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47篇 您的检索式:作者名="Peiwen Li"
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1Bone marrow mesenchymal stem cell therapy in ischemic stroke: mechanisms of action and treatment optimization strategies显示文摘Animal and clinical studies have confirmed the therapeutic effect of bone marrow mesenchymal stem cells on cerebral ischemia, but their mechanisms of action remain poorly understood. Here, we summarize the transplantation approaches, directional migration, differentiation, replacement, neural circuit reconstruction,angiogenesis, neurotrophic factor secretion, apoptosis, immunomodulation, multiple mechanisms of action,and optimization strategies for bone marrow mesenchymal stem cells in the treatment of ischemic stroke.We also explore the safety of bone marrow mesenchymal stem cell transplantation and conclude that bone marrow mesenchymal stem cell transplantation is an important direction for future treatment of cerebral ischemia. Determining the optimal timing and dose for the transplantation are important directions for future research.Guihong Li Fengbo Yu Ting Lei Haijun Gao Peiwen Li Yuxue Sun Haiyan Huang Qingchun Mu 2016Neural Regeneration Research2016,11,6:22
2Highly efficient Zr doped-TiO_2/glass fiber photocatalyst and its performance in formaldehyde removal under visible light显示文摘Zr-doped-TiO_2 loaded glass fiber(ZT/GF) composite photocatalysts with different Zr/Ti ratios were prepared with a sol–gel process. Zr4+can replace Ti4+in the TiO_2 lattice, which is conducive to forming the anatase phase and reducing the calcination temperature. The glass fiber carrier was responsible for better dispersion and loading of Zr-doped-TiO_2 particles, improving the applicability of the Zr-doped-TiO_2. The ZT/GF photocatalysts were characterized by X-ray diffraction(XRD), scanning electron microscope(SEM), Fourier transform infrared spectroscopy(FT-IR), ultraviolet–visible spectroscopy(UV–vis) and Barrett–Joyner–Halenda(BJH). The performance of photocatalysts with different loading was evaluated in formaldehyde degradation under visible light at room temperature. ZT/GF0.2exhibited the highest activity, with a formaldehyde removal rate as high as 95.14% being observed, which is better than that of the photocatalyst particles alone. The stability of the catalyst was also tested, and ZT/GF exhibited excellent catalytic performance with 94.38%removal efficiency, even after seven uses.Chao Huang Yaping Ding Yingwen Chen Peiwen Li Shemin Zhu Shubao Shen 2017Journal of Environmental Sciences2017,29,10:6
3The transcription factor SlHY5 regulates the ripening of tomato fruit at both the transcriptional and translational levels显示文摘Light plays a critical role in plant growth and development,but the mechanisms through which light regulates fruit ripening and nutritional quality in horticultural crops remain largely unknown.Here,we found that ELONGATED HYPOCOTYL 5(HY5),a master regulator in the light signaling pathway,is required for normal fruit ripening in tomato(Solanum lycopersicum).Loss of function of tomato HY5(SlHY5)impairs pigment accumulation and ethylene biosynthesis.Transcriptome profiling identified 2948 differentially expressed genes,which included 1424 downregulated and 1524 upregulated genes,in the Slhy5 mutants.In addition,genes involved in carotenoid and anthocyanin biosynthesis and ethylene signaling were revealed as direct targets of SlHY5 by chromatin immunoprecipitation.Surprisingly,the expression of a large proportion of genes encoding ribosomal proteins was downregulated in the Slhy5 mutants,and this downregulation pattern was accompanied by a decrease in the abundance of ribosomal proteins.Further analysis demonstrated that SlHY5 affected the translation efficiency of numerous ripening-related genes.These data indicate that SlHY5 regulates fruit ripening both at the transcriptional level by targeting specific molecular pathways and at the translational level by affecting the protein translation machinery.Our findings unravel the regulatory mechanisms of SlHY5 in controlling fruit ripening and nutritional quality and uncover the multifaceted regulation of gene expression by transcription factors.Weihao Wang Peiwen Wang Xiaojing Li Yuying Wang Shiping Tian Guozheng Qin 2021Horticulture Research2021,8,1:6
