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Water-based polyurethane forms continuous and dense film after fully drying.
Besides, water and solvent resistance of normal PU film is not ideal.
High speed mixer, Qingdao HaiTongDa Professional Instrument Plant; Thermostatical drying cabinet of the electric heat, TianJin ZhongHuan Experiment electric stove CO.
Solid density and water resistance were separately measured.
The influences of PU coating of soft and hard segment to water resistance of blocks.

Domestic solar hot-water heaters and large solar water heating systems are presently most successful applications of solar energy technologies in buildings.
Another problem is how to perform the integrated design of the solar water heating system for providing a comfortable, economic, high-quality hot-water supply.
The solar heat-collecting system and indoor hot-water system are separated so as not to be affected by pressure distribution of supply water.
The design shall both achieve integration with the building, and ensure the balanced heat supply and efficient operation of the system, which requires putting the solar application technology into the whole process of architectural design, then conduct the integrated design through the mutual penetration and full communication of every professional and related departments.
Winnett: Integrated appraisal of a solar hot water system.

The disciplinary knowledge service of university library is based on librarians’ professional knowledge and information science knowledge.Aiming at satisfying the demands generated by users during the acquisition,selection,absorption,utilization and innovation of knowledge,it searches,organizes, analyzes and reorganizes professional knowledge of the relevant disciplines, and provides the required professional knowledge service to teachers and students.
The farming culture and commercial culture are both born of water.
The wisdom enlightened by the benefit of the water of Poyang Lake has nourished the survival and development of human.

Central air conditioning chilled water system is combination of air handling unit and chiller water pump and chiller and cooling water pump and cooling towers, as shown in figure 1 [1].
Cooling water input and output temperature of cooling tower 3.
Power consumption and running frequency of cooling water pump 4.
Cooling water outlet temperature in a fixed case, power consumption of cooling water pump as the wet-bulb temperature and cooling water inlet temperature increases.
So will be limited non-professional background.

As for Chongqing, such a mountainous city with complicated topography, hydrology, geological conditions, different vegetations, soil types and other natural environment actuality, and due to the different occurrence of its economic development and urban construction, various areas of Chongqing are all different in respects of population, land character, land price, construction size and quality, road traffic, water and electricity network and other infrastructure construction.
Support from Other Professional Institutions.
Before the compilation of the regulatory detailed planning, Chongqing Urban Planning Bureau has entrusted a professional geological investigation unit to make geological disaster evaluations on the planned land and identify the construction land & non-construction land, which serves as one of the basis of the rational layout by the planning unit on the land functions.
Meanwhile, according to the principles of the combination of dynamics & statics and the collaboration of industriousness and idleness, the compilation of the planning shall draw on the traditional landscape culture, strengthen the establishment of the ecological environment, improve the residential environment and highlight the landmark buildings so as to create a well-arranged and lively landscape garden city against the mountains and facing the water and lay the foundation for the realization of the coordination and mutualism among the mountains, city and people.
Conclusion The mountainous cities are equipped with special natural geographical conditions and specific natural landscape advantages; hence, in combination with the favorable conditions, the regulatory detailed planning gives full play to the landscape resource advantages to protect and beautify the urban skyline, water boundary line and other key landscape mains, thus achieving the sound integration between the natural eco-system and artificial ecosystem, and really realizing the unity of economic, social and environmental benefits in the construction of the mountainous cities.

Introduction The gas hydrate is a mixture of gases and water vapor in deep water pipeline, and considered as undesirable solid which is formed in gas transportation line.
However, hydrate is a physical process of water and gas molecular properties rather than a chemical process[3].
Fourier equation is used for hydrate formation optimization Conclusion The formation of hydrate particles is caused by the change in flow velocity in deep water pipeline and also time delay effects in heat transfer that help in formation of mixture of gas and water.
Sloan, "Phase behavior of water/hydrocarbon systems," Petroleum Engineering Handbook, pp. 25-13, 1987
Tokyo: Gulf Professional Publishing, 2003

