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Extend the water-saving technique and keep the trend of the overuse of water resources within limits. 4) Practice of the regulation of water and reduction of sediment.
According to the research of high efficient sediment transport, the four practices of regulation of water and reduction of sediment produced the general scour in the lower reach, which reduced the water level in the same discharge and increased the bankful-discharge considerably after the construction of Xiaolangdi Reservoir.
The bankful-discharge in the two main channel blocks increased from the1800m3/s before the regulation and reduction to 2900m3/s, which improved the flood preventing capability notably. 5)Strengthen the mechanism research.
Based on the field water-sand data of 1995~2000 in the Lower Yellow River, the sediment- carrying water volume and efficient sediment- carrying water volume in different term can be calculated to analyze the relation between the efficient sediment-carrying water volume and discharge, sediment concentration, etc., so as to the material water-sand combination for transporting the sediment efficiently. 6)Assistant engineering.

But in the actual operation environment, the sound sources of control system and nonlinear factors of pathways often lead the distortion of secondary acoustic signal which is driven by secondary sound source and ultimately affect the noise reduction effect of the control system.
Fig. 1 The principle diagram of noise elimination of active noise control To understand from the perspective of principle of interference of sound waves, we can find in a point in space to silencing in the true sense, we must insure that any frequency sound waves produced by the primary and secondary sound source have the equal amplitude and opposite phase, this condition’s met time is the duration of the noise reduction.
Secondary channel of nonlinear modeling Pointed out in literature [6], because in active noise control system, silencing signal from the secondary sound source to the error of the sensor in the secondary path will also exist in the transmission of nonlinear problem, so nonlinear active noise control system can be divided into linear secondary pathways and nonlinear secondary pathways two cases, and different noise reduction measures according to different situation.
Active noise control by using prediction of time series data with a neural network[C]. in Proc.

It can be seen that the general instability response of the nanotube is followed by a sudden reduction in the axial load that can be supported by the structure.
It is worth noting that altering the length of the nanotube results in a 38% reduction in the axial compressive load-bearing capacity of the nanotube.
It has been demonstrated that the developed results are in a very good agreement with available data in the literature.
For example, changing the length of a nanotube from 6.2 nm to 23.3 nm results in a 38% reduction in the load-bearing capacity of the nanotube.

The relationship investigated in the present study considered the data points obtained from the time-strain curve shown in Fig. 1.
After a 500 hour test, a filamentary carbides reduction and M 7C3 presence is observed (Fig. 4B).
Microstructure Stage Creep life fraction Ferrite matrix and pearlitic structure with elongated M3C and filamentary carbides A Interval: 0 h ® 500 h Life fraction t/tr: 0 ~ 0,15 Rupture time tr » 3210 h Carbide coarsening within plus the grains and filamentary carbides B interval: 500 h ® 1000 h life fraction t/tr: 0,15 ~ 0,31 Sphreroidisation is predominant and increasing of carbide filamentary C Interval: 1000 h ® 1500 h Life fraction t/tr: 0,31 ~ 0,47 precipitate-free zones formation, filamentary carbides reduction D Interval 1500 h ® 2000 h Life fraction t/tr: 0,47 ~ 0,62 clusters formation and filamentary carbides reduction E Interval: 2000 h ® 3000 h Life fraction t/tr: 0,62 ~ 0,93 Sphreroidisation is predominant and M6C is the predominant carbide, pearlitic structure degeneration F Interval: 3000 h ® 3217 h (Rupture) Life fraction t/tr: 0,93 ~ 1,00 Figure 4.

Calculation and prediction of noise levels For development of a successful model for noise management, assessment of the state of the noise level, and appropriate measures and methods for noise reduction, it is necessary to have as accurate information on the characteristics of the noise as it is possible.
These data are obtained by measurements of characteristic values ​​of noise in the frequency, amplitude and time domain.
Prediction of noise levels on the endangered location gives the opportunity to select barriers of various dimensions in order to achieve the required level of noise reduction.
The described technical solution meets the criteria regarding the level of noise in the environment, providing the required to reduction of the level of noise of hydraulic power unit of the press for bundling of waste sheets and old cars.

The data shows that when ε0 is 0.50, fly ash with D50 12.0μm can increase the packing density of the composite powder only to a small extent, while ε0 is 0.53, fly ash with D50 12.0μm can’t increase the packing density of the composite powder.
When the content of fly ash with D50 1.0μm is between 15%~40%, with increasing fly ash, 3d and 7d compressive strength of cement paste has a significant reduction, but 28d compressive strength isn’t less than 105MPa and has a smaller reduction.
When the content of fly ash is between 10%~40%, 3d compressive strength has a significant reduction with fly ash increasing, but 7d and 28d compressive strength show substantial increase, and 28d compressive strength is higher than the 28d compressive strength of fly ash with D50 1.0μm composite cement paste.

