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Accurate identification of glass crystallization helps in selecting high electronic conductivity materials

Progress in Natural Science:Materials International 2024年第3期34卷 503-511页

作者： fanhou Kong Shuli Li Suoqi zhao huiwen Li Lin Li Zhenting Zang Rui Zhang hongrui Liu Lehan Wang Changjiu Li Keng h.Chung Dongying Key Laboratory of New Energy Materials and Devices & School of Chemical Engineering Shandong Institute of Petroleum and Chemical Technology Special Glass Key Lab of hainan Province & State Key Laboratory of Marine Resource Utilization in South China Sea Hainan University

Though the current research on vanadium-based glass electrodes has made great progress, the conductivity theory of V-based glasses has not been obviously improved and crystals cannot be positioned precisely. The changes in the valence state of V3+, V4+and V5+are regulated by the strong reducing agent fe2P to realize valence bond transformation of the amorphous electrode, explore the redox process of multi-electron reactions and further optimize the conductivity of electrode materials. VPfe2 and VPfe3 precipitate VO2crystals and VPfe4 precipitates VO2and V6O11crystals. Electron back-scattered diffraction was used to accurately identify the distribution and specific positions of both types of crystals. V6O11crystals exhibit a strong texture according to pole figure and inverse pole figure. XPS reveals that fe2P and V2O5, undergo a redox reaction during the hightemperature melting process, where V5+is reduced to V4+and V3+and V4+renders a positive influence on conductivity. The addition of fe2P increases the content of V4+in the glass and VPfe3 glass contains the highest content of V4+, leading to the highest electronic conductivity. V2O5transforms into VO2crystals and VO2transforms into V6O11with the increase of fe2P content. The type of nanocrystal precipitation in glass affects electronic conductivity.

关键词： Electron back-scattered diffraction Electronic conductivity Glass crystallization Multi-electron reactions V2O5

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Multifunctional Sodium Gluconate Electrolyte Additive Enabling highly Reversible Zn Anodes

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Chemical Research in Chinese Universities 2024年第4期40卷 722-729页

作者： zhao Kang zhao Jianan YU Meng LIU fangming DONG Yang WANG Shiwen ChENG fangyi College of Chemistry Nankai UniversityTianjin300071P.R.China College of New Energy Zhengzhou University of Light IndustryZhengzhou450002P.R.China

Sodium gluconate(SG)is reported as an electrolyte additive for rechargeable aqueous zinc *** SG addition is proposed to modulate the nucleation overpotential and plating behaviors of Zn by forming a shielding buffer layer because of the adsorption priority and large steric hindrance effect,which contributes to limited rampant Zn^(2+)diffusion and mitigated hydrogen evolution and *** the introduction of 30 mmol/L SG in 2 mol/L ZnSO_(4)electrolyte,the Zn anode harvests a reversible cycling of 1200 h at 5 mA/cm^(2)and a high average Coulombic efficiency of Zn plating/stripping(99.6%).full cells coupling Zn anode with V_(2)O_(5)·1.6h_(2)O or polyaniline cathode far surpass the SG additivefree batteries in terms of cycle stability and rate *** work provides an inspiration for design of a high-effective and low-cost electrolyte additive towards Zn-based energy storage devices.

关键词： Electrolyte additive Zn anode Sodium gluconate Adsorption Zn dendrite

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Mechanical behavior and damage constitutive model of sandstone under hydro-mechanical (h-M) coupling

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International Journal of Mining Science and Technology 2024年第6期34卷 837-853页

作者： Tao Tan Chunyang Zhang Yanlin zhao Xiaoshuang Li School of Resources and Environmental Engineering Wuhan University of TechnologyWuhan 430070China State Key Laboratory of Safety and health in Metal Mines Maanshan 243000China Sinosteel Maanshan General Institute of Mining Research Co. Ltd.Maanshan 243000China School of Resource&Environment and Safety Engineering Hunan University of Science and TechnologyXiangtan 411201China School of Urban Construction Changzhou UniversityChangzhouJiangsu 213164China

