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Online since: June 2006
Authors: Gintas Viselga
The gantry module is positioned by a special positioning trundle and is run by a 12 V electric motor through a worm self - braking reduction gear.
It is run by a 12V electric motor through a worm self - braking reduction gear.
According to the experimental data of tramlines unevenness, a measuring and computer chassis simulation program was developed in the Matlab environment and we obtained positioning deviation results of PGM individual chassis run between positions' distances or the number of positions to permissible set position (Fig.2).
On the basis of the above-mentioned data we can maintain that positioning speed is a decisive factor for positioning precision.
Accuracy of positioning increases with the reduction of speed of movement chassis and with that of the connected forces of inertia of the gantry unit. 3.
Online since: March 2007
Authors: Liana M.F.G. de Lima, Angelo Fernando Padilha, Ronald Lesley Plaut, Nelson B. Lima
Finally, it was cold rolled with a 9% thickness reduction.
The 9% thickness reduction practically did not bring any microstructural modification at the optical microscopy level (Fig. 1a).
Figure 1: Optical microscopy of longitudinal section of the samples etched with 2% nital: a) cold rolled 9% thickness reduction; b) after cold reduction and annealing in a salt bath at 760ºC for 5 minutes; c) after cold reduction and annealing in a salt bath at 760ºC for 10 minutes; d) after cold reduction and annealing in a salt bath at 760ºC for 30 minutes.
The results clearly show the experimental difficulty related to the evaluation of the preferential orientation and its relation with the exaggeratedly grown grains using data coming from macrotexture, measured by X-ray diffraction.
Due to the high cold rolling reductions, grain boundary density is high so that there is a considerable amount of SIBM grains.
Online since: April 2015
Authors: Nurul Aimi Ghazali, Nur Hashimah Alias, Sawai Anak Jantan, Sitinoor Adeib binti Idris, Effah Yahya, Noorsuhana binti Mohd Yusof
The Chrastil model is used to correlate the experimental data.
The method of calculation the solubility data are by experimental and using Chrastil model [14] to correlate the data.
The process is done 3 times for each data and the oil yield is collected into the bottles.
To our knowledge, there is no previous reported solubility data for tamarind seed in supercritical CO2.
Then, all parameters value is determined through data regression.
Online since: July 2006
Authors: Krzysztof Jan Kurzydlowski, Tadeusz Wierzchoń, Wacław Pachla, Halina Garbacz
The reduction of grain size to nanostructure in titanium rods requires multistage extrusion with low reduction rates.
Diameter of the specimens φ[mm] Cross-section reduction True strain  φ12 → φ7,5 2,56 0,94 Table 1.
The calculated data also shows that HE process mainly resulted in an increase in the Sm parameter.
However, the technological data describing the process of hydrostatic extrusion are difficult to interpret.
This is because higher reductions in one hydroextrusion pass are possible.
Online since: August 2014
Authors: Marek Rybakowski, Paweł Bachman
Practical use of the proposed technical solution is a prolonged lifetime of the cutter and its blade, reduction of the risk of overheating due to friction of treated wood - which can lead to ignition of wood and wood dust, and therefore reduce the risk of occurrence of the accident, a fire or an injury.
The practical application of the proposed technical solution can result in prolonged lifetime of the chain saw, same blade, reduced risk of overheating due to friction piece of wood - which can lead to ignition of wood [9], quicker usage of the cutting blades [7], and therefore reduction of the risk of power failure, fire or the accident at work.
Pliers current sensor MASTECH MS3302 For the study the measurement system was used as shown in Figure 2 The signal voltage from the transformer was adjusted to a PC equipped with a data acquisition DacBoard 3000 and DasyLab program, in which was made the analysis of the signal.
Power consumption during bucking dry wood in the system with signalling the exceeding rate of current consumption Analysing the received waveforms of current consumption by the saw while it is running, it is possible to notice that once it starts cutting with a speed of about Vp = 0.08 m/s, in any case where the alarm was triggered, the operator reduced the feed rate of the material, so that was also a reduction in current consumption of the chain saw and power consumption was close to the nominal.
Reduction of dustiness in sawing wood by universal circular saw.
Online since: February 2024
Authors: Wan Norlinda Roshana binti Mohd Nawi, Nor Haleeda binti Mudzarol
For CCUS technology to be widely used, more accurate evaluation work based on geological, geophysical, geochemical, rock mechanical, and other data should be done. 
