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Online since: November 2018
Authors: Abdellah El Barkany, Ahmed El Biyaali, Ikram El Abbassi, Assia Sadiqi
If we can build algorithms called pseudo-polynomial, which are polynomial algorithms according to the length of the data (memory size); the problem studied is then NP-complete in the weak sense; otherwise, it is NP-complete in a strong sense.
Two heuristic algorithms based on JA are proposed with reduction of the error terminals of the worst case.
Two heuristic algorithms based on JA are proposed with reduction of the error terminals of the worst case.
Online since: June 2021
Authors: Ya Ping Bai, Jian Ping Li, Dong Dong Jiao, Jin Zhou, Ke Ke Tian, Zhong Yang
The results showed that the reduction of rolling temperature with subsequent 85% of non-recrystallization zone resulted in high density dislocation zone and more deformation bands in γ grain.
Hu, Practical inorganic thermodynamics data Book, Metallurgical industry press, China, 2002.
Hu, Practical inorganic thermodynamics data Book, Metallurgical industry press, China, 2002.
Online since: April 2015
Authors: Mateus das Neves Gomes, Liércio André Isoldi, Luiz Alberto Oliveira Rocha, Flávio Medeiros Seibt, Elizaldo Domingues dos Santos, Marcelo Moraes Goulart, Bianca Neves Machado, Maria Fernanda Espinel Lara, Silvana Letícia Pires Iahnke
., when the OWC-WEC is more submerged, leads to an increase of the RMS value of hydro-pneumatic power, except for the lowest magnitude of H1/L = 0.03 where it is noticed a strong reduction of RMS power for H3 = 9.0 m.
This leads to a significant reduction of the amount of water entering in the reservoir.
The simulation time was 20 s and the data were collected for Δt = 0.05 s.
Also there is a decrease of this value only (16%) for L/LP = 1.00, when the plate has a length equal to the wavelength The reduction of the absolute values of the velocity, mass flow rate and efficiency, observed in case 11 (L/LP = 1.00), was probably due to the greater dissipation of energy of the incident wave.
This leads to a significant reduction of the amount of water entering in the reservoir.
The simulation time was 20 s and the data were collected for Δt = 0.05 s.
Also there is a decrease of this value only (16%) for L/LP = 1.00, when the plate has a length equal to the wavelength The reduction of the absolute values of the velocity, mass flow rate and efficiency, observed in case 11 (L/LP = 1.00), was probably due to the greater dissipation of energy of the incident wave.
Online since: February 2016
Authors: Hallouma Bilel, Rawdha Medyouni, A.S. Al-Ayed, Naceur Hamdi, Cédric Fischmeister, Christian Bruneau
Compounds 3 were identified from analysis of their spectroscopic data.
The structures of the novel compounds 7 and 10 were characterized by combination of 1H NMR, FT-IR, UV-vis and MS spectra data.
Spectral data of the newly synthesized compounds 11 and 12 are consistent with the proposed structures.
The data proved that compound 17d showed the strongest antioxidant activity.
The 13C NMR data are accord with the expected structure.
The structures of the novel compounds 7 and 10 were characterized by combination of 1H NMR, FT-IR, UV-vis and MS spectra data.
Spectral data of the newly synthesized compounds 11 and 12 are consistent with the proposed structures.
The data proved that compound 17d showed the strongest antioxidant activity.
The 13C NMR data are accord with the expected structure.
Online since: March 2019
Authors: Dominique Mangelinck
The increasing importance of interface energy due to the reduction of the layer thicknesses results in a strong texture of the phases that form.
This agreement between the two sets of data implies that the effective diffusion coefficients during growth are not enhanced by the creation of point defects which have been shown to occur under some circumstances [35,36].
The kinetic parameters controlling the growth of the M2Si layer have thus been extracted from experimental data using a model that considers both interfacial reactions and atom diffusion through the growing M2Si layer, i.e the Deal and Groves growth law (linear-parabolic law for isotherm) [74]:
This agreement between the two sets of data implies that the effective diffusion coefficients during growth are not enhanced by the creation of point defects which have been shown to occur under some circumstances [35,36].
The kinetic parameters controlling the growth of the M2Si layer have thus been extracted from experimental data using a model that considers both interfacial reactions and atom diffusion through the growing M2Si layer, i.e the Deal and Groves growth law (linear-parabolic law for isotherm) [74]:
Online since: July 2015
Authors: Amir Al-Ahmed, Mohammed Mumtaz A. Khan
In more precise terms, localized adsorption results in loss of translational motion and in a reduction of rotational degrees of freedom of the adsorbed hydrogen molecule [35,36].
Based on extrapolation of some available data relating hydrogen uptake to surface area, Ströbel et al. [46] suggested that a gravimetric density of 6 wt% would be attained at a specific surface greater than 4000 m2 g-1; which does not seem to be yet available.
