Results 21 to 30 of about 33,732 (253)
Molecules, 2023 The present study investigates four iron(II/III) porphyrazines with extending pyrrolyl peripheral substituents to understand the impact of introduced phenyl rings on the macrocycle’s electrochemical and spectroelectrochemical properties as well as their ...
Tomasz Koczorowski, Tomasz Rębiś
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Recent Progress in Porous Fused Aromatic Networks and Their Applications
Small Science, 2021 Porous materials are ubiquitous in nature and play central roles in ecosystems and human life. Porous fused aromatic networks (P‐FANs) are emerging as a new class of porous organic materials, which can be precisely constructed from organic precursors via
Ishfaq Ahmad +2 more
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Bioactive Materials, 2023 Arterial vasospasm after microsurgery can cause severe obstruction of blood flow manifested as low tissue temperature, leading to tissue necrosis. The timely discovery and synchronized treatment become pivotal.
Binfan Zhao +11 more
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A generalization of reflexive rings [PDF]
Mathematica BohemicaWe introduce a class of rings which is a generalization of reflexive rings and $J$-reversible rings. Let $R$ be a ring with identity and $J(R)$ denote the Jacobson radical of $R$.
Mete Burak Çalcı +2 more
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Directed zero-divisor graph and skew power series rings [PDF]
Transactions on Combinatorics, 2018 Let $R$ be an associative ring with identity and $Z^{\ast}(R)$ be its set of non-zero zero-divisors. Zero-divisor graphs of rings are well represented in the literature of commutative and non-commutative rings. The directed zero-divisor graph of $R$
Ebrahim Hashemi +2 more
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On a Generalized Semicommutative Ring
Tikrit Journal of Pure Science, 2019 Let R be a ring with identity. In this paper, we introduce some new results in a class of rings which refers to generalization of semicommutative rings called Q-semicommutative rings whenever x2=0 implies xRx=0, for any a ∈R [7]. They study investigates
Mustafa D. AL-Obaidi, Sinan O. AL-Salihi
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DNA codes over finite local Frobenius non-chain rings of length 5 and nilpotency index 4
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2022 A one to one correspondence between the elements of a finite local Frobenius non-chain ring of length 5 and nilpotency index 4, and k-tuples of DNA codewords is established.
Castillo-Guillén C. A. +1 more
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Template-Free Self-Assembly of Two-Dimensional Polymers into Nano/Microstructured Materials
Molecules, 2021 In the past few decades, enormous efforts have been made to synthesize covalent polymer nano/microstructured materials with specific morphologies, due to the relationship between their structures and functions.
Shengda Liu +6 more
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A novel air core electromagnetic fault current limiter with rotational motion
IET Electric Power Applications, 2023 The authors deal with design and analysis of an air‐core electromagnetic fault current limiter (FCL) with rotary motion. The proposed device is characterised by a simple structure, fast operating speed and reversible operation. It consists of two movable
Seyed Amin Fazljoo +2 more
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Minimal reversible nonsymmetric rings [PDF]
Journal of Pure and Applied Algebra, 2019 Marks showed that $\mathbb{F}_2Q_8$, the $\mathbb{F}_2$ group algebra over the quaternion group, is a reversible nonsymmetric ring, then questioned whether or not this ring is minimal with respect to cardinality. In this work, it is shown that the cardinality of a minimal reversible nonsymmetric ring is indeed 256.
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