Illustrated Case Study The CTS-PTA is tabulated using secondary data from a variety of sources.
Table 1 shows the CO2 data sources (S) and demands (D).
The algebraic targeting approach was used on secondary data to assess the potential CO2 utilisation management by meeting CO2 demands at different purities.
The use of this innovative approach resulted in a 47% reduction in CO2 storage.
Online since: May 2013
Authors: Xuan Li, Na Bai, Zhan Fang Wu
The proposed scheme utilizes a new leakage current compensation circuit, resulting in a 42.9% reduction in the delay from bitline discharge to the date been read out.
Introduction With the increasing need of fast access and transfer data in PC, network and mobile communications, the demand for high-performance SRAM is increased significantly.
As shown in Fig. 8, the time during which the bitline starts to discharge to the data needed been read out by the proposed current SA is only 161ps.
Fig. 9 The corresponding histogram of the delay comparison As shown in Fig. 9, in the proposed design, the time needed to read out the required data can be reduced significantly.
Furthermore, as the parasitic capacitance increases, the delay reduction degree is also enlarged making the proposed design to be more effective.
Online since: March 2009
Authors: Tomaž Kosmač, Sebastjan Perko, Mariusz Andrejczuk
Soft grinding of the biscuit-sintered samples resulted in a noticeable increase in the surface roughness, also leading to a significant strength reduction.
These data were used to produce compacts with a green density ranging from 48% TD to 52% TD.
As shown in Fig.6, the grinding of biscuit-sintered pellets resulted in a noticeable strength reduction of the sintered Y-TZP ceramics, indicating that strength-controlling surface flaws must have been introduced during this mechanical operation.
Clearly, the deeper the grinding-induced surface flaws, the higher will be the strength reduction, but no direct relationships between the surface roughness and the strength reduction were found.
Regardless of the diamond-grit size used in soft grinding, this mechanical surface treatment resulted in a noticeable reduction in the strength.
Online since: January 2013
Authors: Yong Chen, Long Li, Jian Hua Zeng, Da De Zhang
The research results show that the amount of slag adhesion decreases with a reduction of SiO2 content and an increase of Al2O3 content in slag, owing to larger viscosity and higher foam index of molten slag.
CaO/(SiO2+Al2O3) ∧th Density / gcm-3 0 2.7 0.823 3.10 1 2.4 0.813 3.12 2 2.2 0.812 3.17 3 2.1 0.811 3.18 4 1.9 0.808 3.22 5 1.7 0.798 3.23 As seen from Table 3, both ∧th and ratios of CaO to (SiO2+Al2O3) of No. 0 to No. 5 slags decrease with a reduction of SiO2 content and an increase of Al2O3 content in slag, but the density of No. 5 slag is largest and the density of No. 0 slag is smallest, due to the density of Al2O3 is higher than that of SiO2.
As depicted in Fig. 2, the viscosity of molten slag tested increases in order No. 0 to No. 5 as a result of a reduction of SiO2 content and an increase of Al2O3 content in slag facilitate to form fewer SiO44- tetrahedral, and more Al (1/2Ca2 +) O44- tetrahedral structure, nevertheless, the total amount of both structure increase with an increase of SiO2 + Al2O3 contents in slag and further polymerize to chain or network units, resulting in an increase of viscosity of the melt.
Due to a negligible difference of σ0.2×Db0.9 of molten slag tested at 1600℃, the ratios of foam index of No.1 to No. 5 slags to that of No. 0 slag is shown in Figure 3, according to calculation of equation (1) by using the data from Table 3 and Fig. 2.
Conclusions Under conditions of slag sticking to MgO-C brick at 1600℃ in Ar atmosphere, the amount of slag adhesion decreases with a reduction of SiO2 content and an increase of Al2O3 content in slag, compared to that of normal BOF slag.
Online since: September 2011
Authors: Ya Zhang, You Liang Mao
Carbon Emissions Measure and Trend Data Resources and Measure Means This paper applies the energy data in Yunnan Statistical Yearbook (1998 to 2008).
The carbon calculation uses an average carbon emission coefficient according to the second best choice of statistical data.
Energy consumption carbon emission is worked out according to IPCC carbon emission calculation guide combined with characteristics of Yunnan’s statistical data.
Yunnan’s carbon emission coefficient of major energy consumption roots in default value of IPCC carbon calculation manual with an original data in J.
The data was in completely accordance with the above carbon emission structure.
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