Results 11 to 20 of about 751 (134)

Quantitative Analysis of Polymers by MALDI‐TOF Mass Spectrometry: Correlation Between Signal Intensity and Arm Number. [PDF]

Journal of Mass Spectrometry, Volume 61, Issue 1, January 2026.
ABSTRACT The signal intensities of linear and star‐shaped poly(L‐lactides) (PLA) and poly (ethylene oxides) (PEO) were compared to determine the influence of the number of arms on the ionization in matrix‐assisted laser desorption/ionization time‐of‐flight (MALDI‐TOF) mass spectrometry. In this study, a variety of blends were prepared and investigated,
Mete‐Sungur Dalgic, Sourabh Kumar, Steffen M. Weidner   +2 more
wiley   +2 more sources

Label‐Free Molecular Characterization of Protein Aggregates in Differentiated Astrocytes [PDF]

Advanced Science, Volume 13, Issue 16, 18 March 2026.
Mid‐infrared photothermal microscopy enables label‐free structural, molecular, and functional imaging of protein aggregates in astrocyte cells. The processes of astrocytes differentiated on a nanomaterial interface are characterized by α‐helical signatures combined with enhanced interfacial thermal resistance properties, while the cell soma of non ...
Panagis D. Samolis, Chiara Lazzarini, Rahmetullah Durgun, Barbara Barile, Giorgia Conte, Tamara Posati, Marco Caprini, Grazia Paola Nicchia, Valentina Benfenati, Michelle Y. Sander   +9 more
wiley   +2 more sources

Sharp coefficient bounds for a class of symmetric starlike functions involving the balloon shape domain [PDF]

Heliyon
Recent research has extensively explored classes of starlike and convex functions across various domains. This study introduces a novel class of symmetric starlike functions with respect to symmetric points and associated with the balloon shape domain ...
Bilal Khan, Jianhua Gong, Muhammad Ghaffar Khan, Fairouz Tchier   +3 more
doaj   +2 more sources

Hankel and Toeplitz Determinants for q-Starlike Functions Involving a q-Analog Integral Operator and q-Exponential Function

Journal of Function Spaces
This article investigates the upper bounds of the second Hankel and Toeplitz determinants for a family of q-starlike functions defined by a q-analog integral operator, which is a more general form of the q-Srivastava-Attiya operator, and the q ...
Sarem H. Hadi, Maslina Darus, Rabha W. Ibrahim   +2 more
doaj   +2 more sources

Faber Polynomial Coefficient Estimates for Meromorphic Bi-Starlike Functions

International Journal of Mathematics and Mathematical Sciences, 2013
We consider meromorphic starlike univalent functions that are also bi-starlike and find Faber polynomial coefficient estimates for these types of functions. A function is said to be bi-starlike if both the function and its inverse are starlike univalent.
Samaneh G. Hamidi, Suzeini Abd Halim, Jay M. Jahangiri   +2 more
doaj   +1 more source

Research on Geometric Mappings in Complex Systems Analysis

Discrete Dynamics in Nature and Society, 2016
We mainly discuss the properties of a new subclass of starlike functions, namely, almost starlike functions of complex order λ, in one and several complex variables.
Yanyan Cui, Chaojun Wang, Sifeng Zhu
doaj   +1 more source

Certain Properties of Some Families of Generalized Starlike Functions with respect to q-Calculus

Abstract and Applied Analysis, 2016
By making use of the concept of q-calculus, various types of generalized starlike functions of order α were introduced and studied from different viewpoints.
Ben Wongsaijai, Nattakorn Sukantamala
doaj   +1 more source

Starlikness Associated with Cosine Hyperbolic Function

Mathematics, 2020
The main contribution of this article is to define a family of starlike functions associated with a cosine hyperbolic function. We investigate convolution conditions, integral preserving properties, and coefficient sufficiency criteria for this family ...
Abdullah Alotaibi, Muhammad Arif, Mohammed A. Alghamdi, Shehzad Hussain   +3 more
doaj   +1 more source

The Generalized Janowski Starlike and Close-to-Starlike Log-Harmonic Mappings

International Journal of Mathematics and Mathematical Sciences, 2011
Motivated by the success of the Janowski starlike function, we consider here closely related functions for log-harmonic mappings of the form 𝑓(𝑧)=𝑧ℎ(𝑧)𝑔(𝑧) defined on the open unit disc 𝑈.
Maisarah Haji Mohd, Maslina Darus
doaj   +1 more source

Differential inequalities for spirallike and strongly starlike functions

Advances in Difference Equations, 2021
In this paper, by using a technique of the first-order differential subordination, we find several sufficient conditions for an analytic function p such that p ( 0 ) = 1 $p(0)=1$ to satisfy Re { e i β p ( z ) } > γ $\operatorname{Re}\{ {\mathrm{e ...
Nak Eun Cho, Oh Sang Kwon, Young Jae Sim
doaj   +1 more source