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In the cathode side, oxygen, electron and hydrogen ion occurs reduction reaction producing water under the catalysis of the catalyst.
When the electrode on the bipolar plate is flooded with water, the influence on the gas flow is not as serious as that about the conventional flow field with rectangular section, shown as Fig.4: Fig.4 Sketch of the sections of the different flow channels flooded with water Numerical simulation This paper simulates the novel flow field and the conventional serpentine flow field by the professional CFD (Computational Fluid Dynamics) software Fluent in order to research some key factors which have the significant influence on the operation performance of PEMFC such as the velocity distribution, the gas pressure difference between the inlet and the outlet and so on.
Because the water produced during the operation of PEMFC emerges at the cathode of the bipolar plates, so we main study the flow field at the cathode of the bipolar plates.
Though this situation is favorable for promptly discharging the water produced during the operation of PEMFC, but it can also induce an inadequate reaction which will result in the low operation efficiency of PEMFC.
While the gas pressure difference of this novel intersectant flow field is moderate, this flow field not only can satisfy the requirement for discharging the water timely, but also can save the power used in driving the reactive gases.

(3) Clean up the floor debris—use the water pipe flushing method to make sure the floor seam flush no sundry
(4) Clean up the debris at the bottom of floor—use water pipe flushing, steel brush make floor below clean. 5.2 Select concrete mixture ratio Choose C30 fine aggregate concrete to reduce concrete's shrinkage, strictly control the water cement ratio (the mixture ratio of 1:1. 5:2. 35:0. 43). 5.3 Concrete pouring and vibrating (1) According to construction sequence, complete concrete arrangement to make sure construction quality of concrete pouring and vibrating
After 8 hours brush the whole floor again with glue adding 5%-10% XX prime cement with a layer, and then paint the ceiling using cement mortar. 5.6 Maintenance the cement hydration needs to keep wet for a certain time in order to ensure the concrete in the hardening process, so before not ceiling painting, take water per hour and conduct comprehensive maintenance should be made. 5.7 Painting the ceiling (1) snap the line, set square, find the rules, according to a 50 cm horizontal line near the roof to find out the flat line around roof, as roof plastering control level
(3) wipe the ash—when the roof keeps wet, brush XX glue with a 5%-10% pigment slurry(water cement ratio 0.4-0.5).
Quality control (1) construction operational personnel must first be trained to have some working experience, and professional personnel can prevent floor seam cracking in the construction

PROTEM47 TEM instrument 2.1 Instrument Introduction Instrument using TEM instrument the Canada Geonics developed PROTEM47 type, the company's development and production time domain electromagnetic instrument professional company, with nearly 20 kinds of time domain electromagnetic measuring instrument used in a variety of different purposes and occasions in international enjoy a high reputation.
The TEM instrument of its production mainly: PROTEM47 PROTEM47HP ( underground exploring water system), PROTEM57-MK2, PROTEM67 and enhanced PROTEM67 etc. 2.2 Detection principle Transient electromagnetic method is an artificial source electromagnetic method has high anti-interference ability and resolution.
In different colors representing different resistivity of figure 4, representative of the red area resistivity, indicating here seam continuity preferably, more dense; represents a minimum resistivity of the blue region, the resistance is abnormal, may contain instructions seam water.
Can be combined with geophysical means unknown to the collapse of the regional distribution of drop zone and residual coal pillars roughly grasp further basis to select a small number of top delamination area or entity roof coal site integrity cut excavation, to avoid the impact of the top of the delamination area's special situation, with the necessary supporting measures to complete the installation of the bracket. 4.2 Other works The structure of forward should be obtained when excavating, for there have damage area in upper layer, and because of the water in goaf, detection and release of water should also be noticed.
So auxiliary work are divided into 3 parts: physics exploration, water surveying, air leakage prevention.

The instant ready-to-eat oyster was prepared through hot water cooking, seasoned, dried, vacuum packed and sterilized.
Materials and methods Materials Oysters: bought in Taizhou city, Zhejiang province, aquatic product market Other ingrdients: soy sauce, vinegar, sugar, rice wine, ginger Equipments Induction cooker, hot air dryer, water activity plan, vacuum packaging machine, high pressure sterilization pot Main technological steps[3,8] (1) Raw material pretreatment: The flowing clean water was used to wash the fresh oyster meat in order to get rid of the sediment and broken shells as well as other impurities in the oyster meat
(2) Blanching treatment: The oyster meat was cooked in boiling water, added 3-5% of the salt and a moderate amount of ginger, it was ok when the oyster meat floated up
Sterilization The product was sterilized in the boiling water of 100˚C for 30 minutes.
Product evaluation method[9] The evaluation panel composed of five professional team was chosen to overall assessment the taste and color, aroma and odor of the product to conduct a comprehensive evaluation, the evaluation results were divided into four levels: poor, common, better, best, or with 1, 2, 3, 4 respectively ratings said.

