The current fireproof materials market is also very diverse and developed. Depending on the function of use, fireproof materials are arranged to ensure safety as well as in accordance with the construction budget. According to the advice of architect Bui The Long (CTA | Creative Architects), fireproof materials are special materials, so it will need professional advice to ensure safety and suitability. In addition, homeowners need to avoid widespread use, causing waste because fireproof materials are quite expensive. However, using fire prevention materials is only the last step to preserve the life and property of users. First of all, it is still necessary to ensure fire prevention from the beginning of construction such as arranging safe and suitable functional areas, arranging reasonable exit doors … For good fire protection for the house, homeowners need to make sure from the first step of construction. For the kitchen area, homeowners need to choose non-combustible materials such as stone, insulation panels, heat-resistant glass… At the same time, homeowners should switch to using induction or infrared stoves to reduce the risk of fire and explosion from gas stoves as well as when using stoves with a capacity of more than 4000W. In addition, the homeowner needs to install a self-cutting circuit breaker and attached safety wires. As for spaces such as karaoke rooms, indoor movie screenings, homeowners should use soundproofing and fireproof materials such as fireproof glass wool. Because these areas have a high risk of fire due to the arrangement of carpets, fabrics, cotton, etc. for drainage and soundproofing.

The current fireproof materials market is also very diverse and developed. Depending on the function of use, fireproof materials are arranged to ensure safety as well as in accordance with the construction budget. According to the advice of architect Bui The Long (CTA | Creative Architects), fireproof materials are special materials, so it will need professional advice to ensure safety and suitability. In addition, homeowners need to avoid widespread use, causing waste because fireproof materials are quite expensive. However, using fire prevention materials is only the last step to preserve the life and property of users. First of all, it is still necessary to ensure fire prevention from the beginning of construction such as arranging safe and suitable functional areas, arranging reasonable exit doors … For good fire protection for the house, homeowners need to make sure from the first step of construction. For the kitchen area, homeowners need to choose non-combustible materials such as stone, insulation panels, heat-resistant glass… At the same time, homeowners should switch to using induction or infrared stoves to reduce the risk of fire and explosion from gas stoves as well as when using stoves with a capacity of more than 4000W. In addition, the homeowner needs to install a self-cutting circuit breaker and attached safety wires. As for spaces such as karaoke rooms, indoor movie screenings, homeowners should use soundproofing and fireproof materials such as fireproof glass wool. Because these areas have a high risk of fire due to the arrangement of carpets, fabrics, cotton, etc. for drainage and soundproofing.

See through smoke and fog, map a person’s blood vessels while monitoring heart rate – without skin contact; look through the silicon wafers to check the quality and composition of the electronic board. Those are some of the many functions of infrared camera new, developed by a team of researchers led by electrical engineers at the University of California San Diego. The camera detects a part of the infrared spectrum known as shortwave infrared light (wavelengths between 1000 and 1400 nanometers), which lies just outside the visible spectrum (400 to 700 nanometers). Shortwave infrared imaging, unlike thermal imaging, detects much longer infrared wavelengths emitted by the body. The camera works by shining short-wave infrared light at an object or area of ​​interest, then converting the reflected low-energy infrared light back to the device into shorter, high-energy wavelengths. than the human eye can see. “It makes invisible light visible,” said Tina Ng, professor of electrical and computer engineering at UC San Diego Jacobs School of Engineering. When technology Infrared imaging has been around for decades, where most systems are expensive, cumbersome, and complex, often requiring a separate camera and monitor. They are also often made with inorganic semiconductors, which are expensive, hard, and contain toxic elements such as arsenic and lead. The infrared camera that Ng’s team has developed overcomes these problems. It combines sensors and display into a slim, compact and simple device. It is made of organic semiconductors, so it is low cost, flexible and safe for use in biomedical applications. It also offers better image resolution than some of its inorganic versions. The camera is made up of multiple layers of semiconductors, each hundreds of nanometers thin, stacked on top of each other. Three of these layers, each made of a different organic polymer, are the key elements of the image: the photodetector layer, the organic light-emitting diode (OLED) display layer, and the blocking layer. electrons in the middle. The photodetector layer absorbs shortwave infrared light (low energy photons) and then generates an electric current. This current flows to the OLED display layer, where it is converted into a visible image (high-energy photons). An intermediate layer, called an electron block, keeps the OLED display layer from losing any current. This is what allows the device to produce clearer images. Another special feature is camera effective in providing optical and electronic indicators. “This makes it multifunctional,” says Li. For example, when the researchers shined infrared light on the back of the subject’s hand, the camera provided an image of the subject’s blood vessels while recording the subject’s heart rate. The researchers also used their infrared camera to see through the fog and a silicon wafer. In one test, they placed an “EXIT” patterned photosphere in a small room filled with smog. In another setting, they placed a photorealist patterned “UCSD” behind a silicon wafer. Infrared light penetrates both smog and silicon, making it possible for the imagineer to see the letters in these illustrations. This would be useful for applications such as helping self-driving cars see in bad weather and checking for silicon faults. The researchers are currently working to improve the performance of this type of camera.

