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Plasma Science and Technology 2004年第2期6卷 2199-2203页

作者： m.asif Amna Ikram Institute of Plasma Physics Chinese Academy of SciencesUniversity of Engineering and Technology Lahore 54000 Pakistan Hefei 230031 China Department of Physics Government College University Lahore 54000 Pakistan

In the experiment to determine the plasma electron temperature, a modifiedmultichannel PIn diodes assembly is used as detectors to record the X-ray pulses from a low-energymather-type plasma focus device energized by a 32μF, 15 kV (3.6kJ) single capacitor, with deuteriumas a filling gas. The ratio of the integrated bremsstrahlung emission transmitting through foils tothe total incident flux as a function of foil thickness at various temperatures is obtained forfoil absorbers of material. Using 3 μm, 6 μm, 9 μm,12 μm,15 μm and 18 μm thick aluminiumabsorbers, the transmitted X-ray flux is detected. By comparing the experimental and theoreticalcurves through a computer program, the plasma electron temperature is determined. Results show thatthe deuterium focus plasma electron temperature is about 800 eV.

关键词： plasma focus PIn diodes X-ray foil absorber thickness

A Seismic Hazard map Based on Geology and Shear-wave Velocity in Rawalpindi–Islamabad,Pakistan

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Acta Geologica Sinica(English Edition) 2021年第2期95卷 659-673页

作者： Sarfraz KHAn muhammad WASEEm m.asif KHAn national Centre of Excellence in Geology University of Peshawar 25130KPPakistan University of Peshawar 25120 KPPakistan

The‘twin cities’district of Rawalpindi–Islamabad is among the most endangered seismic regions in Pakistan,with the seismic hazard assessed(0.32 g)to intensity IX mmI for a 475-year return period.A seismic hazard map for Rawalpindi–Islamabad is presented herein,based on 85 shear-wave velocity(VS)profiles obtained through geophysical H/V measurements and from the geological map of the *** between the average top thirty-meter shear-wave velocities(VS30)and surficial geological units have been *** peak ground acceleration(PGA)maps for 150,475 and 2475-year return periods were converted into a seismic intensity *** increments for different soils were used to compute PGA values for 150,475 and 2475-year return *** located on softer ground experienced a higher degree of damage from moderate *** to the presence of soft clay or liquefiable soil and lateral spreading,a few locations may be classified as hybrid sites class C and *** map is a critical step in facilitating code-based site classification and seismic design throughout Rawalpindi–*** the seismic hazard map based on seismic intensities is no longer used in engineering geology,it is still important in seismological analysis and for civil protection purposes.

关键词： seismic hazard site classification intensity increment engineering geology Rawalpindi-Islamabad

neurocircuit regeneration by extracellular matrix reprogramming

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neural Regeneration Research 2025年第8期20卷 2300-2301页

作者： Shengzhang Su Ian n.Levasseur Kimberly m.Alonge Department of medicinal Chemistry University of WashingtonSeattleWAUSA Department of Chemistry University of WashingtonSeattleWAUSA Department of medicine University of Washington Medicine Diabetes InstituteSeattleWAUSA

The brain's extracellular matrix(ECm),which is comprised of protein and glycosaminoglycan(GAG)scaffolds,constitutes 20%-40% of the human brain and is considered one of the largest influencers on brain cell functioning(Soles et al.,2023).Synthesized by neural and glial cells,the brain's ECm regulates a myriad of homeostatic cellular processes,including neuronal plasticity and firing(miyata et al.,2012),cation buffering(moraws ki et al.,2015),and glia-neuron interactions(Anderson et al.,2016).Considering the diversity of functions,dynamic remodeling of the brain's ECm indicates that this understudied medium is an active participant in both normal physiology and neurological diseases.

关键词： matrix programming

mitochondria–cGAS–STInG axis is a potential therapeutic target for senescence-dependent inflammaging-associated neurodegeneration

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neural Regeneration Research 2025年第3期20卷 805-807页

作者： Josém.Izquierdo Centro de Biología molecular Severo Ochoa(CBm) Consejo Superior de Investigaciones Científicas-Universidad Autónoma de Madrid(CSIC-UAM)MadridSpain

The word “senescence” comes from the Latin senescens, meaning “to begin to age”, and is characterized by a long-lasting but reversible block in proliferation, resulting from stress-induced cell cycle arrest of pre... 详细信息

关键词： Latin potential lasting

Some novel integration techniques to explore the conformable m-fractional Schrödinger-Hirota equation

