Results 51 to 60 of about 201,186 (292)
Numerical Study on Natural Convective Heat Transfer of Nanofluids in Disc-Type Transformer Windings
IEEE Access, 2019 Nanofluid is an innovative approach to improve the thermal conductivity of fluid by adding nanoparticles. Transformer oil-based nanofluids have been prepared and measured, which verifies the concept and demonstrates the potential in oil-immersed power ...
Yunpeng Zhang +4 more
doaj +1 more source
FEBS Letters, EarlyView.Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell +2 more
wiley +1 more source
Известия Томского политехнического университета: Инжиниринг георесурсов, 2019 The relevance of the study. The phenomenon of internal resonance was not taken into consideration by any executive directive in the World when reasoning the necessary level of longitudinal insulation.
Leonid Nykonets +2 more
doaj +2 more sources
Structural and biochemical analysis of a B12 superbinder
FEBS Letters, EarlyView.BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices +3 more
wiley +1 more source
Investigation of wave processes of transformer windings as a distributed electric circuit
Известия Томского политехнического университета: Инжиниринг георесурсов, 2019 Relevance of the work is caused by the need of localize the defects of the transformer windings at diagnosis. It is possible to determine the spatial location of the defects along the transformer winding only if the transformer is considered as a system ...
Yusup Niyazbekovich Isaev +2 more
doaj +2 more sources
Features of the high frequency power transformer calculation
Nauka ta progres transportu, 2013 Purpose. The windings of power transformers have low resistance value and a most inductance, which reduces the rate of rise of current in the windings.
D.A. Zabarilo
doaj
Oil-cooled transformer hot spot temperature reduction using windings height optimum design
International Journal of ThermofluidsTransformers are used in transmission and distribution of electrical energy in the power network. Thus, electrical and physical optimization of transformers are important.
Mohammad Ali Taghikhani
doaj +1 more source
The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation
FEBS Letters, EarlyView.Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge +6 more
wiley +1 more source
Análise de transitórios elétricos em transformadores através do método TLM [PDF]
, 2003 Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Elétrica.Este trabalho apresenta a aplicação eficiente do método numérico TLM- Transmission Line Method na solução dos principais ...
Cabral, Sérgio Henrique Lopes
core
Artificial molecular machines and motors—Design and control of nanoscale motion
FEBS Letters, EarlyView.Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley +1 more source