Results 121 to 130 of about 113,191 (310)

Thermal and stress analysis of an Attached Inflatable Decelerator /AID/ deployed in the Mars and Earth atmospheres [PDF]

Trajectory, thermodynamic, and stress analyses of spacecraft inflatable decelerators in Mars and Earth ...
Burgess, J. L., Faurote, G. L.
core   +1 more source

Data assimilation insights on selecting the most valuable atmospheric measurements [PDF]

, 2012
We discuss how objective guidance on selecting the most valuable atmospheric measurements on future Mars spacecraft missions can be provided through already developed Martian atmospheric data assimilation systems, and in particular through Observing ...
Forget, F., Greybush, S. J., Hoffman, M. J., Hoffman, R., Ide, K., Kalnay, E., Lewis, S. R., McConnochie, T. H., Miyoshi, T., Montabone, L., Wilson, R. J.   +10 more
core  

X‐Functionality–Driven Photocatalytic Hydrogen Evolution in 2D 4‐X‐PEA2SnI4 Perovskites

Advanced Functional Materials, EarlyView.
We report a water‐based synthesis of 2D 4‐X‐PEA2SnI4 perovskite microcrystals with prominent photocatalytic (PC) activity for H2 production. The synergy between organic functionalization and HI‐derived iodide scavenges holes suppress octahedral distortion, and favor electron accumulation, enabling a PC H2 evolution ∼20 µmol·g−1 and long‐term stability ...
Taeyeon Kim, Gayoung Seo, Seong Yeon Park, Juwon Jang, Yunho Ahn, Samiksha Mukesh Jain, Samrat Das Adhikari, Harumi Correa‐Leiva, Ignacio Utreras‐Asenjo, Oscar A. Douglas‐Gallardo, Carina Pareja‐Rivera, Kayoung Cho, Byeongsung Kim, Jhonatan Rodriguez‐Pereira, Eunseo Choi, JaeHong Park, Jin Ho Bang, Danilo H. Jara‐Quinteros, Sixto Giménez, Seog Joon Yoon, Andrés F. Gualdrón‐Reyes, Iván Mora‐Seró   +21 more
wiley   +1 more source

Feasibility study of an optical radiometer for determining the composition of the Mars atmosphere from shock layer radiation during entry, volume II Final report [PDF]

Optical radiometer feasibility study for determining composition of Mars atmosphere from shock layer radiation during entry ...
Hull, J. A., Schweiger, R. N., Shumsky, J.   +2 more
core   +1 more source

Curvature‐Tuned Friction at Electrified Ionic Liquid Interfaces

Advanced Functional Materials, EarlyView.
Graphene curvature plays a key role in friction electrotunability at single‐asperity contacts lubricated by ionic liquids. A 9 nm radius yields stronger tunability than larger radii, with distinct friction coefficients at low and high loads indicating a shift in the slippage plane.
Wei Song, Md Ashiqur Rahman, Qianlu Zheng, Nathaniel Hawthorne, James D. Batteas, Rui Qiao, Rosa M. Espinosa‐Marzal   +6 more
wiley   +1 more source

A Technique for Retrieving the Exospheric Number Density Distribution from Pickup Ion Ring Distributions

The Planetary Science Journal
Ion pickup by the solar wind is ubiquitous in space plasma. Because pickup ions are originally produced by ionization of an exospheric neutral atmosphere, their measurements contain information on the exospheric neutral abundance.
Kei Masunaga, Naoki Terada, François Leblanc, Yuki Harada, Takuya Hara, Shotaro Sakai, Shoichiro Yokota, Kanako Seki, Atsushi Yamazaki, James. P. McFadden, Tomohiro Usui   +10 more
doaj   +1 more source

Study of technology requirements for atmosphere braking to orbit about Mars and Venus. Volume 1 - Summary, January - October 1967 [PDF]

Technology requirements and spacecraft design studies for atmosphere braking to orbit about Mars and ...
Repic, E. M.
core   +1 more source

In-situ acoustic-based analysis system for physical and chemical properties of the lower Martian atmosphere

, 2004
The Environmental Acoustic Reconnaissance and Sounding experiment (EARS), is composed of two parts: the Environmental Acoustic Reconnaissance (EAR) instrument and the Environmental Acoustic Sounding Experiment (EASE).
A. Petri, Bass, F.A. Farrelly, G. Pontuale, Hill, Kinsler, L. Pitolli, Lorenz, Morse, Petropoulos, Press, Shields, Trengove, Van den Berg, Vesovic, Williams   +15 more
core   +1 more source

Cyclic Olefin Copolymers as Versatile Materials for Advanced Engineering Applications

Advanced Functional Materials, EarlyView.
Cyclic olefin copolymers (COCs) are presented as highly versatile materials combining tunable synthesis, excellent optical properties, and mechanical robustness. Their potential spans microfluidics, bioengineering, and advanced electronics, while emerging self‐healing and sustainable solutions highlight future opportunities.
Giulia Fredi, Norma Mallegni, Andrea Dorigato, Mario Milazzo   +3 more
wiley   +1 more source

An Explainable Deep-learning Model of Proton Auroras on Mars

The Planetary Science Journal
Proton auroras are widely observed on the dayside of Mars, identified as a significant intensity enhancement in the hydrogen Ly α (121.6 nm) emission at altitudes of ∼110 and 150 km.
Dattaraj B. Dhuri, Dimitra Atri, Ahmed AlHantoobi   +2 more
doaj   +1 more source