Table 1 Calculating parameters of soil layer Advantage Disadvantage Beijing The comprehensive economic strength Talent resources Science and technology innovation ability Urban function Scale of industrial agglomeration International communication skills Natural resources Land price Urban expansion space Coastal locations Water resources shortage Tianjin Coastal region The traditional industrial base Open door policy Natural resources Urban expansion space Regional markets vacancy Water resources shortage Langfang resources Location conditions land Spatial and land price Price of labor force The comprehensive economic strength Urban agglomeration Industrial base The level of technology development High-tech talent Water resources shortage Market integration strategy Achieve market sharing is the key to promote integration,and also is the difficult point.
In the help and support of higher authorities in the future, Langfang should enhance communication with Beijing, Tianjin, further integration of the three ground-water, electricity, gas, telecommunications, tourism and other software services, run remote settlement, off-site ticketing, remote business of shipping, remote paying even remote card, so as to achieve maximum integration services resources and mutual win-win.
Professional Time and Space [J]. 2009, 8 In Chinese [2] Jianlin Song.

Experimental The Old Corrugated Containers (OCC) fibres used in our study from a local professional paper-making factory were cut into flakes.
Deionized water was used in all solutions for fiber treatment.
OCC fibres were firstly chipped into flakes (2cm×2cm) and then soaked in deionized water for 24 h.
After each lay-by-layer assembly process, the treated OCC fibres were intermediately washed with water at room temperature to remove excess polyelectrolyte.
After the layer-by-layer self-assembly treatment, tiny fibres were covered with polyelectrolytes, preventing pulp from swelling because of water adsorption to some extent.

The foam has often the expansion factor even 1:50, i. e. from 1 mm thick coating the insulating foam 50 mm in thickness is formed. [3] Measurement of heat flux by radiation panel This instrument was constructed for experimental tests on the basis of experience gained from numerous professional consultations and comparison of existing methods with the aim to determine the initiation of material ignition in dependence of the heat flux rate.
Regulation options for radiator power were as follows: 5 kW, 10 kW a 15 kW, depending on the number of connected spirals. [5] Experimental tests were performed by use of heat flux sensor type SBG01-100, (Fig. 1), which was water cooled.
WL. was used as fire protection, This concerns a white water-soluble coating mass, based on acrylate, containing 60 % of solid matters, forming an insulating foam on the protected surface at fire.
The coating is used for protection of wooden and metallic structures, for protection of electric cables in interior of buildings, without direct acting of climatic effects and/or water. [6] Results of measurements and discussion Principle of experimental measurement consisted in inflammability test of cable specimen surface exposed to a radiating heat flux.
SBG01 manual version 1004: Water cooled heat flux sensor according to Schmidt-Boelter, 2008 [cit. 2011-01-02].

Due to the water temperature being lower, the dissipated heat is less than absorbed heat, letting the cooling water temperature to gradually increase, as shown in Fig.2 The water-inside pore of the engine The section inside the heat sinks Q1 Q2 G G Fig. 2 Cooling heating system simplifications Note: Q1 is the heat of the engine transmitted to the cooling system; Q2 is the dissipated heat; G is the flow of cooling water.
The formula is shown for the incoming cooling water heat.
The permissible temperature is equal to the water temperature t1 plus t2, and the water temperature increment dt, namely: t2=t1+dt (5) dt can be calculated based on the heat transferred to water and the water current, dt=Qc/(c·ρ·g) (6) Where c is the specific heat, of which the specific heat of water is 4.187; g for coolant flow; ρis the density of water, approximated 1000kg / m3.
The result is: 4min of heating water temperature when the engine water temperature is 25˚C; 5min when the engine water is temperature 40˚C.
References [1] Jia Dapeng: Warmers research Ignition Technology ( Ordnance Society of Professional Committee of tanks and armored vehicles Proceedings, China 2008)

Fuel cell stack is cooled with water cooling method and cooling water becomes hot water with temperature of 60 to 70℃ after bring waste heat from stack away.
Then the cooling water exchanges heat with supplying water in heat exchanger.
One method is with low-pressure water and cooling is realized by the water’s evaporations.
Small water flow is needed in this method and waste heat is taken away mainly by water vapor.
With very little professional maintenance personnel, when there are failures with fuel cells, usually fuel cells are transported back to the production base for maintenance.

When sensor 2 (5) signals to move the empty bottles to the pump position (6), water is poured into the bottles.
The water bottle is still being moved along the conveyor belt to the labeling location (16).
Sensor 5 (14) will be used to test the water bottle.
It includes water automatic filling part, bottle capping part and labeling part.
This rate is higher than that of industrial machines currently used in professional factories (beer, soft drinks), but it is acceptable for small-scale production and a small market.