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纤维素物料分析法的比较研究

厦门大学学报(自然科学版) 1956年第3期 8-13页

作者：吴思敏郑元维吴淑英

植物原料中,纤维素物料显属重要部分,随着祖国经济建设飞跃的进展,纤维素物料,无论是来自深山密林,或来自农村的副产废料,将要以各种最有利方式,大量投入生产。纤维素物料分析的项目甚多,本实验祇就其中最基本者,如总纤维素,α-纤维素,... 详细信息

植物原料中,纤维素物料显属重要部分,随着祖国经济建设飞跃的进展,纤维素物料,无论是来自深山密林,或来自农村的副产废料,将要以各种最有利方式,大量投入生产。纤维素物料分析的项目甚多,本实验祇就其中最基本者,如总纤维素,α-纤维素,木素等现行的定量法,就其有关因素的影响,进行概括的验证,以便对分析操作上的有利条件,作比较深入的探讨。所谓有利条件,尤其指着能使分析方法更简捷,准确,而又安全。

关键词：木素定量法物料分析法氯水木粉废材

Control of Corner Separation for a Linear Compressor Cascade via Bionic Slanting Riblets at the Endw.ll

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Journal of Thermal Science 2025年第1期34卷 129-144页

作者： ZHANG Peng LI y.nghong cheng Rixin Key.Laboratory.of Civil Aircraft Airw.rthiness Technology Civil Aviation University of China College of Aeronautical Engineering Civil Aviation University of China

A new.passive control approach,utilizing bionic slanting riblets,is employ.d to mitigate the flow.close to the blade endw.ll in a linear cascade,and its effectiveness and mechanism in controlling corner separation are investigated through numerical *** slanting riblets are positioned at the endw.ll upstream of the cascade channel,and the influence of riblet height,y.w.angle and relative position on the control of corner separation is *** findings indicate that the application of slanting riblets can efficiently.counteract corner separation across the stable operational ***,the introduction of riblets w.th a height of merely.0.1 times the boundary.lay.r thickness results in a significant reduction in total pressure loss by.up to 14.53%,w.ile simultaneously.enhancing the static pressure coefficient by.21.74%.Flow.analy.is reveals that minute vortices produced w.thin the riblet channels tend to coalesce,forming a potent large-scale vortex near the boundary.lay.r's base *** phenomenon results in reduced additional losses compared to conventional vortex ***,the induced vortex promotes enhanced mixing betw.en the mainstream flow.and boundary.lay.r,inhibiting the lateral displacement of low.energy.fluids w.thin the endw.ll boundary.***,this delay. the onset of separation vortex formation and eliminates vortex rings in the corner region,ultimately.enhancing the aerody.amic efficiency.of the cascade.

关键词： additional losses compressor cascade corner separation slanting riblets vortex generator

Three-dimensional fracture of UO2 ceramic pellets by.phase field modeling

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Science China(Phy.ics,Mechanics & Astronomy. 2025年第1期Mechanics & Astronomy) .卷 169-180页

作者： w.i Xiong Xuan y. Hongzhang cheng Xiaoming Liu Institute of Nuclear and New.Energy.Technology Collaborative Innovation Center of Advanced Nuclear Energy Technology Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education Tsinghua University State Key.Laboratory.of Nonlinear Mechanics Institute of Mechanics Chinese Academy of Sciences School of Engineering Science University of Chinese Academy of Sciences

Fracture is the primary.failure ty.e for the UO2ceramic pellets,w.ich are operated under irradiation and thermal processes,and phy.ically.confined by.the *** this w.rk,by.combining closely.coupled phy.ical processes of heat conduction,heat transfer,and mechanical deformation w.th the cohesive phase field framew.rk,w. proposed a high-precision modeling of quasistatic cracking of three-dimensional （3D） UO2ceramic fuel pellets under high temperature and *** simulation results agree w.ll w.th the experimental results,indicating that the proposed method has the potential to capture 3D crack modes in the interested time ***,w. studied the relation of the 3D fracture patterns of fuel pellets w.th the peak pow.r *** w.s found that the pow.r level play. a critical role in determining the competition betw.en radial and circumferential cracks,as w.ll as transverse penetrating cracks.

