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| 1 | Modeling stationary and moving cracks in shells by X-FEM with CB shell elements显示文摘The continuum-based(CB)shell theory is combined with the extended finite element method(X-FEM)in this paper to model crack propagation in shells under static and dynamic situations.Both jump function and asymptotic crack tip solution are adopted for describing the discontinuity and singularity of the crack in shells.Level set method(LSM)is used to represent the crack surface and define the enriched shape functions.Stress intensity factors(SIFs)are calculated by the displacement interpolation technique to prove the capability of the method and the maximum strain is applied for the fracture criterion.Also,an efficient integration scheme for the CB shell element with cracks is proposed. | ZENG QingLei LIU ZhanLi XU DanDan ZHUANG Zhuo | 2014 | Science China(Technological Sciences)2014，57，7： | 7 |
| 2 | Characterization on jointed rock masses based on PFC2D显示文摘Geometrical parameters of discontinuities,such as spacing,length,dip and fault throw between joints have a great influence on the mechanical behavior of jointed rock masses.Accurate characterization for discontinuities is important for investigate the stability of rock masses.In this paper,the PFC2D is combined with joint network generation method to examine the mechanical behaviors of jointed mass.Taking Miaogou Open-pit Mine as an example,the information and statistical distributions of discontinuities of the slope rock masses are measured by ShapeMetriX3D measuring tool.Then,the automatic generation algorithm of random joints network based on the Monte-Carlo method is proposed using the programming language(FISH)embedded within PFC2D.This algorithm could represent the discontinuities compared with the geological surveys.In simulating the compression test of a jointed rock sample,the mechanical behavior and crack propagation were investigated.The results reveal that the failure mode and crack propagation of the jointed rock are dominated by the distribution of joints in addition to the intact rock properties.The simulation result shows the feasibility of the joints generating method in application to jointed rock mass. | Peitao WANG Tianhong YANG Qinglei YU Honglei LIU Penghai ZHANG | 2013 | Frontiers of Structural and Civil Engineering2013，7，1： | 5 |
| 3 | Bifunctional carbon-based cathode catalysts for zinc-air battery: A review显示文摘Efficient bifunctional OER/ORR catalysts are crucial for the further development of zinc-air battery. From a sustainable point of view, it is important that electrocatalysts are efficient, low cost, and composed of abundant resources instead of scarce metals. Due to their good conductivity, low cost, and strong durability, carbon-based materials are considered a promising alternative in the field of commercial zinc-air battery catalysts. Herein, we briefly introduce the zinc-air battery and then summarize recent progress in the development of carbon-based bifunctional catalysts by defect engineering, heteroatom doping and metal doping. Finally, we discuss the main challenges and prospects for the future development of carbon-based bifunctional oxygen catalysts. | Huimin Liu Qinglei Liu Yarong Wang Yongfei Wang Shulei Chou Zhizhi Hu Zhiqiang Zhang | 2022 | Chinese Chemical Letters2022，33，2： | 3 |
| 4 | Serum semaphorin 4C as a diagnostic biomarker in breast cancer:A multicenter retrospective study显示文摘Background:To date,there is no approved blood-based biomarker for breast cancer detection.Herein,we aimed to assess semaphorin 4C(SEMA4C),a pivotal protein involved in breast cancer progression,as a serum diagnostic biomarker.Methods:We included 6,213 consecutive inpatients from Tongji Hospital,Qilu Hospital,and Hubei Cancer Hospital.Training cohort and two validation cohorts were introduced for diagnostic exploration and validation.A pan-cancer cohort was used to independently explore the diagnostic potential of SEMA4C among solid tumors.Breast cancer patients who underwent mass excision prior to modified radical mastectomy were also analyzed.We hypothesized that increased pretreatment serum SEMA4C levels,measured using optimized in-house enzymelinked immunosorbent assay kits,could detect breast cancer.The endpoints were diagnostic performance,including area under the receiver operating characteristic curve(AUC),sensitivity,and specificity.Post-surgery