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Synergistic effects of constituents in rare earth-based composites:Enhanced structural,electrical and magnetic properties for water splitting applications

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Journal of Rare Earths 2025年第1期43卷 105-114,I0005页

作者： Chitralekha S.Shankar A.p.singh Functional Materials Research Laboratory Department of PhysicsARSD CollegeUniversity of Delhi1021India Department of physics Multanimal Modi CollegeCh.Charan Singh UniversityMeerutU.PIndia

Rare earth-based Bi_(0.85)La_(0.15)FeO_(3)(BLFO)and NdMnO_(3)(NMO)particles were synthesised using the solidstate route,and their roles affecting structural,electrical,magnetic properties along with hydroelectric application in different concentrations i.e.,(1-x)BLFO:xNMO(where x=0,0.10,0.20,0.30 and 1.0)ceramics composites were investigated.X-ray diffraction analyses confirm the pure-phase formation of BLFO:NMO composites,featuring micrometer-scale crystallite *** transform infrared(FT-IR)spectra of BLFO:NMO composites reveal peak shifts with rising NMO content,indicating composite *** composites exhibit robust Maxwell-Wagner polarization and a pronounced composition-dependent *** addition of NMO to BLFO results in a rise in dielectric permittivity at lower frequencies,confirming relaxor behavior and indicating success in achieving the transition *** spectroscopy facilitates a clearer understanding of how charge carriers contribute to these composites and the impact of grain/grain *** saturation magnetization maximum value(i.e.,0.807 emu/g)was attained in *** coercivity decreases with the addition of NMO in *** results suggest the composite's enhanced suitability for microelectronics and hydropower cells,showing improved hydroelectric cell performance with increased NMO in BLFO,highlighting a notable ion diffusion mechanism.

关键词： Composites X-ray diffraction Relative permittivity Hydroelectric cell Rare earths

Synthetic data as an investigative tool in hypertension and renal diseases research

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World Journal of Methodology 2025年第1期15卷 9-13页

作者： Aleena Jamal som singh Fawad Qureshi Sidney Kimmel Medical College Thomas Jefferson UniversityPhiladelphiaPA 19107United States School of Medicine University of Missouri Kansas CityKansasMO 64106United States Division of Nephrology and Hypertension Mayo ClinicRochesterMN 55905United States

There is a growing body of clinical research on the utility of synthetic data derivatives,an emerging research tool in *** nephrology,clinicians can use machine learning and artificial intelligence as powerful aids in their clinical decision-making while also preserving patient *** is especially important given the epidemiology of chronic kidney disease,renal oncology,and hypertension ***,there remains a need to create a framework for guidance regarding how to better utilize synthetic data as a practical application in this research.

关键词： Synthetic data Artificial intelligence Nephrology Blood pressure Research Editorial

Numerical Simulation of Blood Flow Dynamics in a Stenosed Artery Enhanced by Copper and Alumina Nanoparticles

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Computer Modeling in Engineering & Sciences 2025年第2期142卷 1839-1864页

作者： Haris Alam Zuberi Madan Lal Amol singh Nurul Amira Zainal Ali J.Chamkha Department of Applied Mathematics M.J.P.Rohilkhand UniversityBareilly243006India Fakulti Teknologi dan Kejuruteraan Mekanikal Universiti Teknikal MalaysiaMelaka76100Malaysia Forecasting and Engineering Technology Analysis(FETA)Research Group Universiti Teknikal MalaysiaMelaka76100Malaysia Faculty of Engineering Kuwait College of Science and TechnologyDoha35004Kuwait

