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Interfacial electron rearrangement of 3D Fe_(3)O_(4)/h-YFeO_(3)composites for efficient electromagnetic wave absorption

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International Journal of Minerals,Metallurgy and Materials 2025年第3期32卷 609-618页

作者： Yi Sui Yingde Zhang Guang Liu lei Ji Junyu Yue chen Wu Mi Yan School of Materials Science and Engineering Zhejiang UniversityHangzhou 310027China State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization Baotou Research Institute of Rare EarthsBaotou 014030China Key Laboratory of Rare Earths Chinese Academy of SciencesGanzhou 341119China Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering Taiyuan 030032China

Interface modulation is an important pathway for highly efficient electromagnetic wave ***,tailored interfaces between Fe_(3)O_(4)particles and the hexagonal-YFeO_(3)(h-YFeO_(3))framework were constructed via facile *** resulting interfa-cial electron rearrangement at the heterojunction led to enhanced dielectric and magnetic loss *** results and density function theory(DFT)simulations demonstrate a transition in electrical properties from a half-metallic monophase to metallic Fe_(3)O_(4)/h-YFeO_(3)composites,emphasizing the advantages of the formed *** transformation of electron behavior is also accompan-ied by a redistribution of electrons at the Fe_(3)O_(4)/h-YFeO_(3)heterojunction,leading to the accumulation of localized electrons around the Y-O-Fe band bridge,consequently enhancing the polarization.A minimum reflection loss of-34.0 dB can be achieved at 12.0 GHz and 2.0 mm thickness with an effective bandwidth of 3.3 GHz due to the abundant interfaces,enhanced polarization,and rational ***,the synergistic effects endow the Fe_(3)O_(4)/h-YFeO_(3)composites with high performance and tunable functional properties for efficient electromagnetic absorption.

关键词： self-assembling heterojunction electron rearrangement interface modulation electromagnetic wave absorption

Impact of residual antibiotics on microbial decomposition of livestock manures in Eutric Regosol:Implications for sustainable nutrient recycling and soil carbon sequestration

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Journal of Environmental Sciences 2025年第1期147卷 498-511页

作者： Linfa Fang Prakash Lakshmanan xiaoxuan Su Yujia Shi Zheng chen Yu Zhang Wei Sun Junxi Wu Ran xiao Xinping chen Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin College of Resources and EnvironmentSouthwest UniversityChongqing 400715China Key Laboratory of Sugarcane Biotechnology and Genetic Improvement(Guangxi) Ministry of Agriculture and Rural AffairsGuangxi Key Laboratory of Sugarcane Genetic ImprovementSugarcane Research InstituteGuangxi Academy of Agricultural SciencesNanning 530007China Queensland Alliance for Agriculture and Food Innovation University of QueenslandSt Lucia 4067QLDAustralia Key Laboratory of Ecosystem Network Observation and Modeling Institute of Geographic Sciences and National Resources ResearchChinese Academy of SciencesBeijing 100101China

The land application of livestock manure has been widely acknowledged as a beneficial approach for nutrient recycling and environmental ***,the impact of residual antibiotics,a common contaminant of manure,on the degradation of organic compounds and nutrient release in Eutric Regosol is not well ***,we studied,how oxytetracycline(OTC)and ciprofloxacin(CIP)affect the decomposition,microbial community structure,extracellular enzyme activities and nutrient release from cattle and pig manure using litterbag incubation *** showed that OTC and CIP greatly inhibited livestock manure decomposition,causing a decreased rate of carbon(28%-87%),nitrogen(15%-44%)and phosphorus(26%-43%)*** relative abundance of gramnegative(G-)bacteria was reduced by 4.0%-13%while fungi increased by 7.0%-71%during a 28-day incubation ***-occurrence network analysis showed that antibiotic exposure disrupted microbial interactions,particularly among G-bacteria,G+bacteria,and *** changes in microbial community structure and function resulted in decreased activity of urease,β-1,4-N-acetyl-glucosaminidase,alkaline protease,chitinase,and catalase,causing reduced decomposition and nutrient release in cattle and pig *** findings advance our understanding of decomposition and nutrient recycling from manure-contaminated antibiotics,which will help facilitate sustainable agricultural production and soil carbon sequestration.

