Search results

Such corrosive media appear as a result of active sulfate reduction [1].
In sea water, pitting corrosion would develop under the influence of SRB; active sulfate reduction leads to significant hydrogen absorption by steel.
Eh defines sulfate reduction rate.
Data obtained for steel St3 corroded at OC concentration of 5 mMol×dm–3, are presented on Fig. 3.
Table 1 contains experimentally measured efficiencies of OС action inhibiting corrosion of steel St3 that have been determined gravimetrically on the basis of measurements performed at corrosion media with SRB, as well as the data on OC efficiencies of inhibiting hydrogen absorption by steel.

The IR transmittance of rGO appeared to be relatively flat, indicating disappearance of functional groups after the chemical reduction with L-AA.
However, it was observed that the error bar of the sensing response at pH 3 was exceptionally high, which requires further investigation with more sensors and sensing data.
The data were interpreted from two identical sensors.
Conclusion The rGO was successfully synthesized by a modified Hummers method, followed by chemical reduction with L-AA.
Guo, Reduction of graphene oxide via L-ascorbic acid, Chemical Communications, 46(2010) 1112-4

FFA reduction (X) was calculated according to the initial and remaining free fatty acid concentration difference.
The data can be considered valid if the determination coefficient value is close to 1.0 [8].
Fig. 2 Shows the correlation between the experimental and predicted value from the mathematical model of FFA reduction.
Thus, the kinetic model can well predict the reduction of free fatty acids.
Validation data shows that the kinetic equation model can be accepted for calculating free fatty acid esterification of SPO kinetic with a determination coefficient of 0.9612.

For instance, chassis exclusively made of aluminum sheet metals provide weight reductions for a mid-class car body of 200 to 300 kg [1].
The experimental analysis was carried out to obtain the material behavior using different numbers of cycles, and to validate the numerical results in comparison with the data measured during the experimental tests (such as the pressure on the lateral arms of the roll and velocity of the roll themselves).
The entry thickness (hin) and the width (win), the exit thickness (hout) and the width (wout), the reduction per cycle and the measured separating forces, on the two sides of the roll, are given in this table.
Once the material behavior was inserted into the code, in order to compare the numerical model with the real case, the machine output data and the results of the numerical model were compared.
Furthermore, the 2D model can be used also to predict other tool parameters, such as the maximum reduction to be applied or the maximum pressure on the roll or even the rolling velocity.

Based on proposing the basic evaluation index of the thermal performance, the study analyzed the effect of outdoor temperature and wind speed on the heat recovery efficiency and the reduction of fresh air load.
This study measured the performance of plate fresh/exhaust sensible heat recovery system during winter and summer operation period, and chose stable test data to make sure the reliability of analysis data.
But the effect is limited under humid climate conditions and the reduction of fresh air load is even less than 10%.

The results show that contamination of biodiesel/diesel blends in soil induced a reduction growth of P. putida.
Based on ‘Eurostat’ data there were 484.8 million tons of oil products used in the European Union (EU) in 2003, which was by 2% higher than in 2002 [2].
The presence of B5 biodiesel/diesel blends into soil was induced a reduction in growth of P. putida started at Day 9.
Sample Bioremediation period (Day); P. putida growth (CFU/ml) (n=3) 0 3 6 9 12 15 18 21 24 B5 1.2x107 2.6x107 4.4x107 5.0x107 3.2x107 2.4x107 1.2x107 5.0x106 5.0x106 Control 4.5x107 5.1x107 5.9x107 6.5x107 5.5x107 4.1x107 2.3x107 1.5x107 1.0x107 Conclusion Based on the obtained data it is concluded that the contamination of soil with biodiesel/diesel blends influenced the survival of P. putida.

These discontinuities contribute to drastic reduction of mechanical properties.
In these last, there is a chance for another approach to the material data and to factor of safety, to allow for the occurring structure discontinuities.
The ASTM Standard E399 describes the specimen geometry, experimental methodology, data acquisition and test techniques to determine KIc values.
By applying LEFM concepts to a-N data we can obtain crack growth rate, da/dN, versus the applied stress intensity factor range, ΔK.
The value is usually from 1.5 to 2 but constructors usually overestimate its value what influences the reduction of the allowable stresses and an increase of castings weight.

For slow strain rate tensile (SSRT) test in hydrogen gas, the degradation in relative reduction in area (RRA) of 300-series austenitic stainless steels is mainly attributed to hydrogen-assisted surface crack growth (HASCG) accompanied by quasi-cleavages.
Introduction There exist several criteria based on reduction in area (RA) and relative RA (RRA) for authorizing metals for use in high-pressure hydrogen gas [1–5]; however, the physical meaning of the criteria is not clear.
The relative FCG rate was increased with a reduction in f.
The JIC test was also regarded as the 1-cycle FCG test at R = 0, plotted as the da/dN-ΔK data (○ and ●).
In hydrogen gas, the da/dN-ΔK data obtained from the JIC test existed on the same line as the upper da/dN-ΔK curve in the FCG test, different from the da/dN-ΔK data in air.

Original 3D CAD data of desired model are sliced in dedicated software into layers of a specific thickness.
Last step in data preparation was slicing the resulting models into layers 50 μm thick in the AutoFAB software.
After the data were prepared, the job was submitted to SLM 280HL machine.
According to the freely available data which concerns AlSi12 material [4], its standard mechanical properties are as following: E = 72 000 to 75000 MPa, Rm = 150 to 230 MPa and εmax = 5 to 12%.
The data obtained in this article corresponds to more hardened structure which is a consequence of SLM method.

Data reduction, background description and the final structural refinement were carried out with TOPAS 4.2 and its program package.
The refinement was performed within the space group Im3 (R-Bragg 4.182) yielding the crystal structure data collected in Table 1.
The dashed and dotted line is a CW fit to the data in the temperature range 200-300 K and 2.5-6 K, respectively.
The lower insert displays a close-up of the lowtemperature data with the magnetic transition temperature Tmag and the temperature T0 at which correlations between the 4f moments set in.
The solid line is a linear fit to the data below 0.1 K emphasizing the non-Fermi liquid behaviour ∆ρ = AT with A = 2.77 µΩcmK−1.approximately 5% with respect to the value −2.05 obtained for Ce4Pt12Sn25.