Nanotechnology holds immense importance in the biomedical field due to its ability to revolutionize healthcare on a molecular *** by the imperative of enhancing patient outcomes,a comprehensive numerical simulation study on the dynamics of blood flow in a stenosed artery,focusing on the effects of copper and alumina nanoparticles,is *** study employs a 2-dimensional Newtonian blood flow model infused with copper and alumina nanoparticles,considering the influence of a magnetic field,thermal radiation,and various flow *** governing differential equations are first non-dimensionalized to facilitate analysis and subsequently solved using the 4th order collocation method,bvp4c module in *** approach obtains velocity and temperature profiles,revealing the impact of relevant parameters crucial in the biomedical *** findings of this study underscore the significance of understanding blood flow dynamics in stenosed arteries and the potential benefits of utilizing copper and alumina nanoparticles in treatment *** incorporation of nanoparticles introduces novel avenues for enhancing therapeutic interventions,particularly in mitigating the effects of *** elucidation of velocity and temperature profiles provides valuable insights into the behavior of blood flow under different conditions,thereby informing the development of targeted biomedical *** arterial curvature flow parameter influences temperature profiles,with increased parameters promoting more efficient heat *** elevated values of prandtl number and thermal radiation parameter showcase the diminished temperature profiles,indicating stronger dominance of momentum diffusion over thermal diffusion and radiative heat transfer *** analysis of the pertinent physical parameters reveals that the prandtl number has the most significant impact on blood flow dynamics.A statistical analysis of the present results and exist

关键词： Blood flow simulation stenosis copper and alumina nanoparticles thermal radiation curvature parameter

p-wave mesons emitting weak decays of bottom mesons

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Chinese physics C 2025年第02期 51-63页

作者： Maninder Kaur Supreet pal singh R.C.Verma Department of physics Punjabi University

This paper is the extension of our previous work entitled "Searching a systematics for nonfactorizable contributions to B-and ■ hadronic decays".Obtaining the factorizable contributions from the spectator-quark model for Nc=3,a systematic s was identified among the iso spin reduced amplitudes for the nonfactorizable terms among ■→Dπ/D*π/Dρ decay *** systematics enables us to derive a generic formula to help predict the branching fractions for ■-*** by this observation,we extend our analysis to p-wave meson emitting decays of B-meson ■→pA/pT/pS,particularly ■→a1D/πD1/πD'1/πrD2/πD0,which have similar isospin structures and make predictions for B0-decays,for which experimental measurements are not yet available.

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Sodium channel mutation SCN1A T875M,D188V and associated dysfunction with drug resistant epilepsy

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World Journal of psychiatry 2025年第2期15卷 41-47页

作者： pradeep Kumar Dabla Swapan Gupta Swati singh Aroop Viswas Manisha Yadav Subash Chandra Sonkar Bidhan Chandra Koner Department of Biochemistry Govind Ballabh Pant Institute of Postgraduate Medical Education and ResearchNew Delhi 110002DelhiIndia Department of Neurology Govind Ballabh Pant Institute of Postgraduate Medical Education&ResearchNew Delhi 110002DelhiIndia Department of Biochemistry Govind Ballabh Pant Institute of Postgraduate Medical Education&ResearchNew Delhi 110002DelhiIndia Multi-disciplinary Research Unit Maulana Azad Medical CollegeNew Delhi 110002DelhiIndia Department of Biochemistry Maulana Azad Medical CollegeNew Delhi 110002DelhiIndia

BACKGROUND The NaV1.1 sodium channel alpha subunit,encoded by SCN1A,is crucial for initiating and propagating action potentials in ***1A gene has long been an established target in the etiology and therapy of ***,very few studies have investigated the relevance of genetic variations in epilepsy and anti-epileptic drug *** To investigate associations between polymorphisms,rs121917953 T/A and rs121918623 C/T,and drug resistance in epilepsy patients in the north Indian *** A total of 100 age-and sex-matched epilepsy patients(50 drug responsive and 50 drug resistant subjects)were recruited and SCN1A rs121918623 C/T*and rs121917953 T/A*polymorphisms were analyzed by the allele specific-pCR technique.χ^(2)and Fisher’s exact test were used to estimate differences between the distribution of SCN1A rs121918623 and rs121917953 gene polymorphisms among various *** association between distinct rs121917953 genotypes and drug resistance was analyzed using logistic regression *** For the SCN1A rs121917953 T/A*(D188V)polymorphism,a significantly higher proportion of individuals with AT genotype were observed in the drug-resistant group as compared to the drug-responsive ***,a higher risk association was exhibited by AT genotype for drug resistance with an odds ratio of 3.51 and p value=*** the SCN1A rs121918623 C/T*(T875M)polymorphism,no significant difference in genotype distribution was observed between the drug-resistant and drug-sensitive *** Our findings indicate that the SCN1A polymorphism D188V is associated with a higher risk of drug resistance for the AT variant as compared to the homozygous TT *** research is needed at the functional level and in larger cohorts to determine the potential of these genes as a therapeutic target in epilepsy subjects.

