Results 31 to 40 of about 34,142 (263)

Impact of Power Loss in the Substrate on the Efficiency of RF GaN-on-Si HEMTs

open access: yesIEEE Journal of the Electron Devices Society
In RF GaN-on-Si technology, the semiconducting Si substrate can couple to the overlying circuitry and cause substrate loss, which is known to degrade the performance of passive structures. An impact on active devices also exists.
Pieter Cardinael   +5 more
doaj   +1 more source

Design Methodology for Determining and Resisting Hydraulic Shear in GCCM Lined Drainage Channels [PDF]

open access: yesE3S Web of Conferences
Flowing water in an unlined drainage channel exerts a shear force that acts on the invert and side slopes. If this tractive force is greater than the frictional resistance of the channel substrate, erosion will occur.
Plumridge Charles, Church Lee
doaj   +1 more source

Hermeticity Analysis on SiC Cavity Structure for All-SiC Piezoresistive Pressure Sensor

open access: yesSensors, 2021
The hermeticity performance of the cavity structure has an impact on the long-term stability of absolute pressure sensors for high temperature applications.
Baohua Tian   +5 more
doaj   +1 more source

Emerging experimental and computational methods for studying redox‐regulated structural transitions

open access: yesFEBS Letters, EarlyView.
Redox reactions can reshape proteins and alter how they behave in cells, with important consequences for health and disease. This review explores emerging experimental and computational approaches for discovering these redox‐sensitive protein switches, revealing their structural effects, and predicting their behavior, opening new opportunities to ...
Tasneem Rass   +2 more
wiley   +1 more source

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

open access: yesFEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

Environmental Specification of Pluripotent Stem Cell Derived Endothelial Cells Toward Arterial and Venous Subtypes

open access: yesFrontiers in Bioengineering and Biotechnology, 2019
Endothelial cells (ECs) are required for a multitude of cardiovascular clinical applications, such as revascularization of ischemic tissues or endothelialization of tissue engineered grafts.
Seep Arora   +6 more
doaj   +1 more source

Embryonic stem cells become mechanoresponsive upon exit from ground state of pluripotency [PDF]

open access: yesOpen Biology, 2019
Stem cell fate decisions are driven by a broad array of signals, both chemical and mechanical. Although much progress has been made in our understanding of the impact of chemical signals on cell fate choice, much less is known about the role and ...
C. M. Verstreken   +3 more
doaj   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

open access: yesFEBS 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

L‐aspartate oxidase provides new insights into fumarate reduction in anaerobic darkness in Synechocystis sp. PCC6803

open access: yesFEBS 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

Impact of severe cracked germanium (111) substrate on aluminum indium gallium phosphate light-emitting-diode’s electro-optical performance

open access: yesOpen Physics, 2016
Cracked die is a serious failure mode in the Light Emitting Diode (LED) industry – affecting LED quality and long-term reliability performance. In this paper an investigation has been carried out to find the correlation between severe cracked germanium ...
Annaniah Luruthudass   +1 more
doaj   +1 more source

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