Results 1 to 10 of about 320,868 (280)
Infrastructures, 2022 In modern transportation projects, the demand for skewed bridges is increasing. Restrictive site constraints, particularly in urban infrastructure projects, yield severely skewed bridges that demand specific design and construction considerations.
Jessica Mawson +4 more
doaj +1 more source
Machines, 2022 The operating condition and structural state of the converter transformer are closely related to vibration. Abundant harmonics aggravate the vibration of windings and iron cores, resulting in frequent mechanical structural failures, which seriously ...
Peiyu Jiang +3 more
doaj +1 more source
Research on localization of partial discharges in transformers based on wideband equivalent circuit
Zhejiang dianli, 2023 When partial discharge occurs within transformers， the pulse current signal propagates along the winding. Detecting this pulse current signal at both ends of the winding enables the identification of partial discharge within the transformer. To this end，
ZHOU Chenhui +6 more
doaj +1 more source
Strand wire winding method in a solenoidal coil with limited geometry for good impedance matching [PDF]
Archives of Electrical Engineering, 2023 This paper reports a new strand wire winding method in a solenoidal coil with limited geometry that enables good impedance matching. In the proposed method strand wires are wound layer-by-layer on top of each other allowing one to set equivalent ...
Veli Tayfun Kilic
doaj +1 more source
Development and Characterization of Hybrid, Temperature Sensing and Heating Yarns with Color Change
Sensors, 2023 A person’s body temperature is an important indicator of their health status. A deviation of that temperature by just 2 °C already has or can lead to serious consequences, such as fever or hypothermia.
Theresa Junge +4 more
doaj +1 more source
Effect of Magnetic Properties of Magnetic Composite Tapes on Motor Losses
Energies, 2022 Alternating current (AC) copper losses in motors increase with carrier frequency of the pulse width modulation (PWM) and are further increased by leakage flux of the permanent magnet. Therefore, AC copper losses increase with motor speed.
Ryo Yoshida +9 more
doaj +1 more source
Plants, 2020 During a 33-year sampling period, we observed species richness and calculated species evenness and Shannon Diversity for understory woody seedlings and herbaceous species on three small islands in Lake Winnipesaukee, New Hampshire, and noted consistency ...
Marjorie M. Holland, Mark Winkler
doaj +1 more source
IEEE Access, 2023 Power transformers are inevitably subjected to external short circuit impact during their service period. The electromagnetic force generated by the fault current may cause winding destabilization and collapse.
Qiang Ou +4 more
doaj +1 more source
Probe of process of multiple-loop chains of parallel and consecutive joints [PDF]
E3S Web of Conferences, 2020 The article describes the formation of low-frequency currents in ferromagnetic oscillatory circuits. As a result of parallel and serial connection of multi-loop ferroresonance circuits, the frequencies of harmonics of the second-order amplitude of soft ...
Shаymamоv B. +4 more
doaj +1 more source
Lives Saved Tool (LiST) costing: a module to examine costs and prioritize interventions
BMC Public Health, 2017 Background Achieving the Sustainable Development Goals will require careful allocation of resources in order to achieve the highest impact. The Lives Saved Tool (LiST) has been used widely to calculate the impact of maternal, neonatal and child health ...
Lori A. Bollinger +3 more
doaj +1 more source