Search Options

Sort by:

Sort search results by

Publication Type:

Publication Type filter

Open access:

Publication Date:

Periodicals:

Periodicals filter

Search results

Online since: December 2008
Authors: Jochen Linke, C. García-Rosales, I. López-Galilea, Gerald Pintsuk
A pyrometer and an infrared scanner were used to provide data on the resulting temperatures at the surface (Tsurf).
In contrast, a significant reduction of particle emission takes place under the same shot conditions for the Ti-doped graphites, both with Si (ATS) and without Si (AT1 and AT2), and only medium and small dust particles were detected.
The differences between the doped graphites seem not to be relevant, taking into account the scatter of the data in figure 2.
This explains that the strong reduction of brittle destruction und high thermal shock loads.
Online since: April 2012
Authors: Suzana Yusup, Sohail Ahmed, Anita Ramli
Sayari and Yang [14] have reported that decrease in d-spacing is representing a significant reduction in pore size.
The data obtained from N2 adsorption-desorption of mesoporous materials is shown in Table 2.
From the N2 adsorption-desorption data, it was found that as the synthesis duration increased from 2 to 10 days, pore size and pore volume decreased.
This reduction in wall thickness was suggested due to contraction of bonding atoms due to longer heating time.
Online since: September 2007
Authors: Takeshi Ohshima, Gerhard Pensl, Hisayoshi Itoh, Sergey A. Reshanov, Alexander Mattausch, Frank Schmid, M. Bockstedte, Oleg Pankratov, Heiko B. Weber
Åberg et al. [4] observed a reduction of the free electron concentration in N-doped 4H-SiC epilayers after implantation of different ion species.
A microscopic model for the N donor deactivation mechanism is proposed, which is based on our theoretical analysis taking into account the kinetic processes for the formation of N interstitial clusters and (N-vacancy)- complexes; this model is in full agreement with the experimental data.
The symbols in Fig. 1 correspond to the experimental data and the solid curves are least-squares-fits of the neutrality equation to the experimental points; for details of the fit procedure and for the material parameters used, see Ref. 6.
Annealing temperature Ta (°C) 200 500 800 1100 1400 1700 Defect concentration (cm-3) 1014 1015 4H-SiC E(e-)=200 keV Z1/Z2 P1 (a) (b)the observed deactivation of N donors and reduction of compensating intrinsic defects.
Online since: April 2013
Authors: Markus Bambach, Gerhard Hirt, Holger Voswinckel
Tab. 1: Data sheet for mild steel DC04 Material: mild steel DC 04 (1.0338/ St14O3) Mechanical Properties  Density r Yield strength Rp0,2 Tensile strength Rm Elongation A80 7,85 kg/dm² 140 - 210 N/mm² 270 - 350 N/mm 38 % Chemical Composition (in weight %)  Element: C Mn P S Max: 0,08 0,4 0,03 0,03 Incremental flanging For the analysis of the technological potential of incremental flanging operations and to set up the general process window the influences of tool path strategies (I), flange length (II) and flange radii (III) are analysed with respect to material failure and flange geometry.
The major aspect therefore was to analyse not only the failures can be prevented but also if the bulge can be minimized by a reduction of the flange length.
In fact an extensive reduction of the bulge height for shorter flanges could be verified for the chosen parameters.
To analyse the limitations for incremental stretch and shrink flanging it is mandatory to gain experimental data with varying length and radii.
Online since: December 2024
Authors: Duangdao Aht-Ong, Rachan Lueangkrathok, Kamonwan Pacaphol
The data obtained from this study could be exploited to develop BNC film in various applications.
This result might be caused by the reduction of fiber length that randomly dispersed and the increase in suspension’s homogeneity between nanofibers and water medium (Figure 1(b)), leading to higher light scattering and less light transmittance.
DSC data in Table 1 show Tg, Tm (the melting of BNC crystalline phase), and Td of BNC samples after casting to be a film.
Additionally, the results implied that the decrease in the fiber’s diameter size did not result in mechanical property reduction since the fiber’s diameters of the BNC1.0-40 sample were smaller than others.
Online since: June 2016
Authors: Victor Egorov, Nguen Huang Manh, Andrey Nikolaevich Rementsov
