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Online since: October 2004
Authors: Alain Jacques, M. Polcarová, J. Brádler, Pavel Lejček, Vaclav Paidar
Detailed analysis of experimental
data will be published elsewhere.
The main driving force acting on the moving grain boundary is due to reduction of the boundary energy via decreasing the boundary area.
It was found that a linear relationship holds between L and a for all measured boundary segments indicating that the migrating distance a is a good measure of the boundary area reduction.
The main driving force acting on the moving grain boundary is due to reduction of the boundary energy via decreasing the boundary area.
It was found that a linear relationship holds between L and a for all measured boundary segments indicating that the migrating distance a is a good measure of the boundary area reduction.
Online since: March 2010
Authors: Tong Min Yu, Hai Xin Bei, Ze Yu Yan, Hua Xu, Yu Wu, Bin Xu
Temperature
transducer
Capillary die
Data Acquisition
Temperature
transducer
System
Thin pads
Die holder Die holder
Gap
Fig.1 The schematic of experimental device
Experiment in the channels with the same aspect ratio
The barrel temperature is set at 220℃ and 240℃ respectively, the temperature rises with identical
aspect ratio of 16 are measured and represented in Fig.2.
Recently, several studies [10-11] have indicated that the reduction of melt viscosity within micro-channel becomes more significant when size of micro-channel decreases.
Therefore the shearing friction and viscous dissipation effect are weakened when the characteristic size of micro channel decreases, which contributes to the reduction of temperature rise at the same shear rate. 0 2 4 6 8 10 12 14 16 3000 4000 5000 6000 7000 8000 9000 10000 Apparent Sheart rate(s -1) Outlet temperature rise ( ℃ ) D=350µm,T=220℃ D=350µm,T=240℃ D=500µm,T=220℃ D=500µm,T=240℃ Fig.2 The outlet temperature rise curves of various diameters channels with the same aspect ratio Experiment in the channels with various aspect ratios The outlet temperature rises of various aspect ratios channels at different inlet temperatures are shown in Fig.3 and Fig.4.
Recently, several studies [10-11] have indicated that the reduction of melt viscosity within micro-channel becomes more significant when size of micro-channel decreases.
Therefore the shearing friction and viscous dissipation effect are weakened when the characteristic size of micro channel decreases, which contributes to the reduction of temperature rise at the same shear rate. 0 2 4 6 8 10 12 14 16 3000 4000 5000 6000 7000 8000 9000 10000 Apparent Sheart rate(s -1) Outlet temperature rise ( ℃ ) D=350µm,T=220℃ D=350µm,T=240℃ D=500µm,T=220℃ D=500µm,T=240℃ Fig.2 The outlet temperature rise curves of various diameters channels with the same aspect ratio Experiment in the channels with various aspect ratios The outlet temperature rises of various aspect ratios channels at different inlet temperatures are shown in Fig.3 and Fig.4.
Online since: October 2011
Authors: Ke Xin Bi, Hui Zi Ma, Wan Hong Li
Rogge(2010); Nordhaus, W. (2011); Zappa& Mariani(2011)
Energy saving and emission reduction regulation
Carbon emissions control
8
Exterior cooperation
Cooperation with universities
Cooperation with research institutions
Cooperation with agencies
Coopetition with other enterprises
9
Competition pressure
Carbon-supply market competition
Industry competitiveness
10
Green-tech market stato
Current low-carbon market development
Future technology development orientation
Organizational Context.
Government promotion policies and regulations like R&D promotion policies, energy saving and emission reduction regulation, carbon emissions control are exogenous determinants for green process innovation, governmental decisions provide a future-oriented direction in a macroscopic view, enterprises on compulsions are limited by government regulations are coerced to implement green technology & process.
Associated data is collected through questionnaires sent to professionals on innovation and executives in manufacturing enterprises.
Government promotion policies and regulations like R&D promotion policies, energy saving and emission reduction regulation, carbon emissions control are exogenous determinants for green process innovation, governmental decisions provide a future-oriented direction in a macroscopic view, enterprises on compulsions are limited by government regulations are coerced to implement green technology & process.
Associated data is collected through questionnaires sent to professionals on innovation and executives in manufacturing enterprises.
Online since: September 2015
Authors: Olesia Mikhailova, Pavel Rovnaník
The addition of PPG and PEG 1000, 6000, 20000 resulted in reduction of compressive strength.
Therefore, it can be concluded that PEG has no effect on the reduction of microcracks.
This new phenomenon, however, cannot be explained just based on the mechanical data and microscopic observation and further analyses are needed.
Therefore, it can be concluded that PEG has no effect on the reduction of microcracks.
This new phenomenon, however, cannot be explained just based on the mechanical data and microscopic observation and further analyses are needed.
Online since: September 2007
Authors: Xun Cai, Zhen Guo Wang
It is generally believed that the driving force of
film agglomeration is the reduction of interface free energy [7].