4Anti-rutting performance evaluation of modified asphalt binders: A review显示文摘Asphalt pavement inevitably suffers rutting distress induced by repeated loads under high temperatures, which can be effectively alleviated by the modification of asphalt binders.This paper summarized the asphalt modifiers for enhancing the performance of asphalt pavement at high temperatures in terms of the modifier type, additive amount and improving effect. Then, the anti-rutting performance evaluation methods of asphalt binder were introduced with details, including the ring and ball(R&B) test, the dynamic viscosity test, the zero/low shear viscosity(ZSV/LSV) test, the dynamic shear rheometer(DSR) test,the repeated creep and recovery(RCR) test, and the multiple stress creep and recovery(MSCR) test. Furthermore, the sensitivity of the evaluation method to asphalt modifier was analyzed using the normalization method. It was found that the indicators from the MSCR test could clearly reveal the influence of asphalt modifiers on high temperature performance of asphalt binder. But it still had some limitations affecting the accuracy of evaluation results, such as the number of creep-recovery cycles, the stress level and the recovery time. In addition, according to the rutting resistance improvement ratio(RRIR),the styrene-butadiene-styrene(SBS) modifier performed better in improving the rutting resistance of asphalt binder, compared with other modifiers when added within the usual dosage range.Yan Li Peiwen Hao Chaozhi Zhao Jwnqiang Ling Tao Wu Dewen Li Jingwen Liu Bowei Sun 2021Journal of Traffic and Transportation Engineering(English Edition)2021,8,3:4
5Hexagonal boron nitride:A metal-free catalyst for deep oxidative desulfurization of fuel oils显示文摘Oxidative desulfurization(ODS)has been proved to be an efficient strategy for the production of clean fuel oil.Numerous metal-based materials have been employed as excellent ODS catalysts,but being hindered by their high-cost and potential secondary pollution.In this work,we employed graphene analogous hexagonal boron nitride(h-BN)as a metal-free catalyst for ODS with hydrogen peroxide(H2O2)as the oxidant.The h-BN catalyst was characterized and proved to be a few-layered structure with relatively high specific surface areas.The h-BN catalyst showed a 99.4%of sulfur removal in fuel oil under the optimized reaction conditions.Besides,the h-BN can be recycled for 8 times without significant decrease in the catalytic performance.Detailed mechanism analysis found that it is the boron radicals in h-BN activated H2O2 to generate·OH species,which can readily oxidize sulfides to corresponding sulfones for separation.This work would provide another choice in choosing metal-free catalysts for ODS.Peiwen Wu Linjie Lu Jing He Linlin Chen Yanhong Chao Minqiang He Fengxia Zhu Xiaozhong Chu Huaming Li Wenshuai Zhu 2020Green Energy & Environment2020,5,2:3
6Differentiation of fetal pancreatic stem cells into neuron-like and islet-like cells in vitro显示文摘Pancreatic stem cells were isolated and cultured from aborted human fetal pancreases of gestational age 14-20 weeks. They were seeded at a density of 1 × 104 in serum-free media for differentiation into neuron-like cells, expressing β-tubulin III and glial fibrillary acidic protein. These neuron-like cells displayed a synapse-like morphology and appeared to form a neuronal network. Pancreatic stem cells were also seeded at a density of 1 × 105 for differentiation into islet-like cells, expressing insulin and glucagon, with an islet-like morphology. These cells had glucose-stimulated secretion of human insulin and C-peptide. Results suggest that pancreatic stem cells can be differentiated into neuron-like and islet-like cells.Xiufeng Hua Yanwei Wang Peiwen Lian Shouxin Zhang Jianyuan Li Haiyan Wang Shulin Chen Wei Gao 2012Neural Regeneration Research2012,7,7:3
