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Insect Science 2024年第3期31卷 733-747页

作者： Lixian Wu Yajing Xu Liangbin Li Dainan Cao Fang Liu hongxia Zhao Guangdong Key Laboratssory of Animal Conservation and Resource Utilization Guangdong Public Laboratory of Wild Animal Conservation and UtilizationInstitute of ZoologyGuangdong Academy of SciencesGuangzhouChina

during the pupal-adult eclosion process of holometabolous insects,the old cuticle is shed and replaced by a completely different new cuticle that requires tanning and expansion,along with extensive extracellular matrix(ECM)*** vertebrates,matrix metalloproteinases(MMPs),a class of zinc-dependent endopeptidases,play key roles in regulating the ECM that surrounds ***,little is known about these extracellular proteinases available in *** small hive beetle(SHB),Aethina tumida,is a widespread invasive parasite of honey *** this study,6 MMP homologs were identified in the SHB *** interference experiments showed that all 6 AtMmps are not required for the larval-pupal transition,only AtMmp2 was essential for pupal-adult eclosion in *** of AtMmp2 resulted in eclosion defects and wing expansion failure,as well as mortality within 3 d of adult *** analysis revealed that knockdown of AtMmp2 significantly increased expression of the Toll and Imd pathways,chitin metabolism,and cross-linking(such as the pro-phenoloxidase activating cascade pathway and the tyrosine-mediated cuticle sclerotization and pigmentation pathway).These data revealed evolutionarily conserved functions of Mmp2 in controlling adult eclosion and wing expansion,also provided a preliminary exploration of the novel function of regulating Toll and Imd pathways,as well as new insights into how MMPs regulate insect development and defense barriers.

关键词： Aethina tumida adult eclosion immune response matrix metalloproteinase RNAinterference

Prediction of the thermal conductivity of Mg–Al–La alloys by CALPHAD method

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International Journal of Minerals,Metallurgy and Materials 2024年第1期31卷 129-137页

作者： hongxia Li Wenjun Xu Yufei Zhang Shenglan Yang Lijun Zhang Bin Liu Qun Luo Qian Li State Key Laboratory of Advanced Special Steels&Shanghai Key Laboratory of Advanced Ferrometallurgy&School of Materials Science and Engineering Shanghai UniversityShanghai 200444China National Engineering Research Center for Magnesium Alloys Chongqing UniversityChongqing 400044China State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083China College of Materials Science and Engineering Chongqing UniversityChongqing 400044China National Key Laboratory of Advanced Casting Technologies Chongqing UniversityChongqing 400044China

Mg-Al alloys have excellent strength and ductility but relatively low thermal conductivity due to Al *** accurate prediction of thermal conductivity is a prerequisite for designing Mg-Al alloys with high thermal ***,databases for predicting temperature-and composition-dependent thermal conductivities must be *** this study,Mg-Al-La alloys with different contents of Al2La,Al3La,and Al11La3phases and solid solubility of Al in the α-Mg phase were *** influence of the second phase(s) and Al solid solubility on thermal conductivity was *** results revealed a second phase transformation from Al_(2)La to Al_(3)La and further to Al_(11)La_(3)with the increasing Al content at a constant La *** degree of the negative effect of the second phase(s) on thermal diffusivity followed the sequence of Al2La>Al3La>Al_(11)La_(3).Compared with the second phase,an increase in the solid solubility of Al in α-Mg remarkably reduced the thermal *** the basis of the experimental data,a database of the reciprocal thermal diffusivity of the Mg-Al-La system was established by calculation of the phase diagram (CALPHAD)*** a standard error of±1.2 W/(m·K),the predicted results were in good agreement with the experimental *** established database can be used to design Mg-Al alloys with high thermal conductivity and provide valuable guidance for expanding their application prospects.

关键词： magnesium alloy thermal conductivity thermodynamic calculations materials computation

Enhanced photocatalytic ammonia oxidation activity and nitrogen selectivity over Ag/AgCl/N-TiO_(2) photocatalyst

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Journal of Environmental Sciences 2024年第4期138卷 395-405页

作者： Jiaojiao Guan Daorong Li Jiahui Feng Peng Xu Zhaonian Li Siqi Ge hongxia Chen Kunfeng Zhang College of Environmental Engineering Henan University of TechnologyZhengzhou 450001China CAS Key Laboratory of Standardization and Measurement for Nanotechnology National Center for Nanoscience and TechnologyBeijing 100190China Department of Chemistry Tsinghua UniversityBeijing 100084China

