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Determining AC Magnetic Susceptibility of Kilogram-Level Test Masses for TianQin 认领 引用
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作者 Jia-Hao Xu Wen-Long Ma +3 位作者 Ya-Ting Zhang Qing-Lan Wang Lin Zhu Qi Liu 《Chinese Physics Letters》 SCIE EI CAS CSCD 2025年第7期489-493,共5页
The effect from the interaction of the alternating current(AC)magnetic field with kilogram-level test mass(TM)limits the detectivity of the TianQin space-based gravitational wave detection.The quantifed effect require... The effect from the interaction of the alternating current(AC)magnetic field with kilogram-level test mass(TM)limits the detectivity of the TianQin space-based gravitational wave detection.The quantifed effect requires the determination of the AC magnetic susceptibilityχ(f)of the TM.A torque method is proposed to measure theχ(f)of kg-level samples at the mHz band with a precision of 1×10-7.Combined with our previous work[Phys.Rev.Appl.18044010(2022)],the general frequency-dependent susceptibility of the alloy cube with side length L and electrical conductivityσis determined asχ(f)=χ0+(0.24±0.01)σμ0L2f from 0.1 mHz to 1 Hz.The determination is helpful for the preliminary estimation of the in-band eddy current efect in the TianQin noise budget.The technique can be adopted to accurately measureχ(f)of the actual TM in other precision experiments,where the magnetic noise is a signifcant detection limit. 展开更多
关键词 gravitational wave detection quantifed effect determination ac magnetic susceptibility f magnetic noise torque method Tianqin ac magnetic susceptibility eddy current effect
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Strategic plan for earthquake forecasting in China (2025−2035): A brief summary 认领 引用 被引量：1
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作者 Zhigang Shao Rui Yan +6 位作者 Wuxing Wang Qi Liu Lingyuan Meng Zhengyang Pan Zhenyu Wang Wei Yan Chong Yue 《Earthquake Science》 CAS CSCD 2026年第2期214-219,共6页
The basic condition of earthquake disasters in China is featured by high frequency,strong intensity,wide distribution,and heavy losses.Earthquake forecasting plays a critical role in reducing seismic risks.To better a... The basic condition of earthquake disasters in China is featured by high frequency,strong intensity,wide distribution,and heavy losses.Earthquake forecasting plays a critical role in reducing seismic risks.To better advance earthquake predicting efforts,the China Earthquake Administration released the Strategic Plan for Earthquake Forecasting in China(2025−2035)on the occasion of the 50th anniversary of the Haicheng earthquake.Here we briefly introduce the main contents of the Strategic Plan,including the main progress,strategic objectives,and development directions of earthquake forecasting in China. 展开更多
关键词 strategic plan earthquake forecasting China Haicheng earthquake earthquake disasters seismic risks strategic planincluding seismic losses
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Photostabilization of Poly(butylene adipate-co-terephthalate)(PBAT)Films with Hindered Amine Light Stabilizers:Performance Evaluation and Mechanistic Insights 认领 引用 被引量：1
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作者 Yang Wang Wen-Qing He +9 位作者 Su-Nan Tian Yue Wang Run-Hao Bai Aurore Richel Qiu-Yun Liu Jia-Lei Liu Cai-Bin Li He-Qing Cai Zhi-Chao Zhen Qi Liu 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2026年第4期1046-1058,I0014,共13页
The application of poly(butylene adipate-co-terephthalate)(PBAT)biodegradable plastics has long been constrained by insufficient light aging resistance.Hindered amine light stabilizers(HALSs),known as eco-friendly add... The application of poly(butylene adipate-co-terephthalate)(PBAT)biodegradable plastics has long been constrained by insufficient light aging resistance.Hindered amine light stabilizers(HALSs),known as eco-friendly additives,can scavenge free radicals to enhance polymer durability.However,rough choices have resulted in wastage of resources and environmental pressure.Based on the application of plastic films as the background for use,this study systematically evaluates application effects of five HALSs.The films underwent accelerated aging for various durations and were further investigated by a combination of experiments and molecular simulation.Results showed that all HALSs mitigated PBAT light aging,with Chimassorb-944(UV-944)and Tinuvin-770(UV-770)performing the best for real applications.Quantum chemical calculation results showed that UV-944 had stronger anti migration ability.After 300 h of aging,films with UV-944 and UV-770 retained superior tensile strength and elongation at break in the transverse direction compared to neat PBAT films.Polymeric HALSs provided better long-term stability than small-molecule ones.Further spectra analysis indicated that stronger C―O bonds in HALS/PBAT composites correlated with improved photostability.This study offers valuable insights into improving weather resistance of PBAT biodegradable films and optimizing the real application of HALSs. 展开更多
关键词 Poly(butylene adipate-co-terephthalate) Hindered amine light stabilizers Accelerated aging Light aging resistance Mechanism
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Candida-mediated vertical transmission of Helicobacter pylori in C57BL/6J mice 认领 引用 被引量：1
