Results 21 to 30 of about 224,445 (242)

Black Hole Atom as a Dark Matter Particle Candidate

open access: yesAdvances in High Energy Physics, 2014
We propose the new dark matter particle candidate—the “black hole atom,” which is an atom with the charged black hole as an atomic nucleus and electrons in the bound internal quantum states.
V. I. Dokuchaev, Yu. N. Eroshenko
doaj   +1 more source

OPTIMASI DURASI DAN RASIO BAHAN PER PELARUT EKSTRAK DAUN PEPAYA UNTUK UJI AKTIVITAS ANTIBAKTERI

open access: yesJurnal Teknologi Pertanian, 2018
Tujuan penelitian ini adalah mengetahui kombinasi waktu sonikasi dan bahan per pelarut (b/v) ekstrak daun pepaya segar, yang menghasilkan respon total fenol, aktivitas antioksidan (IC50), dan rendemen yang optimum; juga untuk mengetahui efek dari dosis ...
Anniversary Sabathani   +2 more
doaj   +1 more source

On a Search for Hidden Photon CDM by a Multicathode Counter

open access: yesAdvances in High Energy Physics, 2016
We report a new technique of a multicathode counter (MCC) developed to search for hidden photon (HP) cold dark matter (CDM) with a mass from 5 to 500 eV.
A. V. Kopylov   +2 more
doaj   +1 more source

Event Information - Archived Websites - NSFNET 20th Anniversary Event Website

open access: yes, 2013
To view this archived website, (1) extract content from the ZIP file and (2) use a web browser to open the index.html file.Archived version of the NSFNET 20th Anniversary event website.
NSFNET 20th Anniversary Committee
core   +6 more sources

Professor Oleg V. Beydik: marking the 55th birth anniversary (05.06.1964 – 27.07.2010) [PDF]

open access: yesГений oртопедии, 2019
The article is devoted to the memory of Professor Oleg V. Beydik. His career and professional development described.
Kristina K. Levchenko   +2 more
doaj   +1 more source

Ionic Precursors Transformed Into Vinyl Acetate Synthesis Catalyst via Reaction‐Driven Restructuring

open access: yesAdvanced Functional Materials, EarlyView.
This work demonstrates that a simple physical mixture of Pd and Au ionic precursors, KOAc promoter, and SiO2 support can transform into a highly active vinyl acetate synthesis catalyst through reaction‐driven restructuring. The results highlight reaction‐induced restructuring as an innovative and sustainable catalyst design strategy.
Byeong Jun Cha   +11 more
wiley   +1 more source

From the Discovery of the Giant Magnetocaloric Effect to the Development of High‐Power‐Density Systems

open access: yesAdvanced Materials Technologies, EarlyView.
The article overviews past and current efforts on caloric materials and systems, highlighting the contributions of Ames National Laboratory to the field. Solid‐state caloric heat pumping is an innovative method that can be implemented in a wide range of cooling and heating applications.
Agata Czernuszewicz   +5 more
wiley   +1 more source

Gravitational waves from phase transition in split NMSSM

open access: yesPhysics Letters B, 2018
We discuss gravitational wave signal from the strongly first order electroweak phase transition in the split NMSSM. We find that for sets of parameters predicting successful electroweak baryogenesis the gravitational wave signal can be within the reach ...
S.V. Demidov   +2 more
doaj   +1 more source

Solid Harmonic Wavelet Bispectrum for Image Analysis

open access: yesAdvanced Science, EarlyView.
The Solid Harmonic Wavelet Bispectrum (SHWB), a rotation‐ and translation‐invariant descriptor that captures higher‐order (phase) correlations in signals, is introduced. Combining wavelet scattering, bispectral analysis, and group theory, SHWB achieves interpretable, data‐efficient representations and demonstrates competitive performance across texture,
Alex Brown   +3 more
wiley   +1 more source

Conformally Invariant Gravity and Gravitating Mirages

open access: yesUniverse
The action of an ideal fluid in Euler variables with a variable number of particles is used for the phenomenological description of the processes of particle creation in strong external fields.
Victor Berezin, Inna Ivanova
doaj   +1 more source

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