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Transport mechanism in chemically reactive hybrid nanofluid flow containing gyrotactic micro-organisms over a curved oscillatory surface

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Applied mathematics and mechanics(English Edition) 2025年第1期46卷 177-192页

作者： m.NAVEED m.ImRAN T.ASGHAR Z.ABBAS Department of mathematics Division of Science and TechnologyUniversity of Education Department of mathematics The Islamia University of Bahawalpur

This paper examines the transport analysis, including both heat transfer and mass transfer, in hybrid nanofluid flow containing gyrotactic microorganisms towards a curved oscillatory surface. The influence of magnetic fields is also inspected in terms of their physical characteristics. To depict the phenomena of transport, modified versions of both Fick's and Fourier's laws are used. Additionally, the characteristics of both heterogeneous and homogeneous chemical reactions are also incorporated. Utilizing a curvilinear coordinate system, the flow problem is formulated as partial differential equations(PDEs)for momentum, concentration, microorganism field, and energy. An analytical solution to the obtained flow equations is achieved utilizing the homotopy analysis method(HAm).The effects of significant flow parameters on the pressure and microorganism fields, velocity, oscillation velocity, concentration, and temperature distributions are shown via graphs. Furthermore, the variations in skin friction, mass transfer rate, heat transfer rate, and local motile number due to different involved parameters are presented in tables and are analyzed in detail. Graphical results indicate that the curves of velocity and temperature fields are enhanced as the values of the solid volume fraction variables *** is also verified that the concentration rate field decreases as the values of the homogeneous reaction strength parameter and the radius of curvature parameter increase, and it increases with the Schmidt number and the heterogeneous reaction strength *** outcomes show a favorable response of the motile number to advanced values of the Peclet number, the Schmidt number, the microorganism difference parameter, and the bio-convective Lewis number.

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Brain-penetrating neurotrophic factor mimetics: HER-096 as a disease-modifying therapy for Parkinson’s disease

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Neural Regeneration Research 2025年第4期20卷 1094-1095页

作者： Natalia Kulesskaya Kira m.Holmström Henri J.Huttunen Herantis Pharma Plc EspooFinland

Neurotrophic factors as a therapeutic approach in neurodegenerative diseases:A major unmet need in the field of central nervous system diseases is disease-modifying *** for decades there have been various symptomatic treatments available to alleviate the symptoms of the disease,disease-modification,*** that stop,significantly delay,or reverse the progression of the disease,has been turned out to a difficult goal to achieve.

关键词： diseases treatment therapeutic

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hl-2m装置磁测量传感器的定位安装

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核聚变与等离子体物理 2021年第S1期41卷 425-430页

作者：梁绍勇张均钊孙腾飞季小全刘健 hl-2m研制团队核工业西南物理研究院成都610041

通过数值计算评估了hl-2m装置磁测量传感器安装精度的要求,其中磁通环坐标(R,Z)的安装偏差要求达到±2.0mm以内,磁探针的(R,Z)偏差要求在±1.0mm以内、角度偏差在±0.1°以内。定位安装采用高精度激光跟踪仪和关节测量臂结合,设备定位... 详细信息

通过数值计算评估了hl-2m装置磁测量传感器安装精度的要求,其中磁通环坐标(R,Z)的安装偏差要求达到±2.0mm以内,磁探针的(R,Z)偏差要求在±1.0mm以内、角度偏差在±0.1°以内。定位安装采用高精度激光跟踪仪和关节测量臂结合,设备定位精度在±0.3mm。根据不同种类的磁测量传感器的定位安装特点,优化设计了包括磁通环、磁探针阵列、逆磁同心圆等的定位结构,将hl-2m磁测量传感器的安装精度控制到在±0.5mm水平。

关键词： hl-2m装置磁测量定位安装工装结构

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Arctic sea-ice extent: No record minimum in 2023 or recent years

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Atmospheric and Oceanic Science Letters 2025年第1期18卷 52-55页

作者： Ola m.Johannessen Tor I.Olaussen Nansen Scientific Society BergenNorway Nansen Environmental and Remote Sensing Center BergenNorway

