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| 1 | Enhancing the leaching effect of an ion-absorbed rare earth ore by ameliorating the seepage effect with sodium dodecyl sulfate surfactant显示文摘Ameliorating the problem of low leaching efficiency,long leaching period,and high agent consumption should be studied to efficiently exploit ion-absorbed rare earth ore resources.In this study,the surfactant sodium dodecyl sulfate(SDS) is used to enhance the leaching effect of an ion-absorbed rare earth ore by ameliorating the seepage effect for the first time.The effects of surfactant concentration,leaching agent dosage,solution flow velocity,and solution pH on the leaching rate were explored,and the mechanism of SDS was discussed.Under the optimum conditions,the addition of a small amount of SDS(mass fraction0.04%) can increase the leaching rate by about 5%,shorten the leaching period,and reduce the consumption of the leaching agent.SDS significantly ameliorates the seepage effect of the ore body by reducing the surface tension of the leaching agent and ameliorating the wettability of the mineral surface.This effect is the main factor that improves the leaching efficiency.DFT(density functional theory) calculation results show that SDS can react with rare earth ions,which reduces the adsorption strength on clay mineral surfaces.Hence,rare earth ions are easily exchanged by ammonium ions,and mass transfer is enhanced. | Yongbing Zhang Boyuan Zhang Siqi Yang Zhigang Zhong Hepeng Zhou Xianping Luo | 2021 | International Journal of Mining Science and Technology2021，31，6： | 8 |
| 2 | CONSTITUTIVE EQUATION OF A NEW AVIATION LUBRICATING OIL显示文摘润滑油的新航空的拖拉在一个白手起家的测试钻塔上被测量。象 Erying 应力那样的油的神学的参数的精明的公式,限制砍强调有弹性的模量在高度的条件下面被获得并且砍砍在 elastohydrodynamic 润滑油(EHL ) 的种类率。这油的组成的方程被测试决定并且验证。当粘弹性的液体和理论价值与测量数据相当同意很好,实验的结果证明润滑油的新航空的行为表现,它暗示这油的组成的方程正确、可行。 | DENG Sier TENG Hongfei WANG Yanshuang LI Yunfeng YANG Boyuan | 2007 | Chinese Journal of Mechanical Engineering2007，20，5： | 6 |
| 3 | Scenario-based modeling and solving research on robust weapon project planning problems显示文摘Weapon project planning(WPP) plays a critical role in the process of national defense development and establishment of the future national defense force. WPP faces the backgrounds of various uncertainties, intense inter-influence of weapon systems and involves modelling, assessment, and optimization procedures.The contents of this paper are mainly divided into three parts: first,the WPP processes are analyzed, and related elements are formulated to transform the qualitative problem to mathematics form;second, the value evaluation model of WPP solutions is proposed based on two criteria of total capability gap and total capability dispersion; third, two robustness optimization models are constructed based on the absolute robustness criterion and the robustness deviation criterion to support the robustness optimization process under multi-scenario. Finally, a case is studied to examine the feasibility and effectiveness of the proposed models and approaches. | XIA Boyuan ZHAO Qingsong YANG Kewei DOU Yajie YANG Zhiwei | 2019 | Journal of Systems Engineering and Electronics2019，30，1： | 3 |
| 4 | Hydrocarbon Generation and Expulsion of the Upper Triassic T3x5Source Rocks in the Western Sichuan Depression: Assessment for Unconventional Natural Gas显示文摘Tight-sand gas in the Jurassic and shale gas within the fifth member of Xujiahe Formation(T3x5) in the Western Sichuan Basin(WSD) are currently regarded as the most prolific emerging unconventional gas plays in China. This study conducted a conventional evaluation of T3x5 source rocks in the WSD, and investigated their hydrocarbon generation and expulsion characteristics, including intensity, efficiency and amount. The results show that, the T3x5 source rocks are thick(generally >200 m), and have a high total organic content(TOC), ranging from 2.5 to 4.5 wt%. It is thus indivative of a great hydrocarbon generation potential when they underwent high thermal evolution(Ro>1.2%) in the area. In addition, an improved method of hydrocarbon generation potential is applied, indicating that the source rocks reached a hydrocarbon expulsion threshold with vitrinite reflectance(Ro) reaching 1.06%, and that the comprehensive hydrocarbon expulsion efficiency is about 60%. The amount of hydrocarbon generation and expulsion from T3x5 source rocks is 3.14×1010 t and 1.86×1010 t, respectively, with a residual amount of 1.28×1010 t within them. Continuous-type tight-sand gas is predicted to have developed in the Jurassic in the Chengdu Sag of the WSD because of the good source-reservoir configuration; the Jurassic sandstone reservoirs are tight, and the gas expelled from the T3x5 source rocks migrates for very short distances vertically and horizontally. The amount of gas accumulation in the Jurassic reservoirs derived from T3x5 source rocks is up to 9.3×108 t. Geological resources of shale gas are up to 1.05×1010 t. Small differences between the amounts calculated by the volumetric method and those obtained by hydrocarbon generation potential method may be due to other gas accumulations present within interbedded sands associated with gas shales. | GUO Yingchun SONG Yan PANG Xiongqi WANG Youwei YANG Keming LI Boyuan | 2015 | Acta Geologica Sinica(English Edition)2015，89，1： | 2 |