Where: - СprΣ - component determined by the costs of working and non-working posts in enterprises, as well as on buses staying at posts and in queue, - Z1 - component determined by the movement of buss to a parent(main) enterprise for work on MTO /due to the loss of time and fuel/, - Z2 - component determined by the difference between the moving buses (or removed units) to a parent(main) enterprise instead of having repairing work on its own enterprise / due to the loss of time and fuel/, - Z3 - component, defined capital costs for the creation/upgrading of posts, - Z4 - component defined by the reduction in the value of the stored spare parts /specific to the average time of turnover/, νijl – the part of failures of type "j" from the company № i sent to the main company № l, νilТО – the part of maintenance work from the company № i sent to the main company № l , nij – taken number of posts of «j»-th specialization on the enterprise № «i», nij0 – start number of posts of «j»-th
It was necessary to find a rational approach to certain assumptions to solve the above problems: - selecting those companies that will be considered as the main, they will be converted under the posts specialization and create new positions; - in the analysis and processing of statistical data on repair works at PTB in the enterprise network were defined some groups of TS work within which it is possible to allocate repair of complex and small.
Summary Using the above mathematical model of a network of public transportation enterprises, with the known data of the existing enterprises in Hanoi, we can get the following results: - Varying the values of parameters entering into the above model, we can determine the structure of the network and its member companies so as to obtain the minimum value of the cost for execution works on TS and maintenance of buses in all enterprises for the public transport network.
At the same time, the coefficient of readiness of bus fleet will rise, thus the buses job on the line will not be interrupted, which resulting in satisfaction of the urban population in the transportation and cost reduction (or increase the profit of the enterprises).
Online since: September 2021
Authors: Marina A. Akulova, Baizak R. Isakulov, Berikbay B. Kul’sharov, Abikhabir B. Isakulov, Alla G. Sokolova, Yulia A. Sokolova
Physical and chemical properties of cotton plant, its chemical composition and fractional make-up are determined by laboratory testing in compliance with the GOST 19222, GOST 25820-2000, as well as reference and literatory data [1 - 22]. 5.
Therefore, the contraction process ovelapped the creep process that exacerbated the analysis of the experimental data.
Thus, if compared with porous lightweight concretes, creep of porous arbolit is significantly lower that leads to the reduction of creep deformation while maintaining the same stress level.
At the age of 28 days, the deformation curves are changed, there observed reduction of mortar fraction deformation due to the strength growth of sulfur-containing arbolit (fig. 2).
Online since: January 2014
Authors: Zhi Li, Shao Rong Zhang, Ai Jun Zhu
Data processing module provides PWM duty ratio counts for DAC controller.
We use inner ROM of FPGA to build DAC data sheet.
Data processing module is the core part of the whole system.
A difference between maximum data and minimum data is calculated in a group of data at first time.
And if the difference is in normal range, we should compute the mean value of the group of data and get the current output voltage data.
Online since: July 2012
Authors: Zheng Mao Liu, Guang Liang Xia, Zhi Ke Chen, Ting Ting Sun, Pai Liu, Chao Du, Chao Qing, Ya Shan Song
Data sources.
Hydrological data were the water flow data from Baoqing hydrometric station during 1956~2005.
The land use/cover change data is extracted from literature (SONG, 2008).
Data analyses.
Data were processed using Matlab 6.5, and Excel 2003 software.
Online since: August 2004
Authors: Fanny Balbaud-Célérier, Laure Martinelli, A. Ngomsik, S. Sanchez, A. Terlain, Gerard Picard
The need to determine physicochemical data in these models is also described.
Second, few and uncertain data, restricted to the 550°C-780°C Fig. 3.
Determination of iron physicochemical data in liquid Pb-Bi.
More data must be gained to confirm these results.
However, data, such as solubilities and diffusion coefficients of metallic species are necessary to use these models.
Showing 21901 to 21910 of 40694 items