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Online since: December 2013
Authors: Shan Shan Zhang, Ji Hua Wang
The Application of Microbes in Petroleum industry Jihua WANG 1, a, Shanshan ZHANG 1 1College of Life Science and Technology, Harbin Normal University.
Introduction Microbial widespread in nature, and based on a wealth of resources on the basis of microbial bio-technology matures, such microbial technology is increasingly being applied to various industries, which will contain the oil industry [1].Microbial technology in every aspect of the oil industry wide application, promote the development of the oil industry, the development of the oil industry has an important significance.
And also it is a complex mixture composed of hydrocarbon and non-hydrocarbon [3].Alkyl group can be subdivided into the oil, intermediate base oil, naphthenic oil, aromatic oil; the balance oxygen, nitrogen, sulfur, non-metallic impurities such as hydrocarbons and hydrocarbon derivatives [3].Hydrocarbon material components shown in Table 1.
References [1] Yang Xu, Xu Kewei, Liu He, et al.
SPG Gaophysical References Series, 2002,11:453-479
Online since: November 2014
Authors: Siti Nur Umira Zakaria, Erwan Sulaiman
Gases produced by vehicle should be controlled and proactive measures should be taken to minimize these emissions [1-2].
Fig. 1 shows the initial and improved design specification of 6S-14P E-Core HEFSM.
The improved design shown in Fig. 1(b) has successfully achieved the maximum power of more than 123kW.
References [1] Anil Kumar Yadav, Prena Gaur, Shyama Kant Jha, J.R.P.
D (2006() 473-479
Online since: October 2015
Authors: Xiu Hua Ma
Introduction Valves are one of the most important parts in ultra-high pressure systems, where the reliability, safety, working efficiency and service life of valves directly influence the working of the entire system [1].
It is deemed that the entire cylinder consists of the following two parts: elastic range and plastic range, as indicated in Fig 1.
Fig4 Curve of change of maximum stress with autofrettage pressure when valve body is working Fig3 Diagram of Valve Body Critical Yield Pressure Fig6 Change of Maximum Residual Equivalent Stress after Autofrettage Pressure is Discharged Fig5 Change of Elasto Plasticity Radius of Valve Body at Autofrettage Pressure Conclusion (1) When determining the maximum value of autofrettage pressure, the maximum pressure, at which reverse yield does not happen, and the complete yield pressure shall be taken into consideration, with the smaller value of the two taken after comparison and analysis.
References [1] M.Q Li, M.L Duan: Journal of Machine Design, Vol. 28 (2011) No.9, PP.79-82.
(In Chinese) [11] L.Y Qian, Q.K Liu:Chinese of Mechanical Engineering, Vol. 23 (2012) No.2, pp.474-479.
Online since: March 2013
Authors: Ji Tan Guo, Song Feng Li
In 2000s, 1300t and 1600t un-rotational floating crane [1, 2], and 4000t rotary non-self-propelled floating crane [3] had been successfully exploited in China.
To study how the structure of slewing bearing effects on force distribution, three kinds of structural schemes are put forward respectively, as shown in Fig. 1.
No.C Figure 1.
References [1] Ying Shen, Yuemin Wang.
Mechanism and Machine Theory, 2003, 38:479-496
Online since: May 2012
Authors: Zu Xiang Hu
(1) Constituted the n × p order matrix by all : (2) It is called the reaction matrix.
For example to qinan mine, Combine with the actual hydraulic extrusion process Shown in Figure 1.