Underground engineering often passes through water-rich fractured rock masses, which are prone to fracture and instability under the long-term coupling of in-situ stress field and pore water(P-W) pressure, ultimately threatening the stability of underground structures. In order to explore the mechanical properties of rocks under h-M coupling, the corresponding damage constitutive(D-C) model has become the focus of attention. Considering the inadequacy of the current research on rock strength parameters,energy evolution characteristics and D-C model under h-M coupling, the mechanical properties of typical sandstone samples are discussed based on laboratory tests. The results show that the variation of characteristic stresses of sandstone under h-M coupling conforms to the normalized attenuation equation and Mohr-Coulomb(M-C) criterion. The P-W pressure mechanism of sandstone exhibits a dynamic change from softening effect to h-M fracturing effect. The closure stress is mainly provided by cohesive strength, while the initiation stress, damage stress, and peak stress are jointly dominated by cohesive strength and friction strength. In addition, residual stress is attributed to the friction strength formed by the bite of the fracture surface. Subsequently, the energy evolution characteristics of sandstone under h-M coupling were studied, and it was found that P-W pressure weakened the energy storage capacity and energy dissipation capacity of sandstone, and h-M fracturing was an important factor in reducing its energy storage efficiency. finally, combined with energy dissipation theory and statistical damage theory, two types of D-C models considering P-W pressure are proposed accordingly, and the model parameters can be determined by four methods. The application results indicate that the proposed and modified D-C models have high reliability, and can characterize the mechanical behavior of sandstone under h-M coupling, overcome the inconvenience of existing D-C models

关键词： h-M coupling Water-saturated sandstone Mechanical mechanism Energy evolution D-C model

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Quaternion-Based Adaptive Trajectory Tracking Control of a Rotor-Missile with Unknown Parameters Identification

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Defence Technology（防务技术） 2024年第1期31卷 375-386页

作者： Jie zhao Zhongjiao Shi Yuchen Wang Wei Wang Beijing Institute of Technology Beijing 100081China

This paper investigates the adaptive trajectory tracking control problem and the unknown parameter identification problem of a class of rotor-missiles with parametric system ***,considering the uncertainty of structural and aerodynamic parameters,the six-degree-of-freedom(6Do f) nonlinear equations describing the position and attitude dynamics of the rotor-missile are established,respectively,in the inertial and body-fixed reference ***,a hierarchical adaptive trajectory tracking controller that can guarantee closed-loop stability is proposed according to the cascade characteristics of the 6Do f ***,a memory-augmented update rule of unknown parameters is proposed by integrating all historical data of the regression *** long as the finitely excited condition is satisfied,the precise identification of unknown parameters can be ***,the validity of the proposed trajectory tracking controller and the parameter identification method is proved through Lyapunov stability theory and numerical simulations.

关键词： Rotor-missile Adaptive control Parameter identification Quaternion control

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Piezoelectric composite hydrogel with wireless electrical stimulation enhances motor functional recovery of spinal cord injury

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Journal of Materials Science & Technology 2024年第5期172卷 228-239页

作者： Zehao Li Guanlin Li Xinyu Wang Zheng zhao State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Sanya Science and Education Innovation Park of Wuhan University of Technology Sanya 572000China

Electrical stimulation(ES)can restore motor function after spinal cord injury(SCI).however,traditional intraspinal ES has many disadvantages,such as the need for a complex circuitry device,an external power source,and a second surgery to remove the *** materials have received increasing at-tention due to their potential to convert ambient mechanical energy into ES without an external power source or implantation of ***,a novel polydopamine(PDA)coated barium titanate(BaTiO_(3))nanoparticles(BaTiO_(3)@PDA)incorporated silk fibroin(Sf)hydrogel(SfBT)was *** SfBT hy-drogel was crosslinked by horseradish peroxidase(hRP)/hydrogel peroxide(h_(2)O_(2))to integrate the piezo-electric potency of BaTiO_(3)with the thermal sensitivity of hRP/h_(2)O_(2)for SCI *** hydrogel con-taining 5%(w/v)BaTiO_(3)@PDA nanoparticles(SfBT-5),which was selected for in vivo study,exhibited a short gelation time(5 min),suitable storage modulus(925±35 Pa),and wireless ES(average current of 124 nA).Moreover,Basso-Beattie-Bresnahan(BBB)scores test and footprint analysis demonstrated that the SfBT-5 hydrogel successfully enhanced motor functional recovery of *** histopathological assess-ments,the SfBT-5 hydrogel significantly accelerated spinal cord healing,as indicated by smaller lesion cavities(∼16.7%of the SCI group).Meanwhile,the SfBT-5 hydrogel accelerated neurogenesis,facilitated axon regrowth and synapse formation,and promoted ***,this study highlights the potential of piezoelectric hydrogels for SCI regeneration.

