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Chinese Physics B 2017年第1期26卷 304-309页

作者： N yadav S Ghosh P S malviya School of Studies in Physics Vikram University Ujjain 465010 India Department of Physics Govt. J.N.S. Post Graduate College Shujalpur 465333 India

We report nonlinear parametric interactions using a hydrodynamic model of ion-implanted semiconductor plasmas having strain-dependent dielectric constants（SDDC）. High-dielectric-constant materials are technologically important because of their nonlinear properties. We find that the third-order susceptibility varies in the range 10^-14--10^-12m^2·V^-2 for ion-implanted semiconductor plasmas, which is in good agreement with previous results. It is found that the presence of SDDC in ion-implanted semiconductor plasma modifies the characteristic properties of the material.

关键词： nonlinear parametric interactions ion-implanted semiconductor plasmas strain-dependent dielectric constant

Gas hydrate saturation from NGHP 02 LWD data in the mahanadi Basin

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Energy Geoscience 2024年第2期5卷 279-289页

作者： Uma Shankar Pradeep kumar yadav Sneha Devi Udham Singh yadav Department of Geophysics Institute of ScienceBHUVaranasi221005India Oil and Natural Gas Corporation Ltd. Gas Hydrate Research&Technology Centre(GHRTC)Panvel410221Navi MumbaiIndia

During the Indian National Gas Hydrate Program(NGHP)Expedition 02,Logging-while-drilling(LWD)logs were acquired at three sites(NGHP-02-11,NGHP-02-12,and NGHP-02-13)across the mahanadi Basin in area *** applied rock physics theory to available sonic velocity logs to know the distribution of gas hydrate at site NGHP-02-11 and *** physics modeling using sonic velocity at well location shows that gas hydrate is distributed mainly within the depth intervals of 150-265 m and 100 -215 mbsf at site NGHP-02-11 and NGHP-02-13,respectively,with an average saturation of about 4%of the pore space and the maximum concentration of about 40%of the pore space at 250 m depth at site NGHP-02-11,and at site NGHP-02-13 an average saturation of about 2%of the pore space and the maximum concentration of about 20%of the pore space at 246 m depth,as gas hydrate is distributed mainly within 100-246 mbsf at this *** of gas hydrate estimated from the electrical resistivity method using density derived porosity and electrical resistivity logs from Archie's empirical formula shows high saturation compared to that from the sonic ***,estimates of hydrate saturation based on sonic P-wave velocity may differ significantly from that based on resistivity,because gas and hydrate have higher resistivity than conductive pore fluid and sonic P-wave velocity shows strong effect on gas hydrate as a small amount of gas reduces the velocity significantly while increasing velocity due to the presence of *** site NGHP-02-11,gas hydrate saturation is in the range of 15%e30%,in two zones between 150-180 and 245-265 *** NGHP-02-012 shows a gas hydrate saturation of 20%e30%in the zone between 100 and 207 *** NGHP-02-13 shows a gas hydrate saturation up to 30%in the zone between 215 and 246 *** observations from rock physics modeling and Archie’s approximation show the gas hydrate concentrations are relatively low(<4%of the pore space)at the sites of the

关键词： mahanadi Basin Gas hydrate Sonic log Effective medium modeling Electrical resistivity log Archie’s analysis Gas hydrate saturation

Structural, morphological, dielectrical and magnetic properties of mn substituted cobalt ferrite

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Journal of Semiconductors 2013年第9期34卷 16-20页

作者： S.P.yadav S.S.Shinde A.A.kadam k.Y.Rajpure karmveer Bhaurao Patil College VashiNavi Mumbai Maharashtra-400703India Electrochemical materials Laboratory Department of PhysicsShivaji UniversityKolhapur Maharashtra-416004India Smt.kashibai Navale College of Engineering Wadgaon BkPune Maharashtra-411041 India

The C01-xmnxFez04 （0 ≤ x 〈-5 0.5） ferrite system is synthesized by using an auto combustion technique using metal nitrates. The influence of mn substitution on the structural, electrical, impedance and magnetic properties of cobalt ferrite is reported. X-ray diffraction patterns of the prepared samples confirm that the Bragg＇s peak belongs to a spinel cubic crystal structure. The lattice constant of cobalt ferrite increases with the increase in mn content. The microstructural study is carried out by using the SEm technique and the average grain size continues to increase with increasing manganese content. AC conductivity analysis suggests that the conduction is due to small polaron hopping. DC electrical resistivity decreases with increasing temperature for a Col-xmnxFe204 system showing semiconducting behavior. The activation energy is found to be higher in the paramagnetic region than the ferromagnetic region. Curie temperature decreases with mn substitution in the host ferrite system. Dielectric dispersion having maxwell-Wagner-type interfacial polarization has been observed for cobalt ferrite samples. magnetic properties have been studied by measuring m-H plots. The saturation and remanent magnetization increases with mn substitution.

关键词： combustion mn substitution structural dielectric magnetic

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

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

Lyra's cosmology of hybrid universe in Bianchi-V space-time

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Research in Astronomy and Astrophysics 2018年第6期18卷 27-34页

作者： Anil kumar yadav Vinod kumar Bhardwaj Department of Physics United College of Engineering and Research Department of mathematics GLA University

In this paper we have searched for the existence of Lyra’s cosmology in a hybrid universe with minimal interaction between dark energy and normal matter using Bianchi-V space-time. To derive the exact solution, the average scale factor is taken as a =(t~nekt)1/m which describes the hybrid nature of the scale factor and generates a model of the transitioning universe from the early deceleration phase to the present acceleration phase. The quintessence model makes the matter content of the derived universe remarkably able to satisfy the null, dominant and strong energy condition. It has been found that the time varying displacement β(t) co-relates with the nature of cosmological constant Λ(t). We also discuss some physical and geometrical features of the universe.

