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Online since: June 2008
Authors: Terence G. Langdon, Roberto B. Figueiredo
The load and displacement data were converted to plots of true stress
as a function of true strain.
Therefore the structure refinement from an initial grain size of ~2.9 µm to an average grain size of ~0.8 µm after 2 pressings explains the reduction of the initial flow stress.
Necking occurs when the strain-hardening is not sufficient to balance the tendency for flow localization due to the reduction in the cross-sectional area.
Therefore the structure refinement from an initial grain size of ~2.9 µm to an average grain size of ~0.8 µm after 2 pressings explains the reduction of the initial flow stress.
Necking occurs when the strain-hardening is not sufficient to balance the tendency for flow localization due to the reduction in the cross-sectional area.
Online since: September 2016
Authors: Sun Woo Kim, Vamsi Krishna Kukkapalli
However, both the compacts and porous metal hydrides require an additional preparation and cause a reduction in mass transfer of hydrogen due to their low permeability.
Reduction in the hotspot temperature is the secondary objective.
From this simulation data, it is observed that the required time to cool for the 3-fin design is 153.9 seconds.
Reduction in the hotspot temperature is the secondary objective.
From this simulation data, it is observed that the required time to cool for the 3-fin design is 153.9 seconds.
Online since: December 2010
Authors: Ruslan Valiev, Dmitriy Gunderov, Juri Burow, Jan Frenzel, Egor Prokofiev, Gunther Friedrich Eggeler
The fact that the highest temperature increase is observed during the first 10 hours of annealing conforms well with TEM data showing only a slight increase in the amount of particles with the extension of annealing time from 10 to 100 hours.
Besides, in the UFG and NC states reduction of the mechanical hysteresis takes place due to the fact that with increase of the number of cycles, more considerable reduction of the stresses of direct transformation plateau takes place alongside with the lowering of the plateau of reverse transformation during load removal, and the upper plateau is lowered more significantly.
Besides, in the UFG and NC states reduction of the mechanical hysteresis takes place due to the fact that with increase of the number of cycles, more considerable reduction of the stresses of direct transformation plateau takes place alongside with the lowering of the plateau of reverse transformation during load removal, and the upper plateau is lowered more significantly.
Online since: September 2013
Authors: Mu Han, Jia Zhao, Shi Dian Ma
But since the Montgomery multiplication has condition reduction, which leads a large number of side channel information leaked[8].Therefore, the literature [6] proposed a new type of timing attack on RSA cryptosystem if the exponentiation with the secret exponent uses the Montgomery algorithm, and pointed out that the probability of the final subtraction taking place in a modular exponentiation.
The Montgomery reduction denotes as MonR (A, N, R) =Ar-1 mod N and Montgomery modular multiplication denotes as MonP (A, B, N, R) =ABr-1 mod N; bn-1 < NThe improved algorithm 4 realized the target of preventing time attacks.
4.2 The analysis of thwarting SPA attack
From the step 4 of the improved algorithm 4, when the dj=0 or dj≠0 key section has the same implementation operation of the improved Montgomery, the power consumption is also same.Coupled with the interference of electronic noise,the attacker can not directly obtain the correlation between the power track and the key segment so that this method can effectively against SPA attack.
4.3 The analysis of thwarting DPA attack
DPA attacks mainly using the dependence between energy consumption of cryptographic equipment and the data, and the system’s noise or the spurious operation will be culled.So attackers can acquire the correlation between cipher intermediate values and the power traces, then obtains the correlation key index and the corresponding power track .
The Montgomery reduction denotes as MonR (A, N, R) =Ar-1 mod N and Montgomery modular multiplication denotes as MonP (A, B, N, R) =ABr-1 mod N; bn-1 < N
Online since: February 2015
Authors: Sergey Panin, Roman Romashko, Tatiana I. Bashkova, Oleg Bashkov
Herzberg was the systematization of data about the kinds of stress-strain curves for materials with different types of crystal lattice and the structural state [1].
This stages characterized by a reduction of diagrams = f (e), associated with the localization of deformation.
Macrolocalization deformation, accompanied by formation of a neck, usually leads to a significant reduction in the activity of AE until complete disappearance.
This stages characterized by a reduction of diagrams = f (e), associated with the localization of deformation.
Macrolocalization deformation, accompanied by formation of a neck, usually leads to a significant reduction in the activity of AE until complete disappearance.
