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The safety of biomaterials for humans has become a big concern in recent years and a matter that dental professionals should take into consideration.
Powder: 70% TiO2, 15% BaSO4, 15% (BiO)2CO3 Liquid: 60% Polyacrylate, 15% Polyacrylic acid, 25% distilled water Powder/liquid Ratio: 1.40 g/ml and 1.17 g/ml Components of canals ®N (SHOWA YAKUHIN KAKO, TOKYO, JAPAN) Powder: 40 % ZnO, 30 % Rhodine, 15 % BaSO4, 15 % (BiO)2CO3 Liquid: 50 % Fatty acid, 50 % Propylene glycol Powder/liquid Ratio: 3.33 g/ml and 2.33 g/ml The properties of flow, working time, setting time and film thickness were determined according to ISO formulation 6876 for dental cements [5-7].

The setting time indicates the working time the professional has to carry out the clinical procedure.
It is currently widely used by professionals to seal the pathway between the root canal system and the external surface of the tooth.
Before filling, the samples were stored in 100 ml of 0.03% chlorexidine solution for 30 minutes, then immersed in deionized water for 10 min and dried with absorbent paper.
Each filled tube was sealed in a flask containing 10 mL of deionized water and stored at 37o C and RH between 95 and 100%.
After 24 h, the tubes were removed and placed in another flask with an equal amount of new deionized water.

In practice, a large number of energy professionals are involved in performing calibarated simulations, and many more profess an active interest in this ares [3].
In order to recover surplus heat, water loop heat pump was a good choice.
Water loop heat pump system is a cooling/heating air-conditioning system in which some small water/air heat pumps are paralleled together by water loop, and can reuse buildings surplus heat.
However, water loop heat pump would be better to recover surplus heat.

But the inevitable result is the serious pollution of the land, water, forest and agricultural resources.
Mining destruction of land started under control and abandoned mine land began to be used, also water pollution had been effectively controlled.
After that proposed harvesting complex row of train operations and heap -shaped landforms farming methods, such as engineering and biological reclamation, dredging discharge water, land leveling, land subsidence of terraces, terracing and other non- technical testing.
The ecological restoration research has mining, geology, surveying, agriculture, geography, soil science, environmental protection, water conservation, ecology, land use planning and utilization, forestry and other professionals.
It can’t found ecological restoration effects in deeper level, such as in landscape connectivity, soil water area, anti-erosion effect of landscape pattern, vegetation productivity and other aspects, we need to conduct further researches.

Songyuan Nie [5] ,from the view of water environment capacity, set PoTang river as an example, study the determination of the design flow and optimized control of water quality with the systems analysis method.We must use the system theory to study the various subsystems and the overall structure.
Fig.1 The method of combination of "top-down" and "bottom-up" The technology roadmap For a complete regional sustainable development planning decision support system, it should have the following elements: the theory of geographic system analysis, geographic information technology, regional urban model, professional planning model, the theory of regional sustainable development, visualization techniques and other computer technology.
The standardized approach is. 3.2 The study of the model As for the characteristics of regional sustainable development, we intend to create six types of models, which are geographic model, ecological model, water-saving model, urban economic model and system planning model.
As an important component of resource ,water resources facing the shortage in North China, we need to establish water-saving models to make the rational use of water resources.
[4] Min Liu; Qian Wang; Lianhua Chen, regional analysis by system analysis method [5] Songyuan Nie, "systems analysis method in water management

Designers focus on siting, energy and water use and conservation, air and water quality, and use of natural resources.
As design professionals we must commit ourselves to an increasingly aggressive vision and hold ourselves accountable for the work we do to realize a bright green, or living future [7].

The chicken feather was soaked into water solution containing 1g/L wetting agent JFC for 30 minutes, and then rinse thoroughly with running water to remove oil contained in feather, and finally dry for further use.
In experiment, three fixed experienced professionals were selected to evaluate the bleaching effect through the handle and the visual ratings, and then the averages of three groups of data were regarded as the final test results.

This system mainly provides service to culture admiration professionals beyond the museum, and at the same time, provides browse subtitle service of related resources to the majority.
In material culture field, Wu Culture mainly embodies in water conservancy culture, rice planting culture, silk culture, residence building and garden fields; and in nonmaterial fields, Wu Culture contains very rich contents, such as education, traditional medication, literature art, Kun Opera, Pintan, etc.
Wu Culture Water is not only a culture exhibition research platform, but also an education and teaching platform of culture transmitting.
Taking part in the construction of digital Wu Culture Corner is much a good teaching and practicing method, not only learning related knowledge about Wu culture, but also improving own professional ability.
Besides, in the whole construction process, it is closely combined with teaching activities, make much contribution in enlarge teaching scale, promoting students’ literary quality, and improving students’ professional skills.

This work is performed with the aid of a professional software for a rigorous mass and energy balances simulation to achieve process data for plant technical and economic analysis.
System Assumptions Heat exchangers Minimum approach temperature of 50ºC (gas-gas) and 10ºC (water-water).
Cooling Water System (CWS) Coolers use cooling water (CW).
Table 5 summarizes the main water results.
Water consumption (m3/h).

The effects of controlled gradual or shock water cooling were monitored on the basis of physical and mechanical properties.
It is generally known and has been proven in a wide range of professional studies and publications that concrete and/or ferroconcrete is subject to significant degradation when is subjected to the effects of extreme temperatures.
Three types of cooling were simulated – air cooling (gradual and sudden) and water cooling (rapid).
Proposal of formulas and testing methodology Information in professional literature on the relevant topic was taken into consideration before proposal of the formulas.
The water coefficient was approximately 0.5 which ensured its workability.