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作者 Xiao-Li Xu Ting-Ting Luo +8 位作者 Qi Liu Gu-Zhen Cui Dao-Yan Wu Xiao-Juan Wu Ting-Xiu Yang Jian-Chao Sun Hui-Feng Jian Shu-Wei Zhuo Zheng-Hong Chen 《World Journal of Gastroenterology》 SCIE CAS 2026年第7期135-155,共21页
BACKGROUND Although Helicobacter pylori(H.pylori)can cause a range of gastric diseases and affects approximately 50% of the global population,its routes of transmission have yet to be sufficiently clarified.In a preli... BACKGROUND Although Helicobacter pylori(H.pylori)can cause a range of gastric diseases and affects approximately 50% of the global population,its routes of transmission have yet to be sufficiently clarified.In a preliminary study,we found that H.pylori can reside within the cells of Candida yeasts,with maternal Candida serving as a potential reservoir for the transmission of H.pylori to neonates during delivery.AIM To study the route of H.pylori transmission from mothers to offspring.METHODS We established vaginal and gastric infection models using female C57BL/6J mice infected with H.pylori 16S rDNA and urease A(ureA)genes-positive Candida.The successfully infective female mice were then mated with normal male mice until conception(classified vaginal and cesarean deliveries).The H.pylori infection status in female mice and their offspring was assessed using enzyme-linked immunosorbent assay,polymerase chain reaction,Candida isolation and culture,and histopathological examination.RESULTS The enzyme-linked immunosorbent assay results showed an increase in H.pylori-specific IgG and IgM serum antibodies in the H.pylori-positive Candida group maternal and offspring mice compared to the control and normal groups.H.pylori 16S rDNA or ureA genes was detected in samples from some of the maternal and offspring mice,including gastric mucosa,intestinal contents,vaginal tissue,placenta,and fetal membranes.In addition,H.pylori 16S rDNA-or ureA gene-positive Candida were successfully isolated from the tissues of some postpartum maternal and offspring mice.Moreover,histopathological examination revealed bleeding spots and inflammatory cell infiltration in the gastric mucosal tissues of some maternal mice and offspring in the H.pylori-positive Candida group.CONCLUSION In conclusion,H.pylori infection of newborns may be acquired through vertical transmission during childbirth,potentially originating from the mother’s Candida that has been internalized by H.pylori. 展开更多
关键词 Helicobacter pylori Candida Internalization Reservoir Vertical transmission
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Description of new species of Oculatellaceae(Oculatellales,Cyanobacteria)from China based on the polyphasic approach 认领 引用
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作者 Jie WANG Ting ZHANG +5 位作者 Xianli YUE Qinghua WANG Mingyang XU John Patrick KOCIOLEK Jingchun LI Qi LIU 《Journal of Oceanology and Limnology》 SCIE CAS CSCD 2026年第2期851-866,共16页
Two filamentous cyanobacteria,isolated from different habitats in Yunnan Province,China,were described.Phylogenetic analysis and taxonomic identification were performed using a polyphasic approach that included morpho... Two filamentous cyanobacteria,isolated from different habitats in Yunnan Province,China,were described.Phylogenetic analysis and taxonomic identification were performed using a polyphasic approach that included morphological,ecological,and molecular data.Their morphological characteristics and microscopic structures were observed and recorded using an optical microscope.Filaments of the strain SXACC0113 are yellowish-green and relatively wide,ranging from 1.1 to 4.8μm,and the cells are sometimes inflated.Strain SXACC0116 have no false branching,and the apical cells are cylindrical.Phylogenetic trees were constructed using maximum likelihood(ML)and bayesian inference(BI)based on the 16S rRNA gene sequences.The analysis showed that the algal strain SXACC0113 was distributed in the Elainella clade,and its similarity to the 16S rRNA genes of other species in the genus Elainella was 97.9%–98.2%.The strain SXACC0116 was distributed in the Pegethrix clade,and its similarity to the 16S rRNA genes of other species in the genus Pegethrix was 95.4%–97.3%.Additionally,unique forms were found in the D1-D1ʹ,Box B,and V3 helices of the 16S–23S internal transcribed spacer(ITS)secondary structure in these strains.These findings support the establishment of two new species,named Elainella yunnanensis sp.nov.and Pegethrix yunnanensis sp.nov.This discovery increases the diversity of cyanobacterial species in China,provides a scientific basis for further revision and classification of cyanobacteria,and supplements algae research information in China. 展开更多
关键词 Elainella Pegethrix Oculatellaceae new species polyphasic approach phylogeny
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Porous Mn2O3@C Cathode With High Activity and Long Lifespan for Aqueous Zinc Ion Batteries 认领 引用
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作者 Cheng-Jie Yin Lan Li +3 位作者 Hui-Ying Yao Jin-Song Hu Qi Liu Guo-Zhao Fang 《Rare Metals》 SCIE EI CAS CSCD 2026年第1期291-304,共14页