| 5 | Investigation into the traction coefficient in elasto-hydrodynamic lubrication显示文摘 | Wang Yanshuang Yang Boyuan Wang Liqin | 2004 | Tribotest2004，11，2： | 1 |
| 6 | Study on the numerical extrapolated method for calculating the 3-D crack front stress intensity factor显示文摘 | Wu Xutao Yang Boyuan | 1999 | Journal of Hefei University of Tchnology1999，22，4： | 1 |
| 7 | Insights into the floatability between spodumene and albite from crystal chemistry standpoint显示文摘Spodumene is a silicate mineral rich in lithium.However,the gangue mineral,albite has similar crystal chemical structure and composition to spodumene.In this work,the density functional theory(DFT)calculation was taken to research the floatability from the perspective of crystal chemistry.And contact angle test and reagent adsorption test were used to support the simulation results.In addition,the weighted total density of broken bonds is proposed for the first time to judge the generation probability of cleavage surface.The DFT calculation results display that the Na and Al sites on the albite surface are the adsorption sites of water molecules.While the water molecules only bond with Al atom on the surface of spodumene and each Al site can adsorb only one water molecule.Thus,the wetting effect of water molecules on the albite surface is stronger than that of spodumene.This is consistent with the result of contact angle.In sodium oleate system,the oleic acid anion is adsorbed on the spodumene surface in form of a multicomponent ring while the albite is a single ring.Theoretically,oleic acid anion can be strongly adsorbed on the surface of spodumene and albite under vacuum.The adsorption strength of spodumene is higher than that of albite.However,on hydrated surface,the adsorption strength of oleic acid anion on mineral surface is greatly reduced due to the interaction between water molecules and metal site on mineral surface.Thus,spodumene and albite are hard to float without external activated ions in sodium oleate system. | Hepeng Zhou Fanxin Xie Yongbing Zhang Boyuan Zhang Siqi Yang Xianping Luo | 2022 | International Journal of Mining Science and Technology2022，32，6： | 1 |
| 8 | Multi-objective optimization of operation loop recommendation for kill web显示文摘In order to improve our military ’s level of intelligent accusation decision-making in future intelligent joint warfare, this paper studies operation loop recommendation methods for kill web based on the fundamental combat form of the future, i.e.,“web-based kill,” and the operation loop theory. Firstly, we pioneer the operation loop recommendation problem with operation ring quality as the objective and closed-loop time as the constraint, and construct the corresponding planning model.Secondly, considering the case where there are multiple decision objectives for the combat ring recommendation problem,we propose for the first time a multi-objective optimization algorithm, the multi-objective ant colony evolutionary algorithm based on decomposition(MOACEA/D), which integrates the multi-objective evolutionary algorithm based on decomposition(MOEA/D) with the ant colony algorithm. The MOACEA/D can converge the optimal solutions of multiple single objectives nondominated solution set for the multi-objective problem. Finally,compared with other classical multi-objective optimization algorithms, the MOACEA/D is superior to other algorithms superior in terms of the hyper volume(HV), which verifies the effectiveness of the method and greatly improves the quality and efficiency of commanders’ decision-making. | YANG Kewei XIA Boyuan CHEN Gang YANG Zhiwei LI Minghao | 2022 | Journal of Systems Engineering and Electronics2022，33，4： | 1 |
| 9 | Development of an experi-mental rig with hydrostatic bearing for testing the EHDtraction force of high-speed lubricants 显示文摘 | YANG Boyuan ZHENG Peiyun | 1998 | TribotestJournal1998，24，9： | 1 |
| 10 | Simulation and 3Dsolid Modeling of Skew Bevel Gear显示文摘 | ZHANG Luoping FU Jing YANG Boyuan | 2012 | Applied Mechanics and Materials2012，12，11221231： | 1 |
