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For reducing interior vehicle noise below pantograph, noise reduction measures should be effective at 100Hz-2kHz.
The system consists of microphones, signal conditioner, data acquisition cards and computers.
The data acquisition card has 32 ​​channels, each channel has a separate A/D converter chip, and a trigger card provides clock signal for all channel, which is used as conversion clock for each A/D acquisition channel, and ensure each acquisition channel to acquire data synchronously.
The system can guarantee that noise data from monitoring points can be acquired synchronously at the same conditions, so the mutual relations and distribution rule of noises can be reflected accurately.
In order to reduce the error caused by random factors, the average value of multiple measured data was applied.

The associated electrochemical data were presented in Table 3.
The associated electrochemical data were presented in Table 4.
The reduction of MoO42- into Mo (IV) is responsible for the formation of MoO2 in the barrier films.
From the electrochemical data presented in Table 3 and 4, it can be inferred that the corrosion rate of both the samples is lower than their counterparts in blank corrosive media.
Potentiodynamic polarization curves of and weld with the addition of different concentrations of sodium molybdate The inhibition efficiency was calculated by eq 3, all data were listed in Table 3

The EBSD measurement was carried out using a program TSL OIM Data Collection ver.3.5 in Phillips XL30s SEM with FE-gun operated at 20kV in order to investigate microstructural evolution through thickness of the samples with proceeding of the ARB.
This is due to 50% reduction in thickness by the rolling.
Figure 3 shows the ND&RD color maps and GB maps constructed from the EBSD data for the samples processed by ARB of 5cycles and 8cycles.
Fig. 2 EBSD ND & RD color maps and grain boundary maps constructed from the EBSD data for the samples processed by ARB of 1cycle(a) and 3cycles(b).
Fig. 3 EBSD ND & RD color maps and grain boundary maps constructed from the EBSD data for the samples processed by ARB of 5cycle(a) and 8cycles(b).

In this model input data come directly from rheological experiments or are derived from other measurements through physical relationships.
The central film thickness which separates the contacting surfaces is given by the isothermal EHL formulas of Hamrock-Dowson [5]. )61.01( 69.2 73.0 067.053.067.0 K c e WGUH − − − = (1) The isothermal EHL film thickness is corrected by a thermal reduction factor Tφ proposed by Hsu and Lee [6] to account for the fluid heating in the inlet region. 1875.0527.0447.0687.0 ) 0766.01( − ⋅+= S T eLWG φ (2) Where Gand Ware the material parameter and the load parameter, respectively.
This is the results of lubricant's non-Newtonian property and the reduction of lubricant viscosity for friction heat.

An estimated global research and development investment of nearly $9 billion per year is anticipated to lead to new medical treatments and tools; more efficient energy production, storage and transmission; better access to clean water; more effective pollution reduction and prevention; and stronger, lighter materials.
Integrated nanosensors are used for collecting, processing and communicating massive amounts of data with minimal size, weight, and power consumption Magnetic random access memory (MRAM) enabled by nanometer‐scale magnetic tunnel junctions that can quickly and effectively save even encrypted data during a system shutdown or crash, enable resume‐play features, and gather vehicle accident data [6].
Nanosciene can contribute to the further reduction of combustion engine pollutants by nanoporous filters, which can clean the exhaust mechanically, by catalytic converters based on nanoscale noble metal particles or by catalytic coatings on cylinder walls and catalytic nanoparticles as additive for fuels.
A reduction of energy consumption can be reached by better insulation systems, by the use of more efficient lighting or combustion systems, and by use of lighter and stronger materials in the transportation sector.
Nanotechnological approaches like LEDs (Light-emitting diodes) or QCAs (Quantum Caged Atoms) could lead to a strong reduction of energy consumption for illumination [1-2]. 2.4.