Tattoos discovered on mummies. Recently, through studying mummies at this site, scientists have discovered that ancient Egyptians also tattooed and they are looking for the meaning of those tattoos. Tattoo marks under infrared rays Artisans and workers during the construction of the “Valley of Kings” made their home in a site called Deir el Medina. Here, many tombs and many other artifacts were excavated and revealed many mysteries. In 2014, archaeologist Anne Austin, of the University of Missouri – St.. Louis, USA, and colleagues at the French Institute of Oriental Archeology have studied 3,000-year-old mummies and have made interesting findings. While examining the mummies with infrared light, they found on the seven bodies there were many large tattoos that had never been seen before. The effects of time made the mummy’s skin discolor and darken, but the tattoo marks were still quite visible under infrared light. Through analysis, experts find that these tattoos have many complex details. One of the mummies mentioned above has more than 30 tattoos on the neck, arms, shoulders and back, including symbols, Egyptian hieroglyphs, scarabs, lotus flowers, Horus eyes, and patterns. crosses, and strange motifs. On another mummy, the mark clearly depicts baboons, along with other animals such as cobras and cows. All tattoos have sacred meanings. For example, the bull tattoo is associated with the goddess Hathor, one of the most important deities of ancient Egypt, the embodiment of joy, love, and maternal love, often depicted as a woman. has a bull head and ears. All of the mummies have tattoos of various motifs, with the same tattoo technique as today, with ink and needle tools. What is the purpose? Scientist Anne Austin is working on ancient Egyptian mummies. The purpose of tattooing for the ancient Egyptians is still unknown. Many theories suggest that tattoos are related to fertility, a person’s status, a ritual symbol, a sign of worship, paranormal knowledge, or a representation of a person’s role. priestess. Interestingly, most tattooed Egyptian mummies found to date have been female, suggesting that the tattoo could have been reserved for healers or mighty nuns. Notably, the tattoos are all over the body areas that are not covered. Horus’s eyes were placed on his neck, shoulders and back so that when people looked at this woman from any angle, they would see god’s eyes looking back at them. These findings contradict some previous Egyptian studies that deny women practicing religion. They are seen as objects of lust, or only passively participate in the male-dominated religious system. The characterization of new tattoos on mummies points to the fact that the role of women in religion in ancient Egypt was more complex than previous assumptions about their identity. Although tattoo designs are mostly only available to women, at least one male with the tattoo was discovered using similar Austin’s technique. This male mummy, simply called “Gebelein Man A”, has been on display at the British Museum for more than a century, has markings on its arms that have long been believed to be stains and ignored. In 2018, Daniel Antoine, a British Museum anthropologist using Austin’s technique on the mummy, discovered the traces were actually tattoos of a wild gaur and a Barbary sheep. , is said to represent status, power and masculine solidity. A female mummy on display was also found tattooed with S-shaped symbols that had never been noticed before. Both sets of tattoos are also important as the above mummies are even older than the ones found at Deir el Medina, more than 5,000 years ago, the period before the Egyptian hieroglyphs were used. . The bodies of these two were buried in ordinary graves but naturally preserved by the heat, arid desert. With these new findings, it is thought that tattoos were probably more widespread in Ancient Egypt than previously thought. The use of infrared imaging techniques to re-examine Egyptian mummies is an effective way to learn more about this custom and gain insight into mysterious people. Austin hopes it will shed some light on this dim area of ​​history. “The tattoos reveal new information that was unprecedented in the textual documents, helping us to better understand the role of women in ancient Egypt,” she said. However, many questions remain, such as: Why did the ancient Egyptians get tattoos and what do they really mean? What do tattoos tell us about this ancient civilization? Hope the time will clear up these mysteries ”.