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A new route to weak force sensing beyond sQL:squeezed magnons in cavity magnomechanics

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science China(Physics,Mechanics & Astronomy) 2024年第10期67卷 166-167页

作者： s.k.Özdemir Department of Engineering science and Mechanics and Materials Research Institute(MRI)The Pennsylvania State UniversityUniversity ParkPA 16802USA

Quantum mechanics imposes limits on measurement accuracy through quantum noise which typically has two components:First is the shot noise originating from vacuum fluctuations and referred to as the imprecision *** is ... 详细信息

关键词： quantum typically vacuum

Effects of sr^(2+) substitution on the structural, dielectric, and piezoelectric properties of PZT-PMN ceramics

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International Journal of Minerals,Metallurgy and Materials 2014年第2期21卷 175-180页

作者： Arvind kumar s.k. Mishra Research and Technology Development Centre Sharda University

This study described the structural, dielectric, and piezoelectric behavior of Pb1-xsrx[（Zr0.52Ti0.48）0.95（Mn1/3Nb2/3）0.05]O3 ceramics （PsZT-PMN, x=0, 0.025, 0.050, and 0.075）, prepared by a semi-wet route. X-ray diffraction, dielectric, and piezoelectric investigations were carried out to analyze the crystal structure. The relative dielectric constant and dielectric loss were both calculated as the functions of temperature. The room-temperature dielectric constant reaches a maximum for a sr2＋-modified PZT-PMN ceramic with an x value of 0.050, which corresponds to the morphotropic phase boundary （MPB）. Raman spectroscopy studies also confirm the existence of this MPB for x=0.050. The piezoelectric strain coefficients （d33） value shows a maximum response for this composition. In addition, the phase transition temperature decreases significantly when the sr2＋concentration increases in the PZT-PMN ceramics.

关键词： ceramic materials strontium substitution structural properties dielectric properties piezoelectricity

Therapeutic methods for diarrhea in children

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World Journal of Gastroenterology 2000年第4期6卷 497-500页

作者： s.k. Bhattacharya Director National Institute of Cholera and Enteric DiseasesP-33CIT Road.Scheme XMBeliaghataCalcutta 700010INDIA

DEFINITIONAcute diarrhoea is defined as passage of loose or waterystools at least three times in a 24 h *** loosestools contain blood,it is called bloody diarrhoea(dysentery).It is the consistency of the stools which ismost important rather than the ***-fed babiesoften pass'pasty'stools frequently which is not *** raother can often tell accurately whether child hasdiarrhoea or not.

关键词： diarrhea infantile/therapy dehydration antibiotics infusion intravenous water-electrolyte balance antidiarrheals nutritional requirements

Nucleoside modified mRNA-lipid nanoparticles as a new delivery platform for the repair of the injured spinal cord

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Neural Regeneration Research 2025年第8期20卷 2311-2312页

作者： krisztián Pajer Tamás Bellák Antal Nógrádi Department of Anatomy Histology and EmbryologyAlbert Szent-Györgyi Medical SchoolUniversity of SzegedSzegedHungary

spinal cord injury and treatment opportunities:The adult mammalian spinal cord has a very limited capacity for spontaneous regeneration due to various intrinsic molecular and cellular *** the spinal cord neurons have the capacity to regenerate their axons,the expression of growth inhibitory factors,lack or suppression of proper guidance cues,and profound inflammatory responses do not permit successful regeneration(khyeam et al.,2021).

关键词： injured capacity modified

Combustion synthesis and luminescence characteristic of rare earth activated LiCaBO_3

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Journal of Rare Earths 2012年第10期30卷 1005-1008页

作者： N.s. Bajaj s.k. Omanwar Department of Physics SGB Amravati University Amravati-444602 (M.S.)

Lithium calcium borate （LiCaBO3） polycrystalline thermoluminescence （TL） phosphor doped with rare earth （Tb3＋ and Dy3＋） elements was synthesized by novel solution combustion synthesis. The reaction produced very stable crystalline LiCaBO3：D（D=Tb3＋ and Dy3＋） phosphors. These rare earth doped phosphors material showed maximum TL sensitivity with favorable glow curve shape. TL glow curve of X-ray irradiated that LiCaBO3：Tb3＋ and LiCaBO3：Dy3＋ samples showed two major well-separated glow peaks. The TL sensitivity of these phosphors to X-ray radiation was comparable with that of TLD-100（Harshaw）. Photoluminescence spectra of LiCaBO3：Tb3＋ and LiCaBO3：Dy3＋ showed the characteristic Tb3＋ and Dy3＋ peaks respectively. TL response to X-ray radiation dose was linear up to 25 Gy.

