Results 61 to 70 of about 800,531 (298)

Transient response enhancement method for DC-DC converters based on adaptive duty cycle adjustment

Ain Shams Engineering Journal
This article presents an adaptive duty cycle adjustment DC-DC converter for improving load transient response. The combination of adaptive clock control and DAC output variable reference voltage allows for rapid duty cycle saturation to further increase ...
Zhongjie Guo, Ziyi Qiu, Haoliang Wang, Ningmei Yu   +3 more
doaj   +1 more source

XTE J1739-302 as a Supergiant Fast X-ray Transient

, 2005
XTE J1739-302 is a transient X-ray source with unusually short outbursts, lasting on the order of hours. Here we give a summary of X-ray observations we have made of this object in outburst with the Rossi X-ray Timing Explorer (RXTE) and at a low level ...
Aleksandrovich N. L., Bamba A., Bodaghee A., C. B. Markwardt, Castro-Tirado A. J., Coe M. J., Cornelisse R., D. M. Smith, Halpern J. P., Halpern J. P., I. Negueruela, J. H. Swank, Krivonos R., L. Huss, Laurent P., Lutovinov A., Nagase F., Negueruela I., Pye J. P., Remillard R. A., Rodriguez J., Rupen M. P., Smith D. A., Smith D. M., Smith D. M., Smith D. M., Smith D. M., Sunyaev R. A., Sunyaev R. A., T. E. Harrison, W. A. Heindl, White N. E., Yamauchi S., ’t Zand J. J. M.   +33 more
core   +2 more sources

Mechanisms of IgE‐mediated food allergy and the role of allergen‐specific B cells

FEBS Letters, EarlyView.
Food allergy arises when allergen‐specific B cells preferentially produce immunoglobulin E (IgE) antibodies against harmless foods. This article explains the mechanisms driving IgE‐mediated reactions, highlights the central role of these B cells, and discusses how natural tolerance (NT) and oral immunotherapy (OIT) can reshape allergic immune responses.
Juan‐Felipe López, Özge Yilmaz Ardicli, Mübeccel Akdis   +2 more
wiley   +1 more source

Explaining the transient fast blue absorption lines in the massive binary system Eta Carinae

, 2011
We use recent observations of the He I $\lambda10830 \AA$ absorption line and 3D hydrodynamical numerical simulations of the winds collision, to strengthen the case for an orientation of the semimajor axis of the massive binary system Eta Carinae where ...
Amit Kashi, Blondin, Blondin, Corcoran, Corcoran, Damineli, Damineli, Damineli, Damineli, Davidson, Duncan, Fernandez-Lajus, Groh, Groh, Groh, Hamaguchi, Hillier, Kashi, Kashi, Kashi, Kashi, Kashi, Kashi, Kashi, Kashi, Kashi, Mehner, Muhammad Akashi, Nielsen, Noam Soker, Parkin, Pittard, Smith, Smith, Smith, Smith, Smith, Soker, Soker, Soker, Stevens, Sutherland, van Genderen, Weigelt, Whitelock   +44 more
core   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

FEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy, Trina Dykstra‐MacPherson, Mathias A. Bell, Peter L. Davies, Ruby May A. Sullan   +4 more
wiley   +1 more source

Charge and spin dynamics in interacting quantum dots

, 2010
The transient response of a quantum dot with strong Coulomb interaction to a fast change in the gate potential, as well as the stationary ac-response to a slow harmonic variation of the gate potential are computed by means of a real-time diagrammatic ...
Büttiker, Markus, Governale, Michele, König, Jürgen, Splettstoesser, Janine   +3 more
core   +1 more source

Probing the extragalactic fast transient sky at minute timescales with DECam [PDF]

, 2019
Searches for optical transients are usually performed with a cadence of days to weeks, optimised for supernova discovery. The optical fast transient sky is still largely unexplored, with only a few surveys to date having placed meaningful constraints on ...
Abbott, Timothy M. C., Andreoni, Igor, Bhandari, Shivani, Caleb, Manisha, Chang, Seo-Won, Cooke, Jeffrey, Cucchiara, Antonino, Farah, Wael, Flynn, Christopher M., Jankowski, Fabian, Keane, Evan F., Lien, Amy, Moriya, Takashi J., Möller, Anais, Onken, Christopher, Parthasarathy, Aditya, Petroff, Emily, Price, Daniel C., Pritchard, Tyler A., Ravasio, Maria Edvige, Rest, Armin, Ryder, Stuart, Vohl, Dany, Webb, Sara, Wolf, Christian   +24 more
core   +3 more sources

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

FEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura, Shin‐ichi Tate, Kyota Yasuda   +2 more
wiley   +1 more source

Experimental characterization and modelling of a cavitating centrifugal pump operating in fast start-up conditions [PDF]

, 2010
The start-up of rocket engine turbopumps is generally performed only in a few seconds. It implies that these pumps reach their nominal operating conditions after only a few rotations.
Bois, Gérard, Caignaert, Guy, Coutier-Delgosha, Olivier, Dazin, Antoine, Duplaa, Sébastien   +4 more
core   +1 more source

Hyperosmotic stress induces PARP1‐mediated HPF1‐dependent mono(ADP‐ribosyl)ation

FEBS Letters, EarlyView.
Sorbitol‐induced hyperosmotic stress rapidly induces reversible mono(ADP‐ribosyl)ation (MARylation) on PARP1 without the signs of genotoxic signaling. We show that PARP1 autoMARylation is HPF1 dependent and forms hydroxylamine‐resistant O‐glycosidic linkages.
Anna Georgina Kopasz, Mihály Mérey, Rebeka Vásárhelyi, Ramóna Pék, Victor Imburchia, László Henn, Adrián Kószó, Nicholas D. Lakin, Ivan Ahel, Sébastien Huet, Ágnes Czibula, Gyula Timinszky   +11 more
wiley   +1 more source