Manganese-based oxides are widely employed as cathode materials for aqueous zinc ion batteries(AZIBs) due to their low toxicity and high theoretical specific capacity.However,their inherent poor electrical conductivit... Manganese-based oxides are widely employed as cathode materials for aqueous zinc ion batteries(AZIBs) due to their low toxicity and high theoretical specific capacity.However,their inherent poor electrical conductivity,coupled with the dissolution of manganese into the electrolyte,often leads to structural degradation of the cathode.To address these challenges,Mn-MOF was utilized as a precursor to synthesize a corncob popcorn-like Mn2O3@C composite with high activity and long lifespan for AZIBs.This distinctive porous carbon encapsulation architecture leverages oxygen vacancies to modulate the spacing of Mn metal oxide layers and alter the valence states of metal ions,thereby enhancing both structural stability and conductivity,and reducing the Zn2+ diffusion path.The porous structure also improves the wettability of the electrode surface and electrolyte penetration,and provides ample and rapid ion transport channels.Consequently,the fabricated corncob popcorn-like Mn2O3@C exhibits an outstanding specific capacity of 570.5 mA h g-1 at 0.1 A g-1 and a capacity retention of over 95% after 3000 cycles at 1 A g-1.The Zn2+ storage mechanism was elucidated through various ex situ characterizations,revealing that the storage mechanism is governed by a mixed H+/Zn2+ co-insertion/de-insertion process. 展开更多
关键词 aqueous zinc ion batteries manganese oxides metal organic framework Mn-MOF oxygen vacancies
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Enhanced performance and flexibility of perovskite/silicon tandem solar cells via uniform submicron pyramids 认领 引用
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作者 Qi Liu Junjun Li +9 位作者 Fei Wang Shuangbiao Xia Yuhui Ji Yutao Wang Yunren Luo Jian Yu Fanying Meng Liping Zhang Zhengxin Liu Wenzhu Liu 《ENGINEERING Energy》 SCIE EI CAS CSCD 2026年第3期101-109,共9页
The interfacial stress between silicon bottom cell and perovskite top cell remains a critical challenge for flexible perovskite/silicon tandem solar cells,leading to interfacial delamination and device degradation.In ... The interfacial stress between silicon bottom cell and perovskite top cell remains a critical challenge for flexible perovskite/silicon tandem solar cells,leading to interfacial delamination and device degradation.In this work,the effect of the thickness and pyramid size on mechanical properties of silicon wafers are investigated,demonstrating that thinner wafers and smaller pyramids significantly enhance the flexural strength of thin silicon wafers by mitigating stress concentration effects.Based on these findings,a synergistic optimization strategy is proposed that employs precise wet-etching control to fabricate small-sized,high-density,uniform pyramids on 55μm silicon wafers for efficient and flexible perovskite/silicon tandem solar cells.By optimizing the texturing duration,this approach simultaneously enhances the minority carrier lifetime(τ)and achieves an excellent implied open-circuit voltage(iVoc).Furthermore,the uniform submicron-scale pyramid structure promotes high-quality perovskite film formation and improves interfacial contact properties.As a proof of concept,monolithic flexible perovskite/silicon tandem devices fabricated on such uniformly textured pyramids delivered a power conversion efficiency(PCE)of 30.04%.These devices promise for low-cost,lightweight and flexible photovoltaic applications. 展开更多
关键词 submicron pyramids uniform perovskites silicon flexible tandem solar cells
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Intelligent evolution strategies for high-performance cutting tools:status,challenges,and trends 认领 引用
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作者 Nian Wan Zhihao Wang +2 位作者 Biao Zhao Wenfeng Ding Qi Liu 《International Journal of Extreme Manufacturing》 SCIE EI CAS CSCD 2026年第2期250-283,共34页
Traditional tools have limited adaptability in complex machining environments due to their lack of working-condition perception and autonomous regulation.With advances in sensors,materials,and data-processing technolo... Traditional tools have limited adaptability in complex machining environments due to their lack of working-condition perception and autonomous regulation.With advances in sensors,materials,and data-processing technologies,tool design is shifting from a single-function‘mechanical arm’for cutting towards integrated intelligent terminals.This paper systematically reviews progress in intelligent tool technology from two perspectives:design and regulation.For intelligent design,the fundamental principles of condition-perception tools equipped with built-in multi-type sensors are discussed,enabling in situ,real-time monitoring of multidimensional parameters such as cutting force,temperature,and vibration.Force monitoring is achieved through elastic deformation or dynamic charge response,temperature monitoring through the thermoelectric effect,and vibration monitoring through micro-displacement and intensity detection.The design focus emphasises sensor miniaturisation and integration,balancing measurement accuracy with tool stiffness while minimising machining interference.In regulation,key technologies for constructing closed-loop control systems(CLCS)are summarised,which dynamically adjust cutting speed,feed rate,and other parameters based on sensed data,achieving precise control of force,temperature,and vibration via feedback mechanisms and driving units.Breakthroughs in tool wear compensation(TWC)mechanisms are introduced.Multi-source signal fusion combined with deep learning algorithms is further examined for improving monitoring accuracy and remaining useful life(RUL)prediction.Through model predictive control,intelligent regulation of cutting parameters within process flows is realised.Finally,challenges such as sensor reliability,multi-source coupling,and balancing cost with industrial applicability are analysed.Future directions highlight novel structural designs,high-performance material development,and multi-technology integration,aiming to establish a fully intelligent machining system through the integrated design of‘perception-decision-execution’. 展开更多
