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| 1 | Support technology for mine roadways in extreme weakly cemented strata and its application显示文摘For the engineering geology conditions of bad mine roadway roof and floor lithology in extremely weak cemented strata, the best section shape of the roadway is determined from the study of tunnel surrounding rock displacement, plastic zone and stress distribution in rectangular, circle arch and arch wall sections, respectively. Based on the mining depth and thickness of the coal seam, roadway support technology solutions with different buried depth and thickness of coal seam are proposed. Support schemes are amended and optimized in time through monitoring data of the deformation of roadway,roof separation, I-beam bracket, bolt and anchor cable force to ensure the long-term stability and security of the roadway surrounding rock and support structure. The monitoring results show that mine roadway support schemes for different buried depth and section can be adapted to the characteristics of ground pressure and deformation of the surrounding rock in different depth well, effectively control the roadway surrounding rock deformation and the floor heave and guarantee the safety of construction and basic stability of surrounding rock and support structure. | Meng Qingbin Han Lijun Qiao Weiguo Lin Dengge Fan Jiadong | 2014 | International Journal of Mining Science and Technology2014,24,2: | 23 |
| 2 | A cellular automata evacuation model considering friction and repulsion显示文摘There exist interactions among pedestrians and between pedestrian and environment in evacuation. These interactions include attraction, repulsion and friction that play key roles in human evacuation behaviors, speed and efficiency. Most former evacuation models focus on the attraction force, while repulsion and friction are not well modeled. As a kind of multi-particle self-driven model, the social force model introduced in recent years can represent those three forces but with low simulation efficiency because it is a continuous model with complex rules. Discrete models such as the cellular automata model and the lattice gas model have simple rules and high simulation efficiency, but are not quite suitable for interactions’ simulation. In this paper, a new cellular automata model based on traditional models is introduced in which repulsion and friction are modeled quantitatively. It is indicated that the model can simulate some basic behaviors, e.g. arching and the “faster-is-slower” phenomenon, in evacuation as multi-particle self-driven models, but with high efficiency as the normal cellular automata model and the lattice gas model. | SONG Weiguo YU Yanfei FAN Weicheng Zhang Heping | 2005 | Science China(Technological Sciences)2005,48,4: | 19 |
| 3 | Self-organized criticality of forest fires in China显示文摘Self-organized criticality(SOC) of forest fires in China from 1950 to 1989 is studied. The stability, scale-invariant character of SOC and external effects on SOC of forest fires in China are analyzed in detail. Forest-fire cellular automata model is a typical model for the research of SOC. Based on the traditional forest-fire model, an improved model, in which effects of tree species, meteorological conditions and human efforts on forest fires are considered, is introduced. Actual forest fire data in China are compared with simulation results of the two models. It is shown that forest fire data in China have SOC behavior and simulation results of the improved model accord better with actual forest fire data than those of the traditional model. | Song Weiguo Fan Weicheng Wang Binghong | 2001 | Chinese Science Bulletin2001,46,13: | 15 |
| 4 | The temperature-dependent fracture strength model for ultra-high temperature ceramics显示文摘毁坏材料的全部结构暗示由使用工作或由热转移切断在它的原子之间的所有契约。因为打破契约对任何一个工具冷淡,在热能和紧张精力之间有一种等价。把等价基于这,我们假定包括紧张精力和相应等价物的精力的经常的最大的存储的存在热能。一个温度依赖者破裂力量模型然后被开发为超离频温度陶艺(UHTC ) 。为 UHTC, HfB2, TiC 和 ZrB2 的模型预言,被介绍并且与试验性的结果相比。这些预言被发现与试验性的结果大部分一致。关键词超离频温度陶艺 - 相等的精力 - 批评失败精力 - 力量模型工程被中国(90505015 和 10702035 ) 的国家自然科学基础支持。 | Weiguo Li Fan Yang Daining Fang | 2010 | Acta Mechanica Sinica2010,26,2: | 12 |
