Search Options

Sort by:

Sort search results by

Publication Type:

Publication Type filter

Open access:

Publication Date:

Periodicals:

Periodicals filter

Search results

Online since: October 2010
Authors: Priciane Martins Parreira, Humberto Molinar Henrique
Theoretical approach and experimental setup were validated by using the actual data from thermal decomposition of limestone.
This reaction is well known in the industry and real data on this process are available for comparison with simulation data obtained from proposed approach.
Data of DHf, DGf and Cp for the chemical species present in this reaction are given in Table 2 [3].
Table 2: Data of DHf ,DGf and Cp(*) of CaSO4, CaO , SO2 and O2.
Experimental data from calcination of phosphogypsum were also obtained.
Online since: September 2011
Authors: Chao Li, Yu Lan Wang, Hong Zhi Yang
Then carry out the fuzzy cluster analysis of the sample data
(3) Get new data matrix through deleting condition attribute from condition attribute set .
Use the law of range transform to standard basic data
“A fuzzy clustering algorithm based on fuzzy distance norms for asynchronously sampled data.”
“New heuristic attribute reduction algorithm based on rough set.”
Online since: March 2014
Authors: Gui Sheng Yin, Xiang Cui
But rating data is maybe sparsely sometimes.
Typically, uncertain data of user appear in abundance for various reasons, such as user interest data, causing the output of result of recommend inaccurately which is based on computing those input uncertain data.
Logs take down the data that have uncertain features.
Consequently, user interests data recorded in computer logs is uncertain data, as uncertain interests.
In order to more suitable for testing the algorithm, we deal with the data and increase some attributes data.
Online since: September 2003
Authors: Ce Wen Nan, Y. Dai, X.M. Pei
At present, commercial AlN powders are synthesized via either carbothermal reduction or direct nitridation of aluminum [2-3].
Other methods have also been reported on the laboratory-scale production of AlN powders, e.g., the decomposition of organometallic compounds, the reduction and nitridation of the aluminum polynuclear complex, chemical vapor decomposition, plasma synthesis and self-propagation high-temperature synthesis [4-8].
The DTA data together with weight changes of Al/C mixture (sample J1 ) as a function of temperature are shown in Fig.4.
The initial raw material composition, i.e. the composition ratio 0 200 400 600 800 1000 1200 1400 1600 0 10 20 30 40 1399¡æ 1084¡æ 663¡æ Temperature /¡æ DSC /mW/mg 60 80 100 120 TG /% Fig. 4 Weight changes and DSC data of the sample J1 of Al/C, is the key factor to control the morphology of the nitrided products.
Online since: March 2014
Authors: Anton A. Gnidenko
Nanopowders of WC with grain sizes less than 100 nm became the subject of active research in recent years [2,3], due to the significant roles of grain-size reduction played in the enhancement of mechanical properties of WC-Co hard alloys.
It had been shown that the grain size reduction from about 4.8 µm for the polycrystalline cobalt to 12 nm for the nanocrystalline cobalt increased the tensile strength from 0.81 GPa to 1.86 GPa [9].
Structure Parameter Experimental data [14-17] Present calculation hex-WC a c B 2.906 [Å] 2.839 [Å] 329-443 [GPa] 2.914 [Å] 2.836 [Å] 383 [GPa] hex-Co a c B 2.507 [Å] 4.069[Å] 182 [GPa] 2.515 [Å] 4.072 [Å] 206 [GPa] Results and Discussions In our previous calculation [7] it had been shown for the (0001) and (1010) W-terminated surfaces that the bonding between the cobalt layers and the WC surface becomes much stronger at the second cobalt monolayer formation.
Thus, we received a qualitative agreement with the experimental data – thickness increasing of the cobalt layer leads to decreasing of tensile strength.
Online since: November 2013
Authors: Li Chun Wu, Ying Chien Chung, Hsin Hui Wang, Chi Huang
Data were recorded digitally on a personal computer by the interface card (Model PCI-488 Keithley Instruments Inc.) every minute counts.
The anode medium used showed a couple of distinguishable oxidation-reduction peaks: the oxidation peak in the forward scan at -0.1 V (vs.
Ag/AgCl) and the reduction peak in the reverse scan at -0.4 V, this could be the evidence of the mediator contained in the used anode medium.
By HPLC analysis, riboflavin was suggested as possible compound (data not shown).
Online since: January 2013
Authors: Jie Du, Ya Tong Guo, Zhu Zheng, Zhen Qi Hou
The determined data are listed detailedly in Table 1.
Obviously, it could be observed that the crystalline peaks became relatively weak with the increased MD content, which demonstrated that the introduction of irregularity caused a reduction in crystallinity.
The TG data in Table 1 showed that Td rose with the increased mesogen content, which was thought to be ascribed to the introduction of the more thermally stable aromatic units.
Weight loss could be caused by the hydrolysis of ester linkages, followed by the subsequent reduction of molecular weight, to result in water-soluble oligomeric and/or monomeric products.
Online since: February 2013
Authors: Ming He Chen, Chao Zhang, Jian Chao Feng, Li Ming Guo
By using the data of certain factory, the limited value of original bending curvature is 1/300mm.Table1 shows the relevant parameters of the Tc4 material by consulting the China Aeronautical Materials manuals.
Large deformation strategy mainly relies on the empirical data.
Summary (1) Intermeshes are decreasing distribution at same temperature with small deformation strategy, and the higher the temperature the smaller the reductions
(2) Intermeshes of straightening roller 2#,4# are relatively large and 6#,8# are relatively small under at same temperature with large deformation strategy, and the higher the temperature the smaller the reductions
Online since: January 2013
Authors: Takeshi Iwamoto, Daiki Inoshita, Shiro Yamanaka
For automotive industries, reduction in thickness of shock absorption members can be realized if TRIP steel can be applied to them.
This advantage is connected to weight reduction of automobiles and improvement of fuel consumption may be expected.
A signal conditioner is used to amplify voltage signal and a data logger is used to acquire the data.
Online since: March 2012
Authors: Zhen Xing Kong, Zi Lin Dai, Gui Ying Li
Since dispersion of clay platelets in polymer can result in a reduction of moisture absorption, thermal stability, as well as significant enhancements of modulus, strength, and hence the overall enhanced performance of nanocomposites, many researchers have performed investigations in the new field of polymer/clay nanocomposites [2].
b a Fig. 3 Effect of organoclay loading on the nanocomposite flexural properties: (a) Flexural strength versus organoclay loading; (b) Flexural modulus versus organoclay loading Mechanical data revealed that the flexural strength of both nanocomposites first increased with augmenting organoclay content up to 3 wt% and then decreased (Fig. 3 a).
The reduction of flexural stength is probably due to the stress concentration resulted from larger and larger agrregates with further addition of clay content [8].
From the measured data of flexural strength and modulus of both nanocomposites, the organclay containing polymerizable terminal pendant group, MHAB-MMT, was found more effective to enhance the mechanical properties of nanocomposites than that containing unpolymerizable terminal pendant group.
Showing 11991 to 12000 of 40694 items