关键词 intelligent tool condition perception process intelligent control novel tool structure multi-technology integration
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Proteomic analysis of leaf apoplast reveals that a jasmonateregulated CHIA participates in the response to cold and drought stress in jojoba 认领 引用
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作者 Lamei Zheng Bojing Li +3 位作者 Qi Liu James Edward Richardson Yijun Zhou Fei Gao 《Horticultural Plant Journal》 SCIE CAS CSCD 2026年第7期1697-1718,共22页
Jojoba[Simmondsia chinensis(Link)Schneider]is sensitive to low temperatures,which hinders its cultivation in temperate arid regions.The apoplast is a cellular component outside the plasma membrane of plant cells and i... Jojoba[Simmondsia chinensis(Link)Schneider]is sensitive to low temperatures,which hinders its cultivation in temperate arid regions.The apoplast is a cellular component outside the plasma membrane of plant cells and is widely involved in the response of plants to environmental stress.Here,we used the infiltration-centrifugation method to extract apoplast fluid from jojoba leaves and analyzed changes in the apoplast proteome after cold acclimation using quantitative proteomics.In total,751 apoplast proteins were identified in jojoba,and the abundance of 200 proteins showed significant changes after cold acclimation.These proteins were primarily involved in defense,cell wall modification,carbohydrate metabolism,and redox balance.We also investigated the function and regulation of a cold acclimation-responsive class III chitinase ScCHIA.The results showed that the overexpression of ScCHIA enhanced the tolerance of Arabidopsis,yeast,and jojoba to low temperature and osmotic stress.Under cold stress,ScCHIA-overexpressing Arabidopsis accumulated more osmolytes,activated antioxidant enzymes,and reduced stomatal aperture size,which may contribute to enhanced tolerance to cold stress.ScCHIA was induced by methyl jasmonate(MeJA)application,and electrophoretic mobility shift assay(EMSA),yeast one-hybrid(Y1H),and luciferase activity assays demonstrated that an E-box cis-acting element on the ScCHIA gene promoter mediated regulation of ScCHIA by MeJA signaling,indicating that elevated levels of MeJA caused by cold acclimation may promote the expression of ScCHIA,thereby enhancing the cold tolerance of jojoba.Our research highlights the important role of the apoplast in plant response to low temperature stress and improves the understanding of the functions and regulatory mechanisms of plant chitinases in abiotic stress response. 展开更多
关键词 Simmondsia chinensis Apoplast Proteome Chitinase Abiotic stress
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Triboelectric Nanogenerators for Thermal Management Application:Current Progress and Future Prospects 认领 引用
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作者 Jia‑Qi Lang Lei Chen +2 位作者 Xing‑Xiang Ji Qi Liu Ming‑Guo Ma 《Nano-Micro Letters》 SCIE EI CAS CSCD 2026年第8期477-540,共64页
The rapid development of wearable electronics,self-powered systems,and the Internet of Things urgently requires efficient thermal management(TM)technologies and sustainable energy solutions.However,triboelectric nanog... The rapid development of wearable electronics,self-powered systems,and the Internet of Things urgently requires efficient thermal management(TM)technologies and sustainable energy solutions.However,triboelectric nanogenerator(TENG)and their integrated electronic components inevitably generate or accumulate Joule thermal.It led to performance degradation or even device failure.This review focuses on the research progress in integrating advanced TM technologies into TENGs,aiming to provide comprehensive insights for constructing high-performance and highly stable self-powered systems.The scope of this review encompasses:(i)systematically summarizing the design and development of TM-TENG systems based on key materials,such as graphene,carbon nanotubes,MXene,cellulose,and phase change materials,(ii)elucidating the bidirectional coupling mechanism between triboelectric charge generation and thermal management,along with a critical analysis of existing theoretical models,and(iii)detailing the multifunctional integration and applications potential of TM-TENGs in the fields including thermal conversion,thermal energy harvesting,storage,actuation,and conduction.The bidirectional coupling mechanisms between triboelectric charge generation and thermal management are thoroughly dissected at a theoretical level.The predominant physical models explaining the interaction phenomena between frictional heating and thermal management are reviewed,with critical analysis of their applicability and limitations.Furthermore,this work discusses the current challenges and future directions in this field and proposes strategic recommendations for realizing more advanced TM-TENG systems.The primary objectives of this review are to synthesize existing knowledge,clarify interaction mechanisms,and promote interdisciplinary development at the intersection of thermal management and energy harvesting. 展开更多