| 11 | Development of an experimental rig with hydrostatic bearings for testing the EHD traction force of high-speed lubricants 显示文摘 | Yang Boyuan Zheng Peibin | 1998 | Tribotest Journal1998，，9： | 1 |
| 12 | System portfolio selection based on GRA method under hesitant fuzzy environment显示文摘The hesitant fuzzy set(HFS) is an important tool to deal with uncertain and vague information.In equipment system portfolio selection, the index attribute of the equipment system may not be expressed by precise data;it is usually described by qualitative information and expressed as multiple possible values.We propose a method of equipment system portfolio selection under hesitant fuzzy environment.The hesitant fuzzy element(HFE) is used to describe the index and attribute values of the equipment system.The hesitation degree of HFEs measures the uncertainty of the criterion data of the equipment system.The hesitant fuzzy grey relational analysis(GRA) method is used to evaluate the score of the equipment system, and the improved HFE distance measure is used to fully consider the influence of hesitation degree on the grey correlation degree.Based on the score and hesitation degree of the equipment system,two portfolio selection models of the equipment system and an equipment system portfolio selection case is given to illustrate the application process and effectiveness of the method. | LI Zhuoqian DOU Yajie XIA Boyuan YANG Kewei LI Mengjun | 2022 | Journal of Systems Engineering and Electronics2022，33，1： | 1 |
| 13 | An AuNPs/Mesoporous NiO/Nickel Foam Nanocomposite as a Miniaturized Electrode for Heavy Metal Detection in Groundwater显示文摘Heavy metals,notably Pb2+and Cu^(2+),are some of the most persistent contaminants found in groundwater.Frequent monitoring of these metals,which relies on efficient,sensitive,cost-effective,and reliable methods,is a necessity.We present a nanocomposite-based miniaturized electrode for the concurrent measurement of Pb2+and Cu^(2+)by exploiting the electroanalytical technique of square wave voltammetry.We also propose a facile in situ hydrothermal calcination method to directly grow binder-free mesoporous Ni O on a three-dimensional nickel foam,which is then electrochemically seeded with gold nanoparticles(Au NPs).The meticulous design of a low-barrier Ohmic contact between mesoporous Ni O and Au NPs facilitates target-mediated nanochannel-confined electron transfer within mesoporous Ni O.As a result,the heavy metals Pb2+(0.020 mg.L^(-1)detection limit;2.0–16.0 mg.L^(-1)detection range)and Cu^(2+)(0.013 mg.L^(-1)detection limit;0.4–12.8 mg.L^(-1)detection range)can be detected simultaneously with high precision.Furthermore,other heavy metal ions and common interfering ions found in groundwater showed negligible impacts on the electrode’s performance,and the recovery rate of groundwater samples varied between 96.3%±2.1%and 109.4%±0.6%.The compactness,flexible shape,low power consumption,and ability to remotely operate our electrode pave the way for onsite detection of heavy metals in groundwater,thereby demonstrating the potential to revolutionize the field of environmental monitoring. | Boyuan Xue Qian Yang Kaidong Xia Zhihong Li George Y.Chen Dayi Zhang Xiaohong Zhou | 2023 | Engineering2023，，8： | 0 |
| 14 | Metal-organic frameworks with mixed-ligands strategy as heterogeneous nucleation center to assist crystallization for efficient and stable perovskite solar cells显示文摘Deep-level defects and random oriented configuration in perovskite crystallization process would cause the nonradiative recombination and further affect the performance of perovskite solar cells(PSCs).Herein,two metal-organic frameworks(MOFs)with tunable Lewis-base passivation sites have been constructed(Cd-Httb and Cd-Httb-BDC,Httb=5-(4-(1H-1,2,4-triazole-1-yl)benzyl)-1h-tetrazole,BDC=1,4-dicarboxybenzene)to eliminate deep-level defects and simultaneously as nanostructured heterogeneous nucleation seed to assist the growth of large-grained perovskite films.Compared with the control and Cd-Httb,Cd-Httb-BDC designed with mix-ligands strategy exhibited the enhanced inducted effect on the crystallization and nucleation of high-quality perovskite films during annealing process.Consequently,the resultant Cd-Httb-BDC-modified device achieved higher power conversion efficiency(PCE)(22.18%)than the control(20.89%)and Cd-Httb(21.56%).Meanwhile,the unencapsulated Cd-Httb-BDC-modified device still maintained 90%of initial PCE after 1500 h in ambient conditions and exhibited enhanced thermal stability(85℃ in N_(2) atmosphere).This work presented a successful example of mixligands strategy on construction of high-quality MOF-assisted perovskite films for high-efficient and stable PSCs. | Yayu Dong Shuang Gai Jian Zhang Ruiqing Fan Boyuan Hu Wei Wang Wei Cao Jiaqi Wang Ke Zhu Debin Xia Lin Geng Yulin Yang | 2023 | Journal of Energy Chemistry2023，，2： | 0 |
