摘要：Photocatalysis provides a promising solution to the worldwide shortages of energy and industrially important raw materials by utilizing sunlight for coupled hydrogen(H_(2))production with controllable organic ***,we demonstrate that PtFeNiCoCu high-entropy alloy(HEA)nanocrystals can act as efficient cocatalysts for H_(2)evolution coupled with selective oxidation of cinnamyl alcohol to cinnamaldehyde by cubic cadmium sulfide(CdS)quantum dots(QDs)with uniform sizes of 4.0±0.5 *** nanocrystals were prepared via a simple solvothermal approach,and were successfully integrated with CdS QDs by an electrostatic self-assembly method to construct HEA/CdS *** optimized HEA/CdS sample presented an enhanced photocatalytic H_(2)production rate of 7.15 mmol g^(-1)h^(-1),which was 13 times that of pure CdS ***,a cinnamyl alcohol conversion of 96.2%with cinnamaldehyde selectivity of 99.5%was achieved after photoreaction for 3 *** integration of HEA with CdS QDs extended the optical absorption edge from 475 to 484 *** d-band center analysis,Pt atoms in the HEA are the active sites for H_(2)evolution,exhibiting higher catalytic activity than pure ***,the band structure of the CdS QDs enables the oxidative transformation of cinnamyl alcohol to cinnamaldehyde with high ***,femtosecond transient absorption spectroscopy shows that HEA can significantly promote the separation of photogenerated carriers in CdS,which is vital for achieving enhanced photocatalytic *** work inspires atomic-level design of photocatalytic materials for coordinated production of green energy carriers and value-added products.

摘要：CO_(2)hydrogenation to value-added light olefins(C_(2-4)=)is crucial for the utilization and cycling of global carbon *** CO_(2)activation and carbon chain growth ability are key factors for iron-based catalysts for efficient CO_(2)conversion to target C_(2-4)=*** electronic interaction and confinement effect of electron-deficient graphene inner surface on the active phase are effective to improve surface chemical properties and enhance the catalytic ***,we report a core-shell FeCo alloy catalyst with graphene layers confinement prepared by a simple sol-gel *** electron transfer from Fe species to curved graphene inner surface modifies the surface electronic structure of the active phaseχ-(Fe_(x)Co_(1-x))_(5)C_(2)and improves CO_(2)adsorption capacity,enhancing the efficient conversion of CO_(2)and moderate C-C ***,the catalyst FeCoK@C exhibits C_(2-4)=selectivity of 33.0%while maintaining high CO_(2)conversion of 52.0%.The high stability without obvious deactivation for over 100 h and unprecedented C_(2-4)=space time yield(STY)up to 52.9 mmolCO_(2)·g^(-1)·h^(-1)demonstrate its potential for practical *** work provides an efficient strategy for the development of high-performance CO_(2)hydrogenation catalysts.

摘要：Complex network models are frequently employed for simulating and studyingdiverse real-world complex *** these models,scale-free networks typically exhibit greater fragility to malicious ***,enhancing the robustness of scale-free networks has become a pressing *** address this problem,this paper proposes a Multi-Granularity Integration Algorithm(MGIA),which aims to improve the robustness of scale-free networks while keeping the initial degree of each node unchanged,ensuring network connectivity and avoiding the generation of multiple *** algorithm generates a multi-granularity structure from the initial network to be optimized,then uses different optimization strategies to optimize the networks at various granular layers in this structure,and finally realizes the information exchange between different granular layers,thereby further enhancing the optimization *** propose new network refresh,crossover,and mutation operators to ensure that the optimized network satisfies the given ***,we propose new network similarity and network dissimilarity evaluation metrics to improve the effectiveness of the optimization operators in the *** the experiments,the MGIA enhances the robustness of the scale-free network by 67.6%.This improvement is approximately 17.2%higher than the optimization effects achieved by eight currently existing complex network robustness optimization algorithms.

