Results 71 to 80 of about 265,688 (306)

Hybrid and modular multilevel converter designs for isolated HVDC–DC converters [PDF]

, 2018
Efficient medium and high-voltage dc-dc conversion is critical for future dc grids. This paper proposes a hybrid multilevel dc-ac converter structure that is used as the kernel of dc-dc conversion systems.
Adam, G.P., Ahmed, Shehab, Gowaid, I.A., Massoud, Ahmed M., Williams, B.M.   +4 more
core   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Chameleon sequences reveal structural effects in proteins representing micelle‐like distribution of hydrophobicity

FEBS Open Bio, EarlyView.
Amino acids sequence of two different proteins with the same sequence (chameleon sequence—black boxes) represent in 3D structure of the proteins different secondary structures: HHHH—helical and BBB—Beta‐structural. The chains folded in water environment adopt different III‐order structures in which the chameleon fragments appear to adopt similar status
Irena Roterman, Katarzyna Stapor, Leszek Konieczny, Krzysztof Gądek, Piotr Nowakowski   +4 more
wiley   +1 more source

Early slight inter-turn short circuit fault diagnosis of axial flux stator coreless permanent magnet motor based on phase difference [PDF]

Journal of Hebei University of Science and Technology
Aiming at the problem of early inter-turn short circuit fault of axial flux stator coreless motor, a method for early inter-turn short circuit fault diagnosis and positioning of axial flux stator coreless motor based on the phase difference of zero ...
Xiaoguang WANG, Mengkai CHEN, Yifan ZHOU, Mingqiang YUE, Yahong CHEN   +4 more
doaj   +1 more source

Контроль изоляции конденсаторного типа неравновесно-компенсационным методом при неполнореакторном режиме электропередачи 750 кВ [PDF]

, 2007
Проведено перевірку можливості здійснення контролю ізоляції конденсаторного типу пристроями, що реалізують нерівноважно-компенсаційний метод, в умовах існування тривалого неповнореакторного режиму електропередачі 750 кВ без корекції пристроїв з ...
Веприк, Юрий Николаевич, Минченко, Анатолий Андреевич, Минченко, Андр. А.   +2 more
core  

Analysis of drawbacks and constraints of classification algorithms for three-phase voltage dips [PDF]

, 2018
Voltage events are one of the most common and harmful disturbances of power electric systems. Voltage dips, swells and interruptions are included under this heading.
Carrica, Daniel Oscar, Carugati, Ignacio, Donato, Patricio Gabriel, Maestri, Sebastian Oscar, Orallo, Carlos Martin, Strack, Jorge Luis   +5 more
core   +1 more source

Emerging insights into CC and CXC chemokines and their receptors in Mycobacterium tuberculosis infection

FEBS Open Bio, EarlyView.
The dual roles of CC and CXC chemokines in distinguishing active, latent, and subclinical tuberculosis were reviewed, along with an evaluation of their potential as diagnostic biomarkers and therapeutic targets to advance precision medicine in tuberculosis management. The graphical abstract was generated with AI assistance (Gemini 3.0).
Xuying Yin, Dangsheng Xiao, Jiezuan Yang
wiley   +1 more source

Non-Directional Earth Fault Passage Indication in Isolated Neutral Distribution Networks

Energies, 2020
In this paper, two new methods for locating single-phase to ground faults in isolated neutral distribution networks are proposed. The methods are based on the analysis of symmetrical sequence currents.
Amir Farughian, Lauri Kumpulainen, Kimmo Kauhaniemi   +2 more
doaj   +1 more source

Realization of an Inductance Scale Traceable to the Quantum Hall Effect Using an Automated Synchronous Sampling System [PDF]

, 2010
In this paper, the realization of an inductance scale from 1~$\mu$H to 10~H for frequencies ranging between 50~Hz to 20~kHz is presented. The scale is realized directly from a series of resistance standards using a fully automated synchronous sampling ...
, B Jeanneret, Bohàček J, Cutkosky R D, F Overney, Hague B, Hutzli J, Kibble B P, Overney F, Overney F, Rayner G H Kibble B P Swan M J, Taylor B N, Zapf T L   +12 more
core   +1 more source

Directed evolution of enzymes at the crossroads of tradition and innovation

FEBS Open Bio, EarlyView.
An iterative cycle of data‐driven enzyme optimization comprising four stages: genetic diversification of a template enzyme, expression of protein variants, high‐throughput evaluation, and machine‐learning‐guided redesign of the next variant library.
Maria Tomkova, Andrej Mirossay, Erik Sedlak   +2 more
wiley   +1 more source