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11篇 您的检索式:作者名="Libing Du"
    题名 作者 年代 出处 被引量
1Preparation and Composition-structure-thermal Stability Relation of a Novel Open-framework Vanadium Phosphate (H3NCH2CH2NH3)3显示文摘Yang Zanzhong Liao Libing Du Hongbing 2002Journal of University of Science and Technology Beijing (Mineral Metallurgy Materials)2002,9,1:1
2Study on the pipe friction resistance in long-distance rock pipe jacking engineering显示文摘Previous studies on pipe friction resistance are mainly concentrated in the soil layer,whereas the study on that in the rock stratum is limited.To estimate the pipe friction resistance in the rock stratum,the calculation models of pipe friction resistance and their applica-tion conditions were compared first.Then the friction resistance calculation model for pipe jacking in the rock stratum was established and simplified.Lastly,the measured(FM)and the computed(FN)pipe friction resistance was compared to validate the simplified friction resistance calculation model.The following conclusions can be drawn:(1)The existing calculation methods of pipe friction resistance can be well verified in the soil layer but cannot be applied in the rock stratum.(2)Sediment,pipe–rock friction coefficient and mud buoyancy are the main factors affecting the pipe friction resistance in long-distance rock pipe jacking engineering.(3)The simplified calculation model established by Deng et al.can estimate the pipe friction resistance in different rock strata at different jacking stages with satisfac-tory outcomes.Further research on the pipe-rock friction coefficient in different rock strata with different pipe–rock contact conditions merits further investigation to better predict the pipe friction resistance in the rock stratum.The research results have certain practica-bility and can provide a reference for similar projects.Peng Chen Xinrong Liu Zhiyun Deng Ninghui Liang Libing Du Han Du Yedi Huang Lingyun Deng Gaoyang Yang 2023Underground Space2023,,2:1
3Cr(Ⅵ)Retention and Transport Through Fe(Ⅲ)-Coated Natural Zeolite显示文摘Du Gaoxiang Li Zhaohui Liao Libing 2012J Hazard Mater2012,,:1
4Mineralogical Study on A Graphite Tailing from Luobei, China显示文摘China produces the largest amount of graphite raw materials in the world and the largest amount of graphite tailings at the same time. At present, graphite tailings in China are up to 200 million tones, which not only occupy large area of land, cause environmental pollutions, the collapes of the tailings dam also threaten the life of local residents.HAI Yun LIAO Libing DU Gaoxiang L Guocheng 2013矿物学报2013,33,S1:0
5Purification of the Beonite from Shangtianti, Henan Province, China显示文摘Bentonites consisting mainly of montmorillonite are widely utilized in various applications. However, natural bentonites contain many kinds of impurities such as quartz, cristobalite, feldspar, zeolite, calcite etc., which can decrease the performance of bentonite. Furthermore, quartz and cristobalite are carcinogenic. Therefore purification of bentonite is critical to its applications. Among the impurities in bentonite, cristobalite is the most difficult one to get rid of because of its tiny particle size and aggregation state.LIAO Libing WANG Mingjun DU Gaoxiang GONG Zhijin L Guocheng 2013矿物学报2013,33,S1:0
6MBD2 promotes Th2 differentiation in ovalbumin-induced CD4+T cells显示文摘Introduction:Allergen-specific CD4+T cells play a central role in autoimmune disorders,allergies and asthma,with Th2-type immunity being the typical functional response of CD4+T cells.This study aimed to investigate the role of MBD2 in regulating Th2 cell differentiation.Methods:Splenic mononuclear cells were extracted from C57BL/6 mice,and CD4+T cells were isolated using magnetic beads and confirmed through flow cytometry.Lentivirus was employed to construct MBD2-silenced CD4+T cells.In vitro experiments were performed to treat splenogenic mononuclear cells and CD4+T cells with Ovalbumin(OVA),and Th2 cell ratios and IL-4 levels were assessed using flow cytometry and ELISA.Results:The purity of the isolated CD4+T cells was 95.73%,confirming successful isolation of primary CD4+T cells.Compared to the control group,the Th2 cell ratio exhibited an increase in the Th2-induced group.Treatment with 5-Aza(concentrations,1-100μM)promoted Th2 cell differentiation and increased IL-4 levels.Notably,when combined with Th2 induction and 10μM 5-Aza treatment,silencing MBD2 further amplified Th2 cell ratios and elevated IL-4 levels in cell supernatants.Furthermore,OVA(concentration,200μg/mL)induced the differentiation of CD4+T cells into Th2 cells and increased IL-4 secretion.Interestingly,silencing MBD2 significantly increased the Th2 cell ratio and IL-4 levels in OVA-treated CD4+T cells.Conclusion:In summary,OVA promoted CD4+T cell differentiation into Th2 cells and enhanced IL-4 levels.MBD2 was identified as a mediator of Th2 cell differentiation in splenic-derived CD4+T cells,influenced by OVA or 5-Aza treatment.QILU PAN YAN JIANG LINQIAO LI XIAOJING DU QIAN HAN FEIXIANG LING ROU LI SHUYUAN CHU LIN MAI JIANWEI HUANG LIBING MA 2023BIOCELL2023,47,11:0
7A semi-infinite beam theoretical model on predicting rock slope subsidence induced by underground mining显示文摘When the mining goaf is close to the cliff,rock slope subsidence induced by underground mining is significantly affected by its boundary conditions.In this study,an analytical method is proposed by considering the key strata as a semi-infinite Euler-Bernoulli beam rested on a Winkler foundation with a local subsidence area.The analytical solutions of deflection are derived by analyzing the boundary and continuity conditions of the cliff.Then,the analytical solutions are verified by the results from experimental tests,FEM and InSAR,respectively.After that,the influence of changing parameters on deflections is studied with sensitivity analysis.The results show that the distance between goaf and cliff significantly affects the deflection of semi-infinite beam.The response of semi-infinite beam is obviously determined by the length of goaf and the bending stiffness of beam.The comparisons between semi-infinite beam and infinite beam illustrate the ascendancy of the improved model in such problems.LIU Xinrong WANG Nanyun ZHONG Zuliang DU Libing LIANG Erwei 2024Journal of Mountain Science2024,21,2:0