Arctic sea-ice extent reaches its minimum each year in September. On 11 September 2023 the minimum was 4.969 million square kilometers(***^(2)). This was not a record low, which occurred in 2012, when the minimum was 4.175 ***^(2), 0.794 ***^(2) less than the minimum in 2023. However, the ice extent had decreased by 0.432 ***^(2) compared with 2022. Nevertheless, the summer melting in 2023 was remarkably less than expected when considering the strong heat waves in the atmosphere and ocean, with record temperatures set around the world. In general, there is a high correlation between the long-term decrease in sea-ice extent and the increasing CO_(2) in the atmosphere, where the increase of CO_(2) in recent decades explains about 80% of the decrease in sea ice in September, while the remainder is caused by natural variability.

关键词： Sea ice Arctic minimum ice Climate

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Dynamic Behaviour of a Caisson Quaywall Under Strong Earthquake

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China Ocean Engineering 1999年第1期14卷 47-62页

作者： Liu, hl Dai, HC Iai, S Hohai Univ Geotech Engn Res Inst Nanjing 210098 Peoples R China China Yangtze Three Gorges Project Dev Corp Yichang 443002 Peoples R China minist Transport Port & Harbour Res Inst Nagase 239 Japan

Effective stress analysis is performed to evaluate the residual displacement of a caisson quaywall during 1994 Hokkaido- Toho- Oki Earthquake and 1993 Kushiro- Oki Earthquake. The constitutive model used in this study is a multiple shear mechanism type defined in strain space and can take into account the effect of rotation of principal stress axis. The earthquake accelerations recorded at the outcropping rock during the earthquake are used as input bedrock motion. The results of finite element analysis are in good agreement with the observed behaviour of the quaywall. The analysis also indicates that liquefaction and high excess porewater pressure have a significant effect on the deformation of the caisson. Soil improvement is speculated as the most reliable measures against liquefaction. The influence of soil improvement and the reasonable improved area are discussed in the paper.

关键词： caisson quaywall effective stress analysis lique faction residual deformation

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hl-2m真空室制造工艺难点分析及优化

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核聚变与等离子体物理 2021年第S1期41卷 332-336页

作者：宋斌斌冉红侯吉来黄运聪唐乐 hl-2m研制团队核工业西南物理研究院成都610041

根据hl-2m真空室结构及运行工况,对hl-2m真空室制造过程的工艺难点进行了深入的分析。结合前期试验段制造经验,优化了真空室制造工艺,细化了真空室产品的制造工艺方案。通过优化后工艺措施的实施,提高了真空室的制造质量,并为后续磁约... 详细信息

根据hl-2m真空室结构及运行工况,对hl-2m真空室制造过程的工艺难点进行了深入的分析。结合前期试验段制造经验,优化了真空室制造工艺,细化了真空室产品的制造工艺方案。通过优化后工艺措施的实施,提高了真空室的制造质量,并为后续磁约束聚变装置真空室的制造积累了大量的经验。

关键词： hl-2m装置真空室制造工艺

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Regression analysis of squeezing-induced hybrid nanofluid flow in Darcy-Forchheimer porous medium

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Applied mathematics and mechanics(English Edition) 2025年第1期46卷 193-208页

作者： K.mUHAmmAD m.SARFRAZ Department of Humanities and Sciences School of Electrical Engineering and Computer Science National University of Sciences and Technology Department of mathematics Quaid-i-Azam University

