Results 81 to 90 of about 179,350 (249)

The influence of welded joint quality on safety and reliability in operation

open access: yesProduction Engineering Archives, 2013
The quality of welded joint is an assumption of long-term reliability in operation. On the contrary, defective work of bad quality welded joint leads to fracture and crashes of plants.
Otakar Bokůvka   +4 more
doaj  

Chromatic aberrations in Eurasian Coot (Fulica atra): new record and a review from Italy suggest a cautious approach in diagnoses

open access: yesRivista Italiana di Ornitologia - Research in Ornithology
We report a case of chromatic aberration (progressive greying) of a Eurasian Coot (Fulica atra) from a drainage canal neighbouring a recently restored wetland from Latium, central Italy (third case for this rail at the regional level).
Giuseppe Dodaro   +2 more
doaj   +1 more source

Multimodal Quad‐Finger Soft Robotic Hand With Dual‐Chamber Origami Actuator for Large‐Workspace Manipulation

open access: yesAdvanced Intelligent Systems, EarlyView.
A multimodal quad‐finger soft robotic hand (QDO hand) uses dual‐chamber straight–curved origami prismatic (SCOP) origami actuators. By coordinating positive and negative pressurization in the two chambers, each finger produces axial extension, contraction and bidirectional bending.
Qinlin Tan   +6 more
wiley   +1 more source

THE MATHEMATICAL DESCRIPTION OF THE FORCE OF INTERACTION BETWEEN WHEELS AND RAILS

open access: yesNauka ta progres transportu, 2009
In the article the mathematical description of force interaction of wheels and rails is offered as well as the description of some indices of traffic safety of rail vehicles is performed.
L. N. Dehtiaryova   +2 more
doaj  

Solution to the problem of contact between a double-cone and two eccentric circular rails used in the construction of a wave-powered electrical generator

open access: yesNihon Kikai Gakkai ronbunshu, 2017
In this paper, a mechanism consisted of a double-cone rolling on two divergent-convergent rails is proposed to be used in the construction of a wave-powered electrical generator. Such divergent-convergent rails, attached to a buoy, can be materialized by
Barenten SUCIU
doaj   +1 more source

Rail Carriers, 2006 - VIA Rail

open access: yes, 2010
In 2006 there were 48 068 kilometres of railways, stretching from the Atlantic to the Pacific oceans. The two largest Class 1 carriers, Canadian National Railway Company (CN) which owns or leases 22 686 kilometres of railways and Canadian Pacific Rail Company (CPR) which owns or leases 12 812 kilometres.
openaire   +1 more source

Respirable Dust Exposure in Western Australian Mining: Trends, Variability, and Implications for Occupational Health

open access: yesAmerican Journal of Industrial Medicine, EarlyView.
ABSTRACT Background Mining workers are exposed to a range of respiratory hazards, including respirable dust. While exposure to respirable crystalline silica in the mining industry has been found to be common, less is known about trends in measured levels of exposure to respirable dust overall.
Renee N. Carey   +4 more
wiley   +1 more source

ELECTRODYNAMICS OF TRANSMISSION AND LOSSES OF POWER IN THE DEVICES OF ELECTRIC TRACTION SYSTEMS

open access: yesNauka ta progres transportu, 2014
Purpose. Theoretical justification of the "field" approach (based on electromagnetic field) to the transmission and losses of power in the devices of traction power supply systems and electric rolling stock. Methodology.
M. O. Kostin
doaj  

The continuously supported rail subjected to an axial force and a moving load [PDF]

open access: yes
Axial compression force effects in welded rails on critical velocity for high speed ...
Kerr, A. D.
core   +1 more source

Status of ITER neutral beam cell remote handling system

open access: yes, 2013
The ITER neutral beam cell will contain up to three heating neutral beams and one diagnostic neutral beam, and four upper ports. Though manual maintenance work is envisaged within the cell, when containment is breached, or the radiological protection is ...
Belcher, C   +11 more
core   +1 more source

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