Results 111 to 120 of about 5,027 (287)

The Influence of Route Characteristics, Train Design and Maintenance Policy on Wheel Tread Damage, Wheel Life and Costs for Multiple-Unit Trains [PDF]

open access: yes
In the UK, the use of similar vehicle types by a range of privatised operators gives the opportunity to assess the influence of different route conditions and maintenance practices on wheel tread damage, wheelset life and costs.
Bevan, Adam   +2 more
core  

Engaging the public in plant science: Communication facilitators and barriers of scaling up a citizen science campaign

open access: yesPeople and Nature, EarlyView.
Abstract Volunteers have been involved in nature observations for decades through citizen science initiatives, providing large data sets as well as problem identification that allow a more complete understanding of many natural phenomena. Although communication is a core component in citizen science, the key factors that determine its effectiveness in ...
Kristiina Gibson   +18 more
wiley   +1 more source

Analysis and Solution of Electromagnetic Emission of High-speed EMU

open access: yes, 2020
In order to solve the problem of electromagnetic emission problem of high-speed EMU in the fixed frequency band during the type test, the electrical principle system of vehicle traction drive system was decomposed. The radio frequency emission mechanism occurring in the frequency band of 150 kHz~1.15 MHz and 200 MHz~1 GHz was analyzed from the ...
Nan JIA, Qiumin ZHANG
openaire   +1 more source

Post-Shuttle EVA Operations on ISS [PDF]

open access: yes
The expected retirement of the NASA Space Transportation System (also known as the Space Shuttle ) by 2011 will pose a significant challenge to Extra-Vehicular Activities (EVA) on-board the International Space Station (ISS).
Chullen, Cinda   +2 more
core   +1 more source

Spartan Daily, October 23, 1942 [PDF]

open access: yes, 1940
Volume 31, Issue 17https://scholarworks.sjsu.edu/spartandaily/3497/thumbnail ...
San Jose State University, School of Journalism and Mass Communications
core   +5 more sources

Enabling EVA for TOPCon: How Glass Frit Composition Governs Resistance to Acetic Acid–Induced Corrosion

open access: yesProgress in Photovoltaics: Research and Applications, EarlyView.
This work reveals that glass frit chemistry governs acetic‐acid‐induced corrosion and damp‐heat stability in LAF‐processed TOPCon modules. Compared with a Pb/B‐rich frit, a Ba/Zn‐modified frit preserves the Ag–Si interface, suppresses contact‐resistance increase and improves module reliability.
Jiexi Fu   +10 more
wiley   +1 more source

Restructuring of the Romanian Railways. The impact on the financial structure [PDF]

open access: yes
The restructuring process has defined the basis for developing a sustainable and modern railway system. Nevertheless, a long list of challenges has still to be addressed: difficulties to finance the maintenance of the assets and investment capabilities ...
Anduena FIRTAT
core  

Spartan Daily, March 4, 1983 [PDF]

open access: yes, 1983
Volume 80, Issue 23https://scholarworks.sjsu.edu/spartandaily/7005/thumbnail ...
San Jose State University, School of Journalism and Mass Communications
core   +1 more source

Ionogel Actuators: A Review

open access: yesSmartBot, EarlyView.
Ionogels dynamically and functionally couple ionic liquids with polymer networks, enabling multiscale programmable deformation and motion under electrical, magnetic, optical, thermal, humidity, and chemical stimuli. This article systematically elucidates the constituent components, structural design, and multiscale actuation mechanisms of ionogel ...
Dezhou Cao   +5 more
wiley   +1 more source

Home - About - Disclaimer - Privacy