pathological diagnosis was the reference standard and breast cancer staging followed the TNM classification.There was no restriction on disease stage for eligibilities.Results:We included 2667 inpatients with breast lesions,2378 patients with other solid tumors,and 1168 healthy participants.Specifically,118 patients with breast cancer were diagnosed with stage 0(5.71%),620 with stage I(30.00%),966 with stage II(46.73%),217 with stage III(10.50%),and 8 with stage IV(0.39%).Patients with breast cancer had significantly higher serum SEMA4C levels than benign breast tumor patients and normal controls(P<0.001).Elevated serum SEMA4C levels had AUC of 0.920(95%confidence interval[CI]:0.900–0.941)and 0.932(95%CI:0.911–0.953)for breast cancer detection in the two validation cohorts.The AUCs for detecting early-stage breast cancer(n=366)and ductal carcinoma in situ(n=85)were 0.931(95%CI:0.916–0.946)and 0.879(95%CI:0.832–0.925),respectively.Serum SEMA4C levels significantly decreased after surgery,and the reduction was more striking after modified radical mastectomy,compared with mass excision(P<0.001).The positive rate of enhanced serum SEMA4C levels was 84.77%for breast cancer and below 20.75%for the other 14 solid tumors.Conclusions:Serum SEMA4C demonstrated promising potential as a candidate biomarker for breast cancer diagnosis.However,validation in prospective settings and by other study groups is warranted. | Ya Wang Long Qiao Jie Yang Xiong Li Yaqi Duan Jiahao Liu Shaoqi Chen Huayi Li Dan Liu Tian Fang Jingjing Ma Xiaoting Li Fei Ye Junxiang Wan Juncheng Wei Qin Xu Ensong Guo Ping Jin Mingfu Wu Lin Zhang Yun Xia Yaqun Wu Jun Shao Yaojun Feng Qing Zhang Zongyuan Yang Gang Chen Qinghua Zhang Xingrui Li Shixuan Wang Junbo Hu Xiaoyun Wang Mona P.Tan Kazuaki Takabe Beihua Kong Qifeng Yang Ding Ma Qinglei Gao | 2021 | Cancer Communications2021，41，12： | 3 |
| 5 | Oxygen-vacancy-rich TiO_(2)enables highly active and durable water electrolysis of urchin-like RuO_(2)catalyst显示文摘The material innovation is prerequisite to accelerating sluggish oxygen evolution reaction(OER)kinetics,thus promoting the realization of hydrogen energy community.Herein,we develop an oxygen-vacancy-rich TiO_(2)supported RuO_(2)catalyst(RuO_(2)@r-TiO_(2))towards improved OER activity and stability.The oxygen vacancy on TiO_(2)not only supplies electrons to produce lower valence Ru,but also provides sufficient anchoring site for the deposition of RuO_(2)nanocrystal.Beyond that,it can generate strong electronic interaction between TiO_(2)and supported RuO_(2),and thereby tailors the intermediates’adsorption energy on the RuO_(2)surface.As a result,the derived RuO_(2)@r-TiO_(2)catalyst exhibits superior OER activity and stability with the overpotential of 211 mV at a current density of 10 mA cm^(−2)and negligible activity degradation after 6 h operation,outperforming the non-oxygen-vacancy counterpart(223.3 mV,12.75%activity loss)and RuO_(2)catalyst(234.6 mV,42.86%activity loss). | GAO HongMei XIAO MeiLing LI GuoQiang GAO LiQin MENG QingLei LUO ZhaoYan LUO ErGui LIU ChangPeng JIN Zhao GE JunJie XING Wei | 2022 | Science China(Technological Sciences)2022，65，10： | 3 |
| 6 | Liquid metal fractals induced by synergistic oxidation显示文摘Ga-based liquid metal has drawn attention in the field of interface science due to its large deformability.However, the spreading and shaping of liquid metal still remain a huge challenge to be solved owing to its large surface tension.Here, an intriguing synergistic oxidation-driven liquid metal fractal phenomenon was discovered and the general mechanisms were interpreted, which provides a new strategy for manipulating liquid metal.Experimental results demonstrate that the liquid metal placed on the graphite plate exhibited fractal characteristics with the addition of hydrogen peroxide.Here, it is of significance that hydrogen peroxide and graphite plates synergistically oxidize liquid metal.In addition, we predicted that liquid metal fractals can also be achieved on other eligible substrates based on the proposed general mechanism, which was confirmed by relevant experiments.Furthermore, the fractal dimensions of liquid metal fractal pattern were obtained and evaluated, distinguishing the synergistic oxidation-driven liquid metal fractals from the voltage-driven liquid metal fractals.Besides, we initially gave the best concentration range in which dendritic fractals can occur in order to guide practice.The ability to achieve liquid metal fractals promises rich opportunities in freely driving the liquid metal for soft machines and manufacturing the shape-reconfigurable electronic circuits. | Sen Chen Lei Wang Qinglei Zhang Jing Liu | 2018 | Science Bulletin2018，63，22： | 3 |