Introduction Environmental concern in automotive manufacturing introduces the enthusiastic of vehicle-weight reduction.
Throughout the forming process, the blank is prone to experiences with thickening in the flange region and significant thickness reduction in the cup region due to the radial tensile stress, as shown in Fig. 2.
A Common behavior for all available results in Fig. 8 was the peak of minimum thickness data in each different initial size of blank and after those pressure, the increasing of pressure, the thinning problem was increase.
The reductions were occasionally able to reduce the thinning problem.

Mechanistic study on adsorption and oxidation of NO over activated carbon Bing Li1, 3, a, Jianming Xue1, Chunyuan Ma2, Jianmin Chen3 1GuoDian Science and Technology Research Institute, No.10, Pudong Road, Nanjing 210031, Jiangsu Province, China 2National Engineering Laboratory for Coal-fired Pollutants Emission Reduction, Shandong University, No.17923, Jingshi Road, Jinan 250061, Shandong Province, China 3School of Environmental Science and Engineering, Shandong University, No.27, Shanda South Road, Jinan 250100, Shandong Province, China a13869187893@163.com Keywords: activated carbon, NO, adsorption and oxidation, mechanism.
There are two types of measures to reduce NOx emissions for coal-fired plants, one is NOx reduction in the course of combustion and the other is post-combustion flue gas denitrification, while flue gas denitrification technology can be divided into dry and wet [1,2].
The selective catalytic reduction (SCR) technology is relatively mature, and widely used in the word, but which requires NH3 as a reducing agent, and can cause the escape of NH3 into the atmosphere [3].
Data acquisition device Fig. 1 Schematic diagram of the experimental system All experiments are conducted with a gas flow of 600 ml/min (at 1 bar, 298 K).

These data correspond to other research results of the diesel engine combustion chambers [3, 4, 11-16] and elements of gas turbine plants [2, 17-18, 23].
Volumetric heating will ensure a reduction of the subsurface temperature gradient and increase the thermal strength of the ceramic coating.
In comparison with the irradiated opaque superficial ceramic layer a reduction of the frontal temperature to ~ 20K at the peak of the heating for the initial cycles of the piston movement and to ~ 50-80K in a stationary mode was obtained.
Gutierrez, Reduction of Heat Losses and Thermal Stress of Diesels using Semitransparent Ceramic Coatings, Extended abstr. of PhD dissertation (Specialty “Heat-Engine”), Moscow State Technical University “MAMI”, Moscow, (2007)

The reduction of water and methanol crossover can be achieved by means of reducing the diffusion flux from the anode to the cathode or enhancing the back convection of the water from the cathode to the anode.
Similarly, the rate of oxygen reduction reaction (ORR), which takes place on the cathode, is governed by: (13) The cell current is measured by the protons and electrons produced by the MOR in the ACL: (14) To account for the effect of methanol crossover, a parasitic current density is calculated as: (15) The current density generated by the ORR is: (16) It is assumed that both the cell current and the parasitic current are entirely consumed by ORR: (17) Finally, the cell voltage can be determined as: (18) Where, and denote the thermodynamic equilibrium voltage, the contact resistance and the proton conductivity of the PEM, respectively.
viscosity(kg/m·s) 4.05×10-4 [7] Gas dynamic viscosity(kg/m·s) 2.03×10-5 [7] Methanol diffusion coefficient (m2/s) 1.58×10−9e0.02623(T-298) [7] Diffusion coefficient of methanol in Nafion (m2/s) 4.9×10−10e2436(1/333−1/T) [7] Diffusion coefficient of H2O in Nafion (m2/s) e-2436/T [7] Equivalent molar mass of Nafion (kg/mol) 1.1 [13] Density of dry Nafion (kg/m3) 1980 [13] O2 diffusion coefficient (m2/s) 1.775×10-5(T/273)1.823 [7] Electrical conductivity of electronic conductor (S/m) 4000 [14] Electrical conductivity of PEM(S/m) 7.3e1268(1/298-1/T)× [7] Proton conductivity of catalyst layer(S/m) 0.14 [14] Anode reference current density (A/m3) 105 [7] Cathode reference current density(A/m3) 1.14×103 [7] Reference methanol concentration (mol/m3) 100 [7] Reference O2 concentration(mol/m3) 0.52 [7] Transfer coefficient of Anode catalyst layer 0.3 [7] Transfer coefficient of cathode catalyst layer 0.8 [7] Methanol oxidation reaction equilibrium Potential (V) -1×(131350-408.22×T)/6/F [7] Oxygen reduction
Picture of the assembled µDMFC The Data from Fig. 6 depicts the cell performances with different current collectors and different methanol concentration.