Results 51 to 60 of about 8,454,807 (248)
IET Power Electronics, 2021 The reduced switch count multilevel inverter (RSC‐MLI) is the latest trend in power electronic converters due to reduction in the switch count and cost.
G. Eshwar Gowd +2 more
doaj +1 more source
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
High Efficiency Power Amplifier Based on Envelope Elimination and Restoration Technique [PDF]
, 2010 Due to complex envelope and phase modulation employed in modern transmitters it is necessary to use power amplifiers that have high linearity. Linear power amplifiers (classes A, B and AB) are commonly used, but they suffer from low efficiency especially
Alou Cervera, Pedro +9 more
core
The ubiquitin system in normal and infected germinal center B cells
FEBS Letters, EarlyView.The ubiquitin system plays a central role in germinal center (GC) B cells, influencing differentiation to long‐lived memory B cells. Oncogenic gammaherpesviruses gain access to memory B cells by establishing latency in GC B cells. Mapping ubiquitin mechanisms in normal and infected GC B cells will define specific molecular circuits in B cells germane ...
Destiny Davis +2 more
wiley +1 more source
High-Frequency Modified Bridgeless AC-DC PFC Rectifier for Ceiling-Fan
e-Prime: Advances in Electrical Engineering, Electronics and EnergyHigh current percentage total harmonics distortion (%THD), low supply power factor (SPF), and high input-power are main concern in an existing brushless direct current motor ceiling-fan (BLDCMCF).
Amit Kumar, Bhim Singh
doaj +1 more source
Efficiency modeling for MHz DCDC converters at 40 V input voltage range [PDF]
Advances in Radio Science, 2014 Size and cost of a switched mode power supply can be reduced by increasing the switching frequency. This leads especially at a high input voltage to a decreasing efficiency caused by switching losses. Conventional calculations are not suitable to predict
J. Wittmann, A. Seidel, B. Wicht
doaj +1 more source
Membrane composition and thermodynamic identity as boundaries of life for synthetic cell research
FEBS Letters, EarlyView.What makes a cell a cell? The boundary of a living cell is not just a wall. Read as a Markov blanket, the membrane separates internal from external states, generating identity and non‐equilibrium order. Can this identity be rebuilt from scratch in a synthetic cell?
Caterina Presutti, Bert Poolman
wiley +1 more source
Knowledge acquisition in supply chain partnerships: the role of power [PDF]
, 2012 Knowledge is recognised as an important source of competitive advantage and hence there has been increasing academic and practitioner interest in understanding and isolating the factors that contribute to effective knowledge transfer between supply chain
Ghobadian, A +8 more
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Molecular Oncology, EarlyView.Dormant cancer cells can hide in distant organs for years, evading treatment and the immune system. This review highlights how signals from the surrounding tissue and immune environment keep these cells inactive or trigger their reawakening. Understanding these mechanisms may help develop therapies to eliminate or control dormant cells and prevent ...
Kanishka Tiwary +1 more
wiley +1 more source
Switched Mode Power Supply Designs
, 2014 Tato diplomová práce se zabývá samotným návrhem a realizací napěťových měničů 24/12V a 24/48V s výkonem 60W. Úvod práce je zaměřen na teoretický úvod do problematiky spínaných zdrojů. V části je stručně popsáno blokové schéma spínaných zdrojů a porovnány
Kunčar, Aleš
core +2 more sources