Ultraviolet germicidal irradiation - Wikipedia, the free encyclopedia - 0 views
Poly(methyl methacrylate) - Wikipedia, the free encyclopedia - 0 views
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Names PMMA has been sold under a variety of brand names and generic names. It is often generically called acrylic glass,[6] although it is chemically unrelated to glass. It is sometimes called simply acrylic, although acrylic can also refer to other polymers or copolymers containing polyacrylonitrile. Other notable trade names include: Plexiglas
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Acrylic paint essentially consists of PMMA suspended in water; however since PMMA is hydrophobic, a substance with both hydrophobic and hydrophilic groups needs to be added to facilitate the suspension.
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Plastic optical fiber used for short distance communication is made from PMMA, and perfluorinated PMMA, clad with fluorinated PMMA, in situations where its flexibility and cheaper installation costs outweigh its poor heat tolerance and higher attenuation over glass fiber.
Alternative dispute resolution - Wikipedia - 0 views
Collaborative law - Wikipedia - 0 views
How Peer to Peer Communities will change the World - 0 views
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role of p2p movement
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historical role
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horizontalisation of human relationships
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Beyond Blockchain: Simple Scalable Cryptocurrencies - The World of Deep Wealth - Medium - 0 views
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I clarify the core elements of cryptocurrency and outline a different approach to designing such currencies rooted in biomimicry
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This post outlines a completely different strategy for implementing cryptocurrencies with completely distributed chains
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Rather than trying to make one global, anonymous, digital cash
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Key (lock) - Wikipedia, the free encyclopedia - 0 views
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Key systems
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Individually keyed system (KD)[edit] With an individually keyed system, each cylinder can be opened by its unique key
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Keyed alike (KA)[edit] This system allows for a number of cylinders to be operated by the same key. It is ideally suited to residential and commercial applications such as front and back doors.
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Smart key - Wikipedia - 0 views
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Keyless Go
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The system works by having a series of LF (low frequency 125 kHz) transmitting antennas both inside and outside the vehicle. The external antennas are located in the door handles. When the vehicle is triggered, either by pulling the handle or touching the handle, an LF signal is transmitted from the antennas to the key. The key becomes activated if it is sufficiently close and it transmits its ID back to the vehicle via RF (Radio frequency >300 MHz) to a receiver located in the vehicle. If the key has the correct ID, the PASE module unlocks the vehicle.
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transmitting low frequency LF signals via the 125 kHz power amplifier block receiving radio frequency RF signals (> 300 MHz) from the built-in ISM receiver block encrypting and decrypting all relevant data signals (security) communicating relevant interface signals with other electronic control units microcontroller
Virtual community - Wikipedia - 0 views
Citizen science - Wikipedia - 0 views
Virtual volunteering - Wikipedia - 0 views
Mass collaboration - Wikipedia - 0 views
Distributed social network - Wikipedia - 0 views
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