关键词： phase field method nuclear fuel pellet coupled thermo-mechanical model thermal fracture

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超载对应力集中区裂纹疲劳扩展的影响

华东化工学院学报 1985年第4期 509-514页

作者：李培宁郑以文华东化工学院机械工程系美国国家标准局断裂变形部

用具有对称裂纹的中心圆孔宽板试件,研究了超载对结构应力集中产生的塑性变形区中的裂纹疲劳扩展速率的影响。发现在塑性区中裂纹超载迟滞效应和在弹性区中裂纹的超载迟滞效应相似。在裂纹萌生前施加超载于结构元件,对以后应变集中区裂... 详细信息

用具有对称裂纹的中心圆孔宽板试件,研究了超载对结构应力集中产生的塑性变形区中的裂纹疲劳扩展速率的影响。发现在塑性区中裂纹超载迟滞效应和在弹性区中裂纹的超载迟滞效应相似。在裂纹萌生前施加超载于结构元件,对以后应变集中区裂纹的萌生及疲劳扩展均有显著的迟滞作用。因此预超载技术可以用于延长有应力集中结构元件的疲劳寿命,例如带接管的焊接压力容器。

关键词：裂纹疲劳扩展裂纹扩展速率裂纹高倍缺陷(金属) 塑性区塑性域疲劳扩展速率弹性场应力集中区裂纹长度试件应力强度因子幅

Unraveling the impacts of intermolecular interaction on morphology.evolution for highly.efficient organic solar cells and modules

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Science China Chemistry 2025年第1期68卷 264-272页

作者： Xueqing Ma y.ngy.ng cheng y.qiang Liu Xinming Zheng Guangliu Ran Hongxiang Li Xiny.e Cui Andong Zhang w.nkai Zhang Pei cheng w.nchao Huang Zhishan Bo Beijing Key.Laboratory.of Energy.Conversion and Storage Materials College of Chemistry Beijing Normal University College of Textiles and Clothing State Key Laboratory of Bio-fibers and Eco-textiles Qingdao University Key.State Laboratory.of Advanced Technology.for Materials Sy.thesis and Processing School of Materials Science and EngineeringWuhan University of Technology Department of Phy.ics and Applied Optics Beijing Area Major Laboratory Center for Advanced Quantum Studies Beijing Normal University State Key.Laboratory.of Poly.er Materials Engineering College of Polymer Science and Engineering Sichuan University

Understanding the effect of intermolecular interaction on the grow.h dy.amic of active lay.rs is critical for advancing organic solar cells(OSCs). How.ver, the diverse structure of donors and acceptors makes the research challenging. Additives w.th customizable structures and properties could simplify.this complexity. Herein, w. meticulously.tailor tw. additives of 3,4-ethy.enedioxy.hiophene(EDOT) and 2,5-dibromo-3,4-ethy.enedioxy.hiophene(DBEDOT), possessing distinct intermolecular interaction features to elaborate the inherent relationship. It is found that varied interaction strengths can alter film formation processes. The enhanced intermolecular interaction betw.en the DBEDOT and non-fullerene acceptor BTP-e C9-4F results in pre-aggregation and longer cry.tallization duration of BTP-e C9-4F, facilitating the formation of films w.th compact molecular packing and decent phase separation. Thus, exciton dissociation and charge transport become more efficient. Finally. devices processed w.th DBEDOT exhibit a remarkable pow.r conversion efficiency.of 19.35% in small-area OSCs and 14.11% in bladecoated 5 cm × 5 cm organic solar mini-modules. Especially. OSCs can maintain 80% of their initial efficiency.after continuous annealing at 85 °C for over 2,100 h.

