passivation

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passivation

(păs″ĭ-vā′shĭn) [″]
The stabilization and protection of a surface from outside influences, e.g., the treatment of an atherosclerotic plaque to keep it from rupturing or of a metal to keep it from corroding.

passivation

the final stage in instrument manufacture, passing the finished instruments through a bath of nitric acid which removes foreign particles and promotes the formation of a protective coating of chromium oxide.

Patient discussion about passivation

Q. what is a passive smoking? and is it dangerous as an active?

A. Passive smoking is the exposure to cigarettes smoke emitted from cigarettes smoke by other person. It's dangerous and may increase the risk to several diseases similar to active smoking (one's exposure to smoke emitted from the cigarettes he or she is smoking) although the risk is of lower magnitude. Example for passive smoking is children of smokers etc.

You may read more here:http://www.nlm.nih.gov/medlineplus/secondhandsmoke.html

Q. what is it a passive smoking? and is it bad as as the active smoking? can i get cancer from it?

A. Passive smoking is the involuntary exposure of nonsmokers to tobacco smoke from the smoking of others. It is considered dangerous, and cause increased risk of cancer, although to a lesser degree than active smoking.

You may read more here:
http://www.nlm.nih.gov/medlineplus/secondhandsmoke.html

Q. Can I get lung cancer from passive smoking? All my friends smoke, can I get cancer by hanging out with them?

A. Yes, you can develop cancer by passive smoking. From what I've heard, non-smokers exposed to second-hand smoke at home or work, increase their risk of developing lung cancer by 20 percent to 30 percent.

More discussions about passivation
References in periodicals archive ?
Then the metal ions (for example chromium) deposit as the passivation layer.
Wagh continued, "A hand-held thermometer indicates a 10-12 [degrees]F temperature rise, as iron becomes a corrosion-resistant passivation layer of iron oxy hydroxide.
A hand-held thermometer indicates a 10-12[degrees] F temperature rise, as iron becomes a corrosion-resistant passivation layer of iron oxy hydroxide.
By enhancing the layer's SiN composition and crystalline structure, Fujitsu was able to build a passivation layer with minimal crystalline defects, making it difficult for electrons to accumulate.
The inductors provide >20 quality factor that outperforms the inductors formed by the IC process under the passivation layer (Q<10).
The die is a next-generation Complementary Metal Oxide Semicon-ductor (CMOS) chip with a nitride passivation layer and integral light "shield" to reduce light sensitivity.
To prevent oxidation problems and still take advantage of the high recording density potential of MP media, metal particles used in DDS media are typically coated with a passivation layer material.
This effectively shrunk the passivation layer to the thickness of a single atom, which greatly improved the transport of electrons through the quantum dot layer.
Leave the CLU on for 15 minutes to see if the battery current burns through the passivation layer.
However, should the passivation layer grow too thick, then the cell's discharge performance may be affected.
5 eV, BE), (21) confirms the presence of a titanium-based passivation layer on these surfaces.