. - Positioning data about materials visibly and preferably directly on the product.* - Providing information to the user about the correct disposal of the product.* - Identifying materials according to ISO14021:1999.* - Providing additional information such as number of recycling made ​​or additives used in the composition of the materials.
The changes made in the new design allowed the reduction of 77.5% of consumption of polyethylene in packaging for ampoule in respect of products evaluated and a reduction of 20% of the paper used and 25% of the volume of the external packaging.
These benefits can be further extended to reduce consumption of transportation, especially to the ampoule that is flat and thin when empty, providing a significant reduction in logistics costs, since the distribution among manufacturing companies, to collect the material after disposal.
This reduction in consumption still allowing the material produced ceases to be reprocessed for reuse, ensuring the maintenance of its physical and mechanical properties for the manufacture of other products requiring raw material of better quality.
Table 2 shows data from the evaluated packages and the new packaging developed.

In accordance with statistical data, it is assured that finally that hot water system designs that water-usage number is 504, and hot water consumption norm is 60L/people.
Emission reduction of carbon dioxide According to the formula[4]: ＱＣＯ2=（∆Ｑｓａｖ×n）×（W×Eff）×FＣＯ2×44/12 (2) In the formula (2),ＱＣＯ2 is carbon dioxide emission reductions / kg,W is standard coal calorific value / MJ / kg, n is compute cycles / year,FＣＯ2 is carbon emission factor of the auxiliary energy / kg carbon / kg of standard coal.The emission reduction of carbon dioxide of every househood per year which can be calculated:ＱＣＯ2=417.5kg.
There are totally 224 families on 3# floor of the 28th floor Heron habitat garden in Panzhihua area, whose total carbon dioxide emission reduction per year is nearly 93.5 tons.
Conclusions (1) Based on questionnarie on hot water usage of residents in planned district, average daily heat water usage amount statistical data of three kinds of working conditions of winter, spring and fall and summer can be obtained, which provides relative accurate reference basis for solar hot water system of high-rise buildings
(4) Economy profit and later benefit of energy conservation and emission reduction produced by the system application

Introduction From the analysis of literature data it follows that preparation of contact surfaces before cold cladding is one of the most important technological operations.
The relative reduction during cladding affects the bonding strength of bimetal layers, the nature of the microstructure, the size of the recrystallized grains, the mechanical properties of the strip, the dimensional accuracy [4].
From the processing of experimental data, the following regression equation was obtained with an error of not more than 3.5%: εc=0,580-0,0308T0-0,0628HpH
It is established that the degree of reduction during cladding, providing a reliable connection of steel and brass, is reduced to 45…50% [2].
Savin, Calculation of the Amount of the Reduction Required for the Formation of Compound Layers during Cold Rolling of Bimetals, Materials Science Forum, 870 (2016) 328-333.

From these data, information representative of an alloy matrix unattached by corrosion, can be extracted.
This indicates that, for the etched alloy, no activation of the cathodic sites for oxygen reduction is necessary, since the etching treatment has already provided available sites.
Therefore, a reduction of cathodic activity on one specimen results in a decrease in potential, since the anodic activity is not affected by the de-aeration.
Subsequently, a temporary current increase is observed, due to the anodic activation promoted by the pH reduction following chromic acid addition.
This layer provides a relatively efficient cathode for the reaction of oxygen reduction, but is not particularly effective for hydrogen evolution.

The IMO’s discussions focus on the technical, operational and market-based measures for ship’s CO2 emission reduction.
Operational measures: These measures include reduction of ship speed, optimization of ship routes by meteorological navigation and good maintenance of ship structure and critical equipment so as to improve operational efficiency and achieve CO2 emissions reduction.
Ship Resistance Reduction Technologies The UK successfully developed new paint for ships.
The wireless communication network system can transmit the detected data to the onshore office when the ship is sailing in China.
Facing more and more stringent standards for ship CO2 emission reduction, China must make a breakthrough and achieve actual effect in the low-carbon ship technology, in order to achieve China’s commitment to emission reduction targets and win Chin’s voice on ship CO2 emission reduction standards.