Materials Literature
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The concept of chemical rejuvenation posits the possibility of actively reducing the "chemical age" of a system through targeted interventions. This paper introduces and formalizes the Chemical Rejuvenation Principle (CRP), defining it as the reduction of a system's effective age, denoted as A(t+\tau) < A(t), where A(…
In order to improve operational characteristics of epoxy-diane adhesives they were modified with hydroxyl-terminal polydimethylsiloxane (PDMS) grafted by means of 3-aminopropyltriethoxysilane as a cross-linker. In this way, silicon-containing epoxy oligomers (SEO) with small additives of PDMS (0.1–5.0 pbw) and three s…
A gym bag under the desk revealed more than camping gear—it held the working woodworker's essential toolkit. David Ohnstad unpacks the hand planes, Japanese saws, chisels, and leather rolls that serious makers actually carry to every project. Full article: https://david-ohnstad.com/essential-hand-tool-kit-woodworking/
The structure, mechanical and electrical properties of Zr-based melt-spun Zr–(Al)–Ni–Cr–Ag alloys were investigated as a function of elemental composition. X-ray diffraction reveals the structural evolution from fully amorphous to nanocrystalline states, with the latter containing Zr2Ni “big-cube” (space group Fd3̄m,…
Methanol is a critical molecular marker for the early aging of oil-paper insulation, and its rapid detection is highly valuable for insulation condition assessment and the fault warning of power transformers. Widely used chromatographic methods require sophisticated pretreatment workflow and are not suitable for in si…
This paper proposes the Chemical Invariance Principle (CIP), a novel concept aimed at unifying disparate chemical reactions by identifying a fundamental, yet previously unrecognized, invariant. The CIP posits the existence of a chemical invariant, denoted as [Cchemical], which dictates the underlying similarity in dee…
ABSTRACT Enhancing the kinetics and mass transfer efficiency is the central issue in the research of the catalytic oxygen evolution reaction (OER). Here, an in situ hydrothermal transformation method for synthesizing ultra‐porous cobalt‐nickel silicate hydroxide (CNSH) with a layered double hydroxide (LDH) is demonstr…
Abstract Urban stormwater runoff is an important pathway for transporting microplastics (MPs) from urban environments to marine ecosystems. However, studies investigating how socio-spatial characteristics influence MP abundance and composition remain scarce, particularly in South America. This study evaluated the infl…
ABSTRACT Metal halide perovskites derive their remarkable optoelectronic properties from the combined effects of strong electron‐phonon coupling, exciton localization, and the dynamic stereochemical activity of n s 2 lone pairs. However, Ge (II)‐based perovskites typically exhibit static lone‐pair expression (LPE) and…
Source: G. R. Murray, ‘Note on the treatment of myxoedema by hypodermic injections of an extract of the thyroid gland of a sheep’, British Medical Journal 2 (10 October 1891) , pp. 796–7.
This paper proposes the Universal Chemical State Equation (UCSE), a foundational theoretical framework aiming to unify all aspects of chemical science. The UCSE posits that all chemical processes are governed by a single, high-dimensional state variable, representing a holistic description encompassing molecular struc…
THE EL-RAKHAWI FRAMEWORK FOR PHYSICS-INFORMED INVERSE MATERIAL DESIGN From Black-Box AI to Quantum Engineering Guided by the Laws of Nature
Polymer materials hold great promise for various applications but face trade-offs among stiffness, toughness, stretchability, and scalable fabrication. Here, we report a strategy that integrates dense side-chain hydrogen-bonding motifs capable of conformational transitions into a highly entangled flexible polymer netw…
Abstract Over the past ten years, the peach fruit fly, Bactrocera zonata (Saunders) (Diptera: Tephritidae), has become a major pest in Egypt, causing harm to a variety of fruit crops. Traditional chemical pesticides are the main tools used in the area to control B. zonata . However, there aren’t many plant-based pesti…
ABSTRACT We report amorphous InGaZnO (a‐IGZO)/crystalline InGaO (C‐IGO)/a‐IGZO stack, thin‐film transistors (TFTs). The IGZO could not be crystallized but the IGO could be crystallized at 450°C. We fabricated dual‐gate C‐IGO TFTs with a‐IGZO layers interfaced with both the top and bottom gate insulators. Owing to the…
This work investigates the potential of potato starch, an agro-industrial waste of natural and renewable origin, as an admixture in traditional cementitious mortars, aiming to contribute to the development of more sustainable and efficient building materials. Five compositions were formulated, maintaining a reference…
This paper investigates the evaluation of class numbers of imaginary quadratic fields from truncated partial sums of Kronecker symbols, commonly referred to as character walks. We explore the $\mathbb{Q}$-linear relations among the values of these walks by bridging classical Dirichlet class number formulas with Kubert…
Ultrasonic vibration (UV) assisted micro-bending experiments were conducted on TA1 titanium alloy sheets to study its effectiveness in controlling springback under size-reduced conditions. The influences of ultrasonic amplitude and holding time on bending force and springback behavior were systematically evaluated. Re…
This paper investigates the phenomenon of referential phase transition, a novel concept arising from computational systems. We explore how the control parameter, denoted as λ, influences the system's complexity and the emergence of distinct phases. Specifically, we examine the transition between regimes characterized…
During the X-ray Diffraction (XRD) identification of the traditional Chinese medicine Os Draconis, the identification model often suffers from limited classification accuracy due to the difficulty in determining optimal parameters. To address this issue, this paper proposes a Hydrodynamic Improved Particle Swarm Optim…