Since the green building design and green construction serve as the important means to carry out the strategy of sustainable development in the construction industry, it has already been understood for numerous professionals.
However, application of the concept of green construction can also generate savings in the construction .For example, by reducing the destruction of the construction site, earth excavation operation and the installation of artificial systems to reduce on-site clean-up costs; by monitoring water consumption, reducing water with re-using rainwater or construction waste in allowed occasions; through a more careful Procurement and re-use of resources and materials, reduce material costs.
Some water saving measures are not applied as the cost savings may be lower than its inputs if there is no systematic long-term use. 3.
Overall Frame Green construction general framework is composed by six aspects, including construction management, environmental protection, material-saving and material resources utilization, water-saving and water resource utilization, and energy saving and energy utilization, land-saving and construction land protection.
(3) Water-saving Measure According to the situation of local water resources, water-saving measures will be formulated

The Application of the Rayleigh Wave in Subgrade Layer Detection Okumura Ummin 1, a, Yujie Qi 2, b Jijun Zhao3, c and Zheng Jiang4, d 1School of Environment and Water Conservancy, Zhengzhou University, Zhengzhou, China 450001 2School of Environment and Water Conservancy, Zhengzhou University, Zhengzhou, China 450001 3Highway bureau in Sanmenxia city Henan Province, China 472000 4Highway bureau in Sanmenxia city Henan Province, China 472000 aming0501@163.com, bqiyujieasy11@163.com, czhenxiganghit@163.com,d1756855669@qq.com Keywords: Rayleigh wave; Subgrade layer; Nondestructive testing; LabVIEW Abstract.
Furthermore, because Rayleigh wave is a composite wave produced when longitudinal wave and transverse wave vibrating near the compound interface of medium, while gas and liquid fluid cannot produce shear wave, so Rayleigh wave dispersion curve will appear dislocation, break, gap, etc. where there is hole or water content[4,5].
Once the engineers know their professional measurement purposes and understand the graphical programming environment, they can achieve their measurement objectives, even they haven’t master the professional knowledge of computers [7].

GPRS data transmission in the application of remote monitoring system of water conservancy ZhiJun Guo1, a, Xianfeng yu2,b 1Zhejiang University of Water Resources and Electric Power, Hangzhou,Zhejiang,China 310018 2Zhejiang University of Water Resources and Electric Power, Hangzhou,Zhejiang,China 310018 aguozhj@zjweu.edu.cn, byuxf@zjweu.edu.cn Keywords: Remote monitoring.
Introduction With the development of economy, the shortage of water resources has become a global problem, the contradiction between the growing water demands and the shortage of water resources forced the governments around the world to find effective solutions.
Irrigation water management in reservoir mainly includes planning, water level data acquisition, pumping station opening and stopping, the control of gate, water flow test, water monitoring, calculation of water quantity and water costs and so on.
Establishing a set of economic and practical reservoir monitoring and management system of irrigation water, collecting the information of real-time monitoring for every point of level of water, monitoring the water level’s running state and the automatic control, changing the backwardness situation of artificial data record, has very important significance for water source scheduling, flood controlling and preventing drought.
Figure 1 The whole system structure Data transmission are two-way channel, channel placed in uplink channel transfer the professional data, alarm information, downlink channel data transmission instruction, in order to realize the stop valve, equipment of switch of automatic control and remote configuration, etc, and to reduce the failure rate and improve the system of reaction time.

Let the potential function of water head is .
The basic equation [3] of water head in the solution region can be expressed as: (1) Meanwhile, water head must satisfy two boundary conditions，one is water head boundary, the other is flow boundary.
Qi: Hydraulic structure (China Water Power Press, Beijing 2002, In Chinese)
Hu: Hydraulic engineering construction (China Water Power Press, Beijing 2007, In Chinese)
[7] The Professional Standards Compilation Group of People's Republic of China: design guide of construction diversion for hydropower and water conservancy project (DL/T 5114-2000) (China Water Power Press, Beijing 2000, In Chinese) [8] The Professional Standards Compilation Group of People's Republic of China: Design guide of cofferdam for hydropower and water conservancy project (DL/T 5087-1999) (China Water Power Press, Beijing 1999, In Chinese)