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| 1 | Benefit allocation model of distributed photovoltaic power generation vehicle shed and energy storage charging pile based on integrated weighting-Shapley method显示文摘In this study,to develop a benefit-allocation model,in-depth analysis of a distributed photovoltaic-powergeneration carport and energy-storage charging-pile project was performed;the model was developed using Shapley integrated-empowerment benefit-distribution method.First,through literature survey and expert interview to identify the risk factors at various stages of the project,a dynamic risk-factor indicator system is developed.Second,to obtain a more meaningful risk-calculation result,the subjective and objective weights are combined,the weights of the risk factors at each stage are determined by the expert scoring method and entropy weight method,and the interest distribution model based on multi-dimensional risk factors is established.Finally,an example is used to verify the rationality of the method for the benefit distribution of the charging-pile project.The results of the example indicate that the limitations of the Shapley method can be reasonably avoided,and the applicability of the model for the benefit distribution of the charging-pile project is verified. | Qingkun Tan Peng Wu Wei Tang Chang Cao Chengjie Wang Yu Zhang | 2020 | Global Energy Interconnection2020，3，4： | 8 |
| 2 | Timing of Metamorphism and Provenance of the Metamorphic Basement of the Xiangshan Uranium Orefield, Jiangxi Province, China显示文摘The origin, age and evolution of the Precambrian metamorphic basement of southern China provide useful insights into early crustal development. Here, we present new laser ablation–inductively coupled plasma–mass spectrometry(LA–ICP–MS) U–Pb age data for detrital zircons from five samples of the Precambrian metamorphic basement of the Xiangshan uranium orefield. Two of these samples, from the northern Xiangshan volcanic basin, yielded a total of 140 U–Pb ages that cluster within the Neoproterozoic(773–963 Ma; 79.3% of data points), with the rest being scattered through the Paleoproterozoic and Mesoproterozoic, along with a single Archean age. These ages indicate that this basement material is associated with the Cathaysia Block. In comparison, the 172 concordant ages from the other three samples from the southern part of the Xiangshan volcanic basin cluster within the Neoproterozoic(767–944 Ma; 59.8%) as well as the Proterozoic(37.8%) and the Archean(2502–2712 Ma; 14.5%). These samples are also free of zircons with Grenvillian ages, indicating that these units are associated with the southeastern Yangtze Block. Combining these data with the geochemistry of these units, which suggests that the metamorphosed sedimentary rocks within the northern and southern parts of the Xiangshan basin have a common component from a magmatic island arc that formed during the early Neoproterozoic, we infer that the basin was located along the boundary between the Cathaysian and Yangtze blocks. In addition, the zircons within the samples from the southern and northern parts of the Xiangshan basin show different pre-Neoproterozoic(963 Ma) age populations but similar postNeoproterozoic zircon populations, indicating that the amalgamation of the Cathaysian and Yangtze blocks occurred after the Neoproterozoic(960 Ma), with magmatism peaking at 830 Ma and rifting starting at ~770 Ma, leading to the subsequent deposition(from bottom to top) of the Shenshan, Kuli, and Shangshi formations. | GUO Fusheng SHI Guo YANG Qingkun ZHANG Wanliang XIE Caifu ZHOU Wanpeng ZHANG Jiewei | 2018 | Acta Geologica Sinica(English Edition)2018，92，1： | 6 |