This article presents a mathematical model addressing a scenario involving a hybrid nanofluid flow between two infinite parallel plates. One plate remains stationary, while the other moves downward at a squeezing velocity. The space between these plates contains a Darcy-Forchheimer porous medium. A mixture of water-based fluid with gold(Au) and silicon dioxide(Si O2) nanoparticles is formulated. In contrast to the conventional Fourier's heat flux equation, this study employs the Cattaneo-Christov heat flux equation. A uniform magnetic field is applied perpendicular to the flow direction, invoking magnetohydrodynamic(mHD) effects. Further, the model accounts for Joule heating, which is the heat generated when an electric current passes through the fluid. The problem is solved via NDSolve in mATHEmATICA. Numerical and statistical analyses are conducted to provide insights into the behavior of the nanomaterials between the parallel plates with respect to the flow, energy transport, and skin *** findings of this study have potential applications in enhancing cooling systems and optimizing thermal management strategies. It is observed that the squeezing motion generates additional pressure gradients within the fluid, which enhances the flow rate but reduces the frictional drag. Consequently, the fluid is pushed more vigorously between the plates, increasing the flow velocity. As the fluid experiences higher flow rates due to the increased squeezing effect, it spends less time in the region between the plates. The thermal relaxation, however, abruptly changes the temperature, leading to a decrease in the temperature fluctuations.

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Stochastic simulation of chemical chaos

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Chinese Science Bulletin 1997年第1期42卷 47-50页

作者： Wang, hl Xin, HW UNIV SCI & TECHNOL CHINA DEPT CHEM PHYSHEFEI 230026PEOPLES R CHINA

A chemical reaction is often described by a set of ordinary differential equations based on the mass action law of chemical kinetics. From the microscopic point of view, these macroscopic rate equations originated in the microscopic elastic and reactive collision processes, and a full description of a chemical reaction includes the mean molecular numbers (or concentrations) of reacting species and the fluctuations around these mean values. In normal cases, concentra-

关键词： chaos stochastic simulation nonequilibrium.

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Search for microglia-specific peptides:advances in the discovery toolbox

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Neural Regeneration Research 2025年第2期20卷 471-472页

作者： Ivan Sarabia Kyle m.Koss Department of Surgery University of ArizonaTucsonAZUSA

Uncontrolled and chronic inflammatory states in the central nervous system(CNS)are the hallmark of neurodegenerative pathology and every injury or stroke-related *** key mediators of these neuroinflammatory states are glial cells known as microglia,the resident immune cell at the core of the inflammatory event,and astroglia,which encapsulate inflammatory insults in proteoglycan-rich scar *** gliotic scar blocks significant portions of healthy axonal networking,preventing *** most neuroinflammation is exclusively based on the responses of said microglia,their phenotypes are suggested to follow those of macrophages;m1 and m2 are opposites of pro-and ***,microglial phenotypes have been identified to be on an inflammatory spectrum encompassing developmental,homeostatic,and reparative behaviors as opposed to their ability to affect devastating cell death cascades and scar tissue formation.

关键词： inflammation pathology death

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hl-2m装置扫频ECE测量系统研制

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核聚变与等离子体物理 2021年第S2期41卷 538-543页

作者：方凯锐杨曾辰石中兵余鑫佟瑞海蒋敏 hl-2m研制团队核工业西南物理研究院成都610041 大连理工大学大连116024

为了测量hl-2m装置中的电子温度剖面分布,研制了一套扫频电子回旋辐射(SECE)系统。该系统能够测量装置中心纵场大小在1.4~2.2T时的等离子体电子温度。采用扫频外差接收的方式,径向空间分辨达到2.5cm,时间分辨达到1ms。接收机前端的准光... 详细信息

为了测量hl-2m装置中的电子温度剖面分布,研制了一套扫频电子回旋辐射(SECE)系统。该系统能够测量装置中心纵场大小在1.4~2.2T时的等离子体电子温度。采用扫频外差接收的方式,径向空间分辨达到2.5cm,时间分辨达到1ms。接收机前端的准光学系统采用两级金属反射镜的配置,系统能够接收的最小极向光斑的直径为1.5cm(波数kθm^(-1))。系统的频带范围覆盖33~110GHz,采用VCO作为本振源,双边带混频输出中频信号。后端首次采用高性能对数检波器解调中频,能直接对-70d Bm的微弱信号进行检测,输入-输出工作区间的动态范围达到45dB以上。在实验期间,成功测量到了等离子体中电子逃逸以及回旋辐射产生的信号。

关键词：电子回旋辐射外差式辐射计扫频对数检波器电子温度测量

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