Observation of a correlated free four-neutron system
Nature, 2022 A long-standing question in nuclear physics is whether chargeless nuclear systems can exist. To our knowledge, only neutron stars represent near-pure neutron systems, where neutrons are squeezed together by the gravitational force to very high densities.
M. Duer +90 more
semanticscholar +1 more source
Vehicle state and tyre force estimation: demonstrations and guidelines
Vehicle System Dynamics, 2021 This paper presents an in-depth analysis of the application of different techniques for vehicle state and tyre force estimation using the same experimental data and vehicle models, except for the tyre models.
Marco Viehweger +10 more
semanticscholar +1 more source
Derivations of relativistic force transformation equations [PDF]
, 2011 The correct general form of relativistic transformation equations for the three-vector force is derived without using four-vectors, via the relativistic Newton's second law. The four-vector approach to the problem is also presented.
Davidovic, Dragomir +2 more
core +1 more source
Star Formation with Adaptive Mesh Refinement Radiation Hydrodynamics [PDF]
, 2010 I provide a pedagogic review of adaptive mesh refinement (AMR) radiation hydrodynamics (RHD) methods and codes used in simulations of star formation, at a level suitable for researchers who are not computational experts.
Commerçon +9 more
core +1 more source
Milling Force Model for Aviation Aluminum Alloy: Academic Insight and Perspective Analysis
, 2021 Aluminum alloy is the main structural material of aircraft, launch vehicle, spaceship, and space station and is processed by milling. However, tool wear and vibration are the bottlenecks in the milling process of aviation aluminum alloy.
Zhen-Ya Duan +15 more
semanticscholar +1 more source
Expanding Space: the Root of all Evil? [PDF]
, 2007 While it remains the staple of virtually all cosmological teaching, the concept of expanding space in explaining the increasing separation of galaxies has recently come under fire as a dangerous idea whose application leads to the development of ...
Chodorowski +10 more
core +1 more source
A New Algorithm for 2-D Transport for Astrophysical Simulations: I. General Formulation and Tests for the 1-D Spherical Case [PDF]
, 2006 We derive new equations using the mixed-frame approach for one- and two-dimensional (axisymmetric) time-dependent radiation transport and the associated couplings with matter.
Burrows, Adam, Hubeny, Ivan
core +2 more sources
Radiation 'damping' in atomic photonic crystals [PDF]
, 2010 The force exerted on a material by an incident beam of light is dependent upon the material's velocity in the laboratory frame of reference. This velocity dependence is known to be diffcult to measure, as it is proportional to the incident optical power ...
Artoni, M. +2 more
core +3 more sources
Extension of the QuickFF force field protocol for an improved accuracy of structural, vibrational, mechanical and thermal properties of metal-organic frameworks [PDF]
, 2018 QuickFF was originally launched in 2015 to derive accurate force fields for isolated and complex molecular systems in a quick and easy way. Apart from the general applicability, the functionality was especially tested for metal-organic frameworks (MOFs),
Van Speybroeck, Veronique +5 more
core +2 more sources
Full and half-wavelength ultrasonic percussive drills [PDF]
, 2018 Ultrasonic-percussive drills are a leading technology for small rock drilling applications where power and weight-on-bit are at a premium. The concept uses ultrasonic vibrations to excite an oscillatory motion in a free-mass, which then delivers ...
Harkness, Patrick +2 more
core +1 more source