In this study, we used classical and simple Sonogashira couplings to construct three 1,3,4-oxadiazole-linked conjugated microporous polymers (OXD-CMPs) through the reaction of 2,5-bis(4-bromophenyl)-1,3,4-oxadiazole (OXD-Br₂) as a common partner with the structurally diverse units of ethynyl triphenylamine, tetraphenylethene, and pyrene, respectively. We used several methods, both spectroscopic and microscopic, to characterize the three OXD-CMPs. Each OXD-CMP displayed a high thermal stability. The Py-OXD-CMP possessed pores having sizes in the range 1.20–2.25 nm and a high surface area (298 m² g^–1). These OXD-CMPs interacted with singled-walled carbon nanotubes (CNTs), stabilized through noncovalent π–π interactions, to afford OXD-CMP/CNT composites that were suitable for supercapacitor devices. Among our OXD-CMP/CNT composites, the Py-OXD-CMP/CNT composite offered a specific capacitance of 504 F g^–1 and a superior capacitance retention (91.1%) over 2000 cycles.

Conductive and porous nitrogen-rich materials have great potential as supercapacitor electrode materials. The exceptional efficiency of such compounds, however, is dependent on their larger surface area and the level of nitrogen doping. To address these issues, we synthesized a porous covalent triazine framework (An-CTFs) based on 9,10-dicyanoanthracene (An-CN) units through an ionothermal reaction in the presence of different molar ratios of molten zinc chloride (ZnCl₂) at 400 and 500 °C, yielding An-CTF-10-400, An-CTF-20-400, An-CTF-10-500, and An-CTF-20-500 microporous materials. According to N₂ adsorption–desorption analyses (BET), these An-CTFs produced exceptionally high specific surface areas ranging from 406–751 m²·g⁻¹. Furthermore, An-CTF-10-500 had a capacitance of 589 F·g⁻¹, remarkable cycle stability up to 5000 cycles, up to 95% capacity retention, and strong CO₂ adsorption capacity up to 5.65 mmol·g⁻¹ at 273 K. As a result, our An-CTFs are a good alternative for both electrochemical energy storage and CO₂ uptake.

In this paper, we obtain sufficient conditions for the existence of fixed points for a sequence of L-fuzzy mappings in a non-Archimedean ordered modified intuitionistic fuzzy metric space. We use contractive conditions of implicit relation. Further, as an application, we also generalize our usual contractive conditions into integral contractive conditions.

We report here a comparative study of the effects of La substituted Ca on (Bi, Pb):2212 and (Bi_, Pb):2223 superconductors with various La content (0.00 ≤ x ≤ 0.30). Regardless of the effects of La, it is evident that superconducting volume fraction, excess of oxygen, critical concentration for quenching superconductivity, Vickers hardness, anisotropy, interlayer coupling, critical magnetic fields, and critical current are higher for the 2212 series than the 2223. In contrast, orthorhombic distortion, c-parameter, crystallite diameter, doping distance , distance between two Cu-atoms, hole carrier/Cu ion, melting temperature T_m, critical temperature T_c, onset of diamagnetic T_cM , surface energy, elastic component, resistance pressure, and c-axis coherence length are higher for the 2223 series than the 2212. An inverse linear relationship between T_m and T_c is estimated for both series, and for RT BSCCO superconductors, the required T_m values should be 1048.03 ^oC for the 2223 series and 784.48 ^oC for the 2212. Surprisingly, the difference in temperature between zero resistivity and diamagnetic onset |T_cM-T_cR| for La = 0.30 samples is 30 K. In the critical field region (CFR) , the exponents of order parameters (OPD) are 2D, but their values are higher for the 2212 series than the 2223. Further, they became 3D as La increased to 0.30, due to the reduced effective length in highly substituted samples. Our results are discussed with the help of the differences in the physical parameters between the considered series. These findings reveal that the 2212 series is more suitable for applications that need higher hardness, and critical fields and currents. In contrast, the 2223 series is more suitable for research for higher T_c and altering plastic deformation. To our knowledge, the present systematic investigation may never have been reported elsewhere, which highlights the present work.

An approximation space plays a vital role in the accuracy of approximations of a subset of the universal set. The main goal of this paper is to develop new kinds of soft rough sets models by using the concept of near open sets, where the accuracy of approximations is enhanced significantly. Firstly, the concepts of near soft rough approximations, denoted by
“JSR-approximations” for each J ∈ {P, S, γ, α, β} are proposed as a generalization some previously introduced notions.
Then, their properties and relationships are disclosed. Comparisons among the proposed methods and the previous one are obtained. An algorithm has been given for decision-making problems. The proposed algorithm is tested on hypothetical data for the purpose of comparison with already existing methods.

Soft set theory is a theme of interest for many authors working in various areas because
of its rich potential for applications in many directions. it received the attention of the topologists who always seeking to generalize and apply the topological notions on dierent structures. To contribute to this research area, in this paper, we formulate new soft separation axioms, namely ttsoft Ti (i = 0; 1; 2; 3; 4) and tt-soft -regular spaces. They are defined using total belong and total non-belong relations with respect to ordinary points. This way of definition helps us to generalize existing comparable properties via general topology and to remove a strict condition of the shape of soft open and closed subsets of soft -regular spaces. With the help of examples, we show the
relationships between them as well as with soft Ti (i = 0; 1; 2; 3; 4) and soft -regular spaces. Also, we explore under what conditions they are kept between soft topological space and its parametric topological spaces. We characterize tt-soft T1 and tt-soft -regular spaces and give some conditions that guarantee the equivalence of tt-soft Ti (i = 0; 1; 2) and the equivalence of tt-soft Ti (i = 1; 2; 3).
Further, we investigate some interrelations of them and some soft topological notions such as soft compactness, product soft spaces and sum of soft topological spaces. In the end, we study the main properties of of -fixed soft point theorem.