Results 51 to 60 of about 5,502,919 (295)

Guanosine‐Quadruplex Hydrogels as Dynamic, Mechanically Tunable and Ion Conductive 3D Scaffolds for Cell Culture Applications

Advanced Functional Materials, EarlyView.
Versatile guanosine‐quadruplex (GQ) hydrogels are developed as dynamic biomatrices for cell culture. These scaffolds are fabricated under mild aqueous conditions, present improved stability, tunable mechanical properties within physiological ranges; fibrillar, porous microstructure, ion conductivity, and cytocompatibility.
Neha Thakur, Minye Jin, Pavel Milkin, Deepa Negi, Carla Cofiño Fabres, Hubert Gojzewski, Leonid Ionov, Alla Synytska, Andries van der Meer, Robert Passier, Julieta I. Paez   +10 more
wiley   +1 more source

On Convex Univalent Functions with Convex Univalent Derivatives

Rocky Mountain Journal of Mathematics, 2005
The authors studied the functions \[ \sum_{k=0}^{\infty}a_{k}\dfrac{(1+z)^k}{k!}, \] for \(a_{0}\geq a_{1}\geq...\geq 0\). They showed that these functions are either constant or convex univalent in the unit disk \(D\). The work is inspired by \textit{T. J.
Ruscheweyh, Stephan, Salinas, Luis
openaire   +3 more sources

Dynamic Electrophoretic Assembly Coupled With Water‐Splitting‐Induced pH Control Enables Precision Ion Sieving Membranes

Advanced Materials, EarlyView.
A green, external‐catalyst‐free route grows defect‐free covalent organic framework membranes directly on ion‐exchange supports using an alternating electric field and in situ‐generated acid. Through a self‐regulating, self‐healing mechanism, the membranes achieve near‐complete, ultra‐fast separation of monovalent ions such as Li+, Na+, and K+, offering
Mohammad Hossein Jandaghian, Petric Marc Ruya, Ipek Ozyurt, Ali Atyabi, Samuel Eyley, Wim Thielemans, Alexander Volodin, Riccardo Alessandri, Xing Yang   +8 more
wiley   +1 more source

Quasi-Convolution Properties of Analytic Function Subclasses Defined by a Generalized Binomial Operator

UMYU Scientifica Journal
The study of analytic and univalent functions in the open unit disk has received significant attention in geometric function theory due to its vast applications across mathematics and other related disciplines.
Abdulhakeem Bolakale Bello, Kunle Oladeji Babalola, Gabriel Oluwamuyiwa Olupitan, Rofiat Adewumi Aderinoye-Rabiu, Azeez Ade Jimoh   +4 more
doaj   +1 more source

An exact estimate of the third Hankel determinants for functions inverse to convex functions

Математичні Студії, 2023
Invesigation of bounds for Hankel determinat of analytic univalent functions is prominent intrest of many researcher from early twenth century to study geometric properties.
B. Rath, K. S. Kumar, D. V. Krishna
doaj   +1 more source

Multi‐Li+ Coordination for Superior Room‐Temperature Ionic Conductivity in PEO Solid Electrolytes

Advanced Materials, EarlyView.
A phosphonate‐functionalized polycarboxylate ether (P‐PCE) is introduced into PEO electrolytes to induce multi‐Li+ ions coordination, which effectively dissociates lithium salts, liberates Li+ from the strong chelation by PEO chains, and promotes fast Li+ hopping between adjacent coordination sites. Simultaneously, this design establishes dynamic, high‐
Hengming Yan, Bowen Zhang, Xuefan Liu, Lu Wang, Cunlong Hu, Anran Sheng, Congcong Zhang, Linglong Kong, Zhenzhen Wu, Yulin Zhong, Sheng Liu, Shanqing Zhang   +11 more
wiley   +1 more source

Initial Coefficient Behavior of Bi-Univalent Functions Defined Through Bernoulli Polynomial Subordination

Mathematics
The study of coefficient problems for bi-univalent functions continues to play a central role in geometric function theory due to its analytical depth and wide range of applications.
Mohamed Illafe, Abdulmtalb Hussen, Feras Yousef   +2 more
doaj   +1 more source

Integral representations of univalent functions and singular measures

, 1990
In [5], T. MacGregor showed that not every univalent function has a proposed integral representation with respect to Borel measures on the unit circle. In this paper, we study the decomposition of measures which do give rise to univalent functions.
Robert J. Bass
core   +1 more source

Efficient in‐Plane Exciton Transport in a Discontinuous Layered Lead‐Bromide Perovskite

Advanced Materials, EarlyView.
A new class of two‐dimensional lead‐bromide perovskite based on monovalent 4‐aminomethylbenzoic acid cations is presented, featuring a discontinuous inorganic layer. Despite the discontinuous lattice, transient photoluminescence microscopy demonstrates efficient though strongly anisotropic in‐plane exciton transport.
Raquel Utrera‐Melero, Antonella Cutrupi, Ivan Rivilla, Davide Spirito, E. Carolina Sañudo, Juan Cabanillas‐González, Antonio I. Fernández‐Domínguez, Beatriz Martín‐García, Jose Sánchez Costa, Ferry Prins   +9 more
wiley   +1 more source

New Subclasses of Bi-Univalent Functions Associated with Exponential Functions and Fibonacci Numbers

مجلة بغداد للعلوم
Lewin discussed the class  of bi-univalent functions and obtained the bound for the second coefficient, Sakar and Wanas defined two new subclasses of bi-univalent functions and obtained upper bounds for the elementary coefficients |a2| and |a3| for ...
Majd Ayash, Hassan Baddour, Mohammad Ali, Abbas Kareem Wanas   +3 more
doaj   +1 more source