Results 131 to 140 of about 2,563 (249)

Burst-by-Burst Adaptive Decision Feedback Equalised TCM, TTCM and BICM for H.263-Assisted Wireless Video Telephony

open access: yes, 2006
Decision Feedback Equaliser (DFE) aided wideband Burst-by-Burst (BbB) Adaptive Trellis Coded Modulation (TCM), Turbo Trellis Coded Modulation (TTCM) and Bit-Interleaved Coded Modulation (BICM) assisted H.263-based video transceivers are proposed and ...
Ng, S. X.   +3 more
core  

Data‐Driven Characterization of Knee Structures Using Non‐Negative Matrix Factorization of 3D Multi‐Echo UTE MRI

open access: yesNMR in Biomedicine, Volume 39, Issue 6, June 2026.
Non‐negative matrix factorization (NMF) can derive tissue features in a data‐driven manner without relying on biophysical model assumptions. First‐time application of NMF to 3D multi‐echo UTE knee MRI revealed four reproducible components associated with tissues of fast and slow transverse relaxation, water–fat mixture (chemical shift), and fat tissue.
Céline Smekens   +5 more
wiley   +1 more source

Urate‐Related Genetic Risk Modulates the Anti‐Aging Effects of Exogenous Nucleotides: Multi‐Omics Evidence From Older Adults

open access: yesAging Cell, Volume 25, Issue 6, June 2026.
In the TALENTs trial, 19‐week exogenous nucleotide supplementation produced UA‐PRS‐dependent anti‐aging responses: reduced DNA methylation age in High‐PRS individuals and preserved telomere length with improved immune–inflammatory profiles in Low‐PRS individuals, supporting precision nutrition for healthy aging.
Ruisheng Fu   +6 more
wiley   +1 more source

Turbo Codes Performance Optimization over Block Fading Channels

open access: yesJournal of Communications Software and Systems, 2006
In this paper, the best achievable performance of a turbo coded system on a block fading channel is obtained, assuming binary antipodal modulation. A rate 1/3 turbo code is considered, obtained by concatenating, through a random interleaver, an 8-states ...
Fulvio Babich   +2 more
doaj  

Reduced Complexity I/Q Turbo Detection for Space-Time Trellis-Coded Systems

open access: yes, 2004
A reduced-complexity turbo-detection scheme, referred to here as the R-TD arrangement, is proposed for employment in space-time trellis-coded (STTC) systems using the inphase/quadrature-phase (I/Q) cancellation technique that was previously developed for
Yeap, B.L., Hanzo, L.
core  

Automodification of N‐terminal serine residues facilitates PARP2 release from DNA

open access: yesThe FEBS Journal, Volume 293, Issue 11, Page 3274-3287, June 2026.
PARP2 is involved in detecting DNA damage and its N‐terminal role is largely unknown. Based on biochemical and biophysical data, our findings suggest that in the presence of HPF1, N‐terminal serine 8 and 73 are enriched in auto‐ADP‐ribosylation. Our results provide insight into the mechanistic role of PARP2 N‐terminus in the PARylation‐dependent ...
Saurabh Singh Dhakar   +6 more
wiley   +1 more source

Selective targeting of cortactin tandem repeat acetylation by human lysine deacetylases

open access: yesThe FEBS Journal, Volume 293, Issue 12, Page 3528-3544, June 2026.
Cortactin function is regulated by acetylation at several lysine residues within its tandem repeat region. Using genetic code expansion to generate cortactin variants containing precisely defined acetylation marks, we show that HDAC6 is the primary enzyme removing these modifications, with SIRT1 and SIRT2 also acting at selected sites but with lower ...
Jan Komarek   +12 more
wiley   +1 more source

Cytokinin downregulates Photosystem II photochemistry during prolonged darkness in a phytochrome B‐dependent manner

open access: yesNew Phytologist, Volume 250, Issue 6, Page 3846-3866, June 2026.
Cytokinin–phyB signaling modulates PSII photochemistry during prolonged darkness. Summary Cytokinins (CKs) delay dark‐induced senescence, but how they tune photosynthetic function in darkness remains unclear. We investigated the effects of classical aromatic CK benzylaminopurine and CK‐derived compound 1‐(2‐methoxyethyl)‐3‐(1,2,3‐thiadiazol‐5‐yl)urea ...
Veronika Kábrtová   +14 more
wiley   +1 more source

Maximum Euclidean distance network coded modulation for asymmetric decode-and-forward two-way relaying

open access: yes, 2013
Network coding (NC) compresses two traffic flows with the aid of low-complexity algebraic operations, hence holds the potential of significantly improving both the efficiency of wireless two-way relaying, where each receiver is collocated with a ...
Chen, Wei, Hanzo, Lajos, Cao, Zhigang
core   +1 more source

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