For a compilation of data on more than 50 MOFs and reference to previous work, the interested reader is referred to the recent review by Collins and Zhou [90].
Based on extrapolation of some available data relating hydrogen uptake to surface area, Ströbel et al. [46] suggested that a gravimetric density of 6 wt% would be attained at a specific surface greater than 4000 m2 g-1; which does not seem to be yet available.
For a compilation of data on more than 50 MOFs and reference to previous work, the interested reader is referred to the recent review by Collins and Zhou [90].
Online since: June 2024
Authors: Riyadh S. AL-Turaihi, Fawzi Sh. Alnasur
Experimental data and correlations are using for calculate a turbulent convective heat transfer across a coiled and straight tubing with and without helical tape liners.
Fabio Toshio Kanizawa et al. [78] provided experimental data for the heat transfer coefficient (h) and pressure drop (Δp) for two-phase flows in horizontal ID tubes (12.7 mm and 15.9 mm) with and without twisted-tape inserts for TR (3, 4, 9, and 14).
Azizi et al. [72] (2022) experimentally twisted tape The flow pattern map demonstrated that the instantaneous conversion of slug flow to bubbly flow was caused by the reduction of twisted tape pitch.
Fabio Toshio Kanizawa et al. [78] provided experimental data for the heat transfer coefficient (h) and pressure drop (Δp) for two-phase flows in horizontal ID tubes (12.7 mm and 15.9 mm) with and without twisted-tape inserts for TR (3, 4, 9, and 14).
Azizi et al. [72] (2022) experimentally twisted tape The flow pattern map demonstrated that the instantaneous conversion of slug flow to bubbly flow was caused by the reduction of twisted tape pitch.
Online since: July 2019
Authors: Wiktor Matysiak
With the employment of the presented method, the knowledge of optical constants of all phases constituting a composite and of fibrous mat’s coarseness condition is not required, as the data on the optical characteristics provided by absorbance spectrum of the electromagnetic radiation of the analysed nano-scale fibres, constituting a porous stratum, are a direct resultant of optical characteristics of the matrix material, reinforcement phase and morphology of the analysed stratum.
The angular position of the diffraction line was, according to data contained in the ICDD JCPDS database, the amorphous structure of SiO2 (Fig. 5).
An increase in the thickness of the fibres, accompanied by a reduction of the distance between the nozzle and the collector during the process of electrospinning, both for nanofibres obtained from the non-doped PAN polymer and the composite PAN nanofibres reinforced with ceramic particles of TiO2, Bi2O3 and SiO2, is probably caused by less power of the force acting on the induced electrical loads in the spinning solution, when the distance between the electrodes is equal to 12.5 cm, compared to the force speed that influences the induced loads at a distance of 20 cm.
The angular position of the diffraction line was, according to data contained in the ICDD JCPDS database, the amorphous structure of SiO2 (Fig. 5).
An increase in the thickness of the fibres, accompanied by a reduction of the distance between the nozzle and the collector during the process of electrospinning, both for nanofibres obtained from the non-doped PAN polymer and the composite PAN nanofibres reinforced with ceramic particles of TiO2, Bi2O3 and SiO2, is probably caused by less power of the force acting on the induced electrical loads in the spinning solution, when the distance between the electrodes is equal to 12.5 cm, compared to the force speed that influences the induced loads at a distance of 20 cm.
Online since: November 2014
Authors: S. Balakumar, X. Sahaya Shajan, S. Alwin, R. Antony, K. Karuppasamy
The study of MacCallum on PEOn: Lix system in 1987 was the benchmark data [5].
Combined differential scanning calorimetry, molecular weight measurement and IR data showed that the evaporated films are partially composed of molten state structure such as that observed in molten PEO.
The increase in conductivity was mainly attributed to the reduction of crystallinity and enhancement of free volume of the system [89].
Combined differential scanning calorimetry, molecular weight measurement and IR data showed that the evaporated films are partially composed of molten state structure such as that observed in molten PEO.
The increase in conductivity was mainly attributed to the reduction of crystallinity and enhancement of free volume of the system [89].
Online since: June 2010
Authors: Dong Lu Shi, Eleni Katsanevakis, Ning Zhang, Xue Jun Wen
Other less prevalent applications of biomineralization
are the use of bionanominerals, which are produced mainly through microbial reduction, and
include metallic nanocrystals and metal phosphates.
For 10X SBF, however, it is 3.5 hours (unpublished data).
When co-cultured with dental pulp stem cells (DPSCs) in vitro, these nanofibrous scaffolds have led to directional organization of the DPSCs into 3-D native bone-like architecture (unpublished data).
For 10X SBF, however, it is 3.5 hours (unpublished data).
When co-cultured with dental pulp stem cells (DPSCs) in vitro, these nanofibrous scaffolds have led to directional organization of the DPSCs into 3-D native bone-like architecture (unpublished data).