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Chinese Journal of Chemical Engineering 2021年第6期34卷 198-207页

作者： Sunita Malik Poonam Jangra Darolia S.k.Garg V.k.Sharma Department of Chemistry Maharshi Dayanand UniversityRohtakHaryanaIndia J.C.Bose University of Science and Technology YMCAFaridabadHaryanaIndia

The present work is focusing on the synthesization and physico-chemical properties of Jatropha curcas biodiesel with diesel and *** densities of binary diesel(2)+1-alkanols(C_(3) or C_(4))(3)and ternary Jatropha curcas biodiesel(1)+diesel(2)+1-alkanols(C_(3)or C_(4))(3)blends have been reported over full range of composition at temperatures within range 288.15 to 313.15 *** densities of Jatropha curcas biodiesel(1)+diesel or 1-alkanols(C_(3) or C_(4))(2)blends have been measured at 313.15 *** molar volumes,V^E,V^E_(123)of binary and ternary blends were calculated from the measured data and the derived properties were correlated to composition using Redlich-kister equation.A reasonable agreement was found between the measured and estimated ***,densities and excess molar volumes data were reasoned to discuss molecular interactions taking into consideration effect of composition and temperature.

关键词： Jatropha curcas biodiesel Diesel Alcohols Blends Density Excess molar volumes

Conditional Probability on the kpka's D-posets

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Acta Mathematica Sinica,English Series 2012年第11期28卷 2197-2204页

作者： karol SAMUELCÍk Ivana HOLLÁ Department of Mathematics Faculty of Natural SciencesMatej Bel University

kopka＇s D-poset is a very important notion in quantum structures. In this paper the conditional probability on the kopka＇s D-posets is studied. The notion of conditional probability is introduced and the basic prope... 详细信息

关键词： kopka's D-posers conditional probability on the kopka's D-posers

Effect of monovalent charge compensators on the photoluminescence properties of Ca_(3)(PO_(4))_(2):Tb^(3+),A^(+)(A=Li,Na,k)phosphors

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Journal of Materials Science & Technology 2021年第23期82卷 187-196页

作者： G.W.Jung k.Park Faculty of Nanotechnology and Advanced Materials Engineering Sejong UniversitySeoul05006Republic of Korea

Ca_(3-x)(PO_(4))_(2):xTb^(3+)(0.2≤x≤0.4),Ca_(2.3)(PO_(4))_(2):0.35 Tb^(3+),0.35 A^(+)(A=Li,Na,k),and Ca_(2.3)(PO_(4))_(2):0.35 Tb^(3+),yLi^(+)(0.35≤y≤0.455)phosphors were prepared by solid-state *** the prepared phosphors formed a rhombohedral unit cell with the R3c space *** improve the photoluminescence(PL)properties of the Ca_(2.65)(PO_(4))_(2):0.35 Tb^(3+)phosphor,monovalent charge compensators such as Li^(+),NA^(+),and k^(+)were added to the Ca_(2.65)(PO_(4))_(2):0.35 Tb^(3+)*** charge compensators acted as fluxes,so they improved the *** excitation and emission properties were significantly improved through the incorporation of charge *** particular,among the charge compensators,Li^(+)ion substantially enhanced the emission intensity and color ***,considering the evaporation of Li_(2)CO_(3)during the annealing process,we optimized the concentration of Li^(+)charge compensator to enhance its PL ***,the green emission intensity of the Ca_(2.3)(PO_(4))_(2):0.35 Tb^(3+),0.385 Li^(+)phosphor was 260%higher than that of the Ca_(2.65)(PO_(4))_(2):0.35 Tb^(3+)*** believe that the effect of charge compensators on the PL properties and the optimum concentration of Li^(+)cha rge compensator are useful for the design of phosphors in light-emitting diodes.

