Multirate radio modem. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Data transfer
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No description. I did not try to collect. Works at speeds 1200, 2400, 4800, 9600.
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Latest news of science and technology, new electronics:
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In a modern technology world where distance is becoming increasingly commonplace, maintaining connection and a sense of closeness is important. Recent developments in artificial skin by German scientists from Saarland University represent a new era in virtual interactions. German researchers from Saarland University have developed ultra-thin films that can transmit the sensation of touch over a distance. This cutting-edge technology provides new opportunities for virtual communication, especially for those who find themselves far from their loved ones. The ultra-thin films developed by the researchers, just 50 micrometers thick, can be integrated into textiles and worn like a second skin. These films act as sensors that recognize tactile signals from mom or dad, and as actuators that transmit these movements to the baby. Parents' touch to the fabric activates sensors that react to pressure and deform the ultra-thin film. This ... >>
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| Random news from the Archive New biomaterial to replace human bones
17.06.2022
The research team has discovered a biomaterial based on cobalt and chromium that mimics the flexibility of human bones and has excellent wear resistance.
The new biomaterial is proposed to be used for the manufacture of implants, for example, for arthroplasty of the hip or knee joints and bone plates.
To date, most metallic biomaterials are stiffer than human bones and their use as implants results in bone atrophy, a condition in which bone density is reduced due to the destruction of bone substance and structure. And biomaterials with increased flexibility lose their wear resistance.
The authors focused on reducing the gap in Young's modulus between metal implants and human bones. When a material is flexible, it has a low Young's modulus. When it is stiff, Young's modulus is high.
The new biomaterial based on Co-Cr has a low Young's modulus (10-30 GPa), almost the same as human bones, and also has high wear resistance.
The authors used the method of cyclic heat treatment and obtained large single crystals several centimeters in size. The team created the Co-Cr-Al-Si (CCAS) alloy. Its strain recovery rate was 17%, twice that of commercial Ti-Ni shape memory alloys.
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