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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

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

Volumetric and Viscometric Studies of 4-Aminobutyric Acid in Aqueous Solutions of Salbutamol Sulphate at 308.15, 313.15 and 318.15k

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Chinese Journal of Chemical Engineering 2009年第5期17卷 796-804页

作者： k. Rajagopal S.S. Jayabalakrishnan Departrnent of Physics Government College ofEngg Tirunelveli-627007 Tamil Nadu India Department of Physics P.S.R. Engg. College Sivakasi Tamil Nadu India

Density （ρ） and viscosity （η） measurements were carried out for 4-aminobutyric acid in 0.0041,0.0125 and 0.0207 mol·L-1 aqueous salbutamol sulphate at T=308.15,313.15 and *** measured values of density and viscosity were used to estimate some important parameters such as apparent molar volume Vφ,limiting apparent molar volume Vφ0,transfer volume △Vφ0,hydration number Hn,second derivative of infinite dilution of partial molar volume with temperature 2Vφ0/T2,viscosity B-coefficients,variation of B with temperature dB/dT,free energy of activation per mole of solvent △μ10＊ and solute △μ20＊,activation entropy △S20＊ and activation enthalpy △H20＊ of the amino *** parameters have been interpreted in terms of solute-solute and solute-solvent interactions and structure making/breaking ability of solutes in the given solution.

关键词： density standard partial molar volume hydration ntnZnber relative viscosity B-coefficient activation parameters

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

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

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