Results 141 to 150 of about 3,012,109 (369)

Identification of secondary microbial methane and biodegradation: Case study from Luliang oil and gas field, Junggar Basin, China

open access: yesJournal of Natural Gas Geoscience, 2019
The “secondary microbial gas” is defined as natural gas generated via the biodegradation of oil reservoirs. Since methane dominates, it is also called “secondary microbial methane”.
Deyu Gong   +5 more
doaj   +1 more source

Biphasic Ni‐MXene Quantum‐Confined Nanostructures: A Versatile Janus Platform for Advanced Energy Storage and Catalytic Oxidations

open access: yesAdvanced Materials, EarlyView.
A biphasic Ni‐MXene quantum‐confined nanostructure (Ni‐MJQD) serves as a Janus platform, simultaneously achieving high‐performance energy storage and efficient catalytic oxidation. The unique architecture enables superior energy storage performance and selective benzyl alcohol oxidation‐symbolizing “one stone, two birds” for sustainable energy and ...
Lagnamayee Mohapatra   +5 more
wiley   +1 more source

Applications of stable carbon isotopes in soil science with special attention to natural 13C abundance approach

open access: yesHungarian Geographical Bulletin, 2019
Since the invention of the isotope ratio mass spectrometer, isotope analysis has shed light on many key processes in the Earth’s ecosystems. Stable isotope analysis was first applied in the field of chemistry and geochemistry, while the use of isotopic ...
Dóra Zacháry
doaj   +1 more source

From Carbon Nitrides to COFs: Opportunities and Prospects in Photocatalytic CO2 Reduction

open access: yesAdvanced Materials, EarlyView.
To underscore the potential of polymeric photocatalysts for CO2 photoreduction—from carbon nitrides to covalent organic frameworks—the table of contents graphic presents recent breakthroughs in the design of light‐responsive organic photocatalysts.
Wei Che   +10 more
wiley   +1 more source

Challenging cosmic ray propagation with antiprotons. Evidence for a "fresh" nuclei component?

open access: yes, 2002
Recent measurements of the cosmic ray (CR) antiproton flux have been shown to challenge existing CR propagation models. It was shown that the reacceleration models designed to match secondary to primary nuclei ratios (e.g., boron/carbon) produce too few ...
Mashnik, S. G.   +3 more
core   +1 more source

Planktonic foraminifera organic carbon isotopes as archives of upper ocean carbon cycling. [PDF]

open access: yesNat Commun, 2022
Hoogakker BAA   +11 more
europepmc   +1 more source

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