Results 31 to 40 of about 28,575 (178)

Self-Sustaining Living Habitats in Extraterrestrial Environments

Astrobiology
Standard definitions of habitability assume that life requires the presence of planetary gravity wells to stabilize liquid water and regulate surface temperature. Here the consequences of relaxing this assumption are evaluated. Temperature, pressure, volatile loss, radiation levels and nutrient availability all appear to be surmountable obstacles to ...
R. Wordsworth, C. Cockell
openaire   +2 more sources

Can Solar‐Powered Irrigation Systems Naturally Meet Crop Water Requirements? Proof of Concept From a Case Study in Sub‐Saharan Africa

Irrigation and Drainage, EarlyView.
ABSTRACT Irrigation scheduling is crucial for ensuring precise water delivery to crops. However, in many sub‐Saharan African irrigation schemes, water is applied without considering crop water needs, resulting in low crop water productivity and low yields. Solar‐powered irrigation systems can automatically meet these needs by utilizing solar radiation,
Eric Oppong Danso, Christiana Dietzen, William Akortey, Bernard Kwabena Boadi Mensah, Peter Bilson Obour, John Bright Amoah Nyasapoh, Ebenezer Agyapong, Elorm Grace Ayayi, Nana Oduro Osei Bonsu, Michael Osei Adu, Emmanuel Arthur, Jacob Ulzen, Thomas Atta‐Darkwa, Edward Benjamin Sabi, Stephen Abenney‐Mickson, Mathias Neumann Andersen   +15 more
wiley   +1 more source

The Stability of Manganese Oxides Under Laser Irradiation During Raman Analyses: II. Layer Structures

Journal of Raman Spectroscopy, EarlyView.
Manganese oxides are important geomaterials with diverse technological applications. Here, we investigate the behaviour of the most common Mn oxides with layer structures under irradiation by a 532‐nm laser, with intensity ranging from 23 µW/µm2 to 36.8 mW/µm2.
Simone Bernardini, Giancarlo Della Ventura, Luigi Jovane, Armida Sodo, Boriana Mihailova   +4 more
wiley   +1 more source

Prebiotic Organic Globules [PDF]

, 2010
Analogs of organic globules observed in carbonaceous chondrite meteorites and in interplanetary dust particles and of rod to spherical structures observed in terrestrial archean microstructures have been synthesized in our experiments conducted with ...
Marie-Paule Bassez, Yoshinori Takano
core   +1 more source

Sustainability of organic zucchini in Mediterranean environment: an on‐farm experimentation

Journal of the Science of Food and Agriculture, EarlyView.
Abstract BACKGROUND Excess inputs are commonly applied to high‐value crops to ensure high performance. This study hypothesizes that farmers can reduce inputs without compromising yields and aims to investigate the effects of varying irrigation and fertilization strategies on two zucchini genotypes (‘Logos’ and ‘Atlantis’) organically grown under ...
Gaetano Roberto Pesce, Salvatore Alfio Salicola, Claudia Formenti, Gaetano Pandino, Giovanni Mauromicale, Sara Lombardo   +5 more
wiley   +1 more source

Virulence as a Model for Interplanetary and Interstellar Colonisation - Parasitism or Mutualism

, 2013
In the light of current scientific assessments of human-induced climate change, we investigate an experimental model to inform how resource-use strategies may influence interplanetary and interstellar colonisation by intelligent civilisations.
Forgan, Duncan, Starling, Jonathan
core   +1 more source

Advances and Trends in Terrain Classification Methods for Off‐Road Perception

Journal of Field Robotics, EarlyView.
ABSTRACT Off‐road autonomous vehicles (OAVs) are becoming increasingly popular for navigating challenging environments in agriculture, military, and exploration applications. These vehicles face unique challenges, such as unpredictable terrain, dynamic obstacles, and varying environmental conditions.
Tanzila Arafin, Anwar Hosen, Zoran Najdovski, Lei Wei, Mohammad Rokonuzzaman, Michael Johnstone   +5 more
wiley   +1 more source

Photosynthesis and Photo-Stability of Nucleic Acids in Prebiotic Extraterrestrial Environments [PDF]

, 2014
Laboratory experiments have shown that the UV photo-irradiation of low-temperature ices of astrophysical interest leads to the formation of organic molecules, including molecules important for biology such as amino acids, quinones, and amphiphiles. When pyrimidine is introduced into these ices, the products of irradiation include the nucleobases uracil,
Michel Nuevo, Michel Nuevo, Christopher K. Materese, Timothy J. Lee, Scott A. Sandford, Partha P. Bera   +5 more
openaire   +3 more sources

The Search for Extraterrestrial Intelligence (SETI) [PDF]

, 1977
A bibliography of reports concerning the Search for Extraterrestrial Intelligence is presented. Cosmic evolution, space communication, and technological advances are discussed along with search strategies and search ...
Billingham, John, Morrison, Philip, Wolfe, John   +2 more
core   +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