Results 201 to 210 of about 1,117,135 (403)

Earthquake-Induced Waste Repurposing: A Sustainable Solution for Post-Earthquake Debris Management in Urban Construction

open access: yesBuildings
Product sustainability has moved beyond being an elective preference to becoming a certain necessity. However, earthquakes in different regions, particularly Türkiye–Syria, Afghanistan, and Morocco, have produced a substantial amount of construction ...
Nurullah Bektaş, Maysam Shmlls
doaj   +1 more source

DebriSense: Terahertz-based Integrated Sensing and Communications (ISAC) for Debris Detection and Classification in the Internet of Space (IoS) [PDF]

open access: yesarXiv
The proliferation of Low Earth Orbit (LEO) satellite constellations has intensified the challenge of space debris management. This paper introduces DebriSense-THz, a novel Terahertz-Enabled Debris Sensing system for LEO satellites that leverages Integrated Sensing and Communications (ISAC) technology.
arxiv  

Accumulation and fragmentation of plastic debris in global environments

open access: yesPhilosophical Transactions of the Royal Society B: Biological Sciences, 2009
D. Barnes   +3 more
semanticscholar   +1 more source

Transmembrane Activation of Catalysis and Protein Refolding in Synthetic Cells by Enzymes and Nanozymes

open access: yesAdvanced Functional Materials, EarlyView.
Synthetic cells are engineered herein to respond to an external chemical messenger by the activation of intracellular catalysis. The chemical messenger molecules are catalytically generated by an extracellular enzyme or a mineral surface, whereas the intracellular catalysis emerges via direct enzyme activation or via protein refolding.
Dante G. Andersen   +5 more
wiley   +1 more source

Dual-Functional FMCW Waveform for Terahertz Space Debris Detection and Inter-Satellite Communications [PDF]

open access: yesarXiv
Terahertz (THz) band communication, ranging from 0.1 THz to 10 THz, is envisioned as a key enabling technology for next-generation networks and future applications such as inter-satellite communications and environmental sensing. The surging number of space debris in Low Earth Orbit poses a big threat to orbital infrastructure and the development of ...
arxiv  

Covalent Adaptable Networks with Associative Siloxane Exchange Enabled by Amide‐Based Internal Catalysis: Designing for Reprocessability and Extrudability by Increasing the Cross‐Link Density

open access: yesAdvanced Functional Materials, EarlyView.
Internally catalyzed siloxane dynamic chemistry is demonstrated resulting from amides covalently linked through alkyl chains to siloxanes. The alkyl length in the siloxane‐containing monomer tunes the network cross‐link density. Siloxane exchange dynamics are faster with increasing cross‐link density, because associative exchange is second order in ...
Nathan S. Purwanto   +5 more
wiley   +1 more source

Evaluation of canal cleanliness of two rotary file systems with different taper systems: An in vitro scanning electron microscopic study

open access: yesEndodontology
Aim: This study aims to compare and evaluate the amount of debris and smear layer remaining on the root canal walls prepared with TruNatomy and ProTaper Next files using scanning electron microscope (SEM).
Sriram Ravi   +5 more
doaj   +1 more source

High Performance Space Debris Tracking in Complex Skylight Backgrounds with a Large-Scale Dataset [PDF]

open access: yesarXiv
With the rapid development of space exploration, space debris has attracted more attention due to its potential extreme threat, leading to the need for real-time and accurate debris tracking. However, existing methods are mainly based on traditional signal processing, which cannot effectively process the complex background and dense space debris.
arxiv  

Recent Radar Observations of the Sub-Centimeter Orbital Debris Environment [PDF]

open access: yes
The NASA Orbital Debris Program Office (ODPO) has conducted radar observations of the orbital debris environment since the early 1990s to provide measurement data that supports orbital debris models and risk mitigation activities in support of NASA ...
Kennedy, Timothy   +2 more
core   +1 more source

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