Results 141 to 150 of about 267,753 (326)

Inactivation effect and mechanism of ultrasound combined with ultraviolet treatment on Bacillus cereus spores

open access: yesJournal of Agriculture and Food Research
Bacillus cereus is a common foodborne pathogen, and its formation of strongly resistant spores renders the pathogen difficult to eliminate completely using traditional sterilization methods.
Yajin Qi   +4 more
doaj   +1 more source

Demonstration of an All‐Optical AND Gate Mediated by Photochromic Molecules

open access: yesAdvanced Functional Materials, EarlyView.
A logic AND gate that runs on photons is demonstrated. It relies on two spatially separated photochromic molecules that work in tandem. Abstract The realization of a photonic logic AND gate, i.e. a logic AND gate that runs on photons rather than electrons, and where all steps are controlled by light, is demonstrated. In a proof‐of‐principle experiment,
Heyou Zhang   +7 more
wiley   +1 more source

Bright continuously tunable vacuum ultraviolet source for ultrafast spectroscopy

open access: yesCommunications Physics
Ultrafast electron dynamics drive phenomena such as photochemical reactions, catalysis, and light harvesting. To capture such dynamics in real-time, femtosecond to attosecond light sources are extensively used.
Lucie Jurkovičová   +16 more
doaj   +1 more source

Ultraviolet Raman spectroscopy of N2in a recombining atmospheric pressure plasma

open access: green, 2017
Sean McGuire   +2 more
openalex   +2 more sources

Laser‐Induced Graphene from Waste Almond Shells

open access: yesAdvanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova   +9 more
wiley   +1 more source

Near‐Infrared Emitting Lanthanide Catecholate Giant Single Crystals – Morphology Control and Photon Down‐Conversion

open access: yesAdvanced Functional Materials, EarlyView.
Controlled syntheses of lanthanide coordination polymers based on the dihydroxybenzoquinone (DHBQ) organic linker afforded large single crystals of Ln‐DHBQ CPs (Ln = Yb, Nd). A novel structural variant of Yb‐DHBQ is identified by means of single crystal diffraction analysis.
Marina I. Schönherr   +7 more
wiley   +1 more source

Ultraviolet spectroscopy of cool stars

open access: yesJournal of the Optical Society of America B, 1988
A review is given of some developments in the study of UV emission-line spectra of cool stars, including the Sun, in recent years. Although early work on solar-line identifications depended heavily on compilations of energy levels from laboratory studies [ Natl. Stand. Ref. Data Ser. Natl. Bur. Stand.35 ( 1971);Natl. Bur. Stand. (U.S.) Circ.488 ( 1950,
openaire   +2 more sources

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