Results 1 to 10 of about 1,109,205 (402)
Orbital Debris-Debris Collision Avoidance [PDF]
Advances in Space Research, 2011 We focus on preventing collisions between debris and debris, for which there is no current, effective mitigation strategy. We investigate the feasibility of using a medium-powered (5 kW) ground-based laser combined with a ground-based telescope to prevent collisions between debris objects in low-Earth orbit (LEO).
Anselmo +22 more
arxiv +6 more sources
Plastic debris in the open ocean [PDF]
Proceedings of the National Academy of Sciences, 2014 Significance High concentrations of floating plastic debris have been reported in remote areas of the ocean, increasing concern about the accumulation of plastic litter on the ocean surface. Since the introduction of plastic materials in the 1950s, the global production of plastic has increased rapidly and will continue in the coming decades.
Cozar, Andres +11 more
openaire +11 more sources
Plastic debris in lakes and reservoirs [PDF]
Nature, 2023 Plastic debris is thought to be widespread in freshwater ecosystems globally1. However, a lack of comprehensive and comparable data makes rigorous assessment of its distribution challenging2,3. Here we present a standardized cross-national survey that assesses the abundance and type of plastic debris (>250 μm) in freshwater ecosystems.
Veronica Nava +78 more
openaire +10 more sources
Metallicity of solar-type stars with debris discs and planets [PDF]
, 2012 Around 16% of the solar-like stars in our neighbourhood show IR-excesses due to debris discs and a fraction of them are known to host planets. We aim to determine in a homogeneous way the metallicity of a sample of stars with known debris discs and planets. Our analysis includes the calculation of the fundamental stellar parameters by applying the iron
A. Mora +63 more
arxiv +6 more sources
Direct Detection of Dark Matter Debris Flows [PDF]
, 2012 Tidal stripping of dark matter from subhalos falling into the Milky Way produces narrow, cold tidal streams as well as more spatially extended "debris flows" in the form of shells, sheets, and plumes. Here we focus on the debris flow in the Via Lactea II simulation, and show that this incompletely phase-mixed material exhibits distinctive high velocity
David N. Spergel +4 more
arxiv +3 more sources
Debris Engine: A Potential Thruster for Space Debris Removal [PDF]
arXiv, 2015 We present a design concept for a space engine that can continuously remove the orbit debris by using the debris as a propellant. Space robotic cleaner is adopted to capture the targeting debris and to transfer them into the engine. Debris with larger size is first disintegrated into small pieces by using a mechanical method. The planetary ball mill is
Lan, Lei, Li, Jingyang, Baoyin, Hexi
arxiv +3 more sources
Development of an open source Debris Flow Simulator for “Sabo” (DFSS) [PDF]
E3S Web of Conferences, 2023 We report the development of an open source “Debris Flow Simulator for Sabo” (DFSS). DFSS consists of three models corresponding to three geomorphological regions (mountain hillside slopes, mountain-to-plain river channels, and lower plains).
Shimizu Takeshi +2 more
doaj +1 more source
Debris development in fretting contacts – Debris particles and debris beds [PDF]
Tribology International, 2020 In this study, the formation and destruction of compacted beds of oxidized debris particles are investigated. Fretting tests of steel specimens were conducted, employing a cylinder-on-flat geometry with displacement amplitude being varied. The debris was examined, both in the form of the debris beds and in the form of loose debris; together, these were
C.J. Bennett +3 more
openaire +2 more sources
Reconstruction of debris flow in the Gerkhozhan-Su river valley based on the chain modeling [PDF]
E3S Web of Conferences, 2023 The paper presents the reconstruction of the most catastrophic debris flows in the Gerkhozhan-Su river valley (North Caucasus, Russia) based on a chain of mathematical models.
Iudina (Kurovskaia) Viktoriia +4 more
doaj +1 more source