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- 저자 : Wang Jinbo (검색결과 13 건)
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Pang, Jinbo,Bachmatiuk, Alicja,Fu, Lei,Yan, Chenglin,Zeng, Mengqi,Wang, Jiao,Trzebicka, Barbara,Gemming, Thomas,Eckert, Juergen,Rummeli, Mark H. American Chemical Society 2015 The Journal of Physical Chemistry Part C Vol.119 No.23
<P>One of the more common routes to fabricate graphene is by chemical vapor deposition (CVD). This is primarily because of its potential to scale up the process and produce large area graphene. For the synthesis of large area monolayer Cu is probably the most popular substrate since it has a low carbon solubility enabling homogeneous single-layer sheets of graphene to form. This process requires a very clean substrate. In this work we look at the efficiency of common pretreatments such as etching or wiping with solvents and compare them to an oxidation treatment at 1025 °C followed by a reducing process by annealing in H<SUB>2</SUB>. The oxidation/reduction process is shown to be far more efficient allowing large area homogeneous single layer graphene formation without the presence of additional graphene flakes which form from organic contamination on the Cu surface.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jpccck/2015/jpccck.2015.119.issue-23/acs.jpcc.5b03911/production/images/medium/jp-2015-03911k_0007.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/jp5b03911'>ACS Electronic Supporting Info</A></P>
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An accurate and robust adaptive notch filter-based phase-locked loop
Li, Jinbo,Wang, Qin,Xiao, Lan,Liu, Zehao,Wu, Qunfang The Korean Institute of Power Electronics 2020 JOURNAL OF POWER ELECTRONICS Vol.20 No.6
The use of an adaptive notch filter (ANF) is one of the most popular methods to block harmonics in a phase-locked loop (PLL). Existing ANFs suffer from drawbacks such as a low harmonic rejection capability, complex structure or instability. To improve the performance of ANF-based PLLs, an enhanced ANF (EANF) is proposed in this paper. Its structure, filtering characteristics and frequency-adaptive method are analyzed. Multiple EANFs can be easily cascaded and achieve adaptation through a common frequency feedback loop (FFL). A small signal model is provided, and its control parameters are tuned through the symmetrical optimum method. The harmonic rejection capability and stability of the proposed method are confirmed through simulation and experimental results.
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Hongyan Wang,Jinbo Lu 제어·로봇·시스템학회 2022 International Journal of Control, Automation, and Vol.20 No.1
In this paper, a new type of pneumatic-hydraulic upper limb rehabilitation training system is designed, and the system modeling and control method are studied. The 2DOF fuzzy fractional PID controller is proposed, which provides a new reference for improving the control accuracy of two degrees of freedom pneumatic system. Due to the increase of the regulating parameters of the fractional order controller, a multi-objective particle swarm optimization algorithm is designed to determine the parameters of the control system and optimize the determination process of the parameters. In order to verify the effectiveness of the control method, an experimental study was carried out by building a pneumatic-hydraulic upper limb rehabilitation training system platform. Compared with PID controller, the overshoot of the system controlled by fractional order fuzzy PID controller is reduced by 17.3%. The peak time is shortened about 11.7%, and the delay time of sine tracking signal is reduced about 10.6%. The results show that the control performance of two degrees of freedom fractional order fuzzy PID controller is better than other controllers.
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Bing Geng,Jinbo Gao,Hongbing Cheng,Guang Guo,Zhaohong Wang Asian Australasian Association of Animal Productio 2024 Animal Bioscience Vol.37 No.6
Objective: This study aimed to assess the effects of dietary mulberry leaves on the growth, production performance, gut microbiota, and immunological parameters of poultry and livestock. Methods: The PubMed, Embase, and Scopus databases were systematically analyzed to identify pertinent studies up to December 2022. The effects of mulberry leaf diet was assessed using the weighted mean difference, and the 95% confidence interval was calculated using a random-effects model. Results: In total, 18 studies that sampled 2,335 poultry and livestock were selected for analysis. Mulberry leaves improved the average daily gain and reduced the feed/meat ratio in finishing pigs, and the average daily gain and average daily feed intake in chicken. In production performance, mulberry leaves lowered the half carcass weight, slaughter rate, and loin eye area in pigs, and the slaughter rate in chickens. Regarding meat quality in pigs, mulberry leaves reduced the cooked meat percentage, shear force, crude protein, and crude ash, and increased the 24 h pH and water content. In chickens, it increased the drip loss, shear force, 45 min and 24 h pH, crude protein, and crude ash. Mulberry leaves also affect the abundances of gut microbiota, including Bacteroides, Prevotella, Megamonas, Escherichia-Shigella, Butyricicoccus, unclassified Ruminococcaceae, Bifidobacterium, Lactobacillus, and Escherichia coli in poultry and livestock. Mulberry leaves at different doses were associated with changes in antioxidant capacity in chickens, and immune organ indexes in pigs. With respect to egg quality, mulberry leaves at different doses improved the shell strength, yolk color, eggshell thickness, and eggshell weight. However, moderate doses diminished the egg yolk ratio and the egg yolk moisture content. Conclusion: In general, dietary mulberry leaves improved the growth, production performance, and immunological parameters in poultry and livestock, although the effects varied at different doses.
