Results 41 to 50 of about 1,804,197 (247)

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

FEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure, Misaki K. Nishio, Satoru Okuda, Kohji Hotta   +3 more
wiley   +1 more source

Output Voltage Regulation Technique Applied to an Unregulated Isolated DC-DC Converter for Wide Input Voltage Variations

IEEE Open Journal of Power Electronics
This paper introduces a voltage regulation technique for an isolated power electronic converter that interconnects multiple transformers in series or parallel configurations using switches.
Joan Giles, Alberto Rodriguez, Aitor Vazquez, Jairo T. Diaz, J. M. Bermejo, B. Zelaa, D. Ortega, Igor Larrazabal   +7 more
doaj   +1 more source

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

FEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace, Alyssa Borges, Charles Arnaud, Tove Karlsson, Nina K. Bröker, Stefanie Barbirz, Marta Bally   +6 more
wiley   +1 more source

Isolated Multi-Port DC-DC Converters for Renewable Energy Sources: A Review

IEEE Access
Multi-port DC-DC converters (MPCs) become increasingly popular in power conversion for renewable energy sources (RESs), battery storage systems (BSSs), and electric vehicles (EVs).
Alireza Asadi, Xiaodong Liang, Sobhan Sarani, Mohammad Saleh Karimzadeh   +3 more
doaj   +1 more source

Bidirectional DC-DC converter circuits and smart control algorithms: a review

Journal of Electrical Systems and Information Technology, 2022
The entire article has been dedicated to cover the current state of the art in bidirectional DC-DC converter topologies and its smart control algorithms, identified the research gaps and concluded with the motivation for taking up the work. It covers the
V. Viswanatha, A. C. Ramachandra, R. Venkata Siva Reddy   +2 more
doaj   +1 more source

Reconstructing enzyme evolution by protein engineering

FEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler, Markus R. Busch, Reinhard Sterner   +2 more
wiley   +1 more source

Microgrid power electronic converters: state of the art and future challenges

, 2009
This paper presents a review of the state of the art of power electric converters used in microgrids. The paper focuses primarily on grid connected converters.
Sharkh, S.M., Boltryk, R.J., Jamil, M., Hussain, B., Abu-Sara, M.   +4 more
core   +1 more source

Comparison study of inductors current sharing in non-isolated and isolated DC-DC converters with interleaved structures

, 2005
Current sharing is an important issue in both isolated and non-isolated dc-dc converters. In the paper, average current sharing is modelled and analyzed for both interleaved multi-phase buck converters and isolated dc-dc converters with current doubler ...
Mao, Hong, Yao, Liangbin, Liu, Jun, L. Yao, J. Liu, I. Batarseh, H. Mao   +6 more
core   +1 more source

Ligand‐dependent transcriptional heterogeneity in cell cycle gene expression delays G1/S entry

FEBS Letters, EarlyView.
EGF and HRG induce distinct G1/S progression programs in ErbB2‐amplified BT474 breast cancer cells. Despite activating the potent ErbB2–ErbB3 heterodimer, HRG does not accelerate cell‐cycle entry. Instead, EGF promotes earlier restriction‐point passage via ERK–FOS signaling, whereas HRG activates the AKT–MYC axis, driving transcriptional heterogeneity ...
Ririn Rahmala Febri, Ayaka Nagasato‐Ichikawa, Keita Iida, Shuhei Kimura, Akira Imamoto, Mariko Okada   +5 more
wiley   +1 more source

A Hybridization of Cuk and Boost Converter Using Single Switch with Higher Voltage Gain Compatibility

Energies, 2020
In the current era, the desire for high boost DC-to-DC converter development has increased. Notably, there has been voltage gain improvement without adding extra power switches, and a large number of passive components have advanced. Magnetically coupled
M. Karthikeyan, R. Elavarasu, P. Ramesh, C. Bharatiraja, P. Sanjeevikumar, Lucian Mihet-Popa, Massimo Mitolo   +6 more
doaj   +1 more source