关键词： Residual antibiotics Livestock manure decomposition Microbial community Co-occurrence network Enzyme activities

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改良扩大前颅底入路的解剖及临床应用

中国临床解剖学杂志 2011年第4期29卷 367-370页

作者：陈晓雷刘宁南京医科大学附属无锡市第二人民医院脑科中心江苏无锡214000 第一附属医院神经外科江苏南京210029

目的探讨改良扩大前颅底入路的显微解剖和临床应用效果。方法选用福尔马林固定的成人尸头标本15例,颅骨标本20例进行解剖学观察,并对13例应用该入路切除的颅底中线区肿瘤进行临床分析。结果与标准前颅底入路相比改良扩大前颅底入路的暴... 详细信息

目的探讨改良扩大前颅底入路的显微解剖和临床应用效果。方法选用福尔马林固定的成人尸头标本15例,颅骨标本20例进行解剖学观察,并对13例应用该入路切除的颅底中线区肿瘤进行临床分析。结果与标准前颅底入路相比改良扩大前颅底入路的暴露范围明显扩大。通过将鼻骨与眶板一起截除,可保留足够长度的鼻中隔粘膜。术式的暴露范围主要受限于双侧的视神经、颈内动脉、翼管、舌下神经管等结构。本组13例中,9例全切除;1例近全切除;3例大部切除。术后发生并发症5例。无手术死亡。结论改良扩大前颅底入路具有暴露充分、脑损伤小、可有效保护嗅觉等优点。该入路是切除颅底中线部位侵犯眶、鼻、筛、蝶和斜坡肿瘤的较佳入路。

关键词：前颅底脑肿瘤嗅觉解剖显微外科手术

High-dense nanocrystalline W-based alloy prepared by hot isostatic pressing with uniform microstructure, ultrahigh hardness and good thermal stability

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Tungsten 2025年第1期7卷 120-136页

作者： Zao-Ming Wu Lin He Lin-Sen Ye xiao-Feng Yang Jia-Jia Zhang Hong-Bo lei Institute of Materials China Academy of Engineering Physics

High-density uniform microstructure nanocrystalline W-10wt.% Cr-5wt.% Y（W-10Cr-5Y） alloy with an average grain size of 85 nm and a relative density of 99.8% was successfully prepared.W-Cr-Y alloys with different amounts of second-phase particles were prepared by high-energy ball milling and hot isostatic pressing *** effects of composition design,ball milling parameters,and sintering parameters on the microstructure of W-Cr-Y alloys were studied.A feasible technology for controlling the synthesis of high-density nanocrystalline W-based alloys has been *** microstructure analysis of nanocrystalline W-10Cr-5Y alloy shows that there are two types of doping in the second phase:intergranular doping and intragranular *** "uniform distribution YOx-rich particles" effectively suppresses the grain growth of W and leads to the formation of nanocrystalline W-10Cr-5Y alloy.W-10Cr-5Y has an ultra-high hardness,with a Vickers hardness of 1312±12 kgf·***-temperature annealing treatment shows that W-10Cr-5Y has good thermal stability at 1000 and1100℃,as demonstrated by the comparison of Vickers hardness and grain size between annealed and unannealed alloys.