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Journal of Ocean Engineering and Science 2022年第4期7卷 337-344页

作者： Asim Zafar m.Raheel m.asif Kamyar Hosseini mohammad mirzazadeh Lanre Akinyemi Department of mathematics COMSATS University IslamabadVehari CampusPakistan Department of mathematics and Statistics ISP MultanPakistan Department of mathematics Rasht BranchIslamic Azad UniversityRashtIran Department of Engineering Sciences Faculty of Technology and EngineeringEast of GuilanUniversity of GuilanVajargah P.C.44891-63157RudsarIran Department of mathematics Lafayette CollegeEastonPAUSA

The current study deals with exact soliton solutions for Schrödinger-Hirota(SH)equation via two modi-fied integration *** methods are known as the improved(G/G)-expansion method and the Kudryashov *** model is a generalized version of the nonlinear Schrödinger(nLS)equation with higher order dispersion and cubic *** can be considered as a more accurate approximation than the nLS equation in explaining wave propagation in the ocean and optical fibers.A novel deriva-tive operator named as the conformable truncated m-fractional is used to study the above mentioned *** obtained results can be used in describing the Schrödinger-Hirota equation in some better *** the obtained results are verified through symbolic computational ***,the ob-tained results show that the suggested approaches have broaden capacity to secure some new soliton type solutions for the fractional differential equations in an effective *** the end,the results are also explained through their graphical representations.

关键词： Shrödinger-Hirota equation Truncated m-fractional derivative Soliton solutions

Hydrodynamics and Heat Transfer Analysis of Airflow in a Sinusoidally Curved Channel

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Computers, materials & Continua 2022年第6期71卷 4835-4853页

作者： Abid.A.m.m.n m.asif m.m.n Kaleemullah Bhatti Thanin Sitthiwirattham nichaphat Patanarapeelert Department of mathematics and Social Sciences Sukkur IBA UniversitySukkur65200SindhPakistan mathematics Department Faculty of Science and TechnologySuan Dusit UniversityBangkok10300Thailand Department of mathematics Faculty of Applied ScienceKing Mongkut’s University of Technology North BangkokBangkok10800Thailand

For heat transfer enhancement in heat exchangers,different types of channels are often *** performance of heat exchangers can be made better by considering geometry composed of sinusoidally curved *** research studies the modeling and simulation of airflow through a 2πunits long sinusoidally curved wavy *** the purpose,two-dimensional navier Stokes equations along with heat equations are under *** simulate the fluid flow problem,the finite element-based software COmSOL multiphysics 5.4 is *** parametric study for Reynolds number from Re=100 to Re=1000 and the period of vibration P from 0 to 5 are *** surface plots,streamline patterns,contours,and graphs are presented for the velocity field magnitude,temperature,and pressure against the Reynolds number as well as period of *** results are compared with various *** is found that due to the creation of periodic contraction regions the velocity magnitude of the flow is continuously increasing with the increase of Reynolds number,on the contrary the pressure is decreasing from inlet to outlet of the ***,a periodic variation in the pressure distribution along the vibrating boundaries has been found with an average increase of 500%for the high Reynolds number.A novel work was done by expressing the rotation rate per second in terms of local Reynolds number for the recirculating regions found due to the periodic oscillation of the *** average temperature near the outlet where a fixed temperature is imposed initially is decreasing with an increase in Reynolds *** convection process is weakened due to an increase of periodic vibration of boundaries.

关键词： Simulation of fluid flow heat transfer cosine function wavy channel

Simulation of non-Isothermal Turbulent Flows Through Circular Rings of Steel

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Computers, materials & Continua 2022年第3期70卷 4341-4355页

作者： Abid.A.m.m.n m.asif m.m.n Kaleemullah Bhatti Kamsing nonlaopon Ilyas Khan Department of mathematics and Social Sciences Sukkur IBA UniversitySukkur65200SindhPakistan Department of mathematics Faculty of ScienceKhon Kaen UniversityKhon Kaen40002Thailand Department of mathematics College of Science Al-ZulfiMajmaah UniversityAl-Majmaah11952Saudi Arabia

