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Normal faulting and its role in the drainage divide migration in the Karιncalιdag region,Menderes Massif,Western Türkiye

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Journal of Mountain Science 2025年第1期22卷 312-323页

作者： TOPAL Savaş IRFAN Mohammad Pamukkale University Department of Geological EngineeringKınıklıCampusDenizli 20160Türkiye University of Kashmir Department of Earth SciencesSrinagar 190006India

Drainage divide migration refers to the shifting boundaries between adjacent drainage basins over time,driven by processes such as tectonic uplift,differential erosion,stream capture,and lithological *** phenomenon has a significant impact on water flow patterns and basin extents,serving as an indicator of the landscape's response to active tectonic *** of the key drivers of divide migration is asymmetric uplift,which causes divides to shift from areas of lower uplift to regions experiencing higher *** divides are inherently dynamic,evolving over time as drainage networks develop and adjust to changing *** study focuses on the migration of the main drainage divide along Karιncalιda?,located between Bozdo?an and *** employs geomorphic analyses using metrics such as the normalized steepness index(ksn),Chi(χ),and Gilbert *** main divide is categorized into four segments(D1–D4),with the Karacasu Fault,situated along the mountain's north-eastern boundary,identified as the primary factor influencing divide *** factors include the relatively low elevation of Karιncalιda?,uniform lithology,and consistent rainfall patterns across the *** results indicate that the main divide is currently stable,suggesting a balance between uplift and ***,higherχvalues in the D4 segment suggest that future erosion may dominate,potentially causing the divide to migrate toward the Bozdo?an *** findings highlight the dynamic nature of drainage divides and the complex interplay of tectonic,erosional,and lithological processes that shape their *** monitoring and advanced geomorphic analysis are essential for understanding the long-term stability of the divide and its response to future tectonic activity and erosional modifications.

关键词： Drainage divide migration Gilbert metrics Karıncalıdağ Karacasu Fault

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FRAME: femtosecond videography for atomic and molecular dynamics

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Light(Science & Applications) 2017年第1期6卷 548-554页

作者： Andreas Ehn Joakim Bood Zheming Li Edouard Berrocal Marcus Aldén Elias Kristensson Division of combustion Physics Department of PhysicsLund UniversityLund SE-22363Sweden

Many important scientific questions in physics,chemistry and biology require effective methodologies to spectroscopically probe ultrafast intra-and inter-atomic/molecular ***,current methods that extend into the femtosecond regime are capable of only point measurements or single-snapshot visualizations and thus lack the capability to perform ultrafast spectroscopic videography of dynamic single *** we present a laser-probe-based method that enables two-dimensional videography at ultrafast timescales(femtosecond and shorter)of single,non-repetitive *** method is based on superimposing a structural code onto the illumination to encrypt a single event,which is then deciphered in a post-processing *** coding strategy enables laser probing with arbitrary wavelengths/bandwidths to collect signals with indiscriminate spectral information,thus allowing for ultrafast videography with full spectroscopic *** demonstrate the high temporal resolution of our method,we present videography of light propagation with record high 200 femtosecond temporal *** method is widely applicable for studying a multitude of dynamical processes in physics,chemistry and biology over a wide range of time *** the minimum frame separation(temporal resolution)is dictated by only the laser pulse duration,attosecondlaser technology may further increase video rates by several orders of magnitude.

关键词： imaging techniques ultrafast photonics ultrafast spectroscopy videography

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Experimental investigation for temperature and emissivity by flame emission spectrum in a cavity of rocket based combined cycle combustor chamber

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Defence Technology（防务技术） 2024年第9期39卷 114-122页

作者： Weiguang Cai Shu Zheng Yan Wang Bing Liu Shaohua Zhu Li Zhao Qiang Lu National Engineering Research Center of New Energy Power Generation North China Electric Power UniversityBeijing 102206China Science and Technology on combustion Internal Flow and Thermal-structure LaboratoryNorthwestern Polytechnical UniversityXi'an 710072China

