Materials Literature
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Marine chains operate under corrosive and impact-prone conditions, yet the combined influence of seawater exposure, notch condition and test temperature on their impact toughness remains insufficiently clarified. This study addresses this gap by examining the Charpy V-notch impact response of AISI 1008 steel extracted…
In this study, polyamide 6/poly(butylene-adipate-terephthalate) (PA6/PBAT) blends, potentially applied as novel self-healing matrices for structural composites, were developed and characterized. The blends were melt-compounded at different PBAT amounts (from 20 up to 50%vol) and hot pressed. Rheological analysis showe…
This study investigates the high-temperature corrosion behavior of AISI 304 stainless steel (0Cr18Ni9) exposed to a novel hydrophobic and oleophobic KAl(OH) 2 CO 3 ultrafine dry powder fire-extinguishing agent, aiming to assess its corrosion characteristics and application safety in extreme high-temperature environmen…
ABSTRACT The detection and removal of persistent pharmaceutical pollutants in aquatic matrices require the development of highly efficient and structurally robust photoelectrocatalytic platforms. This study reports the architectural engineering of a hierarchical photoanode based on niobium nanochannels (NbNC) decorate…
This revised article addresses Q0039, 'Learn from failed reactions and negative experimental data?' using a question-specific mathematical construction rather than a generic logarithmic template. The proposed model, termed the Failure-Informed Reaction Boundary Model, uses positive outcome y=1, experimentally failed o…
A natural bio-inspired approach for tailoring the optical properties of cadmium sulfide (CdS) thin films through europium (Eu) doping was reported in this paper, wherein Pongamia pinnata leaf extract was employed as a sustainable medium for chemical bath deposition. The phytochemicals present in the extract were utili…
ABSTRACT Gold nanostructures with branched morphologies exhibit strong plasmonic properties, enabling advanced biosensing and biochemical applications. Here, we report a rapid and scalable synthesis of gold nanoflowers (AuNFs) using modified benzenethiols as both reducing and capping agents. Benzenethiols bearing elec…
El presente trabajo documenta una extensión empírica al marco teórico del Toroide Cuántico Numérico en módulo 12 (Z/12Z). A partir del análisis visual de la matriz armónica, revelamos la existencia de un patrón palindrómico estricto que gobierna la distribución de números primos y compuestos. Al aplicar una involución…
This study establishes a nonlinear dynamic formulation for fluid-conveying microscale pipes fabricated from functionally graded materials (FGMs), with size-dependent effects rigorously captured through the three-parameter modified strain gradient elasticity theory. The governing equations are derived via Hamilton’s pr…
This study presents a broadband photodetector operating from the near‐infrared (NIR) to the ultraviolet (UV) region, based on a 0D/2D unipolar heterojunction. The heterostructure, composed of nitrogen‐doped graphene quantum dots (N‐GQDs) and molybdenum disulfide (MoS 2 ), was fabricated via a simple one‐pot hydrotherm…
Food waste-derived carbon dots (CDs) from spent coffee grounds or spinach were synthesized via hydrothermal and solvothermal methods and systematically characterized for their photoluminescence and surface chemical properties. Biological evaluations using human neural progenitor cells (hNPCs) demonstrated efficient ce…
Wydawnictwo SIGMA-NOT wydaje czasopisma fachowe informujące swoich czytelników o najnowszych osiągnięciach naukowych i nowoczesnych rozwiązaniach technicznych w Polsce i na świecie, popularyzuje problemy techniczne oraz poszerza wiedzę i kulturę techniczną.
This revised article addresses Q0024, 'Control defects and grain boundaries to engineer macroscopic material properties?' using a question-specific mathematical construction rather than a generic logarithmic template. The proposed model, termed the Grain-Boundary Property Transfer Model, uses grain-boundary misorienta…
Polystyrene (PS) films typically exhibit brittle fracture under tensile deformation. Hot stretching induces polymer chain orientation, leading to a brittle-to-ductile transition in PS films. In addition, the photoisomerization of azobenzene (AB) using UV irradiation decreases the glass transition temperature (Tg) of t…
The series identifies every Standard-Model interaction vertex with a Reidemeister move on knotted brane loops, and the path integral with a sum over Reidemeister sequences (Papers VIII, XII); the standing open item is the measure. This paper establishes the geometric half of a candidate answer and is explicit that the…
تحلیل بنیادین، بازنویسی تانسوری و اثبات جامعِ کامل مسئله اتلاف گرما و انتقال حرارت غیربالستیک در نانوالکترونیک (Heat Dissipation & Non-Ballistic Phonon Transport Paradox - معمای شماره ۱ از ۱۰۰) در بستر فیزیک اطلاعات حمزه (HIP-1155) به شرح زیر است: ۱. مقدمه و معمای اتلاف گرما و انتقال حرارت غیربالستیک در نانوالکترونیک…
High-performance microwave-absorbing materials (MAMs) require a precise balance between dielectric and magnetic losses to achieve optimal impedance matching. Herein, we report the synthesis of ZnFe2O4@PANI composites via a magnetic-field-aided in-situ oxidative polymerization method. Systematic characterization reveal…
ABSTRACT Chemiluminescence eliminates interference from real‐time excitation light, thereby maximizing the signal‐to‐noise ratio of imaging. However, the reported chemiluminescent scaffolds remain limited, and the development of novel and efficient chemiluminescent scaffolds is critical and urgent. Herein, we synthesi…
Abstract A series of zirconium(IV) complexes with a bis(benzylamino)-p-tert-butylcalix[4]arene ligand, LZrX2, were synthesized and structurally characterized via single-crystal X-ray diffraction and NMR. The obtained complexes proved to be unexpectedly susceptible to protonation because of the low acidity of the ligan…
This study investigates the mechanical and tribological behavior of three composites with a ZrO2 matrix stabilized with 1.75 mol% Y2O3 and containing 1 wt.% Al2O3, reinforced with TiC (A), TiC + ZrC (B), and TiC + WC + Mo2C (C). The matrix powder was synthesized by chemical coprecipitation, and the composites were con…