Results 71 to 80 of about 5,371 (247)

Sustainable Plant‐Based Water Repellent Coatings Using Hydrophobic Pine and Palm Pollen

Advanced Materials Interfaces, EarlyView.
A novel formulation strategy for creating superhydrophobic coatings using plant‐derived waxes and chemically treated pine and palm pollen. By employing acid modification, the hydrophobicity of the pollen surface is enhanced, resulting in water contact angles exceeding 150°.
Brenda Resendiz‐Diaz, Emma Sadler, Colin Roger Crick   +2 more
wiley   +1 more source

The Influence of Mesoscale Particle Structure on the Electrode Degradation and Resultant Electrochemistry of Lithium Ion Cells With Nickel Rich Lithium Nickel Manganese Cobalt Oxide Positive Electrodes

Advanced Materials Technologies, EarlyView.
Milled polycrystalline NMC811 cathode (MPC NMC) with smaller secondary particle and higher surface area had 1) greater cathode tortuosity, 2) reduced surface Ni on the cycled MPC cathodes consistent with surface reconstruction, and 3) increased Ni deposition from cathode‐anode crosstalk, manifesting in lower functional capacity and higher impedance ...
Edelmy J. Marin Bernardez, Andrew Nicoll, David J. Arnot, Armando Rodriguez Campos, Patrick J. Barry, Marie F. Millares, Cynthia Huang, Melissa A. Guercio, Grace K. Dono, Alexis Pace, Xianghui Xiao, Cherno Jaye, Conan Weiland, Jianming Bai, Hui Zhong, Michael Drakopoulos, Zhong Zhong, Nghia T. Vo, Xiao Tong, Esther S. Takeuchi, Amy C. Marschilok, Shan Yan, Kenneth J. Takeuchi   +22 more
wiley   +1 more source

Experimental study on the strength and disintegration characteristics of carbonaceous slate in Qinchu Tunnel

河南理工大学学报. 自然科学版
ObjectivesDuring the tunnel construction， layered rock structures are prone to problems such as vault collapse and initial support cracking. Therefore， it is of great engineering value to deeply analyze the mechanical characteristics of layered rock ...
Zhang Jian, Zhao Haifeng, Ren Huachun, Peng Bo, Liu Wei, Zhang Huimei, Fu Xiao   +6 more
doaj   +1 more source

Recent Developments in Energy Storage and Conversion Applications of Multifunctional Vanadium Carbides

Advanced Materials Technologies, EarlyView.
This review systematically explains the synthesis, properties, and energy storage and conversion applications of vanadium carbides. We introduce the structural and the synthetic strategies and reviewed recent developments in the material synthesis processes. The emerging applications of vanadium carbides in energy storage and conversion are highlighted.
Swathy B. Saseendran, Sang Mun Jeong, Chandra Sekhar Rout   +2 more
wiley   +1 more source

Blasting crack propagation patterns and parameters optimization in tunnel with layered jointed rock mass

矿业科学学报
During tunnel construction using the drilling and blasting method, layered jointed rock masses often pose engineering challenges such as over- and under-excavation of the crown and working face.
JI Hongliang, YANG Shaohong, QI Ningning, SI Jiangtao, WEI Huaqiang, LI Zhaobin, LI Qingwang, ZHANG Xiantang   +7 more
doaj   +1 more source

Wood‐Derived Nanocellulose‐Biocarbon Fresnel‐Zone Plate Lenses for Sub‐THz Frequency Applications

Advanced Materials Technologies, EarlyView.
Wood‐derived nanocellulose and lignin‐based biocarbon were combined to fabricate fully bio‐based Fresnel zone plate (FZP) lenses for sub‐terahertz frequencies. These sustainable FZP lenses exhibit low dielectric loss and high directivity, achieving performance comparable to that of metallic references, and remain functional under environmental stress ...
Riikka Haataja, Mikko Kokkonen, Niina Halonen, Sami Myllymäki, Umair Rafique, Mandeep Singh, Ossi Laitinen, Heli Jantunen, Kristiina Oksman, Henrikki Liimatainen   +9 more
wiley   +1 more source

STRESSES AROUND A TUNNEL PASSING THROUGH A LAYERED ROCK MASS

ABSTRACT: The article addresses the issue of determining the stresses around a tunnel with a circular cross-section. It passes through several rock layers. The boundary planes between the layers are arbitrarily inclined relative to the tunnel axis. Furthermore, the planes are parallel to the horizontal axis of the tunnel crosssection.The specified ...
Trifonova-Genova, Violeta, Tonkova, Gergana   +1 more
openaire   +2 more sources

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

Synthetic Rock Analogue for Permeability Studies of Rock Salt with Mudstone

Applied Sciences, 2017
Knowledge about the permeability of surrounding rock (salt rock and mudstone interlayer) is an important topic, which acts as a key parameter to characterize the tightness of gas storage.
Hongwu Yin, Hongling Ma, Xiangsheng Chen, Xilin Shi, Chunhe Yang, Maurice B. Dusseault, Yuhao Zhang   +6 more
doaj   +1 more source

Experimental Study on the Propagation Characteristics of Blasting Vibration in Layered Rock Masses

DEStech Transactions on Engineering and Technology Research, 2017
Blasting vibration propagates anisotropically in the layered rock mass. Combined with a typical engineering case, propagation and attenuation characteristics of blasting vibration along different propagation paths were studied based on the blasting experiment and vibration measurement result.
Fei Zou, Li Gong
openaire   +2 more sources