Highway carbon monoxide can threaten health

Researchers at the University of Leeds in the United Kingdom have found that common carbon monoxide in road traffic may disrupt people’s heartbeat.

According to reports from the BBC, researchers at the University of Leeds have found that carbon monoxide affects the resetting of the heart after each beat.
Researchers at the University of Leeds published a report in the American Journal of Respiratory and Critical Care Medicine that a commonly used treatment for angina may reverse this effect of carbon monoxide.
High concentrations of carbon monoxide can prevent blood from transporting oxygen and cause hypoxic reactions in human tissues. Every year, more than 50 people in the UK die of carbon monoxide poisoning, and more people die from it worldwide.
According to the latest research from the University of Leeds, even a low level of carbon monoxide, like the common level in busy traffic avenues in the city, can cause heart damage.
The University of Leeds team found that carbon monoxide causes the sodium channel to open for a long time. The sodium channel is equivalent to the heart's "metron" and plays an important role in controlling the heartbeat. Disturbing the sodium pipeline disrupts the rhythm of the heartbeat, leading to fatal arrhythmias.

Cobalt Based Alloy Powder

Cobalt-based alloy powders are commonly used in plasma transfer arc welding (PTAW) due to their excellent high-temperature properties and resistance to wear and corrosion. These alloys are typically composed of cobalt as the base metal, with various alloying elements such as chromium, tungsten, nickel, and carbon added to enhance specific properties.

The use of cobalt-based alloy powders in PTAW offers several advantages, including:

1. High-temperature strength: Cobalt-based alloys exhibit excellent strength and resistance to deformation at elevated temperatures, making them suitable for welding applications that involve high heat.

2. Wear resistance: These alloys have a high hardness and resistance to wear, making them ideal for welding applications where the welded parts are subjected to abrasive or erosive conditions.

3. Corrosion resistance: Cobalt-based alloys offer good resistance to corrosion, making them suitable for welding applications in aggressive environments, such as those involving chemicals or saltwater.

4. Thermal conductivity: Cobalt-based alloys have good thermal conductivity, allowing for efficient heat transfer during welding and reducing the risk of heat-affected zone (HAZ) defects.

5. Compatibility with other materials: Cobalt-based alloys can be easily welded to a wide range of base metals, including stainless steels, nickel alloys, and other cobalt-based alloys, providing versatility in welding applications.

To use cobalt-based alloy powders for PTAW, the powder is typically fed into the plasma arc using a powder feeder. The powder is then melted by the high-temperature plasma arc and deposited onto the workpiece, forming a weld bead. The specific welding parameters, such as arc current, travel speed, and powder feed rate, will depend on the specific alloy and application requirements.

It is important to note that the selection of the cobalt-based alloy powder should be based on the specific welding application and the desired properties of the final weld. Different cobalt-based a

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