关键词： organic solar cell non-fullerene acceptor film grow.h molecular packing intermolecular interaction

Tailoring Light–Matter Interactions in Overcoupled Resonator for Biomolecule Recognition and Detection

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Nano-Micro Letters 2025年第1期17卷 262-280页

作者： Dongxiao Li Hong Zhou Zhihao Ren cheng Xu chengkuo Lee Department of Electrical and Computer Engineering National University of SingaporeSingapore 117583Singapore Center for Intelligent Sensors and MEMS(CISM) National University of SingaporeSingapore 117608Singapore

Plasmonic nanoantennas provide unique opportunities for precise control of light–matter coupling in surface-enhanced infrared absorption(SEIRA)spectroscopy.but most of the resonant sy.tems realized so far suffer from the obstacles of low.sensitivity.narrow.bandw.dth,and asy.metric Fano resonance ***,w. demonstrated an overcoupled resonator w.th a high plasmon-molecule coupling coefficient(μ)(OC-Hμresonator)by.precisely.controlling the radiation loss channel,the resonator-oscillator coupling channel,and the frequency.detuning *** observed a strong dependence of the sensing performance on the coupling state,and demonstrated that OC-Hμresonator has excellent sensing properties of ultra-sensitive(7.25%nm^(−1)),ultra-broadband(3–10μm),and immune asy.metric Fano *** characteristics represent a breakthrough in SEIRA technology.and lay.the foundation for specific recognition of biomolecules,trace detection,and protein secondary.structure analy.is using a single array.array.size is 100×100μm^(2)).In addition,w.th the assistance of machine learning,mixture classification,concentration prediction and spectral reconstruction w.re achieved w.th the highest accuracy.of 100%.Finally.w. demonstrated the potential of OC-Hμresonator for SARS-CoV-2 *** findings w.ll promote the w.der application of SEIRA technology.w.ile providing new.ideas for other enhanced spectroscopy.technologies,quantum photonics and study.ng light–matter interactions.

关键词： Plasmonic nanoantennas Light-matter interaction Surface-enhanced infrared absorption Overcoupled Biosensing

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A Multi-Objective Particle Sw.rm Optimization Algorithm Based on Decomposition and Multi-Selection Strategy

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Computers, Materials & Continua 2025年第1期82卷 997-1026页

作者： Li Ma Cai Dai Xingsi Xue cheng Peng School of Computer Science Shaanxi Normal UniversityXi’an710119China Fujian Provincial Key.Laboratory.of Big Data Mining and Applications Fujian University of TechnologyFuzhou350118China Information Construction and Management Center and Institute of Artificial Intelligence and Educational New.Productivity Ningxia Normal UniversityGuyuan756099China

The multi-objective particle sw.rm optimization algorithm(MOPSO)is w.dely.used to solve multi-objective optimization *** the article,amulti-objective particle sw.rm optimization algorithmbased on decomposition and multi-selection strategy.is proposed to improve the search ***,tw. update strategies based on decomposition are used to update the evolving population and external archive,***,a multiselection strategy.is *** first strategy.is for the subspace w.thout a non-dominated *** the neighbor particles,the particle w.th the smallest penalty.based boundary.intersection value is selected as the global optimal solution and the particle far aw.y.fromthe search particle and the global optimal solution is selected as the personal optimal solution to enhance global *** second strategy.is for the subspace w.th a non-dominated *** the neighbor particles,tw. particles are randomly.selected,one as the global optimal solution and the other as the personal optimal solution,to enhance local *** third strategy.is for Pareto optimal front(PF)discontinuity.w.ich is identified by.the cumulative number of iterations of the subspace w.thout non-dominated *** the subsequent iteration,a new.probability.distribution is used to select from the remaining subspaces to ***,an adaptive inertia w.ight update strategy.based on the dominated degree is designed to further improve the search ***,the proposed algorithmis compared w.th fivemulti-objective particle sw.rm optimization algorithms and five multi-objective evolutionary.algorithms on 22 test *** results show.that the proposed algorithm has better performance.

