Results 81 to 90 of about 20,515 (265)

Solvent‐Guided Chiral Assemblies and Chemical Doping of OEG‐Functionalized Conjugated Polymers

Advanced Materials, EarlyView.
Solvent‐dependent aggregation pathways dictate whether conjugated polymers form chiral lyotropic liquid‐crystalline assemblies or achiral packed aggregates. Mapping solvent‐controlled β₁ and β2 states reveals that weaker backbone association favors β₁ aggregates and reorganizable twisted mesophases, whereas stronger backbone association favors β2 ...
Sanghyun Jeon, Justin Scott Neu, Nahyun Ahn, Ayse Senlik, Yen‐Chi Chen, Pravini S. Fernando, Priyotosh Bairagya, Chetan Kumar Prasad, Janice Mihyun Baek, Wei You, Ying Diao   +10 more
wiley   +1 more source

Exploration of Mathematical Values on Traditional Umbrellas in the Alas Indigenous Community in Southeast Aceh

Journal of Mathematics Instruction, Social Research and Opinion
This study explores ethnomathematics embedded in the forms and motifs of the Payung Mesikhat, a cultural symbol of the Alas Indigenous community in Darul Amin Village, Southeast Aceh Regency.
Dinda Dinda, Machrani Adi Putri Siregar
doaj   +1 more source

Cornus Mas L. Seed‐Derived Biosorbent for Methylene Blue Removal: Surface Characterization and Biosorption Performance

Advanced Materials Interfaces, EarlyView.
Cornus mas L. seeds are transformed into a high‐performance biosorbent through chemical modification, effectively removing methylene blue from aqueous solutions. Comprehensive characterization and optimization reveal a maximum biosorption capacity of 71.71 mg g−1, establishing this sustainable, cost‐effective material as a promising solution for ...
Hakan Yıldız, Adem Necip, Arslan Yusuf Yüksel   +2 more
wiley   +1 more source

Geometry Concept on the Motifs of Woven Fabric in Kefamenanu Community

Journal of Research and Advances in Mathematics Education, 2019
For the Kefamenanu community, the motif serves as the identity of the person who wears it. Nevertheless, the woven fabric must be present at cultural occasions, welcoming guests, and death ceremonies.
Yohanis Ndapa Deda, Stanislaus Amsikan
doaj   +1 more source

The mathematical theory of the motion of rotated and unrotated rockets [PDF]

Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1949
Abstract An account is given of the mathematical theory of the motion of a rocket in flight. The aerodynamic forces and couples, and those due to the action of the burning gases, are investigated as fully as possible, and the equations of motion are set up in their most general form.
openaire   +2 more sources

A High‐Resolution THz‐PCF Sensing Framework: Precise Identification of Food Preservatives Through Refractive Index Analysis

Advanced Materials Interfaces, EarlyView.
As presented in the graphical abstract, it depicts an image of a terahertz photonic crystal fiber (THz‐PCF) sensor with a polygonal shape in the core, which is filled with an analyte, and air slots in the cladding. The THz waves will travel through the fiber, and due to increased light‐matter interaction in the sensing region, changes in refractive ...
T. H. M. Sumon Rashid, Md. Nayem Hossain, Md. Golam Kibria, A. H. M. Iftekharul Ferdous, Jabin Tasnin Upoma, Md. Lalon Hossain, Sajad Ali   +6 more
wiley   +1 more source

Analysis of spatial reasoning ability in solving geometric transformation problems

Jurnal Math Educator Nusantara: Wahana Publikasi Karya Tulis Ilmiah di Bidang Pendidikan Matematika
Spatial reasoning ability significantly affects mathematics learning in the area of geometric transformations. However, students’ spatial reasoning ability is still underdeveloped. This study focused on analyzing students’ spatial reasoning ability while
Erni Puji Astuti, Reza Septia Handayani, Karisma Nurul Ngulia, Dwi Lestari, Debi Saktiyani, Sintya Linggar Pradana   +5 more
doaj   +1 more source

High Quality MoS2 Layered Thin Films Obtained by Ionized Jet Deposition Investigated by X‐ray Absorption Spectroscopy at S L2,3 and Mo M2,3 Edges

Advanced Materials Interfaces, EarlyView.
Soft x‐ray absorption spectroscopy at the S L2,3 and Mo M2,3 edges reveals synthesis‐dependent electronic and structural order in MoS2. Bulk, exfoliated, and CVD samples show well‐resolved 2D features, while as‐deposited IJD films appear amorphous but crystallize into ordered 2H‐MoS2 upon moderate annealing, confirming IJD as a viable low‐temperature ...
Giulia Giovanelli, Alessandro Lodi, Angelo Giglia, Nicola Mahne, Rahul Kesarwani, Jana Vejpravova, Steffen Rühl, Giovanni Ligorio, Emil J. W. List‐Kratochvil, Lucia Nasi, Melanie Timpel, Marco V. Nardi, Luca Pasquali   +12 more
wiley   +1 more source

Integrating desmos and songket motifs: A PMRI-based learning trajectory for rotation

Jurnal Elemen
This study is motivated by students’ low conceptual understanding and spatial reasoning in rotation, as well as the limited integration of local cultural contexts with digital technology in mathematics learning.
Puja Teressa Fawensi, Zulkardi Zulkardi, Ely Susanti, Meryansumayeka Meryansumayeka   +3 more
doaj   +1 more source

A mathematical approach to Wick rotations

, 2020
In this thesis we define Wick-rotations mathematically using pseudo-Riemannian geometry, and relate Wick-rotations to real geometric invariant theory (GIT). We discover some new results concerning the existence of Wick rotations (of various signatures).
openaire   +1 more source