Results 51 to 60 of about 3,987,463 (167)

Laser‐Synthesized Amorphous PdSe2‐x Nanoparticles: A Defect‐Rich Platform for High‐Efficiency SERS, Photocatalysis, and Photothermal Conversion

open access: yesAdvanced Materials Interfaces, Volume 13, Issue 8, 21 April 2026.
Using femtosecond ablation, we show that an ordered, stoichiometric crystalline PdSe2 target can be controllably converted into a stable, disordered, non‐stoichiometric, and highly functional amorphous nanomaterial, PdSe2−x${\rm PdSe}_{2-x}$. The obtained nanoparticles offer significant advantages over conventional planar plasmon‐free substrates due to
Andrei Ushkov   +18 more
wiley   +1 more source

Raw material base of Russia’s unconventional oil and gas reserves (hydrocarbons shale strata)

open access: yesFrontiers in Earth Science, 2022
One of the most controversial and discussed issues related to the development of the hydrocarbon raw material base in recent years is the issue of exploring the possibilities of involvement in industrial development accumulations associated with high ...
Oleg Prischepa   +3 more
doaj   +1 more source

High Geomagnetic Reversal Frequency During the Middle to Late Ediacaran (∼570 Ma) Constrained by Integrated Magneto‐ and Cyclostratigraphy

open access: yesJournal of Geophysical Research: Solid Earth, Volume 131, Issue 4, April 2026.
Abstract The Ediacaran–Cambrian (∼635–539 Ma) geomagnetic field is characterized by unusually high reversal rates and markedly weakened field strength. Estimates of these reversal frequencies can reveal key aspects of deep Earth dynamics and their potential influence on surface environments and early complex life.
J. W. L. Afonso   +12 more
wiley   +1 more source

The history of oil generation by organic matter of Bazhenov Formation in the northern part of Nyurol megadepression (Western Siberia) [PDF]

open access: yesНефтегазовая геология: Теория и практика, 2023
The results of one-dimensional modeling of oil and gas generation by organic matter of the non-oil and oil-bearing Bazhenov Formation in a well network within the northern part of Nyurol megadepression are presented.
Ryzhkova S.V., Deshin A.A.
doaj  

Phase Topology Stability of an Optical Vortex via an Electrically Controlled Twist‐Planar Oriented Liquid Crystal Fresnel Lens

open access: yesAdvanced Optical Materials, Volume 14, Issue 5, 2 February 2026.
A simple and efficient method for determining the stability of optical vortices via Fourier transform using a conventional spherical lens is presented. The theoretical and experimental results demonstrate a practical approach to directly and unambiguously measure the magnitude and sign of the topological charge of a beam without altering an ...
Elena Melnikova   +5 more
wiley   +1 more source

A >70‐Myr‐Long Geomagnetic Field Reversal Hyperactivity Across the Ediacaran‐Cambrian Transition

open access: yesGeophysical Research Letters, Volume 52, Issue 23, 16 December 2025.
Abstract The long‐term variation of the geomagnetic field is a key constraint for unraveling the geodynamo processes and the evolution of Earth's deep interior. However, the geomagnetic reversal pattern during the Ediacaran–Cambrian transition remains elusive. Here we present an integrated magneto‐ and cyclo‐stratigraphic study of a ∼1.8‐Myr‐long, late
Fuyun Shen   +6 more
wiley   +1 more source

Laboratory studies of the behavior of organic matter of the Bazhenov deposits during thermal effects [PDF]

open access: yes, 2019
Currently, the role of unconventional facilities for hydrocarbons is increasing. Such objects include the Domanik rocks (Republic of Tatarstan) and Bazhenov deposits (Western Siberia).
Bondarev Evgeniy Vyacheslavovich   +7 more
core   +1 more source

Hard-to-recover reserves of Yugra oil (West Siberia)

open access: yesГеофизический журнал, 2019
In 2017, the Yugra’s share of the all-Russian production was 43.0 %, it’s 235.3 million tons in absolute units. This is 3.9 million tons less than in 2016 and 43.1 million less than in 2007.
V. I. Isaev   +5 more
doaj   +1 more source

WONOEP XVII appraisal: Targeting network excitability beyond the synapse ‐Neurotransmitter, ionic, and electro ‐diffusions

open access: yesEpilepsia, Volume 66, Issue 11, Page 4139-4161, November 2025.
Abstract Epilepsy affects approximately 1% of the population worldwide, and although medications are effective in the majority of cases, seizures persist in approximately 30% of patients. Despite the effort to develop new antiseizure drugs, the rate of pharmacoresistance in patients has not diminished over the past 3 decades. There is thus a real unmet
Vincent Magloire   +9 more
wiley   +1 more source

Degree Spectra, and Relative Acceptability of Notations [PDF]

open access: yes, 2023
We investigate the interplay between the degree spectrum of a computable relation R on the computable structure (ω,
Kalociński, Dariusz, Bazhenov, Nikolay
core   +1 more source

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