The removal of ammonia(NH_(3))emitted from agricultural and industrial activities is of great significance to protect human health and ecological *** NH_(3)oxidation to N2under mild conditions is a promising ***,developing visible light photocatalysts for NH_(3)oxidation is still in its ***,we fabricate N-TiO_(2)and Ag/AgCl/N-TiO_(2)photocatalysts by sol-gel and photodeposition methods,*** introduction of N not only endows TiO_(2)with visible light response(absorption edge at460 nm)but also results in the formation of heterophase junction(anatase and rutile).Thus,N-TiO_(2)shows 2.0 and 1.8 times higher than those over anatase TiO_(2)and commercial TiO_(2)for NH_(3)oxidation under full spectrum ***,surface modification of Ag can simultaneously enhance visible light absorption(generating localized surface plasmon resonance effect)and charge separation ***,the photocatalytic activity of Ag/AgCl/N-TiO_(2)is further ***,the presence of N and Ag also enhances the selectivity of N2product owing to the change of reaction *** work simultaneously regulates photocatalytic conversion efficiency and product selectivity,providing some guidance for developing highly efficient photocatalysts for NH_(3)elimination.

关键词： TiO_(2) Doping Surface modification Photocatalysis NH_(3)elimination

NixB/rGO as the cathode for high-performance aqueous alkaline zinc-based battery

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Chinese Chemical Letters 2024年第10期35卷 474-478页

作者： Xiaoxing Ji Xiaojuan Li Chenggang Wang Gang Zhao hongxia Bu Xijin Xu School of Physics and Technology University of JinanJi'nan 250022China College of Physics and Electronic Engineering Qilu Normal UniversityJi'nan 250200China

Aqueous alkaline zinc batteries(AZBs)exhibit great potential due to their high capacity,high safety and low ***,despite these advantages,the lack of high stability and high utilization rate makes the search for high-performance cathode materials a great ***,an amorphous nickel boride/rGO(NixB/rG O)complex structure was *** a result of abundant unsaturated active sites and synergistic electronic effects,amorphous NixB exhibits excellent energy storage *** well as having high electrical conductivity,rGO avoids aggregation of NixB nanoparticles,ensuring that NixB/rGO electrodes have a high energy storage *** structure has a strong adhesion between NixB and rGO,which protects its stable structure and extends its *** importantly,the NixB/rGO//Zn full battery shows remarkable capacity(228.4 m Ah/g at 2 A/g),extraordinary cycle durability(93.7%retained after1000 cycles)and strong energy density 399.7 Wh/kg,when coupled with NixB/rGO *** work will also shed light on other nickel-zinc batteries in order to achieve super durability and capacity.

关键词： Alkaline aqueous zinc battery Nickel boride rGO Cathode materials Energy density

Construction of a Cu@hollow TS-1 nanoreactor based on a hierarchical full-spectrum solar light utilization strategy for photothermal synergistic artificial photosynthesis

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Carbon Energy 2024年第2期6卷 25-36页

作者： Sixian Zhu Qiao Zhao hongxia Guo Li Liu Xiao Wang Xiwei Qi Xianguang Meng Wenquan Cui Hebei Key Laboratory for Environment Photocatalytic and Electrocatalytic Materials College of Chemical EngineeringNorth China University of Science and TechnologyTangshanChina School of Materials Science and Engineering National Institute for Advanced MaterialsTKL of Metal and Molecule-Based Material ChemistryNankai UniversityTianjinChina Hebei Iron and Steel Laboratory TangshanChina

The artificial photosynthesis technology has been recognized as a promising solution for CO_(2) *** catalysis has been proposed as a novel strategy to promote the efficiency of artificial photosynthesis by coupling both photochemistry and ***,strategies for maximizing the use of solar spectra with different frequencies in photothermal catalysis are urgently ***,a hierarchical full-spectrum solar light utilization strategy is *** on this strategy,a Cu@hollow titanium silicalite-1 zeolite(TS-1)nanoreactor with spatially separated photo/thermal catalytic sites is designed to realize high-efficiency photothermal catalytic artificial *** space-time yield of alcohol products over the optimal catalyst reached 64.4μmol g−1 h−1,with the selectivity of CH3CH2OH of 69.5%.This rationally designed hierarchical utilization strategy for solar light can be summarized as follows:(1)high-energy ultraviolet light is utilized to drive the initial and difficult CO_(2) activation step on the TS-1 shell;(2)visible light can induce the localized surface plasmon resonance effect on plasmonic Cu to generate hot electrons for H2O dissociation and subsequent reaction steps;and(3)low-energy near-infrared light is converted into heat by the simulated greenhouse effect by cavities to accelerate the carrier *** work provides some scientific and experimental bases for research on novel,highly efficient photothermal catalysts for artificial photosynthesis.

