known.
Take the reactor out and immerse it into cold water once the time is up.
COD, BOD, NH4-N and chloride concentrations of concentrated leachate and liquid products were determined by the national standard methods for water quality analysis in China, respectively.
The pH of the samples was analyzed in a Sartorius Professional Meter (PP-15, Germany).
Many researchers have confirmed that pressure influence on SCWO is small when pressure is above the critical pressure of water [14,15].

The anti-floating structure checking and impact of changes of groundwater characteristics, water pressure and buoyancy and groundwater level are related to the water replenishment.
For these problems which have serious impact on building’s life and even the human life safety with the fluidity of water.
For roads, the site testing during the laying and the roadbed stability will be affected by water.
For the bridge, because of its special nature of the built environment, water impact is its major problem.
The sustainability of water is persistent destruction for the piers, which is inevitable, especially in rain-fed areas.

Research on Ecological Water Use and Rational Allocation of Water Resources in Wei Hai [D].
Study on Ecological water use in Yanchi county [D].
Eco- Environmental Water Demand Research in Reception Basin of Urban and Rural Drinking Water Source Engineering of Guyuan，Ningxia [J].
Water Demand and Water Consumption Calculation Method and its Application of Grass [J].
The Response of Water Resource and Sustainable Use under the Changing Environment——2009 Academic Conference Paper of Professional Committee on Water Resources Institute in Water Conservancy China:479-482; [7] Yongtao He, Wenhua Li, Guicai Li, Qingwen Min, HaizhenZhao.

From the different concentration of water purification contrast test, analysis of the material in ascension water purification system processing power play a role.
To different concentrations of water quality of different pollutants index, it can effectively improve water purification effect 18%-40%, and use of low cost, market broad prospect of application.
Test items unit Test values Test values Test method 1 Quality of per square meter g/m2 610 750 GB/T13762 2 Width mm 1040 1040 GB/T4667 3 Breaking strength Vertical KN/m 16.08 15.08 GB/T15788 Horizontal 19.20 18.20 4 Tear strength Vertical KN 0.62 0.52 GB/T13763 Horizontal 0.41 0.31 5 Peel strength Vertical KN/cm 1.37 1.27 FZ/T01010 Horizontal 1.57 1.47 6 Surface load bearing N/m2 120 110 GB/T17633 7 Repeated the water immersion test 23℃×168h Adhesive properties do not change Adhesive properties do not change GB1690 Application of materials Now for the materials, agricultural and environmental protection scientific research institutions in the professional field have use the AWPP materials into the water purification projects of agricultural river water and intensive livestock and poultry breeding wastewater as biofilm carriers, and carry out the corresponding tests and analysis.
For low concentrations of agricultural irrigation river water, according to 10 years of life estimates, every cubic water treatment facilities in accordance with 0.6m3/d load ability to calculate, which can deal with 2160m3 of waste water in ten years, so the treatment cost of per cubic meter of water is about US$0.046.
Heilongjiang Science and Technology of Water Conservancy, 35(5)(2007),224.

The Water Conservancy Water Electricity Construction Engineering Professional Result Analysis of Application Base on C4.5 Algorithm Hu Yong Information engineering department, Chongqing College of Water Resources and Electric Engineering, Chongqing, P.R.China ieis2014@163.com Keywords: Data mining, C4.5 algorithm, Decision tree Abstract.
We make an example of grade data which is from a certain college the water conservancy and electricity construction engineering profession.

Through analyzing the causes and damage of the fouling in water channel of water cooling engine, this paper develops a new kind of compound cleaning and descaling agent and conducting polyaniline corrosion agent of the water tank.
INTRODUCTION Dirty and fouling exist commonly in water channel of water cooling engine system, and their damage is very serious.
Additionally, the commonly existing fouling in water channel will erode base of engine and part of water radiator, especially in coastland.
The defects existing in current cleaning and descaling method are as follous: First, cleaning and descaling agent produces more corrosion to engine; Second, cleaning agent takes long time to descale (10hours), and the descaling effect is bad; Third, cleaning and descaling need professional and technical personnel's operation, moreover the craft is quite complicated.
Adding conducting polyaniline, the water tank antirusting agent will raise the corrosion resistant of engine's water cooling system by 2 to 5 times.

After that, various professional tests on uniformity, impermeability and frost resistance are provided to illustrate the performance of the colored concrete.
One is the uniformity of the color in other kind of ambient medium, such as water, and the other one is the uniformity of the same concrete with different color.
Considering the first situation, we submerge a colored sample block in the water in 7 days.
And after 7 days submerging, the water is still crystal and the sample does not fade.
The impermeability is the resistance performance of the concrete by the penetration of water and oil.

Preparation of Domestic Hot Water Using Air Source Heat Pump Water Heater Another way to produce domestic hot water is to use the compressor heat pumps with built-in water storage tanks.
Cold water temperature 10 °C 2.
Water density 1000 kg/m3 5.
Option II - Air Source Heat Pump Water Heater An alternative to a gas boiler in producing domestic hot water is air - water heat pump with an integrated water tank.
The calculations were made according to applicable standards, using professional software to perform environmental assessment - EKO Auditor 1.0.