Results 41 to 50 of about 278,116 (259)

Ionic liquid ion sources for focused ion beam applications: A review

open access: yesMicro and Nano Engineering
Focused ion beam (FIB) technology has transformed materials science by enabling precise micro- and nano-scale modifications through ion beam interactions. Originally developed for semiconductor doping and device fabrication, FIBs use different ionization
Rachel Ord   +3 more
doaj   +1 more source

Feasibility of thin film nanocomposite membranes for clean energy using pressure retarded osmosis and reverse electrodialysis

open access: yesEnergy Nexus, 2022
Power generation from renewable energy sources is becoming increasingly significant as global energy consumption increases. The non-renewable energy sources we use now are on the verge of extinction.
Arvin Shadravan   +2 more
doaj   +1 more source

Three phosphatase families form a community: The phosphohydrolases that act upon inositol pyrophosphates

open access: yesFEBS Letters, EarlyView.
Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley   +1 more source

Diagnostics tools and methods for negative ion source plasmas, a review

open access: yesNew Journal of Physics, 2017
Plasma parameter measurements for negative hydrogen (H ^− ) ion sources have been playing an important role in clarifying fundamental physics related to negative ion production and destruction processes. Measured data of beam properties, such as H ^− ion
Katsuyoshi Tsumori, Motoi Wada
doaj   +1 more source

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler   +2 more
wiley   +1 more source

An overview of negative hydrogen ion sources for accelerators

open access: yesNew Journal of Physics, 2018
An overview of high current (>1 mA) negative hydrogen ion (H ^– ) sources that are currently used on particle accelerators. The current understanding of how H ^– ions are produced is summarised. Issues relating to caesium usage are explored.
Dan Faircloth, Scott Lawrie
doaj   +1 more source

AscF in the mycobacterial CIII–CIV supercomplex lacks metal and nucleotide binding but links malate oxidation to respiration

open access: yesFEBS Letters, EarlyView.
The mycobacterial CIII‐CIV respiratory supercomplex is an obligate assembly, encompassing several subunits of unknown functions. We have characterized the intracellular subunit AscF, and show that it is unlikely to be a sensor for metals or nucleotides, but is required for growth on nonfermentable energy sources, and likely works as an adapter for ...
Eni Rile   +8 more
wiley   +1 more source

An epithelial GPR35 isoform supports tumor‐associated transcriptional and metabolic phenotypes

open access: yesFEBS Letters, EarlyView.
GPR35 generates two functionally distinct isoforms with previously unresolved roles. GPR35‐short mediates immune‐cell chemotaxis, while GPR35‐long is enriched in colorectal cancer epithelium, where it supports increased metabolism, proliferation, and tumor‐associated transcriptional programs.
Jørgen D. Rønneberg   +14 more
wiley   +1 more source

Modern solutions of aerial ion field distributions

open access: yesUkrainian Journal of Educational Studies and Information Technology, 2017
The paper considers the simulation of distribution of dispersed aerial ions in space from artificial sources of aerial ionization using the Android Studio software environment.
Oksana Strokan, Yulia Lytvyn
doaj   +3 more sources

ION MOBILITY SPECTROMETRY: HISTORY, CHARACTERISTICS AND APPLICATIONS ESPECTROMETRÍA DE MOVILIDAD IÓNICA: HISTORIA, CARACTERÍSTICAS Y APLICACIONES

open access: yesRevista U.D.C.A Actualidad & Divulgación Científica, 2012
Ion mobility spectrometry (IMS) is an analytical technique that separates ions in the gas phase. Ions are separated at atmospheric pressure under the influence of an electric field, according to their size and shape.
Roberto Fernández-Maestre
doaj  

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