关键词： artificial photosynthesis full spectrum nanoreactors photothermal catalysis

The exploration and practice of low-altitude airspace flight service and traffic management in China

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Green Energy and Intelligent Transportation 2024年第2期3卷 1-8页

作者： Xiangmin Guan hongxia Shi Dongsong Xu Binhua Zhang Jian Wei Jun Chen CAAC Key Laboratory of General Aviation Operation Department of General AviationCivil Aviation Management Institute of ChinaBeijing 100102China Research Institute of Civil Aviation Regulations and Standardization China Academy of Civil Aviation Science and TechnologyBeijing 100028China Department of Technology Platform Phoenix Wings Technology(Shen zhen)Co.LtdShenZhen 518054China Shenzhen Highgreat Innovation Technology Development Co. Ltd dShenzhen 518000China School of Engineering and Materials Science Queen Mary University of LondonLondonE14NSUK

due to the inherent nature of being highly digitalized,networked and intelligent,Unmanned Aerial System(UAS)operations pose a huge challenge to traditional aviation regulation and technical *** to keep safe,efficient and integrated operation for different Airspace users has become a pressing issue faced by civil aviation around the *** paper focuses on the main operational scenarios and characteristics of unmanned aviation development in *** operational characteristics and associated challenges due to diverse low-altitude users are analyzed,including operation concepts,UAS traffic management,technological test and verification,and *** light on the practices in Europe and the United States,this paper summarizes China's practices and progress in low-altitude operations management,and analyzes future technological development needs and trends,as well as feasible implementation pathways and measures based on actual needs.

关键词： UAS Low-altitude airspace UAS traffic management Exploration and practice

Frost Resistance of Pervious Concrete Mixed with Waste Glass Powder

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Journal of Wuhan University of Technology(Materials Science) 2024年第5期39卷 1325-1336页

作者： AN Baofeng LI Qiong QIAO hongxia SU Rui WANG Xi WANG Chaoqun JIAO Daowei School of Civil Engineering Lanzhou University of TechnologyLanzhou 730050China Gansu Advanced Civil Engineering Materials Engineering Research Center Lanzhou 730050China China Construction First Group The Fifth Construction Co.Ltd Beijing 100000China

The contents of waste glass powder(WGP)(0%,10%,15%,20%,25%)and water-binder ratio(W/C)(0.24,0.26,0.28)were used as influencing factors,and the quality loss rate(Δm)and compressive strength loss rate(Δfc)were used as characterization *** Ca/Si ratio and main element contents of C-S-H gels with different WGP content were investigated by energy dispersive spectrometry(EDS).The pore structure evolution characteristics of WGP composite cementing materials were investigated by low field nuclear magnetic resonance(NMR).UsingΔfc as the index of frost resistance degradation and Weibull function,the frost resistance degradation of glass doped pervious concrete(WGP-PC)was *** results show that,with WGP,for the same number of cycles,Δm andΔfc decrease and increase with the increase of *** the same WGP content,Δm andΔfc decrease first and then increase with the increase of W/*** 100 freeze-thaw cycles,the samples with WGP content of 20%and W/C of 0.26 have the best *** tests show that with the increase of WGP content,the Ca/Si ratio of C-S-H gel decreases at first and then increases with the increase of WGP *** extreme value of Ca/Si is 2.36 when WGP is added by 20%.The pore volume of hardened paste with 20%WGP content decreased by 18.6%compared with that of cement system without *** overall compactness of the specimen was *** the basis of the test data,a life prediction model was established according to Weibull *** experiment showed thatΔfc could be used as a durability degradation index,and the slope of the reliability curve became gentle after WGP was added,which reduced the damage degradation rate of PC.W/C was ***'s about 5000 hours.