| 3 | Application in prestiction friction compensation for angular velocity loop of inertially stabilized platforms显示文摘To overcome the influence of the nonlinear friction on the gimbaled servo-system of an inertial stabilized platforms(ISPs) with DC motor direct-drive, the methods of modeling and compensation of the nonlinear friction are proposed. Firstly, the inapplicability of LuGre model when trying to interpret the backward angular displacement in the prestiction regime is observed experimentally and the reason is deduced theoretically. Then, based on the dynamic model of direct-drive ISPs, a modified LuGre model is proposed to describe the characteristic of the friction in the prestiction regime. Furthermore, the state switch condition of the three friction regimes including presliding, gross sliding and prestiction is presented. Finally, a composite compensation controller including a nonlinear friction observer and a feedforward compensator based on the novel LuGre model is designed to restrain the nonlinear friction and to improve the control precision. Experimental results indicate that compared with those of the conventional proportion–integration–differentiation(PID) control method and the PID plus LuGre model-based friction compensation method, the dwell-time has decreased from 0.2 s to almost 0 s, the position error decreased to 86.7%and the peak-to-peak value of position error decreased to 80% after the novel compensation controller is added. It concludes that the composite compensation controller can greatly improve the control precision of the dynamic sealed ISPs. | Zhang Zhiyong Li Zhiqiang Zhou Qingkun Zhang Lianchao Fan Dapeng | 2014 | Chinese Journal of Aeronautics2014，27，3： | 5 |
| 4 | Effect of thermo-mechanical treatment on mechanical and elastic properties of Ti–36Nb–5Zr alloy显示文摘The evolutions of phase constitutions and mechanical properties of a β-phase Ti–36Nb–5Zr(wt%) alloy during thermo-mechanical treatment were investigated. The alloy consisted of dual(β t α″) phase and exhibited a double yielding phenomenon in solution treated state. After cold rolling and subsequent annealing at 698 K for 20 min, an excellent combination of high strength(833 MPa) and low modulus(46 GPa) was obtained. The high strength can be attributed to high density of dislocations, nanosized α phase and grain refinement. On the other hand, the low Young's modulus originates from the suppression of chemical stabilization of β phase during annealing, which guarantees the low β-phase stability. Furthermore, the single-crystal elastic constants of the annealed Ti–36Nb–5Zr alloy were extracted from polycrystalline alloy using an in-situ synchrotron X-ray technique. The results indicated that the low shear modulus C44 contributes to the low Young's modulus for the Ti–36Nb–5Zr alloy, suggesting that reducing C44 through thermo-mechanical treatment might be an efficient approach to realize low Young's modulus in β-phase Ti alloys. The results achieved in this study could be helpful to elucidate the origin of low modulus and sheds light on developing novel biomedical Ti alloys with both low modulus and high strength. | Qingkun Meng Qing Liu Shun Guo Yongqi Zhu Xinqing Zhao | 2015 | Progress in Natural Science:Materials International2015，25，3： | 5 |
| 5 | α′TypeTi-Nb-Zralloyswithultra-lowYoung′smodulusandhighstrength显示文摘a' phase based Ti-Nb-Zr alloys with low Young's modulus and high strength were prepared,and their microstructure and mechanical properties were characterized.It was revealed that the lattice expansion by Nb and Zr addition as well as the presence of a few of a' martensite might be responsible for the low modulus achieved.Ti-15Nb-9Zr alloy,with ultralow modulus of 39 GPa and high strength of850 MPa,could be a potential candidate for biomedical applications. | Qing Liu Qingkun Meng Shun Guo Xinqing Zhao | 2013 | Progress in Natural Science:Materials International2013，23，6： | 4 |
