Search results

The analysis shows that in the final analysis the reduction of the mechanical properties of mudstone is due to structural damage, stress weakening and energy weakening.
The experimental data is discrete, test results are often lack of conformity to truth. (6) Because of construction disturbance the shear strength of mudstone by testing is less than theoretic value.
And also use the test data to restore mudstone’s original structure and stress condition due to the damage during boring, to recover its true engineering properties.

On analyzing the SF EXPRESS carbon emission way, the total carbon discharge and the emission reduction way on the low carbon economy development model, this paper finds the logistics enterprises a development model and points out its direction with a sort of technical methods such as technical and economic analysis and statistical analysis etc.
This is because the logistics industry itself is one of the main industry of energy consumption and carbon emissions, according to the data from International Meteorological Organization , transportation accounts for 26% of the world's energy consumption in the 2005, what is more ,transportation accounts for 14% of the world's carbon dioxide emissions in 2002.The logistics industry of China's energy consumption and carbon emissions is more outstanding, therefore, the low carbon type development of China's logistics industry is serious and faces more challenges .In the face of such challenges, as domestic private express delivery giants, SF express needs to make corresponding change. it can allocate resource efficiently by optimizing the network reasonably.
Through settling the material of the Third logistics Design Competition Case, combining actual survey data calculation, this paper receives the carbon emissions in each life cycle link, finding out the largest carbon emissions as part of the division transiting.

The reduction of weld metal’s ductility was due to too high cooling rate and excessive hardening of weld metal in relation to base metal.
Available literature data [2, 3] suggest that cracking of T24 weld joints results from several factors, including presence of welding defects with acceptable dimensions (e.g. inadequate joint penetration), wide brittleness temperature range (BTR) which promotes hot cracking, strengthening of weld metal due to martensite transformation and secondary hardness effect, excessive weld deformation and hydrogen content, which was reported to be one of the crucial factors influencing both hot and cold cracking susceptibility of 7CrMoVTiB10-10 weld joints.

Through device electrical characterization and material analysis, we show that the performance enhancement is due to the reduction of interface defects and trapped charges in the SiO2 surface layer after the POA treatment, which in turn, significantly suppresses the threshold voltage instability.
Next, capacitance-voltage (C-V) data were acquired under forward and reverse gate bias sweeps to investigate the effect of POA on the SiC/SiO2 interface (Fig. 3(c)).

Figure 1 shows example outputs of the model compared with the available data.
Predictions for discontinuous precipitation were also compared with data available in the literature.
Figure 1(b) shows the predicted number density and growth velocity compared against data for Mg-- Al binary alloys from [12, 13] for conditions where discontinuous precipitation dominates.
(a) Continuous precipitation only, particle length and number density for AZ91 aged at 200�C (data from [1]).
(b) Discontinuous precipitation only nucleation rate and growth velocity respectively (data from [12, 13]).

According to the data published by Electric Power Research Institute (EPRI), USA global data centres cloud power market is expanding at over 10% annually to reach 200 billion kilowatt-hour energy consumption by 2020.
Powering IT equipments is one of the largest operating expenses for these data centres.
According to the data published by the Electric Power Research Institute (EPRI), the USA global data centre power market is exploding at over 10% annually to an estimation of 200 billion kilowatt hours by 2020 [3].
Figure 3 depicts the growth of energy consumption in US data centres with predictions for 2020 based on EPRI data.
To minimise energy losses in certain stages of server power supply architecture, Google has introduced their new 48 V point of load Rack Power Architecture which enables the reduction of power⠀愀⤀ ⠀戀⤀ Fig. 1: Trend data of the computer (a)Increasing trend of component count inside the computer (b) Energy utilization inside the computer [1] Fig. 2: Evaluation of energy efficiency in 80+ group power supplies [2] Fig. 3: Power consumption trend of the USA data centres with estimation for year 2020 [4] distribution loss by 16 times and the loss of power conversion up to 30%.

The results show that the performance of evaporator can be improved by inserting a bayonet tube into the liquid channel, including better averaging function of temperature, reduction in the peak temperature on the inner surface of capillary porous wick, and better adaptability in working environment.
In order to verify the reliability of the model, an evaporator using ammonia as working fluid was calculated owing to the absence of experimental data for the high temperature alkali metal operation.
The results show that the performance of evaporator can be improved by inserting a bayonet tube into the liquid channel, including better averaging function of temperature, reduction in the peak temperature on the inner surface of capillary porous wick.

Al and Cr had no clear effect on hardness and compression strength, with no clear trend on improvement or reduction in mechanical properties.
In both experiments, there is no clear trend on improvement or reduction in mechanical properties.
Data Brief. 2018;21(8):2664-78

(1) The contact angles measurements of MDF cement specimens were performed by using an OCA-20 Contact Angle System (Data Physics Instruments).
Water or glycerol drops were placed at three different points of one specimen, and the average values of measured contact angles have been used for data interpretation.
AFM data were collected in semi contact mode using a silicone cantilever (CSG 10, force constant 0.15 N/m, tip radius 10 nm).
The reduction in dry strength was slight (maximum 12%) up to 2% epoxy edition, however, further increasing epoxy content, decreasing the strength, and the maximum strength drop (44%) belongs to Mixture B10.
On the other hand, the least strength loss for 28-d water-stored MDF cements belongs to BA1, which is 19% reduction with respect to its dry strength.

Meanwhile, the extensive use of internal combustion engines has given rise to serious environmental pollution, so it is of essential importance to study energy conservation and emission reduction.
NOX emission data with the change of post injection timing are shown in Fig. 4.
Similarly, for post injection quantities of 0mm3/st, 2mm3/st and 8mm3/st at high engine load of 991Nm, the data are 0.75g/(kW∙h), 0.92g/(kW∙h) and 0.78g/(kW∙h).
Fig. 8 reveals the NOX emission data for the five different post injection quantities in four working conditions.
At a certain and identical post injection timing, THC emissions witness a valley point for the post injection quantity of 2mm3/st at the medium engine loads while THC emissions increase at 247Nm and remain unchanged at 991Nm; CO emissions follow a trend that they initially increase and then reduce; NOX emissions keep steady except a clear reduction at 247Nm; PM emissions demonstrate a trend of a general increase; PN has the similar changing trend with PM emissions.