Results 71 to 80 of about 6,147 (304)

Empirical calibration of Na I D and other absorption lines as tracers of high-redshift neutral outflows

Astronomy & Astrophysics
Recent JWST observations of massive galaxies at z > 2 detect blueshifted absorption in Na I D and other resonant absorption lines, indicative of strong gas outflows in the neutral phase.
Moretti Lorenzo, Belli Sirio, Rudie Gwen C., Newman Andrew B., Park Minjung, Khoram Amir H., Chartab Nima, Donevski Darko   +7 more
doaj   +1 more source

Liquid Phase Transmission Electron Microscopy: A Window into the Early Stages of Complex Material Formation

Advanced Functional Materials, EarlyView.
Liquid‐phase transmission electron microscopy enables direct observation of nucleation and growth processes in solution. This review is dedicated to the remembrance of Helmut Cölfen and highlights recent studies on complex materials—oxides, biominerals, organic–inorganic crystals—which were central to his research activity. It summarizes key milestones,
Charles Sidhoum, Vinavadini Ramnarain, Nathaly Ortiz Peña, Dris Ihiawakrim, Clément Sanchez, Ovidiu Ersen   +5 more
wiley   +1 more source

Resonant Column Teston Dynamic Shear Modulus and Damping Ratio of the Remolded Red Clay

工程科学与技术, 2013
:In order to research the dynamic property of the remoulded red clay under small shear strain amplitude condition,through imposing torsional vibration and changing the driving frequency step by step on the soil column with certain humidity, density and ...
李剑, 陈善雄, 姜领发, 熊署丹
doaj  

A Modified Resonant Column Device for In-Depth Analysis of Vibration in Cohesive and Cohesionless Soils

, 2021
With the accelerating progression of global climate change, switching to renewable energy sources is inevitable. Wind energy is a fast-growing branch of this industry, and according to the 2021 Global Wind Report, this trend must continue in order to ...
Marta Bocheńska, Piotr E. Srokosz, Ireneusz Dyka, Marcin Bujko   +3 more
core   +1 more source

Dual‐Mode Magnetic Elastomer for On‐Demand Motion and Degradation

Advanced Functional Materials, EarlyView.
A dual‐mode magnetic elastomer is introduced, enabling DC field‐driven programmable actuation and AC field‐driven magnetothermal degradation. GHz‐range magnetic fields generate ultrafast heating of magnetic nanoparticles that activates cleavage of the silicone elastomer matrix.
Jieun Han, Hyun An, Min‐Ha Oh, Yu‐Lim Lee, Woojin Jeon, Kyung‐Sub Kim, Jae‐Hwan Lee, Seungmin Kang, Yoon‐Nam Kim, Ji‐Won Kang, Daewhan Kim, Min Sang Kwon, Sang‐Koog Kim, Seung‐Kyun Kang   +13 more
wiley   +1 more source

Research on the Static and Dynamic Behavior and Microscopic Mechanisms of Lignosulfonate-Treated Sand

Buildings
Sand, a widely used material in construction, often presents challenges in engineering applications due to its loose granular structure. To address this issue, lignosulfonate (LS), an eco-friendly industrial by-product, is explored as a stabilizing agent
Jinbao Wang, Zishan Fang, Lina Xiao, Javid Hussain, Xiaomeng Ji   +4 more
doaj   +1 more source

Resonant Column Test on the Frozen Silt Soil Modulus and Damping at Different Temperatures

, 2017
The shear modulus and damping ratio of frozen soil are thebasic parameters of its dynamic properties and are often testedwith the dynamic triaxial apparatus.
Xiaoming Yuan, Yu, Xiaobo, Yuan, Xiaoming, Zhuoshi Chen, Zhang, Jiuqi, Sun, Rui, Xiaobo Yu, Rui Sun, Jiuqi Zhang, Chen, Zhuoshi   +9 more
core   +1 more source

Multimode Free-Vibration Decay Column: Small-Strain Stiffness and Attenuation

, 2023
This study presents a simplified resonant column testing method to obtain small-strain dynamic properties of soils in both torsional and flexural vibrations.
Park, Junghee, Noh, Dong-Hwa, Santamarina, Carlos, Kwon, Tae-Hyuk   +3 more
core   +1 more source

Electrode and Microstructure Dependence of Oxygen Diffusion in Ferroelectric Hafnium Zirconium Oxide Thin Films

Advanced Functional Materials, EarlyView.
Significant nanoscale oxygen diffusion coefficient variations are measured in ferroelectric hafnium zirconium oxide films with grain boundaries and electrode interfaces exhibiting values 104 times larger than the grain cores. Overall coefficients are 10X larger for films prepared with metal nitride electrodes compared to refractory metals. New insights
Liron Shvilberg, Thomas W. Pfeifer, Chuanzhen Zhou, Yong Kyu Choi, Duk‐Hyun Choe, Patrick E. Hopkins, Jon F. Ihlefeld   +6 more
wiley   +1 more source

Experimental Study of Influence of Plant Roots on Dynamic Characteristics of Clay

Applied Sciences
Conducting research on the dynamic behavior of root–soil systems is crucial for accurately assessing the seismic response of ecological slopes, thereby providing a scientific foundation for the development of appropriate seismic design measures ...
Quan Shen, Cong Tang, Chengli Zhang, Yongchun Ma   +3 more
doaj   +1 more source