Flame temperature and spectral emissivity were the important parameters characterizing the sufficient degree of fuel combustion and the particle radiative characteristics in the Rocket Based Combined Cycle(RBCC)*** investigate the combustion characteristics of the complex supersonic flame in the RBCC combustor,a new radiation thermometry combined with Levenberg-Marquardt(LM)algorithm and the least squares method was proposed to measure the temperature,emissivity and spectral radiative properties based on the flame emission ***-situ measurements of the flame temperature,emissivity and spectral radiative properties were carried out in the RBCC direct-connected test bench with laser-induced plasma combustion enhancement(LIPCE)and without *** flame average temperatures at fuel global equivalence ratio(a)of 1.0b and 0.6 with LIPCE were 4.51%and 2.08%higher than those without *** flame combustion oscillation of kerosene tended to be stable in the recirculation zone of cavity with the thermal and chemical effects of laser induced *** differences of flame temperature at a=1.0b and 0.6 were 503 K and 523 K with LIPCE,which were 20.07%and42.64%lower than those without *** flame emissivity with methane assisted ignition was 80.46%lower than that without methane assisted ignition,due to the carbon-hydrogen ratio of kerosene was higher than that of *** spectral emissivities at 600 nm with LIPCE were 1.25%,22.2%,and 4.22%lower than those without LIPCE at a=1.0a(with methane assisted ignition),1.0b(without methane assisted ignition)and *** effect of concentration in the emissivity was removed by normalization to analyze the flame radiative properties in the RBCC combustor *** maximum differences of flame normalized emissivity were 50.91%without LIPCE and 27.53%with *** flame radiative properties were stabilized under the thermal and chemical effects of laser induced plasma at a=0.6.

关键词： Rocket-based combined-cycle Supersonic combustion Flame temperature measurement Emissivity Laser induced plasma combustion enhancement

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Measurements of Laminar Burning Velocities of Alternative Fuels:Application in Transport and Aerospace

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Journal of Thermal Science 2023年第2期32卷 503-512页

作者： RICHTER Sandra BRAUN-UNKHOFF Marina NAUMANN Clemens German Aerospace Center(DLR) Institute of Combustion TechnologyDepartment of Chemical Kinetics and AnalyticsStuttgart 70569Germany

The laminar burning velocity belongs to the fundamental combustion properties of fuels being a measure for their heat release,flame length,as well as reactivity and combustion stability,and thus,may impact the design of burners and combustion ***,these experimental data are needed for the validation and optimization within the construction and development of detailed chemical kinetic reaction *** this study,an overview of the different applications of fuel characterization regarding the specific area of interest(road transport,aviation,and aerospace)will be *** on the application,effects of different molecular characteristics on the laminar burning velocity are evaluated:the presence of oxygen atoms and the grade of branching in a specific fuel molecule as well as the difference in the type of a chemical bond,here,single and double *** of alternative fuels being discussed in the present study are:(Ⅰ)oxymethylene ether(OMEn)in the field of road transport;(Ⅱ)a paraffinic Alcohol-to-Jet fuel as sustainable aviation fuel;and(Ⅲ)mixtures of ethane or ethene with nitrous oxide as green propellants for rocket propulsion applications.

关键词： laminar burning velocity alternative sustainable fuels road transport aviation fuels green propellants

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SIMULATION OF SUDDEN-EXPANSION AND SWIRLING GAS-PARTICLE flowS USING A TWO-FLUID PARTICLE-WALL COLLISION MODEL WITH CONSIDERATION OF THE WALL ROUGHNESS

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Acta Mechanica Sinica 2004年第5期20卷 447-454页

作者：周力行张夏 department of Engineering Mechanics State Key Laboratory of Clean Coal CombustionTsinghua UniversityBeijing 100084China

A two-fluid particle-wall collision model with consideration of wall roughness is pro- *** takes into account the effects of the friction,restitution and in particular the wall roughness, and hence the redistribution of Reynolds stress in different directions,the absorption of turbulent en- ergy from the mean motion and the attenuation of particle motion by the *** proposed model is used to simulate sudden-expansion and swirling gas-particle flows and is validated by comparing with experimental *** results show that the proposed model gives better results than those obtained by the presently used zero-gradient ***,it is suggested that the proposed model should be used as the wall boundary condition for the particle phase in place of the presently used boundary condition.

