Results 51 to 60 of about 1,504 (195)

\u3ci\u3eCapturing Quarantine: Student Pandemic Experience\u3c/i\u3e Journal [PDF]

open access: yes, 2021
Journal entries submitted by the Public History 2021 summer session class at Columbia College Chicago reflecting on aspects of the global pandemic from the student perspective commenting on their personal pandemic timeline and the other is an essay about
Chen, Yulin
core   +1 more source

High-fidelity simulation of a supersonic parachute for Mars descent [PDF]

open access: yes, 2023
The project aims to characterize the unsteady dynamics of the parachute-capsule in a supersonic flow during the descent phase on planetary entry. Presently, Large-Eddy Simulation in combination with an Immersed-Boundary Method is employed to analyze the ...
Barba F. D., Picano F., Placco L.
core   +1 more source

A Shape-Memory Deployable Subsystem with a Large Folding Ratio in China’s Tianwen-1 Mars Exploration Mission

open access: yesEngineering, 2023
Once China’s Tianwen-1 Mars probe arrived in a Mars orbit after a seven-month flight in the deep cold space environment, it would be urgently necessary to monitor its state and the surrounding environment.
Chengjun Zeng   +16 more
doaj   +1 more source

Planetary Entry Probe Dataset: Analysis and Rules of Thumb for Future Missions

open access: yes, 2023
Since the beginning of robotic interplanetary exploration nearly six decades ago, successful atmospheric entry has been accomplished at Venus, Earth, Mars, Jupiter, and Titan.
Girija, Athul Pradeepkumar
core  

In search of signs of life on Mars with China’s sample return mission Tianwen-3 [PDF]

open access: yes
The aim of China’s Mars sample return mission, known as Tianwen-3, is to collect at least 500 g of samples from Mars and return them to Earth around 2031.
Gong, Jianya   +24 more
core   +1 more source

Strengthened inter‐chain π–π contacts in amorphous diketopyrrolopyrrole polymers for robust flexible organic thin‐film transistors

open access: yesFlexMat, EarlyView.
Vinylene‐linked DPP polymers with expanded thiophene donors achieve strengthened interchain π‐π stacking in near‐amorphous films, enabling high charge mobility and outstanding mechanical stability for flexible organic thin‐film transistors. Abstract Flexible organic thin‐film transistors (OTFTs) based on multi‐vinylene‐linked diketopyrrolopyrrole (DPP)
Yanlin Chen   +11 more
wiley   +1 more source

First Observations of Mars Atmosphere and Ionosphere with Tianwen-1 Radio-Occultation Technique on 5 August 2021

open access: yesRemote Sensing, 2022
The radio-occultation technique can provide vertical profiles of planetary ionospheric and atmospheric parameters, which merit the planetary-climate and space-weather scientific research so far.
Xiong Hu   +23 more
doaj   +1 more source

Sampling, Mobility, and Anchoring in Small‐Body Sampling Robots: A Comprehensive Review

open access: yesSmartBot, EarlyView.
Small‐body sampling robots are exploration systems that perform contact, sampling, and stable operations on microgravity bodies such as asteroids and comets. The authors review representative robot architectures and key technologies, focusing on the mechanisms, evolution, and coupling of sampling, mobility, and anchoring.
Yurui Shen   +7 more
wiley   +1 more source

Geological Characteristics and Targets of High Scientific Interest in the Zhurong Landing Region on Mars

open access: yesGeophysical Research Letters, 2021
We used imaging, laser altimeter and thermal infrared data to map a 0.5 by 0.5° area containing the landing site of the Zhurong rover of the Tianwen‐1 mission.
Jiannan Zhao   +7 more
doaj   +1 more source

Ancient ocean coastal deposits imaged on Mars. [PDF]

open access: yes
The northern lowlands of early Mars could have contained a significant quantity of liquid water. However, the ocean hypothesis remains controversial due to the lack of conclusive evidence from the Martian subsurface.
Cardenas, Benjamin   +11 more
core   +1 more source

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