Results 71 to 80 of about 984,044 (258)
FEBS Letters, EarlyView.Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav +2 more
wiley +1 more source
Non‐orthogonal multiple access without channel state information for similar channel conditions
Electronics Letters, 2019 A downlink non‐orthogonal multiple access with QPSK input constellations based on virtual channel optimisation is presented to address the similar channel conditions scenario.
Wenlong Xia +3 more
doaj +1 more source
The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation
FEBS Letters, EarlyView.Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge +6 more
wiley +1 more source
Channel access mechanism based on equally allocation of protocol sequence for VANET
Tongxin xuebao, 2016 In order to improve the throughput performance in VANET, a channel access mechanism based on equally al-location (EA) of protocol sequence was proposed.
Zhe-xin XU +3 more
doaj
Towards LoRaWAN without Data Loss: Studying the Performance of Different Channel Access Approaches. [PDF]
Sensors (Basel), 2022 Loh F, Mehling N, Hoßfeld T.
europepmc +1 more source
FEBS Letters, EarlyView.Synechocystis strains deficient in succinate dehydrogenase (SDH) secrete more succinate than the WT under dark anaerobic conditions, supporting that SDH then primarily acts as SDH, not as a fumarate reductase. L‐aspartate oxidase (Laspo) from Synechocystis is functional under anaerobic conditions, reducing fumarate to succinate.
Kateryna Kukil +3 more
wiley +1 more source
Dynamic sharing of a multiple access channel
CoRR, 2010 In this paper we consider the mutual exclusion problem on a multiple access channel. Mutual exclusion is one of the fundamental problems in distributed computing. In the classic version of this problem, n processes perform a concurrent program which occasionally triggers some of them to use shared resources, such as memory, communication channel ...
Bienkowski, Marcin +3 more
openaire +5 more sources
Approach towards the achievable sum rates capacity of Gaussian MIMO broadcast channels
Tongxin xuebao, 2006 Since it is very difficult to compute the sum rates capacity of Gaussian MIMO broadcast channels directly by using dirty paper coding approach,an iterative water-filling algorithm is proposed to obtain the sum capacity bound for multi-access channel and ...
PAN Cheng-kang1 +3 more
doaj +2 more sources
Dynamic-Persistent CSMA: A Reinforcement Learning Approach for Multi-User Channel Access
IEEE AccessThis paper addresses the challenge of multiple users concurrently sharing a single channel in a wireless network, a problem typically managed by Carrier Sense Multiple Access (CSMA) protocols.
Chanho Lee, Seungkeun Park, Taesu Cheong
doaj +1 more source
Multi-Agent Reinforcement Learning for Joint Cooperative Spectrum Sensing and Channel Access in Cognitive UAV Networks. [PDF]
Sensors (Basel), 2022 Jiang W, Yu W, Wang W, Huang T.
europepmc +1 more source