7AI Enabled Wireless Communications with Real Channel Measurements:Channel Feedback显示文摘Artificial intelligence(AI)has shown great potential in wireless communications.AI-empowered communication algorithms have beaten many traditional algorithms through simulations.However,the existing works just use the simulated datasets to train and test the algorithms,which can not represent the power of AI in practical communication systems.Therefore,Peng Cheng Laboratory holds an AI competition,National Artificial Intelligence Competition(NAIC):AI+wireless communications,in which one of the topics is AI-empowered channel feedback system design using practical measurements.In this paper,we give a baseline neural network design,QuanCsiNet,for this competition,and the details of the channel measurements.QuanCsiNet shows excellent performance on channel feedback and the complexity of the neural networks is also given.Jiajia Guo Xiangyi Li Muhan Chen Peiwen Jiang Tingting Yang Weiming Duan Haowen Wang Shi Jin Quan Yu 2020Journal of Communications and Information Networks2020,5,3:2
83D-printing of integrated spheres as a superior support of phosphotungstic acid for deep oxidative desulfurization of fuel显示文摘Construction of catalysts with integral structure for oxidative reaction process is an essential promotion to catalysts in industrial application.In this work,a 3D printing method was employed to prepare 3D printed spheres(3D-PSs),followed by carbonization to form 3D carbon spheres(3D-CSs).Then,a 3D-CSs supported phosphotungstic acid(HPW/3D-CSs)was prepared for deep oxidative desulfurization.Compared with traditional powder catalysts,the as-prepared catalyst is easy to be operated and separated from oil products.The supported catalyst possesses excellent catalytic performance and the removal of DBT,4-MDBT and 4,6-DMDBT in fuel oil,reaching^100%of sulfur removal.The effects of various experimental parameters on desulfurization efficiency were considered to optimize reaction conditions.Moreover,the catalyst shows excellent thermal and chemical stability,with no obvious decrease in desulfurization activity after 5 cycles.GC–MS analysis indicates DBT sulfone was the solely oxidized product of DBT.Jie Zhu Peiwen Wu Linlin Chen Jing He Yingcheng Wu Chao Wang Yanhong Chao Linjie Lu Minqiang He Wenshuai Zhu Huaming Li 2020Journal of Energy Chemistry2020,29,6:2
9Preparation of Large Area Double Sided YBCO Thin Films by DC Magneton Sputtering显示文摘Tc, Jc and Rs properties of large area double sided YBCO thin films deposited on LaAlO3 substrates by direct current sputtering were reported.Film thickness of the obtained thin films is over 300 nm, Tc > 90 K; Rs can be as low as less than 1.0 mΩ(77 K, 10 GHz).Homogenousity of the properties around the plane was studied.Under the measnous distributions.Influences of substrate temperature and Ar and O2 pressures on properties of the double-sided thin films were discussed.Li Tao Gu Hongwei Wang Peiwen Wang Xiaoping Xie Bowei 2004Journal of Rare Earths2004,22,z1:2
10Theoretical Calculation On Forced Convective Condensation Heat Transfer Conefficient Of Nonazeotropic Mixtures Inside Tube 显示文摘Chen Min Li Peiwen Wang Qiuwang Tao Wenquan 2005Journal of Chemical Industry and Engineering2005,33,10:1
11Heat transfer enhancement to the drag-reducing flow of surfactant solution in two-dimensional channel with mesh-screen inserts at the inlet 显示文摘Li Peiwen Kawaguchi Y Daisaka H Yabe A Hishida K Maeda M 2001Journal of Heat Transfer2001,123,4:1