关键词： cosmology: hybrid universe cosmology: dark energy cosmology: Bianchi-V spacetime

Crop productivity,soil health,and energy dynamics of Indian Himalayan intensified organic maize-based systems

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International Soil and Water Conservation Research 2021年第2期9卷 260-270页

作者： Raghavendra Singh Subhash Babu R.k.Avasthe Gulab Singh yadav Anup Das k.P.mohapatra Amit kumar Vinod k.Singh Puran Chandra ICAR-National Organic Farming Research Institute GangtokSikkim737102India Division of Agronomy ICAR-Indian Agricultural Research InstituteNew Delhi110012India ICAR Research Complex for NEH Region Tripura CentreLembucherraTripura799210India ICAR-National Bureau of Plant Genetic Resources New Delhi110012India

The sustainability of prevailing maize-fallow system in rainfed ecosystems of the Eastern Himalayan region(EHR)of India is often questioned due to poor economic return and negative impact on soil ***,the six cropping systems,maize-fallow(m-F),maize t cowpea-rapeseed(m t C-Rs),maize t cowpea-buckwheat(m t C-Bw),maize t cowpea-barley(m t CeB),maize t cowpea-garden pea(m t C-GP)and maize t cowpeaerajmash(m t C-R)in the main plot and three soil moisture conservation measures,no-mulch(Nm),maize stover mulch(mSm)and maize stover t weed biomass mulch(mSm t WBm)in sub-plot were evaluated for four consecutive years(2014-18)at a Research Farm in fixed plot *** indicated that cowpea co-culture with maize and inclusion of winter crop increased maize yield by 6.2e23.5%over *** the systems,the m t C-GP recorded the highest crop *** residual effect of mSm t WBm increased maize grain yield by 19.1%over *** of maize t cowpea-winter crops significantly improved the available N(3.2e12.9%),P(3.6 e12.7%),k(1.9e26.3%),organic carbon(9.2e16.8%),microbial biomass carbon-mBC(15.2e43.9%)and dehydrogenases-DHA(17.2e42.3%)in soil at 0e15 cm depth as compared to *** m t C-GP also recorded maximum net return(US$2460 ha1),benefit:cost(B:C)ratio(2.86)and energy use efficiency(7.9%).The mSm t WBm recorded higher net return(US$1680 ha1)and B:C ratio(2.46)over ***,cowpea t maize-garden pea(m t C-GP)along with the application of mSm t WBm is a sustainable production practice to intensify the organically managed maize-fallow system in rainfed regions of the EHR of India and other similar ecosystems.

关键词： Crop intensification Energy productivity Gross return Soil health Water productivity

柴桂叶提取物介导的银纳米粒子的绿色合成及其在吡喃并吡唑衍生物合成中的应用（英文）

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催化学报 2015年第7期36卷 1042-1046页

作者： Sneha yadav Jitender m.khurana Department of Chemistry University of Delhi

A novel, biochemical, and eco-friendly method has been developed for the synthesis of Ag nanoparticles using an aqueous leaf extract of readily accessible Cinnamomum tamala as reducing and stabilizing agents. These Ag nanoparticles were used to catalyze the synthesis of pyranopyrazoles. The green nature and ease of recovery and reusability of the catalyst, together with high yields of products, make this protocol attractive and useful.

关键词：绿色合成叶提取物银纳米粒子银纳米颗粒介导肉桂生态友好可重用性

Impact of varying carbon concentration in SiC S/D asymmetric dual-k spacer for high performance and reliable FinFET

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Journal of Semiconductors 2018年第10期39卷 17-22页

作者： maisagalla Gopal Atul Awadhiya NANDakishor yadav S.k.Vishvakarma Vaibhav Neema Discipline of Electrical Engineering Indian Institute of Technology Indore Department of Electronics and Instrumentation Engineering Institute of Engineering and TechnologyDevi Ahilya University Department of Electronics and Telecommunication Engineering Institute of Engineering and TechnologyDevi Ahilya University

We propose a reliable asymmetric dual-k spacer with SiC source/drain（S/D）pocket as a stressor for a Si *** enhances the device performance in terms of electron mobility（emobility）,current driving capabilities,transconductance（G_m）and subthreshold slope（SS）.The improved performance is an amalgamation of longitudinal tensile stress along the channel and reduced series *** analysed the variation in drive current for different values of carbon（C）mole fraction y in Si_（1-y）C_*** is found that the mole fraction also helps to improve device lifetime,performance enhancement also pointed by transconductance variation with the gate *** the simulations are performed in the 3-D Sentaurus TCAD *** proposed device structure achieved ION=2.17 mA/μm for Si_（0.3）C_（0.7） and found that Si_（0.5）C_（0.5） is more suitable for the perspective of a process variation effect for 14 nm as the gate *** introduce reliability issues and their solutions for Si（1-y）Cy FinFET for the first time.

关键词： asymmetric dual-k spacer short channel effects (SCEs) SiC S/D stressors reliability process variation