Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Geochemical Impacts on CO2 Storage Efficiency in Deep Aquifers: A Cameroon Gulf of Guinea Case Study
Online since: February 2025
Authors: Gregory Mwenketishi, Hadj Benkreira, Nejat Rahmanian, Hassan Soleimani
We employ a compositional flow model, which has been validated using data from a Subsurface interpretation project in Cameroon.
These data, like H2O, have been rigorously analyzed throughout EoS development, particularly in recent years.
[10] Aminu, N., Meenagh, D. and Minford, P., The role of energy prices in the Great Recession—A two-sector model with unfiltered data.
Journal of Physical and Chemical Reference Data. (2021) 50(3)
Journal of physical and chemical reference data. 25(6) (1996) 1509-1596
These data, like H2O, have been rigorously analyzed throughout EoS development, particularly in recent years.
[10] Aminu, N., Meenagh, D. and Minford, P., The role of energy prices in the Great Recession—A two-sector model with unfiltered data.
Journal of Physical and Chemical Reference Data. (2021) 50(3)
Journal of physical and chemical reference data. 25(6) (1996) 1509-1596
Online since: May 2011
Authors: Je Ee Ho
It not only features as an stable, economical and affordable utility for local researchers, but a safe, easy operation with fast data acquisition would be also accessed.
So the reduction of magnetization for thermal effect might be identified here.
Summary from overall behavior ,the proposed testing method in modified Langevin theory has been identified to be an easy, effective and affordable way to measure the magnetic behavior of ferrofluid and the predicted results are found to to be close agreement with the experimental data conducted by VSM.
So the reduction of magnetization for thermal effect might be identified here.
Summary from overall behavior ,the proposed testing method in modified Langevin theory has been identified to be an easy, effective and affordable way to measure the magnetic behavior of ferrofluid and the predicted results are found to to be close agreement with the experimental data conducted by VSM.
Online since: September 2013
Authors: Manuel Parente, António Gomes Correia
Data was obtained and analysed by the IC continuous information, as well as by the application of several different conventional compaction control tests and methods.
Based on a roller integrated system, including components such as accelerometers that measure drum vibration, onboard electronics that record and process sensor output and material stiffness, associated with linkage elements to the machine controls that allow for compaction effort adjustment according to measured stiffness, GPS system to record machine location and local storage or wireless communication system for data transfer [4–6].
Furthermore, both an increase in productivity and a reduction of costs during the compaction process are associated with the advantages of this technology [7].
Based on a roller integrated system, including components such as accelerometers that measure drum vibration, onboard electronics that record and process sensor output and material stiffness, associated with linkage elements to the machine controls that allow for compaction effort adjustment according to measured stiffness, GPS system to record machine location and local storage or wireless communication system for data transfer [4–6].
Furthermore, both an increase in productivity and a reduction of costs during the compaction process are associated with the advantages of this technology [7].
Online since: November 2012
Authors: Guang Ning Yang, Xiang Dong Zhang, Bao Rong Huo
Data from the arch ring calculation results, the bridge has certain overload potential.
Filler of the solid period and spandrel arch simplify both ends and the road and the rod of the hinged unit of the arch ring .The horizontal wall of the spandrel structure is simplified to ring of rigid connection beam element with the main arch.(3)Building the model of Aohan Bridge considering the action of continuous arch effect, also is the model including piers and another bridge structure.(4)The main arch ring produces local craze, considering stiffness reduction of the main arch ring.
(3)Data from the arch ring calculation results, the bridge has certain overload potential.
Filler of the solid period and spandrel arch simplify both ends and the road and the rod of the hinged unit of the arch ring .The horizontal wall of the spandrel structure is simplified to ring of rigid connection beam element with the main arch.(3)Building the model of Aohan Bridge considering the action of continuous arch effect, also is the model including piers and another bridge structure.(4)The main arch ring produces local craze, considering stiffness reduction of the main arch ring.
(3)Data from the arch ring calculation results, the bridge has certain overload potential.
