Search Options

Sort by:

Publication Type:

Open access:

Publication Date:

Periodicals:

Search results

Online since: June 2014
Authors: Syed Baharom Syed Osman, Farhan Iqbal
There were significant  increase in the shear strength and reduction of moisture content which could be an early indication that sludge which predominantly contains ferric oxide could be strengthen by means of electroosmotic stabilization.
Simultaneously, logging of the vertical settlement measured using vertical distance transducer (LVDT) was automatically done using the data acquisition unit (ADU) and the current was recorded using logging multi-meter.
The electroosmotic tests on the other hand exhibits significant reduction and variations of moisture content especially for the 10kPa-30V test which contains 525% moisture at location close the cathode.
Higher consolidation, meaning higher reduction of moisture content.
The increase of shear strength was contributed by the reduction of moisture content coupled with the probable formation of cementitious material.
Online since: January 2013
Authors: Geng Feng Deng, Gui Rong He, Jue Qi Huang, Peng Xu
Electrochemical test results show that the addition of rare earths can reduce the degree of the plating solution’s polarization, accelerate the electrode reaction speed, increase the alloy reduction capacity, promote alloy’s co-deposition, and improve the bonding strength between alloy layer and substrate, thus the peeling strength between ultra-thin copper foil and carrier is enhanced.
Electrochemical workstation software of AUTOLAB and Origin7.0 are used in data processing.
It can be seen from Figure 2, curve 1 has two smaller peaks at -0.389V and -0.645V, curve 2 has two larger reduction peaks at -0.359V and -0.622V, and two reduction peaks of curve 2 have a little more positive potential shift compared to curve 1.
This fully shows that the addition of rare earth decreases the reduction potential of H-G alloy plating solution, increases the reduction capacity and promotes the alloy deposition speed.
(3)The electrochemical testing results show that the addition of rare earth elements in alloy plating bath can promote the alloy deposition on the carrier foil surface, improve the crystal nucleus formation rate and the metal’s reduction capacity and accelerate the alloy deposition rate.
Online since: December 2019
Authors: Ashot Georgievich Tamrazyan, Micheal Sergeevich Mineev, Aishat Urasheva
The results of heat engineering calculations are presented, where the temperature changes in the reinforcement depending on the heating time and reduction of the protective layer thickness, as well as the change in the diameter of the reinforcement and its effect on the bearing capacity are shown.
Fig. 3 shows the reduction in diameter of the reinforcement during the operational period due to corrosion processes.
This paper takes into account the reduction in thickness δ and considers 6 values (0, 5, 10, 15, 20, 25mm).
The results of heat engineering calculations depending on the time of the fire, the thickness of the protective layer and the diameter of the reinforcement Duration of operation, [year] Bearing capacity, [kN] Thickness d, [mm] Bearing capacity, (kN) normal operating conditions + “standard” fire, [min] corrosion conditions + “standard” fire, [min] 60 90 120 150 30 60 90 120 150 0 - 1649 1371 1091 25 - - 1649 1371 1091 5 25 - - 1649 1371 1091 10 25 - - 1649 1371 1091 15 20 - 2359 1477 1267 953 20 15 - 2148 1369 1169 870 25 10 - 1557 1258 - - 30 5 - 1442 1160 - - 35 0 2254 1335 1061 - - By interpolating the calculated data, the fire resistance limits for this column under the conditions of a “standard” fire with different thicknesses of the protective layer were obtained, which are presented in Fig. 5: Fig.5.
The fire resistance during the operational period Summary According to the results of this study, it was shown that a reduction in the cross-sectional area of the working reinforcement due to corrosion and a reduction in the cross-sectional area of the column leads to a significant decrease in the fire resistance limit due to loss of bearing capacity.
Online since: September 2014
Authors: Haina N. Lu, D.B. Wei, Z.Y. Jiang
Cylindrical workpieces were deformed into stepped shafts with cross-sectional area reductions of 35, 52.73 and 75%.
Additionally, the numerical results have good agreement with the experimental data.
That is why the errors in springback are reduced with the decreasing grain size of copper work pieces after MCWR of the same cross sectional area reduction.
Consequently, the MCWR work pieces sprangback more significantly when the area reduction increased.
Influence of cross-sectional area reduction on springback. 5.
Online since: January 2014
Authors: Qiang Li, Chun Xiao, Chun Zhou, Zi Hao Liu
The real-time vibration signals acquired from field need to be noise reduction, removal of disturbances by digital signal processing technique.
