Results 131 to 140 of about 138,619 (284)

F-5M DTA PROGRAM. doi: 10.5028/jatm.2009.0101113120

Journal of Aerospace Technology and Management, 2011
The Brazilian F-5 was submitted to avionics and weapons upgrade. This “new” aircraft has proven to be heavier and more capable. A comprehensive damage tolerance analysis is being performed to evaluate how the new mission profiles and weight distribution ...
Daniel Ferreira V. Mattos, Alberto W. Silva Mello Jr, Fabricio N. Ribeiro   +2 more
doaj  

Investigation of the Mechanical, Thermal, and Morphological Properties of ABS Composite Reinforced With Bentonite and DEHPA‐Modified Bentonite

Journal of Polymer Science, Volume 63, Issue 6, Page 1505-1517, 15 March 2025.
Mechanical and thermal properties of ABS/Bentonite/DEHPA composites. ABSTRACT This study investigates the mechanical, thermal, and surface characteristics of acrylonitrile–butadiene–styrene (ABS) composites reinforced with bentonite and bis(2‐ethylhexyl) phosphate (DEHPA)‐modified bentonite.
İdris Karagöz, B. Şebnem Şimşiroğlu, Elif Nur Özer, Harun Sepetcioglu, Jülide Hızal   +4 more
wiley   +1 more source

A Molten Salt Strategy to Convert Bulk Nb2O5 Into 2D Nonlayered Niobium Nitride Nanosheets for Superior Pseudocapacitive Storage

Rare Metals, EarlyView.
ABSTRACT Two‐dimensional (2D) nonlayered niobium nitrides have attracted considerable interest for electrochemical energy storage. However, the synthesis of these materials is hampered by their nonlayered crystal structures, which are characterized by strong three‐dimensional chemical bonding.
Rui Huo, Maoliang Tan, Hao Song, Liheng Wang, Tao Li, Feng Zhou, Zhi Chang, Paul K. Chu   +7 more
wiley   +1 more source

Versatile High‐Sensitivity EPR Using Superconducting Spiral Microresonators

Small Methods, EarlyView.
A significant sensitivity enhancement in conventional X‐band pulsed EPR is achieved using planar spiral microresonators fabricated from high‐temperature superconducting YBCO. Fully compatible with standard instrumentation, the approach enables high‐fidelity spin control under typical sample conditions.
Gediminas Usevičius, Mantas Šimėnas, Blaise L. Geoghegan, Oscar W. Kennedy, Ignas Pocius, Patrick Hogan, Ana Villanueva Ruiz de Temino, Jean‐Baptiste Verstraete, Paulina Verbaitytė, Angeliki Chatziathanasiou, G. Antilen Jacob, Mindaugas Kamarauskas, Marius Treideris, Paulius Gečys, Joseph Alexander, Vidmantas Kalendra, Jūras Banys, Maxie M. Roessler, John J.L. Morton   +18 more
wiley   +1 more source

Substitution of Ti by Nb in Maraging Steel: Effects on Strengthening Mechanisms and Crystallographic Behavior

steel research international, EarlyView.
This work demonstrates that replacing Ti with Nb in maraging steel forms nanoscale Nb–Mo particles along boundaries, strengthening the alloy without relying on Ti phases. Heat‐treatment tuning promotes uniform crystal orientation and balanced grain boundaries, enabling strong yet ductile behavior.
Mohamad Masoumi, Manoel José, Gerardo Jesus Aracena Pérez, Isabel Ferreira Barros, Marcos Natan da Silva Lima, Geronimo Perez, Samuel Lucas Santos Medeiros, Pedro Henrique Pinheiro Lima, Luís Flávio Gaspar Herculano, Maria Vittoria Moraschini Reis, Sérgio Souto Maior Tavares, Farina Alexandre Bellegard, Fridman Daniel Pallos, Miloslav Béreš, Hamilton Ferreira Gomes de Abreu   +14 more
wiley   +1 more source

How does the digital transformation of agriculture affect carbon emissions? Evidence from China’s provincial panel data

Humanities & Social Sciences Communications
Agriculture is becoming a substantial contributor to carbon emissions in China, and the efficient reduction of agricultural carbon emissions (ACEs) has become a universal concern.
Yihui Chen, Minjie Li
doaj   +1 more source

Flexoelectric Polarization‐Enhanced Gd‐Based Nanoflowers for Efficient Phosphatase‐Mimicking Dephosphorylation

Small Structures, EarlyView.
Flexoelectric polarization is harnessed to dynamically enhance phosphatase‐mimicking catalysis in Gd‐based nanoflowers, enabling ultrasound‐responsive and efficient biophosphate ester hydrolysis through strain‐induced electronic modulation. Phosphatase‐mimicking nanozymes provide highly stable enzyme‐like activity but remain limited by their static ...
Linjing Su, Jingyan Xu, Rong Huang, Jinlan Liao, Lixue Zhao, Ling Li, Zhi Zhang, Yuhao Xiong   +7 more
wiley   +1 more source

I-DTA

Tudo é Ciência: Congresso Brasileiro de Ciências e Saberes Multidisciplinares, 2022
openaire   +1 more source

Enhancing printability of 3D printed concrete by using metakaolin and silica fume

Structural Concrete, EarlyView.
Abstract This study investigates the effects of incorporating metakaolin (MK) and silica fume (SF) on the fresh and hardened properties of 3D printed concrete (3DPC). Five mix designs were prepared with MK replacement levels of 0%, 10%, 12.5%, and 15%, along with one mix containing 10% MK and 5% SF.
Marwah M. Thajeel, Katalin Kopecskó, György L. Balázs   +2 more
wiley   +1 more source

Utilization of cellulose nanocrystal as a bio‐based material and nanosilica in cement‐based systems: A comparative study

Structural Concrete, EarlyView.
Abstract Cellulose nanocrystals (CNCs), increasingly utilized in cement‐bound materials, offer improved material properties and enhanced sustainability due to their bio‐based origin. Nanosilica (NS), known for its high reactivity and refinement of cement microstructure, also significantly impacts cement performance.
Ali Satar Jaber Al‐Askary, Didem Oktay, Katalin Kopecskó   +2 more
wiley   +1 more source