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Immunomodulatory effects of Clostridium butyricum on human enterocyte-like HT-29 cells
Gao Quanxin,Wang Jinbo,Qi Lili,Wu Tianxing,Xia Tingting 한국통합생물학회 2013 Animal cells and systems Vol.17 No.2
Oral administration of Clostridium butyricum as probiotics is increasingly gaining importance in the treatment of intestinal inflammations and improvement of animal performance. The mechanisms of host cell receptor recognition of C. butyricum and downstream immune signaling pathways leading to this beneficial event, however, remain unclear. In this study, C. butyricum was investigated for its capability to influence the innate immune response of HT-29 cells to explore its mechanism of action. Our data showed that C. butyricum was able to stimulate toll-like receptor 2 (TLR2) production at mRNA level; however, TLR4, TLR5, TLR9, and myeloid differentiation primary response protein 88 (MyD88) transcription levels remain unaltered. The nuclear factor kB (NF-kB), interleukin-8 (IL-8), and tumor necrosis factor alpha (TNF-a) levels in response to C. butyricum were significantly increased, indicating that HT-29 cells were sensitised by C. butyricum. It is the first time that our findings have showed the specific signaling pathways in HT-29 cells stimulated by C. butyricum, which, at least in part, can help to explain the beneficial properties of C. butyricum.
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Zhenyu Ou,Yongjie Wang,Jinbo Chen,Le Tao,Li Zuo,Deepak Sahasrabudhe,Jean Joseph,Long Wang,Shuyuan Yeh 생화학분자생물학회 2018 Experimental and molecular medicine Vol.50 No.-
Although early studies suggested that bladder cancer (BCa) is more prevalent in men than in women, muscle-invasive rates are higher in women than in men, suggesting that sex hormones might play important roles in different stages of BCa progression. In this work, we found that estrogen receptor beta (ERβ) could increase BCa cell proliferation and invasion via alteration of miR-92a-mediated DAB2IP (DOC-2⁄DAB2 interacting protein) signals and that blocking miR- 92a expression with an inhibitor could partially reverse ERβ-enhanced BCa cell growth and invasion. Further mechanism dissection found that ERβ could increase miR-92a expression at the transcriptional level via binding to the estrogen-response-element (ERE) on the 5′ promoter region of its host gene C13orf25. The ERβ up-regulated miR-92a could decrease DAB2IP tumor suppressor expression via binding to the miR-92a binding site located on the DAB2IP 3′ UTR. Preclinical studies using an in vivo mouse model also confirmed that targeting this newly identified ERβ/miR-92a/ DAB2IP signal pathway with small molecules could suppress BCa progression. Together, these results might aid in the development of new therapies via targeting of this ERβ-mediated signal pathway to better suppress BCa progression.
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Hongxu Li,Qin Wang,Qunfang Wu,Lan Xiao,Jinbo Li 전력전자학회 2024 JOURNAL OF POWER ELECTRONICS Vol.24 No.4
Due to different output voltages, capacitor voltage imbalance occurs between half-bridge sub-modules (HBSM) and fullbridge sub-modules (FBSM) in hybrid modular multilevel converters (MMCs) under a boosted modulation index (m). To address this issue, a capacitor voltage balancing method based on second-harmonic voltage injection is proposed in this paper. The mechanism of the proposed method is to eliminate the DC component in the charging power of sub-modules under the restriction that the HBSM cannot output negative voltage. The proposed method is divided into two cases according to m. Case 1 is used when m ≤ 1.4, while Case 2 is implemented when m > 1.4. When compared with similar capacitor voltage balancing methods, the proposed SVI method has a simpler structure that can greatly reduce the number of computations. Simulation and experimental results verify the effectiveness of the proposed capacitor voltage balancing method.