(2) Data preprocessing: process vibration and cable force signals in order to reduce interference by noise reduction, wavelet denoising and so on
(6) Data upload: remote data publishing.
There is no data storage thread in this system, and the data storage is included in data processing thread.
Distribution of network data.
Online since: August 2011
Authors: Na Na Chen, Qing Fei, Hao Ping Hu
Finally, GA is applied in the optimization calculation of rolling schedule and a lot of simulation experiments are conducted with actual data.
Experience-based distribution method[1] is first used in the formulation of rolling schedule, with lots of measured data and big errors.
With a great number of actual data, a lot of model adaptive and procedure simulation experiments are conducted, showing that flatness control is improved compared with the existing schedule used in the actual production.
This constraint condition can guarantee the last two passes under pressure to keep certain amount of reduction, avoid too small pressure to make roll lost contact with steel, and then forme the virtual passes.
With a great number of actual data, a lot of simulation experiments are conducted, showing that flatness control is improved.
Online since: January 2012
Authors: Poppy Puspitasari, Noorhana Yahya, Krzysztof Koziol, Giuseppe Pavia
Energy Dispersive X-Ray spectroscopy Energy Dispersive X-Ray (EDX) spectroscopy data (Table II) indicates the atomic and weight percentage of the corresponding elements; manganese, zinc, iron and oxygen.
It can be speculated as a reduction peak to MnO and FeO.
The third reduction peak is at 759oC which is an expected reduction temperature for all the oxide to the metallic state.
Data TPR for Mn¬0.8Zn0.2Fe2O¬ sintered at 700oC.
Taking the natural logarithm of Arrhenius equation [17] gives, lnk= -EaRx1T+ lnA Y= mx + c Plot ln(k) vs 1T and the data will give a straight line and by determining the slope, the value of activation energy can be calculated.
Online since: December 2019
Authors: Viktoriya Viktorovna Nelubova
It was justified that the mineral modifier from amorphized rocks, regardless of the composition in the pre-autoclave period, acts as a structure-forming component causing the reduction of porous processes with the formation of a system with an improved micro- and macrostructure.
The calculation of the composition of the mixture was made based on the factory data.
Results and Discussions According to the data obtained, with the increase in the concentration of modifiers in the system, the increase in the volume of arrays was observed as compared with the initial control composition without an additive (refer with Table 2): up to 60% for a modifier made from perlite and up to 55% for an additive from silica clay.
The introduction of modifying additives to some extent intensifies the processes of expansion of the gas concrete mix and provides a reduction in their duration while reducing the proportion of cement in the composition of the mixtures from 8 to 35%, depending on the composition of the mixture.
According to the data obtained (refer with figure 1), the introduction of MM on the basis of perlite in the range of 10–50%, while reducing the density of composites, contributes to the increase in strength up to 30%, and the use of MM on the basis of the silica clay in the composition of the raw mix - up to 20%.
Online since: January 2011
Authors: Shahrum Abdullah, Aidy Ali, Sahari B. Barkawi, K.A. Mohammad, A. Oshkour
The fully reversed with high temperature results registered the most severe damage with tremendous of life reduction.
The creep was registered for responsible to the reduction in fatigue life.
Furthermore, the work suggested that the contribution to fatigue life reduction by creep and environmental effects was magnified by the applied stress.
From the results, two equations were fitted to each set of fatigue life data in order to predict the material fatigue life as follows in term of power law: (1) (2) Fig.4 Comparing log-log scale fatigue at room temperature and 350°C with R= -1 and 0.1 It is shown that the fatigue experimental data fitted by Basquin Equation is in log-log scale.
Temperature affects on fatigue behavior are shown in this figure regarding changes in position of data collected by similar stress ratio.
Online since: December 2017
Authors: P. Paula, João M.P.Q. Delgado
According the IBGE data (Census 20010 [1]), there are currently in Brazil about 57,300,000 households considered private and permanent.
The last official data from the IBGE [1] concerning the type of Brazilian housing showed an increase of 43% in the number of apartments in the last decade (2000-2010), from 4,300,000 for 6,100,000.
Data from the João Pinheiro Foundation [12], present in Table 3, show that 83% of the Brazilian housing deficit corresponds to families who earn up to three minimum wages.
Table 16 - Comparative data in function of the estimate energy embodied [73].
[17] IBGE, National Research for sample of Domiciles-2005 micro-data.
Showing 5471 to 5480 of 40315 items