In their paper in the journal IEEE Trans Transaction on Biomedical Engineering, the team presented the results of trials on two men with spinal cord injury aged 35 and 63. The system works by connecting a signal generator on the user’s head to an electrode relay in the cortex, through the connection port like wired systems. From there, the tester can move, click and type on the computer keyboard with his or her brain. Transmitter connects to a relay located in the brain cortex, helping people to use wireless computers. Photo: BrainGate. In the test, both candidates were able to achieve typing speed and click accuracy on par with a wired system. At the same time, they can use the system continuously for up to 24 hours at home. “The signals are recorded and transmitted with the same fidelity as a wired system, meaning we can use the same decoding algorithms that we have,” said John Simeral, who leads the team. used with conventional wired equipment ”. “The only difference is that we are no longer physically tied to the devices, which opens up new possibilities for future research,” Simeral added. “With this system, we are able to look at brain activity at home, over the long term, in a way that was previously almost impossible,” said Leigh Hochberg, another team member. This gives us more opportunities to create algorithms that allow people with paralysis to move and work. ” According to the Mashable, The aforementioned study is a significant step forward in the field of neural communication, in which the human brain is directly connected to the computer. Recently, big names in the tech world like Facebook and Elon Musk have also expressed interest in this area. Simple device is placed on top of research candidate. Photo: Radiofiji. In 2020, Elon Musk’s startup Neuralink introduced a pig named Gertrude, with a computer chip implanted in the brain. Or, as before, in 2021, the company also succeeds in implanting a chip into the monkey brain so that the animal can play video games. However, Brown University’s first human study demonstrates that the technology can be used wirelessly, and it wouldn’t be surprising if we find wearable devices that allow people with disabilities to communicate with them. continue and work better in the future.

Several types of masks are floating, of unknown origin in the market. The reason is that it contains microscopic graphene particles. Inhalation of graphene can cause serious lung damage … How toxic is graphene? According to disseminated information, this mask is sold and distributed by the company Métallifer based in Quebec (Canada). However, during quality testing, the authorities discovered that this disposable mask contained microscopic graphene particles. Graphene is a very thin, durable material used in fabrication, but it can harm the lungs by inhalation and can cause long-term health problems. A team of biologists, engineers and material scientists at Brown University tested graphene’s potential toxicity on human cells. What they found was that the jagged edges of super-sharp and super-hard graphene nanoparticles could easily penetrate cell membranes in human lungs, skin and immune cells. These materials can be inhaled unintentionally or they can be injected or transplanted into the body as components of biomedical technology. Assoc.Prof. Dr. Pham Van Nho, University of Science of Science, Hanoi National University said that graphene or graphene is an atomic thick flat sheet of carbon atoms with sp2 bonds forming a crystal array. honeycomb shape. Its name is composed of “graphite” (graphite) and suffix “-en” (English is “-ene”). Graphene has the ability to fill its electron holes with other electrons almost instantly. Meaning it transferred a large amount of charge in a short amount of time. The graphene in the mask is only a few nanometers in size, a million times thinner than a human hair, easily sensing and preventing tiny particles containing virus molecules. Graphene is the first two-dimensional material found in nature, is 100 times stronger than steel, is paper thin, is more flexible than plastic, and has good resistance to a wide variety of gases and liquids. However, its safety is still controversial. Worry about raw materials to make imported masks Assoc.Prof.Dr Pham Van Nho said that the most dangerous on the market today is not the name of the warning mask mentioned above. The biggest concern is the imported raw materials to make the masks of the manufacturers that do not guarantee the quality. The raw materials for the production of pages of many enterprises are currently imported from the Chinese market. These ingredients are difficult to control origin as well as safety. That is not to mention that many establishments use poor quality chemical fiber fabrics. When used as a mask, it can form particles that cause respiratory toxicity. Or the simplest thing when it comes to exporting masks, the ingredients that are not clean enough are also very harmful to users, especially disposable masks. “Asbestos fibers harm the lungs because they are in the form of microscopic crystal fibers. It can enter the airways and then enter the lungs easily. Masks that use inexpensive ingredients do the same thing. This type of dust is usually very small in diameter, not visible to the naked eye, so there is only way to buy products from reputable brands, which are inspected by safety authorities ”, Assoc.Prof. Dr. Pham Van Nho said . According to Dr. Nguyen Van Thong, former Director of Textile Research Institute, in the current context, the quality of antibacterial fabric for export of pages needs to meet the requirements of conformity certification according to QCVN 01 / BCT: 2017 and bactericidal ability ≥ 90% tested according to AATCC 100: 2012 standard. Research and application of antimicrobial treatment technology for fabrics have been concerned by many units and individuals at different scales. That is the laboratory scale and the industrial scale. Treatment technology and antibacterial fabric production have been applied by many textile and garment enterprises in fabric production according to the requirements of domestic and international customers. With the current equipment conditions, many businesses have enough conditions to develop antibacterial fabrics. Only worrying is the source of imported raw materials with low prices, no quality control as well as the export process of the page. Mr. Nguyen Minh Tuan, Director of the Department of Medical Equipment and Medical Works, Ministry of Health, said that Vietnamese enterprises have been proactively able to export masks to provide for the domestic market and also export to other different market. The possibility of importing masks from China is very low. But to ensure safety in the manufacture of masks, the Department of Medical Equipment and Works will coordinate with relevant agencies to check and inspect those exporting manufacturers using raw materials. Made from China. To buy quality masks, according to Assoc.Prof. Dr. Pham Van Nho, before buying, customers should choose a reputable and reputable manufacturer. Check the outside of the box: When the mask is in its original case, the user should see the information printed on the box. If the parameters are fully printed (name of manufacturer, distributor, barcode number, batch number, manufacturing date, especially the declaration number of the medical device standard), this is the mask. medical. The fabric for fake masks is often mixed with stone powder, so when touching, the mask’s surface will be rough, not soft. Real medical masks have a certain thickness. Proper mask, the inside has a filter. This filter is soft, smooth, thick. Along with the antibacterial filter cloth, this fabric has a different color and texture compared to the other filter layers.