Results 71 to 80 of about 151,854 (247)

The clashing of in situ and pre‐cast technologies—Western trends and local traditions in concrete engineering shaping shell construction in 20th‐century Hungary

open access: yesStructural Concrete, EarlyView.
Abstract After a blossoming pre‐World War II (WWII) period, the concrete construction industry in then‐socialist Hungary existed in a relative isolation from the Western World during the mid‐20th century. In this paper, we focus on the body of work of one of the then newly established state‐owned design offices, IPARTERV, to show how the isolation ...
Orsolya Gáspár, Péter Haba
wiley   +1 more source

Ironing process optimization for enhanced properties in material extrusion technology using Box–Behnken Design

open access: yesScientific Reports
Material Extrusion (MEX) technology, a prominent process in the field of additive manufacturing (AM), has witnessed significant growth in recent years.
Hussein Alzyod, Peter Ficzere
doaj   +1 more source

A Framework to Define Operational Design Domains for Automated Train Operations

open access: yesIEEE Access
The rail system represents a sustainable and climate-friendly mode of transportation, with significant potential for future mobility. To enhance its efficiency and competitiveness in comparison with other mobility systems, it is essential to prioritize ...
Lucas Greiner-Fuchs, Martin Cichon
doaj   +1 more source

Dynamic analysis of the train-bridge interaction: an accurate and efficient numerical method [PDF]

open access: yes, 2008
The dynamic behavior of railway bridges carrying high-speed trains can be analyzed with or without the consideration of the vehicle's own structure.
Azevedo, A., Calcada, R., Neves, Sérgio
core  

Development of Urban Electric Bus Drivetrain [PDF]

open access: yes, 2019
The development of the drivetrain for a new series of urban electric buses is presented in the paper. The traction and design properties of several drive variants are compared.
Chyský J.   +5 more
core   +1 more source

Evaluation of prestress losses in concrete beams using destructive and non‐destructive methods

open access: yesStructural Concrete, EarlyView.
Abstract Over the past few decades, prestressing techniques have become essential in the construction of key structures, infrastructure, and bridges. The serviceability and safety of prestressed concrete (PC) elements are closely tied to the effectiveness of the prestressing process.
A. N. Consiglio, G. Muciaccia, G. Rosati
wiley   +1 more source

Ungulate substrate use in fauna passages

open access: yesWildlife Biology, EarlyView.
Fauna passages are increasingly constructed at major roads and railways to mitigate the negative effects of infrastructure and traffic on wildlife. The function of such passages depends on design, including the construction materials, soil, and vegetation.
Milla Niemi, Jan Olof Helldin
wiley   +1 more source

Dynamic vortex characteristics and their contribution to heat transfer enhancement in the channel of a serrated finned tube heat exchanger

open access: yesCase Studies in Thermal Engineering
The dynamic vortex characteristics and thermal-hydraulic performance of a serrated finned tube heat exchanger were numerically analyzed under varying Reynolds numbers (Re = 10,000–60,000), fin spacing (Sf = 3.63–6.76 mm), and fin height (hf = 10.7–14.7 ...
Zhi-Min Lin   +4 more
doaj   +1 more source

Effects of complex soundscapes on the occurrence of Anaxipha pallidula in isolated green spaces in Tokyo

open access: yesWildlife Biology, EarlyView.
Urban green spaces experience a mix of natural and anthropogenic noises, which could disrupt the vocal communication of several species. This study investigated how such complex soundscapes affect the occurrence of Anaxipha pallidula, which communicates through calls, focusing on both sound level and quality.
Hiroki Mori, Takeshi Osawa
wiley   +1 more source

Enhanced Strength–Ductility Synergy of Mg-Al-Sn-Ca Alloy via Composite Asymmetric Extrusion

open access: yesCrystals
Fine-grain and weak-texture magnesium alloys are the long-term development targets of lightweight structural materials. In this study, a new composite asymmetric extrusion (CAE) is developed, which, coupling with an asymmetric die and an asymmetric ...
Xiwen Chen   +4 more
doaj   +1 more source

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