Table 1 Characteristics of the response matrix table yi x1 x2 x3 x4 x5 x6 x7 x8 x9 c11 c12 c13 c21 c22 c23 c31 c32 c33 c41 c42 c51 c52 c61 c62 c71 c72 c81 c82 c91 c92 65 1 0 0 1 0 0 1 0 0 1 0 1 0 0 1 1 0 0 1 1 0 74 1 0 0 1 0 0 1 0 0 0 1 0 1 1 0 1 0 1 0 0 1 124 0 0 1 0 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 85 0 1 0 1 0 0 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 96 1 0 0 0 1 0 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 150 0 0 1 0 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 47 0 1 0 1 0 0 1 0 0 0 1 1 0 0 1 1 0 0 1 0 1 119 0 0 1 0 1 0 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 73 0 1 0 0 1 0 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 120 0 0 1 0 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 79 0 0 1 0 1 0 0 0 1 0 1 1 0 0 1 0 1 0 0 1 0 83 1 0 0 1 0 0 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 148 0 0 1 0 0 1 0 0 1 1 0 0 1 0 1 0 1 0 0 0 1 78 0 1 0 0 0 1 1 0 0 0 1 0 1 1 0 1 0 0 1 0 1 50 0 1 0 0 1 0 1 0 0 0 1 1 0 0 1 0 1 0 1 1 0 76 1 0 0 0 0 1 1 0 0 0 1 1 0 1 0 0 1 1 0 0 1 121 0 0 1 0 1 0 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 64 1 0 0 0 1 0 0 1 0 1 0 1 0 1 0 0 1 1 0 1 0 95
1 0 0 0 0 1 0 0 1 0 1 1 0 0 1 1 0 1 0 0 1 127 0 0 1 0 1 0 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0 4) The establishment of prediction equation According to Table 1 and Equation (7), Get prediction equation for the displacement of coal after the hydraulic squeeze
Table4 The intuitive analysis table of test results factor index A B C D E water pressure (MPa) water flow (m3/min) water time (min) drilling depth (m) sealing depth (m) K1 395 395 405 452 388 K2 382 415 429 452 412 K3 480 463 463 438 480 K4 502 486 462 417 479 k1 98.75 98.75 101.25 113 97 k2 95.5 103.75 107.25 113 103 k3 120 115.75 115.75 109.5 120 k4 125.5 121.5 115.5 104.25 119.75 R 120 91 58 35 92 Good level A4 B4 C3 D1orD2 E3 Sort of factors 1 3 4 5 2 From the table 4 we can know the sort of factors, which is RA>RE>RB>RC>RD. there are three factors play a key role Improving the water effect,such as water pressure, sealing depth and water flow.
Online since: September 2011
Authors: Ying Wang, Xin Yang Li, Ming Zhang
CFT-1 was not able to develop plastic capacity of beam due to precocious weld fracture.
Story drift angle was kept within 1/200 under the design load.
Fig.6 Framing Elevation Fig.7 Framing Floor Plan Table1 Column Members List of Steel and CFT Structure of 18-story Building Steel structure CFT structure Story Dimension [mm] Mu [kN·m] As [cm2] Dimension [mm] Mu [kN·m] As [cm2] 17-18 H -300×300×9 224 105 H-250×250×6 223 59 15-16 H -300×300×19 381 214 H-300×300×12 479 138 13-14 H -450×450×25 1138 425 H-400×400×12 889 186 11-12 H -450×450×28 1212 473 H-500×500×12 1431 234 9-10 H -650×650×25 2654 625 H-550×550×12 1750 258 7-8 H -700×700×22 2799 597 H-600×600×12 2100 282 4-6 H -750×750×19 2943 556 H-650×650×12 2483 306 1-3 H -750×750×22 3355 641 H-700×700×12 2898 330 Table2 Beam Members List of Steel and CFT Structure of 18-story Building Steel structure CFT structure Story Dimension [mm] Mu [kN·m] As [cm2] Dimension [mm] Mu [kN·m] As [cm2] 17-18 H-466×199×8 283 83 H-350×150×9 327 87 15-16 H-450×200×9 344 95 H-450×200×6 406 77 13-14 H-390×300×10 457 133 H-450×200×6 406 77 11-12 H-606×201×12 685 150 H-500×200
Table3 Story Drift Angle of Steel and CFT Structure of 18-story Building under Seismic Load Story CFT S Story CFT S X Y X Y X Y X Y 18 1/260 1/269 1/259 1/264 9 1/290 1/297 1/246 1/269 17 1/252 1/262 1/250 1/257 8 1/294 1/300 1/244 1/266 16 1/248 1/262 1/245 1/255 7 1/289 1/294 1/240 1/259 15 1/245 1/264 1/242 1/257 6 1/284 1/290 1/236 1/254 14 1/249 1/273 1/245 1/263 5 1/281 1/285 1/235 1/250 13 1/253 1/273 1/246 1/260 4 1/282 1/284 1/239 1/249 12 1/261 1/278 1/246 1/260 3 1/282 1/291 1/251 1/255 11 1/270 1/282 1/245 1/264 2 1/323 1/307 1/283 1/270 10 1/280 1/289 1/247 1/271 1 1/426 1/373 1/388 1/329 Table4 Cost Comparison of Steel and CFT Structure of 18-story Building frame Structure type CFT S CFT/S Steel [t] 993.12 1606.26 0.62 Concrete [m3] 1302.83 ---- ---- Weight of structure [t] 4122.82 1606.26 2.57 Cost of material [$] 948,521 1019,975 0.93 Cost of weld and PC bar [$] 51,890 64,991 0.80
Vol. 1(2001), p.33 [2] H.Okamura, K.Ozawa and M.Ouchi: Self-compacting concrete.