关键词： Hot isostatic pressing Microstructure Nanocrystalline tungsten Thermal stability Vickers hardness

Metamorphic P-T-t Evolution of Granulite in the Yishui Area:New Insights into the Tectonic Evolution of the Eastern Block,North China Craton

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Acta Geologica Sinica(English Edition) 2025年第1期99卷 69-82页

作者： chen Ziyuan YUAN Mingkao ZHONG Zhenyu LI Tianqi WANG Guodong xiao Lingling School of Civil and Resource Engineering University of Science and Technology BeijingBeijing 100083China Shandong Provincial Key Laboratory of Water and Soil Conservation and Environmental Protection/School of Resources and Environment Linyi UniversityLinyiShandong 276000China Shandong Institute of Geophysical and Geochemical Exploration Jinan 250013China Institute of Digital Geology and Energy Linyi UniversityLinyiShandong 276000China

The Yishui complex,located in the western Shandong area of the North China Craton,is representative of the Archean crystalline basement of the North China Craton to explore the early tectonic-thermal evolution history of the *** petrography,mineral chemistry,metamorphic evolution and zircon U-Pb dating are presented for felsic granulite and two-pyroxene granulite from the Yishui complex to contribute to new insights into the Neoarchean tectonic evolution of the North China *** mineral assemblages are recognized for these granulite samples,including the prograde(M1),peak(M2)and retrograde(M3)mineral *** geothermobarometry and phase equilibrium modeling yield P-T conditions of 6.5-10.9 kbar/718-839℃ for the peak metamorphism,which define a medium-pressure granulite-facies metamorphism occurred at middle to lower *** P-T paths with near-isobaric cooling(IBC)retrograde segments were *** LA-ICP-MS U-Pb dating suggests that the protolith of the felsic granulite was emplaced at 2541±7 Ma and the subsequent medium-pressure granulite-facies metamorphism occurred at 2518-2494 Ma.A two-stage mantle plume related crustal-scale sagduction geodynamic regime is proposed in the western Shandong terrane in the Neoarchean.

关键词： metamorphic evolution geochronology granulite Yishui complex North China Craton

A novel supramolecular assembly based on nor-seco-cucurbit[10]uril for spermine sensing and artificial light-harvesting

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Chinese Chemical Letters 2025年第1期36卷 262-266页

作者： Ran Cen Yan-Yan Tang Li-Xia chen Zhu Tao Xin xiao National Key Laboratory of Green Pesticide State Key Laboratory of Green Pesticide and Agricultural BioengineeringMinistry of EducationKey Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou ProvinceGuizhou UniversityGuiyang 550025China

A supramolecular assembly composed of perylene diimide derivative(PDI-nm)and nor-secocucurbit[10]uril(ns-Q[10])was *** excellent host-guest interaction between PDI-nm and nsQ[10]prevented the aggregation-caused quenching(ACQ)effect of PDI-nm,resulting in a luminescent *** addition of spermine to the PDI-nm/ns-Q[10]assembly restored the ACQ of PDI-nm due to the competitive binding of spermine to ns-Q[10],which released *** assembly based on this principle showed ultra-high sensitivity for the detection of spermine with a detection limit as low as7.84×10^(-7)mol/L in aqueous solution and 3.69×10^(-7)mol/L in plasma ***,an artificial light-harvesting system based on this assembly was proposed,benefiting from its good luminescent *** red(Ni R)functioned as an acceptor loaded into assembly,and a highly efficient energy transfer process occurred from PDI-nm/ns-Q[10]to Ni R,with an efficiency up to 87%.

关键词： Nor-seco-cucurbituril Perylene diimide derivative Spermine Light-harvesting

Dual roles ofα1,4-galactosyltransferase 1 in spermatogenesis of Drosophila melanogaster

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Insect Science 2025年第1期32卷 127-139页

作者： Yanhong xiao Bo Huang Sibo chen Zhikai Lin Zhiying Zhu Yuzhen Lu xiao-Qiang Yu Liang Wen Qihao Hu Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology Guangzhou Key Laboratory of Insect Development Regulation and Application ResearchInstitute of Insect Science and TechnologySchool of Life SciencesSouth China Normal UniversityGuangzhouChina School of Life Sciences Hubei Key Laboratory of Genetic Regulation and Integrative BiologyCentral China Normal UniversityWuhanChina

