Results 41 to 50 of about 141,507 (255)

Research on Single Tube Inverter Wireless Power Supply System for LED Lamp Inroadway

open access: yesJournal of Harbin University of Science and Technology, 2020
In view of the inconvenient replacement of lamps and existing safety problems when using wired way to supply power to LED lamps in the roadway, this paper focuses on a wireless power supply device for LED lamps in the roadway.
WANG Songbai   +3 more
doaj   +1 more source

Roadway and Traffic Attributes Influencing Occupancy Time of Minor-Road Right-Turning Vehicles at Urban Uncontrolled Intersections

open access: yesU.Porto Journal of Engineering, 2023
The performance of uncontrolled intersection is usually measured based on delay of the least priority movement. Perhaps, most of the studies assumed single stage crossing and had to overlook additional factors for estimating occupancy time.
Ramesh Babu Kota, Arpan Mehar
doaj   +1 more source

Residential proximity to major roadways and prevalent hypertension among postmenopausal women: results from the Women's Health Initiative San Diego Cohort. [PDF]

open access: yes, 2014
BackgroundLiving near major roadways has been linked with increased risk of cardiovascular events and worse prognosis. Residential proximity to major roadways may also be associated with increased risk of hypertension, but few studies have evaluated this
Adams, Marc A   +9 more
core   +1 more source

Multiple injection techniques to stimulate complex fracture networks in coal reservoirs: A case study on gas disaster reduction of subsurface coal mine in southwest China

open access: yesDeep Underground Science and Engineering, EarlyView.
An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang   +5 more
wiley   +1 more source

Research on stope equivalent hole model and rotation law of principal stress

open access: yesMeitan xuebao, 2023
Aiming at the problems of serious asymmetric damage phenomenon of roadway on the side of stope and unclear rotation law of principal stress around roadway, the relationship between the rotation of principal stress around roadway and the asymmetric damage
Hongtao LIU   +6 more
doaj   +1 more source

Unstable Slope Management Program [PDF]

open access: yes, 2009
INE/AUTC 11 ...
Calvin, Peter   +2 more
core  

Gaborlet‐guided sparse filtering: A novel intelligent method for lithology identification by vibration signals while drilling

open access: yesDeep Underground Science and Engineering, EarlyView.
The flowchart illustrates rock specimen testing, vibration signal acquisition, and feature extraction with Gaborlet and sparse filtering for classification. Abstract Traditional lithology identification methods mainly rely on core sampling and well‐logging data.
Jian Hao   +5 more
wiley   +1 more source

Research progress on bolt support theory and technology of coal mine roadway in China

open access: yesMeikuang Anquan, 2023
With the increasing depth of roadway and the complexity of mine environment in China, the challenge of roadway bolt support will be more serious. Based on the investigation of relevant literature, the related theories of roadway bolt support were ...
TANG Jinzhao, FAN Lidan, ZHANG Jiyun, XU Feng, YU Liwei, YANG Jie, ZHAO Wei
doaj   +1 more source

Performance of a New Enhanced Topological Decision-Rule Map-Matching Algorithm for Transportation Applications [PDF]

open access: yes, 2012
Indexación: Web of Science; ScieloMap-matching problems arise in numerous transportation-related applications when spatial data is collected using inaccurate GPS technology and integrated with a flawed digital roadway map in a GIS environment. This paper
Blazquez, C., Miranda, P., Ponce, A.
core   +1 more source

Fracture evolution of a thick soft protection layer and the water inrush mechanism in overburden under longwall mining

open access: yesDeep Underground Science and Engineering, EarlyView.
Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu   +4 more
wiley   +1 more source

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