| 7 | Biocompatible, small-sized and well-dispersed gold nanoparticles regulated by silk fibroin fiber from Bombyx mori cocoons显示文摘Biocompatible, small-sized but well-dispersed gold nanoparticles (Au NPs) remain a major challenge for their synthesis. Here a convenient solution impregnation technique is developed to prepare such Au NPs under the regulation of degummed silk fibroin fibers (SFFs) extracted from Bombyx mori cocoons. SFFs play multiple roles in the formation of Au NPs such as reactive substrate to capture AuCl4^- ions by the chelation of -C = 0, reducing agent for Au(0) by the reduction of -OH , and modifiers to render biocompatible Au NPs by some functional groups and biomolecules. The as-prepared Au NPs with a size of 7-10 nm are embedded in the solid SFF substrate, and can disperse well in the liquid system by the disintegration of SFFs into silk fibroin (SF) in a certain CaCl2 solution. The biocompatible Au NPs exhibit uniform small size and distribute stably in both solid and solution states, which have distinctive properties and functional advantages, and bring great convenience to their storage and transportation. | Chengzhi YANG Shikun CHEN Huilan SU Haoyue ZHANG Jianfei TANG Cuiping GUO Fang SONG Wang ZHANG Jiajun GU Qinglei LIU | 2019 | Frontiers of Materials Science2019，13，2： | 2 |
| 8 | Experimental study on the effect of granular backfill with various gradations on the mechanical behavior of rock显示文摘Backfilling is a common practice in the mining industry and the backfilling performance plays a significant role in supporting the surrounding rock mass.To evaluate the backfilling performance,an experimental apparatus has been developed to understand how backfill affects the compressive strength of sandstone specimens in the laboratory.Pebbles were selected to model the backfill and divided into six groups with different particle sizes using a set of standard sieves.The backfilling pebbles with three types of particle size compositions were then produced,i.e.single gradation,two adjacent gradations,and increasingly widening gradations.A series of compressive tests were carried out to study the mechanical behavior of the sandstone specimens confined by these pebbles.The effects of the gradations of the filled pebbles on the peak and residual compressive strengths were analyzed.It is found that the increasing amount of the compressive strength is over 10%in most cases,even up to 20%.Based on the experiment data,the increasing amount was also estimated theoretically under some assumptions and it further confirmed the experimental results.The effects are closely related to the gradations of the filled pebbles except for their dense degree. | Zhihua Le Qinglei Yu Wancheng Zhu Hongyuan Liu Tianhong Yang | 2021 | International Journal of Mining Science and Technology2021，31，5： | 2 |
| 9 | Thermal evaluation of the injectable liquid metal bone cement in orthopedic treatment显示文摘The thermophysical properties of bone cement are important parameters for its application in the orthopedic treatment. This article focused on the thermal evaluation of the low-melting-point metal(Bi In Sn alloy), which has been proved to be an excellent bone cement. Firstly, the basic thermophysical properties of Bi In Sn alloys with different melting points were measured.Secondly, 15 fresh porcine femurs placed in the saline bath, bone cements with different melting points and amounts were injected into the bone cavities, respectively. Thermocouples were used to measure the temperature changes of the bone-cement interface and peripheral bone tissue. The possibility of thermal necrosis was evaluated. Moreover, a three-dimensional human knee model was built to numerically assess the effects of thermal parameters, such as melting point and latent heat on tissue temperature distribution. All the experimental and numerical results implied the heat distribution in the tissue depended on the thermal performances of liquid metal bone cement(LMBC). For LMBC of the same melting point, with increased amounts, the damage to the bone tissue is more severe, while for the same amount of different melting point LMBCs, with the higher melting point, which will lead to more serious damage to the tissue. Also, higher latent heat of LMBC has distinct longer solidification process, which may cause irreversible damage to surrounding tissues. Therefore, in the future, for different clinical surgery needs, the appropriate liquid metal bone cement can be obtained by adjusting the thermal parameters. | ZHANG QingLei YAO YuChen GAO JianYe YANG XiaoHu ZHANG PengJu DENG ZhongShan LIU Jing | 2020 | Science China(Technological Sciences)2020，63，3： | 1 |
