Results 81 to 90 of about 144,627 (328)
Rail Track Maintenance Planning: An Assessment Model [PDF]
, 2000 In Australia, railway track maintenance costs comprise between 25-35 percent of total freight train operating costs. Track maintenance planning models have been shown to reduce maintenance costs by 5 to 10 percent though improved planning.
Ferreira, Luis +2 more
core +2 more sources
The Effect of Amino Acids on the Formation of Amorphous Calcium Carbonate Nanoparticles
Advanced Functional Materials, EarlyView.Biomineral formation often proceeds via the assembly of amorphous calcium carbonate (ACC) nanoparticles with narrow size distributions. Using in situ SAXS coupled to a stopped‐flow device, we follow synthetic ACC formation with a 10 ms time resolution and show that amino acids narrow the size distribution at low supersaturation, highlighting their key ...
Lucas Kuhrts +10 more
wiley +1 more source
Advanced Functional Materials, EarlyView.Microscale hydrogels (microgels) feature improved mass transport characteristics supportive of fast actuation and chemical tunability amenable to programmed stimuli response. A unique soft actuator architecture is realized by encapsulating microgels in soft microcirculatory systems which enable the convenient delivery of liquid stimuli for powering and
Nengjian Huang +2 more
wiley +1 more source
Chengshi guidao jiaotong yanjiu[Objective] Subway carriage fire accidents often cause heavy loss of life and property, while the early detection of subway carriage fire can effectively ensure passenger′s lives.
LI Hang +5 more
doaj +1 more source
Optimization Method of Locomotive Working Diagram Layout
Journal of Advanced Transportation, 2019 Rational scheduling of locomotive paths (the locus of the locomotive point in the train working diagram) is an important step in drawing a locomotive working diagram by a computer. But there are some problems in this process, such as the computer usually
Yajing Zheng, Wenzhou Jin
doaj +1 more source
IET Electrical Systems in Transportation, 2020 This study presents a design optimisation (DO) approach for optimal component sizing of the proton exchange membrane fuel cell (PEMFC)-battery hybrid energy system (HES) and a controller design approach for DC-bus voltage regulation and load sharing ...
Upasana Sarma, S. Ganguly
semanticscholar +1 more source
Membrane Wrapping for High Capacity and Rapidly Switchable Adhesives
Advanced Functional Materials, EarlyView.A membrane‐wrapping mechanism enables high‐capacity, rapidly switchable adhesion by coupling suction, friction, and adhesion. Broadband performance is achieved in dry and underwater conditions, allowing fast, reversible manipulation of objects of diverse sizes and shapes, from delicate eggs and berries to flat, complex, or heavy objects. These outcomes
Yeunhee Kim +2 more
wiley +1 more source
IET Intelligent Transport SystemsThe traditional distributed control system of trains faces challenges such as weak functional coordination, limited information sharing, significant control response delays, and low speed control accuracy, thereby impeding the efficient and energy‐saving
Jing Shang, Cheng Li, Xiwen Yuan
doaj +1 more source
New applications for phosphoric acid fuel cells [PDF]
New applications for phosphoric acid fuel cells were identified and evaluated. Candidates considered included all possibilities except grid connected electric utility applications, on site total energy systems, industrial cogeneration, opportunistic use ...
Breuer, C. T., Stickles, R. P.
core +1 more source
Advanced Functional Materials, EarlyView.MAGTWIST: A compact magnetic rotary actuator, enabling smooth, stepless rotation, and on‐demand locking. Inspired by peristalsis, a soft polymer belt generates a traveling‐wave, enabling 270° rotation when heated. Cooling stiffens the belt, locking it in position and enabling it to withstand high loads.
Simon Frieler +3 more
wiley +1 more source