8Accelerating hybrid and compact neural networks targeting perception and control domains with coarse-grained dataflow reconfiguration显示文摘Driven by continuous scaling of nanoscale semiconductor technologies,the past years have witnessed the progressive advancement of machine learning techniques and applications.Recently,dedicated machine learning accelerators,especially for neural networks,have attracted the research interests of computer architects and VLSI designers.State-of-the-art accelerators increase performance by deploying a huge amount of processing elements,however still face the issue of degraded resource utilization across hybrid and non-standard algorithmic kernels.In this work,we exploit the properties of important neural network kernels for both perception and control to propose a reconfigurable dataflow processor,which adjusts the patterns of data flowing,functionalities of processing elements and on-chip storages according to network kernels.In contrast to stateof-the-art fine-grained data flowing techniques,the proposed coarse-grained dataflow reconfiguration approach enables extensive sharing of computing and storage resources.Three hybrid networks for MobileNet,deep reinforcement learning and sequence classification are constructed and analyzed with customized instruction sets and toolchain.A test chip has been designed and fabricated under UMC 65 nm CMOS technology,with the measured power consumption of 7.51 mW under 100 MHz frequency on a die size of 1.8×1.8 mm^2.Zheng Wang Libing Zhou Wenting Xie Weiguang Chen Jinyuan Su Wenxuan Chen Anhua Du Shanliao Li Minglan Liang Yuejin Lin Wei Zhao Yanze Wu Tianfu Sun Wenqi Fang Zhibin Yu 2020Journal of Semiconductors2020,41,2:0
9Willingness of Caregivers to Have Their Children Vaccinated with Pneumococcal Vaccines in the Context of an Innovative Immunization Strategy—Weifang City,Shandong Province,2021显示文摘Summary What is already known about this topic?Pneumococcal diseases(PDs)pose a serious health threat to children.Vaccination is the most costeffective intervention to prevent PDs,but pneumococcal vaccines coverage among children is low in China.What is added by this report?This study investigated the willingness of children’s caregivers to have their children vaccinated with pneumococcal vaccines under an innovative policy to offer 1-dose of the 13-valent pneumococcal conjugate vaccines at no charge to families.The research found that 70.51%of caregivers were willing to have their infants receive pneumococcal vaccines and that reducing the cost of vaccines may increase caregivers’willingness.What are the implications for public health practice?This is the first evaluation in China of acceptance of pneumococcal vaccines among children under a 1-dose,cost-free policy.The results provide scientific evidence for updating local and national pneumococcal immunization strategies to promote the use of the pneumococcal vaccine.Yuan Yang Ting Zhang Yan Wang Libing Ma Shuyun Xie Jian Zhou Weiran Qi Qing Wang Peixi Dai Yuanze Du Luzhao Feng Chunping Wang Weizhong Yang 2022China CDC weekly2022,4,20:0
10Generation of irregular particle packing with prescribed statistical distribution, spatial arrangement, and volume fraction显示文摘A method for packing irregular particles with a prescribed volume fraction is proposed.Furthermore,the generated granular material adheres to the prescribed statistical distribution and satisfies the desired complex spatial arrangement.First,the irregular geometries of the realistic particles were obtained from the original particle images.Second,the Minkowski sum was used to check the overlap between irregular particles and place an irregular particle in contact with other particles.Third,the optimised advance front method(OAFM)generated irregular particle packing with the prescribed statistical dis-tribution and volume fraction based on the Minkowski sum.Moreover,the signed distance function was introduced to pack the particles in accordance with the desired spatial arrangement.Finally,seven biaxial tests were performed using the UDEC software,which demonstrated the accuracy and potential usefulness of the proposed method.It can model granular material efficiently and reflect the meso-structural characteristics of complex granular materials.This method has a wide range of applications where discrete modelling of granular media is necessary.Libing Du Xinrong Liu Yafeng Han Zhiyun Deng 2023Journal of Rock Mechanics and Geotechnical Engineering2023,15,2:0
11Factors Associated with PCV13 Vaccine Hesitancy in Parents under an Innovative Immunization Strategy:a Cross-Sectional Study—Weifang City,Shandong Province,China,2021显示文摘Summary What is already known on this topic?Pneumococcal diseases(PDs)are serious threats to child health.Although vaccination is one of the most effective ways to prevent these diseases,the pneumococcal vaccination coverage rate is still relatively low in China.What is added by this report?This study investigated the factors associated with 13-valent pneumococcal conjugate vaccine(PCV13)vaccine hesitancy in parents under an innovative immunization strategy.Yuanze Du Yan Wang Ting Zhang Libing Ma Shuyun Xie Yi Wang Yuan Yang Juanjuan Li Yushu Feng Yujue Wang Weiran Qi Weizhong Yang Jian Zhou Chunping Wang Luzhao Feng 2023China CDC weekly2023,5,12:0
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