关键词： pervious concrete glass powder frost resistance energy dispersive analysis test low field nuclear magnetic resonance instrument life prediction

Autophagy-targeting modulation to promote peripheral nerve regeneration

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Neural Regeneration Research 2025年第7期20卷 1864-1882页

作者： Yan Chen hongxia Deng Nannan Zhang Department of Obstetrics and Gynecology West China Second HospitalSichuan UniversityChengduSichuan ProvinceChina Key Laboratory of Birth Defects and Women and Children’s Diseases Ministry of EducationSichuan UniversityChengduSichuan ProvinceChina Laboratory of Reproductive Endocrinology and Reproductive Regulation Sichuan UniversityChengduSichuan ProvinceChina National Center for Birth Defect Monitoring West China Second University HospitalSichuan UniversityChengduSichuan ProvinceChina

Nerve regeneration following traumatic peripheral nerve injuries and neuropathies is a complex process modulated by diverse factors and intricate molecular *** studies have focused on factors that stimulate axonal outgrowth and myelin ***,recent studies have highlighted the pivotal role of autophagy in peripheral nerve regeneration,particularly in the context of traumatic ***,autophagy-targeting modulation has emerged as a promising therapeutic approach to enhancing peripheral nerve *** current understanding suggests that activating autophagy facilitates the rapid clearance of damaged axons and myelin sheaths,thereby enhancing neuronal survival and mitigating injury-induced oxidative stress and *** actions collectively contribute to creating a favorable microenvironment for structural and functional nerve regeneration.A range of autophagyinducing drugs and interventions have demonstrated beneficial effects in alleviating peripheral neuropathy and promoting nerve regeneration in preclinical models of traumatic peripheral nerve *** review delves into the regulation of autophagy in cell types involved in peripheral nerve regeneration,summarizing the potential drugs and interventions that can be harnessed to promote this *** hope that our review will offer novel insights and perspectives on the exploitation of autophagy pathways in the treatment of peripheral nerve injuries and neuropathies.

关键词： autophagy autophagy related genes Charcot–Marie–Tooth diseases diabetic peripheral neuropathy metformin myelination peripheral nerve injury Schwann cells sciatic nerve Wallerian degeneration

Toward understanding the cross-linking from molecular chains to aggregates by engineering terminals of supramolecular hyperbranched polysiloxane

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Aggregate

Aggregate 2024年第1期5卷 228-235页

作者： Yuanbo Zhang Junshan Yuan Jingzhi Hu Zhixuan Tian Weixu Feng hongxia Yan Shaanxi Key Laboratory of Macromolecular Science and Technology Xi’an Key Laboratory of Hybrid Lumines-cent Materials and Photonic DeviceSchool of Chemistry and Chemical engineeringNorthwestern Polytechnical UniversityXi’anChina

Crosslinking thermosets with hyperbranched polymers confers them superior comprehensive ***,it still remains a further understanding of polymer crosslinking from the molecular chains to the role of *** this study,three hyperbranched polysiloxane structures(HBPSi-R)are synthesized as model macromolecules,each featuring distinct terminal groups(R denotes amino,epoxy,and vinyl groups)while similar molecular backbone(Si-O-C).These structures were subsequently copolymerized with epoxy monomers to construct interpenetrating HBPSi-R/epoxy/anhydride co-polymer *** spatial molecular configuration and flexible Si-O-C branches of HBPSi-R endow them with remarkable reinforcement and toughening ***,an optimum impact strength of 28.9 kJ mol^(−1) is achieved with a mere 3%loading of HBPSi-V,nearly three times that of the native epoxy(12.9 kJ mol^(−1)).By contrasting the terminal effects,the aggregation states and crosslinking modes were proposed,thus clarifying the supramolecular-dominant aggregation mechanism and covalent-dominant dispersion mechanism,which influences the resulting material *** work underscores the significance of aggregate science in comprehending polymer crosslinking and provides theoretical insights for tailoring material properties at a refined molecular level in the field of polymer science.

关键词： aggregates crosslinking hyperbranched polymers

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关于研究生招生管理信息化建设的研究探讨

湖北招生考试 2023年第4期 23-25页

作者：都红霞中国美术学院浙江杭州310009

近年来我国研究生招生规模日益扩大,传统的人工管理模式已不能适应时代的发展需求,招生管理工作信息化势在必行。结合高校当前研究生招生工作的具体情况,深入分析探讨信息化建设背后的迫切性和必要性,提出几点实施途径及方法建议,旨在... 详细信息

近年来我国研究生招生规模日益扩大,传统的人工管理模式已不能适应时代的发展需求,招生管理工作信息化势在必行。结合高校当前研究生招生工作的具体情况,深入分析探讨信息化建设背后的迫切性和必要性,提出几点实施途径及方法建议,旨在为后续研究生招生管理信息化的发展提供路径支持。

关键词：研究生招生招生管理信息化