Results 21 to 30 of about 594,915 (259)

Design of ion beam source for a sample tokamak neutral beam injection heating system [PDF]

open access: yesمجله علوم و فنون هسته‌ای, 2020
In this paper, the design and simulation of ion source based on a helicon plasma generator and its corresponding extraction system for design of the neutral beam injection heating system of a sample tokamak like Damavand tokamak using COMSOL software ...
S. Fazelpour, A. Chakhmachi, H. Sadeghi
doaj   +1 more source

Upgrading the ECR ion source within FAMA [PDF]

open access: yesNuclear Technology and Radiation Protection, 2018
Recent upgrading of the Facility for Modification and Analysis of Materials with Ion Beams - FAMA, in the Laboratory of Physics of the Vinča Institute of Nuclear Sciences, included the modernization of its electron cyclotron resonance ion source.
Efremov Andrey A.   +6 more
doaj   +1 more source

Design and Performance Test of ENT2465 Long-Life Neutron Tube

open access: yesHe huaxue yu fangshe huaxue
The neutron tube is the core component of the controllable neutron source logging instrument. Its working stability, temperature resistance, neutron yield and other indicators have an important impact on the working performance of instrument. At present,
LIU Ze-wei   +9 more
doaj   +1 more source

Sources of Radioaciive Ions

open access: yesIEEE Transactions on Nuclear Science, 1985
Beams of unstable nuclei can be formed by direct injection of the radioactive atoms into an ion source, or by using the momentum of the primary production beam as the basis for the secondary beam. The effectiveness of this latter mechanism in secondary beam formation, i.e.
openaire   +2 more sources

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

open access: yesFEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace   +6 more
wiley   +1 more source

Generation of small-diameter ion beam for high-precision optical fabrication (Structural optimization of quadrupole magnetic lens using permanent magnets by numerical simulation)

open access: yesNihon Kikai Gakkai ronbunshu, 2020
Ion beam etching is effectively used for the fabrication of high-precision optics. The main application of ion beam etching is to figure large optical surfaces to correct shape errors remaining on polished surfaces. To figure small or medium-size optical
Hideo TAKINO   +2 more
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

Increase of SARS-CoV-2 RNA load in faecal samples prompts for rethinking of SARS-CoV-2 biology and COVID-19 epidemiology [version 3; peer review: 2 approved]

open access: yesF1000Research, 2021
Background Scientific evidence for the involvement of human microbiota in the development of COVID-19 disease has been reported recently. SARS-CoV-2 RNA presence in human faecal samples and SARS-CoV-2 activity in faeces from COVID-19 patients have been ...
Mauro Petrillo   +5 more
doaj   +1 more source

Engineering peptides into antibodies—opportunities and strategies for therapeutic innovation

open access: yesFEBS Letters, EarlyView.
Peptides and antibodies occupy complementary therapeutic niches. Peptides recognize difficult targets in a compact format, while antibodies add specificity, long half‐life, and effector functions. This review examines strategies that merge both modalities—peptide grafting into loops, terminal and Fc fusions, and bioconjugation—highlighting how ...
Jinling Wang   +2 more
wiley   +1 more source

Determination and Source Analysis of Hydrochemical Components in Different Water Bodies during the Normal Water Period in the Nandagang Wetland of Hebei Province, China

open access: yesYankuang ceshi
In 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
doaj   +1 more source

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