Results 11 to 20 of about 144,974 (202)

Modal Characteristics of Two Operating Power Transmission Poles [PDF]

open access: yesShock and Vibration, 2010
Unique conductor-pole couplings complicate the dynamic behaviors of electric transmission pole line systems. Finite element modeling is performed on two typical transmission poles used in southeastern USA – a steel pole and a prestressed concrete pole ...
Shen-En Chen, Kaoshan Dai
doaj   +2 more sources

An NDT Method for Measuring the Diameter and Embedment Depth of the Main Rebar in Cement Poles Based on Rotating Permanent Magnet Excitation [PDF]

open access: yesSensors
Cement poles serve as supporting components for transmission lines and are widely used in medium- and low-voltage transmission networks. The main rebar is the primary load-bearing structure of the pole, and the accurate measurement of its diameter and ...
Hejia Wang   +5 more
doaj   +2 more sources

Extension of pole differential current based relaying for bipolar LCC HVDC lines [PDF]

open access: yesScientific Reports
Line commutated converter (LCC) based high-voltage direct current (HVDC) transmission is characterized by long-distance power transfer, a complex and harsh corridor environment, and the rapid fault evolution of DC lines.
Ravi Shankar Tiwari   +3 more
doaj   +2 more sources

Production of minicell-like structures by Escherichia coli biosynthesizing cadmium fluorescent nanoparticles: a novel response to heavy metal exposure [PDF]

open access: yesJournal of Nanobiotechnology
The bacterial synthesis of fluorescent semiconductor nanoparticles or quantum dots (QDs), presents a sustainable method for producing nanomaterials with customized optical properties and significant technological potential.
Felipe Valenzuela-Ibaceta   +2 more
doaj   +2 more sources

Ohm’s law lost and regained: observation and impact of transmission and velocity zeros [PDF]

open access: yesNature Communications
The quantum conductance and its classical wave analogue, the transmittance, are given by the sum of the eigenvalues of the transmission matrix. However, neither measurements nor theoretical analysis of the transmission eigenchannels have been carried out
Krishna Joshi   +3 more
doaj   +2 more sources

FRP Poles: A State-of-the-Art-Review of Manufacturing, Testing, and Modeling

open access: yesBuildings, 2022
Fiber-reinforced polymers poles were on the increase because they were lightweight, have high strength-to-weight ratios, provide corrosion resistance, can be customized to meet strength and deflection requirements, and have a low life-cycle cost of ...
Ahmed M. EL-Fiky   +6 more
doaj   +1 more source

Molecular Phylogeny of Selected Kenyan Eucalyptus Species Inferred from MatK, rbcL and TrnL-F Genes and Their Suitability for Power Transmission Poles

open access: yesDiversity, 2022
Genus Eucalyptus belongs to the family Myrtaceae and consists of more than 900 species, various hybrids and varieties. The major species that are grown in Kenya are Eucalyptus grandis, E. globulus, E. saligna and E. camaldulensis. Most Eucalyptus species
Daisy Chebet   +4 more
doaj   +1 more source

Centrifugal concrete poles for transmission lines reinforced with prestressed FRP rebar [PDF]

open access: yesE3S Web of Conferences, 2023
Reinforced with steel rebar concrete centrifuged conical poles for power transmission poles receive corrosion damage to steel reinforcement during operation. These damages can lead to the failure of structures.
Kudyakov Konstantin, Buchkin Andrey
doaj   +1 more source

Dual-Band Bandpass Filter With Controllable Stopband Bandwidth

open access: yesFrontiers in Physics, 2022
A novel dual-band bandpass filter (BPF) is proposed with independently controllable transmission zeros (TZs) which can realize widely tunable stopband bandwidth (BW).
Nan Wang   +8 more
doaj   +1 more source

Comparative Analysis of Slenderness Ratio Calculation Methods of Cross Bracings for Towers Between China and EU Overhead Transmission Line Standards

open access: yes南方能源建设, 2023
[Introduction] This paper aims to effectively avoid the design quality problems caused by the difference between domestic and foreign engineering design specifications. The study makes comparative analysis of slenderness ratio of cross bracings for angle
Molin SUN   +3 more
doaj   +1 more source

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