关键词： Multi-objective optimization multi-objective particle sw.rm optimization decomposition multi-selection strategy

lncRNA SNHG4 enhanced gastric cancer progression by.modulating miR-409-3p/CREB1 axis

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Oncology.Research 2025年第1期33卷 185-198页

作者： ZHOUy.NG cheng y.CHEN HUA y.NG CAO JUN QIN Department of General Surgery Affiliated Hospital of Nantong UniversityNantong226001China Department of Surgery Affiliated Hospital of Nantong UniversityMedical School of Nantong UniversityNantong226001China Department of Operation Affiliated Hospital of Nantong UniversityNantong226001China

Objective:Gastric cancer(GC)is a globally.common cancer characterized by.high incidence and mortality.*** in the molecular understanding of GC provide promising targets for GC diagnosis and *** non-coding RNAs(lncRNAs)and their dow.stream regulators are regarded to be implicated in the progression of multiple ty.es of *** have show. that the lncRNA small nucleolar RNA host gene 4(SNHG4)serves as a tumor promoter in various malignancies,w.ile its function in GC has y.t to be ***,our study.aimed to explore the role and underly.ng mechanism of SNHG4 in ***:w. used qRT-PCR to analy.e SNHG4 expression in GC tissues and ***-Meier analy.is w.s used to assess the correlation betw.en SNHG4 expression and the survival rate of GC *** function experiments such as CCK-8,BrdU,colony.formation,flow.cy.ometry.analy.is,and transw.ll w.re performed to explore the effects of SNHG4 on GC cell proliferation,apoptosis,cell cy.le,migration,and *** also established xenograft mouse models to explore the effect of SNHG4 on GC tumor ***,dual luciferase reporter assay.w.s used to verify.the interaction betw.en SNHG4 and miR-409-3p and betw.en miR-409-3p and cAMP responsive element binding protein 1(CREB1).Results:The results indicated that SNHG4 w.s overexpressed in GC tissues and cell lines,and w.s linked w.th poor survival rate of GC ***4 promoted GC cell proliferation,migration,and invasion w.ile inhibiting cell apoptosis and cell cy.le arrest in *** in vivo experiment indicated that SNHG4 facilitated GC tumor ***,SNHG4 w.s demonstrated to bind to ***,CREB1 w.s directly.targeted by.*** assay. demonstrated that miR-409-3p deficiency.reversed the suppressive impact of SNHG4 knockdow. on GC cell ***,miR-409-3p w.s also revealed to inhibit GC cell proliferation,migration,and invasion by.targeting CREB1

关键词： Gastric cancer Small nucleolar RNA host gene 4(SNHG4) MicroRNA-409-3p(miR-409-3p) cAMP responsive element binding protein 1(CREB1)

Resistance of Cement-based Grouting Materials w.th Nano- SiO_(2) Emulsion to Chloride Ion Penetration

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Journal of w.han University.of Technology.Materials Science) 2025年第1期40卷 114-119页

作者： LI Shuiping cheng Jian w.I Chao y.AN Bin y. chengxiao College of Architectural Science and Engineering Yangzhou UniversityYangzhou 225127China

The chloride penetration resistance of cement-based grout materials w.s improved by.nano-silica *** of mixtures containing different nano-silica particles or emulsions w.re exposed in sodium chloride solutions of specific concentrations w.th different test *** properties of the mixes w.re assessed in terms of w.ight loss and compressive strength.X-ray.diffraction(XRD)and scanning electron microscopy.SEM)of mixes w.re performed to analy.is the phase evolution and *** results demonstrated that the introduction of nano-SiO_(2) emulsion significantly.decreased the compressive strength loss and calcium hy.roxide(CH)cry.tal content of hy.ration production,and then enhanced the resistance of cement-based grouting materials to chloride ion *** improvement derives from the filling and pozzolanic effects of nano-SiO_(2) particles,w.ich w.re incorporated via an emulsion and attributed to a w.ll dispersion in grouting matrix.

关键词： grouting materials nano-SiO_(2)emulsion chloride ion penetration,w.ight loss strength loss

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