Results 11 to 20 of about 60 (53)
The key role of the NAD biosynthetic enzyme nicotinamide mononucleotide adenylyltransferase in regulating cell functions. [PDF]
IUBMB Life, 2022 Abstract The enzyme nicotinamide mononucleotide adenylyltransferase (NMNAT) catalyzes a reaction central to all known NAD biosynthetic routes. In mammals, three isoforms with distinct molecular and catalytic properties, different subcellular and tissue distribution have been characterized.
Fortunato C, Mazzola F, Raffaelli N.
europepmc +2 more sources
International Journal of Antennas and Propagation, Volume 2021, Issue 1, 2021., 2021 A band‐stop filter with three different negative group delay functions in the passband, namely, band pass, high pass and low pass, is proposed, which has small insertion loss. The capacitance, inductance, and resistance meet different conditions, and the circuit can realize three different negative group delay characteristics.
Aixia Yuan +5 more
wiley +1 more source
CSRR DGS-Based Bandpass Negative Group Delay Circuit Design
IEEE Access, 2023 The unfamiliar negative group delay (NGD) circuit is the less familiar function for most of RF and microwave design engineers. Among the existing types, the bandpass (BP) NGD type circuits are the most convenient for the wireless communication microwave ...
Qizheng Ji +10 more
doaj +1 more source
IEEE Access, 2021 This paper focuses on the time-domain analysis of bandpass (BP) negative group delay (NGD) function. The innovative NGD investigation is based on the time-domain experimentation of an innovative topology of “lill”-shape passive microstrip ...
Remy Vauche +7 more
doaj +1 more source
Bandpass NGD TAN of Symmetric H-Tree With Resistorless Lumped-Network
IEEE Access, 2021 This paper introduces an innovative passive topology of bandpass (BP) negative group delay (NGD) electrical circuit implemented with symmetric H-tree network.
Blaise Ravelo +5 more
doaj +1 more source
0IO-Shape PCB Trace Negative Group-Delay Analysis
IEEE Access, 2020 This paper elaborates a negative group delay (NGD) analysis of 0IO-shape printed circuit board (PCB) traces. This circuit topology is originally implemented with a tri-coupled line (3CL) six-port element with the lateral side connected through lossy ...
Fayu Wan +6 more
doaj +1 more source
Bandpass Negative Group Delay Theory of Fully Capacitive Δ-Network
IEEE Access, 2021 A particularly original negative group delay (NGD) theory of $\Delta $ -topology is developed in the present paper. The NGD three-port topology is a passive circuit purely constituted by capacitors network. The model of the proposed $\Delta $ -topology
Fayu Wan +8 more
doaj +1 more source
S-Parameter Model of Three Parallel Interconnect Lines Generating Negative Group-Delay Effect
IEEE Access, 2018 This paper develops a negative group-delay (NGD) microwave circuit theory regarding topology consists of three parallel interconnect lines (3-PILs). The NGD topology under study is built using completely distributed microstrip lines. The 3-PIL NGD theory
Fayu Wan +4 more
doaj +1 more source
Analytical Design of Dual-Band Negative Group Delay Circuit With Multi-Coupled Lines
IEEE Access, 2020 This paper develops an innovative design method of a multi-coupled line (CL) topology of low-loss dual band negative group delay (NGD) circuit. The proposed is conceived using three transmission lines (TLs) with different length in which integrate two ...
Xiang Zhou +7 more
doaj +1 more source
IEEE Access, 2022 This paper investigates on the theorization, design, fabrication and measurement of original phase shifter (PS) operating with two-step stair phase behavior.
Blaise Ravelo +7 more
doaj +1 more source