Danger from welding fumes. Free Technical Library News

NEWS OF SCIENCE AND TECHNOLOGY, NOVELTY IN ELECTRONICS
Free technical library / timeline

Danger of welding fumes

10.01.2019

An international team of scientists has found that no matter what type of electrode is used, welding will still produce harmful smoke.

This smoke will always contain solid nanoparticles of oxides of iron, manganese, silicone (about 41%, 18% and 6% respectively), as well as chromium. The average particle diameter is 5 nanometers, but there are also smaller ones among them. Metal oxidation products are generally toxic, but particles approaching 1 nanometer in size are of particular danger - it is known that they can even penetrate the human nervous system.

Particles in air suspension can move with air currents far beyond the area where the welder worked, and this must be taken into account in safety regulations.

<< Back: Tests of the prototype Martian drilling rig 10.01.2019

>> Forward: Crow superpowers 09.01.2019

Latest news of science and technology, new electronics:

The existence of an entropy rule for quantum entanglement has been proven 09.05.2024

Quantum mechanics continues to amaze us with its mysterious phenomena and unexpected discoveries. Recently, Bartosz Regula from the RIKEN Center for Quantum Computing and Ludovico Lamy from the University of Amsterdam presented a new discovery that concerns quantum entanglement and its relation to entropy. Quantum entanglement plays an important role in modern quantum information science and technology. However, the complexity of its structure makes understanding and managing it challenging. Regulus and Lamy's discovery shows that quantum entanglement follows an entropy rule similar to that for classical systems. This discovery opens new perspectives in the field of quantum information science and technology, deepening our understanding of quantum entanglement and its connection to thermodynamics. The results of the study indicate the possibility of reversibility of entanglement transformations, which could greatly simplify their use in various quantum technologies. Opening a new rule ... >>

Mini air conditioner Sony Reon Pocket 5 09.05.2024

Summer is a time for relaxation and travel, but often the heat can turn this time into an unbearable torment. Meet a new product from Sony - the Reon Pocket 5 mini-air conditioner, which promises to make summer more comfortable for its users. Sony has introduced a unique device - the Reon Pocket 5 mini-conditioner, which provides body cooling on hot days. With it, users can enjoy coolness anytime, anywhere by simply wearing it around their neck. This mini air conditioner is equipped with automatic adjustment of operating modes, as well as temperature and humidity sensors. Thanks to innovative technologies, Reon Pocket 5 adjusts its operation depending on the user's activity and environmental conditions. Users can easily adjust the temperature using a dedicated mobile app connected via Bluetooth. Additionally, specially designed T-shirts and shorts are available for convenience, to which a mini air conditioner can be attached. The device can oh ... >>

Energy from space for Starship 08.05.2024

Producing solar energy in space is becoming more feasible with the advent of new technologies and the development of space programs. The head of the startup Virtus Solis shared his vision of using SpaceX's Starship to create orbital power plants capable of powering the Earth. Startup Virtus Solis has unveiled an ambitious project to create orbital power plants using SpaceX's Starship. This idea could significantly change the field of solar energy production, making it more accessible and cheaper. The core of the startup's plan is to reduce the cost of launching satellites into space using Starship. This technological breakthrough is expected to make solar energy production in space more competitive with traditional energy sources. Virtual Solis plans to build large photovoltaic panels in orbit, using Starship to deliver the necessary equipment. However, one of the key challenges ... >>

New method for creating powerful batteries 08.05.2024

With the development of technology and the expanding use of electronics, the issue of creating efficient and safe energy sources is becoming increasingly urgent. Researchers at the University of Queensland have unveiled a new approach to creating high-power zinc-based batteries that could change the landscape of the energy industry. One of the main problems with traditional water-based rechargeable batteries was their low voltage, which limited their use in modern devices. But thanks to a new method developed by scientists, this drawback has been successfully overcome. As part of their research, scientists turned to a special organic compound - catechol. It turned out to be an important component that can improve battery stability and increase its efficiency. This approach has led to a significant increase in the voltage of zinc-ion batteries, making them more competitive. According to scientists, such batteries have several advantages. They have b ... >>

Alcohol content of warm beer 07.05.2024

Beer, as one of the most common alcoholic drinks, has its own unique taste, which can change depending on the temperature of consumption. A new study by an international team of scientists has found that beer temperature has a significant impact on the perception of alcoholic taste. The study, led by materials scientist Lei Jiang, found that at different temperatures, ethanol and water molecules form different types of clusters, which affects the perception of alcoholic taste. At low temperatures, more pyramid-like clusters form, which reduces the pungency of the "ethanol" taste and makes the drink taste less alcoholic. On the contrary, as the temperature increases, the clusters become more chain-like, resulting in a more pronounced alcoholic taste. This explains why the taste of some alcoholic drinks, such as baijiu, can change depending on temperature. The data obtained opens up new prospects for beverage manufacturers, ... >>

Random news from the Archive

Pregnant women should talk less on cell phones 31.03.2012

The impact of mobile phone radiation on humans has been studied for a long time, and so far no clear arguments have been made either in favor of their safety or in favor of a potential threat to health. A new study from Yale Medical School suggests that the danger still exists, and that pregnant women should generally isolate themselves from the outside world if possible.

According to the results of the study, the exposure of a woman to a mobile phone during pregnancy can affect the development of the brain in the fetus and lead to the so-called attention deficit hyperactivity disorder (ADHD) in the child. However, scientists immediately stipulate that there are no reasons for panic yet, the objects of the study were not people, but mice.

As part of the experiment, scientists placed a mobile phone with the sound off on the surface of a cage with pregnant mice, the device was active during the entire pregnancy of females. After the cubs were born and raised, the researchers measured the electrical activity of their brains, as well as conducted a series of psychological and behavioral tests. They found that mice exposed to RF radiation tended to be hyperactive and had reduced memory capacity. The head of the research team, Professor Hugh S Taylor, is confident that mobile phone radiation has influenced the development of neurons in the lobes of the prefrontal cortex of the brain.

ADHD, according to many scientists, has its roots in this part of the brain. So despite the fact that rodent pregnancies last only 19 days, and the cubs are born with brains less developed than human babies, Professor Taylor is confident that pregnant women need to limit cell phone use.

See full Archive of science and technology news, new electronics

All languages of this page

Home page | Library | Articles | Website map | Site Reviews