关键词 Triboelectric nanogeneratorsl Thermal management Energy harvesting Phase change material
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Genome-wide association study of sucrose content and stem diameter in sugarcane(Saccharum spp.) 认领 引用
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作者 Fenggang Zan Zhuandi Wu +10 位作者 Chengcai Xia Long Zhao Qi Liu Zihao Wang Yanjie Lu Meiling Zou Yong Zhao Peifang Zhao Xuan Luo Jiayong Liu Zhiqiang Xia 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2026年第5期1939-1948,共10页
Increasing the sucrose content of sugarcane,a major sugar crop,is a key breeding objective.However,the complex genetic background of sugarcane affects development of sugarcane hybrids.In this study,we sequenced 292 su... Increasing the sucrose content of sugarcane,a major sugar crop,is a key breeding objective.However,the complex genetic background of sugarcane affects development of sugarcane hybrids.In this study,we sequenced 292 sugarcane germplasm accessions and identified 2,542,965 single nucleotide polymorphisms(SNPs) and insertions/deletions(InDels).We performed a genome-wide association study(GWAS) for two important sugarcane traits:sucrose content and stem diameter.Both traits followed a normal distribution and showed typical characteristics of quantitative traits.Population structure analysis revealed four subpopulations with an average genetic distance of 0.236.GWAS of the sucrose content detected 27 SNPs.After annotating genes at or near significant loci,17 candidate genes were screened.For stem diameter,GWAS revealed 19 SNPs,from which 9 candidate genes were identified.These results improve our understanding of genetic mechanisms affecting sucrose content in sugarcane,and identify important genetic resources to accelerate breeding of new sugarcane varieties with high sucrose content. 展开更多
关键词 sugarcane sucrose content stem diameter genome-wide association study(GWAS)
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Emerging technologies for advancing molecular and cellular research in bats 认领 引用
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作者 Peng Chen Zhen-Na Zhang +4 位作者 Rong-Song Luo Zeng-Liang Zhang Qi Liu Cheng-Gang Zou Zhen Liu 《Zoological Research》 SCIE CSCD 2026年第1期215-232,共18页
Bats represent a remarkable mammalian lineage,distinguished by the evolution of powered flight,sophisticated echolocation,exceptional longevity,and robust resistance to viral infections.These adaptations have contribu... Bats represent a remarkable mammalian lineage,distinguished by the evolution of powered flight,sophisticated echolocation,exceptional longevity,and robust resistance to viral infections.These adaptations have contributed to their rapid and extensive diversification over a short evolutionary period.Extensive research on bat biology has elucidated key aspects of species diversity,adaptive evolution,and the molecular frameworks that confer resistance to viral pathogens.Recent integration of high-resolution multi-omics,single-cell transcriptomics,and advanced three-dimensional culture systems has significantly expanded exploration of bat biology at the molecular and cellular levels.This review consolidates current advances in our understanding of bat species diversification,development,and immunological adaptations with relevance to human health.Emphasis is placed on emerging technologies and methodologies that have transformed the study of bat physiology and hostpathogen interactions.Prospective avenues for research are also outlined,including the development of new animal models and the application of cutting-edge biotechniques.These advances are anticipated to expand the utility of bats as a critical platform for biomedical and evolutionary insight. 展开更多
关键词 Bat Evolution Adaptation Organoid Artificial Intelligence
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Asymmetric oxygen-bridged Bi-In dual sites for efficient photothermal CO2 methanation 认领 引用
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作者 Mang Zheng Qi Li +4 位作者 Qianxi Liu Huiquan Gu Mingyang Liu Qi Liu Baojiang Jiang 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 2026年第4期351-362,共12页
Photothermal coupling catalytic CO2/H2O to CH4 is recognized as an effective strategy for addressing environmental concerns and energy crisis.However,hydrogen evolution reaction(HER)competition and weak inter... Photothermal coupling catalytic CO2/H2O to CH4 is recognized as an effective strategy for addressing environmental concerns and energy crisis.However,hydrogen evolution reaction(HER)competition and weak intermediate adsorption limiting CH4 selectivity and yield during the reaction process.Herein,we incorporate Bi into the In2O3 lattice to create an oxygen-bridged asymmetric bimetallic In-O-Bi(In-O-Bi bridge)sites.The optimized Bi/In2O3 catalyst achieves CH4 yield of 214.1μmol·g-1 with 96.7%selectivity.The exceptional catalytic activity of Bi/In2O3 stems from two key synergistic effects:(1)the cooperative interaction between Bi and In as p-block metals effectively suppress the competing HER,and(2)the unique In-O-Bi bridge configuration induces significant electron delocalization through p-orbital hybridization.This electronic modulation creates highly active catalytic centers,with In sites preferentially facilitating H2O dissociation while Bi sites selectively promote CO2 reduction.Moreover,the electron delocalization effect in the In-O-Bi bridge sites enhances the adsorption and electron transfer capabilities of the Bi/In2O3 surface for key CHO species,and reduces the energy barrier,thereby enabling efficient CH4 production.These findings provide crucial insights into the design of photothermal catalysts,highlighting the transformative potential of oxygen-bridged asymmetric bimetallic units in efficient CO2 methanation and sustainable energy technologies. 展开更多