摘要：Lithium metal batteries (LMBs) using gelpolymer electrolytes with satisfactory theoretical capacity andlow cost hold great promise for high energy density storagesystems. However, the inherently unwanted polarizations anduncontrolled lithium dendrites resulting from inferior Li-iontransporting efficiency hinder the practical application ofconventional gel electrolytes. Herein, a highly conductivecomposite gel polymer electrolyte with effective Li-ion conducting channels is designed via swelling nanofibrous membrane, where the single-ion conducting polymer of lithiumsulfonate-based polyether (DEBS-Li) used as the Li-ion accelerator is combined with poly(vinylidene fluoride-hexafluoropropylene)P(VDF-HFP) matrix by the electrospinningtechnology. The DEBS-Li having rich sulfonic groups canpromote lithium salts dissociation via electrostatic interaction,thus expediting the ionic migration and enabling the as-developed gel electrolyte with high ionic conductivity (~1.58×10^(−3) S cm^(−1)) and lithium transference number (0.62) at 25℃.Such optimization of ionic transfer kinetics can highly delaythe nucleation time of lithium dendrite and significantly inhibit dendritic formation, which leads to a stable Li plating/stripping in the symmetrical battery over 250 h at1.5 mA cm^(−2). Benefiting from these advantages, the Li||LiFePO_(4)cell using the electrolyte realizes ultralong stable cyclingover 500 cycles at a high rate of 10 C with ~90% capacityretention. We believe this novel lithium sulfonate-basedpolyether gel polymer electrolyte has profound potential forpractical applications in high-performance LMBs.

摘要：Detection of target analytes at low concentrations is significant in various fields,including pharmaceuticals,healthcare,and environmental ***(TP),a natural alkaloid used as a bronchodilator to treat respiratory disorders such as asthma,bronchitis,and emphysema,has a narrow therapeutic window with a safe plasma concentration ranging from 55.5-111.0μmol·L^(-1)in *** monitoring of TP levels is essential because too low or too high can cause se-rious side *** this regard,non-enzymatic electrochemical sensors offer a practical solution with rapidity,portability,and high *** article aims to provide a comprehensive review of the recent developments of non-enzymatic electrochemical sensors for TP detection,highlighting the basic principles,electro-oxidation mechanisms,catalytic effects,and the role of modifying materials on electrode ***-based electrodes such as glassy carbon electrodes(GCEs),carbon paste electrodes(CPEs),and carbon screen-printed electrodes(SPCEs)have become the primary choices for non-enzymatic sensors due to their chemical stability,low cost,and flexibility in *** article identifies the sig-nificant contribution of various modifying materials,including nanomaterials such as carbon nanotubes(CNTs),graphene,metal oxides,and multi-element *** modifications enhance sensors’electron transfer,sensitivity,and selectivity in detecting TP at low concentrations in complex media such as blood plasma and pharmaceutical *** electro-oxidation mechanism of TP is also discussed in depth,emphasizing the hydroxyl and carbonyl reaction pathways strongly influenced by pH and electrode *** mechanisms guide the selection of the appropriate electrode ma-terial for a particular *** main contribution of this article is to identify superior modifying materials that can improve the performance of non-enzymatic electrochemical *** a recent study,

摘要：Treatment of peat soil foundation in Yunnan surrounding Dianchi and Erhai Lakes poses complex problems for engineering *** is insufficient to rely on ordinary cement to reinforce peat *** order to make the reinforcement reliable,this experiment mixed(ultrafine cement)UFC into ordinary cement to form a composite solidify *** study aimed to analyze the influence of UFC proportion on the strength of cement-soil in the peat soil *** compressive strength(UCS)and scanning electron microscope(SEM)tests were conducted on samples soaked for 28 and 90 days,*** test results show that without considering the effects of Humic Acid(HA)and Fulvic Acid(FA),incorporating UFC can significantly improve the UCS of *** rapid hydration of the fine particles generates a large number of cementitious products,improves the cohesion of the soil skeleton,and fills the ***,when the proportion of UFC increases,the aggregate structure formed by a larger quantity of fine particles reduces the hydration rate and degree of cement hydration,making the UCS growth rate of cement-soil *** the peat soil environment,HA significantly weakened the UCS of cement-soil in both physical and chemical ***,UFC can mitigate the adverse effect of HA on cement-soil by its small particle size,high surface energy,and solid binding *** addition,FA has a positive effect on the UCS of cement-soil soaked for 28 days and 90 *** UFC addition could promote the enhancement effect of FA on cement-soil *** test results showed that cement hydration products increased significantly with the increase of UFC proportion,and cementation between hydration products and soil particles was *** size and connectivity of cement-soil pores were significantly reduced,thereby improving cement-soil structural integrity.