Online since: March 2007
Authors: Anthony P. Reynolds
This is to be expected based on the hardness data that are shown in figure 1 and the fact that tensile
failure in the 5454-H32 welds occurs in the softened, weld nugget region.
The data in the figure are grouped by advance per revolution (APR) and plotted vs.
The aging response is shown as ΔVHN (the change in vicker's hardness) and the data are grouped as in figure 3.
Examination of process data for these welds showed that (1) higher welding speed at a given APR corresponds to higher weld power and (2) lower APR at a constant welding speed corresponds to higher weld power.
Figure 6 shows HAZ hardness data for the same set of welds shown in figure 3 (nugget hardness).
The data in the figure are grouped by advance per revolution (APR) and plotted vs.
The aging response is shown as ΔVHN (the change in vicker's hardness) and the data are grouped as in figure 3.
Examination of process data for these welds showed that (1) higher welding speed at a given APR corresponds to higher weld power and (2) lower APR at a constant welding speed corresponds to higher weld power.
Figure 6 shows HAZ hardness data for the same set of welds shown in figure 3 (nugget hardness).
Online since: October 2013
Authors: Jerzy Graffstein
The ability to avoid safely a collision with previously unknown obstacles depends on many factors, first of all on flying object’s manoeuvrability, allocation of obstacles, their sizes, parameters of motion, object to obstacle distance in the moment of detection and accuracy of data characterising the obstacle.
This structure covers necessary data sources and units for storing pre prepared data and executing the most relevant mathematical and logical operations.
Detection and identification of the previously unknown obstacle by the radar detector of obstacles (RDP), as well as the information from data base of obstacles are the necessary data for choosing a safe manoeuvre.
Reduction of turning radius by increasing the roll angle causes the lost of altitude and reduction of longitudinal component of velocity vector.
This structure covers necessary data sources and units for storing pre prepared data and executing the most relevant mathematical and logical operations.
Detection and identification of the previously unknown obstacle by the radar detector of obstacles (RDP), as well as the information from data base of obstacles are the necessary data for choosing a safe manoeuvre.
Reduction of turning radius by increasing the roll angle causes the lost of altitude and reduction of longitudinal component of velocity vector.
Online since: April 2009
Authors: Javad Koohsorkhi, Nima Davoudzadeh, Shamsoddin Mohajerzadeh, Ebrahin Asl Soleimani, Hasan Ghafouri Fard
Also the results of simulation have been compared with the experimental data.
The experimental data are obtained using a Keithley 2361 parameter analyzer by measuring the anode current with respect to the gate/cathode and anode/cathode voltages.
Referred to the experimental data of Fig. 7 (right) at low anode voltages only the gate voltage causes an emission of electrons form the CNT tip.
Right: Experimental data for the effect of gate voltage on the emission current.
Based on the data obtained from the simulation results the best performance is obtained if the distance between nanotubes is set to be the same as the length of nanotubes.
The experimental data are obtained using a Keithley 2361 parameter analyzer by measuring the anode current with respect to the gate/cathode and anode/cathode voltages.
Referred to the experimental data of Fig. 7 (right) at low anode voltages only the gate voltage causes an emission of electrons form the CNT tip.
Right: Experimental data for the effect of gate voltage on the emission current.
Based on the data obtained from the simulation results the best performance is obtained if the distance between nanotubes is set to be the same as the length of nanotubes.
Online since: September 2014
Authors: Samah B. Daffalla, Hilmi Mukhtar, Maizatul Shima Shaharun
In this study, the three kinetic models namely, the pseudo-first order equation, the pseudo second order equation and the Elovich equation will be used to test experimental data (Table 1).
A decrease in pH probably results in a reduction of the negative charges at the surface of adsorbents [7].
The kinetics of the adsorption data were analyzed using the pseudo-first order, pseudo-second order and Elovich models (Table 1).
Furthermore, the experimental values (qe) do not agree with the calculated ones, which indicate that the pseudo-first-order equation cannot provide an accurate fit of the experimental data.