| 10 | Synthesis of the composite material Y/ASA and its catalytic performance for the cracking ofn-decane显示文摘 | Meng Qinglei Liu Baijun Piao Jiarui | 2012 | J Catal2012，290，1： | 1 |
| 11 | Expression and functional analysis of liver receptor homologue 1 as a potential steroidogenic factor in rat ovary显示文摘 | Liu Donglin Liu Wenzhe Li Qinglei | 2003 | Biology of Reproduction2003，69，： | 1 |
| 12 | XFEM modeling of hydraulic fracture in porous rocks with natural fractures显示文摘Hydraulic fracture(HF) in porous rocks is a complex multi-physics coupling process which involves fluid flow, diffusion and solid deformation. In this paper, the extended finite element method(XFEM) coupling with Biot theory is developed to study the HF in permeable rocks with natural fractures(NFs). In the recent XFEM based computational HF models, the fluid flow in fractures and interstitials of the porous media are mostly solved separately, which brings difficulties in dealing with complex fracture morphology. In our new model the fluid flow is solved in a unified framework by considering the fractures as a kind of special porous media and introducing Poiseuille-type flow inside them instead of Darcy-type flow. The most advantage is that it is very convenient to deal with fluid flow inside the complex fracture network, which is important in shale gas extraction. The weak formulation for the new coupled model is derived based on virtual work principle, which includes the XFEM formulation for multiple fractures and fractures intersection in porous media and finite element formulation for the unified fluid flow. Then the plane strain Kristianovic-Geertsma-de Klerk(KGD) model and the fluid flow inside the fracture network are simulated to validate the accuracy and applicability of this method. The numerical results show that large injection rate, low rock permeability and isotropic in-situ stresses tend to lead to a more uniform and productive fracture network. | Tao Wang ZhanLi Liu QingLei Zeng Yue Gao Zhuo Zhuang | 2017 | Science China(Physics,Mechanics & Astronomy)2017，60，8： | 1 |
| 13 | N-doped porous carbon with magnetic particles formed in situ for enhanced Cr(VI) removal显示文摘 | Yao Li Shenmin Zhu Qinglei Liu Zhixin Chen Jiajun Gu Chengling Zhu Tao Lu Di Zhang Jun Ma | 2013 | Water Research2013，，12： | 1 |
| 14 | Preparation of magnetic molecularly imprinted polymer for the separation of tetracycline antibiotics from egg and tissue samples显示文摘 | Ligang Chen Jun Liu Qinglei Zeng Hui Wang Aimin Yu Hanqi Zhang Lan Ding | 2009 | Journal of Chromatography A2009，，18： | 1 |
| 15 | Butterfly wing architectures inspire sensor and energy applications显示文摘Natural biological systems are constantly developing efficient mechanisms to counter adverse effects of increasing human population and depleting energy resources.Their intelligent mechanisms are characterized by the ability to detect changes in the environment,store and evaluate information,and respond to external stimuli.Bio-inspired replication into man-made functional materials guarantees enhancement of characteristics and performance.Specifically,butterfly architectures have inspired the fabrication of sensor and energy materials by replicating their unique micro/nanostructures,light-trapping mechanisms and selective responses to external stimuli.These bio-inspired sensor and energy materials have shown improved performance in harnessing renewable energy,environmental remediation and health monitoring.Therefore,this review highlights recent progress reported on the classification of butterfly wing scale architectures and explores several bio-inspired sensor and energy applications. | Maurice I.Osotsi Wang Zhang Imran Zada Jiajun Gu Qinglei Liu Di Zhang | 2021 | National Science Review2021，8，3： | 1 |
