Results 41 to 50 of about 2,030,078 (295)
Yankuang ceshiIn recent years, the Nandagang wetland in Hebei Province has been facing a multidimensional water environmental crisis characterized by decreasing water volume, deteriorating water quality, and declining ecological service functions.
Jing RONG +7 more
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New Ion Source Filament for Prolonged Ion Source Operation on A Medical Cyclotron
Instruments, 2019 Cyclotrons are an important tool for accelerator sciences including the production of medical isotopes for imaging and therapy. For their successful and cost-efficient operation, the planned and unplanned down time of the cyclotron needs to be kept at a ...
Dave Prevost +4 more
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Rotational and nuclear-spin level dependent photodissociation dynamics of H2S
Nature Communications, 2021 The photodissociation dynamics of small molecules in the vacuum ultraviolet range can have key implications for astrochemical modelling, but revealing such dynamical details is a challenging task.
Yarui Zhao +14 more
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Molecular bases of circadian magnesium rhythms across eukaryotes
FEBS Letters, EarlyView.Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley +1 more source
New Journal of Physics, 2017 Negative ion sources for fusion are high densities plasma sources in large discharge volumes. There are many challenges in the modeling of these sources, due to numerical constraints associated with the high plasma density, to the coupling between plasma
G Fubiani +4 more
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Effects of ion extraction on discharges in gridded ion source
AIP Advances, 2022 Effects of ion extraction on gridded ion source discharge or the coupling between ion extraction and gridded ion source discharge are investigated for the first time by correlating the ratio of the ion impingement current (Ia) to ion beam current (Ib ...
Y. R. Yang, S. H. Fu, Z. F. Ding
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Miniature cyclotron resonance ion source using small permanent magnet [PDF]
, 1980 An ion source using the cyclotron resonance principle is described. A miniaturized ion source device is used in an air gap of a small permanent magnet with a substantially uniform field in the air gap of about 0.5 inch.
Anicich, V. G., Huntress, W. T., Jr.
core +1 more source
Direct magneto-optical compression of an effusive atomic beam for high-resolution focused ion beam application [PDF]
, 2017 An atomic rubidium beam formed in a 70 mm long two-dimensional magneto-optical trap (2D MOT), directly loaded from a collimated Knudsen source, is analyzed using laser-induced fluorescence.
de Raadt, T. C. H. +6 more
core +3 more sources
Peptide‐based ligand antagonists block a Vibrio cholerae adhesin
FEBS Letters, EarlyView.The structure of a peptide‐binding domain of the Vibrio cholerae adhesin FrhA was solved by X‐ray crystallography, revealing how the inhibitory peptide AGYTD binds tightly at its Ca2+‐coordinated pocket. Structure‐guided design incorporating D‐amino acids enhanced binding affinity, providing a foundation for developing anti‐adhesion therapeutics ...
Mingyu Wang +9 more
wiley +1 more source
St. Petersburg Polytechnical University Journal: Physics and MathematicsIn this work, a charge particle beam transport in a corona discharge ion source with a thin diaphragm focusing system taking into account the gas-dynamic flow in the vicinity of the nozzle has been studied experimentally.
Pomozov Timofey +3 more
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