Results 21 to 30 of about 76,947 (261)

Chiroptical Properties and the Racemization of Pyrene and Tetrathiafulvalene-Substituted Allene: Substitution and Solvent Effects on Racemization in Tetrathiafulvalenylallene

open access: yesMolecules, 2014
Dissymmetric 1,3-diphenylallene derivative 3 connected with 4,5-bis(methyl-thio)tetrathiafulvalenyl and 1-pyrenyl substituents was prepared and characterized. The molecular structure was determined by X-ray crystallographic analysis.
Masashi Hasegawa   +5 more
doaj   +1 more source

Inequalities for the polar derivative of a polynomial [PDF]

open access: yesThe Journal of Analysis, 2020
Let P(z) be a polynomial of degree n having all its zeros in $$|z|\le 1$$ , then according to Turan (Compositio Mathematica 7:89–95, 2004) $$\begin{aligned} \max \limits _{|Z|=1}|P'(z)|\ge ...
M. H. Gulzar, B. A. Zargar, Rubia Akhter
openaire   +1 more source

Generalizations of Zygmund-type integral inequalities for the polar derivative of a complex polynomial

open access: yesJournal of Inequalities and Applications, 2020
Some Zygmund-type integral inequalities for the polar derivatives of complex polynomials, inspired by the classical Bernstein-type inequalities that relate the uniform norms of polynomials and their derivatives on the unit circle, are investigated.
Gradimir V. Milovanović, Abdullah Mir
doaj   +1 more source

BODIPY-based dye for no-wash live-cell staining and imaging

open access: yesBioTechniques, 2017
In nonpolar solvents, hydrophobic organic fluorophores often show bright fluorescence, whereas in polar media, they usually suffer from aggregation-caused quenching (ACQ).
Alexey A. Pakhomov   +7 more
doaj   +1 more source

On Extremal Properties for the Polar Derivative of Polynomials

open access: yesAnalysis in Theory and Applications, 2011
Summary: If \(p(z)\) is a polynomial of degree \(n\) having all its zeros on \(|z|=k\), \(k\leq 1\), then it is known that \[ \max\limits_{|z|=1}|p'(z)|\leq \frac n {k^{n-1}+k^n}\max\limits_{|z|=1}|p(z)|. \] In this paper, we generalize the above inequality by extending it to the polar derivative of a polynomial of the type \(p(z)=c_nz^n +\sum\limits ...
Dewan, K. K., Ahuja, Arty
openaire   +2 more sources

Deriving polarity from granularity

open access: yesSemantics and Linguistic Theory, 2021
In this paper, we present a way to unify Positive Polarity Items formed with some NP and minimizers, such as lift a finger. The connection is made via granularity properties of the two classes of polarity sensitive expressions. We begin with an observation in Strawson 1974 that the use of some NP involves an inference about the availability of a more ...
Goncharov, Julie, Wolf, Lavi
openaire   +2 more sources

Some Inequalities for the Polar Derivative of a Polynomial

open access: yesKragujevac Journal of Mathematics, 2003
Summary: Let \(P(z)\) be a polynomial of degree \(n\) which has no zeros in \(|z|
Gulzar, M. H.   +2 more
openaire   +2 more sources

Finite-size-effect on a very large length scale in NBT-based lead-free piezoelectrics [PDF]

open access: yesJournal of Advanced Dielectrics, 2019
Na0.5Bi0.5TiO3-based lead-free piezoelectrics are considered for potential replacement of the lead-based commercial piezoceramics in high-power transducer applications.
Anupam Mishra   +5 more
doaj   +1 more source

A new megastigmane, known porphyrinic and galloylated bioactive derivatives from the leaves of

open access: yesJournal of Chemical Research, 2022
Investigation of the non-polar (rich in chlorophyll) and polar fractions of the ethyl acetate extract of Gymnosporia senegalensis (Lam.) Loes. leaves led to the isolation of nine compounds, including one new megastigmane derivative, (3 R* ,5 S* ,6 R* ,7 ...
Simplice Jöel Tatsimo Ndendoung   +5 more
doaj   +1 more source

The polar and lateral flagella from Plesiomonas shigelloides are glycosylated with legionaminic acid

open access: yesFrontiers in Microbiology, 2015
Plesiomonas shigelloides is the unique member of the Enterobacteriaceae family able to produce polar flagella when grow in liquid medium and lateral flagella when grown in solid or semisolid media. In this study on P. shigelloides 302-73 strain, we found
Susana eMerino   +4 more
doaj   +1 more source

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