Results 121 to 130 of about 426,299 (315)

The absorption spectra of triiodides [PDF]

open access: yesProceedings of the Royal Society of London. Series A - Mathematical and Physical Sciences, 1937
Abstract The absorption spectra of the triiodides are of particular interest in view of the striking fact, to which attention was directed ten years ago by Professor Lowry, that the same twin maxima of intensity occur at about 3500 A. and 2900 A.
openaire   +1 more source

24.2 Solar E-M radiation spectra absorption

open access: yes
An illustration labeled Solar E-M radiation spectra ...

core  

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal   +2 more
wiley   +1 more source

Chromophoric signatures of microbial by‐products in the dark ocean

open access: yesGeophysical Research Letters, 2016
Detailed examination of the absorption spectra from dark ocean samples allowed us to identify and deconvolve two distinct chromophores centered at 302 nm (UV) and 415 nm (visible) from the exponential decay curve characteristic of humic substances.
Teresa S. Catalá   +6 more
doaj   +1 more source

Incorporation of Selenium into Sol–Gel‐Derived Bioactive Glass: Influence on Glass Structure, Bioactivity, and its Selective Cytotoxicity

open access: yesAdvanced Engineering Materials, EarlyView.
Selenium was incorporated into a sol–gel‐derived bioactive glass to enable sustained therapeutic ion release. The selenium‐containing glass preserved bioactivity while selectively inducing cytotoxicity in osteosarcoma cells and maintaining osteoblastic viability.
Breno Rocha Barrioni   +7 more
wiley   +1 more source

Chlorophyll α specific absorption and fluorescence excitation spectra for light-limited phytoplankton

open access: yes, 1988
Methods are described for the measurement of spectral absorption coefficients, fluorescence excitation, and fluorescence yields for pigmented particles retained on filters.
B. Greg Mitchell* and Dale A. Kiefer
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Additive Manufacturing of Continuous Fibre Reinforced Composites: Process, Characterisation, Modelling, and Sustainability

open access: yesAdvanced Engineering Materials, EarlyView.
Additive manufacturing provides precise control over the placement of continuous fibres within polymer matrices, enabling customised mechanical performance in composite components. This article explores processing strategies, mechanical testing, and modelling approaches for additive manufactured continuous fibre‐reinforced composites.
Cherian Thomas, Amir Hosein Sakhaei
wiley   +1 more source

Non-Markovian dynamics in guanidinium-based perovskites

open access: yesScientific Reports
Markovian and non-Markovian measurements play a critical role in characterizing open quantum systems and elucidating phenomena associated with radiation absorption processes.
H. Triviño   +4 more
doaj   +1 more source

Fostering Innovation: Streamlining Magnetocaloric Materials Research by Digitalization

open access: yesAdvanced Engineering Materials, EarlyView.
Magnetocaloric cooling (MCE) is an environmentally friendly refrigeration method with great potential. Optimizing MCE materials involves the preparation and screening of large quantities of samples, which in turn generates a large amount of data. A digitalization approach is presented that uses ontologies, knowledge graphs, and digital workflows to ...
Simon Bekemeier   +17 more
wiley   +1 more source

Absorption and Raman spectra of Se-8-ring clusters in zeolite 5A

open access: yes, 1996
Samples with different weight ratio of Se to zeolite 5A (Se composition) have been prepared by loading Se into the cages of zeolite 5A and the measurements of the absorption and Raman spectra have been carried out for the prepared samples.
Li G   +7 more
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