| 5 | Credit Risk Transfer in SME Loan Guarantee Networks显示文摘Joint loan guarantee contracts and mutual guarantee contracts among SMEs form the basis of SME guarantee networks. The expansion of these networks increases the fragility of a financial system as a result of the regional and industrial risk contagion embedded within them. By providing a theoretical framework of a loan guarantee network, a method is proposed for calculating the amount of risk spillover caused by loan guarantees taking the perspective of the entire network. In addition,the route of risk contagion in guarantee networks is analyzed, revealing that when default risk shocks occur, risk contagion travels along the nodes not once but for several rounds and that the risk control of one firm cannot prevent these systemic risks. Therefore, a risk control scheme is designed based on the location and importance of firms in the network. Using data from a real guarantee network,we demonstrate that identifying the node locations of firms' in the guarantee network(including the coritivity and closeness of the firm) can help in understanding risk contagion mechanisms and preventing systemic credit risk before a crisis occurs. | LENG Aolin XING Guangyuan FAN Weiguo | 2017 | Journal of Systems Science & Complexity2017,30,5: | 10 |
| 6 | Influences of finite-size effects on the self-organized critical-ity of forest-fire model显示文摘The influences of finite-size effects on the self-organized criticality (SOC) of the traditional forest-fire model are investigated by means of a new method. The forest size is originally set to a value much greater than the correla-tion length of the forest. Finite-size effects are then studied by equally dividing the forest into more and more separate subsystems on condition that the forest size, igniting prob-ability and planting probability are invariant. A new phe-nomenon, i.e. the finite-size effects with one-side frequency peak, is observed. The boundary between two neighboring subsystems can be regarded as a firebreak. The concept of ’separation ability’ is introduced to represent the probability for the firebreak to block off the fire successfully. Restrain-ing effects of separation ability on finite-size effects are ana-lyzed. Finite-size effects and separation ability, as well as their relations are found to have practical importance to the actual forest-fire protection. | Weiguo Song Weicheng Fan Binghong Wang | 2002 | Chinese Science Bulletin2002,47,3: | 9 |
| 7 | A new distinct geminivirus causes soybean stay-green disease显示文摘Dear Editor,Plant viruses make up almost half of the plant disease-causing pathogens,affecting crop yields and the global economy(Savary et al.,2019).Soybean(Glycine max)is one of the most valuable legume crops in the world,supplying 25%of the global edible oil and two-thirds of the global concentrated protein for livestock feeding.Recently,the outbreak of soybean stay-green syndrome with delayed leaf senescence(stay-green),flat pods,and increased number of abnormal seeds has swept the soybean production in the Huang-Huai-Hai region of China,resulting in huge yield losses(Xu et al.,2019).This disease has become an epidemic and prominent problem in soybean production and is still expanding its geography,including North America,posing a serious threat to soybean production(Harbach et al.,2016;Zhang et al.,2016;Li et al.,2019).However,the cause of soybean stay-green syndrome remains obscure. | Ruixiang Cheng Ruoxin Mei Rong Yan Hongyu Chen Dan Miao Lina Cai Jiayi Fan Gairu Li Ran Xu Weiguo Lu Yu Gao Wenwu Ye Shuo Su Tianfu Han Junyi Gai Yuanchao Wang Xiaorong Tao Yi Xu | 2022 | Molecular Plant2022,15,6: | 6 |