Online since: August 2013
Authors: Hai Fan, Bao Shan Wang, Ling Li, Xu Yun, Guo Hua Meng, Ran Ran Cheng
Abstract: Seedlings of sweet sorghum were supplied with 0.1 mmol L-1, 2 mmol L-1, 5 mmol L-1 and 10 mmol L-1 nitrogen fertilizers under 0% or 0.6% NaCl conditions.
After that the plants were cultured in green house at 35℃/25℃ (day/night), 60%RH and 1000 μmol photon m-2S-1, and irrigated daily with nutrient solution of different nitrogen levels (0.1 mmol L-1, 2 mmol L-1, 5 mmol L-1 and 10 mmol L-1 nitrogen).
The PAR was 1000μmol m-2S-1.
As was shown in Fig.1 and table 1, 0.6% NaCl significantly reduced its fresh weight and dry weight.
Assimilation and allocation of carbon and nitrogen of thermal and nonthermal Agrostis species in response to high soil temperature. 170(3):479-490. (2006) [5] RJ Strasser, M Tsimilli-Michael and A Srivastava.
Online since: March 2014
Authors: Xiu Li Fu, Yan Xu Zang, Zhi Jian Peng
And the atomic ratio of Y and Sb in the mixture of Y2O3 and Sb2O3 are designed as 0, 1:5, 1:2, 1:1, 2:1, 5:1 and ∞.
When it increased up to 1:1, except the dominant ZnO phase, Y2O3 phase would appear, the spinel phase disappear, and an Y-Sb-O phase could also be detected.
(d) (c) (b) (a) (f) (e) (h) (g) Fig. 2 Typical SEM micrographs of samples with different ratios of Y:Sb: (a) 0, (b) 1:5, (c) 1:2, (d) 1:1, (e) 2:1, (f) 5:1, and (g) ∞.
References [1] F.
Mater. 368-372 (2008) 479-482
Online since: March 2011
Authors: Giuseppina Ambrogio, Luigino Filice, Francesco Gagliardi
Table 1: The preliminary experimental campaign.
Table 3: The 2k-1 fractional factorial experimental plane
# A B C D 1 -1 -1 -1 -1 2 -1 1 1 -1 3 1 1 -1 -1 4 1 1 1 1 5 -1 -1 1 1 6 1 -1 1 -1 7 1 -1 -1 1 8 -1 1 -1 1 Discussion of the results The preliminary experimental campaign highlighted the same performance at varying of the tool speed; in particular, for all the investigated materials, the amax angle was not sensitively dependent on the feed rate within the investigated range.
References [1] H.
Micari: Advanced Material Research, Vol. 6-8 (2005), pp. 479-486
Online since: April 2015
Authors: Valery V. Kuzin, S.N. Grigoriev, Marina Volosova, Mike Fedorov
Designing of Details Taking into Account Degradation of Structural Ceramics at Exploitation Valery Kuzin 1, a *, Sergey Grigoriev 1, b, Marina Volosova 1, c, Mike Fedorov 1, d 1 University «Stankin», Vadkovsky per. 3a, Moscow, Russia a kyzena@post.ru, b rector@stankin.ru, c science@stankin.ru, d miklef8@yandex.ru Keywords: Ceramics, Structural element, Microstress, Damage, Crack, Failure, Barrier, Designing Abstract.
The simplest stress distribution is formed under the action of concentrated force; stress intensity changes within the range σi = 97 – 149 MPа (КΔ = 1,53) и σi = 91 – 125 МPа (КΔ = 1,37) at the interfaces 1 and 2 respectively.
As a result of the heat flux stress intensity changes within the range σi = 83 – 464 МPа (КΔ = 5,59) и σi = 280 – 482 МPа (КΔ = 1,73) at the interfaces 1 and 2 respectively.
References [1] S.
Res. 31 (2011) 479-483
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