关键词： Epilepsy Single nucleotide polymorphisms Drug-resistant epilepsy SCN1A receptor SCN1A rs121918623 and SCN1A rs121917953 gene polymorphism

Higher abundance of DLD protein in buffalobull spermatozoa causes elevated ROSproduction leading to early sperm capacitationand reduction in fertilizing ability

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Journal of Animal Science and Biotechnology 2025年第1期16卷 107-120页

作者： Seema Karanwal Ankit pal Fanny Josan Aditya patel Jatinder singh Chera Sonam Yadav Vikrant Gaur preeti Verma Shiva Badrhan Vitika Chauhan Mukesh Bhakat Tirtha Kumar Datta Rakesh Kumar Animal Genomics Laboratory Animal Biotechnology DivisionICAR-National Dairy Research InstituteKarnalHaryanaIndia NBGC Laboratory National Bureau of Animal Genetics ResourcesKarnalHaryanaIndia Artificial Breeding Research Centre LPM DivisionICAR-National Dairy Research InstituteKarnalHaryanaIndia ICAR-Central Institute of Research On Goat MakhdoomMathuraUttar PradeshIndia ICAR-Central Institute for Research On Buffaloes HisarHaryanaIndia

Backgroud Before fertilization,spermatozoa undergo a crucial maturation step called capacitation,which is a unique event regulates the sperm’s ability for successful *** capacitation process takes place as the spermatozoa pass through the female reproductive tract(FRT).Dihydrolipoamide dehydrogenase(DLD)protein is a post-pyruvate metabolic enzyme,exhibiting reactive oxygen species(ROS)production which causes ***,other vital functions of DLD in buffalo spermatozoa are hyperactivation and acrosome *** produces the optimum amount of ROS required to induce capacitation process in *** on physiological or patho-physiological conditions,DLD can either enhance or attenuate the production of reactive oxygen species(ROS).Aim of this study was to investigate whether changes in the production of ROS in sperm cells can impact their ability to fertilize by triggering the capacitation and acrosome *** In this study,abundance of DLD protein was quantified between high(n=5)and low fertile bull(n=5)*** was found that compared to high-fertile(HF)bulls,low-fertile(LF)bulls exhibited significantly(pptimised the MICA concentration to inhibit DLD function,spermatozoa were treated with MICA in time(0,1,2,3,4,and 5 h)and concentrations(1,2.5,5,and 10 mmol/L)dependent *** DLD inhibition was found to be at 4 h in 10 mmol/L MICA concentration,which was used for further exper-imentation in HF and *** on DLD inhibition it was seen that LF bull spermatozoa exhibited significantly(pproduction and acrosome reaction in comparison to the HF bull *** kinematic parameters of the spermatozoa such as percent total motility,velocity parameters(VCL,VSL,and VAp)and other parameters(BCF,STR,and LIN)were also decreased in MICA treated spermatozoa in comparison to the control(capacitated)*** The present study provides an initial

关键词： Acrosome reaction Capacitation High fertile bull Low fertile bull protein Reactive oxygen species Spermatozoa

Utilization of alkali-activated copper slag as binder in concrete

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Frontiers of Structural and Civil Engineering 2021年第3期15卷 773-780页

作者： Jagmeet singh S p singh Department of Civil Engineering Dr.B R Ambedkar National Institute of TechnologyJalandhar144011India