| 8 | Improving MapReduce Performance by Balancing Skewed Loads显示文摘MapReduce has emerged as a popular computing model used in datacenters to process large amount of datasets.In the map phase,hash partitioning is employed to distribute data that sharing the same key across data center-scale cluster nodes.However,we observe that this approach can lead to uneven data distribution,which can result in skewed loads among reduce tasks,thus hamper performance of MapReduce systems.Moreover,worker nodes in MapReduce systems may differ in computing capability due to(1) multiple generations of hardware in non-virtualized data centers,or(2) co-location of virtual machines in virtualized data centers.The heterogeneity among cluster nodes exacerbates the negative effects of uneven data distribution.To improve MapReduce performance in heterogeneous clusters,we propose a novel load balancing approach in the reduce phase.This approach consists of two components:(1) performance prediction for reducers that run on heterogeneous nodes based on support vector machines models,and(2) heterogeneity-aware partitioning(HAP),which balances skewed data for reduce tasks.We implement this approach as a plug-in in current MapReduce system.Experimental results demonstrate that our proposed approach distributes work evenly among reduce tasks,and improves MapReduce performance with little overhead. | FAN Yuanquan WU Weiguo XU Yunlong CHEN Heng | 2014 | China Communications2014,11,8: | 4 |
| 9 | Exceptional mechanical properties of AZ31 alloy wire by combination of cold drawing and EPT显示文摘A 0.66 mm-diameter AZ31 alloy wire with ultimate tensile strength of 400 MPa and elongation of 28.5%was successfully prepared via the combination of cold-drawing and electropulsing treatment processing(EPT).Microstructure observation showed that the grain size of EPTed samples was refined to about 1μm and the basal texture strength with maxima texture index was weakened to 7.18.EPT can significantly accelerate recrystallization by enhancing the mobility of dislocation and atomic diffusion due to the coupling of the thermal and athermal effects.Finally,uniform ultrafine-grained structure was obtained in the EPTed samples by static recrystallization completed in a very short time(30 s)at relatively low temperature(433 K). | Zhaohui Shan Jing Bai Jianfeng Fan Hongfei Wu Hua Zhang Qiang Zhang Yucheng Wu Weiguo Li Hongbiao Dong Bingshe Xu | 2020 | Journal of Materials Science & Technology2020,47,16: | 3 |
| 10 | Effect of stimulating the acupoints Feishu (BL 13) and Dazhui (GV14) on transdermal uptake of sinapine thiocyanate in asthma gel显示文摘OBJECTIVE: To investigate the effect of stimulating the acupoints Feishu(BL 13) and Dazhui(GV 14) on the transdermal uptake of sinapine thiocyanate contained in a gel used for the management of asthma.METHODS: Thirty Sprague-Dawley rats were randomly divided into three equal groups using a random number table: the Feishu(BL 13) acupoint group, the Dazhui(GV 14) acupoint group, and the nonacupoint group or control group. Using micro-dialysis technology, preprocessed skin probes were implanted into the rats at Feishu(BL 13), Dazhui(GV 14), and a nonacupoint site. Asthma gel was then placed on the skin at Feishu(BL 13), Dazhui(GV14) acupoints, and the nonacupoint for all groups.Dialysate was collected every 30 min for 12 h. The normalized concentration of sinapine thiocyanate in the skin was determined by high-performance liquid chromatography.RESULTS: The rat in vivo transdermal experiment demonstrated that the quantity-time equation showed a good linear correlation with zero-order kinetics(r > 0.99). The transdermal behavior was in accordance with the first-order rate open model in which the transdermal penetration rates and the accumulative amounts of sinapine thiocyanate in the skin at the acupoint sites were greater than those through the skin of the nonacupoint site. The systemic maximum concentration and the area under the curve of sinapine thiocyanate in the acupoint groups were significantly greater than in the nonacupoint group. A lag time was observed in both acupoint groups, but not in the nonacupoint group.CONCLUSION: Stimulating the acupoints promotes the percutaneous absorption of sinapine thiocyanate and also controls its release, reducing concentration fluctuations in the blood. | Fan Wentao Huang Yuwei Wang Lisheng Liao Weiguo Li Zhou Wu Yinai Liao Fengyun Yu Jianye Liu Qiang | 2017 | Journal of Traditional Chinese Medicine2017,37,4: | 3 |