关键词： Silk fibroin Barium titanate Piezoelectric hydrogel Spinal cord injury Electrical stimulation

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Plasma-assisted synthesis of porous bismuth nanosheets for electrocatalytic CO_(2)-to-formate reduction

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Journal of Energy Chemistry 2024年第7期94卷 19-28页

作者： Liangping Xiao Qizheng Zheng Rusen Zhou Sifan Liu Yifan zhao Yadong zhao Renwu Zhou Kostya Ken Ostrikov State Key Laboratory of Electrical Insulation and Power Equipment Centre for Plasma BiomedicineSchool of Electrical EngineeringXi'an Jiaotong UniversityXi'an 710049 ShaanxiChina School of Chemistry and Physics QUT Centre for Materials ScienceQueensland University of Technology(QUT)BrisbaneQLD 4000.Australia Department of Physics Research Institute for Biomimetics and Soft MatterFujian Provincial Key Laboratory for Soft Functional MaterialsJiujiang Research InstituteXiamen UniversityXiamen361005FujianChina Department of Biomaterials College of MaterialsXiamen UniversityXiamen 361005FujianChina School of food and Pharmacy Zhejiang Ocean UniversityZhoushan 316022ZhejiangChina

The electrochemical carbon dioxide reduction(eCO_(2)RR)to formate,driven by clean energy,is a promising approach for producing renewable chemicals and high-value *** its potential,further development faces challenges due to limitations in electrocatalytic activity and durability,especially for nonnoble metal-based ***,naturally abundant bismuth-based nanosheets that can effectively drive CO_(2)-to-formate electrocatalytic reduction are prepared using the plasma-activated Bi_(2)Se_(3) followed by a reduction ***-obtained plasma-activated Bi nanosheets(P-BiNS)feature ultrathin structures and high surface *** nanostructures ensure the P-BiNS with outstanding eCO_(2)RR catalytic performance,highlighted by the current density of over 80 mA cm^(-2) and a formate faradic efficiency of>90%.furthermore,P-BiNS catalysts demonstrate excellent durability and stability without deactivation following over 50h of *** selectivity for formate production is also studied by density functional theory(DfT)calculations,validating the importance and efficacy of the stabilization of intermediates(^(*)OChO)on the P-BiNS *** study provides a facile plasma-assisted approach for developing high-performance and low-cost electrocatalysts.

关键词： Plasma-assisted synthesis Plasmaa ctivation Bismuth nanosheet CO_(2)RR formate

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Identification of Motor Nuclei in the Medulla Oblongata of Carp for Biological Control

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Journal of Bionic Engineering 2024年第2期21卷 842-851页

作者： Yang zhao Yong Peng Yudong Wen Lingjun han Yanhong Yan Xueying Dong hui Zhang Zheng zhao Xiaoyue Liu School of Electrical Engineering Yanshan UniversityQinhuangdao066004China School of Mechanical Engineering Yanshan UniversityQinhuangdao066004China Key Laboratory of National Defense of Mechanical Structure and Material Science Under Extreme Conditions Yanshan UniversityQinhuangdao066004China Institute of Marine Science and Engineering Yanshan UniversityQinhuangdao066004China Shijiazhuang University Shijiazhuang050035China

Brain-controlled technology is the key technology in biological control,and the corresponding relationship between animal brain nuclei and motor behavior is the *** purpose of this study was to explore the motor nuclei of the medulla oblongata in *** carps were subjected to electrical stimulation and chemical stimulation experiments,respectively,in the water-free state,and the effective chemical stimulation sites were injected with the pontamine sky blue *** brain tissue sections were obtained by paraffin tissue section technology and the neutral red staining *** comparing the positions of the brain nuclei shown in earlier studies,the motor nerve nuclei in the medulla oblongata were *** brain electrode was implanted into the motor nucleus of the medulla oblongata,and the underwater control experiment and behavioral tests were carried out with different electrical stimulation *** results showed that the abducens nucleus(NVI)was the motor nucleus that controls the ipsilateral steering,and the facial nucleus(NVII)was the motor nucleus that controls the forward *** adjusting the stimulation voltage and the stimulation pulse number,the carp can be stably controlled to achieve a left–right steering motion of 30°–180°and a forward motion of more than 80 cm/*** study indicated that the quantitative control of the steering and forward behavior of the carp can be achieved by electrical stimulation of the NVI and NVII,which provided a certain experimental basis for the accurate control of the carp robot.

关键词： Biological control Carp Medulla oblongata motor nucleus Electrical stimulation technique Chemical stimulation technique

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Diet and monensin influence the temporal dynamics of the rumen microbiome in stocker and finishing cattle

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Journal of Animal Science and Biotechnology 2024年第2期15卷 733-748页

作者： Jianmin Chai Caleb P.Weiss Paul A.Beck Wei zhao Ying Li Jiangchao zhao Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding College of Life Science and EngineeringFoshan UniversityFoshanChina Division of Agriculture Department of Animal ScienceUniversity of ArkansasFayettevilleARUSA Department of Animal and food Sciences Oklahoma State UniversityStillwaterOKUSA Institute of feed Research of Chinese Academy of Agricultural Sciences Key Laboratory of Feed Biotechnology of the Ministry of Agriculture and Rural AffairsBeijing 100193China

