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Online since: October 2010
Authors: René Pailler, Florian Fontaine, Alain Guette
(°C) 220 L 3 0,015 10 0.0045 1140 15 L 3 0,015 0,7 0.06 1350 The decrease in CO partial pressure results in a reduction in nitridation temperature of about 200°C.
There is a little gap between the data from GEMINI 2 and the calculated values (Table 1).
In this case, carbothermal reduction of Al2O3 occurs above 1800°C, so no oxicarbides or carbonitrides can be formed.
Jung: Is it possible to synthesize cubic aluminum nitride by the carbothermal reduction and nitridation method?
Online since: October 2014
Authors: Leily Nurul Komariah, Susila Arita Rachman
Biodiesel is recognized as a potential fuel with many beneficials effects, especially in emission reduction.
The boiler was operated in full load mode during the test, while data was collected in every 10 minutes.
At higher blends of biodiesel (B50), more combustion air show elevated levels of CO and a reduction of CO2.
In the use of higher blends of biodiesel, when the air intake to the combustion chamber is beyond the optimum amount of excess air, it caused a reduction in exhaust gas temperature.
Online since: April 2014
Authors: Tomáš Kubina, Aleš Bořuta, Josef Bořuta, Margita Longauerová
The purpose of the first reduction at approximately 1000 °C is to refine austenite grains by re-crystallization.
The purpose of the second reduction at temperatures of 950 – 930 °C is to utilize the fastest available course of precipitation (Nb, V)(C, N), that should, at the same time, accelerate the kinetics of DIFT.
Finally, three reductions at 820 °C are considered [2] as DIFT rolling.
In preparation of the plastometer for physical simulations in this temperature range, frequent modifications to the control software were performed in order to allow data acquisition for these temperature ranges as well.
Online since: April 2011
Authors: Shui Wen Zhu, Guo Ping Chen, Jian Ping Fan
The data presented in [7] revealed that the stress-strain response is sensitive to the strain rate during the curing process of the composite.
●Subsequently, stresses increased due to polymerization, stiffening and a reduction of visco-elasticity of the composite (150-450s).
Figs.2 and 3 shows that the process can be divided into three different phases: ●a viscous behaviour phase ●a reduction of visco-elasticity behaviour phase ●an elasticity phase Microcracking and interfacial failure may occur due to residual stress, or as a result of resin-based composite polymerization.
Degee, etc.: Quantitative determination of stress reduction by flow in composite restorations.
Online since: October 2014
Authors: Ming Kai Zhou, Zhan Ao Liu, Chu Kang Yao
Experimental data in Fig. 5(a) demonstrate that compressive strength decreases dramatically with increasing MBV when water content is increased under constant flow.
Moreover, compressive strength appears to have a negative linear relationship with MBV, which confirms that the reduction is directly related to the increase of water content.
However, this reduction is considerably limited as compared with the reduction in Figure 4(a), revealing compressive strength is remarkably reduced only when W/C is increased due to growing water demand, which contradicts with traditional academic views.
Online since: May 2007
Authors: Ki Bae Kim, Eric Fleury, S. Jayalakshmi
However, at the highest concentration, the reduction in strength was such that it was almost one-half the value of the non-hydrogenated specimen.
For the completely amorphous specimen, the reduction in elastic modulus was ~25% lower than that of the value observed for the one with ~ 40 at.% hydrogen.
Nevertheless, for Ti50Zr25Cu25 alloy, the magnitude of decrease in fracture strength is moderate, when compared with the earlier reported data of fracture strength on Zr- and Ti-based fully amorphous alloys [9,14], which could accommodate a maximum of upto ~43 at.% and ~41 Figure 2.
It involved the reduction in cohesion between metal atoms, brought about by the expansion of structure, due to hydrogen addition [9,14].
Online since: October 2009
Authors: Shigeru Suzuki, Balachamdran Jeyadevan, Kozo Shinoda, G.B. Chon, D. Kodama
To facilitate the formation of Fe-Co alloy nanoparticles, co-reduction/co-precipitation of iron and cobalt has to be realized.
It is known that in polyol process, the formation of metallic powders are realized by reduction of metallic ions through the oxidation of liquid polyols [10].
A general reaction scheme in polyol process has been proposed as dissolution of the solid precursor, reduction in solution, homogeneous nucleation and growth of the metallic phase from the solution and so on [10].
Oku for useful discussions relating to the diffusion of metallic atoms in the alloy and the interpretation of XPS data.
Online since: September 2013
Authors: Zeno Iosif Praisach, Gilbert Rainer Gillich, Carla Protocsil, Florian Muntean
Opposite to other authors, we consider the stiffness reduction at the location where the bending moment is maximum, afterwards weighting it for damages placed on other locations with the influence of energy stored in that location.
In all cases Eq. 1 accurate predict the frequency of the damaged beam by considering the effect of stiffness reduction calculated with Eq. 5 and using the deflection values from Table 1.
Additionally, our relation is valid for any cross-section shape, proved using data from Table 1, extending the availability of the frequency-based damage detection methods to beams with any cross-section shape and even made by composites.
Graphical representation for function γ(a/h) proposed by different authors Conclusions This paper introduces a mathematical relation who expresses the stiffness reduction in respect to damage depth, applicable to any beam structure.
Online since: September 2022
Authors: Věra Heřmánková, Pavel Černý, Eva Frimlová
Diagnosis may also be performed in a case when a reduction in the load capacity of a structure, caused by inappropriate maintenance or preventive works during the use of the structure, occurs.
Figure 1: Kučera’s drilling machine with an adapter and the original drill bits: a) prototype of components for assembly of reduction from 3D printer, b) flat drill bit mounted in the chuck, c) flat drill for wood, d) components for assembly of reduction, e) drills Kučera`s drill, which are used for mortar diagnostics (original) The overall modification of the Kučera’s drilling machine was based on the requirements of the attachment of a wood drill bit.
The calibration relationship for determining the strength based on the depth of a hole, which is not yet in the common practice, can then be found based on this data.
Online since: August 2017
Authors: Sabine Willscher, Juliane Wittig, Lukasz Jablonski, Denise Kuehn
In previous research work it was identified that phytoremediation evolves several positive effects onto the soil and groundwater of the contaminated site by stabilization of the soil cover and sequestration of heavy metals/ radionuclides (MM/R) and metalloids in the root zone, reduction of the seepage water formation (up to 65%) and minimization of the groundwater contamination with HM/R and metalloids by ≥ 90% [5].
In general, the addition of compost and sand as soil improvements demonstrated a positive result for the plant growth, which was in accordance with literature data.
The growth of the plants in combination with the soil amendments makes a high contribution to the reduction of seepage water formation (up to 65%) as well as to the reduction of the contaminant load of the leachate (≥ 90 % decrease) [5].
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