| 15 | Metabolic flux simulation of microbial systems based on optimal planning algorithms显示文摘The genomic scale metabolic networks of the microorganisms can be constructed based on their genome se-quences,functional annotations,and biochemical reactions,reflecting almost all of the metabolic functions.Mathematical simulations of metabolic fluxes could make these functions be visualized,thereby providing guidance for rational engineering design and experimental operations.This review summarized recently devel-oped flux simulation algorithms of microbial systems.For the single microbial systems,the optimal planning algorithm has low complexity because there is no interaction between microorganisms,and it can quickly simulate the stable metabolic states through the pseudo-steady hypothesis.Besides,the experimental conditions of single microbial systems are easier to reach or close to the optimal states of simulation,compared with pol-ymicrobial systems.The polymicrobial culture systems could outcompete the single microbial systems as they could relieve metabolic pressure through metabolic division,resource exchange,and complex substrate co-utilization.Besides,they provide varieties of intracellular production environments,which render them the po-tential to achieve efficient bioproduct synthesis.However,due to the quasi-steady hypothesis that restricts the simulation of the dynamic processes of microbial interactions and the algorithm complexity,there are few re-searches on simulation algorithms of polymicrobial metabolic fluxes.Therefore,this review also analyzed and combed the microbial interactions based on the commonly used hypothesis of maximizing growth rates,and studied the strategies of coupling interactions with optimal planning simulations for metabolism.Finally,this review provided new insights into the genomic scale metabolic flux simulations of polymicrobial systems. | Chen Yang Boyuan Xue Yiming Zhang Shaojie Wang Haijia Su | 2023 | Green Chemical Engineering2023，4，2： | 0 |
| 16 | Criteria and regulatory considerations for the conditional approval of innovative antitumor drugs in China:from the perspective of clinical reviewers显示文摘1 BACKGROUND Before the State Council of the People’s Republic of China issued the“Opinions on the Reform of the Examination and Approval System of Pharmaceutical and Medical Devices”[1],several problems existed in China’s drug evaluation and approval system.The long approval time and low efficiency of new drug marketing seriously affected the enthusiasm for drug innovation.To this end,the current“Drug Registration Regulation”(DRR)[2]was initiated by the National Medical Products Administration of China and officially implemented on July 1,2020.To encourage clinical value-oriented drug innovation,four expedited drug programs were first proposed,including breakthrough therapy drugs,conditional approval,priority review,and special approval procedures.For drugs listed in the expedited programs,the drug regulatory authorities and professional technical institutions should provide policy and technical support,prioritize the allocation of communication and review resources,and thereafter shorten the review time as much as possible. | Limin Zou Yueli Qi Yongling Jiang Ling Tang Yu Du Boyuan Zhao Yanzhe Sun Meiyi Xiang Jun Ma Zhimin Yang | 2023 | Cancer Communications2023，43，2： | 0 |
| 17 | A deep reinforcement learning method for multi-stage equipment development planning in uncertain environments显示文摘Equipment development planning(EDP)is usually a long-term process often performed in an environment with high uncertainty.The traditional multi-stage dynamic programming cannot cope with this kind of uncertainty with unpredictable situations.To deal with this problem,a multi-stage EDP model based on a deep reinforcement learning(DRL)algorithm is proposed to respond quickly to any environmental changes within a reasonable range.Firstly,the basic problem of multi-stage EDP is described,and a mathematical planning model is constructed.Then,for two kinds of uncertainties(future capabi lity requirements and the amount of investment in each stage),a corresponding DRL framework is designed to define the environment,state,action,and reward function for multi-stage EDP.After that,the dueling deep Q-network(Dueling DQN)algorithm is used to solve the multi-stage EDP to generate an approximately optimal multi-stage equipment development scheme.Finally,a case of ten kinds of equipment in 100 possible environments,which are randomly generated,is used to test the feasibility and effectiveness of the proposed models.The results show that the algorithm can respond instantaneously in any state of the multistage EDP environment and unlike traditional algorithms,the algorithm does not need to re-optimize the problem for any change in the environment.In addition,the algorithm can flexibly adjust at subsequent planning stages in the event of a change to the equipment capability requirements to adapt to the new requirements. | LIU Peng XIA Boyuan YANG Zhiwei LI Jichao TAN Yuejin | 2022 | Journal of Systems Engineering and Electronics2022，33，6： | 0 |