关键词： particle-wall collision wall boundary condition gas-particle flows wall roughness

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Introduction to investigations of the negative corona and EHD flow in gaseous two-phase fluids

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Plasma Science and Technology 2018年第5期20卷 147-156页

作者： Jerzy MIZERACZYK Artur BERENDT department of Marine Electronics Gdynia Maritime University Institute of Fluid flow Machinery Polish Academy of Sciences

Research interests have recently been directed towards electrical discharges in multi-phase *** electrical discharges,such as lightning and coronas,occur in the Earth＇s atmosphere,which is actually a mixture of gaseous phase（air） and suspended solid and liquid particulate matters（PMs）.An example of an anthropogenic gaseous multi-phase environment is the flow of flue gas through electrostatic precipitators（ESPs）,which are generally regarded as a mixture of a post-combustion gas with solid PM and microdroplets suspended in *** discharges in multi-phase environments,the knowledge of which is scarce,are becoming an attractive research subject,offering a wide variety of possible discharges and multi-phase environments to be *** paper is an introduction to electrical discharges in multi-phase *** is focused on DC negative coronas and accompanying electrohydrodynamic（EHD） flows in a gaseous two-phase fluid formed by air（a gaseous phase） and solid PM（a solid phase）,run under laboratory *** introduction is based on a review of the relevant *** cases will be considered：the first case is of a gaseous two-phase fluid,initially motionless in a closed chamber before being subjected to a negative corona（with the needle-toplate electrode arrangement）,which afterwards induces an EHD flow in the chamber,and the second,of a gaseous two-phase fluid flowing transversely with respect to the needle-to-plate electrode axis along a chamber with a corona discharge running between the *** review-based introductory paper should be of interest to theoretical researchers and modellers in the field of negative corona discharges in single-or two-phase fluids,and for engineers who work on designing EHD devices（such as ESPs,EHD pumps,and smoke detectors）.

关键词： DC negative corona discharge Trichel pulses gaseous two-phase flow air withsuspended particle flow ESP EHD

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Particle simulation of grid system for krypton ion thrusters

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Chinese Journal of Aeronautics 2018年第4期31卷 719-726页

作者： Maolin CHEN Anbang SUN Chong CHEN Guangqing XIA Science and Technology on combustion Internal Flow and Thermo-Structure Laboratory Northwestern Polytechnical University State Key Laboratory of Electrical Insulation and Power Equipment Xi’an Jiaotong University State Key Laboratory of Structural Analysis for Industrial Equipment Dalian University of Technology

The transport processes of plasmas in grid systems of krypton（Kr） ion thrusters at different acceleration voltages were simulated with a 3 D-PIC model, and the result was compared with xenon（Xe） ion thrusters. The variation of the screen grid transparency, the accelerator grid current ratio and the divergence loss were explored. It is found that the screen grid transparency increases with the acceleration voltage and decreases with the beam current, while the accelerator grid current ratio and divergence loss decrease first and then increase with the beam current. This result is the same with Xe ion thrusters. Simulation results also show that Kr ion thrusters have more advantages than Xe ion thrusters, such as higher screen grid transparency, smaller accelerator grid current ratio, larger cut-off current threshold, and better divergence loss characteristic. These advantages mean that Kr ion thrusters have the ability of operating in a wide range of current. Through comprehensive analyses, it can be concluded that using Kr as propellant is very suitable for a multimode ion thruster design.

关键词： Grid system Ion thrusters Krypton Particle in cell method Plasma

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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： ZHOUYANG CHENG YUCHEN HUA YANG 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 downstream regulators are regarded to be implicated in the progression of multiple types of *** have shown that the lncRNA small nucleolar RNA host gene 4(SNHG4)serves as a tumor promoter in various malignancies,while its function in GC has yet to be ***,our study aimed to explore the role and underlying mechanism of SNHG4 in ***:We used qRT-PCR to analyze SNHG4 expression in GC tissues and ***-Meier analysis was used to assess the correlation between SNHG4 expression and the survival rate of GC *** function experiments such as CCK-8,BrdU,colony formation,flow cytometry analysis,and transwell were performed to explore the effects of SNHG4 on GC cell proliferation,apoptosis,cell cycle,migration,and *** also established xenograft mouse models to explore the effect of SNHG4 on GC tumor ***,dual luciferase reporter assay was used to verify the interaction between SNHG4 and miR-409-3p and between miR-409-3p and cAMP responsive element binding protein 1(CREB1).Results:The results indicated that SNHG4 was overexpressed in GC tissues and cell lines,and was linked with poor survival rate of GC ***4 promoted GC cell proliferation,migration,and invasion while inhibiting cell apoptosis and cell cycle arrest in *** in vivo experiment indicated that SNHG4 facilitated GC tumor ***,SNHG4 was demonstrated to bind to ***,CREB1 was directly targeted by *** assays demonstrated that miR-409-3p deficiency reversed the suppressive impact of SNHG4 knockdown on GC cell ***,miR-409-3p was 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)

