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Scholars and professionals in many countries have always been attempting to improve the production of xylanase.
After cultivation, the cells were collected by centrifugation (3,000 g×15 min), then washed twice with distilled water and 50 mmol/L phosphate buffer (pH 7.0), finally lyophilized for 24 h by a freeze drying system.

At the same time, Using the FLAC3D powerful post-processing to do numerical simulation of the model, we can draw a variety of ideal analysis data, provide the basis to determine to technical professionals, ensure the scientificalness of the technical implementation [3].
Beijing: China Water Power Press(2009)

Problems of Doors and Windows Stucco Construction Traditional windows and doors installation and construction often arranged before the wall paint job, the Practice has proved that the construction method has poor water resistance, the sash is easily damaged and long construction has period shortcomings. 
In addition, the construction unit should be targeted at different types and different people carry out the necessary safety knowledge, education and professional skills training. 
At the same time, the construction unit of the construction work is important to organize professional and technical personnel serious triage construction drawings, and should be strictly in accordance with the specific circumstances of the construction project, optimize the construction drawings to eliminate some of the dominant issues of the construction drawings and hidden issues. 

The extruded plates were held at 450 ℃ and 470 ℃ separately for 1 h，then kept at 480 ℃ for 2 h for stepped solution treatment, then were quenched in ambient temperature water.
Acknowledgements The research has been funded by National Basic Research Program of China (No 2005CB623704 ) and National Natural Science Foundation of China (No 50471057)and New Century Talented Professionals Program of Chinese Education Ministry (No NCET-04-0753 ).

Relying on the professional field or self-developed software platform virtualization technology platform to achieve virtual reality campus roaming.
Use the game engine to implement virtual reality Articles produced a school of the virtual scene based on UDK (Unreal Development Kit) Unreal 3 game engine development kit, and create a virtual reality of the campus by terrain, buildings, plants, water these elements, the basic process shown in Figure 1.
Fig3 Simulation diagram of three-dimensional above ground coal mines Conclusion In the rapid development of virtual reality technology, virtual reality applications continue to expand today, virtual reality technology have very broad prospects in the direction of the professional use.

Lack of efficient classification and professional equipment, low dismantling skill and re-destruction, directly affect the use of renewable resources, lowering the profit eventually.
Some of the leakage infiltrated into the ground and polluted the soil and underground water.
By strengthening the contact and cooperation with professional dismantling companies, relying on existing end-of-life vehicle recycling and dismantling enterprises, breaking the limits of industry, regional and ownership, combining industry resources, technology, capital and the rational flow of talent, implementing scientific management, we will eventually establish an orderly operation mechanism of the recycling and dismantling work.

Steam generators working in nuclear power plants convert water into steam from heat produced in the reactor core and each of them contains from 3,000 to 16,000 tubes.
Introduction Steam generators in pressurized water reactor (PWR) are heat exchangers that transfer heat from the primary reactor coolant system to the secondary-side feedwater to produce steam and each of them contains from 3,000 to 16,000 tubes.
However, integrity evaluation procedures are too complicated and hence only trained professionals are able to operate the system.

- Soil and water pollution.
When decomposing, these waste poisons air, soil, and underground water and thus create a serious danger for the environment and people.
Clarification of objectives, preparation of action plans Involvement of key persons Involvement of local chief executive, community leaders and farmers Cooperation with stakeholders Cooperation with business associations, agricultural associations, women's associations Allocation of personnel Designation of departments and officers in charge Collection of information Interviews with experts on composting technology and agriculture Study of select cases Visits to sites and interviews with key persons Review of case studies Study on the feasibility of separating organic waste at source in the model area, verification of the effectiveness of compost on agriculture Organization of explanatory meetings Arrangement of periodic briefings for residents and other stakeholders Implementation of public relations campaigns Distribution of information on composting projects in local magazines, websites, SNS, and personal communications Organization of lectures by experts Arrangement of scientific lectures by professionals
Mukha, "Journal of Water and Land Development," vol. 45, no.

The crystalline mixture of natural gas and water forms the hydrates.
The flow stratified regime and thermodynamic conditions arrive and gas is dissolved in the water phase that forms the hydrate.
It is assumed that the hydrate shell temperature is the same as the hydrate water interface.
The heat transfers through the water phase and forms a hydrate in the deepwater pipeline.
USA: Gulf Professional Publishing an imprint of Elsevier Science, 2003

., LTD, in the base of professional GIS software that is provided by SuperMap GIS 5.0. this system uses Visual Basic 6.0, SQL Serve 2000 as database for Secondary development to Integrating clustering analysis technology module, the general structure is shown in figure 1.
SuperMap GIS uses the map of Beijing whose scale is 1/50000 as map: stores the spatial data such as Region, Surface Water, The Green, Industrial Enterprises, provides select and visual function for Clustering analysis model in the system platform.
Class II: includes 4 enterprises, its feature is that the emissions of the industrial wastewater and chemical oxygen demand is maximum, this illustrate that the index of water pollution control is the highest.
The Integration of Clustering by SuperMap to the rapid analysis of the selected study area prompts us that we should pay more attention to focus on governance of the east and west sides of focus (emission: class V, waste water: the first II, solid waste: type III) sources of pollution in the first.
[3] Wanghao, Shenhong, Research on Application of GIS Technology in the Comprehensive Water Resources Planning for the Huaihe River Basin HYDROLOGY, 2005, 2, 25(1): 42 – 45