Results 71 to 80 of about 416,241 (289)

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

A CHEAP ZILOG MP APPLIED TO SPREAD SPECTRUM SYSTEMS DESIGN

Journal of Engineering and Sustainable Development, 2018
The Z2000 Evaluation Board performing direct sequence spread spectrum processing, a 900 MHz radio receiver, and a transmitter module was applied to build a Direct sequence spread spectrum transceiver, RF board was designed & implemented for the purpose ...
Rajaa aldeen Abad Khalid
doaj  

Channel Sounding for the Masses: Low Complexity GNU 802.11b Channel Impulse Response Estimation

, 2010
New techniques in cross-layer wireless networks are building demand for ubiquitous channel sounding, that is, the capability to measure channel impulse response (CIR) with any standard wireless network and node.
Firooz, Mohammad H., Kasera, Sneha K., Maas, Dustin, Patwari, Neal, Zhang, Junxing   +4 more
core   +1 more source

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

Performance of Direct Sequence Spread Spectrum System (DSSSS) in Presence of Single and Multi Tone Jamming [PDF]

Engineering and Technology Journal, 2013
There are various impairments or problems on direct sequence spread spectrum communication channel especially jamming problems, in order to focus on this problem a direct sequence spread spectrum(DSSS) communication system using Gold code was used as ...
Sadiq Kamel Gharkan, Ali Abdul-Elah Noori, Saleem Latteef Mohammed   +2 more
doaj   +1 more source

Improved blind-spreading sequence estimation algorithm for direct sequence spread spectrum signals

IET Signal Processing, 2008
Direct sequence spread spectrum (DSSS) signals are now widely used for communications. DSSS transmitters use a spreading sequence to modulate the baseband signal before transmission. A receiver which does not know the spreading sequence cannot demodulate the signal.
P.-Y. Qui, Z.-T. Huang, W.-L. Jiang, C. Zhang   +3 more
openaire   +1 more source

Potential therapeutic targeting of BKCa channels in glioblastoma treatment

Molecular Oncology, EarlyView.
This review summarizes current insights into the role of BKCa and mitoBKCa channels in glioblastoma biology, their potential classification as oncochannels, and the emerging pharmacological strategies targeting these channels, emphasizing the translational challenges in developing BKCa‐directed therapies for glioblastoma treatment.
Kamila Maliszewska‐Olejniczak, Karolina Pytlak, Sandra Jaworowska, Bogusz Kulawiak, Piotr Bednarczyk   +4 more
wiley   +1 more source

A chaotic spread spectrum system for underwater acoustic communication [PDF]

, 2017
The work is supported in part by NSFC (Grant no.
Bai, Chao, Baptista, Murilo S., Grebogi, Celso, Kong, Qingju, Ren, Hai-Peng   +4 more
core   +1 more source

Cell surface interactome analysis identifies TSPAN4 as a negative regulator of PD‐L1 in melanoma

Molecular Oncology, EarlyView.
Using cell surface proximity biotinylation, we identified tetraspanin TSPAN4 within the PD‐L1 interactome of melanoma cells. TSPAN4 negatively regulates PD‐L1 expression and lateral mobility by limiting its interaction with CMTM6 and promoting PD‐L1 degradation.
Guus A. Franken, Andrea Abel Gutierrez, Imke van Rossum, Cornelia G. Spruijt, Michiel Vermeulen, Guido van Mierlo, Blanca Scheijen, Annemiek B. van Spriel   +7 more
wiley   +1 more source

Detection of Signals with Chaotic Varying Forms and Low Intercept Probability

Доклады Белорусского государственного университета информатики и радиоэлектроники
Low probability of intercept performance of direct-sequence spread-spectrum system with chaotic spreading sequences is investigated. The energy detectors, synchronous and asynchronous, coherent and non-coherent structures are studied here to detect the ...
V. Р. Tuzlukov
doaj   +1 more source