Results 51 to 60 of about 37,802 (311)
Advanced Functional Materials, EarlyView.This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner +9 more
wiley +1 more source
Timelike line congruences via surface theory in Minkowski 3-space
AIP AdvancesLine congruences are crucial in classical geometry, particularly in relating one surface to another through families of lines. These correspondences are most valuable when they preserve key geometric features of the original surface.
Areej A. Almoneef, Rashad A. Abdel-baky
doaj +1 more source
Jump into hopscotch: A game-based approach in enhancing students’ proficiency in triangle congruence
Davao Research JournalTriangle congruence postulates is a crucial concept in Geometry. The integration of games into mathematics education is a significant development that can enhance student engagement and understanding.
Joylie Mae E Payot +2 more
doaj +1 more source
Frontiers in Mechanical Engineering, 2023 Past decades featured significant advancements in additive and micromanufacturing that facilitated the creation of functional patterned surfaces with impressive spatial resolutions.
Wonhyeok Lee, Melih Eriten
doaj +1 more source
Advanced Functional Materials, EarlyView.The study presents biodegradable and recyclable mixed‐matrix membranes (MMMs), hydrogels, and cryogels using luminescent nanoscale metal‐organic frameworks (nMOFs) and biopolymers. These bio‐nMOF‐MMMs combine europium‐based nMOFs as probes for the status of the materials with the biopolymers agar and gelatine and present alternatives to conventional ...
Moritz Maxeiner +4 more
wiley +1 more source
Complex Structure of Kerr Geometry and Rotating `Photon Rocket' Solutions [PDF]
, 2003 In the frame of the Kerr-Schild approach, we obtain a generalization of the Kerr solution to a nonstationary case corresponding to a rotating source moving with arbitrary acceleration.
Burinskii, Alexander
core +1 more source
Advanced Functional Materials, EarlyView.This study examines how pore shape and manufacturing‐induced deviations affect the mechanical properties of 3D‐printed lattice materials with constant porosity. Combining µ‐CT analysis, FEM, and compression testing, the authors show that structural imperfections reduce stiffness and strength, while bulk material inhomogeneities probably enhance ...
Oliver Walker +5 more
wiley +1 more source
Unveiling Multidimensional Physicochemical Design Principles for Tissue Processing Hydrogels
Advanced Functional Materials, EarlyView.This study establishes a materials‐based design framework for polymer hydrogels in tissue clearing, linking physicochemical properties to performance in tissue processing, labeling, and imaging. By analyzing rheology, swelling, porosity, antibody diffusion, mechanical performance, and thermochemical stability across platforms, this work provides a ...
Sangjae Kim +8 more
wiley +1 more source
ETNOMATEMATIKA: KRISTALISASI BUDAYA DALAM MODEL PEMBELAJARAN 3R CORE
Barekeng, 2019 The 3R learning model is a learning model that emphasizes Reading, Writing and Arithmatic based on the context of the 21st century skills. The 3R learning model is translated into life and career skills, learning and innovation skills and information ...
Feny Rita Fiantika, D. Darsono, Ika S.
doaj +1 more source
Inertial forces and the foundations of optical geometry
, 2006 Assuming a general timelike congruence of worldlines as a reference frame, we derive a covariant general formalism of inertial forces in General Relativity. Inspired by the works of Abramowicz et. al. (see e.g. Abramowicz and Lasota, Class. Quantum Grav.
Abramowicz M A +16 more
core +1 more source