This study was focused on developing concrete using alkali-activated copper slag(AACS)as a *** properties of alkali-activated copper slag concrete(AACSC)were compared with portland cement concrete(pCC).Different AACSC mixes were prepared with varying Na_(2)O dosage(6%and 8%of the binder by weight)and curing *** products in AACSC were retrieved using Fourier-transform infrared spectroscopy(FTIR)and X-ray powder diffraction(XRD)*** test results indicate that the workability of AACSC was lesser than that of *** AACSC mix with 6%Na_(2)O dosage has exhibited similar mechanical properties as that of *** mechanical properties of AACSC were higher than pCC when 8%of Na_(2)O dosage was *** curing was effective to upgrade the strength properties of AACSC at an early age of curing,but at a later age mechanical properties of ambient cured and heat-cured AACSC were *** hydration products of AACSC were not identified in XRD patterns,whereas,in FTIR spectra of AACSC some alkali-activated reaction products were *** AACSC mixes were found to be more sustainable than *** has been concluded that AACSC can be produced similarly to that of pCC and ambient curing is sufficient.

关键词： binder concrete mechanical properties mineralogy workability

Study of temporal and spectral characteristics of the X-ray emission from solar flares

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Research in Astronomy and Astrophysics 2018年第10期18卷 33-48页

作者： Veena Choithani Rajmal Jain Arun K.Awasthi Geetanjali singh Sneha Chaudhari som Kumar Sharma Dept.of physics Sh.M.M.Patel Institute of Sciences&ResearchKadi Sarva VishwavidyalayaGandhinagar 382015India CAS Key Laboratory of Geospace Environment Department of Geophysics and Planetary SciencesUniversity ofScience and Technology of ChinaHefei 230026China physical Research Laboratory NavrangpuraAhmedabad 380009India

Temporal and spectral characteristics of X-ray emission from 60 flares of intensity ≥C class observed by the Solar X-ray Spectrometer （SOXS） during 2003-2011 are presented. We analyze the X-ray emission observed in four and three energy bands by the Si and Cadmium-Zinc-Telluride （CZT） detectors, respectively. The number of peaks in the intensity profile of the flares varies between 1 and 3. We find moderate correlation （R ~=0.2） between the rise time and the peak flux of the first peak of the flare irrespective of energy band, which is indicative of its energy-independent nature. Moreover, the magnetic field complexity of the flaring region is found to be highly anti-correlated （R = 0.61） with the rise time of the flares while positively correlated （R = 0.28） with the peak flux of the flare. The time delay between the peak of the X-ray emission in a given energy band and that in 25-30keV decreases with increasing energy, suggesting conduction cooling is dominant in the lower energies. Analysis of 340 spectra from 14 flares reveals that the peak of differential emission measure （DEM） evolution is delayed by 60-360 s relative to that of the temperature, and this time delay is inversely proportional to the peak flux of the flare. We conclude that temporal and intensity characteristics of flares are dependent on energy as well as the magnetic field configuration of the active region.

关键词： Sun X-rays, gamma rays - Sun magnetic fields - Sun flares - Sun corona

CaMoO_4:Dy^(3+),K^+ near White Light Emitting phosphor:Structural,Optical and Dielectric properties

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Journal of Materials Science & Technology 2013年第7期29卷 633-638页

作者： S.K.Sharma S.Dutta S.som p.S.Mandal Department of Applied physics Indian School of MinesDhanbad 826004India

Undoped, Dy^3＋ doped and Dy^3＋, K^＋ codoped calcium molybdate phosphors have been synthesized by solid-state reaction method. X-ray diffraction studies reveal the tetragonal structure of the prepared phosphors having crystallite size 15-50 nm. Scanning electron microscopy （SEM） studies reveal the morphology and crystallite size of the prepared phosphors. photoluminescence studies indicate that there are blue and yellow emissions at 489 and 576 nm, respectively corresponding to Dy^3＋ ion. The introduction of K＋ ion significantly influences the blue and yellow emissions which causes the near white light emission from this codoped phosphor. The intense absorption peak of the codoped phosphor at 210 nm is attributed to the band gap and a shoulder at 240 nm appears due to charge transfer from oxygen ions to neighbouring molybdenum ions. The band gap of the codoped phosphor is calculated as 5.5 eV from the absorption studies. The dielectric properties such as permittivity and dielectric loss are studied as a function of *** The authors are thankful to the Department of Science and Technology, New Delhi （Government of India） for funding this work under the project SR/FTp/pS-087/2010.

关键词： X-ray diffraction photoluminescence Absorption Dielectric