Search results

This article presents the procedure followed for the selection of the experiments and their reproduction on a 3D printed enclosure designed to protect a high-precision electronic data collection system.
Material A B C Initial thickness [mm] 2,14 2 1,96 Force applied to obtain a reduction in thickness of the 50% [N] 867 544 1080 Apparent surface of joints in top view [mm2] 180,4 180,4 180,4 Strain to reduce thickness to 50% [MPa] 4,8 3,0 6,0 Final Thickness [mm] 2,13 1,97 1,93 Reduction [%] 0,47 1,5 1,53 Conclusions This document includes the basic specifications for conducting a test plan in electrical or electronic system enclosures located outdoors.

According to the available data, Aerobic denitrifying bacteria have been found in such genus as Alcali-genes, Paracoccus, Pseudoonas and Rhodococcus [2-6].
It was confirmed that denitrification enzyme system and cellular respiratory chain worked at the same time in aerobic denitrifying bacteria, transporting electron to NO3 – and O2 respectively for reduction reaction[7].
Tseng, Nitrate reduction by Citrobacter diversus under aerobic environment, Applied and Environmental Microbiology. 55(2001):90-94

For all nanostructured samples containing Fe, a significant reduction of the activation energy is observed, with Ea spanning the 120-130 kJ mol H -1 range.
With the present data it is not possible to attribute the reduction of Ea to some specific microscopic mechanism.

However, as with the profiles depicted in Fig. 2, the effect of these differences in temperature, either as a result of different conduction rates or different traverse speeds, manifests itself in a reduction of the trough in the 'M' and 'V' residual stress distribution across the weld.
In Fig. 5a, peak residual stress profiles at the edge of the weld indicate a decrease in stress level for the retreating side of the weld that is balanced by an almost equal increase in stress on the advancing side, suggesting that for asymmetric welds, the reduction in stress level is more effective on the retreating side.
Conclusions The residual stress models developed have shown reasonable agreement with published data [3] and a calibration sample measured by neutron diffraction [4].

For some powder batches heat treatment and reduction were performed simultaneously in hydrogen containing atmosphere.
The x-ray diffraction very clearly revealed the phase changes of the powder during calcination, heat treatment and reduction.
X-ray diffraction data for starting powder and n- Al2O3 and Al2O3 - 5% Ni coatings obtained using different spraying parameters (I-III).

However, the compressive strength of resin capsules would be reduced along with size reduction of packing
Fig.1 Layout of roadway bolting support The analysis of underground monitoring data.
The latest development of oxidation-reduction initiator system used for UP resin, Thermosetting Resin(in Chinese), 16(2001), No.3,p.34

The main advantages of the high shear device include significantly enhanced kinetics for chemical reactions or phase transformations, uniform dispersion, distribution and size reduction of solid particles and gas bubbles, improved homogenisation of chemical composition and temperature fields and also forced wetting of usually difficult-to-wet solid particles in the liquid metal.
Increasing the shearing speed to 6500rpm at P2 (Fig.2c), results in further reduction of the sump depth and significant refinement of the grain structure through out the diameter of the billet.
Temperature data obtained from thermocouples located at different positions within the DC casting mould during casting of A6063 alloy; (a) DC casting, and (b) MC-DC casting with low and high shearing speed. 40mm 40mm Fig. 5.

High concentration of such microdefects, even if there are no pronounced structural defects, can lead to significant reduction of the strength of the material.
Calculation of elastic moduli is based on since the presence of air voids does not affect the shear stiffness of the sample; reduction in due to scattering of shear waves by pores is not taken into account.
The experimental data shown in Fig. 4 can be approximated by the formula [13]: , (11) where A = -84.5´103 m/s; B = 2810 m/s; = 2770 m/s.

Altiparmak et al. reported that CO, smoke, HC and PM emissions experienced a reduction trend with biodiesel and blends of biodiesel–diesel fuels compared to mineral diesel fuel operation [9].
All the data were interfaced with computer using software.
This may be explained due to diethyl ether blended with B20 produces a cooling effect in the combustion chamber leading to reduction of NO emission.

The XRD data were collected using a Siemens D5000 X-ray diffractometer (CuKα radiation), the SEM studies were performed using JEOL JSM 6400 (15eV).
It is noteworthy that, there was a substantial reduction in the XRD peaks of CuAl2 phase indicating a good reaction evolution to produce bayerite and hydrogen.
In addition, XRD analysis of the present samples indicates that as far as the milling time increased the proportion of bayerite phase increases, which suggests a favorable effect with crystal size reduction.