| 6 | An enrichment model using regular health examination data for early detection of colorectal cancer显示文摘Objective: Challenges remain in current practices of colorectal cancer(CRC) screening, such as low compliance,low specificities and expensive cost. This study aimed to identify high-risk groups for CRC from the general population using regular health examination data.Methods: The study population consist of more than 7,000 CRC cases and more than 140,000 controls. Using regular health examination data, a model detecting CRC cases was derived by the classification and regression trees(CART) algorithm. Receiver operating characteristic(ROC) curve was applied to evaluate the performance of models. The robustness and generalization of the CART model were validated by independent datasets. In addition, the effectiveness of CART-based screening was compared with stool-based screening.Results: After data quality control, 4,647 CRC cases and 133,898 controls free of colorectal neoplasms were used for downstream analysis. The final CART model based on four biomarkers(age, albumin, hematocrit and percent lymphocytes) was constructed. In the test set, the area under ROC curve(AUC) of the CART model was 0.88 [95%confidence interval(95% CI), 0.87-0.90] for detecting CRC. At the cutoff yielding 99.0% specificity, this model’s sensitivity was 62.2%(95% CI, 58.1%-66.2%), thereby achieving a 63-fold enrichment of CRC cases. We validated the robustness of the method across subsets of test set with diverse CRC incidences, aging rates, genders ratio, distributions of tumor stages and locations, and data sources. Importantly, CART-based screening had the higher positive predictive value(1.6%) than fecal immunochemical test(0.3%).Conclusions: As an alternative approach for the early detection of CRC, this study provides a low-cost method using regular health examination data to identify high-risk individuals for CRC for further examinations. The approach can promote early detection of CRC especially in developing countries such as China, where annual health examination is popular but regular CRC-specific screening is rare. | Qiang Shi Zhaoya Gao Pengze Wu Fanxiu Heng Fuming Lei Yanzhao Wang Qingkun Gao Qingmin Zeng Pengfei Niu Cheng Li Jin Gu | 2019 | Chinese Journal of Cancer Research2019，31，4： | 3 |
| 7 | Wear Behavior of In-situ TiC Particles Reinforced Aluminum Matrix Composite显示文摘The microstructure, tensile property and wear resistance of 7075 aluminum matrix composite reinforced with TiC particles prepared by in-situ reaction casting were investigated. The effect of TiC reinforcement on wear behavior was analyzed. The wear mechanism was also discussed. A micro-mechanism model of reaction kinetics for synthesis of TiC was acquired. Results show that TiC could increase the tensile and yield strength, but decrease the elongation. Besides, TiC particles improve the property of wear resistance of 7075 aluminum alloy. The wear mechanisms include abrasive wear and adhesive wear in wear test process. | 隋艳伟 CHEN Xiao WANG Rui QI Jiqiu WEI Fuxiang HE Yezeng MENG Qingkun 孙智 | 2017 | Journal of Wuhan University of Technology(Materials Science)2017，32，3： | 3 |
| 8 | Microstructural evolution and mechanical behavior of metastable β-type Ti-25Nb-2Mo-4Sn alloy with high strength and low modulus显示文摘This paper presents a systematic study of newly developed metastable β-type Ti-25Nb-2Mo-4Sn (wt%) alloy with high strength and low elastic modulus, with focus on the microstructural evolution and mechanical behavior associated with aging. The pre-treatment (solution treatment or cold rolling) prior to aging exerts substantial influence on the subsequent aging response including microstructural evolution and mechanical behavior. Even under the same aging treatment, the aging products could be (β+ω), or alternatively (β+α), depending on the pre-treatments. This interesting aging response was discussed on the basis of the mechanism for ω formation. High-density dislocation tangles and grain boundaries induced by severe cold rolling play a key role in hindering the transition from β to isothermal ω, favoring the precipitation of α phase on aging. By aging cold-rolled specimen for short time, superior mechanical properties, i.e. high ultimate strength of ~1113 MPa and low elastic modulus of ~65 GPa, achieved in Ti-25Nb-2Mo-4Sn alloy. The characterization of microstructural evolution and compositional change indicated that the precipitation of fine α does not cause the enrichment of β-stabilizers in β matrix upon a short-time aging, guaranteeing low elastic modulus of the short-time aged specimen. Meanwhile, fine α precipitates as well as dislocations play a crucial part in strengthening, giving rise to its high yield strength and high ultimate tensile strength. | Shun Guo Qingkun Meng Guangyue Liao Liang Hu Xinqing Zhao | 2013 | Progress in Natural Science:Materials International2013，23，2： | 2 |
