Results 101 to 110 of about 836,303 (288)

From Mission to Church: Nature, Spatiality, and Catholicism in Kikwit (DRC)

open access: yesReligions
This study explores nature’s role in the spatial development of the local Roman Catholic Church in Kikwit, a mid-size city in the Democratic Republic of Congo.
Mick Feyaerts
doaj   +1 more source

Self‐Cooling Molecular Spin Qudits

open access: yesAdvanced Materials, EarlyView.
A material made of [GdEr] molecular dimers can encode a qudit and perform as a magnetic refrigerant. Microwave resonant pulses coherently manipulate its 16 spin states, while direct demagnetization measurements cool the material and a device down to temperatures below 1 K.
Elías Palacios   +12 more
wiley   +1 more source

Gravitational capture opportunites for asteroid retrieval missions [PDF]

open access: yes, 2012
Asteroids and comets are of strategic importance for science in an effort to uncover the formation, evolution and composition of the Solar System. Near-Earth objects (NEOs) are of particular interest because of its accessibility from Earth, but also ...
Alessi, Elisa Maria   +3 more
core  

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

open access: yesAdvanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades   +7 more
wiley   +1 more source

Potential Advantages of Conducting Short Duration Visits to the Martian Surface [PDF]

open access: yes
Recent NASA concepts for human missions to Mars, including the Evolvable Mars Campaign and Design Reference Architecture 5.0, have focused on the conduct of missions with long duration stays on the Martian surface.
Cirillo, William M.   +4 more
core   +1 more source

Reactive Carbide‐Based Synthesis and Microstructure of NASICON Sodium Metal All Solid‐State Electrolyte

open access: yesAdvanced Materials, EarlyView.
Sodium Metal All‐Solid State Batteries (Na‐ASSBs) are enabled by the synthesis of the solid state electrolyte, NASICON (Na1+xZr2SixP3‐xO12), using carbide‐based precursor compounds (ZrC and SiC); resulting in dense, pure, and mechanically improved microstructure.
Callum J. Campbell   +10 more
wiley   +1 more source

Advanced electrostatic ion thruster for space propulsion [PDF]

open access: yes
The suitability of the baseline 30 cm thruster for future space missions was examined. Preliminary design concepts for several advanced thrusters were developed to assess the potential practical difficulties of a new design.
Gelon, W.   +5 more
core   +1 more source

Teleoperator systems for manned space missions [PDF]

open access: yes, 1972
The development of remote mechanical systems to augment man's capabilities in our manned space effort is considered. A teleoperator system extends man's innate intelligence and sensory capabilities to distant hostile and hazardous environments through a ...
Interian, A.
core   +1 more source

Radiation‐Resistant Aluminum Alloy for Space Missions in the Extreme Environment of the Solar System

open access: yesAdvanced Materials, EarlyView.
A novel ultrafine‐grained aluminum crossover alloy exhibits unprecedented radiation resistance and mechanical stability under extreme irradiation doses up to 100 dpa. The exceptional resilience arises from thermodynamically stable T‐phase precipitates, enabling lightweight structural materials for next‐generation spacecraft and extraterrestrial ...
Patrick D. Willenshofer   +9 more
wiley   +1 more source

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