Even though these results are good, but a comparison with the Elovich model shows that the latter gives a better fit between experimental and calculated data.
A decrease in pH probably results in a reduction of the negative charges at the surface of adsorbents [7].
The kinetics of the adsorption data were analyzed using the pseudo-first order, pseudo-second order and Elovich models (Table 1).
Furthermore, the experimental values (qe) do not agree with the calculated ones, which indicate that the pseudo-first-order equation cannot provide an accurate fit of the experimental data.
Even though these results are good, but a comparison with the Elovich model shows that the latter gives a better fit between experimental and calculated data.
Online since: June 2008
Authors: Erika Fernanda Prados, Vitor Luiz Sordi, Maurizio Ferrante
Within the data it is possible to recognize two groups of samples: those submitted to the ageing
treatments, characterized by high strength and high ductility, and the slowly cooled and annealed
specimens, with lower strength.
(ii) Microstructure Figure 5 shows the microstructure of samples 1X and 4X, each heat treated at 170 and 100 oC, and Table III summarizes data on grain size and precipitate apparent length.
Consequently, although they are clearly non-shearable, their low intragranular volume fraction is insufficient for dislocation accumulation, hence the low WH rate showed by the present experimental data.
Double arrows identify the correlations confirmed by the present data.
Conclusions (i) Experimental data shows that ECAP-deformation accelerates the precipitation kinetics of the Al2Cu phase in Al-4%Cu.
(ii) Microstructure Figure 5 shows the microstructure of samples 1X and 4X, each heat treated at 170 and 100 oC, and Table III summarizes data on grain size and precipitate apparent length.
Consequently, although they are clearly non-shearable, their low intragranular volume fraction is insufficient for dislocation accumulation, hence the low WH rate showed by the present experimental data.
Double arrows identify the correlations confirmed by the present data.
Conclusions (i) Experimental data shows that ECAP-deformation accelerates the precipitation kinetics of the Al2Cu phase in Al-4%Cu.
Online since: December 2025
Authors: Pravat K. Satapathy, Surya Narayan Pati, Sasanka Choudhury, Subhrajit Beura, Upendra Kumar Mohanty
Similar to the effects seen under hydrothermal and hygrothermal aging conditions, these include reductions in elastic modulus, glass transition temperature, and interlaminar shear strength (ILSS).
This degradation may result in delamination, fiber-matrix debonding, and further reductions in ILSS.
Analysis of variance on the composed data from the Taguchi design of experiments used to assign fresh values of the factors to optimize the performance characteristic [11].
Sl No Variables Level -i Level -ii Level -iii 1 Salinity (‰) 30 ‰ 35 ‰ 40 ‰ 2 Time of immersion (T) 30 days 60 days 90 days 3 Rate of loading (ε) 1 mm/min 5 mm/min 9 mm/min 2.1 Taguchi Method Taguchi proposed several methods for data analysis like data observation, ranking, column-effect method, ANOVA, S/N ratio, response curves, interaction plots etc.
The normal probability plot for Taguchi method is presented in Fig. 2 The data entered and the model fitted (the straight line) are close to each other.
This degradation may result in delamination, fiber-matrix debonding, and further reductions in ILSS.
Analysis of variance on the composed data from the Taguchi design of experiments used to assign fresh values of the factors to optimize the performance characteristic [11].
Sl No Variables Level -i Level -ii Level -iii 1 Salinity (‰) 30 ‰ 35 ‰ 40 ‰ 2 Time of immersion (T) 30 days 60 days 90 days 3 Rate of loading (ε) 1 mm/min 5 mm/min 9 mm/min 2.1 Taguchi Method Taguchi proposed several methods for data analysis like data observation, ranking, column-effect method, ANOVA, S/N ratio, response curves, interaction plots etc.
The normal probability plot for Taguchi method is presented in Fig. 2 The data entered and the model fitted (the straight line) are close to each other.