This article is intended to examine the fluid flow patterns and heat transfer in a rectangular channel embedded with three semi-circular cylinders comprised of steel at the *** an organization is used to generate the heat exchangers with tube and shell because of the production of more turbulence due to zigzag path which is in favor of rapid heat *** of little maintenance,the heat exchanger of such type is extensively ***,we generate simulation of flow and heat transfer using nonisothermal flow interface in the Comsol multiphysics 5.4 which executes the Reynolds averaged navier stokes equation(RAnS)model of the turbulent flow together with heat *** is tested with Prandtl number(Pr=0.7)with inlet velocity magnitude in the range from 1 to 2 m/sec which generates the Reynolds number in the range of 2.2×10^(5) to 4.4×10^(5) with turbulence kinetic energy and the dissipation rate in ranges(3.75×10^(−3) to 1.5×10^(−2))and(3.73×10^(−3)−3×10^(−2))*** correlations available in the literature are used in order to check *** results are displayed through streamlines,surface plots,contour plots,isothermal lines,and *** is concluded that by retaining such an arrangement a quick distribution of the temperature over the domain can be seen and also the velocity magnitude is increasing from 333.15%to a maximum of 514%.The temperature at the middle shows the consistency in value but declines immediately at the *** process becomes faster with the decrease in inlet velocity magnitude.

关键词： Incompressible turbulent flow heat transfer non-isothermal finite element method energy equation

Predicting maximum Lifespan Limits at mean menopausal Age

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Journal of mathematical Research with Applications 2025年第1期 133-142页

作者： m.SUmATHI S.AnTOnY CARLA Department of mathematics N.M.S.S.Vellaichamy Nadar College Research Scholar (Part-time) Madurai Kamaraj University

The age at which a woman enters natural menopause has also been associated to death from any cause. menopause is a natural component of aging that happens between the ages of 45 and 55, with the average menopausal age being 51. Previous research has revealed the age at which women reach menopause, but there is no evidence to support the link between menopause and longevity. We made a study in assessing the limits of maximum lifespan at menopausal age in our previous article. In this paper, we aim to predict the maximum lifespan of women at mean menopausal age.

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Structural and dielectric study of nano-crystalline single phase Sn1-xnixS(Xni=0-10%) showing room temperature ferromagnetism

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Progress in natural Science:materials International 2017年第3期27卷 303-310页

作者： B.Parveen m.Hassan S.Atiq S.Riaz S.naseem m.asif Toseef materials Growth and Simulation Laboratory Department of PhysicsUniversity of the Punjab Centre of Excellence in Solid State Physics University of the Punjab Department of Physics Govt. Islamia College

SnS is a promising Ⅳ-Ⅵ semiconductor,which is very less explored for diluted magnetic semiconducting and dielectric *** this study,the ni doping(xni=0-10mol%) effects on SnS host lattice were investigated.A simple and low cost co-precipitation technique was employed to grow ni doped SnS *** X-ray diffraction confirmed single phase orthorhombic structure with a nano-crystalline nature that was further verified through the surface structure observed by scanning electron *** edge x-ray absorption fine structure spectroscopy revealed a shift in the ni absorption edge towards higher energy,depicting the formation of ni+3oxidation *** impedance measurements,in the frequency range 1 kHz to 20 mHz,depict that owing to the excellent sensitivity to the electromagnetic radiations at the low energy,the ni doped SnS finds potential applications in various energy related *** sample magnetometer measurements have elucidated room temperature ferromagnetism,which depicts potential memory device applications.

关键词： Diluted magnetic semiconductors Room temperature ferromagnetism near edge x-ray absorption fine structure spectroscopy Dielectric properties Co-precipitation method

Advancing healthcare through laboratory on a chip technology:Transforming microorganism identification and diagnostics

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World Journal of Clinical Cases 2025年第3期13卷 9-19页

作者： Carlos m Ardila Department of Basic Sciences Biomedical Stomatology Research GroupUniversidad de Antioquia U de AMedellín 0057Colombia

In a recent case report in the World Journal of Clinical Cases,emphasized the crucial role of rapidly and accurately identifying pathogens to optimize patient treatment ***-on-a-chip(LOC)technology has emerged as a transformative tool in health care,offering rapid,sensitive,and specific identification of *** editorial provides a comprehensive overview of LOC technology,highlighting its principles,advantages,applications,challenges,and future *** studies from the field have demonstrated the practical benefits of LOC devices in clinical diagnostics,epidemiology,and food *** studies have underscored the superiority of LOC technology over traditional methods,showcasing improvements in speed,accuracy,and *** future integration of LOC with biosensors,artificial intelligence,and data analytics promises further innovation and *** call to action emphasizes the importance of continued research,investment,and adoption to realize the full potential of LOC technology in improving healthcare outcomes worldwide.

关键词： Laboratory-on-a-chip microorganism identification Diagnostics Point-ofcare testing Biosensors