2024
Entries
Graphene-based supercapacitors offer several key benefits that make them an attractive option for next-generation energy storage devices. The graphene-derived supercapacitors become the preferred choice due to their standout features –they are the next generation energy storage systems:
1. High Energy Density: Graphene is immediately apparent in its possession of a larger surface area,
NASA Langley Research Center has developed multiple ways for amorphous robots to autonomously move across a surface without needing conventional wheels or legs. Amorphous robots are useful in dusty and sandy environments in which greater mobility, passive shape changing, and immunity to dust and contamination are important. This includes both surface and subsurface robotic exploration.
Highly capable small UAVs provide substantial business opportunity, especially if allowed to operate in the suburban market. Reliability issues force the use of a safety pilot for each vehicle in operation, which is cost-prohibitive for large scale commercial applications and limits the use of these vehicles to line-of-site (LOS) operation.
Enabling computing systems to understand user interactions with everyday surfaces and objects can drive a wide range of applications. However, existing vibration-based sensors (e.g., accelerometers) lack the sensitivity to detect light touch gestures or the bandwidth to recognize activity containing high-frequency components. Conversely, microphones are highly susceptible to environmental noise, degrading performance.
The observed birds gliding flight performance studies indicate that their aerodynamic drag is lower than expected for their flight regime [1], and the best “sailing” birds (condor, vulture, albatross, etc.), have black feathers, a quite unattractive matting attribute...
Also, birds contour feathers barbs and barbules are covered by a nano- scale smooth layer of beta keratin,
In nuclear fusion, two nuclei of light atoms, generally hydrogen and its isotopes (deuterium and tritium), join together to form another heavier nucleus. These reactions can release pollution-free fusion energy. An example of fusion reactions are those that take place in the sun,
Kids with ADHD and autism struggle with focus, learning, and social interactions. This affects their school performance, exposes them to peer judgment, and increases the risk of substance use.Drug and behavioral treatments often fall short due to side effects and costs. Neurofeedback, a proven method, offers side-effect-free benefits. However, it has limitations,
PROBLEM: One of the problems with beam scaling systems, as well as command systems, is that the surface-to-air missile must have great maneuverability to intercept an evasive target. As they approach a target, beam-scaling missiles generally must adjust their turns to continue the rate of climb against the target. At high speeds,
Currently the depletion of fossil fuels, global warming, environmental pollution and greenhouse gas emissions, among other problems that affect our environment, show us the need for a change in the distribution of our energy matrix towards the use of less polluting and renewable energy, that is, obtained from natural sources.
The increasing costs of fuels,
Diesel engines are widely used in heavy-duty road vehicles, marine vessels and power generation, while burners are used in various factories as a heat source. Emulsion fuel is one of promising alternative fuel for Diesel engines that can reduce fuel consumption and emissions. However, in order to stabilise the fuel, it require additive known as surfactant.
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