| 18 | Heat diffusion optimization in high performance perovskite solar cells integrated with zeolite显示文摘Heat accumulation inside perovskite solar cells causes the decomposition of the perovskite layer and hole transport materials(HTMs)under working conditions,yielding a decrease in long-term stability.Here,we present a zeolite-assisted heat conduction strategy by introducing economic zeolite crystals(e.g.,NaX,NaY,and ZSM-5)as a cooling filter to induce heat diffusion.The fitted thermal diffusion kinetic equation from real-time infrared thermal imaging technology reveals the zeolite skeleton assisted thermal co nduction mechanism of internal lattice vibration.Additionally,the nearly twofold improved conductivity of the modified HTM film is benefited from Na^(+)hopping on the supercages of the zeolite,therefore,the best-performed device with a rapid heat diffusion and defect inhibition obtains a remarkable power conversion efficiency of 23.42%.Both of NaX modified sprio-OMeTAD and PTAA based devices exhibit excellent operational stability after heating 1000 h at 85℃under N_(2)condition.This work demonstrates the potential application of economical porous zeolite materials in improving the thermal stability of PSCs. | Wei Wang Jian Zhang Kaifeng Lin Jiaqi Wang Boyuan Hu Yayu Dong Debin Xia Yulin Yang | 2023 | Journal of Energy Chemistry2023，，11： | 0 |
| 19 | A Descriptor System Approach of Sensor Fault State Estimation for Sampled-data Systems显示文摘This paper proposes a fault estimation method for sampled data systems with sensor faults. The sampled data system is firstly discretized to obtain a discrete time model. Then a descriptor system is constructed to describe the discretized system with sensor faults. Based on the descriptor system representation a bank of observers are designed to isolate and estimate the sensor faults. These observers can be synthesized by the linear matrix inequality (LMI) technique and sufficient conditions for the existence of these observers are derived. Finally the effectiveness is ascertained by an aircraft simulation example which is in the proposed method. | Zhenhua Zhou Mao Wang Boyuan Yang | 2019 | Journal of Harbin Institute of Technology(New Series)2019，26，5： | 0 |
| 20 | Direct environmental TEM observation of silicon diffusion-induced strong metal-silica interaction for boosting CO_(2)hydrogenation显示文摘For the high-temperature catalytic reaction,revealing the interface of catalyst–support and its evolution under reactive conditions is of crucial importance for understanding the reaction mechanism.However,much less is known about the atomic-scale interface of the hard-to-reduce silica-metal compared to that of reducible oxide systems.Here we reported the general behaviors of SiO_(2)migration onto various metal(Pt,Co,Rh,Pd,Ru,and Ni)nanocrystals supported on silica.Typically,the Pt/SiO_(2)catalytic system,which boosted the CO_(2)hydrogenation to CO,exhibited the reduction of Si0 at the Pt-SiO2 interface under H2 and further Si diffusion into the near surface of Pt nanoparticles,which was unveiled by in-situ environmental transmission electron microscopy coupled with spectroscopies.This reconstructed interface with Si diffused into Pt increased the sinter resistance of catalyst and thus improved the catalytic stability.The morphology of metal nanoparticles with SiO_(2)overlayer were dynamically evolved under reducing,vacuum,and oxidizing atmospheres,with a thicker SiO_(2)layer under oxidizing condition.The theoretical calculations revealed the mechanism that the Si-Pt surface provided synergistic sites for the activation of CO_(2)/H_(2)to produce CO with lower energy barriers,consequently boosting the high-temperature reverse water-gas shift reaction.These findings deepen the understanding toward the interface structure of inert oxide supported catalysts. | Lei Wang Lei Zhang Luyao Zhang Yulong Yun Kun Wang Boyuan Yu Xin Zhao Feng Yang | 2023 | Nano Research2023，16，2： | 0 |
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