Results 41 to 50 of about 1,188,640 (287)

Influence of machine topology and cross-coupling magnetic saturation on rotor position estimation accuracy in extended back-EMF based sensorless PM brushless AC drives [PDF]

, 2007
The influence of the machine topology and dq-axis cross-coupling on the rotor position estimation error in an extended back-EMF based sensorless brushless AC drive is investigated by both finite element analysis and experimentally on four brushless AC ...
Bingham, Chris, Howe, D, Li, Y, Stone, D A, Zhu, Z Q   +4 more
core   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

Assembly of (hetero)aryl sulfilimines via copper-catalyzed enantioselective S-arylation of sulfenamides with (hetero)aryl Iodides

Nature Communications
The (hetero)aryl sulfoximines are important structures for developing bioactive molecules, whose synthesis relies on oxidation of (hetero)aryl sulfilimines. However, asymmetric approaches for assembling (hetero)aryl sulfilimines are still rare.
Mingchuang He, Rongxing Zhang, Tongkun Wang, Xiao-Song Xue, Dawei Ma   +4 more
doaj   +1 more source

The role of the N*(1535) resonance and the pi^- p --> KY amplitudes in the OZI forbidden pi N --> phi N reaction [PDF]

, 2008
We study the pi N --> phi N reaction close to the phi N threshold within the chiral unitary approach, by combining the pi^- p --> K^+ Sigma^-, pi^- p --> K^0 Sigma^0 and pi^- p --> K^0 Lambda amplitudes with the coupling of the phi to the K components of
A. Baldini, A. I. Titov, A. W. Thomas, B. C. Liu, B. S. Zou, E. Oset, F. Klingl, M. Döring   +7 more
core   +3 more sources

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source

Stereoretentive radical cross-coupling

Nature
Free radicals were first discovered over 120 years ago by Gomberg and the first radical cross-couplings demonstrated by Kochi in the 1970's. Fueled by the need for general methods to couple C(sp3)-fragments, this area has seen an explosion of renewed interest.
Jiawei Sun, Jiayan He, Luca Massaro, David A. Cagan, Jet Tsien, Yu Wang, Flynn C. Attard, Jillian E. Smith, Jason S. Lee, Yu Kawamata, Phil S. Baran   +10 more
openaire   +2 more sources

$\pi$NN coupling and two-pion photoproduction on the nucleon

, 2002
Effects of non-resonant photoproductions arising from two different $\pi NN$ couplings are investigated in the $\gamma N\to\pi\pi N$ reaction. We find that the pseudoscalar (PS) $\pi NN$ coupling is generally preferable to the pseudovector (PV) $\pi NN ...
A. Braghieri, A. Piazza, A. Zabrodin, D. Drechsel, E. Ferrari, E. Oset, F. Carbonara, F. Härter, G. Gialanella, I. Blomqvist, J.A.G. Tejedor, J.A.G. Tejedor, J.C. Nacher, J.C. Nacher, K. Ochi, L. Montanet, M. Arima, M. Betz, M. Hirata, M. Wolf, Michihiro Hirata, Nobuhiko Katagiri, S. Kondratyuk, Takashi Takaki, W. Langgärtner   +24 more
core   +1 more source

Cross thermoelectric coupling in normal-superconductor quantum dots [PDF]

, 2015
We discuss the nonlinear current of an interacting quantum dot coupled to normal and superconducting reservoirs with applied voltage and temperature differences.
Hwang, Sun-Yong, Lopez, Rosa, Sanchez, David   +2 more
core   +2 more sources

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

FEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka, Yuxi Liu, Stefano Maggi, Debnath Ghosal, Jue Wang, Prashant P. Damke, Stephen D. Carter, Wei Zhao, Sukhithasri Vijayrajratnam, Joseph P. Vogel, Carrie L. Shaffer, Grant J. Jensen   +11 more
wiley   +1 more source

Towards the total synthesis of chondrochloren A: synthesis of the (Z)-enamide fragment

Beilstein Journal of Organic Chemistry, 2020
The stereoselective synthesis of the (Z)-enamide fragment of chondrochloren (1) is described. A Buchwald-type coupling between amide 3 and (Z)-bromide 4 was used to generate the required fragment.
Jan Geldsetzer, Markus Kalesse
doaj   +1 more source