| 16 | Artificial neuron synapse transistor based on silicon nanomembrane on plastic substrate显示文摘Silicon nanomembrane(SiNM)transistors gated by chitosan membrane were fabricated on plastic substrate to mimic synapse behaviors.The device has both a bottom proton gate(BG)and multiple side gates(SG).Electrical transfer properties of BG show hysteresis curves different from those of typical SiO_2 gate dielectric.Synaptic behaviors and functions by linear accumulation and release of protons have been mimicked on this device:excitatory post-synaptic current(EPSC)and paired pulse facilitation behavior of biological synapses were mimicked and the paired-pulse facilitation index could be effectively tuned by the spike interval applied on the BG.Synaptic behaviors and functions,including short-term memory and long-term memory,were also experimentally demonstrated in BG mode.Meanwhile,spiking logic operation and logic modulation were realized in SG mode. | Minjie Liu Gaoshan Huang Ping Feng Qinglei Guo Feng Shao Ziao Tian Gongjin Li Qing Wan Yongfeng Mei | 2017 | Journal of Semiconductors2017，38，6： | 1 |
| 17 | Electromagnetic wave absorption properties of porous carbon/Co nanocomposites 显示文摘 | LIU QINGLEI ZHANG DI FAN TONGXIANG | 2008 | Applied Physics Letters2008，93，01： | 1 |
| 18 | Isolation and purification of four flavonoid constituents from the flowers of Paeonia suffruticosa by high-speed counter-current chromatography显示文摘 | Xiao Wang Chuange Cheng Qinglei Sun Fuwei Li Jianhua Liu Chengchao Zheng | 2005 | Journal of Chromatography A2005，，1： | 1 |
| 19 | Study on interaction between induced and natural fractures by extended finite element method显示文摘Fracking is one of the kernel technologies in the remarkable shale gas revolution. The extended finite element method is used in this paper to numerically investigate the interaction between hydraulic and natural fractures, which is an important issue of the enigmatic fracture network formation in fracking. The criteria which control the opening of natural fracture and crossing of hydraulic fracture are tentatively presented. Influence factors on the interaction process are systematically analyzed, which include the approach angle, anisotropy of in-situ stress and fluid pressure profile. | DanDan Xu ZhanLi Liu Zhuo Zhuang QingLei Zeng Tao Wang | 2017 | Science China(Physics,Mechanics & Astronomy)2017，60，2： | 0 |
| 20 | Assessment of Atmospheric Reanalysis Data Based on Buoy Observations over the Tropical Western Indian Ocean in 2019显示文摘Atmospheric reanalysis data are an important data source for studying weather and climate systems.The sea surface wind and sea level pressure observations measured from a real-time buoy system deployed in Kenya’s offshore area in 2019 conducted jointly by Chinese and Kenyan scientists were used to evaluate the performance of the major high-frequency atmospheric reanalysis products in the western Indian Ocean region.Compared with observations,the sea level pressure field could be accurately simulated using the atmospheric reanalysis data.However,significant discrepancies existed between the surface wind reanalysis data,especially between meridional wind and the observational data.Most of the data provide a complete understanding of sea level pressure,except for the Japanese 55-year Reanalysis data,which hold a significant system bias.The Modern-Era Reanalysis for Research and Applications,Version-2,provides an improved description of all datasets.All the reanalysis datasets for zonal wind underestimate the strength during the study period.Among reanalysis data,NCEP-DOE Atmospheric Model Intercomparison Project reanalysis data presents an inaccurate description due to the worst correlation with the observations.For meridional wind,most reanalysis datasets underestimate the variance,while the European Centre for Medium-Range Weather Forecasts Atmospheric Composition Reanalysis 4 has a larger variance than the observations.In addition to the original data comparison,the diurnal variability of sea level pressure and surface wind are also assessed,and the result indicates that the diurnal variations have a significant gap between observation and reanalysis data.This study indicates that the current high-frequency reanalysis data still have disadvantages when describing the atmospheric parameters in the Western Indian Ocean region. | LUO Yulan LIU Lin PAUL Oloo PHILIP Sagero LI Kuiping YANG Yang SU Qinglei LI Qiuchi MIAO Zichen | 2023 | Journal of Ocean University of China2023，22，4： | 0 |
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