Results 41 to 50 of about 7,029,092 (247)

Improved Thermal Transient Testing of Wide Bandgap Devices with Extremely Low Channel Resistance

Energies
Thermal transient testing (TTT) is an essential technique for characterizing electronic systems, including packaged devices, modules, and subassemblies.
Sandor Ress, Gabor Farkas, Zoltan Sarkany, Marta Rencz   +3 more
doaj   +1 more source

Calculation of the Electronic Parameters of an Al/DNA/p-Si Schottky Barrier Diode Influenced by Alpha Radiation

Sensors, 2015
Many types of materials such as inorganic semiconductors have been employed as detectors for nuclear radiation, the importance of which has increased significantly due to recent nuclear catastrophes. Despite the many advantages of this type of materials,
Hassan Maktuff Jaber Al-Ta'ii, Yusoff Mohd Amin, Vengadesh Periasamy   +2 more
doaj   +1 more source

Epigenetic reprogramming of lineage switching in cancer

FEBS Letters, EarlyView.
Cancer cells rarely commit to a single identity. Epigenetic mechanisms and tumor microenvironment cues push epithelial cells toward flexible, hybrid states that can shift into mesenchymal, neuroendocrine, or stem‐like fates, driving metastasis, drug resistance, and tumor heterogeneity. Targeting the epigenetic regulators behind these transitions, using
Ezgi Boyvatlı, Burcu Akman, Ezgi Bağırsakçı, Nese Atabey, Serap Erkek‐Ozhan   +4 more
wiley   +1 more source

Designing transparent conducting electrodes to enhance the performance of large-area perovskite solar cells

JPhys Energy
In solar cell research, transparent conducting electrodes (TCEs) are typically not included in device optimization. In this study, we investigate the properties of TCEs to identify the most important one(s) for the performance of large-area perovskite ...
Bishal Bhandari, Justin C Bonner, Matthew Timofeev, William J Scheideler, Julia W P Hsu   +4 more
doaj   +1 more source

Influence of Active Layer and Metal Contact Thickness on P3HT:PCBM Solar Cell Performance

Inorganics
Solar cell efficiency depends on both photogeneration and charge collection, with the active layer playing a key role in these processes. In organic solar cells (OSCs), where power conversion efficiency (PCE) remains relatively low, understanding the ...
Mariely Loeza-Poot, Inés Riech, Ricardo Mis-Fernández, Eduardo Flores, David Meneses-Rodríguez, Eric Hernández-Rodríguez   +5 more
doaj   +1 more source

Fluctuations of a beam with clamped ends

Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2015
In this paper we study the initial problem for the equation of a beam with clamped ends. Uniqueness, existence and stability theorems are proved for the problem in the classes of regular and generalized solutions.
Kamil B Sabitov
doaj   +1 more source

Intermediate-type vancomycin resistance (VISA) in genetically-distinct Staphylococcus aureus isolates is linked to specific, reversible metabolic alterations. [PDF]

PLoS ONE, 2014
Intermediate (VISA-type) vancomycin resistance in Staphylococcus aureus has been associated with a range of physiologic and genetic alterations. Previous work described the emergence of VISA-type resistance in two clonally-distinct series of isolates. In
Elizabeth L Alexander, Susana Gardete, Haim Y Bar, Martin T Wells, Alexander Tomasz, Kyu Y Rhee   +5 more
doaj   +1 more source

Structural and biochemical analysis of a B12 superbinder

FEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices, Jacob J. Whittaker, Dirk J. Slotboom, Albert Guskov   +3 more
wiley   +1 more source

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

FEBS 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

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, Vivian Pogenberg, Alexander Baumgart, Bente Siebels, Hartmut Schlüter, Michael Hecht‐Bucher, Aymelt Itzen   +6 more
wiley   +1 more source