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Online since: April 2011
Authors: Gou Sheng Liu, Xian Zhi Duan
In addition, phosphorus pentoxide, which is produced from yellow phosphor ore by a dry process, has an industrial disadvantage that this high-temperature reduction consumes a large quantity of energy and yields large quantities of industrial wastes as by-products.
Fig. 1 XRD spectra of Pass ammonia 0.5ml/min Fig. 2 XRD spectra of Pass ammonia 1.0 ml/min Fig. 3 XRD spectra of Pass ammonia 1.5 ml/min Fig. 4 XRD spectra of Pass ammonia 2.0 ml/min By comparison of the XRD patterns as shown in Fig.1, Fig. 2, Fig. 3, Fig. 4 and data listed in table 1, it was found that when ammonia speed was 0.5ml/min, the characteristic peaks of crystalline form II at 2θ/º(14.64º,15.47º,20.07º,22.11º,29.11º,30.56º,32.72º,36.50º)was occurred, meaning ammonia speed of 0.5ml/min was suitable for preparation of ammonium polyphosphate with crystalline form II.
Table 1 XRD comparison of products and V-APP/II in literature Ammonia speed 1.5mL/min Ammonia speed 2.0 mL/min Ammonia speed 2.5mL/min d/Å 2θ/º I/% d/Å 2θ/º I/% d/Å 2θ/º I/% 6.85 12.90 21.5 6.80 12.99 36.1 6.85 12.90 27.9 5.71 15.50 100 5.56 15.9 100 5.60 15.80 100 5.61 15.77 65.1 3.65 24.3 36.2 5.30 16.70 17.2 3.42 26.02 37.4 3.40 26.13 51.7 3.67 24.20 29.6 3.07 29.04 24.0 2.80 31.90 25.0 3.41 26.04 48.4 Ammonia speed 0.5mL/min Ammonia speed 1.0mL/min II-APP standard value d/Å d/Å d/Å d/Å 2θ/º I/% d/Å 2θ/º I/% 6.01 14.71 6.01 6.83 12.90 27.9 6.06 14.69 55 5.69 15.54 5.69 5.60 15.80 100 5.70 15.52 100 3.47 25.64 3.47 3.67 16.70 17.2 3.37 26.09 37 3.41 26.08 3.41 3.41 24.20 29.6 3.08 29.14 45 3.05 29.16 3.05 2.80 26.04 48.4 2.93 30.59 25 By comparison of d/Å, 2θ/º and I/%, as shown in table 2, it was found that, in all of the 8 characteristic peaks, most of the data were in good agreement with crystalline form II, meaning low ammonia speed was suitable for preparation of ammonium polyphosphate
Online since: September 2012
Authors: Ya Wen Yan, Xin Zhong Lu, Ji Xian Meng, Yi Jia Lu
So we have the reduction (4) (5) Finally, we take the conditional distribution to obtain our fundamental mathematical result: (6) give out the probability density ,high values for indicate that Z is a likely anchor point of crime series; low values indicate z is a less likely anchor point.
The data are listed in Table 1.
The data are listed in table 2.
Online since: October 2012
Authors: Wei Jun Yang, Hai Dian Zhang, Ning Guo
Fig.6 The principal tensile stress of the model 2 (set the sill ring beam) Fig.5 The principal tensile stress of the model 1 (no sill ring beam) By contrasting the data in the graph and in the models, results are shown in the following Table 2.
Table.2 Data contrast Model With/ Without Ring beam Ring beam size Reinforcement ratio of the ring beam The tensile stress on the wall above the sill The tensile stress on the wall under the sill Model 1 NO Model 2 YES 240mm×100mm 1.0% Reduced 13.0% than model 1 Reduced 21.0% than model 1 Model 3 YES 240mm×100mm 3.0% Reduced 15.0% than model 1 Reduced 24.0% than model 1 From the calculation results, under temperature load, the tensile stress is greater at the joint of roof and wall and decreases gradually downwards.
Sill ring beam reinforcement ratio should be controlled within 1.0% as the continuing increase of the reinforcement ratio helps little with the reduction of the temperature stress.
Online since: February 2014
Authors: Heru Setyawan, S. Ni Made Intan Putri
The data obtained after the measurements were analyzed using NOVA software.
On the other hand, the reduction of the Rpore value could be related to an increasing in pore area offering a low resistance to the electron transfer in the base of the pore [6].
The parameters of circuit model that fitted the data in Fig. 1 The effect of amplitude on the characteristics of silica film.
Online since: April 2014
Authors: Jian Gang Yi
From the base of the production line balance, with continuous optimization, costs reduction, quality and service improvement, enterprises should gradually enhance the competitiveness, thereby occupy a space in international market competition [3].
Table 1 The Data before Optimization No.
Name Waste time (s) 1 Fold page 2.5 2 Bundle 4.6 3 Arrange books 3.8 4 Bind 3.4 5 Fold port 3.9 6 Cut books 4.1 7 Check 4.7 8 Pack 4.2 Table 2 The Data after Optimization No.
Online since: December 2010
Authors: Ming Gao, Fa Chao Wu
Meanwhile, heat release is distributed between two broad peaks covering a wide area, resulting in a major reduction in rate of heat release.
These data suggest that the combustibility of the treated cellulose is decreased.
Analytical data for cellulose and cellulose treated with flame-retardant.
Online since: December 2012
Authors: Mahdi Maarefdoust
Tables 1, 2 show the software’s input data, including type of press, materials of piecework and die.
The characteristics of used crank press [3] Crank radius(R) Rod length(L) Revolution 70(mm) 520(mm) 90(rpm) Table 2 The used input data [3] Billet Material Die Material Die Temperature Press kind Ambient Temperature Din 1.1191 Din 1.2765 Crankshaft press Crank press is used for analyzing this piece, and coefficient of friction is considered to be 0.3.
The simulation of forging process was performed in three stages, in the first stage the height reduction process was applied to the work piece and in the second and third stage the final forming was performed.
Online since: December 2012
Authors: Fang Zheng Xie, Bao Xia Zhang, Cheng Xiao, Xin Song
Figure 1 NGW Planetary Gear Reduction Working principle of deceleration electric wheel The overall structure of this electric wheel is shown in Figure 2.
Score prediction method Score prediction method is used when the reliability data is lack except the data of individual unit.
Online since: January 2013
Authors: Jin Chen, Zhong Qi Dong, Jun Suo Li
Introduction As a result of CSP production line single reduction ratio, rolling load in high technology characteristics, leading to the traditional roll material existing in the use of the poor wear resistance, fracture, Work Roll Spalling of roll surface and the ability of accident prevention is low problem [1-3].
Through a comprehensive statistical analysis of CSP production line of work roll after the roll surface roughness, the temperature of the roll surface, roll wear, the production process as well as the roll microstructure analysis data, discover the cause of work roll wear resistance and anti accident ability low main reason and roll carbide morphology and alloy content.
The experimental data show that, due to the high speed steel special microstructure, the friction coefficient high chromium material increased (about 3%-5%).
Online since: February 2015
Authors: Zhao Hui Huang, Zhen Ya Chen
However, usually, the underground condition is always complicated; data of density logging is highly affected by environment like the gap between instruments and the wall, the nature and gravity of mud, mud cake, debris, mud invasion, etc.
In MCNP, the neutron energy range is from 10MeV to 20MeV, photon and electron energy range is from 1KeV to 1000MeV, as well, the program using a unique surface geometry combination and point section data.
Establish variance reduction methods to minimize consuming machine time. 2.
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