关键词 Photothermal catalysis CO2methanation Orbital hybridization Electron delocalization In-O-Bi bridge sites
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Prompt fission neutron uranium logging(Ⅲ):logging instrument 认领 引用
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作者 Hai‑Tao Wang Yan Zhang +9 位作者 Chi Liu Jian‑Qiang Xu Li‑Jiao Zhang Zhi‑Feng Liu Xiong‑Jie Zhang Rui Chen Qi Liu Ren‑Bo Wang Shu‑Min Zhou Bin Tang 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2026年第7期115-127,共13页
The domestically developed prompt fission neutron uranium logging(PFNUL)instrument for uranium exploration represents a significant advancement in China’s deep uranium mining efforts,although it has considerable chal... The domestically developed prompt fission neutron uranium logging(PFNUL)instrument for uranium exploration represents a significant advancement in China’s deep uranium mining efforts,although it has considerable challenges and complexity.This paper presents the development of a new prompt fission neutron uranium logging instrument(named UNL4)that integrates a domestic D-T neutron generator,two 3He proportional detectors,a lanthanum bromide(LaBr3)gamma-ray detector,and a digital multi-channel pulse amplitude analyzer.The near 3He detector is shielded with 1 mm of cadmium(Cd)and 5 mm of high-density polyethylene(HDPE),enabling efficient epithermal neutron detection,whereas the far 3He detector measures thermal neutrons.A LaBr3 detector is employed for gamma-ray detection,primarily originating from uranium decay.Highspeed analog-to-digital converter(ADC)and field-programmable gate array(FPGA)technologies are used to achieve rapid acquisition and transmission of both dual-energy neutron time spectra and gamma spectra.Moreover,this paper proposes a fast signal-shaping method,which reduces the dead time effect in 3He detectors on neutron time spectra.Experiments conducted in standard model boreholes with varying uranium contents demonstrated a strong linear relationship between the epithermal-to-thermal neutron ratio(E/T)and uranium content,with a fitting coefficient of R2>0.999,confirming the accuracy of the instrument.The E/T value repeatability,in both short-term(3.16%RSD)and long-term(1.2%RSD)measurements,showed excellent stability.In addition,the instrument demonstrated good performance at neutron-logging speeds of 0.3∼3 m∕min(E/T values)and gamma logging speeds of 1∼10 m∕min.Through measurements in two ore sections of the PU model with uranium contents of 87.1 ppm and 45.6 ppm showed that RD remained below approximately 10%at logging speeds of 0–2 m/s in both cases,satisfying the requirements for engineering applications.This marks the first successful development of a neutron-logging instrument for uranium exploration based on a domestic neutron generator and signifies an important contribution to uranium resource exploration. 展开更多
关键词 Uranium exploration Neutron-logging instrument Pulsed neutron Neutron time spectrum detection
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Synergistic confinement and alloying effects in Pd-based catalysts for efficient and stable CO2reduction 认领 引用
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作者 Yujun Cheng Xi Li +6 位作者 Ziyi Gao Yao Yao Chuan Long Jiasi Zuo Haikun Xu Qi Liu Xiaoqing Chen 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第7期1-11,I0002,共11页
Palladium(Pd)has long been constrained as a potential catalyst for CO2reduction reactions(CO2RR)due to significant deactivation caused by strongly adsorbed carbonaceous intermediates on its surface,severely limi... Palladium(Pd)has long been constrained as a potential catalyst for CO2reduction reactions(CO2RR)due to significant deactivation caused by strongly adsorbed carbonaceous intermediates on its surface,severely limiting its catalytic activity and stability.To address this critical bottleneck,this study proposes and implements a synergistic regulation strategy combining alloying and spatial confinement effects.This approach designs a composite catalyst by encapsulating boron-silver co-doped palladium alloy nanoparticles(B-Ag4Pd6)within hollow porous resin carbon spheres(HPRCS).In an H-cell,this catalyst achieved a CO Faradaic efficiency of 96.19%at jCO=24.8 mA/cm2 and maintained stable performance for 80 h.Even under flow cell conditions,it sustained 91.23%CO selectivity at jCO=157.86 mA/cm2 over 60 h.Experimental comparisons confirmed the significant promoting effect of spatial confinement on CO2RR.Furthermore,in situ ATR-FTIR spectroscopy and density functional theory(DFT)calculations reveal that B/Ag alloying downshifts the Pd d-band center,optimizes(*)^COOH and(*)^CO adsorption,and the confined Hmicroenvironment accelerates CO formation while suppressing hydrogen evolution.This study not only successfully addressed the issue of carbon intermediate poisoning on Pd surfaces through alloying and microenvironmental regulation,but also provides novel insights and approaches for designing high-performance CO2RR catalysts that integrate electronic structure control with microenvironmental engineering. 展开更多