| 11 | High-performance all-polymer solar cells enabled by a novel low bandgap non-fully conjugated polymer acceptor显示文摘The non-fully conjugated polymer as a new class of acceptor materials has shown some advantages over its small molecular counterpart when used in photoactive layers for all-polymer solar cells(all-PSCs),despite a low power conversion efficiency(PCE)caused by its narrow absorption spectra.Herein,a novel non-fully conjugated polymer acceptor PFY-2TS with a low bandgap of~1.40 eV was developed,via polymerizing a largeπ-fused small molecule acceptor(SMA)building block(namely YBO)with a non-conjugated thioalkyl linkage.Compared with its precursor YBO,PFY-2TS retains a similar low bandgap but a higher LUMO level.Moreover,compared with the structural analog of YBO-based fully conjugated polymer acceptor PFY-DTC,PFY-2TS shows a similar absorption spectrum and electron mobility,but significantly different molecular crystallinity and aggregation properties,which results in optimal blend morphology with a polymer donor PBDB-T and physical processes of the device in all-PSCs.As a result,PFY-2TS-based all-PSCs achieved a PCE of 12.31%with a small energy loss of 0.56 eV enabled by the reduced non-radiative energy loss(0.24 eV),which is better than that of 11.08%for the PFY-DTC-based ones.Our work clearly demonstrated that non-fully conjugated polymers as a new class of acceptor materials are very promising for the development of high-performance all-PSCs. | Qunping Fan Ruijie Ma Tao Liu Jianwei Yu Yiqun Xiao Wenyan Su Guilong Cai Yuxiang Li Wenhong Peng Tao Guo Zhenghui Luo Huiliang Sun Lintao Hou Weiguo Zhu Xinhui Lu Feng Gao Ellen Moons Donghong Yu He Yan Ergang Wang | 2021 | Science China Chemistry2021,64,8: | 3 |
| 12 | Investigation on the syntheses and structures of Y^(Ⅲ) complexes with ami-nopolycarboxylic acids (Ⅳ)显示文摘This paper deals with the structure of the Y^Ⅲ complex with aminopolycarboxylic acids, synthesis and structural determination of the complex (NH4)[YⅢ(edta)(H2O)3]·3H2O (edta = ethylenediaminetetraacetic acid). The crystaland molecular structures of the (NHO[YⅢ(edta)(H2O)3]·3H20 complex have been determined by single-crystal X-raystructure analysis. The crystal of the complex (NH4)[YⅢ(edta)(H2O)3]·3H2O belongs to orthorhombic crystal system and fdd2 space group. The crystal data are as follows: a = 1.944 1 (9) nm, b = 3.545 9(18) nm, c = 1.219 6(6) nm, V = 8.407(7) nm3, Z = 16, M~= 503.25, Dc = 1.590 g. cm 3,μ= 2.844 mm-1 and F(000) = 4 160. The final R and Rw are 0.048 6 and 0.133 2 for 3 388 (I>2σ(I)) unique reflections, respectively. The complex anion [YⅢ(edta)(H2O)3] has a pseudo-mono-capped square an tiprismatic nine-coordinate structure in which the six coordinate atoms (two N and four O) are from anedta ligand and three water molecules coordinate to the central YⅢ ion directly. From the results it can be predicted that the ym ion can also form a nine-coordinate complex with ttha (=triethylenetetraminehexaacetic acid) ligand, so the radioactive complex anion [99YⅢ(Httha)]2- can supply a free carboxyl group (-CH2COOH) being used for molecular embellishment to form the TDDS for the treatment of cancers. | WANG Jun, ZHANG Xiangdong, LING Xiao, JIA Weiguo, and FAN DaminDepartment of Chemistry, Liaoning University, Shenyang, 110036, China | 2002 | Rare Metals2002,21,2: | 3 |
