Results 11 to 20 of about 1,307,984 (295)
Lightweight Floating Platform for Ground-Based Emulation of On-Orbit Scenarios
IEEE Access, 2023 Orbital space operations must be executed safely and reliably to prevent unwanted failures. One way to validate these operations on Earth is by using testbed facilities that emulate zero-gravity conditions. This article presents the design and evaluation
Baris Can Yalcin +4 more
doaj +1 more source
REALMS: Resilient exploration and lunar mapping system
Frontiers in Robotics and AI, 2023 Space resource utilisation is opening a new space era. The scientific proof of the presence of water ice on the south pole of the Moon, the recent advances in oxygen extraction from lunar regolith, and its use as a material to build shelters are ...
D. van der Meer +6 more
doaj +1 more source
SORA Methodology for Multi-UAS Airframe Inspections in an Airport
Drones, 2021 Deploying Unmanned Aircraft Systems (UAS) in safety- and business-critical operations requires demonstrating compliance with applicable regulations and a comprehensive understanding of the residual risk associated with the UAS operation. To support these
Carol Martinez +4 more
doaj +1 more source
Comparison of Inhaler Device Techniques Before and After Training in Patients with Chronic Obstructive Pulmonary Disease [PDF]
Journal of Clinical and Diagnostic Research, 2021 Introduction: In the treatment of Chronic Obstructive Pulmonary Disease (COPD), the administration of drugs with an inhaler is often used. Improper usage of inhaler devices can result in suboptimal therapeutic effects which inturn can lead to the ...
S RAJESH KUMAR JAIN
doaj +1 more source
The Effect of Bottom Reinforcement Spacers on Reinforced Concrete Structures Loaded by Explosion
Buildings, 2023 Plastic spacers create a linear and systemic weakening of the structure. The extreme loading of the structure tests the structure itself to its load-bearing limit or even locally exceeds this limit, thus revealing all its weak points, which are the ...
Eva Zezulová +4 more
doaj +1 more source
PMMA Bone Cement: Antibiotic Elution and Mechanical Properties in the Context of Clinical Use
Biomedicines, 2022 This literature review discusses the use of antibiotic loaded polymethylmethacrylate bone cements in arthroplasty. The clinically relevant differences that have to be considered when antibiotic loaded bone cements (ALBC) are used either for long-term ...
Sebastian Philipp von Hertzberg-Boelch +3 more
doaj +1 more source
Phase transitions in complex functional liquid crystals—The entropy effect
Frontiers in Soft Matter, 2023 Liquid crystal design and synthesis are being driven towards always more complexity. The self-assembly of poly- and shape-amphiphiles allow tailoring the soft material structures with double and even triple nanosegregation of functional building blocks ...
Matthias Lehmann, Matthias Lehmann
doaj +1 more source
Oxidation of Alloy X-750 with Low Iron Content in Simulated BWR Environment
Journal of Nuclear Engineering, 2023 This paper presents an investigation of the oxidation of Alloy X-750 containing 5 wt% iron in a simulated boiling water reactor (BWR) environment. The specimens were exposed by a water jet (10 m/s) at 286 °C for durations ranging from 2 to 840 h, and the
Silvia Tuzi +2 more
doaj +1 more source
Asymmetric Thermal and Water Vapor Transport of Polyester Spacer and Cotton Nonwoven Fabric Assembly
Journal of Natural Fibers, 2023 Spacer fabric is often used in cushions, footwear, filter material, and other products because of its high air permeability and three-dimensional (3D) structure. However, for practical applications, it is typically combined with other materials.
Qing Chen +5 more
doaj +1 more source
Energies, 2022 Spacers for the HVDC GIS/GIL play an important role in mechanically supporting conductors and separating compartments. At the same time, their insulation performance affects the stability and safety of system operation.
Haoluan Li +4 more
doaj +1 more source