Online since: December 2016
Authors: Arthit Neramittagapong, Jatuporn Wittayakun, Sirinuch Loiha, Waenkaew Pantupho, Nuttawut Osakoo
This work interested in reduction of the strong acidic sites of HZSM-5 for improvement of the catalytic activity for methanol dehydration.
Brückner, Reduction of N2O with CO over FeMFI zeolites: influence of the preparation method on the iron species and catalytic behavior, J.
Pitfalls and limitations in gas adsorption data analysis, Micropor.
Brückner, Reduction of N2O with CO over FeMFI zeolites: influence of the preparation method on the iron species and catalytic behavior, J.
Pitfalls and limitations in gas adsorption data analysis, Micropor.
Online since: April 2024
Authors: Arif Mammadov, Elxan Mammadov, Muxtar Huseynov, Nizami Ismayilov
The allowances used in the ship and ship cleaning are mostly measured data.
The kinetics of the reduction of hydrogen and nitrogen are determined by the following phases of the process: - the mixing of the atoms of the glass by the metal-glass separation process; - in the absence of hydrodynamic mixing, the diffuse thickness is reduced by means of a thin diffuse layer (if the width is intensively mixed, the thickness of the diffuse layer will be much less); - adsorption of the atoms of the glass at the bottom of the floor; - molecularization reactions and creation of qaz molecules; or; - desorbsiology of wounded molecules to the qase phase; quantity of sand molecules.
It can be seen from the equations (1) - (3) that the following factors contribute to the speed of degassing: - reduction of pressure on the surface of liquid steel; - value of the mass transfer coefficient; - value of the ratio of the treated surface to the volume of the metal, i.e .
The kinetics of the reduction of hydrogen and nitrogen are determined by the following phases of the process: - the mixing of the atoms of the glass by the metal-glass separation process; - in the absence of hydrodynamic mixing, the diffuse thickness is reduced by means of a thin diffuse layer (if the width is intensively mixed, the thickness of the diffuse layer will be much less); - adsorption of the atoms of the glass at the bottom of the floor; - molecularization reactions and creation of qaz molecules; or; - desorbsiology of wounded molecules to the qase phase; quantity of sand molecules.
It can be seen from the equations (1) - (3) that the following factors contribute to the speed of degassing: - reduction of pressure on the surface of liquid steel; - value of the mass transfer coefficient; - value of the ratio of the treated surface to the volume of the metal, i.e .
Online since: February 2022
Authors: Evgeniy V. Aryshenskii, Viacheslav Bazhenov, Jurgen Hirsch, Sergey Konovalov
In general, the dendritic structure refinement data of the aluminum alloys match those obtained in the studies [17].
As for example, addition of 0.05 % and 0.1 % of zirconium to Al0.3Mg1.0Si0.3Sc alloy will lead to a grain size reduction from 1400 to 600 µm, further increase in zirconium content will lead to a grain size reduction to 200 µm.
As for example, addition of 0.05 % and 0.1 % of zirconium to Al0.3Mg1.0Si0.3Sc alloy will lead to a grain size reduction from 1400 to 600 µm, further increase in zirconium content will lead to a grain size reduction to 200 µm.
Online since: February 2012
Authors: Heung Youl Kim, Hyung Jun Kim, In Kyu Kwon
But contrary to the merits of structural steels, the reduction of the load carrying capacity during a fire should be complemented by protection and fire resistance of columns and beams have to satisfy with each nation’s regulation [1].
Recently, the use of hollow sections is steadily increasing with the merits of asymmetric shapes and easiness to construct and reduction of construction cost [13].
Till now, Korea is keen to make the technical data to develop guidelines for a fire engineering design.
Recently, the use of hollow sections is steadily increasing with the merits of asymmetric shapes and easiness to construct and reduction of construction cost [13].
Till now, Korea is keen to make the technical data to develop guidelines for a fire engineering design.
Online since: July 2016
Authors: Luigi Petti, Alessio Lodato, Angelo Mammone
The results show the effectiveness of the isolation strategy in the reduction of the probability of exceeding the limit states in the case of piers 1-2-5.
Results show, for both types of piers, not always a significant reduction of the base shear and horizontal top displacements in the case of retrofit with seismic isolation.
[20] Straub, D., Der Kiureghian, A., “Improved seismic fragility modeling from empirical data”, Structural Safety, 30(4), (2008), pp. 320–336
Results show, for both types of piers, not always a significant reduction of the base shear and horizontal top displacements in the case of retrofit with seismic isolation.
[20] Straub, D., Der Kiureghian, A., “Improved seismic fragility modeling from empirical data”, Structural Safety, 30(4), (2008), pp. 320–336