| 9 | Where are the Volcanic Calderas in the Xiangshan Volcanic Basin of Jiangxi? Implications from Anisotropy of Magnetic Susceptibility显示文摘Objective As the world's third largest volcanic type uranium ore field,the Xiangshan volcanic basin has attracted much attention for its large industrial value.The ore hosting rocks are mainly the early Cretaceous rhyodacite and porphyroclastic lava,as well as small amounts of high level intrusive acidic rocks and metamorphic rocks.The vertical alteration of polymetallic | GUO Fusheng LI Guangrong LIU Linqing WU Zhichun YANG Qingkun XIE Caifu | 2017 | Acta Geologica Sinica(English Edition)2017，91，1： | 2 |
| 10 | COVID-19 vaccine development:milestones,lessons and prospects显示文摘With the constantly mutating of SARS-CoV-2 and the emergence of Variants of Concern(VOC),the implementation of vaccination is critically important.Existing SARS-CoV-2 vaccines mainly include inactivated,live attenuated,viral vector,protein subunit,RNA,DNA,and virus-like particle(VLP)vaccines.Viral vector vaccines,protein subunit vaccines,and mRNA vaccines may induce additional cellular or humoral immune regulations,including Th cell responses and germinal center responses,and form relevant memory cells,greatly improving their efficiency.However,some viral vector or mRNA vaccines may be associated with complications like thrombocytopenia and myocarditis,raising concerns about the safety of these COVID-19 vaccines.Here,we systemically assess the safety and efficacy of COVID-19 vaccines,including the possible complications and different effects on pregnant women,the elderly,people with immune diseases and acquired immunodeficiency syndrome(AIDS),transplant recipients,and cancer patients.Based on the current analysis,governments and relevant agencies are recommended to continue to advance the vaccine immunization process.Simultaneously,special attention should be paid to the health status of the vaccines,timely treatment of complications,vaccine development,and ensuring the lives and health of patients.In addition,available measures such as mix-and-match vaccination,developing new vaccines like nanoparticle vaccines,and optimizing immune adjuvant to improve vaccine safety and efficacy could be considered. | Maochen Li Han Wang Lili Tian Zehan Pang Qingkun Yang Tianqi Huang Junfen Fan Lihua Song Yigang Tong Huahao Fan | 2022 | Signal Transduction and Targeted Therapy2022，7，6： | 2 |
| 11 | Microstructural evolution and mechanical behavior of metastable β-type Ti–30Nb–1Mo–4Sn alloy with low modulus and high strength显示文摘A metastable P-type Ti-30Nb-lMo-4Sn alloy with ultralow elastic modulus and high strength was fabricated.Under the solution treatment state,the Ti-30Nb-1Mo-4Sn alloy possesses low yield strength of about 130 MPa owing to the presence of the coarse α ' martensitic laths.Upon a cold rolling and annealing process,the martensitic transformation from β to α' is significantly retarded due to the inhibitory effect of grain boundaries and dislocations.As a result,the metastable β phase with low total amount of β-stabilizers is retained to room temperature,giving rise to a low modulus of 45 GPa.Meanwhile,nano-sized a precipitates and dislocation tangles play a key role in strengthening the Ti-30Nb-1Mo-4Sn alloy,resulting in a high tensile strength of ~ 1000 MPa.With low elastic modulus and high strength,the metastable P-type Ti-30Nb-1Mo-4Sn alloy could be a potential candidate for biomedical materials. | Shun Guo Qingkun Meng Xiaonong Cheng Xinqing Zhao | 2015 | Progress in Natural Science:Materials International2015，25，5： | 2 |
