Results 11 to 20 of about 241,915 (134)

Galloping Simulation of Plural Spans of the Power Transmission Line for Load Design of Pylon [PDF]

open access: yes한국정밀공학회지, 2019
When wind load acts on the Power Transmission Line (PTL) with asymmetric cross section from icing and snowing, the generated vibration is termed ‘galloping phenomenon’.
Yun Ji Oh   +3 more
doaj   +1 more source

A compact incoherent broadband cavity-enhanced absorption spectrometer for trace detection of nitrogen oxides, iodine oxide and glyoxal at levels below parts per billion for field applications [PDF]

open access: yesAtmospheric Measurement Techniques, 2020
We present a compact, affordable and robust instrument based on incoherent broadband cavity-enhanced absorption spectroscopy (IBBCEAS) for simultaneous detection of NOx, IO, CHOCHO and O3 in the 400–475 nm wavelength region.
A. Barbero   +5 more
doaj   +1 more source

Design and characteristics analysis of a new vibration reduction system for in service long span transmission tower

open access: yesScientific Reports, 2022
The wind-induced fatigue is the main factor leading to reduction of the bearing capacity of long-span transmission towers. In order to reduce the harm of wind vibration, this paper takes the 500 kV Jiamusi region ISLSTT (in service long span transmission
Jinghua Liu   +4 more
doaj   +1 more source

Towards a System Theoretic Approach to Wireless Network Capacity in Finite Time and Space [PDF]

open access: yes, 2013
In asymptotic regimes, both in time and space (network size), the derivation of network capacity results is grossly simplified by brushing aside queueing behavior in non-Jackson networks.
Ciucu, Florin   +4 more
core   +2 more sources

Predicting wildfire ignition induced by dynamic conductor swaying under strong winds

open access: yesScientific Reports, 2023
During high wind events with dry weather conditions, electric power systems can be the cause of catastrophic wildfires. In particular, conductor-vegetation contact has been recognized as the major ignition cause of utility-related wildfires.
Xinyue Wang, Paolo Bocchini
doaj   +1 more source

A monolithic MQW InP-InGaAsP-Based optical comb generator [PDF]

open access: yes, 2007
We report the first demonstration of a monolithic optical-frequency comb generator. The device is based on multi-section quaternary/quaternary eight-quantum-well InP-InGaAsP material in a frequency-modulated (FM) laser design. The modulation is generated
Cannard, P   +8 more
core   +1 more source

Invasive Group A streptococcal infections: are we facing a new outbreak? A case series with the experience of a single tertiary center

open access: yesItalian Journal of Pediatrics, 2023
Background In pediatric age, Group A Streptococcus (GAS) is responsible for a wide spectrum of clinical manifestations, from mild localized infections to life-threatening invasive diseases.
Nicolò Garancini   +8 more
doaj   +1 more source

Dynamic circulating-loop methods for transmission experiments in optically transparent networks [PDF]

open access: yes, 2008
Recent experiments incorporating multiple fast switching elements and automated system configuration in a circulating loop apparatus have enabled the study of aspects of long-haul WDM transmission unique to optically transparent networks.
Barry, Liam P.   +3 more
core   +1 more source

Study on electric field distribution characteristics of the maintenance area when UHV AC transmission line crossing 220 kV tower

open access: yesThe Journal of Engineering, 2019
With the rapid development of China's power grid, it is becoming increasingly common that the multi-circuit overhead transmission lines cross over each other.
Feng Huo   +4 more
doaj   +1 more source

Full-Asynchronous Gigabit-Symmetric DPSK Downstream and OOK Upstream OCDMA-PON with Source-Free ONUs Employing All-Optical Self-Clocked Time Gate [PDF]

open access: yes, 2012
We propose an asynchronous gigabit-symmetric optical code division multiplexing access passive optical network (OCDMA-PON) in which optical network units (ONUs) are source-free. In the experiment, we demonstrate a duplex OCDMA system with a 50 km 10 Gbit/
Dai, Bo   +3 more
core   +1 more source

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