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Continuous-flow columns packed with zero-valent iron and iron sulfide as a feasible strategy to remediate the persistent contaminant nitroguanidine

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Defence Technology(防务技术) 2025年第1期43卷 26-34页

作者： Youngjae Yu Erika E.Rios-Valenciana Robert A.Root Reyes Sierra-Alvarez Jon Chorover Jim A.Field department of Chemical and Environmental Engineering The University of ArizonaP.O.Box 210011TucsonAZ 85721USA department of Environmental Science The University of ArizonaTucsonAZ 85721USA

The insensitive munitions compound nitroguanidine(NQ)is used by the *** to avoid unintended ***,NQ also represents an emerging contaminant whose environmental emissions can cause toxicity toward aquatic organisms,indicating the need for effective remediation ***,we investigated the feasibility of treating water contaminated with NQ in continuous-flow columns packed with zero-valent iron(ZVI)or iron sulfide(FeS).Initially,the impact of pH on NQ transformation by ZVI or FeS was evaluated in batch *** pseudo first-order rate constant for NQ transformation(k_(1,NQ))by ZVI was 8-10 times higher at pH 3.0 compared to pH 5.5 and 7.0,whereas similar k_(1,NQ)values were obtained for FeS at pH *** on these findings,the influent p H fed to the ZVIand Fe S-packed columns was adjusted to 3.0 and 5.5,*** reactors transformed NQ into nitrosoguanidine(Nso Q).Further transformation of Nso Q by ZVI produced aminoguanidine,guanidine,and cyanamide,whereas Nso Q transformation by Fe S produced guanidine,ammonium,and traces of *** outperformed Fe S as a reactive material to remove *** ZVI-packed column effectively removed NQ below detection even after 45 d of operation(490 pore volumes,PV).In contrast,NQ breakthrough(removal efficiency490 PV)suggest that the technology is a promising approach for NQ treatment in packed-bed reactors and in situ remediation.

关键词： Continuous water treatment Iron-based minerals Chemical reduction pH Aminoguanidine Guanidine

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STIL enhances the development of lung adenocarcinoma by regulating the glycolysis pathway

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Oncology Research 2025年第1期33卷 123-132页

作者： LEI WANG XIANJIN XIE department of Respiratory Medicine Jen Ching Memorial HospitalSuzhou215300China department of Respiratory Medicine Shandong Provincial Third HospitalJinan250010China

Background:To investigate SCL/TAL 1 interrupting locus(STIL)’s role and prognostic significance in lung adenocarcinoma(LUAD)progression,we examined STIL and E2 promoter binding factor 1(E2F1)expression and their impacts on LUAD prognosis using Gene Expression Profiling Interactive Analysis(GEPIA).Methods:Functional assays including CCK-8,wound-healing,5-ethynyl-2-deoxyuridine(EdU),Transwell assays,and flow cytometry,elucidated STIL and E2F1’s effects on cell viability,proliferation,apoptosis,and *** set enrichment analysis(GSEA)identified potential pathways,while metabolic assays assessed glucose ***:Our findings reveal that STIL and E2F1 are overexpressed in LUAD,correlating with adverse *** enhances cell proliferation,migration,and invasion,and suppresses apoptosis,activating downstream of *** E2F1 reversed the promotion effect of the STIL overexpression on cell viability and ***,STIL modulates glycolysis,influencing glucose consumption,lactate production,and energy balance in LUAD ***:Our model,incorporating STIL,age,and disease stage,robustly predicts patient prognosis,underscored STIL’s pivotal role in LUAD pathogenesis through metabolic *** comprehensive approach not only confirms STIL’s prognostic value but also highlights its potential as a therapeutic target in LUAD.

关键词： SCL/TAL1 interrupting locus(STIL) Lung adenocarcinoma E2 promoter binding factor 1 Glycolysis

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