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Particle Astrophysics from the Particle Perspective [PDF]

open access: yesAIP Conference Proceedings, 1993
In this talk I discuss several topics at the interface of particle physics and astrophysics/cosmology. These include the problem of dark matter and two popular dark matter candidates: axions and neutralinos.
Dine, Michael
core   +3 more sources

Wear Mechanisms Arising Additives Based Ceramic Particles to Automotive Lubricants

open access: yesTribology Online, 2023
Estimated that one third of the world’s energy will be consumed by friction, as most machine elements and vehicles have failed due to excessive wear.
Marcos Batista Garcia   +2 more
doaj   +1 more source

Particle Filtering With Invertible Particle Flow [PDF]

open access: yesIEEE Transactions on Signal Processing, 2017
A key challenge when designing particle filters in high-dimensional state spaces is the construction of a proposal distribution that is close to the posterior distribution. Recent advances in particle flow filters provide a promising avenue to avoid weight degeneracy; particles drawn from the prior distribution are migrated in the state-space to the ...
Yunpeng Li 0001, Mark Coates
openaire   +2 more sources

Sistema de riego por goteo automatizado y sostenible en zonas rurales de Nicaragua

open access: yesTecnología en Marcha, 2021
A pesar de ser un país rico en agua, Nicaragua lucha por asegurar el acceso al agua potable para muchos de sus residentes. Además de los problemas de calidad distributivo y del agua, una prolongada sequía que afecta a todas las regiones del país ha sido ...
Julio Francisco Bello Pavón   +2 more
doaj   +1 more source

Movement of a material particle on an inclined plane all the points of which describe circles in oscillatory motion in the same plane

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2020
Differential equations of material particle movement on an inclined rough plane, which performs oscillatory motion in such a way that its every point describes a circle in the same plane, have been deduced. Peculiarities of relative particle movement on
S.F. Pylypaka   +4 more
doaj   +1 more source

Flow Field and Particle Flow of Two-Stage Deep-Sea Lifting Pump Based on DEM-CFD

open access: yesFrontiers in Energy Research, 2022
Through discrete element method-computational fluid dynamics, the internal flow field and particle motion law of a two-stage deep-sea lifting pump at different rotational speeds were analyzed in this work.
Li Yuanwen   +5 more
doaj   +1 more source

Development and Production of Artificial Test Swarf to Examine Wear Behavior of Running Engine Components—Geometrically Derived Designs

open access: yesJournal of Manufacturing and Materials Processing, 2022
Subtractive manufacturing processes are usually accompanied by the occurrence of tiny flakes and swarf, which later on cause severe wear and damage, especially in moving components such as rolling or sliding bearings, pistons, etc. However, up until now,
Patrick Brag   +5 more
doaj   +1 more source

One-particle and few-particle billiards [PDF]

open access: yesChaos: An Interdisciplinary Journal of Nonlinear Science, 2006
We study the dynamics of one-particle and few-particle billiard systems in containers of various shapes. In few-particle systems, the particles collide elastically both against the boundary and against each other. In the one-particle case, we investigate the formation and destruction of resonance islands in (generalized) mushroom billiards, which are a
Lansel, Steven   +2 more
openaire   +5 more sources

Analysis of Particulate and Microbiological Filtration Performance of Air Handling Unit Filters in a Low-Energy Office Building over 12 Months

open access: yesBuildings, 2022
Indoor air quality is an important consideration for the health and well-being of building occupants, and the SARS CoV-2 pandemic highlighted the importance of maintaining proper ventilation in buildings.
Gaëtan Pavard   +3 more
doaj   +1 more source

Mechanism and research progress of the bubble-particle attachment in flotation

open access: yes工程科学学报, 2018
The interaction process between particles and bubbles can be classified as collision, attachment, and detachment; all three sub-processes determine the collection probability between particles and bubbles.
WANG Chao, SUN Chun-bao, KOU Jue
doaj   +1 more source

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