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RISS 인기검색어
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- 저자 : Liying Han (검색결과 4 건)
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Liying Dong,Xinghui Han,Lin Hua,Jian Lan,Wuhao Zhuang 대한기계학회 2015 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.29 No.4
In a cold rotary forging press with double eccentricity bushings, the rotation speed ratio of double eccentricity bushings has significanteffects on the rocking tool path. Thus, this study examines the effects of the rotation speed ratio of double eccentricity bushings on therocking tool path of cold rotary forging presses. On the basis of kinematics relations, the motion equations of the rocking tool with doubleeccentricity bushings are obtained. The effects of the rotation speed ratio of double eccentricity bushings on the rocking tool path arestudied by using the obtained motion equations.
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Liying Song,Hao Shi,Peng Han,Xiaohong Ji,Fubin Ma 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.102 No.-
A contrastive study about ultraviolet light (UV) illumination on Na2SO4, NaCl induced Q450 weatheringsteel was qualitatively and quantitatively studied. The corrosion rate was calculated from mass losses andthe order was as following, coupons deposited with Na2SO4 under UV illumination(238.18 lA cm 2) > with NaCl under UV illumination (213.77 lA cm 2) > with NaCl under Dark condition(71.98 lA cm 2) > with Na2SO4 under Dark condition (43.26 lA cm 2). The influence of UV illuminationon metal corrosion followed this sequence: Na2SO4 > NaCl, and which was on account of corrosion productsfilm on metal depositing Na2SO4 with a larger carrier density on metal depositing Na2SO4 with a largercarrier density (9.32 1020 cm 3) and stronger electric conductivity ability than NaCl (8.93 1020cm 3). Electrochemical impedance spectroscopy studies revealed charge transfer resistance Rct value,suggesting that smaller resistances gained on the rusted samples due to UV illumination, and an acceleratedcorrosion effect on rusted sample was also obtained under UV illumination. The improved corrosionperformance by UV illumination was due to corrosion products of semiconductor property andphotovoltaic effect.
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Zhang, Liying,Li, Defa,Qiao, Shiyan,Wang, Jituan,Bai, Lu,Wang, Zongyi,Han, In K. Asian Australasian Association of Animal Productio 2001 Animal Bioscience Vol.14 No.11
Eight $12.4{\pm}0.6kg$ initial body weight crossbred barrows were used to determine the effect of soybean galactooligosaccharides on nutrient and energy digestibility, and digesta transit time. Four dietary treatments were utilized in this trial. Treatment one was a corn-soybean meal based diet (SBM) containing raffinose and stachyose at the levels of 0.16% and 0.75%, respectively. Treatment two (control) was a corn-HP300 (soybean concentrate protein) diet. In treatments three and four, 1.1% and 2.2% commercial stachyose was added to the control diet to provide total dietary stachyose at the levels of 1% and 2%, respectively. The soybean galactooligosaccharides (raffinose + stachyose) level in treatment one was slightly lower compared to that in treatment three. Three collection periods were run with two pigs for each treatment/period. There was a 4 d adjustment period followed by a 3 d collection period. The results showed that the nitrogen retention (86.79%) of pigs fed treatment two diet was higher than that of pigs fed treatment one by 5.2% (p<0.05). The nitrogen retention of treatment three was intermediate 83.09%. The apparent fecal digestibility of all amino acids in treatment two was numerically highest, followed by treatments three and four. However, there were no significant difference among groups (p>0.05). The dry matter (DM), organic matter (OM), crude protein (CP), and crude fiber (CF) digestibility numerically decreased as the soybean galactooligosaccharides level increased, but were not significantly different (p>0.05). Chromium content in feces (from the inclusion of 0.3% chromic oxide in the diets) differed among treatments (p<0.05) at 15 h, 18 h, and 21 h after eating. This showed that the digesta transit time was differed significantly among treatments. Treatment four was the shortest, followed by treatment three, SBM and control. The results demonstrated that in the absence of antinutritional factors and soybean antigen protein, inclusion of 1% and 2% stachyose in corn-HP300 diet has no significant effect on the digestibility of DM, OM, CP, CF and amino acids. When the soybean galactooligosaccharide level in diet one and diet three were adjusted to be almost the same, antinutritional factors such as trypsin inhibitor and soybean antigen protein could decrease the nutrient digestibility and nitrogen retention rate of diet. High levels of soybean galactooligosaccharides shortened the digesta transit time in the intestinal tract. This trial suggested that the total level of soybean galactooligosaccharides (stachyose+raffinose) in the weanling piglet diet is better not to exceed 1% when common soybean meal is used as main protein source.
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New Structure Design of Magnet for 1 MJ HTS SMES
Wei Wei,Yinghong Luo,Liying Han 보안공학연구지원센터 2016 International Journal of Grid and Distributed Comp Vol.9 No.9
In recent years, the superconducting technology is popular in our production and life. An increasing number of researchers and institutions participate in study of the super-conducting magnetic energy storage (SMES) system. SMES is widely used in power sup-ply system, new energy system and pulsed power supply system. However, the leakage magnetic field of traditional SMES is more serious, which limited the application in engi-neering. This paper proposes an improved scheme for the 1 MJ single-solenoid structure magnet by using the actively shielding theory. Moreover, by using particle swarm optimi-zation, the structural parameters of the superconducting magnets are optimized respec-tively. Finally, the ANSYS modeling simulation is built by these structural parameters, all simulation data are analyzed and compared.
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