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Online since: September 2013
Authors: Zhong Min Wang, Y.M. Qi, S.P. Deng, Z.X. Meng, C.G. Wang
The traditional professional tools will cause enormous damage in crushing concrete steel sheets, steel bars and other metal materials.
The UHP water jet is a certain pressure of water through the nozzle.
The water pressure can be set on the touch screen.
On the touch screen the low water level alarm can be parked.
The water jet working pressure is set to 110 MPa, the flow of working water is 150L/h.
Online since: December 2012
Authors: Hui Xing, Shu Lin Duan, Ying Xin Wang, Zhan Hua Wu
Due to the constraints of small nacelle space and poor accessibility, appropriate and professional repair work is extremely difficult for maintenance staff and the quality of maintenance work is difficult to be guaranteed.
Once the fire extinguishing system is triggered, ventilators and fire dampers in ventilation ducts in protection zone automatically shutoff, water sprinkler and water spray extinguishing systems are mainly used for the protection of the tower structure, equipment and the safety of life.
In more developed wind power technology countries, a number of professional security companies has proposed a variety of fire protection solutions for wind turbine.
Fine water spray nozzles, specially designed to use the minimum amount of water to get the maximum extinguishing effect, were installed on the key parts of the wind turbines, such as main bearings, gearbox, brake system and generator, etc.
Water Resources and Hydropower Engineering, 2011, 42(2):86-89.
Online since: January 2015
Authors: Viktor S. Skuridin, Elena S. Stasyuk, Vladimir L. Sadkin, Natalya V. Varlamova, Evgeny A. Nesterov, Alexander S. Rogov
Introduction Over the recent years, biologists, physicists and health professionals have increasingly focused their attention on the development and application of nanopharmaeuticals in medicine.
A very bright example of nanocapsule carrier is a liposome, which is a closed water bubble surrounded by one or two layers of phospholipids.
The technique of nanocolloid preparation includes the following stages. 2 ml of water for injections is added to vial B.
Vial A is then placed in a boiling water bath for 15-30 minutes and after that it is cooled under cold running water.
The resulting mixture is heated in a boiling water bath (70-80 ºС) for 30 min and then cooled to room temperature.
Online since: October 2014
Authors: Qing Fu Yang, Yu Zhang, Han Rui Ma
Accumulated snow, rainstorm and the join of branches as well as the runoff of the Erdaobai River provide necessary water source for the formation of lahars.
A rheologic classification of subaerial sediment–water flows. in: Debris Flows/Avalanches: Process, Recognition and Mitigation, editied by Costa J E, Wieczorek G E, Geological Society of America.
Geological suvey professional paper, 1447-A, Washington: United States Goverment Pringting Office (1988) [9] Kevin M S.
Geological survey professional paper, 1447-B, Washington: United States Goverment Pringting Office (1989) [10] Kevin M S, et al.
S. geological survey professional paper, 1547, Washington: United States Goverment Pringting Office (1995) [11] Castruccio A, et al.
Online since: October 2014
Authors: Lei Liu
Quality control Process control Process control Process control Quality control in construction preparation Commen- cement report Each process Archives Subentry enginee- ring The comple- tion and acceptance Preparation of construction quality control of the main content is: each enterprise carefully check to participate in the project entity construction qualification, including professional subcontracting subcontracting, materialsand material suppliers; according to the basic principles of quality management, review project quality plan, quality requirements, implementationplan, including examination, treatment and other sectors to establish quality control preliminary scheme;, once appear quality problem, can quickly take thepreliminary scheme, guarantee the quality of the whole project.
Construction process quality control of civil engineering project generalintroduction of water construction methods, quality completion of every process will have an important impact on the next step, so be sure to pay attention to quality control in the construction process.
Therefore, cost accounting department and its personnel must have certain professional knowledge and higher occupation accomplishment, spirit, seek truth from facts and objective attitude towards the work of cost accounting, the accounting work scientific, reasonable, and has more value of reference.
Online since: September 2013
Authors: Jin Suo Lu, Bo Zhang, Xu Zhang
The cluster analysis method was employed to explore the relationship between the outflowing water quality of the reservoir and the water quality of each longitudinal water layer to provide technical solutions for predicting the outflowing water quality of the reservoir and reducing the cost of water purification in the water plants effectively.
Their forecasts are more accurate, but their method is complicated, and it is difficult for non-professional personnel to operate.
Case Study of reservoir and its water quality The Jinpen Reservoir is the main source of water supply of drinking water in Xi'an.
Samples of the water layer above the water intake outlet, the water layer below the water intake outlet (the depth of water intake to be determined according to the actual on-site conditions), the water layer directly at the water intake outlet as well as the confluence pool of the Jinpen Reservoir are also taken and kept in 500mL polyethylene plastic bottles for laboratory monitoring and analysis.
Therefore, for the deepwater Jinpen Reservoir, when the water quality indicators of each water layer are divided into 3 clusters, the outflow water quality of the reservoir water supply can be predicted more accurately.
Online since: May 2011
Authors: Jia Chen, Zhan Yuan Zhu, Jian Liang, Xian Bin Huang, Wen Hai En
Deep water hole plugged Deep water (depths up to 65m), low temperature (summer bottom temperatures as low as 5 ℃),Water pressure is high, demanding of the diving operations is high.
Special to the professional dive operators on the block over the water hole. 14m area of more than 40 over the water hole φ10cm.
If the pore blocking strict water hole into the concrete pier will go through walls and massive loss of empty containers.
Segment will be three sections of steel caissons (each 10) welded into the overall 14m high, gradually sink full of water.
Water Science and Engineering Technology Vol.5 (2005),p.11-12 [13] Wensheng Chai.
Online since: May 2013
Authors: Hassan Tukur, Mohd. Faris Khamidi, Adam Umar Alkali, Usman Aminu Umar
Builders, developers and material providers have addressed this demand by creating approaches and technologies that minimize energy, water and main material consumption, decrease greenhouse gas emissions and sustain or enhance surrounding ecological systems and services.
As a result, guidelines and rating systems have sought to assist professionals toward selections that decrease waste as well as negative ecological impacts linked to materials by means of prescriptive requirements for such characteristics as number of recycled content, locally produced or assembled products.
By incorporating a system of components and materials that work in harmony with each other, the objective is to produce an energy-efficient, water-saving structure that has a low carbon footprint.
Prospective green building materials gains consist of healthy indoor air quality, energy efficiency, resources savings, water conservation, enhanced build environment, improved natural ecology, and long-term economic savings.
Online since: November 2012
Authors: Li Jun Wang, Qiang Guo Duan
(3)Professional.
Selecting index should consider above all of the reservoir engineering professional characteristics, in this premise to use systems engineering methods to select index
Index comprehensive screening method in high water cut oilfield development effect evaluation [J].
BD block development effect evaluation of high water cut stage[D].
High pour point oil of water flooding development effect in fuzzy comprehensive evaluation of Shen 84 block [J].
Online since: September 2013
Authors: Chang Na Fan, Wei Long Tian, Zi Biao Wang, Xiao Ying Zhang
It targets clearly that we will make the energy conservation service industry annual sales grew 30% on adopting EPC mechanism and form 20 annual productions above 1 billion yuan of professional contract energy Management Company by 2015" [1].
(1) Fluid distribution equipment Fluid distribution equipment mainly refers to fan and water pump, which normally accounts for 40% ~ 75% of air conditioning energy consumption.
In EPC at present, we generally modify HVAC system by changing the appropriate fan, water pump or variable frequency regulating method.
In addition, cultivating professional technical personnel in EPC is also very important.
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