关键词 CO2electroreduction Pd‑based alloy catalysts Confinement effect Interfacial microenvironment engineering
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Hydro-chemical performance of copper mine waste-based capillary barriers for acid mine drainage control in humid climates 认领 引用
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作者 Longlong Meng Yixin Yang +9 位作者 Sheng Zhou Shunyu Wang Wenyuan Wang Rongjian Tan Linhan Wang Qiong Wang Xinyu Wu Aifang Du Qi Liu Bate Bate 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2026年第6期4600-4616,共17页
Capillary barriers offer a cost-effective and environmentally friendly method for acid mine drainage(AMD)control.Existing studies primarily focus on arid and semi-arid climates,whereas few address humid climates with ... Capillary barriers offer a cost-effective and environmentally friendly method for acid mine drainage(AMD)control.Existing studies primarily focus on arid and semi-arid climates,whereas few address humid climates with high precipitation,where AMD risks are more severe.This study evaluated the hydro-chemical performance of two anti-seepage-enhanced triple-layer capillary barriers constructed from copper mine wastes,using rainfall simulation,sensor monitoring,and water balance analysis in a model box.An extreme rainfall event(354 mm over 24 h)followed by a 30-d drying period was simulated sequentially.The top two layers of Model Boxes Ⅰ and Ⅱ withstood 60-and 10-year return period rainfalls,respectively,while the bottom layers delayed percolation by 39.4 h and 81.4 h,respectively,after lateral drainage in the coarse-grained layer(CGL).Despite a significant increase in equivalent permeability at CGL breakthrough(e.g.from 9.9×10⁻¹²m/s to 9.3×10⁻¹⁰m/s in Model Box Ⅰ),stable infiltration and low permeability limited percolation to less than 2.5%of rainfall in both barriers.Based on effective particle size and thickness,two empirical relationships were developed to describe the peak capacity and cumulative release rate of the fine-grained layer.Furthermore,the pH and heavy-metal ion concentrations in the lateral drainage remained within standards throughout the 2184.0 h monitoring period,explained by inhibition of the oxidation reaction.In addition,compared to the untreated waste dump,the predicted runoff removal rates achieved by the barriers were 73.4%and 64.8%for Model Boxes Ⅰ and Ⅱ,respectively. 展开更多
关键词 Capillary barrier Copper mine wastes Acid mine drainage Hydro-chemical performance
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Dynamic Mechanism and Active Suppression of Rotor Beat Frequency Vibration in a Magnetic Levitation Induction Machine 认领 引用
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作者 Jingxiong He Zhenzhong Su +3 位作者 Qi Liu Dingyang Liu Haoran Zhao Dong Wang 《CES Transactions on Electrical Machines and Systems》 EI CSCD 2026年第2期121-132,共12页
This study focuses on the phenomenon of rotor beat frequency vibration(BFV)in a 2-pole magnetic levitation induction machine(MLIM),systematically investigating its dynamic mechanisms and subsequently applying an estab... This study focuses on the phenomenon of rotor beat frequency vibration(BFV)in a 2-pole magnetic levitation induction machine(MLIM),systematically investigating its dynamic mechanisms and subsequently applying an established method for its suppression.First,the BFV synthesis process is described.Subsequently,three primary disturbance sources in the magnetic bearing(MB)system are identified and analyzed,including rotor unbalance,unbalanced magnetic pull(UMP)and magnetostrictive effect.Through numerical solution of a fourdegree-of-freedom(4-DOF)rotor dynamic model,the theoretical analysis reveals that MLIM-induced BFV consists of three spectral components:(i)rotor rotational frequency(RRF),(ii)electrical fundamental frequency(EFF),and(iii)the sum of EFF and slip frequency(EFF+SF).Building on these findings,we propose the adoption of a well-established notch filtering technique as an effective means to suppress the BFV.The experimental results confirm the correctness of the analysis of the BFV generation mechanism,and in particular of the EFF disturbance mechanism,and also demonstrate the effectiveness of the vibration suppression method. 展开更多
关键词 Active magnetic bearing(MB) 2-Pole magnetic levitation induction machine(MLIM) Beat frequency vibration(BFV) Magnetostriction Vibration suppression
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Do Blue Light and UV-A Interact Synergistically to Affect Growth and Quality of Celery?A Case Study of Individual vs.Combined Effects 认领 引用
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作者 Jinxiu Song Zhixin Li +6 位作者 Wenwen Di Qiaoshuo Hou Xiaoming Song Long Wang Qi Liu Zejin Zhang Zhengnan Yan 《Phyton-International Journal of Experimental Botany》 SCIE 2026年第7期420-433,共14页
