Results 141 to 150 of about 4,252,197 (332)

Collision‐Resilient Winged Drones Enabled by Tensegrity Structures

Advanced Robotics Research, EarlyView.
Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui, Raphael Zufferey, William Stewart, Mohammad Askari, Simon Jeger, Dario Floreano   +5 more
wiley   +1 more source

Exploring Ligand Effects in the Selective Catalytic Dehydrogenative Borylation of Alkynes with Aluminum

Advanced Synthesis &Catalysis, EarlyView.
Proper selection of a modified guanidinato ligand allows for the selective catalytic dehydroborylation of terminal alkynes by an air‐stable aluminum complex. A plausible reaction pathway is suggested based on DFT studies, where the auxiliary substituent of the guanidinato ligand actively participates in the activation of the σ CH bond.
Carlos Ginés, Blanca Parra‐Cadenas, Rafael Fernández‐Galán, David Elorriaga, Alberto Ramos, Daniel García‐Vivó, Fernando Carrillo‐Hermosilla   +6 more
wiley   +1 more source

Oedometer Study Regarding the Consolidation Behavior of Nanjing Soft Clay

Applied Sciences
Ground settlement resulting from consolidation may lead to tilted buildings, cracks in the pavement, damage to underground utilities, etc. Therefore, it is crucial to understand the consolidation behaviors (including primary consolidation and secondary ...
Yang Liu, Ruchen Ma, Yiyao Zhu, Xianting Yi, Alfrendo Satyanaga, Guoliang Dai, Peng Gao, Qian Zhai   +7 more
doaj   +1 more source

Explorative study into a simplified numerical evaluation of the bending capacity of rebar reinforced steel fibre reinforced concrete beams during fire exposure [PDF]

, 2019
A simplified 2D numerical model for evaluating the bending capacity of rebar reinforced steel fibre reinforced concrete (R/SFRC) beams during fire is presented.
Taerwe, Luc, Van Coile, Ruben, Xiliang, Ning   +2 more
core  

Gas‐ and Liquid‐Phase Catalysts for Solar‐Driven Catalytic Ammonia Decomposition

Advanced Sustainable Systems, EarlyView.
Amid the drive toward carbon‐neutral hydrogen, this review analyzes photocatalytic ammonia decomposition in gas‐ and liquid‐phase systems. It examines catalyst families—TiO2, ZnO, Ru, single‐atom, and antenna–reactor designs. This study summarizes advances in bandgap tuning, active‐site and cocatalyst engineering, photothermal coupling, and machine ...
Zhuohao Yang, Xuechen Jing, Ruhan Liu, Zhipeng Cao, Zongyou Yin   +4 more
wiley   +1 more source

The realities of additively manufactured concrete structures in practice

Cement and Concrete Research, 2022
F. Bos, C. Menna, M. Pradena, E. Kreiger, W.R. Leal da Silva, A. Rehman, D. Weger, R. Wolfs, Y. Zhang, L. Ferrara, V. Mechtcherine   +10 more
semanticscholar   +1 more source

Techno‐Economic Analysis of Polylactic Acid from Corn Stover: Understanding Uncertainty and Variability via Artificial Intelligence Tools

Advanced Sustainable Systems, EarlyView.
This study analyses the uncertainty and variability existing in the economic performance of polylactic acid (PLA) production, via integrating techno‐economic analysis with process models and Monte Carlo simulation enabled by artificial intelligence. The results show that the minimum selling price varies from $2,107 to $3076/t PLA.
Yinqiao Wang, Jiawei Huang, Chuan Xu, Sipan Liu, Junwei Li, Kai Lan   +5 more
wiley   +1 more source

Life cycle assessment of a column supported isostatic beam in high-volume fly ash concrete (HVFA concrete) [PDF]

, 2010
Nowadays, a lot of research is being conducted on high-volume fly ash (HVFA) concrete. However, a precise quantification of the environmental benefit is almost never provided. To do this correctly, we adopted a life cycle (LCA) approach. By considering a
De Belie, Nele, Gruyaert, Elke, Robeyst, Nicolas, Van den Heede, Philip   +3 more
core  

Capillary Dynamics Analysis of Millimetric Tubes for Anti‐Slip Surfaces: A Phase‐Field Based Finite Element Approach and Experimental Validation

Advanced Theory and Simulations, EarlyView.
Phase‐field method based numerical modelling of the capillary rise in millimeter‐sized tubes, aiming for anti‐slip applications. The experimental validation was performed through capillary assays in polyethylene oxide (PEO) bulk modified polydimethylsiloxane (PDMS) channels.
Shivam Sharma, Vipin Richhariya, Diana Pinho, Óscar Carvalho, Filipe S. Silva, Ashis Tripathy, Nuno Dourado, Susana O. Catarino   +7 more
wiley   +1 more source

Monitoring of fresh concrete curing by combined NDT techniques [PDF]

, 2018
Ensuring the quality of fresh concrete and suitable curing conditions substantially reduces the possibility of future failure to perform as designed. However, the most reliable examination for concrete is mechanical testing after hardening.
Aggelis, Dimitrios G., De Schutter, Geert, Dzaye, Evin, Tsangouri, Eleni   +3 more
core   +1 more source