Results 31 to 40 of about 9,301 (243)

Enhancing Damage Tolerance of Structures Using 3D/4D Printing Technologies

Advanced Materials Technologies, EarlyView.
This review highlights recent advances in damage tolerance for structural design, emphasizing safety, durability, and reliability in fields like aerospace and civil engineering. It covers innovations in materials, 3D/4D printing, predictive design methods, and nature‐inspired strategies.
Morteza Sayah Irani, Sadegh Ranjbar, Mohammad Lakhi, Ali Zolfagharian   +3 more
wiley   +1 more source

Mellitic Acid as a Stable Abiotic Precursor for Liquid‐Liquid Phase Separation: An RNA‐Independent Pathway for Prebiotic Compartmentalization

Chemistry – A European Journal, EarlyView.
Evidence is presented that prebiotically accessible mellitic (benzenehexacarboxylic) acid (MAc) is forming liquid droplets with short poly‐L‐lysine. The capacity of MAc to induce liquid‐liquid phase separation with short oligocations, along with abiotic synthesis routes, makes MAc a viable candidate for an ingredient of early prebiotic membraneless ...
Robert Dec, Michel W Jaworek, Matylda Wacławska, Wojciech Dzwolak, Roland Winter   +4 more
wiley   +1 more source

Numerical Simulations of the Lunar Penetrating Radar and Investigations of the Geological Structures of the Lunar Regolith Layer at the Chang’E 3 Landing Site

International Journal of Antennas and Propagation, 2017
In the process of lunar exploration, and specifically when studying lunar surface structure and thickness, the established lunar regolith model is usually a uniform and ideal structural model, which is not well-suited to describe the real structure of ...
Chunyu Ding, Yan Su, Shuguo Xing, Shun Dai, Yuan Xiao, Jianqing Feng, Danqing Liu, Chunlai Li   +7 more
doaj   +1 more source

Effects of Low-Temperature Plasma-Sterilization on Mars Analog Soil Samples Mixed with Deinococcus radiodurans

Life, 2016
We used Ar plasma-sterilization at a temperature below 80 °C to examine its effects on the viability of microorganisms when intermixed with tested soil.
Janosch Schirmack, Marcel Fiebrandt, Katharina Stapelmann, Dirk Schulze-Makuch   +3 more
doaj   +1 more source

Middle to Late Pleistocene valley‐slope cambering: The interglacial basin at Wing, Rutland, England

Journal of Quaternary Science, EarlyView.
ABSTRACT A depression in the Jurassic bedrock at Wing, Rutland (eastern England), is infilled by deposits spanning the Late Wolstonian (=Late Saalian) to Early Devensian (=Early Weichselian) substages, including the most complete Ipswichian Stage (=Eemian Stage; ~Marine Isotope Stage 5e) sequence known in Britain. This sequence forms an enclosed pocket,
Philip Gibbard, Philip Hughes, John Lewin   +2 more
wiley   +1 more source

Investigation of the melting behavior of laser-melted lunar regolith simulant for in-situ construction

Journal of Materials Research and Technology
Additive manufacturing of lunar regolith is one of the most promising methods for lunar surface construction. In order to obtain excellent formability of lunar regolith, the interaction between laser and lunar regolith has to be studied in detail.
Fen Dang, Zekai Wang, Yuan Li, Wucheng Sun, Yan Zhou, Cheng Zhou   +5 more
doaj   +1 more source

Evidence of Potential Organo-Mineral Interactions during the First Stage of Mars Terraforming

Soil Systems, 2023
Future space missions to Mars will depend on the development of bioregenerative life support systems. Mars regolith contains most of the nutrients needed for plant growth, but not organic matter (OM).
Beatrice Giannetta, Antonio G. Caporale, Danilo Olivera de Souza, Paola Adamo, Claudio Zaccone   +4 more
doaj   +1 more source

Periglacial Vegetation‐Banked Terraces: A Global Survey

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Periglacial vegetation‐banked terraces (VBTs) are roughly parallel, step‐like landforms with bare treads and vegetated risers, where tread length (across‐slope) markedly exceeds tread width (downslope). Many follow the contour, but others dip off‐contour at angles of up to 40°.
Colin K. Ballantyne
wiley   +1 more source

Research progress on the adaptability of lunar regolith simulant-based composites and lunar base construction methods

International Journal of Mining Science and Technology
The development and utilization of lunar resources are entering a critical stage. Immediate focus is needed on key technologies for in-situ resource utilization (ISRU) and lunar base construction.
Bo Liu, Peng Sun, Wei Yao, Tao Li, Wei Xu   +4 more
doaj   +1 more source

A Study Demonstrating That Using Gravitational Offset to Prepare Extraterrestrial Mobility Missions Is Misleading

Journal of Field Robotics, EarlyView.
ABSTRACT Recently, there has been a surge of international interest in extraterrestrial exploration targeting the Moon, Mars, the moons of Mars, and various asteroids. This contribution discusses how current state‐of‐the‐art Earth‐based testing for designing rovers and landers for these missions currently leads to overly optimistic conclusions about ...
Wei Hu, Pei Li, Arno Rogg, Alexander Schepelmann, Samuel Chandler, Ken Kamrin, Dan Negrut   +6 more
wiley   +1 more source