Results 21 to 30 of about 123,574 (223)

Tracer Applications of Noble Gas Radionuclides in the Geosciences

open access: yes, 2013
The noble gas radionuclides, including 81Kr (half-life = 229,000 yr), 85Kr (11 yr), and 39Ar (269 yr), possess nearly ideal chemical and physical properties for studies of earth and environmental processes.
Fischer, T. P.   +10 more
core   +3 more sources

A spectroscopic study of the cycling transition 4s[3/2]_2-4p[5/2]_3 at 811.8 nm in Ar-39: Hyperfine structure and isotope shift [PDF]

open access: yes, 2010
Doppler-free saturated absorption spectroscopy is performed on an enriched radioactive Ar-39 sample. The spectrum of the 3s^2 3p^5 4s [3/2]_2 - 3s^2 3p^5 4p [5/2]_3 cycling transition at 811.8 nm is recorded, and its isotope shift between Ar-39 and Ar-40
Lu, Z. -T.   +5 more
core   +3 more sources

[PROVISIONAL] Mitochondrial genomes of genus Atta (Formicidae: Myrmicinae) reveal high gene organization and giant intergenic spacers

open access: yesGenetics and Molecular Biology
The ants of the genus Atta are considered an important pest to agriculture in Latin América, although, Atta species are important contributors to ecosystem functions in the various habitats in which they occur. Next-generation sequencing product millions
Josefa T. V. Barbosa   +4 more
doaj   +1 more source

Chimeric vaccine designs against Acinetobacter baumannii using pan genome and reverse vaccinology approaches

open access: yesScientific Reports, 2021
Acinetobacter baumannii (A. baumannii), an opportunistic, gram-negative pathogen, has evoked the interest of the medical community throughout the world because of its ability to cause nosocomial infections, majorly infecting those in intensive care units.
Fatima Shahid   +6 more
doaj   +1 more source

Mutual learning in a tree parity machine and its application to cryptography

open access: yes, 2002
Mutual learning of a pair of tree parity machines with continuous and discrete weight vectors is studied analytically. The analysis is based on a mapping procedure that maps the mutual learning in tree parity machines onto mutual learning in noisy ...
A. Engel   +20 more
core   +1 more source

Expansion of the geographic range of Cyatta abscondita Sosa-Calvo et al., 2013 (Hymenoptera: Formicidae) [PDF]

open access: yes, 2016
The presence of the recently described fungus-farming ant genus and species Cyatta abscondita is reported in the northwestern region of Misiones Province in Argentina. A single worker of C.
Filloy, Julieta   +4 more
core   +2 more sources

Empowering Carbon Fibers With Ti3C2Tx MXene: A Paradigm Shift Toward Integrated Structure‐Function Composites

open access: yesAdvanced Science, EarlyView.
This review comprehensively outlines how Ti3C2Tx MXene transforms carbon fiber from a structural component into a multifunctional platform. We systematically detail cutting‐edge modification strategies and showcase exceptional performance in EMI shielding, energy storage, smart sensing, and beyond.
Hongshuo Cao   +6 more
wiley   +1 more source

Fungos Filamentosos Associados às Espécies Atta sexdens (Linnaeus) e Atta laevigata (F. Smith) (Hymenoptera: Formicidae)

open access: yesEntomoBrasilis, 2016
Resumo. As formigas-cortadeiras, Atta e Acromyrmex, são consideradas as principais pragas no sistema agroflorestal da Região Neotropical. Isso porque cortam material vegetal que servirá de alimento ao fungo simbionte que elas cultivam.
Aline Silvestre Pereira Dornelas   +4 more
doaj   +1 more source

Non-Repudiation in Internet Telephony

open access: yes, 2007
We present a concept to achieve non-repudiation for natural language conversations over the Internet. The method rests on chained electronic signatures applied to pieces of packet-based, digital, voice communication.
Hett, Christian   +2 more
core   +1 more source

Aloe vera in Food Preservation: Harnessing Bioactive Constituents for Clean‐Label Innovation and Safety Assurance

open access: yesFood Safety and Health, EarlyView.
Aloe vera‐derived biopolymers and nanoformulations enhance antimicrobial, antioxidant, and barrier functions in clean‐label edible coatings and films, whereas safety‐critical anthraquinone thresholds and regulatory constraints shape their translational potential.
Acharya Balkrishna   +6 more
wiley   +1 more source

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