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Variations of Immunoglobulins in Colostrum and Immune Milk as Affected by Antigen Releasing Devices
Zhaoa, Shengguo,Zhanga, Chungang,Wang, Jiaqi,Liu, Guanglei,Bu, Dengpan,Cheng, Jinbo,Zhou, Lingyun Asian Australasian Association of Animal Productio 2010 Animal Bioscience Vol.23 No.9
This work was conducted to examine the variation of immunoglobulins (Igs) in serum, immune milk, normal milk and colostrum upon implantation of a new Antigen Releasing Device (ARD). The core of each ARD housed an immunostimulating complex (ISCOM) that was made of adjuvant Quil A and type XIII lipase from a Pseudomonas sp. Each ARD was coated with polylactic acid, known as polylactide, that controls antigen release. Twenty lactating Chinese Holstein cows were divided into 2 groups (n = 10): test group and control group. All cows in the test group were implanted with a single injection in the right iliac lymph node with 3 types of ARDs, which were designed to release the antigens at d 0, 14 and 28 post-implantation. Blood and milk samples were collected from both groups, and colostrum samples were also collected from other post-partum cows in the same farm. Concentrations of $IgG_1$, IgA and IgM in whey and serum were measured by sandwich ELISA. The results showed that the $IgG_1$, IgA and IgM concentrations in serum and whey from the test group were higher than from the control group. Among the three Igs measured, the $IgG_1$ concentration in serum was significantly higher at d 40 after ARD implantation, and the $IgG_1$ concentration in whey peaked at d 9, 17 and 30, which corresponded with release of the antigen. Based on Pearson's correlation between Ig concentration and production parameters, IgA concentration in normal milk was positively correlated with lactation period, which reflected IgA changes during the lactation period in immune milk. In colostrum, $IgG_1$, IgA and IgM decreased abruptly from d 0 to 3, and then decreased slightly. In conclusion, serum $IgG_1$ concentration can be affected by controlled release of the ARD, while whey IgA levels are primarily affected by lactation period. These results may be useful in future studies designed to regulate concentrations of Igs in immune milk.
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QingLing Zhai,KaiXin Wang,Defu Zhang,Jinbo Chen,XiaoMeng Dong,Yonghui Pan 대한통증학회 2023 The Korean Journal of Pain Vol.36 No.3
Background: Perampanel, a highly selective glutamate AMPA receptor antagonist, is widely used to treat epilepsy. Since the existence of common pathophysiological features between epilepsy and migraine, the aim of this study was to investigate whether perampanel could exert an antimigraine effect. Methods: Nitroglycerin (NTG) was used to induce a migraine model in rats, and the model animals were pretreatment with 50 μg/kg and 100 μg/kg perampanel. The expression of pituitary adenylate-cyclase-activating polypeptide (PACAP) was quantified by western blot and quantitative real-time PCR in the trigeminal ganglion, and rat-specific enzyme-linked immunosorbent assay in serum. Western blot was also conducted to explore the effects of perampanel treatment on the phospholipase C (PLC)/protein kinase C (PKC) and protein kinase A (PKA)/ cAMP-responsive-element-binding protein (CREB) signaling pathways. Moreover, the cAMP/PKA/CREB-dependent mechanism was evaluated via in vitro stimulation of hippocampal neurons. The cells were treated with perampanel, antagonists and agonists for 24 hours and cell lysates were prepared for western blot analysis. Results: Perampanel treatment notably increased the mechanical withdrawal threshold and decreased head grooming and light-aversive behaviors in NTG-treated rats. It also decreased PACAP expression and affected cAMP/ PKA/CREB signaling pathway. However, PLC/PKC signaling pathway may not be involved in this treatment. In in vitro studies, perampanel notably decreased PACAP expression by inhibiting cAMP/PKA/CREB signaling pathway. Conclusions: This study shows that perampanel inhibits the migraine-like pain response and that this beneficial effect might be attributable to regulation of the cAMP/PKA/CREB signaling pathway.
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