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Encyclopedia of radio electronics and electrical engineering / Beginner radio amateur
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Latest news of science and technology, new electronics:
Artificial leather for touch emulation
15.04.2024
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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The stereotype that women prefer "bad boys" has long been widespread. However, recent research conducted by British scientists from Monash University offers a new perspective on this issue. They looked at how women responded to men's emotional responsibility and willingness to help others. The study's findings could change our understanding of what makes men attractive to women. A study conducted by scientists from Monash University leads to new findings about men's attractiveness to women. In the experiment, women were shown photographs of men with brief stories about their behavior in various situations, including their reaction to an encounter with a homeless person. Some of the men ignored the homeless man, while others helped him, such as buying him food. A study found that men who showed empathy and kindness were more attractive to women compared to men who showed empathy and kindness. ... >>
| Random news from the Archive Stem cells from a test tube
23.11.2012
Canadian and Italian researchers have found a "master control gene" for human blood stem cells. Scientists have found that by turning this gene on and off, an efficient way to grow blood stem cells suitable for clinical use can be obtained.
According to Dr. John Dick, Canadian Professor of Stem Cell Biology, Lead Scientist at the Center for Restorative Medicine and the Ontario Cancer Institute (OCI), and Professor in the Department of Molecular Genetics at the University of Toronto, the scientists' discovery introduces a new paradigm for managing human blood stem cells. The results of the study will soon be published in the journal Cell Stem Cell.
"For the first time in human blood stem cells, we have discovered that a new type of non-coding RNA called miRNA provides a new tactic to control these cells, opening the door to growing them for therapeutic purposes," said Dr. Dick. In 2011, Dr. Dick isolated human blood stem cells in their purest form, as a single stem cell capable of restoring the entire circulatory system.
According to OCI lead author Dr. Eric Lekman, the research team has removed the master control gene - microRNA 126 - that normally controls hundreds of other genes, inhibiting their activity, which in turn leaves the stem cell dormant in an undivided state. The method consisted in creating an excessive number of microRNA-126 binding regions in stem cells using a specially designed virus.
"The virus acts like a sponge, erasing a specific miRNA within the cell. This allows the suppressed genes to become more active, after which we see long-term growth of stem cells, without depletion or malignant changes," said Dr. Lekman. "We have shown that by removing miRNAs, you can grow stem cells while keeping their properties unchanged. This is the key to efficiently growing stem cells for use in patients."
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