Blue light and ultraviolet-A(UV-A)radiation are critical light-quality regulators that coordinately modulate plant growth and quality in protected horticulture.However,their interactive effects on celery(Apium graveol... Blue light and ultraviolet-A(UV-A)radiation are critical light-quality regulators that coordinately modulate plant growth and quality in protected horticulture.However,their interactive effects on celery(Apium graveolens L.)remain inadequately characterized.In the present study,we quantified the individual and combined impacts of supplemental UV-A and blue light on the growth,biomass accumulation,photosynthetic performance,and nutritional quality of celery(cv.Dayehuang)in a plant factory with artificial lighting.Our results demonstrated that sole UV-A or blue light application significantly increased biomass,nutritional quality,and light use efficiency(LUE)of celery.Notably,combined supplementation with UV-A and blue light did not enhance chlorophyll content,biomass accumulation,or nutritional quality in celery relative to supplementation with either light quality alone.The principal component analysis(PCA)score plot exhibited clear separation among the four light treatments,with the UV-A treatment distinctly separated along the positive PC1 axis.Our findings demonstrate that UV-A and blue light regulate plant growth and quality via interactive rather than additive effects.Additionally,sole UV-A irradiation significantly improved celery growth and LUE.These findings provide a theoretical foundation for optimizing the light environment for celery under protected cultivation. 展开更多
关键词 Blue light celery E-nose light use efficiency principal component analysis
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Ultrasonic imaging technology for non-destructive detection of lithium ion batteries 认领 引用
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作者 Ping Liu Rongrong Li +17 位作者 Xinqi Liang Guoxiang Pan Feng Cao Jiayuan Xiang Chen Wang Wangjun Wan Zhong Qiu Yongqi Zhang Ming Song Fangfang Tu Wei Wen Yuanyuan Jiang Yuhong Zhang Xinping He Yang Xia Wenkui Zhang Qi Liu Xinhui Xia 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第4期383-405,I0010,共23页
Ultrasonic imaging technology(UIT) has emerged as a pivotal non-destructive detection method for lithium ion batteries(LIBs),addressing critical challenges in ensuring battery safety and performance.This review compre... Ultrasonic imaging technology(UIT) has emerged as a pivotal non-destructive detection method for lithium ion batteries(LIBs),addressing critical challenges in ensuring battery safety and performance.This review comprehensively explores the working principles of UIT, including ultrasonic reflection,refraction,and attenuation,and its applications in LIB inspection.It systematically elaborates on the advancements and applications of UIT for high-resolution imaging of electrode microstructures,realtime monitoring of electrolyte wetting and dry-out,and precise detection of defects such as lithium plating,gas evolution,and electrode delamination.We also discuss the non-invasive assessment of state-ofcharge and state-of-health of LIBs by correlating acoustic properties with structural changes during battery cycling.Comparative analyses highlight the superiority of UIT over traditional destructive methods and complementary technologies.Furthermore,this review rigorously examines the current challenges and future development prospects of UIT.Despite challenges in resolving nanoscale defects and adapting to complex battery architectures,UIT shows promise when integrated with AI-driven data analysis and advanced transducers.Finally,we also envision emerging applications of UIT in the broader renewable energy sector,aiming to provide scientific insights for optimizing manufacturing,lifecycle management,and safety assurance of the battery industry. 展开更多
关键词 Ultrasonic imaging technology Lithium ion batteries Non-destructive detection
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Multi-degree-of-freedom multiport beam splitting on nonlocal metasurfaces:preparation of four-mode high-NOON states 认领 引用
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作者 Yu Tian Qi Liu +3 位作者 Zhaohua Tian Shuyun Su Qihuang Gong Ying Gu 《Advanced Photonics Nexus》 CSCD 2026年第3期128-138,共11页
Local gradient metasurfaces have realized multiple beam splitting(BS)functions,enabling various applications in on-chip quantum information.However,nonlocal metasurface BS with the utilization of wavelength and moment... Local gradient metasurfaces have realized multiple beam splitting(BS)functions,enabling various applications in on-chip quantum information.However,nonlocal metasurface BS with the utilization of wavelength and momentum selectivity remains unexplored.Here,we demonstrate the framework of a multidegree-of-freedom multiport BS on a single nonlocal phase gradient metasurface.The BS,constructed by its momentum-polarization mode subspaces,is co-modulated by wavelengths,polarization,and angles of incident light.With the unique capability of multimode interference,this multiport BS can facilitate quantum state engineering,especially multimode high-dimensional quantum entanglement.Then,four-mode highphoton NOON states,manifested as polarization-path-locked properties,are prepared with high success probability and fidelity.For example,four-photon and eight-photon NOON states are obtained with success probabilities of 33.7%and 12.5%,respectively.The efficient generation of multimode high-photon NOON states on a single metasurface improves the precision of on-chip quantum measurement and significantly enhances the integration of quantum information platforms. 展开更多
关键词 nonlocal metasurfaces multiport beam splitting multi-degrees of freedom multimode NOON states
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