| 12 | Evaluation of D-dimer in the diagnosis of suspected aortic dissection显示文摘 | Fan Qingkun Wang Wenwu Zhang Zhenlu | | 0，，： | 1 |
| 13 | Peculiar aging response of near β Ti-25 Nb-2Mo-4Sn alloy for biomedical applications显示文摘In this paper,aging response of a recently developed near β Ti-25Nb-2Mo-4Sn(wt%) alloy with high strength and low modulus was investigated intensively.The experimental results from X-ray diffraction and transmission electron microscopy showed that the aging production of the Ti-2524 alloy was(β+ω) or(β+α) even under the same aging treatment condition,depending on the pre-treatments prior to the aging.Solid evidence confirmed the competition between stable α phase and metastable ω phase during the decomposition of β phase on aging.Different aging response of Ti-2524 alloy can be attributed to high-density dislocations and grain boundaries which suppress the formation of ω,and alternatively promote a phase formation.This provides a thermo-mechanical approach to inhibit deleterious ω phase formation and assist fine α phase precipitation.Upon an appropriate aging treatment,superior mechanical properties of high ultimate tensile strength(1233 MPa) and low elastic modulus(77 GPa) were achieved in Ti-2524 alloy. | Shun Guo Bin Chen Qingkun Meng Ruiwen Zhao Xinqing Zhao | 2013 | Progress in Natural Science:Materials International2013，23，1： | 1 |
| 14 | Ultrasonic Nondestructive Testing Accurate Sizing and Locating Technique Based on Time-of-Flight-Diffraction Method显示文摘 | Tianlu Chen Peiwen Que Oi Zhang Qingkun Liu | 2005 | Russian Journal of Nondestructive Testing2005，，9： | 1 |
| 15 | Grain refinement of the AI-Cu-Mg-Ag alloy with Er and Se additions 显示文摘 | Li Yuntao Liu Zhiyi Xia Qingkun | 2007 | Metallurgical and Materials Transactions A2007，38，11： | 1 |
| 16 | A β-type TiNbZr alloy with low modulus and high strength for biomedical applications显示文摘The effect of thermo-mechanical treatment on the mechanical properties of a novel β-type Ti–36Nb–5Zr(wt%) alloy has been investigated.The solution treated alloy consists of β and α″ phases and exhibits a two-stage yielding with a low yield stress(around 100 MPa). After cold rolling at a reduction of 87.5% and subsequent annealing treatment at 698 K for 25 min, a fine microstructure with nanosized α precipitates distributed in small β grains as well as high density of dislocations was obtained to achieve a yield strength of 720 MPa and a ultimate tensile strength of 860 MPa. In spite of the formation of α precipitates, the β-stabilizers are not enriched in the parent β matrix due to the short duration and low temperature of the thermal treatment, resulting in a low chemical stability of β phase. The low stability of β phase and the small volume fraction of α precipitates produce a low Young's modulus of 48 GPa. Such an excellent combination of low elastic modulus and high strength in mechanical properties indicates great potential for biomedical applications. | Qingkun Meng Shun Guo Qing Liu Liang Hu Xinqing Zhao | 2014 | Progress in Natural Science:Materials International2014，24，2： | 1 |
| 17 | 3D origami electrochemical immunodevice for sensitive point-of-care testing based on dual-signal amplification strategy显示文摘 | Chao Ma Weiping Li Qingkun Kong Hongmei Yang Zhaoquan Bian Xianrang Song Jinghua Yu Mei Yan | 2015 | Biosensors and Bioelectronics2015，，： | 1 |
| 18 | Suppression of isothermal ω phase by dislocation tangles and grain boundaries in metastable β-type titanium alloys显示文摘 | Shun Guo Qingkun Meng Liang Hu Guangyue Liao Xinqing Zhao Huibin Xu | 2013 | Journal of Alloys and Compounds2013，，： | 1 |
| 19 | Grain Refinement of the Al-Cu-Mg-Ag Alloy with Er and Sc Additions显示文摘 | Yuntao Li Zhiyi Liu Qingkun Xia Yanbin Liu | 2007 | Metallurgical and Materials Transactions A2007，，11： | 1 |
| 20 | A Novel Metastable Ti-25Nb-2Mo-4Sn Alloy with High Strength and Low Young’s Modulus显示文摘 | Shun Guo Zhenzhen Bao Qingkun Meng Liang Hu Xinqing Zhao | 2012 | Metallurgical and Materials Transactions A2012，，10： | 1 |
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