关键词： luminescence LiCaBO3 combustion synthesis rare earths kinetics

synthesis and luminescence characteristics of terbium(Ⅲ) activated NasrBO_3

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Journal of Rare Earths 2012年第9期30卷 856-859页

作者： P.A. Nagpure s.k. Omanwar Department of Physics SGB Amravati University Amravati-444602 (M.S.) India

The thermoluminescence （TL） and photohmainescence （PL） properties of the phosphor NasrBO3：Tb3＋ were reported and discussed. The combustion technique was used for the synthesis of polycrystalline samples of NasrBO3：Th3＋. The TL glow curve of the compound had a simple structure with a single peak at 434 k. TL sensitivity of the phosphor was found to be more than that of （LiF：Mg,Cu,P）. The TL glow curve was studied as a function of concentration of dopant and dose of gamma ray irradiation. The kinetic parameters of the thermolumines- cence of NasrBO3： Tb3＋were calculated employing the peak shape method. The photoluminescence （PL） properties of Tb3＋ doped in Nas- rBO3 were studied over the 200-400 nm excitation range. The excitation spectra of NasrBO3：Tb3＋ consisted of single narrow band peaking at about 236 nm. The emission spectra monitored at 236 nm excitation consisted of a series of sharp lines peaking at 489, 544, 586 and 622 nm corresponding to the 5D4→7Fj （j=3,4,5,6） transitions within the 4f8 configurations of Tb3＋.

关键词： thermoluminescence photoluminescence terbium NasrBO3 combustion synthesis rare earths

Revisiting cerebral endothelial cells in Alzheimer’s disease

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Neural Regeneration Research 2025年第10期20卷 2911-2912页

作者： Amira s.Hanafy Department of Neurosurgery University Hospital BonnBonnGermany

Alzheimer’s disease(AD)is the most common neurodegenerative disorder characterized by slow and progressive decline of cognitive and memory *** only approximately 5%of the cases,AD is familial,as often predisposed by genetic mutations(Hoogmartens et al.,2021),while sporadic AD accounts for approximately 95%of the *** amyloid cascade hypothesis is one of the fundamental hypotheses put out to explain AD pathogenesis as dysregulated homeostasis of amyloid-β(Aβ)peptides that leads to the accumulation of Aβplaques in the parenchyma,an anatomical hallmark of AD.

关键词： Alzheimer Aβ cerebral

A study of the Number of Roots of xk =g in a Finite Group via Its Frobenius-schur Indicators

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Algebra Colloquium 2017年第1期24卷 93-108页

作者： s.k. Prajapati R. sarma Department of Mathematics Indian Institute of Technology Delhi Hauz Khas New Delhi 110016 India

Let G be a finite group. For k ∈ N, X ∈ Irr（G）, define c（k）x ：= 1/G ∑g∈G x（gk）. This is called the k-th Frobenius-schur indicator of X. In this article we study the Probenius-schur indicators for Frobenius groups, p-groups, semidihedral groups and mod- ular p-groups. Further, we use this to study the function ζ kG（g） which counts the number of roots of xk = g in a finite group G.

关键词： Frobenius-schur indicators p-groups group characters

Assessing temporal variation of coloured dissolved organic matter in the coastal waters of south Eastern Arabian sea

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Acta Oceanologica sinica 2020年第1期39卷 102-109页

作者： P Minu V P souda s.k.baliarsingh R M Dwivedi Y Ali P M Ashraf ICAR-Central Institute of Fisheries Technology Matsyapuri P.O.Cochin 682029India Indian National Centre for Ocean Information services(INCOIs) Hyderabad 500090India Department of Geology Aligarh Muslim UniversityAligarh 202001India

Coloured dissolved organic matter(CDOM) plays a major role in marine photochemical and biological processes and its optical properties are known to affect the underwater light penetration. This paper highlights in situ optical estimation and satellite retrieval of CDOM in deciphering its temporal variations in coastal waters of the south Eastern Arabian sea. The study accentuated the source of CDOM as terrigenous origin during monsoon, of in situ productions during pre-monsoon and during post-monsoon of autochthonous-allocthonous origin. The matchup analysis for in situ and MODIs Aqua retrieved Adg443 exhibited bias which decreased by incorporating the seasonal component. The study also identified degrading bloom of Noctiluca scintillans as the source for exceptionally high CDOM in the area during January and February. The study demands to incorporate seasonal components and phytoplankton abundance while assessing the performance of CDOM algorithms in optically complex coastal waters.

关键词： CDOM absorption chlorophyll MODIs Arabian sea