Results 21 to 30 of about 557 (225)
Advanced Functional Materials, EarlyView.A nanofiber/graphene hybrid yarn with 1D oriented nanoscale channel is constructed via bath electrospinning followed by a functionalization process, yielding exceptional anti‐swelling and weaving abilities. When configured into a waterproof fabric through series‐parallel connection of 62‐cm yarns, an output power of 31.96 µW is achieved, which could ...
Yuman Zhou +6 more
wiley +1 more source
A lattice characterization of groups with finite torsion-free rank
, 2006 A group G has finite torsion-free rank if it has a series of finite length whose factors are either infinite cyclic or periodic. A lattice-theoretic characterization of groups with finite torsion-free rank is obtained; it follows in particular that the class of such groups is invariant under projectivities.
De Luca, R., DE GIOVANNI, FRANCESCO
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Stochastically Generated Digital Twins of 3D Solid‐State Electrolyte Architecture
Advanced Functional Materials, EarlyView.Digital Twins of random porous tape‐cast solid‐state battery architectures across µm to mm feature sizes from FIB‐SEM to X‐Ray µCT, respectively. Abstract Solid‐state lithium batteries (SSBs) have the potential to overcome conventional Li‐ion batteries in performance and safety.
Jonathan O'Neill +3 more
wiley +1 more source
Design and Applications of Multi‐Frequency Programmable Metamaterials for Adaptive Stealth
Advanced Functional Materials, EarlyView.This article provides a comprehensive overview of metamaterials, including their fundamental principles, properties, synthesis techniques, and applications in stealth, as well as their challenges and future prospects. It covers topics that are more advanced than those typically discussed in existing review articles, while still being closely connected ...
Jonathan Tersur Orasugh +4 more
wiley +1 more source
The classification problem for torsion-free abelian groups of finite rank [PDF]
Journal of the American Mathematical Society, 2002 We prove that for each n ≥ 1 n \geq 1 , the classification problem for torsion-free abelian groups of rank n + 1 n+1 is not Borel reducible to that for torsion-free abelian groups of rank n n .
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Advanced Functional Materials, EarlyView.This review explores functional and responsive materials for triboelectric nanogenerators (TENGs) in sustainable smart agriculture. It examines how particulate contamination and dirt affect charge transfer and efficiency. Environmental challenges and strategies to enhance durability and responsiveness are outlined, including active functional layers ...
Rafael R. A. Silva +9 more
wiley +1 more source
Homomorphic images of completely decomposable finite rank torsion-free groups
Journal of Algebra, 1991 Let \(A=A_ 1\oplus\dots\oplus A_ n\) be an abelian group which is the direct sum of rank-1-groups. In this paper necessary and sufficient conditions are given such that every torsion free image of \(A\) is again completely decomposable. There is an algebraic weakening, namely that \(A/X\) is completely decomposable for all pure rank-1 subgroups \(X ...
H. Pat Goeters, William Ullery
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Inducing Chirality and Chiral Instabilities in Ferrogels with Homogenous Magnetic Fields
Advanced Functional Materials, EarlyView.By pre‐aligning magnetic particles into chains, significant chiral deformations are induced by fixing the base of a cylindrical actuator and applying a homogeneous magnetic field. Subsequent base rotation can drive the system into metastable states. Further rotation or reduction of field strength triggers a chiral instability, characterized by a switch
Francisco J. Vazquez‐Perez +4 more
wiley +1 more source
Le Matematiche, 2006 Suppose G is with finite torsion-free rank a coproduct of p-mixed countable abelian groups and F is a field with characteristic p such that the group algebras FG and FH are F -isomorphic for another group H . Then G and H are isomorphic.
Peter Danchev
doaj
Splitting mixed groups of torsion-free finite rank II [PDF]
Hokkaido Mathematical Journal, 2013 First we introduce the concept of QD-hulls in arbitrary abelian groups. Then we use the concept to give a new characterization of purifiable torsion-free finite rank subgroups of an arbitrary abelian group. Finally we use it to formulate a splitting criterion for mixed groups of torsion-free finite rank.
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