Results 51 to 60 of about 429,402 (391)

Bacteria in amber coal and clay in relation to lithopanspermia [PDF]

open access: yes, 2009
A Study was undertaken to determine if amber, coal and clay samples contain bacteria. ill relation to the possibility that rocks ejected from Earth might contain microorganisms capable of colonizing other planets.
Amar Laswd   +12 more
core   +1 more source

Tracing the young massive high-eccentricity binary system Theta 1 Orionis C through periastron passage [PDF]

open access: yes, 2009
The nearby high-mass star binary system Theta 1 Orionis C is the brightest and most massive of the Trapezium OB stars at the core of the Orion Nebula Cluster, and it represents a perfect laboratory to determine the fundamental parameters of young hot ...
Baize   +61 more
core   +2 more sources

Universal scaling relations for the rational design of molecular water oxidation catalysts with near-zero overpotential

open access: yesNature Communications, 2019
While water electrolysis affords hydrogen as a carbon-neutral fuel, the oxygen evolution half-reaction limits overall performances. Here, authors examine molecular catalysts and their water oxidation mechanisms via computational methods.
Michael John Craig   +6 more
doaj   +1 more source

Characteristics of Photoluminescence and Raman Spectra, and the Occurrence of Trace Elements of Blue Amber from Dominican Republic and Mexico

open access: yesYankuang ceshi, 2022
BACKGROUND Blue amber is mainly produced in the Dominican Republic, Mexico and Myanmar. Generally speaking, the formation mechanism, composition and spectral characteristics of blue amber are closely related to its specific geographical environment ...
LIU Jinhua   +6 more
doaj   +1 more source

The zero-moment half metal: How could it change spin electronics?

open access: yesAIP Advances, 2016
The Heusler compound Mn2RuxGa (MRG) may well be the first compensated half metal. Here, the structural, magnetic and transport properties of thin films of MRG are discussed. There is evidence of half-metallicity up to x = 0.7, and compensation of the two
Davide Betto   +9 more
doaj   +1 more source

Understanding the effect of MXene in a TMO/MXene hybrid catalyst for the oxygen evolution reaction

open access: yesnpj 2D Materials and Applications, 2023
Very recently, it has been reported that mixed transition metal oxide (TMO)/MXene catalysts show improved performance over TMO only catalysts for the oxygen evolution reaction (OER). However, the reasoning behind this observation is unknown. In this work
Daire Tyndall   +11 more
doaj   +1 more source

The culture of amber in Scotland [PDF]

open access: yes, 2013
The last place most people will associate with amber is Scotland. Yet, it is the place where some of the oldest inclusions (from the Carboniferous) in tree resin have been found. Amber is defined differently by different cultures.
Clark, N.
core  

Complete checklist of Burmese (Myanmar) amber taxa 2023

open access: yesMesozoic
This is a list of all known taxa described or recorded from Burmese (Myanmar) amber from the published literature up to the end of 2023. Data from previously published checklists have been merged, the higher taxonomy has been updated and the total ...
Andrew J. Ross
semanticscholar   +1 more source

The anabolic steroid stanozolol is a potent inhibitor of human MutT homolog 1

open access: yesFEBS Letters, EarlyView.
MutT homolog 1 (MTH1) is a member of the NUDIX superfamily of enzymes and is an anticancer drug target. We show that stanozolol (Stz), an anabolic steroid, is an unexpected nanomolar inhibitor of MTH1. The X‐ray crystal structure of the human MTH1–Stz complex reveals a unique binding scaffold that could be utilized for future inhibitor development ...
Emma Scaletti Hutchinson   +7 more
wiley   +1 more source

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