12Selective adsorption for removing sulfur: A potential ultra-deep desulfurization approach of jet fuels 显示文摘Shen Yuesong Li Peiwen Xue Xinhai 2012RSC Advances2012,,2:1
13Auxin signaling module OsSK41-OsIAA10-OsARF regulates grain yield traits in rice显示文摘Auxin is an important phytohormone in plants, and auxin signaling pathways in rice play key roles in regulating its growth, development, and productivity. To investigate how rice grain yield traits are regulated by auxin signaling pathways and to facilitate their application in rice improvement, we validated the functional relationships among regulatory genes such as OsIAA10, OsSK41, and OsARF21 that are involved in one of the auxin(OsIAA10) signaling pathways. We assessed the phenotypic effects of these genes on several grain yield traits across two environments using knockout and/or overexpression transgenic lines.Based on the results, we constructed a model that showed how grain yield traits were regulated by OsIAA10 and OsTIR1, OsAFB2, and OsSK41 and OsmiR393 in the OsSK41-OsIAA10-OsARF module and by OsARF21 in the transcriptional regulation of downstream auxin response genes in the OsSK41-OsIAA10-OsARF module. The population genomic analyses revealed rich genetic diversity and the presence of major functional alleles at most of these loci in rice populations. The strong differentiation of many major alleles between Xian/indica and Geng/japonica subspecies and/or among modern varieties and landraces suggested that they contributed to improved productivity during evolution and breeding. We identified several important aspects associated with the genetic and molecular bases of rice grain and yield traits that were regulated by auxin signaling pathways.We also suggested rice auxin response factor(OsARF) activators as candidate target genes for improving specific target traits by overexpression and/or editing subspecies-specific alleles and by searching and pyramiding the ‘best' gene allelic combinations at multiple regulatory genes in auxin signaling pathways in rice breeding programs.Fuying Ma Fan Zhang Yu Zhu Dengyong Lan Peiwen Yan Ying Wang Zejun Hu Xinwei Zhang Jian Hu Fuan Niu Mingyu Liu Shicong He Jinhao Cui Xinyu Yuan Ying Yan Shujun Wu Liming Cao Hongwu Bian Jinshui Yang Zhikang Li Xiaojin Luo 2023Journal of Integrative Plant Biology2023,65,7:1
14Optimization of PEM fuel cell flow channel dimensions- mathematic modeling analysis and experimen- tal verification 显示文摘Liu Hong Li Peiwen Wang Kai 2013International Journal of Hy- drogen Energy2013,38,:1
15Taking a lowglycemic index multi-nutrient supplement as breakfastimproves glycemic control in patients with type 2 diabetesmeliitus: a randomized controlled trial 显示文摘Di Li Peiwen Zhang Honghui Guo 2014Nutrients2014,6,12:1
16Verification of a model of thermal storage incorporated with an extended lumped capacitance method for various solid–fluid structural combinations显示文摘Peiwen Li Ben Xu Jingxiao Han Yongping Yang 2014Solar Energy2014,,:1
17Heat transfer enhancement to the drag-reducing flow of surfactant solution in two-dimensional channel with mesh-screen inserts at the inlet显示文摘Li Peiwen Kawaguchi Yasuo Daisaka Hisashi 2001J Heat Transfer2001,123,4:1
18Measurement of volume-occupying rate of cervical spinal canal and its role in cervical spondylotic myelopathy显示文摘Fulong Dong Cailiang Shen Shu Jiang Renjie Zhang Peiwen Song Yongqiang Yu Shiyu Wang Xiaohu Li Gang Zhao Changhai Ding 2013European Spine Journal2013,,5:1
19Even distribution/dividing of sin- gle-phase fluids by symmetric biturcation of flow chan- nels 显示文摘Liu Hong Li Peiwen 2013International Journal of Heat and Fluid Flow2013,40,:1
20Efficient use of waste heat and solar energy: Technologies o cooling, heating, power generation and heat transfer显示文摘Ya-Ling HE Ruzhu WANG Anthony Paul ROSKILLY Peiwen LI 2017Frontiers in Energy2017,11,4:1
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