Spermatogenesis is critical for insect reproduction and the process is regulated by multiple *** have been shown to participate in the development of Drosophila melanogaster;however,their role in spermatogenesis is still *** this study,we found thatα1,4-galactosyltransferase 1(α4GT1)was expressed at a significantly higher level in the testis than in the ovary of ***,the hatching rate was significantly decreased whenα4GT1 RNA interference(RNAi)males were crossed with w1118 females,with only a few mature sperm being present in the seminal vesicle ofα4GT1 RNAi *** staining further revealed that the individualization complex(IC)in the testes fromα4GT1 RNAi flies was scattered and did not move synchronically,compared with the clustered IC observed in the control *** deoxyribonucleotide transferase(TdT)-mediated dUTP nick end labeling(TUNEL)assay showed that apoptosis signals in the sperm bundles ofα4GT1 RNAi flies were significantly ***,the expression of several individualization-related genes,such as Shrub,Obp44a and Hanabi,was significantly decreased,whereas the expression of several apoptosis-related genes,including Dronc and Drice,was significantly increased in the testes ofα4GT1 RNAi ***,these results suggest thatα4GT1 may play dual roles in Drosophila spermatogenesis by regulating the sperm individualization process and maintaining the survival of sperm bundles.

关键词： apoptosis α4GT1 galactosyltransferase individualization spermatogenesis

Design Considerations on Voltage and Current Transfer Ratio of High-Frequency Transformers

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CSEE Journal of Power and Energy Systems 2025年第1期11卷 447-457页

作者： chen Liu lei Qi Xiang Cui China Electric Power Planning&Engineering Institute Beijing100120China State Key Laboratory for Alternate Electrical Power System Renewable Energy Sources(North China Electric Power University)Beijing102206China

A high frequency(HF)transformer is key equipment for dc-dc converter to achieve galvanic isolation and voltage *** operating frequency increases,voltage and current transfer ratio of HF transformer may significantly deviate from the turn ratio due to parasitic effects,failing to transfer expected voltage and current from the primary side to the secondary *** this paper,design considerations on voltage and current transfer ratio of the HF transformer are investigated to obtain expected transfer *** revealing parasitic effects on transfer characteristic(TC)of the HF transformer with load,deviation between voltage/current transfer ratio and turn ratio is correlated with the ratio of voltage/current TC resonant frequency and operating ***,constraints for parasitic parameters to obtain expected transfer ratio are proposed,and practical measures to achieve improvements in transformer design are discussed.A 20kHz HF transformer prototype is used as an application,by which evaluations on deviation of voltage/current transfer ratio and turn ratio are verified,and voltage/current transfer performance of the prototype are effectively improved by optimal design based on the proposed principles.

关键词： Capacitance transfer functions transformers

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精准神经外科：微侵袭神经外科新理念

中华外科杂志 2011年第8期49卷 676-678页

作者：许百男陈晓雷解放军总医院神经外科北京100853

早在1917年，现代神经外科的奠基人，Harvey Cushing教授就提出“神经外科手术操作必须精细准确，手法细腻，要尽力保护脑组织”等概念，这可以认为是最早期的精准神经外科理念。然而，在相当长的时期内，由于诊疗技术和手段的落后，神... 详细信息

早在1917年，现代神经外科的奠基人，Harvey Cushing教授就提出“神经外科手术操作必须精细准确，手法细腻，要尽力保护脑组织”等概念，这可以认为是最早期的精准神经外科理念。然而，在相当长的时期内，由于诊疗技术和手段的落后，神经外科的发展还很难达到“精准”的要求。20世纪60年代以后，得益于科技的进步和高科技手段在临床的广泛应用，现代神经外科有了大的飞跃。

关键词：微侵袭神经外科 Cushing 手术操作诊疗技术高科技奠基人脑组织