XRD analysis exhibits that Ag/Ti bilayers are highly textured at Ag(111) and Ag(222)[9,16].Tepper et al concluded that Ti film in Ag/Ti system transforms from hcp to fcc structure for the free energy reduction and (0002) texture in hcp becomes (111) in fcc.
All these data demonstrate titanium has a favorable layer growth mode.
XRD analysis exhibits that Ag/Ti bilayers are highly textured at Ag(111) and Ag(222)[9,16].Tepper et al concluded that Ti film in Ag/Ti system transforms from hcp to fcc structure for the free energy reduction and (0002) texture in hcp becomes (111) in fcc.
All these data demonstrate titanium has a favorable layer growth mode.
Online since: July 2008
Authors: Mahmoud Nili-Ahmadabadi, S. Hossein Nedjad, H. Meidani
The reduction of excess surface energy is the driving force for such change in microstructure.
As the grains, even in early stages of deformation, are relatively spherical in shape it can be assumed that long-range diffusion between different particle sizes is the primary mechanism for reduction in surface energy and the short-range mass transport between surfaces of different curvature in the same particle is not significant.
Consequently, the coarsening process in the specimens should follow the LSW theory with n=3 and as it is observed in Fig. 5 the data well undergoes the LSW equation with n=3, and the regression parameter R=0.960 which is very close to 1.
As the grains, even in early stages of deformation, are relatively spherical in shape it can be assumed that long-range diffusion between different particle sizes is the primary mechanism for reduction in surface energy and the short-range mass transport between surfaces of different curvature in the same particle is not significant.
Consequently, the coarsening process in the specimens should follow the LSW theory with n=3 and as it is observed in Fig. 5 the data well undergoes the LSW equation with n=3, and the regression parameter R=0.960 which is very close to 1.
Online since: June 2017
Authors: Ivailo Terzijski, Lukáš Zvolánek
Thus, the input data for residual stress prediction, i.e. shrinkage and modulus of elasticity development, were measured experimentally.
The concrete mixture labelled as C2 was proposed with respect to reduction of residual stresses due to shrinkage.
Therefore, the C2 contains shrinkage reduction admixture and expansion admixture at the dosage of 3 % and 5 % (by weight of cement content) respectively.
The concrete mixture labelled as C2 was proposed with respect to reduction of residual stresses due to shrinkage.
Therefore, the C2 contains shrinkage reduction admixture and expansion admixture at the dosage of 3 % and 5 % (by weight of cement content) respectively.
Online since: August 2007
Authors: Paulo N.B. Reis, Marcelo F.S.F. de Moura, Ana M. Amaro, A.G. Magalhães
Introduction
Impact damage is considered the primary cause of in-service delamination in composites
giving reductions of the compressive residual strength up to 60% [1-2].
On the other hand, Amaro et al [3] studied the residual flexural strength in carbon-fibre-reinforced epoxy laminates after low velocity impact and observed also a significant reduction on the flexural strength.
The method requires the local strengths (σu,i, i=I, II, III) and the critical strain energies release rates (Gic) as inputted data parameters.
On the other hand, Amaro et al [3] studied the residual flexural strength in carbon-fibre-reinforced epoxy laminates after low velocity impact and observed also a significant reduction on the flexural strength.
The method requires the local strengths (σu,i, i=I, II, III) and the critical strain energies release rates (Gic) as inputted data parameters.
Online since: June 2010
Authors: Kateryna Bazaka, Mohan V. Jacob, Elena P. Ivanova
., Chicago, Illinois, USA) was used for the statistical analysis of the data.
Comparative FTIR and Raman studies demonstrated a notable reduction of oxygen containing moieties, and loss of some monomer structures, such as unsaturation, in polymer thin film samples.
The reduction in chemical functionality was more profound in the case of films deposited at increased RF power levels, due to the increased ionisation and consequent enhanced fragmentation of the terpinen-4-ol molecule.
Comparative FTIR and Raman studies demonstrated a notable reduction of oxygen containing moieties, and loss of some monomer structures, such as unsaturation, in polymer thin film samples.
The reduction in chemical functionality was more profound in the case of films deposited at increased RF power levels, due to the increased ionisation and consequent enhanced fragmentation of the terpinen-4-ol molecule.
Online since: March 2004
Authors: Yoichi Nishino
The ln � versus 1/T
plots (�, resistivity; T, temperature) for the data on Fe2VAl become almost linear in the temperature
interval 400 800 K, and an energy gap of approximately 0.1 eV is deduced from its slope.
A substantial reduction in the resistivity at around room temperature certainly acts in favor of the development of thermoelectric materials.
We conclude that a substantial shift of EF from the center of the pseudogap due to doping is responsible for a large enhancement in the Seebeck coefficient and for a significant reduction in the low-temperature resistivity.
A substantial reduction in the resistivity at around room temperature certainly acts in favor of the development of thermoelectric materials.
We conclude that a substantial shift of EF from the center of the pseudogap due to doping is responsible for a large enhancement in the Seebeck coefficient and for a significant reduction in the low-temperature resistivity.