摘要：Role based access control is one of the widely used access control *** are investigations in the literature that use knowledge representation mechanisms such as formal concept analysis(FCA),description logics,and Ontology for representing access control ***,while using FCA,investigations reported in the literature so far work on the logic that transforms the three dimensional access control matrix into dyadic formal *** transformation is mainly to derive the formal concepts,lattice structure and implications to represent role hierarchy and constraints of *** this work,we propose a methodology that models RBAC using triadic FCA without transforming the triadic access control matrix into dyadic formal *** discussion is on two lines of *** present how triadic FCA can provide a suitable representation of RBAC policy and we demonstrate how this representation follows role hierarchy and constraints of RBAC on sample healthcare network available in the literature.

摘要：The problem of active vibration control for uncertain linear structural systems with control forces input timedelay is investigated in this ***,the original structural equation is converted to a state-space model by utilizing the matrix ***,according to the obtained model and a special Lyapunov functional,a sufficient condition is achieved for the closed-loop system to be stable with a prescribed level of disturbance ***,in terms of solving these linear matrix inequalities（LMIs）,the state-feed controller is achieved to stabilize the structural system with the performance ‖z‖2<γ‖ω‖***,by introducing the rank-1 vector to describe the system uncertainties,the uncertain system description is obtained,and the stabilizing condition is extended to the uncertain ***,examples are given to show the effectiveness of the proposed methods.

摘要：Heat exchangers are widely used in the process engineering such as the chemical industries, the petroleum industries, and the HVAC applications etc. An optimally designed heat exchanger cannot only help the optimization of the equipment size but also the reduction of the power consumption. In this paper, a new optimization approach called algorithms of changes (AOC) is proposed for design and optimization of the shell-tube heat exchanger. This new optimization technique is developed based on the concept of the book of changes (I Ching) which is one of the oldest Chinese classic texts. In AOC, the hexagram operations in I Ching are generalized to binary string case and an iterative process, which imitates the I Ching inference, is defined. Before applying the AOC to the heat exchanger design problem, the new optimization method is examined by the benchmark optimization problems such as the global optimization test functions and the travelling salesman problem (TSP). Based on the TSP results, the AOC is shown to be superior to the genetic algorithms (GA). The AOC is then used in the optimal design of heat exchanger. The shell inside diameter, tube outside diameter, and baffles spacing are treated as the design (or optimized) variables. The cost of the heat exchanger is arranged as the objective function. For the heat exchanger design problem, the results show that the AOC is comparable to the GA method. Both methods can find the optimal solution in a short period of time.

摘要：Computer experiments are constructed to simulate the behavior of complex physical systems. Uniform designs have good performance in computer experiments from several aspects. In practical use, the experimenter needs to choose a small size uniform design at the beginning of an experiment due to a limit of time, budget, resources, and so on, and later conduct a follow up experiment to obtain precious information about the system, that is, a sequential experiment. The Lee distance has been widely used in coding theory and its corresponding discrepancy is an important measure for constructing uniform designs. This paper proves that all the follow up designs of a uniform design are uniform and at least two of them can be used as optimal follow up experimental designs. Thus, it is not necessary that the union of any two uniform designs yields a uniform sequential design. Therefore, this article presents a theoretical justification for choosing the best follow up design of a uniform design to construct a uniform sequential design that involves a mixture of ω≥ 1 factors with β_k ≥ 2, 1 ≤ k ≤ωlevels. For illustration of the usage of the proposed results, a closer look is given at using these results for the most extensively used six particular cases, three symmetric and three asymmetric designs, which are often met in practice.