Results 51 to 60 of about 220,714 (262)

Design and evaluation of multi-core raspberry-like platinum nanoparticles for enhanced photothermal treatment

open access: yesCommunications Materials, 2023
While gold-based nanoparticles are now commonly used in nanomedicine due to their stability and high plasmonic resonance, platinum nanoparticles are recently emerging as promising candidates for enhancing radiotherapy sensitivity due to their high atomic
Erwann Guénin   +6 more
doaj   +1 more source

The Nuclear and Circum-nuclear Stellar Population in Seyfert 2 Galaxies: Implications for the Starburst-AGN Connection [PDF]

open access: yes, 2000
We report the results of a spectroscopic investigation of a sample of 20 of the brightest type 2 Seyfert nuclei. Our goal is to search for the direct spectroscopic signature of massive stars, and thereby probe the role of circumnuclear starbursts in the ...
Athanassoula R.   +12 more
core   +3 more sources

Interaction between Molten Al‐Killed Mn–B Steel and Carbon‐Bonded MgO Refractories Based on Recyclates

open access: yesAdvanced Engineering Materials, EarlyView.
High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé   +5 more
wiley   +1 more source

Episodic absorption in the outflow of V603 Aquilae [PDF]

open access: yes, 2000
We report on the time-dependent behaviour of ultraviolet spectral lines in Hubble Space Telescope Goddard High-Resolution Spectrograph data of the classical nova V603 Aql.
Knigge, C   +3 more
core  

Screen‐Printed Flexible Piezoelectric Force Sensor Array with Electromagnetic Interference Shielding

open access: yesAdvanced Engineering Materials, EarlyView.
This article introduces a flexible screen‐printed piezoelectric sensor array designed for low‐frequency healthcare applications such as tactile sensing and cardiovascular monitoring. The device integrates interface electronics enabling the simultaneous acquisition of up to 128 signals, along with flexible EMI shielding that significantly reduces noise ...
Joseph Faudou   +6 more
wiley   +1 more source

Theoretical study of XUV pulse shaping due to the modulation of an IR pulse in macroscopic systems

open access: yesNew Journal of Physics
Propagation effects are widely recognized as the origin of complex features observed in macroscopic absorption spectra. Here, we examine the evolution of spectral reshaping driven by laser-imposed initial phase modulation during pulse propagation.
Haohan Shi   +5 more
doaj   +1 more source

Developmental stage is an important factor that determines the antioxidant responses of young and old grapevine leaves under UV irradiation in a green-house. [PDF]

open access: yes, 2011
The impact of UV irradiation was studied on photosynthesis, photosystem II photochemical yields and antioxidant responses using green-house grown grapevine (Vitis vinifera L. cv. Chardonnay) leaves.
Hideg, Éva, Majer, Petra
core   +1 more source

Influence of an Argon/Silane Atmosphere on the Temperature of a Thermal Plasma

open access: yesAdvanced Engineering Materials, EarlyView.
The influence of a silane‐doped argon atmosphere on the chemical composition and temperature of a thermal nontransferring argon plasma is investigated using optical emission spectroscopy. As a result of the high amount of free electrons resulting from the stepwise ionization and dissociation of the silane molecule, even a silane addition of 0.01 vol ...
Lena Kreie   +4 more
wiley   +1 more source

Group velocity control in the ultraviolet domain via interacting dark-state resonances

open access: yes, 2007
The propagation of a weak probe field in a laser-driven four-level atomic system is investigated. We choose mercury as our model system, where the probe transition is in the ultraviolet region. A high-resolution peak appears in the optical spectra due to
Bolda E L   +14 more
core   +1 more source

GHRS and ORFEUS-II Observations of the Highly Ionized Interstellar Medium Toward ESO141-055 [PDF]

open access: yes, 1999
We present Goddard High Resolution Spectrograph and ORFEUS-II measurements of Si IV, CIV, N V, and O VI absorption in the interstellar medium of the Galactic disk and halo toward the nucleus of the Seyfert galaxy ESO141-055.
Berkhuijsen E.   +10 more
core   +2 more sources

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