Background Stocker cattle diet and management influence beef cattle performance during the finishing stage,but knowledge of the dynamics of the rumen microbiome associated with the host are lacking.A longitudinal study was conducted to determine how the feeding strategy from the stocker to the finishing stages of production affects the temporal dynamics of rumen *** the stocker phase,either dry hay or wheat pasture were provided,and three levels of monensin were *** calves were then transported to a feedlot and received similar finishing diets with or without *** microbial samples were collected on d 0,28,85 during the stocker stage(S0,S28 and S85)and d 0,14,28,56,30 d before slaughter and the end of the trial during the finishing stage(f0,f14,f28,f56,Pre-Ba,and final).The V4 region of the bacterial 16S rRNA gene of 263 rumen samples was *** higher alpha diversity,including the number of observed bacterial features and the Shannon index,was observed in the stocker phase compared to the finishing *** bacterial amplicon sequence variants(ASVs)differentiating different sampling time points were *** treatments during the stocker stage temporally impact the dynamics of rumen *** example,shared bacteria,including Bacteroidales(ASV19)and Streptococcus infantarius(ASV94),were significantly higher in hay rumen on S28,S85,and f0,while Bacteroidaceae(ASV11)and Limivicinus(ASV15)were more abundant in *** affected rumen microbial composition at a specific *** to feedlot significantly influenced microbiome structure and diversity in hay-fed *** taxa associated with body weight were classified,and core microbiotas interacted with each other during the *** In summary,the temporal dynamics of the rumen microbiome in cattle at the stocker and finishing stage are influenced by multiple factors of the feeding *** at the stocker phase may t

关键词： Beef cattle Diet feedlot phase Monensin Next-generation sequencing Rumen microbiota Stocker

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heterocatalytic ethylene methoxycarbonylation via a pseudo-hydride pathway over Pt_(1)/MoS_(2)

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Science China Chemistry 2024年第8期67卷 2427-2428页

作者： Bo-hang zhao Bin Zhang Institute of Molecular Plus Department of ChemistrySchool of ScienceTianjin UniversityTianjin 300072China

Ethylene (C2h4) methoxycarbonylation (EMC) with CO and methanol (Ch3Oh) to methyl propanoate (MP) is industrially important due to its 100% atom efficiency [1].however, the heavy reliance on homogeneous Pd-based catalysts and strong acid media over commercial EMC processes still causes economic and environmental concerns [2]. At present, supported single-atom catalysts (SACs) can serve as bridges for accessing homogeneous catalysts in traditional heterogeneous catalytic processes.

关键词： processes. catalytic hydride

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Nanobodies against African swine fever virus p72 and CD2v proteins as reagents for developing two cELISAs to detect viral antibodies

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Virologica Sinica 2024年第3期39卷 478-489页

作者： Jiahong Zhu Qingyuan Liu Liuya Li Runyu Zhang Yueting Chang Jiakai zhao Siyu Liu Xinyu zhao Xu Chen Yani Sun Qin zhao Department of Preventive Veterinary Medicine College of Veterinary MedicineNorthwest A&F UniversityYangling Observing and Experimental Station of National Data Center of Animal HealthMinistry of AgricultureYangling712100China

African swine fever virus(ASfV)poses a significant threat to the global swine ***,there are no effective vaccines or treatments available to combat ASfV infection in *** primary means of controlling the spread of the disease is through rapid detection and subsequent elimination of infected ***,a lower virulent ASfV isolate with a deleted EP402R gene(CD2v-deleted)has been reported in China,which further complicates the control of ASfV infection in pig ***,an EP402R-deleted ASfV variant has been developed as a potential live attenuated vaccine candidate ***,it is crucial to develop detection methods that can distinguish wild-type and EP402R-deleted ASfV *** this study,two recombinant ASfV-p72 and-CD2v proteins were expressed using a prokaryotic system and used to immunize Bactrian ***,eight nanobodies against ASfV-p72 and ten nanobodies against ASfV-CD2v were *** the production of these nanobodies with horse radish peroxidase(hRP)fusion proteins,the ASfV-p72-Nb2-hRP and ASfV-CD2v-Nb22-hRP fusions were selected for the development of two competitive ELISAs(cELISAs)to detect anti-ASfV *** two cELISAs exhibited high sensitivity,good specificity,repeatability,and *** coincidence rate between the two cELISAs and commercial ELISA kits was 98.6%and 97.6%,***,the two cELISA for detecting antibodies against ASfV demonstrated ease of operation,a low cost,and a simple production *** two cELISAs could determine whether pigs were infected with wild-type or CD2v-deleted ASfV,and could play an important role in monitoring ASfV infections in pig farms.

关键词： African swine fever virus(ASfV) ASfV-p72 ASfV-CD2v Nanobody-hRP Competitive ELISA

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