| 13 | Effect of electropulsing treatment on static recrystallization behavior of cold-rolled magnesium alloy ZK60 with different reductions显示文摘Effect of electropulsing treatment(EPT) on recrystallization behavior of cold-rolled Mg alloy ZK60 strips was investigated. It was found that EPT significantly improved nucleation rate and migration ability of grain boundaries, leading to accelerated recrystallization of the deformed metals at relatively low temperature. After the recrystallization induced by EPT, the average grain size of 20% rolling reduction samples decreased from 113 um to around 10 um, meanwhile the typical basal-type texture of the coldrolled sample was weakened. EPT was normally accompanied with a thermal and an athermal effects. The athermal effect played a dominated role in increasing nucleation rate, while the thermal effect promoted grain growth. A fewer recrystallized grains originated along the grain boundaries in the 10% reduction samples, while most of the recrystallization took place inside the twins in the 20% reduction samples. | Huijun Guo Xun Zeng Jianfeng Fan Hua Zhang Qiang Zhang Weiguo Li Hongbiao Dong Bingshe Xu | 2019 | Journal of Materials Science & Technology2019,35,6: | 2 |
| 14 | Apoptosis of human colorectal carcinoma cells is induced by blocking hepatoma-derived growth factor显示文摘 | Fei Liao Weiguo Dong Lifang Fan | 2010 | Medical Oncology2010,,4: | 2 |
| 15 | miR-34a regulates cisplatin-induce gastric cancer cell death by modulating PI3K/AKT/survivin pathway显示文摘 | Weiguo Cao Weiping Yang Rong Fan Hao Li Jinsong Jiang Mei Geng Yening Jin Yunlin Wu | 2014 | Tumor Biology2014,,2: | 2 |
| 16 | Compressive behavior and rate-controlling mechanisms of ultrafine grained copper over wide temperature and strain rate ranges显示文摘 | Tao Suo Yulong Li Feng Zhao Xueling Fan Weiguo Guo | 2013 | Mechanics of Materials2013,,: | 1 |
| 17 | Thermal shock modeling of ultra-high temperature ceramics under active cooling 显示文摘 | LI Weiguo YANG Fan FANG Daining | 2009 | Computers and Mathematics with Applications2009,58,1112: | 1 |
| 18 | Directed evo-lution for increased chitinase activity显示文摘 | Yanhua Fan Weiguo Fang Yuehua Xiao | 2007 | Appl Microbiol Bio-technol2007,76,: | 1 |
| 19 | HTR2A agonists play a therapeutic role by restricting ILC2 activation in papain-induced lung inflammation显示文摘Group 2 innate lymphoid cells(ILC2s)are a category of heterogeneous cells that produce the cytokines IL-5 and IL-13,which mediate the type 2 immune response.However,specific drug targets on lung ILC2s have rarely been reported.Previous studies have shown that type 2 cytokines,such as IL-5 and IL-13,are related to depression.Here,we demonstrated the negative correlation between the depression-associated monoamine neurotransmitter serotonin and secretion of the cytokines IL-5 and IL-13 by ILC2s in individuals with depression.Interestingly,serotonin ameliorates papain-induced lung inflammation by suppressing ILC2 activation.Our data showed that the serotonin receptor HTR2A was highly expressed on ILC2s from mouse lungs and human PBMCs.Furthermore,an HTR2A selective agonist(DOI)impaired ILC2 activation and alleviated the type 2 immune response in vivo and in vitro.Mice with ILC2-specific depletion of HTR2A(Il5^(cre/+)·Htr2a^(flox/flox)mice)abolished the DOI-mediated inhibition of ILC2s in a papain-induced mouse model of inflammation.In conclusion,serotonin and DOI could restrict the type 2 lung immune response,indicating a potential treatment strategy for type 2 lung inflammation by targeting HTR2A on ST2+ILC2s. | Zhishuo Wang Chenghua Yan Qizhen Du Yuying Huang Xuezhen Li Dan Zeng Ruizhi Mao Rama Krishna Gurram Shipeng Cheng Wangpeng Gu Lin Zhu Weiguo Fan Liyan Ma Zhiyang Ling Ju Qiu Dangsheng Li Enmei Liu Yaguang Zhang Yiru Fang Jinfang Zhu Bing Sun | 2023 | Cellular & Molecular Immunology2023,20,4: | 1 |
| 20 | The joint moderating role of trust propensity and gender on consumers ' online shopping behavior显示文摘 | Chen Yue Yan Xiangbin Fan Weiguo | 2015 | Computers in Human Behavior2015,43,2: | 1 |