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RISS 인기검색어
- 검색키워드
- 저자 : Wenbo Ji (검색결과 4 건)
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Yinghui Bao,Chunqi Gao,Wenbo Hao,Cheng Ji,Lihong Zhao,Jianyun Zhang,Tao Liu,Qiugang Ma 아세아·태평양축산학회 2015 Animal Bioscience Vol.28 No.10
The present study was conducted to determine the effects of L-carnosine (LC) and/or alpha-lipoic acid (ALA) supplementation on growth performance, blood thyroid hormones and lipid profiles in finishing pigs. A total of 40 (Landrace×Yorkshire) pigs with an initial body weight of 57.93±3.14 kg were randomly allocated to 4 experimental diets using a 2×2 factorial arrangement with 2 LC supplemental levels (0 or 0.1%) and 2 ALA supplemental levels (0 or 0.03%) in basal diets. The results showed that pigs fed LC-supplemented diets increased final live weight, average daily gain, and average daily feed intake compared to those of pigs fed without LC-supplemented diets (p<0.05). Dietary supplementation with ALA did not affect the growth performance and carcass traits of pigs (p>0.05). Additionally, LC supplementation increased serum triiodothyronine, thyroxine levels, and ALA supplementation increased serum triiodothyronine levels (p<0.05). Serum total cholesterol and triglycerides levels were significantly decreased in LC and ALA supplemented groups, respectively (p<0.05). Moreover, serum low density lipoprotein cholesterol levels were lower in the ALAsupplemented groups than those of pigs fed without ALA-supplemented diets (p<0.05). However, no significant LC×ALA interaction effect on growth performance, blood thyroid hormones and lipid profiles was found. This study suggested that dietary supplementation of LC resulted in better growth performance compared to that of ALA supplementation. L-carnosine and/or ALA supplementation positively modified blood lipid profiles, which may have the potential to prevent cardiovascular diseases.
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Junzhou Huo,Hanyang Wu,Wenbo Ji 대한기계학회 2020 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.34 No.11
Extreme vibration often occurs on TBM main system during the tunneling process. This paper established the mathematical model for TBM main system considering the impact load, time-varying internal incentive and the complex coupling relationship between each vibration degree of freedom. The dynamic model was modified by the multi-point vibration measured data. The calculation error of the system response of the main support frame’s main vibration direction was within 10 %. And it was found that the overturning vibration and axial vibration of the system were the main forms of vibration of the system. It was determined that the low-frequency vibration of 15-20 Hz was a coupled vibration of system’s first to fourth mode vibration mode. Based on the vibration characteristics of TBM main system, this paper designed a tuned mass vibration absorption structure (TMVAS) that can adapt to the multi degree of freedom (MDOF) coupling vibration of TBM main system during the actual tunneling process. To minimize system vibration, the optimal design parameters of the system was determined. The maximum amplitude of the axial and horizontal overturning vibration of the support frame was reduced by 26.7 % and 13 %, and the maximum amplitude of the cutterhead’s axial vibration was reduced by 23.2 %.
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Bao, Yinghui,Gao, Chunqi,Hao, Wenbo,Ji, Cheng,Zhao, Lihong,Zhang, Jianyun,Liu, Tao,Ma, Qiugang Asian Australasian Association of Animal Productio 2015 Animal Bioscience Vol.28 No.10
The present study was conducted to determine the effects of L-carnosine (LC) and/or alpha-lipoic acid (ALA) supplementation on growth performance, blood thyroid hormones and lipid profiles in finishing pigs. A total of 40 ($Landrace{\times}Yorkshire$) pigs with an initial body weight of $57.93{\pm}3.14kg$ were randomly allocated to 4 experimental diets using a $2{\times}2$ factorial arrangement with 2 LC supplemental levels (0 or 0.1%) and 2 ALA supplemental levels (0 or 0.03%) in basal diets. The results showed that pigs fed LC-supplemented diets increased final live weight, average daily gain, and average daily feed intake compared to those of pigs fed without LC-supplemented diets (p<0.05). Dietary supplementation with ALA did not affect the growth performance and carcass traits of pigs (p>0.05). Additionally, LC supplementation increased serum triiodothyronine, thyroxine levels, and ALA supplementation increased serum triiodothyronine levels (p<0.05). Serum total cholesterol and triglycerides levels were significantly decreased in LC and ALA supplemented groups, respectively (p<0.05). Moreover, serum low density lipoprotein cholesterol levels were lower in the ALA-supplemented groups than those of pigs fed without ALA-supplemented diets (p<0.05). However, no significant $LC{\times}ALA$ interaction effect on growth performance, blood thyroid hormones and lipid profiles was found. This study suggested that dietary supplementation of LC resulted in better growth performance compared to that of ALA supplementation. L-carnosine and/or ALA supplementation positively modified blood lipid profiles, which may have the potential to prevent cardiovascular diseases.
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Wang, Peili,Koo, Yun Hee,Kim, Woojae,Yang, Wenbo,Cui, Xiaoneng,Ji, Wei,Zhao, Jianzhang,Kim, Dongho American Chemical Society 2017 The Journal of Physical Chemistry Part C Vol.121 No.21
<P>A N<^>N Pt(II) complex, Pt-1, with two heteroleptic ligands was prepared, which is a rarely reported molecular structure. The two different acetylide ligands, i.e., boron-dipyyromethane (BDP) and naphthalenediimide (NDI) chromophores, show strong absorption in the visible region. The photophysical properties of the complex were investigated by using steady-state and femtosecond/nanosecond time resolved optical spectroscopies, as well as electrochemical characterization. Upon selective photoexcitation of the coordinated BDP acetylide ligand at 503 run, the Forster resonance energy transfer (FRET, k(FRET) = 1.2 x 10(11) s(-1)) process from the BDP to NDI ligand was observed, which leads to the population of the singlet excited state of the latter. After that, intersystem crossing (ISC) process occurs (k(ISC) = 3.3 X 10(9) s(-1)), which generates the triplet excited state of the NDI ligand (tau = 28.1 mu s). The overall excited-state dynamics are fairly similar in both nonpolar toluene and polar benzonitrile, indicating that photoinduced charge separation dynamics between BDP and NDI is insignificant. This is presumably due to the strong interaction between the NDI ligand and central Pt atom which can give rise to strong spin-orbit coupling. This hypothesis can be further supported by the excited-state dynamics obtained after photoexcitation at the S-2 state of the NDI ligand. The ultrafast ISC from the S-2 state of the NDI ligand to a higher triplet state, which corresponds to the breakdown of the Kasha-Vavilov's rule, was observed, suggesting that the NDI core strongly interacts with the heavy Pt atom. Finally, we identified that this broadband visible light-excitable Pt(II) complex can be used as a triplet photosensitizer for two-color excitable triplet-triplet annihilation upconversion, and the upconversion quantum yield was determined as 4.1%.</P>
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