Results 111 to 120 of about 32,643 (235)

Composition of the L5 Mars Trojans: Neighbors, not Siblings

open access: yes, 2007
Mars is the only terrestrial planet known to have Tro jan (co-orbiting) asteroids, with a confirmed population of at least 4 objects. The origin of these objects is not known; while several have orbits that are stable on solar-system timescales, work by ...
Andrew S. Rivkin   +40 more
core   +1 more source

Effect of magnetic MMP removal on long‐term dentin collagen stability

open access: yesEuropean Journal of Oral Sciences, EarlyView.
Abstract Several matrix metalloproteinase (MMP) inhibitors have been investigated for their ability to improve dentin‐bond longevity. However, MMPs tend to reactivate over time, especially using simplified etch‐and‐rinse adhesives. This study investigated a novel magnetic removal of dentinal MMPs on bonding durability, MMP inhibition and collagen ...
Walter Zenobi   +10 more
wiley   +1 more source

Cosmic Chronometers: Constraining the Equation of State of Dark Energy. II. A Spectroscopic Catalog of Red Galaxies in Galaxy Clusters

open access: yes, 2009
We present a spectroscopic catalog of (mostly) red galaxies in 24 galaxy clusters in the redshift range 0.17 < z < 0.92 obtained with the LRIS instrument on the Keck I telescope.
Ashby   +37 more
core   +1 more source

New alternatives in photoprotection: Preparation and evaluation of lamellar silicate derivatives and their use as sunscreens

open access: yesInternational Journal of Cosmetic Science, EarlyView.
The use of nanotechnology in sunscreens has increased, with various filters and organoclays tested for new intercalated formulations. As animal toxicity tests decrease, New Approach Methodologies are favoured. The S4 + OMC‐NC improved cell survival under SSL and showed antimutagenic properties, making it a promising candidate for safe photoprotection ...
Daniel Mabundu Kibwila   +6 more
wiley   +1 more source

Porphyrin‐Linked Antifungal Nanocarrier Promotes Plant Growth via UV RESISTANCE LOCUS 8‐Mediated Light Signalling Activation

open access: yesPlant Biotechnology Journal, EarlyView.
ABSTRACT Nanocarriers can improve pesticide delivery efficiency and reduce phytotoxicity, thereby supporting sustainable strategies for crop protection. Given this potential, it is essential to investigate their effects on crop physiology and development.
Yahui Yang   +8 more
wiley   +1 more source

Spectrophotometry of comets [PDF]

open access: yes
Photoelectric spectrophotometric- and image tube equipped spectrographic-studies on comets are used to formulate a new model for the cometary nucleus that is physically similar to the icy-conglomerate.
Odell, C. R.
core   +1 more source

Index to NASA Tech Briefs, 1975 [PDF]

open access: yes, 1976
This index contains abstracts and four indexes--subject, personal author, originating Center, and Tech Brief number--for 1975 Tech ...

core   +1 more source

Mimicking Synaptic Plasticity: Optoionic MoS2 Memory Powered by Biopolymer Hydrogels as a Dynamic Cations Reservoir

open access: yesAdvanced Functional Materials, Volume 35, Issue 50, December 9, 2025.
Janus (MoS2) transistors functionalized with sodium alginate (SA) and poly(vinylidene fluoride‐co‐trifluoroethylene) [P(VDF‐TrFE)] exhibit persistent photo‐induced ionic gating, driven by dynamic cation migration at the hybrid interface. This ionic mechanism enables finely tunable photoconductivity and emulates key synaptic plasticity behaviors ...
Yeonsu Jeong   +5 more
wiley   +1 more source

A Cost‐Effective and Scalable Machine Learning Approach for Quality Assessment of Fresh Maize Kernel Using NIR Spectroscopy

open access: yesAdvanced Science, Volume 12, Issue 46, December 11, 2025.
A cost‐effective and scalable PCNN approach is developed for NIR model construction that has compatibility with multiple instruments and multiple crops. It is time and cost saving, rapid and nondestructive, small sample set based, various quality properties and extensible for breeding application in fresh maize, forage maize, rice, wheat, and barley ...
Jiang Shi   +9 more
wiley   +1 more source

Analysis of a thioether lubricant by infrared Fourier microemission spectrophotometry [PDF]

open access: yes
An infrared Fourier microemission spectrophotometer is used to obtain spectra (wavenumber range, 630 to 1230 0.1 cm) from microgram quantities of thioether lubricant samples deposited on aluminum foil.
Jones, W. R., Jr.   +2 more
core   +1 more source

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