关键词： Optical properties Ca_(3)(PO_(4))_(2) Emission Excitation Charge compensator

Ideal-Based k-Zero-Divisor Hypergraph of Commutative Rings

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Algebra Colloquium 2021年第4期28卷 655-672页

作者： k.Selvakumar M.Subajini Department of Mathematics Manonmaniam Sundaranar University Tirunelveli 627012Tamil NaduIndia

Let R be a commutative ring,I an ideal of R and k≥2 a fixed *** ideal-based k-zero-divisor hypergraph HkI(R)of R has vertex set ZI(R,k),the set of all ideal-based k-zero-divisors of R,and for distinct elements x1,x2,…,xk in ZI(R,k),the set{x1,x2,…,xk}is an edge in HkI(R)if and only if x1x2…xk∈I and the product of the elements of any(k-1)-subset of{x1,x2,…,xk}is not in *** this paper,we show that H3I(R)is connected with diameter at most 4 provided that x^(2)(∈)I for all ideal-based 3-zero-divisor ***,we find the chromatic number of H3(R)when R is a product of finite ***,we find some necessary conditions for a finite ring R and a nonzero ideal I of R to have H3I(R)planar.

关键词： hypergraph zero-divisor graph linear local ring k-prime ideal

Entropy squeezing and atomic inversion in the k-photon Jaynes–Cummings model in the presence of the Stark shift and a kerr medium:A full nonlinear approach

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Chinese Physics B 2014年第7期23卷 417-428页

作者： H R Baghshahi M k Tavassoly A Behjat Atomic and Molecular Group Faculty of PhysicsYazd University The Laboratory of Quantum Information Processing Yazd University Department of Physics Faculty of ScienceVali-e-Asr University of Rafsanjan Photonics Research Group Engineering Research CenterYazd University

The interaction between a two-level atom and a single-mode field in the k-photon Jaynes-Cummings model （JCM） in the presence of the Stark shift and a kerr medium is studied. All terms in the Hamiltonian, such as the single-mode field, its interaction with the atom, the contribution of the Stark shift and the kerr medium effects are considered to be f-deformed. In particular, the effect of the initial state of the radiation field on the dynamical evolution of some physical properties such as atomic inversion and entropy squeezing are investigated by considering different initial field states （coherent, squeezed and thermal states）.

关键词： Jaynes-Cummings model entropy squeezing atomic inversion intensity-dependent coupling

Structural and mass transport properties of liquid ytterbium in the temperature range 1123 k–1473 k

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Chinese Physics B 2023年第6期32卷 481-488页

作者： D D Satikunvar N k Bhatt B Y Thakore Department of Physics Sardar Patel UniversityVallabh VidyanagarGujarat 388120India Department of Physics Maharaja Krishnakumarsinhji Bhavnagar UniversityBhavnagarGujarat 364001India

We have studied the structural and atomic transport properties of liquid f-shell Yb in the temperature range 1123 k–1473 k. Pair interactions between atoms are derived using a local pseudopotential. The potential parameters are fitted to the phonon dispersion curve at room temperature. The local pseudopotential used in the present study is computationally more efficient with only three parameters, and it is found to be transferable to the liquid phase without changing the *** the various computed properties agree with reported theoretical and experimental findings, the adopted fitting scheme is justified. As a significant outcome of the study, we find that(i) the melting in Yb is governed by the Lindemann's law,(ii)the mass transport mechanism obeys the Arrhenius law,(iii) the role of the three-particle correlation function in deriving the velocity autocorrelation function is small,(iv) the mean-square atomic displacement is more sensitive to the choice of interaction potential than the other bulk properties, and(v) liquid Yb does not show liquid–liquid phase transition within the studied temperature range. Further, due to the good description of the structural and mass transport properties, we propose that Yb remains divalent at reduced density.

关键词： transport properties pseudopotential single-particle dynamics ytterbium

Hot Corrosion Behavior of Friction Welded AISI 4140 and AISI 304 in k_2SO-60% NaCl Mixture

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Journal of Materials Science & Technology 2012年第10期28卷 895-904页

作者： N.Arivazhagan k.Senthilkumaran S.Narayanan k.Devendranath Ramkumar S.Surendra S.Prakash School of Mechanical and Building Sciences VIT University Department of Metallurgical and Materials Engineering Indian Institute of Technology Roorkee

