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With a collection of large amounts of information, Tang Xiuyi and other professionals came to the conclusion that the mercury content in the coal of China is particularly high, with the arithmetical mean of only 0.1×10-6 the country over and the arithmetical mean of 0.17×10-6[6] in the coal of North China.
But mercury is a kind of element that volatilizes easily; it can go in to air while burning or go in to soil or water together with ash content and such pollution needs our attention.

Because at the other end of the "Cloud", there are the most professional team in the world helping you to manage information, and the world's most state-of-the-art data center to help you to save the data.
Because at the other end of the "cloud", there are professional IT staffs helping you maintain hardware, helping you install and upgrade software, helping you to prevent viruses and all kinds of network attacks, helping you to do everything you've done on the PC.
Just like water production in accordance with the state regulations of relevant departments, it needs the appropriate laws and regulations promulgated by the state to constraint cloud computing service providers’ behavior and technology.

In the last a few decades, professionalization has been the main current of building trades development, like building, structure, water, electric, heating, intelligentize, fire control and safety.
Since BIM has the powerful and integrated message resource of life cycle, sharing cooperation based on BIM information can make every professional team to collaborate for one goal.
For multitudinous professional teams, premise of combined effort is reinforcing management and communication.

Which is more common is post-work-repair, because the operators lack of equipment maintenance concept, professional technology level is limited, the abnormal situation in, don't know how to do maintenance, as long as the equipment can operate, working people would not consider maintenance, resulting in small fault found no, wait for a lot of equipment failure, but can't solve, had to stop and wait for the specialist for processing.
Encourage internal professional maintenance personnel more than learning, and constantly improve their work skills.
China water transport (the second half of the month), 2012, 5 (11) : 13

Data were analysed using Lab View Professional Development System, including the Sound and Vibration Toolset and Order Analysis Toolset
Digital prototype of this stand was created in Autodesk Inventor Professional.
Bičejová, Water Jet Technology Head Vibration Generation due to Selected Technology Parameters Fluctuation Effect during Alloy Cutting, Applied Mechanics and Materials 308 (2013) 81-86

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 ).

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.

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.

Water shortage is a bottleneck restricting the development of arid zone agriculture, and precision irrigation is an effective way to achieve the sustainable development of dryland agriculture.
With the situation growing shortage of water resources in China, the increasingly widespread application of information technology in the field of agriculture, research and promote the use of intelligent water-saving irrigation will be an important direction for future agricultural development in arid areas.
In this paper, the Zig-bee wireless communication technology-based research arid zone intelligent irrigation key technologies, in order to improve the diagnostic accuracy of the irrigation water deficit, intelligent level and irrigation water use efficiency.
The layout of sensors in field layout of piping take main drains and sub-drains water.
NET development server side functionality, the use of C + + component development component of the professional program.

A survey on the tail gas contained HF of the electrolyzed aluminumindustry was analyzed at first,which included the applications of tail gas treating technology and gas purification devices both at home and abroad.Combining with their professional knowledge and engineering experience,a technical scheme was formed that purifying the tail gas with HF by a new progress,which designed a set of pilot plant about wet hydrogen fluoride absorption, and the optimization of this process scheme.
implement a set of equipment to meet different processing plans of absorption liquid absorption, and through experiment verification, continuously improve the process route, eventually exhaust emissions meet the national standards for environmental protection departments, emissions after secondary to absorb hydrogen fluoride was 3.8 mg/m3, national aluminum industrial pollutants emission standards GB25465-2010 in fluoride electrolysis exhaust emissions standards formulated by 4.0 mg/m3.And equipment safe and reliable operation, the desired research goal[4]. 1.Discussions of purification on tail gas of HF containing in aluminium industry The relevant enterprises all over the world to purify containing hydrogen fluoride gas there are two main ways, one is the wet absorption, another is called a dry adsorption.Domestic electrolytic aluminum industry to contain hydrogen fluoride gas with wet absorption process, according to the absorbent absorption purification method and divided into different water
alumina adsorption hydrogen fluoride adsorption properties, reaction fluoride alumina then added to the cell, thus reducing costs, has been widely used in flue gas purification recovery of electrolytic cell, but dry adsorption also some deficiencies.Because dry adsorption on the surface operation cost is low, avoid the secondary pollution.But in the actual operation process, when adsorbent to absorb hydrogen fluoride is close to saturation need to regeneration of adsorbent or replaced, the adsorbent regeneration methods mainly alkaline cleaning or washing method, it also can produce secondary pollution.So, electrolytic aluminium containing hydrogen fluoride industrial tail gas purification technology will also need to continuously improve process, to ensure that play a better role in the actual operation. 1.1 .Analysis of governance routes on fluoride flue gas by wet cleaning inaluminium industrial Electrolytic aluminium fluoride wet flue gas purification treatment methods usually take water
as absorbent.Of course,there are some other methods,sodium bicarbonate, calcium sulphate solution absorption solution absorption, pure alkali (sodium carbonate solution) absorption, caustic soda (sodium hydroxide) solution absorption method, etc. 1.2 .Process of wet purification of sodium carbonate solution as the absorbent The main working principle of HF containing flue gas by wet cleanings ,keeping a good contact with the aluminium fluoride gas and absorption liquid,under the premise of certain pollutants in the flue gas from the gas phase state into a liquid state, namely hydrogen fluoride gas is absorbed by water or alkali, and then will absorb toxic gases after the solution for subsequent processing, to make full use of, used in electrolytic production of fluoride salt, this comprehensive treatment methods are accord with the aim of the circular economy and green chemical.Typical of aluminium fluoride industrial gas treatment process is composed of the following links: absorbing