Results 91 to 100 of about 259,098 (306)

Dynamic Response of a Double-Beam System Subjected to a Harmonic Moving Load

open access: yesApplied Sciences
The dynamic behavior of a double-beam configuration subjected to a harmonic moving load was studied in this paper. The model was built to represent the wheel–track system that was composed of two infinite Timoshenko beams joined by uniformly spaced ...
Mingfei Lu, Xuenan Wang, Hui Li
doaj   +1 more source

Achieving High ON State Current through Ferroelectric Polarization‐Dependent Interfacial Resistance Switching in Undoped Orthorhombic HfO2 Films

open access: yesAdvanced Functional Materials, EarlyView.
Ferroelectric tunnel junction devices based on epitaxial undoped ferroelectric HfO2 films demonstrate stable switching endurance of over 106 switching cycles, low write voltages of ±3 V, 16 measured resistance states, and neuromorphic capability.
Markus Hellenbrand   +13 more
wiley   +1 more source

Wind Tunnels in Engineering Education [PDF]

open access: yes, 2011
The subject of fluid mechanics is filled with abstract concepts, mathematical methods, and results. Historically, it has been a challenging subject for students, undergraduate and graduate. In most institutions, the introductory course in fluid mechanics is accompanied by a laboratory course.
openaire   +3 more sources

Study on the impact of vehicle-induced vibration on the flexural behavior of UHPC joints in widened bridges

open access: yesUrban Lifeline
Bridge widening involves phased construction of adjacent structures to maintain uninterrupted traffic flow. This process exposes freshly placed longitudinal joints between staged deck constructions to vehicle-induced vibrations, potentially compromising ...
Jun Yang   +8 more
doaj   +1 more source

Malaysia and China students’ feedback on the implementation of critical thinking pedagogy: a case study [PDF]

open access: yes, 2020
Having a knowledgeable and highly skilled human capital is an important factor for Malaysia to transform its economy towards achieving a developed nation and high-income status by the year 2020.
Azid, Nurulwahida   +3 more
core  

Furan‐Substituted Phosphine‐Oxide as an Efficient Interfacial Modifier for Wide‐Bandgap Perovskite Solar Cells

open access: yesAdvanced Functional Materials, EarlyView.
We report phosphine‐oxide interlayers for wide‐bandgap perovskite solar cells, in which tuned P = O Lewis basicity enables selective passivation of buried NiOx/perovskite interfaces and introduces interfacial dipoles that strengthen the built‐in field.
JeeHee Hong   +6 more
wiley   +1 more source

A state-of-the-art review on loess tunnels

open access: yesJournal of Traffic and Transportation Engineering (English ed. Online)
China's loess distribution area covers 640,000 km2, accounting for about 6.6% of its land area and about 4.9% of the world's total loess distribution area.
Jianxun Chen   +16 more
doaj   +1 more source

Atomic Layer Deposition in Transistors and Monolithic 3D Integration

open access: yesAdvanced Functional Materials, EarlyView.
Transistors are fundamental building blocks of modern electronics. This review summarizes recent progress in atomic layer deposition (ALD) for the synthesis of two‐dimensional (2D) metal oxides and transition‐metal dichalcogenides (TMDCs), with particular emphasis on their enabling role in monolithic three‐dimensional (M3D) integration for next ...
Yue Liu   +5 more
wiley   +1 more source

Research status and new design concept of compressed air energy storage technology in abandoned mine

open access: yesMeitan kexue jishu
Compressed air energy storage(CAES) can be widely used in power grid peak load shifting and large-scale new energy consumption. It has the advantages of large installed capacity, long service life, and clean environmental protection, and is regarded as ...
Hanpeng WANG   +7 more
doaj   +1 more source

Numerical Investigation of Heat-Insulating Layers in a Cold Region Tunnel, Taking into Account Airflow and Heat Transfer

open access: yesApplied Sciences, 2017
In cold regions, heat-insulating layers play a crucial role in frost prevention in tunnels. This paper presents a numerical study on the anti-freezing behavior of a cold region tunnel (the Dege tunnel) with heat-insulating layers. A numerical model based
Qixiang Yan   +4 more
doaj   +1 more source

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