Understanding the behavior of weldment at elevated temperatures and especially the corrosion behavior has become an object of scientific investigation recently. Investigation has been carried out on friction welded AISI 4140 and AISI 304 in molten salt of k2SO4-60% NaCI environment at 550, 600 and 650 ℃ under cyclic condition. The resulted oxide scales in the weldment have been characterized systematically by surface analytical techniques. From the results of the experiments~ it is observed that the scale thickness on low alloy steel side was higher than that on stainless steel side. Furthermore, weld interface has been found to be more susceptible to degradation than base metals due to inter diffusion of element across the interface and the formation of intermetallic compound. The influences of welding parameters and the temperature of exposure on the hot corrosion behavior of the weldment were discussed in this paper.

关键词： Friction Welding Dissimilar metals Hot corrosion

Network and plage indices from kodaikanal Ca-k data

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Research in Astronomy and Astrophysics 2014年第2期14卷 229-232页

作者： k.P.Raju Jagdev Singh Indian Institute of Astrophysics

The Ca II k filtergrams from kodaikanal Solar Observatory have been used to study solar activity. The images are dominated by the chromospheric network and plages. Programs have been developed to obtain the network and plage indices from the daily images as functions of solar latitude and time. Preliminary results from the analysis are reported here. The network and plage indices were found to follow the sunspot cycle. A secondary peak is found during the period of declining activity in both the indices. A comparison of network indices from the northern and the southern hemispheres shows that the former is more active than the latter. However such an asymmetry is not clearly seen in the plage index.

关键词： Sun chromosphere

A histone tale that enCOMPASSes pausing:new insights into the functional repertoire of H3k4me3

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Signal Transduction and Targeted Therapy 2023年第8期8卷 3555-3557页

作者： Thomas k.Albert kornelius kerl Department of Pediatric Hematology and Oncology University Children’s Hospital MuensterMuensterGermany

A recently published study in Nature provides compelling evidence for the involvement of the histone H3k4me3 modification in regulating RNA polymerase II(Pol II)pause-release and elongation.1 The expansion of the functional repertoire of this active chromatin mark and the elucidation of the molecular mechanisms behind it represents a major advance for the field,not least because the epigenetic factors involved are linked to a wide range of human *** term epigenetics derives from the Greek prefix“epi”and describes an inheritable regulatory state that manifests itself beyond the mere genetic information encoded in the DNA.

关键词： involvement functional insight

First Evidence of Lamprophyric Magmatism from the konya Region, Turkey:a Genetic Link to High-k Volcanism

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Acta Geologica Sinica(English Edition) 2013年第6期87卷 1617-1629页

作者： kürsad ASAN M. Ali ERTüRk Seluk University Department of Geological Engineering Frat University Department of Geological Engineering

In the vicinity of konya （Turkey）,mafic,micro-porphyritic sub-volcanic rocks intrude into the Mesozoic units,which represents the only example of such a rock type in the region.40Ar/39Ar dating of two whole rock samples from the sub-volcanics gave ages of 13.72±0.13 and 12.40±0.11 Ma,suggesting temporal association to the Late Miocene-Pliocene high-k calc-alkaline volcanism in the *** mineral chemistry and geochemical data permit us to classify the rocks as ＂minette＂ *** include diopside and phlogopite phenocrysts in a microcrystalline groundmass composed of sanidine,phlogopite,diopside and *** and ocelli-like globular structures occur commonly in the *** terms of major elements,the lamprophyres are calcalkaline,and potassic to ultrapotassic *** the lamprophyres display strong enrichments in LILE （Rb,Ba,k,Sr）,radiogenic elements （Th,U） and LREE （La,Ce） and prominent negative Nb,Ta,and Ti anomalies on primordial mantle-normalized trace element *** data suggest that the lamprophyres and high-k calc-alkaline rocks in the region derived from a subduction-modified lithospheric mantle source affected by different metasomatic *** magmatism sourced phlogopite-bearing veins generated by sediment-related metasomatism via subduction,but high-k calc-alkaline magmas are possibly derived from a mantle source affected by fluid-rich metasomatism.

关键词： Turkey konya calc-alkaline lamprophyre minette metasomatism